JPH0643963U - Electromagnetic switch - Google Patents

Abstract

(57) [Summary] [Purpose] For electromagnetic switches with fuses, facilitates assembly work and fuse replacement work. [Structure] On the same side of the switch case 2, a connector mounting portion 4, lead wire connecting terminals 5 and 6, a mounting portion 8 of a fuse 7 for connecting to a circuit, and a mounting portion 10 of a spare fuse 9 are provided. The switch case 2 integrally covers the lead wire connection terminals 5 and 6, the fuses 7 and 9, and the fuse mounting portions 8 and 10, and forms a lead wire lead-out gap S between the switch case 2 and the switch case 2. An electromagnetic switch 1 in which a cover 21 is detachably provided, and a cover 21 is provided with a connector insertion portion 21c for penetrating a connector 3 connected to a connector attachment portion 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electromagnetic switch with a fuse used in, for example, a starting circuit of a vehicle engine.

[0002]

[Prior art]

 An example of this type of electromagnetic switch is described in Japanese Patent Publication No. 1-9075.

The electromagnetic switch described in the above publication has a coil, a plunger that reciprocates by the action of a coil and a spring, and functional parts such as contacts that are interrupted as the plunger moves. , One side of the case is provided with a fixed contact member to which a cable from a battery or a starter motor is connected, a terminal connected to each terminal of the coil, and a fuse or a fuse holder in which the terminal is assembled. A spare fuse is attached to the other surface of the. A connector that communicates with an external circuit is connected to each terminal.

Conventionally, in the electromagnetic switch as described above, rubber boots for insulation are attached to each fixed contact member to which a cable is connected, and a fuse cover is attached to the fuse holder. Was being done.

[0005]

[Problems to be solved by the device]

 However, in the conventional electromagnetic switch as described above, the assembly work is complicated because the rubber boots attached to the individual fixed contact parts and the protective cover for attaching the fuse holder are used. In addition to the above problem, in the case, a spare fuse was mounted on the opposite side of the fuse connected to the circuit, so it is difficult to replace the fuse depending on the mounting position of the electromagnetic switch. Therefore, there has been a demand for improvement to eliminate problems in the assembly work and fuse replacement work.

[0006]

[The purpose of the device]

 The present invention has been made in view of the above conventional circumstances, and an object of the present invention is to provide an electromagnetic switch that facilitates assembly work and fuse replacement work.

[0007]

[Means for Solving the Problems]

 The electromagnetic switch according to the present invention is an electromagnetic switch equipped with a fuse that is connected between a power source and a load as well as connected to an external circuit such as a power source or a load. Connect the connector mounting part that connects to the external circuit, the terminal that connects the lead wire that also connects to the external circuit, the fuse mounting part that connects between the power supply and the load, and the spare fuse mounting part that is insulated from the circuit. A cover that integrally covers the lead wire connection terminal, each fuse, and fuse mounting portion and that forms a gap for leading out a lead wire with the switch case is detachable. In addition to the above-mentioned configuration, the cover is provided with a connector insertion portion that makes a connector connected to the connector attachment portion into a penetrating state. And a means for solving the problems.

[0008]

[Function of the device]

 In the electromagnetic switch according to the present invention, the lead wire connecting terminal, the fuse and the spare fuse connected to the circuit are all covered by one cover detachably provided on the switch case, and the terminal is used without using other parts. And fuses are protected.

Further, in the above electromagnetic switch, the connector mounting portion, the lead wire connecting terminal and each fuse are on the same surface side of the switch case, and the connector is attached to the connector mounting portion through the connector insertion portion of the cover, and Since the connected lead wire is led out from the gap between the cover and the switch case, it is possible to remove the cover with the connector attached and without interfering with the lead wire. The fuses are attached and removed in the same direction, and the removed cover is held with the connector insertion part hooked on the connector cable.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

The electromagnetic switch 1 shown in FIG. 1 is used for a starting circuit of a vehicle engine, and is provided in a switch case 2 by the action of a coil 51, a coil 51 and a spring shown in the circuit of FIG. Functional parts such as a reciprocating plunger 52, a movable contact point 53 attached to the plunger 52, and fixed contacts 54 and 55 intermittently connected by the movable contact 53 are incorporated, and the same surface of the switch case 2 (see FIG. 1). On the upper surface side), the mounting portion 4 of the connector 3, the two lead wire connection terminals 5 and 6, the mounting portion 8 of the fuse 7 connected to the circuit, and the mounting of the spare fuse 9 that is insulated from the circuit Section 10.

As shown also in FIG. 4, the switch case 2 is provided with terminals 5 and 6 for connecting both lead wires and a mounting seat 12 of the fuse holder 11 on the upper surface thereof for connecting both lead wires. In addition to having a standing wall portion 13 between the terminals 5 and 6, terminals 14 and 15 connected to each end of the coil 51 are in a protruding state on the mounting seat 12, and are fitted in the lower case holder 18. To be done.

One lead wire connection terminal 5 is connected to one movable contact point 54 in the case, and the lead wire 16 from the starter motor 56 is screwed to the outside, and the other end is connected to the other. The lead wire connecting terminal 6 is connected to the other movable contact 55 in the case, and the lead wire 17 from the power source 57 is screwed to the outside.

The fuse holder 11 has the connector mounting portion 4 in the center and the mounting portions 8 and 10 of the fuses 7 and 9 on both sides thereof, and the mounting portion of the fuse 7 connected to the circuit. 8 includes a first connecting member 19 having a contact piece 19a for the lead wire connecting terminal 5 on the power supply side, and two terminals 20a and 20b which are inserted into the connector mounting portion 4 from the lower side. The second connecting member 20 is assembled, and is fixed to the mounting seat 12 in a manner that the terminals 14 and 15 of the switch case 2 are inserted into the connector mounting portion 4.

That is, in this embodiment, the switch holder 2 is provided with the connector mounting portion 4 and the fuse mounting portions 8 and 10 by the fuse holder 11 described above. As shown in FIG. 5, the connector 3 connects the terminals 14 and 15 of the switch case 2 to external coil power sources 57a and 57b, and connects the terminals 20a and 20b of the second connecting member 20 to other external terminals. Connected to the electrical component 58 of.

The switch case 2 is detachably provided with a cover 21 that integrally covers the lead wire connection terminals 5 and 6, the fuses 7 and 9, and the fuse mounting portions 8 and 10. .

The cover 21 is formed of an insulating material such as synthetic resin, and has a box shape that opens downward, and has a pair of fuse accommodating portions 21a and 21a on one side in a protruding state. The connector mounting portion 4 is exposed in a state of being viewed from above, and a bent strip-shaped connecting portion 21b is continuously provided between the tip ends of the fuse accommodating portions 21a, 21a. As a result, a connector insertion portion 21c that makes the connector 3 in a penetrating state is formed inside thereof.

Further, the cover 21 has a hanging portion 21d on the opposite side of the connector insertion portion 21c, and between the hanging portion 21d and the switch case 2 and the case holder 18, a lead wire for downward opening is provided. And a hanging wall portion 21e that abuts the upper end of the standing wall portion 13 of the switch case 2 on the inner lower surface of the central portion. Pieces 21f and 21f are provided.

Both of the operation pieces 21f have an intermediate portion in the up-down direction supported by the case main body portion, and at the lower end portion thereof, an engaging portion 21g with a protrusion 22 protruding from the side surface of the switch case 2. ing.

In the electromagnetic switch 1 having the above configuration, the cover 21 is attached to the switch case 2, and then the connector 3 is attached to the connector attachment portion 4 through the connector insertion portion 21c (state of FIG. 2).

As a result, in the electromagnetic switch 1, all of the lead wire connection terminals 5, 6 and the fuses 7, 9 and the fuse mounting portions 8, 10 are provided by the cover 21 detachably provided on the switch case 2. The lead wire connecting terminals 5 and 6 and the fuses 7 and 9 are protected without being covered with other insulating parts such as rubber boots. Especially, between the lead wire connecting terminals 5 and 6, The upright wall portion 13 of the switch case 2 and the hanging wall portion 21e of the cover 21 that abuts on the upright wall portion 13 ensure more reliable insulation between them.

In addition, when the fuses 7 and 9 are replaced, the electromagnetic switch 1 is provided with the projection 22 of the switch case 2 by pinching the upper end portions of both operation pieces 21f and 21f of the cover 21 from the left and right sides. The engagement with the engagement portion 21g is released, and the cover 21 is removed with the connector 3 still connected as shown in FIG.

At this time, in the cover 21, the connector 3 is attached to the connector mounting portion 4 through the connector insertion portion 21 c of the cover 21, and the lead wires 16 and 17 connected to the lead wire connecting terminals 5 and 6 are covered. Since it is led to the outside through the gap S between the switch 21 and the switch case 2, it can be removed with the connector 3 attached and without interfering with the lead wires 16 and 17.

In the electromagnetic switch 1, since the connector mounting portion 4, the lead wire connecting terminals 5 and 6 and the fuses 7 and 9 are on the same side of the switch case 2, the fuses 7 and 9 are attached and detached. The replacement work is performed from the same direction, and the removed cover 21 may be lost because the connecting portion 21b forming the connector insertion portion 21 is caught by the cable 30 of the connector 3. I have no worries.

In the above embodiment, the switch holder 2 is provided with the connector mounting portion 4 and the fuse mounting portions 8 and 10 by the fuse holder 11, but these mounting portions are integrated with the switch case. It is also possible to provide. Further, the details of the structure of the electromagnetic switch are not limited to those in the above-described embodiment, and the forms of the switch case and the cover can be changed appropriately.

[0026]

[Effect of device]

 As described above, according to the electromagnetic switch of the present invention, it is possible to cover all the lead wire connection terminals and each fuse and to protect them well by simply attaching one cover to the switch case. The number of parts and man-hours can be reduced, and assembly workability can be greatly improved.

When replacing the fuse connected to the circuit with the spare fuse, the cover can be removed regardless of the connector or the lead wire, and both fuses should be provided on the same side of the switch case. Therefore, the fuse can be easily replaced even when the electromagnetic switch is assembled to the specified structure, and the removed cover can be hooked to the connector cable by the connector insertion part. Therefore, there is no fear that the cover will be lost, and the cover can be easily attached again.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an electromagnetic switch according to an exemplary embodiment of the present invention.

FIG. 2 is a side view of the electromagnetic switch with a cover and a connector attached.

FIG. 3 is a side view of the electromagnetic switch with a cover removed.

FIG. 4 is an exploded perspective view illustrating a procedure for assembling the electromagnetic switch.

FIG. 5 is a circuit diagram illustrating a starting circuit of a vehicle engine and an electromagnetic switch.

[Explanation of symbols]

 1 Electromagnetic switch 2 Switch case 3 Connector 4 Connector mounting part 5, 6 Lead wire connection terminal 7 Fuse 8 Fuse mounting part 9 Spare fuse 10 Spare fuse mounting part 16, 17 Lead wire 21 Cover 21c Connector insertion part S Gap

Claims (1)

[Scope of utility model registration request] 1. An electromagnetic switch equipped with a fuse connected between an external circuit such as a power supply and a load and connected between the power supply and the load, wherein a connector that communicates with the external circuit is provided on the same side of the switch case. The switch case is equipped with a mounting portion, a terminal for connecting a lead wire which also leads to an external circuit, a mounting portion for a fuse connected between a power source and a load, and a mounting portion for a spare fuse in an insulated state with the circuit. A cover that integrally covers the lead wire connection terminal, each fuse, and the fuse mounting portion and forms a gap for leading out the lead wire with the switch case is detachably provided, and the connector mounting portion is provided on the cover. An electromagnetic switch comprising a connector insertion portion that makes a connector connected to the connector into a penetrating state.