JPH09133898A - Screwless hinge for spectacle frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the screwless hinge for the spectacle frame which requires no screw component. SOLUTION: A rotary shaft member 1 is pivoted on a bearing member 2 equipped with two barrel projections 21 and 21, a shaft recessed part 11 is formed in the part sandwiched between the barrel projections 21 and 21 of the rotary shaft member 1 and energized radially between the barrel projections 21 and 21 to prevent the rotary shaft member 1 from falling from the bearing member 2, and at the same time, the rotary shaft member 1 and bearing member 2 are slid with desired slide resistance. Consequently, the need for troublesome screw clamping adjustment is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screwless hinge for an eyeglass frame, and more particularly, to a screwless hinge for an eyeglass frame that does not require any screw parts that require troublesome screw tightening adjustment. .

[0002]

2. Description of the Related Art Conventional hinges are screwed and connected to each other by using hinge screws as hinge shafts for the piece parts provided at the end piece ends of the spectacle front frame and the ear hook temple base end. Was configured. Therefore, the temple opening and closing resistance (commonly referred to as "Agaki" in the eyeglass industry) that affects the usability of the eyeglasses greatly varies depending on the tightening condition of the hinge screw.

For example, if the hinge screws are tightened too much at the time of assembling the glasses, the sliding resistance between the piece parts will increase and the temple opening and closing will be seriously lost. If you loosen the hinge screw in order to make it, this time, the hinge screw will easily loosen due to vibration etc., and it will be a really difficult eyeglass frame that the temple will open and close just by tilting the eyeglass frame. .

Therefore, in the conventional eyeglass hinge,
It was necessary to adjust the tightening of the hinge screws in order to keep the temple open / close resistance (adaki) moderate, but the adjustment of the hinge screws was very troublesome. This is because this hinge screw is a very small part, and its adjustment is inevitably very fine.
Furthermore, this adjustment is not required to be done only once, and because the piece parts and the like have worn out, they have to be refastened many times during use of the glasses. This is annoying even for a spectacle user who has to go to a store or the like every time the screw tightening needs to be adjusted.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional eyeglass hinge using a hinge screw, and it is indispensable to perform a troublesome fine adjustment. Since no screw parts are used, the temple opening / closing resistance (agaki) can be maintained almost constant without causing screw loosening problems even after many years of use, and the assembly work is extremely easy. It is a technical object to provide a screwless hinge for an eyeglass frame that can be manufactured at low cost.

[0006]

In order to solve the above-mentioned technical problems, the present invention provides an ear hook temple T at an end on the take-out side of end pieces E provided at the left and right ends of a spectacle front frame F.
Is a hinge for a spectacle frame which is hinged to be freely foldable. The bearing member 2 having two piece projections 21 and 21 pivotally supports the rotary shaft member 1 and the piece projection 21 of the rotary shaft member 1. A shaft recess 11 is formed in a portion sandwiched by 21, and the rotating shaft member 1 is axially removed from the bearing member 2 by urging the shaft recess 11 between the projections 21 and 21 in the axial radial direction. At the same time as preventing the above, a technical means for sliding the rotating shaft member 1 and the bearing member 2 with a desired sliding resistance is adopted.

In order to solve the above-mentioned technical problems, the present invention provides an ear hook temple T at the take-out side end of the end pieces E provided at the left and right ends of the spectacle front frame F as necessary. Is a hinge for spectacle frames which is hinged to be freely foldable, in which a shaft recess 11 is formed on at least a part of the shaft peripheral surface near the tip, and the temple T or end piece is formed at a bent portion 12 formed near the rear end. A rotary shaft member 1 joined to an end of E; and two piece projections 21 and 21 each having a bearing hole 20 to which the rotary shaft member 1 is to be fitted are provided, and the end piece E or A bearing member 2 joined to the end of the temple T;
It is arranged in the locking portion 22 formed at the root part of the
22 and a leaf spring member 3 for urging the rotary shaft member 1 inserted into the bearing holes 20, 20 in directions away from each other;
The leaf spring member 3 urges the shaft recess 11 of the rotary shaft member 1 to prevent the rotary shaft member 1 from slipping out of the bearing hole 20, and at the same time the rotary shaft member 1 is opened and closed. The technical means of sliding the shaft recess 11 of 1 and the leaf spring member 3 with a desired sliding resistance is adopted.

In order to solve the above-mentioned technical problem, the present invention also provides a leaf spring member for urging the engaging portion 22 of the bearing member 2 and the rotary shaft member 1 in the direction away from each other as necessary. Three
Has a curved concave portion 31 on the upper portion and two leg portions 32, 32 on the lower portion.
Is formed to have a substantially M-shaped cross section, and the locking step 23 is formed at a required position of the locking portion 22 of the bearing member 2, so that the leg portions 32 of the leaf spring member 3 are locked. A technical means is adopted in which the leaf spring member 3 is fixed to the locking portion 22 by fitting it into the position 23, and at the same time, the expansion deformation of the leg portions 32, 32 is limited to obtain a desired elastic biasing force.

Further, in order to solve the above-mentioned technical problems, the present invention further includes, as necessary, ear-hook temples at the carry-out side end portions of the end pieces E provided at both left and right ends of the spectacle front frame F. A hinge for an eyeglass frame in which T is foldably hinged, and a shaft recess 11 is formed on at least a part of the shaft peripheral surface near the tip, and the temple T or end is formed at a bent portion 12 formed near the rear end. The end piece E is provided with a rotary shaft member 1 joined to an end of the piece E; and two piece projections 21 and 21 respectively having bearing holes 20 and 20 into which the rotary shaft member 1 is fitted. Alternatively, the bearing member 2 joined to the end of the temple T;
The leaf spring member 3 is disposed in the locking portion 22 formed at the root portion between the two 21, and biases the locking portion 22 and the rotating shaft member 1 inserted into the bearing holes 20 and 20 in the direction away from each other. And; tip part at the tip
41 is formed, and a small diameter portion 42 is formed in the center, and the shaft recess 11 of the rotating shaft member 1 and the leaf spring member 3 are formed.
And a pin member 4 which is interposed between the pin spring 4 and the pin member 4 so as to be easily attached and detached, and the leaf spring member 3 biases the shaft recess 11 of the rotary shaft member 1 through the pin member 4 to rotate it from the bearing hole 20. Moving shaft member 1
Of the rotary shaft member 1 and the pin member 4 at the same time when the temple T is opened and closed.
The technical means of sliding the small diameter portion 42 and the small diameter portion 42 with a desired sliding resistance is adopted.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the first and second embodiments shown in the accompanying drawings.

FIG. 1 is an overall plan view showing an eyeglass frame to which the screwless hinge of the first embodiment of the present invention is applied, and FIG. 2 is a perspective view showing the overall structure of the screwless hinge of the first embodiment. Fig. 3, Fig. 3 is a perspective view showing a state in which the periphery of the leaf spring member of the hinge without the screw is broken, Fig. 4 is a partial side view of the hinge without the screw, and Fig. 5 is a modification of the hinge without the screw. It is a perspective view shown. FIG. 6 is a perspective view showing the overall structure of a screwless hinge of a second embodiment according to the present invention, FIG. 7 is an overall perspective view of the pin member 4 of the screwless hinge, and FIG. 8 is a screwless hinge. It is a partial side view of a turn.

[First Embodiment] In FIG. 1, reference numeral F indicates a spectacle front frame in which a pair of rims R and R are symmetrically connected by a bridge B. End pieces E and E are brazed and joined to both ends. Further, in the figure, what is designated by the reference numeral N is a nose pad which is brazed and joined to the opposing inner side portions of the pair of rims R and R, and what is designated by the reference numeral T is the ear hanging temple.

The temple T is rotatably hinged to the carry-out side end of the end piece E by means of the screwless hinge of this embodiment. That is, as shown in FIGS. 2 and 3, the threaded hinge of the present embodiment should support the rotating shaft member 1 that serves as the hinge rotating shaft of the hinge connecting mechanism and the rotating shaft member 1. Bearing member 2 provided with piece protrusions 21
And a leaf spring member 3 which prevents the rotary shaft member 1 from slipping out of the bearing hole 20 of the piece projections 21 and gives a temple opening / closing resistance (adhesion).

The rotating shaft member 1 of the present embodiment is made of a metal round wire material, and a shaft recess 11 having a smaller diameter than the other is formed on the shaft peripheral surface near the tip thereof, and a shaft recess 11 is formed near the rear end. A bent portion 12 that has been bent by 180 ° is formed. At the bent portion 12, the rotary shaft member 1 is brazed and joined to the base end portion of the temple T.

The bearing member 2 of this embodiment is provided with two parallel piece protrusions 21 and 21 in which bearing holes 20 and 20 having substantially the same diameter as the rotating shaft member 1 are opened. A locking portion 22 having a locking step 23 formed at a predetermined position is formed at a root portion between the piece projections 21. The rotary shaft member 1 is supported so that the shaft concave portion 11 of the rotary shaft member 1 faces the engaging portion 22 between these piece projections 21 (21) (FIGS. 3 and 4).
reference).

The bearing member 2 is joined to the end portion of the end piece E on the take-out side at the rear end side surface portion of the engaging portion 22. As shown in the figure, in the present embodiment, the bearing member 2 and the end piece E are integrally formed, but it goes without saying that they may be separately formed and joined together when the frame is assembled.

The leaf spring member 3 of this embodiment is formed by bending a spring metal plate material, and has a curved concave portion on the upper portion.
It is formed in a substantially M-shaped cross section having 31 and two leg portions 32, 32 at the bottom. This leaf spring member 3 has its leg portion 32.
・ In the state that 32 is fitted to the locking step 23, the piece projection 21
The curved recess 31 is arranged in the locking portion 22 between the two 21, and the curved recess 31 pushes up the shaft recess 11 of the rotary shaft member 1 by the elastic force of the spring, so that the lock portion 22 and the rotary shaft member 1 are attached in the separating direction. It is energized.

Due to the pushing-up biasing force of the leaf spring member 3, the curved concave portion 31 of the leaf spring member 3 and the shaft concave portion 11 of the rotary shaft member 1 and the lower portion of the inner wall of the rotary shaft member 1 and the bearing holes 20, 20 are moved. They come into contact with each other in a biased state, and when the temple T is opened and closed, each member slides with a required sliding resistance. In the present embodiment, this sliding resistance is utilized to obtain the desired temple opening / closing resistance (again).

Moreover, the screwless hinge of this embodiment utilizes the pushing-up biasing force of the leaf spring member 3 at the same time,
It also prevents the rotation shaft member 1 from slipping off the shaft. That is, as described above, the curved recess 31 of the leaf spring member 3 and the rotary shaft member 1 are arranged.
Since the shaft recess 11 is always in contact with the shaft recess 11 in a biased state, even if an external force is applied to the rotary shaft member 1 from the side in the axial direction, the curved recess 31 of the leaf spring member 3 causes the rotary shaft member 1 to rotate. The rotary shaft member 1 is not caught in the bearing holes 20 and 20 by being caught in the shaft recess 11.

As described above, in the screwless hinge of this embodiment, the leaf spring member 3 is used not only to obtain temple opening / closing resistance (again), but at the same time, to prevent the pivot shaft from slipping off. Since it has also been realized, it was possible to construct an eyeglass hinge with a simple structure without using any screw parts. Therefore, unlike the conventional product, it is not necessary to perform the troublesome "screw screw adjustment" and the "screw loosening" is not bothered. Moreover, even if the rotary shaft member 1 and the bearing hole 20 are worn due to long-term use, the leaf spring member 3 always abuts them in a biased state, so that the bearing portion is large like the conventional product. There will be no rattling, and the temple opening / closing resistance (again) will be kept almost constant.

In addition, in the screwless hinge of the present embodiment, the leaf spring member 3 itself that exerts the pushing-up biasing force does not fall off the locking portion 22 of the bearing member 2. This is because, in the present embodiment, the leg portions 32, 32 of the leaf spring member 3 are fitted into the locking step 23 formed in the locking portion 22, and the upper portion of the leaf spring member 3 is curved. This is because the concave portion 31 is provided and the rotary shaft member 1 is supported in the biased state by the concave portion of the curved concave portion 31. Even if an external force is applied to the leaf spring member 3 from the lateral direction to some extent, the leaf spring member 3 does not easily fall off.

The provision of the locking step 23 in the locking portion 22 not only secures the position fixing of the leaf spring member 3 as described above, but at the same time, the leg of the leaf spring member 3 is also fixed. It is also possible to limit the expansion deformation of the parts 32. When the substantially M-shaped leaf spring member 3 exerts a pushing-up urging force, the leg portions 32 and 32 are deformed so that the leg portions 32 and 32 spread apart, as a reaction force. However, the locking step 23 sandwiches the leg portions 32, 32 to prevent the expansion deformation. This makes it possible to effectively and stably exert the pushing-up biasing force of the leaf spring member 3 for a long period of time.

Even if the legs 32, 32 are expanded and deformed, the required pushing-up biasing force can be sufficiently obtained, and the leaf spring member 3 can be sufficiently prevented from falling off only by the concave portion of the curved concave portion 31. If it is possible, the locking step 23 does not necessarily have to be provided with the locking step 23. In this case, the locking step
Since 23 is not provided, the manufacturing process is simplified and the manufacturing cost can be further reduced.

Further, in the above embodiment, a bent portion 12 bent about 180 ° is provided near the rear end of the rotary shaft member 1, and the bent portion 12 and the base end of the temple T are brazed and joined. Then, the rotating shaft member 1 and the temple T are joined together, but as shown in FIG. 5, about 90 ° near the rear end of the rotating shaft member 1.
It is also possible to form a bent portion 12 ′ that has been subjected to bending and to integrally form the bent portion 12 ′ and the base end portion of the temple T ′ made of a round metal wire. In this case, if a stopper 24 for supporting the temple T ′ is provided at the tip of the bearing member 2 in a protruding manner, the outward expansion operation of the temple T ′ can be easily limited within a predetermined angle. Is possible.

[Second Embodiment] A screwless hinge of a second embodiment shown in FIGS. 6 to 8 is provided between a rotary shaft member 1 pivotally supported by a bearing member 2 and a leaf spring member 3. The greatest feature is that the pin member 4 is detachably interposed. By employing this pin member 4, the assembling and disassembling work of the hinge without screws is facilitated.

As shown in FIG. 7, the pin member 4 of the present embodiment.
A front split portion 41 is formed at the tip, and a small diameter portion 42 having a smaller diameter than the front split portion 41 and the rear end portion 43 is formed in the center. The pin member 4 is arranged in the shaft recess 11 of the rotary shaft member 1 that is pivotally supported in the bearing hole 20 of the bearing member 2 and the locking portion 22 between the piece protrusions 21 of the bearing member 2. It is interposed between the leaf spring member 3 and the push-up biasing force of the leaf spring member 3 is transmitted to the rotary shaft member 1 via the pin member 4 (see FIGS. 6 and 8).

The pin member 4 is used to rotate the rotary shaft member 1.
The axial recess 11 of the rotary shaft member 1 is prevented from slipping out of the bearing hole 20 by engaging the axial recess 11 of the rotary shaft member 11. The small-diameter portion 42 of the member 4 is slid with a desired sliding resistance to obtain a temple opening / closing resistance (adult).

In the present embodiment, the pin member 4
Since the cylindrical small-diameter portion 42 is urged into contact with the rotary shaft member 1, the axial recess 11 of the rotary shaft member 1 is formed to have an arcuate longitudinal cross-section. Even in this case, since the pin member 4 is always urged toward the shaft recess 11,
The pin member 4 is elastically stabilized at the smallest diameter portion of the shaft recess 11 having an arcuate vertical cross section, and the rotary shaft member 1 does not easily come off.

As described above, in this embodiment,
Since the tip split portion 41 is formed at the tip of the pin member 4, if the tip split portion 41 is compressed to reduce the outer diameter of the tip split portion 41, the rotation shaft member 1 and the leaf spring member 3 are separated. Pin member 4 between
Can be easily inserted or the pin member 4 can be removed from between them, and the assembling / disassembling work of the screwless hinge can be easily performed.

The leaf spring member 3 of the present embodiment is formed in a substantially M-shaped cross section as in the first embodiment described above, but in the present embodiment, the leg portion of the leaf spring member 3 is formed. 32
The 32 is laid sideways so that it runs parallel to the piece projections 21 of the bearing member 2 and is arranged in the locking portion 22. In the present embodiment, the leg portions 32 of the leaf spring member 3 are formed by these piece protrusions 21.
The expansion deformation of the leg portions 32, 32 is restricted with the 32 sandwiched therebetween so that the pushing-up biasing force of the leaf spring member 3 can be effectively exerted.

Further, in the present embodiment, the piece projection 21.
The locking portion 22 between the two 21 is not provided with a locking step for fitting the leg portions 32, 32 of the leaf spring member 3. However, the leaf spring member 3
Will be sandwiched between the piece projections 21 and 21, and at the same time, will be supported between the front split portion 41 and the rear end portion 43 of the pin member 4,
The leaf spring member 3 will not fall off unless the pin member 4 is removed. In other words, this pin member 4
The leaf spring member 3 is prevented at the same time as preventing the pivot shaft member 1 from slipping off.
It also prevents the dropout of.

The embodiment which is a specific example of the present invention is constructed as described above, but the present invention is not limited to this embodiment, and various modifications can be made within the scope of the claims. Is possible.

For example, in the above embodiment, the rotary shaft member 1
Is provided on the temple T side and the bearing member 2 is provided on the end piece E side. However, it is not limited to this, of course, and conversely, the rotary shaft member 1 is provided on the end piece E side, The bearing member 2 may be provided on the temple T side. It can be selected in consideration of the design of the entire spectacle frame.

Further, in the above embodiment, the leaf spring member 3 is formed in a substantially M-shaped cross section.
Need only be capable of urging the shaft recess 11 of the rotary shaft member 1 in the radial direction of the shaft between the piece projections 21, 21.
May be formed in another cross-sectional shape such as a substantially Z shape, or the leaf spring member 3 may be formed of a synthetic resin material having elasticity. Further, the same applies to the pin member 4, and the front division portion 41 is pressed and contracted to reduce the front division portion 41.
Any material can be used as long as it can reduce the outer diameter, and a synthetic resin material can also be used.

[0035]

As described above with reference to the embodiments, in the screwless hinge according to the present invention, not only the temple opening / closing resistance (agaki) is obtained by utilizing the elastic force of the leaf spring member. At the same time, the rotation shaft is prevented from coming off, so that it is possible to provide an eyeglass hinge having a simple structure that requires no screw parts. Therefore, it is not necessary to perform the troublesome "screw screw adjustment" as in the conventional product, and the "screw loosening" is not bothered. Moreover, even if the rotating shaft member and the bearing hole wear due to long-term use, the leaf spring member always abuts them in a biased state, so there is a large amount of rattling in the bearing part as in conventional products. It does not occur, and the temple opening and closing resistance (again) is kept almost constant. Further, since the structure is very simple, it is possible to provide an eyeglass hinge which is very easy to manufacture and inexpensive.

[Brief description of the drawings]

FIG. 1 is an overall plan view showing an eyeglass frame to which a screwless hinge of a first embodiment according to the present invention is applied.

FIG. 2 is a perspective view showing an overall configuration of a hinge without screws according to the first embodiment.

FIG. 3 is a perspective view showing a state in which the periphery of the leaf spring member of the hinge without the screw is broken.

FIG. 4 is a partial side view of the hinge without the screw.

FIG. 5 is a perspective view showing a modified example of the hinge without screws.

FIG. 6 is a perspective view showing an overall configuration of a hinge without screws according to a second embodiment of the present invention.

FIG. 7 is an overall perspective view of the pin member of the hinge without the screw.

FIG. 8 is a partial side view of the hinge without the screw.

[Explanation of symbols]

 F Front frame E End piece 1 Rotating shaft member 11 Shaft recess 12 Bent part 2 Bearing member 20 Bearing hole 21 Piece protrusion 22 Locking part 23 Locking step 3 Leaf spring member 31 Curved recess 32 Leg part 4 Pin member 41 Preliminary allocation Part 42 Small diameter part

Claims (4)

[Claims] 1. A hinge for a spectacle frame, in which an ear hook temple T is hingeably foldably connected to the carry-out side end portions of the end pieces E provided at the left and right ends of the spectacle front frame F. The rotation shaft member 1 is axially supported by the bearing member 2 provided with the projections 21.
A shaft recess 11 is formed in a portion sandwiched by 21 and by biasing the shaft recess 11 in the radial direction of the shaft between the piece projections 21 and 21, the rotary shaft member 1 is pulled out of the bearing member 2. At the same time, the rotation shaft member 1 and the bearing member 2 are made to slide with a desired sliding resistance, and a screwless hinge for an eyeglass frame. 2. A hinge for a spectacle frame, in which an ear hook temple T is hinged to be freely foldable at end portions on the carry-out side of end pieces E provided at both left and right ends of a spectacle front frame F. A rotary shaft member 1 having a shaft recess 11 formed on at least a part of the shaft peripheral surface and joined to the end of the temple T or the end piece E at a bent portion 12 formed near the rear end; A bearing member 2 provided with two piece projections 21, 21 each having a bearing hole 20, 20 into which the member 1 is fitted and joined to the end of the end piece E or the temple T; It is arranged in the locking portion 22 formed at the root between the piece projections 21 and 21, and the locking portion 22 and the bearing hole
And a leaf spring member 3 for urging the rotary shaft member 1 inserted into each of 20 and 20 in a direction away from each other. The leaf spring member 3 urges the shaft recess 11 of the rotary shaft member 1. This prevents the rotary shaft member 1 from slipping out of the bearing hole 20, and at the same time, allows the shaft recess 11 of the rotary shaft member 1 and the leaf spring member 3 to have a desired sliding resistance when the temple T is opened and closed. A screwless hinge for eyeglass frames, which is characterized by sliding. 3. A leaf spring member (3) for urging the locking portion (22) of the bearing member (2) and the rotary shaft member (1) in a direction away from each other, a curved concave portion (31) at the upper portion, and two leg portions (32) at the lower portion. By forming a locking step 23 at a required position of the locking portion 22 of the bearing member 2, the leg portions 32, 32 of the leaf spring member 3 are engaged. The plate spring member 3 is fitted to the stop 23 to fix the position of the leaf spring member 3 to the locking portion 22, and at the same time, the expansion deformation of the legs 32 is restricted to obtain a desired elastic biasing force. The hinge without screws for eyeglass frames according to claim 2. 4. A spectacle frame hinge that foldably hinges an ear hanging temple T to end portions on the carry-out side of end pieces E provided at the left and right ends of the spectacle front frame F, the hinges being provided near the tips. A rotary shaft member 1 having a shaft recess 11 formed on at least a part of the shaft peripheral surface and joined to the end of the temple T or the end piece E at a bent portion 12 formed near the rear end; A bearing member 2 provided with two piece projections 21, 21 each having a bearing hole 20, 20 into which the member 1 is fitted and joined to the end of the end piece E or the temple T; It is arranged in the locking portion 22 formed at the root between the piece projections 21 and 21, and the locking portion 22 and the bearing hole
A leaf spring member 3 for urging the rotary shaft member 1 inserted into the 20.20 in a direction away from each other; a front split portion 41 formed at the tip and a small diameter portion 42 formed in the center And a pin member 4 that is interposed between the shaft recess 11 of the rotating shaft member 1 and the plate spring member 3 so as to be easily attached and detached, and is rotated by the plate spring member 3 via the pin member 4. The shaft recess 11 of the shaft member 1 is biased to prevent the rotary shaft member 1 from slipping out of the bearing hole 20, and at the same time when the temple T is opened and closed, the shaft recess 11 of the rotary shaft member 1 and the pin concerned. A screwless hinge for an eyeglass frame, characterized in that it can slide with the small diameter portion 42 of the member 4 with a desired sliding resistance.