JPH0436517Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button switch control device used, for example, in a mode changeover switch of an automobile air conditioner, and in particular, when one of a pair of push button switches is pushed in, the other one protrudes. Regarding equipment.

The inside/outside air selector switch of an automobile air conditioner is a switch that allows you to choose between introducing outside air or not.Two switches are installed side by side and switching between inside and outside air is performed by operating both switches. ing. Such a selection switch must be configured so that when one side is pushed in, the other side automatically returns (projects out), but conventional devices use a flexible, non-stretchable rope, and the action of this rope causes the above-mentioned It was common to obtain functions. However, this conventional device has problems in terms of operational reliability, as it requires special care when winding the rope, and accidents such as rope breakage are not uncommon.

The present invention consists of a pushbutton switch control device that has the above functions using only a rigid body without using a flexible material such as a rope. The switch plates are interlocked by an interlocking lever having a rotational fulcrum between both switch plates, and a click hole is formed in one of the pair of switch plates corresponding to the push-in position and the protrusion position of the switch plate. It is characterized in that a click ball is provided at a fixed position and is biased to move in the direction of fitting into the hole.

The invention will now be described with reference to the illustrated embodiments. An operation panel 11 provided in the vehicle interior is provided with a temperature adjustment lever 12, an air volume adjustment switch 13, a mode changeover push button switch 14, and an inside/outside air changeover switch 15. The inside/outside air changeover switch 15 is a two-way switch to which the present invention is applied; when the outside air introduction switch 16 is pressed, outside air is introduced, and when the circulation switch 17 is pressed, outside air is introduced.

The outside air introduction switch 16 and the circulation switch 17 each have integral switch plates 19 and 20, and these switch plates 19 and 20 are located in parallel.
It is supported slidably in its longitudinal direction. A rotation fulcrum seat 21 is provided between the switch plates 19 and 20, and an interlocking lever 22 is rotatably mounted on this rotation fulcrum seat 21 by a shaft 23. The interlocking lever 22 has a substantially symmetrical shape with respect to the shaft 23,
Its both ends are pivotally connected to switch plates 19 and 20 by pins 24 and 25, respectively. This configuration constitutes an interlocking mechanism in which the circulation switch 17 protrudes when the outside air introduction switch 16 is pushed in, and the outside air introduction switch 16 projects when the circulation switch 17 is pushed in.

Two click holes 26, 26 are bored in the switch plate 20 at different positions in the push-in direction, and a compression spring 2 is provided below the click holes 26.
A click ball 28 is located, which is biased towards the click hole 26 by a button 7. The two click holes 26 correspond to the push-in position and the protrusion position of the circulation switch 17, and the click ball 28 fits into the click hole 26 in either position.
The switch plate 20, that is, the circulation switch 17 and the outside air introduction switch 16, are stably held in both positions.

Therefore, the push-button switch control device having the above configuration includes the outside air introduction switch 16 and the circulation switch 1.
When one of 7 is protruding, the other is held in the pushed-in position, and no malfunction occurs.

The switch plate 20 is connected to an actuating device 30 of the inside/outside air switching door 29, and when the circulation switch 17 is pushed in, this actuating device 30 switches between inside and outside air using the negative pressure of the engine's negative pressure generation source, for example, the intake manifold 31. When the door 29 is rotated to the outside air non-introducing position and the circulation switch 17 is protruded,
That is, when the outside air introduction switch 16 is pushed in, the inside/outside air switching door 29 is rotated to the outside air introduction position. Of course, the switch plate 20 can be connected to other actuators. switch board 1
9 is not connected to anything and is playing. In other words, the outside air introduction switch 16 is provided merely for display purposes.

As described above, according to the present invention, with a simple configuration in which both ends of an interlocking lever having a pivot point between both switch plates are pivotally connected to a switch plate that is interlocked with a pair of pushbutton switches, one When one switch is placed in the pushed-in position, the other switch is reliably placed in the extended position. It is possible to obtain a two-way switch that operates reliably and is free from failure. Further, a click hole is formed in one of the pair of switch plates corresponding to the push-in position and the protrusion position of the switch plate, and a click ball provided at a fixed position is fitted into this click hole, so that the pair of push The button switch can be reliably held in the depressed position and the protruded position, and a stable operating feeling can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the push button switch control device according to the present invention, Fig. 2 is a plan view of the main part showing the same part as a cross section, and Fig. 3 shows an operating state different from Fig. 2. FIG. 4, which is a plan view of the main part, is a sectional view taken along the - line in FIG. 2. 15...Inside and outside air selection switch, 16...Outside air introduction switch, 17...Circulation switch, 19, 20
...Switch plate, 21...Rotation fulcrum seat, 22...
Interlocking lever, 23...shaft, 26...click hole,
27... Compression spring, 28... Click ball, 2
9...Inside/outside air switching door, 30...Operating device.

Claims (1)

[Scope of claim for utility model registration] Advances and retreats in conjunction with a pair of push button switches.
A pair of switch plates arranged in parallel; An interlocking lever whose both ends are pivotally connected to the pair of switch plates and whose middle part is a rotational fulcrum; One of the pair of switch plates has a push-in position and a 1. A push button switch control device comprising: a click hole formed corresponding to a protruding position; and a click ball provided at a fixed position and biased to move in a direction to fit into the click hole.