JP2540458B2 - Electrical appliance plug connection device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an electric appliance having a row of unit plugs that are provided with wiring and that are pluggable and locked in the mating contacts. The present invention relates to a plug connecting device for connecting.

[Conventional technology]

Plug connection device of the type mentioned above for a program control device (see German Utility Model DE 7118518)
In, the unit plug in the hollow portion of the structural unit is held by the locking portion or the crushing connection used for connecting the wiring. In this case, the plug is provided with the wiring only after being inserted into the hollow portion. That is, the entire plug connecting device is installed in the appliance after completion, for which purpose in the known plug connecting device the plug connecting device is swung via a hinge joint in order to exert a force.

In the case of known connection devices of the type mentioned at the outset (French Patent Application Nos. 1262505, 2357079 and 8303717), the unit plug is located in the mating contact. It can be inserted, and can be locked in the inserted state by a locking means or a locking device.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION It is an object of the invention to improve a connecting device of the type mentioned at the outset such that, after the unit plug has been inserted, the entire connecting device can be separated from the appliance together.

[Means for solving problems]

According to the invention, the object is, in a plug connection device of the type described above, that a unit plug is connectable to a mating contact via a frame which releases the mating contact of an electrical appliance, and the unit This is achieved simply by the fact that the plug, together with this unit plug, is locked by a locking part in a frame which can be separated from the appliance. In order to allow the unit plugs to be pulled out individually or together with the plug connecting device, the locking portions are formed on the unit plugs and the frame so that the unit plugs can be pulled out against the locking resistance without tools. And is advantageous. When the unit plug is held by the insulating bush, the unit plug can be attached to the connection part of the switchgear in a pulled state. According to the plug connecting device of the present invention,
In contrast to the prior art, it is only necessary to provide the plug connection device with the unit plug at the required location. Furthermore, the plug connection device according to the invention is particularly suitable for automatically connecting electrical appliances, in particular electromagnetic switches, since the plugging can be carried out easily by a robot in order to obtain a corresponding arrangement. In order to be able to better take account of the different outlet directions of the wiring, it is advantageous if a plurality of frames are provided for one appliance. If the plug connection device is subjected to a large clamping pressure and, as a result, the withdrawal force is very high, it is advantageous if the frame has a locking arm for the insulating bush on the side opposite the appliance, which is accessible from the outside. Is. In such an embodiment, the individual unit plugs can be pulled out from the frame by bending the locking arms laterally.

〔Example〕

 An embodiment based on the present invention shown in the drawings will be described below.

The electromagnetic switch 1 comprises two rows of plug connection rows 2, 3 each with eight plug connection devices, these rows 2, 3 being the first
In the case of the embodiment shown, it is attached to two frames 4. An individual plug 5 is inserted into each frame 4. The unit plug 5 is composed of an insulating bush 6 and a flat contact 7 which is connected to the wiring 8 generally by a crush connection. The contactor 7 is electrically connected to the blade contactor 9 when the unit plug 5 is inserted into the holding opening 10 of the frame 4. When the insulating bush 6 is inserted, the locking projection 11 provided on the unit plug 5 pushes the elastic bridge piece 12 of the frame 4 laterally, and after the unit plug 5 is completely inserted,
Lock to the bottom edge of the. As shown in FIG. 3, since the side wall 13 of the holding opening 10 is formed in a slightly spherical shape, the locking projection 11 elastically bridges the bridge piece 12 when pulling the unit plug 5 with a large force. It flexes and slides out of the side wall 13. This allows the individual plugs 5 to be pulled out.

In the case of the embodiment shown in FIGS. 5 to 7, instead of the locking projection 11 provided on the unit plug 5, a locking arm 14 that engages with the rear side of the upper edge 15 of the insulating bush 6 is formed on the frame 4. Has been done. The unit plug 5 with the insulating bush 6 can only be pulled out here after the locking arm 14 has been bent back. The elasticity of the side wall 13 is provided by the slit-shaped opening 16 in the frame 4. In the case of the embodiment shown in FIG. 8, the slit-shaped opening 6 is provided only on one side in the double-row frame. The arrangement according to the invention makes it possible to attach individual plugs to the electromagnetic switch. The individual plugs are inserted into the frame, which is held via the connection of the appliance, until it hits the catch. When pulling the plugged wires together from the appliance, the individual plugs 5 are held together by the catches and pulled together, so that the arrangement of the connection points of the appliance is maintained. Providing a plurality of frames in one electric appliance enables appropriate coding even when the positions of the wirings 8 may be confused.

[Brief description of drawings]

1 is a partially exploded perspective view of an electromagnetic switch provided with a frame and a unit plug to be inserted, FIG. 2 is a plan view of an embodiment of the frame, and FIGS. 3 and 4 are respectively in FIG. Sectional and side views of the frame, FIGS. 5, 6, and 7 are plan views, sectional views and side views of the frame of different embodiments, and FIG. 8 is a plan view of the frame of yet another embodiment. Is. 1: Electromagnetic switch, 4: Frame, 5: Unit plug, 6: Insulation bush, 8: Wiring, 11: Locking protrusion, 13: Side wall, 14: Locking arm, 15:
Insulation bush top edge.

Claims (5)

(57) [Claims] 1. A device for connecting an electrical appliance, comprising a row of unit plugs (5) which are provided with wires (8) and which are pluggable and locked in the mating contacts (9). In the plug connection device, a unit plug (5) is connectable to a mating contact (9) via a frame (4) which releases the mating contact (9) of an electric appliance, and the unit plug (5). Electricity characterized in that (5) is locked together with this unit plug in a frame (4) separable from the electric appliance (1) by locking parts (11, 13, 14, 15). Device plug connection device. 2. Locking portions (11, 13) are formed on the unit plug (5) and the frame (4) so that the unit plug (5) can be pulled out against a locking resistance without a tool. The plug connecting device according to claim 1, wherein 3. A plug connecting device according to claim 1, wherein the unit plug (5) is held by an insulating bush (6). 4. A plurality of frames (4) are provided for one electric appliance (1), as claimed in any one of claims 1 to 3. Plug connection device. 5. On the opposite side of the frame (4) or instrument (1),
The plug connecting device according to claim 3 or 4, further comprising a locking arm (14) for the insulating bush (6), which is accessible from the outside.