JP2001347820A - Air passage switching device and air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of abnormal sound (hollow sound and chattering noise) by a film member in an air passage switching device using a film type slide door. SOLUTION: A lattice 22a extending in parallel to a sliding direction of a slide door 26 and partitioning an opening surface into a plurality of surfaces is formed in an air passage 22. The slide door 26 is provided with a film member 26b, a door substrate 26a for supporting the film member 26b and an elastic member 26e for pressing the film member 26b on a peripheral edge sealing surface 22b of the air passage 22 and an end face of the lattice 22a. In a direction W orthogonally crossed with the sliding direction of the slide door 26, an interval L1 between the end face of the lattice 22a at the center part and the door substrate 26a is made not less than an interval L2 between the peripheral edge sealing surface 22b at an end part of the air passage 22 and the door substrate 26a.

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 slide door sliding along an opening surface of an air passage, and an air conditioner for a vehicle using the same.

[0002]

2. Description of the Related Art The present applicant has disclosed in Japanese Patent Laid-Open No. 8-258.
Japanese Patent Publication No. 538 and the like have already proposed a type in which an air passage in a vehicle air conditioner is switched by using a slide door of this type. Based on this conventional technology, the present inventors have made a trial study of an air passage switching device shown in FIGS. 10 and 12 are AA sectional views of FIG. 3, FIG. 11 is a CC sectional view of FIG. 10, and FIG. 13 is a BB sectional view of FIG.

[0003] In this prototyped and examined apparatus, the slide door 26 is provided with a door substrate 26a having a substantially flat shape and a resin film member 26b supported by the door substrate 26a, and an opening provided on the door substrate 26a. The air flow from the direction of arrow b through the portion 26c (see FIG. 5)
6b, and the wind pressure of this air flow acts on the film member 26b.

[0004] The wind pressure causes the film member 26 b to move the peripheral sealing surface 22 of the opening 22 or 23 of the case 120.
b and 23b (FIGS. 12 and 13) to close the case-side opening 22 or 23, and slide the slide door 26 in the direction of arrow a so that the film member 26
When b is separated from the case-side opening 22 or 23, the case-side opening 22 or 23 is opened. Thereby, the air passage can be switched.

By the way, when the film type slide door 26 as described above is actually manufactured and examined, when the opening area of the case side openings 22 and 23 becomes large, the wind pressure in the passage in the closed state of the openings 22 or 23 is increased. As a result, a phenomenon occurs in which the film member 26b is largely curved and enters the opening 22 or 23. Then, the opening 2
A gap is generated between the peripheral sealing surfaces 22b, 23b of the second and the second 23 and the film member 26b, so that air leakage occurs, and when the sliding door 26 moves, the curved portion of the film member 26b forms a peripheral edge of the opening 22,23. A problem arises in that it bites into a corner and increases the operating force of the slide door 26.

Therefore, as shown in FIG. 3, lattices 22a and 23a are formed on the case 120 side in the middle of the openings 22 and 23 and extend in the sliding direction a of the slide door 26 to partition the opening surface into two. Although consideration was given to suppressing the curvature of the member 26b, simply forming the lattices 22a and 23a causes problems such as the film member 26b colliding with the lattices 22a and 23a and generating a tapping sound.

Therefore, an elastic member 26e is arranged between the door substrate 26a and the film member 26b, and the film member 26b is opened by the elastic reaction force of the elastic member 26e.
2, 23 peripheral sealing surfaces 22b, 23b and grid 22
The structure which always pressed on the end surface of a and 23a was considered.

According to this, the phenomenon that the film member 26b is largely curved and enters the openings 22 and 23 can be prevented by the lattices 22a and 23a, and a sound such as a sound due to a collision between the film member 26b and the lattices 22a and 23a. Can be prevented by the elastic member 26e.

[0009]

When the operating characteristics of the above-produced apparatus were evaluated under actual use conditions, it was newly found that harsh noises were generated from the film member 26b. Then, when the mechanism of generation of this abnormal noise was examined in detail by experiment, the following reasons were found.

That is, the case 120 for forming the openings 22 and 23 is resin-molded in two parts for reasons such as molding. D in FIG. 3 is a division plane of the case 120. In the example of FIG. 3, the division plane D is set along the lattices 22a and 23a at a position before the lattices 22a and 23a. Therefore,
The case 120 includes left and right divided case bodies 121, 1 in FIG.
22 are integrally connected by fastening means (not shown).

With such a division surface D, the sectional shape of each of the divided case bodies 121 and 122 (the sectional shape in the direction W orthogonal to the door sliding direction a) becomes a U-shape. Each divided case body 121, 12
A phenomenon occurs in which the portion near the second dividing plane D falls inside the case.

FIG. 10 shows an assembled state of the slide door 26 in a state in which a portion near the division surface D has fallen into the inside of the case. When such an assembly state occurs,
In the portion near the division plane D at the center of the opening, the lattices 22a, 2
The distance L1 between the end surface of the opening 3a and the upper surface of the door substrate 26a becomes smaller than the distance L2 at the ends in the W direction of the openings 22, 23 due to the above-mentioned falling phenomenon (L1 <L2).

For this reason, the film member 26b is strongly pressed in the portion near the division surface D at the center of the opening as compared with the other portions, and this causes the slide door 26 to repeatedly move back and forth. A concave permanent distortion occurs in the film member 26b.

In the film member 26b, the elastic member 2 is located at an intermediate portion between the lattices 22a and 23a and the ends in the W direction of the openings 22 and 23 (the section taken along the line CC in FIG. 10).
Since the pressing force due to the elastic reaction force of 6e does not directly act, when the film member 26b passes through the peripheral sealing surfaces 22b and 23b of the openings 22 and 23, the above-mentioned concave permanent distortion portion causes the elastic reaction of the film member 26b itself. It jumps up due to force, causing irregular deformation and producing a strange sound (pok sound).

FIG. 11 (a sectional view taken along the line CC of FIG. 10) shows a state in which the film member 26b passes through the peripheral sealing surfaces 22b and 23b of the central lattice 123 of the case 120.
The clicking noise is generated both when passing through the peripheral sealing surfaces 22b and 23b of the central lattice 123 and when passing through the peripheral sealing surfaces 22b and 23b at the end in the door sliding direction a.

Therefore, as shown in FIG. 12, the present inventors have added an elastic member 26e also to the film member 26b at an intermediate portion between the lattices 22a and 23a and the ends of the openings 22 and 23 in the W direction. Then, a prototype in which the pressing force against the film member 26b was increased was examined.
According to this, it has been found that the concave permanent distortion portion is prevented from being deformed by an increase in the pressing force, and the generation of the popping noise can be prevented.

However, instead, the film member 26
It was found that abnormal noise (chattering noise) caused by the increase in the frictional force of b. That is, a predetermined dust resistance and durability test in an environment where dust is mixed in the blast air (the durability test conditions are JI
(Door reciprocates 20,000 times under F3 conditions of SD0207)
Is performed, the surface of the film member 26b is defaced, and the film surface roughness increases from the initial 0.29 μm RZ to 0.61 μm RZ after the test. This increase in the surface roughness and the pressing force increases. In combination, the frictional force of the film member 26b is increased.

As a result, the surface of the film member 26b microscopically slides between the peripheral sealing surfaces 22b and 23b on the case side, and saw-tooth-like frictional fluctuation due to adhesion, a so-called slip stick phenomenon (see the X portion in FIG. 13). ) Occurs, and the film member 26b generates chattering sound.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to prevent an abnormal sound (a clicking sound and a chattering sound) from being generated by a film member in an air passage switching device using a film type sliding door. .

[0020]

In order to achieve the above object, according to the first aspect of the present invention, the air passages (22, 2) are provided.
3) Forming a grid (22a, 23a) for partitioning the opening surface into a plurality of sections at 3), and arranging the grids (22a, 23a) in parallel with the sliding direction (a) of the slide door (26), Includes a film member (26b), a door substrate (26a) supporting the film member (26b),
The film member (26b) is connected to the peripheral sealing surfaces (22b, 23b) of the air passages (22, 23) and the grid (22a, 2b).
Elastic means (26) for pressing the end face of 3a) by an elastic reaction force.
e), the end surface of the grid (22a, 23a) at the center of the air passage (22, 23) and the door substrate (26a) in the direction (W) orthogonal to the sliding direction (a) of the sliding door (26). L1 and the air passage (22, 2
When the distance between the peripheral sealing surfaces (22b, 23b) and the door substrate (26a) at the end of 3) is L2, L1 ≧
L2 is set.

As a result, the film member 26b is not excessively pressed in the vicinity of the lattices (22a, 23a), so that it is possible to avoid the occurrence of concave permanent distortion in the film member (26b). Poco noise due to irregular deformation of the permanent distortion portion can be prevented.

Further, as described above, since the generation of the popping noise can be prevented by setting the interval L1 ≧ L2, the above-described FIG.
It is not necessary to increase the elastic member (26e) and increase the pressing force against the film member (26b) as in 2, 13. As a result, the film member (26b), the peripheral sealing surfaces (22b, 23b) and the grids (22a, 23)
Since the frictional force with the end face a) can be reduced, the slip stick phenomenon of the film member (26b) caused by the increase in the frictional force can be prevented, and the chattering sound of the film member (26b) can be prevented. Further, the door operating force can be reduced by reducing the frictional force.

According to a second aspect of the present invention, in the first aspect, the two intervals are set so as to satisfy a relationship of L1> L2.
The maximum value of the interval (L1) is set in a range in which the amount of elastic compression when the elastic means (26e) is assembled is 0 or more.

By setting the relationship of L1> L2 as described above, the frictional force of the film member (26b) can be reduced, and the function and effect according to the first aspect can be more effectively exhibited, and the maximum distance (L1) can be obtained. By limiting the value to a range in which the amount of elastic compression when the elastic means (26e) is assembled is 0 or more, the effect of preventing air leakage can be further enhanced (see the experimental results in FIG. 7 described later).

According to a third aspect of the present invention, in the first or second aspect, the elastic means (26e) has an elongated shape extending parallel to the sliding direction (a) of the slide door (26). The elastic means (26e) is connected to the air passage (2
(2, 23) and the end faces of the lattices (22a, 23a).

According to this, as shown in FIGS. 12 and 13 described above, in the direction (W) orthogonal to the sliding direction (a) of the sliding door (26), the grid (22a, 23)
a) and the peripheral sealing surface at the end of the air passage (22b, 23b)
In the middle part of the passage opening (that is, in the middle of the passage opening surface),
Since the elastic member (26e) is not provided, the frictional force of the film member (26b) can be reduced, and as a result, chattering of the film member (26b) due to the increase in the frictional force can be prevented. At the same time, the door operating force can be reduced by reducing the frictional force.

According to the fourth aspect of the present invention, the air passage (2)
2 and 23), a grid (22a, 23) that divides the opening surface into a plurality.
a) and the grids (22a, 23a) are arranged parallel to the sliding direction (a) of the sliding door (26),
A film member (26b) is provided on the sliding door (26).
And a door substrate (26) supporting the film member (26b).
a) and the film member (26b) through the air passages (22, 2).
3) Peripheral sealing surfaces (22b, 23b) and grid (2)
2a, 23a) is provided with an elastic means (26e) for pressing by an elastic reaction force on the end face, and the elastic means (26e) has an elongated shape extending parallel to the sliding direction (a) of the slide door (26); The elongated elastic means (26e) is connected to the air passage (2).
(2, 23) and the end faces of the lattices (22a, 23a).

According to this, the elastic member (26e) is provided at an intermediate portion between the lattice (22a, 23a) at the center of the air passage and the peripheral sealing surfaces (22b, 23b) at the end of the air passage, as in the third aspect. Are not arranged, the film member (26
b) The frictional force can be reduced, and as a result, chattering of the film member (26b) caused by the increase in the frictional force can be prevented,
At the same time, the door operating force can be reduced by reducing the frictional force.

In the fifth aspect of the present invention, the air passage (2
(2, 23, 230) with a sliding door (26) that slides along the opening surface of the air passage (22, 23, 230).
An air passage switching device for opening and closing the air passage by a sliding door (26). The air passage switching device opens and closes the peripheral seal surface (22b, 23b, 120f to 120i) of the air passage (22, 23, 230). An opening (26c) provided on a slide door (26) with a film member (26b) for closing the film member 230) and a door substrate (26a) for supporting the film member (26b), and applying a wind pressure to the film member (26b). ) Is provided on the door substrate (26a), and an elastic member (26e) is fixed to the surface of the film member (26b) on the door substrate (26a) side.

According to this, the rigidity of the film member (26b) can be increased by fixing the elastic means (26e). Therefore, even if concave distortion occurs in the film member (26b), irregular deformation (reversal) of the concave distortion portion is prevented by increasing the rigidity of the film member (26b),
The click sound of the film member (26b) can be prevented.

Further, the film member (26b) hardly vibrates due to the improvement in rigidity of the film member (26b).
The chattering sound of the film member (26b) can also be suppressed.

As in the invention of the sixth aspect, the fifth aspect
The slide door (26) may be formed in a substantially flat plate shape so as to slide linearly along the opening surface of the air passage (22, 23, 230).

[0033] As in the invention of claim 7, claim 6
The elastic means (26e) may have an elongated shape extending parallel to the sliding direction (a) of the sliding door (26), or the elastic means (2) according to claim 6 as in the invention of claim 8.
6e) may have a plate shape corresponding to the shape of the film member (26b).

In particular, when the elastic means (26e) is formed in a plate shape corresponding to the shape of the film member (26b), the elastic means (26e) is fixed to the film member (26b). The area is greatly increased, and the rigidity of the film member (26b) is increased → the film member (26b)
Can be further improved.

According to the ninth aspect of the present invention, in any one of the fifth to eighth aspects, the elastic member (26e) when the slide door (26) is assembled into the air passages (22, 23, 230). ), The elastic compression amount is set in a range of 0 ± 1.5 mm.

In claims 5 to 8, the sliding frictional force of the film member (26b) is excessively increased, and the chattering sound of the film member (26b) is likely to occur.
However, according to the ninth aspect of the present invention, the elastic means (26
By limiting the amount of elastic compression at the time of assembling e) to within +1.5 mm, it is possible to suppress an increase in sliding frictional force and to suppress chattering of the film member (26b). Also,
The amount of elastic compression when the elastic means (26e) is assembled is -1.
Restricted to within 5 mm, ie, film member (26b)
By limiting the gap between the parts to within 1.5 mm, the air leakage level can be suppressed to a level that does not hinder practical use.

According to the tenth aspect, in the fifth aspect, the slide door (26) has a substantially semi-cylindrical shape, and rotates along the opening surfaces of the air passages (22, 23, 230). Can be configured to exercise.

According to the eleventh aspect, in the tenth aspect,
In the above, the elastic member (26) is attached to the film member (26b).
e) with the two members (26b, 26e) fixed.
Is punched into a predetermined shape.
b, 26e) is formed by heating and bending into a substantially semi-cylindrical shape.

Thus, when manufacturing the substantially semi-cylindrical slide door (26), the film member (26b)
The elastic member (26e) and the elastic member (26e) are integrated in advance, and thereafter, the two members can be integrally punched and bent to form the slide door (26) efficiently.

According to the twelfth aspect, in the fifth aspect,
In any one of 10 and 11, the sliding door (2
6) are communication ports (26n, 26n) that penetrate both the film member (26b) and the elastic member (26e) and allow air to pass therethrough.
p), and the elastic member (26e) is fixed only to the periphery of the communication port (26n, 26p).

Thus, the portion of the film member (26b), around the communication ports (26n, 26p), where the rigidity is reduced, is reinforced by fixing the elastic member (26e), so that the rigidity can be prevented from being reduced.

According to the thirteenth aspect, in the twelfth aspect,
, A step portion (26q) is integrally formed at an edge portion of the communication port (26n, 26p).

Thus, the periphery of the communication port (26n, 26p) is reinforced by integral molding of the stepped portion (26q), so that a reduction in rigidity can be avoided.

According to the fourteenth aspect, in the fifth aspect,
In any one of 10, 11, 12, and 13, when the slide door (26) is installed in the air passages (22, 23, 230), the elastic member (26e) is elastically compressed, and Due to the elastic reaction force of the member (26e), the film member (26b) turns into the peripheral sealing surfaces (22b, 23b, 120f to 120i) of the air passages (22, 23, 230).
Characterized by being pressed against

Thus, the vibration of the film member (26b) can be more reliably suppressed, and the effect of suppressing chatter can be further improved.

According to the fifteenth aspect, in the fifth aspect,
In any one of 10, 11, 12, and 13, when the sliding door (26) is installed in the air passages (22, 23, 230), the elastic member (26e) is in a range where the elastic member (26e) is not elastically compressed. The thickness of the elastic member (26e) is set.

According to this, the elastic reaction force of the elastic member (26e) does not act on the film member (26b).
The peripheral sealing surface (22) of the air passage (22, 23, 230)
b, 23b, 120f to 120i) to the film member (2
6b) is not forcibly pressed by the elastic reaction force. As a result, the sliding frictional force of the film member (26b) decreases, and the operating force of the slide door (26) can be reduced.

According to the invention of claim 16, in any one of claims 1 to 15, the film member (26)
b) a film base material layer (50), and a low surface provided on a surface of the film base material layer (50) which slides on the peripheral sealing surfaces (22b, 23b) and the end surfaces of the grids (22a, 23a). And a friction material layer (51).

According to this, the frictional force of the film member (26b) is further reduced by the low friction material layer (51) located on the sliding side surface, and the chattering sound of the film member (26b) is more effectively generated. Can be prevented.

According to a seventeenth aspect of the present invention, there is provided the air passage switching device according to any one of the first to sixteenth aspects, wherein a plurality of air passages for air flowing toward the vehicle interior by the slide door (26) are provided. It is characterized by a vehicle air conditioner that opens and closes (22, 23).

Since the working space of the sliding door (26) can be greatly reduced as compared with a normal rotary plate door, the present invention is suitably implemented as an air passage switching device in an air conditioner for a vehicle, which needs strong compactness. it can.

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

[0053]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 to 7 show a first embodiment of the present invention. The vehicle air conditioner of this embodiment has a large cabin such as a one-box vehicle. The present invention relates to a rear seat air conditioner for air conditioning a rear seat side space in a vehicle.

First, in FIG. 1, reference numeral 10 denotes an air conditioner for a rear seat of a vehicle, and the main body of the air conditioner 10 is installed between the outer wall of the vehicle and the inner wall of the vehicle at a position near the floor at the rear 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 is provided with a centrifugal electric blower 13. The blower 13 includes a centrifugal fan 14 and a fan driving motor 14a, and the centrifugal fan 14 is rotatably disposed in 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 constituting 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 air flow path is formed so as to extend upward from below by means of 0. An evaporator 17 serving as a heat exchanger for cooling conditioned air is provided in a case 120 of the air conditioner unit 12.
And a heater core 18 which is a heating heat exchanger located downstream of the evaporator 17 in the air. 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 by the duct 16 and is then introduced into the case 120 of the air conditioner unit 12. The flow of the blown air introduced into the case 120 is changed from the lower side to the upper side, and the evaporator 17 and the heater core 18 are changed.
Pass through.

The evaporator 17 includes a compressor (not shown)
It constitutes a well-known refrigeration cycle connected to a condenser, a liquid receiver, and a pressure reducer by piping, and cools and dehumidifies the air by absorbing the latent heat of evaporation of the refrigerant from the air in the case 120. The heater co 18 heats the cold air cooled by the evaporator 17 using hot water (cooling water) from an automobile engine as a heat source.

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
Inside 0, a cool air bypass passage 20 through which air (cool air) passing through the evaporator 17 flows bypassing the heater core 18 is provided. This cold air bypass passage 20
It is opened and closed by the cool air bypass door 21.

In the case 120 of the air conditioner unit 12, a face opening 22 and a foot opening 23 are formed at a downstream portion (upper portion of the vehicle) of the heater core 18. The face opening 22 is formed in the heater core 1.
The air-conditioning air, the temperature of which is adjusted in step 8, is directed toward the upper body of the rear passenger, and a rear face air outlet (not shown) for the rear seat of the vehicle via a face duct 24.
It is connected to.

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. Is connected to a rear seat foot outlet (not shown) located at the foot portion of the vehicle.

The face opening 22 and the foot opening 23 constitute an air passage according to the present invention, and are opened and closed by a slide door 26, whereby a face mode and a bi-level mode which are well known as a blow-out mode are provided. , The foot mode can be switched.

Next, a specific example of the slide door 26 will be described with reference to FIGS. The overall shape of the slide door 26 is substantially a rectangular flat plate.
Slides linearly in the direction of the arrow a shown in the figure (that is, in the front-rear direction of the vehicle) along the air passage opening surfaces of the face opening 22 and the foot opening 23 provided in the case 120 of the air conditioner unit 12. Things. Note that FIG.
Is a vehicle width (left-right) direction.

As shown in FIGS. 4 and 5, the sliding door 2
6 includes a door substrate 26a and a film member 26b supported by the door substrate 26a. Door board 26a
Is formed in a cross-shaped flat frame shape (FIG. 5) using a resin such as polypropylene. A film member 26b is mounted on the upper surface (the surface on the side of the openings 22, 23) of the door substrate 26a so as to cover the four openings 26c of the door substrate 26a. The film member 26b is used to close the openings 22 and 23 so as to close the openings 2 and 23.
It has an area larger than 2,23.

The film member 26b is formed of a thin resin material having a certain degree of flexibility, a small frictional resistance, and no air permeability. Specifically, the film member 26b is made of, for example, a PET (polyethylene terephthalate) film having a thickness of about 188 μm. The door board 26a is connected to the case 120 by the four openings 26c.
The internal wind pressure can be applied to the film member 26b.

Next, a specific mounting structure of the film member 26b will be described. As shown in FIG. 5, the film member 26b is formed into a shape having bent portions 26f at both ends in the door sliding direction a. A plurality of elongated mounting holes 26g are formed in 26f. On the other hand, on both ends of the door substrate 26a, the same number of mounting pins 26h as the mounting holes 26g are integrally formed so as to protrude. 26
h by heat caulking the tip of the film member 2
6b is attached to the door substrate 26a. In FIG. 4, reference numeral 26i denotes an enlarged portion of the distal end portion of the mounting pin 26h after heat caulking.

Further, two guide pins 26j are integrally formed on two side surfaces of the door substrate 26a on both left and right sides in the direction W orthogonal to the door sliding direction a. The guide pin 26j is connected to the slide door 26 in the arrow direction a.
This is to guide the sliding to. That is, in the case 120 of the air conditioner unit 12, on the inner wall surface below the face opening 22 and the foot opening 23,
Horizontal guide groove 2 extending parallel to door sliding direction a
7 and 28 (FIGS. 2 and 3) are provided on both left and right sides, and guide pins 26j are slidably fitted in the guide grooves 27 and 28, respectively. For this reason, the slide door 26 is slidably held by the case 120 by a fitting portion between the guide pin 26j and the guide grooves 27 and 28.

Further, a linear gear (rack) 26k extending in parallel with the door sliding direction a is provided integrally with the door substrate 26a on the lower surface portion (the surface on the side of the heater core 18) of the door substrate 26a. As shown in FIG. 5, the linear gear 26k is formed on the lower surface of the central plate surface 26d of the lower surface of the door substrate 26a.

On the other hand, as shown in FIG. 2, a rotary shaft 29 is provided between the face opening 22 and the foot opening 23 at a position immediately below the slide door 26 in the case 120. They are arranged in a direction orthogonal to the moving direction a. The rotating shaft 29 is made of resin, and the case 1
20 is rotatably supported by bearing holes (not shown) in the wall surface. Of the rotating shaft 29, the linear gear 26k
A circular connecting gear (pinion) 30 is integrally formed of resin at an intermediate portion corresponding to. The connecting gear 30 is located in the case 120 and meshes with the linear gear 26k.

One end of the rotating shaft 29 is connected to the case 120.
Of the drive side gear 31
Has been arranged. The drive gear 31 is also formed integrally with the rotary shaft 29 by resin. As shown in FIG. 2, the servo motor 32 constituting the door driving device
, And a fan gear 34 is connected to the output shaft 33. The fan gear 34 is the same as the driving gear 3 described above.
Meshing with one. Thus, the rotation of the servomotor 32 is transmitted to the rotating shaft 29 via the output shaft 33, the fan gear 34, and the driving gear 31. Further, the rotation of the rotating shaft 29 is converted into a linear motion of the slide door 26 by the engagement between the connecting gear 30 and the linear gear 26k.

In this embodiment, the rotation shaft 21a of the cool air bypass door 21 for opening and closing the cool air bypass passage 20 is connected to the pin portion 34a of the fan gear 34 via links 35 and 36, and the rotation of the fan gear 34 The cold air bypass door 21 is rotated in conjunction with the position.

The face opening 22 and the foot opening 23 of the case 120 of the air conditioner unit 12 have a substantially rectangular shape as shown in FIG. 3, and lattices 22a and 23a are integrally formed at the center thereof. . This grid 2
2a and 23a are sliding (moving) directions a of the sliding door 26.
And the opening surfaces of the openings 22 and 23 are divided into two.

The cross section of the door substrate 26a is formed by the cross-section of the peripheral sealing surfaces 22b, 2b of the openings 22 and 23.
3b and a plate surface 26d (FIG. 5) extending in parallel with the door sliding direction a, facing the end surfaces of the lattices 22a and 23a, and an elastic member 26e is fixed to the plate surface 26d by means such as adhesion. . The elastic member 26e has an elongated shape with a rectangular cross section extending with a width slightly smaller than the width of the plate surface 26d.

The thickness t (FIG. 5) of the elastic member 26e in the free state is determined by the door substrate 26a in the state where the slide door 26 is assembled in the case 120, the lattices 22a and 23a on the case 120 side, and the peripheral sealing surface. It is set to be larger by a predetermined amount than the intervals L1 and L2 (FIG. 6) between the gaps 22b and 23b. Thus, when the slide door 26 is assembled in the case 120, the elastic member 26e can be elastically compressed by a predetermined amount in the thickness direction t.

As a result, the film member 26b can be constantly pressed against the peripheral sealing surfaces 22b, 23b of both openings 22, 23 and the end surfaces of the lattices 22a, 23a with a predetermined force by the elastic reaction force of the elastic member 26e.

When the air conditioner is activated, the film member 26b is moved by the wind pressure applied through the opening 26c of the door substrate 26a, so that the peripheral sealing surface 22b of the opening 22 or 23 is closed.
The opening 22 or 23 can be reliably closed by being pressed against the end faces of the lattice 23b and the lattices 22a, 23a.

As described above, since the film member 26b performs a sealing function, the elastic member 26e is
, And does not directly slide on the surface on the case 120 side, so that it is not necessary to particularly enhance the durability.
Therefore, if the elastic member 26e is an elastic material, an inexpensive material can be used. Specifically, a sponge-like porous resin foam material can be used as the elastic member 26e.

The case 120 for forming the openings 22 and 23 has the dividing plane D set along the lattices 22a and 23a at a position before the lattices 22a and 23a as described above.
The left and right divided case bodies 12 divided into two by (FIG. 3).
1 and 122.

The sectional shape of each of the divided case bodies 121 and 122 (the sectional shape in the direction W in FIG. 3) is a U-shape. A phenomenon occurs in which a portion near the division surface D of 122 falls inside the case. Therefore, in the present embodiment, in consideration of this point, each divided case body 121, 122
In molding, the molding die is designed so that the U-shaped cross-sectional shape of each of the divided case bodies 121 and 122 slightly spreads outward by more than 90 °, so that “sink” of the material after resin molding occurs. Also, the intervals L1 and L2 shown in FIG.
The relationship of 2 is maintained.

That is, FIG. 6 is a sectional view taken along the line AA of FIG. 3, and the distance L1 in the direction W orthogonal to the sliding direction a of the door is determined by the lattices 22a, 23a located at the center of the openings 22, 23.
Is the distance between the end surface of the door substrate 26a and the upper surface of the door substrate 26a.
Reference numeral 2 denotes a distance between the peripheral sealing surfaces 22b and 23b at the ends of the openings 22 and 23 in the W direction and the upper surface of the door substrate 26a. In the present embodiment, each of the divided case bodies 121 and A U-shaped cross-sectional shape of 122 is formed.

As a specific design example, three elastic members 26
e in a free state, the plate thickness t = 5 mm, and the amount of elastic compression (crushing allowance) when assembling the elastic member 26e located at the interval L1 at the center in the W direction is 0.6 mm to 1. 0m
m, the peripheral sealing surface 22b at the end in the W direction,
L1 and L2 are set within a predetermined range of 4 mm or less so that the amount of elastic compression (amount of crushing) when assembling the elastic member 26e located at the portion 23b is 1.1 mm to 1.5 mm.

Next, the operation of the above construction will be described. By selecting the rotation direction and the rotation amount of the output shaft 33 of the servomotor 32, the arrow a of the slide door 26 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,
Face, bilevel, and foot modes can be selected as desired. For example, when the face mode is set, the cool air bypass door 21 opens the cool air bypass passage 20 in conjunction with the face mode. Further, in the bi-level mode, the cold air bypass door 21 may be opened at a predetermined opening in order to make the face blowing temperature lower than the foot blowing temperature.

According to the present embodiment, the following advantages are obtained in the switching operation of the air passage by the slide door 26.

The sliding door 26 is provided in the openings 22 and 23.
22 extending in parallel with the sliding direction a of the
With the grids 22a and 23a, bulging deformation of the central portion of the film member 26b can be restricted by the grids 22a and 23a.

Peripheral sealing surface 22 of openings 22 and 23
b, 23b and the end faces of the lattices 22a, 23a, the film member 26b is constantly pressed by the elastic reaction force of the elastic member 26e.
6b are peripheral sealing surfaces 22b, 23b and a grid 22a,
The phenomenon of colliding with 23a is eliminated.

Further, in addition to the above, in the direction W orthogonal to the door sliding direction a, the distance L1 between the end surfaces of the lattices 22a and 23a located at the center of the openings 22 and 23 and the upper surface of the door substrate 26a is defined as: Since the distance between the peripheral sealing surfaces 22b and 23b at the ends of the openings 22 and 23 in the W direction and the upper surface of the door substrate 26a is larger than the distance L2 (L1> L2), the portions near the lattices 22a and 23a ( Division surface D
(In the vicinity of), the film member 26b is not excessively strongly pressed.

For this reason, it is possible to avoid the occurrence of concave permanent distortion in the film member 26b, and it is possible to prevent the popping noise due to the irregular deformation of the concave permanent distortion portion.

According to the study of the present inventors, the distance L1 at the center in the W direction and the distance L2 at the end in the W direction are L1 = L
It has been confirmed that, even in the relation of 2, it is possible to avoid excessive press deformation of the film member 26b and to prevent a click noise. Therefore, the intervals L1 and L2 may be set in a relationship of L1 ≧ L2.

As described above, since the click noise can be prevented by setting the interval L1 ≧ L2, the number of the elastic members 26e is increased from three to five to prevent the click noise as shown in FIG. It is not necessary to increase the pressing force against the film member 26b. As a result, the frictional force between the film member 26b and the inner wall surface of the case can be reduced, so that the slip stick phenomenon of the film member 26b caused by the increase in the frictional force can be prevented, and the chattering sound of the film member 26b can be prevented.

More specifically, as shown in FIG. 6, the elastic members correspond only to the portions of the lattices 22a and 23a at the center of the opening and the portions of the peripheral sealing surfaces 22b and 23b at the end in the direction of the opening W. In the case where three 26e are arranged, the average value of the surface pressure between the film member 26b and the inner wall surface of the case is set to about 1.5 g / cm by setting the elastic compression amount (crushing allowance).
It can be suppressed to ² and chattering noise can be prevented.

On the other hand, when the number of elastic members 26e is increased from three to five as shown in FIG. 12, the average value of the surface pressure between the film member 26b and the inner wall surface of the case is approximately 4.
5 g / cm ² , which causes the film member 26
A chattering sound is generated due to the increase in the frictional force b.

Next, FIG. 7 shows a plate thickness t = 5 mm in a free state.
In the case where the elastic member 26e is used, the crushing allowance at the time of assembling the elastic member 26e located at the center in the W direction, the thickness dimension at the time of assembling the member 26e, and the relationship between the amount of air leakage are shown. This was created based on experiments performed by the present inventors. Here, the time when the elastic member 26e is assembled refers to a state in which the slide door 26 is assembled in the case 120.

FIG. 7A shows the amount of air leaking to the face opening 22 in the foot mode, and FIG. 7B shows the amount of air leaking to the foot opening 23 in the face mode.

As an experimental condition, the voltage applied to the drive motor 14a of the blower 13 in the foot mode was set to the maximum voltage (12
V), the blower 13 is operated at the maximum speed (Hi). Similarly, even in the face mode, the voltage applied to the drive motor 14a of the blower 13 is set to the maximum voltage (13.5 V).
, The blower 13 is operated at the maximum speed (Hi).

In FIG. 3, the opening areas of the face opening 22 and the foot opening 23 are shown to be approximately the same for the sake of simplicity of illustration. The opening area of the foot opening 23
Is designed to be about 30% larger than the opening area of the opening. Therefore, the amount of air leakage (1) to the face opening 22 side in the foot mode exceeds the amount of air leakage (2) to the foot opening 23 side in the face mode.

As understood from the characteristics shown in FIG.
By setting the crushing allowance at the time of assembling the elastic member 26e located at the center in the W direction to 0 or more, the amount of air leakage (1) in the foot mode is reduced to the maximum value of the amount of air leakage (2) in the face mode. Q ₁ can be suppressed to a small amount of within. From this, it can be seen that it is preferable to limit the maximum value of the interval L1 at the center in the W direction to a range where the elastic member squeeze allowance is equal to or greater than 0 in order to suppress the amount of wind leakage.

The film member 26b can basically perform a sealing function by being pressed against the peripheral sealing surfaces 22b and 23b by wind pressure. Therefore, when the elastic member 26e located at the center in the W direction is assembled. Area where the crushing allowance is negative (the elastic member 26e and the film member 26b
Even if there is a gap between them), the amount of wind leakage is the target amount of leakage Q
It can be suppressed to a value sufficiently smaller than ₀ .

(Second Embodiment) In the first embodiment, the case where the film member 26b is constituted by a PET (polyethylene terephthalate) film alone has been described. In the second embodiment, as shown in FIG.
6b has a two-layer structure of a film base material layer 50 and a low friction material layer 51.

That is, in the film base material layer 50, the low friction material layer 51 is integrally provided on the surface that slides on the peripheral sealing surfaces 22b and 23b on the case 120 side and the end surfaces of the lattices 22a and 23a.

Here, the film base material layer 50 has the same thickness (about 188 μm) as the film member 26b of the first embodiment, and specific materials are PET (polyethylene terephthalate) and PPS (polyphenylene sulfide). ), PEN (polyethylene naphthalate) and the like.

The thickness of the low friction material layer 51 is 1.2 μm.
As the material, a resin having a lower coefficient of friction than the film base material layer 50 and having heat resistance to withstand sliding friction heat is preferable, and specifically, a silicon resin, a fluorine resin, or the like is preferable. .

According to the second embodiment, the film member 26
By providing the low friction material layer 51 on the sliding side surface of b,
The frictional force between the film member 26b and the inner wall surface of the case is reduced, so that the chattering sound of the film member 26b can be more effectively prevented.

(Third Embodiment) FIG. 9 shows a third embodiment, in which an air conditioner 12 for a front seat disposed on an instrument panel at a front portion of a vehicle compartment controls the temperature of air blown into the vehicle compartment. As a method, warm air passing through the heater core 18 and the heater core 18
The air mix method of adjusting the ratio of the flow rate of the cool air passing through the cool air bypass passage 20 '. And
The slide door 2 is used as the door means of the air mix system.
6 is used.

The specific configuration and drive mechanism of the slide door 26 may be the same as in the first embodiment, and a description thereof will be omitted. In FIG. 9, 38 is a center face opening, 39 is a side face opening, 40 is a defroster opening, 41 is a foot opening, 42 is a passage to the center face opening 38, and a defroster opening 40. And a first mode door that opens and closes a passage to the foot opening 41. A second mode door 43 opens and closes a passage to the defroster opening 40 and a passage to the foot opening 41.

(Fourth Embodiment) FIG. 14 shows a fourth embodiment. In the first embodiment, the plate surface 2 of the door substrate 26a is used.
An elastic member 26e having an elongated shape with a rectangular cross section is fixed to 6d by bonding or the like, but in the fourth embodiment, this elastic member 26e is not a door substrate 26a but a film member 2e.
6b is fixed to the inner surface of the base 6b by bonding or the like.

In this manner, the elastic member 26e is
When the film member 26b is fixed to the film member 26b instead of a, the rigidity of the elastic member 26e and the rigidity of the adhesive are added to the rigidity of the film member 26b alone, so that the rigidity of the entire film member 26b including the elastic member 26e increases.

Therefore, even if a concave distortion portion occurs in the film member 26b, the inversion of the concave distortion portion can be prevented by increasing the rigidity of the entire film member 26b. As a result, it is possible to prevent the generation of an abnormal noise (pock noise) due to the inversion of the concave distortion portion.

In the first embodiment, the distance L1 between the center in the W direction and the distance L2 between the ends in the W direction are defined as L1 ≧ L2.
However, according to the fourth embodiment, as described above, the inversion of the concave distortion portion is prevented by increasing the rigidity of the entire film member 26b, and the abnormal sound is generated. Since it is possible to prevent the generation of a click sound,
It is not always necessary to set the interval of 1 ≧ L2. Therefore, according to the fourth embodiment, there is no need to increase the molding accuracy of the case 120 in order to define the interval L1 and the interval L2, and there is an advantage that the molding cost of the case 120 can be reduced.

(Fifth Embodiment) FIG. 15 shows a fifth embodiment, which is a modification of the fourth embodiment. The shape of the elastic member 26e fixed to the film member 26b side is changed to the rectangular shape of the film member 26b. Into a rectangular plate shape corresponding to
The elastic member 26e is entirely fixed to the inner surface of the film member 26b by bonding or the like.

As described above, since the elastic member 26e having a rectangular plate shape is entirely fixed to the film member 26b, the rigidity of the entire film member 26b is higher than that of the fourth embodiment. Sound) can be further enhanced.

Therefore, in the fifth embodiment, the elastic member 26
e can be made thinner than in the fourth embodiment. For example, in the fourth embodiment, the thickness t =
In the fifth embodiment, the thickness t of the elastic member 26e in the free state may be 4 mm.

In the fourth and fifth embodiments, the rigidity of the film member 26b is increased by bonding the elastic member 26e to the inner surface of the film member 26b by means such as adhesion or the like. As a result, the sliding frictional force between the film member 26b and the case 120 increases, so that the chattering sound of the film member 26b due to the slip stick phenomenon easily occurs.

In the fourth and fifth embodiments, the elastic compression amount (crushing allowance) at the time of assembling the elastic member 26e is 0 m.
m, specifically in the range of 0 ± 1.5 mm.
That is, by limiting the amount of elastic compression (crushing allowance) within +1.5 mm, the film member 26b and the case 12
0 to limit the increase of the sliding frictional force between
6b can be suppressed.

It should be noted that the amount of elastic compression (crushing allowance) being on the negative side depends on the elastic member 26e and the door substrate 2 as described above.
6a, a gap is generated between them. As can be understood from FIG. 7, if the amount of elastic compression (crushing allowance) is within -1.5 mm, the amount of air leakage is reduced to a minute level that does not hinder practical use. Can be suppressed.

(Sixth Embodiment) FIGS. 16 and 17 show a sixth embodiment. Similar to the fourth and fifth embodiments, the elastic member 26e is not a door substrate 26a but a film member 26b.
Is fixed to the inner side surface of the device by means such as adhesion.

However, in the fourth and fifth embodiments, the overall shape of the slide door 26 is a flat plate, and the slide door 26 is linearly slid (reciprocated) along the opening surface of the air passage. In the sixth embodiment, the slide door 26 has a semi-cylindrical shape and is rotated. Therefore, the slide door 26 according to the sixth embodiment can be said to be a rotary (rotary) door.

FIG. 16 shows an air passage switching device according to the sixth embodiment, and shows an example in which the present invention is applied to an air outlet mode switching device in a vehicle front seat air conditioner. The blowout mode switching device of FIG. 16 is mounted in the direction of the arrow shown in the drawing with respect to the up, down, front and rear directions of the vehicle. Air-conditioned air that is blown by a blower (not shown) and whose temperature is adjusted by a heater core (not shown) flows from the vehicle lower side to the upper slide door 26 as indicated by an arrow b.

Here, the sliding door 26 has a semi-cylindrical door board 26a formed in a semi-cylindrical shape extending in a direction perpendicular to the paper surface of FIG. 16 (vehicle left-right direction), and an outer periphery of the semi-cylindrical door board 26a. And a film member 26b which is similarly bent into a semi-cylindrical shape on the side. At both ends in the circumferential direction of the door substrate 26a, a large number of mounting pins 26h are integrally provided at predetermined intervals in a direction perpendicular to the paper surface of FIG. 16, and the mounting pins 26h are used to form both ends of the film member 26b in the circumferential direction. By fitting and holding the mounting hole,
The film member 26b is assembled to the door substrate 26a.

The door substrate 26a is provided with an opening 26c divided into a plurality in the circumferential direction.
Thus, the wind pressure of the conditioned air b acts on the film member 26b.

The door board 26a of the slide door 26 includes
A rotating shaft 26m is integrally provided at both ends in the axial direction (perpendicular to the plane of FIG. 16), and the slide door 26 is rotatably disposed in the resin case 120 of the vehicle air conditioner by the rotating shaft 26m. . Therefore, by applying a rotating operation force to the rotating shaft 26m from outside, the sliding door 26
Rotates in the direction of arrow c in FIG. 16 (vehicle longitudinal direction).

On the other hand, in the case 120, the upper left portion (upper portion on the rear side of the vehicle) in FIG.
Individual outlet openings 22, 23, 230
Are provided on the outer peripheral side of the rotation region. The openings 22, 23, 23 are formed by the walls 120a to 120e of the case 120.
0 is partitioned and formed on the case-side wall portions 120a to 120a.
Opening peripheral sealing surfaces 120f to 120i to which the film member 26b abuts are formed at the tip of 0e. The peripheral sealing surfaces 120f to 120i are located on a predetermined radius of curvature centered on the rotation center of the slide door 26.

[0125] The blow-out opening 22 located in the middle of the rotation direction c of the slide door 26 is a face opening that blows air toward the upper body of the occupant. The blowing opening 23 is a foot opening for blowing air toward the lower body of the occupant. In the rotation direction c of the slide door 26,
The blowout opening 230 located closest to the front of the vehicle is a defroster opening that blows out conditioned air toward the inner surface of the windshield of the vehicle.

FIG. 17 is a perspective view of the film member 26b alone before being assembled to the door substrate 26a. Similar to the fifth embodiment (FIG. 15), a rectangular film member 26b has a rectangular An elastic member 26e having a plate shape is entirely adhered in advance by bonding or the like. Thereafter, the outer shapes of both the film member 26b and the elastic member 26e are punched into a predetermined size, and at the same time, the communication ports 26n and
6p is punched. The communication ports 26n and 26p are air passage ports that penetrate both members 26b and 26e.

Here, the film member 26b is a PET film having a thickness of about 188 μm as in each of the above embodiments, and the elastic member 26e is made of a porous resin foam material as in each of the above embodiments. Specifically, for example, an ether-based resin foam material can be used.

The flat film member 26b and the elastic member 26e shown in FIG. 17 are heated to a predetermined temperature after the above-mentioned punching, and are formed into a semi-cylindrical shape along the outer peripheral surface of the semi-cylindrical door substrate 26a. It is heated and bent. Here, the two members 26b and 26e are bent and formed such that the elastic member 26e is located inside and the long side direction of FIG. 17 is a semi-cylindrical circumferential direction. The semi-cylindrical shape formed by the heat bending is maintained by the physical properties of the film member 26b even after the temperature is lowered to room temperature.

Thereafter, the semi-cylindrical film member 26b and the elastic member 26e are assembled on the outer peripheral surface of the door substrate 26a, and the slide door 26 is assembled as a single unit. Specifically, in the long side direction of the film member in FIG. 17, the end on the communication port 26n side is attached to the mounting pin 26h on the left side of FIG. 16 of the door board 26a, and the end on the communication port 26p side is a view of the door board 26a. 16 Attach to the right mounting pin 26h.

Thereafter, as shown in FIG. 16, the slide door 26 is rotatably assembled into the case 120 by the rotation shaft 26m. In a state where the slide door is assembled into the case, the elastic member 26e is elastically compressed, and the film member 26b is resiliently repelled to cause the film peripheral member 26b to have the opening peripheral sealing surfaces 120f to 120f.
The thickness of the elastic member 26e is set so as to correspond to 120i. The thickness of the elastic member 26e is, for example, 4 to 5 mm.
Range.

Next, the operation of the sixth embodiment will be described.
In FIG. 16, the slide door 26 is rotated at a position where the communication port 26n of the film member 26b overlaps the face opening 22. In this state, since the foot opening 23 and the defroster opening 230 are closed by the plate surface of the film member 26b and only the face opening 22 is opened, the conditioned air b inside the slide door 26 flows into the face opening 22. , Face mode. The film member 26
At this time, the communication port 26p of b is closed by the case wall surface on the peripheral sealing surface 120i side.

By rotating the slide door 26 in the direction of arrow c in FIG. 16, in addition to the face mode,
By selecting the opening state of the foot opening 23 or the defroster opening 230, a blowing mode such as a foot mode or a defroster mode can be selected.

By the way, the film type slide door 26
The noise generated by the rotation of the film member includes chattering sound caused by the vibration of the film member 26b,
There is a reversal sound (pok sound) generated by deformation due to insufficient rigidity of the.

More specifically, the former chatter sound will be described. When the conditioned air b is being blown toward the slide door 26 during the air conditioning operation, the outer peripheral surface of the film member 26b and the peripheral sealing surface 120f to the case side are formed. Air flows in a minute gap between the air flow and the 120 h. When the rigidity of the film member 26b is low, the film member 26b vibrates due to the air flow in the minute gap and intermittently contacts the peripheral sealing surfaces 120f to 120h on the case side to generate chatter sound. .

It should be noted that, among the peripheral sealing surfaces on the case side, the sealing surface 120i comes into contact with the portion of the film member 26b having high rigidity, that is, the right end portion in FIG. 17 where the communication ports 26n and 26p are not formed. Film member 26
Chattering noise due to the vibration of b is not easily generated.

The inverted sound (pok sound) of the latter is mainly
This is due to the phenomenon of falling into the inside of the divided surface on the case 120 side described in the section of “Problems to be Solved by the Invention”, and the peripheral sealing surfaces 120 f to 120 h are formed by the falling of the divided surface on the case 120 side. 26b is deformed inward, and this deformed portion is
When it passes through the peripheral sealing surfaces 120f to 120h due to the rotation of, it reverses to its original shape, and generates a reverse sound (pock sound).

In the sixth embodiment, the split surface of the split case body on the case 120 side (the split surface D in FIG. 3) is located at the axial center of the slide door 26 (the center in the direction perpendicular to the plane of FIG. 16). Equivalent) is set. Therefore, Case 1
20 falls toward the axial center of the slide door 26.

According to the sixth embodiment, both the chattering sound and the reverse sound (pock sound) can be prevented well.

That is, the film type slide door 26
When the elastic member 26 is assembled in the case 120,
e is elastically compressed, and the film member 26b is always compressed by the elastic repulsive force so that the opening-side peripheral sealing surface 12
0f to 120i, and the rigidity of the film member 26b is increased by the elastic member 26e being fixed to the film member 26b, so that the film member 26b is less likely to vibrate. The vibration of 26b is suppressed, and generation of chattering sound can be prevented.

Further, since the rigidity of the film member 26b is increased by the fixation of the elastic member 26e, the deformation of the film member 26b due to the fall of the case 120 hardly occurs.
Even if the film member 26b is deformed, the amount of deformation of the film member 26b is reduced due to the increase in rigidity,
Since the reversing speed of the deformed portion of the film member 26b is reduced, the frequency of the reversing sound (pock sound) is reduced, and the reversing sound becomes very difficult to hear. For the reasons described above, it is possible to satisfactorily prevent inversion sound.

(Modification of Sixth Embodiment) In the above-described sixth embodiment, the film member 26b is always brought into contact with the peripheral sealing surfaces 120f to 120i on the case side by the elastic repulsion of the elastic member 26e. So
The operating force of the slide door 26 increases due to the frictional force between the film member 26b and the sealing surfaces 120f to 120i.

Therefore, the case 120 of the sliding door 26 is
In the assembled state, the thickness of the elastic member 26e is reduced to a level at which the elastic member 26e is not elastically compressed, so that the film member 26b is always in the case-side opening peripheral sealing surface 120f- A configuration that does not correspond to 120i may be adopted.

In this way, the frictional force between the film member 26b and the sealing surfaces 120f to 120i can be reduced, and the operating force of the slide door 26 can be reduced. Note that a specific example of the thickness of the elastic member 26e in the present example is, for example, in a range of 2 mm or more and less than 4 mm.

As described above, the film member 26b is always urged by the elastic reaction force so that the peripheral edge sealing surface 120f on the case side is always open.
However, according to the sixth embodiment, the elastic member 26e is fixed to the film
Since the rigidity of the film member 26b can be increased, the vibration of the film member 26b can be suppressed. As a result, the present inventors have experimentally confirmed that the generation of chattering noise can be suppressed to a practically low level without hindrance as compared with the case where the elastic member 26e is not fixed to the film member 26b.

Therefore, in consideration of the effect of reducing the door operation force, the above-described modification is more practically advantageous.

(Seventh Embodiment) In the sixth embodiment,
Although the elastic member 26e is attached to the entire surface of the film member 26b, in the seventh embodiment, the elastic member 26e is attached only to a specific region of the film member 26b.

FIGS. 18 and 19 show a seventh embodiment, in which the elastic member 26e is attached only to the peripheral area of the communication ports 26n and 26p in the film member 26b. In the example of FIG. 18, a rectangular elastic member 26e is attached over the entire length in the door axial direction in the peripheral area of the communication ports 26n and 26p.

In another example of FIG. 19, an elastic member 26e is adhered in a shape along the outer shape (hexagon) of the communication port 26n, and a rectangular elastic member 26e is provided between the two communication ports 26p. Pasted.

In the film member 26b, the communication port 26
Since the rigidity of the peripheral portions of n and 26p is reduced due to the opening, chattering sound and reverse sound (popping sound) are likely to occur. According to the seventh embodiment, the rigidity of the peripheral portions of the communication ports 26n and 26p is reduced. It is increased by the fixation of the elastic member 26e, and it is possible to suppress the generation of chattering sound and reverse sound (pock sound).

(Eighth Embodiment) FIG. 20 shows an eighth embodiment in which the rigidity is increased by devising the shape of the edges of the communication ports 26n and 26p of the film member 26b.

The communication ports 26n, 26 of the film member 26b
A step 26q recessed toward the elastic member 26e (door substrate 26a) is integrally formed with the edge of p. This step 2
6q can be formed at the same time when the film member 26b is heated and formed into a semi-cylindrical shape.

According to the eighth embodiment, the communication ports 26n, 2n
The rigidity of the film member 26b itself can be improved by forming the step 26q at the edge of the 6p.
Together with the improvement in rigidity due to the fixation of 6e, it is possible to further improve the effect of suppressing chattering sound and reverse sound (pock sound).

(Other Embodiments) The first to fourth embodiments described above.
In the embodiment, the openings 22 and 23 have the lattices 22 a and 23 a
Is arranged only in one place parallel to the door sliding direction a,
When the opening areas of the openings 22 and 23 become large, two or more lattices 22a and 23a may be arranged in parallel with the door sliding direction a. Also in this case, it is preferable to dispose the elastic members 26e only at positions corresponding to the lattices 22a, 23a and the peripheral sealing surfaces 22b, 23b.

Also, the sliding door according to the present invention can be applied to an inside / outside air switching door of an air conditioner for a vehicle, and the like.
Furthermore, the present invention can be widely applied to an air passage switching device other than a 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 an enlarged front view of a main part of FIG.

FIG. 3 is an exploded perspective view of the slide door drive mechanism shown in FIG.

FIG. 4 is an enlarged perspective view of a single slide door of FIG. 3;

FIG. 5 is an exploded perspective view of the single slide door of FIG. 4;

FIG. 6 is a cross-sectional view showing a main part of the first embodiment,
3A shows a cross section.

FIG. 7 is a graph showing the relationship between the crushing allowance of the elastic member and the amount of air leakage according to the first embodiment.

FIG. 8 is a partial sectional view of a film member according to a second embodiment.

FIG. 9 is a schematic longitudinal sectional view of a vehicle front seat air conditioner according to a third embodiment.

10 is a cross-sectional view taken along the line AA of FIG. 3, which is a cross-sectional view of a main part of the air passage switching device studied and manufactured by the present inventors on a trial basis.

11 is a sectional view taken along the line CC of FIG.

FIG. 12 is a cross-sectional view taken along the line AA of FIG. 3, which is a cross-sectional view of a main part of another air passage switching device studied and manufactured by the inventors as a prototype.

FIG. 13 is an explanatory diagram of a chattering sound generation mechanism by the sliding door, and shows a cross section taken along line BB of FIG. 3;

FIG. 14 is an exploded perspective view of a slide door according to a fourth embodiment.

FIG. 15 is an exploded perspective view of a slide door according to a fifth embodiment.

FIG. 16 is a cross-sectional view of an air passage switching device including a slide door (rotary door) according to a sixth embodiment.

FIG. 17 is a perspective view showing a state before bending and forming a film member and an elastic member of a slide door according to a sixth embodiment.

FIG. 18 is a perspective view showing an example of a state before bending forming of a film member and an elastic member of a slide door according to a seventh embodiment.

FIG. 19 is a perspective view showing another example of a state before bending the film member and the elastic member of the slide door according to the seventh embodiment.

20A is a perspective view of a single film member of a slide door according to an eighth embodiment, and FIG. 20B is a sectional view taken along line AA of FIG.

[Explanation of symbols]

22 ... face opening, 23 ... foot opening, 22a,
23a: lattice, 22b, 23b: peripheral sealing surface, 26:
Sliding door, 26a: door substrate, 26b: film member, 26e: elastic member.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Toshio Torii 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Corporation (72) Inventor Masato Inuzuka 1-1-1, Showa-cho, Kariya City, Aichi Prefecture Denso Corporation (72) Inventor Yoshio Yoshida 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Corporation (72) Inventor Kazushi Shibata 1-1-1, Showa-cho, Kariya City, Aichi Prefecture F-term (reference) ) 3L011 BA01 BH02

Claims (17)

[Claims] 1. An air passage switch comprising a slide door (26) sliding along an opening surface of an air passage (22, 23) and opening and closing the air passage (22, 23) by the slide door (26). A device for forming a grid (22a, 23a) in the air passages (22, 23) that divides an opening surface into a plurality of openings, and connecting the grid (22a, 23a) to the slide door (2).
6) are arranged in parallel with the sliding direction (a), and the peripheral sealing surfaces (22b, 22b,
23b) and a film member (26b) that closes the air passages (22, 23) by pressing against the end faces of the lattices (22a, 23a), and a door substrate (26a) that supports the film member (26b). , The sliding door (2
6), an opening (26c) for applying a wind pressure to the film member (26b) is provided in the door substrate (26a), and the film member (26b) is provided on the periphery of the air passages (22, 23). The sliding door (26) is provided with an elastic means (26e) for pressing the sealing surfaces (22b, 23b) and the end faces of the lattices (22a, 23a) by an elastic reaction force.
An end surface of the grid (22a, 23a) at a central portion of the air passage (22, 23) in a direction (W) orthogonal to a sliding direction (a) of the slide door (26) and the door substrate ( 26a) is defined as L1, and the air passage (2
2, 23) at the end of the peripheral sealing surface (22b,
An air passage switching device characterized in that, when the distance between the door board (26a) and the door board (26a) is L2, a relationship of L1 ≧ L2 is set. 2. The two intervals are set in a relationship of L1> L2, and the maximum value of the interval (L1) is set to a range where the elastic compression amount when the elastic means (26e) is assembled is 0 or more. The air passage switching device according to claim 1, wherein the setting is performed. 3. The elastic means (26e) has an elongated shape extending in parallel with the sliding direction (a) of the slide door (26), and the elastic means (26e) is connected to the air passage (2).
The air passage switching device according to claim 1 or 2, wherein the air passage switching device is disposed only at positions corresponding to the peripheral sealing surfaces (22b, 23b) of (2, 23) and the end surfaces of the grids (22a, 23a). 4. An air passage switching device comprising a slide door (26) sliding along an opening surface of an air passage (22, 23) and opening and closing the air passage (22, 23) by the slide door (26). A device for forming a grid (22a, 23a) in the air passages (22, 23) for partitioning an opening surface into a plurality of openings, and connecting the grid (22a, 23a) to the sliding door (2).
6) are arranged in parallel with the sliding direction (a), and the peripheral sealing surfaces (22b, 22b,
23b) and a film member (26b) that closes the air passages (22, 23) by pressing against the end faces of the lattices (22a, 23a), and a door substrate (26a) that supports the film member (26b). , The sliding door (2
6), an opening (26c) for applying a wind pressure to the film member (26b) is provided in the door substrate (26a), and the film member (26b) is provided on the periphery of the air passages (22, 23). The sliding door (26) is provided with an elastic means (26e) for pressing the sealing surfaces (22b, 23b) and the end faces of the lattices (22a, 23a) by an elastic reaction force.
The elastic means (26e) is provided on the slide door (26).
And an elongated shape extending in parallel with the sliding direction (a) of the air passage (2).
An air passage switching device, wherein the air passage switching device is disposed only at positions corresponding to the peripheral sealing surfaces (22b, 23b) of (2, 23) and the end surfaces of the lattices (22a, 23a). 5. A sliding door (26) that slides along an opening surface of an air passage (22, 23, 230), and the air passage (22, 23, 230) is opened and closed by the sliding door (26). A film for closing the air passages (22, 23, 230) by pressing against the peripheral sealing surfaces (22b, 23b, 120f to 120i) of the air passages (22, 23, 230). A member (26b) and a door substrate (26a) supporting the film member (26b) are connected to the slide door (2).
6), an opening (26c) for applying a wind pressure to the film member (26b) is provided in the door substrate (26a). Further, of the film member (26b), the opening on the door substrate (26a) side is provided. An air passage switching device, wherein an elastic member (26e) is fixed to a surface. 6. The sliding door (26) has a substantially flat plate shape, and slides linearly along an opening surface of the air passage (22, 23, 230). 6. The air passage switching device according to 5. 7. The air passage switching device according to claim 6, wherein the elastic member (26e) has an elongated shape extending parallel to the sliding direction (a) of the slide door (26). 8. The air passage switching device according to claim 6, wherein the elastic member (26e) has a plate shape corresponding to the shape of the film member (26b). 9. The elastic compression amount of the elastic member (26e) when the slide door (26) is assembled into the air passages (22, 23, 230) is set in a range of 0 ± 1.5 mm. The air passage switching device according to any one of claims 5 to 8, wherein: 10. The sliding door (26) has a substantially semi-cylindrical shape, and the sliding door (26) has an air passage (22, 23, 23).
The air passage switching device according to claim 5, wherein the air passage switching device rotates along the opening surface of (0). 11. The two members (26) with the elastic member (26e) fixed to the film member (26b).
The air passage switching device according to claim 10, wherein the members (26, 26e) are punched into a predetermined shape, and thereafter, the both members (26b, 26e) are heated and bent into a substantially semi-cylindrical shape. 12. The sliding door (26) has communication ports (26n, 26p) that pass through the two members (26b, 26e) and allow air to pass therethrough, and around the communication ports (26n, 26p). 6. The elastic member (26e) is fixed only to the portion.
The air passage switching device according to any one of claims 10 and 11. 13. The air passage switching device according to claim 12, wherein a step portion (26q) is integrally formed at an edge of the communication port (26n, 26p). 14. When the slide door (26) is installed in the air passages (22, 23, 230),
The elastic member (26e) is elastically compressed, and the elastic force of the elastic member (26e) causes the film member (2e) to elastically compress.
6. The air passage (22, 23, 230) having a peripheral sealing surface (22b, 23b, 120f to 120i) which presses the peripheral surface of the air passage (22, 23, 230).
The air passage switching device according to any one of 0, 11, 12, and 13. 15. When the slide door (26) is installed in the air passages (22, 23, 230),
The plate thickness of the elastic member (26e) is set in a range where the elastic member (26e) is not elastically compressed, according to any one of claims 5, 10, 11, 12, and 13. Air passage switching device. 16. The film member (26b) includes a film base material layer (50), and of the film base material layer (50), the peripheral sealing surfaces (22b, 23b) and the grids (22a, 23a). The air passage switching device according to any one of claims 1 to 15, further comprising: a low friction material layer (51) provided on an end surface and a sliding surface. 17. The slide door (2) comprising the air passage switching device according to claim 1;
A vehicle air conditioner characterized by opening and closing a plurality of air passages (22, 23, 230) of air flowing toward a vehicle cabin by 6).