JP3208979B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle provided with an air mix door for adjusting the temperature of air blown into a vehicle compartment, for example.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 12, there is an air conditioner for a vehicle in which a film door made of a flexible thin film is used as an air mix door 101 for controlling the temperature of air blown into a vehicle interior. . Then, in order to control the temperature of the air blown out into the passenger compartment, the unit case 10 is controlled.
Inside 2, a hot air passage 104 through which air passing through the heater core 103 flows and a cool air passage 105 through which air bypassing the heater core 103 flows are formed. The temperature of the air blown into the vehicle interior is determined by the amount of air flowing through the hot air passage 104 and the amount of air flowing through the cold air passage 105. In addition, 106 and 107 are a drive shaft and a driven shaft for driving the air mix door 101, and 108 is an opening formed in the air mix door 101.

[0003]

However, in the prior art, when the layout is designed in the state of the following equation (1), as shown in the graph of FIG. The relationship between the stroke and the temperature of the air blown into the vehicle interior deviates from the ideal line (dashed line in the figure).

That is, the opening 108 and the cold air passage 105
The maximum cooling state where the whole overlaps (air mix door 1
01 opening degree 0%), the opening 108 and the hot air passage 104
The maximum heating state (air mix door 1)
When the air mix door 101 moves up to the opening degree of 100% of the air mix door 101, there is a problem that the continuity of the change of the blowing temperature with respect to the stroke of the air mix door 101 is reduced.

[Equation 1] La ≠ Lb

Note that La is the opening dimension of the hot air passage 104 in the stroke direction of the air mix door 101 (= stroke required for the air mix door 101 to cross the hot air passage 104), and Lb is the air mix door 10
The opening size of the cool air passage 105 in the first stroke direction (= stroke required for the air mix door 101 to cross the cool air passage 105).

Here, as shown in FIG. 12, the opening dimension La of the hot air passage 104 is equal to the opening dimension Lb of the cold air passage 105.
If it is larger (La> Lb), the stroke of the air mix door 101 is set to the target opening degree of the hot air passage 104 of 50.
%, The cold air passage 105 is opened wider than the warm air passage 104. As a result, the amount of air passing through the cold air passage 105 becomes larger than the amount of air passing through the warm air passage 104.
(Solid line X in the graph of FIG. 13).

On the contrary, as shown in FIG.
05 is larger than the opening La of the hot air passage 104 (Lb> La), the air mix door 1
When the stroke of 01 is the target opening degree of the hot air passage 104 of 50%, the hot air passage 104 is opened wider than the cold air passage 105. As a result, the amount of air passing through the warm air passage 104 becomes larger than the amount of air passing through the cool air passage 105, so that the temperature of the air blown into the vehicle interior is on the Hot side of the ideal line (see the graph of FIG. 13). Solid line Y).

According to the present invention, there is provided a vehicle for which a change in the amount of air passing through the first passage and a change in the amount of air passing through the second passage with respect to the stroke of the membrane member can be made continuous. The purpose is to provide an air conditioner.

[0009]

According to a first aspect of the present invention, there is provided a first passage port through which air passes, and an air passage provided in parallel with the first passage port. A frame having a second passage opening, and an opening for opening the first passage opening or the second passage opening according to the degree of overlap between the first passage opening or the second passage opening. In the air conditioner for a vehicle, comprising: a film-like member that moves across the first passage opening and the second passage opening; wherein the frame is in a moving direction of the film-like member.
The opening size of the first passage opening and the opening size of the second passage opening are made substantially coincident with each other, and the film-shaped member changes the opening size of the opening in the moving direction of the first passage opening. A technical means which is approximately equal to the opening size or the opening size of the second passage opening is employed.

According to a second aspect of the present invention, there is provided a first passage port through which air passes, a second passage port provided in parallel with the first passage port, and through which air passes, and The overlapping state of the frame provided between the first passage opening and the second passage opening and having an impervious portion through which air does not pass, and the first passage opening or the second passage opening. A film-like member having an opening for opening the first passage or the second passage according to the first passage, the non-passage, and the second passage. In the vehicle air conditioner provided with, the frame body, in the moving direction of the film-shaped member, the opening size of the first passage opening and the opening size of the second passage opening substantially coincide, The film-shaped member is configured such that the opening dimension of the opening in the moving direction is the same as that of the first passage port. Was adopted technical means is substantially coincident with the opening size of the mouth dimension or the second passage port and dimensions of the interrupted portions in the dimensions added.

According to a third aspect of the present invention, there is provided a first passage port through which air passes, a second passage port provided in parallel with the first passage port, and through which air passes, and The first passing port is provided between the first passing port and the second passing port, the first passing port depending on the degree of overlap between the frame having an impervious portion through which air does not pass, and the first passing port. A first opening for opening a mouth, and a second opening for opening the second passage according to the degree of overlap with the second passage, wherein the first passage, the first passage, In a vehicle air conditioner comprising a partition portion and a film-like member moving across the second passage opening, the frame body has an opening of the first passage opening in a moving direction of the film-like member. The dimension is made substantially equal to the dimension of the opening of the second passage opening, and the film-like member is provided with the first opening. Part and the distance between the second opening,
Technical means is employed in which the distance between the opening size of the first opening or the second passage opening and the size of the non-passing portion is substantially matched.

[0012] A unit case accommodating a heater core for heating air by exchanging heat with air and a heat medium may be used as the frame. The first passage is a hot air passage for heating air by passing air flowing in the unit case through the heater core, and the second passage is air flowing in the unit case. Is a cool air passage that bypasses the heater core.

[0013]

According to the first and second aspects of the present invention, the second passage from the state in which the opening of the film-like member overlaps so as to open the entire first passage opening. When the membrane member is moved to the state where the opening overlaps the entire mouth, the overlap between the opening and the second passage opening is reduced by the degree of the overlap between the opening and the first passage opening. The condition is getting bigger. In this way, the opening degree of the first passage opening and the opening degree of the second passage opening always change with a predetermined relationship with respect to the stroke of the membrane member.

According to the third aspect of the present invention, the first opening and the second opening of the film-like member are overlapped so as to open the entire first passage opening to the second opening. When the film-like member is moved to a state where it overlaps so as to open the entire passage opening, the second opening portion and the second opening portion are reduced by the degree that the overlap between the first opening portion and the first passage opening is reduced. The degree of overlap with the passage 2 increases. In this way, the opening degree of the first passage opening and the opening degree of the second passage opening always change with a predetermined relationship with respect to the stroke of the membrane member.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the vehicle air conditioner of the present invention is applied to an automobile air conditioner will be described.

[First Embodiment] FIGS. 1 to 6 show a first embodiment of the present invention, and FIGS. 1 and 2 show an air conditioning unit of an air conditioner for a vehicle. .

The vehicle air conditioner 1 is an automatic air conditioner, and electrically controls an air conditioning unit 2 disposed in a center console in a vehicle compartment and each air conditioning device of the air conditioning unit 2 to enter the vehicle compartment. Control unit 3 (hereinafter referred to as E)
CU). The air conditioning unit 2 includes two blowers 4, an evaporator 5, a heater core 6, a unit case 7, an air mix door 8, an air outlet switching door 9, and the like.

The two blowers 4 are blowing means housed in a unit case 7, the rotation speed (blowing amount) is controlled by a blower motor 10 whose applied voltage is controlled by the ECU 3, and air blown from the suction port 11 is blown. Air is blown into the vehicle interior through the unit case 7. These blowers 4
The air flow can be continuously changed between the maximum air flow (Hi) and the minimum air flow (Lo).

The evaporator 5 is a heat exchanger (cooling means) housed in the unit case 7, and is driven by an internal combustion engine to rotate, a compressor (not shown), a condenser (not shown), and a pressure reducing device (not shown). And refrigeration cycle. The evaporator 5 exchanges heat between the refrigerant discharged from the compressor and flows therein and the air flowing in the unit case 7 to cool the air.

The heater core 6 is a heat exchanger (heating means) arranged on the leeward side of the evaporator 5 in the unit case 7, and includes a cooling water heated by a water jacket of the internal combustion engine and an air flowing in the unit case 7. To heat the air.

The unit case 7 is a frame of the present invention, is formed of resin, and has a hot air passage 12 therein.
First and second cool air passages 13 and 14 and first and second support walls 15 and 16 are provided. The hot air passage 12 is a first passage port of the present invention, and allows the air blown out from the evaporator 5 to pass through the heater core 6 to form an air mixing area 17.
It is a passage to send to.

The first and second cold air passages 13 and 14 are second passage openings of the present invention, and the first and second support walls 15 and 16 are provided.
Are formed on both sides of the hot air passage 12. First,
The second cool air passages 13 and 14 are passages for sending air blown out from the evaporator 5 to the air mixing area 17 by bypassing the heater core 6. In this embodiment, the opening size of the hot air passage 12 and the first and second cold air passages 1 are different.
The relationship between the openings 3 and 14 is set such that the following equation (2) is obtained.

[Equation 2] La ≒ Lb1 + Lb2

Note that La is the opening dimension (==) of the hot air passage 12 in the stroke (movement) direction of the air mixing door 8.
(Stroke required for the air mix door 8 to cross the hot air passage 12). Lb1 is the first cold air passage 1 in the stroke (movement) direction of the air mix door 8.
3 (= air mix door 8 is the first cold air passage 1)
(Stroke necessary to cross 3). Furthermore, L
b2 is the opening dimension of the second cool air passage 14 in the stroke (movement) direction of the air mix door 8 (= stroke required for the air mix door 8 to cross the second cool air passage 14).

The first support wall 15 regulates a position at which one end of the heater core 6 is mounted in the unit case 7. In addition, the leeward side from the leeward side of the first support wall 15 is:
While separating the hot air passage 12 and the first cold air passage 13,
The first non-passing portion 18 through which air does not pass is configured.

As shown in FIG. 3, the first support wall 15 has a mating portion 19 of a molding die (not shown) slightly recessed to set a mold splitting surface 20 at the mating portion 19. . As a result, even if burrs 21 are generated on the split surface 20 of the mating portion 19 by cutting the mold such as a molding die in the direction of the arrow shown in the drawing, the burrs 21 of the split surface 20 remain on the sliding surface of the air mix door 8. Do not reach.

The second support wall 16 regulates the mounting position of the other end of the heater core 6 in the unit case 7. Further, the windward side of the second support wall 16 is
And the second cold air passage 14, and constitutes a second non-passing portion 22 through which air does not pass.

The side wall of the unit case 7 is provided with a defroster outlet 23, a face outlet 24 and a foot outlet 25. The defroster outlet 23 is an outlet that mainly blows out hot air toward the inner surface of the windshield of the automobile. The face outlet 24 is an outlet that mainly blows out cool air toward the occupant's head and chest, and communicates with the air mix area 17 via a face passage 26. The foot outlet 25 is an outlet that mainly blows out warm air toward the feet of the occupant.
Through the air mix area 17.

FIG. 4 shows the operating position of the air mix door 8 in each air-conditioning state, the hot air passage 12, the first and second cold air passages 13 and 14, and the first and second non-communication portions 1 of the unit case 7.
It is the figure which showed the relationship with 8,22.

The air mix door 8 is a film door which is used as a blowing temperature control means and is made of a flexible thin film laminated with a resin such as PPS or nylon. The air mix door 8 is stretched between the drive shaft 31 and the driven shaft 32 rotatably supported by the unit case 7 so as to slidably contact the first and second support walls 15 and 16 and has a predetermined length in the longitudinal direction. Four first and second window portions 33 and 34 are formed at positions.

At one end of the air mix door 8, a plurality of holes 35 for hooking with a plurality of claws (not shown) of the drive shaft 31 are formed. A plurality of claw portions (not shown) of the driven shaft 32 are provided at the other end of the air mix door 8.
Are formed with a plurality of holes 36 for hooking.

The air mix door 8 moves between the drive shaft 31 and the driven shaft 32 to move the first and second windows 33 and 34 and the hot air passage 12, the first and second cold air passages 13 and 14, and The degree of overlap with the first and second passages 18 and 22 (the hot air passage 1
2 target opening) to change each outlet 23-2.
5. Adjust the temperature of the air blown from 5.

The air mix door 8 is shown in FIG.
From the operating position (target opening SW = 0%) in the maximum cooling state (Max Cool) shown in FIG. 4, the operating position (target opening SW = 50) in the intermediate state (Middle) shown in FIG.
%) And the maximum heating state (Max) shown in FIG.
(Hot) operating position (target opening degree SW = 100%).

The drive shaft 31 of the air mix door 8
Is rotated by a step motor 37, and the rotation of the drive shaft 31 is transmitted to the driven shaft 32 via a timing belt 38 stretched outside the unit case 7. The step motor 37 is an electric motor (drive means) that receives a pulse signal output from the ECU 3 and rotates the drive shaft 31 by a mechanical angle corresponding to the number of pulses. In this embodiment, in order to continuously stroke the air mix door 8 from the operating position in the maximum cooling state to the operating position in the maximum heating state, for example, the number of pulses to the step motor 37 is required to be 3,200.

The first window 33 is a first opening of the present invention, and depends on how the hot air passage 12 and the second cold air passage 14 overlap with each other, the hot air passage 12 or the second cold air passage 14.
Is formed at one end of the air mix door 8. In addition, the first window portion 33 includes a portion on one end side in which the opening area gradually decreases at an acute angle, a portion on the other end side in which the opening area gradually decreases at an obtuse angle, and a rectangular portion with a constant opening area therebetween. I have.

The second window portion 34 is a second opening of the present invention, and is a portion for opening only the first cool air passage 13 in accordance with the degree of overlap with the first cool air passage 13. 8 is formed on the other end side. The second window 34
Is provided with a portion at one end side where the opening area gradually decreases at an acute angle, a portion at the other end side where the opening area gradually decreases at an obtuse angle, and a rectangular portion with a constant opening area between them.

The first and second window portions 33 and 34 are formed so as to have the relationship of the following equations (3) and (4).

[Equation 3] Lf1 ≒ La

[Equation 4] Lf2 ≒ Lb1

The interval between the first and second window portions 33 and 34 is formed so as to have a relation of either the following equation (5) or the following equation (6).

[Expression 5] Ld ≒ La + Lc1

[Formula 6] Ld ≒ Lb1 + Lc1

Lf1 is the opening size of the first window 33 in the stroke direction of the air mix door 8,
f2 is the opening size of the second window portion 34 in the stroke direction of the air mix door 8. La is the opening dimension of the hot air passage 12 in the stroke direction of the air mixing door 8, and Lb 1 is the opening dimension of the first cold air passage 13 in the stroke direction of the air mixing door 8. Ld is the distance between the first window 33 and the second window 34 in the stroke direction of the air mix door 8;
1 is the first in the stroke direction of the air mix door 8
This is the size of the discontinuous portion 18.

As shown in the graph of FIG. 5, the opening areas of the first and second windows 33 and 34 are determined by the amount of air passing through the hot air passage 12 and the first and second cold air passages 13 and 14. Is determined so as to have linearity with respect to the stroke of the air mix door 8. As a result, as shown in the graph of FIG.
With respect to the stroke, the temperature of the air blown into the vehicle cabin has linearity.

The outlet switching door 9 is used as an outlet switching means, and is a film door made of a flexible thin film laminated with a resin such as PPS or nylon. The outlet switching door 9 is stretched between a drive shaft 41, a driven shaft 42, and an intermediate shaft 43 rotatably supported by the unit case 7, and has a plurality of windows (not shown) at predetermined positions in the longitudinal direction. Are formed.

The outlet switching door 9 moves between the drive shaft 41 and the driven shaft 42 to move the plurality of windows and the outlets 23 to 25.
Is selectively opened and closed to change the outlet mode. The drive shaft 41 of the outlet switching door 9 is driven to rotate by a step motor 44. The rotation of the drive shaft 41 is controlled by a driven shaft 42 via a timing belt (not shown).
Is transmitted to The step motor 44 is an electric motor (drive means) having a structure similar to that of the step motor 37.

The ECU 3 is used as a control means.
It includes a PU, a ROM, a RAM, and the like, and is itself well known. The ECU 3 is connected to a battery (not shown) via an ignition switch (not shown). The ECU 3 previously stores in ROM an input signal and the like input from an inside air temperature sensor, an outside air temperature sensor, a solar radiation amount sensor, a post-evaporation temperature sensor, a water temperature sensor, a blow-out temperature sensor, and an operation panel (all not shown). Based on the control program, each drive means such as the blower motor 10 and the step motors 37 and 44 is controlled to automatically control the air-conditioning state in the vehicle compartment.

[Operation of the First Embodiment] Next, the operation of the vehicle air conditioner 1 of this embodiment will be briefly described with reference to FIGS.

A) In the maximum cooling state (Max Cool, target opening SW = 0%) When the step motor 37 rotates and the air mix door 8 is wound around the drive shaft 31 most, FIG. As described above, the air mix door 8 is set to the operating position in the maximum cooling state. As a result, the entire first and second windows 33 and 34 of the air mix door 8 overlap with the first and second cold air passages 13 and 14 of the unit case 7, whereby the hot air passage 12 is completely closed, and 1, second cold air passage 13,
14 will be fully opened.

[0045] Therefore, all the cool air cooled by the evaporator 5 by the operation of the two blowers 4 passes through the first and second cool air passages 13 and 14, thereby all bypassing the heater core 6. Low-temperature cold air flows into the mixing area 17. The low-temperature cold air flows from the air mix area 17 through the window of the outlet switching door 9 set in, for example, the face mode, flows into the face passage 26, and is blown out from the face outlet 24 into the vehicle interior. Cooling of the passenger compartment is performed.

B) Intermediate state (Middle, target opening S
(W = 50%) When the step motor 37 rotates and the air mix door 8 is wound around the driven shaft 32, and the air mix door 8 strokes to an intermediate position between the maximum cooling state and the maximum heating state, FIG. b) As shown in FIG.
Is set to the intermediate operating position. As a result, the first window 33 of the air mix door 8 opens the hot air passage 12 of the unit case 7 halfway, opens the second cold air passage 14, and opens the first cold air passage 13. Become. At this time, the first and second cold air passages 13 and 14 are
The opening is substantially the same as the opening of.

Therefore, the cool air cooled by the evaporator 5 by the operation of the two blowers 4 is supplied to the air mixing door 8.
The amount of air passing through the hot air passage 12 and the first and second
The air is distributed so that the amount of air passing through the cool air passages 13 and 14 substantially coincides with each other. As a result, half of the cool air is heated by passing through the heater core 6, and the remaining cool air bypasses the heater core 6. Hot air is formed. The hot air is in the air mix area 1
From 7, for example, the air flows into the foot passage 27 through the window of the outlet switching door 9 set in the foot mode, and is blown out from the foot outlet 25 into the vehicle interior to heat the vehicle interior.

C) In the maximum heating state (Max Hot, target opening SW = 100%) When the step motor 37 rotates and the air mixing door 8 is wound around the driven shaft 32 most, that is, the air mixing door 8 is When the stroke is maximized, the air mix door 8 is set to the operating position in the maximum heating state as shown in FIG. As a result, the entire first and second windows 33 and 34 of the air mix door 8 overlap with the hot air passage 12 of the unit case 7, and the hot air passage 12
Are fully opened, and the first and second cold air passages 13 and 14 are fully closed.

[0049] Therefore, all the air sent by the operation of the two blowers 4 passes through the warm air passage 12 and is entirely heated by passing through the heater core 6. High-temperature warm air flows into the area. The high-temperature hot air flows from the air mix area 17 through the window of the outlet switching door 9 set to, for example, the foot mode, flows into the foot passage 27, and flows into the foot outlet 25.
Is blown into the vehicle interior to heat the vehicle interior.

[Effects of the First Embodiment] As described above, the air conditioner 1 for an automobile can be used when the air mix door 8 strokes from the operating position in the maximum cooling state to the operating position in the maximum heating state as shown in FIG. As shown in the graph, the amount of air passing through the first and second cold air passages 13 and 14 is controlled to decrease by an amount corresponding to the increase in the amount of air passing through the hot air passage 12. Accordingly, as shown in the graph of FIG. 6, the relationship between the stroke of the air mix door 8 and the temperature of the air blown out into the vehicle compartment coincides with the ideal line. Can be provided.

Here, the air mix door 8 of this embodiment
In order to seal the flow of air, a stroke is made between the drive shaft 31 and the driven shaft 32 in sliding contact with the first and second support walls 15 and 16 of the unit case 7. For this reason, when molding the unit case 7 with resin, FIG.
As shown in (1), when burrs 21 are generated on the mold splitting surface 20 by removing a mold such as a molding die in the direction of the arrow in the drawing, the following problem occurs. That is, the sealing performance of the burr portion is deteriorated, an abnormal noise is generated when the air mix door 8 slides with the burr 21, and a crack or the like is generated by the friction of the air mix door 8 with the burr 21. Was a point. Therefore, the outer surface (sliding surface) of the first support wall 15 needs to be polished conventionally, which has been a factor of increasing the cost.

However, the first support wall 15 of this embodiment
As shown in FIG. 3, the mating portion 19 of the molding die is slightly depressed to set the mold splitting surface 20 at the mating portion 19. As a result, even if burrs 21 are generated on the mold splitting surface 20 of the mating portion 19 when the mold is removed by using a molding die in the direction indicated by the arrow, the burrs 21 do not reach the air mix door 8. Therefore, the above-described problem can be solved, and the driving of the air mix door 8 by the step motor 37 can be performed smoothly.

[Second Embodiment] FIG. 8 shows a second embodiment of the present invention and is a diagram showing a main part of an air conditioner for a vehicle. In the unit case 50 of this embodiment, a heater core 6 is accommodated, and a partition wall in which a warm air passage 51 as a first passage and a cool air passage 52 as a second passage is formed. 53 are formed.
In the unit case 50, the opening dimension La of the hot air passage 51 and the opening dimension Lb of the cold air passage 52 are substantially matched.

The partition wall 53 is a non-communicating portion of the present invention, and forms a parting surface 54 by slightly recessing a mating portion (not shown) of a molding die. For this reason, as in the second embodiment, even if burrs 55 are generated on the mold splitting surface 54 when the molding die is removed, the burrs 55 do not reach the air mix door 8.

The air mix door 8 has a first window 56 as a first opening and a second window 57 as a second opening. In this embodiment, the opening size of the first window portion 56 is made substantially equal to the opening size La of the hot air passage 51, and the opening size of the second window portion 57 is made substantially equal to the opening size Lb of the cold air passage 52. ing.

As described above, in this embodiment, as in the first embodiment, the change in the amount of hot air passing through the warm air passage 51 and the change in the amount of cool air passing through the cool air passage 52 with respect to the stroke of the air mix door 8 are continuous. Therefore, it is possible to provide continuity in the change of the blowing temperature with respect to the stroke of the air mix door 8.

[Third Embodiment] FIG. 9 shows a third embodiment of the present invention and is a diagram showing a main part of an air conditioner for a vehicle. The heater core 6 is housed inside the unit case 60 of this embodiment, and further, a warm air passage 61 as a first passage, a cool air passage 62 as a second passage, and a partition wall as a non-through portion. 63 are formed. Further, in the unit case 60, as shown in FIG. 9, the opening dimension La of the warm air passage 61 and the opening dimension Lb of the cool air passage 62 are made substantially the same.

Further, a window 64 as an opening is formed in the air mix door 8 extending between the drive shaft 31 and the driven shaft 32. And in this example,
The opening size of the window portion 64 is made substantially equal to the size (La + Lc or Lb + Lc) obtained by adding the opening size of the hot air passage 61 or the opening size of the cold air passage 62 and the size of the partition wall 63. As a result, the same effects as in the first embodiment are achieved.

[Fourth Embodiment] FIG. 10 shows a fourth embodiment of the present invention and is a diagram showing a main part of an air conditioner for a vehicle. In the unit case 70 of this embodiment, the heater core 6 is accommodated, and a hot air passage 71 as a first passage and a cool air passage 72 as a second passage are formed. Also, the unit case 70
Is the opening dimension L of the hot air passage 71 as shown in FIG.
a and the opening dimension Lb of the cool air passage 72 are substantially matched.

The window 73 is formed as an opening in the air mix door 8 extending between the drive shaft 31 and the driven shaft 32. And in this example,
The opening size of the window 73 is made substantially equal to the opening size La of the hot air passage 71 or the opening size Lb of the cold air passage 72.
As a result, the same effects as in the first embodiment are achieved.

[Fifth Embodiment] FIG. 11 shows a fifth embodiment of the present invention and is a diagram showing a main part of an air conditioner for a vehicle. The heater core 6 is housed inside the unit case 80 of this embodiment, and further, a hot air passage 81 as a first passage, and first and second cool air passages 82 and 83 as second passages. Are formed. Also,
As shown in FIG. 11, the opening dimension La of the hot air passage 81 substantially matches the opening dimension (Lb1 + Lb2) obtained by adding the opening dimensions of the first and second cold air passages 82 and 83.

A window 84 as an opening is formed in the air mix door 8 stretched between the drive shaft 31 and the driven shaft 32. And in this example,
The opening size of the window 84 is made substantially equal to the opening size La of the hot air passage 81 or the opening size (Lb1 + Lb2) obtained by adding the opening sizes of the first and second cold air passages 82 and 83. As a result, the same effects as in the first embodiment are achieved.

[Modification] In this embodiment, the air mix door 8 is used as the film-like member. However, an inside / outside air switching door or an air outlet switching door may be used as the film-like member. In this embodiment, the air mixing door 8 is stretched between the drive shaft 31 and the driven shaft 32 while sliding on the first and second support walls 15 and 16. It may be stretched while sliding on an intermediate shaft between the driven shaft 32 and the driven shaft 32.

In this embodiment, the air mix door 8 is provided with four first and second windows 33 and 34, but the air mix door 8 is provided with the first and second windows 33 and 34. , Second
1 to 3 or 5 or more openings may be provided. In this embodiment, the hot air passage 12 (first passage opening)
Although the first and second cold air passages 13 and 14 (second passages) are provided on both sides of the first passage, the first passages may be provided on both sides of the second passage.

The opening shapes of the first and second passage openings, openings, and the first and second openings may be any shapes such as a circle, an ellipse, an ellipse, and a polygon. First,
The depth of the second passage opening, the opening, and the first and second openings may be long like a tube or short like a stop. As the film-like member, one or more resin thin films may be used.

[0066]

According to the present invention, the amount of air passing through the first passage is reduced from the state in which the amount of air passing through the first passage is minimum and the amount of air passing through the second passage is maximum. When the film-shaped member is moved until the maximum is and the amount of air passing through the second passage is minimized, the second amount is increased by the amount of air passing through the first passage. The amount of air passing through the passage opening can be reduced. Therefore, the change in the amount of air passing through the first passage and the change in the amount of air passing through the second passage can have continuity with respect to the stroke of the membrane member.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a first embodiment of the present invention.

FIG. 3 is an enlarged view showing a main part of the first embodiment of the present invention.

FIG. 4 is a developed view showing a relationship between an operation position of the air mix door used in the first embodiment of the present invention and each passage.

FIG. 5 is a graph showing a relationship between a stroke of the air mix door and each passage according to the first embodiment of the present invention.

FIG. 6 is a graph showing a relationship between a stroke and an air outlet temperature of the air mix door according to the first embodiment of the present invention.

FIG. 7 is an enlarged view showing a comparative example with respect to a main part of the first embodiment of the present invention.

FIG. 8 is a schematic view showing a main part of a second embodiment of the present invention.

FIG. 9 is a schematic view showing a main part of a third embodiment of the present invention.

FIG. 10 is a schematic diagram showing a main part of a fourth embodiment of the present invention.

FIG. 11 is a schematic diagram showing a main part of a fifth embodiment of the present invention.

FIG. 12 is a schematic view showing a main part of a conventional vehicle air conditioner.

FIG. 13 is a graph showing a relationship between a stroke and a blowout temperature of a conventional air mix door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner for vehicles 6 Heater core 7 Unit case (frame) 8 Air mix door (membrane member) 12 Hot air passage (1st passage) 13 1st cold air passage (2nd passage) 14 2nd Cold air passage (second passage) 18 First non-communication part 22 Second non-communication part 33 First window (first opening) 34 Second window (second opening)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-231707 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/00 102

Claims (5)

(57) [Claims] 1. A frame having a first passage opening through which air passes through, a second passage opening provided in parallel with the first passage opening, and through which air passes through the inside, An opening for opening the first passage opening or the second passage opening in accordance with the degree of overlap with the first passage opening or the second passage opening, wherein the first passage opening and the second passage opening are provided. And a film-like member moving across the passage opening of the vehicle, wherein the frame body has an opening dimension of the first passage opening in the moving direction of the film-like member and the second dimension. The opening size of the opening is substantially matched with the opening size of the passage opening, and the film-shaped member is configured such that the opening size of the opening in the moving direction is the opening size of the first passage opening or the second opening size.
An air conditioner for a vehicle, characterized in that the opening dimension of the passage opening substantially coincides with the opening size of the passage opening. 2. A first passage through which air passes through the inside, a second passage through which air passes through the inside, and a first passage through which air passes through the inside. The first passage is provided in accordance with the degree of overlap between the frame provided with the second passage opening and having an impervious portion through which air does not pass, and the first passage opening or the second passage opening. An air conditioner for a vehicle, comprising: an opening for opening a mouth or the second passage opening; and a membrane member moving across the first passage opening, the non-passage portion, and the second passage opening. In the apparatus, the frame body substantially matches an opening size of the first passage opening and an opening size of the second passage opening in a moving direction of the film member, and the film member moves The opening dimension of the opening in the direction, the opening dimension of the first passage opening or the second
An air conditioner for a vehicle, characterized in that the size substantially coincides with the sum of the size of the opening of the passage opening and the size of the non-passing portion. 3. A first passage through which air passes through the inside, a second passage through which air passes through the inside, and a first passage through which air passes through the inside. A first frame that is provided between the second passage port and has an impervious portion through which air does not pass, and that opens the first passage port according to the degree of overlap with the first passage port. An opening, and a second opening for opening the second passage according to the degree of overlap with the second passage, wherein the first passage, the partition, and the second An air conditioner for a vehicle, comprising: a membrane member that moves across a passage port; wherein the frame body has an opening dimension of the first passage port and the second passage in a moving direction of the membrane member. The opening size of the mouth is made substantially coincident with each other, and the film-shaped member is provided with the first opening and the second opening. Interval, first air conditioning apparatus for a vehicle, characterized in that the opening size of the opening or the second passage port was substantially matched to the spacing of the dimension obtained by adding the interruption of the. 4. The air conditioner for a vehicle according to claim 1, wherein said frame body contains a heater core for heating air by exchanging heat between air and a heat medium. An air conditioner for a vehicle, characterized in that: 5. The air conditioner for a vehicle according to claim 4, wherein the first passage is a warm air passage for heating air by passing air flowing through the unit case through the heater core. The air conditioner for a vehicle, wherein the second passage port is a cool air passage that diverts air flowing in the unit case from the heater core.