JP2001142032A - Spring hinge device of spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring hinge device of spectacles which enables a user to easily carry out assembly work with a simple structure and to provide the spring hinge device of spectacles which is simple in the production of a cylindrical body and is made lighter in weight. SOLUTION: The spring hinge device for freely turnably mounting a temple 2 relative to a bracket 1 of spectacles consists of a hinge part 3 which is freely turnably mounted at the bracket 1, a bolt body 5 which is mounted at the hinge part 3, a spring body 4 which is mounted at the bolt body 5 and the cylindrical body 6 which is communicated and fixed to and with the temple 2 in the state of inserting the hinge part 3, the bolt body 5 and a spring body 4 therein. The spring body 4 is elastically supported between a head 52 of the bolt body 5 and a reduced diameter part 61 of the cylindrical body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to spectacles, and more particularly, to spectacles provided with a spring hinge device that functions during over rotation.

[0002]

2. Description of the Related Art A front frame and a temple constituting eyeglasses are connected to be openable and closable via hinges as a rotating mechanism. However, 90 from the closed state of the temple
When the door is opened further and further opened (hereinafter, for example, 9
A state where the temple is further opened from a state opened from 0 degrees, that is, a state where it is further moved from the stable holding state is referred to as “over-rotation”).

[0003] In order to solve this problem, a structure in which a coil spring or the like is incorporated in a hinge as a rotating mechanism has been developed. That is, the temple can be elastically expanded (over-rotated) by using the “spring hinge”. For example, Japanese Patent Application Laid-Open No. 7-3017
A spring hinge (spring hinge device) as disclosed in Japanese Unexamined Patent Publication No. 73-86 and Japanese Unexamined Patent Application Publication No. 8-286154 is one example.

In the former spring hinge device, a case is fixed to a vine of spectacles, and the case incorporates a hinge element, an abutment, a spring element, a pin element, a ring, and the like. The spring element is extrapolated to the pin element and has a structure that contributes to the return force of the vine by being resiliently pressed between the abutment and the ring. According to such a spring hinge device, the internal structure of the case is complicated, and the cost is increased because the case is manufactured by casting. In addition, the case must be fixed by welding to the temple, and there is a disadvantage that the temple is heated.

[0005] On the other hand, the latter spring hinge is a core rod having one end joined to the armor and the other end screwed to the temple, a spring externally arranged on the core rod, and restricting the movement of the spring. The structure comprises a locking member, a surface fitting, a washer, a lock nut, a spring cover, and a spring cover that covers them. Such a spring hinge needs to make a screw hole in the temple, so the temple needs a certain thickness,
Contrary to weight reduction. Further, excessive stress is likely to be applied to the small diameter core rod screwed to the temple when the temple is over-rotated. Further, the number of parts is large, the structure is complicated, and the number of steps for assembling is increased. Naturally, the cost is high and a failure is likely to occur.

[0006]

The present invention has been developed based on such a technical background. That is, an object of the present invention is to provide a spring hinge device for eyeglasses having a simpler structure and capable of easily performing an assembling operation. Yet another object is to provide a spectacle spring hinge device in which the manufacture of the cylinder is simple and light.

[0007]

Means for Solving the Problems The present inventors have conducted intensive studies on such problems, and as a result,
The present inventors have found that providing a reduced diameter portion for holding a spring in a cylindrical body can reduce the number of components, and have completed the present invention based on this finding.

That is, the present invention provides (1) a spring hinge device for rotatably mounting a temple to a bracket of spectacles, wherein a hinge portion rotatably mounted on the bracket and a hinge portion are provided. An attached bolt body, a spring body attached to the bolt body, and a cylindrical body connected and fixed to a temple with the hinge portion, the bolt body, and the spring body inserted therein, wherein the spring body is a bolt body. The present invention resides in a spring hinge device supported resiliently between a head and a reduced diameter portion of a cylindrical body.

(2) The spring hinge device according to the above (1), wherein the cylindrical body slides on the base of the hinge portion and slides.

Further, (3) the spring hinge device of (1), wherein the cylindrical body is formed by drawing.

Further, (4) the reduced diameter portion exists in the spring hinge device of (1), which is formed by drawing a cylindrical body.

Further, (5) the spring hinge device according to (1), wherein the cylindrical body is connected to the temple by bonding or screwing.

Further, (6) the spring hinge device according to the above (1), wherein the sliding contact area with the hinge portion of the cylindrical body is made thick.

Further, (7) the spring hinge device according to (1), which has a cutout recess for receiving the base of the hinge portion.

(8) A spring hinge device for rotatably mounting a temple to a bracket of eyeglasses, wherein the hinge portion is rotatably mounted on the bracket and the hinge portion is mounted on the hinge portion. Bolt body,
A spring body attached to the bolt body, and a cylindrical body bonded or screwed to the temple with the hinge portion, the bolt body, and the spring body inserted therein, and the spring body and the head of the bolt body A spring hinge device which is elastically supported between a reduced diameter portion formed by drawing of a cylindrical body and has a thick sliding contact area with the hinge portion of the cylindrical body. Here, the present invention can employ a configuration in which two or more selected from the above 1 to 7 are combined as long as the purpose is met.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings showing specific embodiments. FIG. 1 is a view showing the entire pair of glasses provided with the spring hinge device of the present invention, and shows a rotating state of a temple. As shown in the figure, in a full-rim spectacle having a rim frame R (connected by a bridge) for holding and fixing the periphery of each of a pair of lenses, a bracket 1 is provided on an outer peripheral edge of the rim frame R. A spring hinge device A is attached to the bracket 1, and the temple 2 is rotatable, that is, foldable via the spring hinge device A.

Here, "over-rotation" referred to in the following description is, as described above, more excessive than when the temple 2 is rotated 90 degrees in the left-right direction from the open state (P state). Shows that it is open outward. Further, “immediately before over-rotation” refers to this 90-degree opened state (P state).

In the bracket 1, one end is fixed to a rim frame R of spectacles, and the other end is
It is attached to a spring hinge device A described later. For this reason, a tongue piece 11 for hinge connection with the hinge portion 3 of the spring hinge device A is provided.
In detail). The tongue piece 11 of the bracket functions as a so-called support piece as a rotating mechanism of the temple 2. Structurally, the tongue piece 11 of the bracket is supported so as to sandwich the tongue piece 32 of the hinge portion inserted into the spring hinge device A.

The bracket 1 has a contact surface 12 with which the cylinder 6 of the spring hinge device A contacts, and the contact surface 12 is pressed by a pressing surface 62C which is the tip of the cylinder 6. By doing so, the temple 2 can rotate over a certain angle (this will be described in more detail in FIG. 10).

On the other hand, in the temple 2, a fitting portion 21 to be mounted on the cylinder 6 of the spring hinge device A is formed at the tip of the temple 2 as described later. In addition, this fitting portion 2
1 is provided with a locking projection 22 for fitting into and locking with the head (specifically, the notch groove 52A) of the bolt body 5 of the spring hinge device A. However, this fitting portion 21
Is not always necessary.

Incidentally, the temple 2 here has a structure which is not connected to a hinge portion acting as a rotating mechanism in a spring hinge device, as in the prior art (JP-A-8-286154). Therefore, unlike the related art, there is no need to provide a screw hole in the temple, and the temple 2 having a small thickness can be employed, and the weight can be reduced.

Incidentally, the spring hinge device A of the present invention comprises:
A hinge portion 3 that is interposed between the bracket 1 and the temple and is rotatably attached to the bracket 1, a bolt body 5 attached to the hinge portion 3, and a bolt body 5
And a cylindrical body 6 into which the hinge part 3, the bolt body 5 and the spring body 4 are inserted. 2 to 5
FIGS. 2A and 2B are views showing parts constituting a spring hinge device of the present invention, FIG. 2 shows a hinge portion, FIG. 3 shows a spring body, FIG. 4 shows a bolt body, and FIG. FIG. 6 is a view showing the entire spring hinge device after assembly according to the present invention.

As shown in FIG. 2, the hinge portion 3 comprises a cylindrical base portion 31 and a plate-like tongue piece 32. A screw hole 31A is provided in the base 31 of the hinge portion, and the bolt body 5 is screwed into the screw hole 31A and attached. The tongue piece 32 of the hinge part is rotatably attached to the tongue piece 11 of the bracket via the support shaft 7, and is a part serving as a so-called support piece of a rotation mechanism of the temple 2. Is rotatably supported by the bracket 1.

Next, as shown in FIG. 3, a coil spring is used specifically as the spring body 4, and this spring body 4 acts as a reaction force when the temple 2 rotates over.

As shown in FIG. 4, the bolt body 5 has a shaft 5
1 and a head 52 with a rear end portion of the shaft portion 51 expanded. A screw portion 51A corresponding to the screw hole 31A of the hinge portion is provided at the tip of the shaft portion 51 of the bolt body. A notch groove 52A is formed in the head 52 of the bolt body, and a bolt or the like is inserted into this notch groove 52A and screwed in, so that the bolt body 5 can be easily attached to the hinge part 3.

In a period from a state immediately before the over rotation to a state in which the temple 2 is closed (referred to as a normal state), the locking projection 22 of the temple is fitted into the notch groove 52A of the bolt body, 2 and the bolt 5 are integrated. The rotation of the temple, which is the same as the cylindrical body, is prevented. Incidentally, as described later, the spring body 4 is set so as to be elastically supported outward between the head portion 52 of the bolt body and the reduced diameter portion 61 of the cylindrical body.

The hinge 3 (specifically, the base 31), the spring 4 and the bolt 5 as described above are inserted in the cylinder 6. In the present invention, there is a great feature in the method of manufacturing the cylinder 6. 5A and 5B are views showing the cylindrical body, FIG. 5A is a perspective view, and FIG. 5B is a front view.

The cylindrical body 6 is provided with a reduced diameter portion 61, and the reduced diameter portion 61 allows the small diameter through hole 64, the first large diameter through hole 62, and the second Are formed, respectively. The first large-diameter through hole 62 of the cylindrical body 6 is provided with a substantially arc-shaped notch 62A.

The base 31 of the hinge portion is housed in the first large-diameter through hole 62. Further, a notch concave portion 62B is further formed in the notch portion 62A, and a part (extended portion) of the tongue piece 32 of the hinge portion is fitted and held in the notch concave portion 62B. Therefore, the rotation of the cylinder 6 is prevented, the temple 2 is always stabilized, and the slide of the cylinder 6 with respect to the hinge portion 3 is smoothly guided. However, as will be described later, when the cylindrical body is square or irregular, the rotation of the cylindrical body is naturally prevented even if there is no engagement between the cutout recess of the cylindrical body and the tongue piece of the hinge portion.

The inner diameter of the first large-diameter through-hole 62 is formed to be substantially the same as the outer diameter of the base 31 of the hinge portion. It is guided along and slides (slides). As described above, since the cylindrical body 6 slides while being guided by the base 31, the movement can be extremely smoothly performed. In addition, the first large-diameter through hole 6
2, a flat pressing surface 62C is formed, and when the pressing surface 62C presses the contact surface 12 of the bracket, the cylindrical body 6 is pushed back and slid, whereby the temple 2
Can be over-rotated (this will be described in more detail in FIG. 10).

By the way, the cylindrical body 6 is formed such that the sliding contact area of the hinge with the base 31 is thick. This sliding contact area is a joint portion between the hinge part 3 and the cylinder 6, and a large force is applied when the temple is rotated, and the pressing surface 62C of the cylinder 6 is moved when the temple is over-rotated. It is also a part that presses and requires strength. On the other hand, hinge part 3
The cylinder 6 and the cylinder 6 are also parts that are mutually rubbed by sliding, and are likely to be worn. Therefore, by making the sliding contact area thick, the cylindrical body 6 is reinforced and can cope with abrasion.

A bolt body 5 and a spring body 4 attached to the hinge part 3 are inserted into the second large-diameter through hole 63 of the cylinder body. Reduced diameter part 6
1 and is elastically supported, and in this state, the cylinder 6 is fixedly connected to the temple 2. The temple 2 has the fitting portion 21 mounted in the second large-diameter through hole 63 of the cylindrical body. In this case, the mounting is fixed by bonding or screwing. Thus, the temple 2 is connected to the bracket via the spring hinge device A.

Here, the procedure for assembling the spring hinge device A will be briefly described. First, after attaching the spring body 4 to the bolt body 5, it is attached to the second large-diameter through hole 63.
On the other hand, the hinge portion 3 is mounted in the first large-diameter through hole 62 of the cylindrical body. Then, by screwing the screw portion 51A of the shaft portion of the bolt body into the screw hole 31A of the hinge portion, the spring body 4 is elastically supported between the head portion 52 of the bolt body and the reduced diameter portion 61 of the cylindrical body. State.

Finally, the temple 2 and the spring hinge device A are connected by attaching the temple fitting portion 21 to the cylindrical body 6 (see FIG. 6). As described above, the spring hinge device A of the present invention has a structure in which the number of parts is reduced as compared with the conventional one, and thus the cost is reduced. In addition, since the number of parts is small, the spring hinge device A can be assembled efficiently, and work efficiency is improved.

In the present invention, one of the features is that the cylindrical body 6 is formed by drawing processing without cutting or casting as in the conventional case. Next, a method of forming the cylinder 6 will be briefly described. The drawing process includes a cylindrical drawing, a rectangular tube drawing, a deformed drawing, and the like. Here, the cylindrical body is formed by the cylindrical drawing. This drawing process is known.

First, a thin steel plate as a material of a cylindrical body is placed on a die for drawing and drawing, and the periphery thereof is fixed. Here, in order to form the sliding contact area of the cylindrical body, a part of the steel plate is formed thick. Next, a steel plate is pressed with a drawing punch to form a bottomed body with a flange, which is the original shape of the cylindrical body. take).

Next, by cutting the bottom surface and the flange of the bottomed body, a cylindrical body having an open top and bottom is formed. Finally, a drawing process is performed from the periphery at the position to be the reduced diameter portion of the cylindrical body. This completes the cylindrical body. Such a drawing method using a drawing method can efficiently produce a thin-walled cylindrical body, and thus is lower in cost than cutting and casting.

Further, since the reduced diameter portion for supporting the spring body is easily formed by the aperture, the manufacturing efficiency is extremely high. The shape of the cylindrical body is not limited to the cylindrical shape, and if a mold is selected, the cross-sectional shape can be freely changed by the above-described square cylinder drawing or irregular drawing. For example, FIG. 7A shows an example in which a quadrangular cylinder 6 is formed by a rectangular cylinder aperture, and FIG. 7B shows an example in which a hexagonal cylinder 6 is formed by a rectangular cylinder aperture.

Next, the manner of rotation of the spring hinge device A of the present invention will be described. FIG. 8 is a cross-sectional view showing the temple in a state immediately before the over-rotation (normal state), FIG. 9 is a cross-sectional view showing the temple in a closed state (normal state), and FIG. 10 shows the temple in the over-rotation state. It is sectional drawing.

[Normal Time] Now, when the temple 2 is in the state immediately before over-rotation, the bracket 1 and the temple 2 are in a straight line, and the contact surface 12 of the bracket and the pressing surface 62C of the cylinder of the spring hinge device A are in contact with each other. It is in a contact state (see FIG. 8).

On the other hand, when the temple 2 is completely folded and closed, the bracket 1 and the temple 2 are substantially vertical, and the contact surface 12 of the bracket and the pressing surface 62C of the cylinder of the spring hinge device A are separated from each other. (See FIG. 9).

[Over rotation] When the temple 2 rotates over the support shaft 7 as a fulcrum, simultaneously with the rotation of the temple 2, the pressing surface 62C of the cylindrical body presses the contact surface 12 of the bracket. The cylinder 6 slides rearward while slidingly contacting the base 31 of the hinge. At this time, in the cylinder 6,
The spring body 4 supported between the reduced diameter portion 61 of the cylindrical body and the head 52 of the bolt body is reduced by sliding of the cylindrical body 6.

At this time, since the bolt body 5 is fixed to the hinge part 3, the head part 52 of the bolt body and the temple fitting part 21 are separated by the movement of the cylindrical body 6. Spring body 4
The temple 2 integrated with the cylindrical body 6 due to the reduction in size generates a return force to return to the normal position by receiving the repulsive force. Needless to say, the spring hinge device A can be softly fitted to the temporal region of the face due to the restoring force.

Although the present invention has been described above, the present invention is not limited to the embodiment, and it goes without saying that various other modifications can be made without departing from the essence of the present invention. . Although the embodiment has been described with reference to full-rim spectacles, it is naturally possible to apply this to rimless spectacles and half-rim spectacles.

[0045]

As described above, the spring hinge device of the present invention can perform an assembling operation very easily and efficiently because the number of parts is reduced as compared with the prior art. In addition, the structure of the cylinder of the spring hinge device can be simplified as much as possible, and its weight is reduced. In addition, there is an advantage that a structure for easily stopping the spring body can be obtained by using the drawing process. In addition, since the cutout concave portion in the case where the cylindrical body is a cylinder fits into the tongue piece of the hinge portion, the rotation of the temple is prevented from rotating.

[Brief description of the drawings]

FIG. 1 is a view showing an entire pair of eyeglasses provided with a spring hinge device of the present invention, showing a rotating state of a temple.

FIGS. 2A and 2B show a hinge part constituting the spring hinge device of the present invention, wherein FIG. 2A is a front view, FIG. 2B is a top view, and FIG. 2C is a perspective view.

FIG. 3 is a front view showing a spring body constituting the spring hinge device of the present invention.

FIGS. 4A and 4B show a bolt body constituting the spring hinge device of the present invention, wherein FIG. 4A is a front view and FIG. 4B is a right side view.

FIG. 5 is a view showing a cylinder of the present invention;
(A) is a perspective view and (B) is a front view.

6A and 6B show a spring hinge device after assembly according to the present invention, wherein FIG. 6A is a cross-sectional view and FIG. 6B is a front view.

FIGS. 7A and 7B are perspective views showing a modified example of the cylindrical body of the present invention, wherein FIG. 7A shows a square cylindrical body, and FIG. 7B shows a hexagonal cylindrical body.

FIG. 8 is a cross-sectional view showing a temple in a state immediately before over-rotation according to the present invention.

FIG. 9 is a cross-sectional view showing a temple in a closed state according to the present invention.

FIG. 10 is a cross-sectional view showing a state of the temple according to the present invention when the temple is over-rotated.

[Explanation of symbols]

 A: Spring hinge device 1 ... Bracket 11 ... Tongue piece 11A ... Support hole 12 ... Contact surface 2 ... Temple 21 ... Fitting part 22 ... Locking protrusion 3 ... Hinge part 31 ... Base 31A ... Screw hole 32 ... Tongue piece 4 ... Spring body 5 ... Bolt body 51 ... Shaft part 51A ... Screw part 52 ... Head part 52A ... Notch groove 6 ... Cylinder body 61 ... Diameter part 62 ... First large diameter through hole 62A ... Notch part 62B ... Cut Notched recess 62C ... Pressing surface 63 ... Second large diameter through hole 64 ... Small diameter through hole 7 ... Support shaft R ... Rim frame

Claims (8)

[Claims] 1. A spring hinge device for rotatably mounting a temple to a bracket of spectacles, comprising: a hinge portion rotatably mounted on the bracket; a bolt body mounted on the hinge portion; A spring body mounted on the body, and a cylindrical body fixedly connected to the temple with the hinge portion, the bolt body, and the spring body inserted therein, wherein the spring body has a head portion of the bolt body and a reduced diameter of the cylindrical body. A spring hinge device, wherein the spring hinge device is resiliently supported between the first and second portions. 2. The spring hinge device according to claim 1, wherein the cylindrical body slides on the base of the hinge part and slides. 3. The spring hinge device according to claim 1, wherein the cylindrical body is formed by drawing. 4. The spring hinge device according to claim 1, wherein the reduced diameter portion is formed by drawing a cylindrical body. 5. The spring hinge device according to claim 1, wherein the cylindrical body is connected to the temple by bonding or screwing. 6. The spring hinge device according to claim 1, wherein a sliding contact area of the cylindrical body with respect to the hinge portion is made thick. 7. The spring hinge device according to claim 1, further comprising a cutout recess for receiving a base of the hinge portion. 8. A spring hinge device for rotatably mounting a temple to a bracket of spectacles, comprising: a hinge portion rotatably mounted on the bracket; a bolt body mounted on the hinge portion; A spring body attached to the body, and a cylinder body bonded or screwed to the temple with the hinge portion, the bolt body, and the spring body interposed, and the spring body and the cylinder head are connected to each other. A spring hinge device, which is elastically supported between a reduced diameter portion formed by drawing of a body and a sliding contact region with respect to a hinge portion of a cylindrical body, is thickened.