JPS5835529Y2 - Automotive air conditioner control lever device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a control lever device that is effective for driving dampers used in automobile air conditioners such as coolers and heaters.

For example, when switching whether the air supplied to the heater core is taken in from inside the vehicle or outside air, or when switching whether the air warmed by the heater core is blown out towards the windshield or towards the feet. This is done by changing the direction of the damper installed in the ventilation passage in various ways using a lever installed in the driver's seat via a cable.

Conventionally, a lever of the type shown in FIG. 1 has been used for moving such a damper driving cable.

That is, a small hole 4 (or a protrusion) for connecting one end of the cable.

same as below.

) is rotatably pivoted to a base plate 1 by a shaft 2 provided at one end of the lever 3.
By moving the knob 5 fixed to the end of the lever 3 left and right along an arc, the damper drive cable whose one end was connected to the small hole 4 was pushed and pulled, and the other end of the cable was connected. Move the damper to the desired position.

However, in recent years, safety measures for automobiles have become important, and the amount by which various operating devices installed in the driver's seat protrude from the dash board has been regulated.

For this reason, in the conventional lever device in which the knob 5 attached to the tip moves in an arc as shown in FIG.
It is difficult to suppress the amount of protrusion of the knob 5 from the dash board below a regulatory value, and it has become necessary to use a lever device that allows the knob to move linearly.

Therefore, conventionally, a lever device as shown in FIG. 2 has been used to solve the above-mentioned problem.

That is, one end of a main lever 3a having a small hole 4 for connecting a cable is pivotally attached to a shaft 2 installed on a substrate 1, and one end of the main lever 3a is provided below the main lever 3a. knob 5
The secondary lever 3b to which the secondary lever 3b is fixed is slidably engaged with the shaft 2 in a long hole 6 bored at the other end of the secondary lever 3b, and a pin 8 is planted in the middle of the secondary lever 3b. ,
The pin 8 is slidably engaged with a long hole 7 formed at the front end of the main lever 3a.

Further, the lower part of the pin 8 is connected to a long arc-shaped hole 9 formed in the substrate 1.
It is slidably engaged with.

Since the elongated hole 9 is curved in the opposite direction to the arc centered on the shaft 2, when the sub-lever 3b is moved from side to side by holding the knob 5, the sub-lever 3b is guided by the elongated hole 9 and moves toward the corresponding position. Lever 3b
Move slightly in the length direction (direction of arrow A in Figure 2).

The auxiliary lever 3b moves along the elongated hole 6 of the shaft 2 while being engaged with the main lever 3a, so that the knob 5 moves linearly due to this movement and the movement of the elongated hole 9.

However, in the lever device shown in Fig. 2, there are many sliding parts, so the force required for operation is large due to frictional force, and the structure is complicated, making assembly difficult and causing further problems. There were also many malfunctions such as the occurrence of scratches.

The present invention aims to provide a control lever device for an automobile air conditioner that does not have the above-mentioned drawbacks.

Hereinafter, the present invention will be explained with reference to drawings showing embodiments.

The lever device of the present invention, as illustrated in FIGS. 3 and 4,
A link mechanism is constructed on the board 1 by a roughly T-shaped flat lever 3 having a small hole 4 for connecting one end of the cable, and arm members 10° 11 to which the lever 3 is rotatably pivoted. It is composed of

To explain in more detail, one end of one arm member 10 is connected to the shaft 12.
The arm member 1 is pivotably mounted on the base plate 1 by
The other end of the lever 3 is rotatably connected to one end of the lever 3 by a shaft 13.

A knob 5 is fixed to the other end of the lever 3.

One end of the other arm member 11 is rotatably mounted on the substrate 1 by a shaft 14, and the other end of the arm member 11 is connected to a shaft 15.
The lever 3 is rotatably pivoted to the intermediate portion of the lever 3.

Here, a shaft 13 pivotally connects the first arm member 10 and the lever 3.
The positional relationship between the shaft 15 that pivotally connects the second arm member 11 to this lever 3 and the shaft 14 that pivotally connects this second arm member 11 to the board 1 is the same as that of the operating shaft fixed to the end of the lever 3. The shafts 14, 15, and 13 are determined in order from the knob 5 to the shafts 14, 15, and 13, in other words, the straight line connecting the shafts 13.15 on the lever 3 and the shafts 14.15 at both ends of the second arm 11. The shafts 13, 14, and 15 are arranged so that the angle between the two shafts and Q can change around 180 degrees as the lever 3 rotates.

The control lever device for an automobile air conditioner according to the present invention is constructed as described above, so when the knob 5 at the end of the lever 3 is moved from side to side, the lever 3 rotates around the shaft 13, and the lever 3 rotates around the shaft 13. The knob 5 fixed to the end of the knob 3 attempts to draw an arcuate locus that bulges toward the front, as shown by the broken line X in FIG.

However, as the lever 3 moves, the arm member 11 pivotally attached to the intermediate portion of the lever 3 and the shaft 15 that pivots the lever 3 move in the opposite direction to the broken line X, as shown by the broken line y in FIG. Draw a trajectory that bulges in the direction.

Therefore, as the lever 3 moves, the shaft 13, which is the center of rotation of the lever 3, moves as shown by arrow B, and as a result, the knob 5 fixed to the end of the lever 3 moves approximately linearly. .

As a specific example, for example, 11=71.5z, 12-6
If we configure the lever device as 2 gears, 13-40 gears, and 14=129 demons, and find the locus of point P on the knob that is 175X away from the center of shaft 13, it will be as shown by the dashed line X in Figure 4. , it can be seen that the knob 5 moves approximately linearly.

In addition, in the lever device of the present invention, by appropriately selecting the position of the small hole 4 for cable connection, the trajectory drawn by the small hole 4 as the lever 3 moves becomes almost a straight line. can do.

For example, in the above example, the position of the small hole 4 is 50% away from the center of the shaft 15 and 40% away from the center line of the lever 3.
If the position is shifted, point P on the knob 5 is
When the upper part is moved to the point a t b + c-j, 'k, the center of the small hole 4 is located on the two-dot chain line Y at the points a', b', c'
~J', is known to move up to '.

Although the two-dot chain line Y is not a perfect straight line, it can be approximated to a roughly straight line.

The linear locus of the small hole 4 has the effect of preventing buckling deformation of the cable or iron whose one end is connected to the hole 4 and reducing the operating force of the lever.

The control lever device for an automobile air conditioner according to the present invention is configured and operates as described above, so that in addition to the above-mentioned effects, 1) Since the lever operation knob moves linearly, the amount of protrusion from the dash board is reduced. It can be kept small.

2) Since there are no sliding friction parts, the force required for operation is light.

3) The structure is simple, making it easy to manufacture and reducing costs.
Moreover, there are fewer failures.

It has the following effects and has great practical effects.

[Brief explanation of drawings]

Figure 1 is a plan view showing a first example of a conventional lever device;
The figure is a perspective view showing the second example, and Figs. 3 and 4 show an embodiment of the present invention, Fig. 3 is a perspective view, and Fig. 4 is a plan view. 1: Board, 3 Nilever 10, 11: Arm material, 12.13
, 14, 15: Axis.

Claims (1)

[Scope of utility model registration request] One end of the lever 3 is rotatably connected to the other end of the first arm member 10, which is rotatably connected to the base plate 1 by a first shaft 12, and the other end of the lever 3 is rotatably connected to the base plate 1 by a first shaft 12. A third shaft 14 is attached to one end of the second arm member 11 at a portion of the substrate 1 remote from the arm member.
The intermediate portion of the lever 3 is rotatably connected to the other end of the second arm member 11, and the first arm member 10 and the lever 3 are pivotally connected to each other. Between the shaft 13 and a third shaft 14 that pivotally connects one end of the second arm 11 to the substrate 1, a fourth shaft 15 that pivotally connects the other end of the second arm 11 and the lever 3. and the second and fourth axes 13
．． 15 and the straight line connecting the third and fourth axes 14 and 15 can be changed around 180 degrees by rotating the lever 3, and one end of a cable or the like is attached to a part of the lever 3. A control lever device for an automobile air conditioner that includes a connecting part.