JPH04154486A - Structure for assembling retractor to lower portion of center pillar - Google Patents

Abstract

PURPOSE:To enhance mounting strength by providing a reinforcing member for a retractor assembling portion, and sticking at least one of the upper and lower pieces of the reinforcing member to the retractor assembling portion of the inner member of a center pillar and the longitudinal wall portion of the reinforcing member to the outer member of the center pillar. CONSTITUTION:A bracket 40 serving as a reinforcing member for a retractor mounting portion is disposed inside a closed cross section structure 28 located outside of the vehicle width direction of the circular hole 36 of the pillar inner panel 26 of a center pillar 14. The bracket 40 is provided with a rectangular upper piece 40A and a lower piece 40B disposed parallel to each other in roughly the horizontal direction and the front portion 42A of the longitudinal wall 42 of the bracket 40 is welded to the front longitudinal wall portion 24B of pillar reinforcement 24 and the rear portion 42B of the longitudinal wall 42 is welded to a rear longitudinal wall portion 24E. The side edge portion of the upper piece 40A of the bracket 40 which side edge portion extends in the direction of the width of a vehicle is curved upward into a flange 48 and a weld nut is welded to a rectangular tongue portion 50 extending to the center portion of the flange 48 in roughly the longitudinal direction of the vehicle body and a retractor-mounting bolt is threadably engaged in the weld nut.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a center pillar lower retractor assembly structure for assembling a retractor for a seat belt device to the lower part of a center pillar of a vehicle body.

[Conventional technology]

A center pillar is provided in a vehicle body such as an automobile as a closed cross-section structural member that forms both left and right ends of the center portion of the passenger compartment in the longitudinal direction of the vehicle body, and the lower end of this center pillar is
It intersects with rockers arranged along the longitudinal direction of the vehicle body at the bottom of both ends in the vehicle width direction.

Further, as shown in FIG. 5, a through hole 64 is formed in the lower part of the center pillar inner 62 that constitutes the inner side of the center pillar 60 in the vehicle width direction. A retractor 66 as a device is accommodated. The upper mounting portion 66A and lower mounting portion 66B of the retractor 66 are connected by mounting bolts 68, respectively.
It is fixed near the upper side of the through hole 64 and near the lower side of the through hole 64. Also, IJ) Lower mounting part 6 of the tractor 66
A partition panel 68 that closes off the lower part of the center pillar 60 is provided near 6B. This partition panel 6
A flange 68A is provided at the edge of the retractor 66, and this flange 68A is fixed to the center pillar reinforcement 63, and improves the support rigidity of the lower mounting portion 66B of the retractor 66. -105877).

However, in this center pillar lower retractor assembly structure, the partition panel 68 has a flat plate shape. Therefore, as shown in FIGS. 6 and 7, when an extremely large load F is applied to the retractor 66 in the direction of torsion of the partition panel 68 due to sudden deceleration of the vehicle, etc., the load F causes the partition panel to be Panel 68 is deformed. Therefore, the load acting on the retractor is transferred to the center pillar 60.
There was a problem that the information could not be transmitted sufficiently.

[Problem to be solved by the invention]

In consideration of the above-mentioned facts, the present invention aims to provide a center pillar lower retractor assembly structure that can sufficiently transmit the load acting on the retractor to the center pillar outer member and the center pillar inner member.

[Means to solve the problem]

The present invention has a closed cross-sectional structure extending in the vertical direction of the vehicle body, including a center pillar outer member constituting an outer part of the center pillar in the vehicle width direction, and a center pillar inner member fixed to the inner side of the center pillar outer member in the vehicle width direction. A center pillar lower retractor assembly structure for assembling a retractor for a seat belt device to the center pillar inner member includes an upper piece and an upper piece disposed substantially horizontally in parallel within the closed cross-sectional structure. A retractor assembly portion reinforcing member having a lower piece and a vertical wall portion connecting at least all other edges of the upper piece and the lower piece, excluding the retractor attachment sides, to each other; At least one of the upper piece and the lower piece of the assembly part reinforcing member is fixed to the retractor assembly part of the center pillar inner member, and the vertical wall part of the retractor assembly part reinforcing member is fixed to the center pillar outer member. It is characterized by

[Effect]

In the present invention having the above configuration, IJ) The retractor assembly portion reinforcing member has an upper piece and a lower piece arranged substantially horizontally in parallel, and these upper pieces and lower pieces are connected to at least all other parts except the side where the retractor is attached. It has a vertical wall portion that connects the edges to each other, and
At least one of the upper piece and the lower piece is fixed to the retractor assembly portion of the center pillar inner member, and the vertical wall portion is fixed to the center pillar outer member.

Therefore, the retractor assembly portion reinforcing member has a U-shaped or rectangular cross-sectional shape in each of the vehicle body vertical direction, vehicle body longitudinal direction, and vehicle width direction. Therefore, the retractor assembly portion reinforcing member is less likely to deform than a flat bracket, and can sufficiently transmit the load F acting on the retractor to the center pillar outer member and the center pillar inner member.

〔Example〕

An embodiment of the center pillar lower retractor assembly structure according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

In the figure, arrow FR indicates the forward direction of the vehicle body, arrow IN indicates the inside direction of the vehicle body, and arrow UP indicates the upward direction of the vehicle body.

As shown in FIG. 4, around the front door attachment opening IOA and around the rear door attachment opening 10B of the vehicle body 10 to which the center pillar lower retractor assembly structure of this embodiment is applied,
It is composed of a cymen outer 12.

That is, as shown in FIG. 1, the outer part in the vehicle width direction of the intersection 18 between the center pillar 14 and the rocker 16 of the vehicle body 10 is constituted by the outer member 12, and the lower part of the outer member 12 extends in the longitudinal direction of the vehicle body. The rocker outer portion 20 is along the outer surface of the rocker.

In addition, from the central part of the rocker outer part 200 in the longitudinal direction of the vehicle body,
A center pillar outer portion 22 that constitutes a part of the center pillar outer member is branched toward the upper side of the vehicle body. The lower portion of the center pillar outer portion 22 widens toward the front and rear of the vehicle body.

As shown in FIG. 2, the cross-sectional shape of the center pillar outer portion 22 when viewed from above in the vertical direction of the vehicle body is cone-shaped with the opening facing inward in the vehicle width direction.

At the front end of the base 22A of the center pillar outer part 22,
A bulging portion 22B is formed outward in the vehicle width direction.

A stepped portion 22D protruding toward the front of the vehicle body is formed at the inner end in the vehicle width direction of the front vertical wall portion 22C of the center pillar outer portion 22. It is bent to form a flange 22E. The inner end in the vehicle width direction of the rear vertical wall portion 22F of the center pillar outer portion 22 is
It is bent rearward to form a flange 22G.

As shown in FIG. 1, the cross-sectional shape of the intersection portion 18 of the rocker outer portion 20 of the SIMEN outer 12 when viewed from the front side in the longitudinal direction of the vehicle body and the rear side in the longitudinal direction of the vehicle body is a shape with the opening facing inward in the vehicle width direction. It is said to be a letter. Further, the earthen wall portion 2OA of this portion is continuous with the front vertical wall portion 22C and the rear vertical wall portion 22F of the center pillar outer portion 22 of the Cymen outer 12.

As shown in FIG. 3, the lower wall surface 2 of the rocker outer portion 20
The inner end in the vehicle width direction of 0B is bent downward in the vehicle longitudinal direction to form a flange 20C. Flange 20C
The lower end portion of is bent inward in the vehicle width direction.

Inside the center pillar outer B22 of the Simone outer 12, a pillar reinforcement 2 as another part of the center pillar outer member is provided along the center pillar outer part 22.
4 is placed.

As shown in FIG. 2, the cross-sectional shape of the pillar reinforcement 240 when viewed from above in the vertical direction of the vehicle body is U-shaped with the opening facing inward in the vehicle width direction.

A base portion 24A of the pillar reinforcement 24 has a planar shape, and is welded to a base portion 22A of the center pillar outer portion 22 from the inside in the vehicle width direction. Pillar reinforcement 2
A step portion 24C that protrudes toward the front of the vehicle body is formed at the inner end portion in the vehicle width direction of the front vertical wall portion 24B of No. 4. This step 24
The inner end in the vehicle width direction of C is bent forward and forms a flange 24.
D, and this flange 24D is welded to the flange 22E of the center pillar outer portion 22 from the inside in the vehicle width direction.

The inner end in the vehicle width direction of the rear vertical wall portion 24E of the pillar reinforcement 24 is bent rearward to form a flange 24F, and this flange 24F is welded to the flange 22G of the center pillar outer portion 22 from the inside in the vehicle width direction. There is.

As shown in FIG. 3, the lower end portion of the pillar reinforcement 24 is bent inward in the vehicle width direction to form a bottom portion 24G, and this bottom portion 24G is the lower surface 20B of the rocker outer portion 20.
It is welded to the top of the vehicle body in the vertical direction.

As shown in FIG. 1, a pillar inner panel 26 as a center pillar inner member is arranged on the inner side of the Simen outer 12 in the vehicle width direction, and the lower part of this pillar inner panel 26 widens in the longitudinal direction of the vehicle body. There is.

As shown in FIG. 2, the front end of the pillar inner panel 26 extends toward the front in the longitudinal direction of the vehicle body to form a flange 26A, and this flange 26A is welded to the flange 24D of the pillar reinforcement 24 from the inside in the vehicle width direction. ing. The rear end of the pillar inner panel 26 extends rearward in the longitudinal direction of the vehicle body and is a flange 26B.
It is welded to F from the inside in the vehicle width direction.

Therefore, the center pillar 14 is
2 and the pillar inner panel 26 form a closed cross-sectional structure 28 extending in the vertical direction of the vehicle body.

As shown in FIG. 3, the lower end edge 26A of the pillar inner panel 26 is welded to the flange 20C of the rocker outer section 20 from the inside in the vehicle width direction.

As shown in FIG. 1, the upper end portions of the intersection portion 18 of the pillar inner panel 26 on the front and rear sides in the longitudinal direction of the vehicle body are bent inward in the vehicle width direction to form a flange 26B. It is welded to the earthen wall portion 2OA from below in the vertical direction of the vehicle body.

A rocker inner panel 30, which is elongated in the longitudinal direction of the vehicle body, is disposed at a position corresponding to the rocker outer portion 20 of the symmetry outer 12 with the pillar inner panel 26 in between. The flange 31 is bent inward in the direction of the flange 30A.
The inner end in the vehicle direction is welded from the upper side in the vehicle body vertical direction. The lower part of the rocker inner panel 30 is inclined downward to the outside of the vehicle width square, forming an inclined part 30B.
The lower end of B is bent downward to form a flange 30C. The flange 30C is welded to the lower end edge 26A of the pillar inner panel 26 from the outside in the vehicle width direction.

A rectangular opening 32 is provided approximately in the center of the corner of the pillar inner panel 26 that widens toward the end, and a third
As shown in the figure, the retractor 34 is force-accommodated. Near the upper and lower sides of the opening 32 in the upper and lower parts of the vehicle body,
A circular hole 36, 38 is drilled in each case.

As shown in FIG. 1, a bracket 40 serving as a reinforcing member for the retractor attachment portion is disposed inside the closed cross-section structure 28 on the outside in the vehicle width direction of the circular hole 36 of the pillar inner panel 26. The bracket 40 includes a rectangular upper piece 40A and a lower rectangular piece 4'OB that are arranged substantially horizontally in parallel. When the retractor is attached to the upper piece 40A and the lower piece 4OB, their edges except for the sides (inside in the vehicle width direction) are connected to each other by a vertical wall 42. Therefore, the cross-sectional shape of the bracket 40 when viewed from the vehicle width direction is a rectangle with the upper piece 40A and the lower piece 40B as the upper and lower surfaces, and the front part 42A and rear part 42B of the vertical wall 42 as the left and right sides, and the cross-sectional shape is not deformed. It is said to have a difficult structure. Further, as shown in FIG. 2, the cross-sectional shape of the bracket 40 when viewed from the top and bottom of the vehicle body is a U-shape consisting of a front portion 42A, a rear portion 42B of the vertical wall 42, and an intermediate portion 42C between the front portion 42A and the rear portion 42B. It has a structure that is difficult to deform in cross section. Moreover, as shown in FIG. 3, the bracket 4
The cross-sectional shape of 0 when viewed from the front and back direction of the vehicle body is U-shaped, consisting of the upper piece 40A, the lower piece 40B, and the intermediate portion 42C of the vertical wall 42, and has a structure that is difficult to deform in cross section.

As shown in FIG. 2, the front portion 42A of the vertical wall 42 of the bracket 40 is
It is welded to B from the rear side in the longitudinal direction of the vehicle body. Further, the rear portion 42B of the vertical wall 42 is welded to the rear vertical wall portion 24E of the pillar reinforcement 24 from the front side in the longitudinal direction of the vehicle body, and as shown in FIG. A hole 43 for mounting a check arm is provided coaxially with the rear vertical wall portion 24E.

Furthermore, a rectangular notch 44 is formed in the lower piece 40B of the bracket 40 from the inside in the vehicle width direction, and the lower piece 40B
is designed so that it does not interfere with the retractor. The edge of this notch 44 is bent downward to form a flange 46.

As shown in FIG. 1, the inner edge in the vehicle width direction of the upper piece 40A of the bracket 40 is bent upward, and the flange 4
It is said to be 8. A substantially central portion of the flange 48 in the longitudinal direction of the vehicle body extends upward in the vertical direction of the vehicle body, and is formed into a rectangular tongue portion 50 . A circular hole 52 having the same diameter as the circular hole 36 is bored in the approximate center of the tongue portion 50, and the tongue portion 5o is attached to the pillar inner panel 26 so that the circular hole 52 and the circular hole 36 are coaxial. It is in contact.

As shown in FIG. 3, a weld nut 54 is welded to the tongue portion 50 of the bracket 40 from the outside in the vehicle width direction coaxially with the circular hole 52. The leg portion 56A of the bolt 56 is screwed together. In addition, the circular hole 38 of the pillar inner panel 26
A reinforcing plate 58 is welded to the outside of the outer peripheral portion in the vehicle width direction, and a circular hole 59 coaxially with and having the same diameter as the circular hole 38 is bored approximately in the center of the reinforcing plate 58 . A weld nut 54 is welded coaxially with the circular hole 59 from the outside in the vehicle width direction of the reinforcing plate 58, and the leg portion 56 of the mounting bolt 56 of the retractor 34 is attached to the weld nut 54.
A is screwed together.

Next, the operation of this embodiment will be explained.

In this embodiment with the above configuration, as shown in FIG. 1, the cross-sectional shape of the bracket 40 when viewed from the vehicle width direction is the upper piece 40A.
It has a rectangular shape with the lower piece 40B as the upper and lower surfaces and the front section 42A and rear section 42B of the vertical wall 42 as the left and right surfaces, and has a structure that is difficult to deform in cross section. Also, as shown in Figure 2,
The cross-sectional shape of the bracket 40 when viewed from the top and bottom of the vehicle body is U-shaped, consisting of a front portion 42A, a rear portion 42B of the vertical wall 42, and an intermediate portion 42C between the front portion 42A and the rear portion 42B. It is said to have a difficult structure. Further, as shown in FIG. 3, the cross-sectional shape of the bracket 40 when viewed from the longitudinal direction of the vehicle body is U-shaped, consisting of an upper piece 4OA, a lower piece 40B, and an intermediate portion 42C of the vertical wall 42. The structure is said to be difficult to deform.

Therefore, when a load due to the tension of the webbing (arrow F in FIG. 6 and arrow F in FIG. 7) is applied to the retractor 34, the bracket 40 is more stable than the conventional flat partition panel 68 shown in FIG. Hard to deform. Therefore, the load acting on the retractor 34 via the bracket 40 can be sufficiently transmitted to the center pillar outer portion 22 of the symmetry outer 12 and the pillar inner panel 26.

Furthermore, in this embodiment, the bracket 40 can prevent cross-sectional deformation of the closed cross-section structure 28, and the door lowering rigidity and maneuverability can be improved without increasing the thickness of the pillar inner panel 26. I can do it.

In the above embodiment, the bracket 40 was provided on the upper mounting part of the IJ center 34, but the retractor 3
A bracket 40 may be provided on the lower mounting portion of 4. Further, in the above embodiment, the vertical wall 42 of the bracket 40
The intermediate portion 42C is the base 2 of the pillar reinforcement 24.
4A, the intermediate portion 42C of the vertical wall 42 of the bracket 40 is separated from the base 24A of the pillar reinforcement 24.
It may be welded with.

〔Effect of the invention〕

Since the present invention has the above configuration, it has an excellent effect in that the load acting on the retractor can be sufficiently transmitted to the center pillar outer member and the center pillar inner member.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a center pillar lower retractor assembly structure according to an embodiment of the present invention, as viewed diagonally from the rear inside the vehicle;
Figure 2 is a sectional view taken along the line 2-2 in Figure 1, Figure 3 is a sectional view taken along the line 3-3 in Figure 1.
4 is a schematic perspective view showing a vehicle body to which a center pillar lower retractor assembly structure according to an embodiment of the present invention is applied, and FIG. 5 shows a center pillar lower retractor assembly structure according to a conventional example. Figure 6 is a perspective view of the inside of the vehicle as seen diagonally from the front, Figure 6 is an explanatory diagram of the action seen from the front of the vehicle showing the direction of the load acting on the retractor, and Figure 7 is a view from the width front of the vehicle showing the direction of the load acting on the retractor. FIG. 14... Center pillar 22... Center pillar outer part, 24... Pillar reinforcement, 26... Pillar inner panel 28... Closed section structure, 34... Retractor, 40... Bracket, 4OA...upper piece, 40B-, lower piece, 42...vertical wall.

Claims (1)

[Claims] (1) A center pillar outer member that constitutes the outer part of the center pillar in the vehicle width direction and a center pillar inner member that is fixed to the inner side of the center pillar outer member in the vehicle width direction have a closed cross-sectional structure that extends in the vertical direction of the vehicle body. A center pillar lower retractor assembly structure for assembling a retractor for a seat belt device to the center pillar inner member at a lower part of the center pillar, wherein an upper piece and a lower piece are arranged substantially horizontally in parallel within the closed cross-sectional structure. and a vertical wall portion that connects all other edges of the upper piece and the lower piece, excluding at least the retractor attachment side, to each other, the retractor assembly portion reinforcing member is provided. At least one of the upper piece and the lower piece of the member is fixed to the retractor assembly part of the center pillar inner member, and the vertical wall part of the retractor assembly part reinforcing member is fixed to the center pillar outer member. Center pillar lower retractor assembly structure.