JP2560473Y2 - Moderation mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moderation mechanism used for a switch device or the like.

[0002]

2. Description of the Related Art In a blower switch device for an automobile, for example, an operation member is rotatably provided on a switch body, a changeover switch for switching an air blower between OFF and automatic operation (AUTO), and a weak air flow ( There is considered a configuration in which a variable resistor for switching between LO and HI is provided in multiple stages, and the changeover switch and the variable resistor are operated by one operating member.

In this case, in the operation range of the operation member,
A relatively large sense of moderation is preferable in the operation range for operating the changeover switch, whereas a relatively small sense of moderation is preferable in the operation range for operating the variable resistor.

Therefore, as a configuration of a moderation mechanism for obtaining such a moderation feeling, for example, a configuration shown in FIG. 8 has been considered. FIG. 8 shows the moderation surface portion 1 in an expanded state. The moderation surface portion 1 is formed in, for example, an arc shape on a switch body (not shown), and is pressed against the moderation surface portion 1 by a compression coil spring 2. Indenter 3 consisting of a ball
Is provided on the operation member (not shown) side.

The moderation surface portion 1 has a large moderation region 6 having relatively large peaks 4 and valleys 5 alternately, and a large number of valleys 7a smaller than the valleys 5 of the large moderation region 6. It is configured to include a measure degree region 7 and a switching region 8 having a slope 8a formed between the measure degree region 6 and the measure degree region 7 so as to connect them.

Thus, in the above configuration, the indenter 3 is moved to the large moderation area 6 of the moderation surface portion 1 by the rotation operation of the operation member.
In the range where is moved, a changeover switch (not shown) is switched with a relatively large sense of moderation, whereby the blower is switched to three stages of “OFF”, “AUTO” and “LO”. Further, in a range where the indenter 3 moves through the switching area 8 and moves through the bar degree area 7, the resistance value of the variable resistor (not shown) changes with a relatively small feeling of moderation. HI "in multiple stages.

[0007]

In the large moderation region 6 of the moderation surface portion 1, the slope 4a of the peak 4
When the inclination angle is small (when the inclination is gentle), the force required when the indenter 3 gets over the mountain portion 4 can be small, so that the operation force of the operation member is small. The indenter 3 is moved to the peak 4 due to the manufacturing accuracy and frictional force.
There is a problem that it is easy to stop near the vertex.

On the other hand, when the inclination angle of the slope 4a of the peak 4 is increased (when the inclination is steep), it is possible to prevent the indenter 3 from stopping near the top of the peak 4, but
Since the valley portion 5 becomes deep, a large force is required when the indenter 3 gets over the peak portion 4, and a large operation force is required when operating the operation member.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a moderating mechanism which can prevent the indenter from stopping near the peak of the peak, and can achieve this without increasing the operating force of the operating member.

[0010]

According to the present invention, there is provided a moderating member having a body and an operating member which is moved and operated with respect to the body, and having one of the body and the operating member alternately having peaks and valleys. A surface portion is provided, and the other side is provided with an indenter which is urged so as to press against the moderation surface portion and relatively moves the moderation surface portion in accordance with the moving operation of the operation member. An inflection point is provided in the middle, and the slope angle of the slope from this inflection point to the peak of the mountain is set to be greater than the slope of the slope from the inflection point to the valley. Is what you do.

[0011]

By increasing the inclination angle of the slope near the peak of the peak, the indenter can be prevented from stopping near the peak of the peak. Also, in the ridge, the depth of the valley can be reduced by reducing the inclination angle of the slope on the valley side, whereby the force when the indenter crosses the ridge is smaller than when the valley is deeper. Can be smaller.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a blower switch device for a vehicle will be described below with reference to FIGS. 2 and 7, a switch body 11, which is a body, is mounted via a cylindrical outer case 12 having an insertion hole 12a at the center of the front surface thereof, and an engagement claw 13a on the back side of the outer case 12. And the inner case 13 formed.

The rotor body 14 comprises a first rotor 15 rotatably disposed in the outer case 12 and a second rotor 16 rotatably disposed in the inner case 13. ing. A shaft 17 is insert-molded on the first rotor 15, one end 17 a of the shaft 17 protrudes outward through the insertion hole 12 a of the outer case 12, and the other end 17 b is formed at the center of the inner case 13. Tube part 1
8 and connected to the shaft portion 16a of the second rotor 16 by fitting.

An operation knob 19 is attached to one end 17a of the shaft 17 outside the switch body 11, and by turning the operation knob 19, the first
In addition, the second rotors 15, 16 and, consequently, the rotor body 14 are rotated. Here, operation knob 1
An operating member 20 is constituted by the rotor 9 and the rotor body 14.

A movable contact 21 is mounted on the back side of the first rotor 15 so as to rotate integrally with the first rotor 15, and the movable contact 21 is pressed against the first contact. One wiring board 22 is provided in a fixed state. As shown in FIG. 5, fixed contacts 24a, 24b, and 24c forming the movable contact 21 and the changeover switch 23 are provided on the front side of the first wiring board 22.
Is provided.

A slider 25 is attached to the back side of the second rotor 16 so as to rotate integrally with the second rotor 16, and the slider 25 comes into pressure contact with the second rotor 16. Thus, the second wiring board 26 is provided in a fixed state. As shown in FIG. 6, on the front side of the second wiring board 26, the slider 25 and resistors 28a and 28b constituting the variable resistor 27 are provided.

On the other hand, on the inner surface of the outer case 12,
As shown in FIG. 4 and FIG. 4, a moderation surface portion 29 is formed in an arc shape, whereas a compression coil spring 30 and the moderation surface portion 29 are formed on the first rotor 15 side by a compression coil spring 30.
There is provided an indenter 31 made of a ball which is urged so as to be pressed against.

These moderation surface portions 29, compression coil springs 30
And the indenter 31 constitute a moderating mechanism 32.
With the rotation of the rotor 15, the indenter 31 moves on the moderation surface portion 29, and at this time, a moderation feeling is given.

The moderation surface portion 29 includes a large moderation region 35 having relatively large peaks 33 and valleys 34 and a small moderation region 38 having a number of smaller projections 36 and valleys 37. It has a configuration.

Here, as shown in FIG.
An inflection point 39 is provided in the middle of the left and right slopes in the mountain part 33 of No. 5, and the inclination angle of the first slope 40 from the inflection point 39 to the vertex 33a of the mountain part 33 with respect to the reference line O. β1 is set to be larger than the inclination angle β2 of the second slope 41 from the inflection point 39 to the valley 34 (β1> β2).

Next, the operation of the above configuration will be described. When the operation knob 20 is rotated, the first and second rotors 15 and 1 are rotated.
6 rotates integrally. With the rotation of the first rotor 15, the indenter 31 of the moderation mechanism 32 moves on the moderation surface 29, and the movable contact 21 moves to the first wiring board 22.
, And the slider 25 slides with respect to the second wiring board 26 with the rotation of the second rotor 16.

Here, in the range in which the indenter 31 moves in the large moderation area 35 of the moderation surface portion 29, the changeover switch 23 is switched with a relatively large sense of moderation.
F, "AUTO", and "LO".

At this time, the inclination angle β1 of the first slope 40 on the side of the apex 33a from the inflection point 39 is set to be relatively large in the peak 33 of the large moderation region 35.
1 can be prevented as much as possible from stopping near the apex 33a of the peak 33. In addition, the second on the valley portion 34 side from the inflection point 39
Is set relatively small, the depth of the valley portion 34 can be made relatively shallow, so that the force when the indenter 31 passes over the ridge portion 33 is reduced. Therefore, the operating force of the operation knob 19 can be reduced.

In the range in which the indenter 31 moves in the moderation area 38 of the moderation surface portion 29, the resistance value of the variable resistor 27 changes with a relatively small sense of moderation, and the change in the resistance value causes the air volume of the blower to be reduced. Switching between “LO” and “HI” is performed in multiple stages. At this time, the changeover switch 23
The movable contact 21 also slides with respect to the first wiring board 22, but the state of the changeover switch 23 does not change.

The present invention is not limited to the embodiment described above and shown in the drawings.
9 may be provided on the first rotor 15 side, and the indenter 31 pressed against the moderation surface portion 29 may be provided on the outer case 12 side. Instead of the operation member 20 being rotated, The present invention can be carried out with appropriate changes within a range that does not deviate from the gist, such as being applicable to a slide operation.

[0026]

As is apparent from the above description, according to the present invention, in the configuration in which the indenter relatively moves on the detent surface in response to the operation of the operating member, the slope at the peak of the detent surface is obtained. An inflection point is provided in the middle of the slope, and the inclination angle of the slope from the inflection point to the peak of the peak is set to be larger than the inclination angle of the slope from the inflection point to the valley. Thus, an excellent effect is obtained that the indenter can be prevented from stopping near the apex of the peak, and this can be achieved without increasing the operating force of the operating member so much.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is an enlarged sectional view of a main part showing a moderation surface portion in an expanded state.

FIG. 2 is a longitudinal sectional side view.

FIG. 3 is a sectional view taken along line XX in FIG. 2;

FIG. 4 is a cross-sectional view showing a moderation surface in an expanded state.

FIG. 5 is a plan view of a first wiring board.

FIG. 6 is a plan view of a second wiring board.

FIG. 7 is an exploded perspective view.

FIG. 8 is a diagram corresponding to FIG. 4, showing a conventional configuration.

[Explanation of symbols]

11 is a switch body (body), 19 is an operation knob, 2
0 is an operation member, 23 is a changeover switch, 27 is a variable resistor, 29 is a moderation surface portion, 30 is a compression coil spring, 31 is an indenter, 32 is a moderation mechanism, 33 is a mountain portion, 33a is a vertex, 34
Is the valley, 39 is the inflection point, 40 is the first slope, 41 is the second slope
It is a slope.

Claims (1)

(57) [Scope of request for utility model registration] 1. A body and an operation member which is moved and operated with respect to the body, and a moderation surface portion having alternating peaks and valleys is provided on one of the body and the operation member,
On the other hand, an indenter which is urged to press against the detent surface portion and relatively moves the detent surface portion in response to the moving operation of the operation member is provided. A moderation mechanism, wherein a curving point is provided, and an inclination angle of the slope from the inflection point to the peak of the mountain is set to be larger than an inclination angle of the slope from the inflection point to the valley.