JP2002362275A - Mounting structure of tubular communication part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a tubular communication part capable of increasing the freedom degree of shape and design of a vehicle interior trim member. SOLUTION: A support piece part 45 extending along the outer edges of an air bag door 22 is projectedly installed on the rear surface of the vehicle interior tirm member 20. A first connection part 46 is provided in the support piece part 45 at a specified position. A second connection part 47 engageable with the first connection part 46 is provided in the body part 33 of the tubular communication part 31 lockingly held by an air bag device. Thus the opening part end edge of a body part 33 is allowed to abut on the rear surface outer edge of the air bag door 22, and the second connection part 47 is engaged with the first connection part 46 to install the tubular communication part 31 on the support piece part 45.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a tubular communication portion, and more particularly, to an airbag device installed inside a vehicle interior member and an airbag door provided on the vehicle interior member. The present invention relates to a mounting structure of a tubular communication portion that communicates with an outer peripheral portion of a back surface.

[0002]

2. Description of the Related Art In recent years, most passenger cars are equipped with an airbag device for a driver's seat and an airbag device for a passenger's seat as standard in order to protect an occupant from an impact due to a collision or the like. . Among them, the airbag device for the passenger seat is, for example, as shown in FIGS.
4 is fixed to a reinforcement bar 15 and the like disposed in front of the passenger compartment 4 and is housed in a passenger seat side of an instrument panel 20 as a vehicle interior member assembled in front of the passenger compartment 14. . For this reason, an airbag door 22 that opens and displaces toward the occupant compartment 14 is integrated with a panel base 21 that constitutes the instrument panel 20 at a position corresponding to the opening of the inflator 11 in the airbag device 10. When the door 22 is opened from the panel base material 21, the door 22 defines an airbag insertion opening that allows the airbag to pass through. When the airbag door 22 receives the pressing force of the airbag on its back surface, the central and outer edges of the panel substrate 21 that are to be cleaved, respectively, are fractured, so that the substrate 21 Opening from is allowed.

Further, since the panel base member 21 which integrally forms the airbag door 22 is a molded material made of a synthetic resin made of a material such as polypropylene, the instantaneous operation of the airbag is performed especially at low temperatures. If a strong pressing force is applied, the airbag door 22 and the surrounding area of the door 22 may be greatly damaged by the strong impact force. For this reason, for example, a door support member 30 is provided in a peripheral portion of the panel substrate 21 on the back side of the airbag door 22 in order to prevent breakage and scattering of the panel substrate 21 and the airbag door 22. Measures have been taken to increase strength. The door support member 30 is formed as a separate member from the panel base member 21 and is a double-door type airbag door 22 having two door panel portions 23 and 24.
In the case of FIG. 11, as shown in FIG. 11, a metal cylindrical tubular communication portion 31 fixed to surround the outer edge of the airbag door 22 and an inside of an opening of the cylindrical communication portion 31 are provided. And metal door reinforcing portions 32, 32 which are provided and fixed to the back surfaces of the door panel portions 23, 24, respectively.

[0004] The tubular communication portion 31 of the door support member 30 is provided with the inflator 1 of the airbag device 10.
1 and a main body part 3
3 and a flange-shaped engaging plate portion 34 which is integrally formed with the panel substrate 21 and is caulked to the back side of the panel base material 21.
As shown in FIG. 2, the engaging plate portion 34 is attached to the airbag door 2.
When the door panel portions 23 and 24 which receive the pressing force of the airbag are opened by tightly fixing the main body portion 33 to the inflator 11 of the airbag device 10 and firmly fixing the main body portion 33 to the peripheral portion of the rear surface of the airbag device 2, It functions to prevent the lifting of the peripheral part and other damages caused by this. On the other hand, the door reinforcing portions 32, 32 are connected to the cylindrical communication portion 31.
And a fixed support panel 35 which is welded or screwed to the body 33 of the fixed support panel 3, and the fixed support panel 3
5 and a movable reinforcing panel 36 which is caulked to the back surfaces of the corresponding door panel portions 23 and 24,
It functions to prevent the door panels 23, 24, which are opened and displaced by the pressing force of the airbag, from being damaged and from being scattered.

[0005]

Here, the cylindrical communication portion 31 of the door support member 30 substantially matches the horizontal dimension W and the vertical dimension H of the airbag door 22, as described above and shown in FIG. It has the flange-shaped engaging plate portion 34 extending from the upper end edge of the main body portion 33 to the front and rear and the left and right sides by an extension dimension S, respectively. Therefore, the cylindrical communication portion 31
Of the instrument panel 2 is considerably larger than the area in which the airbag door 22 is formed.
The problem inherently imposes a great restriction on the shape and design of the "0". That is, in the cylindrical communicating portion 31 formed by bending a metal plate material, due to molding restrictions, etc.,
The fastening plate portion 34 of the tubular communication portion 31 has to be formed in a substantially flat surface shape. Therefore, the airbag door 22 in the panel base material 21 and its peripheral portion also need to be formed in a flat shape. Therefore, it is impossible for the instrument panel 20 to make the airbag door 22 and the surrounding area into a round shape or an inclined shape with various changes.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems suitably, and the attachment of the tubular communication portion by eliminating the fastening plate portion of the cylindrical communication portion constituting the door support member. It is an object of the present invention to provide a mounting structure of a cylindrical communication portion that can improve the degree of freedom in the shape and design of a vehicle interior member by reducing the area.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems and achieve the intended object, the present invention provides an airbag device installed inside a vehicle interior member, and an airbag device provided in the vehicle interior member. A mounting structure of a tubular communication portion that communicates with an outer edge portion of a back surface of a bag door, wherein the support piece portion protrudes from a rear surface of the vehicle interior member and extends along an outer edge of the airbag door; A first connecting portion provided at a required position of the supporting piece portion, and a second connecting portion provided on the main body of the tubular communication portion and capable of engaging with the first connecting portion; Part edge is brought into contact with the back side outer edge of the airbag door,
By engaging the second connecting portion with the first connecting portion,
The tubular communication portion is attached to the support piece.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a mounting structure of a tubular communication portion according to the present invention. In each of the embodiments, the instrument panel 20 shown in FIG. 11 and FIG.
Assuming a door support member for a double-opening type airbag door 22 consisting of 3, 24, a description will be given of a mounting structure of a cylindrical communication portion constituting the door support member. Therefore, the same members as those already described in the section of the prior art are denoted by the same reference numerals.

[0009]

FIG. 1 is a cross-sectional side view showing an instrument panel 20 in which a tubular communication portion mounting structure according to a first embodiment is implemented at a portion where an airbag door 22 is formed.
FIG. 2 shows the mounting structure of the tubular communication portion in the first embodiment in a state in which the door support member 40 is attached to the outer peripheral portion of the back surface of the airbag door 22 formed on the panel base 21 constituting the instrument panel 20. FIG.

The door supporting member 40 in the first embodiment is
Basically, similarly to the conventional door support member 30 shown in FIG. 11, a metal cylindrical and tubular communication part 31 fixed to surround the outer edge of the airbag door 22 is provided. Metal door reinforcing portions 32, 32 are provided inside the opening of the cylindrical communication portion 31 and fixed to the back surfaces of the door panel portions 23, 24, respectively. In the door support member 40 of the embodiment, as shown in FIG. 2, each of the door reinforcing portions 32 is the same as the conventional one, and the form of the tubular communication portion 31 is changed. That is, the tubular communication portion 31 is configured such that the attachment plate portion 34 for fixing to the panel base material 21 is eliminated, and basically, only the main body portion 33 is configured.

The main body portion 33 of the cylindrical communication portion 31 is locked and supported by the inflator 11 of the airbag device 10, and the fixed support panels 35 of the door reinforcing portions 32 are tightly attached to the inner surface. First cylindrical body 4 to be joined
1 and the first cylindrical body 41 at appropriate intervals.
And a second cylindrical body 42 surrounding the outer periphery of the inner cylinder. The second cylindrical body 42 has a width approximately half the width of the first cylindrical body 41, and is attached to an outer intermediate portion of the first cylindrical body 41 by a mounting piece 42a formed along one end edge thereof. They are joined by welding or the like. As a result, the opening edge of the main body 33 that comes into contact with the outer edge of the back surface of the airbag door 22 has a housing defined between the first cylindrical body 41 and the second cylindrical body 42. The space 43 is open. That is, the cylindrical communication portion 31 is
When attached to the back surface of the panel substrate 21, only the opening edge of the main body 33 (the edge of the first cylindrical body 41 and the second cylindrical body 42) comes into contact with the outer edge of the back surface of the airbag door 22. (Figure 1). The second cylindrical body 42 has a plurality of engaging claws 49 forming a second connecting portion 47 described later.

The mounting structure of the tubular communication portion according to the first embodiment on the premise of the tubular communication portion 31 having the above-described structure is the back surface of the panel base 21 in the instrument panel 20 as a vehicle interior member. A support piece 45 protruding from the airbag door 22 and extending along the outer edge of the airbag door 22; a first connecting portion 46 provided at a required position of the support piece 45;
A second connecting portion 47 is provided on a wall surface of the main body portion 33 of the tubular communication portion 31 and can be engaged with the first connecting portion 46.

The support piece 45 is provided along the outer edge of the airbag door 22 so as to entirely surround the door 22 and extends toward the airbag device 10. It is formed integrally with the panel substrate 21 when the panel substrate 21 is molded. And this locking piece part 45 is accommodated in the accommodation space 4 defined in the cylindrical communication part 31.
3, so that the cylindrical communication portion 31 is positioned with respect to the airbag door 22.

The first connecting portion 46 of the embodiment is formed by a plurality of rectangular engaging holes 48 formed at required intervals in the circumferential direction of the support piece 45 in the support piece 45. I have. Each of the engagement holes 48 is opened at the same time when the support piece 45 is formed, that is, when the panel base material 21 is formed.

The second connecting portion 47 is, as described above,
In the second cylindrical body 42 constituting the main body 33 of the cylindrical communication part 31, a plurality of engaging claws 49 are formed at required intervals in the circumferential direction of the second cylindrical body 42. Each of the engaging claws 49 is formed by making a U-shaped cut into the wall of the second cylindrical body 42 and bending and deforming it in an inclined manner toward the accommodation space 43. It is provided at a position corresponding to the engagement hole 48.

In the mounting structure of the tubular communication portion according to the first embodiment thus constructed, as shown in FIGS. 2 and 3, the cylindrical communication portion 31 is connected to the edge of the support piece 45. Then, the cylindrical communication portion 31 is pushed toward the panel base material 21 under this condition so that the support piece portion 45 protrudes into and engages with the accommodation space 43. At this time, each of the engagement claws 49 is elastically deformed so as to be pressed by the support piece portion 45 and retracted from the accommodation space 43. However, when the tubular communication portion 31 is completely pushed in, the engagement claw portions 49 are engaged. Hole 48
Arrives, the pressure is released, the inclined state returns to its original state, and the engaging hole 48 protrudes (FIG. 4).

The main body 33 is connected to the support piece 4 by the engagement of each of the engagement claws 49 with each of the engagement holes 48.
5, the cylindrical communication portion 31 can be attached to the outer edge of the airbag door 22 inseparably. The movable reinforcing panel 36 in each of the door reinforcing portions 32, 32 is formed by fitting a rib 27 projecting from the back surface of the corresponding door panel portion 23, 24 into an engaging hole 38 formed therein. The ribs 27 are caulked to the corresponding door panel portions 23 and 24 by caulking.

In the mounting structure of the tubular communication portion according to the first embodiment, the outer edge portion of the airbag door 22 comes into contact with the outer edge portion of the opening portion of the main body portion 33 along the outer edge of the door 22. (The edges of the first cylindrical body 41 and the second cylindrical body 42), the mounting area of the cylindrical communicating portion 31 in the door support member 40 is the horizontal dimension W and the vertical dimension H of the airbag door 22.
Approximately matches. As a result, the attachment area of the tubular communication portion 31 and the formation area of the airbag door 22 are substantially the same, and therefore, as shown in FIG. The round
(Curved surface), an inclined shape, and the like can be obtained, and the degree of freedom in the shape and design of the instrument panel 20 can be increased.

[0019]

Second Embodiment FIG. 5 shows a mounting structure of a tubular communication portion according to a second embodiment in which an airbag door 22 formed on a panel base 21 constituting an instrument panel 20 is supported by a door at a rear edge portion thereof. FIG. 4 is an explanatory perspective view showing a state in which a member 40 is mounted. In the second embodiment, as compared with the first embodiment, the first connecting portion 46 provided at a required position of the support piece portion 45 and the wall surface of the main body portion 33 of the tubular communication portion 31 are provided. Further, the form of engagement with the second connecting portion 47 is changed. Therefore, only the parts that are different from the first embodiment will be described, and the parts that have not been changed will be indicated by the same reference numerals, and detailed description will be omitted.

The first connecting portion 46 of the second embodiment projects in a hook shape from the outer wall surface of the support piece 45, and a plurality of engagements formed at required intervals in the circumferential direction of the support piece 45. Protrusion 5
0. Each of the engaging projections 50 is formed at the same time when the support piece 45 is formed, that is, when the panel base material 21 is formed, and an inclined surface 50a that faces the mounting side of the tubular communication portion 31; Locking surface 50 facing away from the mounting side
b.

The second connecting portion 47 is connected to the cylindrical communicating portion 3.
In the second cylindrical body 42 constituting the first main body 33,
A plurality of rectangular engaging holes 51 are formed at predetermined intervals in the circumferential direction of the second cylindrical body 42. Each engagement hole 51
Are provided at positions corresponding to the engagement protrusions 50 protruding from the support piece 45.

In the tubular communication part mounting structure according to the second embodiment having the above-described structure, as shown in FIGS. 5 and 6, the cylindrical communication part 31 is connected to the edge of the support piece 45. Then, the cylindrical communication portion 31 is pushed toward the panel base material 21 under this condition so that the support piece portion 45 protrudes into and engages with the accommodation space 43. At this time, since each of the engaging projections 50 comes into contact with the second cylindrical body 42, the support piece 45 slightly elastically deforms toward the airbag door 22, but the door support member 40 is completely When pushed in, the engagement projection 50 projects into the engagement hole 51, and the locking surface 50b engages with the inner end edge of the engagement hole 51 (FIG. 7).

The main body 33 is connected to the support piece 4 by the engagement between the engagement projections 50 and the engagement holes 51.
5, the cylindrical communication portion 31 can be attached to the outer edge of the airbag door 22 inseparably. As in the first embodiment, the movable reinforcing panel 36 in each of the door reinforcing portions 32, 32 has ribs projecting from the back surfaces of the door panel portions 23, 24 corresponding to the engaging holes 38 formed therein. After fitting, the ribs 27 are caulked to the corresponding door panel portions 23 and 24 by heat caulking.

In the tubular communication portion mounting structure according to the second embodiment, the outer edge portion of the airbag door 22 comes into contact with the outer edge portion of the main body portion 33 along the outer edge of the door 22 (see FIG. 2). (The edges of the first cylindrical body 41 and the second cylindrical body 42), the mounting area of the cylindrical communicating portion 31 in the door support member 40 is the horizontal dimension W and the vertical dimension H of the airbag door 22.
Approximately matches. As a result, the attachment area of the tubular communication portion 31 and the formation area of the airbag door 22 are substantially the same, and therefore, as shown in FIG. The round
(Curved surface), an inclined shape, and the like can be obtained, and the degree of freedom in the shape and design of the instrument panel 20 can be increased.

[0025]

Third Embodiment FIG. 8 shows a mounting structure of a tubular communication portion according to a third embodiment in which a door support is provided at an outer edge portion of a back surface of an airbag door 22 formed on a panel substrate 21 constituting an instrument panel 20. FIG. 4 is an explanatory perspective view showing a state in which a member 40 is mounted. The door support member 40 in the third embodiment is basically made of metal and fixed to surround the outer edge of the airbag door 22, similarly to the conventional door support member 30 shown in FIG. And a metal door reinforcing portion 32, 32 provided inside the opening of the cylindrical communication portion 31 and fixed to the back surfaces of the door panel portions 23, 24, respectively. It is configured. And the third
In the door support member 40 of the embodiment, each door reinforcing portion 32,3
No. 2 has no change from the prior art, and the anchoring plate portion 34 in the tubular communication portion 31 is abolished, and the tubular communication portion 31 is basically composed of only the main body portion 33.

The main body portion 33 of the cylindrical communication portion 31 is locked and supported by the inflator 11 of the airbag device 10 and the fixed support panel 3 of each of the door reinforcing portions 32 is provided.
5 has a single-layer structure including a cylindrical body 55 that comes into close contact with the inner surface. Thus, when the tubular communication portion 31 is attached to the back surface of the panel base member 21, only the opening edge of the main body portion 33 (the edge of the cylindrical body 55) is attached to the airbag door 22.
To come into contact with the outer peripheral portion of the back surface. The cylinder 5
5, a plurality of engaging claws 59 forming a second connecting portion 47 to be described later are formed.

The mounting structure of the cylindrical communication portion according to the third embodiment on the premise of the door support member 40 configured as described above is as follows.
The instrument panel 20 as a vehicle interior member
A support piece 56 projecting from the back surface of the panel base material 21 and extending along the outer edge of the airbag door 22;
A first connecting portion 46 provided at a required position of the support piece portion 56
And a second connecting portion 47 provided on a wall surface of the main body portion 33 of the tubular communication portion 31 and capable of engaging with the first connecting portion 46.

The support piece 56 is formed along the left and right edges of the door 22 with respect to the opening direction of the airbag door 22 and extends toward the airbag device 10. And is formed integrally with the panel base material 21 when the panel base material 21 is formed. These locking pieces 56, 56 are set to be adjacent to the left and right side surfaces of the cylindrical body 55 in the cylindrical communication portion 31,
By aligning the cylindrical body 55 between the support pieces 56, 56, the positioning of the cylindrical communication portion 31 with respect to the airbag door 22 is achieved. In addition, a reinforcing rib 57 is formed integrally with each support piece 56.

Then, the first connecting portion 46 of the third embodiment.
Are a plurality (three in this embodiment) of engagement holes 58 formed at required intervals on the support pieces 56, 56. Each engagement hole 58 is opened at the same time when the support piece 56 is formed, that is, when the panel base material 21 is formed. On the other hand, the second connecting portion 47 is formed as a plurality of engaging claws 59 extending left and right outward from the edge of the opening of the cylindrical body 55 forming the main body 33 of the cylindrical communicating portion 31. I have. Each of the engaging claws 59 is formed integrally with the edge of the opening of the cylindrical body 55 and bent outwardly at a substantially right angle to form a flat L-shape. It is provided at a position corresponding to the hole 58.

In the mounting structure of the cylindrical communication portion according to the third embodiment configured as described above, as shown in FIGS. 8 and 9A, for example, each of the cylindrical communication portions 31 provided on the left side is provided. Each engaging hole 5 in which an engaging claw portion 59 is provided in one support piece portion 56
8 from the side, and then into the cylindrical communication portion 3
After each engaging claw portion 59 provided on the right side of 1 is fitted into each engaging hole 58 provided in the other support piece portion 56 from the side, as shown in FIG. The tubular communication portion 31 is attached and fixed by sliding the cylindrical communication portion 31 downward in the drawing. Therefore, the main body 33 is attached to the support pieces 56 by the engagement of the engagement claws 59 with the engagement holes 58, whereby the door support member 40 is provided.
Can be inseparably locked and fixed to the outer edge of the airbag door 22.

In the mounting structure of the tubular communication portion according to the third embodiment, the outer edge portion of the airbag door 22 comes into contact with the outer edge portion of the opening portion of the main body 33 along the outer edge of the door 22. (The edge of the cylindrical body 55), so that the door support member 40
The mounting area of the cylindrical communication portion 31 in FIG. 1 substantially matches the horizontal dimension W and the vertical dimension H of the airbag door 22. As a result, the attachment area of the door support member 40 and the formation area of the airbag door 22 are substantially the same, and as shown in FIG.
The outer edge portion adjacent to the instrument panel can be formed into a round (curved surface) shape, an inclined shape, or the like.
The degree of freedom of the shape and design of the can be increased. Further, the cylindrical communication portion 31 of the door support member 40 in the third embodiment is different from the one shown in FIG.
As compared with the conventional tubular communication portion 31 shown in FIG. 1, the weight can be reduced corresponding to the weight of the engaging plate portion 34, and the tubular communication portion 31 of the first and second embodiments described above can be used. By comparison, a weight reduction corresponding to the weight of the second cylindrical body 42 is possible.

In the third embodiment, the engaging claw 59 provided on the cylindrical communication portion 31 is L-shaped.
Is not limited to this shape, and may be, for example, a T-shape as shown in FIG. Even when the engaging claw portion 59 is formed in such a T-shape, the engaging hole 58 provided in the support piece portion 56 is provided.
And the engagement claw portion 59 is appropriately engaged.

In the first embodiment and the second embodiment, the support piece 45 for mounting the tubular communication portion 31 is provided along the outer peripheral edge of the airbag door 22.
2 is formed so as to surround the entirety,
This support piece 45 is the support piece 5 shown in the third embodiment.
6, 56, the airbag door 22 may extend along the left and right edges of the door 22 in the opening direction of the door 22. In addition, the airbag door 22 may extend along the front edge and the rear edge of the door 22 in the opening direction. On the other hand, the support pieces 56 in the third embodiment may be formed along the outer peripheral edge of the airbag door 22 so as to entirely surround the door 22.

The vehicle interior member having the airbag door includes a door panel portion and a pillar garnish in addition to the instrument panel 20. The mounting structure of the tubular communication portion according to the present invention is based on the vehicle interior member. The present invention can be suitably applied to an airbag door provided on a member.

Further, the mounting structure of the tubular communication portion of the present invention is not limited to the double-opening type airbag door exemplified in the above embodiment, but can be suitably applied to, for example, a single-opening type airbag door. is there.

[0036]

As described above, according to the mounting structure of the tubular communication portion according to the present invention, the outer edge portion of the airbag door comes into contact with the outer edge portion of the opening portion of the cylindrical portion along the outer edge of the door. Since only the edge is provided, the mounting area of the tubular communication portion substantially coincides with the formation area of the airbag door. This allows
The outer edge portion of the vehicle interior member adjacent to the airbag door can be formed into a round shape, an inclined shape, or the like, which has a beneficial effect of increasing the degree of freedom in the shape and design of the vehicle interior member. When the first connection portion provided on the support piece portion and the second connection portion provided on the main body portion are engaged with each other with the support piece portion provided at the back outer peripheral portion of the airbag door, both connection portions are provided. The main body can be attached to the support piece by the engagement of the support member, whereby the cylindrical communication portion can be easily and easily locked and fixed to the outer edge of the rear surface of the airbag door. The first connection portion and the second connection portion may adopt an engagement form between the engagement hole and the engagement claw, an engagement form between the engagement protrusion and the engagement hole, and the like.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view showing an instrument panel in which a tubular communication portion mounting structure according to a first embodiment is implemented, which is cut away at a portion where an airbag door is formed.

FIG. 2 is a perspective view showing a mounting structure of a cylindrical communication portion according to the first embodiment, and a door support member is mounted on an outer edge portion of a back surface of an airbag door formed on a panel base material constituting an instrument panel. The state is shown.

FIG. 3 is a cross-sectional view cut along the line III-III in FIG. 2 and shows a state where a tubular communication portion is attached to a support piece provided on the panel base material.

FIG. 4 is a cross-sectional view cut along the line III-III in FIG. 2 and shows a state in which a tubular communication portion is attached to a support piece provided on the panel base material.

FIG. 5 is a perspective view showing a mounting structure of a tubular communication portion according to a second embodiment, in which a door support member is attached to an outer edge portion of a back surface of an airbag door formed on a panel base material constituting an instrument panel. The state is shown.

6 is a cross-sectional view cut along line VI-VI of FIG. 5, showing a state where a tubular communication portion is attached to a support piece provided on the panel base material.

FIG. 7 is a cross-sectional view taken along line VI-VI of FIG. 5 and shows a state where a tubular communication portion is attached to a support piece provided on the panel base material.

FIG. 8 is a perspective view showing a mounting structure of a tubular communication portion according to a third embodiment, in which a door support member is mounted on an outer edge portion of a back surface of an airbag door formed on a panel base material constituting an instrument panel. The state is shown.

FIG. 9 is an explanatory view showing a process of engaging an engagement claw provided on a door support member with an engagement hole provided in a support piece, and FIG. FIG. 3B shows a state where the cylindrical communication portion is slid and the respective engagement claws are locked in the corresponding engagement holes. FIG.

FIG. 10 is a perspective view showing a modified example of the mounting structure of the cylindrical communication portion according to the third embodiment, in which the shape of an engagement claw provided on the cylindrical communication portion is changed.

FIG. 11 is a partial perspective view showing an instrument panel in which a conventional tubular communication portion mounting structure is implemented, with a panel base material partially cut away.

FIG. 12 is a sectional view taken along line XX of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Airbag apparatus 20 Instrument panel (vehicle interior member) 22 Airbag door 31 Cylindrical communication part 33 Main body part 45 Support piece part 46 First connection part 47 Second connection part 48 Engagement hole 49 Engagement claw part 50 Collision part 51 Engagement hole 56 Support piece part 58 Engagement hole 59 Engagement claw part

Claims (6)

[Claims] 1. A cylinder for communicating an airbag device (10) installed inside a vehicle interior member (20) with an outer peripheral portion of a back surface of an airbag door (22) provided on the vehicle interior member (20). Communication part
The mounting structure of (31), wherein the support piece (45/56) protruding from a back surface of the vehicle interior member (20) and extending along an outer edge of the airbag door (22).
And a first connecting portion (4) provided at a required position of the support piece (45/56).
6), provided on the main body portion (33) of the tubular communication portion (31),
A second connecting portion (47) that can be engaged with the connecting portion (46), and the opening edge of the main body (33) is connected to the airbag door (22).
Abuts against the outer edge of the rear surface of the
An attachment structure for a cylindrical communication portion, wherein the cylindrical communication portion (31) is attached to the support piece (45/56) by engaging with the connecting portion (46). 2. The first connecting portion (46) is connected to the support piece (45).
The second connecting portion (47) is an engaging claw (49) formed on the wall surface of the main body (33), and the second connecting portion (47) is formed with the engaging hole (48). The main body portion is engaged by engagement with the engagement claw portion (49).
2. A mounting structure for a tubular communication part according to claim 1, wherein (33) is mounted on said support piece part (45). 3. The first connecting portion (46) is connected to the support piece (45).
The second connecting portion (47) is an engaging hole (51) formed in a wall surface of the main body (33), and the second connecting portion (47) is an engaging protrusion (50) formed on the wall of the main body (33). The main body part by the engagement of
2. A mounting structure for a tubular communication part according to claim 1, wherein (33) is mounted on said support piece part (45). 4. The first connecting portion (46) is connected to the support piece (56).
The second connecting portion (47) is formed with an engaging claw (5) extending outward from the opening end of the main body (33).
The cylindrical communication according to claim 1, wherein the main body (33) is attached to the support piece (56) by engagement of the engagement hole (58) with the engagement claw (59). Mounting structure. 5. The airbag according to claim 1, wherein said support piece is formed so as to entirely surround said airbag door along an outer peripheral edge of said door. The mounting structure of the cylindrical communication part according to any one of the above. 6. The airbag door (22), wherein the support piece (45/56) extends along a side edge of the airbag door (22) in the opening direction of the door (22). The mounting structure of the cylindrical communication part according to any one of the above.