JPH0717234A - Lever fulcrum structure of heater device for vehicle - Google Patents

Abstract

PURPOSE:To make lever fulcrum structure common between the case of heater specification and the case of boost vent specification. CONSTITUTION:An inside/outside air changeover lever 10, a temperature adjusting lever 18, and a blow port changeover lever 20 rotate around a fulcrum 23, being supported rotatably by the support part 23 provided at the side of a heater case and being manually operated by a crew at the control section inside a car. The fulcrum part 23 has a boss part 23a, which projects from the side face of the heater case, the first engaging part 23b, which is provided on this boss part 23a and in which a temperature adjusting lever 18 and a washer 24 engage with each other, the second engaging part 23c, which is provided on this first engaging part 23b and in which a blow port changeover lever 20, a washer 25, and an inside/outside air changeover lever 10 engage with each other, and it is provided in the shape of steps where the external shape becomes smaller in order as it goes from the boss part 23a through the first engaging part 13b to the second engaging part 23c.

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 heater device for a vehicle, an air mix damper, a mode switching damper or the like is mechanically operated through a link mechanism or a wire by operating a lever provided on an operation panel in a vehicle compartment. There is something to operate. The lever is rotatably provided with a boss provided on the heater case as a fulcrum, and when there are a plurality of levers, the fulcrum of each lever may be assembled by superimposing it on a common boss (actual opening 51- See Japanese Patent No. 66699).

[0003]

However, an air mix damper is not required in a boost vent type vehicle without a heater core. Therefore, if the fulcrum of each lever is mounted on a common boss, and if the temperature control lever for operating the air mix damper is removed from the boss, a gap will be created in the direction in which the levers are stacked. This will affect the movement (rotation) of other levers. Therefore, it is necessary to change the lever fulcrum structure between the heater specification including the heater core and the boost vent specification without the heater core. The present invention has been made based on the above circumstances, and an object thereof is to make a lever fulcrum structure common between a heater specification and a boost vent specification.

[0004]

In order to achieve the above object, the present invention provides a temperature control lever for adjusting the temperature of the air blown into the passenger compartment, and a mode for switching between the inlet mode and the outlet mode. As a fulcrum common to the switching lever, the temperature adjusting lever and the mode switching lever, a fulcrum part that rotatably supports the temperature adjusting lever and the mode switching lever, and between the temperature adjusting lever and the mode switching lever A washer which is interposed and is fitted to the fulcrum portion, wherein the fulcrum portion has a first fitting portion to which the temperature adjusting lever and the washer are rotatably fitted, and the first fitting portion A second fitting portion is provided on the tip side of the fulcrum portion with a diameter smaller than that of the first fitting portion, and the mode switching lever is rotatably fitted to the second fitting portion. It is adopted as the means.

[0005]

In the lever fulcrum structure of the vehicle heater device having the above-described structure, the fulcrum portion is provided with the first fitting portion and the second fitting portion having different outer diameters, and the second fitting to which the mode switching lever is fitted. The joint portion is provided with a diameter smaller than that of the first fitting portion on the tip side of the fulcrum portion with respect to the first fitting portion to which the temperature control lever is fitted. 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 has the first fitting portion. Since it is supported by the step surface between the joining portion and the second fitting portion, the fitting position with respect to the fulcrum portion does not shift to the first fitting portion side even if the temperature adjusting lever is removed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 a lever fulcrum structure. Vehicle heater device 1
As shown in FIG. 2, is composed of a blower unit 2 and a heater unit 3. 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 air inside the vehicle (inside air) and an outside air inlet 9 for introducing 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 either the inside air introduction port 8 or the outside air introduction port 9 is opened or closed based on the operation of the inside / outside air switching lever 10.

The heater unit 3 includes a heater case 12,
It is composed of a heater core 13 and an outlet switching damper 14. The heater case 12 has a defroster outlet 15 that blows air toward the window glass of the vehicle, a face outlet 16 that blows air toward the upper half of the occupant, and a foot outlet 17 that blows air toward the occupant's feet. Has been done. The heater core 13 heats air passing through the heater core 13 by using engine cooling water supplied via a hot water pipe (not shown) as a heat source. The hot water pipe is provided with a flow rate control valve (not shown) that adjusts the amount of hot water supplied to the heater core 13. This flow control valve
The temperature adjustment lever 18 is connected via a wire 19 (see FIG. 3), and the valve opening is adjusted based on the operation of the temperature adjustment 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, The foot outlet 17 is opened and closed.

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

The boss portion 23a is provided for each lever 1 when the control portion 22 operates each lever 10, 18, 20.
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 total thickness 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 the step surface α (see FIG. 1) between the boss portion 23a and the first fitting portion 23b.

The second fitting portion 23c is, as shown in FIG.
The outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 are fitted in order, and the 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 of. The blower outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 fitted to the second fitting portion 23c have a step surface β between the first fitting portion 23b and the second fitting portion 23c (see FIG. 1). ) Is supported by. 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 are, as shown in FIG. The upper end of the fitting portion 23c is covered with the cap 26 and fixed by the screw 27.

The vehicle heater device 1 of this embodiment requires the temperature adjusting lever 18 since it is provided with the heater core 13, but in the case of the boost vent specification without the heater core 13, the temperature adjusting lever 18 becomes unnecessary. . Therefore, the temperature adjusting lever 18 and the washer 24 are attached to the first fitting portion 23.
Assuming the case of removing from b, the outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 are
Since it is supported by the stepped 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 outlet switching lever 20, the washer 25, and the inside / outside air switching lever 10 have the second fitting portion 2 regardless of the presence or absence of the temperature adjusting lever 18 and the washer 24.
Since the state of being fitted to 3c can be maintained (see FIG. 5), there is no effect on the rotation operation of the outlet switching lever 20 and the inside / outside air switching lever 10. As a result, even when the vehicle heater device 1 of the present embodiment has a boost vent specification without the heater core 13, it can be applied without removing the temperature adjustment lever 18 and changing the lever fulcrum structure.

[Modification] In the present embodiment, the second fitting portion 23
The outlet switching lever 2 is provided on the lower side of c (on the side of the first fitting portion 23b).
Although 0 is fitted and the inside / outside air switching lever 10 is fitted to the upper side, the positions of the outlet switching lever 20 and the inside / outside air switching lever 10 may be reversed. In addition, the outlet switching lever 20
Only one of the inside and outside air switching lever 10 may be fitted to the second fitting portion 23c. In this embodiment, an example in which the valve opening of the flow rate adjusting valve is adjusted by the temperature adjusting lever 18 has been shown, but an air mix damper for adjusting the amount of air passing through the heater core 13 is installed,
You may comprise so that the opening degree of this air mix damper may be adjusted. Although the vehicle heater device 1 is used in this embodiment, a cooling unit may be installed 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 heater device for a vehicle of the present invention, the first fitting part and the second fitting part are provided at the fulcrum part, and the first fitting part temperature adjusting lever is fitted to the first fitting part and the second fitting part. Since the mode switching lever is fitted to the second fitting portion provided on the tip side of the first fitting portion and having a diameter smaller than that of the first fitting portion, even if the temperature adjusting lever is removed, the mode switching lever is fitted to the first fitting portion. It does not shift to the joint side. Therefore, there is no need to change the lever fulcrum structure between the heater specification including the heater core and the boost vent specification without the heater core, which can be shared.

[Brief description of drawings]

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

FIG. 2 is a schematic diagram 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 the lever fulcrum structure with the temperature control lever removed.

[Explanation of symbols]

 1 Vehicle Heater Device 10 Inside / Outside Air Switching Lever (Mode Switching Lever) 18 Temperature Control Lever 20 Outlet Port Switching Lever (Mode Switching Lever) 23 Support Point 23b First Fitting Part 23c Second Fitting Part 24 Washer

Claims (1)

[Claims] 1. A temperature control lever for controlling the temperature of air blown into a passenger compartment, a mode switching lever for switching a suction port mode or a blowout port mode, and a common temperature control lever and the mode switching lever. As a fulcrum, a fulcrum portion that rotatably supports the temperature adjustment lever and the mode switching lever, and a washer that is interposed between the temperature adjustment lever and the mode switching lever and is fitted to the fulcrum portion, The fulcrum portion is provided with a first fitting portion to which the temperature adjusting lever and the washer are rotatably fitted, and a diameter smaller than the first fitting portion on a tip side of the fulcrum portion with respect to the first fitting portion. A lever fulcrum structure of a vehicle heater device having a second fitting portion to which the mode switching lever is rotatably fitted.