JP3110249B2 - Switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device for switching contacts by rotating a control lever.

[0002]

2. Description of the Related Art First, a conventional example will be described with reference to an automobile switch shown in FIG. A body 100 has a plurality of leaf springs 101,
One end of the base side of each of 102 and 103 is fixed at a predetermined interval, and leaf springs 102 and 10 are fixed.
3 are provided with fixed contacts 104 and 105 facing each other. The body 100 is provided with an upper push bar 108 and a lower push bar 109 which are pressed by an operation lever 107 which rotates about a pin 106 and is slidably provided by being urged upward by a spring 110. These push bars 108 and 109 are connected to each other to extend and contract to adjust the overall length.
09 is penetrated through the central part of the leaf springs 101 and 102 and is opposed to the leaf spring 103 at the lowermost stage.
A flange 111 is formed between the first and second halves.

[0003] Such a body 101 is mounted directly below a steering wheel (not shown) of an automobile.
The push bars 108 and 109 are lowered by operating the operation lever 107 in the vertical direction about the center 06, and the leaf springs 101 and 10 are moved in accordance with the amount of movement in the downward direction.
2, contact switching is performed between the leaf springs 102 and 103, between the leaf spring 102 and the fixed contact 104, and between the leaf spring 103 and the fixed contact 105, respectively. Specifically, the contact switching is an operation of a dimmer switch for switching between a high beam and a low beam of a headlight. Although not shown, the operation lever 107 is supported by a lever support, and by rotating this lever support about a vertical rotation axis,
A turn switch for changing the traveling direction is operated.

The dimmer switch shown in FIG. 4 is called a leaf type switch. This type of switch includes a plurality of push bars 108 and 109 which are connected to each other so as to be extendable and contractible for adjusting an operation point of contact switching. Required, and a plurality of leaf springs 101 to 103 and fixed contacts 104, 1
05 and the structure becomes complicated.

Therefore, sliding switches have been put to practical use. Hereinafter, description will be given based on FIG. A cylindrical boss 113 is formed on a body 112 mounted directly below a steering wheel of an automobile. A boss 115 formed on a lever support 114 is rotatably fitted to the boss 113 with a vertical axis. A retaining ring 116 is fixed to the tip of the boss 115 protruding from the boss 113, thereby preventing the boss 115 from moving in the axial direction. The body 112 has a substrate 1 attached to the lower surface thereof.
A sliding body 118 having a movable contact (not shown) for contacting a fixed contact (not shown) on 17 is slidably provided. Further, the lever support 114 is provided with an operation lever 120 for sliding the slide body 118 by rotating about the pin 119 as a fulcrum.
Has a swing arm 121 that extends downward, and an action pin 123 that is fitted to the tip so as to be able to protrude and retract so as to elastically engage with an uneven surface 122 formed on the lever support 114.

In the structure shown in FIG. 5, the operation lever 120 is rotated about a pin 119, and the rotation angle θ is restricted by the chevron shape of the uneven surface 122 with which the shock pin 123 is engaged. FIG. 5B from the state shown in FIG.
When the operation lever 120 is operated in the counterclockwise direction as shown in the figure, the sliding body 118 moves. The distance a of the sliding body 118 moves from the center of the pin 119 to the swing arm 12.
It is determined by the length to the tip of one (the operating point for the sliding body 118) and θ. Such an operation lever 120
Is operated to switch the contact of the dimmer switch. In addition, the lever support 1 around the bosses 113 and 115
When the rotary 14 is rotated, contact switching of a turn switch (not shown) is performed.

[0007]

The bodies 100 and 112 shown in FIGS. 4 and 5 include not only a dimmer switch and a turn switch as described above, but also a wiper switch on the opposite side.
Although a combination switch is formed as a whole by incorporating a window washer switch, a lighting switch, and the like, it is needless to say that the switch is not limited to the combination switch but is generally thin.

In order to reduce the number of parts, the structure shown in FIG. 5 is employed, and in order to meet the demand for further reduction in thickness, the operating force of the operating member 120 on the sliding member 118 from the center of rotation of the operating lever 120 (the center of the pin 119). Transmission unit (swing arm 121
Is required to be shorter.
The distance a that the sliding body 118 moves becomes shorter. Accordingly, when importance is placed on the contact state of the contact, when the movable contact is separated from the fixed contact, there is no allowance in the gap between the movable contact and an insulation problem occurs. Conversely, if priority is given to the contact separation state, problems such as a reduction in the amount of overlap between the fixed contact and the movable contact occur.

[0009]

According to the present invention, there is provided a switch device for switching a contact by sliding a sliding member holding a movable contact contacting a fixed contact by a rotating motion of an operation lever held by a lever support. , The swinging fulcrum portion, the passive portion that receives the operating force of the operating lever, and the transmitting portion that transmits the operating force received by the passive portion to the sliding body are moved away from the rotation center of the operating lever. This is a switch device provided with sequentially arranged joints.

[0010]

According to the present invention, the contact force is switched by transmitting the operating force of the operating lever to the passive portion of the joint and transmitting the turning motion of the joint to the sliding body via the transmitting portion. In this case, since the swing fulcrum of the joint is located between the rotation center of the operation lever and the passive part, the rotation angle of the joint can be larger than the rotation angle of the operation lever. Since the transmitting part of the joint with respect to is arranged farther from the rotation center of the operation lever than the passive part, the moving distance of the sliding body can be reduced without increasing the length from the rotation center of the operation lever to the transmission part. It can be made longer.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the combination switches shown in FIGS. First, as shown in FIG. 3, a body 1 has a hole 2 at the center thereof for passing a steering shaft (not shown) of an automobile, and a plurality of recesses 3 adjacent to each other with a mountain-shaped slope therebetween. ,
4, 5 and a cylindrical portion 6 whose upper and lower ends are open are formed. A turn body 7 as a lever support is rotatably mounted on the left upper surface of the body 1, and a turn switch sliding body 8 displaced by the turning movement of the turn body 7 is incorporated in the body 1. Have been.

The turn body 7 has an action pin 9 urged in a direction protruding toward the concave portions 3, 4, 5 of the body 1, and a cancel plate 12 having a pair of claws 10, 11 formed on both sides. And The turn body 7 is provided with an operation lever 15 having a swing arm 14 rotatably held by a fulcrum shaft 13. An action pin 16 urged in a protruding direction is fitted to the tip of the operation lever 15 so as to be able to protrude and retract.
The uneven surface 17 with which the action pin 16 elastically engages
Are formed on the turn body 7.

Further, as shown in FIG. 3, the turn body 7 has a plurality of locking claws 18 at its lower end which are elastically bent and rotatably fitted to the cylindrical portion 6 of the body 1. The cylindrical fulcrum shaft 19 is integrally formed. And
A fulcrum shaft 19 is provided on a substrate 20 fixed to a lower portion of the body 1.
A boss 20a is formed integrally with the lower end of the boss 20a to fix the axial movement of the fulcrum shaft 19 with respect to the cylindrical portion 6 by pressing the locking claw 18 outward in the radial direction. Further, a sliding body 21 located below the swing arm 14 is held on the body 1 so as to be slidable in the left-right direction in FIG. 3, and a fixed contact (not shown) formed on the substrate 20 is attached to the sliding body 21. ) Is held in contact with the movable contact (not shown).

The body 1 has a swing fulcrum 22 which is swingably held by the body 1, a passive part 23 which receives an operating force from the swing arm 14 of the operating lever 15, There is provided a joint 25 in which a transmitting portion 24 for transmitting an operation force received by the passive portion 23 to the sliding body 21 and a transmitting portion 24 are sequentially arranged in a direction away from the fulcrum shaft 13 (the rotation center of the operating lever 15). Have been. The specific connection structure between the joint 25 and the swing arm 14 is, as shown in FIG.
4. The inverted U-shaped connecting rod 27 hanging down from
5 is a structure to be fitted to the axial passive portion 23.

As shown in FIG. 3, a sliding body 28 is rotatably held via a fulcrum shaft 29 between the right side of the body 1 and the right side of the substrate. The operation lever 30 is rotatably held by a pin 31. The sliding member 28 and the operation lever 30 will not be directly related to the present invention, and will be described briefly. This sliding body 28
By operating the operation lever 30 in the horizontal direction, the rotation is made about the fulcrum shaft 29 as a fulcrum, thereby operating the wiper switch, and operating the fulcrum shaft 29 in the up and down direction to slide the sliding body 32. It is operated to operate the window washer switch.

In such a configuration, the operation lever 15
Is operated along the upper surface of the body 1, the turn body 7
Rotates about the fulcrum shaft 19 as a fulcrum. By this operation, the sliding body 8 and the movable contact held by the sliding body slide on the substrate 20 to perform contact switching of the turn switch.

When the operation lever 15 is turned up and down about the fulcrum shaft 13 as a fulcrum, the operation force is applied to the connecting rod 27.
Is transmitted to the passive portion 23 of the joint 25 via As a result, the joint 25 swings about the swing fulcrum portion 22, and the sliding body 21 and the movable contact held by the sliding body slide on the substrate 20 to switch the contact of the dimmer switch.

As shown in FIG. 1B, when the operating lever 15 is rotated by an angle of .theta. From the state shown in FIG.
It will rotate at an angle of one. In this case, since the swing fulcrum portion 22 of the joint 25 is located between the fulcrum shaft 13 that is the center of rotation of the operation lever 15 and the passive portion 23, the rotation of the joint 25 is performed based on the rotation angle θ1 of the swing arm 14. The angle θ2 can be increased. Further, the transmission part 24 of the joint 25 to the sliding body 21 is
Since it is arranged farther from the fulcrum shaft 13 than the fulcrum shaft 13, the moving distance of the sliding body 21 can be increased without increasing the length from the fulcrum shaft 13 to the transmission portion 24. Thus, when the movable body is displaced from the fixed contact by displacing the sliding member 21 from the state in which the movable contact and the fixed contact are in contact with a sufficient amount of overlap, it is possible to allow a margin between the two. . Therefore, the problem of arc and insulation can be solved.

[0019]

According to the present invention, the swing fulcrum, the passive portion receiving the operating force of the operating lever, and the transmitting portion transmitting the operating force received by the passive portion to the sliding member are far from the center of rotation of the operating lever. Since the joints are sequentially arranged in a certain direction, the operating force of the operating lever is transmitted to the passive portion of the joint, and the contact is switched by transmitting the rotational motion of the joint to the sliding body via the transmitting portion. In this case, since the pivot point of the joint is located between the rotation center of the operation lever and the passive part, the rotation angle of the joint can be made larger than the rotation angle of the operation lever. Since the transmitting part of the joint with respect to is arranged farther from the rotation center of the operation lever than the passive part, the moving distance of the sliding body can be reduced without increasing the length from the rotation center of the operation lever to the transmission part. Long As a result, when the contacts are in contact, the overlapping amount of the contacts is large, and when the contacts are off, there is a margin for the separation distance between the contacts, thereby achieving both a thinner device and improved electrical characteristics. Can be done.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view partially showing a relationship between a lever support and an operation lever together with a switch operation according to an embodiment of the present invention.

FIG. 2 is a plan view showing the entire structure.

FIG. 3 is a vertical sectional side view showing the entire structure.

FIG. 4 is a partial longitudinal side view showing a conventional example.

FIG. 5 is a partial longitudinal side view showing another conventional example together with a switch operation.

[Explanation of symbols]

 7 Lever support 13 Rotation center of operation lever 15 Operation lever 21 Sliding body 22 Swing fulcrum 23 Passive part 24 Transmission part 25 Joint

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 25/04 H01H 21/84

Claims (1)

(57) [Claims] 1. A switch device for switching a contact by sliding a sliding member holding a movable contact contacting a fixed contact by a rotating movement of an operation lever held by a lever support, wherein a swing fulcrum portion and A joint is provided in which a passive unit receiving an operation force of the operation lever and a transmission unit transmitting the operation force received by the passive unit to the sliding body are sequentially arranged in a direction away from the rotation center of the operation lever. A switching device.