JP2018176899A - Vehicle ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce sounds entering from the outside to the inside of a vehicle without deteriorating, in particular, door closing performance.SOLUTION: A vehicle ventilation device includes: a frame body part 30 provided at a vehicle body, formed with an opening H configured for discharging air in a vehicle cabin to the outside of a vehicle and located in a substantially center part, and comprising a first frame body 31 and a second frame body 32 arranged in parallel to each other, a third frame body 33 connecting one-side ends of the first frame body 31 and the second frame body 32, and a fourth frame body 34 connecting the other-side ends of the first frame body 31 and the second frame body 32. The vehicle ventilation device further includes: a first support member 41 extending along the first frame body 31 and erected from the first frame body 31 to the vehicle exterior side; a second support member 42 extending along the second frame body 32 and erected from the second frame body 32 to the vehicle exterior side; and a first covering plate 51 extending from the first support member 41 to the second support member 42 side without contacting with the second support member 42 and partially covering the opening H from the vehicle exterior side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilating apparatus for a vehicle which is provided on a vehicle body and releases air in the passenger compartment to the outside of the vehicle.

  As shown in FIGS. 10 to 13, for example, a vehicle ventilating apparatus 10 called a ventilator or outlet for discharging air in the vehicle compartment to the outside of the vehicle when the door 2 is closed is provided behind the rear bumper 1 of the vehicle. It is done.

  An opening H is formed substantially at the center of the vehicle ventilating apparatus 10, and the opening H usually has a plurality of (in this case, three) flap valves 11 (11A, 11B, 11C) is provided. Then, when the door 2 is closed, the air pressure from the vehicle compartment is applied to the flap valve 11 so that the flap valve 11 opens to the outside of the vehicle to discharge the air out of the vehicle.

  In such a vehicle ventilating apparatus 10, if the area of the opening H for discharging the air is increased, the amount of discharged air increases and the door closing property is improved, but on the other hand, noise from the outside of the vehicle There is also a problem that the amount of intrusion to the inside of the vehicle through the opening H is increased, and the soundproofness is deteriorated.

  On the other hand, what carried out the noise countermeasure in the peripheral part of the ventilating device 10 for vehicles attached to the vehicle body is known (patent documents 1 thru | or 3).

Patent No. 3791378 gazette JP, 2015-3677, A Patent No. 5741455 gazette

In the invention described in Patent Document 1, a sound absorbing material made of non-woven fabric or the like is provided on the inner side of a vehicle ventilation device.
On the other hand, according to the invention described in Patent Document 2, as shown in FIG. 14, a cover 12 is provided for covering the vehicle ventilating apparatus 10 from the outside of the vehicle. A plurality of 13 are formed.
The invention described in Patent Document 3 also has a cover that covers the vehicle ventilation device from the outside of the vehicle, and an open portion for air discharge is formed above the cover. In addition, the ventilating apparatus for vehicles described in patent document 3 provided the separator for making the penetration | invasion path | pass of the sound from the open part formed in the upper direction to the opening part for discharging | emitting air into multiple in multiple. Therefore, the flap valve 11 as shown in FIGS. 11, 12 and 14 is not provided.

However, since the invention described in Patent Document 1 is provided with the sound absorbing material on the inner side of the vehicle ventilating apparatus, the sound invading from the outer side to the inner side of the vehicle is sufficiently soundproofed compared with those provided on the outer side. I can not do it. In particular, the sound absorbing material described in Patent Document 1 can not be set outside the vehicle because it is made of non-woven fabric and has no water resistance.
On the other hand, the invention described in Patent Document 2, as shown in FIG. 14, is provided with the cover 12 for covering the vehicle ventilating device 10 on the vehicle outside of the vehicle ventilating device 10, so it has excellent soundproofing performance. Since the air is only discharged through the slits 13 provided in the cover 12, it is difficult to extract a sufficient amount of air, and there is a problem that the door closing performance is deteriorated.
Further, in the invention described in Patent Document 3, sound is made to interfere by causing sound that has invaded from the open part for air discharge to pass through adjacent intrusion paths by the separator and generate sound interference to reduce sound. Therefore, the soundproofing performance is low compared to Patent Documents 1 and 2 covered with a sound absorbing material or a cover. In addition to the air discharge opening being only formed above the cover covering the opening, the air discharged from the inside of the vehicle when the door is closed once enters the cover and collides with the separator. Since the air may escape smoothly, the door may not be closed easily.

  Therefore, an object of the present invention is to provide a vehicular ventilating apparatus capable of reducing the noise that intrudes from the outside of the vehicle into the interior of the vehicle without particularly deteriorating the door closing performance.

In order to achieve the above object, the vehicle ventilating apparatus according to the present invention is provided in a vehicle body, and an opening (H) for releasing air in the passenger compartment to the outside of the vehicle is formed substantially at a central portion and parallel to each other Body (31), second frame (32), third frame (33) connecting one ends of the first frame (31) and the second frame (32), and the first frame A vehicle ventilating apparatus (20) comprising: a frame main body (30) comprising a fourth frame (34) connecting the other end of the second frame (32) with the frame (31);
A first support member (41) extending along the first frame (31) and standing upright from the first frame (31) toward the vehicle exterior;
A second support member (42) extending along the second frame (32) and standing upright from the second frame (32) toward the vehicle exterior;
It extends from the first support member (41) toward the second support member (42) without contacting the second support member (42), and partially covers the opening (H) from the outside of the vehicle And a first cover plate (51).

  Further, the present invention extends from the second support member (42) toward the first support member (41) side to partially cover the opening (H) from the vehicle outer side, and 51) is characterized in that it comprises a second cover plate (52) provided without contacting and overlapping.

  In the invention, a sound absorbing material is welded to the cover plate (51, 52).

  Further, the present invention is characterized in that a sound absorbing material (60) is welded to the first support member (41) and the second support member (42).

  Furthermore, the present invention is characterized in that the sound absorbing material (60) is made of a highly foamed elastomer.

  In the present invention, the first support member (41) and the second support member (42) are concave grooves (37a, 37) formed on the first frame (31) and the second frame (32). 38a), respectively.

  The symbols in parentheses indicate corresponding elements or items described in the drawings and the modes for carrying out the invention described later.

According to the present invention, the first support member is erected from the first frame of the frame main body, and the second support member is erected from the second frame. Since the first cover plate that covers the opening from which the vehicle is released outside the vehicle is provided, noise from the outside of the vehicle can be prevented from entering the inside of the vehicle.
Moreover, since the first cover plate extends from the first support member toward the second support member without contacting the second support member, and partially covers the opening from the outside of the vehicle, the first cover plate The central part and the upper and lower parts outside the vehicle are open. Therefore, a wide path for releasing a sufficient amount of air from the inside of the vehicle to the outside of the vehicle when the door is closed is maintained, and the air is released smoothly, so that it is possible to suppress the deterioration of the door closing performance.
According to such a ventilating apparatus for a vehicle, the prevention of sound entering from the outside of the vehicle and the securing of the amount of air discharged from the inside of the vehicle when the door is closed are performed in a well-balanced manner.

  Further, according to the present invention, the second cover plate is also provided on the second support member side to partially cover the opening from the vehicle outer side, and the second cover plate contacts or overlaps the first cover plate. Since it is not provided, air can be smoothly discharged from the inside of the vehicle to the outside of the vehicle from the approximate center of the opening.

Further, according to the present invention, the sound absorbing material is welded to the first cover plate and the second cover plate, so that the sound absorbing effect is improved and the sound absorbing material can be easily made from the first cover plate and the second cover plate. It does not peel off and can also be manufactured integrally. Furthermore, since the sound absorbing material is also welded to the first support member and the second support member, the sound absorbing effect is similarly improved, and the sound absorbing material is not easily peeled off, and integral manufacture is also possible.
As the sound absorbing material, an EPDM material made of a highly foamed elastomer can be used, and since the EPDM material is excellent in water resistance, it may be provided outside the vehicle without any problem.

  Further, according to the present invention, since the first support member and the second support member are respectively fitted in the concave grooves formed in the first frame and the second frame, they are fixed in a stable state. .

It is a perspective view showing the ventilating apparatus for vehicles concerning the embodiment of the present invention. It is the AA expanded sectional view of FIG. 10 which shows the state in which the vehicle ventilating apparatus which concerns on embodiment of this invention was provided. It is a BB line expanded sectional view of FIG. 10 which shows the state in which the vehicle ventilating apparatus which concerns on embodiment of this invention was provided. It is an enlarged perspective view which shows the structure of the 1st support member circumference | surroundings shown in FIG. It is a BB line expanded sectional view of Drawing 10 showing the state where another vehicular ventilator concerning the embodiment of the present invention was provided. It is an enlarged perspective view which shows the structure of another 1st support member periphery shown in FIG. It is a graph which shows the relationship between the frequency and the sound pressure level in the case where a sound-absorbing material is provided in the vehicle outer side, and the case where it provides in the vehicle inner side. It is a graph which shows the frequency and the relationship of a sound absorption coefficient after water resistance of a sound absorbing material, (a) is a sound absorbing material with which the ventilating apparatus for vehicles concerning this embodiment is equipped, (b) is fiber system sound absorption concerning a conventional example. Shows the material. It is a graph which shows the relationship between a frequency and a sound pressure level in the case where it does not provide with the case where vehicle ventilation equipment concerning an embodiment of the present invention is provided at the time of driving. It is an appearance perspective view of a car. It is a front view which shows the ventilating apparatus for vehicles which concerns on a prior art example. It is the AA line expanded sectional view of FIG. 10 which shows the state in which the vehicle ventilating apparatus which concerns on a prior art example was provided. It is a BB line expanded sectional view of FIG. 10 which shows the state in which the vehicle ventilating apparatus which concerns on a prior art example was provided. It is a perspective view which shows another vehicle ventilating apparatus based on a prior art example.

A vehicle ventilator according to an embodiment of the present invention will be described with reference to the drawings. The same parts as in the conventional example are given the same reference numerals.
As shown in FIGS. 1 to 3 and 10, the vehicle ventilating apparatus 20 is provided at the back of a rear bumper 1 of an automobile, and is an outlet that discharges the cabin air outside the vehicle when the door 2 is closed.
Vehicle ventilating apparatus 20 includes a frame main body portion 30 formed in a cylindrical shape and formed of a first frame 31, a second frame 32, a third frame 33, and a fourth frame 34. An opening H is formed in a substantially central portion, and three flap valves 11A, 11B and 11C which open only toward the outside of the vehicle are provided at the opening H at the upper, middle and lower sides.

  The first frame 31 and the second frame 32 constituting the frame main body portion 30 are plate members extending in the vertical direction, and are arranged in parallel with each other with the plate surfaces facing each other. The third frame 33 is a plate-like member that connects the upper ends (one ends) of the first frame 31 and the second frame 32 and extends horizontally, and the fourth frame 34 is a first frame 31. And the lower ends (one ends) of the second frame 32 are connected to each other, and the plate-like member is a curved member so as to project downward.

At the outer side end of the frame main body 30, a flange 35 surrounding the entire outer side end of the frame and projecting outward is provided.
Support shafts 11Aa, 11Ba, 11Ca for supporting upper ends of the flap valves 11A, 11B, 11C are rotatably attached to the inner side of the frame main body 30. The flap valves 11A, 11B and 11C may have any form as long as they can be opened toward the vehicle outside, but in the present embodiment, when the flap valves 11A, 11B and 11C are closed, their lower ends are closed. The outer side edge portions of the shelf plate portions 36A, 36B, 36C horizontally disposed on the vehicle inner side of the frame main body portion 30 are provided so as to be in contact with and inclined.

Guide rails 37 and 38 having recessed grooves 37a and 38a formed toward the vehicle outside are provided on the vehicle outside of the left and right side surface portions of the flange portion 35, and these recessed grooves 37a and 38a are shown in FIG. The first support member 41 and the second support member 42 are respectively fitted.
The first support member 41 extends vertically along the first frame 31 and is erected from the first frame 31 via the flange portion 35 and the guide rail 37 toward the vehicle outside, and the second support member 42 Extends up and down along the second frame 32, and is erected from the second frame 32 via the flange portion 35 and the guide rail 38 toward the vehicle outside to form a screen structure. The first support member 41 and the second support member 42 have a substantially T-shaped cross section and, as shown in FIG. 1, the head thereof is fitted into the concave grooves 37a and 38a of the guide rails 37 and 38 while being slid. Is fixed. In FIG. 1, the second support member 42 with the second cover plate 52 is slidably fitted in the guide rail 38, but the first support member 41 with the first cover plate 51 is a slide in the guide rail 37. It is also the same as when it is inserted.

Inside the first support member 41, a plate-like first cover plate 51 which extends toward the second support member 42 and partially covers the opening H from the vehicle outer side is provided. Inside the member 42, a plate-like second cover plate 52 which extends toward the first support member 41 and partially covers the opening H from the vehicle outer side is provided.
The first support member 41 and the second support member 42 have the same size and are symmetrical with each other, and the first cover plate 51 and the second cover plate 52 provided thereon have the same size, and the first support member 41 and the second support plate 42 have the same size. They are disposed symmetrically with respect to the support member 42.

The sound absorbing material 60 is welded so as to surround the first support member 41 and the second support member 42 including the first cover plate 51 and the second cover plate 52.
The amount T of protrusion of the first cover plate 51 covered with the sound absorbing material 60 from the first support member 41 and the amount of protrusion T of the second cover plate 52 covered with the sound absorbing material 60 from the second support member 42 are In the present embodiment, the first cover plate 51 and the second cover plate 52 do not cover the opening H largely from the vehicle outer side by about 1/3 to 1/4 of the lateral width (left and right width) S of the opening H. It is set up as follows. In this embodiment, it is 1⁄4. That is, the area of 1⁄2 (= 1 − ((1⁄4) × 2)) of the horizontal width (left and right width) S of the opening H is covered by the first cover plate 51 and the second cover plate 52 from the vehicle outside It is assumed that the area is not covered. Further, the upper and lower portions on the vehicle outside of the opening H are also uncovered by the first cover plate 51 and the second cover plate 52, and thus are open.
Further, the end of the first support member 41 and the end of the second support member 42 covered with the sound absorbing material 60 are provided to abut on the back surface of the rear bumper 1.

As the sound absorbing material 60, a highly foamed elastomer is used. In particular, it is preferable to use an EPDM foam having a specific gravity of 0.05 to 0.4. In the present embodiment, an EPDM material is used.
In addition, for the first support member 41, the second support member 42, the first cover plate 51, and the second cover plate 52, a resin such as PE (pre-ethylene) is used.

According to the vehicle ventilating apparatus 10 configured in this manner, the first support member 41 with the first cover plate 51 and the second support member 42 with the second cover plate 52 release the cabin air to the outside of the vehicle. Since the opening H is provided to cover the outside of the vehicle, noise from the outside of the vehicle can be prevented from entering the inside of the vehicle.
That is, as shown by the arrow X in FIGS. 2 and 3, the sound incident from the vehicle outside through the rear bumper 1 is mainly prevented by the first cover plate 51 and the second cover plate 52, As indicated by the arrow Y, the sound incident from the rear tire side is mainly prevented by the first support member 41 and the second support member 42.

Moreover, the first support member 41 with the first cover plate 51 and the second support member 42 with the second cover plate 52 are disposed such that the first cover plate 51 and the second cover plate 52 do not abut or overlap with each other. Since the central part and the upper and lower parts of the opening H outside the vehicle are open, a wide path for releasing a sufficient amount of air from the inside of the vehicle when the door is closed is secured, and the air smoothly Released.
That is, as shown by the arrow Z in FIGS. 2 and 3, when the door 2 is closed, the flap valves 11A, 11B, 11C are opened from the inside of the vehicle, and the air released from the opening H to the vehicle outside is: Due to the presence of the first cover plate 51 and the second cover plate 52, they are dispersed in the lateral direction (left and right direction) from the central portion to the first support member 41 side and similarly from the central portion to the second support member 42 side It is emitted from the open vertical direction.
As a result, the deterioration of the door closing performance can be suppressed.

  Moreover, since the sound absorbing material 60 is welded so as to surround the first support member 41 and the second support member 42 including the first cover plate 51 and the second cover plate 52, compared with the case where these are not provided. A further high soundproofing effect can be obtained. Also, although the sound absorbing material 60 may be attached separately to the first and second cover plates 51 and 52 and the first and second support members 41 and 42, in the present embodiment, the first cover plate 51 is welded. When manufacturing the attached first support member 41 and the second support member 42 with the second cover plate 52, the sound absorbing material 60 can be simultaneously formed integrally.

  In the present embodiment, the first cover plate 51 and the second cover plate 52 are provided on both the first support member 41 and the second support member 42, but as shown in FIG. The first cover plate 51 may be provided only in one direction, and the second cover plate 52 may not be provided on the second support member 42 side. The amount T of protrusion of the first cover plate 51 covered with the sound absorbing material 60 from the first support member 41 is such that it covers half of the lateral width (left and right width) S of the opening H in this embodiment.

Further, as shown in FIG. 6, the sound absorbing material 60 is provided on the first cover plate 51 and the inner surface of the first support member 41, that is, the surface opposite to the second support member 42 side, and the second cover on the opposite side. Alternatively, welding may be performed only on the surface opposite to the plate 52 and the inner side of the second support member 42, that is, the first support member 41 side. Also, the sound absorbing material 60 may be welded only to the first cover plate 51 and the second cover plate 52.
Furthermore, instead of welding the sound absorbing material 60, the materials of the first cover plate 51 and the second cover plate 52 themselves can be made excellent in sound absorption, or in addition to this, the first support member 41 and the second support The material of the member 42 itself may be made of one excellent in sound absorption.
The first cover plate 51, the second cover plate 52, the first support member 41 and the second support member 42 are not made of a material that is particularly excellent in sound absorption, instead of welding the sound absorbing material 60. Also, if the vehicle outside of the opening A is covered with the first support member 41 with the first cover plate 51 and the second support member 42 with the second cover plate 52, a sound absorbing effect can be obtained, and It ensures the discharge of air from the door and does not deteriorate the door closing performance.

Further, in the present embodiment, guide rails 37 and 38 having concave grooves 37a and 38a formed toward the vehicle outer side are provided on the vehicle outside of the left and right side surface portions of the flange portion 35. Although the first support member 41 and the second support member 42 are fitted together, any embodiment is possible as long as the first support member 41 and the second support member 42 are attached to the outer side of the frame main body 30. It may be
For example, a concave groove into which the first support member 41 and the second support member 42 may be fitted may be formed on the vehicle outer side of the flange portion 35, or the frame main body portion 30 is configured instead of providing the flange portion 35 The recessed grooves may be formed directly on the outer side of the first frame 31 and the second frame 32. In addition, the first support member 41 and the second support member 42 may be integrally formed on the outer side of the frame main body portion 30.

  Further, in the present embodiment, although the flap valves 11A, 11B, and 11C that rotate toward the vehicle outer side are provided at the opening H, even the flap valves 11A, 11B, and 11C are not provided. It is applicable.

  Next, as a result of experiment in the case where the sound absorbing material 60 used in the present embodiment is provided outside the vehicle and when it is provided outside the vehicle, the graph showing the relationship between the frequency and the sound pressure level shown in FIG. It was confirmed that it is preferable to provide the In particular, since the sound absorbing material 60 is made of an EPDM material and is excellent in water resistance, there is no particular problem even if it is provided outside the vehicle. That is, as can be seen from the graph showing the relationship between the frequency and the sound absorption coefficient shown in FIG. 8A, the EPDM material does not decrease the peak value of the sound absorption performance after water resistance, so that it can be set outside the vehicle Become. On the other hand, in the case of the conventionally used fiber-based sound absorbing material, as can be seen from the graph showing the relation between the frequency and the sound absorption coefficient shown in FIG. It is not preferable because it In addition to the fiber based sound absorbing material, a urethane based sound absorbing material is also not preferable.

  Then, when the vehicle ventilation device 20 according to the embodiment of the present invention is provided and travel evaluation is performed, from the graph showing the relationship between the frequency and the sound pressure level, especially in the frequency band around 1000 Hz, compared to the case where it is not provided. It was confirmed that the sound pressure level at the driver's seat ear position can be reduced.

DESCRIPTION OF SYMBOLS 1 Rear bumper 2 door 10 Ventilation system for vehicles 11 Flap valve 11A, 11B, 11C Flap valve 11Aa, 11Ba, 11Ca Support shaft 12 Cover 13 Slit 20 Ventilation system for vehicles 30 Frame main part 31 1st frame 32 2nd frame 33 third frame 34 fourth frame 35 flange portion 36A, 36B, 36C shelf plate portion 37, 38 guide rail 37a, 38a recessed groove 41 first support member 42 second support member 51 first cover plate 52 second cover Board 60 Sound absorbing material H opening

Claims (6)

The first frame, the second frame, and the ends of the first frame and the second frame, which are provided in the vehicle body and have an opening at the substantially central portion for discharging the vehicle interior air to the outside of the vehicle. A ventilating apparatus for a vehicle comprising: a third frame connecting the two frames; and a frame main body including a fourth frame connecting the other ends of the first frame and the second frame,
A first support member extending along the first frame and standing upright from the first frame toward the vehicle exterior;
A second support member extending along the second frame and standing upright from the second frame toward the vehicle exterior;
A first cover plate that extends from the first support member toward the second support member without contacting the second support member and partially covers the opening from the vehicle outer side. Vehicle ventilation system.   A second cover plate extends from the second support member toward the first support member, partially covers the opening from the vehicle outer side, and is provided without contacting and overlapping the first cover plate. The ventilation system for a vehicle according to claim 1,   The vehicle ventilation device according to claim 1, wherein a sound absorbing material is welded to the cover plate.   The vehicular ventilating apparatus according to claim 3, wherein a sound absorbing material is welded to the first support member and the second support member.   5. The vehicle ventilating apparatus according to any one of claims 1 to 4, wherein the sound absorbing material is made of a highly foamed elastomer.   The first support member and the second support member are respectively fitted in concave grooves formed in the first frame and the second frame. Vehicle ventilation system according to any one.