JPS6236642Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a geared lever used in a link mechanism for controlling a door for opening and closing a vent duct, a foot duct, etc. for blowing temperature-controlled air into a vehicle interior in an automobile air conditioner.

Automotive air conditioners are vent ducts that blow air toward the upper body of passengers inside the vehicle.
It has a foot for blowing air towards the feet of tower passengers and a differential duct for blowing air towards the inner surface of the windshield. The duct is equipped with a door for opening/closing control.

FIG. 1 is a diagram showing an example of a heater unit of an air conditioner for an automobile.A case 1 of the heater unit is provided with a vent duct 2, a foot duct 3, and a differential duct 4, and the vent duct 2 is opened and closed. For this purpose, first and second vent doors 5 and 6 are attached, a differential door 7 is attached for opening and closing the differential duct 4, and a floor door 8 is attached for opening and closing the foot duct 3.

By controlling the opening and closing of these doors, the modes for blowing air into the vehicle interior can be set to the vent mode shown in FIG. 1A, the bilevel mode shown in FIG. 1B, the foot mode shown in FIG. niD
A heat mode shown in FIG. 1 and a differential mode shown in FIG. 1E are obtained.

The vent mode is a mode used when ventilating or cooling the vehicle interior, and all temperature-controlled air is blown out from the vent duct 2. The bilevel mode is a mode for cold head and warm feet, in which warm air is blown out from the foot duct 3 and cold air is blown out from the vent duct 2. The foot mode is a mode for blowing out warm air from the foot duct 3 when heating the vehicle interior. The heater mode is a so-called demist warm air mode in which warm air is blown from the foot duct 3 toward the feet of the passenger and warm air is also drawn from the differential duct 4, and is mainly used in winter when the humidity is high. The differential mode is a mode used to prevent fogging on the inner surface of the windshield. These mode settings are made by a mode switching lever attached to an instrument panel (not shown).

The link mechanism for opening and closing the door in the various modes described above is shown in FIG.
A cable 9 connected to a mode switching lever (not shown) is connected to the case 1 of the heater unit.
Main link 1 pivoted by an axis 10
1 is installed. In order to transmit the rotational movement of the main link 11 to the opening/closing operation of the differential door 7, an auxiliary link 14 having a cam groove 13 with which a pin 12 fixed to the main link 11 engages is rotated about this by a shaft 15. A door link 16 which is freely attached to the case 1 and integrated with the differential door 7 and an auxiliary link 14 are connected by a rod 17.

Further, in order to transmit the rotational movement of the main link 11 to the opening/closing operation of the first and second vent doors 5 and 6, an auxiliary link has a cam groove 19 that is engaged with a pin 18 fixed to the main link 11. 20 is attached to the case 1 via a shaft 21 so as to be rotatable around the shaft, and a door link 22 integrated with the first vent door 5 and a door link 23 integrated with the second vent door 6 are connected by a rod 24. The central portion of this rod 24 engages with the auxiliary link 20. In order to transmit the rotational movement of the main link 11 to the opening/closing operation of the floor door 8, the main link 11
A geared lever 28 having a pin 26 that engages with a cam groove 25 formed in the cam groove 25 and a gear 27 is attached to the case 1 by a shaft 29 so as to be rotatable about this, and is integrally connected to the floor door 8. A pinion 31 that meshes with the gear 27 is attached to the broken door shaft 30.

As mentioned above, a pinion is attached to the door of an automobile air conditioner, and the opening and closing of the door is controlled by rotating the geared lever 28 formed with the gear 27 that meshes with the pinion. In the case of the link mechanism of the harmonizer, once the link mechanism is assembled, the geared lever 28
It is not easy to correct the position. In other words, the sealing material S is attached to the floor door 8 in order to seal it, but in the vent mode and the differential mode, the floor door 8 needs to completely close the foot duct 3, and at this time, the sealing material S is attached to the foot duct 3. 9 opening must be completely closed. Therefore, when the main link 11 is rotated to these modes, if the floor door 8 is not in a position that completely closes the foot duct 11, it is necessary to change the attitude of the geared lever 28. However, in order to change the attitude of the geared lever 28, other parts such as the main link 11 must also be removed, which is quite difficult to adjust.

Therefore, the purpose of this invention is to enable the position of the geared lever to be easily adjusted after assembling the link mechanism in a link mechanism having a geared lever in order to open and close various doors in an automobile air conditioner. In the link mechanism that controls the opening and closing of the door attached to the heater unit of the automobile air conditioner, in order to open and close the outlet duct that distributes temperature-controlled air etc. into the vehicle interior, the link mechanism is attached to the shaft that supports the door. a first lever having a gear that engages with a pinion; and a second lever that engages with a main link that is rotatably attached to the case of the heater unit; and a second lever that is rotatably attached to the case. , the first lever and the second lever.
This is a structure of a geared lever that includes a fixing means for fixing the lever and the lever to each other.

Next, an embodiment of the present invention will be described with reference to FIGS. 3 and 4. Note that FIGS. 3 and 4 only show the geared lever, and the structure of the main link etc. that interlocks with this lever is the same as that of the conventional example shown in FIG. 2, and is not shown.

The geared lever 32 of the present invention includes a first lever 32a having a gear 33 that meshes with a pinion 31 shown in FIG.
a second lever 32b having a pin 34 that engages with 5;
The levers 32a and 32b are configured to rotate around a bolt 35 as a central axis.

The second lever 32b is rotatable relative to the first lever 32a. Second lever 32
After determining the mutual positions of b and the first lever 32a,
As fixing means for fixing the levers 32a and 32b to each other, the first lever 32a and the second lever 32b are provided with concave and convex portions 37 that engage with each other.

Therefore, as shown by the solid line in FIG. 3, it is assumed that the geared lever 32 is attached to the case 1 in terms of the positional relationship between the first lever 32a and the second lever 32b, and the floor door 8 in this state is connected to the foot duct. 3, the relative positions of the first lever 32a and the second lever 32b are adjusted to the state shown by the imaginary line in FIG. 3. This changes the position of the pin 34 and the gear that engage the main link 11, resulting in a reliable door seal. This state is fixed by the engagement of the concavo-convex portions 37.

5 and 6 are views showing other embodiments of the present invention, in which a screw 38 is screwed to the first lever 32a.
A long hole 39 through which the second lever 32b passes is formed in the second lever 32b, thereby forming a fixing means,
The other structure is the same as that of the previous embodiment. FIG. 7 is a diagram showing still another embodiment of the present invention, in which the first lever 32a and the first lever 32b are connected to the second lever 3.
2b and engages the pawl 40 with the first lever 32a, so that they are integrated with each other. In this case, the first lever 32a and the second lever 32b can be coupled with one touch.

As described above, according to the present invention, the door is supported in the link mechanism that controls the opening and closing of the door attached to the heater unit of the automobile air conditioner in order to open and close the outlet duct that distributes vehicle room temperature conditioned air, etc. A first lever having a gear that engages with a pinion attached to a shaft of the heater unit, and a second lever that engages with a main link rotatably attached to the case of the heater unit are rotatably attached to the case. Since the first lever and the second lever are provided with a fixing means for fixing them to each other, even after the link mechanism for controlling the opening and closing of the door is assembled.
The meshing position between the geared lever and pinion can be changed. This means that the door position relative to the main link position can be changed to the correct door position relative to the main link position, so that if the door seal is defective it can be easily adjusted.

[Brief explanation of the drawing]

Fig. 1A-E are cross-sectional views showing a heater unit of an automotive air conditioner, Fig. 2 is a front view showing a conventional link mechanism, Fig. 3 is a front view showing a geared lever according to one embodiment of the present invention, Fig. 4 is a cross-sectional view of Fig. 3, Fig. 5 is a front view showing another embodiment of the present invention, Fig. 6 is a cross-sectional view of Fig. 5, and Fig. 7 is a cross-sectional view showing yet another embodiment of the present invention. 8...Floor door, 11...Main link, 25...
...cam groove, 30...door shaft, 31...pinion,
32: geared lever, 32a: first lever, 32b: second lever, 33: gear, 34
...pin, 35...volts.

Claims (1)

[Scope of utility model registration request] A pinion attached to the shaft that supports the door in a link mechanism that controls the opening and closing of the door attached to the heater unit of an automotive air conditioner to open and close the outlet duct that distributes temperature-controlled air, etc. inside the vehicle. A first lever having a gear that meshes with the heater unit, and a second lever that engages with a main link that is rotatably attached to the case of the heater unit are mutually rotatably attached to the case, and the first lever and the second lever are rotatably attached to the case. A structure of a geared lever comprising fixing means for fixing the second lever to each other.