JP2007240680A - Temple joint structure for spectacle frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temple joint structure, capable of opening and closing operation without causing looseness in a temple attached to both sides of a front part of spectacles indefinitely. <P>SOLUTION: In the temple joint structure, a joint part 11, comprising an upper side piece 12 and a lower side piece 13 double-folded, is attached to wrapparound endpieces 7, 7 of both the sides of the front part, a base part 15 is sandwiched by a joint part 11 to be constituted of a shape memory alloy, urging elastic force on the upper-side piece 12 and the lower-side piece 13 under a normal temperature, projecting an upper shaft 17 on the upper side piece 12, projecting a lower shaft 18 on the lower side piece 13, and pivotally supporting to fit the upper and lower shafts in a shaft hole 16 provided on the base part 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joint structure that is attached to both sides of a front portion of eyeglasses and connected so that a vine can be folded without any backlash.

  Glasses can be folded with vines on both sides of the front. That is, when the glasses are put on the face, both the temples are opened, and when the glasses are removed from the face, both the temples are folded and closed. By the way, the hinge connecting the vines of the glasses is very small, and it takes a great burden to support a long vine. Accordingly, the sliding surface of the hinge is worn with the opening / closing operation, and the stability is impaired, for example, the heel is rattled and the glasses worn are displaced.

  In particular, since recent glasses frames are preferred to be light and excellent in springiness, titanium is frequently used as a material that satisfies this requirement. The hinge is often made of titanium, and the wear of the sliding surface is particularly remarkable in this titanium hinge. And with the titanium hinge, the machined sliding surface is a fine uneven surface like a casting, that is, it is not a smooth surface. Absent. That is, smooth sliding cannot be obtained.

  Thus, conventionally, measures have been taken to prevent wear by interposing a washer on the sliding surface of this small hinge to provide smooth sliding. Japanese Patent Application Laid-Open No. 2004-138718 discloses a “glass frame folding joint and hinge and washer” in which a cylindrical portion of a washer is fitted into a shaft hole of one butterfly piece meshing with each other, and another cylindrical tube of a washer is inserted into the cylindrical portion. It is assembled with the other butterfly piece and the shaft screw. However, the work of attaching a small washer to a small hinge and assembling it is not easy, and the productivity deteriorates. Of course, the production cost is high.

In addition, the “glass frame joint structure” disclosed in Japanese Patent Application Laid-Open No. 2002-207198 is provided with a bearing at the end of the armor and a shaft having a circular collar formed in a shaft hole of the bearing so that the shaft can be rotated. The vine can be opened and closed along the slide groove penetrating outward from the shaft hole, and a part of the guide piece forming the slide groove has a notch portion of a size through which the vine is inserted, Then, the pressing portion is brought into contact with the outer peripheral surface of the shaft portion to urge the spring force. Therefore, the crane does not rattle during the folding operation, but the structure becomes complicated and the cost is inevitably high.
“Tail folding joint, hinge and washer of eyeglass frame” and “washer” according to Japanese Patent Application Laid-Open No. 2004-138718 “Glass frame crane joint structure” according to Japanese Patent Application Laid-Open No. 2002-207198

  Thus, the conventional crane joint structure has the above-mentioned problems. The problems to be solved by the present invention are these problems, and it is possible to maintain a stable folding operation without any looseness of the vines, since the manufacturing and assembling costs are extremely low due to the extremely simple structure and the vines are not rattling. Providing a frame joint structure for eyeglass frames.

  The crane joint structure according to the present invention has a structure in which a base portion of a crane is sandwiched between joint portions provided at the end of the armor. That is, the joint portion is configured by folding the upper piece and the lower piece in half, and the base is sandwiched between the upper piece and the lower piece. Here, a shape memory alloy is used for the joint portion, and is sandwiched in a state where an elastic force is applied to the base portion of the vine at normal temperature. Alternatively, the joint portion can be formed of a stainless steel material or an alloy spring material, and the joint portion made of any material has a structure in which the base portion is sandwiched with an elastic force applied.

  A shaft hole is provided in the vine base, and a shaft protrudes from an upper piece and a lower piece that are folded in half. The shaft is fitted and supported in the shaft hole of the base, but conversely, shaft holes can be formed in the upper piece and the lower piece, and the shaft can be provided on the base side. The joint portion made of the shape memory alloy folded in half is softened by being heated or cooled, and the vine is attached with the opening being opened and the base portion being sandwiched therebetween. Then, a part of the joint part folded in half or the end of the end part functions as a stopper, and the degree of opening when the vine opens is restricted. And a washer may be interposed between the upper piece and the lower piece that sandwich the base of the vine.

  The crane joint structure according to the present invention has a structure in which the base of the crane is sandwiched between joints provided on the armor side. Then, the shaft protruding from the upper piece and the lower piece of the joint part folded in two fits into the shaft hole provided in the base part and is pivotally supported, and the vine can turn around the axis to open and close. Since the joint portion is made of a shape memory alloy or the like, the base portion is sandwiched at room temperature and the elastic force is urged, so that the vine can be folded without any backlash.

  That is, even if the sliding surface of the base portion and the sliding surface of the joint portion are somewhat worn, the elastic force sandwiching the base portion does not greatly decrease. If the joint part made of shape memory alloy is heated in half or cooled, the joint part becomes soft and the base part can be sandwiched between the openings, and the installation work of the vine is easy. is there. Of course, the cost is reduced by simplifying the structure.

  FIG. 1 shows glasses having a crane joint structure according to the present invention. The glasses shown in the figure have a structure in which the lens 1 is held by a half rim portion 2 positioned on the upper side of the lens 1 and a water thread 3 stretched on the lower side, and is generally referred to as a nyroll frame. Half rim parts 2 and 2 are provided with a connecting part 4 at the center and provided with outer parts 7 and 7 on the outer side, and an auxiliary connecting part 5 is overlapped on the back side of the connecting part 4 to increase the strength of the central part. ing.

  The auxiliary connecting portion 5 has a substantially portal shape with arms 6 and 6 extending on both sides, and the lens 1 is held by fixing the tip of the water thread 3 to the tip of the arm and the armor portion 7. A curved leg 8 is brazed to the arm 6, and a nose pad 9 is attached to the tip of the leg. And the temples 10 and 10 are attached via the joint parts 11 and 11 so that the temples 10 and 10 can be folded up on the both ends 7 and 7 of the front part of the spectacles comprised in this way.

  By the way, the joint part 11 is fixed to the tip of the armor part 7, and the temple 10 is attached to the joint part 11. The joint portion 11 has an attachment structure in which a pin 14 is inserted into a hole at the end of the end portion 7 and caulked and then brazed. And the crane 10 is attached to this joint part 11, but this joint part 11 has comprised the two-fold form of the upper piece and the lower piece, and the base of the crane 10 is sandwiched between the upper piece and the lower piece. This constitutes a joint structure.

  FIG. 2 is an embodiment showing a crane joint structure. The joint portion 11 is folded in half to have an upper piece 12 and a lower piece 13, and the upper piece 12 is long and is crimped by the tip of the end portion 7 and the pin 14 and brazed so as not to move. Yes. Therefore, the joint portion 11 is fixed to the tip of the end piece 7.

  And the base part 15 of the crane 10 is connected with this joint part 11 so that rotation is possible, and the base part 15 is pinched | interposed by the upper piece 12 and the lower piece 13 for that purpose. However, since the base portion 15 is detached from the joint portion 11 in a state of being sandwiched, the upper shaft 17 protruding from the upper piece 12 is fitted into the shaft hole 16 provided in the base portion 15 and protruded from the lower piece 13. The lower shaft 18 is fitted.

  Therefore, the base 15 does not detach from the joint portion 11, rotates about the upper shaft 17 and the lower shaft 18, and the temple 10 can be opened and closed smoothly. And the stopper 19 is formed in the front-end | tip of the base 15, This stopper 19 abuts on the front-end | tip of the armoring part 7, and stops, and the opening degree of the temple 10 is controlled.

  Although FIG. 3 shows the joint part 11 alone, this material is made of a shape memory alloy, and the lower piece 13 is slightly offset toward the upper piece 12 as shown in FIG. The base 15 of the crane 10 cannot be sandwiched between 20. That is, it is memorized in this state, and when the joint portion 11 is heated to a certain high temperature or cooled to a certain temperature, the opening 20 can be opened.

  Therefore, the upper shaft 17 and the lower shaft 18 can be fitted into the shaft hole 16 by simply sandwiching the base portion 15 with the joint portion 11 softened. When the joint portion 11 reaches room temperature, an elastic force (spring force) that restores the state of FIG. 3 is generated, and the base portion 15 is sandwiched by this elastic force. Therefore, no gap is generated between the base portion 15 and the upper piece 12 and the lower piece 13, and no rattling occurs when the temple 10 is opened or closed. Even if it is somewhat worn with use, the elastic force is not lowered and no gap is formed.

  FIG. 4 shows another pair of glasses having a crane joint structure according to the present invention. The basic form of the glasses is the same as that shown in FIG. 1, but both the half rims 21, 21 constituting the front part are connected by a connecting member 22. However, the end portions 7 and 7 are formed continuously outside the half rims 21 and 21.

  By the way, the joint portion 11 is brazed to the end of the armor and has an upper piece 12 and a lower piece 13 that are folded in half using a shape memory alloy as in the joint portion 11 shown in FIG. ing. Here, when the joint portion 11 is brazed to the armor portion 7, the base plating is applied. Then, the base 15 of the temple 10 is sandwiched between the upper piece 12 and the lower piece 13 and the elastic force is urged so as not to rattle.

  Similar to the joint structure shown in FIG. 2, an upper shaft 17 projects from the upper piece 12 of the structural joint portion 11, and a lower shaft 18 projects from the lower piece 13. The upper shaft 17 and the lower shaft 18 are fitted and supported in the shaft hole 16. On the other hand, as shown in FIG. 5, the upper shaft hole 23 can be formed in the upper piece 12 of the joint portion 11, and the lower shaft hole 24 can be formed in the lower piece 13. In some cases, the upper shaft 25 and the lower shaft 26 are pivotally supported by being fitted into the vertical shaft holes 23 and 24. Here, the upper shaft 25 and the lower shaft 26 can protrude into the upper and lower surfaces by press-fitting a pin into the hole in the base.

  By the way, a shape memory alloy is generally used as the material of the joint part 11, but it is also possible to use a stainless steel material or an alloy spring material excellent in spring property. The shape has an upper piece 12 and a lower piece 13 as shown in FIG. 3, and the base 15 of the vine can be fitted with the upper body with the opening 20 opened. Of course, if the joint portion 11 is made of stainless steel, the upper portion 12 and the lower portion 13 are pushed open to fit the base portion 15. A washer may be interposed between the base 15 and the upper and lower pieces 12 and 13.

Glasses provided with the joint structure of the present invention. The Example which shows the crane joint structure which concerns on this invention. The example of the joint part which comprises a joint structure. Glasses provided with the joint structure of the present invention. The other Example which shows the crane joint structure which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lens 2 Half rim part 3 Water thread 4 Connection part 5 Auxiliary connection part 6 Arm 7 Armor part 8 Leg 9 Nose pad
10 crane
11 Joint
12 Upper piece
13 Lower piece
14 pin
15 base
16 Shaft hole
17 Upper shaft
18 Lower shaft
19 Stopper
20 opening
21 half rim
22 Connecting members
23 Upper shaft hole
24 Lower shaft hole
25 Upper shaft
26 Lower shaft

Claims (6)

In the joint structure that attaches the vine so that it can be folded on both sides of the front part of the glasses, the joint part consisting of the upper and lower pieces folded in half is attached to the armor on both sides of the front part by caulking or brazing, etc. The joint is made of a shape memory alloy, and at normal temperature, the upper piece and the lower piece urge the elastic force to sandwich the base of the vine, the upper piece projects the upper shaft and the lower piece A temple joint structure for spectacles, characterized in that a shaft protrudes and the upper and lower shafts are fitted into shaft holes provided in a base portion and supported. In the joint structure that attaches the vine so that it can be folded on both sides of the front part of the glasses, the joint part consisting of the upper and lower pieces folded in half is attached to the armor on both sides of the front part by caulking or brazing, etc. The joint part is made of a shape memory alloy, and at room temperature, the upper piece and the lower piece urge the elastic force to sandwich the base of the vine, forming the upper shaft hole in the upper piece and the lower piece A temple joint structure for eyeglasses in which a lower shaft hole is provided, and an upper shaft and a lower shaft provided in a base portion are fitted and supported in these upper and lower shaft holes. 3. The temple joint structure for eyeglasses according to claim 1, wherein a stopper that contacts the tip of the armor when the temple is opened is formed at the tip of the base. 4. The glasses according to claim 1, wherein the joint portion is made of stainless steel, an alloy spring material, or the like, and the base portion of the vine is sandwiched between the upper piece and the lower piece to urge the elastic force. Claw joint structure. The spectacle joint structure of glasses according to claim 1, 2, 3, or 4, wherein the joint part is integrated with an armor. The temple joint structure for eyeglasses according to claim 1, 2, 3, 4, or 5, wherein a washer is interposed between an upper piece and a lower piece sandwiching the base portion of the temple.

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