JP2546346Y2 - Click mechanism in the control device of automotive air conditioner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a click mechanism in a control device of a vehicle air conditioner.

[0002]

2. Description of the Related Art As shown in FIGS. 4 and 5, a conventional rotary control device of this kind rotates a drive bevel gear 2 by rotating a control knob 1 to transmit rotation to a driven bevel gear 3. In general, the air conditioner is operated by using a control cable 5 attached to an arm 4 provided on a part of the driven bevel gear 3 to change the motion into a linear motion.

In the above-mentioned conventional structure, the bearing a of the driving bevel gear 2 and the bearing b of the driven bevel gear 3 are mounted at arbitrary points on the axes of the respective bevel gears. The area of the base 6 is required to be large, and the place where the driven bevel gear 3 is arranged is limited below the base 6,
As a result, there is a risk that the bevel gears 2 and 3 are loaded by the click mechanism in a direction in which the two bevel gears are separated from each other and play is generated. In other words, reference numeral 7 denotes a click-shaped brim-shaped ring which is fixed to a part of the drive bevel gear 2, and presses a ball 8 against the bevel gear 2 with a spring 9 to perform a click operation. There is a possibility of causing a problem.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the conventional example to reduce the area of the control base required for the bearing, and eliminates the restriction on the location of the driven bevel gear to reduce the design. It is another object of the present invention to improve the click mechanism and to prevent the two bevel gears from being separated from each other and causing backlash.

[0005]

The click mechanism in the control device for an air conditioner for a vehicle according to the present invention has the following structure as means for achieving the above object.

(1) A drive bevel gear that engages with the knob and a driven bevel gear that engages with the drive bevel gear perform linear motion via a control cable by an arm provided on a part of the driven bevel gear. In the control device as described above, a part of the bearing of the control base having a bearing that supports the center hole of the driven bevel gear is extended to form a bearing that supports the tip of the driving bevel gear on the inner surface thereof, and A wedge-shaped ring constituting a part of a click mechanism provided on the control base is provided on a back surface of the driven bevel gear at an engagement portion of both bevel gears.

[0007]

1 and 2 are a partial plan view and a vertical sectional front view showing an embodiment of the present invention, and FIG. 3 is a partially enlarged view of FIG.

In the drawing, reference numeral 1 denotes a knob which engages with the drive bevel gear 2 and
Is a driven bevel gear and is engaged with the drive bevel gear 2. Driven bevel gear 3
Is provided with an arm 4 so that a linear motion can be performed via a control cable 5 attached to the arm 4. Reference numeral 6 denotes a control base which supports the center hole of the driven bevel gear 3 by means of a bearing d.
To form A click ring 7 is fixed to a part of the lower surface of the driven bevel gear 3, and a click device including a ball 8 and a spring 9 attached to a base 6 engages both bevel gears 2 and 3. It works in the direction that doesn't leave.

[0009]

[Effects of the Invention] The effects of the present invention are as follows.

(1) The area required for the bearing of the control base can be reduced, and the driven bevel gear can be arranged on the same side of the control base as the drive bevel gear.

(2) As a result of the above, the click mechanism can be arranged so that both bevel gears act in directions that do not separate from each other.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional front view showing an example of the present invention.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a plan view showing a conventional example.

FIG. 5 is a longitudinal sectional front view showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 knob 2 drive bevel gear 3 driven bevel gear 4 arm 5 control cable 6 control base 7 brim-shaped ring 8 ball 9 spring a bearing b bearing c bearing d bearing

Claims (1)

(57) [Scope of request for utility model registration] 1. A drive bevel gear engaged with a knob, and a driven bevel gear engaged with the drive bevel gear, wherein an arm provided on a part of the driven bevel gear performs linear movement via a control cable. In the control device, a part of the bearing of the control base having a bearing for supporting a center hole of the driven bevel gear is extended to form a bearing for supporting a tip of the driving bevel gear on an inner surface thereof, and the control is performed. A click mechanism in a control device for an air conditioner for an automobile, wherein a collar in a shape of a part of a click mechanism provided on a base is provided on a back surface of the driven bevel gear at an engagement portion of both bevel gears.