JPH0546508U - Ventilation system for vehicles - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a ventilating device for a vehicle, in which the occurrence of a collision noise generated when a flexible plate material that is a valve block an opening for ventilation is eliminated as much as possible. [Structure and operation] Ventilation surface (11) formed on the vehicle body
A flexible plate member having an upper edge fixed to a) and closing the ventilation surface (11a) when the vehicle interior pressure is steady, and opening outward when the indoor pressure rises to discharge the vehicle interior pressure through the ventilation surface (11a). 2 is provided, and the ventilation surface for ventilation (11
Since the stepped portion (11b) is provided at the lower end of (a) and the lower end (2a) of the flexible plate material (2) is extended to the space beyond the stepped portion, the lower end (2a) is also closed. ) Is a step space (11
At e), the vibration is repeated and the damping is stopped so that the lower end (2a) where the most impact noise is generated is not brought into contact with the ventilation surface (11a).

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 material, including the one disclosed in the above publication, is generally formed to have a uniform plate thickness, and the free end portion of the lower end of the flexible plate material is the maximum from the upper end fixing portion. Since it is far away, the free end moves the most when the flexible plate is opened and closed, and the end violently collides with the lower frame surface of the chamber body, causing a large collision with the chamber body. The sound was generated and the habitability in the room was deteriorated.

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. Although the impact noise against the lattice part of the chamber body is surely reduced by the effect, the peripheral thin-walled part of the flexible plate material collides with the peripheral frame part of the chamber main body, and especially the free end thereof is the chamber main body. Since it collides violently with the lower frame surface, the contact noise at that time is still large and cannot be reduced as expected.

The structure in which the free end of the flexible plate is in contact with the lower frame surface of the chamber body is not limited to the vehicle ventilator disclosed in each of the above publications, and the conventional vehicle ventilator is used. Although it is common to all devices and various improvements have been made, it is difficult to sufficiently eliminate the occurrence of impact noise 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 the ventilation surface of a chamber body fitted and fixed in a ventilation hole of a vehicle body, closing the ventilation surface when the pressure inside the vehicle is steady, and closing the outside when the pressure inside the room rises. A ventilating device for a vehicle, comprising a flexible plate member which is opened toward one side to discharge the pressure in the vehicle compartment from the ventilation surface, wherein a step portion is provided at the lower end of the ventilation surface, and the lower end of the flexible plate member is provided. Is extended to a space beyond the stepped portion.

[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. In such a configuration, for example, when a door or the like is opened / closed, the pressure in the vehicle compartment temporarily rises, and the pressure acts on the flexible plate member that closes the ventilation surface from the inside of the vehicle. The flexible plate is bent outward, and the air corresponding to the pressure increase in the vehicle compartment is discharged to the outside. In this way, when the air pressure increase in the passenger compartment is exhausted and the pressure in the passenger compartment is in equilibrium with the outside air pressure, the flexible plate material returns to its original closed posture by its own weight and elastic force, and the ventilation surface To shut off communication between the inside and outside of the vehicle.

According to the ventilator of the present invention, since the lower end of the flexible plate reaches the step space over the step when the block is closed, the flexible plate returns to the closed position by its own weight and elastic force. When returning, its lower end damps and stops while repeating vibration in the step space beyond the step. That is, since the lower end of the flexible plate material, which should hit the bottom frame surface of the ventilation surface most strongly at the time of blockage, extends to the step space, almost no contact noise is generated.

[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 vehicle body near the door of the vehicle or on the rear side of the rear bumper as in the conventional case, and there is no particular feature in its 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 of the inside of the chamber main body when the flexible plate member is closed as seen from a cross section taken along the line AA of FIG. 1. 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 in a ventilation hole (not shown) formed in the vehicle body, and has a panel portion 11 having a downwardly inclined ventilation surface 11 a that is curved and protrudes downward toward the outside air, and the panel portion. And a vehicle body fixing portion 12 formed of a flange along the outer air side peripheral edge of the vehicle body 11. In this embodiment, the ventilation surface 11a is configured in two steps, the lower end of each of which is formed with a stepped portion 11b toward the inside of the vehicle, and each ventilation surface 11a is formed with vertical and horizontal grid-like ribs 11c. ing.

The flexible plate member 2 is made of an elastic material such as rubber. In this embodiment, the flexible plate member 2 has the same plate thickness over the entire surface, and the vertical length thereof is equal to the above two values. The size is set such that the lower end projects from the stepped portion 11b when each ventilation surface 11a of the step is closed. Each flexible plate member 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 11d of the ventilation surface 11a.

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, when the door or the like is opened or closed, for example, the pressure in the vehicle compartment temporarily rises, and the pressure acts on the flexible plate member 2 that closes the ventilation surface 11a from the interior side. Then, the flexible plate member 2 is bent outward, and the 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, and the ventilation surface. 11a is closed and communication between the inside and outside of the vehicle is cut off.

According to the ventilator of the present invention, since the lower end of the flexible plate member 2 reaches the step space 11e beyond the step portion 11b when closed, the flexible plate member 2 has its own weight and elastic force. At the time of returning to the closed posture by, the upper and lower portions are gradually abutted along the vertically curved ventilation surface 11a while sequentially closing, and the lower end 2a vibrates in the step space 11e beyond the step portion 11b. Repeat and repeat to decay and stop. That is, since the lower end 2a of the flexible plate member 2 that is most strongly in contact with the lower frame surface 11f of the ventilation surface 11a when it is closed extends to the stepped space 11e, this is combined with the behavior along the curved ventilation surface 11a. Almost no collision sound is generated.

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 curved as in the above embodiment but has a flat plate shape. In the case of this example, although some collision noise is generated as compared with the above-mentioned embodiment, the lower end 11f of the flexible plate member 2 repeats vibration in the step space 11e beyond the step portion 11b similarly to the above-mentioned embodiment. Since it attenuates and then stops, it does not generate contact noise that would impair the comfort of the passenger compartment.

[0019]

[Effect of the device]

 As is clear from the above description, according to the present invention, the lower end of the flexible plate member that produces the most impact noise when the ventilation device is closed extends to the stepped space portion formed on the ventilation surface, and Since there is no contact, almost no abnormal noise is generated, and the comfort of the vehicle interior is increased.

[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 as seen from a 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 sectional view taken along line BB of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chamber body 11 Panel part 11a Ventilation surface 11b Step part 11c Lattice rib 11d Upper frame surface 11e Step space 11f Lower frame surface 12 Fixing part 2 Flexible plate material 2a Lower end

Claims (1)

[Scope of utility model registration request] 1. An upper edge is fixed to a ventilation surface (11a) of a chamber main body (1) fitted and fixed to a ventilation hole of a vehicle body,
For a vehicle provided with a flexible plate member (2) that closes the ventilation surface (11a) when the vehicle interior pressure is steady and opens outward when the indoor pressure rises to discharge the pressure in the vehicle interior from the ventilation surface (11a) A ventilation device, wherein a step portion (11b) is provided at a lower end of the ventilation surface (11a), and a space (11e) where the lower end (2a) of the flexible plate material (2) exceeds the step portion (11b). ) Is a ventilation device for a vehicle, which is characterized by being extended.