JPS581055Y2 - Control lever device for heaters, etc. in automobiles - Google Patents

Description

[Detailed description of the invention] This invention relates to a control lever device for a heater or the like in an automobile.

In general, automobiles are equipped with air-conditioning and heating systems, as well as outside air intake and extraction ports, in order to adjust the temperature inside the cabin to a comfortable level, or to ventilate dirty air inside the cabin by bringing in fresh outside air. The control device is built into the instrument panel in front of the driver's seat.

Usually, the functions of opening and closing a heating device (for example, a heater) and an outside air intake are placed in one place.

This control lever device, as shown in Fig. 1,
The button consists of a base plate 1, a control lever 3 rotatably mounted on the base plate 1 via a pivot 2, and an intermediate lever 4 made of resin, one end of which is pivotally mounted on the cage plate 1. A pin 6 that fits into a cam groove 5 formed in the control lever 3 is installed at an appropriate location.

Furthermore, one end of the intermediate lever 4 may be connected to, for example, an opening/closing lid (not shown) of an outside air intake, and the other end of a wire I may be connected to an opening/closing lid connected to a blower such as a heater. - The other end of the wire 8 to which the two ends are connected is connected.

By rotating the control lever 3 in a predetermined direction about the pivot 2, the intermediate lever 4 is rotated about the pivot via the cam groove 5, and the wire 7.8
is operated to control the opening and closing of the outside air intake port connected to the end of each wire 7.8, the opening/closing cover of the blower of the heating device, etc.

By the way, the intermediate lever 4 of the above control lever device
0 The method of pivoting to the base plate 1 is as shown in FIG. This was done by inserting a pin 11 and attaching a wave washer 12 and an E-ring 13 to the end of the pin 11.

Further, the pin 6 installed on the intermediate lever 4 that fits into the cam groove 5 of the control lever 3 is attached to the intermediate lever 4 by press-fitting the metal pin 6 into the hole 14 provided on the intermediate lever 4. ing.

However, the base plate 1- of the intermediate lever 4 made of resin
If the \ is pivotally connected using the pin 11 as described above, there are disadvantages in that the number of parts increases and it takes time to assemble.

This invention has been developed to improve and eliminate the above-mentioned conventional drawbacks, and the invention will be explained below according to the embodiments shown in the drawings.

Referring to FIG. 3, reference numeral 20 denotes a resin intermediate lever pivotally mounted on a base plate 21 of the control lever device, and a fulcrum portion of this intermediate lever 20 has a cylindrical first convex portion 22. is integrally provided when the intermediate lever 200 is molded.

Reference numeral 23 denotes a hole bored on the base plate 21 that fits into the first convex portion 22 of the intermediate lever 20;
An annular flange portion is formed around the flange by burring, etc., so that the surface contact area with the first convex portion 22 of the intermediate lever 20 is increased.

24 is a cylindrical second convex portion formed integrally with the intermediate lever 20 at a portion of the intermediate lever 20 located below the cam groove 26 of the control lever 25;
A metal guide cap 7 is interposed between the second protrusion 24 and the cam groove 26 so as to fit loosely into the second protrusion 24.
When the control lever 25 is operated, it rotates between the second protrusion 24 and the cam groove 26, and the cam groove 26 and the second protrusion 2
This reduces the frictional resistance that occurs between the

In the above structure, the first protrusion 22 of the intermediate lever 20 is fitted into the burred hole 23 on the base plate 21, and the part of the first protrusion 22 protruding from the hole 23 is pulled out. If the chrysanthemum washer 28 for locking is engaged and the intermediate lever 20 is pivotally attached to the base plate 21, assembly is easier than using the conventional method of pivotally attaching the intermediate lever to the base plate using a pin. It can save time and
The number of parts can be reduced.

As explained above, this invention consists of a base plate, a control lever rotatably attached to the base plate, and an intermediate lever made of resin that is driven in accordance with the control lever operation ('FJK). A cylindrical protrusion serving as a driving fulcrum is integrally provided in a protruding manner, and the protrusion is fitted into a fitting hole protruding from the base plate to press a button on a control lever device such as a heater. Since the peripheral edge is burred into an annular flank shape, the axial dimension of the fitting hole in the base plate is more than twice the thickness of the base plate, and it can be used as the driving fulcrum of the resin intermediate lever. The axial contact support area with the cylindrical protrusion can be significantly increased. The contact is
Surface contact occurs on the cylindrical circumferential surface that is long and smooth in the axial direction, and is not a so-called edge contact, so there is no damage, and support in the vertical and rotational directions is stable, such as falling and wobbling. Moreover, the supporting strength against bending moment and shearing force is increased, the durability is improved, and smooth rotation can be guaranteed for a long period of time without lubrication.

In addition, since it is only necessary to perform burring on the fitting hole of the base plate, it can be carried out easily and at low cost.

Furthermore, in order to reduce the sliding resistance with the base plate, the resin intermediate lever has an annular bulge formed on the base plate side, especially around the part that becomes the drive fulcrum. The inner annular recess can be used as in the embodiment shown in Figure 3, and the base plate can be assembled with the burring part (annular flange) of the fitting hole facing the recess side. Therefore, the base plate and the intermediate lever can be assembled in close contact with each other with a low bulk, and there is no problem in installing the chrysanthemum washer for preventing removal, and the protruding dimension of the cylindrical convex part can be significantly shortened, making it easier for automobiles. The ease of assembling this type of control lever device to the instrument panel in front of the driver's seat, which does not have sufficient space in the vertical direction, can be improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional control lever device;
FIG. 2 is a sectional view taken along the line I--I, and FIG. 3 is a partial sectional view showing the main parts of the control lever device according to this invention. '20...Intermediate lever, 21...Base plate 1.22...First convex portion, 23...
...hole.

Claims (1)

[Scope of utility model registration request] It consists of a base plate, a control lever rotatably attached to the base plate, and an intermediate lever made of resin that is driven in response to the operation of the control lever, and the intermediate lever has an integral cylindrical protrusion that serves as a driving fulcrum. A control lever device such as a heater is provided with a convex portion that protrudes from the base plate 1 and is fitted into a fitting hole drilled in the base plate 1, so that the peripheral edge of the base plate fitting hole has an annular flange shape. A control lever device for a heater, etc. in an automobile, characterized by being subjected to a burring process as shown in FIG.