JPH0341500Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lead wire clamping device.

[Problems to be solved by conventional techniques and ideas]

Conventionally, various electrical devices have been provided with clamp devices for holding lead wires. This clamp device is generally molded integrally with the case on the back side of the case, and is, for example, the sixth clamp device.
It is as shown in the figure.

The clamping device shown in FIG. 6 consists of a pair of opposing elastic pieces 1 and 2 implanted in a case 5, and lead wire locking claws 1a and 2a are formed inside the tip of both elastic pieces. Multiple lead wires 3 between 1 and 2
is held, and its release is prevented by the locking claws 1a and 2a. When attaching the lead wire 3, the lead wire 3 is guided by the tapered surfaces 1b, 2b formed inside the tips of the locking claws 1a, 2a, making use of the flexibility of the elastic pieces 1, 2. The lead wire 3 is easily pushed into the holding part 4 between the elastic pieces.

However, in the case of the above-mentioned clamp device, since the elastic pieces 1 and 2 protrude from the back side of the case,
If an external force is applied to the elastic pieces 1 and 2 by dropping the case 5, the elastic pieces 1 and 2 are likely to break. Therefore, the thickness of the elastic pieces 1 and 2 may be increased, or the elastic pieces 1 and 2 may be made thicker.
As shown in the figure, there is a large radius at the base of the elastic pieces 1 and 2.
Although measures have been taken to provide the sections 1c and 2c, reinforcing the elastic piece itself in this way has the disadvantage that the elastic piece lacks flexibility, making it difficult to attach the lead wire 3. Of course, lead wire 3 is forced.
If the elastic pieces 1 and 2 are pushed in, the elastic pieces 1 and 2 may break.

Therefore, in view of the above-mentioned problems, the present invention provides a clamping device for lead wires that does not impair the workability of attaching the lead wires and prevents them from being easily broken and damaged by external forces acting from outside the case. It is intended to.

[Means for solving problems]

In order to achieve the above object, the lead wire clamping device according to the present invention has a lead wire holding portion between a pair of opposing members, at least one of which is an elastic piece, which is formed on the outside of the case so as to protrude from the surface thereof. In the lead wire clamping device, in which a locking claw is formed on at least one of the opposing members, a protective wall larger than the height and width of the elastic piece is provided on the outside of the case so as to protrude from the surface thereof. It is characterized by being formed side by side near the outside of the piece.

[Effect]

In the above configuration, a protective wall larger than the height and width of the elastic piece is provided on the outside of the case in the vicinity of at least the elastic piece of the pair of opposing members constituting the lead wire holding part so as to protrude from the surface of the elastic piece. Since they are formed side by side, even if an external force is applied from the outside of the case, this external force will only act on the protective wall, which is taller and wider than the elastic piece, and will not act on the elastic piece. Therefore, even if the elastic piece is provided with sufficient elasticity so as not to impair the ease of holding the lead wire and attaching the lead wire, the elastic piece will not break.

〔Example〕

1 and 2 show a first embodiment of the present invention.

In this embodiment, the pair of elastic pieces 1 and 2 are both formed with relatively thin walls, and a lead wire holding portion 4 is formed between the elastic pieces 1 and 2 as in the conventional example, and a locking claw is provided at the tip. 1a, 2a, and tapered portions 1b, 2b. A pair of protective walls 6, 7 are installed near the outside of the pair of elastic pieces 1, 2. The protective walls 6, 7 are thicker than the elastic pieces 1, 2, and their height h and width w are slightly larger than the height H and width W of the elastic pieces 1 and 2.

Therefore, when the case is dropped, the external force is received by the protective walls 6, 7 and does not act on the elastic pieces 1, 2, so that the elastic pieces 1, 2 will not break and the lead wire 3 will not fall off.

FIGS. 3 and 4 show a second embodiment. In this embodiment, the pair of protective walls 6, 7 are composed of a pair of elastic pieces 1, 2.
It is formed into a U-shaped cross section so as to surround each of the two sides from three sides, and although the wall thickness is not very thick, it is strong. In addition, the inside of the tip part has tapered parts 6a, 7a, which are designed to facilitate the attachment of the lead wire 3, similar to the tapered parts 1b, 2b of the elastic pieces 1, 2. Of course, also in this embodiment, the height h and width w of the protective wall are preferably larger than the height H and width W of the elastic pieces 1 and 2.

In the above-described embodiment, the lead wire holding section is formed of a pair of elastic pieces 1 and 2, and the locking claws 1a and 2a are formed at the tips of both elastic pieces 1 and 2. As shown in FIG. 5, the wire holding portion is constructed between a pair of opposing members, at least one of which is an elastic piece 2 and the other is a fixed member 1', and the locking pawl is formed between a pair of elastic pieces 2 and 2 as shown in the figure. Alternatively, the present invention can equally be applied to a structure in which the protective walls 7 are formed only on one of the fixed opposing members 1', and in such a case, one pair of protective walls 7 is sufficient instead of a pair.

[Effect of idea]

As explained above, according to the present invention, even if an external force is applied from the outside of the case, this external force acts only on the protective wall, which is larger in height and width than the elastic piece, and does not act on the elastic piece. Therefore, even if the elastic piece has sufficient elasticity so as not to impair the ease of holding the lead wire and attaching the lead wire,
It is possible to provide a clamping device for a lead wire in which an elastic piece does not break, the lead wire mounting workability is not impaired, and the lead wire is not easily broken and damaged by an external force acting from outside the case.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the first embodiment of the present invention, Fig. 2 is a side view of the same embodiment, Fig. 3 is a perspective view of the second embodiment, and Fig. 4 is a plan view a and a front view of the same embodiment. Figure b, side view c, and Figure 5 are perspective views showing the third embodiment, and Figure 6 is a perspective view of the conventional example. DESCRIPTION OF SYMBOLS 1, 2... Elastic piece, 1a, 2a... Locking claw, 3... Lead wire, 4... Holding part, 6, 7... Protection wall, 6a, 7
a...Tapered part.

Claims (1)

[Claims for Utility Model Registration] (1) A lead wire holding portion is provided between a pair of opposing members, at least one of which is an elastic piece, which is formed on the outside of the case so as to protrude from the surface thereof; In the lead wire clamping device formed with a locking claw, protective walls larger than the height and width of the elastic piece are arranged near the outside of the elastic piece so as to protrude from the surface of the case. A lead wire clamping device characterized by: (2) The lead wire clamp device according to claim 1, wherein the protective wall has a U-shaped cross section surrounding the elastic piece. (3) The lead wire clamp device according to claim 2, wherein a tapered portion is formed inside the tip of the protective wall to guide the lead wire between the elastic pieces.