JP2773380B2 - Starter switch - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a starter switch used for a starter for starting an engine.

[Related Art] Conventionally, as disclosed in Japanese Patent Application Laid-Open No. Sho 62-150073, for example, there is a starter switch using a motor as a power source.

In this technique, a shaft engaged with a rotating shaft of a motor is moved in an axial direction, and a pinion is moved toward a ring gear with the movement of the shaft.

As a result, compared to a magnet switch that drives a plunger by the attraction force of a solenoid, it is possible to improve the meshing performance and realize a reduction in weight.

[Problems to be Solved by the Invention] However, in the conventional starter switch using a motor as a power source, while a key switch keeps an ON state, a large restraint current continues to flow for the motor as a power source, so that a heat resistant It is difficult to reduce the size of the motor from the viewpoint of performance, and this is a problem in reducing the weight.

Further, when the voltage applied to the motor of the power source becomes extremely low, the number of revolutions of the motor of the power source decreases, and the operation time until the start of the engine becomes longer, which is not preferable in terms of sensitivity.

The present invention has been made based on the above circumstances, and aims to reduce the size and weight of a motor as a power source, and even when the voltage applied to the motor of the power source is extremely reduced. Another object of the present invention is to provide a starter switch capable of shortening the operation time until the engine is started.

Means for Solving the Problems In order to achieve the above object, the present invention provides an opening / closing means for opening / closing a contact provided in a starter circuit for supplying a current to an armature, and moving the axial direction from one side to the other side. A pinion driving means for moving the pinion forward to the ring gear side and moving the pinion backward by moving the pinion from one side to the other, and an output shaft engaged with the pinion driving means via engagement means, and a forward rotation of the output shaft; A motor for moving the pinion driving means from the one side to the other side during the reverse rotation of the output shaft from the other side to the one side at the time of reverse rotation of the output shaft, and energizing the motor in accordance with a set position of a key switch A control circuit for performing control, wherein the key switch is configured to rotate the output shaft of the motor in a first set position for rotating the output shaft of the motor in a forward direction. A second setting position for turning on and off the motor when the key switch is set to the first setting position or the second setting position for a predetermined time; After stopping the engine,
By setting the key switch to the first setting position, the key switch is pushed out to the ring gear side to maintain a state in which the key switch is in contact with the ring gear.
By closing the setting by the opening / closing means, the pinion is rotated together with the rotation of the armature, and provided so as to mesh with the ring gear. After the engine is started, the key switch is set to the second setting position. Accordingly, it is a technical means to separate from the ring gear.

[Operation] The invention according to claim 1 has the following operation.

First, when the engine is stopped, the pinion is in contact with the ring gear.

When starting the engine, the contacts are closed by the opening / closing means, so that current flows through the armature and the armature rotates. With the rotation of the armature, the pinion rotates to a position where it meshes with the ring gear, and the engine is started by meshing with the ring gear.

After the start of the engine, by opening the contact of the starter circuit and setting the key switch to the second setting position, the output shaft of the motor rotates in the reverse direction, the pinion drive means moves from the other to one side, and the pinion moves from the ring gear. break away.

After the engine is stopped, by setting the key switch to the first set position, the output shaft of the motor rotates forward, the pinion drive means moves from one side to the other, and the pinion is pushed out to the ring gear side and hits the ring gear. Maintain contact.

[Effect of the Invention] According to the invention according to claim 1, after the engine is stopped,
The pinion is pushed out to the ring gear side and is kept in contact with the ring gear. Therefore, starting the engine
It is performed by closing the contact provided in the starter circuit by the opening / closing means, and there is no need to supply power to the motor.

As a result, even when the voltage applied to the motor is extremely reduced, the operation time until the start of the engine can be shortened, and a good feeling can be given during use.

Example Next, a starter switch of the present invention will be described based on an example shown in the drawings.

 FIG. 1 is an overall configuration diagram of a starter switch.

The starter switch 1 includes a motor 2 as a power source, opening / closing means 32 for opening / closing fixed settings 5 and 6 provided in the starter circuit 4, and a pinion for moving the pinion 7 forward and backward with axial movement. It is composed of a driving means (to be described later), a control circuit 9 for controlling the energization of the motor 2 according to the set position of the key switch 8, and the like.

The motor 2 is provided with a worm gear 10 that rotates in synchronization with the output shaft 2a on the outer periphery of the output shaft 2a.

The opening / closing means 32 includes the movable contact 12 and a solenoid 33 that drives the movable contact 12 by an electromagnetic force generated when energized.

The pinion driving means does not have a function of opening and closing the fixed contacts 5 and 6, and includes a rod 11, a drive spring 13, a drive lever 14, and the like.

The rod 11 is rotatably supported via bearings 15 and 16, and a worm gear 17 which forms an engagement means of the present invention is provided on the outer periphery of the rod 11 together with the worm gear 10 of the output shaft 2 a. And the worm gear 17 are engaged with each other so as to be orthogonal to each other (see FIG. 1). Therefore, when the output shaft 2a of the motor 2 rotates, the rod 11 can move in the axial direction (the left-right direction in FIG. 1) while rotating.

The other end of the rod 11 is provided on a locking portion 22 formed with a key groove 22a for locking the drive spring 13, and the end of the rod 11 is rotatably fitted to the locking portion 22. .

The drive lever 14 is provided rotatably about a fulcrum 14a, and a lower end shown in FIG. 1 is connected to an outer periphery of a spline tube 24 formed integrally with the one clutch 23.

The one-way clutch 23 transmits the rotation of the armature 3 in only one direction, and the spline tube 24 is helically spline-fitted to the outer periphery of the shaft 25 so as to be movable back and forth on the shaft 25. I have.
The pinion 7, which meshes with the ring gear 26 when the engine is started, is formed integrally with the inner 23a of the one-way clutch 23, and is disposed at the tip (left side in FIG. 1) of the one-way clutch 23.

The key switch 8 is an OFF position 27 (first setting position of the present invention) for rotating the output shaft 2a of the motor 2 forward (clockwise rotation in FIG. 1), and an IG position 29 (first position) for rotating the output shaft 2a of the motor 2 in reverse. 2 setting position), and an ST position 28 connected to the solenoid 33 of the opening / closing means 32. The rod 11 is
When the output shaft 2a of the motor 2 rotates forward, it is driven from one side (left side in FIG. 1) to the other, and when the output shaft 2a of the motor 2 rotates reversely, it is driven from the other side to one side.

The control circuit 9 operates by receiving power supply from the battery 31. The control circuit 9 has a timer function, and when the rotation operation unit 30 of the key switch 8 is set to the OFF position 27 or the IG position 29, the control circuit 9 supplies power to the motor 2 for a predetermined time. Further, the control circuit 9 includes a detecting means (not shown) for detecting a stop state of the ring gear 26, and detects a rotation stop of the ring gear 26 when the rotation operation unit 30 is set from the IG position 29 to the OFF position 27. After that, the motor 2 is programmed to be energized.

When the rotary operation unit 30 of the key switch 8 is operated from the ST position 28 to the IG position 29, the motor 2 is energized for a predetermined time, and the output shaft 2a of the motor 2 rotates in the reverse direction. Also,
When the operation is performed from the IG position 29 to the OFF position 27, power is supplied to the motor 2 for a predetermined time, and the output shaft 2a of the motor 2 rotates forward.

 Hereinafter, the operation of the present embodiment will be described.

First, when the engine is stopped (the rotary operation part 30 of the key switch 8 is in the OFF position 27), the rod 11 is maintained in a state of moving rightward in FIG.
It is in contact with 26 sides.

Here, the user operates the rotary operation unit 30 of the key switch 8 in the ST mode.
When the position is set to the position 28, the solenoid 33 is energized, the movable contact 12 contacts the fixed contacts 5, 6, the current flows from the battery 31 to the starter circuit 4, and the armature 3 rotates. With the rotation of the armature 3, the drive spring
The pinion 7 biased to 13 meshes with the ring gear 26,
Start the engine.

After starting the engine, turn the rotary operation part 30 of the key switch 8
When set to the IG position 29, energization of the solenoid 33 is cut off, rotation of the armature 3 is stopped, and current flows to the motor 2 for a predetermined time via the control circuit 9, and the output shaft 2a of the motor 2 rotates in reverse. (Fig. 1 counterclockwise rotation). As a result, the rod 11 is driven leftward in FIG.
The pinion separates from the ring gear 26. At this time, even if the power supply to the motor 2 is interrupted after the elapse of the predetermined time, the position of the rod 11 is fixed because the worm gear 10 and the worm gear 17 are engaged.

After the engine is stopped, turn the rotary operation unit 30 of the key switch 8
When it is set to the F position 27, at the same time when the rotation of the ring gear 26 is stopped, a current flows to the motor 2 for a predetermined time via the control circuit 9, and the output shaft 2a of the motor 2 rotates forward. This allows
Since the rod 11 is driven rightward in FIG. 1, the one-way clutch 23 moves forward, the pinion 7 is pushed out to the ring gear 26 side, and the side surface of the pinion 7 contacts the side surface of the ring gear 26 and stops.

By rotating the output shaft 2a of the motor 2 for a predetermined time, the rod 11 further moves while bending the drive spring 13 while the forward movement of the pinion 7 is stopped, and the end face of the worm gear 17 (right side in FIG. 2) Bearing 16)
The movement of the rod 11 is stopped when the rod 11 comes into contact with the rod. At this time, even if the power supply to the motor 2 is interrupted, the worm gear 10
Since the worm gear 17 and the worm gear 17 are engaged with each other, the position of the rod 11 is fixed, so that the pinion 7 remains in contact with the ring gear 26 as originally.

Since the pinion 7 is kept in contact with the ring gear 26 after the engine is stopped, the engine is started by closing the fixed contacts 5 and 6 provided in the starter circuit 4 by the opening / closing means 32. It is not necessary to energize the motor 2.

As a result, even when the voltage applied to the motor 2 is extremely reduced, the operation time until the start of the engine can be reduced, and a good feeling can be given to the user.

[Brief description of the drawings]

 FIG. 1 is an overall configuration diagram of a starter switch. In the figure, 1... A starter switch, 2... A motor 2a... An output shaft, 3... An armature 4... A starter circuit, 5 and 6. 10 worm gear (engaging means) 11 rod (pinion driving means) 12 movable contact 13 drive spring (pinion driving means) 14 drive lever (pinion driving means) 17 worm gear (engagement) Means) 26 Ring gear 27 OFF position (first setting position) 28 ST position 29 IG position (second setting position) 32 Opening / closing means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F02N 11/00 F02N 11/08

Claims (1)

(57) [Claims] (A) opening / closing means for opening / closing a contact provided in a starter circuit for supplying a current to an armature; and (b) moving a pinion toward a ring gear by moving an axial direction from one side to the other side. (C) an output shaft is engaged with the pinion drive unit via an engagement unit, and the pinion drive unit is rotated when the output shaft rotates forward. A motor for moving the pinion drive means from the other side to the one side when the output shaft is rotated in the reverse direction from the one side to the other side; and (d) energizing control of the motor according to a set position of a key switch. A first setting position for rotating the output shaft of the motor in the forward direction and a second setting position for rotating the output shaft of the motor in the reverse direction. The control rotation, when the key switch is set to the first set position or the second set position, respectively, to energize the motor for a predetermined time, the pinion, after stopping the engine, By setting the key switch to the first set position, the key switch is pushed out to the ring gear side to maintain a state in which the key switch is in contact with the ring gear. A starter switch which is provided so that the pinion is rotated with the rotation of the armature and meshes with the ring gear, and after the engine is started, the key switch is set to the second setting position to release from the ring gear.