RESILIENT HINGE FOR EYEGLASSES
The present invention relates to a hinge assembly for use with eyeglasses. In one embodiment, the present invention provides a hinge assembly to attach a temple to a main frame of a pair of eyeglasses. The hinge assembly of this embodiment may include a pair of hinge members (formed as a ball and socket) rotationally attached to one another and each resiliently attached (e.g., using a spring) to a respective one of the temple and the main frame of the pair of eyeglasses.
This application claims the benefit of U.S. Provisional Application Ser. No. 60/793,717, filed Apr. 21, 2006 and U.S. Provisional Application Ser. No. 60/776,234, filed Feb. 24, 2006. Each of the aforementioned applications is incorporated herein by reference in its entirety.
FIELD OF THE INVENTIONThe present invention relates to a hinge assembly for use with eyeglasses.
In one embodiment, the present invention provides a hinge assembly to attach a temple to a main frame of a pair of eyeglasses. The hinge assembly of this embodiment may include a pair of hinge members (formed as a ball and socket) rotationally attached to one another and each resiliently attached (e.g., using a spring) to a respective one of the temple and the main frame of the pair of eyeglasses.
For the purposes of describing and claiming the present invention the term “resiliently attached” is intended to refer to the flexible attachment of one element to another (as compared to an essentially immovable attachment of one element to another). To give one example (which example is intended to be illustrative and not restrictive), one element may be resiliently attached to another element via use of a spring.
BACKGROUND OF THE INVENTIONEyeglasses (e.g., spectacle frames, sunglasses and other types of eyewear) are available in a diverse array of types, shapes, sizes, and materials. Generally, spectacle frames come into three basic types—full, semi or half-rimless, and rimless. A “full” eyeglass frame is comprised of a lens rim that completely encircles the lens. In a “semi-rimless” eyeglass frame there is no rim encircling the bottom or top of the lens. On the other hand, “rimless” eyeglass frames normally have no rim around the lens. For the most part, rimless eyeglasses come in three pieces (two end pieces and the nose bridge), although other variations also exist. In this rimless configuration, the lens or lenses form part of the spectacle frame. Generally, in a rimless configuration, each lens is routinely drilled so that the components fit snugly into the lens. While the invention is described using one specific example of spectacle frames, the invention can, of course, be adapted and used for rimmed, semi-rimless and/or rimless frames. For the purpose of ease and convenience, embodiments illustrated show a “full” eyeglass frame but each figure could be illustrated with any of the varying types of construction detailed above or others known in the art.
Regardless of the type of frame, eyeglasses typically include a pair of temples (that is, right and left temples) that extend rearwardly from the main frame for engagement with the user's ears. Each temple is typically attached to the main frame at a temple region of the main frame by a hinge to allow the temple to be folded behind the main frame for storage when not in use (as discussed above, the main frame may or may not be formed by including one or more lenses and each temple region may or may not be formed at or included on one or more of the lenses—for example, in the full configuration the main frame is distinct from each lens and each temple region is formed at the distinct main frame; in contrast, in the rimless configuration the main frame is formed at least partially from one or more lenses and each temple region is formed at or included on one or more of the lenses).
In some conventional eyeglasses, the hinge permits folding and unfolding of the temple but inhibits movement of the temple in the unfolded state beyond a position in which the temple is generally perpendicular to the main frame. In that unfolded position the hinge is relatively vulnerable to abnormal loads that may occur in use. Such loads may occur, for example, from accidental contact with the eyeglasses or from improper storage. In this regard, the hinge is typically one of the more vulnerable components of the eyeglasses and, accordingly, damage to the hinge frequently occurs.
Among those benefits and improvements that have been disclosed, other objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying figures. The figures constitute a part of this specification and include illustrative embodiments of the present invention and illustrate various objects and features thereof.
DETAILED DESCRIPTION OF THE INVENTIONDetailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely illustrative of the invention that may be embodied in various forms. In addition, each of the examples given in connection with the various embodiments of the invention are intended to be illustrative, and not restrictive. Further, the figures are not necessarily to scale, some features may be exaggerated to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
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Each of the cavities 32, 38, receives a compression spring 44, 46 that is seated against a respective partition 34, 40. Each of the partitions 34, 40 has an opening 48, 50 (each of opening 48, 50 may be cylindrical, square, rectangular, triangular, or any other desired shape).
The ball and socket joint 28 includes a socket member 52 located within the housing 24. The socket member 52 has a projection 54 that extends through the opening 48 and through the center of the spring 44 (projection 54 may have a cross section that is cylindrical, square, rectangular, triangular, or any other desired shape—depending upon the shape of opening 48). The distal portion of the projection 54 is threaded and receives a securing nut 56 that bears against the spring 44 (in another example, rather than using a securing nut threaded to the distal portion of projection 54, an end piece may be crimped, snapped-on or otherwise attached to the distal portion of projection 54 to retain spring 44).
The end of the socket member 52 opposite to the projection 54 is formed as a cavity 58 to receive a ball member 60 (the cavity 58 may have a cylindrical cross section, a square cross-section, a rectangular cross section, a triangular cross section, or any other desired shape). The cavity 58 is defined by four fingers 62, 64, 66, 68 (finger 68 is shown partially cut-away in the view of
One example of the steps which may be carried out to assemble the hinge assembly 22 will now be described. In this example, the socket member 52 is inserted within the cavity 30 in housing 24. It will be noted from
The ball 60 is then inserted into the cavity 58 by forcing the ball 60 axially between the fingers 62, 64, 66, 68 (the ends of one or more of fingers 62, 64, 66, 68 may be angled or chamfered to aid in insertion of ball 60 into cavity 58). The fingers have sufficient flexibility to separate and allow the ball 60 to snap into the cavity 58. The inturned flanges 74 provide an abutment surface against which the ball 60 seats and is retained (in operation, pin 76 may extend through the slots 70 and 72 to allow the ball to pivot with respect to the socket member 52). The housing 26 may then be inserted over the pin 76 and the spring 46 located within the cavity 38 (surrounding the pin 76). The spring is then retained by the securing nut 78.
When assembled, the end face of the socket member 52 bears against the outer face of the partition 40 under the action of the spring 46 (when spring 46 pulls on ball 60 and, indirectly, socket member 52). In order to fold the temple 20 behind the main frame 12, rotation occurs between the ball 60 and the socket member 52. As rotation occurs, the edge of the socket member 52 forms a line of rotation so that the springs 46 and 44 are compressed as the housing 24 is rotated relative to the housing 26. As the housing 24 rotates, the pin 76 passes along the slot 72 to allow the temple 20 to fold behind the main frame 12.
Unfolding the temple 20 from behind the main frame 12 similarly produces a relative pivotal movement between the housing 24 and housing 26 (with the springs 44, 46 providing a bias that acts to hold the temple 20 in the unfolded position). If a force is applied to move the temple 20 further outwardly relative to the main frame 12 (that is, beyond a position in which the temple 20 is generally perpendicular to the main frame 12), a movement similar to that occurring when the temple 20 is folded will occur with the springs 44, 46 yielding to accommodate the further outward movement. The temple 20 is thus not subjected to excessive bending forces and upon removal of the further outwardly directed force, the springs 44, 46 will cause the temple to return to its normal unfolded position (that is, generally perpendicular to the main frame 12).
Further, under normal conditions, the overhang 42 cooperates with the upper side of the socket member 52 to inhibit rotation of the temple 20 about a horizontal axis of the ball joint (that is, the overhang 42 cooperates with the upper side of the socket member 52 to inhibit rotation of the temple 20 up and down relative to the main frame 12). If, however, an abnormal load is applied in a vertical plane, the springs 44, 46 will again yield to permit relative pivoting between the housings 24 and 26 (that is, allow movement of the temple 20 up and down relative to the main frame 12). In this case, the pin 76 passes along the slot 70 to accommodate the displacement (the springs 44, 46 provide a return bias once the up/down loading is removed).
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It will be appreciated, of course, that the pin and projection should be suitably sized to enable the necessary rotation of the overhangs with respect to the housings during rotation of the temple 20.
It will be further appreciated, of course, that various embodiments of the present invention permit the hinge assembly 22 to accommodate abnormal loads applied in a number of directions and the choice of using one or two springs (and the strength of such springs) will depend on the degree of movement that is desired. However, in each case, folding and unfolding of the temples 20 may be permitted while accommodating such abnormal loads.
It will also be seen that the provision of the ball and socket joint 28 according to various embodiments of the present invention permits the hinge assembly 22 to provide the desired range of movement for the temple as well as to accommodate the abnormal loads applied to thereto. At the same time, the provision of the socket member 52 and the flexible fingers 62, 64, 66, 68 facilitates the assembly of the components of various embodiments of the present invention by permitting an essentially straight axial insertion of the ball 60 into the cavity 58.
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In operation, spring 1204 pushes out against pad 1206 to bias pad 1206 against joint member 1208. Depending upon the shape of the surface of joint member 1208 presented to pad 1206, this biasing action may: (a) serve to hold temple 1200 in one or more predefined positions as temple 1200 is pivoted up or down relative to temple region 1216; and/or (b) serve to move temple 1200 to one or more predefined positions as temple 1200 is pivoted up or down relative to temple region 1216.
Similarly, spring 1226 pushes out against pad 1224 to bias pad 1224 against joint member 1208. Depending upon the shape of the surface of joint member 1208 presented to pad 1224, this biasing action may: (a) serve to hold temple 1200 in one or more predefined positions as temple 1200 is pivoted laterally relative to temple region 1216; and/or (b) serve to move temple 1200 to one or more predefined positions as temple 1200 is pivoted laterally relative to temple region 1216 (of note, the orientation of the joint member 1208 may be moved such that each of pivot pins 1210,1218 is essentially orthogonal to the position shown in
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While a number of embodiments of the present invention have been described, it is understood that these embodiments are illustrative only, and not restrictive, and that many modifications may become apparent to those of ordinary skill in the art. For example, the fingers/slots of the socket may define any desired number of predetermined paths to permit rotational and/or pivotal movement between the ball and socket. Further, while various housings have been shown as disposed within the temple, such housings could, in other examples, be disposed adjacent the temple or surrounding the temple. Likewise, while various housings have been shown as attached to the temple region of the main frame, such housings could, in other examples, be disposed within the temple region or surrounding the temple region. Further still, any steps described herein may be carried out in any desired order (and any additional steps may be added as desired and any steps may be deleted as desired).
Claims
1-32. (canceled)
33. A hinge assembly, comprising:
- a joint element comprising first and second essentially orthogonal plate members, wherein the first plate member has an opening extending from one side to the other and wherein the second plate member has an opening extending from one side to the other;
- a first pivot pin; and
- a second pivot pin;
- wherein the first plate member of the joint element is pivotally mounted to an end of a temple of a pair of eyeglasses by the first pivot pin passing through at least one opening in the end of the temple of the pair of eyeglasses and the opening in the first plate member; and
- wherein the second plate member of the joint element is pivotally mounted to a temple region of the main frame of the pair of eyeglasses by the second pivot pin passing through at least one opening in the end of the temple region of the main frame and the opening in the second plate member.
34. The hinge assembly of claim 33, further comprising a spring disposed in a cavity in the end of the temple and a pad disposed in the cavity in the end of the temple between the spring and the first plate member, wherein the spring biases the pad against a surface of the first plate member as the first plate member pivots.
35. The hinge assembly of claim 34, wherein the shape of the surface of the first plate member and the biasing of the pad against the surface of the first plate member holds the temple in at least one of a folded state and an unfolded state.
36. The hinge assembly of claim 35, wherein the shape of the surface of the first plate member against which the pad is biased comprises at least one curved area and at least one essentially flat area.
37. The hinge assembly of claim 33, further comprising a spring disposed in a cavity in the temple region of the main frame and a pad disposed in the cavity in the temple region of the main frame between the spring and the second plate member, wherein the spring biases the pad against a surface of the second plate member as the second plate member pivots.
38. The hinge assembly of claim 37, wherein the shape of the surface of the second plate member and the biasing of the pad against the surface of the second plate member holds the temple in at least one of a folded state and an unfolded state.
39. The hinge assembly of claim 38, wherein the shape of the surface of the second plate member against which the pad is biased comprises at least one curved area and at least one essentially flat area.
40. The hinge assembly of claim 33, wherein the first plate member pivots up and down relative to the end of the temple.
41. The hinge assembly of claim 33, wherein the first plate member pivots laterally relative to the end of the temple.
42. The hinge assembly of claim 33, wherein the second plate member pivots up and down relative to the temple region of the main frame.
43. The hinge assembly of claim 33, wherein the second plate member pivots laterally relative to temple region of the main frame.
44. A pair of hinge assemblies, comprising:
- (a) a first hinge assembly, comprising:
- a joint element comprising first and second essentially orthogonal plate members, wherein the first plate member has an opening extending from one side to the other and wherein the second plate member has an opening extending from one side to the other;
- a first pivot pin; and
- a second pivot pin;
- wherein the first plate member of the joint element is pivotally mounted to an end of a right temple of a pair of eyeglasses by the first pivot pin passing through at least one opening in the end of the right temple of the pair of eyeglasses and the opening in the first plate member; and
- wherein the second plate member of the joint element is pivotally mounted to a right temple region of a main frame of the pair of eyeglasses by the second pivot pin passing through at least one opening in the end of the right temple region of the main frame and the opening in the second plate member; and
- (b) a second hinge assembly, comprising:
- a joint element comprising first and second essentially orthogonal plate members, wherein the first plate member has an opening extending from one side to the other and wherein the second plate member has an opening extending from one side to the other;
- a first pivot pin; and
- a second pivot pin;
- wherein the first plate member of the joint element is pivotally mounted to an end of a left temple of the pair of eyeglasses by the first pivot pin passing through at least one opening in the end of the left temple of the pair of eyeglasses and the opening in the first plate member; and
- wherein the second plate member of the joint element is pivotally mounted to a left temple region of the main frame of the pair of eyeglasses by the second pivot pin passing through at least one opening in the left temple region of the main frame and the opening in the second plate member.
Type: Application
Filed: Dec 28, 2009
Publication Date: Apr 22, 2010
Inventor: Nonu Ifergan (Mount Royal)
Application Number: 12/648,070
International Classification: G02C 5/22 (20060101); G02C 5/14 (20060101);