JP2012178232A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a switch device which is suitable for miniaturization and thinning, and which is secured in a switch operation.SOLUTION: A switch device 30 including a case 31 internally formed with a fixed contact 32 and a movable contact 35 arranged at a cover 37 of the case 31 so as to be brought into contact with or isolated from the fixed contact 32 is configured of: an operation body 34 formed with a spindle section 34a at one end and a protruding section 34b at the other end; and a movable contact 35 given a movement force by a first spring 36 so as to be jointed to the fixed contact 32. The cover 37 includes: a bearing section 37f by which the spindle section 34a of the operation body 34 is pivotally supported so as to be rotated; and a through-hole 37b from which the protruding section 34b of the operation body 34 is made to protrude to the outside of the cover. The operation body 34 pivotally supported by the cover 37 to which the movable contact 35 is linked is formed with a second spring 33 by which the operation body 34 is rotated with a spring force which is superior to the spring force of the first spring 36.

Description

  The present invention relates to a switch device that is suitable for downsizing and thinning and that operates stably.

There are various types of switch devices. As an example, FIG. 12 shows a switch device provided in a steering lock device for a vehicle.
The steering lock device 10 shown in the figure determines whether or not the user is an authorized user by using the electronic authentication function by using the electronic key 11. If the authorized user can confirm, the steering lock can be released and the engine can be started. It is a steering lock device with an electronic authentication function.

That is, the steering lock device 10 described above includes a knob 12 for starting the engine. When a person holding the electronic key 11 presses the knob 12, the conductive portion 14 provided at the tip of the shaft 13 is connected to the switch 15. The switch 15 is operated by contact.
According to this operation, the controller 16 determines the operation of the switch 15 and shifts to the operation mode. When the electronic key is authenticated from the radio wave signal sent from the electronic key 11 and it is confirmed that the user is an authorized user, the solenoid 17 To work.

The operation of the solenoid 17 enables the rotor 18 and the cylinder 19 to rotate, and if the knob 12 is rotated to rotate the rotor 18 and the cylinder 19 integrally, the lock shaft is initially rotated. The engine 20 is retracted and unlocked, the knob 12 is further rotated, and the rotor 18 and the cylinder 19 are rotated to the start position to start the engine.
When the knob 12 is returned to the off position, the knob 12 returns to the position shown in the figure by a spring force and moves.

On the other hand, in the steering lock device 10 described above, the mechanical key 21 can be used to allow the engine to start when an abnormality occurs in which authentication of the regular electronic key is not possible.
When the mechanical key 21 is inserted into the key hole of the cylinder 19 and the rotor 18 and the cylinder 19 are pushed in as described above, the cylinder 19 can be rotated, and the lock shaft 20 can be unlocked and the engine can be started. .

When the engine is started using the mechanical key 21, the slide pin 23 pushed by the slider 22 provided in the cylinder 19 enters the receiving hole 24 by the advance movement of the rotor 18 and the cylinder 19, and the detection pin 25. In order to push up, the detection switch 26 operates.
The operation of the detection switch 26 is used to indicate that the mechanical key 21 is in use or to give an alarm for forgetting to pull out the mechanical key 26.

Japanese Patent No. 3798294

  The above-described detection switch 26 provided in the steering lock device 10 has a structure in which the detection pin 25 is configured to operate by being pushed up and down in conjunction with the slider 22 so that the switch 27 protrudes greatly from the body 27. In addition, it is difficult to reduce the thickness because a large operation stroke is required to ensure the contact and separation of the contacts.

For this reason, there is a problem in that a large installation space is required and that it interferes with the installation of other parts.
Therefore, an object of the present invention is to propose a switch device suitable as a detection switch or the like provided in a steering lock device of a vehicle, suitable for downsizing and thinning, and having a reliable switch operation.

  In order to achieve the above object, in the present invention, as a first invention, a case in which an opening is provided on one surface and a fixed contact is provided inside, a cover attached so as to cover the opening of the case, In the switch device provided with the movable contact disposed on the cover and detachable from the fixed contact, a support shaft is provided at one end and an operation protrusion is provided at the other end. The movable body provided with a moving force to be joined to the fixed contact by a first spring, and the cover includes a bearing portion that pivotally supports a support shaft portion of the motion body, The operating body provided with a through hole for projecting the projecting portion of the operating body out of the cover and pivotally supported by the bearing portion of the cover cooperates with the movable contact, and the spring force of the first spring Rotate the moving body with a superior spring force The protrusion protrudes out cover, and proposes a switch device which is characterized in that a second spring to hold the separated state of the movable contact against the fixed contact Te.

  As a second invention, in the switch device according to the first invention, the case is provided with a guide rib projecting from the inner upper surface, and a fitting hole for fitting the guide rib is provided on the bottom surface of the cover. The operating body is provided with a through-hole through which the guide rib penetrates and a spring receiving portion for receiving a second spring around the through-hole, and the guide rib passes through the second spring made of a coil spring. A switch device is proposed, characterized in that it is configured to be fitted in the fitting hole of the cover.

In the switch device according to the first aspect of the invention, in a non-operating state, the operating body rotates in one direction with the support shaft portion as a fulcrum by the spring force of the second spring, and the protruding portion of the free end protrudes outside the cover. .
Further, in this state, since the operating body rotates against the spring force of the first spring, the movable contact is separated from the fixed contact and is switched off.

When the projecting portion of the operating body receives a pressing force from the outside of the cover toward the inside of the cover, the operating body rotates in the opposite direction against the spring force of the second spring.
Therefore, the movable contact moves toward the fixed contact according to the rotation of the operating body, and at the same time receives the spring force of the first spring and joins to the fixed contact, and the switch is turned on.

In the switch device according to the second aspect of the invention, the second spring is mounted on the guide rib provided in the case, and the second spring is configured to provide the restoring force to the operating body, so that the second spring may be removed. Absent.
That is, the spring operation of the second spring is disabled, and even when the pushing force to the protruding portion is released, the operating body does not return and rotate, and the switch does not malfunction such as the movable contact is not separated from the fixed contact.

Therefore, according to the present invention, the movable contact is brought into and out of contact with the fixed contact using the spring force of the first and second springs, so that the switch device can reliably perform the switch operation with a small operation stroke of the movable contact.
In addition, since the movable contact is joined to the fixed contact by the rotation of the operating body and the spring force of the first spring, the switch can be configured by the operating body and the movable contact with little movement. The switch device is advantageous for downsizing and thinning.

It is a perspective view of a switch device showing one embodiment of the present invention. It is a cross-sectional view of the switch device. It is the sectional view on the AA line on FIG. It is a disassembled perspective view of the said switch apparatus. It is the perspective view which showed the state which mounted the 2nd spring on the guide rib provided in the case of the said switch apparatus, and the case inside. It is a perspective view inside the cover of the said switch apparatus which shows the state of the movable contact which pivotally supported the operating body and was made to cooperate with this operating body. It is sectional drawing similar to FIG. 2 which shows the operation state of the said switch apparatus. FIG. 8 is a cross-sectional view similar to FIG. 3 illustrating an operating state of the switch device illustrated in FIG. 7. It is sectional drawing similar to FIG. 2 which shows the operation state of the said switch apparatus. It is sectional drawing similar to FIG. 3 which shows the operation state of the switch apparatus shown in FIG. It is sectional drawing of the steering lock apparatus provided with the said switch apparatus. It is sectional drawing of the steering lock apparatus for vehicles provided with the switch apparatus shown as a prior art example.

Next, an embodiment of the present invention will be described with reference to the drawings.
As shown in the perspective view of FIG. 1, the cross-sectional views of FIGS. 2 and 3, and the exploded perspective view of FIG. 4, the switch device 30 of this embodiment includes a case 31, a fixed contact 32, a second spring 33, and an operating body 34. The movable contact 35, the first spring 36, and the cover 37 are included.

As shown in FIGS. 2 and 3, the case 31 has a box-like shape formed of a resin material in a horizontally long shape. As shown in FIGS. A fixed contact 32 made of an insulating plate is insert-molded.
Note that the lead-out portion of the lead wire 38 electrically connected to the fixed contact 32 is also insert-molded.

A plate-like guide rib 31a is formed upright on the inner upper surface of the case 31, and a second spring 33 is mounted on the guide rib 31a.
That is, the second spring 33 is formed as a coil spring, and the guide rib 31a is passed through the coil spring.
The case 31 is formed with three locking fitting holes 31b for attaching the cover 37.

  The operating body 34 is a substantially quadrangular plate-shaped body made of a resin material provided with a support shaft portion 34a at one end and an operating projection 34b at the other end, and the above-described guide ribs at the center. A spring receiving portion 34d having a circular recess provided with a through hole 34c of 31a is formed, and a space window 34e is formed between the spring receiving portion 34d and the other end portion.

  As shown in FIGS. 2, 3 and 4, the cover 37 is a laterally long quadrilateral formed of a resin material, and a front end portion of a guide rib 31a provided in the case 31 is fitted in a substantially central portion. A fitting hole 37a is provided, and on the other end side, a through hole 37b for projecting the protruding portion 34b of the operating body 34 to the outside of the cover is provided, and further, between the fitting hole 37a and the through hole 37b. Is formed with a convex portion 37 c for disposing the movable contact 35.

That is, the convex portion 37c provided on the cover 37 is a convex portion having a quadrilateral cross section, and a circular groove 37d and a cylindrical portion 37e are provided on the upper surface as a holding structure of the first spring 36. .
Further, the cover 37 is provided with a bearing portion 37 f for bearing the support shaft portion 34 a of the operating body 34, and locking projections 37 g formed at three locations for attachment to the case 31.

The movable contact 35 is formed of a conductive plate formed by bending the surrounding four sides downward to form a guide surface 35a. Of the four guide surfaces 35a formed by bending, the movable contact 35 is cut and raised on the two opposite guide surfaces 35a. A contact portion 35b is provided so as to face upward.
In addition, the tongue piece part 35c provided in the lower part of the two guide surfaces 35a which oppose is an interlocking part made to contact | abut to the lower surface of the space window formation part 34f of said operation body 34. FIG.
The movable contact 35 is slidably fitted to the convex portion 37c of the cover 37 with the first spring 36 interposed therebetween, and the cylindrical portion 37e of the convex portion 37c is inserted into the guide hole 35d on the upper surface.

When assembling the switch device including the above-described components and components, first, the second spring 33 is mounted on the guide rib 31a of the case 31, as shown in FIG.
Further, as shown in FIG. 6, the operating body 34, the first spring 36, and the movable contact 35 are incorporated in the cover 37.

That is, as shown in FIGS. 2, 3, and 4, the first spring 36 is inserted into the circular groove 37 d formed in the convex portion 37 c of the cover 37, and the movable contact 35 is inserted through the first spring 36. The movable contact 35 is incorporated into the cover 37 by fitting so as to cover the convex portion 37c.
Subsequently, the support shaft portion 34a of the operating body 34 is pivotally supported by the bearing portion 37f of the cover 37, and the protruding portion 34b is protruded from the through-hole 37b of the cover 37 toward the outside of the cover. Is incorporated into the cover 37.
When the operating body 34 is incorporated in this way, the lower surface of the space window forming portion 34 f of the operating body 34 comes into contact with the upper surface of the tongue piece portion 35 c of the movable contact 35.

As described above, the cover 37 incorporating the operating body 34 and the movable contact 35 is attached to the case 31 incorporating the second spring 33.
That is, if the locking projection 37g of the cover 37 is fitted to the locking fitting portion 31b of the case 31 and the cover 37 is attached to the case 31, the switch device 30 having the structure shown in FIGS. Assembly is complete.

The switch device 30 described above has a relationship in which the spring force of the second spring 33 is set larger than the spring force of the first spring 36. Normally, the operating body 34 rotates clockwise with the support shaft portion 34a as a fulcrum. The operation state shown in FIGS. 1, 2, and 3 is shown in FIG. 1, FIG. 2, and FIG.
Accordingly, since the tongue 35c of the movable contact 35 is pushed down by the lower surface of the space window forming portion 34f of the operating body 34, the movable contact 35 resists the spring force of the first spring 36 as shown in FIGS. The contact portion 35b is in a switch-off state in which the contact portion 35b is separated from the fixed contact 32.

When pushing force (upward force in FIG. 2) is applied to the projecting portion 34b, the operating body 34 rotates counterclockwise about the support shaft portion 34a.
Accordingly, as shown in FIGS. 7 and 8, the movable contact 35 moves upward as the operating body 34 rotates.
That is, since the tongue piece 35c of the movable contact 35 can be lifted together with the space window forming portion 34f by the counterclockwise rotation of the operating body 34, the movable contact 35 is lifted by the spring force of the first spring 36, The contact part 35 b contacts the fixed contact 32.
Thus, the movable contact 35 contacts the fixed contact 32 and is switched on immediately after the operation body 34 rotates.

When the pushing force to the projecting portion 34b further continues, only the operating body 34 further rotates counterclockwise with the movable contact 35 in contact with the fixed contact 32 as shown in FIGS.
In this operation state, since the movable contact 35 is in contact with the fixed contact 32 by the spring force of the first spring 36, even if the pressing force applied to the projecting portion 34b is accompanied by some strength, the influence is exerted. Stable operation is not received.

When the pushing force of the protrusion 34b is released, the operating body 34 returns from the operating position shown in FIGS. 7 and 9 to the normal position shown in FIG. 2 under the spring force of the second spring 33.
Therefore, as shown in FIGS. 2 and 3, since the tongue piece 35c of the movable contact 35 is pushed down by the space window forming portion 34f of the operating body 34, the movable contact 35 is lowered and switched off.

FIG. 11 shows a steering lock device for a vehicle provided with the above-described switch device.
This steering lock device is provided with a slide block 41 partially protruding from the key insertion hole 40 a of the inner cylinder 40.
That is, as shown in the figure, the slide block 41 is provided in a block guide hole 40b formed in the inner cylinder 40, and moves along the block guide hole 40b by inserting the key 42 into the key insertion hole 40a. It moves in the outer peripheral direction of the inner cylinder 40.

The outer cylinder 43 is formed with a switch arrangement groove 43a, and the switch device 30 described above is incorporated in the switch arrangement groove 43a.
The switch device 30 is disposed on the outer cylinder 43 by a method such as fitting, bonding, or screwing.
The switch device 30 arranged in this way is configured such that the protruding portion 34b partially enters the block guide hole 40b and comes into contact with the slide block 41 described above.

  In the steering lock device having the switch device 30 as described above, the slide block 41 does not move unless the key 42 is inserted into the key insertion hole 40a of the inner cylinder 40, and is in the operating position shown in FIG. Since the pushing force does not act on the protrusion 34b of the switch device 30, the switch device 30 is in the switch-off operation state shown in FIGS. 2 and 3, and the key 42 is not inserted by this switch-off signal. I can let you know.

When the key 42 is inserted into the key insertion hole 40 a of the inner cylinder 40, the slide block 41 is pushed up at the tip of the key 42 and moves upward, so that a pressing force is applied to the protrusion 34 b of the switch device 30, and the key 42 At the initial stage of insertion, the switch device 30 enters the operating state shown in FIGS.
If the key 42 is further inserted, the operating body 34 further rotates to be in the operating state shown in FIGS. 9 and 10, and the switch-on state is continued.
The insertion state of the key 42 can be notified by the switch-on signal of the switch device 30.

When the key 42 is pulled out from the inner cylinder 40, the slide block 41 can be moved backward, so that the protrusion 34b moves backward, and the switch device 30 returns to the operation state shown in FIGS.
In addition, the above-described steering lock device has a known configuration in which the lock shaft 44 can be unlocked and the engine can be started by inserting the key 42 into the key insertion hole 40a and rotating the inner cylinder 40. Is.

  As described above, the switch device 30 according to the present embodiment is a thin and small-sized one, and therefore, the switch device 30 that can be disposed within the cross-sectional diameter of the outer cylinder 43 and does not protrude from the outer cylinder 43. The device 30 is advantageous for a steering lock device.

  It can be applied as a switch device for detecting insertion / extraction of an engine start key in addition to a steering lock device for a vehicle, or as a detection switch device for detecting pushing force.

30 switch device 31 case 31a guide rib 32 fixed contact 33 second spring 34 operating body 34a support shaft 34b protrusion 34c through hole 34d spring receiving portion 34e space window 34f space window forming portion 35 movable contact 35a guide surface 35b contact portion 35c tongue One side 35d Guide hole 36 First spring 37 Cover 37a Fitting hole 37b Through hole 37c Convex part 37d Circular groove 37e Cylindrical part 37f Bearing part

Claims (2)

A case with an opening on one side and a fixed contact inside;
A cover attached to cover the opening of the case;
In the switch device provided with the movable contact disposed on the cover and provided so as to be able to contact and separate from the fixed contact,
An operating body provided with a support shaft at one end and a projection for operation at the other end;
The movable contact provided with a moving force to be joined to the fixed contact by a first spring;
The cover is provided with a bearing portion that rotatably supports the support shaft portion of the operating body, and a through hole that protrudes the protruding portion of the operating body out of the cover,
The operating body pivotally supported on the bearing portion of the cover is linked with the movable contact, and the operating body is rotated by a spring force superior to the spring force of the first spring to remove the protrusion from the cover. And a second spring for holding the movable contact with respect to the fixed contact. The switch device according to claim 1,
The case is provided with a guide rib protruding from the inner upper surface,
On the bottom surface of the cover, a fitting hole for fitting the guide rib is provided,
The operating body is provided with a through hole that penetrates the guide rib, and a spring receiving portion that receives the second spring around the through hole,
The switch device according to claim 1, wherein the guide rib is configured to pass through the through hole through a second spring made of a coil spring and to be fitted into the fitting hole of the cover.

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