JPS6153699B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection device between a frame and a temple in an eyeglass frame, which eliminates looseness and improves stiffness.

As shown in FIG. 1, the glasses include a glasses frame 1 to which glasses lenses are attached, a temple 2 whose other end is attached to the glasses frame 1, and a temple 3 whose one end is connected to one end of the glasses frame 1. It consists of As a connection device between the chi 2 and the vine 3, there is a device as shown in FIGS. 2 and 3. That is, a connecting piece 21 with a screw hole 21A provided at one end of the slot 2, and a cylindrical groove 22A provided on the upper part.
The connecting piece 22 is recessed and a circular hole 22B is bored in the lower part thereof, and the connecting piece 22 is provided facing each other at a constant interval and protrudes, and a circular hole 31A is bored between the connecting pieces 21 and 22. Vine 3
Insert the insertion piece 31 protruding from one end, insert the tightening screw 32 into the circular holes 22B and 31A, and insert the screw hole until the head bearing surface of the tightening screw 32 comes into pressure contact with the bottom surface of the cylindrical groove 22A. It is screwed into 21A.

In this prior art, since the hinge 2 and the temple 3 are screwed together via the metal connecting pieces 21, 22, the insertion piece 31, and the tightening screw 32, the insertion member rotates as the temple 3 opens and closes. Tightening screw 3 of piece 31
2, the tightening screw 32 and screw hole 2 are tightened by repeated minute rotations of the tightening screw 32 caused by pressure contact with the screw hole 2.
1A wears out, causing looseness and reducing the tightening force of the tightening screw 32, resulting in looseness when opening and closing the temple 3, that is, poor holding power when the temple 3 is held still at a desired position. There is.

The present invention has been made for the purpose of solving the drawbacks of the prior art, and the connecting device of the eyeglass frame of this invention includes a connecting piece having a circular hole and a cylindrical groove. is recessed. Alternatively, a connecting piece in which a circular hole is bored is placed opposite to each other at a certain interval and protruded from one end of the chi, and a tube of the same thickness and made of a material softer than metal is connected to the circular hole and the circular cylindrical groove, respectively. An insertion piece having a circular hole approximately equal to the inner diameter of the tube and protruding from one end of the temple is inserted between the connecting pieces, and a metal spring pin is inserted into the circular hole. It is press-fitted into the circular hole of the tube and the insertion piece.

The present invention will be explained below based on the drawings. FIG. 4 and FIG. 5 are diagrams showing an embodiment of the present invention.

First, to explain Mizonari, 41 is a connecting piece, and Chi 4
The connecting piece 41 is protruded from the lower inner side of one end of the
A circular hole 41A is bored in the center. Circular hole 41
A tube 42 having a slightly larger outer diameter than the circular hole 41A is press-fitted into the hole A.

Reference numeral 43 denotes a connecting piece, which is protruded from the upper inner side of one end of the tooth 4 in a manner that faces the connecting piece 41 at a constant distance, and the lower surface of the connecting piece 43 has a cylindrical groove 43A having the same diameter as the circular hole 41A. It is recessed.

The connecting piece 43 may be provided with a circular hole (not shown) instead of the cylindrical groove 43A. Cylindrical groove 4
3A or the center of the circular hole (not shown) and the center of the circular hole 41A are on the same line, and a tube 44 made of the same material and having the same thickness as the tube 42 is press-fitted into the cylindrical groove 43A or the circular hole (not shown). The tubes 42 and 44 are made of a material softer than metal, such as hard rubber, plastic, and especially polyacetal resin, which has good abrasion resistance.

In addition, the formation of the connecting pieces 41, 43, the circular hole 41A, the cylindrical groove 43A, or the circular hole (not shown), and the press-fitting of the tubes 42, 44 are performed by forming a rod body integrally with the end piece 4 inside one end of the piece 4; This may be carried out by recessing a cylindrical groove or drilling a circular hole in the rod body, press-fitting a tube into the cylindrical groove or the circular hole, and then cutting out the middle part of the rod body. .

The connecting piece 41 may be placed on the upper side, and the connecting piece 43 may be turned over and placed on the lower side.

Reference numeral 51 denotes an insertion piece that protrudes from the inner middle of one end of the temple 5, and a circular hole 51A is bored in the center of the insertion piece 51. The thickness of the insertion piece 51 is the same as that of the connecting piece 4.
1,43, and the circular hole 51A
is equal to the inner diameter of the tubes 42,44. The insertion piece 51 is inserted between the connection pieces 41 and 43.

A spring pin 6 is made of metal, for example, stainless steel, and its outer diameter is larger than the inner diameter of the tubes 42 and 44 and the diameter of the circular hole 51A. The spring pin 6 is driven and press-fitted into the tube 42, the circular hole 51A, and the tube 44. By this driving press-fitting, the tip of the spring pin 6 comes into pressure contact with the bottom surface of the cylindrical groove 43A, or becomes flush with the top surface of the connecting piece 43, and the spring pin 6 is contracted to its nominal diameter. Due to this spring action, the spring pin 6 connects the connecting pieces 41, 43 and the insertion piece 51 without coming off.

Next, the action will be explained.

When the hinge 4 is fixed and the temple 5 is opened and closed, the middle part of the spring pin 6 is crimped to the insertion piece 51 by the spring action, so the spring pin 6 does not rotate as the temple 5 opens and closes. It rotates inside the tubes 42,44. This rotation causes both ends of the spring pin 6 and the tubes 42, 44 to
friction and wear, but this wear only occurs on the tubes 42, 44, which are made of soft material, and does not occur on the spring pin 6, which is made of hard material. As the soft material used is plastic, especially polyacetal resin with good wear resistance, the amount of wear is extremely small.

Next, when the tubes 42 and 44 are worn out due to the numerous opening and closing of the temple 5, the tube 4
The inner diameters of the pins 2 and 44 increase accordingly, and the spring pin 6 expands outward by the increased spring action. Therefore, since the spring pin 6 is always pressed against the tubes 42 and 44, there is no play between the two.
Agaki gets better.

When the inner diameters of the tubes 42, 44 become equal to the outer diameter of the spring pin 6 due to progress of wear of the tubes 42, 44, the spring action is lost at both ends of the spring pin 6, so that the spring pin 6 and the tube 42 , 44 are no longer crimped. However, this invention
Since the amount of wear is extremely small, it is necessary to rotate the temple 5 at least tens of thousands of times until such a state is achieved, and compared to conventional screw connections, there is a very small chance of looseness and poor looseness.

As explained above, the present invention provides a connecting piece in which a circular hole is formed and a connecting piece in which a cylindrical groove is recessed or a circular hole is formed, facing each other at a constant interval. At the same time, a tube of the same thickness and made of a material softer than metal is press-fitted into the circular hole and the cylindrical groove or the circular hole, and a circular hole approximately equal to the inner diameter of the tube is bored. By inserting an insertion piece that is connected to the tube and protruding from one end of the temple between the connecting pieces, and press-fitting a metal spring pin into the circular hole of the tube and the insertion piece, the temple and the temple are connected. Since the backlash of the vine is eliminated, the effect of improving the backlash when opening and closing the vine can be obtained.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a part of the glasses, Figures 2 and 3 are diagrams showing the prior art, Figure 2 is an exploded perspective view, Figure 3 is a sectional view, and Figures 4 and 5 are views of the prior art. FIG. 4 is an exploded perspective view and FIG. 5 is a sectional view showing an embodiment of the invention. 1... Glasses frame, 2, 4... Satoshi, 3, 5
... Vine, 41, 43 ... Connection piece, 42, 44...
...Tube, 51...Insert piece, 6...Spring pin.

Claims (1)

[Scope of Claims] 1. A connecting piece in which a circular hole is bored and a connecting piece in which a cylindrical groove is recessed are provided protruding from one end of the chisel so as to face each other at a constant interval, and have the same thickness. A tube made of a material softer than metal is press-fitted into the circular hole and the cylindrical groove, respectively, and an insertion piece having a circular hole approximately equal to the inner diameter of the tube and protruding from one end of the temple is inserted into the connection. A device for connecting the jaw and the temple in an eyeglass frame, which is inserted between the two pieces and press-fits a metal spring pin into the circular hole of the tube and the insertion piece. 2. A connecting piece with a circular hole and a connecting piece with a circular hole are placed facing each other at a certain distance and protrude from one end of the joint, and are made of a material softer than metal with the same thickness. Press-fitting the tube into the circular hole and the circular hole, inserting an insertion piece having a circular hole substantially equal to the inner diameter of the tube and protruding from one end of the temple between the connecting pieces, and,
A connecting device between the jaw and the temple in an eyeglass frame, which is formed by press-fitting a metal spring pin into the circular hole of the tube and the insertion piece.