JPH1081122A - Intake door device of air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease crew's unpleasant feeling by forming an opening part on one side in the turning direction to be completely blocked by a seat part, and constructing the peripheral edge of the other side opening part by the other side edge part where the side edge of the seat part is pressed to be blocked, and one side edge part for blocking the space up to one side seal part. SOLUTION: An intake door device 1 includes an intake door case 20 having an air intake port 5 formed on the lower surface thereof, an intake door 10 disposed in the case 20, and an outside air introduction port 7 and an inside air introduction port 8 which are opened and closed by the intake door 10. A turning central shaft 14 is fixed to the opposite sides of the case 20 in such a manner as to freely turn, and a seal part 15 is supported by an arm 11 extended from the turning central shaft 14 in the radial direction. The arm is projected from the turning central axis, and one side is connected as a driving means to an actuator or the like to transmit the turning force by a driving piece. Thus, it is possible to decrease crew's unpleasant feeling caused by leakage of air from the outside air introduction port 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake door device which selectively opens and closes an outside air inlet and an inside air inlet which open upstream of a vehicle air conditioner.

[0002]

2. Description of the Related Art Conventionally, as a control door used in a vehicle air conditioner, a "swing-type control door" disclosed in the prior art section of Japanese Utility Model Application Laid-Open No. 4-38814 has a door body with a curved normal. The door shaft and the door body are connected by a pair of arms. One arm is formed shorter than the other arm, and the door body is inclined with respect to the rotation direction. . Thus, a swing-type control door capable of efficiently closing one opening can be obtained by reducing the operation force required for opening and closing the door.

The inside / outside air switching device disclosed in Japanese Utility Model Laid-Open Publication No. 6-29908 has a pair of door bodies having a quarter-arc curved surface, which are rotatably mounted. To close the outside air introduction port, and when outside air is introduced, the outside air introduction case is displaced to close the inside air introduction port. Thereby, the influence of the ram pressure is reduced and the air is effectively introduced.

Further, the air intake structure disclosed in Japanese Utility Model Publication No. Sho 62-33604 discloses a hemispherical air intake box having a center on the axis of the fan, and a spherical inner side of the air intake box. And a spherical lid that slides and opens and closes a hole for taking in outside air and inside air. Thereby, the ventilation resistance is reduced and the fan efficiency is improved.

[0005]

However, the "swing-type control door" disclosed in the prior art section of Japanese Utility Model Laid-Open Publication No. 4-38814 can reduce the operating force required to open and close the door. Basically, for closing one opening, moving between the two openings to open and close these two openings has a problem that the sealing of one opening is deteriorated. I have.

The inside / outside air switching device disclosed in Japanese Utility Model Laid-Open Publication No. Hei 6-29908 greatly closes the space when the two door bodies are displaced into the air introduction case. This causes a problem that the space is wasted, and for example, it is necessary to further secure a space for mounting the filter.

Further, the lid disclosed in Japanese Utility Model Publication No. Sho 62-33604 has a hemispherical shape in the same direction as the turning direction, so that no force acts on the lid in the direction of the insertion hole. In order to smoothly rotate, it is necessary to take a predetermined clearance, so that there is a problem that sealing properties are poor.

Therefore, the present invention improves the operability by using a so-called Bunraco-type control door for the intake door that opens and closes the two openings, secures a mounting space for the filter, and further provides two openings. It is an object of the present invention to provide an intake door device for an air conditioner for a vehicle, which solves a problem of a swing type control door caused by opening and closing a door.

[0009]

SUMMARY OF THE INVENTION Accordingly, the gist of the present invention is to provide a case arranged on the most upstream side of an air-conditioning duct in which heat exchange means is arranged, and an outside air inlet and an inside air inlet which are opened in the case. And a pair of openings, and an intake door device for a vehicle air conditioner comprising an intake door for selectively opening and closing the pair of openings as appropriate.
A quadrature end portion rotatably fixed to an opposing surface of the case, an arm portion extending radially from each of the rotation center shaft ends, and an arm portion; And a sheet portion curved in an arc shape, both ends of which are supported, and the sheet portion has an end located at one side in the turning direction more pivotally centered than an end located at the other side in the turning direction. The other is arranged so as to be inclined with respect to the rotation direction so as to be closer to the axis, and formed such that the length in the width direction perpendicular to the rotation direction gradually decreases toward the other side in the rotation direction. A side seat portion and a one-side seat portion extending from the other-side seat portion to one side in the rotating direction, and the pair of openings are formed in the case in the rotating direction of the seat portion. Are arranged side by side along a curved surface that curves along An opening formed in direction one side,
The sheet portion is curved so as to be able to abut, and is formed with an area smaller than the area of the sheet portion, and the opening formed on the other side in the rotation direction has a peripheral edge on the peripheral side surface of the other side sheet portion. It is constituted by the other side edge portion formed in the same shape so as to be able to abut and the one side edge portion facing the one side sheet portion via a sealing means (claim 1).

Thus, according to the present invention, the seat portion of the intake door is curved in an arc shape, and the distance between one end in the turning direction of the seat portion and the center axis of rotation is the other in the turning direction. And the seat is inclined with respect to the turning direction so as to be smaller than the distance between the end of the seat and the turning center axis, and the seat is positioned on one side of the seat in the turning direction and on the other side. In addition to being constituted by the other-side sheet portion, the other-side sheet portion is formed so that the width gradually decreases toward the other side in the rotating direction. Further, the opening on one side in the rotating direction is formed to be completely closed by the seat portion, and the peripheral edge of the opening on the other side in the rotating direction is closed by the contact of the side edge of the other side sheet portion. The other side edge portion and the one side seal portion are configured by one side edge portion that is closed by a sealing means, so that the intake door is a so-called swing-type control door and two openings are provided. The above object can be achieved by enabling the opening and closing of the section.

[0011] Further, the end of the one-side sheet portion is a long side, the end located on the other side in the rotation direction of the other-side sheet portion is a short side parallel to the long side, and the other-side sheet portion is further provided. The sealing portion may be formed into a curved trapezoidal shape with a pair of sides connecting the long side and the short side forming a portion forming the remaining peripheral edge of the seal. Correspondingly, by forming the one opening portion in a similar shape slightly smaller than the sheet portion, the sheet portion can abut the entire periphery of the opening portion. Further, the other side edge forming the periphery of the other opening in the same shape as the other side sheet portion, and the one side formed at a position having a range overlapping with the long side of the one side sheet portion. A long side of the side edge portion, and sealing means is disposed at an overlapping portion between the long side of the one side sheet portion and the long side of the opening portion, and the other opening portion is formed by the sheet portion. Can be closed.

Further, the shape of the other side sheet portion may be a shape having a gradually narrowing width, and may be a semicircular arc shape, a triangular shape, a polygonal shape, or a curved shape.
In this case, the shape of the other side edge of the other opening needs to match the shape of the other side sheet portion. However, the shape of the one opening portion may be any shape as long as it is located at a position overlapping and facing the one-side sheet portion because it is sealed by the sealing means.

It is preferable that a sealing material is provided on the seat portion at a portion in contact with each opening. Thereby, the sealing performance of the seat portion can be improved.

Further, the sealing means is a sealing member formed so as to protrude from the one side sheet portion, and a sealing member formed so as to protrude from one side edge of the other opening. Claim 4) may be used.

Further, it is preferable that the one opening is an outside air inlet and the other opening is an inside air inlet. This is because the outside air inlet needs to have a higher sealing property.In extreme terms, inside air leaks due to poor sealing, and there is no problem if it is mixed with outside air. This is because when mixed with occupants, occupant discomfort may be increased.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The intake door device 1 shown in FIGS. 1 and 2 constitutes a part of a vehicle air conditioner, and is arranged on the upstream side of an air conditioning duct having a heat exchange unit. It is arranged on the side. The blower unit 2 includes a sirocco-type fan 4 provided inside a case and a brushless motor 3 for driving the fan 4, and communicates with the intake door device 1 via an air inlet 5. Things.

The intake door device 1 includes an intake door case 20 having the air intake 5 formed on the lower surface thereof, and an intake door 10 described below disposed in the case 20.
And an outside air inlet 7 and an inside air inlet 8 which are opened and closed by the intake door 10.

The intake door 10 is shown in FIGS.
A rotation center shaft 14 rotatably fixed to the opposite side surface of the case 20;
, A seal portion 15 whose both ends are supported by the arm 11, a projection extending from the rotation center shaft 14 in the axial direction of the rotation center shaft 14, one of which is an actuator or the like as a driving means. And a driving piece 13 that is connected to the power transmission and transmits the rotational power.

In order to improve the connection strength between the arm 11 and the seal portion 15 and the strength of the seal portion, a support portion 11a and a support portion 11a connected to the seal portion 11 are provided at the radial end of the arm 11. The rib 11b is formed.
Further, a seal member 16 made of an elastic material such as a urethane foam or a rubber material is provided in the seal portion 15 in order to secure the sealing property at the time of sheeting. Since the seal portion 15 is supported from both sides by the arm 11, a predetermined space can be secured between the arms 11 and 11 and below the seal portion 15, so that a filter is provided in this space. 6 can be mounted.

The seal portion 15 includes a long side (significant portion) 15a formed perpendicular to the rotation direction, a short side 15b parallel to this side, the long side 15a and the short side 15a.
b, and has a trapezoidal shape defined by a pair of side edges 15c and 15d, and the whole of the center O is decentered by a predetermined value from the center O of the rotation center shaft 14 as shown in FIG. It is curved in an arc shape having a radius R _E centered on '. Thereby, the turning radius R on the long side 15a side is obtained.
_s is smaller than the turning radius _RL on the short side 15b side.

The outside air inlet 7 opens to a curved surface 21 formed in an arc shape at the upper portion of the case 20 and communicates with the outside of the vehicle via a duct (not shown). The opening 71 of the outside air inlet 7 is located in the curved surface 21 in the direction in which the seal portion 15 rotates toward the long side 15a, and is curved so as to match the eccentric curved surface of the seal portion 15. And is formed in a shape slightly smaller than the area of the seal portion 15. by this,
When the intake door 10 rotates and moves to a position that closes the outside air inlet 7, FIGS. 6A and 6B.
As shown by, the entire circumferences 72 and 7 inside the periphery of the opening 71 are shown.
Since the seal portion 15 is in contact with 3, 74, 75 via the seal member 16, the opening 71 of the outside air inlet 7 can be completely closed.

The inside air inlet 8 is provided in parallel with the outside air inlet 7 and opens directly into the vehicle interior.
1 is provided with a grill 9. As shown in FIG. 7A, the peripheral edge of the opening 81 has a side edge 83 corresponding to the short side 15b of the seal portion 15 and the side edges 15c and 1c.
5b is located near the upper vertex of the curved surface 21 of the case 20 and side edges 82 and 84 that match at a predetermined distance from the side edge 83 so as to overlap with the vicinity of the long side 15a of the seal portion 15. It is comprised by the side edge part 85 which opposes.
The portion of the seal portion 15 facing the side edge portion 85 and having the long side 15a which is a large portion is defined as one side seal portion 90 and is surrounded by the side edge portions 82, 83, 84. That portion is used as the other side seal portion 91.

Thus, when the intake door 10 rotates and moves to a position where the inside air inlet 8 is closed, the side edges 82, 83, 84
As shown in FIG. 7B, the short side 15b and the side sides 15c and 15d are abutted and sealed via the sealing member 16, and the side edge 85 side is shown in FIG. 6C, for example. As described above, the sealing member 16 is protruded toward the predetermined value side edge portion 85 side to form the projection 16a as a sealing means, thereby sealing the opening portion 81 of the inside air introduction port 8, whereby the entire periphery is sealed. That is what it is.

As shown in FIG. 6 (d), a seal piece 86 is provided which protrudes from the end of the side edge 85 toward the seal portion 15.
The gap between the seal 5 and the seal portion 15 may be sealed.

In this embodiment, the sealing portion 1
The reason why the outside air inlet 7 is formed on the side where the radius from the center O is shorter in the rotation direction 5 is that in the intake door 10 as the swing type control door, the seal on the side of the outside air inlet 7 is strong. Because it is a structure that becomes
Leakage of air from the inside air inlet 8 side does not cause much problem, but air leak from the outside air inlet 7 side may increase occupant discomfort.

Further, in the above embodiment, the shape of the seat portion 15 is an equilateral trapezoidal shape, and
And the inside air inlet 8 has a shape corresponding thereto, but in the shape of the seat portion 15, a portion corresponding to the other side seat portion 91 has a size in a width direction perpendicular to the rotation direction in the rotation direction. Any shape may be used as long as it gradually decreases toward the other side, and may be, for example, an arc, a triangle, a polygon, or a curve. Further, the shape of the one-side seal portion 90 is not particularly limited, as long as it has a portion overlapping the side edge portion 85.

The opening 71 of the outside air inlet 7 is
The shape is not particularly limited as long as the area is smaller than the area of the sheet part 15 as long as the sheet part 15 can be brought into contact with the entire circumference. Further, a side edge 8 of the inside air inlet 8 is provided.
2, 83, 84 may have the same shape as the corresponding portion of the other side sheet portion 91.

[0028]

As described above, according to the present invention, the so-called swing-type control door allows the two openings to be selectively opened and closed as appropriate, so that the operability of the intake door is improved while the intake is improved. It will be able to fulfill a sufficient function as a door.

Further, since the arm supports the seal portion of the intake door from both sides, a predetermined space can be secured between the arms, so that a filter can be mounted in this space.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an intake door device and a blower unit according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing an intake door device and a blower unit according to the embodiment of the present invention.

FIG. 3 is a side view of the intake door.

FIG. 4 is a plan view of an intake door.

FIG. 5 is a front view of an intake door.

FIG. 6A is an explanatory view showing a contact state of an opening of an outside air introduction port, and FIG. 6B is a partially enlarged cross-sectional view showing a state in which a seal portion contacts the opening. .

FIG. 7A is an explanatory view showing a contact state of an opening of an inside air introduction hole, and FIG. 7B is a partially enlarged cross-sectional view showing a sealing state of the opening and a sealing portion; c) is a partially enlarged sectional view showing one embodiment of the sealing means,
(D) is a partially enlarged sectional view showing another embodiment of the sealing means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intake door apparatus 2 Blower unit 7 Outside air inlet 8 Inside air inlet 10 Intake door 11 Arm 15 Seal part 16 Seal member

Claims (4)

[Claims] 1. A case arranged on the most upstream side of an air conditioning duct in which a heat exchange means is arranged, a pair of openings which are opened in the case and serve as an outside air inlet and an inside air inlet, and the pair of openings An intake door device for a vehicle air conditioner comprising an intake door that selectively opens and closes a portion as appropriate, wherein the intake door is rotatably fixed to an opposing surface of the case. An arm extending radially from each end of the rotation center shaft, and an arc-shaped curved sheet whose both ends are supported by the arm. The end located in one of the directions is inclined with respect to the rotation direction so as to be closer to the rotation center axis than the end located in the other of the rotation directions, and the other end in the rotation direction Width direction perpendicular to the rotation direction toward The other side sheet portion is formed so that the length of the second side portion becomes gradually smaller, and the one side sheet portion extending from the other side sheet portion to one side in the rotating direction. The portion is arranged in the case along a curved surface that is curved along the turning direction of the seat portion, and an opening formed on one side in the turning direction allows the seat portion to abut. The opening is formed to have an area smaller than the area of the seat portion while being curved, and the opening formed on the other side in the pivoting direction is formed in the same shape so that the peripheral side surface of the other side sheet portion can abut. An intake door device for an air conditioner for a vehicle, comprising: a second side edge portion to be formed; and a first side edge portion facing the one side sheet portion via sealing means. 2. The intake door device for a vehicle air conditioner according to claim 1, wherein a sealing material is provided in a portion of the seat portion that contacts each opening. 3. The sealing means is formed so as to protrude from the one side seat portion, and when the intake door moves to a position closing the other opening portion, the one side edge portion of the other opening portion. 3. The intake door device for a vehicle air conditioner according to claim 1, wherein the intake door device is a seal member that comes into contact with the air conditioner. 4. The sealing means is formed so as to protrude from one side edge of the other opening, and when the intake door moves to a position for closing the other opening, the one-side sealing part is provided. 3. The intake door device for a vehicle air conditioner according to claim 1, wherein the intake door device is a seal member that comes into contact with the air conditioner.