JP3913322B2 - Connecting device and spectacle frame using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting device and a spectacle frame using the same, and more specifically, a connecting device suitable for use in connecting the temples of a spectacle frame, and at least one temple using the connecting device. The present invention relates to a spectacle frame that is pivotally connected to Satoshi.
[0002]
[Prior art]
Small screws are usually used to attach various eyeglass components, such as hinges that connect the temples of the eyeglass frame so that they can be pivoted, lens frames, or nose pads.
[0003]
For example, in a conventional hinge, one piece is sandwiched between two pieces, both are connected with screws, and tightened to apply pressure between one piece and two pieces. The frictional force between the single frame and the double frame generated as the vertical drag was used as the hinge opening / closing resistance when the temple was opened / closed.
[0004]
[Problems to be solved by the invention]
In the conventional hinge described above, the opening / closing resistance of the hinge when opening and closing the temple is adjusted by adjusting the screw tightening amount (tightening), but this adjustment is difficult. It was accompanied.
[0005]
That is, since the screw has a very small diameter, and the hinge components and nuts in which the screw hole is screwed are small, the screw is screwed into the screw hole only about two or three threads. In addition, because the hinges of the glasses are frequently opened and closed, the screws were very loose. Then, once the screw is loosened, the opening / closing resistance is lost, the temple is in a so-called fluttering state, cannot be stopped at an arbitrary angle, and the handling is inconvenient.
[0006]
Certainly, it is possible to secure the loosening by forming the screw a little longer and tightening the screw firmly using a relatively thick nut, or by applying an adhesive to the screw thread and screwing it together. Is possible. However, in the former case, if the tightening force is too strong, the frictional force between the single piece and the double piece becomes large, and a galling phenomenon occurs at the sliding portion between the two pieces. Especially in the case of titanium material, the galling is severe and the hinge cannot be opened and closed. Therefore, the present situation is that galling is prevented by using a white (Western silver) washer on the sliding surface. On the other hand, the latter case has a disadvantage that it is difficult to remove the screws when repairing or replacing the spectacle parts.
[0007]
  The present invention has been made under such circumstances,Its firstThe purpose is a connection that can maintain an appropriate switching resistance over a long period of time and does not cause galling due to friction between the connecting parts, and can be easily disassembled when replacing parts. To provide an apparatus.
[0008]
  Also,BookInventionSecondAn object of the present invention is to provide a spectacle frame that can maintain an appropriate opening / closing resistance of a temple for a long period of time and that can be easily attached and exchanged for temples.
[0009]
[Means for Solving the Problems]
  From the first viewpoint, the present invention provides a first member (24) provided with at least two first connecting portions (24a, 24b) each having a coaxial connecting hole (24c, 24d), A second member (26) provided with a second connecting part (26a) in which a connecting hole (26b) is formed corresponding to the connecting hole (24c, 24d), and the first connecting part (24a, 24b) with the second connecting portion (26a) meshed with the first member (24) and the second member (26) through the connecting holes (24c, 26b, 24d). In the connecting device including a shaft member that relatively rotatably connects the shaft member, the shaft member is connected to the connection hole (24c, 24d) of the first connection portion (24a, 24b) and the second connection. Cylinder inserted or press-fitted into the connecting hole (26b) of the portion (26a) The elastic sleeve (28) and a pin (30) having an outer diameter larger than the inner diameter of the elastic sleeve press-fitted into the elastic sleeve, and the longitudinal end of the pin becomes narrower as it goes to the end. The shaft member has a connecting hole (24c, 24d) of the first connecting part (24a, 24b) and a connecting hole (26b) of the second connecting part (26a). AndThe pin (30) is inserted into the inserted or press-fitted elastic sleeve (28).It can be press-fitted in a through state.The elastic sleeve (28) is connected to the inner peripheral surface of the connection hole (24c, 24d) of the first connection part (24a, 24b) and the connection hole (24c, 24d) of the first connection part (24a, 24b). An inner peripheral surface of the connecting hole (26b) of the second connecting portion (26a) having a larger area than the inner peripheral surface ofA biasing force in the radial direction is applied to the radiating force.
[0010]
  According to this, the shaft member isThe elastic sleeve is composed of a cylindrical elastic sleeve and a pin, and the pin is inserted into or pressed into the connection hole of the first connection portion and the connection hole of the second connection portion.It can be press-fitted in a through state.An elastic sleeve having an inner peripheral surface of the connecting hole of the first connecting portion and an inner peripheral surface of the connecting hole of the second connecting portion having a larger area than the inner peripheral surface of the connecting hole of the first connecting portion;
Giving radial biasing force againstFrom thatWhen relatively rotating the first member and the second member, a frictional force is generated between the outer peripheral surface of the shaft member and the inner peripheral surface of the coupling hole, and this frictional force is generated by the first member and the second member. Acts as an open / close resistance. Accordingly, it is no longer necessary to generate a switching resistance by applying pressure between the first connecting portion and the second connecting portion, and a galling phenomenon occurs between the first connecting portion and the second connecting portion. There is no risk of doing so.
[0011]
  In addition, the connection hole provided in the first connection portion in a state where the second connection portion provided in the second member is engaged between at least two first connection portions provided in the first member. The first member and the second member can be connected by simply press-fitting the shaft member in a penetrating state to the connection hole provided in the second connection portion, while the shaft member is used as the first connection portion. The first member and the second member can be easily separated by simply removing them from the provided connecting hole and the connecting hole provided in the second connecting portion. A cylindrical elastic sleeve in which a shaft member is inserted or press-fitted into the connecting hole of the first connecting part and the connecting hole of the second connecting part, and the elastic sleeve press-fitted into the elastic sleeve The pin has an outer shape larger than the inner diameter of the pin, and the pin has a taper shape in which the longitudinal end of the pin becomes narrower toward the end, so that the outer diameter of the pin is somewhat larger than the inner diameter of the sleeve. However, it is possible to smoothly press-fit the pin into the elastic sleeve. Also,Since the area of the inner peripheral surface of the connecting hole of the second connecting portion is set larger than the inner peripheral surface of the connecting hole of the first connecting portion, the contact area of the elastic sleeve with respect to the first connecting portion is larger. The contact area with respect to the second connecting portion is larger (therefore, the frictional force between the second connecting portion and the elastic sleeve is larger than the frictional force generated between the second connecting portion and the elastic sleeve). The elastic sleeve rotates relative to the second connecting portion integrally with the first connecting portion, and can maintain the opening / closing resistance more stably.
[0012]
  In this case, as in the invention described in claim 2,The elastic sleeve (28) may be made of resin.
[0014]
  From a second viewpoint, the present invention provides:A pair of temples (14A, 14B) rotatably connected to Satoshi (20A, 20B), wherein at least one of the pair of temples isOf the present inventionIt is characterized in that it is pivotally connected to the wisdom using a connecting device (22).
[0015]
According to this, an appropriate temple opening and closing resistance can be maintained over a long period of time due to the effect of the connecting device, and the temple can be easily attached and replaced.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS.
[0017]
FIG. 1 is a perspective view of an eyeglass frame 10 according to an embodiment in which a connecting device according to the present invention is applied to a hinge for connecting temples to a wisdom.
[0018]
The spectacle frame 10 includes a spectacle frame main body (metal frame) 12 and a pair of temples 14A and 14B connected to the spectacle frame main body 12 through hinges 22 as connecting devices so as to be rotatable (openable and closable). It has.
[0019]
The eyeglass frame main body 12 includes a pair of rims 16A and 16B for holding a target lens shape (not shown), and a bridge for connecting and fixing the rims 16A and 16B so as to have a symmetrical positional relationship as usual. 18, a pad 19 provided on each of the inner portions of the rims 16A and 16B, and a pair of bent wishes (hereinafter referred to as “wisdom”) 20A and 20B respectively fixed to the outer portions of the rims 16A and 16B. Have. And temples 14A and 14B are connected to the rear ends of these wisdom 20A and 20B through hinges 22 described later, respectively. As the temples 14A and 14B, a half-hanging type made of metal (for example, made of titanium) and having a tip cell attached to the temple end is used.
[0020]
Next, the structure and the like of the hinge 22 as a connecting device for connecting one temple 14B to the wi 20B will be described with reference to FIGS. FIG. 2 shows an exploded perspective view near the hinge 22. As shown in FIG. 2, the hinge 22 is welded to the wisdom 20B, and a first butterfly as a first member in which two pieces 24a and 24b as a first connecting portion are integrally formed. A second member as a second member in which a piece 26a is formed as a second connecting portion that can be engaged between the piece 24 and the two pieces 24a, 24b formed on the butterfly portion 24 and welded to the temple 14B. Two butterfly portions 26, and a resin cylindrical sleeve (hereinafter referred to as "sleeve") 28 as an elastic sleeve that can be inserted into connection holes 24c, 26b, and 24d formed in the pieces 24a, 26a, and 24b, respectively. A cylindrical metal pin 30 having an outer diameter somewhat larger than the inner diameter of the sleeve 28 is formed.
[0021]
Of these, the two pieces 24a and 24b of the first butterfly portion 24 are formed in the same shape and the same dimensions, and the connecting holes 24c and 24d formed in the pieces 24a and 24b are concentric and have the same diameter. It has become. Further, the connection hole 26b formed in the piece 26a of the second butterfly portion 26 has the same inner diameter as the inner diameters of the connection holes 24c and 24d. Furthermore, the outer diameter of the sleeve 28 is substantially the same as the inner diameter of the coupling holes 24c, 24d, and 26b here.
[0022]
Here, a procedure for assembling the hinge 22, that is, a procedure for attaching the temple 14B to the wilt 20B will be briefly described.
[0023]
First, the two pieces 24c and 24d of the first butterfly portion 24 and the piece 26a of the second butterfly portion 26 are meshed so that the connection holes 24c, 24d and 26b are coincident with each other. In this state, the sleeve 28 is inserted from above (or below) in the order of, for example, the connecting holes 24c, 26b, 24d (or the connecting holes 24d, 26b, 24c). FIG. 3 shows a state where the first butterfly portion 24 and the second butterfly portion 26 are connected by the sleeve 28 in this manner.
[0024]
Next, as indicated by an arrow A in FIG. 3, the pin 30 is press-fitted into the sleeve 28. This press-fitting is performed, for example, by hitting the upper end of the pin 30 with a hammer or the like (not shown). In this case, since the outer diameter of the pin 30 is somewhat larger than the inner diameter of the sleeve 28, in order to smoothly perform the above-described press-fitting, the vicinity of both end portions in the longitudinal direction of the pin 30 becomes thinner as it goes to the end. It is formed in a taper shape.
[0025]
FIG. 4 shows a state where the pin 30 is press-fitted into the sleeve 28 as described above. In the state of FIG. 4, radial pressure (see reference numeral N in FIG. 4) acting on the inner circumferential surface of the sleeve 28 is applied to the entire surface, thereby connecting the outer circumferential surface of the sleeve 28. The inner surfaces of the holes 24c, 26b, and 24d are in pressure contact with a predetermined pressure. For this reason, when the second butterfly portion 26 is to be rotated relative to the first butterfly portion 24, it is between the outer peripheral surface of the sleeve 28 and the inner peripheral surfaces of the connection holes 24c, 26b, and 24d. A frictional force is generated in which the acting pressure N is a vertical drag force, and this frictional force becomes the opening / closing resistance of the hinge 22.
[0026]
This opening / closing resistance, that is, the frictional force adjusts the pressure acting between the outer peripheral surface of the sleeve 28 and the inner peripheral surface of the coupling holes 24c, 26b, 24d, or , 24d can be set to a desired value by adjusting the coefficient of friction with the inner peripheral surface. The former pressure can be adjusted, for example, by changing the outer diameter of the pin 30, and the latter friction coefficient can be adjusted, for example, by changing the material of the pieces 24, 26. .
[0027]
As is clear from the above description, in this embodiment, the shaft 28 is constituted by the sleeve 28 and the pin 30.
[0028]
By the way, as a result of the inventor's many experiments, the sleeve 28 is more integrally rotated with respect to the two pieces such as the pieces 24a and 24b integrally with the one piece such as the piece 26a. It was found that a stable switching resistance can be obtained over a long period of time.
[0029]
When the pin 30 is press-fitted into the sleeve 28, the central portion in the longitudinal direction of the sleeve 28 is compressed in the radial direction (radial direction), and as shown in FIG. The upper and lower ends of the sleeve 28 are opened from the inner peripheral surfaces of the connecting holes 24c and 24d, and are about to spread outward flexibly. In this embodiment, the thickness of the pieces 24a and 24b is used to rotate the sleeve 28 at the open portion, that is, to rotate the sleeve 28 integrally with the butterfly portion 26 provided with the piece 26a with respect to the two pieces 24a and 24b. The thickness of the piece 26a is set to be somewhat thicker than the total of the above. Thereby, the contact area with the piece 26a becomes larger than the contact area with the pieces 24a and 24b of the sleeve 28 (therefore, the frictional force between the piece 26a and the sleeve 28 is increased between the pieces 24a and 24b and the sleeve 28). The sleeve 28 rotates relative to the pieces 24a and 24b integrally with the piece 26a, and can maintain the opening / closing resistance more stably.
[0030]
Since the other temple 14A is also connected to the wi 20A via a hinge 22 having the same configuration as described above, a detailed description thereof will be omitted.
[0031]
Next, a procedure for disassembling the hinge 22 for exchanging the temple will be described. For example, a jig 50 as shown in FIG. 5 is used for disassembling the hinge 22. The jig 50 includes a main body 52 having a U-shaped cross section, and one of the opposing pieces (downward in FIG. 5) is a receiving base 52A. The pedestal 52 </ b> A is open in the vertical direction in FIG. 5, and has a U-shaped groove 54 whose width is slightly larger than the outer diameter of the sleeve pin 28. In addition, a vertical screw hole is formed in the other facing piece (upward in FIG. 5) facing the groove 54 of the pedestal 52A, and a male screw 56 is screwed into the screw hole. A knob 58 is integrally fixed to an end portion of the male screw 56 opposite to the groove 54, and a small diameter portion 57 having substantially the same diameter as the sleeve 28 is formed at the end portion of the groove 54 side. . The axial dimension of the small diameter portion 57 is set slightly larger than the length of the sleeve 28. A shaft 60 that is slightly smaller in diameter than the pin 30 is provided at the end of the small diameter portion 57.
[0032]
In order to disassemble the hinge 22 using the jig 50 configured as described above, the hinge 22 is positioned directly above the groove 54 of the cradle 52A, and the spectacle frame 10 is rested on the cradle 52A. If the male screw 56 is screwed downward by placing the knob 58 in the direction of arrow B, the tip of the shaft 60 is applied to the end surface of the pin 30, and the knob 58 is further screwed downward by screwing the male screw 56 downward. Can be extracted. When the male screw 56 is further screwed downward by turning the knob 58 after the pin 30 has been extracted, the end surface of the small diameter portion 57 abuts the end surface of the sleeve 28. Then, by further turning the knob 58 and screwing the male screw 56 downward, the sleeve 28 is detached from the first and second butterfly portions 24 and 26, and the knob 58 is turned in the opposite direction to bring the male screw 56 upward by a predetermined amount. By returning, the shaft 60 and the small diameter portion 57 are detached from the first and second butterfly portions 24 and 26, and the disassembly of the hinge 22 is completed. Thus, according to the jig 50, the hinge 22 can be easily disassembled by simply turning the knob 58. It is also possible to remove the sleeve 28 by pushing the pin 60 with a tip of a screwdriver after removing the pin 60 with a fine tool such as a sewing needle.
[0033]
As described above, according to the present embodiment, the open / close resistance between the first butterfly portion 24 and the second butterfly portion 26 constituting the hinge 22 is changed to the frictional force between the pieces 24a, 24b and the piece 26a. Regardless, the frictional force between the sleeve 28 and the pieces 24a and 24b, more specifically, between the outer peripheral surface of the sleeve 28 and the inner peripheral surfaces of the connecting holes 24c and 24d formed in the pieces 24a and 24b, respectively. Therefore, no galling phenomenon occurs between the first butterfly portion 24 and the second butterfly portion 26, and the resin sleeve 28 has elasticity. Therefore, the decrease in resistance when worn can be minimized. Therefore, the open / close resistance of the hinge 22, that is, the open / close resistance of the temples 14A and 14B, can be stably maintained over a long period of time. Further, since the sleeve 28 is made of resin and has an appropriate lubricity, smooth opening and closing of the hinge 22 is maintained even without lubrication, and wear is also small.
[0034]
When the temples 14A and 14B are attached to the spectacle frame main body 12, the pieces 24a and 24b of the first butterfly portion 24 and the piece 26a of the second butterfly portion 26 constituting the hinge 22 are engaged with each other. Thus, after the sleeve 28 is sequentially inserted into the connecting holes 24c, 26b, and 24d, it is only necessary to press-fit the pin 30 into the sleeve 28, and adjustment as in the conventional example is unnecessary. On the other hand, when replacing parts, the hinge 22 can be easily disassembled by removing the pin 30 and the sleeve 28 sequentially as described above. Therefore, the temples 14A and 14B can be easily attached and replaced with the spectacle frame main body 12.
[0035]
In order to obtain a necessary opening / closing resistance by adjusting a screw with a conventional hinge, the butterfly portion 124 having two pieces as shown in FIG. The arrangement (position, angle) of the broken line portion was set. On the other hand, in the hinge 22 according to the present embodiment, as described above, no structural connection force is required between the pieces 24a and 24b and the piece 26a. For example, the two pieces 24a and 24b and these pieces The degree of freedom in designing the shape and the like of the first butterfly portion 24 having the shape increases, and as shown in FIG. 6B, a shape that does not easily deform and a slit angle can be set. That is, in the present embodiment, the first butterfly portion 24 has no constricted portion as in the conventional shape, and a slit (see the broken line portion) is inserted in a portion closer to the center of the connecting hole. The hinge strength can be improved.
[0036]
Further, in the present embodiment, the cylindrical sleeve 28 without flange and the columnar pin 30 without flange are used. Therefore, when the hinge 22 is disassembled, the sleeve 28 and the pin 30 are moved up and down. It can be extracted in either direction.
[0037]
In the above embodiment, the hinge 22 is constituted by a combination of the first butterfly portion 24 having the two pieces 24a and 24b and the second butterfly portion 26 having the one piece 26a. As described above, the present invention is not limited to this, and a combination of a butterfly portion having a so-called three-piece piece and a butterfly portion having a two-piece piece that can be meshed with the three-piece piece. Of course, a hinge as a connecting device may be configured.
[0038]
Further, in the above embodiment, the thickness of the piece 26a is set somewhat thicker than the total thickness of the pieces 24a and 24b, and the contact area of the sleeve 28 with respect to the pieces 24a and 24b is made larger than the contact area of the piece 28a and 24b. Thus, the case where the sleeve 28 is rotated with respect to the two pieces 24a and 24b integrally with the piece 26a has been described, but the present invention is not limited to this.
[0039]
That is, in order to rotate the sleeve 28 integrally with the single piece piece relative to the double piece part, basically, the difference in the frictional force between the single piece part and the double piece part generated between the sleeve 28 and the single piece piece is obtained. In addition, the setting may be made such that the two pieces are relatively loose, and various specific embodiments are conceivable as follows.
[0040]
For example, as shown in FIG. 7, the inner diameter of the connecting hole 26b formed in the piece 26a of the second butterfly portion 26 is set to be the connecting holes 24c and 24d formed in the pieces 24a and 24b of the first butterfly portion, respectively. The inner diameter of the sleeve 28 may be smaller than the inner diameter of the sleeve 28. Alternatively, as shown in FIG. The diameter of the portion may be formed somewhat larger than the connection hole, and the sleeve may be press-fitted into the connection holes 24c, 26b, and 24d. In addition, as shown in FIG. 9, similarly to the case of the sleeve of FIG. 8, the both ends in the longitudinal direction of the pin 30 may be tapered so as to become narrower toward the end.
[0041]
In the case of the embodiment of FIG. 7, the sleeve 28 is strongly pressed against the piece 26a by rotating the inner diameter of the connecting hole 26b formed in the piece 26a so as to rotate integrally with the second butterfly portion 26. Become. In the case of the embodiment of FIG. 8, the sleeve 28 is strongly pressed against the piece 26a when the sleeve 28 is press-fitted into the connecting holes 24c, 26b, and 24d because the outer diameter of the sleeve 28 is thick at the center in the longitudinal direction. And rotate together with the second butterfly portion 26. Further, in the case of the embodiment of FIG. 9, since the central portion of the pin 30 is thick, the sleeve 28 is strongly pressed against the piece 26 a and rotates integrally with the second butterfly portion 26.
[0042]
Furthermore, as shown in FIG. 10, on the inner peripheral surface of the connection hole 26b (the same diameter as the connection holes 24c and 24d of the pieces 24a and 24b) formed in the piece 26a of the second butterfly 26. Equally spaced serrated grooves 26c may be formed. In this manner, as in FIG. 4, when the pin 30 is press-fitted into the sleeve 28, the sleeve 28 is pushed out in the radial direction, and the outer peripheral surface of the sleeve 28 enters the groove 26c and is securely connected to the piece 26. Integrated into As a result, the sleeve 28 can be more reliably integrated with the second butterfly portion 26 than in the case of the embodiment shown in FIGS. The inventor confirmed that relative rotation with respect to 24a and 24b can be performed more smoothly.
[0043]
In the above embodiment, the case where a metal pin made of a solid columnar member is used as the pin 30 has been described. Instead, a slit is provided in the longitudinal direction as shown in FIG. You may use the roll pin 31 which consists of the made spring material. Since the roll pin 31 is inserted into the sleeve 28 in a radially contracted state, the expansion force of the roll pin 31 always acts on the sleeve 28 and is stable in combination with the elasticity of the resin forming the sleeve 28. The open / close resistance can be maintained for a longer period of time. Further, in this case, a slit may be formed in the sleeve 28 in the longitudinal direction, and in this way, the sleeve 28 is easy to expand and more easily adheres to the inner peripheral surfaces of the coupling holes 26c, 24b, 26d.
[0044]
Moreover, although the said embodiment demonstrated the case where a shaft member was comprised by the combination of the resin sleeve 28 and the pin 30, this invention is not limited to this, The outer diameter which can be press-fit in a connection hole Further, the shaft member may be formed of a solid cylindrical or rod-shaped resin member having a shape, and in such a case, the shaft member is attached and detached using the jig 50 of FIG. It is desirable to do.
[0045]
Furthermore, although the said embodiment demonstrated the case where the connection apparatus which concerns on this invention was used for the connection with respect to the wisdom of the temple of a spectacles frame, it connected not only to this but between rotation members using a small screw. The present invention can be suitably applied to any device that is a device that is mainly a loose screw.
[0046]
【The invention's effect】
  As explained above,Connecting device of the present inventionAccording to the above, it is possible to maintain an appropriate switching resistance for a long period of time, and there is no galling phenomenon due to friction between the connecting parts, and it is easily disassembled when replacing parts. Can do itEven if the outer diameter of the pin is slightly larger than the inner diameter of the sleeve, the pin can be smoothly pressed into the elastic sleeve.It has an unprecedented superior effect.
[0047]
  Also,Eyeglass frame of the present inventionAccording to the invention, it is possible to maintain an appropriate opening / closing resistance of the temple for a long period of time, and there is an effect that the temple can be easily attached and exchanged with respect to wisdom.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a spectacle frame according to an embodiment.
FIG. 2 is an exploded perspective view of the vicinity of the hinge of the eyeglass frame of FIG. 1;
FIG. 3 is a schematic sectional view showing a state in the middle of assembling the hinge.
FIG. 4 is a schematic cross-sectional view showing a state in which the hinge has been assembled.
FIG. 5 is a schematic perspective view showing a jig used for disassembling the hinge.
FIG. 6A is a plan view showing a conventional butterfly portion having two pieces, and FIG. 6B is a plan view showing a first butterfly portion according to one embodiment.
FIG. 7 is an explanatory view showing a partial cross-section of a hinge structure according to another embodiment.
FIG. 8 is an explanatory view showing a part of a configuration of a hinge according to another embodiment.
FIG. 9 is an explanatory view showing a configuration of a hinge according to another embodiment in a partial cross section.
FIG. 10 is a plan view showing a second butterfly portion according to still another embodiment.
FIG. 11 is a perspective view showing a roll pin.
[Explanation of symbols]
10 glasses frame
12 Eyeglass frame body
14A, 14B temple
20A, 20B Satoshi
22 Hinge (connecting device)
24 1st butterfly (first member)
24a, 24b piece (first connecting part)
24c, 24d connecting hole
26 Second butterfly (second member)
26a piece (joint part of brother 2)
26b connecting hole
28 Sleeve (part of shaft member, elastic sleeve)
30 pins (part of shaft member)

Claims (3)

A first member provided with at least two first connection parts each having a coaxial connection hole, and a second member provided with a second connection part formed with a connection hole corresponding to the connection hole. The first member and the second member can be rotated relative to each other through the connecting holes in a state where the second connecting portion is engaged between the member and the first connecting portion. In a coupling device comprising a shaft member to be coupled,
A cylindrical elastic sleeve in which the shaft member is inserted or press-fitted into the connecting hole of the first connecting part and the connecting hole of the second connecting part, and the elastic sleeve press-fitted into the elastic sleeve A pin having an outer diameter larger than the inner diameter of the pin, and is formed in a tapered shape such that a longitudinal end portion of the pin becomes thinner toward the end, and the shaft member is a connection hole of the first connection portion. And the pin can be press-fitted into the elastic sleeve inserted or press-fitted into the connecting hole of the second connecting part, and in the press-fitted state, the elastic sleeve can be inserted into the connecting hole of the first connecting part. A radial urging force is applied to the inner peripheral surface and the inner peripheral surface of the connection hole of the second connection portion having a larger area than the inner peripheral surface of the connection hole of the first connection portion. Connecting device. The coupling device according to claim 1, wherein the elastic sleeve is made of resin . In a spectacle frame with a pair of temples that are pivotally connected to Satoshi,
At least one of the pair of temples is rotatably connected to the wisdom using the connecting device according to claim 1 or 2.

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