JPH0546509U - Ventilation system for vehicles - Google Patents

Abstract

(57) [Summary] (Modified) [Objective] To provide a vehicle ventilator in which the occurrence of collision noise that occurs when a flexible plate that is a valve block an opening for ventilation is eliminated as much as possible. [Structure] Ventilation surface 11a formed in a ventilation opening of a vehicle body
An upper edge is fixedly attached to the flexible plate member 2, which closes the opening when the vehicle interior pressure is steady and opens outward when the vehicle interior pressure rises to discharge the vehicle interior pressure through the ventilation surface 11a. The plate thickness of the flexible plate material is formed so as to gradually decrease toward at least one of the left and right end portions, and the flexible plate material 2 is obliquely provided from the upper end of the thick portion 2a to the lower end of the thin end portion 2b. By making linear contact with the ventilation surface 11a while sequentially moving, the surface contact at the time of contact is eliminated to prevent the generation of impact noise.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a vehicle equipped with a valve function for exhausting the air in the vehicle compartment to ventilate the vehicle and at the same time opening and closing it according to the pressure change in the vehicle compartment, such as when the door is opened and closed, to reduce the pressure rise in the vehicle compartment. Ventilation system.

[0002]

[Prior Art]

 As a conventional vehicle ventilation device of this type, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-21111, a lattice-shaped synthetic resin chamber body is provided from the outside in a ventilation hole formed in a vehicle body. It is fitted and fixed, and the upper end of the flexible plate made of a rubber plate or the like having a size large enough to close the lattice part is fixed to the outer upper edge of the chamber main body. When the pressure becomes larger than the external pressure, the flexible plate material bends outward to expel the air in the room to the outside, and closes the lattice part against the outside air to prevent the outside air from entering. It is configured.

By the way, the flexible plate members, including those disclosed in the above publications, are generally formed to have a uniform plate thickness, and when the flexible plate member is opened and closed, it is struck against the chamber body. Sound was generated, and there was a problem with habitability in the room.

Many proposals have been made to deal with such a problem. For example, there is a vehicle ventilation device disclosed in Japanese Utility Model Laid-Open No. 1-167968. According to this vehicle ventilation device, the portion where the flexible plate member contacts the peripheral portion of the chamber body is formed thinner than the other portions, and the flexible plate member blocks the opening of the chamber body. Then, the thin portion is bent to provide a cushioning function to reduce the contact noise.

[0005]

[Problems to be solved by the device]

 However, the chamber body has the peripheral frame portion and the lattice portion as described above, and in the case of the vehicle ventilation device disclosed in the above-mentioned Japanese Utility Model Laid-Open No. 1-16796, the cushioning of the thin peripheral portion of the flexible plate material is performed. The contact noise against the lattice portion of the chamber body is certainly reduced by the effect, but the peripheral thin wall portion of the flexible plate material collides with the peripheral frame portion of the chamber body due to the surface contact, so the collision at that time is reduced. The contact noise is still large, and the collision noise to the lattice part of the chamber body is also reduced to some extent, but it is still close to the surface, so it cannot be reduced as expected.

This surface contact structure is not limited to the vehicle ventilation device disclosed in the above publication, but is common to all conventional vehicle ventilation devices, and various improvements have been made. However, it is difficult to sufficiently eliminate the occurrence of impact sound with the above structure.

An object of the present invention is to provide a vehicular ventilation system that eliminates such a problem and eliminates the occurrence of the collision noise as much as possible.

[0008]

[Means for Solving the Problems]

 In order to achieve this object, the present invention has an upper end edge fixed to a ventilation opening of a vehicle body and closes the opening when the pressure inside the vehicle is steady, and opens it to the outside when the pressure in the vehicle rises to reduce the pressure inside the vehicle. A ventilator for a vehicle, comprising a flexible plate material discharged from an opening, wherein the plate thickness of the flexible plate material is gradually reduced toward at least one of the left and right end portions. It has a feature.

[0009]

[Action]

 A ventilation part is constructed by inserting a panel part having a ventilation surface into a ventilation hole formed in a part of the vehicle body and directly fixing the panel part to the vehicle body. A ventilation opening is formed by the ventilation hole and the ventilation surface. In this structure, for example, when the door or the like is opened or closed, the pressure inside the vehicle cabin temporarily rises, and the pressure acts on the flexible plate member that closes the ventilation surface from the inside of the vehicle, so that The flexible plate is bent outward, and the air corresponding to the pressure increase in the passenger compartment is discharged to the outside. In this way, when the pressure increase air in the vehicle compartment is discharged and the pressure in the vehicle compartment becomes in equilibrium with the outside air pressure, the flexible plate member returns to its original closed posture due to its own weight and elastic force, and the flexible surface is closed. Blocks and blocks communication between the inside and outside of the vehicle.

According to the ventilator of the present invention, the flexible plate member is formed such that the plate thickness is gradually reduced from one end of either the left side to the other end, or from the center of the left and right to the end of the left and right. Therefore, when the above-mentioned flexible plate material returns to the closed posture due to its own weight and elastic force, the upper edge of the flexible plate material fixed to the panel part is thinned from the thinned end. The parts come into contact with the ventilation surface with a time difference. That is, the flexible plate member linearly contacts the ventilation surface while moving diagonally from the upper end of the thick portion to the lower end of the thin end portion. Therefore, there is no contact at the time of contact, and no collision noise due to contact is generated as in the past.

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to illustrated embodiments. The vehicle ventilator of the present invention is installed in the vicinity of the vehicle door or on the vehicle body on the rear side of the rear bumper as in the conventional case, and there is no particular feature in the installation part or installation structure. Therefore, in the following description, the chamber, which is a main constituent member of the vehicle ventilation device, will be mainly described.

FIG. 1 and FIG. 2 show a typical embodiment of the present invention. FIG. 1 is a view of a chamber, which is fitted and fixed to a ventilation hole (not shown) formed in a vehicle from the outside, as viewed from the inside of the vehicle. FIG. 2 is a perspective view, and FIG. 2 is a behavior explanatory view inside the chamber body when the flexible plate material is closed. Also in the present invention, the chamber is composed of the chamber body 1 and the flexible plate member 2.

The chamber body 1 is fitted into a ventilation hole (not shown) formed in the vehicle body, and has a panel portion 11 having a downwardly inclined flat plate-like ventilation surface 11 a that gradually projects downward to the outside air side, and the panel portion. The vehicle body fixing portion 12 is formed so as to protrude along the outer air side peripheral edge of the vehicle body 11. In the present embodiment, the ventilation surface 11a is formed in two steps, upper and lower, and vertical and horizontal lattice-shaped ribs 11b are formed on each ventilation surface 11a.

The flexible plate member 2 is made of an elastic material such as rubber, and in the present embodiment, the plate thickness is gradually reduced from one of the left and right ends of the flexible plate member 2 toward the other end. The flexible plate 2 is arranged on the outside air side surface of each ventilation surface 11a of the panel portion 11, and each upper edge thereof is fixed along each upper frame surface 11c of the ventilation surface 11a. Be done.

In the chamber configured as described above, the panel portion 11 is inserted into a ventilation hole formed in a part of the vehicle body (not shown) with the vehicle body fixing portion 12 facing outward, and the vehicle body fixing portion 12 is The ventilation device of the present invention is configured by being directly fixed to the surface with screws or the like.

In such a configuration, for example, when a door or the like is opened or closed, the pressure inside the vehicle compartment temporarily rises, and the pressure is applied to the flexible plate member 2 that closes the ventilation surface 11a from the inside. As a result, the flexible plate member 2 is bent outward, and air corresponding to the pressure increase in the vehicle compartment is discharged to the outside. In this way, when the pressure increase air in the vehicle compartment is discharged and the pressure in the vehicle compartment becomes in equilibrium with the outside air pressure, the flexible plate member 2 returns to its original closed posture due to its own weight and elastic force. The ventilation surface 11a is closed to cut off communication between the inside and outside of the vehicle.

According to the ventilator of the present invention, the flexible plate member 2 is formed so that the plate thickness is gradually reduced from one end portion on either side toward the other end portion. When the flexible plate member 2 returns to the closed posture due to its own weight and elastic force, the upper end edge is fixed to the panel portion 11 and the thinned end from the left or right end portion 2a of the flexible plate member 2 As shown in FIG. 2 by imaginary lines and arrows, the portions 2b are brought into contact with the ventilation surface 11a sequentially with a time difference. In other words, the flexible plate member 2 linearly contacts the ventilation surface 11a while moving obliquely in sequence from the upper end of the thick end portion 2a to the lower end of the thin end portion 2b. Therefore, there is no surface contact at the time of contact, and thus no contact noise due to surface contact is generated as in the past.

FIG. 3 is a perspective view of the chamber according to another embodiment of the present invention as seen from the outside air side.

In this example, the ventilation surface 11a is not formed in a flat plate shape as in the above embodiment, but is curved toward the indoor side. With this configuration, the flexible plate member 2 linearly contacts the ventilation surface 11a as in the above-described embodiment, and in addition, the flexible plate member 2 has the upper end of the thick end portion 2a. When contacting the ventilation surface 11a while moving diagonally toward the lower end of the thin end portion 2b, the contact time difference is further increased by the amount of curvature of the ventilation surface 11a, so that the flexible plate member 2 gently moves to the ventilation surface 11a. Will come into contact with. Therefore, in this embodiment, the effect of suppressing the contact noise is exerted more than in the above embodiment.

FIG. 4 shows a preferred embodiment of the other embodiment shown in FIG. 3, in which the thick portion 2a ′ of the flexible plate member 2 is formed at the center in the left-right direction. At the same time, it is gradually thinned toward the left and right ends thereof. By doing so, the behavior of the flexible plate member 2 can be symmetrically and quickly performed, the response operation becomes faster, and the ventilation performance increases.

In addition, according to the present invention, the center of curvature of the curved ventilation surface 11a 'is eccentric to the left or right, and the thick end 2a of the flexible plate 2 is moved to the ventilation surface 11a' as shown in FIG. Is arranged on the eccentric side end, and the thin end 2b is arranged on the anti-eccentric side end. With such a configuration, even with the flexible plate member 2 that is gradually thinned from one end to the other end, the operation can be performed more quickly.

[0022]

[Effect of the device]

 As is apparent from the above description, according to the present invention, when the ventilation device is closed, the flexible plate material does not come into contact with the ventilation surface, and the flexible plate material gradually abuts the ventilation surface in a linear shape. In addition to preventing collision noise due to surface contact, almost no noise is generated, which increases the comfort level in the passenger compartment.

[Brief description of drawings]

FIG. 1 is a perspective view of a chamber of a ventilation device showing a typical embodiment of the present invention as viewed from the inside of a vehicle.

FIG. 2 is an explanatory view of the behavior of the flexible plate material when it is closed, as seen from the cross section taken along the line AA of FIG.

FIG. 3 is a perspective view of a chamber of a ventilation device showing another typical embodiment of the present invention, as viewed from the inside of a vehicle compartment.

FIG. 4 is a cross-sectional view taken along the line BB of FIG. 3, showing a modified example of the flexible plate material.

FIG. 5 is a plan sectional view of a chamber in a ventilation device according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chamber main body 11 Panel part 11a, 11a 'Ventilation surface 11b Lattice-shaped rib 11c Upper frame surface 12 Fixed part 2 Flexible plate material 2a Thick end 2a' Thick part 2b Thin part

Claims (1)

[Scope of utility model registration request] 1. An upper end edge is fixed to a ventilation opening of a vehicle body, the opening is closed when the vehicle interior pressure is steady, and is opened outward when the indoor pressure rises to discharge the vehicle interior pressure from the opening. A vehicle ventilation device including a flexible plate member, wherein the flexible plate member is formed such that the plate thickness thereof is gradually reduced toward at least one of left and right end portions. apparatus.