FIELD
The present disclosure relates to a tension device for a continuous looped operator of a window covering. More specifically, the present disclosure relates to a tension device that, when properly installed, is configured to maintain tension on the continuous looped operator, and when not properly installed, is configured to prevent the continuous looped operator and associated window covering from operating as designed for full operation.
SUMMARY
In one example of an embodiment, an adjustable mounting bracket for a tension assembly for a continuous looped operator includes a mounting projection defining a projection extending from a surface of the mounting projection, and a bracket member defining a first elongated aperture, the first elongated aperture configured to receive the projection. The projection is configured to slide within the first elongated aperture, and the mounting projection is configured to removably fasten to the bracket member.
In another example of an embodiment, the bracket member defines a second elongated aperture horizontally aligned with the first elongated aperture.
In another example of an embodiment, the first elongated aperture has a first shape, and the second elongated aperture has a second shape, different than the first shape.
In another example of an embodiment, a fastener assembly is configured to removably fasten the mounting projection to the bracket member, the fastener assembly including a first portion and a second portion.
In another example of an embodiment, the first portion of the fastener assembly is configured to be received by the first elongated aperture and the second portion of the fastener assembly is configured to be received by the second elongated aperture.
In another example of an embodiment, the second portion of the fastener assembly is configured to slide relative to the second elongated aperture, and the second portion of the fastener assembly is restricted from rotating relative to the second elongated aperture.
In another example of an embodiment, the first portion of the fastener assembly is a threaded fastener and the second portion of the fastener assembly is a nut configured to threadably engage the threaded fastener.
In yet another example of an embodiment, the mounting projection includes a first engagement surface on the surface of the mounting projection, and the bracket member includes a second engagement surface, wherein in response to the mounting projection being removably fastened to the bracket member, the first and second engagement surfaces are configured to interlock.
In another example of an embodiment, the first engagement surface and the second engagement surface are complimentary surfaces.
In another example of an embodiment, the first engagement surface includes a first plurality of teeth and the second engagement surface includes a second plurality of teeth.
In yet another example of an embodiment, the bracket member includes a first portion and a second portion, the first portion includes the first elongated aperture, and the second portion includes at least one fastener aperture.
In another example of an embodiment, the first portion is oriented orthogonal to the second portion.
In another example of an embodiment, the first portion is oriented oblique to the second portion.
In another example of an embodiment, the mounting projection defines a channel that extends around an outer circumference of the mounting projection.
In another example of an embodiment, the mounting projection is configured to be received by a tension assembly, the tension assembly includes a locking member configured to engage the channel to fasten the mounting projection to the tension assembly.
In another example of an embodiment, the mounting projection is configured to be received by a tension assembly, the tension assembly includes a locking member defining a plurality of arcuate surfaces, the plurality of arcuate surfaces are configured to be received by the channel to fasten the mounting projection to the tension assembly.
In another example of an embodiment, an adjustable mounting bracket for a tension assembly for a continuous looped operator includes a mounting projection defining a projection extending from a surface of the mounting projection, and a first engagement surface surrounding the projection, and a bracket member defining an elongated aperture, the elongated aperture configured to receive the projection, and a second engagement surface surrounding the elongated aperture. The projection is configured to slide within the first elongated aperture. The mounting projection is configured to removably fasten to the bracket member. In response to fastening of the mounting projection to the bracket member, the first engagement surface and the second engagement surface interlock.
In another example of an embodiment, the elongated aperture is a first elongated aperture, the bracket member further comprising a second elongated aperture aligned with the first elongated aperture, the second elongated aperture defining a different shape than the first elongated aperture.
In another example of an embodiment, the second elongated aperture has more sides than the first elongated aperture.
In another example of an embodiment, the first engagement surface includes a first plurality of peaks and valleys, and the second engagement surface includes a second plurality of peaks and valleys.
Other aspects of the disclosure will become apparent by consideration of the detailed description and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an example of an embodiment of a tension device assembly configured to engage a continuous cord loop of a window covering.
FIG. 2 is a front perspective view of the tension device assembly of FIG. 1 illustrating a first housing member.
FIG. 3 is a rear perspective view of the tension device assembly of FIG. 1 illustrating a second housing member.
FIG. 4 is a side view of the tension device assembly of FIG. 1 illustrating a first side of the tension device assembly.
FIG. 5 is a side view of the tension device assembly of FIG. 1 illustrating a second side of the tension device assembly opposite the first side.
FIG. 6 is a partially exploded view of the tension device assembly of FIG. 1 illustrating the first housing member detached from the second housing member.
FIG. 7 is a partially exploded view of the tension device assembly of FIG. 6 illustrating an interior surface of the first housing member.
FIG. 8 is a perspective view of the tension device assembly of FIG. 1 with the first housing member removed.
FIG. 9 is a front perspective view of the tension device assembly of FIG. 8.
FIG. 10 is a partially exploded view of the tension device assembly of FIG. 8 with a tension member removed from a second housing member.
FIG. 11 is a perspective view of the tension device assembly of FIG. 1 in a locked configuration with a first housing member removed for clarity.
FIG. 12 is a perspective view of the tension device assembly of FIG. 1 in an unlocked configuration with a first housing member removed for clarity.
FIG. 12A is a perspective view of an alternative embodiment of the second housing member of the tension device assembly of FIG. 1 illustrating an alternative geometry of the locking teeth and having the continuous looped operator and tension member removed for clarity.
FIG. 13 is a perspective partially exploded view of the tension device assembly of FIG. 1.
FIG. 14 is a front perspective view of the tension member associated with the tension device assembly of FIG. 1.
FIG. 15 is a rear perspective view of the tension member of FIG. 14.
FIG. 16 is a bottom perspective view of the tension member of FIG. 14.
FIG. 17 is a perspective view of a mounting assembly, and engagement of an inner locking member with an outer housing.
FIG. 18 is a perspective view of an example of an embodiment of a wall fastener.
FIG. 19 is a perspective view of another example of an embodiment of a wall fastener.
FIG. 20 is a perspective front view of an example of an embodiment of an adjustable mounting bracket.
FIG. 21 is a perspective rear view of the adjustable mounting bracket of FIG. 20.
FIG. 22 is a perspective exploded front view of the adjustable mounting bracket of FIG. 20.
FIG. 23 is a front perspective view of the adjustable mounting bracket of FIG. 22, illustrating a first side of a mounting projection and a bracket member, with the fastener and nut not shown for purposes of clarity.
FIG. 24 is a rear perspective view of the adjustable mounting bracket of FIG. 23, illustrating a second side of the mounting projection and the bracket member.
FIG. 25 is a perspective front view of another example of an embodiment of an adjustable mounting bracket.
FIG. 26 is a perspective rear view of the adjustable mounting bracket of FIG. 25, with the fastener and nut not shown for purposes of clarity.
FIG. 27 is a perspective view of the mounting assembly engaging the wall fastener of FIG. 18, illustrating the locking member prior to engagement with the wall fastener and the first housing member removed for clarity.
FIG. 28 is a perspective view of the inner locking member of FIG. 17 engaging the wall fastener of FIG. 18, with the outer housing and the housing assembly removed for clarity.
FIG. 29 is a perspective view of an alternative embodiment of a tension device assembly configured to engage a continuous cord loop of a window covering.
FIG. 30 is a front perspective view of the tension device assembly of FIG. 29 illustrating a first housing member.
FIG. 31 is a rear perspective view of the tension device assembly of FIG. 29 illustrating a second housing member.
FIG. 32 is a top perspective view of a tension member associated with the tension device assembly of FIG. 29 with the first and second housing members removed for clarity.
FIG. 33 is a partially exploded perspective view of the tension device assembly of FIG. 29, illustrating the first housing member detached for clarity.
FIG. 34 is a partially exploded perspective view of the tension device assembly of FIG. 29, illustrating the first housing member and the second housing member detached for clarity and viewed from a first side.
FIG. 35 is a partially exploded perspective view of the tension device assembly of FIG. 29, illustrating the first housing member and the second housing member detached for clarity, and viewed from a second side, opposite the first side shown in FIG. 34.
DETAILED DESCRIPTION
Before any embodiments of the disclosure are explained in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The disclosure is capable of supporting other embodiments and being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Terms of degree, such as “substantially,” “about,” “approximately,” etc. are understood by those of ordinary skill to refer to reasonable ranges outside of the given value, for example, general tolerances associated with manufacturing, assembly, and use of the described embodiments.
In addition, the application discloses and illustrates one or more examples of a continuous looped operator 200. In one example of an embodiment, the continuous looped operator 200 is illustrated as a cord (or a continuous cord loop). In another example of an embodiment, the continuous looped operator 200 is illustrated as a chain, and more specifically a bead chain. It should be appreciated that the term continuous looped operator 200 can include a cord, a strap, a chain, a bead chain, or any other suitable looped operator that is configured to translate in a looped fashion to facilitate operation of a window shade.
With reference now to FIGS. 1-7, an example of an embodiment of a tension device assembly 100 (or a tension device 100) for use with a continuous looped operator 200 is illustrated. The tension device 100 includes a housing assembly 102. The housing assembly 102 includes a first housing member 104 (or a front housing member 104) and a second housing member 108 (or a rear housing member 108). The first and second housing members 104, 108 are configured to fasten together (or interlock). For example, the first housing member 104 can include a plurality of projections 112 (shown in FIG. 7) while the second housing member 108 can include a plurality of recesses 116 (shown in FIG. 6). Each recess 116 is configured to receive an associated projection 112 to fasten the housing members 104, 108 together. In one or more alternative examples of embodiments, the housing members 104, 108 can be fastened together by an adhesive, a weld, a fastener (e.g., a screw, bolt, threaded member, etc.), a structural tab, or any other suitable fastener to connect together the housing members 104, 108. It should be appreciated that the continuous looped operator 200 is illustrated as a continuous cord loop. However, the tension device 100 can be used with any suitable continuous looped operator 200.
With specific reference to FIGS. 4-5, the housing assembly 102 defines an interior passage 120 (or a central passage 120). The interior passage 120 extends laterally through the housing assembly 102. The housing assembly 102 cooperates to define a first side aperture 124 positioned on a first side of the housing assembly 102, and a second side aperture 128 position on a second side of the housing assembly 102. The first side aperture 124 is partially defined by the first and second housing members 104, 108. Similarly, the second side aperture 128 is partially defined by the first and second housing members 104, 108. The first and second side apertures 124, 128 are positioned on opposing sides of the interior passage 120. The interior passage 120 is configured to receive an end of continuous looped operator 200 (shown in FIG. 12). In addition, as discussed further below, the continuous looped operator 200 is configured to rotate through the interior passage 120. In one operational configuration, the continuous looped operator 200, shown as a continuous cord loop 200, enters the interior passage 120 from the first side aperture 124, travels through the interior passage 120, and exits through the second side aperture 128. In another operational configuration, the continuous looped operator 200 enters the interior passage 120 from the second side aperture 128, travels through the interior passage 120, and exits through the first side aperture 124.
With reference back to FIGS. 1-2, the first housing member 104 defines an aperture 132. The aperture 132 extends entirely through the first housing member 104. In the illustrated embodiment, the aperture 132 has a circular profile. In other examples of embodiments, the aperture 132 can have any suitable shaped profile (e.g., triangular, square, pentagon, star shaped, polygonal, etc.). While the aperture 132 is defined by the first housing member 104, in another example of an embodiment, the aperture 132 is defined by the second housing member 108 such that the aperture 132 extends entirely through the second housing member 108.
With reference now to FIG. 6, a tension assembly 136 is received by the housing assembly 102. As shown in FIGS. 8-9, the tension assembly 136 includes a tension member 140, a first biasing member 144, and a second biasing member 148. The tension member 140 is configured to slide relative to the housing assembly 102 along a first axis 152. In the illustrated embodiment, the first axis 152 is arranged perpendicular to the orientation of the interior passage 120. The first biasing member 144 applies a biasing force to the tension member 140. The biasing force is applied to the tension member 140 in a direction parallel to the first axis 152 (or along the first axis 152). In the illustrated embodiment, the first biasing member 144 is a first spring member 144 (or a coil spring member 144). The second biasing member 148 is operably connected to the tension member 140. More specifically, the second biasing member 148 is coupled to the tension member 140. In the illustrated embodiment, the second biasing member 148 is integrated into the tension member 140. The second biasing member 148 applies a biasing force away from the tension member 140 and towards the first housing member 104. The second biasing member 148 also includes a projection 156. The projection 156 has a shape that is complimentary to the shape of the aperture 132. Accordingly, in the illustrated embodiment, the projection 156 has a circular profile to be received by the aperture 132. However, in other examples of embodiments, the projection 156 can have any suitable shape that is complimentary to the shape of the aperture 132 such that the aperture 132 is configured to receive and retain the projection 156. In other examples of embodiments, the second biasing member 148 and associated projection 156 can be a spring button, a push button spring, a button spring, or any other suitable biasing member configured to bias a projection outwards and into engagement with the aperture 132.
As noted above, the tension member 140 is configured to slide relative to the housing assembly 102. More specifically, the tension member 140 is configured to slide within the housing assembly 102. To facilitate sliding engagement of the tension member 140 relative to the housing assembly 102, the housing assembly 102 can include one or more channels 160. With reference to FIG. 7, an interior of the first housing member 104 includes a channel 160. The channel 160 is elongated and configured to guide a portion of the tension member 140. In the illustrated embodiment, the channel 160 is in communication with the aperture 132. The channel 160 extends in a direction of travel of the tension member 140. In the illustrated embodiment, the channel 160 extends in a direction parallel to the axis 152 (shown in FIG. 8). The channel 160 is configured to guide the second biasing member 148 during sliding movement of the tension member 140. This includes during engagement and disengagement of the second biasing member 148 with the aperture 132.
The housing assembly 102 can also include one or more retention projections 164. As illustrated in FIG. 8, a plurality of retention projections 164 are defined by a portion of the second housing member 108. More specifically, three retention projections 164 having one or more lengths are defined by a portion of the second housing member 108. The retention projections 164 are configured to retain the first biasing member 144. More specifically, a first end of the first biasing member 144 is configured to engage the retention projections 164. With reference to FIGS. 8 and 13, a second end of the first biasing member 144 is configured to be received by a channel 168 defined by the tension member 140. The one or more retention projections 164 and channel 168 cooperate to retain the first biasing member 144 in engagement between the housing assembly 102 and the tension member 140, and further apply a biasing force onto the tension member 140.
With reference to FIG. 13-14, the tension member 140 includes a first end 172 opposite a second end 174. The first end 172 can also be referred to as a biasing member engagement end 172. The second end 174 can also be referred to as a continuous looped operator engagement end 174. Access to the channel 168 (shown in FIGS. 13 and 15) is provided on the first end 172. The second end 174 defines an engagement surface 176 (or a looped operator engagement end 176) that is configured to engage the continuous looped operator 200. With reference now to FIG. 14-15, the engagement surface 176 includes a first arcuate projection 178 and a second arcuate projection 180. The first and second arcuate projections 178, 180 are separated by an arcuate recess 182. In the illustrated embodiment, the arcuate recess 182 is centrally positioned, with the arcuate projections 178, 180 positioned on opposite sides of the recess 182. Accordingly, the engagement surface 176 defines a W-shaped front and rear side profile (or a W-shaped looped operator engaging surface).
With reference to FIG. 16, the engagement surface 176 defines an arcuate (or curved) looped operator engagement surface 184. The arcuate looped operator engagement surface 184 generally has a U-shaped profile as viewed from each side of the tension member 140. The engagement surface 184 is shaped to guide the continuous looped operator 200 during operation while also facilitating contact (or engagement) between the tension member 140 and the continuous looped operator 200. The tension member 140 defines at least one guide channel 186 (or guide recess 186). In the illustrated embodiment, the tension member 140 defines a pair of guide channels 186a, 186b. The guide channels 186a, 186b are position on opposing surfaces of the engagement surface 176. Stated another way, each guide channel 186a, 186b is positioned on opposing sides of the tension member 140. The guide channels 186a, 186b extend in a direction parallel to the axis 152 (shown in FIG. 8). The guide channels 186a, 186b are configured to engage a respective guide projection 188 that is coupled to the housing assembly 102.
With reference back to FIGS. 7 and 10, the housing assembly 102 can include at least one guide projection 188. As illustrated in FIG. 7, the first housing member 104 includes a first guide projection 188a. As illustrated in FIG. 10, the second housing member 108 includes a second guide projection 188b. The first guide projection 188a is configured to be received by a first guide channel 186a defined by the tension member 140. The second guide projection 188b is configured to be received by a second guide channel 186b on the tension member 140. The guide projections 188a, 188b cooperate to guide the tension member 140 into a position relative to a locking surface 190 to selectively lock the continuous looped operator 200 from movement relative to the housing assembly 102.
With reference to FIGS. 4-5, the housing assembly 102 defines the locking surface 190. In the illustrated embodiment, and with specific reference to FIG. 7, the first housing member 104 defines a first portion 190a of the locking surface 190. With reference to FIG. 10, the second housing member 108 defines a second portion 190b of the locking surface 190. In response to the first and second housing members 102, 104 being connected, the portions 190a, b of the locking surface 190 connect to define the locking surface 190. In other examples of embodiments, one of the first or second housing members 102, 104 can define the entirety of the locking surface 190. The locking surface 190 includes at least one locking tooth 192 (or locking projections 192 or locking members 192). With reference to FIG. 10, the locking surface 190 includes a plurality of locking teeth 192 and specifically two locking teeth 192. The locking teeth 192 are positions on a raised portion 193 of the locking surface 190. The locking teeth 192 are configured to cooperate with the tension member 140 to selectively engage the continuous looped operator 200 and restrict movement of the continuous looped operator 200 relative to the housing assembly 102. It should be appreciated that in the illustrated embodiment, the locking surface 190 includes two locking teeth 192. The locking teeth 192 are spaced approximately half of a diameter of the continuous looped operator 200 apart. For example, in an embodiment of a continuous looped operator 200 that has a 0.120 inch diameter, the spacing between the adjacent locking teeth 192 is approximately 0.060 inches. It should also be appreciated that the locking teeth 192 and the raised portion 193 are configured to be received by the arcuate recess 182 (or inserted into the arcuate recess 182) of the tension member 140 in a locked configuration. In the illustrated embodiment the locking teeth 192 are positioned on the second portion 190b of the locking surface 190. It should be appreciated that in embodiments of the locking surface 190 having portions 190a, 190b, the locking teeth 192 can be positioned on either portion 190a, 190b. It should also be appreciated that the portions 190a, 190b can also have respective raised portions 193. It should be appreciated that while conical locking teeth 192 are illustrated in FIG. 12, the locking teeth are not limited to this geometry. FIG. 12A illustrates an alternative example of an embodiment of the second housing member 108a that incorporates locking teeth 192a. The plurality of teeth 192a, and specifically two teeth 192a, each have opposing sloped surfaces. The teeth 192a have the same functionality and spacing as locking teeth 192, and further are configured to engage the continuous looped operator 200 as disclosed herein.
With reference to FIG. 13, the tension device 100 also includes a mounting assembly 204. The mounting assembly 204 is configured to be received and retained by the housing assembly 102. The mounting assembly 204 advantageously hides the mounting structure to provide a decorative concealment of all mounting hardware.
With reference to FIG. 17, the mounting assembly 204 includes a first outer housing 208 and a second inner locking member 212. The inner locking member 212 is configured to slidably engage and be received by the outer housing 208. The outer housing 208 defines an aperture 216 extending through the housing 208. In the illustrated embodiment, two apertures 216, one in each sidewall of the housing 208, are generally aligned to define a passage through the housing 208. The locking member 212 includes two side members 220a, 220b each side member includes locking projections 224a, 224b. The locking projections 224a, 224b each engage a respective locking slot 228a, 228b of the outer housing 208, as shown in FIG. 20. The locking member 212 also defines a plurality of arcuate mounting surfaces 232, shown in FIG. 17. The arcuate mounting surfaces 232 define a diameter that is less than a diameter of the apertures 216 defined by the outer housing 208. It should be appreciated that the locking member 212 can be a modified E-clip (or C-clip). In addition, the arcuate mounting surfaces 232 can be biased inward. The locking member 212 is configured to engage a wall fastener 240, which is discussed further below.
To fasten the mounting assembly 204 to the housing assembly 102, the outer housing 208 is positioned within the housing assembly 102. With reference back to FIG. 13, the housing assembly 102 can include a channel 194 and a plurality of projections 196. The projections 196 can be positioned on either (or both) sides of the channel 194 (for example in a channel sidewall). The projections 196 are configured to be received by associated recesses 236 positioned on the outer housing 208 (see FIG. 17). Each recess 236 is configured to receive one projection 196. With the outer housing 208 fastened to the housing assembly 102, the locking member 212 is configured to engage and disengage the outer housing 208.
With continued reference to FIG. 13, the housing assembly 102 includes a housing aperture 198. The housing aperture 198 is approximately the same size of the apertures 216 of the outer housing 208. In response to the mounting assembly 204 being fastened to the housing assembly 102, the housing aperture 198 and the apertures 216 are configured to align. The aligned apertures 198, 216 are configured to receive the wall fastener 240. In the illustrated embodiment, the housing aperture 198 is defined by the second housing member 108.
With reference to FIG. 18, an example of an embodiment of a wall fastener 240 is illustrated. The wall fastener 240 includes a mounting projection 244. A circumferential channel 248 extends around the mounting projection 244. The wall fastener 240 also defines an aperture 252 configured to receive a fastener (e.g., a screw, etc.). The fastener is configured to be received by the aperture 252 to mount the wall fastener 240 to a mounting surface (such as a wall, a window frame, etc.). In the illustrated embodiment, the mounting projection 244 is an annular mounting projection, while the channel 248 is an annular channel 248. The mounting projection 244 and the channel 248 are concentric. In other examples of embodiments, the mounting projection 244 and the channel 248 can be any suitable shape.
With reference to FIG. 19, another example of an embodiment of a wall fastener 240a is illustrated. The wall fastener 240a also includes the mounting projection 244a and the channel 248 that extends around an outer circumference of the mounting projection 244a. It should be appreciated that the channel 248 can be referred to as a circumferential channel 248. The wall fastener 240a includes a structural member 250 (or structural surface 250). The structural member 250 includes a first portion 251a and a second portion 251b. The first and second portions 251a, 251b are arranged orthogonal to each other to form an L-shape. The mounting projection 244a is coupled to the first portion 251a, while at least one aperture 252 is defined by the second portion 251b of the structural member 250. In the illustrated embodiment, a plurality of apertures 252 are positioned on the second portion 251b. While the illustrated embodiment depicts the first and second portions 251a, b as arranged orthogonal to each other, in other embodiments the portions 251a, b can be arranged at an acute angle, an obtuse angle, an oblique angle or at any suitable angle to one another.
With reference now to FIGS. 20-24, an example of an embodiment of an adjustable mounting bracket 260 is illustrated. With specific reference to FIGS. 20-21, the adjustable mounting bracket 260 includes a mounting projection 244b (or a mounting member 244b) and a bracket member 262. The mounting projection 244b is configured to be adjustably positioned relative to the bracket member 262 along an axis A. For example, the mounting projection 244b is configured to slide relative to the bracket member 262. A threaded fastener 264 (shown in FIGS. 21-22) is configured to connect to a nut 265 (shown in FIGS. 21-22). The fastener 264 and nut 265 assist with selectively fastening the mounting projection 244b to the bracket member 262. It should be appreciated that the fastener 264 and nut 265 can be referred to as a fastening assembly, with one component being referred to as a first portion of the fastening assembly 264 and the other component being referred to as a second portion of the fastening assembly 265.
With specific reference to FIG. 22, the mounting projection 244b includes a circumferential channel 248 that extends around an outer circumference of the mounting projection 244b. In the illustrated embodiment, the mounting projection 244b is an annular mounting projection, while the channel 248 is an annular channel 248. The channel 248 is recessed relative to an outer surface of the mounting projection 244b. The mounting projection 244b and the channel 248 are concentric. In other examples of embodiments, the mounting projection 244b and the channel 248 can be any suitable shape. The mounting projection 244b also includes an aperture 252 (shown in FIG. 23) configured to receive the fastener 264 (e.g., a screw, etc.). With reference to FIG. 24, a back side of the mounting projection 244b includes a projection 266 (or an elongated projection 266). The projection 266 defines the aperture 252. In the illustrated embodiment, the projection 266 is elongated and has a stadium or discorectangle shape. In other example of embodiments, the projection 266 can have any suitable shape (e.g., circular, oval, square, rectangular, polygonal, etc.). A first engagement surface 268 is positioned on a rear surface 269 of the mounting projection 244b. The first engagement surface 268 includes a plurality of irregular surfaces that are configured to engage (or interlock) with complimentary irregular surfaces provided on the bracket member 262, as discussed further below. The first engagement surface 268 can include a plurality of alternating peaks and valleys 268, a plurality of spaced ridges 268, a plurality of spaced ribs 268, or any other structural surface arrangement configured to engage a complimentary structural surface arrangement on the bracket member 262. In the illustrated embodiment, the elongated projection 266 is surrounded by the plurality of alternating peaks and valleys 268 (or the plurality of ridges 268 or ribs 268 or teeth 268). It should be appreciated that the plurality of peaks and valleys 268 can be referred to as first ridges 268 or first ribs 268 or a first interface surface 268.
With reference back to FIG. 23, the bracket member 262 includes a mounting aperture 270. The mounting aperture 270 extends through the bracket member 262 and defines an elongated aperture. The mounting aperture 270, which can be referred to as a first elongated aperture 270, is configured to receive the projection 266 (shown in FIG. 24) of the mounting projection 244b. More specifically, the projection 266 is configured to slide relative to the mounting aperture 270. In the illustrated embodiment, the mounting aperture 270 has a stadium or discorectangle shape. In other example of embodiments, the mounting aperture 270 can have any suitable shape (e.g., circular, oval, square, rectangular, polygonal, etc.) that is complimentary to the projection 266 such that the mounting aperture 270 is configured to receive the projection 266, and further the projection 266 is configured to slide relative to (or within) the mounting aperture 270. It should be appreciated that the axis A and the mounting aperture 270 area axially aligned, such that the mounting aperture 270 extends along axis A.
A second engagement surface 272 is positioned on a front surface 273 of the bracket member 262. The second engagement surface 272 includes a plurality of irregular surfaces that are complimentary and configured to engage (or interlock) with the irregular surfaces provided on the first engagement surface 268. The second engagement surface 272 can include a plurality of alternating peaks and valleys 272, a plurality of spaced ridges 272, a plurality of spaced ribs 272, or any other structural surface arrangement configured to engage the complimentary structural surface arrangement on the first engagement surface 268 of the mounting projection. In the illustrated embodiment, the mounting aperture 270 is surrounded by the plurality of alternating peaks and valleys 272 (or the plurality of ridges 272 or ribs 272 or teeth 272). It should be appreciated that the plurality of peaks and valleys 272 can be referred to as second ridges 272 or second ribs 272 or a second interface surface 272.
The bracket member 262 also includes a fastener aperture 274 (or surface mounting aperture 274). The fastener aperture 274 is configured to receive a fastener (not shown) (e.g., a screw, bolt, nail, etc.). The fastener is used to mount (or fasten) the bracket member 262 to a surface, such as a wall, window sill, window frame, or other suitable surface.
With reference to FIG. 24, a rear surface 276 of the bracket member 262, which is opposite the front surface 273 (shown in FIG. 23) defines a nut aperture 278. The nut aperture 278 is an elongated aperture that is aligned with the mounting aperture 270. The nut aperture 278 defines an angular shape, which in the illustrated embodiment is a hexagonal shape. In other examples of embodiments, the bolt aperture 278 can have any suitable polygonal shape that is complimentary to, and configured to receive and assist with retaining, the nut 265. It should also be appreciated that the nut aperture 278 can be referred to as a second elongated aperture 278. The first elongated aperture 270 has a different shape than the second elongated aperture 278. More specifically, the second elongated aperture 278 can have more sides than the first elongated aperture 270 (or vise versa). In the illustrated embodiment, and as a nonlimiting example, the second elongated aperture 278 has six sides, while the first elongated aperture 270 has four sides. It should be appreciated that the first and second elongated apertures 270, 278 can have any suitable number of sides, with the first elongated aperture 270 configured to slidably receive the projection 266, and the second elongated aperture 278 configured to slidably receive and restrict rotation of the nut 265.
With reference now to FIGS. 25-26, another example of an embodiment of an adjustable mounting bracket 280 is illustrated. The adjustable mounting bracket 280 includes the same components and same functionality of the adjustable mounting bracket 260 (shown in FIGS. 20-24). This includes the mounting projection 244b and a bracket member 262a. The only difference is the bracket member 262a, which includes a first portion 282 and a second portion 284. The first and second portions 282, 284 are arranged orthogonal to each other to form an L-shape. The first portion 282 includes the mounting aperture 270, while the second portion 284 includes at least one surface mounting aperture 274. In the illustrated embodiment, the second portion 284 includes a plurality of surface mounting apertures 274a, b. While the illustrated embodiment depicts the first and second portions 282, 284 as arranged orthogonal to each other, in other examples of embodiments, the portions 282, 284 can be arranged at an acute angle, an obtuse angle, an oblique angle or at any suitable angle to one another.
In operation, the tension device 100 is configured to engage the continuous looped operator 200. The tension device 100 is configured to be in a first configuration or a second configuration. In a first configuration, also referred to as a locked configuration, the tension member 140 and the locking surface 190 cooperate to trap the continuous looped operator 200. The locked configuration is shown in FIG. 11. In the locked configuration, the first biasing member 144 applies a biasing force onto the tension member 140, biasing the tension member 140 towards the locking surface 190. The bias onto the tension member 140 allows the tension member 140 to engage the continuous looped operator 200, translating the continuous looped operator 200 into engagement with the locking teeth 192. By engaging (or trapping) the continuous looped operator 200 between the tension member 140 and the locking surface 190, the continuous looped operator 200 is restricted from movement relative to the tension device 100, and more specifically relative to the housing assembly 102.
To further restrict unintended movement of the continuous looped operator 200 operator relative to the housing assembly 102, in the locked configuration, the second biasing member 148 biases the projection 156 into engagement with the aperture 132 defined by the first housing member 104. Once received by the aperture 132, the projection 156 further locks movement of the tension member 140 relative to the housing assembly 102. Stated another way, engagement of the projection 156 and the aperture 132 restricts sliding (or lateral) movement of the tension member 140 relative to the housing assembly 102. Accordingly, the tension member 140 is locked into engagement with the locking surface 190, restricting movement of the continuous looped operator 200 relative to the housing assembly 102.
It should be appreciated that in the locked configuration, the tension device 100 prevents the continuous looped operator 200 from movement relative to the tension device 100, and more specifically relative to the housing assembly 102. The tension device 100 includes a combination multi-locking system that requires multiple, sequential steps to unlock and transition from the locked configuration to an unlocked configuration. In the locked configuration, the tension device 100 prevents an associated window covering from operating as designed for full operation of the window covering (or associated product).
To facilitate operation of the continuous looped operator 200, the tension device 100 must be actuated from the locked configuration to the unlocked configuration. To transition the tension device to the second configuration, or unlocked configuration, a first locking assembly is first actuated to an unlocked arrangement. More specifically, the projection 156 is disengaged with the aperture 132. To disengage the projection 156 from the aperture 132, a force is applied to the projection 156 sufficient to overcome the bias applied by the second biasing member 148, withdrawing the projection 156 from the aperture 132. In one example of an embodiment, a user can press the projection 156, like a button, to overcome the bias applied by the second biasing member 148 and disengage the projection 156 from the aperture 132. In another example of an embodiment, a user can use a tool (not shown) configured to be received by the aperture 132. The tool can be inserted into the aperture 132 and used to overcome the bias applied by the second biasing member 148, compress the projection 156 out of engagement with the aperture 132. It should be appreciated that the tool can be any suitable or desired tool, such as a customized tool, or a standard tool (e.g., an Allen wrench, a screwdriver, an awl, or any other suitable device for insertion into the aperture 132 to facilitate disengagement of the projection 156).
With the first locking assembly in an unlocked arrangement, such that the projection 156 is disengaged from the aperture 132, the second locking assembly is next actuated to an unlocked arrangement. More specifically, the tension member 140 is configured to slide relative to the housing assembly 102 along the first axis 152. To unlock the second locking assembly, a user applies sufficient force to overcome the bias applied by the first biasing member 144 onto the tension member 140. As the tension member 140 slides away from the locking surface 190, the tension member 140 frees the continuous looped operator 200 from engagement with the locking surface 190. The tension member 140 continues to slide away from the locking surface 190 until reaching the unlocked configuration, shown in FIG. 12. In this unlocked configuration, the continuous looped operator 200 is free to move relative to the tension device 100, and more specifically the housing assembly 102. The continuous looped operator 200 is in engagement with the arcuate projections 178, 180 of the engagement surface 176. The arcuate projections 178, 180 guide the continuous looped operator 200 through the interior passage 120 as the continuous looped operator 200 moves relative to the tension device 100, and more specifically the housing assembly 102. Movement of the continuous looped operator 200 relative to the tension device 100, and more specifically the housing assembly 102, facilitates operation of an associated window shade.
It should be appreciated that the continuous looped operator 200 applies tension to the tension member 140 to overcome the bias applied by the first biasing member 144 and maintain the tension device 100 in the unlocked configuration. As such, the continuous looped operator 200 remains in contact with the tension member 140. Proper installation of the tension device 100 will maintain the tension applied by the continuous looped operator 200 to the tension member 140 to overcome the bias applied by the first biasing member 144 to maintain the unlocked configuration. For example, a user will disengage the projection 156 from the aperture 132, and then apply a force onto the housing assembly 102 sufficient to apply tension onto the continuous looped operator 200 such that the tension member 140 overcomes the bias applied by the first biasing member 144 to slide the tension member 140 along the first axis 152. In this position the tension device 100 is prepared for proper installation.
The wall fastener 240, 240a, 260, 280 is generally mounted (or pre-mounted) to a surface (e.g., a wall, a window frame, etc.) prior to or concurrently with transitioning the tension device 100 from the locked configuration to the unlocked configuration. Once the wall fastener 240, 240a, 260, 280 is mounted, proper installation of the tension device 100 to maintain the unlocked configuration can proceed. For example, the mounting projection 244, 244a, 244b is inserted into the aligned apertures 198, 216 of the tension device 100. Once the mounting projection 244, 244a, 244b is received by the aligned apertures 198, 216, the locking member 212 is inserted into the outer housing 208 and into engagement with the channel 248 of the mounting portion 244, 244a, 244b (see FIG. 27). More specifically, the arcuate mounting surfaces 232 of the locking member 212 are received by the channel 248, fastening the locking member 212 to the mounting portion 244, 244a, 244b (see FIG. 28). Once inserted, the locking member 212 fastens to the outer housing 208. This in turn fastens mounting assembly 204 to the wall fastener 240, 240a, 260, 280, and in turn mounting the tension device 100 to the wall fastener 240, 240a, 260, 280. The tension device 100 is mounted to the wall fastener 240, 240a, 260, 280 with the tension member 140 in the unlocked configuration.
Once proper installation has occurred, the tension device 100 maintains proper tension on the continuous looped operator 200. The tension device 100 remains in the unlocked configuration, and the continuous looped operator 200 is free to operate.
If proper installation is interrupted such that the tension device 100 is no longer properly fastened to the wall fastener 240, 240a, 260, 280 tension will be removed from the continuous looped operator 200. The tension device 100 will immediately responsively transition from the unlocked configuration back to the locked configuration. More specifically, the first biasing member 144 will apply the biasing force onto the tension member 140, sliding the tension member 140 towards the locking surface 190. The continuous looped operator 200 will be engaged by the locking teeth 192, trapping the continuous looped operator 200 between locking teeth 192 and the tension member 140. The guide projections 188 guides the tension member 140 into the locked engagement. This locks the second locking assembly. Concurrently, or shortly after locking of the second locking assembly, the first locking assembly engages and locks. The projection 156 slides along the channel 160 until it is received by the aperture 132. Once received by the aperture 132, the second biasing member 148 applies a biasing force to the projection 156 to maintain its position within the aperture 132. In this locked configuration, the continuous looped operator 200 is restricted (or locked) from movement relative to the tension device 100 (or the housing assembly 102). In the locked configuration, the tension device 100 prevents the window covering from operating, as the continuous looped operator 200 is restricted from movement. In addition, to return to the unlocked configuration, the sequential process of unlocking the first locking assembly, and then unlocking the second locking assembly by applying tension to the continuous looped operator 200 is required. The tension device 100 can then attach to the wall fastener 240, 240a, 260, 280 to maintain the necessary tension to the continuous looped operator 200, maintain the unlocked configuration of the tension device 100, and conclude a proper installation. In the event a user does not complete a proper installation and fails to fasten the tension device 100 to the surface by the wall fastener 240, 240a, 260, 280, the tension device 100 will prevent the window covering from operating without completing a sequential process of at least unlocking the first locking assembly and then the second locking assembly followed by application of tension to the continuous looped operator 200 to slide the tension member 140 to the unlocked configuration. Thus, a minimum of a plurality of sequential process steps is required to transition the tension device 100 from the locked configuration to the unlocked configuration.
It should be appreciated that the adjustable mounting bracket 260, 280 illustrated in FIGS. 20-24 and 25-26, respectively, have certain operational advantages. More specifically, the adjustable mounting bracket 260, 280 allows for adjustment of the position of the tension device 100 relative to the adjustable mounting bracket 260, 280 without having to remove and remount the bracket 260, 280. This can be desirable to account for use based wear on certain components, such as tension based stretching (or elongation) of the continuous looped operator 200.
As a nonlimiting example, the adjustable mounting bracket 260, 280 is configured to be positioned and mounted to a surface. More specifically the bracket member 262, 262a is configured to be mounting to the surface, such by inserting a fastener into one or more of the fastener apertures 274, 274a, 274b and into engagement with the surface. Once the bracket member 262, 262a is mounted, the mounting projection 244b can be positioned relative to the bracket member 262, 262a. More specifically, the mounting projection 244b is configured to slide relative to the bracket member 262, 262a, with the projection 266 sliding within the mounting aperture 270. It should be appreciated that the projection 266 is configured to slide along an axis defined by the mounting aperture 270 (or along the axis A). Once a desired position of the mounting projection 244b relative to the bracket member 262, 262a is achieved, the mounting projection 244b is selectively (or removably) fastened to the bracket member 262, 262a by a fastening assembly. The first portion of the fastening assembly 264 (or the fastener 264) is received by the aperture 252 defined by the mounting projection 244b. The first portion of the fastening assembly 264 then extends through (or is received by) the mounting aperture 270 (or first elongated aperture 270). The first portion of the fastening assembly 264 then engages the second portion of the fastening assembly 265 (or the nut 265). The second portion of the fastening assembly 265 is received by the second elongated aperture 278. The second elongated aperture 278 has a geometry that is complimentary to the second portion of the fastening assembly 265 such that the second portion of the fastening assembly 265 can slide relative to (or within) the second elongated aperture 265 (or along the axis A), but is restricted from rotating relative to the second elongated aperture 265. Stated another way, the second portion of the fastening assembly 265 is configured to slide along an axis defined by the second elongated aperture 278 (or along the axis A). Fastening the first and second portions of the fastening assembly 264, 265 places the first and second interface surfaces 268, 272 together. The surfaces 268, 272 complimentary engage (or interlock) to fasten the mounting projection 244b to the bracket member 262, 262a at a desired location.
Should the position of the mounting projection 244b need to be adjusted relative to the bracket member 262, 262a, such as due to elongation of the continuous looped operator 200 caused by use under tension, the adjustable mounting bracket 260, 280 facilitates such adjustment without requiring removal and reinstallation of the entire adjustable mounting bracket 260, 280. For example, elongation of the continuous looped operator 200 can cause the tension device 100 to transition from the unlocked configuration to the locked configuration, interrupting (or blocking) operation of the continuous looped operator 200. The mounting projection 244b can be adjusted relative to the bracket member 262, 262a by disengaging the first portion of the fastening assembly 264 and second portion of the fastening assembly 265 to a point that the first and second interface surfaces 268, 272 disengage. The mounting projection 244b (and first portion of the fastening assembly 264) is then free to slide relative to the first elongated aperture 270. In addition, the second portion of the fastening assembly 265 is free to slide relative to the second elongated aperture 278. Once the new position of the mounting projection 244b is selected relative to the bracket member 262, 262a, the first and second portions of the fastening assembly 264, 265 reengage (or refasten), and the first and second interface surfaces 268, 272 reengage
FIGS. 29-35 illustrate another example of an embodiment of a tension device 300. The tension device 300 includes like components as tension device 100. These like components are identified by like reference numbers, but simply replacing the 1XX with a 3XX. These like components generally operate in a like manner. With reference to FIG. 29, the tension device 300 includes a housing assembly 302. The housing assembly 302 defines an interior passage 320. A continuous looped operator 200a, illustrated as a bead chain, extends through the interior passage 320.
With reference to FIGS. 30-31, the housing assembly 302 includes a first housing member 304 opposite a second housing member 308. The first and second housing members 304, 308 are configured to fasten together (or interlock). For example, the first housing member 304 can include a plurality of projections 312 (shown in FIG. 34 while the second housing member 308 can include a plurality of recesses 316 (shown in FIG. 35).
With reference to FIGS. 34, the interior passage 320 extends laterally through the housing assembly 302. The housing assembly 302 cooperates to define a first side aperture 324 positioned on a first side of the housing assembly 302, and a second side aperture 328 position on a second side of the housing assembly 302. The first side aperture 324 is partially defined by the first and second housing members 304, 308. Similarly, the second side aperture 328 is partially defined by the first and second housing members 304, 308. The first and second side apertures 324, 328 are positioned on opposing sides of the interior passage 320. The interior passage 320 is configured to receive an end of continuous looped operator 200a. In addition, the continuous looped operator 200a is configured to rotate through the interior passage 320. In one operational configuration, the continuous looped operator 200a enters the interior passage 320 from the first side aperture 324, travels through the interior passage 320, and exits through the second side aperture 328. In another operational configuration, the continuous looped operator 200a enters the interior passage 320 from the second side aperture 328, travels through the interior passage 320, and exits through the first side aperture 324.
With reference to FIG. 30, the first housing member 304 defines an aperture 332 (or a first housing aperture 332). The aperture 332 extends entirely through the first housing member 304. With reference to FIG. 24, the second housing member 308 also defines an aperture 332a (or a second housing aperture 332a). The housing apertures 332, 332a are substantially identical. In the illustrated embodiment, the apertures 332, 332a have a circular profile. In other examples of embodiments, the apertures 332, 332a can have any suitable shaped profile (e.g., triangular, square, pentagon, star shaped, polygonal, etc.).
With reference now to FIG. 33, a tension assembly 336 is received by the housing assembly 302. The tension assembly 336 includes a tension member 340, a first biasing member 344, and a plurality of second biasing members 348, 348a (shown in FIG. 32). The tension member 340 is configured to slide relative to the housing assembly 302 along a first axis 352. In the illustrated embodiment, the first axis 352 is arranged perpendicular to the orientation of the interior passage 320 (shown in FIG. 34). The first biasing member 344 applies a biasing force to the tension member 340. The biasing force is applied to the tension member 340 in a direction parallel to the first axis 352 (or along the first axis 352). In the illustrated embodiment, the first biasing member 344 is a spring member 344 (or a coil spring member 344).
With reference to FIG. 32, the plurality of second biasing members 348, 348a are operably connected to the tension member 340. More specifically, the second biasing members 348, 348a are coupled to the tension member 340. In the illustrated embodiment, the second biasing members 348, 348a are integrated into the tension member 340. The second biasing members 348, 348a apply a biasing force away from the tension member 340 and towards and associated housing member 304, 308. Each second biasing member 348, 348a is configured to apply a biasing force onto a respective projection 356, 356a. One of the second biasing members 348 applies a biasing force onto the projection 356. Another of the second biasing members 248a applies a biasing force on the projection 356a. The second biasing members 348, 348a are configured to apply a biasing force in opposite directions. Accordingly, the projections 356a, 356a are biased in opposing directions (or biased away from each other). Each projection 356, 356a has a shape that is complimentary to the shape of a respective aperture 332, 332a (shown in FIGS. 30 and 31). Accordingly, in the illustrated embodiment, each projection 356, 356a has a circular profile such that each projection 356, 356a is configured to be received by the corresponding aperture 332, 332a. However, in other examples of embodiments, each projection 356, 356a can have any suitable shape that is complimentary to the shape of an associated aperture 332, 332a such each aperture 332, 332a is configured to receive and retain an associated projection 356, 356a. In other examples of embodiments, the second biasing members 348, 348a and associated projection 356, 356a can be a spring button, a push button spring, a button spring, or any other suitable biasing member configured to bias a projection outwards and into engagement with the aperture 332, 332a.
With reference to FIG. 33, a first end of the first biasing member 344 is configured to be received by (or engages with) a retention recess 363. The retention recess 363 is defined by the housing assembly 302, and more specifically the second housing member 308. With reference to FIG. 32, a second end of the first biasing member 344 is configured to be received by a channel 368 defined by the tension member 340. The retention recess 363 and the channel 368 cooperate to retain the first biasing member 344 in engagement between the housing assembly 302 and the tension member 340, and further apply a biasing force onto the tension member 340.
The tension member 340 is configured to slide relative to the housing assembly 302. More specifically, the tension member 340 is configured to slide within the housing assembly 302. To facilitate sliding engagement of the tension member 340 relative to the housing assembly 302, the housing assembly 302 can include a plurality of guide channels 360, 360a. With reference to FIG. 34, an interior of the first housing member 304 includes a first guide channel 360. As shown in FIG. 35, an interior of the second housing member 308 includes a second guide channel 360a. Each channel 360, 360a is elongated and configured to guide a portion of the tension member 340. More specifically, each channel 360, 360a is configured to receive an associated rib 361, 361a. Each rib 361, 361a is positioned on the tension member 340. The rib 361 is positioned on one side of the tension member 340 (see FIG. 35), while rib 361 a is positioned on the opposite side of the tension member 340 (see FIG. 34). As the tension member 340 slides relative to the housing assembly 302 along the first axis 352, each rib 361, 361a slides within the associated guide channel 360, 360a to guide sliding movement of the tension member 340.
The housing assembly 302 can also include a second guide channel 362, 362a. Each second guide channel 362, 362a can be in communication with a respective housing aperture 332, 332a. As shown in FIG. 34, a second guide channel 362 is connected to the housing aperture 332. With reference to FIG. 35, a second guide channel 362a is connected to the housing aperture 332a. Each guide channel 362, 362a can be defined by a respective housing member 304, 308. Each guide channel 362, 362a can also include a sloped portion that extends away from the associated aperture 332, 332a towards a remaining portion of the channel 362, 362a. Each guide channel 362, 362a can assist with guiding an associated projection 356, 356a towards and/or away from the respective aperture 332, 332a.
With reference to FIGS. 32 and 34, the tension member 340 includes a first end 372 opposite a second end 374. The first end 372 can also be referred to as a biasing member engagement end 372. The second end 374 can also be referred to as a continuous looped operator engagement end 374. With specific reference to FIG. 34, the second end 374 defines a continuous looped operator engagement surface 376. The continuous looped operator end 374 defines an arcuate (or curved) side profile, as viewed from the front or rear of the tension member 340. More specifically, the engagement end 374 defines a U-shaped front and rear side profile (or a U-shaped looped operator engaging surface). The engagement surface 376 also defines an arcuate (or curved) surface. The looped operator engagement surface 376 is configured to engage the looped operator 200a, and defines a U-shaped side profile. The engagement surface 376 is shaped to guide the continuous looped operator 200a during operation while also facilitating contact (or engagement) between the tension member 340 and the continuous looped operator 200a. The tension member 340 also defines at least one guide channel 386 (or guide recess 386). In the illustrated embodiment, the tension member 340 defines a pair of guide channels 386a, 386b (shown in FIGS. 34-35). The guide channels 386a, 386b are positioned on opposing surfaces of the engagement surface 376. Stated another way, each guide channel 386a, 386b is positioned on opposing sides of the tension member 340. The guide channels 386a, 386b extend in a direction parallel to the axis 352 (shown in FIG. 33). The guide channels 386a, 386b are configured to engage a respective guide projection 388 that is coupled to the housing assembly 302.
With continued reference to FIGS. 34-35, the housing assembly 302 includes a plurality of guide projections 388. The first housing member 304 includes a first guide projection 388a. The second housing member 308 includes a second guide projection 388b. The first guide projection 388a is configured to be received by a first guide channel 386a defined by the tension member 340. The second guide projection 388b is configured to be received by a second guide channel 386b defined by the tension member 340. The guide projections 388a, 388b cooperate to guide the tension member 340 into a position relative to a locking surface 390 to selectively lock the continuous looped operator 200a from movement relative to the housing assembly 302. The locking surface 390 is partially defined by a first locking surface 390a positioned on the first housing member 304, and a second locking surface 390b positioned on the second housing member 308. When the housing members 304, 308 are fastened together, the locking surfaces 390a, 390b connects to define the locking surface 390. The locking surface 390 defines a channel, and more specifically a substantially U-shaped channel that is configured to receive a portion of the continuous looped operator 200a. In the illustrated embodiment, a portion of the chain connecting adjacent balls of the ball chain operator 200a is received by the channel of the locking surface 390. In response to the tension member 340 being in a locked configuration, the engagement end 374 of the tension member 340 retains the chain portion withing the channel of the locking surface 390. It should be appreciated that opposing sides of the locking surface 390 are spaced such that a distance between each side is less than a diameter of a smallest ball of the ball chain 200a. This restricts movement of the ball chain operator 200a relative to the housing assembly 302 when the ball chain operator 200a is received by the locking surface 390.
With reference back to FIGS. 30-31, the tension device 300 includes a wall mount aperture 383. As illustrated in FIG. 30, the first housing member 304 defines a first wall mount aperture 383a. As illustrated in FIG. 31, the second housing member 308 defines a second wall mount aperture 383b. In response to the first and second housing members 304, 308 fastening together, the first and second wall mount apertures 383a, 383b align to define the wall mount aperture 383. The wall mount aperture 383 is configured to receive a fastener (a screw, etc.) to mount the tension device 300 to a surface (e.g., a wall, a window frame, etc.).
In operation, the tension device 300 operates substantially the same as the tension device 100. To facilitate operation of the continuous looped operator 200a, the tension device 300 must be actuated from the locked configuration (shown in FIGS. 29-34) to the unlocked configuration (not shown, but analogous to the tension member position shown in FIG. 12). To transition the tension device from the first configuration (or locked configuration) to the second configuration, or unlocked configuration, a first locking assembly is first actuated to an unlocked arrangement. More specifically, the projections 356, 356a are disengaged from their respective apertures 332, 332a. To disengage the projections 356, 356a from each respective aperture 332, 332a, a force is applied to each projection 356, 356a sufficient to overcome the bias applied by the respective second biasing member 348, 348a. Once the bias is overcome, each projection 356, 356a is withdrawn from the respective aperture 332, 332a. In one example of an embodiment, a user can press the projections 356, 356a towards each other, like a button, to overcome the bias applied by the second biasing members 348, 348a and disengage the projections 356, 356a from each aperture 332, 332a. In another example of an embodiment, a user can use a tool (not shown) configured to be received by each aperture 332, 332a. The tool can be inserted into the apertures 332, 332a and used to overcome the bias applied by the second biasing members 348, 348a to compress the projection 356, 356a out of engagement with the respective aperture 332, 332a.
With the first locking assembly in an unlocked arrangement, such that the projections 356, 356a are disengaged from the apertures 332, 332a, the second locking assembly is next actuated to an unlocked arrangement. More specifically, the tension member 340 is configured to slide relative to the housing assembly 302 along the first axis 352. To unlock the second locking assembly, a user applies sufficient force to overcome the bias applied by the first biasing member 344 onto the tension member 340. As the tension member 340 slides away from the locking surface 390, the tension member 340 frees the continuous looped operator 200a from engagement with the locking surface 390. The tension member 340 continues to slide away from the locking surface 390 until reaching the unlocked configuration. In this unlocked configuration, the continuous looped operator 200a is free to move relative to the tension device 300, and more specifically the housing assembly 302. The continuous looped operator 200a is configured to slide along the engagement surface 376 of the tension member 340. The engagement end 374 of the tension member 340 guides the continuous looped operator 200a through the interior passage 320 as the continuous looped operator 200a moves relative to the tension device 300, and more specifically the housing assembly 302. Movement of the continuous looped operator 200a relative to the tension device 300, and more specifically the housing assembly 302, facilitates operation of an associated window shade.
It should be appreciated that the continuous looped operator 200a applies tension to the tension member 340 to overcome the bias applied by the first biasing member 344 and maintain the tension device 300 in the unlocked configuration. As such, the continuous looped operator 200a remains in contact with the tension member 340. Proper installation of the tension device 300 will maintain the tension applied by the continuous looped operator 200a to the tension member 340 to overcome the bias applied by the first biasing member 344 to maintain the unlocked configuration. For example, a user will disengage the projections 356, 356a from the apertures 332, 332a, and then apply a force onto the housing assembly 302 sufficient to apply tension onto the continuous looped operator 200a such that the tension member 340 overcomes the bias applied by the first biasing member 344 to slide the tension member 340 along the first axis 352. In this position the tension device 300 is prepared for proper installation.
The tension device 300 is mounted to a surface (e.g., a wall, a window frame, etc.) after transitioning the tension device 300 from the locked configuration to the unlocked configuration. A fastener (e.g., a screw, a nail, etc.) is inserted into the wall mount aperture 383, and then engaged with the surface. The tension device 300 is mounted to the surface with the tension member 340 in the unlocked configuration, completing proper installation.
Once proper installation has occurred, the tension device 300 maintains proper tension on the continuous looped operator 200a. The tension device 300 remains in the unlocked configuration, and the continuous looped operator 200a is free to operate.
If proper installation is interrupted such that the tension device 300 is no longer properly fastened to the surface, tension will be removed from the continuous looped operator 200a. The tension device 300 will immediately responsively transition from the unlocked configuration back to the locked configuration. More specifically, the first biasing member 344 will apply the biasing force onto the tension member 340, sliding the tension member 340 towards the locking surface 390. The continuous looped operator 200a will be received by the channel defined by the locking surface 390. With a chain portion of the ball chain looped operator 200a received by the channel of the locking surface 390, and the tension member 340 blocking removal of the ball chain looped operator 200a from the channel of the locking surface 390, the looped operator 200a is restricted from movement. This locks the second locking assembly. Concurrently, or shortly after locking of the second locking assembly, the first locking assembly engages and locks. The projections 356, 356a slides along respective channels 362, 362a until the projections 356, 356a are received by respective apertures 332, 332a. Once the projections 356, 356a are received by the respective apertures 332, 332a, the second biasing members 348, 348a apply a biasing force to the respective projections 356, 356a to maintain their position within the respective aperture 332, 332a. In this locked configuration, the continuous looped operator 200a is restricted (or locked) from movement relative to the tension device 300 (or the housing assembly 302). In the locked configuration, the tension device 300 prevents the window covering from operating, as the continuous looped operator 200a is restricted from movement. In addition, to return to the unlocked configuration, the sequential process of unlocking the first locking assembly, and then unlocking the second locking assembly by applying tension to the continuous looped operator 200a is required.
The tension device 100, 300 disclosed herein realize certain advantages. The tension device 100, 300 is configured to be permanently attached to the continuous looped operator 200, 200a by the manufacturer. It is designed, placed, and shipped in the locked configuration. The tension device 100, 300 restricts the continuous looped operator 200, 200a from operation by movement (or sliding movement) relative to the housing assembly 102, 302 without first performing the sequential process of unlocking (or transitioning form the locked configuration to the unlocked configuration). The sequential process includes at least unlocking the first locking assembly, followed by unlocking the second locking assembly. To remain in the unlocked configuration, the tension device 100, 300 must be properly mounted (or fastened) to a surface (e.g., a wall, a window frame, etc.). Failure to properly mount the tension device 100, 300 requires repetitive execution of the sequential unlocking process to facilitate operation. This is because once tension is removed from the tension device 100, 300, the device automatically transitions from the unlocked configuration to the locked configuration, preventing operation of the continuous looped operator 200, 200a, and in turn preventing the associated window covering from operating. These and other advantages are realized by the disclosure provided herein.
Patent Application
20250194841
