JPH0713144Y2 - Ignition switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Use) The present invention relates to an ignition switch mounted on a remote control box or a lower cover of an outboard motor or the like.

(Prior Art) For example, as an ignition switch used in a remote control box of an outboard motor, a cylindrical mascot key 3 having one end opened to a rotor 2 protruding to the front of a cylindrical switch body 1 as shown in FIG. Is detachably fitted and the rotor 2 is rotated through the key (Japanese Utility Model Laid-Open No. 60-160435).

In this ignition switch, a bar-shaped plunger 4 provided with a habit of axially projecting by a spring bias is provided on a mascot key 3 so as to project the OFF position and the ON position of the rotor 2 on the tubular switch body 1. An arcuate projection 5 is provided in the angle range between them, and the rotor 2 is restricted to the ON position by the plunger 4 contacting the arcuate projection 5 and the rotor 2 is automatically returned to the OFF position when the mascot key 3 is removed. It is done like this.

(Problems to be solved by the invention) However, in the conventional ignition switch configuration, when the mascot key 3 is pressed to activate the choke circuit, the plunger 4 hits the arc-shaped projection 5 provided on the tubular switch body 1. Since it is necessary to retract the key 3 by the pressing stroke of the key 3, the length of the bar-shaped plunger 4 must be made long enough to cover the stroke and a large amount of protrusion must be taken. As a result, the mascot key 3 is moved from the ON position. OF
There was a problem that the bar-shaped plunger 4 was damaged by the shearing force caused by the rubbing when it was rotated to the F position and returned.

The present invention focuses on and solves the above problems of the prior art, and provides an ignition switch that does not require the plunger to be long and does not damage the plunger.

[Constitution of device]

(Means for Solving Problems) In order to solve the above problems, an ignition switch according to the present invention is housed in a tubular switch body and turned off.
A rotor that is selectively rotatable between a position, an ON position, and a start position. The rotor is integrally or integrally provided with an operating shaft extending in the switch body and slidable in the axial direction. In the ignition switch that is always spring-biased toward the original position by the return spring, a mascot key that is detachably attached to the rotor is provided with a spring-biased plunger that protrudes against the spring-biased force. An operation button for retreating is provided on the plunger, and an arc-shaped projection extending corresponding to an angular range between the OFF position and the ON position of the rotor is provided on the magnet housing that moves integrally with the rotor in the axial direction. The rotor is restricted to the ON position by the plunger that comes into contact with the protrusion, and the rotor is automatically returned to the OFF position when the mascot key is removed. It is intended to Mel so.

(Operation) With the above configuration, the magnet housing also moves in the axial direction when the mascot key is pressed, so that the plunger does not have to be retracted independently, and therefore it is not necessary to give an extra stroke for retracting the plunger. The axial length of the plunger can be shortened by that amount, and the strength of the plunger is not impaired.

In addition, the plunger attached to the mascot key is provided with an operation button that retracts against the spring bias, and the operation button can be used to return the rotor from the ON position to the OFF position with the plunger retracted. At this time, the amount of protrusion of the plunger is further reduced, and the rotor is returned to the OFF position with the plunger kept in contact with the sliding portion of the mascot key for a long time. Therefore, sufficient strength can be given to the plunger.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

The tubular switch body 10 is mounted on a remote control box or a lower cover of an outboard motor or the like by screwing a nut (not shown) into a screw portion provided on one side of the tubular casing 11. Has become.

In the tubular switch body 10, as shown in FIG.
A rotor 12 is housed. An annular projection 13 is provided in the circumferential direction on the outer peripheral surface of the rotor 12, and the annular recess 14 of the mascot key 15 is detachably engaged with the annular projection 13.
The annular recess 14 is provided on the inner circumference of the mascot key 15. The mascot key 15 is provided with a mounting hole 16 into which a string 17 is inserted, and a loop (not shown) is formed at the end of the string 17. The operator's hand can be passed through this loop, for example.

In the mascot key 15, a plurality of slits 18 extending in the axial direction are formed on the peripheral wall of the tubular switch body 10 side,
An elastic ring 19 is fitted on the outer circumference of the key peripheral wall so that when the mascot key 15 is fitted to the rotor 12, it is elastically coupled and integrated. Therefore, by turning the mascot key 15 after fitting, the rotor 12 can selectively take the OFF position, the ignition position IG, and the start position St.

A hole 20 extending in the axial direction is formed laterally in the mascot key 15, and a plunger 22 is slidably fitted in the hole 20. The plunger 22 is formed by a coil spring 21 housed in the hole 20. One end projects in the axial direction toward the tubular switch body 10 side, and the opposite side (back side) of the coil spring 21 is supported by a plug 43 inserted into the hole 20. Plunger 22 is a slide operation button that is exposed and protrudes to the side of the mascot key 15.
The plunger 22 is integrally formed with the spring 22a and allows the plunger 22 to freely move in and out against the spring force of the spring 21 by the sliding operation of the sliding operation button 22a.

A rotor 12 detachably coupled to the mascot key 15.
Is made of an insulating resin material such as polyacetal.
As shown in the drawing, the operating shaft 23 is integrally or integrally provided. The actuating shaft 23 extends axially in the tubular switch body 10, while the actuating shaft 23 has a magnet housing accommodating a locking magnet 24 on the base side thereof.
25 is installed. This lock magnet 24 has a recess (not shown) in the rotor 12 due to the spring force of the magnet spring 26 when the mascot key 15 is removed from the rotor 12.
To regulate the rotation of the rotor 12. When the mascot key 15 is attached, a magnet (not shown) housed in the mascot key 15 repels the locking magnet 24 and comes out of the concave portion of the rotor 12 to release the rotation lock. ), OFF, and the start position can be selectively turned.

The magnet housing 25 has a side protrusion 27 on a part of the circumferential direction.
Is formed, and is provided in the tubular casing 11 of the tubular switch body 10 so as not to rotate by the side protrusions 27. The rotor 12 is provided integrally with the magnet housing 25 in the axial direction and is free to rotate.

The side projection 27 of the magnet housing 25 is integrally provided with an arcuate projection 27a extending toward the plunger 22. Arcuate protrusion 27a
Is formed between the OFF position and the IG position of the rotor 12, and is provided with an engagement cam surface which is engageable with the tip (one end) of the plunger 22 at the tip. But mascot key 15 rotor 12
When attached to the, the tip of the plunger 22 is engaged at the OFF position of the rotor 12.

The magnet housing 25 is non-rotatably attached to the tubular casing 11 and is fixed integrally to the actuating shaft 23 by an stopper ring 28 such as an E-ring so as to prevent relative sliding in the axial direction. The magnet housing 25 and the actuating shaft 23 are constantly urged by the return spring 29 toward the original position, and the stop ring 28 also serves as a spring receiver for the return spring 29.

A disc-shaped roller 30 is provided at the tip of the operating shaft 23.
Is mounted integrally with the rotation. The roller 30 is spring-biased by a return spring 31 so as to be returned from the start position to the OFF position, and a positioning ball 32 that regulates the rotational position of the roller 30 is housed in an appropriate portion. The positioning ball 32 is biased radially outward by a spring 33, and the positioning ball 32 engages with a recess 32a formed at a predetermined position on the inner peripheral wall of the cylindrical casing 11 to form a disc shape. The rotation position of the roller 30 is regulated.

A disk-shaped first contact plate 34 made of a conductive material is rotatably integrated and axially slidably mounted on the tip boss portion of the roller 30. The first contact plate 34 has a plurality of contact protrusions 35 on its surface.
Are formed at appropriate intervals in the circumferential direction, and the protrusions 35 are formed so as to be able to contact the first contact group 36. Then, in order to ensure contact between the two, the first contact plate 34
The projection 35 part of the first contact group 36 by the spring 37
Always pressed to the side.

The first contact group 36 is installed on the base 38, and specifically, the battery (BATT), the ground (E), and the ignition (I
G), stop (STOP), and start (START) contacts are selectively contacted.

The base 38 is a tubular casing 11 of the tubular switch body 10.
It is press-fitted and housed at the end of the. In this base 38, a long groove 39 extending in the diametrical direction is formed inside,
An elongated second contact elastic plate 40 made of an elastic material is accommodated in the long groove 39. This plate 40 is second
The choke circuit is closed by making contact with the contact 41. The second contact elastic plate 40 is constantly contacted so as to be pressed by the tip of the operating shaft 23. When the mascot key 15 is pressed, the second contact elastic plate 40 is moved to the second position via the actuating shaft 23.
The choke circuit is closed by making contact with the contact 41.

Next, the operation will be described.

Mascot key 15 to rotor 12 of ignition switch
When the is installed, the lock magnet 24 is released from the recess (not shown) of the rotor 12 to release the lock, and the rotor 12 is turned on.
・ It can be turned selectively to each position of OFF and start.

Turning the mascot key 15 from the OFF position to the 0N (IG) position energizes the power supply and activates the ignition circuit. At this time, the plunger 22 of the mascot key 15 separates from the arcuate protrusion 27, and the plunger 22 is biased by the coil spring 21 to return to the protruding state and hits the side surface of the arcuate protrusion 27.

In addition, mascot key 15 at an angle from the IG position (for example,
When the rotor 12 is rotated to 35 °) to the start position, the ignition and start contacts are connected to the power source and activated. After this start-up, the rotor 12 is returned to its original position by the restoring force of the return spring 29.However, the plunger 22 provided on the mascot key 15 hits the side surface of the arc-shaped projection 27 provided on the magnet housing 25 and the rotor 12
Is restricted to the ON (IG) position, and it cannot be rotated any further.

When the mascot key 15 is embedded against the spring force of the return spring 29, the mascot key 15 pushes the rotor 12 and the magnet housing 25 integrally, so that the plunger 22 is pushed in without moving forward and backward, and the rotor 12 of the rotor 12 is pushed. The second contact 41 is made conductive at the tip of the operating shaft 23, and the choke circuit system is connected to the power supply.

When the mascot key 15 is released, the return spring 29
The rotor 12 is returned to the IG position by the spring force of. Also in this case, the plunger 22 does not move forward or backward with respect to the mascot key 15.

To stop the engine, operate the slide operation button 22a to retreat against the spring force of the coil spring 21 and then return the mascot key 15 to the OFF position, or remove the mascot key 15 from the rotor 12, The rotor 12 automatically returns to the OFF position due to the restoring force of the return spring 31,
Stops when the power is turned off. Also, if you want to stop the engine in an emergency, pull the string 17 and press the mascot key 15
Can be removed from the rotor 12.

[Effect of device]

As described above, the present invention includes the rotor housed in the tubular switch body and selectively rotatable between the OFF position, the ON position, and the start position, and the rotor extends in the switch body in the axial direction. An ignition switch in which a slidable operating shaft is integrally or integrally provided with the rotor, and the rotor is always spring-biased toward the original position by a return spring.In an ignition switch, a mascot key that is detachably attached to the rotor is spring-biased. The plunger is provided with an operation button that retreats against the biasing force of the plunger, and the magnet housing that moves in the axial direction integrally with the rotor is provided between the OFF position and the ON position of the rotor. Is provided with an arc-shaped projection that extends in correspondence with the angular range of the rotor, and the rotor is turned on by the plunger that contacts the engaging cam surface of the arc-shaped projection. Since the rotor is automatically returned to the OFF position when the mascot key is removed, the amount of protrusion of the plunger housed slidably in the mascot key can be small, and the operation button When the mascot key is returned from the ON position to the OFF position by operating, the plunger can be returned to the OFF position only when it is retracted against the biasing force of the spring. be able to. Therefore, the length of the plunger can be shortened regardless of the pushing stroke of the mascot key, and the plunger can be given sufficient strength.
The deformation and damage can be reliably and effectively prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an ignition switch according to the present invention, and FIG. 2 is an ignition switch.
FIG. 4 is a side view when the ignition switch is OFF, FIG. 3 is a vertical side view when the ignition switch is ON, and FIG. 4 is a side view showing a conventional technique. 1,10 …… Cylindrical switch body, 2,12 …… Rotor, 3,15 ……
Mascot key, 4,22 …… Plunger, 5,27 …… Arc projection, 11 …… Cylinder casing, 23 …… Actuating shaft, 24…
… Lock magnet, 25 …… Magnet housing,
27 …… Side protrusion, 27a …… Arc protrusion, 29 …… Return spring, 31 …… Return spring.

Claims (1)

[Scope of utility model registration request] 1. A rotor housed in a tubular switch body and selectively rotatable between an OFF position, an ON position and a start position, the rotor extending into the switch body and slidable in an axial direction. In this ignition switch, the rotor is always spring-biased to the original position by a return spring, and a mascot key that is detachably attached to the rotor is a spring-biased plunger. The plunger is provided with an operation button that protrudes and retracts against the biasing force of the spring, and the magnet housing that moves in the axial direction integrally with the rotor has an angular range between the OFF position and the ON position of the rotor. Correspondingly extending arc-shaped projections are provided, and the plunger that contacts the arc-shaped projections restricts the rotor to the ON position and the mascot. OF the rotor at the time of removal of the Yi
Ignition switch characterized by being able to automatically return to the F position.