JPS6237345Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a socket for plug-in electrical equipment.

It is desired that this type of socket is easy to work with, is inexpensive, and has common parts.

For example, sockets with screw terminals that can be used for both conventional screw mounting and rail mounting are
The socket 1 shown in FIGS. 4 to 4 is known, and this socket 1 has an insulating base 2 formed by molding, and a terminal leg (not shown) of a mating electric device 3 embedded in the insulating base 2 can be inserted and connected. contact fittings 4, screw terminals 5 electrically connected to the respective contact fittings 4, a mounting mechanism (not shown) to the rail 6 provided on the insulating base 2, and mounting holes 2a with screws 7 to the panel _. It also includes a locking hole _2b of a holding fitting, which will be described later, and holding fittings 8 and 9 of the electrical equipment 3, which are different depending on the rail mounting. The difference between the holding fittings 8 and 9 is the insulating base 2.
The holding fitting 8 for mounting the rail can be locked by simply inserting it into the locking hole _{2b .}
On the other hand, the retainer 9 for screw attachment has a bent tongue 9 _b at its tip which has a through hole 9 _a that can be tightened together with the screw 7 when fixing the insulating base 2. It is that you are. This is because, as is clear from Fig. 2, when fixing with the screw 7, the head of the screw 7 partially blocks the locking hole _2b , so it cannot be attached with the insertion type holding bracket 8. It is. For this reason, this socket 1 requires two types of holding metal fittings 8 and 9 for rail mounting and screw mounting, which makes component management troublesome and increases investment in molding molds, which increases costs. This has disadvantages such as being difficult to use because it can be expensive and requires the user to make selections and arrangements.

The object of this invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a socket for plug-in electrical equipment that is easy to manage, easy to use, and inexpensive.

According to the present invention, a contact fitting into which a terminal leg of an electrical device is inserted is embedded, screw terminals electrically connected to each contact fitting are arranged at both ends, and the terminal leg is inserted into the contact fitting. A holding fitting made of an elastic body for holding an electrical device is provided with an insulating base having a locking hole that can be detachably attached to the ends adjacent to both ends where the screw terminals are arranged, and the bottom surface of the insulating base is In the socket that allows rail mounting and screw mounting using a mounting mechanism for mounting a rail provided on the side and a mounting hole for mounting a screw located inside the locking hole and penetrating the insulating base, the screw of the insulating base This is achieved by making the surface position of the mounting hole for mounting higher than the surface position of the locking hole of the holding metal fitting to provide a step, and providing the holding metal fitting with a recess for accommodating the outer diameter of the mounting screw head.

Examples of this invention will be described below based on the drawings. In FIGS. 5 and 6, parts corresponding to those of the conventional type shown in FIG. 1 are given the same reference numerals to avoid duplication of explanation, and only different parts will be explained.
The difference in this embodiment is that, first, there is a step S in the surface position between the mounting hole 2a, which is fixed with the screw 7 provided on the insulating base ₂ , and the retaining metal fitting 10, which will be described later, and the locking hole _2b . The holding fitting 10 _, which is similar to the conventional holding fitting 8 shown in FIG. And the protrusion L ₁ to the outside of this recess 10 _a
is formed smaller than the width _L2 of the insulating base 2, and does not increase the external dimensions. Furthermore, the fifth
11 in the figure is a mechanism for attaching the insulating base 2 to the rail (not shown), which is similar to the conventional type, and is always biased by a spring in the direction of arrow P to lock the edge of the rail. It can be removed from the installation by pulling it in the opposite direction of the P arrow. With the above configuration, this socket can not only be attached to a rail, but also connect and attach electrical equipment via the holding bracket 10 in exactly the same way as the conventional type shown in FIG. 10 can be fixed to the panel with the screws 7 while being attached in advance. Therefore, since only one type of holding fitting is required, troubles caused by the mounting means are eliminated.

As explained above, according to the present invention, the surface position of the mounting hole for screw mounting of the insulating base is higher than the surface position of the locking hole of the holding metal fitting to provide a step, and the mounting screw head is mounted on the holding metal fitting. By providing a recess for escaping the outer diameter, the holding fitting can be used for both rail mounting and screw mounting, whereas conventionally it was required separately for rail mounting and screw mounting. Since only one type of holding fitting can be used, the number of parts can be reduced, costs including parts management can be reduced, and an inexpensive socket can be provided.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional plug-in electrical device socket, Fig. 2 is a front view of the main part of Fig. 1, and Figs. Fig. 5 is a perspective view of an embodiment of a socket for a plug-in electrical device according to this invention, and Fig. 6 is a cross-sectional view of the main part in case of screw installation as shown in Fig. 5. It is a front view. 2... Insulating base, 2 _a ... Mounting hole, 2 _b ... Locking hole, 3... Plug-in electrical equipment, 4... Contact fitting, 5... Screw terminal, 6... Rail, 7
...Screw, 10...Holding fitting, 10a...Recess.

Claims (1)

[Scope of utility model registration request] A contact fitting into which the terminal leg of an electrical device is inserted is embedded, screw terminals electrically connected to the contact fitting are arranged at both ends, and an elastic body that holds the electrical device inserted into the contact fitting is embedded. The holding fitting has an insulating base with locking holes that can be detachably attached to the ends adjacent to both ends where the screw terminals are arranged, and a mounting hole for rail mounting provided on the underside of the insulating base. In a socket that allows rail mounting and screw mounting using a mechanism and a mounting hole for mounting a screw located inside the locking hole and penetrating the insulating base, the surface position of the mounting hole for mounting the screw in the insulating base is providing a step higher than the surface position of the locking hole of the holding fitting;
A socket for a plug-in electrical device, characterized in that the holding fitting is provided with a recess for accommodating the outer diameter of the mounting screw head.