JPS6231286Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control lever device, and particularly to a control lever device suitable for use in a controller in an air conditioner for an automobile.

Generally, the operating conditions of an automobile air conditioner are set by operating various levers such as a mode lever and a template lever attached to a controller disposed on an instrument panel. As this type of controller, there is one shown in FIG. 1, for example. In FIG. 1, a mode lever 3 is rotatably supported at one end by a shaft 4 on a board 2 of a controller 1, and the tip of the lever 3 protrudes outside a slit 6 of a control panel 5. A template lever 7 for selecting the blowing temperature is provided below, and this lever 7 also projects out of the slit 8 of the control panel 5. One end of a wire 9 housed in a synthetic resin outer tube is attached to the base end of the mode lever 3, and the other end of this wire 9 is connected to various blowout doors (not shown) to be controlled. When the lever 3 is moved left and right, a wire 9 opens and closes the blow-off door or fixes it in an intermediate position.

The operating lever device of such a controller is provided with a click mechanism to maintain the stop position of the lever, provide a click feeling when the lever moves, and prevent the door from fluctuating due to the influence of wind pressure. An example of an operating lever device having this click mechanism is shown in FIG. That is, a leaf spring 11 is attached to the middle part of the operation lever 10 (corresponding to the mode lever 3 or the template lever 7) with one end fixedly attached, and this leaf spring 11 is attached to the shaft 4 on the base plate 12. It is engaged with a group of 13 click grooves arranged in an arc shape centered at . And leaf spring 1
As the lever 10 rotates, the free end of the leaf spring 11 repeatedly engages the group of click grooves 13 while being pressed against it by the elastic force of the leaf spring 11 itself.
A click feeling is imparted to the movement operation of the lever 10, and the stop position of the lever 10 is maintained when the movement of the lever 10 stops at a predetermined position (in a specified mode and specified temperature control).

However, in such conventional operating lever devices, since the leaf spring is directly attached to the operating lever, the tone of the sound generated by the engagement between the free end of the leaf spring and the click groove becomes high pitched. However, there was a problem with the lack of solidity. This tendency is remarkable when a metal spring and a synthetic resin groove are combined, and in a template lever.The reason is that the template lever has a continuous and uniform click groove that is finer than the mode click over the entire rotation range. This is because the lever can be stopped and held at any position. Furthermore, as the speed of movement of the operating lever increases, the tone tends to become even higher. Moreover, such sounds have a higher tone than other sound sources in a closed automobile interior, and impair the sense of hearing.

The present invention has been made in view of these conventional problems, and aims to solve the above problems by interposing a buffer member between the leaf spring and the lever.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a diagram showing an embodiment of the present invention. First, to explain the configuration, an operating lever 10 is rotatably supported on a board 12 of a controller or the like by a shaft 14 formed with a pin or the like at one end, and the tip of the lever 10 is raised up on the front end of the board 12. The lever 10 is slidably passed through a slit 16 formed in a front panel 15 of a control panel or the like within the rotational plane of the lever 10, and protrudes forward. One end of a leaf spring 11 is fixed to a suitable position in the middle of the operating lever 10 via a buffer member 17 made of a tube or the like made of an elastic material such as synthetic resin rubber. That is, one end of the leaf spring 11 is punched and bent into a substantially square shape, and then the rising portion on the tip side is curved into an S shape, and the tube 17 as a buffer member is fitted into this deformed end. The ends into which the tube 17 is fitted are fitted into a pair of through holes drilled in the lever 10, and the lever 10 is held between the S-shaped portions, and the lever 10 is stopped. I'm wearing it. Also,
The free end portion of the leaf spring 11 is bent approximately parallel to the upper surface of the substrate 12, and a substantially hemispherical convex protrusion 18 is formed on the surface facing the substrate 12.

At a position corresponding to the protrusion 18 on the substrate 12, a group of click grooves 13 forming a continuous uneven shape is formed along an arcuate locus drawn as the lever 10 of the protrusion 18 rotates. (See FIG. 1), the protrusion 18 presses against the group of click grooves 13 under the elastic force of the leaf spring 11, and is adapted to engage with each groove 13 and move.

Next, the effect will be explained.

When the projection 18 of the leaf spring 11 changes its engagement state with the click groove 13 as the lever 10 rotates, the projection 18 moves up and down due to the elastic force of the leaf spring 11 so as to strike the click groove 13. It acts on the body, producing a crisp sound like a clicking sound. This sound vibration is transmitted to the lever 10, resulting in a high-pitched sound that impairs the sense of hearing. However, in this embodiment, a buffer member 1 is provided between the leaf spring 11 and the lever 10.
7, the vibrations are prevented from being transmitted to the lever 10, and a high-pitched tone is not produced, and only the crisp clicking sound can be heard. Therefore, the lever can be operated comfortably even in a closed room such as a car interior.

Note that the fixing mechanism of one end of the leaf spring to the lever is not limited to the above-mentioned embodiment, and a structure in which a tube is bonded to the lever, for example, may also be applied. Further, the buffer member is not limited to a tube, and may be formed by baking an elastic material such as rubber. In addition, if the tube is made of heat-shrinkable resin and then heated and fixed after being attached to the leaf spring, it can be fixed simply and reliably.

Furthermore, sufficient effects can be obtained by simply interposing a buffer member 17 between the lever 10 and the leaf spring as shown in FIG.

As explained above, according to the present invention, since the buffer member is interposed between the leaf spring and the lever, it is possible to prevent the generation of high-pitched sounds that impair the sense of hearing. can get.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a controller of an automobile air conditioner, Fig. 2 is a longitudinal sectional view showing a conventional example,
Fig. 3 is a vertical sectional view showing one embodiment of the present invention;
The figure is a sectional view showing another embodiment of the present invention. 10... Operating lever, 11... Leaf spring, 12...
...Substrate, 13...Click groove, 14...Shaft, 15
...Panel, 16...Slit, 17...Buffer member.

Claims (1)

[Scope of utility model registration request] One end of the operating lever is rotatably supported on a board, one end of a leaf spring is fixed to the middle part of this lever, and the free end of this leaf spring is connected to a click groove arranged in an arc shape on the board. An operating lever device that is engaged with a group of levers, characterized in that a buffer member is interposed at a fixed portion between the leaf spring and the lever.