JPS5849668Y2 - Rail mounting mechanism for electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rail mounting mechanism for electrical equipment, and more particularly to a mechanism for mounting electrical equipment, such as a surface connection socket, on a rail having continuous plate-like edges on both sides.

Conventionally, this type of rail mounting mechanism has been shown in Figures 1 and 2.
As shown in the figure, the equipment body 3 is attached to one edge 2 of the rail 1.
A groove (not shown) formed on the bottom 4 of the device is engaged with the other edge 2 of the device, and a stepped portion 8 of a holder 7 provided on the bottom 4 of the main body 3 of the device is engaged. was.

This holder 7 connects the stepped portions 9, 9 on both sides to the groove portion 6 of the device main body 3.
. 3 from the rail 1 is carried out by pulling the protrusion 11 outward against the elasticity of the arms 10, 10 and releasing the step 8 from the rail edge 2.

However, in this case, since the stepped portion 8 is a rigid body, the engagement with the edge portion 2 may be too strong depending on variations in the thickness of the rail 1, causing the device body 3 to slide in the longitudinal direction of the rail 1. This has the drawback that the engagement is not possible or the engagement is too weak and causes rattling.

The present invention was devised in view of these shortcomings, and its purpose is to provide a mounting mechanism that can effectively absorb variations in rail thickness and allow electrical equipment to be mounted on rails without any interference. It's about doing.

The present invention will be described below with reference to the accompanying drawings.

3 to 5, the holder 20 has an inclined surface 22 formed on the back surface of the retaining portion 21 at the tip, that is, the portion facing the edge 2 of the rail 1, and a small protrusion 23 on the inclined surface 22. 23, and the engaging portion 21 is divided at the center by the slit 21a to impart elasticity to the engaging portion 21, and an approximately S-shaped elastic arm portion 25 is provided within the approximately mouth-shaped opening. It is something that

The elastic arm portion 25 is parallel to the bottom portion 16 of the device body 15 and is connected to the holder body portion only at both ends, and a projection 26 projecting downward is formed in the center portion.

This holder 20 connects the step portions 27 and 27 on both sides to the device body 15.
By pushing it into the groove 17.17 of the protrusion 2.
6 slides through the inclined groove 19 and enters into engagement with the hole 18, thereby being attached to the bottom 16 of the device body 15.

At this time, the holder 20 is guided by the groove 17 and is slidable within the range of elastic deformation of the arm 25.

In the above configuration, attachment to the rail 1 is performed as follows.

That is, one groove (not shown) provided in the device body 15 is engaged with the edge 2 of the rail 1, and the other edge 2 is engaged with the inclined surface 22 of the holder 20.

At this time, the other edge 2 first presses the inclined surface 24 to slide the holder 20 outward, and the holder 20
By returning with the elasticity of , it engages with the small protrusions 23.23 provided on the inclined surface 22.

Even if there are variations in the thickness of the rail 1, the elasticity of the retaining part 21 itself and the small protrusions 23 provided on the inclined surface 22 will absorb the variation and prevent it from being too strong or too weak. The device main body 15 can be attached to the rail 1 with an appropriate engagement force without having to do so.

Note that, instead of the elastic arm portion 25, the holder 20 may be replaced with a pair of elastic arm portions 10, 10 shown in FIG. 2, for example.

However, if the elastic arm part 25 is approximately S-shaped, the strength of the arm part itself becomes stronger, and the protrusion 26 and the hole in the device body 15
This has the advantage that the engagement accuracy is higher than that of No. 8.

As is clear from the above explanation, according to the present invention, the small protrusion provided on the inclined surface of the holder engages with the rail edge, and divides the retaining part approximately in the center to form the engaging part itself. Because of the elasticity, even if there are variations in the thickness of the rail, the device body can be attached to the rail with a good engagement force that absorbs the variations and is neither too strong nor too weak.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the rail, Fig. 2 is an exploded perspective view of a conventional rail mounting mechanism, Fig. 3 is an exploded perspective view of the rail mounting mechanism according to the present invention, and Fig. 4 is a plan view of the holder. Figure 5 is the fourth
It is a sectional view taken along the line ■-V in the figure. 1...Rail, 2...Edge, 15...
...Equipment body, 16...Bottom, 20...
...Holder, 21...Engagement part, 21a...
... Slit, 22 ... Inclined surface, 23 ...
...Small protrusion.

Claims (1)

[Scope of utility model registration request] A groove formed at the bottom of the device body is engaged with one edge of a rail having plate-like edges on both sides, and a holder provided at a position facing the groove is elastically engaged with the other edge. In a rail mounting mechanism for an electrical device to be fitted, an inclined surface facing the edge of the rail is formed on the engaging portion of the holder, a small protrusion is provided on the inclined surface, and approximately the center of the engaging portion is formed. A rail mounting mechanism for electrical equipment characterized by being separated.