JP2568780Y2 - Electromagnetic switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic switch which is used for connecting or disconnecting a circuit by bringing a movable contact into or away from a fixed contact by exciting or demagnetizing an exciting coil.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. 61-61738 discloses an electromagnetic switch for connecting or disconnecting a circuit by exciting or demagnetizing a solenoid coil.

[0003] The electromagnetic switch described in the above publication is
A hole-shaped fuse housing is provided outside the rubber body-side mounting member that houses the body of the electromagnetic switch, and a spare fuse is housed in the fuse housing. The hole diameter of the fuse accommodating portion was smaller than the size of the outer shape of the fuse, and the fuse was held by the elastic force of the fuse accommodating portion.

[0004]

2. Description of the Related Art However, in the above-described electromagnetic switch, the fuse is held in the fuse housing portion with elasticity having four sides of the fuse body of the fuse in the fuse housing portion, so that a spare fuse is used. At this time, there is a problem that it is not easy to remove from the fuse accommodating portion.

[0005]

The problem to be solved is that if a fuse is housed in a fuse housing portion provided on a rubber body mounting member, it is not easy to remove the fuse.
The point is that it lacks convenience.

[0006]

In the electromagnetic switch according to the present invention, a first case and a first case are assembled.
A second case, and a plunger housed in the first case and attracting and moving by excitation .
A solenoid having a solenoid power terminal disposed outside, a movable contact that moves with the plunger, and a first contact.
First and second fixed contacts housed in the case and electrically connected from the separated state by movement of the movable contact ;
Electrically connected to the fixed contact and arranged outside the first case;
First load connection terminal connected to the first load
And a first case electrically connected to the second fixed contact.
Power supply terminal, which is located outside the
Electrically connected to the terminal, disposed on the first case,
A power supply terminal on which the fuse connection is formed, a second load connection electrically connected to the second load are formed, and a fuse connection is formed on the first case.
And a second load connection terminal disposed on the first case.
Fixed, the solenoid power supply terminal and the second load connection terminal
A connector guide accommodating the second load connection portion;
Fuse connection portion of the feeding terminal, fuse the second load connection terminal
A fuse that accommodates the
Case and one of the fuse terminals
Electrically connected to the fuse connection and the other fuse end
Is electrically connected to the fuse connection of the second load connection terminal.
Connect the first fuse and the fuse terminal to the fuse
A second fuse to be located on the body and disposed on the second case
And an electromagnetic switch having a bottom portion of the second case.
On the surface, the thickness of the fuse body of the second fuse
With the same height as the bottom surface
Formed in the shape of a square hole, and a fuse of a second fuse at the end.
The fuse body has a fuse body contact portion with which the body contacts, and a second fuse is provided.
Fuse terminal insertion section for housing fuse terminals
And the bottom of the second case connected to the fuse terminal insertion portion.
A pair of holder side plates protruding from the bottom along the
Surrounded by the holder bottom plate connected to the end of the holder side plate
And the fuse body of the second fuse is housed therein.
A body insertion portion to be formed in the holder bottom plate of the main body insert portion
Between the pair of notches, the distance from the bottom of the tip is
Slightly less than the thickness of the fuse body of the second fuse
The second case
Elastically deformable in the direction away from the bottom to fuse terminals
Of the second fuse inserted into the fuse terminal insertion portion
A main body pressing portion for pressing the fuse main body toward the second case, and a distance from the fuse main body contact portion to the second fuse.
Project to a position slightly larger than the length of the fuse body.
Of the second fuse formed and housed in the main body insertion portion.
The fuse body is pushed toward the second case by the body
Can be locked to the end of the fuse body by being pressed
And characterized in that the structure <br/> formed which has a Do omission fuse holder comprising a stopper portion, molding a very easy, that fuse to provide an electromagnetic switch with detached easily fuse holder It achieves its purpose.

[0007]

In the electromagnetic switch according to the present invention, the fuse holder includes a fuse body of the second fuse.
The fuse body is inserted into
Pressing to the case side by the body holding part and the fuse body
Since the end is locked by the retaining portion, the fuse body of the second fuse is held in the main body inserting portion by the main body pressing portion and the retaining portion. Therefore, since the second fuse off the retaining portion is an end portion of the fuse body is removed from the fuse holder by pulling in a direction opposite to the pressing-side body holding portion, bullet four sides of the fuse body
It can be easily removed compared to one held sexually . Also, the fuse holder is located on the bottom surface of the second case.
The fuse terminal insertion part is formed in a square hole on the top, and the body is inserted
Section, body holding section, and retaining section are fuse terminals
It is connected to the insertion section. Therefore, the fuse holder is
It is formed by pure molding.

[0008]

1 to 7 show an embodiment of an electromagnetic switch according to the present invention.

The electromagnetic switch 1 shown in the figure mainly includes a solenoid 3, a movable contact 4, a first fixed contact 5,
The second fixed contact 6 is accommodated therein, the first load is a starter motor 60 for starting the engine, and the second load is an accessory part 61 such as a radio or an electric seat mounted on the vehicle. .

The solenoid 3 has flange portions 3a1, 3a provided at both ends of a bobbin 3a formed of resin.
A coil forming portion 3a3 is provided between a2,
A solenoid coil 3b around which a copper wire is wound is provided in the coil forming portion 3a3.

A plunger moving portion 3c having a round hole shape is formed at the center of the coil forming portion 3b, and a plunger 3d having a cylindrical shape and made of a magnetic material is accommodated in the plunger moving portion 3c. A first return spring 3e is locked in the plunger moving portion 3c at the base end side of the plunger 3d, and the plunger 3d is directed upward in FIG. 1 by the elastic repulsive force of the first return spring 3e. Being energized.

As shown in FIG. 2, one of the upper flange portions 3a1 and 3a2 of the flange portions 3a1 and 3a2 is provided.
Solenoid power supply terminals 3f and 3g to which the ends of the copper wires of the solenoid coil 3b are connected are attached to the upper surface of a1. The solenoid power supply terminals 3f and 3g are connected to a fuse case fixing portion 2a9 formed outside the case 2. Projecting at A solenoid frame 3h is mounted outside the one flange 3a1 and the other flange 3a2.

[0013] Solenoid frame 3h frame core 3h1 forming a U-shaped, the side plate 3 with the frame core 3h1
h2, 3h2, the frame flange 3 of which the end portion comes into contact with
h3, the frame core 3h1 and the frame flange 3h3 are both made of a magnetic material.

At the center of the frame flange 3h3, there is provided a plunger hole 3h4 formed in a round hole shape corresponding to the plunger moving portion 3c of the bobbin 3a, and the other flange portion 3a2 abuts on the frame core 3h1. And the bobbin 3a in which one flange portion 3a1 is in contact with the frame flange 3h3 is
h1 and the frame flange 3h3.

On the other hand, as shown in FIG. 2, the base end of a slider 7 in the form of a piece is in contact with the distal end of the plunger 3d, and a contact holding portion 7a provided at the center of the slider 7 has a disk. A movable contact 4 having a shape is fixed.

As is apparent from FIG. 1, a second return spring 8 is provided above the contact holding portion 7a of the slider 7.
Is locked at one end, and the other end of the second return spring 8 is locked to the case 2. The slider 7 is moved downward by the elastic repulsive force of the second return spring 8 in FIG. Is being urged towards.

On the other hand, as shown in FIG. 1, the case 2 has a first case 2a made of resin having a U-shaped cross section and a first case 2a.
And a cylindrical slider support portion 2a1 for supporting the slider 7 at the center of the first case 2a, which is formed in a thick wall, and closing the open end of the case 2a. And a spring locking portion 2a2 for locking the other end side of the second return spring 8 is provided below the slider supporting portion 2a1 and the spring locking portion 2a2 in the drawing. The slider 7 moves upward and downward in the round hole-shaped slider moving section 2a3.

The first case 2a is provided with a fixed contact mounting portion 2a4 having a larger hole diameter than the slider moving portion 2a3 below the slider moving portion 2a3 in FIG. 2a4 of fixed contact mounting part
The lower end of FIG. 1 corresponding to the movable contact 4 is fixed at the base ends of a plate-like first fixed contact 5 and a second fixed contact 6, respectively. Second fixed contact 6
Project from the movable contact 4 at a position close to the slider 7 side.

The first fixed contact 5 is connected to a first load connection terminal 9 fixed to a terminal support portion 2a10 which protrudes upward in FIG. 2 in a rectangular shape in the first case 2a. I have . The second fixed contact 6 is connected to a power terminal 10 fixed to a terminal support 2a10 separated from the first load connection terminal 9.

[0020] The first load connection terminals 9, are shown in Figure 4
That way, connected to the starter motor 60 is a first load
The connected connection line 60a is screwed so as to be electrically connectable.
is there. To the power supply terminal 10, as it will be shown in Figure 4, the power supply
The connection line 63a connected to 63 can be electrically connected.
It has been stopped.

As is clear from FIG. 3, the fuse case fixing portion 2a9 of the case body 2a has a connector guide 13 in which a second load connection terminal 11 and a power supply terminal 12 are inserted, and a fuse case 14 Has been fixed.

Connector guide 13 and fuse case 14
The connector guide 13 is formed with a rectangular cylindrical connector insertion hole 13a, and the fuse case 14 is formed with a rectangular hole-shaped fuse holding portion 14a. .

The second load connection terminal 11 has a second
The load connection portions 11a, 11a are inserted into the connector insertion holes 13a, and the fuse connection portions 11b provided in the second load connection terminals 11 are connected to the fuse holding portions 14a.
The solenoid power terminals 3f and 3g are also inserted into the connector insertion hole 13a.

A power terminal connecting portion 12a provided on the power supply terminal 12 is connected to a power terminal 10 fixed to a terminal supporting portion 2a10 of the case body 2a, and a fuse connecting portion 12b is connected to the fuse terminal 12b. Holder 1
4a, the second load connection terminal 1
Fuse terminals 15a, 15a provided in the first fuse 15 are attached to the first fuse connection portion 11b and the fuse connection portion 12b of the power supply terminal 12. The first fuse 15 is held by inserting the fuse body 15b into the fuse holding portion 14a of the fuse case 14.

The second load connecting portions 11a of the second load connecting terminal 11 are connected to the connector 64 of the connector guide 13 which holds the wiring 61a connected to the accessory component 61 as the second load. Insertion part 13a
By being mounted inside, it is connected to the second load 61. The connector 64 has a solenoid power supply terminal 3f, 3
A solenoid power supply line 65 connected to g is also held.

In addition, a flat bottom 2b provided in the second case 2b attached to the end of the first case 2a.
1, the peripheral wall 2a7 of the first case 2a
A first case fixing portion 2b2 corresponding to an end of the second case 2b is provided on the lower surface of the bottom portion 2b1 for mounting a second fuse 17 as a spare fuse. Are provided integrally.

As is clear from FIGS. 1, 5, 6, and 7, the fuse holder 16 is provided with a main body insertion portion 16a formed in a rectangular hole shape.

The main body insertion portion 16a is provided in the second case 2b.
Holder side plate 16a1,16a1 the bottom protrudes downward of along and in Figure 1 of the bottom 2b1 to 2b1 All the holder-side
Holder bottom plate 1 connected to the ends of plates 16a1 and 16a1
6a2, and the holder bottom formed on the right side of the fuse insertion opening 16a3 in FIG.
Notches 16a4, 16a4 cut into a rectangular shape in the plate 16a2.
Body pressing portion 16a5 protruding thin shape toward the right side in the figure is provided through. This body holding part 16a
The size at which the tip of the protrusion side of No. 5 is separated from the bottom 2b1 is the second
5 is set to be slightly smaller than the thickness of the fuse body 17a provided in the fuse 17, and the tip is the upper side in FIG. 5 and the opposite side to the lower case 2 in FIG. Slightly elastically deformed.

Further, near the left end of the main body insertion portion 16a in FIG. 1, the height of the second fuse 17 is smaller than the height inside the main body insertion portion 16a, and the second fuse 17 is located at the front end of the fuse main body 17a. A fuse terminal insertion portion 16a6 having a height dimension smaller than the thickness dimension is provided,
The fuse terminal insertion portion 16a6 is connected to the main body insertion portion 1 on the other hand.
A fuse body contact portion 16a7, which communicates with the inside of the main body 6a and communicates with the outside on the other side and has a flat shape, is formed on the side of the main body insertion portion 16a.

The lower surface of the bottom portion 2b1, which is slightly separated from the fuse insertion opening 16a3 to the right side in FIG. 1, slightly protrudes downward in the figure and has a trapezoidal cross section. 16a8 are provided. The length from the retaining portion 16a8 to the fuse body contact portion 16a7 is set to be slightly larger than the length of the second fuse 17 in the fuse body 17a.

Here, as shown in FIG. 5, the fuse terminals 17b, 17b provided on the fuse body 17a of the second fuse 17 are placed first through the fuse insertion opening 16a3 of the body insertion portion 16a. As shown in FIG. 1, the fuse terminals 17b, 17b are inserted into the fuse terminal insertion portions 16a6, and the fuse body 17a pushes down the body holding portions 16a5 toward the lower side in FIG. It is inserted into the main body insertion portion 16a.

As the fuse main body 17a is inserted into the main body insertion portion 16a, when the fuse main body 17a comes into contact with the fuse main body contact portion 16a7, the end of the fuse main body 17a is locked by the retaining portion 16a8. You.

As a result, the fuse body 17a is pressed toward the case 2 by the body holding portion 16a5 while being in contact with the fuse body contact portion 16a7 on the one hand and being locked on the retaining portion 16a8 on the other hand. 16 is securely held.

In the electromagnetic switch having such a structure, the wiring 61a connected to the accessory part 61 and the connector 64 holding the solenoid power supply line 65 are mounted on the connector insertion opening 13a of the connector guide 13, so that the wiring 61a is The solenoid power supply line 65 is connected to the second load connection terminal 11 and the solenoid power supply terminals 3f and 3g, respectively.

Then, by inserting the first fuse 15 into the fuse holding portion 14 a of the fuse case 14, the power supply terminal 12 is connected to the second power supply terminal 12 through the first fuse 15.
Is connected to the load connection terminal 11.

When a switch (not shown) is switched to supply a solenoid driving current from the solenoid power supply line 65 to the solenoid power supply terminals 3f and 3g,
Since the solenoid coil 3b is excited, a magnetic flux passing through the frame core 3h1 , the frame flange 3h3 , the plunger 3d , and the frame core 3h1 is generated, and the plunger 3d
Is sucked and moved downward in FIG. 1 against the elastic repulsive force of the first return spring 3e.

When the plunger 3d is attracted and moved downward in FIG. 1, the slider 7 moves downward in FIG. 1 by the elastic restoring force of the second return spring 8, so that the movable contact 4 is brought into contact with the first fixed contact 5 and the second fixed contact 6, and since the movable contact 4 comes into contact with both fixed contacts 5, 6, the power source 6 connected to the first fixed contact 6
Since the current 3 is supplied to the starter motor 60, the starter motor 60 is rotated.

When the switch is returned, the solenoid coil 3b is demagnetized because the current for driving the solenoid is not supplied, so that no magnetic flux is generated, and the plunger 3d is caused by the elastic restoring force of the first return spring 3e. It returns and moves toward the upper side in FIG. Plunger 3d
The movable contact 4 is moved back to the upper side in FIG. 1 by moving the movable contact 4 to the first fixed contact 5.
In addition, the supply of the current from the power supply 63 to the starter motor 60 is stopped at a distance from the second fixed contact 6, and the starter motor 60 is stopped.

In the event that the first fuse 15 is blown out, the main body holding portion 16a5 of the fuse holder 16 is opened.
Is pulled down toward the lower side in FIG. 1 opposite to the case 2, the fuse body 17 a of the second fuse 17 is pulled down.
Since the lock from the retaining portion 16a8 is released, the second fuse 16 removed from the fuse holder 16 can be easily removed from the main body insertion portion 16a, and the first fuse 16 removed from the fuse holding portion 14a of the fuse case 14 can be removed. The replacement with the fuse 15 restores the normal state.

In the embodiment of the present invention, the fuse holder 16 is formed integrally with the second case 2b. However, the fuse holder 16 is not formed integrally with the second case 2b.
It is needless to say that the present invention can be implemented in the same manner even in the case where the screw is screwed into the device.

[0041]

As described above , according to the electromagnetic switch according to the present invention, the fuse holder of the second fuse is inserted into the main body insertion portion so that the fuse main body is held in the main body holding portion. As a result, the fuse body of the second fuse is held in the main body insertion portion by the main body holding portion and the retaining portion. Therefore, by pulling up the main body holding portion in the direction opposite to the pressing side, the end of the fuse main body comes off the retaining portion and the second fuse is removed from the fuse holder.
The fuse body can be easily removed as compared with the case where the four sides of the fuse body are elastically held. Therefore, an excellent effect of being easy to use is exhibited. In the fuse holder, a fuse terminal insertion portion is formed in a square hole shape on the bottom surface of the second case, and each of the main body insertion portion, the main body holding portion, and the retaining portion is connected to the fuse terminal insertion portion. ing. Therefore, since the fuse holder is formed by simple molding, there is an excellent effect that the number of steps can be reduced without performing complicated molding.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of an embodiment of an electromagnetic switch according to the present invention.

FIG. 2 is an external perspective explanatory view showing an assembling relationship of components of a case portion of the electromagnetic switch shown in FIG. 1;

3 is an external perspective explanatory view showing an assembling relationship of a fuse case to a case in the electromagnetic switch shown in FIG. 1;

FIG. 4 is a circuit configuration diagram illustrating an internal circuit of the electromagnetic switch shown in FIG.

FIG. 5 is an external perspective view for explaining an assembling relationship between a fuse holder and a second fuse in the electromagnetic switch shown in FIG. 1;

FIG. 6 is a side view of the fuse holder shown in FIG.

FIG. 7 is a bottom view of the fuse holder shown in FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 electromagnetic switch 2a first case 2b second case 3 solenoid 3d plunger 3f solenoid power terminal 3g solenoid power terminal 4 movable contact 5 first fixed contact 6 second fixed contact 9 first load connection terminal 10 power terminal 11 Second load connection terminal 11b Fuse connection part 12 Power supply terminal 12b Fuse connection part 13 Connector guide 14 Fuse case 15 First fuse 16 Fuse holder 16a Main body insertion part 16a1 Holder side plate 16a2 Holder bottom plate 16a4 Notch 16a5 Main body holding part 16a6 Fuse terminal insertion portion 16a7 Fuse body contact portion 16a8 Retaining portion 17 Second fuse 17a Fuse body 17b Fuse terminal 60 (First load) Starter motor 61 (Second load) Accessory parts

Claims (1)

(57) [Scope of request for utility model registration] A first case, a second case assembled to the first case, and a plunger housed in the first case and attracting and moving by excitation ; Placed outside
A solenoid having a solenoid power supply terminal; a movable contact that moves together with the plunger; first and second fixed members housed in the first case and electrically connected from a separated state by movement of the movable contact; A contact, a first case electrically connected to the first fixed contact;
Load connected to the first load and disposed outside the first load
A first case electrically connected to the connection terminal and the second fixed contact;
A power terminal connected to a power supply, and a power terminal electrically connected to the power terminal and disposed on the first case.
Power supply terminal on which the fuse connection is formed
And a second load connection portion electrically connected to the second load is formed, and a fuse connection portion is formed.
A second load connection terminal disposed on the first case, and a solenoid power supply terminal fixed on the first case;
For accommodating the second load connection portion of the second load connection terminal
Connector guide, fuse connection part of the power supply terminal, second load connection
Housing the terminal fuse connection part, the first fuse is attached
Fuse case and one of the fuse terminals is the fuse connection part of the power supply terminal
And the other fuse terminal is connected to the second load
A first fuse electrically connected to a fuse connection portion of the connection terminal; and a fuse case having a fuse terminal in the fuse body.
An electromagnetic switch having a second fuse to be placed on
Then, on the bottom surface of the second case, the fuse of the second fuse is provided.
A remote small height by thickness of over's body, the
It is formed in the shape of a square hole in the same direction as the surface of the bottom, and a second
Fuse body abuts fuse body abuts
And a fuse terminal of the second fuse is accommodated therein.
A fuse terminal insertion portion, and a
And a pair of second case protruding from the bottom along the bottom of the second case.
Of the holder side plate and a pair of holder side plates
And a second fuse formed around the bottom plate.
A main body insertion portion in which a fuse main body is housed, and the main body insertion portion
Between the notches formed in the bottom plate of the holder
The fuse body of the second fuse having a distance from the bottom of the second fuse
Projecting into a thin wall as slightly smaller than the thickness of
Out and elastically deform away from the bottom of the second case
Fuse terminal inserted into fuse terminal insertion part
The fuse body of the second fuse that has been set to the second case side.
A main body pressing part for pressing the, from the fuse body contact portion
The distance is longer than the length of the fuse body of the second fuse.
Projected to a slightly larger position and housed in the main unit insertion part
The fuse body of the second fuse
Is pressed to the second case side,
Electromagnetic switch, characterized in that it comprises a Hugh <br/> Zuhoruda comprising a lockable retaining portion on the end of's body.