JPH09101486A - Coupling device for spectacle component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling device for spectacle components which gives secure loosening-stop effect and enables a component to easily and speedily be detached in repair or replacement. SOLUTION: This device consists of an elastic sleeve 11 which has an external diameter d1 a little less than the hole diameter (d) of a coupling hole 4 formed in the spectacle component and also has one end part coupled with a flange part 12 and a coupling pin 13 which is pressed and fitted in the elastic sleeve 11. The coupling pin 13 is provided with plural mountain-shaped annular projections 15 each having an external diameter d3 a little larger than the internal diameter d2 of the elastic sleeve 11, and a head 14 is coupled with the rear end. When the coupling pin 13 is pressed and fitted in the elastic sleeve 11, the annular projections 15 intrudes into the internal wall surface of the elastic sleeve 11, which is expanded radially and pressed against the wall surface of the coupling hole 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling device for mounting eyeglass parts.

[0002]

2. Description of the Related Art Small screws are usually used to connect various eyeglass parts such as hinges for attaching temples of eyeglasses, fixing of lens frames, attachment of nose pads, and the like.

[0003]

However, since the screw has a very small diameter and the spectacle component using the screw is small, the screw hole into which the screw is screwed cannot be lengthened.
There is a problem in that the screw can be screwed into the screw hole only for about 2 to 3 threads, and therefore it is very easy to loosen. As a means to prevent such loosening of screws,
Although a method in which a resin liquid is attached to the thread of the screw and screwed together has been implemented, the loosening preventing effect is insufficient only by adding extra work steps. In addition, there is also one in which an adhesive is applied to the threads to secure the locking by screwing them together, but in this case, it is difficult to remove the screws when repairing or replacing the eyeglass parts. was there.

The present invention has been made in view of the above circumstances, and provides an eyeglass component joining apparatus which has a sure locking effect and which can be easily and quickly removed when repairing or replacing an eyeglass component. The purpose is to do.

[0005]

In order to achieve the above object, the coupling device of the present invention has an outer diameter slightly smaller than the diameter of the coupling hole provided in the eyeglass component, and the flange portion is connected to one end portion. And a coupling pin press-fitted into the elastic sleeve. The coupling pin is provided with a plurality of thread-shaped annular projections having an outer diameter slightly larger than the inner diameter of the elastic sleeve. In addition, the head is continuously provided at the rear end, and when the coupling pin is press-fitted into the elastic sleeve, the annular protrusion bites into the inner wall surface of the elastic sleeve, and the elastic sleeve is radiused. It is configured to be expanded outward in the direction and pressed against the wall surface of the coupling hole.

It is preferable to provide a guide shaft portion having a diameter smaller than the hole diameter of the elastic sleeve at the tip portion of the coupling pin.
Further, the annular protrusion may be formed as a male screw, and the male screw may be press fit into the elastic sleeve so as to be screwed into the elastic sleeve.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment in which the present invention is applied to pivotally connecting a pair of butterfly portions 2 and 3 constituting a hinge 1 to which a temple is attached. One butterfly portion 2 has bifurcated seat plates 2a, 2a, and the other butterfly portion 3 has seat plates 3a fitted between the two seat plates 2a, 2a and is folded.
The seat plates 2a, 2a and the seat plates 3a, 3a are provided with a coupling hole 4 that coaxially penetrates them when they are fitted together. further,
The one seat plate 2a is provided with a counterbore portion 5 into which a head of a coupling pin, which will be described later, fits, concentrically with the coupling hole 4.

The coupling device 10 according to the present invention comprises an elastic sleeve 11 having a flange portion 12 continuously provided at one end, and a coupling pin 13 press-fitted into the elastic sleeve 11. The elastic sleeve 11 is formed in a cylindrical shape from a plastic material having an excellent elastic restoring force such as polycarbonate or Duracon, and has an outer diameter d1 slightly smaller than the hole diameter d of the coupling hole 4.
The connecting pin 13 is made of a metal material and has a head 1 at the rear end.
4, a plurality of threaded annular projections 15 each having a triangular cross-sectional shape are provided in parallel with each other in the axial direction on the outer periphery of the intermediate portion, and a thin guide shaft portion 16 is provided at the tip portion. ing. The outer diameter d3 of the annular projection 15 is formed to be slightly larger than the inner diameter d2 of the elastic sleeve 11, and the guide shaft 1
The outer diameter d4 of 6 is smaller than the inner diameter d2 of the elastic sleeve 11.

Then, as shown in FIG. 2, a pair of butterflies 2 and 3 to be joined are fitted to each other, an elastic sleeve 11 is inserted into the joint holes 4 which are coaxially overlapped with each other, and a flange portion 12 thereof is provided.
The guide shaft portion 1 of the coupling pin 13 in a state where it is pressed against and supported by the one seat plate 2a not provided with the spot facing portion 5.
When 6 is inserted into the coupling hole 4 from the side where the counterbore 5 is provided, and the coupling pin 13 is press-fitted into the elastic sleeve 11, the annular projection 15 bites into the inner wall surface of the elastic sleeve 11,
The elastic sleeve 11 is expanded radially outward. Due to this expanding action, the elastic sleeve 11 is pressed against the inner wall surface of the coupling hole 4, and the two butterfly portions 2 and 3 are coupled to the elastic sleeve 11 while being in frictional contact with each other so as to be rotatable with respect to each other. Therefore, the butterfly parts 2 and 3 can be smoothly rotated without rattling.

Repairing the two butterfly parts 2 and 3 connected in this way
When it is necessary to separate them for replacement, simply press the tip of the tool 20 such as a push rod against the guide shaft portion 16 of the connecting pin 13 and press in the axial direction, as shown in phantom in FIG. Since the connecting pin 13 is easily pushed out, the elastic sleeve 11 can be easily pulled out.

In FIG. 3, a temple 6 is joined to one butterfly portion 3 of the hinge 1 pivotally coupled as described above, and the other butterfly portion 2 is joined.
It shows a part of an eyeglass frame constructed by joining the armor 7. A lens frame 9 is attached to the armor 7 via a Phillips screw 8.
Has been fixed.

FIGS. 4 and 5 show another embodiment of the present invention. The difference from the embodiment shown in FIGS. 1 and 2 is only the structure of the coupling pin 13 ', and the other structures are the same. Since they are the same, description thereof will be omitted.

As is apparent from the drawings, in the coupling pin 13 'of this embodiment, the annular projection provided on the outer periphery of the shaft portion is the male screw 17, and the outer diameter d3 of the male screw 17 is the inner diameter of the elastic sleeve 11. It is formed to have a size slightly larger than d2. Further, the male screw 17 is provided up to the tip of the shaft portion, and the male screw 17 is press-fitted into the elastic sleeve 11 and fitted by screwing the male screw 17 into the inner wall surface of the elastic sleeve 11 so that the male screw 17 is bitten. The elastic sleeve 11 is expanded radially outward. The point that the elastic sleeve 11 is brought into pressure contact with the inner wall surface of the coupling hole 4 by this expanding action is the same as in the embodiment of FIGS. 1 and 2. To remove the connecting pin 13 'for repairing or replacing the eyeglass parts, a driver bit (not shown) is engaged with the engaging groove 18 provided in the head 14 in the same manner as a normal screw, and the loosening direction is set. It can be rotated to. A guide shaft portion 16 having a small diameter may be projectingly provided at the tip of the coupling pin 13 'as in the embodiment shown in FIGS.

In the above-described embodiment, the example in which the present invention is applied to the hinge to which the temple is attached has been described.
INDUSTRIAL APPLICABILITY The coupling device of the present invention can be used for attaching spectacle parts such as a screw for fixing a lens frame and a nose piece.

[0015]

As described above, in the coupling device of the present invention, the coupling pin bites into the elastic sleeve to expand the elastic sleeve outward in the radial direction, and the frictional contact pressure causes the eyeglass component to be secured. Since it is configured to be coupled, the locking effect is sure and the coupling location does not rattle. Moreover, when the eyeglass parts are repaired or replaced, the connecting pin and the elastic sleeve can be easily and quickly removed, which is very convenient for use and handling.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional front view of essential parts showing a disassembled state of a coupling device according to the present invention.

FIG. 2 is a vertical cross-sectional front view of essential parts showing the same coupled state.

FIG. 3 is a plan view of a main part of the spectacles showing the same usage state.

FIG. 4 is a vertical sectional front view of essential parts showing an exploded state of another embodiment of the coupling device according to the present invention.

FIG. 5 is a vertical cross-sectional front view of essential parts showing the same coupled state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge 2,3 Butterfly part 4 Coupling hole 10 Coupling device 11 Elastic sleeve 12 Flange part 13,13 'Coupling pin 15 Annular protrusion 16 Guide shaft part 17 Male screw

Claims (3)

[Claims] 1. An elastic sleeve having an outer diameter slightly smaller than the diameter of a coupling hole formed in an eyeglass component and having a flange portion continuously provided at one end thereof, and a coupling pin press-fitted to the elastic sleeve. The connecting pin is provided with a plurality of thread-shaped annular protrusions having an outer diameter slightly larger than the inner diameter of the elastic sleeve, and a head is continuously provided at the rear end of the connecting pin. When press-fitting into the elastic sleeve,
A coupling device for spectacle components configured such that the annular protrusion bites into an inner wall surface of the elastic sleeve, expands the elastic sleeve outward in the radial direction, and presses the wall surface of the coupling hole. 2. A guide shaft portion having a diameter smaller than the inner diameter of the elastic sleeve is provided at the tip portion of the coupling pin.
An eyeglass component coupling device as described. 3. The eyeglass component coupling apparatus according to claim 1, wherein the annular projection is formed as a male screw, and the male screw is press-fitted into the elastic sleeve so as to be fitted therein.