JPH0724789Y2 - Attachment structure for retaining metal fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a metal fitting mounting structure for preventing a connector used for electrical connection in electronic devices, devices, etc. from coming off during connection, and particularly to a case. Relates to a mounting structure of a retaining metal fitting applied to a synthetic resin plug.

(Prior Art) Conventionally, the case of this type of plug was made of metal,
Recently, the number of synthetic resin materials having good insulating properties is increasing due to improvements in performance such as strength, lightness and workability.

However, as shown in Fig. 3, the metal fittings are attached to these cases in order to prevent the connecting plugs from coming off during installation. The holes 31a, 31a of the metal fitting 31 were fitted in, and the portions of the projections 30a, 30a protruding from the holes 31a, 31a were heated and crushed to be deformed to fix the retaining metal fitting 31 to the case 30.

(Problems to be Solved by the Invention) In the above-mentioned conventional mounting structure of the retaining metal fitting, the tips of the protrusions of the case that pass through the holes of the retaining metal fitting are crushed and deformed to be fixed. However, in general, various forces such as pulling, twisting, and rotating are applied to the attaching portion of the retaining metal during the use of the plug.

When the case is made of metal, the joint with the retaining metal is also made of metal, so there is no problem even with the conventional structure. However, when the case is made of synthetic resin due to various other advantages, this mounting structure is not sufficient in strength, and there is a drawback that it is easily damaged particularly when it is twisted by a lateral force.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a drawback and to provide a structure for mounting a stopper retaining metal fitting of a connector which is applied to a connector of a case made of synthetic resin and which is strong and is not easily damaged.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the attachment structure of the stopper retaining metal fitting of the present invention is the mounting of the connector retaining stopper metal fitting 1 in which the case 10 is made of a synthetic resin material. In the structure, the retaining metal fitting 1 side of the retaining metal fitting mounting portion is provided with a hole 2 having a shape including at least a part of a straight line portion for regulating the position and posture, and the case 10 side is fitted with the hole 2 , A first protruding portion 11 into which the retaining metal 1 can be dropped, and a first protruding portion for ensuring the regulation of the position and the posture of the retaining metal 1.
A second projecting portion 12 having a side surface that opposes at least one side surface of the retaining metal fitting 11 and extends along the peripheral edge of the recessed retaining metal fitting 1 is provided with a shape capable of covering the hole 2 of the retaining metal fitting 1. The retaining metal retainer pressing plate 3 is made of the same material as that of the case 10, and the hole 2 of the retaining metal retaining fitting 1 is fitted into the first projecting portion 11 of the case 10 to drop the retaining metal retaining plate 3 from the outside of the hole 2. And the retaining plate pressing plate 3 and the case 10 are welded together to form an integrated structure.

(Example) Next, the Example of this invention is described in detail with reference to drawings.

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 (a) is a plan view of the embodiment shown in FIG. 1, and FIG. 2 (b) is a front view thereof.

It should be noted that the cable holding metal fitting 20 shown in FIG. 2 is omitted in FIG.

In this embodiment, only one side can be seen in FIG.
A first protrusion 11 and a second protrusion 12 are provided on the upper surface and the lower surface, respectively.

Holes 2 and 2 are formed in the retaining metal fittings 1 and 1, respectively.

The holes 2 and 2 are the first protrusions on the upper and lower surfaces of the case 10, respectively.
The side surfaces 1a and 1a of the retaining fittings 1 and 1 fitted to the inner side surface 12a of the second projecting portion 12 on the upper and lower surfaces of the case 10 respectively
Is shaped to conform to.

The retaining metal retainer pressing plates 3 and 3 are made of a synthetic resin of the same material as that of the case 10, and an inner surface of the retaining metal retainer pressing plates 3 and 3 is larger than the first projecting portion 11 so as to cover the first projecting portion 11.

Further, a concave portion that fits the first protruding portion is provided on the inner side, and projections 3a, 3a, 3a are provided on the bottom of the concave portion. The protrusion 3a is formed by pressing the retaining metal retainer pressing plate 3 against the first protrusion 11.
This is provided in order to facilitate the welding by concentrating energy in this portion when ultrasonically welding to 10. Further, although the inner wall surface of the inner concave portion has a stepped shape, this stepped shoulder portion also facilitates ultrasonic welding.

When the hole 2 of the retaining metal fitting 1 is fitted into the first projecting portion 11 on the upper and lower surfaces of the case 10 shown in FIG. 1 and is dropped, and the retaining metal retaining plate 3 is pressed from the outside to perform ultrasonic welding. As shown in FIG.

Since the hole of the retaining metal fitting 1 just fits into the first protruding portion 11 of the case 10 and one side of the retaining metal fitting is regulated by the inner side surface of the second protruding portion 12, the retaining metal fitting 1 is laterally displaced. Even when various forces such as rotation and pulling are applied, the mounting portion is not easily damaged due to the large first protrusion and the large retaining plate pressing plate 3.

The case 20 and the retaining metal pressing plate 3 are made of polyacetal in this embodiment.

The shape of the first protrusion 11 is rectangular in the embodiment of FIG. 1, but other shapes such as a semicircle may be used as long as they are in line with the gist of the present invention. .

(Effect of the Invention) As described in detail above, according to the present invention, two protruding portions are provided on the case side of the connector using the case of the synthetic resin, and the hole of the retaining metal is dropped into the one protruding portion. At this time, the retaining metal retainer pressing plate is welded from the outside of the first protruding portion so that at least one side surface of the retaining metal fitting is along the side surface of the second protruding portion. Since it can be fixed much more firmly than the mounting of the retaining metal fittings to the resin case, it will be damaged by various types of forces such as lateral displacement, rotation, pulling, etc. that are applied to the retaining metal fittings while using the plug. There is an effect that a plug that does not exist can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention. 2 is a plan view and a front view of the embodiment shown in FIG. FIG. 3 is an explanatory view showing an example of a conventional retaining fitting mounting structure for a connector. 1, 31 ... retaining metal fitting 2 ... hole of retaining metal fitting 3 ... retaining metal retaining plate 10, 30 ... case 11 ... first protruding portion 12 ... second protruding portion 20 ... cable retaining metal fitting

Claims (1)

[Scope of utility model registration request] 1. A mounting structure for a retaining metal fitting of a connector having a case formed of a synthetic resin material, wherein at least a part of the retaining metal fitting mounting portion is provided on the retaining metal fitting side for regulating a position and a posture. A hole having a shape including a straight line portion is provided, and on the case side, a first protrusion that fits in the hole and can drop the retaining metal fitting, and the position and the posture of the retaining metal fitting are surely adjusted. A second projecting portion facing at least one side surface of the first projecting portion and having a side surface along the peripheral edge of the dropped retaining metal fitting, and covering the hole of the retaining metal fitting. A retaining metal retainer pressing plate having a shape capable of being formed is made of the same material as that of the case, and the hole of the retaining metal is fitted into the first protruding portion of the case to drop the retaining metal from the outside of the hole. Press the metal plate and press the metal plate Mounting structure for retaining bracket plug connector which is integrated by welding the case with e plate.