JP2004210035A - Opening and closing door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress beating caused when a door is opened and closed in an opening and closing door having an elastomer sealing part. <P>SOLUTION: The elastomer sealing part is provided on one end side or the periphery of a door body and recesses are formed on the elastomer sealing part. The size of the recess and a pitch between the recesses are arbitrary. A sealed space is formed of the recess and an air-conditioning case when the door is closed and the damper operation of air is performed, so that a closing speed is reduced and the beating is suppressed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a mode switching opening / closing door that controls opening / closing of an air outlet of a vehicle air conditioner.
[0002]
[Prior art]
In an air conditioner for a vehicle, an opening / closing door is provided for each blowing mode in order to control the blowing mode, and the opening / closing door is controlled for each selected blowing mode. A porous elastic material such as a sponge called a lining is adhered to the opening / closing door to improve the sealing performance and reduce the impact noise when the air-conditioning case that constitutes the air outlet comes into contact. I was getting it. However, it was not enough, and I could hear the tapping sound.
[0003]
For the purpose of reducing the hammering sound, a columnar projection 22 is formed on the outer edge of the door main body 21, and the door main body 21 is wrapped with the projection 22 by the sealing member 24. 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]
Further, a soft seal lip 11 is provided along the outer periphery of the hard substrate 10 with a damper for switching a ventilation passage of the air conditioner, and a reinforcing rib 15 is provided on the seal lip 11 so that the substrate 10 side (Patent Document 2).
[0005]
[Patent Document 1] JP-A-2000-62436
[Patent Document 2] JP-A-6-270652
[0006]
[Problems to be solved by the invention]
Patent Document 2 describes that the sealing lip 11 has the reinforcing ribs 15 so that deformation is prevented, and the sealing lip 11 is reliably brought into close contact with the wall surface portion, thereby improving the sealing performance. The effect of reducing the tapping sound generated when the opening / closing door is closed is not described. It is merely presumed that the tapping sound is reduced simply because of the thin seal lip.
[0007]
In view of the above, the present invention provides an opening / closing door having an elastomer seal portion, which has a structure in which generation of a tapping sound when the elastomer seal portion contacts an air conditioning case is minimized.
[0008]
[Means for Solving the Problems]
For this reason, the opening and closing door according to the present invention is an opening and closing door for controlling the flow of air, in which an elastomer seal portion is provided over one end surface or around the door body, and a recess is formed in the elastomer seal portion. (Claim 1). Therefore, even when the elastomer seal portion hits the wall surface of the air conditioning case, the tip portion is softer since the base portion of the elastomer seal portion has a concave portion, so that it is possible to suppress occurrence of a tapping sound. In addition, when the recess is closed, it becomes a closed space with the air-conditioning case, and the air acts as a damper, so that the closing speed of the opening / closing door can be reduced, and the noise can be reduced.
[0009]
Further, by changing the pitch between the concave portions (claim 2) and changing the size of the concave portion (claim 3), it is possible to cope with various corrections to the hitting sound generation conditions. Further, the elastomer seal portion is made of a rubber material unlike the door body (claim 4).
[0010]
Still another aspect of the present invention is directed to an opening / closing door for controlling the flow of air, wherein an elastomer seal portion is disposed over one end surface or the periphery of the door body, and from the door body side except for an abutting surface of the elastomer seal portion. A large number of irregularities are continuously formed in the direction of the elastomer seal portion (claim 5). Thereby, the unevenness can be made to correspond to the hitting sound generation condition. That is, the design of the flexibility of the elastomer seal portion can be arbitrarily changed by appropriately selecting the number of the unevenness.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
1 and 2 show an opening and closing door 1 according to the present invention, and a thin plate-shaped door body 3 is fixed to a rotating shaft 2. The rotating shaft 2 and the door body 3 are made of resin. An elastomer seal portion 5 is attached around the door body 3.
[0013]
The elastomer seal portion 5 is made of rubber and includes a base portion 6 and a tip portion 7. A groove 8 is formed in the base portion 6, and the door body 3 is fitted into the groove 8. . The tip portion 7 has a recess 10 formed in the contact surface 7a. The recesses 10 have uniform dimensions and a uniform pitch between the recesses 10.
[0014]
By having the recess 10, the recess 10 becomes a closed space when it comes into contact with the air-conditioning case 11, and the air acts as a damper to reduce the closing speed and has an effect of reducing a tapping sound. In addition, the concave portion 10 can be stolen, which is advantageous for reducing the weight and appropriately setting the flexibility. The opening / closing door 1 having such a structure is arranged at an air outlet of an air conditioner for a vehicle, and is appropriately moved at the time of switching of a blowing mode. Although not shown, even if the concave portion 10 is provided on the side opposite to the abutting surface, the damper effect is eliminated, but it is useful because it has a flexible characteristic action.
[0015]
FIG. 3 shows a second embodiment of the present invention, in which the dimension L of the concave portion 10 formed in the elastomer seal portion 5 decreases in the direction of the anti-rotation axis, and the pitch P between the concave portions 10 also increases. It is gradually narrowed. With such a combination of the concave portions 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, in which an example is shown in which the concave portion 10 formed in the elastomer seal portion 5 is circular, and the diameter thereof gradually decreases in the anti-rotation direction. . That is, also in this example, as in the above-described embodiment, the flexibility characteristics of the elastomer seal portion can correspond to various states.
[0017]
FIGS. 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 concavities and convexities 12 shown in FIGS. 6 and 7 are continuously formed from the door main body toward the elastomer seal portion up to the end portion 6. This also allows the flexibility to be changed arbitrarily.
[0018]
As described above, in the present invention, the embodiment of the opening / closing door 1 having the elastomer seal portion has been described as the mode door for switching the blowing mode, but the inside / outside air switching door for introducing the vehicle interior air or the exterior air is described. Needless to say, the same operation and effect can be obtained. In addition, although the example in which the elastomer seal portion is provided over the entire periphery of the door body (excluding the rotation shaft portion) is shown, it may be provided on one end surface.
[0019]
【The invention's effect】
As described above, according to the first to fourth aspects of the present invention, by forming the concave portion in the elastomer seal portion, it is easy to appropriately select the flexibility characteristic, and the concave portion allows the air to have a damper effect when closed. As a result, the closing speed can be reduced, and the occurrence of a tapping sound can be suppressed. Furthermore, according to the invention of claim 5, since a large number of irregularities are provided in the elastomer seal portion, flexibility can be provided, and the flexibility characteristic is changed by increasing or decreasing the number of the irregularities. be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a sectional view of the same.
FIG. 3 is a perspective view of the second embodiment.
FIG. 4 is a perspective view of the third embodiment.
FIG. 5 is a cross-sectional view of the second invention.
FIG. 6 is a perspective view of the same.
FIG. 7 is a sectional view taken along line AA of FIG. 5;
[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 (5)

What is claimed is: 1. An opening / closing door for controlling the flow of air, wherein an elastomer seal portion is provided on one end surface or around the door body, and a concave portion is formed in the elastomer seal portion. 2. The opening / closing door according to claim 1, wherein a pitch between concave portions formed in the elastomer seal portion is variable. 2. The opening / closing door according to claim 1, wherein the size of the recess formed in the elastomer seal portion is changed. 2. The door according to claim 1, wherein the elastomer seal portion is made of a rubber material different from the door body. An opening / closing door for controlling the flow of air, in which an elastomer seal portion is disposed over one end surface or around the door body, and a number of irregularities are formed in the direction of the elastomer seal portion from the door body side except for a contact surface of the elastomer seal portion. An opening and closing door characterized by being formed continuously.

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