JP7748249B2 - Support member assembly structure - Google Patents

Description

The present invention relates to a support member assembly structure. More specifically, it relates to a support member assembly structure for attaching a support member for mounting interior components provided on the roof side of a vehicle to the roof side rail of the vehicle.

Patent Document 1 discloses a structure in which a bracket for fixing an inflator of a curtain airbag device and a support member for attaching a grab handle are integrated with an assembly bolt, thereby attaching the curtain airbag device to a roof side rail and simultaneously positioning the support member in the vehicle.
Patent Document 2 discloses a bracket that is integrated with a pair of component mounting seats for mounting a grab rail (grab handle) and a bag mounting seat for mounting a fixing portion of an airbag device between the component mounting seats.

U.S. Patent No. 8,439,392 JP 2008-302889 A

In the case of the structure described in Patent Document 1, the bracket that secures the inflator of the curtain airbag device and the support member that attaches the grab handle are integrated with an assembly bolt, so the position of the inflator and the position of the grab handle must be aligned. However, this structure cannot be applied if the positions of the inflator and the grab handle are designed separately, and it can be said that this structure has a low degree of freedom in design.

In the structure described in Patent Document 2, the bracket is attached to the vehicle at only two vehicle mounting seats, located on both ends of the bracket. Therefore, when the airbag inflates and deploys, the force of the airbag pulls the bag mounting seat toward the interior of the vehicle, deforming the bracket and potentially causing the airbag to deploy in an undesired position. Furthermore, because the bag mounting seat is located away from the roof side rail, deformation of the lateral extension may occur when attaching the airbag to the bag mounting seat, causing the component mounting seat to shift from its intended position, potentially making it impossible to attach the grab rail to the component mounting seat. Furthermore, even when the curtain airbag device and bracket are attached to the vehicle in a pre-assembled state, the weight of the curtain airbag device may also cause the bracket to deform.

The present invention was made in consideration of the above-mentioned problems, and aims to provide a support member assembly structure that allows a support member to be attached to a vehicle and suppresses deformation of the support member used to attach interior parts.

In order to solve the above-mentioned problems and achieve the object, one aspect of the present invention is a support member assembly structure comprising at least two support members attached to a roof side rail of a vehicle, the support member assembly structure comprising a first support member and a second support member, each of which has a pair of fixing portions arranged side by side in the longitudinal direction of the roof side rail and fixed to the roof side rail, and a mounting portion that protrudes from the fixing portions toward the inside of the vehicle and to which the interior part is attached; and a connecting member that connects the adjacent fixing portions of the two support members, wherein the connecting member is integrally formed with a reinforcing portion that connects the pair of fixing portions of at least one of the first support member or the second support member.

The support member assembly structure of the present invention allows the support member to be attached to the vehicle and also suppresses deformation of the support member used to attach interior parts.

FIG. 1 is a front view schematically showing an example of a support member assembly structure. FIG. 2 is a rear view schematically showing an example of a support member assembly structure. FIG. 3A is a perspective view schematically illustrating an example of a support member. FIG. 3B is a perspective view schematically illustrating an example of the support member. FIG. 4 is a perspective view schematically illustrating an example of a connecting member. FIG. 5 is a perspective view that schematically shows an example of an inflator bracket that constitutes a curtain airbag device. FIG. 6A is a perspective view schematically illustrating an example of a clip. FIG. 6B is a perspective view schematically showing a state in which the clip is fitted into the fitting hole of the connecting member. FIG. 7A is a front view schematically showing a state in which an inflator is fixed to an inflator bracket. FIG. 7B is a cross-sectional view taken along line AA of FIG. 7A. FIG. 8 is a front view showing a schematic view of the support member assembly structure assembled to the roof side rail. FIG. 9 is an enlarged view schematically showing the state in which the support member assembly structure is assembled to the roof side rail, and is an enlarged view of the part surrounded by the square B in FIG. FIG. 10 is a front view schematically showing another example of the support member assembly structure. FIG. 11 is a rear view schematically showing another example of the support member assembly structure. FIG. 12 is a front view schematically showing another example of the support member assembly structure. FIG. 13 is a rear view schematically showing another example of the support member assembly structure.

Hereinafter, an embodiment of a support member assembly structure of the present invention will be described with reference to the drawings.
In each drawing, the arrow FR indicates the front of the vehicle, and the arrow RE indicates the rear of the vehicle. The direction of the double arrow FR-RE is the longitudinal direction of the vehicle.
The arrow IN indicates the inside in the vehicle width direction.

(First embodiment)
The support member assembly structure of the first embodiment is configured such that a pair of fixing portions of the first support member are connected by a first reinforcing portion integrally formed on the connecting member, and a pair of fixing portions of the second support member are connected by a second reinforcing portion integrally formed on the inflator bracket.

FIG. 1 is a front view schematically showing an example of a support member assembly structure.
FIG. 2 is a rear view schematically showing an example of a support member assembly structure.
The support member assembly structure 1 shown in Figures 1 and 2 is a structure for attaching at least two support members to a roof side rail of a vehicle, and includes a first support member 10 and a second support member 20 as the at least two support members.
The first support member 10 and the second support member 20 are members to which interior parts of the vehicle are attached.

The support member assembly structure 1 further includes a connecting member 30 and a curtain airbag device 40 .
1 and 2 show an inflator bracket 50 which is a part of the curtain airbag device 40.
The first support member 10 and the second support member 20 are joined to the connecting member 30 by spot welding. Furthermore, the second support member 20 and the connecting member 30 are joined to the inflator bracket 50 by spot welding. Therefore, the first support member 10, the second support member 20, the connecting member 30, and the inflator bracket 50 have an integrated structure when not attached to the vehicle.
Furthermore, the method of joining the first support member 10, the second support member 20, the connecting member 30, and the inflator bracket 50 is not limited to spot welding, and other methods may be used. For example, methods such as thermal caulking may be used.

The first support member 10 and the second support member 20 are aligned in the longitudinal direction of the vehicle (the direction of the double arrows RE-FR in FIG. 1). The rear side of the vehicle is the first support member, and the front side of the vehicle is the second support member.
In this specification, when there is no need to distinguish between the first support member and the second support member, they are simply referred to as support members.
An interior part of the vehicle is attached to the support member, such as a grab handle (assist grip).
The same interior part may be attached to the first support member 10 and the second support member 20, or different interior parts may be attached to the first support member 10 and the second support member 20. If the interior part is a grab handle (assist grip), the first support member 10 and the second support member 20 will have the same interior part attached to them.

The curtain airbag device 40 is a device that includes an inflator bracket 50 and other components (such as an inflator and a curtain airbag) that are not shown in FIGS. 1 and 2 .
In the support member assembly structure of the present invention, the curtain airbag device is attached to the second end of the connecting member and the second support member.
The following describes a configuration in which the inflator bracket 50 of the curtain airbag device 40 is attached to the connecting member 30, but in the support member assembly structure of the present invention, the location where the curtain airbag device is attached to the connecting member is not limited to the inflator bracket, and a configuration in which a member other than the inflator bracket, such as a bracket for attaching the curtain airbag to a roof side rail, among the members that make up the curtain airbag device, is attached to the connecting member may also be used.

First, the structures of the first and second support members as components that constitute the support member assembly structure will be described with reference to the drawings.
3A and 3B are perspective views schematically illustrating an example of a support member. Fig. 3A shows a first support member 10, and Fig. 3B shows a second support member 20. Since the first support member 10 and the second support member 20 can basically be of the same specifications, the first support member 10 shown in Fig. 3A and the second support member shown in Fig. 3B differ only in reference numeral.

The first support member 10 has a mounting portion 15 to which an interior part is attached, and a pair of fixing portions, a first fixing portion 11 and a second fixing portion 12, that fix the first support member 10 to a roof side rail. The first fixing portion 11 and the second fixing portion 12 are aligned in the longitudinal direction of the vehicle, with the first fixing portion 11 on the rear side of the vehicle and the second fixing portion 12 on the front side of the vehicle.
The first fixing portion 11 and the second fixing portion 12 are flat plate-like portions each having a through hole 11a and a through hole 12a for bolting to the roof side rail. The flat plate has a surface that extends along the longitudinal direction of the vehicle.
The mounting portion 15 and the first fixed portion 11 are connected by a bent portion 16, and the mounting portion 15 and the second fixed portion 12 are connected by a bent portion 17. The bent portions 16 and 17 are portions formed by bending the metal member that constitutes the first support member 10, and the bent portion 16 and the first fixed portion 11 form a substantially L-shape, and the bent portion 17 and the second fixed portion 12 form a substantially L-shape.

The second support member 20 has a mounting portion 25 to which an interior part is attached, and a pair of fixing portions, a third fixing portion 23 and a fourth fixing portion 24, that fix the second support member 20 to the roof side rail. The third fixing portion 23 and the fourth fixing portion 24 are aligned in the longitudinal direction of the vehicle, with the third fixing portion 23 on the rear side of the vehicle and the fourth fixing portion 24 on the front side of the vehicle.
The third fixing portion 23 and the fourth fixing portion 24 are flat plate-like portions each having a through hole 23 a and a through hole 24 a for bolting to the roof side rail. The flat plate has a surface that extends along the longitudinal direction of the vehicle.
The mounting portion 25 and the third fixing portion 23 are connected by a bent portion 26, and the mounting portion 25 and the fourth fixing portion 24 are connected by a bent portion 27. The bent portion 26 and the bent portion 27 are portions formed by bending the metal member that constitutes the second support member 20, and the bent portion 26 and the third fixing portion 23 form a substantially L-shape, and the bent portion 27 and the fourth fixing portion 24 form a substantially L-shape.

Next, the structure of the connecting member as a component of the support member assembly structure will be described with reference to the drawings.
FIG. 4 is a perspective view schematically illustrating an example of a connecting member.
4 is a member that extends in the longitudinal direction of the vehicle, with the portion located on the rear side of the vehicle being a first end 31 and the portion located on the front side of the vehicle being a second end 32. The first end 31 and second end 32 of the connecting member 30 refer to areas near the ends of the vehicle in the longitudinal direction, and do not define specific ranges.

The first support member 10 is attached to the first end 31 of the connecting member 30. The first end 31 is provided with a through hole 31a and a through hole 31b.
In addition, a first reinforcing portion 35 is provided at the first end portion 31 to connect the pair of fixing portions of the first support member 10. The role of the first reinforcing portion 35 will be described later.

The third fixing portion 23 of the second support member 20 is attached to the second end 32 of the connecting member 30. Furthermore, the end 51 of the inflator bracket 50, which is part of the curtain airbag device 40, is attached to the second end 32 of the connecting member 30. A through hole 32a is provided in the second end 32.

Next, the structure of the support member assembly structure as a component of an inflator bracket provided in a curtain airbag device will be described with reference to the drawings.
FIG. 5 is a perspective view that schematically illustrates an example of an inflator bracket provided in a curtain airbag device.
The inflator bracket 50 has an end portion 51 disposed on the rear side of the vehicle, and the third fixing portion 23 of the second support member 20 is attached to the end portion 51 at the rearmost position of the vehicle. Furthermore, the second end portion 32 of the connecting member 30 is attached to the end portion 51. A through hole 51a is provided in the end portion 51 at the rearmost position of the vehicle.
The end 51 of the inflator bracket 50 means the area near the end located on the rear side of the vehicle, and does not define a specific range.

The fourth fixing portion 24 of the second support member 20 is attached to the end portion 51 of the inflator bracket 50 at a position that is closest to the front of the vehicle, i.e., at a position further forward of the position of the through hole 51a provided in the end portion 51 of the inflator bracket 50. A through hole 51b is provided at a position further forward of the position of the through hole 51a provided in the end portion 51.
Further, a second reinforcing portion 55 is provided at the end portion 51 of the inflator bracket, and connects the pair of fixing portions of the second support member 20. The role of the second reinforcing portion 55 will be described later.

An inflator fixing portion 52 is provided on the inflator bracket 50 at a position further forward in the vehicle than the end portion 51 of the inflator bracket 50. The inflator fixing portion 52 is a plate-shaped portion that protrudes inward in the vehicle width direction from the inflator bracket 50, and has an inflator fixing hole 52a and an inflator fixing hole 52b.
The manner in which the inflator is fixed to the inflator fixing portion will be described later.

The relationship between the first support member 10, second support member 20, connecting member 30, and inflator bracket 50 in the support member assembly structure 1 will be explained with reference to Figures 1 and 2.

The through hole 31a provided in the first end 31 of the connecting member 30 overlaps with the through hole 11a provided in the first fixed portion 11 of the first support member 10, and the through hole 31b provided in the first end 31 of the connecting member 30 overlaps with the through hole 12a provided in the second fixed portion 12 of the first support member 10.
These overlapping through holes allow the connecting member 30 to be bolted together with the first support member 10 to the roof side rail.
It is preferable that the joining of the connecting member 30 and the first support member 10 be achieved by spot welding the first end 31 of the connecting member 30 to the first fixing portion 11 and the second fixing portion 12 of the first support member 10, respectively.

The through hole 32a provided in the second end 32 of the connecting member 30 overlaps with the through hole 23a provided in the third fixing portion 23 of the second support member 20, and also overlaps with the through hole 51a provided in the end 51 of the inflator bracket 50.
These overlapping through holes allow the connecting member 30 to be bolted to the roof side rail together with the second support member 20 and the inflator bracket 50 .
The three members, the connecting member 30, the second support member 20, and the inflator bracket 50, overlap at the second end 32 of the connecting member 30. These three members are preferably joined by spot welding the second end 32 of the connecting member 30 to the end 51 of the inflator bracket 50 at the third fixing portion 23 of the second support member 20.

The through-hole 51 b provided in the end portion 51 of the inflator bracket 50 overlaps with the through-hole 24 a provided in the fourth fixing portion 24 of the second support member 20 .
These overlapping through holes allow the inflator bracket 50 to be bolted to the roof side rail together with the second support member 20 .
The inflator bracket 50 and the second support member 20 are preferably joined by spot welding the fourth fixing portion 24 of the second support member 20 to the end portion 51 of the inflator bracket 50 .
In other words, it can be said that the inflator bracket 50 is attached to both the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 .

In the support member assembly structure 1 having the above-described configuration, the pair of fixing portions of the first support member 10, the first fixing portion 11 and the second fixing portion 12, are connected by a first reinforcing portion 35 integrally formed on the connecting member 30.
1, 2, and 4, the portion of the connecting member 30 that connects the first fixing portion 11 and the second fixing portion 12 of the first support member 10 serves as the first reinforcing portion 35. The outline of the position of the first reinforcing portion 35 is indicated by hatching.
When a first reinforcing portion 35 is provided between the first fixing portion 11 and the second fixing portion 12 of the first support member 10, the distance between the first fixing portion 11 and the second fixing portion 12 of the first support member 10 is fixed by the first reinforcing portion 35, thereby suppressing deformation of the first support member 10.

In addition, in the support member assembly structure 1, the third fixing portion 23 and the fourth fixing portion 24, which are a pair of fixing portions of the second support member 20, are connected by a second reinforcing portion 55 formed integrally with the inflator bracket 50.
2, the portion of the inflator bracket 50 that connects the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 serves as the second reinforcing portion 55. In FIG. 2, the outline of the position of the second reinforcing portion 55 is indicated by hatching.
When a second reinforcing portion 55 is provided between the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20, the distance between the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 is fixed by the second reinforcing portion 55, thereby suppressing deformation of the second support member 20.

In other words, in the support member assembly structure of the first embodiment, the area between the first and second fixing portions, where the first support member is fixed to the roof side rail, is reinforced by the first reinforcing portion, and the area between the third and fourth fixing portions, where the second support member is fixed to the roof side rail, is reinforced by the second reinforcing portion. Because the areas where the first and second support members are fixed to the roof side rails are reinforced in this way, deformation of the first and second support members is suppressed when the airbag is inflated and deployed or when the airbag is assembled to the vehicle.

In the support member assembly structure of the present invention, the first support member, the second support member, the connecting member, and the curtain airbag device (inflator bracket) are separate components, and these components are combined to form the support member assembly structure.
In the support member assembly structure of the present invention, the plate thickness of the connecting member and the plate thickness of the support member may be different.
When different interior components are attached to a support member, the strength required of the support member differs, so the thickness of the plate material that makes up the support member needs to be changed. In this case, if the support member and connecting member are integrated, the thickness of the connecting member needs to be changed to match the change in the plate thickness of the support member. However, since the connecting member also has a required thickness for other reasons, it is not always possible to make the support member and connecting member the same thickness.
By preparing the support member and the connecting member as separate members and joining them later to form a support member assembly structure, a common connecting member can be used even if the specifications of the support members are different.

For the same reason, in the support member assembly structure of the present invention, the plate thickness of the inflator bracket and the plate thickness of the support member may be different.
In this way, the thicknesses of the support member, connecting member, and inflator bracket that make up the support member assembly structure can be made to be appropriate for each component, and therefore the support member assembly structure of the present invention can be said to be an advantageous structure compared to a support member assembly structure in which the support member, connecting member, and inflator bracket are integrally molded.

For example, it is preferable that the thickness of the support member be thicker or thinner than that of the connecting member, and it is also preferable that the thickness of the support member be thicker or thinner than that of the inflator bracket.
As a specific example of thickness, the plate thickness of the support member may be 1.0 to 2.0 mm, the plate thickness of the connecting member may be 1.2 to 2.0 mm, and the plate thickness of the inflator bracket may be 1.2 to 2.0 mm.
Furthermore, the support member, the connecting member, and the inflator bracket may have the same plate thickness.

The plate materials constituting the support member, the connecting member and the inflator bracket may be made of a material such as galvanized steel plate.
Furthermore, in order to reinforce the support member, the plate material constituting the connecting member and the inflator bracket may be made of a material stronger than the plate material constituting the support member, such as a cold-rolled steel plate.

In the support member assembly structure of the present invention, the connecting member may be provided with a fitting hole for fitting a clip attached to a roof side rail of a vehicle.
FIG. 6A is a perspective view that schematically shows an example of a clip, and FIG. 6B is a perspective view that schematically shows a state in which the clip is fitted into a fitting hole of a connecting member.
The clip 60 shown in FIG. 6A is cylindrical as a whole, and has a configuration in which annular plates 61 and 62 having notches are provided on both ends of a cylinder 63 .

6B , the connecting member 30 has a fitting hole 36. The fitting hole 36 is a hole formed by combining a large diameter hole 36a having a large diameter and a small diameter hole 36b having a small diameter, and the clip 60 can be fitted into the fitting hole 36 by inserting the clip 60 into the large diameter hole 36a and then shifting it toward the small diameter hole 36b.
The shapes of the fitting hole 36, the large diameter hole 36a, and the small diameter hole 36b without the clip 60 fitted therein are also shown in FIG.

When the clip 60 is fitted into the fitting hole 36 as described above, the distance between the annular plates 61 and 62 of the clip is set to be approximately the same as the thickness of the connecting member 30. Alternatively, the thickness of the connecting member 30 is set to be slightly smaller.
The gap between the annular plates 61 and 62 in the clip 60 must be set within a predetermined range in accordance with the specifications of the clip, so the thickness of the connecting member 30 is set to a thickness that matches the specifications of the clip 60.
In this case, since the connecting member 30 and the first and second support members 10 and 20 are made of separate members, the plate thickness of the first and second support members 10 and 20 can be determined as the plate thickness required for the support members, and the plate thickness of the connecting member 30 can be determined as a plate thickness that matches the specifications of the clip 60.

For example, the plate thickness of the connecting member that engages the clip can be 1.7 to 2.0 mm, and the plate thickness of the support member that supports the grab handle can be 1.0 to 2.0 mm.

The clip 60 is preferably made of resin, and the vehicle body is provided with a portion into which the clip can be fitted, so that the clip can be directly fitted into the vehicle body. By fitting the clip, the support member assembly structure can be temporarily fixed to the vehicle.
The clip can be used to fasten components to the roof side rail of the vehicle, such as drain hoses and harnesses for electronic components.

In the support member assembly structure of the present invention, the curtain airbag device preferably includes an inflator and an inflator bracket that secures the inflator, and the inflator bracket is attached to the second end of the connecting member and the second support member.

FIG. 7A is a front view that schematically shows a state in which an inflator is fixed to an inflator bracket, and FIG. 7B is a cross-sectional view taken along line AA of FIG. 7A.
As shown in FIG. 7A, an inflator 70 is placed on the inflator fixing portion 52 of the inflator bracket 50, and the inflator 70 is fixed to the inflator fixing portion 52 by inserting fixing pins into the inflator fixing holes 52a and 52b.
As shown in FIG. 7B, the inflator fixing portion 52 fixes the inflator 70 at a position protruding inward in the vehicle width direction (the direction of the arrow IN in FIG. 7A).
Although a cylindrical inflator is shown in FIGS. 7A and 7B, the shape of the inflator is not particularly limited.

The inflator and inflator bracket are rigid (high-strength) components. Therefore, when attaching the support member assembly structure to the roof side rail, if you hold the inflator and attach it from the inflator bracket, the workability of attaching the support member assembly structure can be improved.

FIG. 8 is a front view showing a schematic view of the support member assembly structure attached to the roof side rail.
8 shows the support member assembly structure 1 attached to a roof side rail 100. The inflator 70 is inserted into the airbag 80 at the front side of the vehicle.
The position where the support member assembly structure is attached to the roof side rail is not particularly limited, but FIG. 8 shows an embodiment where it is attached to the rear of a center pillar 90 on the rear seat side of the vehicle.

FIG. 9 is an enlarged view schematically showing the state in which the support member assembly structure is attached to the roof side rail, and is an enlarged view of the part surrounded by the square B in FIG.
In order to attach the support member assembly structure 1 to the roof side rail 100, bolts are fastened to the respective through holes provided in the support member assembly structure 1.
The through hole 11a provided in the first fixing portion 11 of the first support member 10 and the through hole 31a provided in the first end portion 31 of the connecting member overlap with each other and are fixed together with a bolt 81 .
The through hole 12a provided in the second fixing portion 12 of the first support member 10 and the through hole 31b provided in the first end portion 31 of the connecting member overlap with each other and are fixed together with a bolt 82.
The through holes 23a provided in the third fixing portion 23 of the second support member 20, the through hole 32a provided in the second end portion 32 of the connecting member, and the through hole 51a provided in the end portion 51 of the inflator bracket 50 are fixed together with a bolt 83.
The through hole 24 a provided in the fourth fixing portion 24 of the second support member 20 and the through hole 51 b provided in the end portion 51 of the inflator bracket 50 overlap with each other, and are fixed together with a bolt 84 .
By attaching the support member assembly structure to the roof side rail in this manner, at least two support members to which vehicle interior parts are attached can be attached to the roof side rail of the vehicle.

Second Embodiment
The support member assembly structure of the second embodiment is a form in which a pair of fixing portions of a first support member are connected by a first reinforcing portion integrally formed on the connecting member, and a pair of fixing portions of a second support member are connected by a second reinforcing portion integrally formed on the connecting member.

FIG. 10 is a front view schematically showing another example of the support member assembly structure.
FIG. 11 is a rear view schematically showing another example of the support member assembly structure.
10 and 11 uses a connecting member 30' having a second end with a different shape from that of the connecting member 30 of the support member assembly structure of the first embodiment. Also, uses an inflator bracket 50' having an end 51 with a different shape from that of the inflator bracket 50 of the support member assembly structure of the first embodiment.
In the support member assembly structure 2, the third fixing portion 23 and the fourth fixing portion 24, which are a pair of fixing portions of the second support member 20, are connected by a second reinforcing portion 37 integrally formed on the connecting member 30'.

The end 51 of the inflator bracket 50', which is part of the curtain airbag device 40, is attached to the second end 32 of the connecting member 30', but its position differs from the support member assembly structure of the first embodiment.

The second end 32 of the connecting member 30' has a through hole 32a and a through hole 32b, with the through hole 32a being located at the rearmost position of the second end 32 relative to the vehicle and the through hole 32b being located at the frontmost position of the vehicle.
The through hole 32a overlaps with the through hole 23a formed in the third fixing portion 23 of the second support member 20. The end portion 51 of the inflator bracket 50' does not overlap with the through hole 32a.

The through hole 32b overlaps with the through hole 24a provided in the fourth fixing portion 24 of the second support member 20. It also overlaps with the through hole 51b provided in the end portion 51 of the inflator bracket 50'.
These three members are preferably joined by spot welding the second end 32 of the connecting member 30' to the end 51 of the inflator bracket 50' at the fourth fixing portion 24 of the second support member 20.

In the support member assembly structure 2 having the above-described configuration, the third fixing portion 23 and the fourth fixing portion 24, which are a pair of fixing portions of the second support member 20, are connected by a second reinforcing portion 37 integrally formed on the connecting member 30'.
10 and 11 , the portion of the connecting member 30′ that connects the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 serves as the second reinforcing portion 37. In FIGS. 10 and 11 , the outline of the position of the second reinforcing portion 37 is indicated by hatching.
When a second reinforcing portion 37 is provided between the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20, the distance between the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 is fixed by the second reinforcing portion 37, thereby suppressing deformation of the second support member 20.

Other than the configuration described above, the configuration can be the same as the support member assembly structure of the first embodiment, so further detailed description will be omitted. Furthermore, by attaching the support member assembly structure to the roof side rail in the same manner as the support member assembly structure of the first embodiment, at least two support members to which vehicle interior parts can be attached can be attached to the roof side rail of the vehicle.

(Third embodiment)
The support member assembly structure of the third embodiment is a configuration in which a pair of fixing portions of a first support member are connected by a first reinforcing portion integrally formed with the connecting member, and a pair of fixing portions of a second support member are connected by a second reinforcing portion integrally formed with the connecting member and a second reinforcing portion integrally formed with the inflator bracket.

FIG. 12 is a front view schematically showing another example of the support member assembly structure.
FIG. 13 is a rear view schematically showing another example of the support member assembly structure.
12 and 13, a connecting member 30' having a second end with a different shape from the connecting member 30 of the support member assembly structure of the first embodiment is used. The inflator bracket 50 used is the same as the inflator bracket 50 of the support member assembly structure of the first embodiment.
In the support member assembly structure 3, the third fixing portion 23 and the fourth fixing portion 24, which are a pair of fixing portions of the second support member 20, are connected by a second reinforcing portion 37 formed integrally with the connecting member 30' and a second reinforcing portion 55 formed integrally with the inflator bracket.

The end 51 of the inflator bracket 50, which is part of the curtain airbag device 40, is attached to the second end 32 of the connecting member 30', but its position differs from the support member assembly structure of the first embodiment and the support member assembly structure of the second embodiment.

The second end 32 of the connecting member 30' has a through hole 32a and a through hole 32b, with the through hole 32a being located at the rearmost position of the second end 32 relative to the vehicle and the through hole 32b being located at the frontmost position of the vehicle.
The end 51 of the inflator bracket 50 has a through hole 51a and a through hole 51b, with the through hole 51a being located at the rearmost position of the end 51 of the vehicle and the through hole 51b being located at the frontmost position of the vehicle.

The through hole 23a provided in the third fixing portion 23 of the second support member 20 overlaps with the through hole 32a provided in the second end portion 32 of the connecting member 30' and the through hole 51a provided in the end portion 51 of the inflator bracket 50.
The through hole 24a provided in the fourth fixing portion 24 of the second support member 20 overlaps with the through hole 32b provided in the second end portion 32 of the connecting member 30' and the through hole 51b provided in the end portion 51 of the inflator bracket 50.

The three components, the connecting member 30', the second support member 20, and the inflator bracket 50, overlap at the second end 32 of the connecting member 30' and the end 51 of the inflator bracket 50. These three components are preferably joined by spot welding the second end 32 of the connecting member 30' to the end 51 of the inflator bracket 50 at the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20.

In the support member assembly structure 3 having the above-described configuration, the third fixing portion 23 and the fourth fixing portion 24, which are a pair of fixing portions of the second support member 20, are connected by a second reinforcing portion 37 formed integrally with the connecting member 30' and a second reinforcing portion 55 formed integrally with the inflator bracket 50.
12 and 13 , the portion of the connecting member 30′ that connects the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 serves as the second reinforcing portion 37. In FIGS. 12 and 13 , the outline of the position of the second reinforcing portion 37 is indicated by hatching.
13, the portion of the inflator bracket 50 that connects the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 serves as the second reinforcing portion 55. In FIG. 13, the outline of the position of the second reinforcing portion 55 is indicated by hatching.
When the second reinforcing portion 37 and the second reinforcing portion 55 are provided between the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20, the distance between the third fixing portion 23 and the fourth fixing portion 24 of the second support member 20 is fixed by the second reinforcing portion 37 and the second reinforcing portion 55, thereby suppressing deformation of the second support member 20.

Other than the configuration described above, the configuration can be the same as the support member assembly structure of the first embodiment, so further detailed description will be omitted. Furthermore, by attaching the support member assembly structure to the roof side rail in the same manner as the support member assembly structure of the first embodiment, at least two support members to which vehicle interior parts can be attached can be attached to the roof side rail of the vehicle.

The present invention is not limited to the content described in the above embodiment, and each configuration described in the embodiment may be appropriately deleted, added, modified, or combined without departing from the spirit of the present invention.

1, 2, 3: Support member assembly structure 10: First support member 11: First fixing portion 11a: Through hole 12 of first fixing portion: Second fixing portion 12a: Through hole 15 of first fixing portion: Mounting portion 16, 17: Bending portion 20: Second support member 23: Third fixing portion 23a: Through hole 24 of third fixing portion: Fourth fixing portion 24a: Through hole 25 of fourth fixing portion: Mounting portion 26, 27: Bending portion 30, 30': Connecting member 31: First end portion 31a, 31b: Through hole 32 of first end portion: Second end portion 32a, 32b: Through hole 35 of second end portion : First reinforcing portion 36: Fitting hole 36a: Large diameter hole 36b: Small diameter hole 37, 55: Second reinforcing portion 40: Curtain airbag device 50, 50': Inflator bracket 51: Ends 51a, 51b of inflator bracket: Through hole 52 at end of inflator bracket: Inflator fixing portion 52a, 52b: Inflator fixing hole 60: Clips 61, 62: Annular plate 63: Cylinder 70: Inflator 80: Airbag 81, 82, 83, 84: Bolt 90: Center pillar 100: Roof side rail

Claims (4)

A support member assembly structure including at least two support members attached to a roof side rail of a vehicle,
a first support member and a second support member, each having a pair of fixing portions arranged side by side in the longitudinal direction of the roof side rail and fixed to the roof side rail, and a mounting portion protruding from the fixing portions toward the inside of the vehicle and to which an interior part is attached;
a connecting member that connects adjacent fixed portions of the two support members;
Equipped with
A support member assembly structure, wherein the connecting member is integrally formed with a reinforcing portion that connects a pair of fixing portions of at least one of the first support member or the second support member. a curtain airbag device attached to the roof side rail and having an inflator and an inflator bracket for fixing the inflator;
the reinforcing portion is a first reinforcing portion that connects a pair of fixing portions of the first support member,
2. The support member assembly structure according to claim 1, wherein the pair of fixing portions of the second support member are connected by a second reinforcing portion integrally formed with the inflator bracket or the connecting member. The support member assembly structure described in claim 1 or 2, wherein the plate thickness of the connecting member is different from the plate thickness of the support member. A support member assembly structure as described in any one of claims 1 to 3, wherein the connecting member has a fitting hole for fitting a clip attached to a roof side rail of a vehicle.