Patent Application
20230349228
The present invention relates to a blind curtain, which is installed at an indoor window, an indoor wall surface, or the like and is used to obtain effects such as view blocking, light adjustment, heating, and indoor interior decoration. Specifically, the present invention relates to a dual blind curtain, in which when an operation of unfolding or winding up a curtain sheet is performed by winding opposite ends of a curtain sheet, which is formed by connecting a plurality of patterns to each other, around two winding shafts in a roll shape, respectively, and then rotating the two winding shafts, the two winding shafts can be freely adjusted to rotate facing each other or rotating along each other, thereby freely adjusting the curtain sheet wound around the winding shaft into a pattern that a consumer wants.
In general, blind curtains are used to block outdoor sunlight, protect indoor privacy, and improve indoor aesthetics, and the blind curtains are used in various forms, such as vertical blinds, horizontal blinds, overlapping-type blinds, or roll-type blinds.
Among them, in detail, the roll-type blind has a typical configuration in which a screen is wound on an outer periphery surface, a winding pipe provided at an end thereof with a handle is installed on an upper portion of an opening, the winding pipe is provided therein with a clutch and a rotation shaft, and an operative string is installed on one end of the winding pipe to interwork with the rotation shaft.
In the roll-type blind having the configuration as described above, the screen is wound or unfolded by selective pulling of the operative string, which is wound around the rotation shaft and divided into two strings to fall down.
The existing blind curtain satisfies the needs of consumers to some extent in terms of practicality, but does not satisfy the needs of various consumers in terms of interior decoration, which is another purpose of curtains. This is because in general the blind curtain uses a curtain sheet including one pattern, so that unless the entire blind curtain is replaced, there is no choice but to see the same curtain sheet all the time, resulting in a considerable problem in trying to obtain various effects required by customers, such as when trying to change interior decoration.
In order to satisfy the various needs for the interior decoration of customers as described above, the present inventor has solved the problem by installing a dual winding roll having two rotation shafts on a curtain model manufactured by connecting two or more curtain sheets in a height direction. Therefore, a device, in which two winding rolls are connected to each other to operate a plurality of curtain sheets, needs to have a unit that identically maintains an amount of the curtain unwinding from one shaft and an amount of the curtain winding around the other shaft due to a difference between the amounts of the curtains wound around the shafts, respectively. In this regard, there is a specialty that a rotation ratio at the center of the shaft is not always the same even when the amount of rotation at an outer diameter of the shaft wound with the curtain is the same. Such a specialty is special because high and low rotation ratios are present together, other than the rotation ratio of any one shaft is always high or low, and thus it is difficult to smoothly transmit power in any cases. This phenomenon has been solved using a curtain device, which is provided with a tape belt-type power transmission device and a rotation direction selection unit, devised by the present inventor.
In addition, two important functions of a configuration of a double blind of the present invention may be divided into a curtain circulation device and a curtain vertical opening/closing device, in which the curtain circulation device solves the problem through the tape belt and the rotation direction selection unit, and the curtain vertical opening/closing device solves the problem through a clutch and a push button assembly for operating the clutch, and solves the problem through a scissor clutch and a ball chain guide device instead of the push button assembly, such that it allows consumers to smoothly operate the dual blind by using a sense of use that is the same as that of existing blind products in the market.
However, in the previous invention, since the tape belt is driven through a sprocket provided in the scissor clutch by forming a hole in the tape belt in order to vertically open and close the curtain, it is not easy to secure durability of the tape belt, and as the tape belt is installed through a free fall to a height that is the same as an opening/closing height of the curtain, separate measures are thus required to secure safety related to the prevention of the tape belt from winding around a child's neck, so there is a need to provide a device for solving the above problem.
Therefore, the present invention has been devised to solve the problems, and an object of the present invention is to provide a dual blind curtain that may maximize practicality and durability by radically innovating functional limitations of existing technologies, also eliminating configurations of a rotary gear part, the push button assembly, the scissor clutch, and a lifting device part in the previous invention to construct simplicity and secure the stability by removing exposure of the tape belt, and facilitating the curtain circulation operation and the curtain vertical opening/closing operation by still satisfying a condition in which the dual blind curtain is operated by selectively connecting a rotation force to two shafts according to a rotation direction of a center sprocket, regardless of a difference occurred in a unique rotation amount required by each shaft of the connected rotations of two shafts as necessary and sufficient components.
There is provided a dual blind curtain including: a body frame (100) including an upper plate (110) that forms an upper surface, side plates (120) that are provided on both sides of a bottom surface of the upper plate (110) and formed with a plurality of shaft holes (150), and one or more partition plates (130) that are provided inside the bottom surface of the upper plate (110) and formed with a plurality of shaft holes (150);
a B driving part (200) comprising: a first rotation direction selection part (501) including a center shaft (551) that is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150), and provided on an outer circumferential surface thereof with a locking protrusion (55-1), a center sprocket (571) that is installed on one side of the center shaft (551) and provided with a ball chain (571c) to generate a rotation force, a second idle gear clutch (521b) that is installed to idle around the center shaft (551), provided with a unidirectional connection port (52-b) in one side thereof, and engaged with a main pulley primary gear (511a), a first idle gear clutch (521a) that idles on the center shaft (551), is provided with a unidirectional connection port (52-a) in one side thereof to face the second idle gear clutch (521b) at a predetermined interval, and engages with an auxiliary pulley primary gear (511c), a center nut (531) that is positioned between the first and second idle gear clutches (521a and 521b), provided on an inner surface of a body thereof with a nut groove (53-1), and installed so that the body idles at the shaft hole (150) of the partition plate (130), and a center bolt (541) that rotates in an inner portion of the center nut (531), has a sliding hole (54-2) formed in a center of a body thereof to move left and right of the locking protrusion (55-1), is provided with unidirectional connection ports (54-a and 54-b) on both sides of a bolt body (54-1), respectively, and is provided with a bolt thread (54-3) on an outer circumferential surface of the bolt body (54-1);
a main pulley shaft (27B1) that is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of holes (150); a main pulley (26B1) that is constantly coupled to the main pulley shaft (27B1) and rotates; the main pulley primary gear (511a) that engages with the second idle gear clutch (521b) of the first rotation direction selection part (501) to transmit the rotation force to the main pulley (26B1); a main pulley secondary gear (511b) that engages with a center gear (563) of a connection driving part (400) and transmits the rotation force transmitted to the main pulley (26B1); a winding rod connection port (290a) that connects the rotation force generated in the main pulley (26B1) to a winding rod (630a);
an auxiliary pulley (26B2) that is constantly coupled to an auxiliary pulley shaft (27B2) and rotates, in which the auxiliary pulley (26B2) is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150); an auxiliary pulley primary gear (511c) that engages with the first idle gear clutch (521a) of the first rotation direction selection part (501) to transmit the rotation force to the auxiliary pulley (26B2); an auxiliary pulley secondary gear (511d) that engages with a center gear (564) of the connection driving part (400) and transmits the rotation force transmitted to the auxiliary pulley (26B2); and
a tape belt B (28B) that connects the rotation force of the main pulley (26B1) or the rotation force of the auxiliary pulley (26B2) to each other and is connected to central axes of the main pulley (26B1) and the auxiliary pulley (26B2) to be wound in a stacked manner;
a D driving part (300) comprising: a second rotation direction selection part (502) including a center shaft (552) that is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150), and provided on an outer circumferential surface thereof with a locking protrusion (55-1), a center sprocket (572) that is installed on one side of the center shaft (552) and provided with a ball chain (572c) to generate a rotation force, a first idle gear clutch (522a) that is installed to idle around the center shaft (552), provided with a unidirectional connection port (52-a) in one side thereof, and engaged with a main pulley primary gear (512a), a second idle gear clutch (522b) that idles on the center shaft (552), is provided with a unidirectional connection port (52-b) in one side thereof to face the first idle gear clutch (522a) at a predetermined interval, and engages with an auxiliary pulley primary gear (512c), a center nut (532) that is positioned between the first and second idle gear clutches (522a, 522b), provided on an inner surface of a body thereof with a nut groove (53-1), and installed so that the body idles at the shaft hole (150) of the partition plate (130), and a center bolt (542) that rotates in an inner portion of the center nut (532), has a sliding hole (54-2) formed in a center of a body thereof to move left and right of the locking protrusion (55-1), is provided with unidirectional connection ports (54-a and 54-b) on both sides of the bolt body (54-1), respectively, and is provided with a bolt thread (54-3) on an outer circumferential surface of the bolt body (54-1);
a main pulley shaft (27D1) that is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of holes (150); a main pulley (26D1) that is constantly coupled to the main pulley shaft (27D1) and rotates; a main pulley primary gear (512a) that engages with the first idle gear clutch (522a) of the second rotation direction selection part (502) to transmit the rotation force to the main pulley (26D1); a main pulley secondary gear (512b) that engages with a connection gear set (240) of the connection driving part (400) and transmits the rotation force transmitted to the main pulley (26D1); a winding rod connection port (290b) that connects the rotation force generated in the main pulley (27D1) to a winding rod (630b);
an auxiliary pulley (26D2) that is constantly coupled to an auxiliary pulley shaft (27D2) and rotates, in which the auxiliary pulley (26D2) is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150); an auxiliary pulley primary gear (512c) that engages with the second idle gear clutch (522b) of the second rotation direction selection part (502) to transmit the rotation force to the auxiliary pulley (26D2); an auxiliary pulley secondary gear (512d) that engages with a connection gear set (230) of the connection driving part (400) and transmits the rotation force transmitted to the auxiliary pulley (26D2); and
a tape belt D (28D) that connects the rotation force of the main pulley (26D1) or the rotation force of the auxiliary pulley (26D2) to each other and is connected to central axes of the main pulley (26D1) and the auxiliary pulley (26D2) to be wound in a stacked manner;
the connection driving part (400) comprising: a third rotation direction selection part (503) including a center shaft (553) that is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150), and provided on an outer circumferential surface thereof with a locking protrusion (55-1), a center gear (563) that is installed on one side of the center shaft (553) and engaged with the main pulley secondary gear (511b) of the B driving part (200) to receive the rotation force, a first idle gear clutch (523a) that is installed to idle around the center shaft (553) and provided with a unidirectional connection port (52-a) in one side thereof, a second idle gear clutch (523b) that idles on the center shaft (553) and is provided with a unidirectional connection port (52-b) in one side thereof to face the first idle gear clutch (523a) at a predetermined interval, a center nut (533) that is positioned between the first and second idle gear clutches (523a and 523b), provided on an inner surface of a body thereof with a nut groove (53-1), and installed so that the body idles at the shaft hole (150) of the partition plate (130), a center bolt (543) that rotates in an inner portion of the center nut (533), has a sliding hole (54-2) formed in a center of a body thereof to move left and right of the locking protrusion (55-1), is provided with unidirectional connection ports (54-a and 54-b) on both sides of a bolt body (54-1), respectively, and is provided with a bolt thread (54-3) on an outer circumferential surface of the bolt body (54-1), and the connection gear set (230) that engages with the auxiliary pulley secondary gear (512d) and transmits the rotation force of the second idle gear clutch (523b) to the auxiliary pulley secondary gear (512d); and
the fourth rotation direction selection part (504) including a center shaft (554) that is installed to idle on the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150), and provided on an outer circumferential surface thereof with a locking protrusion (55-1), a center gear (564) that is installed on one side of the center shaft (554) and engaged with the auxiliary pulley secondary gear (511d) of the B driving part (200) to receive the rotation force, a first idle gear clutch (524a) that is installed to idle around the center shaft (554) and provided with a unidirectional connection port (52-a) in one side thereof, a second idle gear clutch (524b) that idles on the center shaft (553) and is provided with a unidirectional connection port (52-b) in one side thereof to face the first idle gear clutch (524a) at a predetermined interval, a center nut (533) that is positioned between the first and second idle gear clutches (524a and 524b), provided on an inner surface of a body thereof with a nut groove (53-1), and installed so that the body idles at the shaft hole (150) of the partition plate (130), a center bolt (543) that rotates in an inner portion of the center nut (533), has a sliding hole (54-2) formed in a center of a body thereof to move left and right of the locking protrusion (55-1), is provided with unidirectional connection ports (54-a and 54-b) on both sides of a bolt body (54-1), respectively, and is provided with a bolt thread (54-3) on an outer circumferential surface of the bolt body (54-1), and the connection gear set (240) that engages with the main pulley secondary gear (512b) and transmits the rotation force of the first idle gear clutch (524a) to the main pulley secondary gear (512b); and
a curtain part (600) installed to idle on the side plate (120) and the partition plate (130), which is provided inside the bottom surface of the upper plate (110) of the body frame (100) and formed with the plurality of shaft holes (150), and including a curtain sheet (610) that is made by connecting one or more various pattern sheets and has one end wound around the winding rod (630a) connected by the winding rod connection ports (290a and 290b) and an opposite end wound around another winding rod (630b) by the rotation force of the main pulley shafts (27B1 and 27D1), and a weight bar (620) that is formed on a center of the curtain sheet (610) wound around opposite ends thereof.
When the double blind curtain according to the present invention is provided, effects of creating various types of curtain can be expected using one product of the present invention, such as creating various interior atmospheres of a curtain sheet on which various photos are printed, selecting a curtain sheet having different patterns and a configuration of mesh sheet-stripe sheet-mesh sheet-translucent sheet-mesh sheet-blackout sheet according to an amount of sunlight and selected for the purpose of covering upper and lower ranges of view and day and night, and using a curtain sheet on which a message is recorded for learning and publicity through an automatic circulation operation.
Further, a danger of winding around the child's neck can be removed by constructing simplicity of the configuration and removing the exposure of the tape belt, and simultaneously, a function of facilitating the curtain circulation operation and the curtain vertical opening/closing operation by satisfying a condition in which the dual blind curtain is operated by selectively connecting a rotation force to two shafts according to the rotation direction of the center sprocket, regardless of a difference occurred in a unique rotation amount required by each shaft of the connected rotations of two shafts as necessary and sufficient components of the device.
Hereinafter, preferred embodiments will be described in detail with respect to the accompanying drawings.
As shown in the accompanying drawings (see
The body frame 100 includes an upper plate 110 that forms an upper surface, side plates 120 that are provided on both sides of a bottom surface of the upper plate 110 and formed with a plurality of shaft holes 150, and one or more partition plates 130 that are provided inside the bottom surface of the upper plate 110 and formed with a plurality of shaft holes 150.
As shown in the accompanying drawing (see
The B driving part 200, the D driving part 300, and the connection driving part 400 are driven by a rotation force of center sprockets 571 and 572 rotated by ball chains 571c and 572c, which are manually operated by a user, the same operation principle applies to the B driving part 200 including a first rotation direction selection part 501 and a tape belt B 28B, the D driving part 300 including a second rotation direction selection part 502 and a tape belt D 28D, and the connection driving part 400 including a third rotation direction selection part 503 and a fourth rotation direction selection part 504, and the B driving part 200, the D driving part 300, and the connection driving part 400 will be collectively referred to as a rotation direction selection part 500 and first described with reference to the drawing (see
As shown in the drawing (see
With the same configuration and principle as described in the rotation direction selection part 500, the first rotation direction selection part 501, the second rotation direction selection part 502, the third rotation direction selection part 503, and the fourth rotation direction selection part 504 selectively transmit the rotation force and the rotation direction of the center sprockets 571 and 572 or the center gears 563 and 564 to the first idle gear clutches 521a, 522a, 523a, and 524a and second idle gear clutches 521b, 522b, 523b, and 524b.
The following describes a connection between the tape belt B 28B, the tape belt D 28D, and a shaft with respect to the drawing (see
As described in the configuration collectively referred to as the rotation direction selection part 500, when the rotation direction of the center sprocket 571 is determined by the ball chain 571c pulled in any one direction of the first rotation direction selection part 501, the rotation force is selectively transmitted to either a main pulley primary gear 511a provided on the main pulley shaft 27B1 engaged with the first idle gear clutch 521a or an auxiliary pulley primary gear 511c provided on the auxiliary pulley shaft 27B2 engaged with the second idle gear clutch 521b accordingly, and in this case, a main pulley 26B1 rotating together with the main pulley primary gear 511a and an auxiliary pulley 26B2 rotating together with the auxiliary pulley primary gear 511c are connected to each other by the tape belt B 28B. In such a configuration, the tape belt B 28B is stacked on and wound around the main pulley 26B1 and the auxiliary pulley 26B2 according to the rotation of the shaft, like the curtain sheet 610 wound around the winding rods 630a and 630b, thereby serving to transmit the rotation force of one of the two shafts 27B1 and 27B2 to each other.
Meanwhile, when the rotation direction of a center sprocket 572 is determined by a ball chain 572c pulled in any one direction from the second rotation direction selection part 502 in the same manner as the configuration and connection structure of the first rotation direction selection part 501 and the tape belt B 28B, the rotation force is selectively transmitted to either the main pulley primary gear 512a provided on the main pulley shaft 27D1 engaged with the first idle gear clutch 522a or the auxiliary pulley primary gear 512c provided on the auxiliary pulley shaft 27D2 engaged with the second idle gear clutch 522b accordingly, and in this case, a main pulley 26D1 rotating together with the main pulley primary gear 512a and an auxiliary pulley 26D2 rotating together with the auxiliary pulley primary gear 512c are connected to each other by the tape belt D 28D. In such a configuration, the tape belt D 28D is stacked on and wound around the main pulley 26D1 and the auxiliary pulley 26D2 according to the rotation of the shaft, like the curtain sheet 610 wound around the winding rods 630a and 630b, thereby serving to transmit the rotation force of one of the two shafts 27D1 and 27D2 to each other.
Describing the tape belts 28B and 28D in more detail, the tape belt B 28B and the tape belt D 28D have the same shape and function, but a winding direction of the curtain sheet 610 according to a direction of the shaft rotation may be manipulated in an intended circulation direction or a vertical direction when an installation direction is formed to have a winding shape symmetrical by 180 degrees, and the number of winding rotations of the tape belts 28B and 28D wound around the main pulleys 26B1 and 26D1, respectively needs to have the number of winding rotations the same as that of the curtain sheet 610 wound around the winding rods 630a and 630b corresponding to each other. In addition, as shown in the drawing (see
This is because the rotation force is selectively connected to two shafts according to the rotation direction of the center sprocket regardless of a difference occurred in a unique rotation amount required by each shaft in the rotation of connected two shafts, which is the main principle of the present invention, thus satisfying a condition of manipulating the operation of the curtain as intended.
The following is a description that the B driving part 200 and the D driving part 300 are connected to the rotation force by the connection driving part 400. First, as described in the rotation direction selection part 500 and as shown in the drawing (see
Next, as described in the rotation direction selection part 500 and as shown in the drawing (see
In this case, the configuration of the connection gear sets 230 and 240 serves to transmit the same rotation ratio and rotation direction as a component that is provided with a pair of connection gears 233a:233b, and 244a:244b on opposite ends of connection gear shafts 233c and 244c installed to rotate on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, and engages with each gear.
Hereinabove, in order to explain an operation procedure for forming each configuration provided in the present invention,
Each operation method may be easily understood by applying the configuration and operation principle described in the rotation direction selection part 500 along a direction of the arrow, the general power transmission theory, the rotation principle of the engaging gear, the rotation principle of the rotation shaft connected by the belt, and the like, and thus additional description thereof will be omitted.
Meanwhile, after the entire curtain sheet 610 moves to the winding rod 630b through the downward circulation drive (see
The following describes another embodiment of the present invention, and
relates to a unidirectional complex clutch including a latch wheel which is a tool for transmitting unidirectional power and a pawl guide groove which guides a movement of the pawl.
As shown in the accompanying drawings (see
the connection driving part 400 includes: a unidirectional complex clutch R 505 including the center shaft 553 that is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 formed with the plurality of shaft holes 150, a latch wheel idle gear 750R3 that is provided with a latch wheel, which idles on one end of the center shaft 553 to transmit clockwise rotation to one side thereof, and transmits the rotation force to the auxiliary pulley secondary gear 512d through the engaged connection gear set 230, a pawl shaft fixing idle gear 760c that is positioned on an opposite end of the center shaft 553 to receive the rotation force from the main pulley secondary gear 511b, and installed with one or more pawl shafts 720c each having a pawl 58R3 disposed thereon, in which the pawl 58R3 engages with the latch wheel idle gear 750R3 in a predetermined condition, a pawl shaft guide hole 59c that is positioned between the latch wheel idle gear 750R3 and the pawl shaft fixing idle gear 760c and through which the pawl shaft 720c passes, a pawl guide idle disc 740R3 that is provided with one or more pawl guide grooves 56R3 which make contact with the pawl shaft guide hole 59c to control a movement of the pawl 58R3 in a predetermined condition, a return bar spring 57c that is fixed to the center shaft 553 to return the pawl shaft 720c to a predetermined position of the pawl shaft guide hole 59c when there is no rotation load on the pawl shaft 720c, and a deceleration roller 60a that generates a load based on a rotation speed of the pawl guide idle disc 740R3; and
a unidirectional complex clutch L 506 including the center shaft 554 that is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 formed with the plurality of shaft holes 150, a latch wheel idle gear 750L1 that is provided with a latch wheel, which idles on one end of the center shaft 554 to transmit counterclockwise rotation to one side thereof, and transmits the rotation force to the main pulley secondary gear 512b through the engaged connection gear set 240, a pawl shaft fixing idle gear 760d that is positioned on an opposite end of the center shaft 554 to receive the rotation force from the auxiliary pulley secondary gear 511d, and installed with one or more pawl shafts 720d each having a pawl 58L1 disposed thereon, in which the pawl 58L1 engages with the latch wheel idle gear 750L1 in a predetermined condition, a pawl shaft guide hole 59d that is positioned between the latch wheel idle gear 750L1 and the pawl shaft fixing idle gear 760d and through which the pawl shaft 720d passes, a pawl guide idle disc 740L1 that is provided with one or more pawl guide grooves 56L1 which make contact with the pawl shaft guide hole 59d to control a movement of the pawl 58L1 in a predetermined condition, a return bar spring 57d that is fixed to the center shaft 554 to return the pawl shaft 720d to a predetermined position of the pawl shaft guide hole 59d when there is no rotation load on the pawl shaft 720d, and a deceleration roller 60b that generates a load based on a rotation speed of the pawl guide idle disc 740L1.
Since the unidirectional complex clutch R 505 and the unidirectional complex clutch L 506 are designed to operate in opposite directions to each other, a type of the configuration and the principle of the operation are the same, a description of the unidirectional complex clutch L 506 will be described first through the accompanying drawing (see
Meanwhile, the rotation force generated in the D driving part 300 reaches the auxiliary pulley secondary gear 512d or the auxiliary pulley secondary gear 512b and is transmitted to the latch wheel idle gears 750R3 and 750L1 engaged by the connection gear sets 230 and 240. However, currently, there is no rotation load on the pawl shaft fixing idle gears 760c and 760d, and thus the pawl shaft 720d is returned to its original position due to the force of the return rod spring 57d, so that the positions of the pawls 58R3 and 58L1 are in a state in which the rotation force is cut off. Therefore, the unidirectional complex clutch R 505 and the unidirectional complex clutch L 506 operate in the same manner as the third rotation direction selection part 503 and the fourth rotation direction selection part 504.
The following describes another embodiment of the present invention, and
relates to a bidirectional complex clutch 507 that performs the same operation as the rotation direction selection part 500 having a unidirectional complex clutch in both directions.
As shown in the accompanying drawing (see
a bidirectional complex clutch 507 includes: an idle sprocket 710 that has one or more pawl shaft control grooves 711 and 712 provided on both sides thereof at a position spaced apart from each other in an opposite direction around the center shaft 551 installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150; latch wheel idle gears 750R1 and 750R2 that are installed to face a same component based on the idle sprocket 710, are first provided with latch wheels which idle on opposite ends of the center shaft 551 to transmit unidirectional rotation to one side thereof, and transmits a generated rotation force to another shaft; pawl shaft fixing idle gears 730a and 730b that are positioned on both sides of the idle sprocket 710, and installed with one or more pawl shafts 720a and 720b having pawls 58R1 and 58R2 disposed thereon, in which the pawls 58R1 and 58R2 are inserted into the pawl shaft control grooves 711 and 712 to receive the rotation force and engage with the latch wheel idle gears 750R1 and 750R2 in a predetermined condition; pawl shaft guide holes 59a and 59b that are positioned between the latch wheel idle gears 750R1 and 750R2 and the pawl shaft fixing idle gears 730a and 730b, respectively and through which the pawl shafts 720a and 720b pass; pawl guide idle discs 740R1 and 740R2 that are provided with one or more pawl guide grooves 56R1 and 56R2 which make contact with the pawl shaft guide holes 59a and 59b to control a movement of the pawls 58R1 and 58R2 in a predetermined condition; and return bar springs 57a and 57b that are installed on the center shaft 551 to return the pawl shafts 720a and 720b to a predetermined position of the pawl shaft guide holes 59a and 59b when there is no rotation load on the pawl shafts 720a and 720b.
Although the bidirectional complex clutch 507 has the same principle (see
In the idle sprocket 710 located at the center of the bidirectional complex clutch 507, one or more pawl shaft control grooves 711 and 712 are provided in both sides thereof at a position spaced apart from each other in an opposite direction by a distance between the movements R1, R2, and R3 of the pawl shaft. This means that when the idle sprocket 710 rotates in one direction (first, on the assumption of counterclockwise rotation: affect on the configuration on the left side in the accompanying drawing (see
As described above, the idle sprocket 710 rotates in a state in which after the rotation force of the idle sprocket 710 located at the center of the bidirectional complex clutch 507 is connected to one of the latch wheel idle gears 750R1 and 750R2, the rotation force on the other side is not coupled, such that the desired purpose of the operation is achieved and the same operation as the rotation direction selection parts 501 and 502 is performed.
The following describes another embodiment of the present invention, and
the unidirectional complex clutch R 505 and the unidirectional complex clutch L 506 are simultaneously connected to the auxiliary pulley secondary gear 511d of the B driving part 200 and the main pulley secondary gear 512b of the D driving part 300, such that it is possible to shorten a power transmission path and simplify the configuration.
As shown in the accompanying drawing (see
there is provided a dual blind curtain including: a body frame 100 including an upper plate 110 that forms an upper surface, side plates 120 that are provided on both sides of a bottom surface of the upper plate 110 and formed with a plurality of shaft holes 150, and one or more partition plates 130 that are provided inside the bottom surface of the upper plate 110 and formed with a plurality of shaft holes 150;
a B driving part 200 comprising: a first rotation direction selection part 501 including a center shaft 551 that is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, and provided on an outer circumferential surface thereof with a locking protrusion 55-1, a center sprocket 571 that is installed on one side of the center shaft 551 and provided with a ball chain 571c to generate a rotation force, a second idle gear clutch 521b that is installed to idle around the center shaft 551, provided with a unidirectional connection port 52-b in one side thereof, and engaged with a main pulley primary gear 511a, a first idle gear clutch 521a that idles on the center shaft 551, is provided with a unidirectional connection port 52-a in one side thereof to face the second idle gear clutch 521b at a predetermined interval, and engages with an auxiliary pulley primary gear 511c, a center nut 531 that is positioned between the first and second idle gear clutches 521a and 521b, provided on an inner surface of a body thereof with a nut groove 53-1, and installed so that the body idles at the shaft hole 150 of the partition plate 130, and a center bolt 541 that rotates in an inner portion of the center nut 531, has a sliding hole 54-2 formed in a center of a body thereof to move left and right of the locking protrusion 55-1, is provided with unidirectional connection ports 54-a and 54-b on both sides of a bolt body 54-1, respectively, and is provided with a bolt thread 54-3 on an outer circumferential surface of the bolt body 54-1;
a main pulley shaft 27B1 that is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of holes 150; a main pulley 26B1 that is constantly coupled to the main pulley shaft 27B1 and rotates; the main pulley primary gear 511a that engages with the second idle gear clutch 521b of the first rotation direction selection part 501 to transmit the rotation force to the main pulley 26B1; a winding rod connection port 290a that connects the rotation force generated in the main pulley 26B1 to a winding rod 630a;
an auxiliary pulley 26B2 that is constantly coupled to an auxiliary pulley shaft 27B2 and rotates, in which the auxiliary pulley 26B2 is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150; an auxiliary pulley primary gear 511c that engages with the first idle gear clutch 521a of the first rotation direction selection part 501 to transmit the rotation force to the auxiliary pulley 26B2; an auxiliary pulley secondary gear 511d that engages with pawl shaft fixing idle gears 760c, 760d of a connection driving part 400 and transmits the rotation force transmitted to the auxiliary pulley 26B2; and
a tape belt B 28B that connects the rotation force of the main pulley 26B1 or the rotation force of the auxiliary pulley 26B2 to each other and is connected to central axes of the main pulley 26B1 and the auxiliary pulley 26B2 to be wound in a stacked manner;
a D driving part 300 including: a main pulley shaft 27D1 that is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of holes 150; a main pulley secondary gear 512b that is installed on one end of the main pulley shaft 27D1 and connected to latch wheel idle gears 750R3 and 750L1 of the connection driving part 400; a center sprocket 572 that is installed on the main pulley shaft 27D1 and provided with a ball chain 572c to generate the rotation force; and a winding rod connection port 290b connects the rotation force generated in the main pulley shaft 27D1 to a winding rod 630b;
the connection driving part 400 comprising: a unidirectional complex clutch R 505 including a latch wheel idle gear 750R3 that is provided with a latch wheel, which idles on one end of a center shaft 553 to transmit clockwise rotation to one side thereof, and engaged with the main pulley secondary gear 512b to transmit the rotation force, in which the center shaft 553 is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, a pawl shaft fixing idle gear 760c that is positioned on an opposite end of the center shaft 553 to receive the rotation force from the auxiliary pulley secondary gear 511d, and installed with one or more pawl shafts 720c each having a pawl 58R3 disposed thereon, in which the pawl 58R3 engages with the latch wheel idle gear 750R3 in a predetermined condition, a pawl shaft guide hole 59c that is positioned between the latch wheel idle gear 750R3 and the pawl shaft fixing idle gear 760c and through which the pawl shaft 720c passes, a pawl guide idle disc 740R3 that is provided with one or more pawl guide grooves 56R3 which make contact with the pawl shaft guide hole 59c to control a movement of the pawl 58R3 in a predetermined condition, a return bar spring 57c that is fixed to the center shaft 553 to return the pawl shaft 720c to a predetermined position of the pawl shaft guide hole 59c when there is no rotation load on the pawl shaft 720c, and a deceleration roller 60a that generates a load based on a rotation speed of the pawl guide idle disc 740R3; and
the unidirectional complex clutch L 506 including a latch wheel idle gear 750L1 that is provided with a latch wheel, which idles on one end of a center shaft 554 to transmit counterclockwise rotation to one side thereof, and engaged with the main pulley secondary gear 512b to transmit the rotation force, in which the center shaft 554 is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, a pawl shaft fixing idle gear 760d that is positioned on an opposite end of the center shaft 554 to receive the rotation force from the auxiliary pulley secondary gear 511d, and installed with one or more pawl shafts 720d each having a pawl 58L1 disposed thereon, in which the pawl 58L1 engages with the latch wheel idle gear 750L1 in a predetermined condition, a pawl shaft guide hole 59d that is positioned between the latch wheel idle gear 750L1 and the pawl shaft fixing idle gear 760d and through which the pawl shaft 720d passes, a pawl guide idle disc 740L1 that is provided with one or more pawl guide grooves 56L1 which make contact with the pawl shaft guide hole 59d to control a movement of the pawl 58L1 in a predetermined condition, a return bar spring 57d that is fixed to the center shaft 554 to return the pawl shaft 720d to a predetermined position of the pawl shaft guide hole 59d when there is no rotation load on the pawl shaft 720d, and a deceleration roller 60b that generates a load based on a rotation speed of the pawl guide idle disc 740L1; and
a curtain part 600 installed to idle on the side plate 120 and the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, and including a curtain sheet 610 that is made by connecting one or more various pattern sheets and has one end wound around the winding rod 630a connected by the winding rod connection ports 290a and 290b and an opposite end wound around another winding rod 630b by the rotation force of the main pulley shafts 27B1 and 27D1, and a weight bar 620 that is formed on a center of the curtain sheet 610 wound around opposite ends thereof.
In the above configuration, as briefly described above, the unidirectional complex clutch R 505 and the unidirectional complex clutch L 506 are simultaneously connected to the auxiliary pulley secondary gear 511d of the B driving part 200 and the main pulley secondary gear 512b of the D driving part 300, and in more detail, the pawl shaft fixing idle gears 760c and 760d idle on individual shafts and simultaneously connected to the auxiliary pulley secondary gear 511d of the B driving part 200. Thus, it generates a rotation force that is always in the same direction without interfering with mutual rotation, and the rotation force is transmitted to the main pulley secondary gear 512b by using only one of couplings (the pawl 58R3 and the latch wheel idle gear 750R3 or the pawl 58L1 and the latch wheel idle gear 750L1) formed by the pawl guide discs 740R3 and 740L1 provided on the individual center shafts 553 and 554.
Therefore, the initial rotation force generated by the center sprocket 571 reaches the winding rod connection ports 290a and 290b of the both shafts 27B1 and 27B2 through the tape belt B 28B and is transmitted to the winding rods 630a and 630b, such that the rotation force enables circulation drive of the curtain part 600. Meanwhile, the rotation of the center sprocket 572 provided on the main pulley shaft 27D1 enables vertical drive of the curtain part 600, in this case, the rotation force of the center sprocket 572 is not transmitted to the latch wheel idle gears 750R3 and 750L1 because there is no load on the B driving part 200.
Through such a configuration, it is possible to shorten a power transmission path and simplify the configuration.
The following describes another embodiment of the present invention, and
in the present invention (see
As shown in the accompanying drawing (see
there is provided a dual blind curtain including: a body frame 100 including an upper plate 110 that forms an upper surface, side plates 120 that are provided on both sides of a bottom surface of the upper plate 110 and formed with a plurality of shaft holes 150, and one or more partition plates 130 that are provided inside the bottom surface of the upper plate 110 and formed with a plurality of shaft holes 150;
a B driving part 200 comprising: a first rotation direction selection part 501 including a unidirectional complex clutch L2509 which includes a center shaft 551 that is installed to idle on the partition plate 130, which is provided inside the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, a center sprocket 571 that is installed on one side of the center shaft 551 and provided with a ball chain 571c to generate a rotation force, a center gear 561 that transmits the rotation force of the center sprocket 571 to pawl shaft fixing idle gears 760e and 760f of the unidirectional complex clutch R2508 and the unidirectional complex clutch L2509, respectively,
a latch wheel fixing rotation gear 750L2 that is provided with a latch wheel, which is installed on one end of the auxiliary pulley shaft 27B2 to transmit counterclockwise rotation to one side thereof, in which the auxiliary pulley shaft 27B2 is installed to idle on the partition plate 130, which is provided on the inner side of the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, a pawl shaft fixing idle gear 760f that is positioned on an opposite end of the auxiliary pulley shaft 27B2 to receive the rotation force from the center gear 561, and installed with one or more pawl shafts 720f each having a pawl 58L2 disposed thereon, in which the pawl 58L2 engages with the latch wheel fixing rotation gear 750L2 in a predetermined condition, a pawl shaft guide hole 59f that is positioned between the latch wheel fixing rotation gear 750L2 and the pawl shaft fixing idle gear 760f and through which the pawl shaft 720f passes, a pawl guide idle disc 740L2 that is provided with one or more pawl guide grooves 56L2 which make contact with the pawl shaft guide hole 59f to control a movement of the pawl 58L2 in a predetermined condition, a return circular spring 57f that is installed on one side of the pawl guide idle disc 740L2 to idle with respect to a shaft to return the pawl shaft 720f to a predetermined position of the pawl shaft guide hole 59f when there is no rotation load on the pawl shaft 720f, and a deceleration roller 60d that generates a load based on a rotation speed of the pawl guide idle disc 740L2, and
the complex clutch R2508 which includes a latch wheel fixing rotation gear 750R4 that is provided with a latch wheel provided on one end of the main pulley shaft 27B1 to transmit clockwise rotation to one side thereof, and transmits the rotation force to a shaft, in which the main pulley shaft 27B1 is installed to idle on the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 has and formed with the plurality of shaft holes 150, a pawl shaft fixing idle gear 760e that is positioned on an opposite end of the main pulley shaft 27B1 to receive the rotation force from the center gear 561, and installed with one or more pawl shafts 720e each having a pawl 58R4 disposed thereon, in which the pawl 58R4 engages with the latch wheel fixing rotation gear 750R4 in a predetermined condition, a pawl shaft guide hole 59e that is positioned between the latch wheel fixing rotation gear 750R4 and the pawl shaft fixing idle gear 760e and through which the pawl shaft 720e passes, a pawl guide idle disc 740R4 that is provided with one or more pawl guide grooves 56R4 which make contact with the pawl shaft guide hole 59e to control a movement of the pawl 58R4 in a predetermined condition, a return circular spring 57e that is installed on one side of the pawl guide idle disc 740R4 to idle with respect to a shaft to return the pawl shaft 720e to a predetermined position of the pawl shaft guide hole 59e when there is no rotation load on the pawl shaft 720e, and a deceleration roller 60c that generates a load based on a rotation speed of the pawl guide idle disc 740R4;
a main pulley 26B1 that is constantly coupled to the main pulley shaft 27B1 and rotates; a winding rod connection port 290a that connects the rotation force generated in the main pulley 26B1 to a winding rod 630a;
an auxiliary pulley 26B2 that is constantly coupled to the auxiliary pulley shaft 27B2 and rotates; a winding rod connection port 290b that connects the rotation force transmitted to the auxiliary pulley 26B2 to a winding rod 630b; and
a tape belt B 28B that connects the rotation force of the main pulley 26B1 or the rotation force of the auxiliary pulley 26B2 to each other and is connected to central axes of the main pulley 26B1 and the auxiliary pulley 26B2 to be wound in a stacked manner; and
a curtain part 600 installed to idle on the side plate 120 and the partition plate 130, which is provided inside the bottom surface of the upper plate 110 of the body frame 100 and formed with the plurality of shaft holes 150, and including a curtain sheet 610 that is made by connecting one or more various pattern sheets and has one end wound around the winding rod 630a connected by the winding rod connection ports 290a and 290b and an opposite end wound around another winding rod 630b by the rotation force of the main pulley shafts 27B1 and 27D1, and a weight bar 620 that is formed on a center of the curtain sheet 610 wound around opposite ends thereof.
Describing the invention in detail, a configuration in which the unidirectional complex clutch R 505 and the unidirectional complex clutch L 506 are applied to the connection driving part 400 is changed for the purpose of replacing the first rotation direction selection part 501 and diverted to the unidirectional complex clutch R2508 and the unidirectional complex clutch L2509. Since there is no change in the basic configuration and principle of the operation as compared with the above-described drawings (see
However, as a part that serves to transmit the rotation force generated by organic coupling of the component is changed, a method for coupling the shaft of the part is changed to fixing or idling, and a change in a shape of the return spring accordingly will be described in more detail.
That is, the pawl guide discs 740R1, 740R2, 740R3, and 740L1 are fixedly installed to the connection driving part 400 to transmit the rotation force to the shafts, and accordingly, the return bar springs 57a, 57b, 57d, and 57d are also fixedly installed to the shafts.
In contrast, when applied to the first rotation direction selection part 501, the pawl guide discs 740R1, 740R2, 740R3, and 740L1 are installed to idle on the shafts to have shapes of the pawl guide idle discs 740R4 and 740L2, and accordingly, as the springs, the return circular springs 57e and 57f are installed to idle with respect to the shaft rotation. In addition, as parts for transmitting the rotation force to the shaft, the latch wheel idle gears 750R1, 750R2, 750R3, and 750L1, which are installed to idle on the connection driving part 400, are installed by changing a shape of the shaft coupling into the latch wheel fixing rotation gears 750R4 and 750L2 which are fixedly installed on the shafts.
As will be additionally described herein, even if the pawl guide discs 740R1, 740R2, 740R3, and 740L1 are not fixedly installed to transmit the rotation force on the shafts and installed to idle when applied to the connection driving part 400, they are only responsible for a power connection function, so that it is cleared that there is no problem in the basic operation principle of the invention.
The present invention is a technology that is applicable to a roll blind for a curtain, as well as to transmission of power when the rotation ratio of the two shafts is not constant, but changed, selective transmission of rotation power from one shaft to the two shafts, and connection of power of the two shafts having different rotation directions from each other such that only unidirectional power transmission is possible from one shaft to the other shaft.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2019-0037556 | Mar 2019 | KR | national |
| 10-2019-0118895 | Sep 2019 | KR | national |
| 10-2020-0036341 | Mar 2020 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2020/004084 | 3/26/2020 | WO |
