JP2005319914A - Air-conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioner for a vehicle capable of restraining the pressure loss and capable of securing sealing efficiency even when a door for opening and closing an air passage is constituted by a plurality of cantilever band plate doors. <P>SOLUTION: A rotary shaft side edge 75a of an upstream side surface 75 of a door plate part 74 of the band plate door 70 is extended to the outer peripheral surface tangential direction of a rotary shaft 71, and a reverse rotary shaft side edge 76a of a downstream side surface 76 of the door plate part 74 of the adjacent band plate door 70 is overlapped in parallel with respect to the rotary shaft side edge 75a of the upstream side surface 75 when the opening and closing door 51 closes the air passage. Therefore, sealing efficiency can be secured without providing a supporting plate causing the pressure loss in correspondence with the respective door plate part, which is different from conventional ones. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle air conditioner, and more particularly to an open / close door that opens and closes an air passage in an air conditioning duct.

As a prior art, there is a vehicle air conditioner disclosed in Non-Patent Document 1 below. In this vehicle air conditioner, an air mix door is provided with a support plate having a plurality of ventilation openings (air passages) and a plurality of cantilever plate doors attached to the ventilation openings so that the ventilation openings can be opened and closed (on one side in the radial direction of the rotating shaft). And a door provided with a belt-like door portion). And when a cantilever strip board door closes a ventilation opening, it seals in the area | region with which the support plate and the strip board door overlapped.
NIPPON ELECTRONICS ENGINEERING REPORT No. 40-071 Issued March 15, 1985

  However, in the above-described conventional vehicle air conditioner, when the cantilever plate door opens the ventilation opening, the support plate becomes a ventilation resistance, and the pressure loss of the passing air increases. On the other hand, when the support plate is abolished for the purpose of suppressing the pressure loss, there is a problem that it is difficult to ensure the sealing performance between the plurality of cantilevered doors when the ventilation port is closed.

  The present invention has been made in view of the above points, and ensures sealing performance while suppressing pressure loss even when the door for opening and closing the air passage is constituted by a plurality of cantilever plate doors. An object of the present invention is to provide a vehicle air conditioner that can perform the above-described operation.

In order to achieve the above object, in the invention described in claim 1,
An air conditioning duct (20) for forming an air passage (13, 14) for guiding air into the passenger compartment;
A vehicle air conditioner provided in an air conditioning duct (20) and provided with an open / close door (51, 52) for opening and closing an air passage,
The open / close door (51) is provided on one side in the radial direction of the rotation shaft (71) and the rotation shaft (71), and the first surface (75) and the second surface (76) form both surfaces of the rotation shaft. A strip plate door (70) having a strip plate door plate portion (74) extending in the (71) direction is formed by arranging a plurality of strip plate doors in a direction substantially orthogonal to the rotation shaft (71),
The rotating shaft side edge portion (75a) of the first surface (75) of the door plate portion (74) extends in the tangential direction of the outer peripheral surface of the rotating shaft (71),
When the open / close door (51) closes the air passage (13), the strip plate door (70) of the door plate portion (74) adjacent to the rotary shaft side edge portion (75a) of the first surface (75). The second surface (76) is characterized in that the counter-rotating shaft side edge (76a) is overlapped in parallel.

  According to this, the rotating shaft (71) does not protrude from the first surface (75) rotating shaft side edge (75a) of the door plate portion (74). Therefore, with respect to the first surface (75) rotation shaft side edge portion (75a), the second surface (76) of the adjacent strip plate door (70) door plate portion (74) counter rotation shaft side edge portion ( When 76a) is overlapped in parallel, the first surface (75) rotation shaft side edge (75a) and the second surface (76) opposite of the adjacent strip plate door (70) door plate portion (74). The rotary shaft side edge (76a) can be in contact with the surface to form a seal structure.

  In this way, it is possible to ensure the sealing performance between the plurality of strip plate doors (70) without providing a support plate or the like corresponding to each door plate portion (74). That is, it is possible to ensure sealing performance while suppressing pressure loss.

  Further, in the invention described in claim 2, the rotating shaft (71) has a defective portion (72) formed on the second surface (76) side in the region where the door plate portion (74) is provided. It is characterized by that.

  According to this, when the diameter of the rotating shaft (71) is larger than the thickness of the door plate portion (74) and the rotating shaft (71) protrudes from the second surface (76) of the door plate portion (74). When the open / close door (51) opens the air passage (13), air can be circulated through the defective portion (72). Therefore, the pressure loss can be further reduced.

  Moreover, in invention of Claim 3, a some strip | belt-plate door (70) is connected by the connection member (80), and it interlock | cooperates at the time of opening and closing of an air channel | path (13).

  According to this, it is not necessary to control each of the plurality of strip plate doors (70) when the air passage (13) is opened and closed.

  In the invention according to claim 4, the plurality of strip plate doors (70) have the first surface (75) on the upstream side of the air flow when the open / close door (51) closes the air passage (13). It is characterized by being arranged like this.

  According to this, when the open / close door (51) closes the air passage (13), wind pressure is applied to the first surface (75) of the strip plate door (70) and the door plate portion (74). Accordingly, the first surface (75) of the strip plate door (70) door plate portion (74) and the second rotary shaft side edge portion (75a) and the second strip plate door (70) door plate portion (74) second side. In the contact seal surface between the surface (76) and the counter-rotating shaft side edge portion (76a), the seal surface pressure can be increased according to the wind pressure to ensure the sealing performance.

  In the invention according to claim 5, the flexible member (78A) is provided on the counter-rotating shaft side edge (76a) of the second surface (76) of the strip plate door (70) and the door plate portion (74). ) Is provided.

  According to this, the 1st surface (75) rotating shaft side edge part (75a) of a strip board door (70) door board part (74), and the 1st surface of an adjacent strip board door (70) door board part (74). In the contact surface between the second surface (76) and the counter-rotating shaft side edge (76a), the flexible member (78A) can be used as a sealing member to reliably form a sealing structure.

Further, in the invention described in claim 6, as in the invention described in claim 4,
When the open / close door (51) closes the air passage (13), the first surface (75) of the plurality of strip plate doors (70) is disposed on the upstream side of the air flow.
On the second surface (76) of the strip plate door (70) door plate portion (74), a film member (78) extending further to the counter-rotating shaft side than the end portion of the counter-rotating shaft side is disposed. It is a feature.

  According to this, when the opening / closing door (51) closes the air passage (13), the film member (2) extending from the second surface (76) counter-rotating shaft side end of the strip plate door (70) door plate (74) 78) is pressed against the first surface (75) of the adjacent strip plate door (70) door plate portion (74) by wind pressure. Accordingly, the first surface (75) of the strip plate door (70) door plate portion (74) and the second rotary shaft side edge portion (75a) and the second strip plate door (70) door plate portion (74) second side. The sealing property at the contact surface between the surface (76) and the counter-rotating shaft side edge (76a) can be ensured.

  Moreover, since the film member (78) is thin and the increase in the thickness of the door plate part (74) accompanying the disposition of the film member (78) can be suppressed, the open / close door (51) opens the air passage (13). When opened, pressure loss can be prevented from increasing.

  Moreover, in invention of Claim 7, when the opening-and-closing door (51) closes an air path (13) among several strip board doors (70), the rotating shaft (71) and the said rotating shaft (71) The strip plate door (70B) arranged on the outermost side on the rotating shaft (71) side in the direction of alignment with the door plate portion (74) provided on the door plate portion (74) in the radial direction of the rotating shaft (71). ) It is characterized in that a strip-like subdoor plate part (79) extending in the direction of the rotation axis (71) is provided on the substantially opposite side to the arrangement side.

  According to this, in the opening / closing door (51) composed of a plurality of strip plate doors (70) arranged side by side, a strip plate-like shape is formed at a portion where the rotation shaft (71) is an end portion of the strip plate door (70) in the juxtaposition direction. A sub door plate part (79) is provided. Therefore, a seal structure can be formed by the sub door plate portion (79) on the side where the rotating shaft (71) forms an end portion.

  In the invention according to claim 8, when the plurality of strip plate doors (70), the first surface (75) is on the upstream side of the air flow when the open / close door (51) closes the air passage (13). In such a case, the width (W2) of the sub door plate portion (79) is smaller than the width (W1) of the door plate portion (74) provided on the same rotation shaft (71). It is said.

  According to this, the urging force applied to the door plate portion (74) by the wind pressure is larger than the urging force applied to the sub door plate portion (79). Accordingly, the first surface (75) of the strip plate door (70) door plate portion (74) and the second rotary shaft side edge portion (75a) and the second strip plate door (70) door plate portion (74) second side. It can suppress that the sealing performance in a contact surface between surface (76) counter-rotating-shaft side edge parts (76a) falls by providing a subdoor board part (79).

  In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram schematically showing the configuration of a vehicle air conditioner according to a first embodiment to which the present invention is applied.

  As shown in FIG. 1, a blower 19 that is a fan driven by a blower motor 11 that generates an air flow in the air conditioning duct 20 is disposed in the air conditioning duct 20. Here, the blower motor 11 and the blower 19 constitute a blower. The evaporator 12 is disposed downstream of the blower 19 so as to block the air conditioning duct 20, and the evaporator 12 cools the air flow blown out by the blower 19.

  Further, a heater core 13 that is a heat exchanger for heating according to the present embodiment is disposed in the downstream portion of the evaporator 12 so as to block the air conditioning duct 20 by about half, and the heater core 13 reheats the cold air that has passed through the evaporator 12. It is like that.

  In the upstream portion of the heater core 13, air that adjusts the temperature of the air blown into the vehicle interior by switching the air volume ratio between the air passing through the heater core 13 (hot air) and the air passing through the bypass passage 14 bypassing the heater core 13 (cold air). A mix door 50 is provided.

  The air mix door 50 of the present embodiment is provided on the upstream side of the heater core 13 and opens and closes the air-side flow path of the heater core 13, and is provided on the upstream end of the bypass passage 14 to open and close the bypass passage 14. An opening / closing door 52 is included. The heater core 13 (substantially the air-side flow path of the heater core 13) and the bypass passage 14 correspond to the air passage in the present embodiment.

  Both the open / close doors 51 and 52 have substantially the same structure, and are opened and closed by a common driving means (for example, a servo motor or a manual operation lever) via a link mechanism (not shown). When the opening is decreased from the open state, the opening of the other open / close door is increased from the closed state. The structure of the open / close doors 51 and 52 is a main part of the present invention and will be described in detail later.

  In the upstream part of the blower 19 of the air conditioning duct 20, an inside air intake port 4 for taking in the inside air and an outside air inlet port 5 for taking in the outside air are provided, and an inside / outside air switching door 6 for switching a ratio of taking in the inside air and the outside air is arranged. ing.

  On the other hand, at the most downstream side of the air conditioning duct 20, a defroster outlet through which hot air that has passed through the heater core 13 and cold air that has passed through the bypass passage 14 blows out the air mixed in the air mix unit 25 toward the windshield. 30, a defroster discharge port 36 to be sent to 30, a face discharge port 37 to be sent to the face blower port 31 that blows toward the upper body of the occupant, and a foot discharge port 38 to be sent to the foot blower port 32 to be blown toward the feet of the occupant. .

  And the air volume sent out from each of these discharge ports is adjusted by the defroster door 33, the face door 34, and the foot door 35, respectively. The defroster door 33, the face door 34, and the foot door 35 are blowing mode doors.

  Next, the configuration of the open / close doors 51 and 52 constituting the air mix door 50 will be described. Since both the open / close doors 51 and 52 of the present embodiment differ only in the number of band plate doors 70 to be described later (for example, 4 open / close doors 51 and 3 open / close doors 52) The description will be omitted, and the description of the open / close door 52 will be omitted.

  FIG. 2A is a front view of the open / close door 51 as viewed from the upstream side of the air flow, and FIG. 2B is a front view showing a single strip door 70 used for the open / close door 51. 3 is a cross-sectional view taken along line AA of FIG. 2A, in which FIG. 3A shows an open state and FIG. 3B shows a closed state. 4A and 4B are cross-sectional views taken along the line BB in FIG. 2A, where FIG. 4A shows an open state and FIG. 4B shows a closed state.

  As shown in FIG. 2A, the open / close door 51 includes four resin-made strip plate doors 70 arranged in a vertical direction in the figure in a resin-made frame body 60. The frame 60 and the strip door 70 are formed of different materials (for example, one is polypropylene resin and the other is acrylonitrile butadiene styrene resin), and suppresses the generation of operating noise when the strip door 70 rotates. .

  As shown in FIG. 2B, the band plate door 70 is provided on a rotation shaft portion (rotation shaft) 71 that is a shaft portion serving as a rotation center, and on one side (lower side in the drawing) in the radial direction of the rotation shaft portion 71. 2 is a cantilever band plate door having a strip plate-like door plate portion 74 extending in the extending direction of the rotary shaft portion 71. As shown in FIG. Are arranged in parallel to each other.

  As is clear from FIGS. 3 and 4, the door plate portion 74 is on the upstream side of the air flow from the center of the rotation shaft portion 71 (the front surface side of FIG. 2, the closed state shown in FIGS. 3B and 4B). The upstream side surface (corresponding to the first surface) 75 of the door plate portion 74 coincides with the outer peripheral surface tangent of the rotary shaft portion 71. ing. That is, the upstream side surface 75 of the door plate portion 74 extends in the tangential direction of the outer peripheral surface of the rotating shaft portion 71.

  Since the door plate portion 74 is formed offset from the center of the rotary shaft portion 71 to the upstream side of the air flow, the rotary shaft portion 71 protrudes from the downstream side surface (corresponding to the second surface) 76 of the door plate portion 74. 2 (b), 4 (a), and 4 (b), the rotation shaft portion 71 has a missing portion 72 on the downstream side surface 76 side in most of the range where the door plate portion 74 is provided. Is formed. In this embodiment, the defect | deletion part 72 has reached the downstream side surface 76, and the substantial rotating shaft part 71 was provided only in the both-ends side of the door board part 74, as shown in FIG.2 (b). It has become.

  As shown in FIGS. 3 and 4, a film member 78 made of resin (made of polyethylene terephthalate resin in this example) is attached to the downstream side surface 76 of the door plate portion 74. As is apparent from FIGS. 2 to 4, the film member 78 extends so as to extend further to the counter-rotating shaft side (tip end side) than the counter-rotating shaft side end portion (tip end portion) of the door plate portion 74. Further, the door plate portion 74 is extended so as to extend further to the end portion side than the end portion in the longitudinal direction.

  As shown in FIG. 2A, both end portions of the rotary shaft portion 71 of the band plate door 70 having the above-described configuration are inserted into the insertion holes 61 on the left and right sides of the frame body 60. It is disposed so as to be rotatable with respect to the frame body 60. The formation pitch of the insertion holes 61 is smaller than the width of the strip plate door 70 and the door plate portion 74. When the strip plate door 70 is in the closed state, as shown in FIG. The counter-rotating shaft side edge portion 76 a of the downstream side surface 76 of the adjacent strip plate door 70 door plate portion 74 overlaps with the rotating shaft side edge portion 75 a of the upstream surface 75 of the 74 side.

  Further, the frame body 60 is formed with projecting seal plates 62 on the inner surfaces of both the left and right sides and the lower side in FIG. 2A, and the left and right edges of each band plate door 70 door plate 74 and It overlaps with the front-end | tip part (counter-rotary-axis side edge part) of the lowermost band board door 70A in the figure among the band board doors 70. FIG.

  As shown in FIG. 2 (a), one rotary shaft 71 of the lowermost band plate door 70A in the figure protrudes from the frame body 60, and the frame body 60 is connected to the air conditioning duct 20 as shown in FIG. When it is fitted inside, the outside of the air conditioning duct 20 is connected to the aforementioned link mechanism (not shown).

  In addition, engagement pins 77 are provided at both ends in the left-right direction (both ends in the longitudinal direction) of FIG. As shown in FIG. 2 (a), the engagement pins 77 of the four strip plate doors 70 are engaged with a common connection plate (connection member) 80, and the strip plate door protrudes outside the air conditioning duct 20. When rotational force is input to the rotating shaft portion 71 of 70A, as shown in FIGS. 3A and 3B, all the strip plate doors 70 are interlocked at the same angle.

  Therefore, both surfaces (upstream / downstream side surfaces 75 and 76) of the door plate portion 74 of the four strip plate doors 70 are always rotated while maintaining a mutual parallel state regardless of the door opening degree.

  Note that the uppermost strip door 70B in FIG. 2A among the strip doors 70 (the rotation shaft portion 71 and the rotation of the four strip doors 70 when the open / close door 51 is closed). As shown in FIG. 4B, the strip plate door 70 </ b> B arranged on the outermost side on the rotating shaft portion 71 side in the direction of alignment with the door plate portion 74 provided on the shaft portion 71 is the door plate portion 74. Is extended to the upper surface of the rotary shaft portion 71 in the drawing so that the clearance between the uppermost rotary shaft portion 71 and the frame body 60 in the side-by-side direction of the strip plate door 70 is extremely small to ensure sealing performance. It has become.

  Next, the operation of the air conditioner of the present embodiment will be described based on the above configuration.

  As is well known, the vehicle air conditioner is based on the operation states of various operation members provided on the air conditioning operation panel, and the positions (openings) of the doors 6, 33, 34, 35, and 50 and the blower air volume. Is controlled.

  An inside / outside air mode is formed by the inside / outside air switching door 6 of the inside / outside air switching box (inside / outside air switching means), and inside air or outside air is introduced into the blower. The blower blows out air introduced from the inside / outside air switching means and blows air in the direction of the evaporator 50.

  The air that has passed through the evaporator 12 and has been cooled is heated by the heater core 13 in a desired amount according to the opening state of the open / close doors 51 and 52 that constitute the air mix door 50, and then the heated hot air and the bypass passage 14 are passed through. The cold air that has passed is mixed in the air mix unit 25. Then, in accordance with the blowing mode formed by the defroster door 33, the face door 34, and the foot door 35, the conditioned air is blown out from any one or a plurality of the discharge ports 36, 37, 38.

  When the maximum heating state is set, as shown in FIG. 4 (a), the open / close door 51 interlocks each strip plate door 70 to a fully open state. Then, as the target blowout temperature decreases, the band doors 70 are interlocked to reduce the opening, and when the maximum cooling state is set, as shown in FIG. Fully closed.

  At this time, the strip plate door 70 door plate portion 74 adjacent to the rotary plate side edge portion 75a of the upstream side surface 75 of the door plate portion 74 of the strip plate door 70 and the seal plate portion 62 of the frame body 60 excluding the strip plate door 70B. The counter-rotating shaft side edge portion 76a of the downstream side surface 76 is overlapped in parallel. And the projecting site | part from the door plate part 74 edge part of the film member 78 stuck to each downstream side surface 76 is also the adjacent strip plate door 70 door plate part 74 upstream side surface 75 and the seal plate part 62 of the frame 60. In close contact with the wind pressure of the blown air.

  Thereby, when the maximum cooling state is set, the air passage connected to the heater core 13 is completely closed by the four strip doors 70.

  As described above, the opening / closing door 52 forms an opening / closing state opposite to the opening / closing door 51 between the maximum heating state and the maximum cooling state, and when the maximum cooling state is set, When the air passage connected to the bypass passage 14 is fully opened by the three strip plate doors 70 and the maximum heating state is set, the air passage connected to the bypass passage 14 is completely blocked by the three strip plate doors 70. The

  According to the above-described configuration and operation, when the open / close door 51 closes the air passage to the heater core 13, the adjacent strip plate door with respect to the rotary shaft side edge portion 75 a of the upstream side surface 75 of the strip plate door 70 door plate portion 74. The counter-rotating shaft side edge portion 76a of the downstream side surface 76 of the 70 door plate portion 74 overlaps in parallel and forms a seal structure by surface contact rather than line contact. Therefore, it is easy to ensure sealing performance without providing a support plate or the like corresponding to each door plate portion as in the prior art. That is, the sealing performance can be secured while suppressing the pressure loss by eliminating the support plate and the like.

  At this time, the wind pressure of the blast air is applied to the upstream side surface 75 of each band plate door 70 and the door plate portion 74, and the seal surface pressure of the seal portion in surface contact can be increased. Furthermore, the film member 78 protrudingly formed at the end portion of the door plate portion 74 is brought into close contact with the upstream side surface 75 of the adjacent door plate portion 74 and the frame body 60 seal plate portion 62 by the wind pressure of the blown air. Thereby, even if there exists a part with low surface pressure in the sealing structure by the said surface contact, the sealing performance of this part can be improved by the contact | adherence structure of the film member 78. FIG.

  Further, not only the pressure loss is suppressed by the abolition of the support plate or the like, but also the missing portion 72 is provided on the downstream side surface 76 side in the range where the door plate portion 74 of the rotating shaft portion 71 is provided, and the open / close door 51 is opened. When it becomes, it can distribute | circulate air also to the defect | deletion part 72 and can further reduce a pressure loss.

  Further, since the film member 78 provided for improving the sealing performance is thin, it is possible to prevent an increase in pressure loss even when the open / close door 51 is opened.

  The same effect can be obtained in the open / close door 52 that opens and closes the bypass passage 14.

(Second Embodiment)
Next, a second embodiment will be described based on FIG.

  The second embodiment is different from the first embodiment in the configuration of the strip door 70B in which the rotation shaft portion 71 is disposed at the end. In addition, about the part similar to 1st Embodiment, the same code | symbol is attached and the description is abbreviate | omitted.

  As shown in FIG. 5, in the present embodiment, the uppermost strip plate door 70 </ b> B in the drawing is substantially the same as the door plate portion 74 on the side opposite to the side where the door plate portion 74 is disposed in the radial direction of the rotating shaft 71. Is provided with a belt-like sub door plate portion 79 extending in the direction of the rotation axis 71 (the front and back direction of the paper). The width W2 of the sub door plate portion 79 is smaller than the width W1 of the door plate portion 74.

  The frame 60 also has a seal plate 62 formed inside the side corresponding to the sub door plate 79. When the open / close door 51 is closed, the sub door plate 79 is also in close contact with the seal plate 62. Thus, a seal structure by surface contact is formed. Therefore, the sealing performance between the rotary shaft 71 at the top in the figure and the frame body 60 in the direction in which the strip doors 70 are juxtaposed is reliably ensured by using a surface contact sealing surface instead of reducing the clearance. can do.

  Further, since the width W1 of the door plate portion 74 is larger than the width W2 of the sub door plate portion 79, the urging force applied to the door plate portion 74 by the wind pressure of the blown air is more than the urging force applied to the sub door plate portion 79. growing. Therefore, in the contact surface between the downstream side surface 76 counter-rotating shaft side edge portion 76a of the strip plate door 70B door plate portion 74 and the upstream side surface 75 rotational shaft side edge portion 75a of the adjacent strip plate door 70 door plate portion 74. It can suppress that sealing performance falls by providing the subdoor board part 79. FIG.

  In the present embodiment, illustration and description of the film member 78 are omitted.

(Other embodiments)
In each said embodiment, although the door board part 74 of the strip board door 70 was flat form, it is not limited to this. For example, as shown in FIG. 6, even if the door plate portion is bent in a dogleg shape, the rotary shaft side edge portion 75 a of the upstream side surface 75 of the door plate portion 74 extends in the tangential direction of the outer peripheral surface of the rotary shaft 71. When the open / close door 51 closes the air passage 13, the counter-rotating shaft side edge portion of the downstream side surface 76 of the adjacent strip plate door 70 door plate portion 74 with respect to the rotating shaft side edge portion 75 a of the upstream side surface 75. What is necessary is just to be 76a overlapped in parallel.

  Further, in each of the above embodiments, the belt plate door 70 has the diameter of the rotation shaft portion 71 larger than the thickness of the door plate portion 74, but the diameter of the rotation shaft portion 71 is the door plate portion 74 as shown in FIG. It may be equivalent to the thickness of. 7, when the rotary shaft side edge 75a of the upstream side surface 75 of the door plate portion 74 extends in the tangential direction of the outer peripheral surface of the rotary shaft 71 and the open / close door 51 closes the air passage 13. The counter-rotation shaft side edge portion 76a of the downstream side surface 76 of the adjacent strip plate door 70 door plate portion 74 is overlapped in parallel with the rotation shaft side edge portion 75a of the upstream side surface 75.

  In the above embodiments, the number of strip plate doors 70 arranged in parallel is four for the open / close door 51 and three for the open / close door 52, but a plurality of strip plate doors are juxtaposed. If there is, it is not limited to this. For example, as shown in FIG. 8, two belt plate doors 70 may be provided side by side.

  Moreover, in each said embodiment, although the film member 78 was employ | adopted as a sealing member, although the pressure loss at the time of an open state increases a little from the film member 78, you may use a flexible member as a sealing member. For example, as shown in FIG. 9, a flexible member layer 78A made of urethane foam resin may be formed on the downstream side surface 76 of the door plate portion 74 as a seal member. In addition, as shown in FIG. 10, a flexible member layer 78B made of rubber or thermoplastic elastomer may be formed as a seal member so as to cover the front end portion (the counter rotation shaft side portion) of the door plate portion 74. These sealing members only need to be provided at least on the counter-rotating shaft side edge portion 76 a of the downstream side surface 76 of the door plate portion 74.

  Further, if a sufficient sealing property can be ensured without forming the seal member, the seal member can be eliminated. According to this, it is possible to suppress the pressure loss as compared with the case where the seal member is formed.

  In each of the above embodiments, when the open / close door opens the air passage, the strip plate door 70 is rotated to the upstream side of the air flow. The configuration may be reversed.

  In each of the above embodiments, the plurality of strip plate doors 70 are assembled to the frame body 60 and disposed in the air conditioning duct 20. However, the plurality of strip plate doors 70 are directly assembled to the air conditioning duct 20. May be.

  In each of the above-described embodiments, the example in which the opening / closing door formed of the plurality of strip plate doors 70 is applied to the opening / closing doors 51 and 52 constituting the air mix door 50 has been described. The present invention is effective even when applied to. For example, it may be applied to an inside / outside air switching door, or may be applied to a blowing mode door.

1 is a schematic configuration diagram schematically showing a configuration of a vehicle air conditioner in a first embodiment to which the present invention is applied. (A) is the front view which looked at the opening / closing door 51 from the air flow upstream, (b) is the front view which shows the strip | belt-plate door 70 single-piece | unit used for the opening / closing door 51. FIG. It is the sectional view on the AA line of Fig.2 (a), (a) is an open state, (b) is a figure which shows a closed state. It is a BB sectional view of Drawing 2 (a), (a) is an open state, and (b) is a figure showing a closed state. It is principal part sectional drawing in 2nd Embodiment, and is a figure which shows a closed state. It is principal part sectional drawing in other embodiment, and is a figure which shows a closed state. It is principal part sectional drawing in other embodiment, and is a figure which shows a closed state. It is principal part sectional drawing in other embodiment, and is a figure which shows a closed state. It is principal part sectional drawing in other embodiment, and is a figure which shows a closed state. It is principal part sectional drawing in other embodiment, and is a figure which shows a closed state.

Explanation of symbols

13 Heater core (air side flow path is air passage)
14 Bypass passage (air passage)
20 Air conditioning duct 50 Air mix door 51, 52 Open / close door 70, 70A, 70B Strip plate door 71 Rotating shaft (rotating shaft)
72 missing portion 74 door plate portion 75 upstream side surface (first surface)
75a Rotating shaft side edge of upstream side surface 76 Downstream side surface (second surface)
76a Anti-rotation shaft side edge portion of downstream side surface 78 Film member 78A, 78B Flexible member 79 Sub door plate portion 80 Connection plate (connection member)
W1 Width of door plate part W2 Width of sub door plate part

Claims (8)

An air conditioning duct (20) for forming an air passage (13, 14) for guiding air into the passenger compartment;
A vehicle air conditioner provided in the air conditioning duct (20) and provided with open / close doors (51, 52) for opening and closing the air passage,
The open / close door (51) is provided on a rotary shaft (71) and one radial side of the rotary shaft (71), and the first surface (75) and the second surface (76) form both surfaces. A plurality of strip plate doors (70) having a strip plate-like door plate portion (74) extending in the direction of the rotational axis (71) are arranged in a direction substantially orthogonal to the rotational shaft (71),
The rotating shaft side edge (75a) of the first surface (75) extends in the tangential direction of the outer peripheral surface of the rotating shaft (71),
When the open / close door (51) closes the air passage (13), the second door of the strip door (70) adjacent to the rotary shaft side edge (75a) of the first surface (75). The vehicle air conditioner characterized in that the counter-rotating shaft side edge (76a) of the surface (76) is overlapped in parallel.   The said rotating shaft (71) is a defect | deletion part (72) formed in the said 2nd surface (76) side in the area | region in which the said door board part (74) was provided. The vehicle air conditioner described in 1.   The vehicular air conditioner according to claim 1 or 2, wherein the plurality of strip plate doors (70) are connected by a connecting member (80) and interlock when the air passage (13) is opened and closed.   The plurality of strip plate doors (70) are arranged such that the first surface (75) is on the upstream side of the air flow when the open / close door (51) closes the air passage (13). The vehicle air conditioner according to any one of claims 1 to 3.   The flexible member (78A) is disposed on the counter-rotating shaft side edge (76a) of the second surface (76), according to any one of claims 1 to 4. The vehicle air conditioner described in 1.   The vehicle air conditioner according to claim 4, wherein a film member (78) extending further to the counter-rotating shaft side than the end portion of the counter-rotating shaft side is disposed on the second surface (76). apparatus.   Of the plurality of strip plate doors (70), the opening / closing door (51) closes the air passage (13), and the door shaft provided on the rotation shaft (71) and the rotation shaft (71). The strip plate door (70B) disposed on the outermost side on the rotating shaft (71) side in the arrangement direction with the portion (74) is disposed on the door plate portion (74) arrangement side in the rotating shaft (71) radial direction. The vehicular vehicle according to any one of claims 1 to 6, further comprising a strip plate-like sub door plate portion (79) extending in a direction opposite to the rotation axis (71). Air conditioner. The plurality of strip doors (70) are disposed such that the first surface (75) is on the upstream side of the air flow when the open / close door (51) closes the air passage (13),
The said sub door board part (79) is smaller than the width | variety (W1) of the said door board part (74) provided in the same rotating shaft (71) in width | variety (W2). Vehicle air conditioner.

Images