JPH1058949A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the dew or the like attached to an inner face of a windshield in the abnormality of an operating system, and assure the safety driving of an automobile, by installing an emergency operating means for forcibly rotating a rotary damper to make a defrost blowing mode, when the abnormality is generated in the operating system of the rotary damper. SOLUTION: A gear link 34 is rotated on a shaft 35 in a clockwise direction, when a wire 40 is towed, and a gear 32, the axes of rotation 15a, 15b, and a rotary damper 10 are rotated against the elastic force of a spring 30 in accompany with the rotation of the gear link, thereby a blowing mode is switched. On this occasion, the gear link 34 is towed through a link presser 36, and is drawn out from the shaft 35 simultaneously with the disengagement with the gear 32, when an energency lever 39 is rotated, when the abnormality is generated in an operating system of the rotary damper 10. Then the rotary damper 10 is rotated in the clockwise direction, and is stopped at a position of the defrost blowing mode. Thereby the rotary damper 10 is positioned at the defrost blowing mode, and the clouding of the windshield can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner suitable for a passenger car.

[0002]

2. Description of the Related Art The present applicant has filed a patent application for a vehicle air conditioner shown in FIGS. 2 to 4 with Japanese Patent Application No. 7-310726. FIG. 2 is a sectional view taken along line AA in FIG.
FIG. 3 is a sectional view taken along the line BB of FIG. 2, and FIG. 4 is a perspective view of a rotary damper for switching the blowing mode.

An evaporator 4, an air mix damper 6, a heater 5, and a blow-out mode switching rotary damper 10 are provided inside a casing 1 embedded in the center console. The evaporator 4 is attached to the lower portion of the casing 1 in an inclined position so as to gradually rise toward the air inlet 25.

The air mix damper 6 is guided by a guide 26 above the evaporator 4 and is slidably installed horizontally. The heater 5 is disposed above the air mix damper 6 so as to be deviated to one side in the casing 1 and slightly inclined. The blowout mode switching rotary damper 10 is disposed in the air mix area above the heater 5 so as to be rotatable around a horizontal axis.

As shown in FIG. 4, the rotary damper 10 has a hollow barrel shape as a whole, and its cylindrical portion 10a is provided at predetermined intervals in the circumferential direction at a defrost outlet 12, a face outlet 13, and an air mix. An inlet 11 communicating with the damper area is formed, and fan-shaped foot outlets 14 are formed in both end plates 10b and 10c, respectively, and a rotary shaft 15 is protrudingly provided at a central portion thereof. The rotating shaft 15 is supported on the left and right side walls 1b and 1c of the casing 1.

[0006] A projection 16 formed on the casing 1 is provided.
a, 16b, and 16c constitute a seal portion by approaching the outer peripheral surface of the cylindrical portion 10a at a predetermined interval in the circumferential direction. The upper surface 1a of the casing 1 has a protrusion 16a.
16b, the face outlet 2 is formed between the protrusions 16b and 16c, and the defrost outlet 3 is formed between the protrusions 16b and 16c.
1c has a foot outlet that can be matched with the foot outlet 14
19 are formed.

The face duct 21 is connected to the face outlet 2, the defrost duct 22 is connected to the defrost outlet 3, and the foot duct 23 is connected to the foot outlet 19. .

During the operation of the air conditioner, the air inside the vehicle or the outside air urged by a blower (not shown) flows into the casing 1 from the air suction port 25 and flows through the evaporator 4 and the refrigerant and the refrigerant. Cooled by heat exchange.

This air is diverted by the air mix damper 6, and the air that has flowed through the heater passage 28 formed on one side of the air mix damper 6 enters the heater 5 where it exchanges heat with engine cooling water for heating. After that, the air flowing through the bypass passage 27 formed on the other side of the air mix damper 6 is mixed and mixed in the air mix area to become conditioned air of a predetermined temperature.

This conditioned air is supplied to the rotary damper 10 at the inlet.
11 to enter the inside, and rotate the rotary damper 10
Outlet 2, selected by rotating around 15,
It is blown out from any one or two of 3,19.

That is, when the rotary damper 10 occupies the rotational angular position shown in FIG. 2, the conditioned air passes through the face outlet 13, the face outlet 2, and the face duct 21 toward the upper body of the passenger in the vehicle compartment. Be blown out.

When the rotary damper 10 is slightly rotated counterclockwise in FIG. 2, the face outlet 13 is partially closed and the foot outlet 14 is partially aligned with the foot outlet 19, so that the conditioned air Part is blown out from face outlet 2 and the rest is foot outlet 14, foot outlet
19. The air is blown out through the foot duct 23 toward the feet of the occupant in the vehicle.

When the rotary damper 10 is further rotated in the counterclockwise direction, the communication between the face outlet 13 and the face outlet 2 is cut off, and only the foot outlet 14 is aligned with the foot outlet 19, so that the conditioned air is blown out. It is blown out only from exit 19.

When the rotary damper 10 is further rotated, the foot outlet 14 and the foot outlet 19 partially align with each other, and at the same time, the defrost outlet 12 partially communicates with the defrost outlet 3, so that a part of the conditioned air is removed. At the same time as the air is blown out from the foot air outlet 19, the remainder is blown out toward the inner surface of the windshield or the like through the defrost outlet 12, the defrost air outlet 3, and the defrost duct 22.

When the rotary damper 10 is further rotated, the alignment between the foot outlet 14 and the foot outlet 19 is cut off, and only the defrost outlet 12 is aligned with the defrost outlet 3.
The conditioned air is blown out only from the defrost outlet 3.

[0016]

During operation of the above-mentioned conventional apparatus, if an abnormality occurs in the operation system of the rotary damper 10 for switching the blow-out mode and the rotary damper 10 cannot be switched to the defrost blow-off mode, then the Dew and frost adhering to the inner surface of the glass cannot be removed, and there has been a problem that safe driving of an automobile is hindered in extremely cold weather.

[0017]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its gist is to form a casing having a plurality of outlets including a defrost outlet. An evaporator that cools the air in the air flow path, a heater that reheats the air cooled by the evaporator, an air mix damper that adjusts the amount of cool air passing through the heater, and selectively switching the air outlet. In a vehicle air conditioner having a blowout mode switching rotary damper, when an abnormality occurs in an operation system of the rotary damper, emergency operation means for forcibly rotating the rotary damper to set a defrost blowing mode. The air conditioner for vehicles is characterized by having provided.

Another feature is that an operation system of the rotary damper is constituted by a gear wedge-fitted to a rotary shaft of the rotary damper and a gear link meshing with the gear, and the rotary damper is moved to a defrost blowing mode position. And an emergency lever for disengaging the gear link and the gear when an abnormality occurs in the operation system of the rotary damper.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIG. 1, wherein (A) is a cross-sectional view and (B) is a view taken along the arrow B of (A). One rotation shaft of the rotary damper 10 for switching the blowing mode
A spring 30 is attached between the housing 15a and the left side wall 1b of the casing 1 to urge the rotary damper 10 in the defrost blowing mode, that is, in the counterclockwise direction in FIG. 1B. A gear 32 is wedge-fitted to the other rotary shaft 15b and is prevented from being pulled out by a bolt 33.

A gear link 34 that meshes with the gear 32 is a shaft 35
The casing 1 is rotatably supported by the right side wall 1c of the casing 1. One end of a wire 40 is locked to a pin 41 protruding from the gear link 34.

A link holder 36 attached to the gear link 34 is connected to a tip of an emergency lever 39. The emergency lever 39 is connected to a tip of a stay 37 projecting from the right side wall 1c of the casing 1 at an intermediate portion thereof. Are supported so as to be rotatable around a shaft 38. The other configuration is the same as that of the conventional one shown in FIGS. 2 to 4, and the corresponding members are denoted by the same reference numerals and description thereof will be omitted.

In normal operation, the wire 40 is connected as shown in FIG.
The gear link 34 rotates clockwise around the shaft 35 by being pulled in the direction of the arrow shown in FIG.
When the rotary shafts 15a, 15b and the rotary damper 10 rotate against the resilience of the spring 30, the blow mode is a defrost blow mode, a defrost and foot blow mode, a foot blow mode, a foot and face blow mode, and a face blow mode. Are switched in this order.

When the wire 40 is loosened, the rotary damper 10 rotates in the clockwise direction in the opposite direction, whereby the blowing mode is sequentially switched in the opposite direction.

When an abnormality occurs in the operation system of the rotary damper 10, when the emergency lever 39 is turned around the axis 38 in the direction of the arrow, the gear link 34 is pulled rightward through the link retainer 36, and the gear 32 Is disengaged from the shaft 35 at the same time. Then, the rotary damper 10 is urged by the elastic force of the spring 30, rotates clockwise, reaches the defrost blowing mode position, and stops.

Thus, when an abnormality occurs in the operation system of the rotary damper 10, if the emergency lever 39 is operated, the rotary damper is automatically set to the defrost blowing mode position, so that fogging of the windshield can be prevented.

In the above embodiment, the gear link 34 is removed from the operation system by operating the emergency lever 39. However, the gear 32 can be removed, and the operation system includes a plurality of levers, links, wires, etc. In the case where one or more of them are used, one or more of them may be removed from the operation system.

[0027]

According to the present invention, when an abnormality occurs in the operation system of the rotary damper, the rotary damper is forcibly rotated by the emergency operation means to be in the defrost blowing mode. Adhesion can be prevented, thus contributing to safe driving of the vehicle.

A rotary wedge for rotating the rotary damper to a defrost blowing mode position is constituted by a gear wedge-fitted to a rotary shaft of the rotary damper, a gear link meshing with the gear, and the like. If the emergency operating means is constituted by the means and an emergency lever for disengaging the gear link and the gear when an abnormality occurs in the operation system of the rotary damper, the structure is simple, inexpensive, and reliable and durable. It is possible to obtain an emergency operating means with a high degree of sex.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, wherein (A) is a cross-sectional view and (B)
(A) is an arrow view along arrow B of (A).

FIG. 2 shows a conventional vehicle air conditioner AA of FIG.
It is sectional drawing which follows a line.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a perspective view of a rotary damper for switching a blowing mode of a conventional vehicle air conditioner.

[Explanation of symbols]

 Reference Signs List 1 casing 2 face outlet 3 defrost outlet 4 evaporator 5 heater 6 air mix damper 10 rotary dampers 15a and 15b rotating shaft 32 gear 34 gear link 30 rotation urging means 39 emergency lever

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tomoki Izawa 3-chome, Asahicho, Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside the Mitsubishi Heavy Industries Air Conditioning Works

Claims (2)

[Claims] An evaporator for cooling air in an air flow passage formed in a casing having a plurality of air outlets including a defrost air outlet, a heater for reheating air cooled by the evaporator, In an air conditioner for a vehicle comprising an air mix damper for adjusting an amount of cold air passing through a heater and a rotary damper for switching an outlet mode for selectively switching the outlet, an abnormality occurs in an operation system of the rotary damper. An air conditioner for a vehicle, further comprising an emergency operating means for forcibly rotating the rotary damper to set a defrost blowing mode. 2. An operation system for the rotary damper, comprising a gear wedge-fitted to a rotary shaft of the rotary damper and a gear link meshing with the gear, and a rotation for urging the rotary damper to a defrost blowing mode position. 2. The air for a vehicle according to claim 1, wherein said urgent operating means comprises urging means and an emergency lever for disengaging the gear link and the gear when an abnormality occurs in the operation system of the rotary damper. Harmony equipment.