JP2006315572A - Seat belt retractor mounting structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat belt retractor mounting structure of an automobile capable of reinforcing a side sill by a reinforcing member, increasing the mounting strength of a seat belt retractor by mounting the seat belt retractor by using the reinforcing member, simplifying the structure by reducing the number of part items, and enhancing the assembling property of the seat belt retractor. <P>SOLUTION: In the seat belt retractor mounting structure, an opening part 20b is formed in a lower portion of an inner panel 20 of a center pillar 4, and a seat belt retractor 30 accommodated inside the center pillar 4 is mounted on a vehicle body 2 from the opening part 20b. A reinforcing member 40 is provided inside a side sill 3 on the lower side of the center pillar 4. An extension part 41 extending upward of the side sill 3 is provided on the reinforcing member 40, and a lower end of a base plate 34 of the seat belt retractor 30 is mounted on the extension part 41 of the reinforcing member 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure in which an opening is formed in a lower portion of an inner panel of a center pillar of an automobile, and a seat belt retractor accommodated in the center pillar is attached to a vehicle body from the opening.

  2. Description of the Related Art Conventionally, a seat belt device installed in an automobile has a webbing and a seat belt retractor capable of winding and pulling out the webbing, and the webbing is pulled out from the seat belt retractor and mounted on a passenger's trunk. Here, in the seatbelt device for the front seat, a structure is known in which an opening is formed in the lower part of the inner panel of the center pillar, and the seatbelt retractor is accommodated in the center pillar from the opening and attached to the vehicle body. .

For example, in the seat belt retractor mounting structure disclosed in Patent Document 1, a bracket formed in a letter-shape is provided inside the outer side of the center pillar and side sill, and the center portion of the bracket and the lower end portion of the seat belt retractor are bolts. The one end of the bracket is bolted to the closing plate and reinforcement of the center pillar, and the other end of the bracket is bolted to the inner panel of the side sill. The upper end of the seat belt retractor is bolted to the inner panel of the center pillar.
JP-A-10-203307

  Conventionally, when an opening is formed in the lower part of the inner panel of the center pillar, and the seat belt retractor housed inside the center pillar is attached to the center pillar from the opening, the mounting strength of the seat belt retractor is reduced and it is practically usable. There is a fear of not being. The seat belt retractor mounting structure of Patent Document 1 is improved in that respect, but requires a separate bracket, which increases the number of parts and complicates the structure.

  In addition, since the bracket is provided inside the center pillar and side sill outside the vehicle, it may deteriorate in appearance and may interfere with other parts, and the bracket and seat belt retractor can be joined. Since the connecting work with the center pillar and the side sill is required, the seat belt retractor is not easily assembled.

  By the way, in the side sill, in particular, in the connection portion with the center pillar, a cross member extending in the vehicle width direction is often connected, and it is preferable to reinforce. The reinforcement can be performed by separately providing a reinforcement member inside the side sill, but providing the reinforcement member only for reinforcement is unreasonable because it increases the number of parts and complicates the vehicle body structure.

  An object of the present invention is to enhance the mounting strength of a seat belt retractor by reinforcing a side sill with a reinforcing member and mounting the seat belt retractor using the reinforcing member in a seat belt retractor mounting structure of an automobile. By simplifying the structure by reducing the number of points, making the reinforcing member not look bad or obstructing other parts, improving seat belt retractor assembly, etc. is there.

  According to a first aspect of the present invention, there is provided an automobile seat belt retractor mounting structure in which an opening is formed at a lower portion of an inner panel of a center pillar of an automobile and a seat belt retractor accommodated in the center pillar is attached to the vehicle body from the opening. In the belt retractor mounting structure, a reinforcing member is provided inside the side sill on the lower side of the center pillar, and an extending portion extending above the side sill is provided on the reinforcing member, and a seat belt retractor is provided on the extending portion of the reinforcing member. The part is attached.

  In this seat belt retractor mounting structure, the reinforcing member is provided inside the side sill on the lower side of the center pillar. The side sill is reinforced by the reinforcing member, and the strength and rigidity of the side sill are increased. A seat belt retractor accommodated from the opening of the inner panel is attached to the vehicle body inside the center pillar, and in this case, a part of the seat belt retractor is attached to the extending portion provided on the reinforcing member so as to extend above the side sill. Mounted. That is, the seat belt retractor can be attached using a reinforcing member that reinforces the side sill. Therefore, the mounting strength of the seat belt retractor is increased, and the reinforcing member is provided in advance so that the extended portion of the reinforcing member does not deteriorate the appearance or interfere with other parts. By attaching to the inside of the side sill, it becomes possible to attach easily by connecting a part of the seat belt retractor to the extending portion of the reinforcing member.

Here, the following configuration can be adopted in the invention of claim 1.
The reinforcing member includes an upper plate part joined to the upper wall of the inner panel of the side sill, and an inner joint flange extending downward from the vehicle inner end of the upper plate part and joined to the inner wall of the inner panel of the side sill. And the extension portion extends upward from the vehicle outer side end portion of the upper plate portion. A cross member extending in the vehicle width direction between the left and right center pillars of the automobile and forming a closed cross section with the floor panel is provided, and the reinforcing member includes a front plate portion extending downward from a front end portion of the upper plate portion thereof. And a rear plate portion extending downward from the rear end portion of the upper plate portion, and the reinforcing member is disposed on an extension in the length direction of the cross member. The extension portion of the reinforcing member is joined to the upper end portion of the inner panel of the side sill together with the inner panel of the center pillar, and the inner panel of the center pillar is extended into the side sill to divide the inside of the side sill in the vehicle width direction. (Claim 4).

  According to the seatbelt retractor mounting structure for an automobile of claim 1, the side sill is reinforced by providing the reinforcing member inside the side sill on the lower side of the center pillar, and the opening of the inner panel is inserted into the center pillar. A part of the accommodated seat belt retractor is attached to an extending portion provided on the reinforcing member so as to extend above the side sill. In other words, it is possible to attach the seat belt retractor using a reinforcing member that reinforces the side sill, thereby increasing the attachment strength of the seat belt retractor, reducing the number of parts, simplifying the structure, and reinforcing A reinforcing member can be provided so that the extended portion of the member does not get in the way of appearance or other components are assembled, and the reinforcing member is attached in advance to the inside of the side sill. Since a part of the seat belt retractor can be easily attached to the extending portion of the seat belt, the assembly of the seat belt retractor can be improved.

  According to the seatbelt retractor mounting structure for an automobile according to claim 2, the reinforcing member includes an upper plate portion joined to the upper wall of the inner panel of the side sill, and extends downward from the vehicle inner end portion of the upper plate portion, and the side sill. The inner panel flange is joined to the inner wall of the inner panel, and the extension part extends upward from the vehicle outer end of the upper plate part. The protruding part can be reliably extended above the side sill, and even if a large load is applied to the extended part from the seat belt retractor, the load is distributed to the inner panel of the side sill by the upper plate part and the inner joint flange. Therefore, it is possible to prevent damage to the reinforcing member, side sill and center pillar as much as possible.

  According to the vehicle seat belt retractor mounting structure of claim 3, the cross member extending in the vehicle width direction and forming a closed cross section with the floor panel is provided between the left and right center pillars of the vehicle, and the reinforcing member is Because it has a front plate portion extending downward from the front end portion of the plate portion and a rear plate portion extending downward from the rear end portion of the upper plate portion, and the reinforcing member is arranged on the extension in the length direction of the cross member. The rigidity of the side sill in the vehicle width direction is such that the portal portion formed of the upper plate portion, the front plate portion, and the rear plate portion of the reinforcing member functions as an extension portion extending the cross member in the length direction inside the side sill. In addition, the strength and rigidity of the reinforcing member itself are increased, and the vehicle inner end of the front plate portion and the rear plate portion can be joined to the inner wall of the inner panel of the side sill. The side sill of Securely attached by section can receive an upward load applied to the extending portion effectively to reliably disperse the inner panel of the side sill.

  According to the automobile seat belt retractor mounting structure of the fourth aspect, the extension portion of the reinforcing member is joined to the upper end portion of the inner panel of the side sill together with the inner panel of the center pillar, and the inner panel of the center pillar is extended to the inside of the side sill. Since the interior of the side sill is divided into the width direction of the vehicle, the mounting strength of the extended part of the reinforcing member is increased, and the rigidity of the side sill is increased. Performance is improved.

  The vehicle seat belt retractor mounting structure of the present invention is a structure in which an opening is formed in the lower part of the inner panel of the center pillar of the vehicle, and the seat belt retractor accommodated in the center pillar is attached to the vehicle body from the opening. A reinforcing member is provided inside the side sill on the lower side of the center pillar, an extending portion extending upward of the side sill is provided on the reinforcing member, and a part of the seat belt retractor is attached to the extending portion of the reinforcing member. .

  As shown in FIGS. 1 to 3, the vehicle body 2 of the automobile 1 includes a pair of left and right side sills 3 extending in the front-rear direction, a pair of left and right center pillars 4 rising from the side sills 3, and left and right side sills 3. The floor panel 5 having both ends in the vehicle width direction coupled to the left and right center pillars 4 extends in the vehicle width direction, and both ends are coupled to the left and right side sills 3 to form a closed section 7 with the floor panel 5. A cross member 6 is provided.

  The side sill 3 includes an inner panel 10, an outer panel 11, a reinforcement 12, and the like. A portion of the outer panel 11 located below the center pillar 4 forms a common cab side outer panel with the outer panel 21 of the center pillar 4. The inner panel 10 includes a substantially vertical inner wall 10a positioned at the inner end of the vehicle, an upper wall 10b extending from the upper end of the inner wall 10a to the vehicle outer side, and an upper end flange 10c extending upward from the outer end of the upper wall 10b. The lower wall 10d extends from the lower end portion of the inner wall 10a to the vehicle outer side, and the lower end flange 10e extends downward from the vehicle outer end portion of the lower wall 10d.

  The outer panel 11 includes a substantially vertical outer wall 11a positioned at an outer end of the vehicle, a lower wall 11b extending from the lower end of the outer wall 11a toward the vehicle inner side, and a lower end flange 11c extending downward from the inner end of the lower wall 11b. Have. The reinforcement 12 is formed in a U-shape that opens to the inside of the vehicle in cross section, and is disposed between the inner panel 10 and the outer panel 11, an upper end flange 12 a is formed at the upper end portion thereof, and a lower end is formed at the lower end portion. A flange 12b is formed. The inner panel 10 and the upper end flanges 10c and 12a of the reinforcement 12 are joined in a state in which a pillar extending portion 20a of the inner panel 20 of the center pillar 4 described later and an extending portion 41 of the reinforcing member 40 are sandwiched. 10, the outer panel 11, and the lower end flanges 10e, 11c, and 12b of the reinforcement 12 are joined.

  A flange 5 a at the end of the floor panel 5 and a flange 6 a at the end of the cross member 6 are joined to the inner surface of the inner panel 10. Here, an upward convex cross-shaped cross member 6 is disposed on the upper side of the floor panel 5, and its front and rear lower ends are joined to the upper surface of the floor panel 5, and the floor panel 5, the cross member 6, A closed section 7 is formed.

  The center pillar 4 includes an inner panel 20, an outer panel 21, a reinforcement 22 and the like. The inner panel 20 and the outer panel 21 extend in a substantially straight shape in the vertical direction, and are formed so that the front and rear lengths of the lower part gradually increase. The lower end portion of the inner panel 20 is formed in a pillar extension portion 20 a that extends into the side sill 3, and the upper end portion of the pillar extension portion 20 a is the extension portion 41 of the reinforcing member 40 and the reinforcement 12. Joined in a state of being sandwiched between the upper end flange 12 a and the lower end portion of the pillar extension portion 20 a is joined to the lower end flange 12 b of the reinforcement 12 of the side sill 3.

  As shown in FIGS. 1 to 3, the seat belt retractor mounting structure 8 of the present invention forms an opening 20 b in the lower part of the inner panel 20 of the center pillar 4, and the inside of the center pillar 4 from the opening 20 b. The seat belt retractor 30 accommodated in the vehicle body 2 is attached to the vehicle body 2, and a reinforcing member 40 is provided inside the side sill 3 on the lower side of the center pillar 4, and the extending portion 41 extending above the side sill 3 is provided in the reinforcing member 40. The lower end portion of the seat belt retractor 30 is attached to the extending portion 41 of the reinforcing member 40.

  Here, the seat belt retractor 30 is provided with a take-up / drawing mechanism 32 capable of winding and pulling the webbing 31 and a pretensioner 33 for forcibly winding and tightening the webbing 31 in the event of a vehicle collision. A drawer mechanism 32 and a pretensioner 33 are mounted on the base plate 34 (see FIGS. 1 and 3).

  The opening 20b is formed in a size and shape that can accommodate the seat belt retractor 30 inside the center pillar 20 in the inner panel 20 of the center pillar 4 immediately above the side sill 3, and the edge of the opening 20b is It is bent inward and formed in an annular reinforcing portion 20c. The seat belt retractor 30 is housed in the center pillar 4 with the base plate 34 positioned slightly inside the opening 20b, and the upper end portion of the base plate 34 attaches the mounting plate member 35 to the seat belt retractor 30. The lower end portion of the base plate 34 is attached to the extending portion 41 of the reinforcing member 40.

  The mounting plate member 35 is formed in a crank shape in cross section, and the lower end of the mounting plate member 35 projects to the vehicle inner side from the upper portion. The lower end portion of the mounting plate member 35 is connected to the upper end portion of the base plate 34 by bolts and nuts 37. A slit 35b is formed in the horizontal portion 35a in the middle of the mounting plate member 35, and the webbing 31 drawn out from the winding / drawing mechanism 32 extends upward through the slit 35b. A synthetic resin webbing guide 35c is attached to the edge of the slit 35b.

  As shown in FIGS. 3 to 7, the reinforcing member 40 includes an upper plate portion 42 joined to the upper wall 10 b of the inner panel 10 of the side sill 3, and extends downward from the vehicle inner end portion of the upper plate portion 42. An inner joint flange 43 joined to the inner wall 10a of the third inner panel 10, a front plate portion 44 extending downward from the front end portion of the upper plate portion 42, and a rear plate portion 45 extending downward from the rear end portion of the upper plate portion. The extending portion 41 extends upward from the vehicle outer side end portion of the upper plate portion 42. The reinforcing member 40 is attached to the inside of the side sill 3 when the vehicle body 2 including the side sill 3 is assembled.

  Here, a cross member 6 extending in the vehicle width direction between the left and right center pillars 4 and forming a closed section with the floor panel 5 is provided, and a reinforcing member 40 is provided on the extension of the cross member 6 in the length direction. Is arranged. In addition, the pillar extension portion 20a of the inner panel 20 of the center pillar 4 extends into the side sill 3, and the inside of the side sill 3 is divided in the vehicle width direction, and the pillar extension portion 20a moves downward toward the inside of the vehicle. The reinforcing member 40 is provided on the inner side of the pillar extending portion 20a.

  Long and long joining flanges 44a and 45a are formed at the vehicle inner side ends of the front plate portion 44 and the rear plate portion 45, respectively, and these joining flanges 44a and 45a are joined to the inner wall 10a. Here, the vertical and longitudinal positions of the upper plate portion 42, the inner joint flange 43, the front plate portion 44, and the rear plate portion 45, and the vertical and longitudinal positions of the upper wall and the front and rear walls of the cross member 6 substantially coincide with each other. The gate-shaped portion including the upper plate portion 42, the front plate portion 44, and the rear plate portion 45, and the cross member 6 are in a state of being coupled with the inner wall 10a of the inner panel 10 of the side sill 3 interposed therebetween. Here, on the inner wall 10 a of the inner panel 10 of the side sill 3, the inner joint flange 43 of the reinforcing member 40 is joined to the joint portion of the cross member 6 with the flange 6 a.

  The extending portion 41 includes a vertical portion 41a extending upward from the upper plate portion 42, a step portion 41b bent from the vertical portion 41a to the vehicle inner side, and an attachment portion 41c bent upward from the step portion 41b. The front and rear width of the plate portion 42 is about half of the front and rear width. The vertical portion 41 a is joined in a state of being sandwiched between the upper end flange 10 c of the inner panel 10 of the side sill 3 and the pillar extending portion 20 a of the inner panel 20 of the center pillar 4.

  The step portion 41b is formed in a partial cylindrical shape, and the attachment portion 41c is formed in a fan shape in a side view. A bolt hole 41d is formed in the attachment portion 41c, and a nut 50 is attached in advance to the surface of the attachment portion 41c on the vehicle outer side by welding in a state where the nut 50 is aligned with the bolt hole 41d. The bolt 51 is inserted into the bolt hole 34a of the base plate 34 and the bolt 41d of the mounting portion 41c while the lower end portion of the base plate 34 of the seat belt retractor 30 is in contact with the mounting portion 41c from the inside of the vehicle. The lower end portion of the base plate 34 is coupled to the extending portion 41 of the reinforcing member 40 by being screwed and fastened to 50.

The effect of the seat belt retractor mounting structure 8 will be described.
By providing the reinforcing member 40 inside the side sill 3 below the center pillar 4, the side sill 3 is reinforced and the base of the seat belt retractor 30 accommodated in the center pillar 4 from the opening 20 b of the inner panel 20. The lower end portion of the plate 34 is attached to an extending portion 41 provided on the reinforcing member 40 so as to extend above the side sill 3.

  In other words, the seat belt retractor 30 can be attached using the reinforcing member 40 that reinforces the side sill 3, thereby increasing the attachment strength of the seat belt retractor 30, reducing the number of parts, and simplifying the structure. In addition, the reinforcing member 40 can be provided so that the extension portion 41 of the reinforcing member 40 does not deteriorate the appearance or interfere with the assembly of other parts. Since the base plate 34 of the seat belt retractor 30 can be easily attached to the extending portion 41 of the reinforcing member 40 by attaching to the extending portion 41 of the reinforcing member 40, the assemblability of the seat belt retractor 30 can be improved. it can.

  The reinforcing member 40 is joined to the upper wall 10 b of the inner panel 10 of the side sill 3, and extends downward from the vehicle inner end of the upper board 42, and joined to the inner wall 10 a of the inner panel 10 of the side sill 3. Since the extending portion 41 extends upward from the vehicle outer side end portion of the upper plate portion 42, the reinforcing member 40 is securely attached to the inside of the side sill 3, and the extending portion is provided. 41 can be reliably extended above the side sill 3, and even when a large load is applied to the extended portion 41 from the seat belt retractor 30, the load is applied to the inner side of the side sill 3 by the upper plate portion 42 and the inner joint flange 43. It can be dispersed and efficiently received in the panel 10, and damage to the reinforcing member 40, the side sill 3, and the center pillar 4 can be prevented as much as possible.

  A cross member 6 that extends in the vehicle width direction between the left and right center pillars 4 and forms a closed section 7 with the floor panel 5 is provided, and the reinforcing member 40 is a front plate that extends downward from the front end portion of the upper plate portion 42. Portion 44 and a rear plate portion 45 extending downward from the rear end portion of the upper plate portion 42, and the reinforcing member 40 is disposed on the longitudinal extension of the cross member 6. Since the gate-shaped portion composed of the plate portion 42, the front plate portion 44, and the rear plate portion 45 functions as an extension portion that extends the cross member 6 in the length direction inside the side sill 3, the side sill 3 in the vehicle width direction Since the rigidity is increased and the strength and rigidity of the reinforcing member 40 itself is also increased, the vehicle inner side ends of the front plate portion 44 and the rear plate portion 45 can be joined to the inner wall 10b of the inner panel 10 of the side sill 3, so that the reinforcing member 40 inside the side sill 3 More securely attached, the load applied to the extending portion 41 can be received efficiently by reliably dispersed by the inner panel 10 of the side sill 3.

  The extending portion 41 of the reinforcing member 40 is joined to the upper end portion of the inner panel 10 of the side sill 3 together with the inner panel 20 of the center pillar 4, and the inner panel 20 of the center pillar 4 extends to the inside of the side sill 3. Is divided in the vehicle width direction, so that the mounting strength of the extending portion 41 of the reinforcing member 40 is increased, and the rigidity of the side sill 3 is reliably increased. Will improve.

  The shape and size of the reinforcing member 40 can be appropriately changed according to the structure of the side sill 3 and the center pillar 4. It should be noted that various modifications can be added without departing from the spirit of the present invention, and the present invention can be applied to various seat belt retractor mounting structures for automobiles.

It is a perspective view from the vehicle inside of the vehicle body of the automobile according to the example. It is a perspective view from the vehicle inner side of the principal part of the vehicle body of FIG. It is a longitudinal cross-sectional view of the part containing the side sill and center pillar of a vehicle body. It is a perspective view of a reinforcing member. It is a side view from the vehicle inside of a reinforcing member. It is a top view of a reinforcing member. It is a front view of a reinforcing member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Car body 3 Side sill 4 Center pillar 5 Floor panel 6 Cross member 7 Closed cross section 8 Seat belt retractor mounting structure 10 Inner panel 10a Inner wall 10b Upper wall 20 Inner panel 20b Opening 30 Seat belt retractor 40 Reinforcement member 41 Extension part 42 Upper plate portion 43 Inner joint flange 44 Front plate portion 45 Rear plate portion

Claims (4)

In an automobile seat belt retractor mounting structure in which an opening is formed in the lower part of the inner panel of the center pillar of the automobile and the seat belt retractor accommodated in the center pillar is attached to the vehicle body from the opening.
A reinforcing member is provided inside the side sill on the lower side of the center pillar, and an extending portion extending upward of the side sill is provided on the reinforcing member.
A seatbelt retractor mounting structure for an automobile, wherein a part of the seatbelt retractor is attached to the extending portion of the reinforcing member.   The reinforcing member includes an upper plate part joined to the upper wall of the inner panel of the side sill, and an inner joint flange extending downward from the vehicle inner end of the upper plate part and joined to the inner wall of the inner panel of the side sill. The vehicle seat belt retractor mounting structure according to claim 1, wherein the extension portion extends upward from a vehicle outer side end portion of the upper plate portion. A cross member extending in the vehicle width direction between the left and right center pillars of the automobile and forming a closed cross section with the floor panel is provided.
The reinforcing member has a front plate portion extending downward from the front end portion of the upper plate portion, and a rear plate portion extending downward from the rear end portion of the upper plate portion,
The seat belt retractor mounting structure for an automobile according to claim 2, wherein the reinforcing member is disposed on an extension in a length direction of the cross member. The extension part of the reinforcing member is joined to the upper end part of the inner panel of the side sill together with the inner panel of the center pillar,
4. The seatbelt retractor mounting structure for an automobile according to claim 3, wherein an inner panel of the center pillar extends inside the side sill, and the inside of the side sill is divided in the vehicle width direction.

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