JPH11329155A - Detent mechanism for lever switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch knob having a detent mechanism of a lever switch capable of switching with a reliable detent feeling and materializing space saving, and capable of switching with a smooth detent feeling. SOLUTION: At least space saving of an operating lever 4 in the shaft direction can be materialized by shortening the length of each detent spring by letting two detent springs 7 share and receive energizing force of the detent spring required for switching with a reliable detent feeling by high operating force. Since a stress can be set at a low level by thinning a wire diameter as for the detent spring 7 to share the energizing force, durability can be enhanced and operating sound of the detent mechanism 1 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moderation mechanism of a lever switch.

[0002]

2. Description of the Related Art An operation lever for switching a turn signal switch, a wiper switch, and the like is held at a right and left rotation position from a neutral position by a detent mechanism. In order to increase the operation force of the operation lever and to obtain a certain moderation feeling, it is necessary to increase the urging force of the moderation spring that presses the moderation ball or the moderation pin.

[0003]

However, in order to obtain a large biasing force of one moderating spring, the length of the spring is increased and space saving cannot be realized. On the other hand, when trying to obtain a large biasing force with a short spring, the stress of the spring increases. In addition, when the urging force is increased, there is a problem that the operation sound of the moderation mechanism is increased. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a moderation mechanism of a lever switch which can perform switching with a certain moderation and can save space.

[0004]

According to a first aspect of the present invention, there is provided a lever switch moderation mechanism for holding an operation lever rotated from a held neutral position to a left or right switching position in the switching position. In the moderation mechanism, a plurality of moderation balls or moderation pins urged by a moderation spring are arranged in parallel in the rotation direction, and are respectively engaged with valleys of moderation cams arranged in a line. I do.

[0005]

According to the moderation mechanism of the lever switch, a plurality of moderation balls or moderation pins urged by the moderation spring in the rotating direction are arranged in parallel, and each moderation ball or moderation pin is arranged in a row. The moderating cam is engaged with the valley of the moderating cam, so that the urging force of the moderating spring for securing high operating force can be distributed and handled by multiple moderating springs, and long and high stress springs can be used. No need to use. Thereby, at least space saving in the axial direction of the operation lever can be realized. Further, since the urging force is shared by the plurality of moderation springs, the operation noise of the moderation mechanism can be reduced.

[0006]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic cross-sectional view of a moderation mechanism 1 of a lever switch according to the present invention, and FIG. 2 is a schematic cross-sectional view showing a modification of the same. The case 2 is provided with a rotation center shaft 3, and a holder 5 fixed to the tip of an operation lever 4 is rotatably supported by a shaft. Two insertion holes 6 are formed in the holder 5 in parallel in the rotation direction. Each charging hole 6
A moderation spring 7 and a moderation ball 8 are inserted in the rim.

A moderating cam 9 is formed on one side of the case 2 so as to face the holder 5. The detent cam 9 is formed by sequentially forming a valley 10 and a peak 11 in a line. At the neutral position of the operation lever 4, the valley 1 at the center of the
The moderation balls 9 are engaged with the left and right troughs 10 adjacent to 0, respectively. When the operation lever 4 is operated and turned to the left or right for switching, one moderation ball 8
The other moderation ball 8 climbs over the ridge 11 in the rotational direction from the engaged valley 10 and the center of the slope 11a over the ridge 11 in the rotational direction from the engaged valley 10. The valley 10 is engaged.

As described above, the urging force of the detent spring required for switching with a certain detent feeling by a high operating force is distributed and covered by the two detent springs 7. Can be shortened, and at least space saving in the axial direction of the operation lever 4 can be realized. In addition, a moderating spring 7 for sharing the urging force is provided.
Since it is possible to reduce the stress by reducing the wire diameter, the durability can be increased, and the operation noise of the moderation mechanism 1 can be reduced.

In the modified example shown in FIG. 2, the space between two charging holes 6 formed in the holder 5 is narrowed. The moderating cam 9 has a peak 11 provided at the center, and at the neutral position of the operation lever 4, the moderating ball 9 is engaged with each of the left and right troughs 10 adjacent to the central peak 11. . The width W of the case 2 can be reduced by the amount of the space between the charging holes 6, so that space can be saved. Other operations and the like are the same as those described in FIG.

A moderation pin can be used instead of the moderation ball 8, and the moderation spring 7 and the moderation ball 8 can be three or more in number.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a moderation mechanism of a lever switch.

FIG. 2 is a schematic cross-sectional view showing a modification.

[Explanation of symbols]

1. Moderation mechanism 4. Operation lever 6. Loading hole 7.
Moderation spring 8 ... Moderation ball 9 ... Moderation cam 10 ... Tanibe

Claims (1)

[Claims] 1. A moderation mechanism for holding an operation lever rotated from a held neutral position to a left and right switching position at the switching position, wherein a plurality of sets of moderation balls or pins are biased by a moderation spring. A moderation mechanism for a lever switch, wherein the moderation mechanism is arranged in parallel with the movement direction and is engaged with the valleys of moderation cams arranged in a line.