JP2003094930A - Air passage select device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfactorily develop the self-sealing ability of a film member 29 in an air passage select device using a film type slide door 27. SOLUTION: The slide door 27 comprises the flexible film member 29 closing air passages 22 and 23 by pressingly fitting to the peripheral edge seal faces 22a and 23a of the air passages 22 and 23 and door base plates 28 having opening parts 28a acting an air pressure on the film member 29. The film member 29 is slightly bent in a chevron shape to the peripheral edge seal faces 22a and 23a at one or a plurality of positions parallel generally with the center line of a lateral direction to a sliding direction C orthogonal to the sliding direction B. Thus, even if a specific seal part is not used, the self-seal performance of the film member 29 can be satisfactorily developed since the film member 29 is so formed as to fit the peripheral edge seal faces 22a and 23a formed in the chevron shape which forms the draft of the case.

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, and more particularly to a film type sliding door for switching air passages.

[0002]

2. Description of the Related Art The present applicant has previously filed Japanese Patent Application Laid-Open No. 12-4353
Japanese Patent Publication No. 7 proposes a structure for improving the self-sealing property of a film member in an air passage switching device that switches an air passage with a film type slide door.
In this prior art device, as shown in FIG. 12, a substantially flat plate-shaped slide door 27 faces the plurality of air passages 22 and 23 in the case 12a, and the air passage opening surface 2 is formed.
It is arranged so as to be slidable substantially in parallel with No. 4. The sliding door 27 includes a door substrate 28 having an opening (not shown).
And a film member 29 movably supported on the air passage opening surface 24 side at both ends of the door substrate 28.

Then, an air flow is blown to the inner surface of the film member 29 through an opening (not shown) of the door substrate 28, and the film member 29 is pressed against the peripheral sealing surfaces 22a and 23a of the air passage by the wind pressure, thereby generating air. Passage 22,
Seal 23. Further, when the slide door 27 slides along the air passage opening surface 24, the film member 29 opens and closes the air passages 22 and 23 to switch the air passages.

[0004]

The sliding door 27 is
A guide pin 28b is provided on the side surface with respect to the door sliding direction B, and the guide pin 28b is fitted into the guide grooves 31 and 32 provided on the case 12a on both sides and slides. Due to that structure, the case 12a is generally divided into two in the sliding width direction C which is orthogonal to the sliding direction B, and the sliding door 27 is shown in FIG.
The structure is sandwiched between the cases 12aR and 12aL on the right side and the left side of the center 2.

Further, the case 12a is generally made of an injection-molded product of resin, and it is very difficult to form the guide grooves 31, 32 facing the inner wall surface of one case 12a. The case 12 is formed by fitting two cases 12aR and 12aL each having a groove on one side formed on the inner wall surface.
a is constructed.

However, since the cases 12aR and 12aL have a draft for facilitating the die cutting by injection molding, when the fitted case 12a is viewed in a cross section in the sliding width direction C, FIG. As shown in the figure, the case fitting part at the center has a slightly elevated shape. On the other hand, although the film member 29 is flexible, it does not come into close contact with the mountain-shaped air passage opening surface 24, and a gap having a substantially triangular cross section remains near the apex, so that the film member 29 self-seals. However, in some cases, separate sealing parts had to be added to the peripheral sealing surfaces 22a and 23a.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to exhibit good self-sealing property of a film member in an air passage switching device using a film type sliding door. It is to provide a structure that can.

[0008]

In order to achieve the above object, the present invention employs the following technical means. Claim 1
In the described invention, the air passages (22, 23) are provided with the slide door (27) whose sliding direction (B) is substantially orthogonal to the flow direction (A) of the air flowing through the air passages (22, 23).
An air passage switching device that opens and closes an air passage (2) by a slide door (27).
A flexible film member (29) that closes the air passages (22, 23) by pressure-bonding to the peripheral sealing surfaces (22a, 23a) of (2, 23), and wind pressure is applied to the film member (29). Door board (2) having an opening (28a)
8) and the film member (29) is parallel to the center line in the sliding width direction (C) orthogonal to the sliding direction (B).
Peripheral sealing surface (22a, 23
It is characterized by a slight mountain fold on the side a).

This is because by bending the film member (29) to match the surface change of the case, the peripheral edge seal surfaces (22a, 23a) are mountain-shaped due to the draft of the case without using special sealing parts. ), The film member (29) comes into close contact with the film member (29), so that the film member (29) can exhibit good self-sealing performance.

Further, by forming the film member (29) into a slightly mountain-folded shape substantially in conformity with the mountain shape of the peripheral sealing surfaces (22a, 23a), the sliding door (27) in the sliding direction (B) is formed. ) Is corrected. Even if the peripheral sealing surfaces (22a, 23a) have polygonal surface changes instead of simple mountain-shaped changes, the same effect can be obtained by providing a plurality of mountain folds and matching the surface changes. .

According to the second aspect of the invention, the air passage (2
A slide door (27) having a sliding direction (B) substantially orthogonal to the flow direction (A) of the air flowing through
An air passage switching device that opens and closes air passages (22, 23) with a slide door (27).
7) has a peripheral sealing surface (2) for the air passages (22, 23).
2a, 23a) and a flexible film member (29) that closes the air passages (22, 23) by pressure bonding, and an opening (28) for applying wind pressure to the film member (29).
and a door substrate (28) having a), the film member (29) has a peripheral sealing surface (22a, 23) parallel to the center line of the sliding width direction (C) orthogonal to the sliding direction (B).
It is characterized by being bent and formed in an R shape that slightly swells to the side a).

This is because the surface having the draft is not necessarily a flat surface. Therefore, even if the surface has an R shape, the self-sealing performance can be satisfactorily exhibited by bending the surface into an R shape suitable for the surface change. To be done.

In the invention according to claim 3, the air passage (2
A slide door (27) having a sliding direction (B) substantially orthogonal to the flow direction (A) of the air flowing through
An air passage switching device that opens and closes air passages (22, 23) with a slide door (27).
7) has a peripheral sealing surface (2) for the air passages (22, 23).
2a, 23a) and a flexible film member (29) that closes the air passages (22, 23) by pressure bonding, and an opening (28) for applying wind pressure to the film member (29).
and a door substrate (28) having a), and the film member (29) is provided at both ends in the sliding direction (B) and substantially in the center in the sliding width direction (C) orthogonal to the sliding direction (B). Alternatively, it is characterized in that notches (29e) are provided at a plurality of locations.

As a result, the film member (29) is easily bent at the line connecting the cutouts (29e) provided at both ends, and the peripheral edge sealing surface (which is mountain-shaped due to the draft of the case even with a slight wind pressure) The film member (29) is in good contact with the film members (22a, 23a), and the self-sealing performance of the film member (29) is excellently exhibited. Also,
By providing the cutouts (29e) at a plurality of locations, the film member (29) can be formed into a plurality of mountain fold shapes or a substantially R shape.

According to the invention of claim 4, the notch (29
The shape on the tip side of e) is a substantially isosceles triangle whose apex faces the center side in the sliding direction (B), and is characterized by a shape with R attached to the apex to smoothly connect the isosceles. . Accordingly, even if the film member (29) slides while being pressed against the peripheral sealing surfaces (22a, 23a) by wind pressure, it is possible to prevent the notch (29e) from being caught by the peripheral sealing surfaces (22a, 23a). , Film material (2
Even if stress is applied to 9), the stress is not concentrated at the apex of the notch (29e) and is dispersed, so that the shape is hard to break.

According to the fifth aspect of the invention, the film member (29) is arranged along the center line passing through the notches (29e) facing each other at both ends in the sliding direction (B) and corresponding in the sliding width direction (C). In addition, a slight mountain fold is made on the side of the peripheral sealing surface (22a, 23a).

As a result, the film member (29) comes into close contact with the peripheral sealing surfaces (22a, 23a) which are mountain-shaped due to the draft of the case from the beginning of the construction of the air passage switching device. , Film material (2
The self-sealing performance of 9) is excellently exhibited. Further, the sliding door (27) may be inclined with respect to the sliding direction (B) by following the film member (29) with a slight mountain fold to the mountain shape of the peripheral sealing surfaces (22a, 23a). It can be prevented.

According to the invention of claim 6, the door substrate (2
When the film member (29) is attached to 8), the linear gear (28d) for sliding provided on the door board (28)
It is characterized in that it is arranged in the notch (29e).
As a result, the door substrate (28) can be made thin, and the entire slide door mechanism unit including the drive unit can be made thin when the device is configured as an air passage switching device.

According to the invention of claim 7, the door substrate (2
When the film member (29) is attached to 8), the cable mooring portion (28e) for sliding provided on the door substrate (28)
Are arranged in the notches (29e). This also makes it possible to make the door substrate (28) thin and to make the entire slide door mechanism unit including the drive unit thin when configured as an air passage switching device. By the way, the reference numerals in parentheses of the above-mentioned means are examples showing the correspondence with the concrete means described in the embodiments described later.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment of the present invention, in which the air passage switching device of the present invention is incorporated in a blowout mode switching portion of a vehicle air conditioner. By the way, the vehicle air conditioner of the present embodiment,
The present invention relates to a rear seat air conditioner that air-conditions a rear seat side space such as a one-box car having a large passenger compartment.

In FIG. 1, reference numeral 10 denotes a rear seat vehicle air conditioner, and the main body of this air conditioner 10 is installed between the vehicle outer wall and the vehicle inner wall at a position near the floor surface at the rear part of the vehicle. The vehicle air conditioner 10 is roughly composed of a blower unit 11 and an air conditioner unit 12 which are arranged side by side in the vehicle front-rear direction.

The blower unit 11 is for sucking the inside air in the rear part of the vehicle interior into the air conditioner 10. In this embodiment, the vehicle air conditioner 10 sucks only the inside air. Therefore, inside air intake ports (not shown) are formed on both sides of the blower unit 11 in the vehicle width direction (the front-back direction of the paper surface of FIG. 1). Further, the blower unit 11 is provided with a centrifugal electric blower 13,
The blower 13 has a centrifugal fan 14 and a fan driving motor 14 a, and the centrifugal fan 14 is arranged inside a scroll casing 15.

On the air downstream side of the scroll casing 15 of the blower unit 11, there is formed a duct portion 16 forming a flow path extending in the vehicle front-rear direction. This duct part 1
6 is an evaporator 17 for changing the flow of the blown air blown from the blower unit 11 from the lower side to the upper side.
It is intended to be introduced into. The duct portion 16 connects the outlet of the blower unit 11 to the inlet of the air conditioner unit 12.

The air conditioner unit 12 is the blower unit 1
The resin case 12 is arranged on the rear side of the vehicle with respect to 1.
The flow path is formed by "a" so as to extend from the lower side to the upper side. In the case 12a of the air conditioner unit 12, an evaporator 17 as a heat exchanger for cooling the conditioned air,
A heater core 18 as a heat exchanger for heating the conditioned air is arranged at a position downstream of the air.

The evaporator 17 and the heater core 18 are
The air-conditioning unit 12 is arranged in the vertical direction of the vehicle so that its ventilation surface is substantially horizontal. Therefore, the blown air blown from the blower 13 flows into the case 12a of the air conditioner unit 12 after flowing from the front of the vehicle to the rear by the duct portion 16. Then, the blast air introduced into the case 12a is
The flow is changed from the lower side to the upper side and passes through the evaporator 17 and the heater core 18.

The evaporator 17 is a compressor (not shown),
It constitutes a well-known refrigeration cycle that is pipe-connected with a condenser, a liquid receiver, and a decompressor, and cools and dehumidifies the air in the case 12a. The heater core 18 is a heat exchanger for heating that uses hot water (cooling water) from the automobile engine as a heat source, and heats the cold air cooled by the evaporator 17.

In this 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, and the heater core 18 is adjusted by adjusting the opening degree of the hot water valve 19.
The temperature of the air blown into the passenger compartment is adjusted by adjusting the amount of hot water to the vehicle. Further, in the case 12 a of the air conditioner unit 12, there is provided a cold air bypass passage 20 through which the air (cold air) that has passed through the evaporator 17 bypasses the heater core 18 and flows.
0 is opened and closed by the cold air bypass door 21.

In the case 12a of the air conditioner unit 12, a face opening 22 and a foot opening 23 as air passages are formed in the downstream side portion (upper vehicle portion) of the heater core 18. Face opening 22
Is for blowing the conditioned air whose temperature is adjusted by the heater core 18 toward the upper half of the body of the rear seat occupant, and is connected to the rear seat face outlet (not shown) of the vehicle ceiling through the face duct 25. Has been done.

On the other hand, the foot opening 23 is for blowing the conditioned air, the temperature of which has been adjusted by the heater core 18, toward the feet of the rear seat occupant, and through the foot duct 26, the rear seat occupant. Is connected to an unillustrated rear seat foot outlet located at the foot of the. The face opening 22 and the foot opening 23 are opened and closed by a slide door 27, whereby the face mode, the bi-level mode, and the foot mode known as the blowing mode can be switched.

Next, a specific example of the drive mechanism for the slide door 27 will be described. As shown in FIG. 2, the slide door 27 includes a face opening 22 and a foot opening 23 provided in the case 12a of the air conditioner unit 12.
It slides in the direction of the arrow B shown in the figure along the air passage opening surface 24.

As shown in FIGS. 3 to 4, the slide door 27 includes a door substrate 28 and a film member 29 supported by the door substrate 28. The door board 28 is
A plurality of openings 28a are formed of a resin such as polypropylene in a flat frame shape. And the door substrate 28
The film member 29 is attached to the upper surface (the surface on the side of the opening surface 24) so as to cover the door substrate opening 28a, and the wind pressure in the case 12a can be applied to the film member 29 by the door substrate opening 28a. .

Then, the peripheral edge sealing surface 2 is provided on the upper surface portions on both sides in the sliding width direction C orthogonal to the door sliding direction B of the door substrate 28.
An elastic member 30 such as a sponge-like porous resin foam material is fixed to the surfaces 2a and 23a by means of adhesion or the like. The elastic member 30 is for preventing chattering noise and tapping noise of the film member 29.

The film member 29 has a peripheral sealing surface 22.
The sealing surface 29a that is crimped to the a and 23a, and the door substrate 28
And a mounting surface 29b which is formed on the both ends of the film member 29.
It is bent substantially at a right angle to a. The mounting surface 29b of the film member 29 is arranged in the door sliding direction B of the door substrate 28.
The mounting surfaces 29b are substantially parallel to the side surface of the door substrate 28.

The sealing surface 29a has the openings 22 and 23.
Has a larger area than the openings 22 and 23 in order to occlude. The film member 29 is made of a thin film resin material that is flexible to some extent, has a small frictional resistance, and is impermeable to air. Specifically, the film member 29
Is made of, for example, a PET (polyethylene terephthalate) film having a thickness of about 190 μm. Film member 2
The film member 29 is attached to the attachment surface 29b of the door substrate 2
A plurality of mounting holes 29c for mounting on the mounting board 8 are provided.

As shown in FIGS. 3 to 4, mounting holes 29c are provided.
Has an elongated hole shape, and the longitudinal direction of the elongated hole is the air flow direction A when the film member 29 is attached to the door substrate 28.
Are oriented parallel to each other. The longitudinal dimension of the elongated hole is larger than the moving amount of the film member 29 so that the film member 29 receives the wind pressure and moves toward the opening surface 24 so that the peripheral edge sealing surfaces 22a and 23a can be pressed against each other. It is set.

As shown in FIGS. 3 to 4, the door substrate 28
The same number of mounting pins 28c as the mounting holes 29c are integrally projectingly formed at both ends of the mounting hole 29c, and the mounting holes 29c of the mounting surface 29b of the film member 29 are fitted into the mounting pins 28c. The film member 29 is attached to the door substrate 28 by caulking.

As shown in FIG. 3, when heat caulking is performed,
The heat staking portion of the head of the mounting pin 28c has a small amount of deformation in the pin axial direction, so that the door substrate 28 and the mounting pin 2
8c A clearance is formed between the head and the heat-crimped portion. As a result, the film member 29 can move in the door sliding direction B, and it is possible to absorb the manufacturing dimensional variations of the film member 29 and the door substrate 28.

That is, when the length of the film member 29 in the direction B of the door slide is shorter than the door substrate 28, the film member 29 can be mounted at a position where the mounting surface 29b of the film member 29 is close to the door substrate 28. , When the length of the film member 29 in the direction of the door slide B is longer than the door substrate 28,
Since the mounting surface 29b of the film member 29 can be mounted on the door board 28 at a position apart from the door board 28, it is possible to absorb dimensional variations.

Specifically, the door board 28 and the mounting pin 28
When the clearance between the c head and the heat-crimped portion is 3 mm, both ends of the film member 29 can absorb the dimensional variation of the film member 29 or the like having a maximum size of 6 mm. Further, two guide pins 28b are provided on each of the side surfaces of the door board 28 on the left and right ends in the door sliding width direction C.
Are integrally formed by protruding molding. This guide pin 28b
Guides the sliding of the slide door 27 in the arrow direction B.

That is, as shown in FIG. 5, in the case 12a of the air conditioner unit 12, a horizontal direction extending parallel to the door sliding direction B is provided on the inner wall surface below the face opening 22 and the foot opening 23. Guide grooves 31, 32
Is provided in each of the left and right cases 12aR, 12aL, and the guide pins 28b are slidably fitted in the guide grooves 31, 32, respectively. For this reason, the slide door 27 has the guide pin 28b and the guide grooves 31,3.
It is slidably held by the case 12a by the fitting part with the 2nd part.

Further, a linear gear (rack) 28d extending parallel to the door sliding direction B is provided integrally with the door substrate 28 on the lower surface of the door substrate 28 (the surface on the heater core 18 side). As shown in FIG. 4, the linear gear 28d is formed on the lower surface of the central portion of the door board 28.

On the other hand, as shown in FIG. 2, in the case 12a, a rotary shaft 33 is installed at a position immediately below the slide door 27 and at an intermediate position between the face opening 22 and the foot opening 23. It is arranged in a direction orthogonal to the moving direction B. The rotating shaft 33 is made of resin, and the case 1
It is rotatably supported by bearing holes in the wall surface of 2a.

Of the rotary shaft 33, the linear gear 2
8d is a circular connecting gear (pinion) at the intermediate portion corresponding to 8d.
4 is integrally formed of resin. This connecting gear 3
Reference numeral 4 is located in the case 12a and meshes with the linear gear 28d. Further, one end of the rotary shaft 33 is the case 1
2a is projected to the outside, and a circular drive-side gear 35 is arranged at the protruding end. The drive-side gear 35 is also formed of resin integrally with the rotary shaft 33.

Servo motor 36 constituting the door drive device
2 is arranged on the upper side of the case 12a as shown in FIG. 2, and the fan gear 38 is connected to the output shaft 37 thereof. The fan gear 38 meshes with the drive gear 35 described above. As a result, the rotation of the servomotor 36 causes the output shaft 3 to rotate.
It is transmitted to the rotating shaft 33 via the 7, the fan gear 38, and the drive side gear 35. Further, the rotation of the rotating shaft 33 is caused by the rotation of the connecting gear 34.
And the linear gear 28d are engaged with each other, the sliding door 2
Converted to 7 linear motions.

In this embodiment, the cold air bypass passage 2
The rotary shaft 21a of the cold air bypass door 21 that opens and closes 0
It is connected to the rod hole 38a of the fan gear 38 via the door lever 39 and the connecting rod 40, and the cold air bypass door 21 is rotated in conjunction with the rotational position of the fan gear 38.

Next, the operation of the above structure will be described. By selecting the rotation direction and rotation amount of the output shaft 37 of the servo motor 36, the arrow B of the slide door 27 is selected.
The sliding position in the direction can be set arbitrarily, whereby the face opening 22 and the foot opening 23 are opened and closed,
The well-known face, bi-level, and foot modes can be selected as desired as the outlet mode.

Next, the slide door 27 according to the present embodiment.
Characteristic points of the air passage seal structure in FIG.
As shown in FIGS. 3 to 4, the film member 29 is provided with notches 29e at both ends in the sliding direction B and substantially in the center in the sliding width direction C orthogonal to the sliding direction B.

As a result, the film member 29 is easily bent at the line connecting the notches 29e provided at both ends. In particular, in the present embodiment, both ends of the film member 29 are bent substantially at right angles to the sealing surface 29a, and therefore the notch 29e is formed in this bent portion to facilitate bending in the sliding width direction C. . As a result, the film member 29 adheres well to the peripheral sealing surfaces 22a and 23a that are mountain-shaped due to the draft of the case with a slight wind pressure without using a special sealing component, and the film member 2
The self-sealing performance of 9 is exhibited well.

The shape of the tip of the notch 29e is a substantially isosceles triangle with the apex facing the center in the sliding direction B, and the apex is R to smoothly connect the isosceles. ing. As a result, the peripheral sealing surface 22 is exposed to wind pressure.
Even if the film member 29 slides while being pressed against the a and 23a, the notch 29 is formed in the peripheral sealing surfaces 22a and 23a.
Even if the film member 29 is stressed, the shape will be dispersed without being concentrated on the apex of the notch 29e, and the film member 29 will not be easily torn.

Further, the film member 29 has a peripheral edge sealing surface 22 along the center line passing through the notches 29e at both ends thereof.
A slight mountain fold is made on the a and 23a sides. This allows
Peripheral sealing surfaces 22a, 23a that are mountain-shaped due to the draft of the case from the beginning when configured as an air passage switching device.
Since the film member 29 has a shape in close contact with the
The self-sealing performance of the film member 29 is exhibited well. In addition, by making the film member 29 into a shape that is substantially in conformity with the mountain shape of the peripheral edge sealing surfaces 22a and 23a by making a slight mountain fold, the sliding door 2 in the sliding direction B
The inclination and shift of 7 are corrected.

Further, when the film member 29 is attached to the door board 28, the sliding rack 2 provided on the door board 28.
8d is arranged in the cutout 29e. FIG. 10 shows a conventional gear-driven slide door 27. Conventionally, the thickness of the rack 28d is added to the thickness of the sliding door portion. On the other hand, by arranging the rack 28d using the notch 29e, the door substrate 28
In addition to being thin, the entire slide door mechanism section including the drive section can be made thin when configured as an air passage switching device.

(Second Embodiment) FIG. 7 shows a slide door 27 according to a second embodiment. It differs from the first embodiment only in that it is a heater control cable drive type as opposed to a gear drive type. Therefore, when the film member 29 is attached to the door substrate 28, the sliding cable mooring portion 28e provided on the door substrate 28 is arranged in the notch 29e.

FIG. 11 shows a conventional heater control cable drive type sliding door 27. Conventionally, the thickness of the portion for protruding the cable mooring portion 28e has been added to the thickness of the sliding door portion. On the other hand, by disposing the cable mooring portion 28e using the notch 29e, the door substrate 28 can be made thin, and the entire slide door mechanism portion including the drive portion when configured as an air passage switching device, It can be made thin.

(Third Embodiment) FIG. 8 is a sectional view showing a state in which a slide door according to a third embodiment of the present invention is assembled. The first embodiment is the left and right case 12a.
Intermediate case 12aS that also serves as a partition between R and 12aL
It is different in that it is configured. As a result, the peripheral edge sealing surfaces 22a and 23a have a polygonal surface change instead of a simple mountain shape. However, by providing a plurality of notches 29e and mountain folds in accordance with the surface change, it is possible to realize the same as the first embodiment. The same effect can be obtained.

(Fourth Embodiment) FIG. 9 is a sectional view showing a state in which a slide door according to a fourth embodiment of the present invention is assembled. The first embodiment is the left and right case 12a.
The difference is that the draft provided on the R and 12aL is an R shape having a large curvature. Since the surface having the draft is not necessarily a flat surface, a plurality of notches (29e) are provided so that the film member 29 has a substantially R shape.
As described above, even if the surface having the draft is R-shaped, the self-sealing performance is satisfactorily exhibited by bending and forming the R-shape that matches the surface change.

(Other Embodiments) The present invention is not limited to the above embodiments, but can be modified or expanded as follows. In each of the above-described embodiments, the mountain fold is provided at the approximate center in the sliding width direction C of the film member 29, but this is because the fitting portions of the left and right cases are generally configured at the approximate center, and for some reason. When the fitting portions of the left and right cases are biased in either of the sliding width directions C, it is preferable that the mountain folds of the film member 29 also be positioned corresponding to the fitting portion position.

The case 12a is replaced by the left and right cases 12a.
Although it is assumed that the air passage opening surface 24 is formed of one case without a case fitting portion, the peripheral edge sealing surface 22 is not limited to this.
By forming the center of a and 23a into a slight mountain shape and making the corresponding film member 29 also mountain-folded, the film member 29 is made to follow the mountain shape of the case and slides in the sliding direction B. The door 27 may be prevented from being inclined.

Although both ends of the film member 29 are attached to the door substrate 28 in a direction parallel to the door sliding direction B, the invention is not limited to this, and the door sliding width direction C orthogonal to the door sliding direction B is also possible.
It may be attached to both ends of.

Further, in the film member 29, the mounting surface 2
Although the angle of 9b with respect to the sealing surface 29a is substantially right angle, the invention is not limited to this, and when wind pressure is applied to the film member 29, the film member 29 moves to the opening surface 24 side of the air passage, and the peripheral sealing portion. The angle may be such that it can be pressed against the 22a and 23a. Further, although the elastic member 30 is arranged on the upper surface side of the door substrate 28, the elastic member 30 may not necessarily be arranged.

Although the sliding door 27 has a substantially quadrangular shape, it is not limited to this and may have a parallelogram shape or a trapezoid shape as long as it has two sides parallel to the door sliding direction B. Further, the shape of the tip end side of the cutout 29e is not limited to the isosceles triangle and may be a circle.

Further, the slide door 27 according to the present invention is used as an inside / outside air switching door of a vehicle air conditioner or the heater core 1.
The present invention can also be applied to an air mix door or the like that adjusts the air flow rate ratio between the hot air passing through 8 and the cold air passing through the cold air bypass passage 20 of the heater core 18. Furthermore, the present invention can be widely applied to air passage switching devices for applications other than vehicle air conditioners.

[Brief description of drawings]

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

FIG. 2 is an enlarged front view of a main part of FIG.

FIG. 3 is a perspective view of a single unit of the slide door according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a state where the film member of FIG. 3 is assembled to a door substrate.

FIG. 5 is a perspective view of the upper part of the case before the slide door is assembled.

FIG. 6 is a cross-sectional view showing a state in which the slide door according to the first embodiment of the present invention is assembled in the case of FIG.

FIG. 7 is a perspective view of a single unit of a slide door according to a second embodiment of the present invention.

FIG. 8 is a sectional view showing a state in which a slide door according to a third embodiment of the present invention is assembled.

FIG. 9 is a sectional view showing a state in which a slide door according to a fourth embodiment of the present invention is assembled.

FIG. 10 is a perspective view of a conventional rack drive type slide door.

FIG. 11 is a perspective view of a conventional heater control cable drive type sliding door.

12 is a cross-sectional view showing a state in which a conventional rack drive type slide door is assembled to the case of FIG.

[Explanation of symbols]

22 Face opening (air passage) 22a peripheral sealing surface 23 Foot opening (air passage) 23a Peripheral sealing surface 27 Sliding door 28 door board 28a opening 28d rack (linear gear) 28e Cable mooring section 29 Film member 29e Notch A Air flow direction B Sliding direction of sliding door C Sliding door sliding width direction

Claims (7)

[Claims] 1. A slide door (27) having a sliding direction (B) substantially orthogonal to a flow direction (A) of air flowing through the air passages (22, 23) is provided, and the air passages (22, 2) are provided.
3) An air passage switching device for opening and closing the slide door (27), wherein the slide door (27) includes the air passage (22,
A flexible film member (29) for crimping the air passages (22, 23) by pressure-bonding to the peripheral sealing surfaces (22a, 23a) of (23), and an opening for applying wind pressure to the film member (29). Door board (2) having a portion (28a)
8), the film member (29) has one or more locations parallel to the center line in the sliding width direction (C) orthogonal to the sliding direction (B), and the peripheral sealing surface (22a, An air passage switching device characterized in that a slight mountain fold is made on the side of 23a). 2. A slide door (27) having a sliding direction (B) substantially orthogonal to a flow direction (A) of air flowing through the air passages (22, 23) is provided, and the air passages (22, 2) are provided.
3) An air passage switching device for opening and closing the slide door (27), wherein the slide door (27) includes the air passage (22,
A flexible film member (29) for crimping the air passages (22, 23) by crimping to the peripheral sealing surfaces (22a, 23a) of 23), and an opening for applying wind pressure to the film member (29). Door board (2) having a portion (28a)
8), the film member (29) is slightly parallel to the center line in the sliding width direction (C) orthogonal to the sliding direction (B), and is slightly closer to the peripheral sealing surface (22a, 23a) side. An air passage switching device characterized by being bent and formed into an R shape that swells to the inside. 3. A slide door (27) having a sliding direction (B) substantially orthogonal to a flow direction (A) of air flowing through the air passages (22, 23) is provided, and the air passages (22, 2) are provided.
3) An air passage switching device for opening and closing the slide door (27), wherein the slide door (27) includes the air passage (22,
A flexible film member (29) for crimping the air passages (22, 23) by pressure-bonding to the peripheral sealing surfaces (22a, 23a) of (23), and an opening for applying wind pressure to the film member (29). Door board (2) having a portion (28a)
8) and the film member (29) is provided at both ends in the sliding direction (B) and at substantially the center or a plurality of positions in the sliding width direction (C) orthogonal to the sliding direction (B). , Notches (29
e) An air passage switching device characterized by being provided. 4. The shape of the notch (29e) on the distal end side is a substantially isosceles triangle whose apex faces the center side in the sliding direction (B), and the apex is rounded to make the isosceles smooth. The air passage switching device according to claim 3, wherein the air passage switching device has a shape connected to the air passage. 5. The film member (29) is arranged along a center line that passes through the notches (29e) facing each other at both ends in the sliding direction (B) and corresponding in the sliding width direction (C),
4. The air passage switching device according to claim 3, wherein a slight mountain fold is formed on the side of the peripheral edge sealing surface (22a, 23a). 6. A linear gear (28d) for sliding provided on the door substrate (28) when the film member (29) is attached to the door substrate (28) is provided in the cutout (29e). The air passage switching device according to claim 3, wherein the air passage switching device is arranged in 7. A sliding cable mooring portion (28e) provided on the door substrate (28) when the film member (29) is attached to the door substrate (28) is provided in the cutout (29e). The air passage switching device according to claim 3, wherein the air passage switching device is arranged in