JP3195749U - Glasses hinge device and annular holding member used therefor - Google Patents

Abstract

An object of the present invention is to provide a hinge device for spectacles and an annular holding member used therefor, which can maintain the temple open / close resistance substantially constant without requiring troublesome adjustment work. A hinge member 12 is elastically held between first and second linear portions 10 and 11 of a U-shaped spring piece 9 constituting an armor 6. The hinge member 12 includes a first hinge piece 15 having a first holding plate 13, a second hinge piece 17 having a second holding plate 16, and the first and second holding plates. And an intermediate hinge piece 19 interposed in a surface contact state. A coil spring 52 is accommodated in an accommodation hole 51 provided in the first hinge piece 15, and the coil spring 52 is in an elastically compressed state. Is done. Thereby, the opening / closing resistance of the temple 7 is maintained substantially constant. [Selection] Figure 2

Description

  The present invention relates to a hinge device for spectacles, and more particularly, it is troublesome that a necessary tightening adjustment of the hinge screw has to be performed many times as in a conventional hinge device using a hinge screw as a pivot. The present invention relates to a hinge device for eyeglasses that can maintain the temple open / close resistance substantially constant without any adjustment work, and also relates to an annular holding member used for constituting the hinge device.

  A hinge device for spectacles, in which a temple is connected to an armor provided on the outer side of the lens part of the spectacles, and the temple can be expanded and folded with respect to the lens part, usually, the rear end of the armor and the temple The hinge pieces respectively brazed to the front ends are engaged with each other, and the hinge screws are tightened as necessary using the hinge screws as pivots, whereby the temple can be opened and closed. The adjustment of the tightening of the hinge screw has been adjusted so that the temple open / close resistance (so-called postcard) is kept constant.

  However, in the hinge device having such a configuration, as the number of times the temple is opened and closed increases, the hinge screw is loosened and the temple is opened and closed. Therefore, it was indispensable to adjust the tightening of the hinge screw each time. However, if the hinge screw is tightened strongly, the temple open / close resistance increases and the temple opens and closes heavy. On the other hand, if the tightening is weak, the hinge screw will loosen easily, and the adjustment work Was very troublesome. In addition, this kind of hinge screw was very small and was forced to make fine adjustments. In addition, there is an inconvenience that the adjustment work must be performed many times.

  Therefore, the present applicant has proposed an elastic holding type hinge device as shown in FIG. The hinge device a is configured such that a gripping portion c having a folded portion b provided at the front portion of the temple b elastically grips a pivot e provided at the armor d. As a result, the holding portion c is in a state of elastically holding the pivot e, whereby the temple b can be opened and closed with a constant opening / closing resistance.

  However, even when such a hinge device a is used, the elastic holding state of the pivot shaft e by the holding portion c formed by folding is properly exhibited at first, but the elasticity gradually deteriorates over time. As a result, the opening and closing of the temple b tends to be sweet, and there is a problem in the durability of the opening and closing resistance of the temple.

JP 2001-249308 A

  In view of the above-mentioned problems in the conventional hinge device having a hinge screw as a pivot, the present invention can maintain the temple opening and closing resistance substantially constant over a long period of time without being bothered by the looseness of the hinge screw. An object of the present invention is to provide a hinge device for spectacles that can be used.

In order to solve the above problems, the present invention employs the following means.
That is, the eyeglass hinge device (also referred to as a hinge device) according to the present invention is an eyeglass hinge device for pivotally mounting a temple on an outer side of the eyeglass lens portion so that the temple can be opened and closed. , Comprising a U-shaped spring piece bent in a U-shape, and a hinge member between the first linear portion and the second linear portion of the U-shaped spring piece that are vertically opposed and parallel to each other Are hinged elastically, and the hinge member includes a first hinge piece including a first holding plate, a second hinge piece including a second holding plate, and the first and second hinge members. An intermediate hinge piece interposed between the holding plates in a surface contact state is provided, and the intermediate hinge piece is provided at the front end of the temple. In the first hinge piece, a fitting groove for fitting the first linear portion is provided on the outer surface of the first holding plate, and a pivot is provided on the inner surface of the first holding plate. The second hinge piece is provided with a fitting groove for fitting the second linear portion on the outer surface of the second holding plate, and on the inner surface thereof, on the front side of the pivot. A recess for fitting the portion is provided, and the intermediate hinge piece is provided with a pivot attachment hole through which the pivot shaft can be closely inserted, and is rotatable about the axis of the pivot shaft. The first hinge piece is provided with a bottomed receiving hole that opens at the bottom of the fitting groove and extends in the length direction of the pivot, and a coil spring is received in the receiving hole. At the same time, when the coil spring is in a free state, one end of the coil spring is supported by the bottom of the receiving hole, while the other end portion projects from the open end of the receiving hole. And the other end of the coil spring are pressed toward the bottom by the first linear portion in a state where the portion and the second linear portion are fitted in the corresponding fitting grooves, respectively. The coil spring is in an elastically compressed state, and in this state, the pivot peripheral portion of the inner surface of the first hinge piece is placed on one surface of the intermediate hinge piece and the biasing force of the coil spring and the U-shaped spring. Elastically pressed by receiving the biasing force of the piece On the other hand, the concave peripheral portion of the inner surface of the second hinge piece is elastically pressed against the other surface of the intermediate hinge piece under the urging force of the U-shaped spring piece. To do.

  Further, another aspect of the hinge device for spectacles according to the present invention is a hinge device for spectacles for pivotally attaching a temple to an armor provided on the outer side of the lens portion of the spectacles so that the temple can be opened and closed. A U-shaped spring piece bent in a U-shape is provided at the front side portion thereof, and a first linear portion and a second linear portion of the U-shaped spring piece which are vertically opposed to each other and present a parallel state, A hinge member elastically held between the first hinge piece comprising a first holding plate, a second hinge piece comprising a second holding plate, An intermediate hinge piece interposed between the first and second holding plates in a surface contact state is provided, and the intermediate hinge piece is provided at the rear end of the armor. In the first hinge piece, a fitting groove for fitting the first linear portion is provided on the outer surface of the first holding plate, and a pivot is provided on the inner surface of the first holding plate. The second hinge piece is provided with a fitting groove for fitting the second linear portion on the outer surface of the second holding plate, and on the inner surface thereof, on the front side of the pivot. A recess for fitting the portion is provided, and the intermediate hinge piece is provided with a pivot attachment hole through which the pivot shaft can be closely inserted, and is rotatable about the axis of the pivot shaft. The first hinge piece is provided with a bottomed receiving hole that opens at the bottom of the fitting groove and extends in the length direction of the pivot, and a coil spring is received in the receiving hole. At the same time, when the coil spring is in a free state, one end of the coil spring is supported by the bottom of the receiving hole, while the other end portion projects from the open end of the receiving hole. And the other end of the coil spring are pressed toward the bottom by the first linear portion in a state where the portion and the second linear portion are fitted in the corresponding fitting grooves, respectively. The coil spring is in an elastically compressed state, and in this state, the pivot peripheral portion of the inner surface of the first hinge piece is placed on one surface of the intermediate hinge piece and the biasing force of the coil spring and the U-shaped spring. Elastically pressed by receiving the biasing force of the piece On the other hand, the concave peripheral portion of the inner surface of the second hinge piece is elastically pressed against the other surface of the intermediate hinge piece under the urging force of the U-shaped spring piece. To do.

  In the hinge device for each of the glasses described above, the first linear portion is provided with an engagement recess for fitting the tip portion of the other end portion of the coil spring, and the second linear portion is provided with the It is preferable to provide a second engaging portion that can be engaged with the first engaging portion provided at the bottom of the fitting groove.

  In these eyeglass hinge devices, the fitting grooves provided in each of the first and second holding plates in a state where the intermediate hinge piece is interposed between the first and second holding plates are parallel to each other. It is preferable that a first positioning engagement portion that can engage with a second positioning engagement portion provided on the inner peripheral surface of the recess is provided on the front side portion of the pivot so as to exhibit a state.

  In these eyeglass hinge devices, the first sandwiching plate, the second sandwiching plate, and the intermediate hinge piece have a disk shape with the same diameter, and the pivot is formed of the first sandwiching plate. The fitting groove provided at the center of the inner surface and provided on the outer surface of the first clamping plate is provided so as to pass through the center of the outer surface, and is formed on the outer surface of the second clamping plate. The fitting groove to be provided is preferably provided so as to pass through the central portion of the outer surface.

  According to the present invention, the annular holding member for constituting the hinge device for spectacles is configured such that the tip of the first straight portion and the tip of the second straight portion of the U-shaped spring piece are connected by a connecting piece. It is characterized by being.

  According to another aspect of the present invention, an annular holding member for constituting a hinge device for spectacles is provided with a first extension projecting from the tip of the first linear portion of the U-shaped spring piece. A second extension portion projects from the tip of the second linear portion, and the first extension portion and the tip end of the second extension portion are connected by a connecting piece. It is what.

  According to the present invention, a hinge member is elastically held between first and second linear portions of a U-shaped spring piece that constitutes an armor or a temple and that are opposed to each other and that are parallel to each other. Is interposed in a surface contact state between a first hinge piece having a first holding plate, a second hinge piece having a second holding plate, and the first and second holding plates. It has an intermediate hinge piece. The first and second holding plates have fitting grooves for fitting the first and second linear portions on the outer surfaces thereof, and the pivots protruding from the inner surfaces of the first holding plates are The pivot hole provided in the intermediate hinge piece is inserted, and the front side portion thereof is fitted into a recess provided in the inner surface of the second holding plate. The first hinge piece is provided with a bottomed receiving hole that opens at the bottom of the fitting groove and extends in the longitudinal direction of the pivot, and the receiving hole receives a coil spring, and the coil spring is The first linear portion is fitted into the fitting groove to be in an elastic compression state, and in this state, the pivot peripheral portion of the first holding plate is elastically pressed against one surface of the intermediate hinge piece. It is done like that.

As a result, the present invention has the following excellent effects.
(1) A hinge device for spectacles according to the present invention is a conventional hinge device having a hinge screw as a pivot by the elastic holding of the hinge member by the U-shaped spring piece and the biasing force of the built-in coil spring. In relation to the hinge screw, there is no need for troublesome adjustment work of the hinge screw, and in relation to the hinge device that elastically holds the pivot, the opening and closing resistance of the temple is not caused by the elastic deterioration of the temple. Can be maintained substantially constant over a long period of time.

(2) Since the hinge device according to the present invention is provided with fitting grooves for fitting the first and second linear portions in the first and second hinge pieces, the first and second hinge pieces are provided. If the hinge member is pushed toward the base side of the U-shaped spring piece and the linear member is inserted into the corresponding fitting groove, the hinge member is required for the U-shaped spring piece. The hinge device can be easily assembled.

(3) An engagement recess for fitting a tip portion of the coil spring is provided in the first linear portion constituting the U-shaped spring piece, or provided on the hinge member in the second linear portion. If the second engaging portion that can be concavo-convexly fitted with the first engaging portion is provided, or both of them are provided, the pushing amount of the hinge member against the U-shaped spring piece is easily understood, By the concave / convex fitting of the first and second engaging portions, the hinge member can be more stably attached to the U-shaped spring piece, and the hinge member may be detached from the U-shaped spring piece. Can be reliably prevented.

(4) When the hinge member is configured, the pivot shaft protruding from the first hinge piece is inserted into the pivot attachment hole provided in the intermediate hinge piece, and the front side portion of the pivot shaft is inserted into the second hinge piece. When the first positioning engagement portion and the second positioning engagement portion are engaged with each other at the time when the first positioning engagement portion and the second positioning engagement portion are engaged with each other, The fitting groove provided in each of the first and second holding plates in a state where the intermediate hinge piece is interposed can be made parallel.

  Accordingly, when the first and second linear portions are fitted in the corresponding fitting grooves and the hinge member is pushed toward the base side of the U-shaped spring piece, the hinge member is moved to the U-shaped spring. The work of attaching to the piece can be performed efficiently.

(5) For example, when the U-shaped spring piece is configured as a part of an annular holding member formed by punching a plate made of a metal material, a barrel polishing process is applied to the annular holding member for deburring. In this polishing process, it is possible to reliably prevent the U-shaped spring piece from expanding or contracting. This is because the annular holding member has an annular shape, and its shape is difficult to change.

  In particular, a first extension is projected from the tip of the first linear portion of the U-shaped spring piece, and a second extension is projected from the tip of the second linear portion, In the case of adopting a configuration in which the distal ends of the first and second extension portions are connected by a connecting piece, the first and second extension portions are appropriately bent after the connecting piece is cut off, so that this bending is achieved. The design of the spectacle side can be changed by deformation.

It is a perspective view which shows the hinge apparatus which concerns on this invention. FIG. It is a perspective view which decomposes | disassembles and shows a hinge member. It is a perspective view which decomposes | disassembles and shows a hinge member. It is sectional drawing which shows the state by which the front side part of the pivot of the 1st hinge piece was inserted by the recessed part of the 2nd hinge piece. It is a perspective view which shows a hinge member. It is a top view which shows the open / close state of a temple. It is sectional drawing which shows the state which accommodated the coil spring in the accommodation hole of this 1st hinge piece, and the 1st hinge piece. It is sectional drawing explaining the problem of the hinge apparatus which concerns on a comparative example. It is a perspective view which shows an annular holding member. It is sectional drawing which shows the state which clamped the intermediate hinge piece between the 1st, 2nd hinge pieces, and sectional drawing which shows the hinge member comprised by accommodating the coil spring in the accommodation hole of the 1st hinge piece. . It is sectional drawing which shows the process of mounting | wearing a U-shaped spring piece with a hinge member, and sectional drawing which shows the state which mounted | worn this hinge member to the U-shaped spring piece. It is sectional drawing which shows the other aspect of the uneven | corrugated fitting of the 1st, 2nd engaging member in the state which mounted | wore the hinge member to the U-shaped spring piece. It is sectional drawing which shows the other aspect of the uneven | corrugated fitting of the 1st, 2nd engaging member in the state which mounted | wore the hinge member to the U-shaped spring piece. It is a perspective view which shows the other aspect of a U-shaped spring piece. It is the perspective view which shows the temple by which a U-shaped spring piece is provided in the front side part, and the perspective view which shows the hinge apparatus comprised using this. FIG. 4 is a perspective view showing an armor having a U-shaped spring piece that opens rearward, a hinge device configured using the same, and a cross-sectional view for explaining the restricting action of the temple in the hinge device. . It is a perspective view which shows the hinge apparatus by which the open end of the U-shape of the U-shaped spring piece which an armor is provided opens frontward, and only a 2nd extension part is brazed to the outer side part of the said lens part. . It is a perspective view which shows the temple which comprises the U-shaped spring piece which a front-end | tip part opens toward back, and a hinge apparatus comprised using this. It is explanatory drawing explaining the problem of the elastic holding of the pivot by the holding part formed by folding.

  1-4, the hinge device 1 for spectacles according to the present invention is used for pivotally attaching a temple 7 to an armor 6 provided on the outer side 5 of the lens part 3 of the spectacles 2 so as to be openable and closable. The armor 6 includes a U-shaped spring piece 9 bent in a U-shape. The U-shaped spring piece 9 has a first linear portion 10 and a second linear shape that are opposed to each other and are parallel to each other. A hinge member 12 is elastically held between the portions 11.

  In this embodiment, the hinge member 12 has a columnar shape with a diameter of about 5 mm and a thickness of about 4.16 mm, and has a disk shape with a diameter of about 5 mm and a thickness of about 1.70 mm. A first hinge piece 15 having a first holding plate 13 and a second hinge piece 17 having a second holding plate 16 having a disk shape with a diameter of about 5 mm and a thickness of about 1.70 mm. And a disc-like shape having a diameter of about 5 mm and a thickness of about 0.76 mm, which is interposed between the first and second holding plates 13 and 16 in a surface contact state, and a circular pivot at the center. An intermediate hinge piece 19 provided with a hole 18 is provided. In this embodiment, the intermediate hinge piece 19 is integrally provided at the front end of the temple 7 as shown in FIG.

  As shown in FIGS. 2 to 4, the first hinge piece 15 has a linear shape for fitting the first linear portion 10 into the outer surface 20 of the first holding plate 13 having a disk shape. A fitting groove 21 is provided so as to pass through the central portion of the outer surface 20, and a columnar pivot 23 projects from the central portion of the inner surface 22 of the first holding plate 13. The diameter of the pivot 23 is set to about 3 mm. And the base side part 25 which exists in the said inner surface 22 side of this pivot 23 is comprised by the column shape, and, as shown in FIG. 2, this cylindrical side part 25 has the circular shape of the said intermediate hinge piece 19. As shown in FIG. A close insertion state is established in the pivot attachment hole 18. Further, as shown in FIG. 3, the front side portion 26 of the pivot shaft 23 is formed with first positioning engagement portions 27, 27 having flat surfaces 27a, 27a on the opposite side.

  As shown in FIGS. 2 to 4, the second hinge piece 17 has a linear shape for fitting the second linear portion 11 into the outer surface 29 of the second holding plate 16 having a disk shape. A fitting groove 30 is provided so as to pass through the central portion of the outer surface 29, and a concave portion 32 for fitting the front side portion 26 of the pivot shaft 23 into the central portion of the inner surface 31 of the second holding plate 16. Is provided. On the inner peripheral surface 33 of the recess 32, there are provided second positioning engaging portions 35, 35 comprising flat surfaces 35a, 35a that can come into contact with the flat surfaces 27a, 27a.

  Then, as shown in FIG. 5, the front side of the pivot 23 so that the flat surfaces 27a, 27a of the pivot 23 inserted through the pivot hole 18 and the flat surfaces 35a, 35a on the concave portion 32 side are brought into contact with each other. By fitting the portion 26 into the recess 32, as shown in FIGS. 2 and 6, the linear fitting groove 21 provided on the outer surface 20 of the first holding plate 13 and the second fitting groove 21 are provided. The linear fitting groove 30 provided on the outer surface 29 of the holding plate 16 is arranged in parallel. As shown in FIG. 2, a slight gap 39 is formed between the distal end surface 36 of the pivot 23 and the bottom surface 37 of the recess 32 in a state where the front side portion 26 of the pivot 23 is fitted in the recess 32. It is designed to be formed.

  As shown in FIGS. 2 to 3 and FIG. 6, the intermediate hinge piece 19 has the first and second clamping plates in a state where the base portion 25 of the pivot 23 is closely inserted into the pivot hole 18. 13 and 16 are held. Then, the peripheral portion (the peripheral portion of the pivot) 40 (FIGS. 2 to 3) of the inner shaft 22 of the first holding plate 13 is one surface 41 (FIGS. 2 and 4) of the intermediate hinge piece 19. And the peripheral portion (recess peripheral portion) 42 (FIGS. 2 and 4) of the second holding plate 16 is in contact with the other surface 43 of the intermediate hinge piece 19. In contact. The intermediate hinge piece 19 is thus interposed in a surface contact state between the first and second holding plates 13 and 16, and the intermediate hinge piece 19 can be rotated around the axis of the pivot 23. Therefore, the temple 7 can be opened and closed as shown in FIG.

  In the present embodiment, as shown in FIGS. 2 to 3, the first engaging portion 46 is provided at the center portion in the length direction of the bottom portion 45 of the fitting groove 21 that exhibits the linear shape of the second holding plate 16. Is provided. Then, as shown in FIG. 2, the first engagement portion 46 can be engaged with the second engagement portion 50 provided on the inner surface 49 of the second linear portion 11 in an uneven manner.

  In the present embodiment, the first engaging portion 46 is formed as an engaging hole portion 46 a provided in a state of breaking the bottom portion 45 of the fitting groove 21 and communicating with the concave portion 32. As shown in FIG. 2, the engaging hole 46a has an engaging protrusion (for example, having a protruding amount of about 0.1 mm) protruding from the inner surface 49 of the second linear portion 11. ) The second engaging portion 50 (FIGS. 2 and 10) as 50a is fitted.

  As shown in FIG. 8A, the pivot 23 is provided with a bottomed receiving hole 51 extending in the axial direction. 8B, a coil spring 52 is accommodated in the accommodation hole 51. When the coil spring 52 is in a free state, one end 53 of the coil spring 52 is supported by the bottom 55 of the accommodation hole 51. On the other hand, the other end portion 56 protrudes from the open end 57 of the accommodation hole 51. In this embodiment, the inner diameter of the accommodation hole 51 is set to about 1.48 mm, for example, and the outer diameter of the coil spring 52 is set to about 1.38 mm, for example.

  In the state where the first linear portion 10 and the second linear portion 11 are fitted in the corresponding fitting grooves 21 and 30, as shown in FIG. The end 59 is pressed toward the bottom portion 55, and the coil spring 52 exhibits an elastic compression state. In this embodiment, there is an engagement recess portion 61 (for example, having a depth of about 0.1 mm) 61 (FIGS. 2 and 10) for fitting the distal end portion 60 of the other end side portion 56 of the coil spring 52. It is provided on the inner side surface 62 of the first linear portion 10.

  In this state, as shown in FIG. 2, the pivot peripheral portion 40 of the first hinge piece 15 is applied to one surface 41 of the intermediate hinge piece 19 with the biasing force of the coil spring 52 and the U-shaped spring piece. 9 is simultaneously pressed and elastically pressed, while the peripheral portion 42 of the recess of the second hinge piece 17 is placed on the other surface 43 of the intermediate hinge piece 19 of the U-shaped spring piece 9. It is elastically pressed by receiving an urging force. Therefore, the temple 7 can be opened and closed smoothly by receiving a substantially constant opening and closing resistance by the frictional action caused by the urging force, and this can be sustained.

  The persistence of the switching resistance will be described in more detail in relation to the comparative example shown in FIG. The hinge device 1a as a comparative example has a configuration in which the coil spring 52 is omitted from the hinge device 1 according to the embodiment. When the hinge device 1a is used, the intermediate hinge piece 19 is interposed between the first holding plate 13 and the second holding plate 16 in a surface contact state by the elastic holding force of the U-shaped spring piece 9. In response to the biasing force of the U-shaped spring piece 9, the pivot peripheral portion 40 of the first holding plate 13 is elastically pressed against one surface 41 of the intermediate hinge piece 19, and The concave peripheral portion 42 of the second holding plate 16 is elastically pressed against the other surface 43 of the intermediate hinge piece 19.

  When the hinge device 1a is used, the temple 7 receives a substantially constant opening / closing resistance while the elastic pressure contact action of the first and second holding plates 13 and 16 with respect to the intermediate hinge piece 19 is effectively exerted. Can be opened and closed smoothly. However, it is inevitable that the urging force of the U-shaped spring piece 9 gradually deteriorates. As a result, the urging force that was initially sufficient is lowered, and the opening / closing resistance of the temple 7 is reduced. From this, it can be seen that the opening / closing resistance of the temple 7 cannot be maintained substantially constant only by the elastic clamping action of the U-shaped spring piece 9.

  On the other hand, when the hinge device 1 according to this embodiment is used, as shown in FIG. 2, the biasing force of the coil spring 52 is applied in addition to the biasing force of the U-shaped spring piece 9. Even if the elastic holding action of the letter-shaped spring piece 9 is deteriorated, the pivot peripheral portion 40 of the first holding plate 13 elastically moves one surface 41 of the intermediate hinge piece 19 by the biasing force of the coil spring 52. In pressure contact. Accordingly, the opening / closing resistance of the temple 7 is maintained substantially constant thereafter.

  Even if the contact surface between the intermediate hinge piece 19 and the first and second holding plates 13 and 16 is worn during the use of glasses for many years, the biasing force of the coil spring 52 Since the pivot peripheral portion 40 of the first holding plate 13 is always elastically pressed against the one surface 41 of the intermediate hinge piece 19, the opening / closing resistance of the temple 7 is maintained over a long period of time. It can be maintained substantially constant.

  Here, the assembly procedure of the hinge apparatus 1 according to the embodiment will be described. FIG. 10 shows an annular holding member 63 having a U-shaped spring piece 9 formed by punching a plate made of a metal material (for example, beta-titanium) having elasticity and excellent strength. The annular holding member 63 has a first extension 66 protruding from a tip 65 of the first linear portion 10 of the U-shaped spring piece 9 bent in a U-shape, and the second straight line. A second extension portion 69 is projected from the tip 67 of the shape portion 11. In the present embodiment, the first extension portion 66 is configured as a curved extension portion 66a that is curved in an arc shape toward the front side and outward, and the second extension portion 69 is provided on the front side. The connecting piece is configured as a linear extending portion 69a that extends linearly outward and outward, and the distal end 70 of the curved extending portion 66 and the distal end 71 of the linear extending portion 69 are, for example, L-shaped. 72 are connected together.

  Since the annular holding member 63 is formed by punching a plate material made of a metal material, deburring is necessary. Therefore, for this deburring, the annular holding member 63 is subjected to barrel polishing, and the annular holding member 63 has a tip 70 of the curved extension 66a and a tip 71 of the linear extension 69a. For example, since the L-shaped connecting piece 72 is integrally connected to form an annular shape as a whole, an interval L between the first and second linear portions 10 and 11 of the U-shaped spring piece 9 is set. The fear of expanding or contracting can be surely prevented. The interval L is an important factor for determining the magnitude of the urging force of the U-shaped spring piece 9, but the connecting piece 72 keeps the interval L constant during the barrel polishing process.

  When the hinge member 12 is attached to the U-shaped spring piece 9 of the annular armor constituting member 63 having such a configuration, the pivot shaft 23 of the first hinge piece 15 is mounted as shown in FIG. Is inserted into the pivot hole 18 of the intermediate hinge piece 19 and the front portion 60 of the pivot 23 is fitted into the recess 32 of the second hinge piece 17. In this fitting, as shown in FIG. 5, the flat surfaces 27a and 27a of the pivot 23 are positioned so as to contact the flat surfaces 35a and 35a of the recess 32, as shown in FIGS. Moreover, the fitting grooves 21 and 30 provided in the first and second hinge pieces 15 and 17 are in a parallel state. When the coil spring 52 is accommodated in the accommodation hole 51 and one end 53 thereof is supported by the bottom 55 of the accommodation hole 51, the coil spring 52 is in a free state as shown in FIG. The other end portion 56 of the housing is in a protruding state from the open end 57 of the receiving hole 51. For example, it protrudes about 0.3 mm.

  Thereafter, the cylindrical body (the hinge member 12) 73 assembled in this way is interposed between the first and second linear portions 10 and 11 while elastically expanding. 12A, the first and second linear portions 10 and 11 and the fitting grooves 21 and 30 are aligned, and the hinge member 12 is moved to the U-shaped spring piece 9. Push toward the base side 75 of the. Accordingly, as shown in FIG. 12B, the fitting groove in which the first linear portion 10 is provided in the first holding plate 13 by the urging force of the U-shaped spring piece 9 is provided. 21 and the second linear portion 11 is elastically fitted in the fitting groove 30 provided in the second clamping plate 16. Become. The engaging protrusion 50a provided on the inner surface 49 of the second linear portion 11 fits into the engaging hole 46a and the distal end portion of the other end portion 56 of the coil spring 52. 60 fits into the engagement recess 61, and the pushing of the cylindrical hinge member 12 into the U-shaped spring piece 9 is completed. In this way, when the hinge member 12 is pushed in, the engagement protrusion 50a and the engagement recess 61 serve to regulate the push-in amount of the hinge member 12.

  Since the engagement protrusion 50a and the engagement hole 46a are fitted together, and the tip portion 60 of the coil spring 52 is fitted in the engagement recess 61. The hinge member 12 does not move in the length direction of the U-shaped spring piece 9 due to the retaining action by the fitting. Therefore, there is no fear that the hinge member 12 is detached from the U-shaped spring piece 9. The tip portion 60 fits into the engagement recess 61 so that the coil spring 52 can be prevented from wobbling even if the diameter of the accommodation hole 51 is relatively large.

  In this state, as shown in FIGS. 2 and 12B, the other end 59 of the coil spring 52 is pressed toward the bottom portion 55 by the first linear portion 10, and the coil spring 52 is elastically compressed. Presents. In this state, as shown in FIG. 2, the pivot peripheral portion 40 of the first hinge piece 15 is applied to the one surface 41 of the intermediate hinge piece 19 and the biasing force of the U-shaped spring piece 9 and the The urging force of the coil spring 52 is simultaneously received and elastically pressed.

  After the hinge member 12 is mounted on the U-shaped spring piece 9 in this way, the connecting piece 72 is cut off. Thereafter, as shown in FIG. 1, the curved extension portion 66a and the linear extension portion 69a are appropriately bent so that both front side portions 76 and 77 are formed on the outer portion 5 of the lens portion 3 (in this embodiment, The eyeglasses 2 are configured by brazing to the outer portion of the rim piece 80 attached to the upper portion of the lens 79. The brazing position of the tip portions 76 and 77 with respect to the outer portion 5 is such that the distance L between the first and second linear portions 10 and 11 of the U-shaped spring piece 9 is the connecting piece 72. It is set so as to be approximately the level before cutting off. When the front portions 76 and 77 are brazed to the rim piece 80 in this way, the expansion of the U-shaped spring piece 9 is restricted by the outer portion 5, so that the U-shaped spring piece 9 The urging force is stably maintained. In the glasses 2, as shown in FIG. 7A, the open state of the temple 7 is restricted by contacting the base side 75 of the U-shaped spring piece 9.

  When the temple 7 is opened and closed, since the first and second linear portions 10 and 11 are fitted in the fitting grooves 21 and 30, the first and second hinge pieces 15 , 17 are prevented from rotating, and the intermediate hinge piece 19 is smoothly rotated. When the temple 7 is opened and closed with this rotation, the biasing force of the coil spring 52 and the biasing force of the U-shaped spring piece 9 act on one surface 41 of the intermediate hinge piece 19 and the U-shaped spring piece. Nine biasing forces act on the other surface 43 of the intermediate hinge piece 19, and the frictional force resulting from these biasing forces keeps the required opening / closing resistance substantially constant over a long period of time. It will be.

  In the present embodiment, since the first hinge piece 15 having the pivot 23 is disposed below the U-shaped spring piece 10, as shown in FIG. The end 57 is in the downward state. Therefore, the open end 57 (FIG. 4) cannot be completely blocked by the first linear portion 10 in a state where the first linear portion 10 is fitted in the fitting groove 21. However, since the open end 57 faces downward, it is difficult for dust to enter the interior of the receiving hole 51, and as shown in FIG. Absent.

  The present invention is by no means limited to that shown in the above-described embodiments, and various design changes can be made within the description of “Scope of utility model registration”. One example is as follows.

(1) In the first embodiment, the first hinge piece 15 having the pivot 23 is positioned on the lower side, and the second hinge piece 17 having the recess 32 is positioned on the upper side. May be reversed.

(2) In the first embodiment, the engagement recess 61 is provided in the first linear portion 10 and the engagement protrusion 50a is provided in the second linear portion 11, but the hinge member If the hinge member 12 that is elastically held between the first and second linear portions 10 and 11 can be prevented from coming off, the assembling workability of the twelve 12 is not so hindered. The engagement protrusion 50a may not be provided. Even if provided, only one of them may be provided.

(3) The first engaging portion 46 provided at the bottom 45 of the fitting groove 21 of the second holding plate 16 is configured as the above-described hole portion, and is provided with the bottom 45 recessed. It may be configured as a provided engaging recess. Alternatively, as shown in FIG. 13, the first engaging portion 46 is configured as an engaging protrusion 46 b provided on the bottom 45, and the inner side surface 49 of the second linear portion 10 It is good also as a structure which provides the engaging recessed part 50b as the said 2nd engaging part 50 which can carry out uneven | corrugated fitting with the engaging protrusion 46b.

(4) The first positioning engagement portion 27 provided on the pivot 23 is configured as the above-described flat surfaces 27a and 27a, as well as an engagement recess or engagement provided on the inner peripheral surface 33 of the recess 32. It may be configured by an engagement protrusion or an engagement recess that is fitted to the second positioning engagement portion 35 as a combined protrusion. The first positioning engagement portion 27 (for example, the flat surface 27a) may be provided only on one side (one side) instead of on both sides of the front side portion of the pivot 23.

(5) Instead of the engagement recess 61 provided on the inner surface of the first linear portion 10 and the engagement protrusion 50a provided on the inner surface of the second linear portion 11, for example, As shown in FIG. 14, the hinge member 12 may be configured as protrusions 82, 82, 82, 82 that sandwich the first and second linear portions 10, 11 on both sides in the length direction.

(6) The armor 6 may be configured with the annular holding member 63 itself without separating the connecting piece 72.

(7) If the annular holding member 63 has the U-shaped spring piece 9 and a space for mounting the hinge member 12 is secured on the open end side of the U-shaped spring piece, Various annular forms can be set. The end portions of the first and second linear portions 10 and 11 may be connected by the connecting piece 72. In particular, as shown in FIG. 10, for example, when the distal ends 70, 71 of the first and second extension portions 66, 69 are connected by a connecting piece 72, the first piece after the connecting piece 72 is cut off. By appropriately bending the second extension portions 66 and 69, the design of the spectacle side portion can be changed by this bending deformation.

(8) As shown in FIG. 15, the hinge member 12 can also be attached to the U-shaped spring piece 9 itself with the tip 83 open.

(9) The first hinge piece 15, the second hinge piece 17, and the intermediate hinge piece 19 constituting the hinge member 12 can be variously configured in consideration of the design of the glasses, and the size of each part is set as required. The

(10) The U-shaped spring piece 9 may be configured at the front portion of the temple 7 as shown in FIG.

(11) When the armor 6 includes the U-shaped spring piece 9, as shown in FIGS. 17A and 17B, the U-shaped open end 85 of the U-shaped spring piece 9 is rearward ( The alloy 6 may be provided on the outer portion 5 of the lens portion 3 so as to open toward the direction in which the temple 7 extends. As shown in FIG. 17C, the temple 86 has its distal end portion 86 in contact with the U-shaped base portion 87 of the U-shaped spring piece 9, and its open state is restricted.

(12) FIG. 18 shows another embodiment in which the armor 6 is provided on the outer side 5 of the lens unit 3 when the armor 6 includes the U-shaped spring piece 9. Only the extension portion 69 is brazed to the outer side portion 5, and the second extension portion 69 is not brazed to the outer side portion 5. Only the second extension 69 may be brazed to the outer portion 5.

  In the case where the temple 7 includes the U-shaped spring piece 9, as shown in FIG. 19, one of the first and second extension portions 66 and 69 (for example, the second extension portion 69) is connected. The front end 90 of the temple body 89 may be provided continuously.

(13) The intermediate hinge piece 19 and the armor 6 or the temple 7 may be provided integrally, or the intermediate hinge piece 19 and the armor 6 or the intermediate hinge piece 19 and the temple 7 are separated. It is good also as making a body and connecting the armor 6 or the temple 7 to this intermediate | middle hinge piece 19 by post-processing.

(14) The bottom portion 55 of the receiving hole 51 may be anything that can receive the one end 53 of the coil spring 52, and an opening may be provided at the center of the bottom portion 55 or the like.

(15) In the present invention, in addition to the above, the lens unit 3 may be formed by holding the lens with a rim, or may be the lens itself.

DESCRIPTION OF SYMBOLS 1 Hinge apparatus 2 Glasses 3 Lens part 5 Outer part 6 Yoroloy 7 Temple 9 U-shaped spring piece 10 1st linear part 11 2nd linear part 12 Hinge member 13 1st support plate 15 1st hinge piece 16 Second holding plate 17 Second hinge piece 18 Pivoting hole 19 Intermediate hinge piece 20 Outer surface 21 Fitting groove 22 Inner surface 23 Pivot 25 Base side portion 26 Front side portion 27 First positioning engagement portion 29 Outer surface 30 Fitting Groove 31 Inner surface 33 Inner peripheral surface 35 Second positioning engagement portion 36 Front end surface 37 Bottom surface 39 Gap 40 Axis peripheral portion 41 One surface 42 Recess peripheral portion 43 Other surface 45 Bottom portion 46 First engagement portion 49 In Side surface 50 Second engaging portion 51 Accommodating hole 52 Coil spring 53 One end 55 Bottom portion 56 Other end side portion 57 Open end 60 Tip portion 61 Engaging recess portion 63 Eloy component member 72 Connection piece

Claims (7)

A hinge device for eyeglasses for pivotally attaching a temple to an armor provided on the outer side of the lens part of the eyeglasses so that the temple can be opened and closed,
The armor has a U-shaped spring piece bent in a U-shape, and the U-shaped spring piece is disposed between a first linear portion and a second linear portion that are vertically opposed and parallel to each other. The hinge member is held elastically,
The hinge member is in surface contact between the first hinge piece including the first holding plate, the second hinge piece including the second holding plate, and the first and second holding plates. An intermediate hinge piece interposed, and the intermediate hinge piece is provided at the front end of the temple;
In the first hinge piece, a fitting groove for fitting the first linear portion is provided on the outer surface of the first holding plate, and a pivot is provided on the inner surface of the first holding plate. And
The second hinge piece is provided with a fitting groove for fitting the second linear portion on the outer surface of the second holding plate, and on the inner surface, the front side portion of the pivot is fitted. There is a recess for entering,
The intermediate hinge piece is provided with a pivot attachment hole through which the pivot shaft can be closely inserted, and is rotatable about the axis of the pivot shaft.
The first hinge piece is provided with a bottomed receiving hole that opens at the bottom of the fitting groove and extends in the length direction of the pivot, and a coil spring is received in the receiving hole. At the same time, when the coil spring is in a free state, one end of the coil spring is supported by the bottom of the receiving hole, while the other end portion projects from the open end of the receiving hole. And the other end of the coil spring are pressed toward the bottom by the first linear portion in a state where the portion and the second linear portion are fitted in the corresponding fitting grooves, respectively. The coil spring is in an elastically compressed state, and in this state, the pivot peripheral portion of the inner surface of the first hinge piece is placed on one surface of the intermediate hinge piece and the biasing force of the coil spring and the U-shaped spring. Elastically pressed by receiving the biasing force of the piece On the other hand, the concave peripheral portion of the inner surface of the second hinge piece is elastically pressed against the other surface of the intermediate hinge piece under the urging force of the U-shaped spring piece. A hinge device for glasses. A hinge device for eyeglasses for pivotally attaching a temple to an armor provided on the outer side of the lens part of the eyeglasses so that the temple can be opened and closed,
The temple includes a U-shaped spring piece bent in a U-shape at a tip side portion thereof, and a first linear portion and a second linear portion of the U-shaped spring piece which are vertically opposed to each other and are parallel to each other. The hinge member is elastically held between the linear portions,
The hinge member is in surface contact between the first hinge piece including the first holding plate, the second hinge piece including the second holding plate, and the first and second holding plates. An intermediate hinge piece interposed, the intermediate hinge piece is provided at the rear end of the armor,
In the first hinge piece, a fitting groove for fitting the first linear portion is provided on the outer surface of the first holding plate, and a pivot is provided on the inner surface of the first holding plate. And
The second hinge piece is provided with a fitting groove for fitting the second linear portion on the outer surface of the second holding plate, and on the inner surface, the front side portion of the pivot is fitted. There is a recess for entering,
The intermediate hinge piece is provided with a pivot attachment hole through which the pivot shaft can be closely inserted, and is rotatable about the axis of the pivot shaft.
The first hinge piece is provided with a bottomed receiving hole that opens at the bottom of the fitting groove and extends in the length direction of the pivot, and a coil spring is received in the receiving hole. At the same time, when the coil spring is in a free state, one end of the coil spring is supported by the bottom of the receiving hole, while the other end portion projects from the open end of the receiving hole. And the other end of the coil spring are pressed toward the bottom by the first linear portion in a state where the portion and the second linear portion are fitted in the corresponding fitting grooves, respectively. The coil spring is in an elastically compressed state, and in this state, the pivot peripheral portion of the inner surface of the first hinge piece is placed on one surface of the intermediate hinge piece and the biasing force of the coil spring and the U-shaped spring. Elastically pressed by receiving the biasing force of the piece On the other hand, the concave peripheral portion of the inner surface of the second hinge piece is elastically pressed against the other surface of the intermediate hinge piece under the urging force of the U-shaped spring piece. A hinge device for glasses.   The first linear portion is provided with an engagement recess for fitting the tip of the other end portion of the coil spring, and the second linear portion is provided at the bottom of the fitting groove. The hinge device for spectacles according to claim 1 or 2, wherein a second engaging portion capable of engaging with the first engaging portion is provided.   The fitting grooves provided in each of the first and second holding plates in a state where the intermediate hinge piece is interposed between the first and second holding plates so that the fitting grooves can be in a parallel state. The first positioning engagement portion that can be engaged with the second positioning engagement portion provided on the inner peripheral surface of the concave portion is provided on the front side portion of the pivot. The hinge device for the spectacles described.   The first sandwiching plate, the second sandwiching plate, and the intermediate hinge piece have a disk shape with the same diameter, and the pivot is projected at the center of the inner surface of the first sandwiching plate. Further, the fitting groove provided on the outer surface of the first holding plate is provided so as to pass through a center portion of the outer surface, and the fitting groove provided on the outer surface of the second holding plate is 5. The hinge device for glasses according to claim 1, wherein the hinge device is provided so as to pass through a central portion of the outer surface.   An annular holding member used for constituting the eyeglass hinge device according to any one of claims 1 to 5, wherein a tip of the first linear portion of the U-shaped spring piece and the second An annular holding member for constituting a hinge device for spectacles, wherein the ends of the linear portions are connected to each other by a connecting piece.   An annular holding member used for constituting the eyeglass hinge device according to any one of claims 1 to 5, wherein a first extension is provided at a tip of the first linear portion of the U-shaped spring piece. And a second extension projecting from the tip of the second linear portion, and the first extension and the tip of the second extension are connected to each other. An annular holding member for constituting a hinge device for spectacles, characterized in that it is connected.

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