JPH0711389Y2 - Starter switch device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a starter switch device for preventing damage to a pinion gear of a starter device due to an erroneous operation after engine startup, and in particular, it is provided inside a starter switch. The cam mechanism prevents damage.

(Prior Art) Conventionally, there was a technology disclosed in Japanese Utility Model Laid-Open No. Sho 62-131332 (starter switch mechanism). As shown in FIG. 4, this accommodates a rotor provided with a slider capable of projecting outward in the rotation direction in the body, and a claw portion is formed on the slider so that the slider comes into contact with the claw portion. The plate biased by is provided in an insertion hole provided in parallel with the rotation axis of the rotor. Along with this, a protrusion is formed on the inner wall of the body so as to press the plate in the direction opposite to the urging force on the rotation trajectory of the plate,
It has a structure in which a groove and a step portion are provided in a portion which comes into contact with the slider when the slider protrudes. From the position A to the position C through the position B, the rotor is held in a state in which the projection is blocked by the projection blocking mechanism. When the rotor rotates to the position C, the protrusion blocking mechanism is released,
This causes the slider to project outward. From this C position, the rotor automatically returns to the B position and is rotated.
The tip of the slider engages with the stepped portion provided on the body at the position (2) to prevent the rotation from the position (B) to the position (C), thereby accidentally driving the starter again while the engine is operating. It is possible to prevent the so-called double running of the engine and the damage of the pinion gear of the starter. To release this, the rotor is rotated to the position A, the protruding slider is pressed by the groove, the plate engages with the claw portion, and the protrusion is blocked. The rotation can be performed again.

(Problems to be solved by the invention) However, in the above-mentioned invention, not only the work for forming the groove and the alignment between the projection and the groove are difficult, but also the processing of the insertion hole and the plate provided in the rotor, The work of assembling all of them is very complicated.

SUMMARY OF THE INVENTION The present invention has an object to provide a starter switch which has a simple structure and is easy to assemble, and thus has excellent durability.

(Means for Solving Problems) According to the present invention, a cylinder that can be rotated by a manual operation of a key and a cylinder that rotates in conjunction with the cylinder from an off position to an on position and from the on position to a start position are provided. In a starter switch device in which a switch mechanism that automatically returns from the start position to the on position when the manual operation of the key is released is provided in the body, in a surface inside the body that intersects with the rotation axis of the cylinder. A loop-shaped cam groove formed of a plurality of steps having different depths; a rotor that rotates in conjunction with the cylinder and is slidably held in a direction intersecting the rotation axis; A biasing member that is provided on a side surface of the rotor and biases the rotor in a direction intersecting with the rotation axis; and a pin that is disposed on the surface of the rotor so as to be retractable and engageable with the cam groove. Have The engagement between the pin and the cam groove when the pin is automatically returned from the start position to the on position prevents the re-rotation from the on position to the start position. .

(Example) Next, the Example of this invention is described based on drawing.

FIG. 1 is a vertical sectional view of a starter switch of the present invention. In the body 1, a cylinder 2, a rotating member 3 which is inserted into the cylinder 2 and transmits rotation of the cylinder 2, a coil spring 4 for automatically returning to the ON position side between an ON position and a start position, and a rotation member. Steel ball 5 and coil spring 6 used to provide moderation, and terminal
A terminal base 9 having 7 and 8 planted therein and fixed to the open end of the body 1 and a short bar 10 which is a movable contact are housed. In addition, a partition 11 having a surface perpendicular to the rotation axis is provided on the key insertion hole side of the rotating member 3, and in the space on the opposite side of the rotating member 3 with respect to the partition 11 inside the body 1. The rotor 12 is inserted into the cylinder 2 and is rotatable about its axis. As shown in FIG. 2, the rotor 12 has a substantially oval shape, and the insertion hole 13 has a long hole shape so that the insertion hole 13 can be slid in the longitudinal direction while rotating with the rotation of the cylinder 2. ing. A hole 15 extending in the longitudinal direction is formed in the side surface of one end 14 of the rotor 12, and a slider 17 biased radially outward by a coil spring 16 is housed in the hole 15. A through hole 19 is formed in the other end portion 18 of the rotor in parallel with the operation axis of the switch, and a coil spring 20, a pin 21, and a slider 22 are housed in the through hole 19. Here, the slider 22 is on the partition wall 11 side, and the pin 21 is on the key insertion hole side. Further, on the surface portion of the rotor 12, holes 23, 2 extending in the thickness direction are formed.
4 and 25 are formed, and coil springs 32 and 3 respectively
Sliders 29, 30, 31 urged toward the partition wall 11 by 3, 34
Is stored. On the other hand, a cam groove 26 shown in FIG. 3 is formed on the inner surface of the body 1 where the pin 21 abuts. The pin 21 has a sufficient width for sliding in the groove, and the start position and the on position are set. Steps 27 and 28 are provided on the
Does not go back.

Next, the assembling method of this embodiment will be described. First, the cylinder 2 is assembled to the body 1, the coil spring 16 and the slider 17 are assembled to the rotor 12 with the open end of the body 1 facing upward, and the coil spring 16 and the slider 17 are inserted from the open end of the body and the insertion hole 13 Are engaged with the cylinder 2. Next, coil spring 20, pin 21, slider
22 and 22 are inserted through the through hole 19, and thereafter, coil springs and sliders which match the holes 23, 24 and 25 are inserted, and the partition wall 11 is covered thereover. Next, the rotor portion that houses the movable contact of the switch mechanism is incorporated, and the terminal base is fitted and fixed.

Next, the operation will be described.

The off position in FIG. 3 is a position where a key can be inserted. By operating the key from here, the rotor 12 is rotated through the cylinder 2 to the ON position. The ON position can be determined by a moderation feeling when the steel ball 5 biased to the case side engages with the recess (not shown) of the case. At this time, the pin 21 is in the ON position of the cam groove 26 and follows the change in the depth of the groove 26a from OFF to ON by the axial biasing force. In this state, power is supplied to each electric device. When the rotor 12 is further rotated, the rotating member 3, which is rotating similarly to the rotor 12, hits the inner wall surface of the body 1 and further rotation is impossible. This position is the start position. The groove 26b between the ON position and the start position is deepened by the step 27, and the pin 21 biased in the depth direction of the groove 26 falls into the deepened step 27 and stops at the start position. In this state, the starter motor rotates and the engine starts. When the user releases his / her hand from the key, the coil spring 4 automatically reversely rotates to the ON position.
At this time, the pin abuts on the step 27 between the ON and the start, so that the pin does not return and is guided by the groove 26c on the center side to fall into the groove 26d deepened by the step 28 and stop at the ON position. The rotor 12 rotates while sliding in the radial direction with the reverse rotation. This is because the shaft hole 13 of the rotor 12 is formed longer than the outer shape of the cylinder 2. Even if the rotor 12 is rotated from this state to the start position, it cannot be rotated because the pin 21 is in contact with the step 28 and is urged in the groove direction. Is prevented. When the rotor 12 is rotated from the on position to the off position, the rotating member 3 hits the inner wall surface of the body 1 and cannot rotate any more. This position is the off position. During this time the rotor 12
Is urged outward in the radial direction, the pin 21 moves outward in the radial direction while tracing the groove 26d and reaches the off position. In this state, the engine is stopped because the electric system of the vehicle is off. In order to smoothly perform the series of operations described here, three sliders 29, 30, 31 on the partition wall 11 side of the rotor 12 are provided. This slider 29,30,31
Rotate integrally with the rotor 12 to reduce friction with the partition wall 11,
The error in the distance between the partition wall 11 and the rotor 12 is absorbed.

(Effect of the Invention) Since the cam groove portion, which is a feature of the present invention, is formed on the surface that intersects with the rotation axis of the cylinder inside the body, the processing can be easily made with a molding die. In addition, since it is possible to easily assemble from one direction, it is possible to perform the assembly work extremely efficiently. In addition, it is possible to reliably prevent accidental application of the engine twice.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a starter switch of the present invention, FIG. 2 is a perspective view of the rotor, and FIG. 3 is a front view of the cam groove. FIG. 4 is a sectional view of a main part of a conventional example. 1 ... Body, 2 ... Cylinder 12 ... Rotor, 14 ... One end part 18 ... Other end part, 19 ... Through hole 21 ... Pin, 26 ... Cam groove

Claims (1)

[Scope of utility model registration request] 1. A cylinder that can be rotated by a manual operation of a key, and a cylinder that is interlocked with the cylinder and that rotates from an off position to an on position and from the on position to a start position, and is released when the manual operation of the key is released. In a starter switch device in which a switch mechanism that automatically returns from a start position to the ON position is arranged in a body, a starter switch device is provided in a plurality of stages with different depths formed on a surface intersecting with a rotation axis of the cylinder inside the body. A loop-shaped cam groove formed of a groove, a rotor that rotates in conjunction with the cylinder and is slidably held in a direction intersecting the rotation axis;
An urging member that is provided on a side surface of the rotor and urges the rotor in a direction intersecting with the rotation axis, and is arranged so as to be retractable from the surface of the rotor and engages with the cam groove. A pin, and is configured to prevent re-rotation from the on position to the start position by engagement of the pin and the cam groove when automatically returning from the start position to the on position. Starter switch device.