JP2001158219A - Air duct changeover device and automobile air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a mounting process of a film member on a door board, to facilitate disassembling of the film member from the door board, and reduce a manufacturing cost and a recycle cost, in an air-passage changeover device using a film-type slide door. SOLUTION: A mounting hole 29c and a slit 29d are formed in mounting surface 29b at both ends of a film member 29, a pin portion 28c and a locking portion 28d are disposed at a position corresponding to the mounting hole 29c on the door board 28, and length L1 of the slit 29d is set to a length through which the locking portion 28d can pass when the film member 29 is attached or detached. The locking portion 28d is passed through the slit 29d to assemble and disassemble the door board 28 from the film member 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air passage switching device for switching an air passage by a film type sliding door,
And a vehicle air conditioner using the same.

[0002]

2. Description of the Related Art In a conventional apparatus of this kind, a slide door is constructed by assembling a flexible film member on a substantially flat door substrate and sliding the slide door along a peripheral sealing surface of an air passage of a case. By moving the air passage, the sealing surface of the film member opens and closes the air passage to switch the air passage.

[0003] Assembling of the film member to the door substrate is performed as follows. First, by inserting the pin portion integrally formed on the side surface of the door substrate into the mounting holes formed at both ends of the film member, and then heat-staking the tip of the pin portion to form a retaining portion, The door substrate and the film member are integrated.

[0004]

However, in the above-mentioned conventional apparatus, assembling the door substrate and the film member requires two steps of the step of inserting the pin portion and the step of heat caulking the tip of the pin portion as described above. In addition, equipment for heat staking is also required, which contributes to an increase in manufacturing costs.

[0005] Further, since the door substrate and the film member are generally made of different materials, it is necessary to disassemble them for recycling. However, since the door substrate and the film member are integrated by a retaining portion formed by heat caulking, the film member is cut with a cutter or the like, or the film member is torn to disassemble the door substrate and the film member. Like that. As described above, since it is not easy to disassemble the door substrate and the film member, there is a problem that the recycling cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in an air passage switching device using a film type sliding door, the process of assembling a door substrate and a film member is simplified. It is an object of the present invention to facilitate the disassembly and reduce the production cost and the recycling cost.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, the air passages (22, 22) slide in a direction substantially perpendicular to the air flow direction (A). 2
3) a sliding door (27) that opens and closes the sliding door (27).
3) Flexible film member for closing (29)
And a door substrate (2) on which a film member (29) is mounted.
8), the film member (29) includes a film sealing surface (29a) for closing the air passages (22, 23) and the film sealing surface (2).
9a) has a mounting surface (29b) bent in the air flow direction (A) at both ends, and the mounting surface (29b) has a mounting hole (29c) long in the air flow direction (A); Hole (29
c), a slit (29d) extending in a direction substantially perpendicular to the air flow direction (A) is formed, and the door substrate (2) is formed at a position corresponding to the mounting hole (29c) in the door substrate (28).
8) The pin (28c) formed integrally with the mounting hole (29c) and inserted into the mounting hole (29c), and the film member (29) formed integrally with the tip of the pin (28c) comes off from the pin (28c). And a retaining portion (28d) for preventing
The length (L1) of the slit (29d) is set to a length that allows the retaining portion (28d) to pass when the film member (29) is detached.

Thus, the door substrate and the film member can be assembled by passing the retaining portion through the slit, so that the pin portion and the retaining portion can be integrally formed on the door substrate in advance. Therefore, a heat caulking step is not required, and the assembling step of the door substrate and the film member can be simplified, and the manufacturing cost can be reduced. In addition, since equipment for heat staking is not required, the manufacturing cost can be further reduced.

Further, the invention is suitable for an air passage switching device in which the door substrate (28) and the film member (29) are made of different materials. That is, in this case,
For recycling, it is necessary to disassemble the door substrate and the film member, but since both can be disassembled by passing the retaining portion through the slit, they can be easily disassembled and the recycling cost is reduced. be able to.

According to the third aspect of the present invention, the angle (θ1) formed between the film sealing surface (29a) and the mounting surface (29b).
Is set to 90 degrees or less.

When a large amount of air passes through the slit, a passing sound is generated due to a so-called whistle phenomenon. According to the invention described in claim 3, the angle θ1 between the film sealing surface and the mounting surface is 90 degrees. By doing the following, the gap S1 (see FIG. 4) between the free end of the mounting surface and the main body of the door substrate is reduced, so that the air flowing from the gap S1 and passing through the slit is reduced, and Generation of sound can be prevented.

Also, when the angle θ1 between the film sealing surface and the mounting surface is 90 degrees or less, there is an advantage that the film member is less likely to come off the pin portion than when θ1> 90 degrees. That is, to remove the film member from the pin,
The mounting surface of the film member must be bent by the angle θ2 shown in FIG. 4, and the angle θ2 increases as the angle θ1 decreases, so that the film member does not easily come off the pin portion.
Therefore, it is possible to prevent the film member from falling off during the air conditioning operation.

According to the fourth aspect of the present invention, the pin portion (28
When c) is moved most toward the film sealing surface (29a) in the mounting hole (29c), the retaining portion (28)
The center line (D) in the direction perpendicular to the air flow direction (A) in d) is located closer to the film sealing surface (29a) than the slit (29d).

According to this, on the free end side of the mounting surface with respect to the slit, an overlapping portion E between the mounting surface and the retaining portion (FIG. 8)
), The overlapping portion E can be easily deformed. Accordingly, a part of the outer edge of the retaining portion can easily enter the slit, and the disassembly of the door substrate and the film member becomes extremely easy.

According to the invention described in claim 5, the door substrate (2)
8) An air passage switching device in which an elastic member (30) is arranged between the film sealing surface (29a) and the film sealing surface (29a) by the elastic member (30). When pressed on 23a), the slit (29d) has a film sealing surface on the center line (D) in the direction perpendicular to the air flow direction (A) or on the center line (D) in the retaining portion (28d). (29a) side.

According to this, when the slide door is assembled to the case, an overlapping portion F between the mounting surface and the retaining portion is located on the free end side of the mounting surface beyond the slit (see FIG. 9).
, The overlapping portion F is less likely to be deformed. Therefore, it is difficult for the film member to come off from the pin portion, and it is possible to prevent the film member from falling off during the air conditioning operation.

According to the sixth aspect of the present invention, the slit (2
A round hole (29f) is provided at the end of 9d). Thereby, the tear strength of both ends of the slit can be improved.

Further, as described in claim 7, the present invention is suitably used as an air passage switching device for opening and closing a plurality of air passages (22, 23) of air blown into a vehicle cabin in a vehicle air conditioner. Can be implemented.

Further, as set forth in claim 8, the present invention provides a heating heat exchanger (18) in a vehicle air conditioner.
Passing through the passage (50) and the heat exchanger for heating (1)
8) It can be suitably implemented as an air passage switching device for adjusting an air flow ratio with respect to the cool air passing through the cool air bypass passage (51).

Note that the reference numerals in parentheses of the above means indicate the correspondence with specific means described in the embodiment described later.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1 to 9 show a first embodiment of the present invention.
1 shows an embodiment, and a vehicle air conditioner according to the present embodiment relates to a rear seat air conditioner that air-conditions a rear seat side space of a one-box vehicle having a large cabin.

First, in FIG. 1, reference numeral 10 denotes an air conditioner for a rear-seat vehicle, and a main body of the air conditioner 10 is installed between a vehicle outer wall and a vehicle inner wall at a position near a floor surface at a rear portion of the vehicle. The vehicle air conditioner 10 includes a blower unit 11 and an air conditioner unit 12 that are roughly arranged in the vehicle longitudinal direction.

The blower unit 11 is for sucking the inside air at the rear of the passenger compartment into the air conditioner 10, and in this embodiment, the vehicle air conditioner sucks only the inside air. The blower unit 11 has inside air suction ports (not shown) formed on both sides in the vehicle width direction (the front and back directions in FIG. 1). The blower unit 11 includes a centrifugal electric blower 13. The blower 13 has a centrifugal fan 14 and a fan drive motor 14a, and the centrifugal fan 14 is disposed in a scroll casing 15.

On the downstream side of the scroll casing 15 of the blower unit 11 is formed a duct portion 16 which forms a flow path extending in the vehicle front-rear direction. This duct part 1
The evaporator 17 changes the flow of the air blown from the blower unit 11 upward from below.
It is for introducing to. The outlet of the blower unit 11 is connected to the inlet of the air conditioner unit 12 by the duct 16.

The air-conditioning unit 12 is
1 and a resin case 12
The flow path is formed so as to extend upward from below by a. An evaporator 17 serving as a heat exchanger for cooling conditioned air and a heater core (heat exchanger for heating) located downstream of the air are provided in a case 12a of the air conditioner unit 12.
18 are provided. The evaporator 17 and the heater core 18 are arranged in the air conditioner unit 12 so as to be laminated in the vehicle up-down direction such that the ventilation surface is substantially horizontal.

Therefore, the air blown from the blower 13 flows from the front to the rear of the vehicle through the duct 16 and is then introduced into the case 12a of the air conditioner unit 12. The flow of the blown air introduced into the case 12a changes from the lower side to the upper side, and the evaporator 17 and the heater core 18
Pass through.

The evaporator 17 includes a compressor (not shown)
A well-known refrigeration cycle is connected to the condenser, the liquid receiver, and the pressure reducer by piping, and cools and dehumidifies the air in the case 12a. The heater core 18 is a heating heat exchanger that uses hot water (cooling water) from an automobile engine as a heat source, and heats the cool air cooled by the evaporator 17.

In the present embodiment, a hot water valve 19 for adjusting the amount of hot water to the heater core 18 is provided in the hot water circuit of the heater core 18.
The temperature of the air blown into the vehicle cabin is adjusted by adjusting the amount of hot water supplied to the vehicle.

The case 12 of the air conditioner unit 12
A cool air bypass passage 20 in which air (cool air) passing through the evaporator 17 flows by bypassing the heater core 18 is provided in a. This cold air bypass passage 20
It is opened and closed by the cool air bypass door 21.

As shown in FIGS. 1 and 2, in the case 12a of the air conditioner unit 12, a rectangular face opening portion 22 and a foot opening portion 23 are formed at a downstream portion (upper portion of the vehicle) of the heater core 18. Is formed. Also,
In the case 12a, sealing surfaces 22a, 23 are provided on the peripheral edges of the face opening 22 and the foot opening 23, respectively.
a is formed. The face opening 22 is for blowing the conditioned air whose temperature has been adjusted by the heater core 18 toward the upper body of the rear-seat occupant. It is connected to an outlet (not shown). On the other hand, the foot opening 23
Is for blowing the conditioned air whose temperature has been adjusted by the heater core 18 toward the feet of the rear occupant, and the rear feet located at the feet of the rear occupants via the foot ducts 26. It is connected to an outlet (not shown).

In the opening 22 for the face and the opening 23 for the foot, the blown air flows upward from below as shown by the arrow A, and the slide door 27 moves in the direction perpendicular to the air flow A to the peripheral sealing surface 22a. , 23a in the direction of arrow B shown in the figure. Then, by sliding the slide door 27 in the direction of arrow B, the face opening 2 is opened.
The opening 2 and the foot opening 23 are opened and closed, whereby a well-known face mode, bi-level mode, and foot mode can be switched as the blowing mode.

As shown in FIG. 3, the sliding door 27
A door substrate 28 and a film member 29 supported by the door substrate 28 are provided. The door substrate 28 is formed of a resin, such as polypropylene, into a cross-shaped flat frame to form a plurality of openings 28a. Then, a film member 29 is attached to the upper surface of the door substrate 28 (the surface on the side of the openings 22 and 23) so as to cover the door substrate opening 28a.

The door board 28 has both openings 2.
Elastic members 3 made of a sponge-like porous resin foam material are provided at positions opposed to the peripheral sealing surfaces 22a, 23a.
0 is fixed by means such as adhesion. This elastic member 30
Is for preventing chattering sound and hitting sound of the film member 29.

The film member 29 is formed of a thin resin material having a certain degree of flexibility, low frictional resistance, and non-permeability. Specifically, the film member 29
Is made of, for example, a PET (polyethylene terephthalate) film having a thickness of about 188 μm.

The film member 29 is formed on the peripheral sealing surface 22.
a, a mounting surface 29b attached to the door substrate 28, and mounting surfaces 29b located at both ends of the film member 29 are sealing surfaces 29a.
a is bent substantially at a right angle to a. In particular,
As shown in FIG. 4, the film sealing surface 29a and the mounting surface 2
9b is set to 90 degrees or less. The mounting surfaces 29b of the film member 29 are mounted on both ends of the door substrate 28 in the door sliding direction B. At this time, the mounting surfaces 29b are
It is substantially parallel to the side surface of the door substrate 28. In addition, the sealing surface 2
9a has an area larger than the openings 22 and 23 for closing the openings 22 and 23.

As shown in FIGS.
The film member 29 is attached to the door substrate 28 on the mounting surface 29b.
Are provided with a plurality of mounting holes 29c. The mounting hole 29c has a long hole shape, and when the film member 29 is mounted on the door substrate 28, the longitudinal direction of the long hole is directed to the air flow direction A. Further, a slit 29d is formed extending from a central portion in the longitudinal direction of the mounting hole 29c in a direction perpendicular to the air flow direction A.

As shown in FIGS. 3 and 6, on both ends of the door board 28 in the door sliding direction B, the same number of cylindrical mounting pin portions as the mounting holes 29c correspond to the positions of the mounting holes 29c. 2
8c is formed. At the tip of this pin portion 28c,
An umbrella-shaped retaining portion 28d having a diameter larger than that of the pin portion 28c is formed. The retaining portion 28d prevents the film member 29 from coming off the pin portion 28c after the door substrate 28 and the film member 29 are assembled. . And the pin part 28c
And the retaining portion 28d are integrally formed with the door substrate 28.

Further, two guide pins 28b are integrally formed on the side surfaces of the door substrate 28 at two right and left ends in a direction orthogonal to the door sliding direction B, respectively. The guide pin 28b guides the sliding of the slide door 27 in the arrow direction B. That is, as shown in FIG. 2, in the case 12 a of the air conditioner unit 12, a horizontal guide groove 31 extending parallel to the door sliding direction B is formed on an inner wall surface below the face opening 22 and the foot opening 23. , 32 are provided on both left and right sides, and guide pins 28b are slidably fitted into the guide grooves 31, 32, respectively. For this reason, the slide door 27 is slidably held by the case 12a by a fitting portion between the guide pin 28b and the guide grooves 31 and 32.

Further, as shown in FIG.
A rack 28e extending in the door sliding direction B is formed integrally with the door substrate 28 at the central lower surface (the surface on the side of the heater core 18). A pinion 34 (FIG. 1) that meshes with the rack 28e is supported by a rotating shaft (not shown), and the rotating shaft is connected to a servomotor (door driving means, not shown) disposed outside the case 12a. Then, by rotating the pinion 34 by the servo motor,
The slide door 27 moves linearly in the arrow direction B.

Next, the attachment and detachment of the door substrate 28 and the film member 29 will be described.

When assembling the film member 29 to the door substrate 28, first, a part of the outer edge of the retaining portion 28d is inserted into the slit 29d by deforming the slit 29d. Subsequently, as shown in FIG. 7, the remaining portion of the retaining portion 28d is passed through the slit 29d. Thereby, the pin portion 28c is inserted into the mounting hole 29c, and as shown in FIG.
8, the mounting surface 29b of the film member 29 is sandwiched between the main body portion and the retaining portion 28d, and the door substrate 28 and the film member 29 are integrated.

On the other hand, when disassembling the door substrate 28 and the film member 29, as shown in FIG. 8, the elastic member 30 is compressed so that the pin portion 28c is moved to the uppermost portion (the film sealing surface 29a side) in the mounting hole 29c. ), And slit 29d
Is located on the end side of the outer edge of the retaining portion 28d. In this state, the center portion of the retaining portion 28d, more specifically, the center line D in the direction orthogonal to the air flow direction A in the retaining portion 28d is located closer to the film sealing surface 29a than the slit 29d. Like that. Next, from the state of FIG. 8, the free end 29e (the lower side in FIG. 8) of the mounting surface 29b is moved in the direction of arrow C in FIG.
The slit 29d is deformed to insert a part of the outer edge of the retaining portion 28d into the slit 29d. Subsequently, the remaining portion of the retaining portion 28d is passed through the slit 29d to be disassembled.

FIG. 9 shows the sliding door 27 as the case 12a.
The film sealing surface 29a of the film member 29 is fixed to the case 12 by the elastic member 30.
a is pressed against the peripheral sealing surfaces 22a and 23a. In this state, the slit 29d is positioned closer to the film seal surface 29a than the center line D in the direction orthogonal to the air flow direction A in the retaining portion 28d.

Here, the length L1 of the slit 29d and the diameter D1 of the retaining portion 28d are set to dimensions that allow the retaining portion 28d to pass through the slit 29d when the film member 29 is attached or detached. The diameter D1 of the retaining portion 28d and the minor diameter L2 of the mounting hole 29c are set to dimensions that can prevent the film member 29 from coming off the pin portion 28c after the door substrate 28 and the film member 29 are assembled. . As a specific design example, L1 = 12 mm, D1 = 7.5 mm, L2
= 3.6 mm. The long diameter of the mounting hole 29c is 7m.
m, the diameter of the pin portion 28c is preferably about 3 mm.

Next, the operation of the above configuration will be described. By selecting the rotation direction and the rotation amount of the servomotor, the sliding position of the slide door 27 in the direction of arrow B can be set arbitrarily. Opening 22
By opening and closing the and the foot opening 23, each of the well-known face, bi-level and foot modes as the outlet mode can be selected as desired.

Next, the features of this embodiment will be described.

Since the door substrate 28 and the film member 29 are assembled by passing the retaining portion 28d through the slit 29d, the pin portion 28c and the retaining portion 28
d can be integrally formed with the door substrate 28 in advance. Therefore, a heat caulking process is not required, and the assembling process of the door substrate 28 and the film member 29 can be simplified, and the manufacturing cost can be reduced. In addition, since equipment for heat staking is not required, the manufacturing cost can be further reduced.

Further, the retaining portion 28d is formed with a slit 29d.
, The door substrate 28 and the film member 29 can be disassembled, whereby the door substrate 28 and the film member 29 can be easily disassembled, and the recycling cost can be reduced.

When a large amount of air passes through the slit 29d, a passing sound (beep sound) is generated due to a so-called whistling phenomenon, but the angle θ1 between the film sealing surface 29a and the mounting surface 29b is set to 90 degrees or less. The mounting surface 29
The gap S1 (FIG. 4) between the free end of the door b and the main body of the door substrate 28 is reduced, so that the amount of air flowing from the gap S1 and passing through the slit 29d is reduced. Can be prevented. It is desirable that the gap S1 be 3 mm or less.

The film sealing surface 29a and the mounting surface 2
When the bending angle θ1 with respect to 9b is 90 degrees or less, there is an advantage that the film member 29 is less likely to come off the pin portion 28c than when θ1> 90 degrees. That is, the film member 2
In order to remove the pin 9 from the pin 28c, the mounting surface 29b of the film member 29 must be bent by the angle θ2 shown in FIG. 4, and the angle θ2 increases as the bending angle θ1 decreases, and the film member 29 28c is less likely to come off. Therefore, it is possible to prevent the film member 29 from falling off during the air-conditioning operation.

When the pin portion 28c is moved to the uppermost portion (the film sealing surface 29a side) in the mounting hole 29c, the center line D in the direction orthogonal to the air flow direction A in the retaining portion 28d is aligned with the slit 29d. Rather than the film seal surface 29a. According to this, on the free end 29e side of the mounting surface 29b with respect to the slit 29d,
Since the area of the portion E (the hatched area in FIG. 8) where the mounting surface 29b and the retaining portion 28d overlap is small, the free end 29e of the mounting surface 29b is moved in the direction of arrow C in FIG. At this time, the overlapping portion E is easily deformed, and a part of the outer edge of the retaining portion 28d easily enters the slit 29d. Therefore, the disassembly of the door substrate 28 and the film member 29 is extremely easy.

When the slide door 27 is assembled to the case 12a, the slit 29d is
8d at the center line D in the direction perpendicular to the air flow direction A
Rather than the film seal surface 29a. According to this, the mounting surface 29 is smaller than the slit 29d.
b, the mounting surface 29b and the retaining portion 28
Since the area of the portion F (the hatched area in FIG. 9) where d overlaps is large, the overlapping portion F is not easily deformed.
It is difficult for the film member 29 to come off the pin portion 28c.

(Second Embodiment) FIG. 10 shows a second embodiment, in which round holes 29f are provided at both ends of a slit 29d to improve the tear strength at both ends of the slit 29d. When the diameter of the round hole 29f is 2 mm,
The tear strength is increased by a factor of 2 to 3 over that without a round hole. The configuration of the portion not shown in FIG.
This is the same as the embodiment.

(Third Embodiment) FIG. 11 shows a third embodiment, in which an air conditioner unit 12 arranged on an instrument panel in front of a vehicle compartment controls the temperature of air blown into the vehicle compartment. The air passing through the passage 50 on the upstream side of the heater core 18 and the cold air bypass passage 51 on the side of the heater core 18
It adopts an air mix method that adjusts the ratio of the amount of cold air that passes through the air. The slide door 27 is used as the door means of the air mix system.

The specific configuration of the slide door 26 is the first
The description may be omitted because it may be the same as the embodiment. 11, 38 is a center face opening, 39 is a side face opening, 40 is a defroster opening, 41
Is a foot opening, and 42 is a first mode door that opens and closes a passage to the center face opening 38 and passages to the defroster opening 40 and the foot opening 41.
43 is a passage to the defroster opening 40 and a foot opening 4
2 is a second mode door that opens and closes a passage to the first door.

(Other Embodiments) The sliding door according to the present invention can also be applied to an inside / outside air switching door of a vehicle air conditioner. Further, the present invention can be widely applied to an air passage switching device for an application other than the vehicle air conditioner.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a vehicle rear seat air conditioner to which a first embodiment of the present invention is applied.

FIG. 2 is a perspective view of an upper part of a case according to the first embodiment.

FIG. 3 is an exploded perspective view of the slide door according to the first embodiment.

FIG. 4 is a side view of the slide door of the first embodiment viewed from a direction orthogonal to the door sliding direction.

FIG. 5 is a perspective view of a main part of the film member of the first embodiment.

FIG. 6 is a perspective view of a main part of the door base of the first embodiment.

FIG. 7 is a perspective view showing a state where the film member of the first embodiment is assembled to a door substrate.

FIG. 8A is a front view of the slide door according to the first embodiment viewed from the sliding direction of the door, and FIG. 8B is a side view.

FIG. 9A is a front view showing a state where the single slide door according to the first embodiment is assembled to a case, and FIG. 9B is a side view.

FIG. 10 is a perspective view of a main part of a film member according to a second embodiment of the present invention.

FIG. 11 is a schematic longitudinal sectional view of a vehicle front seat air conditioner showing a third embodiment of the present invention.

[Explanation of symbols]

22, 23, 50, 51 ... air passages, 22a, 23a ...
Peripheral sealing surface, 27: sliding door, 28: door substrate,
28c: pin portion, 28d: retaining portion, 29: film member, 29a: film sealing surface, 29b: mounting surface, 2
9c: mounting hole, 29d: slit, A: air flow direction.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruki Ikuta 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Co., Ltd. (72) Inventor Tadashi Shimizu 1-chome, Hitotsukicho, Karatsu-shi, Aichi Prefecture Shimizu Within Industrial Co., Ltd. (72) Inventor Tomoji Kamiya 1st Hitotsukicho, Kariya-shi, Aichi Prefecture Shimizu Kogyo Co., Ltd. (72) Inventor Mitsugu Sanno 1st Hitotsukicho, Hittsugicho, Kariya-shi, Aichi Prefecture Shimizu Industry Co., Ltd. F-term (reference) 3L011 BJ02

Claims (8)

[Claims] 1. An air passage (22, 23, 50, 51) that slides in a direction substantially perpendicular to a flow direction (A) of air flowing through the air passage (22, 23, 50, 51) to open and close the air passage (22, 23, 50, 51). A sliding door (27), wherein the sliding door (27) is provided in the air passage (22, 2);
A flexible film member (29) for closing the air passages (22, 23, 50, 51) by pressing against the peripheral sealing surfaces (22a, 23a) of the film members (3, 50, 51); An air passage switching device having a door substrate (28) on which a film substrate (29) is mounted.
3, 50, 51) to seal the film sealing surface (29).
a), and a mounting surface (29b) bent in the air flow direction (A) at both ends of the film sealing surface (29a). The air flow direction (A) is provided on the mounting surface (29b). And a slit (29c) extending from the mounting hole (29c) in a direction substantially orthogonal to the air flow direction (A).
d) at the position corresponding to the mounting hole (29c) on the door substrate (28), and a pin portion (1) formed integrally with the door substrate (28) and inserted into the mounting hole (29c). 28c)
And a stopper (28d) integrally formed at the tip of the pin (28c) to prevent the film member (29) from coming off the pin (28c). The air passage switching device, wherein the length (L1) is set to a length that allows the retaining portion (28d) to pass when the film member (29) is detached. 2. The air passage switching device according to claim 1, wherein the door substrate and the film member are made of different materials. 3. The air passage switching device according to claim 1, wherein an angle (θ1) between the film sealing surface (29a) and the mounting surface (29b) is 90 degrees or less. 4. The pin portion (28c) is provided in the mounting hole (2).
9c), the center line (D) in the direction orthogonal to the air flow direction (A) at the retaining portion (28d) when it is moved most toward the film seal surface (29a).
The air passage switching device according to any one of claims 1 to 3, wherein the air passage is located closer to the film sealing surface (29a) than the slit (29d). 5. An air passage switching device in which an elastic member (30) is disposed between the door substrate (28) and the film sealing surface (29a), wherein the elastic member (30) causes the film to change. Seal surface (2
When 9a) is pressed against the peripheral sealing surfaces (22a, 23a), the slit (29d) forms the retaining portion (28d).
5. The film seal surface (29 a) is located on a center line (D) in a direction orthogonal to the air flow direction (A) or on the film sealing surface (29 a) side of the center line (D). 6. An air passage switching device according to any one of the preceding claims. 6. A slit (29f) is provided with a round hole (29f) at an end of the slit (29d).
The air passage switching device according to any one of the above. 7. The slide door (27), comprising the air passage switching device according to claim 1.
A plurality of air passages (22, 2
3) An air conditioner for a vehicle, which opens and closes 3). 8. An air passage switching device according to claim 1, wherein the air passing through the passage (50) of the heating heat exchanger (18) and the heating heat exchanger (8) are provided. 1
8) An air conditioner for a vehicle, wherein an air flow ratio with respect to the cool air passing through the cool air bypass passage (51) is adjusted by the slide door (27).