JPH0346446Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a starter switch mechanism for starting a vehicle engine.

[Prior art]

In a conventional starter switch mechanism, a rotor is rotatably housed in a casing, and the rotor is moved from a first position where the electrical system is turned off to a second position where the electrical system is turned on. Furthermore, the engine is started by sequentially moving the starter motor circuit to a third position where it is energized. The rotor is adapted to automatically return from the third position to the second position by the spring member, thereby preventing the starter motor circuit from becoming energized after the engine is started. That is, when the starter motor circuit is de-energized, the pinion fixed to the starter motor does not mesh with the ring gear integrally fixed to the flywheel, and the pinion of the starter motor does not mesh with the ring gear until the starter motor circuit is energized. The flywheel is rotated by the rotational force of the starter motor, and after the engine starts, the starter motor circuit is de-energized to disengage the ring gear of the pinion, that is, the rotor is automatically moved to the second position. It is now rotating in the opposite direction. However, in the conventional starter switch mechanism, the rotor rotates from the third position to the second position, and then from the second position to the third position again, so the driver cannot drive the engine. During this process, the rotor may be rotated to the third position by mistake, which may cause the ring gear to mesh with the pinion of the starter motor that rotates at a different speed, potentially damaging the starting mechanism.

As a means to solve these conventional drawbacks,
An example is Special Publication No. 51-31417 (ignition switch). This is shown in Figures 10 to 12,
A rotor 3 is housed in the casing 2, and the rotor 3 rotates together with the latch member 3A and allows the latch member 3A to move in the direction of arrow X in FIG. Piece 3
The sliding surface of B has a flat bone surface 5A and an inclined surface 5B connected to this flat bone surface 5A, as shown in FIG.
A structure in which a smooth surface 5C is formed, which is located inside the slope 5B, and is lower than the slope 5B and higher than the smooth surface 5A, and a stepped portion 5D is formed between the smooth surface 5C and the smooth surface 5A. It is becoming.

Note that the finger-like piece 3B of the latch member 3A has the symbol A ₁
When in this position, the vehicle's electrical system is off, the latch member 3A rotates, and the finger 3B
When the finger 3B is at the _B1 position, the electrical system of the vehicle is turned on, and when the finger 3B is at the _C1 position, the starter motor circuit is energized. As the rotor 2 rotates, the finger-like pieces 3B also rotate together with the rotor, and the finger-like pieces 3B rotate on the inclined surface 5B.
When the latch member 3A moves radially inward (the first
The finger-shaped piece 3 slides in the direction of the arrow
B is positioned on the smooth surface 5A'.
When the finger-shaped piece 3B is located at this smooth surface 5A' position,
Even if you try to rotate the rotor 2 further, the fingers 3
Since B hits the stepped portion 5D, it cannot be rotated to the _C1 position, thereby preventing the engine from being damaged twice.

[Problem that the invention attempts to solve]

However, with the technology related to Special Publication No. 51-31417,
It is necessary to form grooves on the inner circumferential surface of the casing 2 as shown in FIG. 12, and the work of forming these grooves is extremely difficult. Further, the rotor 3 is pressed from one side by a spring 7, and this pressing force is supported by a linear spring member 4, and the spring member 4 is configured to move the rotor 3 from the C ₁ position to the B ₁ position. The force required to elastically return to the position and rotate it is also borne. Therefore, forces in two directions are constantly acting on the spring member 4, which poses a problem in terms of durability for long-term use.

The present invention was devised in view of the problems of the prior art, and its purpose is to provide a starter switch mechanism that has a simple structure, has excellent durability, and can effectively prevent double activation. be.

[Means for solving problems]

In order to achieve the above object, the present invention rotatably houses a rotor in a casing, and the rotor is
By rotating it in the forward direction, from a first position where the vehicle electrical system is turned off, to a second position where the same system is turned on,
In the starter switch mechanism for elastically rotating the starter motor circuit in reverse to the second position after reaching a third position where the starter motor circuit is energized, a slider is housed in the rotor so as to be protrusive; A laterally movable locking member having a locking portion for storage and protrusion of the slider is provided, the locking member being positioned at the third position of the locking member on the side surface of the casing. forming a protrusion for pressing,
Furthermore, a stopper portion for locking the slider is provided at a point where the slider reaches the second position on the inner circumferential surface of the casing.

Preferably, the locking portion is an opening for the slider to protrude, which is formed in a plate horizontally suspended at the tip of the stored slider so that the slider can pass therethrough.

Further, the locking portion includes an arm member protruding in the lateral direction of the slider, and an L-shaped opening formed at a contact position of the arm member of the rotor for locking the arm member. The arm member may be inserted into the opening so as to be movable along the L-shape of the opening, and the slider may be biased outward and torsionally biased by a torsion coil spring.

[Effect]

The rotor moves from the first position to the second position to the third position.
Until the rotor reaches the third position, the slider is held in a state where it is prevented from protruding outward from the rotor by the protrusion prevention mechanism, and when the rotor reaches the third position, the protrusion prevention mechanism is released. The slider protrudes outward. From this third position, the rotor elastically returns to the second position and is rotated, but at this second position, the tip of the slider engages with a stopper provided on the casing, causing the rotor to return to the second position. Rotation from the second position to the third position is prevented.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view of the starter switch mechanism according to this embodiment, and FIG. 2 is a line taken along the line shown in FIG. 1.
FIG. 3 is a cross-sectional view showing the main parts thereof, and FIG. 4 is an explanatory view for explaining the operation of the first embodiment.

1 to 3, a rotor 12 is housed in a casing 10 so as to be rotatable about a shaft 11. As shown in FIGS. A coil spring 16 is interposed between the casing 10 and the rotor 12, and the rotor 12 automatically returns from a third position indicated by the symbol C to be described later to a second position indicated by the symbol A to be described later. It is now possible to do so. A radially extending hole 13 is formed in the rotor 12, and a pin 15 biased radially outward by a coil spring 14 is accommodated in the hole 13. Further, the rotor 12 is provided with an insertion hole 18 that is perpendicular to the hole 13 and extends along the shaft 11, and a slidable plate 20 is inserted into the insertion hole 18. A punched hole 22 is formed in the center of the plate 20, and the slider 15 extends through the punched hole 22, and the claw portion 15A protruding from the slider 15 comes into contact with the lower surface of the plate 20. Therefore, the slider 15 is prevented from protruding. A groove 23 (see FIG. 3) is formed on the inner peripheral surface of the insertion hole 18.
A coil spring 24 is disposed inside to bias the plate 20 in the direction of arrow D in FIGS. It's becoming like that.

Reference numeral 26 denotes a contact plate mounted so as to close the end of the casing 12, and an outer terminal 28 is fixed thereto via a plurality of fixed contacts 27. A bridge member 29 is provided at a position facing the contact plate 26 of the rotor 12.
is attached, and by rotating the rotor 12, the several fixed contacts 27, 27 are connected by the bridge portion 29, and the electrical system of the vehicle is turned off. A second position in which the electrical system of the vehicle is turned on and a third position in which the starter motor circuit is energized are selected.

In FIG. 2, symbol A indicates the first position where the vehicle's electrical system is turned off, symbol B indicates the second position where the vehicle electrical system is turned on, and symbol C indicates the starter motor circuit is energized. A groove 32 is formed on the inner peripheral surface of the casing corresponding to the second position B, and a groove 34 is formed on the inner peripheral surface of the casing corresponding to the third position C. The grooves 32 and 34 are continuous, and a step 33 is formed between the two grooves. In addition, a plate 20 is provided on the wall surface 10B of the casing 10 facing the plate 20.
When the rotor 12 rotates from the second position B (rotates in the direction of arrow E in FIG. 3) and reaches the third position C. The tip 20A of the plate 20 hits this protrusion 30, and the plate 20 is pressed in the direction of arrow F in FIG. 3, thereby releasing the plate 20 from locking the claw 15A of the slider 15. The slider 15 is designed to protrude outward. Note that reference numeral 40 (see FIG. 2) indicates a day tent mechanism provided between the rotor 12 and the casing 10;
(See Fig. 1) is a fixed wall on the vehicle side for fixing the casing 10, and numeral 44 (see Fig. 1) is a starting key, and the rotor 12 is designed to rotate together with this key 44. .

Next, the operation of the starter switch mechanism according to this embodiment will be explained based on FIGS. 4a to 4d.

When the starting key 44 is first inserted into the starter switch mechanism, the slider 15 is in the position shown in FIG. At this time, the claw portion 15A of the slider 15 engages with the plate 20, and the slider 15 is pushed into the hole 13 as shown in FIG. Start key 44 is then actuated to rotate the rotor to a second position B as shown in FIG. 4a. Even in this state, the slider 15 is prevented from protruding. The rotor 12 is further rotated to the third position C as shown in FIG. 4b. Immediately before the rotor 12 reaches this third position C, the plate 20 hits the protrusion 30 and slides in the direction of arrow F in FIG. protrudes in the radial direction, and the tip is in contact with the groove 34. In this state, the starter motor circuit is energized and the engine is ready to start. The rotor 12 is then automatically reversely rotated to the second position B by the coil spring 16. Then, as shown in FIG. 4C, the tip of the slider 15 comes into engagement with the groove 32. From this state, the rotor 1 moves to the third position C.
Even if an attempt is made to rotate the rotor 12, the tip of the slider 15 hits the stepped portion 33, preventing rotation of the rotor 12, thereby preventing double damage. It's getting old. Further, when rotating the rotor 12 in the reverse direction from the second position B to the first position A, the tip of the slider 15 moves along the inner peripheral surface of the casing 12, thereby causing the spring to move. 14 is pressed and the claw portion 15A moves to the back side of the plate 20. Then, due to the pressing force of the spring 24, the plate 20 protrudes in the direction of arrow D in FIG. It will be in a locked state. In this state, the vehicle's electrical system is turned off, so the engine stops.

If you want to start the engine again, rotate the rotor 12 to
As shown in c, the engine becomes ready to start by a similar action.

5 and 6 are views showing the main parts of the second embodiment of the present invention, FIG. 5 is a longitudinal sectional view of the main parts, and FIG. 6 is the same as FIG. 3 of the first embodiment. FIG. 6 is a corresponding view, a sectional view taken along the line - shown in FIG. 5;

In the first embodiment, the slider 15 has a claw portion 15A.
The slider 50 has a constricted portion 5 on the outer circumferential surface of the slider 50 in this second embodiment.
1 is formed, and the plate 20 is configured to be engaged with this constricted portion 51, which is different from the first embodiment. The rest of the structure is the same as that of the first embodiment, so the same reference numerals are given and the explanation thereof will be omitted.

7 to 9 show a third embodiment of the present invention, FIG. 7 is a diagram corresponding to FIG. 2 of the embodiment of FIG. 1, and FIG. 8 is an explanation explaining its operation. 9 are perspective views showing enlarged main parts.

In these figures, a slider 60 having an arm member 66 is housed in a hole 62 provided in the rotor 12, and the slider 60 is protruded by a torsion coil spring 64. The rotation direction of the rotor 12 is maintained in a biased state in the forward rotational direction of the rotor 12 (clockwise in FIG. 7).

The arm member 66 extends through the side surface of the rotor 12, and the portion through which the arm member 66 of the rotor 12 passes is an L-shaped opening 70, and the arm member 66 has a hook forming a protrusion inside the opening 70. Stop part 7
2 to prevent the slider 60 from protruding outward. Reference numeral 80 indicates that the rotor 12 is the third
When the position C is reached, the arm member 66 collides with the arm member 66, thereby causing the arm member 66 to swing, thereby releasing the engagement between the arm member 66 and the latching portion 72. It is provided protrudingly on the movement locus of the arm member 66 on the peripheral surface. Others are listed in 1 above.
This is the same as in the embodiment, and the explanation thereof will be omitted by assigning the same reference numerals.

Also in the case of this third embodiment, the first
and from the first position A to the second position as in the second embodiment.
The slider 60 is held in a state where it is prevented from protruding from the rotor 2 until it reaches the third position C via the position B, and the rotor 12 is at the third position C. When the rotor 12 is in the third position C, the arm member 66 hits the protrusion 80 and is disengaged from the hook 72.
This causes the slider 60 to protrude outward and bring its tip into contact with the groove 34. In this position, the coil spring 16 (see Fig. 1) acts, so that the rotor 12 automatically returns to the second position indicated by the symbol B.
At this time, the tip of the slider 60 engages with the groove 32. Therefore, from this second position B to the third position C
Even if you try to rotate the rotor 12, the slider 60
comes into contact with the stepped portion 33 and rotation is hindered. Further, when the rotor 12 is reversely rotated from the second position B to the first position A, the slider 60 slides along the inner peripheral surface of the casing 10. At the same time, the slider 60 is pushed in by the inner circumferential surface of the casing, so that the arm member 66 is located radially inward from the hook 72. Then, the arm member 66 is latched to the latching portion 72 by the torsional force of the torsion coil spring 64, resulting in the state shown in FIG. 7.

[Effect of idea]

As is clear from the above explanation, the present invention has a very simple structure and excellent durability.
It is possible to reliably prevent double splashing.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the first embodiment of the present invention, FIG. 2 is a cross-sectional view along the line shown in FIG. 1, and FIG.
The figure is a sectional view showing the main parts extracted, Figure 4 a~
d is an explanatory diagram for explaining the operation of the first embodiment of the present invention, FIG. 5 is a longitudinal cross-sectional view showing an extracted main part of the second embodiment of the present invention, and FIG. 6 is shown in FIG. line -
FIG. 7 is a cross-sectional view of the third embodiment of the present invention, FIG. 8 is an explanatory diagram explaining the operation of the third embodiment of the present invention, and FIG. 9 shows the main parts thereof. FIG. 10 is a vertical sectional view of a conventional starter switch mechanism, FIG. 11 is a plan view thereof, and FIG.
FIG. 2 is an enlarged perspective view of the main part. 12...rotor, 14...spring, 15,
50, 60...Slider, 15A...Claw portion, 16...
...Returning coil spring, 20...Plate,
30, 80... Protrusion, 33... Stepped part that is part of the stopper, 50... Constriction, 60... Slider,
64...Torsion coil spring, 66...Arm member, 72...Latching portion.

Claims (1)

[Scope of claims for utility model registration] (1) A rotor is rotatably housed in a casing,
The rotor is rotated in the forward direction from a first position where the vehicle electrical system is turned off to a second position where the same system is turned on.
In the starter switch mechanism, a slider is protruded into the rotor, the starter motor circuit is brought to a third position in which the starter motor circuit is energized, and then elastically rotated in reverse to the second position. providing a laterally movable locking member, the locking member being retractable and having locking portions for retracting and ejecting the slider, the locking member reaching the third position on the side of the casing; A projection portion for pressing the locking member is formed at the point, and a stopper portion for locking the slider is formed at a point where the slider reaches the second position on the inner circumferential surface of the casing. A starter switch mechanism is provided. (2) The locking portion is an opening for the slider to protrude, which is formed in a plate placed horizontally at the tip of the stored slider so that the slider can pass therethrough. A starter switch mechanism according to claim 1 of the utility model registration claim. (3) The locking portion includes an arm member protruding in the lateral direction of the slider, and an L-shaped opening formed at a contact position of the arm member of the rotor for locking the arm member. The arm member is inserted into the opening so as to be movable along the L-shape of the opening, and the slider is biased outward and torsionally biased by a torsion coil spring. A starter switch mechanism according to claim 1 of the patent registration claim.