JP4186155B2 - Opening and closing doors for automotive air conditioners - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an open / close door for mode switching, for example, for opening / closing an air outlet of an automobile air conditioner.
[0002]
[Prior art]
In the automotive air conditioner, in order to control the blowing mode, an opening / closing door is provided for each blowing mode, and the opening / closing door is controlled to open / close for each selected blowing mode. This opening / closing door has an effect of improving the sealing performance and reducing the hitting sound when the air-conditioning case constituting the air outlet is adhered by attaching a porous elastic material such as a sponge around the opening / closing door. I was getting. However, it wasn't enough and I could hear the hitting sound.
[0003]
For the purpose of reducing the hitting sound, a cylindrical projection 22 is formed on the outer edge of the door body 21, and the door body 21 is wrapped with the seal member 24 together with the projection 22. In some cases, the covered protrusion 22 collides with the air conditioning casing, and the effect of reducing the hitting sound is obtained (Patent Document 1).
[0004]
In addition, a damper that switches the air passage of the air conditioner is provided with a soft seal lip 11 along the outer periphery of the hard substrate 10, and a reinforcing rib 15 is provided on the seal lip 11, and the substrate 10 side is provided. The structure which raises the rigidity of is shown (patent document 2).
[0005]
[Patent Document 1]
JP 2000-62436 A
[Patent Document 2]
JP-A-6-270652
[0006]
[Problems to be solved by the invention]
In Patent Document 2, it is described that the seal lip 11 has the reinforcing ribs 15 so that the deformation is prevented, and the seal lip 11 is reliably adhered to the wall surface portion, thereby improving the sealing performance. The effect of the reduction of the sound generated when the door is closed is not described. It is only estimated that the hitting sound is low due to the thin seal lip.
[0007]
Accordingly, the present invention provides an open / close door for an automotive air conditioner having a structure in which an open / close door having an elastomer seal portion suppresses the generation of hitting sound when the elastomer seal portion contacts an air conditioning case as much as possible. To do.
[0008]
[Means for Solving the Problems]
For this reason, the open / close door of the automotive air conditioner according to the present invention is an open / close door that controls the flow of air, and an elastomer seal portion is disposed over one end surface or the periphery of the door body, and the air-conditioning case of the elastomer seal portion A plurality of independent recesses are formed on the abutting surface, and the air-conditioning case and the recesses become a sealed space when closed, and air acts as a damper (Claim 1). Therefore, even when the elastomer seal portion hits the wall surface of the air conditioning case, the tip end portion is soft because the elastomer seal portion has a plurality of independent recesses, and generation of hitting sound can be suppressed. Further, when the recess is closed, it becomes a sealed space with the air conditioning case, and air acts as a damper, reducing the closing speed of the open / close door, and reducing the hitting sound.
[0009]
In addition, by changing the pitch between a plurality of independent recesses formed in the elastomer seal portion (Claim 2) or changing the dimensions of the plurality of independent recesses (Claim 3), various sound generation conditions can be corrected. It can be made to correspond.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
1 and 2 show an open / close door 1 according to the present invention, and a thin plate-like door body 3 is fixed to a rotary shaft 2. The rotating shaft 2 and the door body 3 are made of resin. An elastomer seal 5 is attached around the door body 3.
[0013]
The elastomer seal portion 5 is made of rubber and includes a base end portion 6 and a tip end portion 7. A groove 8 is formed in the base end portion 6, and the door body 3 is fitted into the groove 8. . The tip portion 7 has a concave portion 10 formed on its abutting surface 7a. The recesses 10 have uniform dimensions, and the pitches between the recesses 10 are uniform.
[0014]
By having this recessed part 10, the recessed part 10 becomes a sealed space at the time of contact with the air-conditioning case 11, and air has the effect of reducing the closing speed by reducing the closing speed by performing a damper action. Further, the recess 10 can steal the meat, which is advantageous for reducing the weight and setting the flexibility appropriately. The open / close door 1 having such a structure is disposed at the air outlet of the automobile air conditioner and is appropriately moved when the blowing mode is switched. Although not shown, even if the concave portion 10 is provided on the anti-contact surface side, the damper effect is eliminated, but it is useful because it has a flexible characteristic action.
[0015]
In FIG. 3, the second embodiment of the present invention is shown. The dimension L of the recess 10 formed in the elastomer seal portion 5 decreases as it goes in the counter-rotation axis direction, and the pitch P between the recesses 10 is also reduced. It is gradually formed narrower. With such a combination of the recesses 10, the degree of flexibility of the elastomer seal portion can be adapted to various forms.
[0016]
FIG. 4 shows a third embodiment of the present invention, showing an example in which the recess 10 formed in the elastomer seal portion 5 is circular and its diameter gradually decreases in the counter-rotating direction. . That is, in this example as well, the flexibility characteristic of the elastomer seal portion can correspond to various states as in the above-described embodiment.
[0017]
5 to 7 show another example of the present invention. On the contact surface 7a side of the elastomer seal portion 5, the contact surface 7c that actually contacts is a flat surface. A large number of irregularities 12 shown in FIGS. 6 and 7 are formed continuously from the door body to the elastomer seal portion up to the end portion 6. This also allows the flexibility to be changed arbitrarily.
[0018]
As mentioned above, in this invention, although embodiment of the opening / closing door 1 which has an elastomer seal | sticker part was demonstrated as a mode door for switching blowing modes, it is an inside / outside air switching door for introducing vehicle interior air or vehicle exterior air Of course, the same effect can be obtained. Moreover, although the example in which the elastomer seal portion is provided over the entire periphery of the door body (excluding the rotating shaft portion) is shown, it may be provided on one end surface.
[0019]
【The invention's effect】
As described above, according to the first aspect of the present invention, by forming a recess in the elastomer seal portion, it becomes easy to appropriately select a flexible characteristic, and the recess has a damper effect when closed. Thus, it is possible to delay the closing speed and suppress the generation of the hitting sound. Further, according to the invention of claim 2 or 3, various degrees of flexibility of the elastomer seal portion can be dealt with and it is possible to deal with correction of the sound generation condition.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the above.
FIG. 3 is a perspective view of a second embodiment of the same.
FIG. 4 is a perspective view of a third embodiment of the same.
FIG. 5 is a sectional view of a second invention.
FIG. 6 is a perspective view of the same.
7 is a cross-sectional view taken along the line AA of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Opening / closing door 2 Rotating shaft 3 Door main body 5 Elastomer seal part 6 Base end part 7 Tip part 7a Contact surface 8 Groove 10 Concave part 11 Air-conditioning case 12 Irregularity

Claims (3)

In the door to control the flow of air, arranged elastomer seal portion over one end face or periphery of the door body, to form a plurality of independent concave contact surface with the air-conditioning case of the elastomer seal part, closed An opening / closing door for an air conditioner for automobiles , characterized in that the air conditioning case and the recess sometimes become a sealed space, and air acts as a damper . 2. The opening / closing door of an automotive air conditioner according to claim 1, wherein a pitch between a plurality of independent recesses formed in the elastomer seal portion is variable. Door of an automotive air conditioner according to claim 1 or 2, wherein it has to vary the plurality of independent dimensions of recess formation in the elastomer seal part.

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