JP2012001178A - Device for switching of inside/outside air - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure sealability around an introduction port in an inside/outside air switching device.SOLUTION: A region R1 of at least part of a seal surface R encompassing an introduction port 1b and directly in contact with a dash panel is a high strength region R1.

Description

  The present invention relates to an inside / outside air switching device.

The inside / outside air switching device is mounted on a vehicle and is used to selectively take in the inside air inside the vehicle or outside air outside the vehicle into the air conditioner for the vehicle, and the air to be taken in from outside air or outside air to inside air. It can be switched to.
Such an inside / outside air switching device includes a case having an inside air introduction port and an outside air introduction port, and a damper that selectively closes the inside air introduction port and the outside air introduction port, and the inside air introduction port is closed by the damper. In this case, outside air is taken into the case, and inside air is taken into the case when the outside air inlet is closed by the damper. And the conditioned air is produced | generated when the air taken in in the case is temperature-controlled by the vehicle air conditioner.

  By the way, the inside / outside air switching device is mounted in a vehicle interior and is fixed to a dash panel (partition wall) that partitions the vehicle interior and the engine compartment. As shown in Patent Document 1, generally, a flange is formed around the outside air introduction port, and the outside air introduction port is connected to the engine room by contacting the flange with the dash panel.

JP 2002-137621 A

  However, since the flange has a thin plate-like shape, the strength is low compared to other parts of the case. For this reason, an unexpected force is applied when the inside / outside air switching device is assembled, and the flange may be deformed. In particular, the flange around the outside air inlet is often used as a fulcrum when the case is attached to the dash panel, and there is a high possibility that the case will be deformed during attachment. If the flange around the outside air introduction port is deformed in this way, the sealing performance between the case and the dash panel is deteriorated, and there is a possibility that the outside air may flow into the vehicle interior unintentionally.

  Note that the flange as described above is not provided only around the outside air introduction port, but is also formed around the inside air introduction port when the inside air introduction port and the like are arranged so as to be connected to other members. The Further, the flange formed around the inside air introduction port is likely to be deformed similarly to the flange formed around the outside air introduction port.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to ensure sealing performance around an inlet port in an inside / outside air switching device.

The present invention adopts the following configuration as means for solving the above-described problems.
A first invention is provided in a vehicle air conditioner mounted on a vehicle provided with a partition wall having a communicating opening therethrough, and is connected to the communicating opening and introduces air outside or inside the vehicle. An inside / outside air switching device comprising a case having an inlet for the at least part of the case to be a high-strength region having a higher strength than other regions and surrounding the inlet. A configuration is employed in which a seal surface is provided that directly contacts the partition wall or a member attached to the partition wall.
According to a second invention, in the first invention, the high-strength region is a region used as a fulcrum when the case is attached to the partition wall.
According to a third aspect of the present invention, in the first or second aspect of the present invention, a part of the wall portion provided around the introduction port is formed thicker than the other wall portions, and the wall portion is formed with the thickness. A configuration is adopted in which the end face is made the high-strength region.
According to a fourth aspect of the present invention, in the third aspect of the present invention, the thick wall portion having the high strength region is thinned.
According to a fifth invention, in the fourth invention, the thick wall portion having the high-strength region is cut out from both sides from the end surface side to be the high-strength region and from the opposite side of the end surface. Adopt the configuration that.

According to the present invention, at least a part of the seal surface surrounding the introduction port is a high-strength region. For this reason, when the sealing surface abuts against the partition wall, a force to push back the sealing surface can be received in the high strength region.
Therefore, according to the present invention, it is possible to prevent deformation around the introduction port and ensure sealing performance.

It is a perspective view showing a schematic structure of an inside / outside air switching device in one embodiment of the present invention. It is sectional drawing which shows typically the case with which the inside / outside air switching device in one Embodiment of this invention is provided. It is a schematic diagram explaining the manufacturing method of the case with which the inside / outside air switching apparatus in one Embodiment of this invention is provided.

  Hereinafter, an embodiment of an inside / outside air switching device according to the present invention will be described with reference to the drawings. In the following description, a rotary damper type inside / outside air switching device will be described as an example of the inside / outside air switching device according to the present invention. However, the inside / outside air switching device of the present invention can also be applied to inside / outside air switching devices other than the rotary damper system. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

FIG. 1 is a perspective view showing a schematic configuration of the inside / outside air switching device S1 of the present embodiment. Moreover, FIG. 2 is sectional drawing which shows typically schematic structure of the inside / outside air switching apparatus S1 of this embodiment.
The inside / outside air switching device S1 of the present embodiment is provided in a vehicle air conditioner mounted on a vehicle in which a dash panel 200 (partition wall) having a communication opening 100 penetrating as shown in FIG. 2 is installed. The air to be taken in is switched from inside air to outside air or from outside air to inside air.
As shown in FIG. 1, the inside / outside air switching device S <b> 1 of the present embodiment includes a case 1, a rotary damper 2, and a rotation lever 3.

  The case 1 forms the outer shape of the inside / outside air switching device S1 of the present embodiment, and accommodates the rotary damper 2 in a rotatable manner. The case 1 includes an inside air introduction port 1a for taking in the inside air that is air inside the vehicle interior, an outside air introduction port 1b for taking outside air that is outside the vehicle, and air that discharges the air taken inside. And an outlet 1c.

The inside air introduction port 1a is an introduction port that opens upward in the upper portion of the case 1 and is located in the vehicle interior. The outside air inlet 1b is an inlet that opens upward in the upper part of the case 1 in the same manner as the inside air inlet 1a and is connected to an engine room that communicates with the outside of the vehicle. As shown in FIG. 1, the inside air introduction port 1 a and the outside air introduction port 1 b are provided on the top of the case 1 with the top portion 1 d interposed therebetween. The air outlet 1c is provided in the lower part of the case 1, and is connected to a blower unit that houses a blower that is driven when the vehicle air conditioner is operated.
Further, the case 1 has a shut rib for separating the inside air introduction port 1a or the outside air introduction port 1b from the air outlet 1c by abutting with a seal member installed on the rotary damper 2.

The case 1 also includes a seal surface R that surrounds the outside air inlet 1b. The seal surface R is a surface that directly contacts the dash panel 200 (partition wall) that partitions the vehicle compartment and the engine room. The seal surface R surrounds the communication opening 100 provided in the dash panel 200 and is fixed. As a result, the outside air inlet 1b is connected to the communication opening 100 and is connected to the inside of the engine room. In the inside / outside air switching device S1 of the present embodiment, the sealing surface R is rectangular as shown in FIG. 1, and a partial region R1 shown in FIG. And the other region is formed from the upper surface of the flange 1 f of the case 1.
The partial region R1 is a region that becomes a fulcrum when the case 1 is attached to the dash panel 200, and is composed of the upper surface of the wall 1e. Thus, by setting the upper surface of the wall portion 1e as the partial region R1 of the seal surface R, the partial region R1 does not protrude outward from the outer wall surface 1g of the case 1 and is directly connected to the outer wall surface 1g. Become. For this reason, the force received in the partial region R1 can be received by the entire wall portion 1e, and the strength of the partial region R1 is increased. That is, the partial region R1 is a region having higher strength than the region formed by the upper surface of the flange 1f. In the following description, the partial region R1 is referred to as a high strength region R1.

Further, as shown in FIG. 1, the wall portion 1e having the high-strength region R1 is hollowed out by forming a plurality of depressions 10 whose upper ends (that is, the high-strength region R1) are open ends. These recesses 10 are arranged in the extending direction of the high-strength region R1.
As shown in FIG. 2, the wall portion 1 e is formed with a plurality of recesses 11 having open ends on the side opposite to the high strength region R <b> 1 (downward). That is, in the inside / outside air switching device S1 of the present embodiment, the wall 1e having the high strength region R1 is cut out from both the high strength region R1 side and the opposite side to the high strength region R1.
In the inside / outside air switching device S1 of the present embodiment, the recess 10 formed from the high-strength region R1 side and the recess 11 formed from the opposite side of the high-strength region R1 are set to the same depth. That is, in the wall 1e, the depths of the lightening regions on both sides are set equal.

  The rotary damper 2 selectively closes (that is, selectively opens) the inside air introduction port 1a and the outside air introduction port 1b, and has a fan-like shape in which the upper surface is closed and the inside is hollow. . Further, the rotary damper 2 is opened with the side portion leaving the peripheral edge portion, and is configured so that air can pass through the inside from the side portion.

  As shown in FIG. 1, the rotary damper 2 is connected to a rotation lever 3 and a rotation shaft 4, and rotates about the rotation shaft 4 in accordance with the rotation of the rotation lever 3. More specifically, the rotary damper 2 has a posture in which the upper surface closes the inside air introduction port 1a (hereinafter referred to as an inside air introduction port closing posture) and a posture in which the upper surface closes the outside air introduction port 1b (the posture shown in FIG. , Referred to as an outside air inlet closing position), and is rotatable inside the case 1.

  Moreover, each peripheral part left on the side part of the rotary damper 2 protrudes upward from the upper surface. And the sealing member not shown is stuck on the upper surface side of the area | region which the peripheral part protruded, and the back side. This seal member is in contact with the top 1 d or the shut rib of the case 1 to seal between the case 1 and the rotary damper 2.

  The rotation lever 3 is for rotating the rotary damper 2 between the inside air inlet closing posture and the outside air inlet closing posture. The rotating lever 3 is installed outside the case 1 as shown in FIG. 1, and is connected to the rotating shaft 4 connected to the rotary damper 2 as described above. The rotation lever 3 is connected to an operation lever or a drive motor provided in the vehicle interior, and rotates when power is transmitted from the operation lever or the drive motor.

  In the inside / outside air switching device S1 of the present embodiment configured as described above, when the vehicle air conditioner is operated and the blower is driven, the turning lever 3 is turned and the rotary damper 2 is introduced into the outside air. By adopting the mouth closed posture, the inside air is taken into the case 1 through the inside air introduction port 1a. The inside air taken into the case 1 is discharged to the outside of the inside / outside air switching device S1 of the present embodiment through the air outlet 1c.

  Further, when the air conditioner for a vehicle is operated and the blower is driven, the rotary lever 3 is rotated and the rotary damper 2 is brought into the inside air inlet closing position, so that the outside air inlet 1b is interposed. The outside air is taken into the case 1. The outside air taken into the case 1 is discharged outside the inside / outside air switching device S1 of the present embodiment through the air outlet 1c.

Here, in the inside / outside air switching device S1 of the present embodiment, a partial region R1 of the seal surface R that surrounds the outside air introduction port 1b and directly contacts the dash panel 200 is formed by the wall surface of the wall portion 1e of the case 1, The intensity region R1. And when the high intensity | strength area | region R1 contact | abuts to the dash panel 200, the dash panel 200 can receive the force which pushes back the high intensity | strength area | region R1 in the whole wall part 1e. For this reason, the strength of the high-strength region R1 is higher than when the upper surface of the flange is a sealing surface. That is, in the inside / outside air switching device S1 of the present embodiment, when the seal surface R comes into contact with the dash panel 200, a force that pushes back the seal surface R can be received in the high-strength region R1.
Therefore, according to the inside / outside air switching device S1 of the present embodiment, it is possible to prevent deformation around the outside air introduction port 1b and to ensure sealing performance.

  Further, in the inside / outside air switching device S1 of the present embodiment, a region that becomes a fulcrum when the case 1 is attached to the dash panel 200 in the seal surface R is a high-strength region R1. That is, the region where the load is most applied during assembly is the high-strength region R1. For this reason, it becomes possible to prevent more reliably the deformation | transformation around the external air inlet 1b at the time of an assembly.

  Moreover, in the inside / outside air switching device S1 of the present embodiment, the wall portion 1e having the high strength region R1 is thinned. For this reason, at the time of manufacturing the case 1, it is possible to suppress the occurrence of sink marks in the wall portion 1e, and to prevent deformation around the outside air inlet 1b.

As shown in FIG. 3, when the case 1 is manufactured, a slide mold K1 that is pulled upward and forms the outside air inlet 1b, and a slide mold that is pulled downward and forms the air outlet 1c. K2 is used. And the hollow 10 formed in the wall part 1e is formed of the protrusion part K1a which protrudes below provided in the slide metal mold | die K1. Further, the recess 11 formed in the wall 1e is formed by a protruding portion K2a that protrudes upward provided in the slide mold K2.
Here, in the inside / outside air switching device S1 of the present embodiment, since the wall portion 1e is cut from both sides from the high strength region R1 side and from the opposite side to the high strength region R1, An intermediate wall 12 is provided in the middle of the thinned portion, whereas the thinned portion is cut only from one side. For this reason, the strength of the lightening portion can be further increased.
In addition, if the depths of the hollowed regions (indentation 10 and indentation 11) on both sides are set to be equal, the unevenness of the depths of indentation 10 and indentation 11 is eliminated, which is optimal from the viewpoint of increasing the strength. Furthermore, the height of the protrusion K1a of the slide mold K1 and the height of the protrusion K2a of the slide mold K2 can be made equal, and any one of the protrusions K1a and K2a is prevented from becoming unevenly high. ing.
When either one of the protrusions K1a, K2a is unevenly high, the tall protrusions K1a, K2a are elongated and weakened. For this reason, in the inside / outside air switching device S1 of the present embodiment, it is possible to prevent the strength of the slide molds K1, K2 from being lowered, and to extend the life of the slide molds K1, K2.

  Furthermore, in the inside / outside air switching device S1 of the present embodiment, the high-strength region R1 and the outer wall surface 1g of the wall portion 1e are connected to each other, so that the outer wall surface 1g of the wall portion 1e is pulled upward by a slide mold K1. Can be formed. Therefore, it is not necessary to separately use the outer wall surface 1g of the wall portion 1e, and the number of slide molds required when manufacturing the case 1 can be suppressed.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

For example, in the above-described embodiment, the configuration in which the seal surface R formed around the outside air inlet 1b is directly in contact with the dash panel 200 that partitions the vehicle compartment and the engine room has been described. However, the present invention is not limited to this, and the seal surface R can be directly brought into contact with a member such as an intake duct attached to the dash panel 200. Further, the seal surface R may be brought into contact with a partition wall other than the dash panel 200 that partitions the vehicle compartment and the engine room.
Further, in the above embodiment, the vehicle air conditioner is mounted in the vehicle interior, but the present invention is not limited to this, and the vehicle air conditioner is mounted in another space such as an engine room. May be.

Moreover, in the said embodiment, the sealing surface R was formed around the external air inlet 1b, and the structure which consists of the end surface (upper surface) of the wall part 1e formed in thickness was demonstrated. However, the present invention is not limited to this, and when a seal surface is formed around the inside air introduction port, a part of the seal surface may be formed of the wall surface of the case. good.
In addition, the high-strength region R1 may be created by thickening the flange or changing the forming material, instead of setting the high-strength region R1 by using the end face of the wall portion 1e formed thick.

  Moreover, in the said embodiment, the structure where a part of seal surface R around the external air inlet 1b was the high intensity | strength area | region R1 was demonstrated. However, the present invention is not limited to this, and it is also possible to employ a configuration in which the entire sealing surface R is configured to be the wall surface of the case wall and the entire sealing surface R is the high-strength region R1. .

  S1 …… Inside / outside air switching device, 1 …… case, 1a …… inside air introduction port (introduction port), 1b …… outside air introduction port (introduction port), 1e …… wall portion, 1f …… flange, 1g …… outside Wall surface, 2 ... Rotary damper, 10, 11 ... Dimple, 100 ... Communication opening, 200 ... Dash panel (partition wall), R ... Seal surface, R1 ... High-strength region (end face, part of seal surface) Area)

Claims (5)

Provided in a vehicle air conditioner mounted on a vehicle provided with a partition wall having a communicating opening that penetrates, and has an inlet port that is connected to the communicating opening and introduces air outside or inside the vehicle. An inside / outside air switching device including a case,
The case has a sealing surface that is in direct contact with the partition wall or a member attached to the partition wall so that at least a part of the case is a high-strength region having a higher strength than other regions and surrounds the introduction port. An inside / outside air switching device characterized by comprising:   The inside / outside air switching device according to claim 1, wherein the high-strength region is a region used as a fulcrum when the case is attached to the partition wall.   A part of the wall portion provided around the introduction port is formed to be thicker than the other wall portions, and an end surface of the wall portion formed to be thick is the high-strength region. The inside / outside air switching device according to claim 1 or 2.   The inside / outside air switching device according to claim 3, wherein the thick wall portion having the high strength region is cut out.   5. The inner and outer walls according to claim 4, wherein the thick wall portion having the high-strength region is cut out from both sides from the end surface side that is the high-strength region and from the opposite side of the end surface. Qi switching device.

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