JPH0511051Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a heater control device for an automobile.

(Prior art) As a heater control device for an automobile, a control lever is sandwiched between a base plate and a holding member, and the control lever is rotatable about a support shaft relative to the base plate, and
It is generally known that moderation members are provided between a control lever and a base plate for locking the control lever at a plurality of angular positions at predetermined intervals. In such a device, the control lever is connected to the heater via a rod or the like, and the temperature of the heater can be adjusted by rotating the control lever.

(Problems to be solved by the invention) By the way, in the above-mentioned device, when the control lever is rotated, the impact generated by the moderation member causes damage between the control lever and the base plate.
Alternatively, there is a problem in that rattling occurs between the control lever and the presser member, which causes abnormal noise such as chatter, which gives an uncomfortable feeling to the passenger.

(Means for Solving the Invention) In view of the above-mentioned problems, in the present invention, the operation knob 2, which is rotatably and slidably supported by the support shaft 7 of the base plate 1 and provided at one end thereof, is provided on the base plate. a first lever 3 disposed on the base plate 1 and guided to move parallel to the vertical portion 11; and a spindle 7 disposed on the first lever 3;
a second lever 5 which is rotatably supported by and rotates in response to the first lever 3 to control the heater;
and a presser member 30 disposed on the second lever 5 to allow the first lever 3 and the second lever 5 to rotate and sandwich the same between the base plate 1 and the second lever 5 and the base plate. 1 and a moderation means 6 for locking the second lever 5 at a plurality of angular positions, the first lever 3 and the second lever 5 are made of synthetic resin, and The first lever 3 is integrally formed with a tongue portion 32 that elastically slides on the base plate 1 side, and the second lever 5 is integrally formed with a tongue portion 33 that elastically slides on the presser member 30 side. By doing so, the first and second
It is constructed to absorb play between the lever, base plate, and presser member.

The moderating means is, for example, provided on the base plate side, is supported by an engaging part having a plurality of engaging recesses, and a second lever, and is configured to engage one of the engaging parts by the biasing force of a spring member. It can be configured with a ball that fits into the matching recess.

In the present invention, the first and second levers are made of synthetic resin, tongues having spring properties are formed on these first and second levers, and these tongues are each made of a synthetic resin.
Since the base plate and the presser member are in sliding contact, when the first lever is rotated, the play between the first and second levers, the base plate, and the presser member that occurs due to the impact generated by the moderation means can be avoided. Due to the presence of the elastic tongue, the noise is significantly reduced, and as a result, the noise generated when the first lever is rotated is reduced. Moreover, the elastic tongue portion is
Since it is provided integrally with the first and second levers, there is no need for an increase in the number of parts or an increase in costs.

In addition, the first part rotates and slides to widen the range of movement.
The tongue of the lever is brought into sliding contact with the wide receiving surface of the base plate, and the tongue of the second lever, which has a narrow movement range by rotation, is brought into sliding contact with the holding member, so the holding member can be made smaller. , space can be used effectively.

Furthermore, the moderating means is composed of a plurality of engaging parts (on the base plate side) having a plurality of engaging recesses, and a ball (on the second lever side) that fits into any of the engaging recesses by a spring member. Then, when the first lever is rotated, the ball can easily move to the adjacent recess due to the expansion and contraction of the spring member, so that the impact on the moderation means is reduced, and thereby the first and second levers and the base plate Alternatively, the play between the pressing members is further reduced, and the occurrence of abnormal noise is further reduced.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the automotive heater control device according to this embodiment is
A base plate 1, an elongated first lever 3 (see Fig. 3) which has an operation knob 2 attached to one end thereof and is rotatably operated around a support shaft 7 (described later), and a rotational force that is applied by the first lever 3. a trifurcated second lever 5 which is attached and rotates integrally with the first lever 3, and which adjusts the temperature of a heater (not shown) via a rod 4 as the lever rotates; and a moderation means 6 (click mechanism) provided between the base plate 1 and the second lever 5 to lock the second lever 5 at a plurality of predetermined positions at predetermined angle intervals.

The base plate 1 and the first and second levers 3 and 5 are made of synthetic resin. It is provided. This arcuate groove 8 has a reinforcing rib 1 that protrudes upward.
0, and both ends of the arcuate groove 8 are curved toward the passenger compartment side (left side in FIG. 1).

The rear end of the first lever 3 projects into the vehicle interior through a hole 12 made in the vertical part 11 of the base plate 1, and the operating knob 2 is attached to the protrusion, and a long hole 13 made in the front part of the first lever 3 is attached to the protrusion. It is fitted into the support shaft portion 7. Further, in the front position of the elongated hole 13 of the first lever 3, there is a pin portion 1 that projects upward.
4 is integrally molded, and a downwardly protruding pin portion 15 is integrally formed at a rear position of the elongated hole 13, and the pin portion 15 is slidably fitted into the arcuate groove 8. As a result, when the first lever 3 is rotated by the operation knob 2, the pin portion 15 of the first lever 3 is guided by the arcuate groove 8 whose both ends are curved backwards, so that the operation knob 2 begins to move linearly, as shown by l in FIG. As a result, the amount of protrusion of the operation knob 2 from the base plate 1 can be maintained constant (minimum) regardless of the rotational position of the first lever 3, so the operation knob 2 does not give a sense of danger to the occupants. . In addition, in order to keep the amount of protrusion of the operating knob constant from the base plate 1, the first lever 3 rotates as it rotates.
Although it will move in the radial direction with respect to the support shaft part 7,
This radial movement is absorbed by the elongated hole 13.

On the other hand, the second lever 5 is placed over the first lever 3, and is rotatably fitted to the support shaft 7 through a circular hole 16 in the center thereof. The first arm portion 17 of the second lever 5 extends in the same direction as the first lever 13, and the first arm portion 17 is provided with a long hole 20 having a reinforcing rib 18 around it. There is. When the first lever 3 is rotated, the elongated hole 20 has a
The rotational force is transmitted from the first lever 3 to the second lever 5 via the pin portion 14, and the second lever 5 is configured to rotate integrally. Note that the movement of the pin portion 14 due to the rotation of the first lever 3 is caused by the movement of the pin portion 14 through the elongated hole 20.
absorbed by.

Further, the upwardly projecting tip of the second arm 21 of the second lever 5 has a recess 22 that opens outward.
(see FIG. 6), and a ball 23 is accommodated near the open end of the recess 22.
is urged outward by a coil spring 24 compressed between the bottom of the recess 22 and the bottom of the recess 22 .

On the other hand, the base plate 1 outside the recess 22
, as the second lever 5 rotates, the second arm 2
An engaging portion 25 having an arcuate shape parallel to the arcuate locus drawn by 1 is provided upright, and an engaging portion 25 having an arcuate horizontal cross section into which the ball 23 selectively fits is provided on the inner surface of the engaging portion 25. A plurality of matching recesses 26, 26, . . . are formed at regular intervals. The ball 23, the coil spring 24, and the engaging portion 25 constitute the moderation means 6.

The rod 4 is connected to the arm portion 27 of the second lever 5 via a connecting fitting 28, and a washer 30 (pressing member) is placed over the center of the second lever 5, and the washer 30 is fitted with a screw. 31, the support shaft part 7
is fixed. The washer 30 holds the first and second levers 3 and 5 between it and the base plate 1, so that the portion near the elongated hole 13 of the first lever 3 comes into sliding contact with the base plate 1, and the second
The area near the circular hole 16 of the lever 5 is the washer 30.
Slide into contact with.

And around the elongated hole 13 of the first lever 3,
A plurality of elastic tongues 32, 32, . . . bent downward.
are integrally formed, and the elastic tongue portions 32, 32, . . . elastically slide on the base plate 1, while the second
A plurality of upwardly bent elastic tongues 33, 33, . . . are integrally formed around the circular hole 16 of the lever 5, and the elastic tongues 33, 33, .
It is in elastic sliding contact with the

(Effect of the invention) As described above, in this embodiment, the first and second levers 3 and 5 are made of synthetic resin, and the distance between the first and second levers 3 and 5 and the base plate 1 or the washer 30 is Since the elastic tongues 32 and 33 are integrally molded, the looseness between the first lever 3, the second lever 5, the base plate 1, and the washer 30 is absorbed by the elastic tongues 32 and 33. Not only is the amount reduced, but each member is supported by elastic tongues made of synthetic resin, so they always slide smoothly and the lever can rotate smoothly over a long period of time. Furthermore, the above configuration allows the number of parts to be minimized, improves assembly efficiency, and is advantageous in terms of cost.

[Brief explanation of the drawing]

1 is a vertical sectional view taken along the line A-A in FIG. 2 of an automobile heater control device according to an embodiment of the present invention; FIG. 2 is a plan view of the device shown in FIG. 1;
3 is a plan view of the first lever in the device shown in FIG. 1, FIG. 4 is a partial vertical cross-sectional view taken along line B-B in FIG. 3, and FIG. 5 is a plan view of the first lever in the device shown in FIG. 2
The plan view of the lever, FIG. 6, is a sectional view of the main part taken along the line CC in FIG. 5. 1... Base plate, 3... First lever, 5
. . . second lever, 6 . . . moderation means, 23 . . . engaging portion, 26 .

Claims (1)

[Claims for Utility Model Registration] An operating knob 2 rotatably and slidably supported by the support shaft 7 of the base plate 1 and provided at one end thereof.
a first lever 3 disposed on the base plate 1 and guided to move parallel to the vertical portion 11 of the base plate;
a second lever 5 which is rotatably supported by and rotates in response to the first lever 3 to control the heater;
and a presser member 30 disposed on the second lever 5 to allow the first lever 3 and the second lever 5 to rotate and sandwich the same between the base plate 1 and the second lever 5 and the base plate. 1 and a moderation means 6 for locking the second lever 5 at a plurality of angular positions, the first lever 3 and the second lever 5 are made of synthetic resin, and The first lever 3 is integrally formed with a tongue portion 32 that elastically slides on the base plate 1 side, and the second lever 5 is integrally formed with a tongue portion 33 that elastically slides on the presser member 30 side. An automotive heater control device characterized by: