JPH025098Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a DC power supply changeover switch device, specifically a battery switching device that switches and drives the internal combustion engine installed in a vehicle equipped with 12-volt DC electrical components using a 24-volt DC starter motor. Concerning improvements to the built-in starter switch.

Conventionally, there has been one shown in FIG. 1 as an example of this type of starter switch with a built-in battery changeover switch. In FIG. 1, reference numeral 1 denotes an auxiliary rotation type starter (starting motor), which is configured to operate at a rated input power supply voltage of 24 volts DC.

2 is a starter engage switch attached to this starter 1, which includes a normally open main contact device 3;
It mainly consists of a current coil 4 and a voltage coil 5.

The main contact device 3 includes a movable contact 7 mounted on the plunger 6 and driven, and a pair of fixed contacts 8a and 8b with which the movable contact 7 comes into contact.

9 is a DC motor, 10 is its field winding, 11a
11b is a brush, and 12 is an armature which is energized by this brush.

On the other hand, reference numeral 13 is an auxiliary switch that controls energization and energization of the starter engage switch 2. The auxiliary switch 2 mainly consists of a normally open main contact 14 and a solenoid coil 15 that drives the main contact 14.

The main contact 14 is fixed to the plunger 16, and the movable contact 17 and a pair of fixed contacts 18a,
18b.

In addition, 19 has a rated electromotive force of 12 volts (D, C,
This is a switch device for switching between series and parallel two on-vehicle batteries 20a and 20b (12 volts), 21 is a first movable contact that is attached to a plunger 22 and is driven, and 23 is a second movable contact.
The first movable contact 21 and the first movable contact 21 are adapted to be simultaneously moved and urged in the same direction by a plunger 22.

24a and 24b are a pair of first fixed contacts that are in contact with the first movable contact 21 and constitute a normally closed contact; 25a and 25b are the second movable contacts 23;
The second movable contact 23 is a pair of second fixed contacts that constitute a normally closed contact.

Furthermore, 26a and 26b are a pair of third fixed contacts that are in contact with the second movable contact 23 and constitute a normally open contact;
The solenoid coil is connected as shown in the figure, and is energized and energized by the auxiliary switch 13 mentioned above.

This auxiliary switch 13 is energized and energized by a key switch 28.

29 is an alternator (charging generator),
Generates a voltage of 12V (rated voltage). An electric load 30 is connected in parallel to this alternator 29.

The electrical load 30 is installed in an automobile (not shown) and is comprised of loads such as lights such as headlights and accessories such as a car air conditioner.

Next, the operation of the conventional starter with a built-in battery changeover switch configured as described above will be explained. When the key switch 28 is closed, the auxiliary switch 13 is energized by the on-vehicle battery 20a and operates, the normally open main contact 14 is closed, and the on-vehicle battery 20b - main contact 14 - solenoid 27 of the changeover switch 19 is closed. - The solenoid coil 7 is energized and energized by the closed circuit of the on-vehicle battery 20b, and the plunger 22 is energized and energized.
The first and second movable contacts 2 are attached to and driven by the
1 and 23 move to the positions 21a and 23a, respectively, the first fixed contacts 24a and 24b are unclosed, the third fixed contacts 26a and 26b are closed, and the on-vehicle batteries 20a and 20b are connected in series. The power supply voltage boosted to 24 volts DC is applied to the starter 1 and the main contact 14 of the auxiliary switch 13.

This allows starter 1 to operate at the rated power supply voltage (DC).
24 volts) to rotate, and an internal combustion engine (not shown) is energized to start.

After the engine is started, when the key switch 28 is released, the energization of the solenoid coil 15 of the auxiliary switch 13 is released, the main contact 14 is released, and the energization of the starter 1 and the changeover switch device 19 is reversed as described above. It is released and becomes stationary.

At this time, the on-vehicle batteries 20a and 20b are connected in parallel by the changeover switch device 19, and the alternator 29 connects the on-vehicle batteries 20a and 20b in parallel.
a, 20b are charged, and the electrical load 30
The power supply voltage of 12 volts DC is connected to the vehicle battery 20a.
and 20b.

In the conventional battery changeover switch system as described above, the starter 1 and the changeover switch device 19 are constructed separately, which has the disadvantage that the device configuration becomes complicated and large.

This idea was made in order to eliminate the above-mentioned drawbacks of the conventional starter.By integrating the starter and changeover switch, the number of parts can be reduced and the circuit configuration can be simplified. The purpose is to provide a starter switch.

Hereinafter, an embodiment of the starter switch with a built-in battery changeover switch of this invention will be described with reference to the drawings.
FIG. 2 is a circuit diagram showing the first embodiment.

In FIG. 2, the same parts as in FIG. 1 will be described with the same reference numerals. 20a and 20b are 12V in-vehicle batteries, respectively.
The positive electrode of a is connected to movable contacts 44a, 42a, and the negative electrode is connected to fixed contacts 41a, 43a.

Fixed contacts 44a and 44b, 42a and 42b, 4
3a and 43b and 41a and 41b form pairs, respectively, and the movable contact 40 contacts or separates between fixed contacts 44a and 44b, and 42a and 42b.

Similarly, fixed contacts 43a and 43b, 41a
A movable contact 39 is adapted to come into contact with or separate from and 41b, respectively.

In the illustrated state, the movable contact 40 is connected to the fixed contact 42.
a and 42b, and the movable contact 39 comes into contact with fixed contacts 41a and 41b.

Both movable contacts 40 and 39 are actuated by a plunger 37.
It is installed on top to provide ground insulation. This plunger 37 has a first solenoid coil 4.
5 and a second solenoid coil 46 are wound.

The first solenoid coil 45 and the second solenoid coil 46 are connected in series, and the connection is made to the vehicle battery 20a via the key switch 28.
connected to the positive terminal of.

One end of the first solenoid coil 45 is connected to a fixed contact 44b, which is connected to the field winding 10 of the DC motor 33, the brush 11a,
It is grounded via the armature 12 and the brush 11b. An overrunning clutch 35 is spline-fitted onto the output rotating shaft 34 of the armature 12 so as to be slidable back and forth.

A groove 35a is formed in the rear part of the housing of the overrunning clutch 35.
The lower end of the shift lever 36 is engaged with the lower end of the shift lever 36.
The upper end of the shift lever 36 is cam-engaged with the plunger 37.

Further, one end of the second solenoid coil 46 is connected to fixed contacts 43a and 41a, the fixed contact 41b is grounded, and the fixed contacts 42b and 4
3b is connected to the positive electrode of the vehicle battery 20b.

Thus, the changeover switch device 32 includes movable contacts 39, 40, fixed contacts 41a and 41b, 43a and 43b, 42a and 42b, 44a and 44b, plunger 37, first solenoid coil 45, and second
The changeover switch device 32 is configured with a solenoid coil 46 and is attached to the starter 31.

The starter 31 is composed of a changeover switch 32, a DC motor 33, and an overrunning clutch 35. This overrunning clutch 3
5 includes a pinion 38 that is engaged with a one-way rotational force.
is provided.

The load of the on-vehicle battery 20b is grounded, and the positive electrode is grounded via an alternator 29, and an electric load 30 is connected in parallel with the alternator 29.

Next, the operation of the starter switch with a built-in battery changeover switch of this invention constructed as described above will be explained. When the key switch 28 is closed, the second solenoid coil 46 is energized by a closed circuit of the vehicle battery 20a, the second solenoid coil 46, and the vehicle battery 20a.

At the same time, a current flows through the circuit connected to the ground via the vehicle battery 20b, the key switch 28, the first solenoid coil 45, and the DC motor 33.
The first solenoid coil 45 is also energized.

When the first solenoid coil 45 is energized, the plunger is attracted, and when the second solenoid coil 46 is energized, the plunger 37 is maintained in the attracted state.

In this way, the plunger 37 is attracted and pulled in the upward F direction in the figure, the shift lever 36 is urged to rotate clockwise in the figure around the rotational fulcrum 36a, and the overrunning clutch 35 is moved toward the output rotation shaft. 34 forward (direction P in the figure), and the pinion 38 is engaged with a ring gear (not shown) of an engine (not shown).

When the plunger 37 is energized, the movable contacts 39 and 40 move to positions 39a and 40a, respectively, and the fixed contacts 43a and 43b, 44a and 4
4b is closed, and the in-vehicle batteries 20a and 2
0b are connected in series and connected to the DC motor 33.

As a result, the field winding 10 and the armature 12
is energized with a rated voltage of 24 volts DC to generate rotational force, and the above-mentioned engine (not shown) is started.

After the engine is started, the key switch 28 is released, and the plunger 37 is activated by the biasing action of a return coil spring (not shown) that acts on the plunger 37.
is returned to the illustrated state, the shift lever 36 is returned to the illustrated state, and the gear engagement between the pinion 38 and the ring gear (not shown) is released.

At the same time, the movable contacts 39 and 40 are returned to the illustrated state, the DC motor 33 is de-energized, and the on-vehicle batteries 20a, 20 are
b. The alternator 29 and the electric load 30 are connected in parallel to each other.

According to the above-mentioned embodiment, the devices are consolidated in one place, and the device can be easily handled.

In the above embodiment, the key switch 28 and the starter changeover switch device 32 are directly connected, but the auxiliary switch 13
may be mounted as illustrated in FIG.

That is, the positive pole of the vehicle battery 20a is connected to the negative pole of the vehicle battery 20a via the key switch 28 and the solenoid coil 15 of the auxiliary switch 13, and the solenoid coil 15 is wound around the plunger 16.

Further, the fixed contact 18a of the auxiliary switch 13 is connected to the positive electrode of the vehicle battery 20a, and the fixed contact 18a is connected to the positive terminal of the vehicle battery 20a.
8b is connected to the connection point between the first solenoid coil 45 and the second solenoid coil 46,
A movable contact 17 is configured to come into contact with or separate from these fixed contacts 18a and 18b. The movable contact 17 constitutes the main contact 14 together with the fixed contacts 18a and 18b. The movable contact 17 is attached to the plunger 16. The other configurations are the same as in FIG. 2.

With this configuration, when the key switch 28 is closed, the solenoid coil 15 is energized, and the movable contact 17 of the main contact 14 moves to the fixed contact 18.
It is connected between a and 18b, and functions similarly to the embodiment shown in FIG. 3.

As described above, according to the starter switch with a built-in battery selector switch of this invention, the battery selector switch and the starter engagement switch are integrated into a functional structure and are attached to the starter.
This has the effect of reducing the number of mounting parts and simplifying the mounting connection circuit.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of a conventional battery changeover switch system, Figure 2 is a circuit diagram of one embodiment of the starter with built-in battery changeover switch of this invention, and Figure 3 is another embodiment of the starter with built-in battery changeover switch of this invention. FIG. 3 is an example circuit diagram. 10... Field winding, 12... Armature, 13...
Auxiliary switch, 20a, 20b... Vehicle battery, 28... Key switch, 29... Alternator, 30... Electric load, 31... Starter, 32
...Changing switch device, 33...DC motor, 3
5... Overrunning clutch, 36... Shift lever, 37... Plunger, 39, 40...
Movable contacts, 41a, 41b, 42a, 42b, 4
3a, 43b, 44a, 44b... Fixed contact, 4
5...first solenoid coil, 46...second solenoid coil. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A DC motor of a starter connected to an overrunning clutch having a pinion that meshes with the ring gear of the engine, which is integrally attached to the starter and discharges a plurality of on-vehicle batteries when a key switch is closed. A starter switch with a built-in battery changeover switch, comprising a changeover switch device that switches from parallel to series, engages the overrunning clutch with the engine via the pinion transfer shift lever, and returns when the key switch is released. (2) The changeover switch device is opened and closed by two movable contacts, and includes two sets of fixed contacts that switch and connect multiple on-vehicle batteries in series or parallel, a plunger connected to the movable contacts, and a plunger wrapped around the plunger to operate a key switch. A first solenoid coil is connected between the positive pole of the battery and the DC motor to energize the plunger; A starter switch with a built-in battery selector switch according to claim 1, characterized in that the starter switch is equipped with two solenoid coils. (3) The starter switch with a built-in battery selector switch according to claim 1 or 2 of the utility model registration claim, characterized in that two on-vehicle batteries each having a rated power supply voltage of 12 volts are installed.