JP3351027B2 - Lever fulcrum structure of vehicle heater device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever fulcrum structure for a vehicle heater device.

[0002]

2. Description of the Related Art Conventionally, in a vehicle heater device, an air mix damper, a mode switching damper, and the like are mechanically operated by operating a lever provided on an operation panel in a vehicle cabin through a link mechanism or a wire. There is something to operate. The lever is rotatably provided with a boss provided on the heater case as a fulcrum. When there are a plurality of levers, the fulcrum of each lever may be overlapped with a common boss and assembled. No. 66699).

[0003]

However, an air mix damper is not required in a vehicle of a boost vent type having no heater core. Therefore, when the fulcrum of each lever is overlapped on a common boss and assembled, if the temperature control lever for operating the air mix damper is removed from the boss, a gap is generated in the direction in which the levers are overlapped. This affects the movement (rotation) of the other lever. Therefore, it was necessary to change the lever fulcrum structure between the case of the heater specification having the heater core and the case of the boost vent specification without the heater core. The present invention has been made based on the above circumstances, and an object of the present invention is to share a lever fulcrum structure between a heater specification and a boost vent specification.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a temperature control lever for controlling the temperature of air blown into a vehicle interior, and a mode for switching between an inlet mode and an outlet mode. A switching lever, as a common fulcrum of the temperature adjustment lever and the mode switching lever, a fulcrum that rotatably supports the temperature adjustment lever and the mode switching lever, and between the temperature adjustment lever and the mode switching lever. An intervening washer fitted to the fulcrum, wherein the fulcrum is a first fitting part in which the temperature adjustment lever and the washer are rotatably fitted, and a first fitting part is formed by the first fitting part. A second fitting portion provided at a tip side of the fulcrum portion with a diameter smaller than that of the first fitting portion, wherein the mode switching lever is rotatably fitted. It is adopted as the means.

[0005]

According to the lever fulcrum structure of the vehicle heater device having the above structure, the fulcrum portion is provided with a first fitting portion and a second fitting portion having different outer diameters, and the second fitting in which the mode switching lever is fitted. The mating portion is provided on the tip side of the fulcrum portion with respect to the first fitting portion where the temperature control lever is fitted with a smaller diameter than the first fitting portion. For this reason, when the present invention is applied to the boost vent specification without the heater core, the temperature control lever and the washer are removed from the first fitting portion, but the mode switching lever fitted to the second fitting portion is not fitted to the first fitting portion. Since the temperature adjustment lever is detached, the fitting position with respect to the fulcrum portion does not shift to the first fitting portion side because it is supported by the step surface between the fitting portion and the second fitting portion.

[0006]

Next, an embodiment of a lever fulcrum structure of a vehicle heater device according to the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the lever fulcrum structure. Vehicle heater device 1
Is composed of a blower unit 2 and a heater unit 3, as shown in FIG. The blower unit 2 includes a blower case 4, a fan 5, a blower motor 6, and an inside / outside air switching damper 7. The blower case 4 is formed with an inside air inlet 8 for circulating the air inside the vehicle (inside air) and an outside air inlet 9 for introducing the air outside the vehicle (outside air). The inside / outside air switching damper 7 includes an inside / outside air switching lever 10 and a wire 11.
(See FIG. 3), and opens or closes either the inside air inlet 8 or the outside air inlet 9 based on the operation of the inside / outside air switching lever 10.

The heater unit 3 includes a heater case 12,
It comprises a heater core 13 and an outlet switching damper 14. The heater case 12 has a defroster outlet 15 for blowing air toward the window glass of the vehicle, a face outlet 16 for blowing air toward the upper body of the occupant, and a foot outlet 17 for blowing air toward the feet of the occupant. Have been. The heater core 13 heats the air passing through the heater core 13 using the engine cooling water supplied through a hot water pipe (not shown) as a heat source. The hot water pipe is provided with a flow control valve (not shown) for adjusting the amount of hot water supplied to the heater core 13. This flow control valve is
The temperature control lever 18 is connected via a wire 19 (see FIG. 3), and the valve opening is adjusted based on the operation of the temperature control lever 18. The outlet switching damper 14 is connected to the outlet switching lever 20 via a link mechanism 21 and the like (see FIG. 3), and based on the operation of the outlet switching lever 20, the defroster outlet 15, the face outlet 16, and the like. The foot outlet 17 is opened and closed.

As shown in FIG. 3, the inside / outside air switching lever 10, the temperature control lever 18, and the air outlet switching lever 20 are provided on a control unit 22 installed in the vehicle interior, and are manually operated by an occupant. . Next, the fulcrum structure of each lever will be described. Each lever 10, 18, 20
The fulcrum 23 is rotatably supported by a fulcrum 23 provided on the side surface of the heater case 12, and is rotated around the fulcrum 23 by an occupant manually operating the control unit 22.
The fulcrum 23 is a boss 23a protruding from the side surface of the heater case 12, and a first boss 23a provided above the boss 23a.
The fitting portion 23b has a second fitting portion 23c provided above the first fitting portion 23b, and includes a boss portion 23a, a first fitting portion 23b, a second fitting portion 23c, and an outer diameter thereof. Form a stepped shape that becomes smaller in order. Therefore, the outer diameter of the boss portion 23a is provided the largest, and the outer diameter of the second fitting portion 23c is provided the smallest (see FIG. 1).

The boss portion 23a is provided when each of the levers 10, 18, and 20 is operated by the control portion 22.
It has a constant height h (see FIG. 4) so that 0, 18, and 20 do not interfere with the side surface of the heater case 12. As shown in FIG. 4, the first fitting portion 23b has a height corresponding to the sum of the thicknesses of the temperature adjusting lever 18 and the washer 24, in which the temperature adjusting lever 18 and the washer 24 are fitted in order. The temperature adjusting lever 18 and the washer 24 fitted to the first fitting portion 23b are supported by a step surface α (see FIG. 1) between the boss portion 23a and the first fitting portion 23b.

As shown in FIG. 4, the second fitting portion 23c
The air outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 are fitted in order, and the air outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 are fitted.
Has a height greater than the sum of the respective thicknesses. The air outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 fitted to the second fitting portion 23c are provided with a step surface β between the first fitting portion 23b and the second fitting portion 23c (see FIG. 1). ). Each of the levers 10, 18, and 20 fitted to the first fitting portion 23b and the second fitting portion 23c via the washers 24 and 25, as shown in FIG. The cap 26 is put on the upper end of the fitting portion 23c and fixed by the screw 27.

The vehicle heater device 1 of this embodiment requires the temperature control lever 18 because of the provision of the heater core 13, but in the case of the boost vent type without the heater core 13, the temperature control lever 18 becomes unnecessary. . Therefore, the temperature adjusting lever 18 and the washer 24 are connected to the first fitting portion 23.
Assuming that the air outlet is removed from b, the air outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10
Since it is supported by the step surface β between the first fitting portion 23b and the second fitting portion 23c, it does not shift to the first fitting portion 23b side. Therefore, the air outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 are connected to the second fitting portion 2 regardless of the presence or absence of the temperature adjustment lever 18 and the washer 24.
Since the state fitted to 3c can be maintained (see FIG. 5), the rotation operation of the air outlet switching lever 20 and the inside / outside air switching lever 10 is not affected. As a result, even when the vehicle heater device 1 of the present embodiment is of a boost vent type without the heater core 13, it can be applied without changing the lever fulcrum structure simply by removing the temperature control lever 18.

[Modification] In this embodiment, the second fitting portion 23
c (on the first fitting portion 23b side), the outlet switching lever 2
0 is fitted and the inside / outside air switching lever 10 is fitted on the upper side, but the positions of the air outlet switching lever 20 and the inside / outside air switching lever 10 may be reversed. Also, the outlet switching lever 20
Alternatively, only one of the internal and external air switching levers 10 may be fitted to the second fitting portion 23c. In the present embodiment, an example in which the valve opening of the flow control valve is adjusted by the temperature control lever 18 has been described. However, an air mix damper that controls the amount of air passing through the heater core 13 is provided,
The opening of the air mix damper may be adjusted. In the present embodiment, the vehicle heater device 1 is used. However, a cooling unit may be provided between the blower unit 2 and the heater unit 3 to provide an air conditioner capable of dehumidifying and cooling.

[0013]

According to the lever fulcrum structure of the vehicle heater device of the present invention, a first fitting portion and a second fitting portion are provided at the fulcrum portion, and the first fitting portion temperature adjusting lever is fitted to the fulcrum portion. Since the mode switching lever is fitted to the second fitting portion provided on the distal end side of the first fitting portion with a smaller diameter than the first fitting portion, the mode switching lever can be fitted to the first fitting portion even if the temperature adjustment lever is removed. It does not shift to the joint. Therefore, there is no need to change the lever fulcrum structure between the case of the heater specification having the heater core and the case of the boost vent specification without the heater core, and the structure can be shared.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a lever fulcrum structure.

FIG. 2 is a schematic view of a vehicle heater device.

FIG. 3 is a perspective view of a heater unit.

FIG. 4 is a side view of a lever fulcrum structure.

FIG. 5 is a side view of a lever fulcrum structure in a state where a temperature control lever is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle heater device 10 Inside / outside air switching lever (mode switching lever) 18 Temperature control lever 20 Air outlet switching lever (mode switching lever) 23 Support point portion 23b First fitting portion 23c Second fitting portion 24 Washer

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60H 1/00 103 G05G 1/00-25/04

Claims (1)

(57) [Claims] A temperature control lever for controlling a temperature of air blown into a vehicle interior; a mode switching lever for switching between an inlet mode and an outlet mode; and a common temperature control lever and the mode switching lever. As a fulcrum, a fulcrum that rotatably supports the temperature adjustment lever and the mode switching lever, and a washer interposed between the temperature adjustment lever and the mode switching lever and fitted to the fulcrum, The fulcrum portion is provided with a first fitting portion to which the temperature control lever and the washer are rotatably fitted, and a smaller diameter than the first fitting portion on the tip side of the fulcrum portion from the first fitting portion. A lever fulcrum structure for a vehicle heater device having a second fitting portion to which the mode switching lever is rotatably fitted.