JPH051447Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an operating mechanism for controlling an automobile air conditioner via a cable by operating a temperature control lever.

[Prior Art] Automobiles equipped with hot water type heating devices are equipped with a temperature control lever in order to be able to adjust the heating temperature in the vehicle interior.

As shown in FIG. 2, the temperature control lever 10
is arranged on a heater control panel 12 attached to the instrument panel. The temperature control lever 10 has two cables 14 and 1.
6 are connected at one end. The other end of one cable 14 is connected to an operating lever 22 of an air mix damper 20 provided inside the heater body 18. The other end of the other cable 16 passes out from the dash panel 24 toward the front of the vehicle and is connected to an operating lever 28 of a water valve 26 .

In the above operating mechanism, in the illustrated state in which the temperature control lever 10 is moved to its clockwise swing limit, the air mix damper 20 is positioned at one swing limit, and the water valve 26 closes the hot water passage. are doing. When the temperature control lever 10 is swung counterclockwise from this state, tension is applied to the cables 14 and 16, the air mix damper 20 is moved toward the other swing limit, and the water valve 26 is moved toward the other swing limit.
opens the hot water passage and increases its opening degree.
Furthermore, when the temperature control lever 10 is swung clockwise, a compressive force acts on the cables 14 and 16, causing a change in the air mix damper 20 and the water valve 26 in the opposite direction. Ru.

By the way, under environmental conditions such as summer when the outside temperature is high, the temperature control lever 10 is set to the clockwise swing limit shown in FIG. 2, and the heating function is stopped.

However, under such environmental conditions, thermal expansion occurs in the cables 14 and 16, and in particular, the thermal expansion of the cable 16 connected to the water valve 26 may cause problems in temperature regulation. That is, the cable 16 includes an inner cable 30 and an outer cable 32 that accommodates and guides the inner cable 30. Since the thermal expansion of the outer cable 32 is significantly larger than that of the inner cable 30, the inner cable 30 Outer cable 3
It will pull you into 2. the result,
Even though the temperature control lever 10 is set to its clockwise swing limit, the operating lever 28 of the water valve 26 is swung to the position shown by the broken line in FIG. 2, and the water valve 26 is opened. As a result, hot water leaks into the heater body 18, impairing the cooling effect.

[Problems to be solved by the invention] Taking the above-mentioned facts into consideration, the purpose of the invention is to obtain an operation mechanism for an automobile air conditioner that can accurately control the water valve even when there are changes in the outside temperature, etc. It is.

[Means for Solving the Problems] In the operating mechanism of the automotive air conditioner according to the present invention, the first cable connects the temperature control lever and the damper operating section of the heater main body; and a second cable that connects to the operating section of the water valve, and these cables are routed so that when a tensile force is applied to one cable when operating the temperature control lever, a compressive force is applied to the other cable. It is said that the configuration is as follows.

[Function] In the operation mechanism of the automobile air conditioner configured as described above,
Even if the lengths of the first cable and the second cable change due to temperature changes such as outside air temperature, in this case, the change in the length of one cable acts to offset the change in the length of the other cable. This prevents the water valve control from becoming erroneous.

[Embodiment] FIG. 1 shows an embodiment of the operating mechanism of an automobile air conditioner according to the present invention, in which a temperature adjustment lever 38 is arranged on a heater control panel 36. As shown in FIG. One end of the temperature adjustment lever 38 is swingably supported by the base portion 36A of the heater control panel 36. The heater control panel 36 is provided at approximately the center of the instrument panel in the vehicle width direction.

A heater main body 40 is located below the instrument panel on the front side of the vehicle.
is located. An air mix damper 42 is provided inside the heater body 40 and is pivotally supported in an air passage. The air mix damper 42 changes the mixing ratio of warm air and cold air in accordance with the swing angle, thereby making the temperature of the air blown into the vehicle interior variable. An operating lever 44 is fixed to a shaft portion of the air mix damper 42. Furthermore, a heater radiator 46 is provided in the heater main body 40 . Engine cooling water (hereinafter referred to as hot water) is circulated through the heater radiator 46 via a radiator hose 48.

A water valve 50 is disposed in the middle of the radiator hose 48 on the hot water supply side to the heater radiator 46 . The water valve 50 is a rotary valve type, and by swinging the operating lever 52, the amount of hot water supplied to the heater radiator 46 can be adjusted steplessly, and the supply of hot water can be stopped. ing. The water valve 50 is arranged in an engine room 58 separated from the vehicle interior 54 by a dash board 56.

The temperature control lever 38 and the operating lever 44 are connected by a first cable 60. The first cable 60 includes an inner cable 62 and an outer cable 64 that accommodates and guides the inner cable 62. One end of the inner cable 62 is locked to the middle part of the temperature control lever 38, and the other end is locked to the tip of the operating lever 44. One end of the outer cable 64 is secured to the base portion 36A via a mounting bracket 66, and the other end is secured to the heater main body 4.
0 via a mounting bracket 66.

As a result, when the temperature adjustment lever 38 is moved to its swing limit in the direction of arrow A, the operating lever 44 is moved to its swing limit in the direction of arrow C, and in this state, the air mix damper 42 has been moved to the swing limit in the direction of arrow E.

The operating lever 44 and the operating lever 52 are connected by a second cable 68. The second cable 68 includes an inner cable 70 and an outer cable 72 that accommodates and guides the inner cable 70.
It is equipped with One end of the inner cable 70 is locked to the tip of the operating lever 44 , and the other end is locked to the tip of the operating lever 52 . One end of the outer cable 72 is secured to the wall of the heater body 40 via a fitting 66, and the other end is secured to the water valve 50 via a bracket 74 and a fitting 66.

As a result, when the operating lever 44 is moved to the swing limit in the direction of arrow C, the operating lever 5
2 has been moved to the swing limit in the direction of arrow G, and in this state, hot water supply to the heater radiator 46 is stopped.

Next, the operation of this embodiment will be explained.

In the state shown in FIG.
8 has been moved to the swing limit (the coolest position) in the direction of arrow A. In this state, the operating lever 44 is moved to its swing limit in the direction of arrow C, and the operating lever 5
2 has been moved to the swing limit in the direction of arrow G. As a result, hot water is not supplied to the heater radiator 46, so warm air is not blown into the passenger compartment 54.

When the temperature control lever 38 is moved in the direction of arrow B from the state shown in FIG.
The operating lever 44 is moved in the direction of arrow D by the tension acting on the inner cable 62. As the operating lever 44 moves, the compressive force acting on the inner cable 70 of the second cable 68 causes the operating lever 52 to move.
is moved in the direction of arrow H. Thereby, the water valve 50 increases the amount of hot water supplied to the heater radiator 46 in response to an increase in the amount of movement of the operating lever 52 in the direction of arrow H. On the other hand, the air mix damper 42 increases the ratio of air passing through the heater radiator 46 to air not passing through the heater radiator 46 in response to an increase in the amount of movement of the operating lever 44 in the direction of arrow D. Therefore, warm air is blown into the vehicle compartment 54 at a temperature corresponding to the amount of movement of the temperature control lever 38 in the direction of arrow B. Temperature control lever 38 is indicated by arrow B
state of being moved to the limit of oscillation in the direction (maximum WARM
position), the temperature of the warm air is maximum.

The temperature control lever 38 is at an intermediate position between the swing limit in the direction of arrow A and the limit of swing in the direction of arrow B.
It is possible to move in either direction.

Note that when the temperature adjustment lever 38 is moved in the direction of arrow A, the operating lever 44 is moved by the compressive force acting on the inner cable 62 of the first cable 60.
is moved in the direction of arrow C, and the operating lever 52 is moved in the direction of arrow G by the tensile force acting on the inner cable 70 of the second cable 68.

When the outside temperature rises significantly during summer or the like, significant thermal expansion may occur in the first cable 60 and the second cable 68. This expansion is greater than that of the inner cables 62, 70.
2, for which each inner cable 62,
The length of the cable 70 is relatively short compared to each of the outer cables 64 and 72. Under such temperature conditions, the temperature adjustment lever 38 is moved to its swing limit in the direction of arrow A.

Therefore, in the first cable 60, since the inner cable 62 is relatively short in length with respect to the outer cable 64, the operating lever 44
is from the original swing limit position in the direction of arrow C to arrow D.
in a position moved towards a direction. On the other hand, the second
Similarly, for the cable 68, the inner cable 70 is shorter relative to the outer cable 72, but since the operating lever 44 is in a position moved from its original position in the direction of arrow D, the length of the inner cable 70 is shorter than the outer cable 72. The shortening of the relative length is offset, and the operating lever 52 is located at its original swing limit in the direction of arrow G, and the water valve 50 reliably stops supplying hot water.

As described above, in this embodiment, the intended purpose of the present invention can be achieved, and the following effects can also be obtained at the same time.

That is, since the second cable 68 only needs to have a length that connects the operating lever 44 and the operating lever 52, the cable length is the sum of the length of the first cable 60 and the length of the second cable 68. is shorter than that of conventional mechanisms. As a result, the effect of reducing the operating force, the effect of saving materials, and the weight reduction of the automobile are achieved by reducing the sliding resistance between the outer cable and the inner cable.

Furthermore, since only one cable connects the temperature control lever 38 and the operating lever 44, it is advantageous in terms of space and the degree of freedom in design increases.

[Effects of the invention] As explained above, the operation mechanism of the automotive air conditioner according to the invention includes a first cable that connects the temperature control lever and the damper operation part of the heater main body;
A second cable connects the damper operation section of the heater body and the water valve operation section, and when a tensile force is applied to one cable when operating the temperature control lever, a compressive force is applied to the other cable. Because it is arranged so that it works,
This has the effect of accurately controlling the water valve even if there is a change in temperature such as the outside temperature.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing an embodiment of an operating mechanism for an automobile air conditioner according to the present invention, and FIG. 2 is a schematic plan view showing a conventional operating mechanism. 38... Temperature adjustment lever, 40... Heater body, 42... Air mix damper, 44, 52...
...Operation lever, 46...Heater radiator, 50
...Water valve, 60...First cable, 6
2... Inner cable, 64... Outer cable, 68... Second cable, 70... Inner cable, 72... Outer cable.

Claims (1)

[Scope of utility model registration request] In an operating mechanism for an automobile air conditioner that can simultaneously control a damper and a water valve of a heater main body via a cable by operating a temperature control lever, the cable connects the temperature control lever and a damper operating section of the heater main body. and a second cable that connects the damper operation section of the heater main body and the operation section of the water valve,
An operating mechanism for an automotive air conditioner, characterized in that these cables are routed so that when a tensile force is applied to one cable when a temperature control lever is operated, a compressive force is applied to the other cable.