JP2001199218A - Automobile air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile air conditioner capable of reducing a sound transmitted to a cabin by restraining vibration of a rotary door. SOLUTION: In this automobile air conditioner having a unit case 1 and a rotary door 5 for opening and closing an inside air introducing port 4 formed in this unit case 1 and having the rotary door 5 being an outward opening type door, the unit case 1 is provided with a claw 10 for restraining looseness of the rotary door 5 when opening the rotary door 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a motor vehicle, and more particularly to an air conditioner for a motor vehicle having a door that opens and closes an opening by rotating.

[0002]

2. Description of the Related Art A blower unit connected to an air conditioner unit (not shown) includes a unit case, an outside air inlet for taking in outside air into the unit case, a rotating door for opening and closing the outside air inlet, and an inside air for inside the unit case. And a rotating door that opens and closes the inside air inlet.

[0003] In the unit case, a fan and a motor for driving the fan are housed.

[0004] The inside air inlet communicates with the cabin. Each inlet is opened and closed by a dedicated revolving door. The rotating door of the outside air inlet is mounted inside the unit case, and the rotating door of the inside air inlet is mounted outside the unit case.

The revolving door includes a rectangular flat door body,
And a shaft fixed to one side of the door body. Both ends of the shaft are rotatably supported by the unit case.

[0006] The revolving door is provided with a sealing material (urethane or the like) for preventing air leakage when the revolving door is closed.

A link mechanism for driving the opening and closing door and an actuator are mounted on the outer wall surface of the unit case.

[0008] When the air introduction mode is set to the inside air introduction mode, the actuator is operated, the link mechanism operates to rotate both the rotating doors, the outside air introduction port is closed, and the inside air introduction port is opened. At this time, the rotating door of the inside air inlet rotates to the outside of the unit case.

[0009]

However, when the inside air is introduced, since the door body of the rotating door on the inside air inlet side is not supported at all, various vibrations such as motor vibration, engine vibration, and body vibration are generated. When transmitted to the revolving door, there is a problem that the free end of the revolving door resonates and the sound is transmitted as loud noise into the vehicle interior.

[0010] Since the inside air inlet is an opening for introducing air inside the vehicle cabin, the sound generated by the backlash of the rotating door on the side of the inside air inlet is not affected by other rotating doors (the rotating door on the side of the outside air inlet and the air conditioning unit). Compared to the backlash sound of the mode switching door, it is easy to transmit as loud noise to the passenger compartment.

Further, when the manufacturing error and the assembly error of the unit case and the opening / closing door are large, the noise due to the backlash of the rotating door on the side of the inside air introduction port is further increased.

The present invention has been made in view of such circumstances, and an object thereof is to provide an automotive air conditioner that can suppress vibration of a rotating door and reduce noise transmitted to a vehicle cabin. is there.

[0013]

According to a first aspect of the present invention, there is provided an automotive air conditioner comprising: a case; and a rotating door for opening and closing an opening formed in the case. An air conditioner for a vehicle, wherein the door is a type of door that opens to the outside, further comprising a backlash suppressing member that suppresses backlash of the rotating door when the rotating door is opened.

When the revolving door is opened, the backlash of the revolving door is suppressed by the backlash suppressing member, and the sound due to the backlash is reduced.

According to a second aspect of the present invention, in the automotive air conditioner according to the first aspect, the backlash suppressing member is provided in the case, and the rotating door is opened when the rotating door is opened. Characterized in that it is a claw that engages with the side surface of.

When the revolving door is opened, the claws on the case side are engaged with the side surfaces of the revolving door, so that rattling of the revolving door is suppressed, and noise due to the backlash is reduced.

According to a third aspect of the present invention, in the vehicle air conditioner according to the first aspect, the backlash suppressing member is provided on the revolving door, and the case is provided when the revolving door is opened. Characterized in that it is a claw that engages a part of.

When the revolving door is opened, the pawl on the door engages with a part of the case.
The rattling sound is reduced.

According to a fourth aspect of the present invention, in the vehicle air conditioner according to the first aspect, the backlash suppressing member is provided in the case, and the rotating door is opened when the rotating door is opened. It is characterized by being a cushioning material that absorbs vibration.

When the revolving door is opened, the cushioning material on the case absorbs the vibration of the revolving door, so that the backlash of the revolving door is suppressed, and the noise due to the backlash is reduced.

According to a fifth aspect of the present invention, in the vehicle air conditioner according to the first aspect, the backlash suppressing member is provided on the revolving door, and the revolving door rotates when the revolving door is opened. It is a cushioning material that absorbs vibration of the door.

When the revolving door is opened, the shock absorbing material on the door side absorbs the vibration of the revolving door, so that the backlash of the revolving door is suppressed, and the noise due to the backlash is reduced.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a blower unit of an automotive air conditioner according to a first embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of the blower unit, and FIG. 3 is a rotary door held by claws. FIG. 3 is a diagram for explaining the process, and FIG.
FIG. 3B shows a state before the revolving door is held, and FIG.
FIG. 7 is a view showing a state after the revolving door is held.

The blower unit includes a unit case (case) 1, an outside air inlet 2 for taking in outside air into the unit case 1, a rotating door 3 for opening and closing the outside air inlet 2, and an inside air inside the unit case 1. It comprises an inside air inlet (opening) 4 to be taken in, and a rotating door 5 for opening and closing the inside air inlet 4.

The unit case 1 contains a fan (not shown) and a motor (not shown) for driving the fan.

Outside and inside air inlets 2 and 4 are formed in the upper portion 1a of the unit case 1. The inside air inlet 4 communicates with the passenger compartment. The outside air inlet 2 is provided by a revolving door 3
The inside air inlet 4 is opened and closed by a rotating door 5, respectively.

The revolving door 5 includes a rectangular flat door body 6.
And a shaft 7 fixed to one side of the door body 6. Both ends of the shaft 7 are rotatably supported by the unit case 1. The revolving door 3 is mounted inside the unit case 1, and the revolving door 5 is mounted outside the unit case 1. On one surface 5c of the revolving door 5, a sealing material (made of urethane) 8 for preventing air leakage when the revolving doors 3, 5 are closed is provided.

The unit case 1 is integrally formed with a wall 9 which faces the back surface 5b of the revolving door 5 when the revolving door 5 is opened. On the side surface 9a of the wall 9, a claw (playback suppressing member) 10 is integrally formed so as to protrude toward the revolving door 5 side. The claw 10 has a curved guide portion 12 and a holding recess 11 as shown in FIG.

An opening (not shown) for blowing air is formed in the lower portion 1b of the unit case 1.

A link mechanism 14 and an actuator 15 are mounted on the outer wall surface 1c of the unit case 1. The actuator 15 is connected to the link mechanism 14.

Next, the operation of the blower unit when the inside air introduction mode is set will be described.

When the actuator 15 is operated, the link mechanism 14 operates to rotate the rotary door 3 into the unit case 1 to close the outside air inlet 2 and to rotate the rotary door 5.
Is rotated to the outside of the unit case 1 to open the inside air inlet 4.

At this time, the side surface 5a of the revolving door 5 rides on the curved guide portion 12 of the claw 10, and the curved guide portion 12 bends outward (see FIG. 3A).

Thereafter, the revolving door 5 further rotates, and the side surface 5 a of the revolving door 5 is engaged with the holding recess 11 of the claw 10. As a result, the side surface 5a of the rotating door 5 is held by the claw 10 (see FIG. 3B).

Therefore, even if vibration is transmitted from the vibration source to the revolving door 5, rattling of the revolving door 5 is suppressed.

When the motor operates, the fan rotates, and air flows into the unit case 1 from the vehicle interior through the inside air inlet 4. This air is sent out from an air outlet of the unit case 1 to an air conditioner unit (not shown).

According to this embodiment, when the revolving door 5 is opened, the pawl 10 on the unit case 1 engages with the side surface 5a of the revolving door 5, so that the backlash of the revolving door 5 is suppressed.
The rattling noise is reduced, and the noise transmitted to the vehicle interior can be reduced.

Further, since the claw 10 is formed integrally with the unit case 1, there is no need to make the claw portion a separate component, and the cost of components can be reduced.

As a modification of this embodiment, a claw 10 for suppressing rattling of the revolving door 5 is formed integrally with the side face 5a of the revolving door 5, and when the revolving door 5 is opened, the claw 10 is formed.
May engage with the side surface 9 a of the wall 9.

In this embodiment, the case where the claw 10 is formed on the side surface 9a of the wall 9 or the side surface 5a of the revolving door 5 has been described. However, the position of the claw 10 is not limited to the side surfaces 9a, 5a. It may be a side surface (not shown) opposite to 5a, a front end surface 9b of the wall 9, or a front end surface 5d of the revolving door 5.

FIG. 4 is a perspective view showing a blower unit of a vehicle air conditioner according to another embodiment, and FIG. 5 is a partially enlarged sectional view of a blower unit of the vehicle air conditioner according to a second embodiment of the present invention. is there. 1 are denoted by the same reference numerals, and description thereof is omitted.

In the embodiment shown in FIG. 1, a claw 10 for holding the side surface 5a of the rotating door 5 on the side surface 9a of the wall 9 as a backlash suppressing member.
In the present embodiment, the cushioning member (playback suppressing member) 100 is provided on the wall 9 facing the back surface 5b of the revolving door 5.

As shown in FIG. 5, when the revolving door 5 is opened, the back surface 5b of the revolving door 5 is supported by the cushioning material 100. Therefore, even if vibration is transmitted from the vibration source to the revolving door 5,
The shock absorbing material 100 absorbs the vibration, and the rattling of the rotating door 5 is suppressed.

According to this embodiment, when the revolving door 5 is opened, the pawl 10 on the unit case 1 side is supported by the back surface 5b of the revolving door 5, so that the revolving door 5 is prevented from rattling, and Sound transmitted to the body can be reduced.

As a modification of this embodiment, a cushioning material 100 for absorbing the vibration of the revolving door 5 is provided on the back surface 5b of the inside air door 5, and the revolving door 5 is held on the wall 9 when the revolving door 5 is opened. You may make it.

In each of the above embodiments, the inside air inlet 4
The case where the rattling suppressing member such as the claw 10 and the cushioning material 100 is applied to the revolving door 5 has been described, but the member is not limited to the claw 10 and the cushioning material 100 as long as the member suppresses the rattling.
Further, in these embodiments, one play suppression member is used, but a plurality of play suppression members may be used.

Further, in each of the above embodiments, the inside air inlet 4
Although the backlash suppressing member is applied to the rotating door 5 described above, the rotating door 5 may be applied to the rotating door 3 of the outside air inlet 2 or the inside / outside air switching door.

Also, in these embodiments, the case where the present invention is applied to a blower unit has been described. However, the present invention is not limited to the blower unit as long as the revolving door 5 opens to the outside of the unit case 1. The present invention can also be applied.

[0050]

According to the automotive air conditioner of the present invention,
The play of the revolving door is suppressed, and the sound transmitted to the cabin can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a blower unit of an automotive air conditioner according to one embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of a blower unit.

FIG. 3 is a diagram for explaining a process in which a revolving door is held by a pawl.

FIG. 4 is a perspective view showing a blower unit of an automotive air conditioner according to another embodiment.

FIG. 5 is a partially enlarged sectional view of a blower unit of an automotive air conditioner according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit case (case) 4 Inside air inlet (opening) 5 Revolving door 5a Side surface 10 Claw (playback suppressing member) 100 Buffer material (playback suppressing member)

Claims (5)

[Claims] 1. An automotive air conditioner, comprising: a case; and a revolving door that opens and closes an opening formed in the case, wherein the revolving door is of a type that opens outward. An air conditioner for an automobile, further comprising a play suppressing member for suppressing play of the rotating door. 2. The air conditioner for an automobile according to claim 1, wherein the backlash suppressing member is a claw provided on the case and engaged with a side surface of the revolving door when the revolving door is opened. apparatus. 3. The vehicle according to claim 1, wherein the backlash suppressing member is a claw provided on the revolving door and engaging with a part of the case when the revolving door is opened. Air conditioner. 4. The air conditioner for an automobile according to claim 1, wherein the backlash suppressing member is a cushioning member provided on the case and absorbing vibration of the rotating door when the rotating door is opened. apparatus. 5. The vehicle according to claim 1, wherein the backlash suppressing member is provided on the revolving door, and is a cushioning material that absorbs vibration of the revolving door when the revolving door is opened. Air conditioner.