JP2552372Y2 - Vent duct structure for vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vent duct structure for a vehicle which allows an airbag module to be arranged without sacrificing the cross-sectional area of the vent duct and without affecting the deployment of the airbag.

[0002]

2. Description of the Related Art As is well known, an airbag system includes:
In the event of a frontal collision that exceeds the set limit of the vehicle, the airbag is inflated to reduce the impact on the occupant in combination with the seat belt.

[0003] This airbag system mainly includes an airbag module including an airbag inflator, a sensor for detecting deceleration provided at a fixed location, and a detection signal from the sensor to a certain set limit. And a control device that activates the inflator to inflate the airbag when the pressure exceeds the limit. The arrangement of the airbag module in such an airbag system is substantially determined at the boarding position due to its function. In other words, in the passenger airbag module, the riding posture of the passenger in the passenger seat is more difficult to determine than in the driver's seat,
The bag deployment volume is about twice that of the driver's seat module. For this reason, this passenger seat airbag module
For example, Japanese Utility Model Application Laid-Open No. 63-100351 and Japanese Utility Model Application
As described in JP-A-101255, it is provided on the vehicle front side of the airbag outlet of the instrument panel.

[0004] Generally, a vent grill is provided on the side of the airbag outlet, and a side vent duct for guiding air from an air conditioning unit such as a heater is connected to the vent grill. Conventionally, the vent duct is disposed at a position where the passenger seat airbag module is disposed or slightly behind the vehicle. For this reason, when the airbag module is arranged at the above-mentioned position, the side vent cannot be arranged.

[0005]

In view of the above, it has been a conventional practice to prioritize the establishment of the bag and to bypass the side vent to the front of the module at the expense of its cross-sectional area and duct length. Alternatively, the airbag module is disposed at the position of the conventional airbag module while sacrificing its cross-sectional area significantly. As a result, the detour part of the sand vent, the noise at the time of ventilation occurs with the increase of the bent part of the changing part of the cross-sectional area, or the air volume decreases by reducing the cross-sectional area of the side vent, Normally, the passenger on the passenger side is forced to sacrifice.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a vent duct structure for a vehicle in which an airbag module can be arranged without sacrificing the cross-sectional area of the vent duct and without affecting the deployment of the bag. The purpose is to provide.

[0007]

In order to achieve the above object, a vehicle vent duct structure according to the present invention is characterized in that air from an air conditioning unit of a vehicle having an airbag for a passenger seat is supplied to an instrument panel. In the vehicle vent duct structure for guiding the inside of the instrument panel to the vent grill on the passenger seat side, an airbag door is provided on the passenger seat side of the instrument panel so as to be openable and closable, and the airbag door side accommodates the airbag. An opening is provided on the front and both sides, and the front opening edge is brought into contact with the back of the airbag door, and the openings on both sides are aligned with the duct opening on the air conditioning unit side and the duct opening on the vent grill side, respectively. And an air conditioning unit side duct and a vent grip via a gap provided between the housing and the back surface of the airbag door. And summarized in that communicating the side duct.

According to a second aspect of the present invention, there is provided a vehicle vent duct structure for guiding air from an air conditioning unit of a vehicle having an airbag for a front passenger seat to an inside of an instrument panel to a vent grill on a front passenger seat side. In the duct structure, an airbag door provided on the passenger side of the instrument panel so as to be openable and closable, a housing body for housing the airbag, and an air conditioner located between the housing body and the airbag door. The gist of the present invention is to have a partition body which is partitioned so as to communicate between the unit side duct opening and the vent grill side duct opening, and which is disposed so as to be detachable.

[0009]

According to the first aspect of the present invention, there is provided an airbag door provided on the passenger side of the instrument panel so as to be openable and closable, and a housing for housing the airbag.
Further, openings provided on the front side and both side surfaces of the container on the side of the airbag door make the edges of the front opening abut against the back surface of the airbag door, respectively, and the openings on both side surfaces are respectively connected to the air conditioning unit. The air conditioning unit side duct and the vent grill side duct are disposed through the gap provided between the housing and the back surface of the airbag door since the side duct opening and the vent grill side duct opening are disposed so as to coincide with each other. The air from the air conditioning unit can be guided to the vent grill through the vent duct.

According to the present invention, a partition is provided between an airbag door which can be opened and closed on the passenger side of the instrument panel and a housing for housing the airbag. Since the partitioning body is partitioned so as to communicate between the air conditioning unit side duct opening and the vent grill side duct opening and is detachably disposed, the air conditioning unit side duct and the vent grill side duct communicate with each other, and the air conditioning unit is connected. Can be led to the vent grill.

Further, in the inventions according to the first and second aspects of the present invention, since the airbag door is opened by the inflation of the airbag when the airbag is inflated, the door does not become an obstacle.
The deployment of the airbag is performed smoothly. Therefore, the vent duct does not need to bypass the airbag or reduce the cross-sectional area. Further, by sealing each contact surface with a sealing material, airtightness can be improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. 1 to 5 show one embodiment of a vehicle vent duct structure of the present invention.

In FIG. 1, an instrument panel 5 is provided below the front window seal glass 3 of the automobile 1. On the passenger side of the instrument panel 5, a deployment door 7 as an airbag door is provided.
Are formed. This deployment door 7 has a hinge structure at one end on the side of the wind seal glass 3 and is configured to be rotatable around the instrument panel 5 around the one end, and is configured to be openable and closable. Therefore, when the airbag is inflated or the like, the hinge is opened about the rotation axis. A vent grille 9 is provided on the instrument panel 5 in a lateral direction of the deployment door 7.
An airbag module 11 is provided inside the instrument panel 5. The airbag module 11 accommodates an inflator (not shown) fixed to the member 13, a folded airbag 15 having one end attached to the inflator, and a folded airbag 15, and the bottom portion is attached to the member 13. An airbag case 17 as a fixed container is provided.
The airbag 15 is made of a material that does not deteriorate even at high or low temperatures. The airbag case 17 houses the airbag 15 and has an opening 19 formed on the upper side so as not to hinder the deployment of the airbag 15. At the upper end of the airbag case 17, contact portions 21, 23 and a duct contact portion 2
5, 27 are provided. On the back side of the deployment door 7, two standing plates 2 are provided at a constant interval.
9 and 31 are provided, and seal members 33 and 35 are fixed to the ends of the upright plates 29 and 31. These standing plates 2
The ends of 9 and 31 are brought into contact with the contact portions 21 and 23 via the sealing materials 33 and 35 to form the shape of the duct D. Duct contact portions 25 and 27 are provided on the left and right of the upper end of the airbag case 17 of the airbag module 11.
6, 28 are fixed.

The hollow duct vent duct 39 is partially cut off to form a space, so that an upstream duct 39a and a downstream duct 39b are formed. The upstream duct 39a has a contact portion 41a formed on the front surface of the vehicle to contact the upright plate 29.
A contact portion 43a with which the duct contact portion 25 of the airbag case 17 contacts from the lower side in the figure is formed on the lower surface of a. Similarly, a contact portion 41b that contacts the upright plate 29 is formed on a surface of the downstream duct 39b on the vehicle front side, and the airbag case 1 is formed on a lower surface of the upstream duct 39a.
7 is the contact portion 4 where the duct contact portion 25 contacts from below in the figure.
3b is formed. In addition, a door contact surface 45a that contacts the inner peripheral surface of the deployment door 7 is formed on the upper surface of the upstream duct 39a, and the upstream duct 39a
A contact surface 47 that comes into contact with the upright plate 31 is provided on the rear surface of the vehicle.
a is formed. Similarly, on the upper surface of the downstream duct 39b, a door contact surface 45b that contacts the inner peripheral surface of the deployment door 7 is formed, and the downstream duct 39b
A contact surface 47 that comes into contact with the upright plate 31 is provided on the rear surface of the vehicle.
b is formed.

In such an embodiment, the airbag module 11 has a structure in which the duct contact portions 25 and 27 of the airbag case 17 have the upstream duct 39 a and the downstream duct 3.
9b is fixed in contact with the contact surfaces 43a and 43b. In this state, the space between the upstream duct 39a and the downstream duct 39b is larger than the opening 19 provided in the airbag case 17, and does not hinder the deployment of the airbag 15. When the deployment door 7 is closed, the upright plates 29, 3 on the back side of the deployment door 7 are closed.
The first seal members 33 and 35 abut against the abutting portions 21 and 23 of the airbag case 17, and the inner peripheral surface of the deployment door 7 has a contact surface 45 a of the upstream duct 39 a and a contact surface of the downstream duct 39 b. 45b via a sealing material, and the upright plate 29 of the deployment door 7 is connected to the upstream side duct 39a.
Abuts against the contact surface 41a of the upstream duct 39a and the contact surface 41b of the downstream duct 39b.
a, and by contacting the contact surface 47b of the downstream duct 39b, the duct D is formed and becomes a part of the vent duct 39. Therefore, according to the above description, the sealing surface is pressed, the airtightness is maintained, and the air can be guided to the vent grill 9 without reducing the cross-sectional area of the vent duct 39.

In the event of a collision, the deployment door 7 is opened due to the deployment of the bag. At the same time as the deployment door 7 is opened, the sealing surface is detached, and the airbag 15 forming a part of the duct is opened. It expands as shown in FIG. 6 to protect the occupant.

FIGS. 7 and 8 show a second embodiment of the present invention. In this embodiment, the portions other than the characteristic portions are denoted by the same reference numerals used in the first embodiment, and the description thereof will be omitted. In this embodiment, a plate 55 provided with hinges 51, 53 is rotatably fixed to the back surface of the deployment door 7A via the hinge 51, and the deployment door 7A
A contact piece 57 is provided on the back surface of the plate body 55 at a predetermined distance from the plate body 55 in an upright shape.
A box 63 constituting a partition body is formed by abutting the end portions of the box member via a sealing material 61.

The vent duct 69 is partially cut off to form a space, so that the upstream duct 69
a, a downstream duct 69b is formed. Upstream duct 6
An L-shaped plate body 5 is provided on the front and lower surfaces of the vehicle 9a.
5 is formed in an L-shape with a contact portion 71a that contacts the back surface.
A sealing material 73a is fixed to the contact portion 71a.
The upper surface of the upstream side duct 69a has a contact surface 7 which is in contact with the shape of the inner peripheral surface of the deployment door 7A without any gap.
5a are formed, and the sealing material 7 is provided on the contact surface 75a.
7a is fixed. Similarly, on the surface on the vehicle front side and the lower surface of the downstream side duct 69b, an abutting portion 71b that abuts on the back surface of the L-shaped plate 55 is formed in an L shape, and the abutting portion 71b Is fixed with a sealing material 73b. The deployment door 7 is provided on the upper surface of the upstream duct 69b.
A contact surface 75b that contacts the shape of the inner peripheral surface of A without a gap is formed, and a sealing material 77b is fixed to the contact surface 75b.

In the second embodiment, the airbag module 11 is provided inside the instrument panel 5.
And the upstream duct 69a and the downstream duct 69b are shown in FIG.
And at a predetermined position as shown in FIG. Here, the plate 55 of the deployment door 7A is L-shaped, and the end of the plate 55 contacts the contact piece 57. Thereby, a box 63 is formed on the back surface of the deployment door 7A. When the deployment door 7A is closed in such a state, the rear surfaces of the L-shaped plate 55 on the contact surfaces 71a and 71b of the upstream duct 69a and the downstream duct 69b are interposed via the seal members 73a and 73b. Abut, upstream duct 6
9a, the back surface of the deployment door 7A is attached to the contact surfaces 75a, 75b of the downstream duct 69b with the sealing materials 77a, 77b.
b, and the box body 63 communicates with the upstream duct 69a and the downstream duct 69b to form one duct. Thereby, the air from the air conditioning unit (not shown) is supplied to the upstream duct 69a and the box 6
3. It is led to the vent grill 9 through the downstream duct 69b.

On the other hand, in the event of a collision, the deployment door 7A opens due to the deployment of the airbag 15, and at the same time, all the sealing surfaces come off, as shown in FIG. The body 63 extends from the hinge portions 51 and 53 to become a simple plate body 55, which is crushed so as not to hinder the deployment of the airbag 15.

As described above, in this embodiment, the airbag 15
Of the vent duct 39, and there is no reduction in the cross-sectional area of the vent duct 39, and no wind noise or the like.

FIGS. 10 and 11 show a third embodiment of the present invention. Also in the third embodiment, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, a plate 55A having hinges 51, 53, 81 is fixed to the back surface of the deployment door 7B via the hinges 51, 81, and the plate 55A is formed in an L-shape to form a box. Body 63A
To form The deployment door 7B is configured to bend at the hinge 83. This box 6
Only the structure of 3A is different from that of the second embodiment, and the other configuration is the same as that of the second embodiment.

In the third embodiment, the airbag module 11 is provided inside the instrument panel 5.
The upstream duct 69a and the downstream duct 69b are the same as those in FIG.
0 and as shown in FIG.
Here, the plate 55A on the back surface of the deployment door 7B
Is L-shaped. Thereby, the deployment door 7
A box 63A is formed on the back surface of B. When the deployment door 7B is closed in such a state, the upstream duct 6 is closed.
9a, L is applied to the contact surfaces 71a, 71b of the downstream duct 69b.
The back surface of the plate-shaped body 55A is formed with the sealing members 73a, 73a.
b, and the back surface of the deployment door 7A is in contact with the contact surfaces 75a, 75b of the upstream duct 69a and the downstream duct 69b via the seal members 77a, 77b. 63A is the upstream duct 69a
And the downstream side duct 69b are communicated to form one duct. Thus, air from an air conditioning unit (not shown) is guided to the vent grill 9 through the upstream duct 69a, the box 63, and the downstream duct 69b.

On the other hand, in the event of a collision, the deployment door 7A is opened by the deployment of the airbag 15, and at the same time, each sealing surface is disengaged. As shown in FIG. 63A extends from the hinge portions 51, 53, 81 to form a simple plate 55A, which is crushed so as not to hinder the deployment of the airbag 15.

According to this embodiment, the same operation and effect as those of the second embodiment can be obtained.

[0026]

As described above, according to the first aspect of the present invention, a part of the airbag door and a part of the airbag module form a vent duct. Therefore, there is no need to sacrifice the cross-sectional area of the side vents, and the generation of noise due to ventilation is suppressed and the air volume does not decrease. Therefore, a comfortable air-conditioning environment can be provided to the passenger on the passenger side.

In the invention according to the second aspect, the vent duct is formed on the back surface of the airbag door by using the partition body so as not to hinder the deployment of the airbag, so that the sectional area of the vent duct is sacrificed. It is possible to arrange the airbag module without affecting the deployment of the airbag.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a vent duct structure for a vehicle according to the present invention.

FIG. 2 is an exploded perspective view showing the same embodiment.

FIG. 3 is a perspective view showing a duct of the embodiment.

FIG. 4 is a perspective view showing a seal structure between the airbag module and the duct of the embodiment.

FIG. 5 is an explanatory view of a main part showing a relationship between a duct and a deployment door of the embodiment.

FIG. 6 is an explanatory view when the airbag of the embodiment is deployed.

FIG. 7 is a side view showing a second embodiment of the present invention.

FIG. 8 is an exploded perspective view of the same embodiment.

FIG. 9 is an explanatory diagram of the embodiment at the time of development.

FIG. 10 is a side view showing a third embodiment of the present invention.

FIG. 11 is an exploded perspective view of the same embodiment.

FIG. 12 is an explanatory diagram of the embodiment at the time of development.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile 3 Front window seal glass 5 Instrument panel 7 Deployment door 7A Deployment door 7B Deployment door 9 Vent grill 11 Airbag module 13 Member 15 Airbag 17 Airbag case 19 Opening 21 Contact part 23 Contact part 25 Duct contact part 27 Duct contact part 39a Upstream duct 39b Downstream duct 51 Hinge 53 Hinge 55 Plate 55A Plate 57 Contact piece 69a Upstream duct 69b Downstream duct 81 Hinge 83 Hinge

Claims (2)

(57) [Scope of request for utility model registration] 1. A vehicle vent duct structure for guiding air from an air conditioning unit of a vehicle having a passenger airbag to an inside of an instrument panel to a vent grill on a passenger seat side, wherein a passenger seat side of the instrument panel is provided. An airbag door that is provided to be openable and closable on the airbag, and that has an opening on the front side and both side surfaces on the airbag door side for accommodating the airbag and that the front opening edge abuts against the back surface of the airbag door. And a container disposed so that the two side openings are respectively aligned with the air conditioning unit side duct opening and the vent grill side duct opening, and provided between the container and the back surface of the airbag door. A vent duct structure for a vehicle, wherein a duct on an air conditioning unit side and a duct on a vent grill side communicate with each other through a gap provided. 2. A vehicle vent duct structure for guiding air from an air conditioning unit of a vehicle having a passenger seat airbag to an inside of an instrument panel to a vent grill on a passenger seat side, wherein a passenger seat side of the instrument panel is provided. An airbag door provided to be openable and closable on the airbag; a housing for housing the airbag; and an air conditioning unit side duct opening and a vent grill side duct opening located between the housing and the airbag door. A vent duct structure for a vehicle, comprising: a partition body for partitioning between them and being detachably disposed.