WO2019078187A1

WO2019078187A1 - Vehicular air conditioning device

Info

Publication number: WO2019078187A1
Application number: PCT/JP2018/038439
Authority: WO
Inventors: 久善吉崎; 荒木　大助; 長野　秀樹; 豊七間
Original assignee: 株式会社ヴァレオジャパン
Priority date: 2017-10-19
Filing date: 2018-10-16
Publication date: 2019-04-25
Also published as: JP2019077202A

Abstract

[Problem] To provide a vehicular air conditioning device with a technology which prevents air from leaking as a result of insufficient strength in a sliding door. [Solution] A vehicular air conditioning device (1) includes: a case (11) having an inner space in which ventilation air flows; a plate-like sliding door (20) slidably disposed in the inner space; racks (24) having multiple teeth which project from the sliding door towards the upstream side and which are arranged in the sliding direction; a rotation drive part (23) that includes a shaft (25) and pinions (26), the shaft being rotatably supported by the case on the upstream side of the sliding door, and the pinions rotating integrally with the shaft and engaging with the racks; downstream-side guide rails (21) which are formed on the case in a planar shape so as to extend in the sliding direction on the downstream side of the sliding door, and which slidably support the sliding door; and air leak prevention sections which prevent air leaks in the spaces between the sliding door and the downstream-side guide rails.

Description

Vehicle air conditioner

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle provided with a slide door for adjusting a blowing air.

Conventionally, in a thin plate-like slide door used for a vehicle air conditioner, vibration or air leak may occur due to insufficient strength. As a preventive measure, for example, there is one described in Patent Document 1.

The present invention has a case forming an air passage, and a plate-like portion slidably disposed in the case for the purpose of suppressing vibration of both end portions in the moving direction of the slide door, and the plate-like portion A slide door for opening and closing an air passage, a wind-up side wall portion formed in the case so as to extend in the moving direction of the plate-like portion on the windward side of the plate-like portion, and a wind-up on the windward side of the plate-like portion It has a downwind side wall formed in the case to face the side wall, and has a guide groove for guiding the movement of the plate by the upwind side wall and the downwind side wall, and the curvature of the plate in a single state The radius is set larger than the radius of curvature of the upwind side wall and the radius of curvature of the downwind side wall, and when the plate is disposed in the case, the intermediate portion in the moving direction of the plate is in contact with the upwind side wall. And both ends of the plate-like part in the moving direction are downwind By contacting the wall, the plate-like portion is elastically deformed, and the slide door has a gear mechanism for driving the plate-like portion, and the gear mechanism is provided on the plate-like portion so as to extend in the moving direction of the plate-like portion. It is characterized in that a portion of the plate-like portion outside in the width direction of the rack is inserted between the upwind side wall portion and the downwind side wall portion.

According to this, the intermediate portion in the moving direction of the plate portion is pressed against the upwind side wall portion by its own elastic deformation force, and both end portions in the moving direction of the plate portion are pressed against the downwind side wall portion by its own elastic deformation force. For this reason, since the plate-like portion is supported at three points in the movement direction middle portion and both end portions in the movement direction, it is possible to suppress the vibration of the plate-like portion in the movement direction at both ends.

Patent No. 4596046 gazette

However, in the patent document 1 mentioned above, although an effect can be anticipated about suppression of a vibration, there exists a problem which an air leak tends to generate | occur | produce about prevention of an air leak. That is, the plate-like portion is supported by the leeward-side guide groove and prevented from moving toward the leeward side, since the plate-like portion receives a pressing force pushed to the leeward side by the air flow flowing inside the case. Here, since the plate-like portion is a member that elastically deforms, it elastically deforms even when supported by the leeward side guide groove against the pressing force of the air flow, and a gap is generated between it and the leeward side guide groove. Cheap.

So, in this invention, it makes it a subject to provide the technique which prevents the air leak which arises from the inadequate strength of a slide door in a vehicle air conditioner.

In order to solve such problems, a vehicle air conditioner (1) according to the present invention includes a case (11) having an internal space through which the blown air flows, and a plate-like slide door slidably disposed in the internal space ( 20) and a rack (24) having a plurality of teeth projecting in the upstream direction from the slide door and arranged in the slide direction, and a shaft rotatably supported by the case on the upstream side of the slide door A rotation drive unit (23) having a portion (25) and a pinion (26) that meshes with the rack and rotates integrally with the shaft portion; and a surface extending in the sliding direction on the downstream side of the slide door Formed in the case in the shape of a case and slidably supporting the slide door, and a leak of air between the slide door and the downstream guide rail And having an air leak prevention unit for preventing.

In this case, the air leak prevention unit prevents air leak, and the air conditioning in the vehicle becomes comfortable.

Here, the air leakage preventing portion of the air conditioner (1) for a vehicle according to the present invention extends along the sliding direction of the slide door and a bent end (27) which is bent toward the downstream guide rail The present invention may be characterized in that it is a contact portion with the upstream surface of the downstream guide rail.

In this case, since the bent end contacts with the sliding direction surface of the downstream guide rail, the contact is effectively maintained throughout the sliding direction, and air leakage is prevented.

Furthermore, in the assembly of the slide door, even if there is backlash or dimensional deviation in the direction orthogonal to the slide direction, there is also an advantage that it is unlikely to be adversely affected.

Alternatively, the air leak prevention unit of the vehicle air conditioner (1) according to the present invention is an overlapping portion (D) of the rack (24) and the downstream guide rail (21) in the flow direction of the blown air. It may be characterized by a certain thing.

In this way, local elastic deformation of the slide door in the vicinity of the downstream guide rail is suppressed, whereby the end surface of the downstream surface of the slide door and the surface of the upstream surface of the downstream guide rail Since the contact can be maintained, air leakage can be prevented.

The air leak prevention portion of the air conditioner (1) for a vehicle according to the present invention, as described above, extends along the sliding direction of the slide door and is a bent end bent toward the downstream guide rail A contact portion between the side (27) and the upstream surface of the downstream guide rail, and an overlapping portion (D) between the rack (24) and the downstream guide rail (21) in the flow direction of the blown air ) May be provided.

In this way, the above-described air leakage prevention effect can be obtained repeatedly.

Further, the vehicle air conditioner (1) according to the present invention has an air leak preventing portion, and at least a part of the teeth of the rack (24) is in a direction orthogonal to the sliding direction of the slide door. The slide door may be provided in a section substantially the same as the entire length of the slide door.

In this way, the bending strength of the slide door is further enhanced, local elastic deformation is suppressed, and the above-described air leakage prevention effect is enhanced.

Furthermore, the material of the downstream guide rail (21) of the vehicle air conditioner (1) according to the present invention may be characterized in that the wear resistance is higher than that of the material of the slide door (20).

In this way, even if wear occurs, the slide door is on the side, and the occurrence of air leakage due to the progress of wear decreases, and even if wear progresses, it is only necessary to replace the relatively easy-to-replace slide door. Air conditioning performance can be maintained over a long period of time.

ADVANTAGE OF THE INVENTION According to this invention, the vehicle air conditioner (1) can provide the technique which prevents the air leak which arises from the inadequate strength of a slide door (20).

BRIEF DESCRIPTION OF THE DRAWINGS It is whole sectional drawing of 1st Embodiment of the vehicle air conditioner (1) of this invention. It is sectional drawing of a slide door periphery of the 1st Embodiment of this invention. It is a perspective view which shows the air leak prevention part of the 1st Embodiment of this invention. It is sectional drawing which shows the air leak prevention part of the 1st Embodiment of this invention. It is sectional drawing which shows the air leak prevention part of the 2nd Embodiment of this invention. It is sectional drawing which shows the air leak prevention part of the 3rd Embodiment of this invention. It is a perspective view which shows the slide door periphery of the 4th Embodiment of this invention. It is the schematic which shows the structure of the rack which concerns on each embodiment of this invention. It is sectional drawing of the slide door holding part of the conventional vehicle air conditioner. It is sectional drawing of the slide door holding part of the conventional vehicle air conditioner.

Hereinafter, a first embodiment of a vehicle air conditioner 1 according to the present invention will be described with reference to the drawings. In the following, the range necessary for the description of achieving the object of the present invention is schematically shown, the range necessary for the description of the corresponding part of the present invention is mainly described, and the description is omitted. It shall be based on a well-known technique.

FIG. 1 is a cross-sectional view of the whole of a first embodiment of a vehicle air conditioner 1 according to the present invention. The vehicle air conditioner 1 is roughly divided into a blowing unit that sends an air flow (not shown) and a temperature adjustment unit 10 that cools and heats the air flow blown from the blowing unit. The temperature adjustment unit 10 is a mode door such as a cooling heat exchanger 12, a heating heat exchanger 13, a slide door 20 for air temperature adjustment, a defrost door 14, a vent door 15, a foot door 16, etc. built in the case 11. Configured The air flow blown from the blowing unit passes through the air introducing unit 17 positioned on the upstream side of the cooling heat exchanger 12 and is supplied to the internal space of the case 11.

FIG. 2 is a cross-sectional view of the vicinity of the slide door of the first embodiment of the vehicle air conditioner 1 according to the present invention.

The slide door 20 is a plate-shaped door slidably disposed in the internal space of the case 11. More specifically, it is slidably disposed between the downstream guide rail 21 and the upstream guide rail 22 which are convexly curved in the downstream direction of the air flow.

The rotary drive unit 23 is a drive source for sliding the slide door, and engages with the rack 24 having a plurality of teeth projecting in the upstream direction from the slide door 20 and arranged in the slide direction. The shaft portion 25 rotatably supported by the case 11 on the upstream side and a pinion 26 that rotates integrally with the shaft portion 25 are provided, and a tooth portion formed on the pinion 26 meshes with the rack 24.

The shaft portion 25 and the pinion 26 may be configured as separate members or may be configured integrally.

The downstream guide rail 21 is formed in the surface of the case 11 so as to extend in the sliding direction on the downstream side of the slide door 20 and slidably supports the slide door 20.

The upstream guide rail 22 is formed in the surface of the case 11 so as to extend in the sliding direction on the upstream side of the slide door 20, and slidably supports the slide door 20 together with the downstream guide rail 21.

FIG. 3 is a perspective view showing the air leak prevention unit of the first embodiment of the vehicle air conditioner according to the present invention, and FIG. 4 is the air leak prevention of the first embodiment of the vehicle air conditioner according to the present invention. It is sectional drawing which shows a part. Here, the air leakage prevention portion prevents air flow leakage at the slide door 20, more specifically, air leakage between the slide door 20 and the downstream guide rail 21. In this embodiment, the end extending in the sliding direction of the slide door 20 is a bent end 27 bent toward the downstream guide rail 21, and the bent end 27 and the downstream guide rail 21 The upstream side surface is in contact with the contact portion C.

The operation of the first embodiment of the vehicle air conditioner 1 according to the present invention having such a configuration will be described.

9 and 10 are cross-sectional views of a slide door holding portion of a conventional air conditioner for a vehicle, and an end side extending along the sliding direction of the slide door 20 is not bent but is linear (planar) It has become. With such a structure, when a load is applied by receiving pressure from the air flow received by the slide door 20, the end of the slide door 20 is curved as shown in the drawing, and the end of the downstream guide rail 21 is Point contact with the ridgeline of the And in such a state, it becomes difficult to maintain point contact at all times along with the sliding of the slide door, so an air leak L will occur.

On the other hand, as shown in FIG. 4, when the edge of the slide door 20 is bent, the local bending strength of the slide door 20 when the load is applied to the slide door 20 by the air flow is significantly increased. . Furthermore, the position of the contact portion C between the end side (bent end side 27) of the slide door 20 and the downstream guide rail 21 is not the ridge line of the end of the downstream guide rail 21 but the upstream side of the downstream guide rail 21 The contact between the bent end 27 at the contact portion C and the downstream guide rail 21 is substantially line contact, so that the contact is maintained over the entire sliding direction and air leakage is prevented. .

Furthermore, in the assembly of the slide door 20, even if there is backlash in the direction orthogonal to the slide direction, or an unintended distortion or dimensional deviation in manufacturing, there is also an advantage that it is unlikely to be adversely affected.

Next, a second embodiment of the vehicle air conditioner 1 according to the present invention will be described. FIG. 5 is a cross-sectional view showing an air leakage prevention unit of a second embodiment of the vehicle air conditioner according to the present invention.

The air leak prevention unit in this embodiment is the same as the first embodiment in the components such as the slide door 20, the rotational drive unit 23, the downstream guide rail 21 and the like, and only the structure of the rack 24 is different.

That is, as the air leakage preventing portion, the rack 24 and the downstream guide rail 21 overlap in the flow direction of the blowing air (the overlapped portion D of the rack 24 and the downstream guide rail 21).

In other words, the teeth of the rack 24 extend toward the downstream guide rail 21 so as to be located in the area overlapping with the downstream guide rail 21 (in FIG. 5, the area overlapping above the downstream guide rail 21). It has become.

Thus, even if an area (overlap portion D) where the teeth of the rack 24 and the downstream guide rail 21 overlap is provided, the local elastic deformation of the slide door 20 is suppressed, whereby the downstream guide rail Since the surface 21 and the end (end surface) along the sliding direction of the slide door 20 can maintain surface contact better, air leakage can be prevented.

Next, a third embodiment of a vehicle air conditioner 1 according to the present invention will be described. FIG. 6 is a cross-sectional view showing an air leak prevention unit of a third embodiment of the vehicle air conditioner according to the present invention.

The air leakage preventing portion in this embodiment is, as described above, the bent end 27 extending along the sliding direction of the slide door 20 and bent toward the downstream guide rail 21, and the upstream of the downstream guide rail 21. Both the contact portion with the side surface and the overlapping portion D of the rack 24 and the downstream guide rail 21 in the flow direction of the blast air are provided.

In this way, both of the effect of air leakage prevention by the bent end 27 and the effect of air leakage prevention by the overlapping portion D of the rack 24 and the downstream guide rail 21 can be obtained.

Next, a fourth embodiment of a vehicle air conditioner 1 according to the present invention will be described. FIG. 7 is a perspective view showing the vicinity of the slide door 20 of the fourth embodiment of the vehicle air conditioner according to the present invention.

In this embodiment, after having the air leakage preventing portion described above, the teeth of the rack 24 are provided in a section substantially the same as the entire length of the slide door 20 in the direction orthogonal to the sliding direction of the slide door 20. It is done.

By so doing, the bending strength of the slide door 20 is further increased, and the above-described air leakage prevention effect is enhanced.

Here, even if all the teeth of the rack 24 do not extend in a section substantially the same as the entire length of the slide door 20, only some of the teeth may extend. You can get it.

Further, the section substantially the same as the entire length of the slide door 20 may not be extended completely to the end as shown in FIG. 7 (a), or may be slightly in the middle as shown in FIG. 7 (b). It shows that there may be a void, and the effects described above can be substantially realized.

In the first to third embodiments, the slide door 20 has been described as a curved shape that is convex in the downstream direction of the air flow, but the slide door 20 is also shown in the figures in these embodiments. It may be in the form of a non-curved flat plate as shown in FIG. Even in that case, the function of the air leak prevention unit described above can be exhibited.

Next, a fifth embodiment of a vehicle air conditioner 1 according to the present invention will be described. In this embodiment, in addition to the air leakage preventing portion described above, the material of the downstream guide rail 21 is higher in wear resistance than the material of the slide door 20. For example, the downstream guide rail 21 is formed of polypropylene mixed with a talc material, and the slide door 20 is formed of polypropylene not mixed with the talc material.

In this way, even if wear occurs, the slide door 20 is on the side, the flatness of the upstream surface of the downstream guide rail 21 is maintained, and the occurrence of air leakage due to the progress of wear is reduced. Even if one wear progresses, the air conditioning performance can be maintained for a long time only by replacing the slide door 20 which is relatively easy to replace.

In the above embodiments of the present invention, means for achieving smooth sliding of the slide door 20 can be considered. FIG. 8 is a schematic view showing the structure of the rack according to the present invention, and as shown in FIGS. 8 (a) and 8 (b), it has a bent end 27 as an air leak prevention portion.

Furthermore, as shown in the same figure, in the direction orthogonal to the sliding direction of the slide door 20, the tooth height of the teeth portion 28 of the rack 24 is higher than the position where it meshes with the pinion 26 (end side) The height is increased by 3 (every 3 in the figure).

And in the tooth part 29 with high tooth height, contact with the surface by the side of the lower stream of upstream guide rail 22 is possible.

By doing this, as in the prior art, the intermediate portion in the moving direction of the plate-like portion (slide door 20) abuts against the upwind side wall portion (surface on the downstream side of the upstream guide rail 22), and the plate-like portion When both end portions in the moving direction are held so as to abut against the leeward side wall portion (surface on the upstream side of the downstream side guide rail 21) and slide, only the tooth portion 29 with high tooth height is the upstream side guide rail 22. The sliding resistance can be reduced and the smooth sliding operation can be realized.

Although the slide door 20 has been described as the air temperature adjustment door of the vehicle air conditioner in the above description, it is applied to various other doors (intake door, blowout mode door, etc.) of the vehicle air conditioner. You may

The vehicle air conditioner according to the present invention can be manufactured industrially and can be a target of commerce, so it is an invention that can be industrially used with economic value.

1 Vehicle air conditioner 10 Temperature conditioner 11 Case 12 Heat exchanger 13 for cooling Heat exchanger 14 for heating Defrost door 15 Vent door 16 Foot door 17 Air inlet 20 Slide door 21 Downstream guide rail 22 Upstream guide rail 23 Rotational drive Part 24 Rack 25 Shaft part 26 Pinion 27 Flexing edge 28 Tooth part 29 Tooth part C with high tooth height Contact part D Overlap part L Air leakage

Claims

A case (11) having an internal space through which blowing air flows;
A plate-like slide door (20) slidably disposed in the internal space;
A rack (24) having a plurality of teeth projecting in the upstream direction from the slide door and arranged in the slide direction;
A rotary drive (23) having a shaft (25) rotatably supported by the case on the upstream side of the slide door, and a pinion (26) that rotates integrally with the shaft and engages with the rack When,
A downstream guide rail (21) which is formed on the case in a planar shape so as to extend in the sliding direction on the downstream side of the sliding door, and slidably supports the sliding door;
An air conditioner (1) for a vehicle, comprising: an air leak prevention unit that prevents air leak between the slide door and the downstream guide rail.
The air leak prevention unit is
And a contact portion between a bent end (27) that extends along the sliding direction of the slide door and is bent toward the downstream guide rail, and the upstream surface of the downstream guide rail (21). Vehicle air conditioner (1) according to claim 1.
The air leak prevention unit is
The vehicle air conditioner (1) according to claim 1, which is an overlapping portion (D) of the rack (24) and the downstream guide rail (21) in the flow direction of the blown air.
The air leak prevention unit is
A contact portion between a bent end (27) which extends along the sliding direction of the slide door and is bent toward the downstream guide rail, and the upstream surface of the downstream guide rail (21), and The vehicle air conditioner (1) according to claim 1, further comprising an overlapping portion (D) of the rack (24) and the downstream guide rail (21) in the flow direction of the blast air.
The teeth portion of at least a part of the rack (24) is provided in a section substantially the same as the entire length of the slide door in a direction orthogonal to the sliding direction of the slide door. The vehicle air conditioner (1) according to any one of the above.
The air conditioning system according to any one of claims 1 to 5, wherein the material of the downstream guide rail (21) is higher in wear resistance than the material of the slide door (20). Device (1).