JPH0150052B2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to electromagnetic switches.

(Prior art and its problems) Generally, in a type of motorcycle where the engine is started by a starter motor, an electromagnetic switch is operated by operating a starter switch attached to the handlebar. This allows the starter motor to be electrically connected to the battery to start the engine. The electromagnetic switch is usually provided independently, and is located between the carburetor and the air cleaner.
Alternatively, it may be placed at a suitable position, such as behind an air cleaner, where it will not interfere with engine accessories, with a vibration isolating member interposed therebetween.

By the way, the electromagnetic switch is located at a location where various engine accessories are arranged in a complicated manner, so for example, the capacity of engine accessories such as the air cleaner may change due to design changes, etc. In cases where the arrangement changes, etc.
When it is necessary to secure a space for arranging an electromagnetic switch and a space for wiring to the electromagnetic switch, it is often difficult to do so.

Therefore, the above problem is solved by integrally incorporating an electromagnetic switch on the top surface of the battery.

Incidentally, although consideration has been given to the location where the battery itself is attached to the vehicle body so that it is unlikely to be exposed to water, flooding due to water splashing up from the road surface during car washing or while driving is unavoidable. In particular, in the case of a type with an electromagnetic switch built into the battery, the electromagnetic switch leaks when exposed to water, which can easily cause failures such as the starting circuit not starting. Therefore, a completely waterproof electromagnetic switch and its installation method are required. Ru.

(Objective of the Invention) The present invention was made in view of the above circumstances, and an object of the present invention is to provide an electromagnetic switch that is completely waterproof and is not limited by installation space.

(Summary of the invention) In order to achieve the above object, the present invention includes:
After the main power supply circuit of the vehicle is closed by the key switch, the excitation coil is excited by the closing operation of the starter switch to attract the plunger, and the movable contact member interlocking with the plunger connects the battery side connection terminal and at least An electromagnetic switch is equipped with an electromagnetic switch body that starts the starter motor by electrically conducting the connection terminal on the starter motor circuit side. The electromagnetic switch main body is housed in a casing with its battery side connection terminal and starter motor circuit side connection terminal protruding outward from the casing, and a filler made of a synthetic resin member is housed in the casing. The electromagnetic switch main body is sealed and fixed in the casing by filling the electromagnetic switch main body with The casing is electrically and mechanically connected and fixed, and the electrically insulated support piece of the casing is fixed to the cathode terminal of the battery.

(Function) Since the electromagnetic switch main body is enclosed and fixed in the casing with a synthetic resin member, and is placed and fixed with the bottom surface of the casing facing the top surface of the battery, the electromagnetic switch main body is not exposed to water. Complete waterproofing can be ensured. In addition, by attaching the support piece at one end of the casing of the power connection terminal that protrudes outward from the casing to the electrode terminal of the battery, the electromagnetic switch can be installed on the battery, so there is no restriction on installation space and the installation condition is will also become stronger.

(Embodiment of the Invention) An embodiment of the present invention will be described below based on the accompanying drawings.

1 and 2 show a longitudinal sectional view and a bottom view of an electromagnetic switch to which the present invention is applied, and in both figures, 1 is an electromagnetic switch, which has an electromagnetic switch main body (hereinafter simply referred to as the main body) in a casing 2. 3, and the main body 3 is enclosed within the casing 2 by filling the epoxy resin 5 into the casing 2.

The casing 2 is made of a heat-resistant resin material such as polybutylene terephthalate (PBT), and has a narrow rectangular shape with the entire bottom open, and has a cathode terminal 7b of a battery 7, which will be described later, on the outside of one end surface in the longitudinal direction. A support piece 2a that is attached and supported by the support piece 2a extends substantially horizontally, and has an opening 2a on the other end surface in the longitudinal direction.
b is formed, and a projecting piece 2b' projects approximately horizontally outward from the upper end surface of the opening 2b. A ring-shaped reinforcing member 6 made of metal is fixed approximately at the center of the support piece 2a. The opening 2b is closed by a vertical piece 30a of a lid member 30 having an inverted L-shaped cross section;
The horizontal piece 30b of the lid member 30 is connected to the casing 2.
It is located at a predetermined distance from the lower end of the protruding piece 2b' at the other end. Engagement grooves 2f, 2 for engagement with a presser plate 28, which will be described later, are provided at predetermined locations on the inner wall of the casing 2.
f are formed to face each other (Fig. 2).

The main body 3 includes one fixed contact member 17 electrically connected to the battery 7 side, the other fixed contact member 18 electrically connected to the starter motor circuit side, and a bobbin 11 to which a yoke 15 is attached. An excitation coil 12 formed by winding a coil 12a, and a plunger slidably inserted into the excitation coil 12 and biased in one direction (opening direction, that is, leftward in FIG. 1) by a return spring 13. 14, and a movable contact member 16 that electrically turns on (closes) and off (opens) between the fixed contact members 17 and 18 in conjunction with the sliding movement of the plunger 14. .

The one fixed contact member (battery side connection terminal) 17 is formed by bending an elongated conductive metal plate, and includes a substantially horizontal first connection terminal 17a provided at one end in the longitudinal direction; A first mounting wall 17b that rises slightly upward approximately perpendicular to the connection terminal 17a.
The substantially horizontal first mounting wall 17c is connected via the substantially horizontal first mounting wall 17c.
and a substantially horizontal second mounting wall 17e that is connected to the mounting wall 17c via a second vertical wall 17d that falls downward substantially perpendicularly to the mounting wall 17c, and approximately midway in the longitudinal direction of the second mounting wall 17e. a second section, which is located in the middle part in the width direction, and is arranged in a row in a substantially vertically upward direction;
A connecting terminal 17f and a fixed contact 17 connected to the end of the second mounting wall 17e in a substantially vertical upward direction.
It has g.

The other fixed contact member (starter motor circuit side connection terminal) 18 is made by bending a conductive metal plate, and has a third connection terminal 18a provided vertically upward on one end side, and a third connection terminal 18a provided vertically upward on the other end side. A fixed contact 18b is provided vertically downward and connected to the third connection terminal 18a.

The excitation coil 12, the plunger 14, and the movable contact member 16 are assembled and housed in a space formed by a bottomed cylindrical case 8 and a cover 9 tightly fixed to the open end of the case 8. It is disposed inside the other end of the casing 2 from approximately the middle portion in the longitudinal direction.

The one fixed contact member 17 has its first connection terminal 17a projected outward from one end surface in the longitudinal direction of the casing 2, and the first mounting wall 17c is connected horizontally to the protruding piece 2b' of the casing 2 and the lid member 30. The first mounting wall 17c, the horizontal piece 30b, and the protruding piece 2b' are fixedly integrated with each other by rivets 31. Second vertical wall 17
d. The second mounting wall 17e, the second connection terminal 17f, and the fixed contact 17g are located inside the casing 2, and the cover 9 is located on the upper surface of the fixed contact 17g side from the approximately middle part in the longitudinal direction of the second mounting wall 17e. The lower surface of one end side is attached from approximately the middle part in the longitudinal direction of the cover 9.
It is attached and fixed by an eyelet 27 to a protruding piece 9b extending substantially horizontally from the lower part of one end surface of the holder.

The second connection terminal 1 of the one fixed contact member 17
7f is electrically connected to one end 20a of the electrical load terminal 20 of the vehicle via a fuse device 4, which will be described later, and the other end 20b of the electrical load side terminal 20 protrudes outward from the upper surface of the approximately intermediate portion in the longitudinal direction of the casing 2. has been done. Fixed contact 1 of this one fixed contact member 17
7g is inserted into the cover 9 through the hole 9a on the lower side thereof.

The other fixed contact member 18 is connected to the case 8
The third connection terminal 18a is located above and housed in the casing 2, and the third connection terminal 18a projects outward from the hole 2d on the top surface of the casing 2 and is connected to a starter motor circuit side connection terminal (not shown). Fixed contact 18
b is inserted into the cover 9 through the upper hole 9a' and faces the fixed contact 17g with a predetermined distance therebetween. The fixed contacts 17g and 18b are electrically connected to each other via the movable contact member 16.
That is, when the switch is turned on (closed), the plunger 1
4, the movable contact member 16 is attracted in the direction of the support piece 2a (rightward in FIG. 1), and the movable contact member 16
contacts the fixed contacts 17g and 18b, and these fixed contacts 17g and 18b are electrically connected.

The main body portion 3 is preassembled into a unit.

Note that the terminals of the coil 12a of the excitation coil 12 are connected to two coil terminals 24 (only one is shown) via connection pins (not shown), and the upper ends of both coil terminals 24 are connected to the outside of the top surface of the casing 2. The protruding end of one coil terminal 24 is connected to the starter motor circuit via a cord (not shown), and the protruding end of the other coil terminal 24 is connected to the main switch (both shown) via the cord and starter switch. (not shown) is connected to the load side circuit.

The fuse device 4 is constructed by covering a plurality of blade fuses 33a, 33b fitted and held in a fuse guide 32 on the upper surface of the casing 2 with a cover 34, and one connecting terminal 33a of the main side blade fuse 33a. ₁ is electrically connected to one end 20a of the electrical load side terminal 20 of the vehicle. And the other end 2 of this electrical load side terminal 20
0b is connected to the load side circuit of the vehicle via a cord and a main switch (both not shown).

Next, the assembly of the electromagnetic switch 1 having the above structure will be explained.

Fuse terminal 20 on the top surface of casing 2
Both ends 20a and 20b of the casing 2 are made to protrude outward through the holes, and the main body 3, which has been made into a unit as described above, is housed in the casing 2, and the third connecting terminal 18a of the other fixed contact member 18 is connected to the casing 2. The first connecting terminal 17a of one fixed contact member 17 is led out of the casing 2 through the opening 2b. Then, as described above, the first mounting wall 17c is sandwiched between the protruding piece 2b' of the casing 2 and the horizontal piece 30b of the lid member 30, and these are fixed and integrated with each other with the rivets 31, and the opening 2b is occludes fluid-tightly.

The rear presser plate 28 is attached to both ends of the casing 2.
is housed in the casing 2 while being engaged with the engagement grooves 2f, 2f from above the bottom surface (opening surface) of the main body 3, and one end of the main body portion 3 is pressed and held within the casing 2.

After this, the casing 2 is held horizontally with the bottom surface (opening surface) facing upward, and the epoxy resin 5 is filled into the casing 2 from the opening surface.

After sufficiently drying the epoxy resin 5 of the electromagnetic switch 1 assembled in this way, the casing 2 is fitted into the recess 7c on the upper surface of the battery 7,
The electromagnetic switch 1 is attached to the upper surface of the battery 7 by fitting the holes of the first connection terminal 17a and the support piece 2a into the electrode terminals 7a and 7b of the battery 7 and tightening them with bolts 7d and 7e. It is fixedly installed.
In this fixed state, the first connection terminal 17a
is electrically connected to the anode side of the battery 7. On the other hand, the reinforcing member 6 is a metal member that is electrically insulated from the casing 2 and does not serve as an electrical contact point.

That is, since the electric circuit portion of the electromagnetic switch 1 is encapsulated and sealed by the epoxy resin 5, there is no risk of water intrusion from the outside, and leakage etc. can be prevented. Further, since the opening surface of the casing 2 filled with the epoxy resin 5 comes into contact with the recess 7c of the battery 7 and is sealed, there is no risk of water intrusion into the electromagnetic switch 1 itself. Furthermore, by filling with the epoxy resin 5, earthquake resistance is also improved.

Next, the operation of the electromagnetic switch 1 having the above structure will be explained.

To start the engine, close the main switch and then operate the starter switch (both not shown) to turn on the excitation coil 12 of the electromagnetic switch 1.
When energized, the plunger 14 is attracted into the bobbin 11 against the spring force of the return spring 13, and accordingly, the movable contact member 16 connects the fixed contact 17g of one fixed contact member 17 and the fixed contact of the other fixed contact member 18. 18b, both fixed contacts 17g, 18
When b becomes electrically conductive, electromagnetic switch 1
is closed. As a result, the starter motor circuit is closed and the starter motor (both not shown) is started.

After starting the engine, when the starter switch is released, the excitation coil 12 is de-energized and the movable contact member 16 is connected to the fixed contact 17g and the fixed contact 1.
8b, and power to the starter motor is cut off.

In addition, since the electromagnetic switch 1 is assembled into a recess 7c provided in the battery 7,
There is no need to secure a special space for installing the electromagnetic switch 1, and the space for placing other engine accessories can be increased accordingly.
This is advantageous in laying out those parts.

In addition, in the electromagnetic switch 1, the first connection terminal 17a that is attached to the casing 2 and led out to the outside of the casing 2 and the support piece 2a of the casing 2 are connected to the electrode terminals 7a, 7 of the battery 7 as described above.
Since the electromagnetic switch 1 is fastened to the battery 7 with bolts 7d and 7e, respectively, the electromagnetic switch 1 can be fixed without providing any special member such as a bracket for fixing the electromagnetic switch 1 to the battery 7.

(Effects of the Invention) As detailed above, according to the present invention, after the main power supply circuit of the vehicle is closed by the key switch, the excitation coil is excited by the closing operation of the starter switch to attract the plunger. An electromagnetic switch with an electromagnetic switch main body that starts the starter motor by electrically connecting a battery side connection terminal and at least a starter motor circuit side connection terminal with a movable contact member that works with a plunger, the bottom surface of which is open. The electromagnetic switch main body is placed in a casing made of an electrically insulating material with a support piece provided at one lateral end, with its battery side connection terminal and starter motor circuit side connection terminal respectively protruding outward from the casing. the electromagnetic switch main body is enclosed and fixed in the casing by filling the casing with a filler made of a synthetic resin member, and placing the electromagnetic switch body with the lower surface of the casing facing the upper surface of the battery; The battery side connection terminal of the electromagnetic switch main body is electrically and mechanically connected to and fixed to the anode terminal of the battery, and the electrically insulated support piece of the casing is fixed to the cathode terminal of the battery. ,
It is completely waterproof, is not limited by installation space, and has the advantage of being solidly installed.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an electromagnetic switch to which the present invention is applied, and FIG. 2 is a partially cutaway bottom view of FIG. 1. 1... Electromagnetic switch, 2... Casing, 2a
... Support piece, 3 ... Electromagnetic switch main body, 5 ...
Filler (epoxy resin), 7...Battery, 7a
...Battery anode terminal, 7b...Battery cathode terminal, 12...Exciting coil, 14...Plunger, 16...Movable contact member, 17...Battery side connection terminal, 18...Starter motor circuit side connection terminal .

Claims (1)

[Claims] 1. After closing the main power supply circuit of the vehicle using the key switch, the excitation coil is excited by the closing operation of the starter switch to attract the plunger, and the movable contact member interlocking with the plunger connects the battery side connection terminal and An electromagnetic switch having an electromagnetic switch main body that starts the starter motor by electrically conducting at least the connection terminal on the starter motor circuit side, which is made of an electrically insulating material whose lower surface is open and a support piece is provided at one lateral end. The electromagnetic switch main body is housed in a casing made of a synthetic resin material, with its battery side connection terminal and starter motor circuit side connection terminal respectively protruding outward from the casing. The electromagnetic switch main body is enclosed and fixed in the casing by filling the electromagnetic switch body with the battery, and the bottom surface of the casing is placed on the upper surface of the battery, and the battery side connection terminal of the electromagnetic switch main body is connected to the anode terminal of the battery. 1. An electromagnetic switch characterized in that the electrically and mechanically connected support piece of the casing is fixed to a cathode terminal of a battery.