JPH10278548A - Control lever device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the extrusion of grease due to the movement of a pin at the time of moving the pin in a control groove by forming a space between each end of the control groove and the pin even in the case where the pin reaches the end of the control groove. SOLUTION: A device 1 for driving a damper 2 is formed of a driving lever 3 to be turned by a motor actuator 5 and a driven lever 4 to be driven by this driving lever 3. In this case, when the driving lever 3 is operated by the motor actuator 5, a pin 7 is moved to a left end, and the driven lever 4 is turned clockwise around a driving shaft 8 as a fulcrum. When the pin 7 abuts on a stopper 10b, the driving lever 3 is stopped. Furthermore, when the pin 7 is moved to a right end for return, the driving lever 3 abuts on a stopper 10a and stops. With this structure, a space is formed in a left and a right ends 9a, 9b of a control groove 9, and the grease is left in these spaces so as to prevent the extrusion of the grease.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control lever device used for transmitting a driving force from one side to another side, and is particularly used for opening and closing a damper and the like used in a vehicle air conditioner.

[0002]

2. Description of the Related Art In an automotive air conditioner, the flow direction of air flowing inside is controlled by opening and closing a plurality of dampers disposed inside. For example, in an air mixing damper, The ratio of the air reaching the heater core changes, and the blown air temperature is controlled by the air ratio.

The damper is opened and closed by rotating a drive shaft, which is transmitted from a motor actuator that outputs a control drive force to the drive shaft via a link mechanism. For example, as shown in Japanese Utility Model Laid-Open Publication No. Sho 63-179213, in the air mix damper 101, in the conventional mechanism shown in FIG. Then, the pin 106 provided at the other end transmits the control output to the driven lever 103 while moving in the Y-shaped control groove 104 of the driven lever 103.

In the driven lever 103, a damper 101 is provided on a shaft 102 serving as a rotation fulcrum, and the position of the damper 101 is changed by the rotation of the driven lever 103 about the shaft 102 as a fulcrum. The coupling relationship between the driven lever 103 and the driving lever 105 is such that a pin 106 is disposed in a Y-shaped control groove 104, and the pin 1
The control force is output via the driven lever 103 by the movement of 06 in the groove.

[0005]

The pin 106 inserted into the Y-shaped control groove 104 moves from the position indicated by the solid line in FIG. 4 to the position indicated by the alternate long and two short dashes line, and reaches the end. Grease is put in the control groove to improve the sliding of the pin 106, and this grease is gradually pushed to the end side as the pin 106 slides, and Will gather. It is only necessary to gather at the end, but when the pin reaches the end, the grease loses its escape area and the grease is pushed out of the groove, causing the control groove to be cut off.

As a countermeasure against this, it was considered that the problem would be solved if the control groove was made longer than the conventional moving distance of the pin. Has hit the end of the control groove and pushes out the grease.

Accordingly, an object of the present invention is to prevent grease from being pushed out by a pin moving in a control groove.

[0008]

A control lever device according to the present invention has a control groove in which a pin is inserted into one of a driving lever and a driven lever and the other is inserted and moved to transmit driving force. In the control lever device, when the pin moves in the control groove, a space is formed between the pin and the end even when the pin reaches the extreme end.

For this reason, even if the pin moves in the control groove and reaches the extreme end, since air is formed between the end and the end, the grease remains at that portion and is not pushed out by the pin. Absent.

As a specific example of forming a space, a stopper is provided on one of the driving lever and the driven lever, and a space is formed by contacting the other stopper not provided with the stopper with the stopper. (Claim 2). For this reason, the stopper comes into contact with the other lever having no stopper, so that a space is created.

Further, as an example of forming the space at the same time, the space is formed by a concave portion provided at the end of the control groove (claim 3). For this reason, the pin reaches the end of the control groove, but does not enter because the concave portion is smaller than the diameter of the pin, and the grease is not pushed out.

[0012]

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

FIGS. 1 and 2 show a control lever device 1 for driving (opening / closing) a damper 2 used in an air conditioner for a vehicle or the like. The control lever device 1 includes a drive lever 3 rotated by a motor actuator 5 described below and a driven lever 4 driven by the movement of the drive lever 3.

The drive lever 3 has one end fixed to the motor actuator 5 and the output shaft 6 and the other end connected to a pin 7.
Is protruding. The driven lever 4 has an inverted Y-shape,
At the upper end, the end of the damper 2 is used by a fixed drive shaft 8 in a case (not shown) or the like. And, at the lower end, an inverted Y-shaped control groove 9 is formed at the portion which expands to the left and right.

The control groove 9 has an upper end 9a, a right end 9b,
The drive lever 9 has a left end 9c,
A protruding pin 7 is inserted into the groove and slides in the groove.

When the drive lever 3 is moved by the motor actuator 5, the pin 7 moves from the position indicated by the solid line to the position indicated by the two-dot chain line.
Is moved, whereby the driven lever 4 is rotated clockwise about the drive shaft 8 as a fulcrum. When the pin 7 reaches the two-dot chain line, the drive lever 3 is moved to the stopper 10b on the left side in the figure.
, The drive lever 3 stops. As a result, a space is created at the left end 9c of the control groove 9. Therefore, the grease is not pushed into the space.

When the pin 7 moves from the position indicated by the two-dot chain line and returns to the position indicated by the solid line, the drive lever 3 hits the stopper 10a and stops at that position. Thus, a space is created even at the right end 9b of the control groove 9. Therefore, grease does not enter this space and be pushed out at the same time as having it on the left end side.

The motor actuator 5 houses a motor, a speed reduction mechanism, and the like inside, and is appropriately rotated left and right within a predetermined angle range. This motor actuator 5 is well known and will not be described further.

FIG. 3 shows another embodiment of the present invention. In this example, in order to create a space, a concave portion 11a, a right end 9b and a left end 9c of a control groove 9 formed in the driven lever 4 are formed. 11b is provided. These recesses 11a, 11b
Is opened at the right end 9b and the left end 9c, but the opening width is smaller than the diameter of the pin 7, and even when the pin 7 reaches the end, the end is a stopper and the pin 7 is stopped.
11b is left as a space, so that grease does not enter the space and is pushed out.

[0020]

As described above, according to the present invention, even if the pin moves in the control groove and reaches the extreme end, a space is formed between the pin and the end, so that grease remains in the space. It is not extruded and does not cause grease breakage.

[Brief description of the drawings]

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

FIG. 2 is a front view of the driven lever according to the first embodiment.

FIG. 3 is a front view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control lever device 2 Damper 3 Drive lever 4 Follower lever 5 Motor actuator 7 Pin 9 Control groove 9a Upper end 9b Right end 9c Left end 10a, 10b Stopper 11a, 11b Groove

Claims (3)

[Claims] 1. A control lever device for transmitting a driving force having a pin in one of a driving lever and a driven lever and a control groove in which the pin is inserted and moved in the other, wherein the pin is the control groove. A control lever device characterized in that a space is formed between the innermost end and the outermost end of the control lever device when the innermost end of the control lever is moved. 2. A drive lever and a driven lever each having a stopper provided on one of them, and a space formed by contacting the other stopper not provided with the stopper with the stopper. The control lever device according to claim 1. 3. The control lever device according to claim 1, wherein a space is formed by a concave portion provided at an end of the control groove.