JP2008203866A - Temple joint structure of spectacle frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide temple joint structure which prevents a folded temple does not flop to be opened and to provide temple joint structure having the same function with a spring hinge. <P>SOLUTION: The temple joint structure couples a temple 2 to each of rim locks 1 provided on both sides of a front portion of spectacles through a joint shaft so that the temple 2 can be folded, wherein three or more recessed grooves are formed on a temple end surface around the joint shaft, an engagement piece 11 engaged with the recessed grooves with energized spring force is fitted to one of the rim locks, and the recessed grooves on both sides among the three or more recessed grooves are formed at a position where the temple is folded and a position where the temple is opened. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  [Technical Field] The present invention relates to a joint structure for connecting spectacles frames so that the temples can be folded and having a structure in which the folded temples do not flutter.

  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, although the vine of glasses is generally attached so that it can fold through joints, such as a hinge, it connects with the front-end | tip of the armor provided in the both sides of the front part through the said joint.

  FIG. 5 shows the appearance of a conventional general metal eyeglass frame. Yoroi (b) and (b) are brazed to both sides of the front part (b), and the cranes (c) can be folded via hinges (d) and (d) on the yoroi (b) and (b). ) And (c) are connected. The front part (a) has both rims (e) and (e) connected by a connecting member (f), and a nose pad (g) and (g) below the connecting member (f) Is installed. Therefore, put both nose pads (g) and (g) on both sides of the nose to support the front part (a) and listen to the L-shaped resin modern (not shown) inserted into the tip of the vine. It is possible to put on glasses by locking to.

  By the way, in the hinge (d) to which the above-described crane (c) is attached, both butterfly pieces are connected via shaft screws, and each hinge piece is brazed to the armor (b) and the crane (c), respectively. FIG. 6 is an external view (a plan view and a front view) showing the hinge (d) of a conventional eyeglass frame. As shown in the figure, the hinge has a structure in which the hinge pieces (H) and (R) can be bent by being connected by a shaft screw (N). The surface (le) is brazed to the armor (ro), and the joint surface (le) of the other butterfly piece (chi) is brazed to the crane (c).

  Accordingly, the crane (c) can be folded through the hinge screw (d). And the hinge (d) is engaged with the convex part of the butterfly piece (re) having the top (wa) fitted in the concave part of the butterfly piece (h) having both pieces (o) and (e). Thus, the butterfly pieces (H) and (R) can rotate around the shaft screw (N) without rattling.

  However, the shaft screw (nu) of the hinge (d) connecting the temples (c) of the glasses is easily loosened by opening and closing the temples (c). In addition, the sliding surface of the hinge (d) is worn with the opening / closing operation, and the crane (c) generally has a backlash. As a result, the crane (c) enters a fluttering state without any resistance during the opening / closing operation, and the stability of the crane (c) is lost.

  Thus, the conventional eyeglass frame crane joint structure has the above-mentioned problems. The problem to be solved by the present invention is this problem, and provides a crane joint structure in which a once-folded crane is prevented from flapping and opening. Moreover, the crane joint structure provided with the function similar to a spring hinge is provided.

  In the crane joint structure according to the present invention, a joint shaft is provided at the end of the armor, and the crane is connected to the joint shaft. When wearing glasses, the vine is opened, but a stopper is provided to stop at a predetermined position. And when folded, it is comprised so that it may stop in that position so that it may not flutter.

  By the way, the end surface of the vine is formed with a plurality of smooth concave grooves around the joint axis. An engagement piece is attached to the armor side, and the engagement piece can be engaged with the concave groove. Here, a spring force is applied to the engaging piece to engage the concave groove, so that the crane is lightly locked at the folded position. On the other hand, it is also possible to provide a groove on the end face of the armor and attach an engagement piece on the temple side. Also in this case, the engaging piece is engaged with the concave groove in a state where the temple is folded, and the temple is lightly locked.

  Furthermore, the position of the stopper is set so that it can be pushed slightly outward from the state in which the vine is open, but a projection is provided in which the engaging piece moves backward before it hits the stopper. For this reason, the spring force acting on the engagement piece by climbing on the convex portion increases, and acts as a force to push the temple back inward. That is, it has the same function as a conventional spring hinge.

  In the crane joint structure of the present invention, the folding operation is smooth without biasing the crane by biasing the spring force to the end surface or the end surface of the temple via the engagement piece. And the folded vine is fluttering and doesn't open by itself. That is, since three or more concave grooves are formed on the end face of the vine or the end face of the armature, and the engaging piece that urges the spring force is engaged with the concave groove, The open vine is stabilized and the stability with appropriate resistance to opening and closing operations is realized. In other words, the effect of satisfying the sizzle feeling can be obtained from the opening / closing operation of the vine.

  Therefore, even if the joint shaft and the shaft hole are worn slightly, even if the jointing surface between the armor and the vine is worn slightly, the vine does not rattle. On the other hand, the vine is opened when wearing glasses, but when it is pushed slightly outward from that state, it has the same function as the conventional spring hinge joint by riding the engaging piece on the convex part and retracting it I can do it. That is, when the engagement piece moves backward, a spring force is applied to generate a force that pushes the temple back inward.

  FIG. 1 shows an embodiment of a crane joint structure according to the present invention. In FIG. 1, reference numeral 1 denotes an armature, 2 denotes a temple, and 3 denotes a front portion. The basic form of the eyeglass frame is the same as that shown in FIG. 5. The armor 1 is fixed to the outside of the front part 3, and the temple 2 is connected to the tip of the armor 1. The crane 2 is turned around the joint shaft 4 and folded.

  FIG. 1 (a) shows a case where the temple 2 is opened, extends almost perpendicularly to the front portion 3, and wears glasses. (b) shows a case where it is bent by 15 ° from the open state, (c) shows a case where it is bent by 30 °, and (d) shows a case where it is bent after being bent by 90 °. In this way, the vine 2 pivots about the joint shaft 4 and can move over about 90 ° from the open state of (a) to the folding of (d).

  FIG. 2 shows the case where the armor 1 and the temple 2 are separated from each other. However, the armor 1 has two joint pieces 5a and 5b with a space 6 between them at the tip, and the joint is also attached to the temple end. A frame 7 is provided. The joint piece 7 of the crane 2 is fitted in the space 6 formed by the joint pieces 5 a and 5 b of the above-described armor 1 and is connected by the joint shaft 4. Therefore, the joint piece 5a of the alloy 1 is provided with a seat into which the head of the joint shaft 4 fits, the joint piece 5b has a screw hole 8 into which the joint shaft 4 is screwed, and the joint piece 7 of the crane 2 has a shaft hole. 9 is formed.

  Therefore, the joint piece 7 of the temple 2 is fitted in the space 6 formed between the joint pieces 5 a and 5 b of the armor 1 and connected by the joint shaft 4. In this case, the engagement piece is attached to the alloy 1. A shaft hole 10 extending in the horizontal direction is provided at the bottom of the space 6 sandwiched between both joint pieces 5 a and 5 b of the armor 1, and an engagement piece is attached to the shaft hole 10. A spring force is applied to the engagement piece, and a part of the engagement piece protrudes from the entrance of the shaft hole 10.

  FIG. 3 shows the engagement piece 11 protruding from the entrance of the shaft hole 10. The engagement piece 11 forms a sphere and connects the shaft 12. The shaft 12 is fitted into the coil hole of the coil spring 13 accommodated in the shaft hole 10, and the engagement piece 11 is biased by a spring force. That is, a spring force that causes the engagement piece 12 to protrude from the entrance of the shaft hole 10 is exerted. As a result, the engagement piece 11 is engaged with the concave grooves 14a, 14b, 14c, 14d formed on the end surface of the joint piece 7 of the temple 2. Can be combined.

  Thus, the end surface of the joint piece 7 of the temple 2 is formed with the concave grooves 14a, 14b, 14c, and 14d, and the engaging piece 11 is engaged with the respective concave grooves 14a, 14b, 14c, and 14d so that the temple 2 is engaged. The degree of opening is regulated. That is, when the engaging piece 11 is engaged with each of the concave grooves 14a, 14b, 14c, and 14d, the temple 2 is lightly locked at a predetermined angle. FIG. 1A shows a state where the engaging piece 11 is engaged with the concave groove 14a, and FIG. 1B shows a state before the engaging piece 11 engages with the concave groove 14b. (C) is a case where the engaging piece 11 is engaged with the concave groove 14b, and (d) is a case where the engaging piece 11 is engaged with the concave groove 14d.

  A small convex portion is formed between the concave grooves 14a, 14b, 14c, and 14d, and when the engaging piece 11 moves from the concave groove 14a to the concave groove 14b, the convex portion must be overcome, and it is overcome. In this case, the engagement piece 11 is retracted by the distance m and the coil spring 13 is compressed. For this purpose, the engaging piece 11 is positioned by engaging with the concave grooves 14a, 14b, 14c, 14d, and the temple 2 is lightly locked.

  FIG. 4 shows a case in which it is slightly pushed outward from the state of FIG. When the stopper 16 provided at the end of the temple abuts against the contact surface 17 formed on the end of the temple, the temple 2 stops. And the convex part 15 is formed in the outer side of the ditch | groove 14a formed in the joint piece 7, and if the temple 2 is pushed open in this way, the engagement piece 11 will ride on this convex part 15. FIG. As a result, the spring force acting by retreating the engagement piece 11 is increased, and a force for returning the temple 2 to the original position (the state shown in FIG. 1a) is generated. That is, a function as a conventional spring hinge can be provided.

  By the way, the engaging piece 11 that engages with the concave grooves 14a, 14b, 14c, and 14d is not limited to the spherical body in which the spring force of the coil spring 13 is urged, and a leaf spring can be attached. Engagement pieces that engage with the concave grooves 14a, 14b, 14c, and 14d with spring force can be integrally formed on a part of the leaf spring.

  Further, in the described embodiment, the engagement piece 11 is attached to the end of the armature, and the concave grooves 14a, 14b, 14c, and 14d are formed in the joint piece 7 of the temple 2. On the contrary, the engagement piece 11 is engaged to the temple side. A piece may be attached and a concave groove may be formed in the joint piece on the armor side. Even with such a structure, the degree of opening and closing of the vine can be regulated.

The Example which shows the crane joint structure which concerns on this invention. The separation state of the armor and the crane which comprise the crane joint structure of this invention. An engagement piece biased by a spring force. When the vine is pushed slightly outward from the open state. General glasses frame. Conventional crane joint structure.

Explanation of symbols

1 Yoroi 2 Tsuru 3 Front 4 Joint shaft 5 Joint piece 6 Space 7 Joint piece 8 Screw hole 9 Shaft hole
10 Shaft hole
11 Engagement piece
12 axes
13 Coil spring
14 groove
15 Convex
16 Stopper
17 Contact surface

Claims (5)

In the crane joint structure that is connected so that the temple can be folded via the joint shaft to the joints provided on both sides of the front part of the glasses, three or more concave grooves are formed on the end surface of the temple centering on the joint shaft. Is attached with an engaging piece for energizing and energizing the spring with spring force, and among the three or more grooves, the grooves on both sides of the groove are folded and the temple is opened. A crane joint structure characterized by being provided at a different position. In the crane joint structure that is connected to the armor provided on both sides of the front part of the glasses so that the crane can be folded via the joint shaft, the end surface of the alloy is formed with three or more concave grooves around the joint shaft. Is attached with an engaging piece for energizing and energizing the spring with spring force, and among the three or more grooves, the grooves on both sides of the groove are folded and the temple is opened. A crane joint structure characterized by being provided at a different position. 3. A crane joint structure according to claim 1, wherein a convex portion is formed in which the engaging piece moves backward so that the crane is pushed back when the crane is pushed slightly outward from the open state. The crane joint structure according to claim 1, wherein the engagement piece is formed at a tip of a leaf spring. The crane joint structure according to claim 1, wherein the engaging piece is a substantially spherical body, and the spring force of the coil spring is biased.

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