JP3062112U - Interlock mounting structure of electromagnetic contactor - Google Patents

Abstract

(57) [Problem] To provide an interlock mounting device between two electromagnetic contactors for the purpose of forward / reverse operation of a load, without removing an electromagnetic contactor already mounted on a mounting surface. We propose the contents that can easily install the interlock mounting device. SOLUTION: An interlock having a structure in which a connector having a fitting piece on one of both side faces and an engagement piece provided on the other side face of the connector is engaged with an engagement recess on both sides of an interlock unit. In the mounting device, the engaging piece of the connector is formed in an L shape, and the fitting piece of the connector is a projecting portion provided with a step on both sides, and the projecting portion is formed in a fitting recess on the side surface of the electromagnetic contactor. In addition to the fitting, the engagement pieces of the connector are engaged with the engagement recesses on both sides of the interlock unit.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an electromagnetic contactor used for opening and closing an electric circuit, and relates to a structure for connecting and fixing an interlock mounting device sandwiched between two electromagnetic contactors when an induction motor is operated in a forward / reverse direction.

[0002]

[Prior art]

 Until now, a single operation of one electromagnetic contactor has been used for remodeling of the control panel, etc. No. 2,065,487, the structure is such that the engagement piece of the connector is inserted from the bottom side of the electromagnetic contactor into the engagement groove of the electromagnetic contactor so as to be inserted. The existing electromagnetic contactor had to be removed from the control panel mounting surface, and the interlock mounting device had to be mounted on two electromagnetic contactors.

[0003] However, if wiring is already performed by this method, the work amount is considerably affected. Therefore, the electromagnetic contactor already mounted on the control panel mounting surface must not be removed, and the interlock mounting device must be removed. It was hoped that it could be easily installed.

[0004]

[Problems to be solved by the invention]

 For the purpose of forward / reverse operation of the load, the interlock mounting device between the two electromagnetic contactors has a structure that is strong against external forces, and due consideration is given to the ease of assembly when modifying the control panel. We propose a method to easily install the interlock mounting device without removing the electromagnetic contactor already mounted on the control panel mounting surface.

[0005]

[Means for Solving the Problems]

 An interlock mounting device having a structure in which a connector having a fitting piece on one of both sides and an engagement piece on the other side of the connector engages with an engagement recess on both sides of the interlock unit. The engaging piece of the connector is formed in an L-shape, and the fitting piece of the connector is a projecting portion having a step on both sides, and the projecting portion fits into the fitting recess on the side surface of the electromagnetic contactor. The engagement piece of the connector is adapted to engage with the engagement recesses on both sides of the interlock unit.

[0006]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes an interlock unit which constitutes an interlock mounting device for preventing simultaneous insertion of two electromagnetic contactors, and has a structure in which a connecting rod 1b moves downward from the center of the window 1a. . A recess is provided inside the center of both sides of the interlock unit 1, a straight portion 1 c is provided vertically below the recess, and a projection-like engaging portion 1 d is provided above the straight portion 1 c. Reference numeral 1e denotes a protrusion for fitting into the groove on the side surface of the electromagnetic contactor.

[0007] Reference numeral 2 denotes a connector. An interlock unit is provided on the inner side of the upper end of the L-shaped elastic portions 2b, 2b which are inclined inward between the overhangs 2a on both sides of the connector 2 and the overhangs 2a, 2a. Beak-shaped engaging portions 2c, 2c, which are engaged with the first engaging portions 1d, 1d by a bending force, are provided. The overhang portion 2a is provided with a substantially stepped portion on the upper side for positioning in order to facilitate installation in a space provided inside a lower portion on both sides of the electromagnetic contactor.

To configure the interlock mounting device of the present invention, as shown in FIGS. 4 and 5, the interlock unit 1 is assembled so as to be clamped from below the interlock unit 1 by the elastic portions 2 b and 2 b of the connector 2. . At this time, the engaging portions 2c, 2c of the elastic portions 2b, 2b are locked by the linear portions 1c, 1c of the interlock unit 1.

Reference numeral 3 denotes an electromagnetic contactor, and a space 3a is formed inside the lower part on both sides of the electromagnetic contactor 3 by a substantially stepped end 3b. 3c is a groove for fitting the projection 1e of the interlock unit 1 described above.

The connector 2 is inserted from below the interlock unit 1 so as to be sandwiched between the elastic portions 2b and 2b, and is engaged with the linear portions 1c and 1c of the interlock unit 1 by the engagement portions 2c and 2c. In the locked state, as shown in FIGS. 7 and 9, for example, the connecting rod 1b of the interlock unit 1 is attached to the side of the electromagnetic contactor 3 on the left side of FIG. 3d. At this time, the protrusions 1e, 1e of the interlock unit 1 are fitted into the grooves 3c, 3c of the electromagnetic contactor 3. The two electromagnetic contactors 3, 3, which are connected by a mechanical interlock mounting device, are located below the space portions 3a, 3a formed by the left and right ends 3b, 3b, respectively, as viewed in FIG. positioned . In the above state, the upper ends of the electromagnetic contactors 3, 3 are fixed but are not connected to each other.

Further, as shown in FIGS. 8 and 10, the elastic portions 2b, 2b of the connector 2 are lifted above the two electromagnetic contactors 3, 3, and the engaging portions 2c, 2c are engaged with the interlock unit 1. It is engaged with the joints 1d and 1d. At this stage, both side surfaces of the side portion 2a are inserted into the spaces 3a, 3a in the ends 3b, 3b, and the two electromagnetic contactors 3, 3 and the interlock attaching device are completely fixed. Becomes The interlock mounting device of the present invention comprises an extension of the interlock unit 1 at the upper end of the electromagnetic contactor 3 and a connector integrated with the interlock unit 1 at a space at the lower end of the electromagnetic contactor 3. Since it is locked by the portion 2a, the structure becomes strong against external force in the vertical and horizontal directions. As described above, for example, when an electromagnetic contactor is added at a position adjacent to an electromagnetic contactor mounted on a rail in a control panel to make a forward / reverse electromagnetic contactor with a mechanical interlock, the electromagnetic It can be easily done without removing the contactor.

[0012]

[Effect of the invention]

 From the side of the existing electromagnetic contactor, another electromagnetic contactor can be easily attached to the interlock mounting device, and the workability of the electromagnetic contactor for forward / reverse operation at the site of use is improved.

[Brief description of the drawings]

FIG. 1 is a side view of the interlock unit of the present invention.

FIG. 2 is a side view of the connector of the present invention.

FIG. 3 is a front view of the connector of the present invention.

FIG. 4 is a perspective view of the interlock mounting device of the present invention.

FIG. 5 is a diagram showing a state in which the interlock unit and the connector according to the present invention are assembled.

FIG. 6 is a perspective view of the electromagnetic contactor of the present invention.

FIG. 7 is a perspective view showing a state in which the electromagnetic contactor and the interlock attaching device of the present invention have been assembled.

FIG. 8 is a side view showing a state in which the interlock mounting device of the present invention is completely incorporated in an electromagnetic contactor.

FIG. 9 is a diagram illustrating a state in which the interlock mounting device has been incorporated into the electromagnetic contactor of the present invention.

FIG. 10 is a view showing a state in which the interlock attaching device is completely incorporated in the electromagnetic contactor of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Interlock unit 1a Window 1b Connecting rod 1c Linear part 1d Engaging part 1e Projecting part 2 Connector 2a Overhang part 2b Inverter 2c Engaging part 3 Electromagnetic contactor 3a Space part 3b End 3c Groove 3d Engaging part

Claims (1)

[Utility model registration claims] An electromagnetic contactor having an engagement groove on a side surface thereof; a connector having engagement pieces on one of both side surfaces for engaging with the engagement groove of the two electromagnetic contactors; An electromagnetic contactor for engaging the interlock unit integrally by engaging the engaging pieces on the other two side surfaces of the connector with the engaging concave portions on both sides of the interlock unit, and sandwiching the interlock unit between the two electromagnetic contactors. In the interlock mounting structure, the engagement piece of the connector is L
The connecting piece of the connector is formed as a projecting portion having a step on both sides. The projecting portion fits into a fitting recess on the side surface of the electromagnetic contactor, and the engaging piece of the connector is formed. Engages with engagement recesses on both sides of the interlock unit.