1. Field of the Invention
The present invention relates to hinge assemblies in general, and more particularly to a hinge assembly for pivotally connecting a lid to a receptacle of a container.
2. Description of the Related Art
Generally, insulated containers, such as coolers for cold drinks or the like, are well known in the art. Typical insulated containers include a box-like receptacle and a lid mounted thereon and pivotable between open and closed positions. The insulated containers further include hinge assemblies connecting the lid to the receptacle for pivotal movement between open and closed positions. Hinge assemblies are known for pivotally connecting the lid to receptacle of insulated containers. Hinge assemblies are described in, for example, U.S. Pat. Nos. 4,696,412 and 3,962,750.
While hinge assemblies for containers, including but not limited to those discussed above, have proven to be acceptable for typical applications and conditions, improvements that may enhance their performance and cost are possible.
The present invention is directed to a hinge assembly for pivotally connecting a lid to a receptacle of a container.
The hinge assembly according to the present invention comprises a first hinge half including a convex edge portion, and a second hinge half pivotally connected to the first hinge half for pivotable movement between a flattened position and a folded position of the hinge assembly. The second hinge half includes a concave nesting depression nestably engaging the convex edge portion of the first hinge half in the folded position of the hinge assembly.
The accompanying drawings are incorporated in and constitute a part of the specification. The drawings, together with the general description given above and the detailed description of the exemplary embodiments and methods given below, serve to explain the principles of the invention. In such drawings:
Reference will now be made in detail to exemplary embodiments and methods of the invention as illustrated in the accompanying drawings, in which like reference characters designate like or corresponding parts throughout the drawings. It should be noted, however, that the invention in its broader aspects is not limited to the specific details, representative devices and methods, and illustrative examples shown and described in connection with the exemplary embodiments and methods.
This description of exemplary embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as “horizontal,” “vertical,” “front,” “rear,” “upper”, “lower”, “top” and “bottom” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing figure under discussion and to the orientation relative to a vehicle body. These relative terms are for convenience of description and normally are not intended to require a particular orientation. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected,” refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. The term “operatively connected” is such an attachment, coupling or connection that allows the pertinent structures to operate as intended by virtue of that relationship. Additionally, the word “a” as used in the claims means “at least one”.
The present invention is related to an insulated container, such as a cooler for cold drinks or the like, generally denoted by reference numeral 10 (as shown in
The hinge halves 18 and 20 are pivotally connected to each other by a hinge pin 19 so as to be pivotable about a hinge axis 17 between a flattened position (as illustrated in
The hinge halves 18 and 20 may be formed of a suitable molded, self-lubricating, non-corrosive plastic material, such as nylon, styrene, polypropylene, polycarbonate, or reinforced plastic, while the hinge pin 19 may be made of stainless steel. The hinge halves 18 and 20, according to exemplary embodiments of the present invention, are formed of the acetal plastic material, which is self-lubricating on the hinge pin made of the 304 stainless steel. The acetal plastic material is also food grade, non-corrosive and offers UV protection.
As best illustrated in
As further illustrated in
The first hinge knuckles 30 are integrally molded with the first hinge leaf 24 so as to radially extend from an inner edge 24i of the first hinge leaf 24. Moreover, each of the first hinge knuckles 30 has a passage 31 therethrough coaxial with the hinge axis 17. Similarly, the second hinge knuckles 38 are integrally molded with the second hinge leaf 32 so as to radially extend from an inner edge 32i of the second hinge leaf 32. Each of the second hinge knuckles 38 has a passage 39 therethrough coaxial with the hinge axis 17 when assembled, as best shown in
As illustrated in
The first hinge leaf 24 of the first hinge half 18 is formed with a convex edge portion 40, while the second hinge leaf 32 of the second hinge half 20 includes a concave nesting depression 42.
The convex edge portion 40 has a convex surface 44 including a tip (or apex) 46 thereof. In the first exemplary embodiment of the present invention, the apex 46 continuously extends a full length LE of the convex surface 44 of the convex edge portion 40 and is oriented substantially parallel to the hinge axis 17. As shown in
In turn, the concave nesting depression 42 has a concave surface 48 extending a length LD1 of the concave nesting depression 42 and is oriented substantially parallel to the hinge axis 17. As shown in
In operation, when the lid 14 of the container 10 is lifted and opened, and the hinge assembly 16 is pivotally moved from the flattened position to the folded position thereof, the convex surface 44 of the convex edge portion 40 of the upper hinge half 18 pivots and nestably engages the concave surface 48 of the nesting depression 42 of the lower hinge half 20 along a full length thereof, resulting in an extremely high strength due to full body nesting, positive stop, self-resting locating with a pre-determined angle δ of restraint.
Therefore, the nesting depression 42 of the lower hinge half 20 functions as a positive stop for the upper hinge half 18 of the hinge assembly 16. The resulting pre-determined angle δ creates an opening angle of the lid 14 that limits the pressure on the hinge screws 22. According to the exemplary embodiment of the present invention, the resulting pre-determined angle δ is 100°-110°.
Moreover, each of the first hinge knuckles 30 has an outer surface forming an eccentric cam surface 52 including at an apex 54. The apex 54 forms a high point of the cam surface 52, i.e., the point on the cam surface 52 farthest from the hinge axis 17. The distance between the hinge axis 17 and the cam surface 52 is less than the distance between the hinge axis 17 and an inner side surface 56i of the second hinge half 20 for the whole length of the cam surface 52 except the apex 54. In other words, the distance between the hinge axis 17 and the apex 54 of the first hinge knuckle 30 is more than the distance between the hinge axis 17 and an inner side surface 56i of the second hinge half 20.
Therefore, upon an upward swinging of the lid 14 from a closed horizontal position resulting from an upward force, the cam surfaces 52 of the first hinge knuckles 30 engage the inner side surface 56i of the second hinge half 20 at the apex 54 of the eccentric cam surface 52, which restrains the opening movement of the lid 14. In order for the lid 14 to be opened, sufficient opening force must be applied to the lid 14 so that t the apex 54 of the cam surface 52 slides over the inner side surface 56i of the second hinge half 20. The amount of opening force required may be predetermined by the amount of resilience formed in the inner side surface 56i and the amount of eccentricity of the apex 54.
Likewise, upon pivoting movement to the full open position shown in
Similarly, each of the second hinge knuckles 38 has an outer surface forming an eccentric cam surface 60 including at an apex 62. The apex 62 forms a high point of the cam surface 60, i.e., the point on the cam surface 60 farthest from the hinge axis 17. The distance between the hinge axis 17 and the cam surface 60 is less than the distance between the hinge axis 17 and an inner side surface 58i of the first hinge half 18 for the whole length of the cam surface 60 except the apex 62. In other words, the distance between the hinge axis 17 and the apex 62 of the second hinge knuckle 38 is more than the distance between the hinge axis 17 and the inner side surface 58i of the first hinge half 18. The second hinge knuckles 38 functions similarly in conjunction with the inner side surface 58i of the first hinge half 18, as the first hinge knuckles 30 functions in conjunction with the inner side surface 56i of the second hinge half 20.
The hinge assemblies 116, according to the second exemplary embodiments of the present invention, are identical. Each of the hinge assemblies 116 includes a pair of inter-fitting first (or upper) and second (or lower) hinge halves 118 and 120, respectively. The hinge halves 118 and 120 are pivotally connected to each other by a hinge pin 19 and secured by hinge screws 22 to the container 10. The hinge halves 18 and 20 are pivotally connected to each other by the hinge pin 19 so as to be pivotable between a flattened position (as illustrated in
The hinge halves 118 and 120 may be formed of a suitable molded, self-lubricating, non-corrosive plastic material, such as nylon, styrene, polypropylene, polycarbonate, or reinforced plastic. The hinge halves 118 and 120, according to the second exemplary embodiments of the present invention, are formed of the acetal plastic material, which is self-lubricating on the hinge pin made of the 304 stainless steel. The acetal plastic material is also food grade, non-corrosive and offers UV protection.
As best illustrated in
As further illustrated in
The first hinge knuckles 130 are integrally molded with the first hinge leaf 124 so as to extend from an inner edge 124i of the first hinge leaf 24 (shown in
As illustrated in
The first hinge leaf 124 of the first hinge half 118 is formed with a convex edge portion 140, while the second hinge leaf 132 of the second hinge half 120 includes a concave nesting depression 142.
The convex edge portion 140 has a convex surface 144 including a tip (or apex) 146 thereof. In the first exemplary embodiment of the present invention, the apex 146 extends substantially a full length LE2 of the convex surface 144 of the convex edge portion 140 and is oriented substantially parallel to the hinge axis 17.
In turn, the concave nesting depression 142 has a concave surface 148 extending a length LD2 and is oriented substantially parallel to the hinge axis 17. As shown in
In operation, when the lid 14 of the container 10 is lifted and opened, and the hinge assembly 116 is pivotally moved from the flattened position to the folded position thereof, the convex surface 144 of the edge portion 140 of the upper hinge half 118 pivots and nestably engages the concave surface 148 of the nesting depression 142 of the lower hinge half 120 along a full length thereof, resulting in an extremely high strength due to full body nesting, positive stop, self-resting locating with a pre-determined angle δ of restraint.
Therefore, the nesting depression 142 of the lower hinge half 120 functions as a positive stop for the upper hinge half 118 of the hinge assembly 116. The resulting pre-determined angle δ creates an opening angle of the lid 114 that limits the pressure on the hinge screws 22. According to the second exemplary embodiment of the present invention, the resulting pre-determined angle δ2 is about 70°-80°.
Moreover, each of the first hinge knuckles 130 has an outer surface forming an eccentric cam surface 152 including at an apex 154. The apex 154 forms a high point of the cam surface 152, i.e., the point on the cam surface 152 farthest from the hinge axis 17. The distance between the hinge axis 17 and the cam surface 152 is less than the distance between the hinge axis 17 and an inner side surface 156i of the second hinge half 120 for the whole length of the cam surface 152 except the apex 154. In other words, the distance between the hinge axis 17 and the apex 154 of the first hinge knuckle 130 is more than the distance between the hinge axis 117 and an inner side surface 156i of the second hinge half 120.
Therefore, upon an upward swinging of the lid 14 from a closed horizontal position resulting from an upward force, the cam surfaces 152 of the first hinge knuckles 130 engage the inner side surface 156i of the second hinge half 20 at the apex 154 of the eccentric cam surface 152, which restrains the opening movement of the lid 14. In order for the lid 14 to be opened, sufficient opening force must be applied to the lid 14 so that t the apex 154 of the cam surface 152 slides over the inner side surface 156i of the second hinge half 120. The amount of opening force required may be predetermined by the amount of resilience formed in the inner side surface 156i and the amount of eccentricity of the apex 154.
Likewise, upon pivoting movement to the full open position shown in
Similarly, each of the second hinge knuckles 138 has an outer surface forming an eccentric cam surface 160 including at an apex 162. The apex 162 forms a high point of the cam surface 160, i.e., the point on the cam surface 160 farthest from the hinge axis 17. The distance between the hinge axis 17 and the cam surface 160 is less than the distance between the hinge axis 17 and an inner side surface 158i of the first hinge half 118 for the whole length of the cam surface 160 except the apex 162. In other words, the distance between the hinge axis 17 and the apex 162 of the second hinge knuckle 138 is more than the distance between the hinge axis 17 and the inner side surface 158i of the first hinge half 118. The second hinge knuckles 138 functions similarly in conjunction with the inner side surface 158i of the first hinge half 118, as the first hinge knuckles 130 functions in conjunction with the inner side surface 156i of the second hinge half 120.
The hinge assembly according to the exemplary embodiments of the present invention has the following advantages over the conventional practice in the art: high strength and full body nesting, positive stop, self resting, controlled motion, pre-determined angle restraint, self lubrication, UV protective acetal injection molded material, food grade, corrosion resistance.
The foregoing description of the exemplary embodiments of the present invention has been presented for the purpose of illustration in accordance with the provisions of the Patent Statutes. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiments disclosed hereinabove were chosen in order to best illustrate the principles of the present invention and its practical application to thereby enable those of ordinary skill in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated, as long as the principles described herein are followed. Thus, changes can be made in the above-described invention without departing from the intent and scope thereof. It is also intended that the scope of the present invention be defined by the claims appended thereto.
This application claims the benefit under 35 U.S.C. 119(e) of U.S. Provisional Patent Application Ser. No. 61/845,028 filed Jul. 11, 2013 by Fraser et al., which is hereby incorporated herein by reference in its entirety and to which priority is claimed.
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2255529 | May | Sep 1941 | A |
3962750 | Buss | Jun 1976 | A |
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8205304 | Le | Jun 2012 | B2 |
20130069511 | Westby | Mar 2013 | A1 |
Number | Date | Country | |
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20150013108 A1 | Jan 2015 | US |
Number | Date | Country | |
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61845028 | Jul 2013 | US |