JPH0633636Y2 - Electromagnetic contactor coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a coupling device for coupling two electromagnetic contactors to each other to form a reversible electromagnetic contactor.

[Prior Art] FIG. 4 shows a rail-mounted reversible electromagnetic contactor formed by connecting two electromagnetic contactors. The electromagnetic contactors 1 and 2 sandwich an interlock unit 2. They are integrally connected by the connector 4. Here, the interlock unit 3 (FIG. 6) is a mechanical interlock device for preventing simultaneous insertion of two electromagnetic contactors, and the positioning protrusion 3a provided on the interlock unit 3 has an electromagnetic contactor 1 , 2 are engaged with engaging recesses 1b, 2b provided in the first and second positions, and are held at predetermined positions.

FIG. 5 shows the lower half of the reversible electromagnetic contactor of FIG. 4 in detail from the bottom side. Rail catching pieces 1c, 2c and sliders 1d, 2d are provided at the bottom of the electromagnetic contactors 1, 2. ing. The electromagnetic contactors 1 and 2 are attached to the support rails (not shown) by hooking the rail hooking pieces 1c and 2c on the support rails with the sliders 1d and 2d retracted, and then pushing the sliders 1d and 2d. Two engaging grooves 1a and 2a are provided on the side surfaces of the electromagnetic contactors 1 and 2, respectively.
The connector 4 (Fig. 7), which is provided with each strip and has engaging pieces 4a on both side surfaces corresponding to the engaging grooves 1a and 2a, is inserted between the electromagnetic contactors 1 and 2 to perform the connection. It is being appreciated. Electromagnetic contactor
Since the interlock unit 3 is sandwiched between the 1 and 2, the connector 4 is inserted from the bottom side of the electromagnetic contactors 1 and 2.

[Problems to be solved by the device]

There are electromagnetic contactors having a relatively low height and those having a high height, but the interlock unit 3 and the connector 4 are used commonly for them in order not to increase the number of parts.
The electromagnetic contactor shown in FIG. 4 above has a relatively small height. When the interlock unit 3 and the connector 4 shown in FIG. 4 are used in an electromagnetic contactor having a relatively high height as shown in FIG. 8, the interlock unit 3 and the connector are clearly seen from the figure. The positional relationship with is separated. For this reason, the connector 4 is used as an electromagnetic contactor.
The force of pinching the interlock unit 3 via the 1 and 2 becomes weak, and the electromagnetic contactors 1 and 2 are separated from each other with respect to the force in the arrow direction, and the positioning protrusion 3a of the interlock unit 3 is moved to the electromagnetic contactor 1. There is a risk that the interlock unit 3 may fall out of the engaging recesses 1b and 2b of the second unit. As a countermeasure against this, as shown in FIG. 9, if the connector 4 is brought close to the interlock unit 3 and the positional relationship between them is made the same as in the case of an electromagnetic contactor having a relatively small height, the above-mentioned problem is solved. In this case, since the connector 4 is inserted from the bottom surface side of the electromagnetic contactors 1 and 2, the connector 4 may move downward due to vibrations, etc. Therefore, as described above, the positioning of the interlock unit 3 is performed. The protrusion 3a is an electromagnetic contactor
There is a risk that the interlock unit 3 may fall out of the engaging recesses 1b and 2b of the clutches 1 and 2.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks of the conventional example, and to provide an electromagnetic contactor coupling device that can always maintain a stable electromagnetic contactor coupling state without increasing the types of parts. .

[Means for Solving the Problems]

According to the present invention, a connector having engaging pieces on both side surfaces is inserted from the bottom side between two electromagnetic contactors each having an engaging groove on a side surface, so that two electromagnetic contactors are inserted. In a coupling device for an electromagnetic contactor in which an interlock unit is sandwiched and integrally coupled, a hook having elasticity is provided at an upper end of at least one side face adjacent to both side faces on which engaging pieces of the connector are formed. The interlock unit is provided with an engaging portion to which the hook is locked.

[Action]

Since the connector is locked by the hook in the interlock unit sandwiched between the two electromagnetic contactors, the connector does not move due to vibration or the like, and the connector is always held at the predetermined position. It

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 respectively show an embodiment of the present invention. In FIGS. 1 to 3, the same parts as those in the conventional example shown in FIGS. 4 to 9 are designated by the same reference numerals. Detailed description is omitted.

In FIG. 1, a projection 30 is formed on each side surface adjacent to both side surfaces on which the positioning projection 3a of the interlock unit 3 sandwiched between the two electromagnetic contactors 1 and 2 is formed. As shown in FIG. 2, the protrusion 30 is composed of a slope 30a and a locking portion 30b, and the amount of protrusion increases as it goes upward. The connector 4 inserted from the bottom side of the two electromagnetic contactors 1 and 2 is provided with hooks 4b and 4b at the upper ends on the side surfaces adjacent to both side surfaces on which the engaging pieces 4a and 4a are formed. . Since the hooks 4b, 4b are integrally formed with the connector 4 made of synthetic resin, they can be elastically deformed.

Next, the assembly will be described. Two electromagnetic contactors 1, 2
After sandwiching the interlock unit 3 between the two, the engaging pieces 4a, 4a of the connector 4 are inserted into the engaging grooves 1a, 2a of the electromagnetic contactors 1, 2 from the bottom side of the two electromagnetic contactors 1, 2. Match and insert. When the connector 4 is pushed up toward the interlock unit 3, the hook 4b of the connector 4 contacts the slope 30a of the projection 30 of the interlock unit 3. When the connector 4 is further pushed up, the hook 4b is deformed so as to bend along the slope 30a, and when the hook 4b crosses over the slope 30a, the hook 4b is bent.
Returns to its original state and is caught by the locking portion 30b of the protrusion 30. This prevents the connector 4 from being coupled to the interlock unit 3 and moving downward due to vibration or the like. When removing the connector 4, by pushing the connector 4 downward with the free end (tip) of the hook 4b widening outward with a tool such as a screwdriver and disengaged from the locking portion 30b of the protrusion 30. Done.

[Effect of device]

As described above, according to the present invention, an elastic hook is provided at the upper end of at least one side surface adjacent to both side surfaces on which the engaging piece of the connector is formed, and the hook is provided on the interlock unit. By providing the engaging portion to be locked and locking the hook of the connector to the protrusion of the interlock unit, the connector can be coupled to the interlock unit, so that movement of the connector can be prevented. is there. This has the advantages that the interlock unit and the connector can be shared by the electromagnetic contactors of different heights, and the connected state of the electromagnetic contactors can be maintained reliably and stably.

[Brief description of drawings]

1 to 3 respectively show an embodiment of the present invention. FIG. 1 is a front view of a reversible electromagnetic contactor, FIG. 2 is a perspective view of an interlock unit, and FIG. 3 is a perspective view of a connector. Is. 4 and the following show a conventional example, FIG. 4 is a front view of a reversible electromagnetic contactor, FIG. 5 is a perspective view showing the lower half of FIG. 4 from the back side, and FIG. 6 is an interlock unit of FIG. FIG. 7, FIG. 7 is a perspective view of the connector of FIG. 4, FIG. 8 is a front view of a different conventional reversible electromagnetic contactor, and FIG. 9 is a front view of a different conventional example. 1,2 ... Magnetic contactor, 1a, 2a, ... Engaging groove, 30 ... Interlock unit, 30a ... Protrusion, 4 ... Connector, 4a ...
… Engagement piece, 4b …… Hook.

Claims (1)

[Scope of utility model registration request] 1. An interlock between two electromagnetic contactors, in which a connector having engaging pieces on both side surfaces is inserted from the bottom side between two electromagnetic contactors each having an engaging groove on a side surface. In a coupling device for an electromagnetic contactor, which is integrally coupled by sandwiching a unit, an elastic hook is provided at an upper end of at least one side surface adjacent to both side surfaces of the coupling element where the engaging pieces are formed, A coupling device for an electromagnetic contactor, wherein a locking unit is provided with an engaging portion for locking the hook.