JP2012126284A - Retractor mounting structure of seat belt system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retractor mounting structure of a seat belt system wherein the settings for routing a webbing belt of an occupant seated at an outside seat or a center seat of a rear seat can be easily configured.SOLUTION: The retractor mounting structure of the seat belt system includes: a center seat retractor 21 of the center seat of the rear seat for seating three occupants; an upper bracket 34 for attaching the upper portion of the center seat retractor 21 to a rear pillar 3; an lower bracket 37 for attaching the lower portion of the center seat retractor 21 to the rear pillar 3; a seat belt anchor provided on the rear pillar 3 for a left-side seat belt system; an anchor mounting part 48 provided on the side of a vehicle body for attaching the seat belt anchor to the rear pillar 3. In the lower bracket 37, a release hole 46 is formed for releasing the anchor mounting part 48. The release hole 46 is provided in a position displaced forward from the line P connecting a bolt 32 of the upper bracket 34 and a bolt 39 of the lower bracket 37.

Description

  The present invention relates to a retractor mounting structure for a seat belt device.

  Some vehicle seats have a three-seat seat at the rear of the passenger compartment. This three-seat seat is provided with a seat belt device for a passenger seated at the center of the seat in addition to the seat belts for both the left and right outer seats. The retractor of the seat belt device for the occupant of the outer seat is provided in the lower part of the rear pillar, and the retractor of the seat belt device of the occupant seated in the center seat of the seat is provided above the retractor of the seat belt device of the occupant of the outer seat. (See Patent Document 1).

JP 2008-302798 A

In the above retractor mounting structure for a seat belt device, a bracket whose front and rear edges are joined in advance to the vehicle body is provided below the retractor of the occupant seated in the center seat, and a support member is projected from the bracket. The member supports the belt guide of the seat belt device of the passenger in the outer seat.
Therefore, when setting a bracket, there exists a subject that it is necessary to manufacture a bracket specially for every vehicle model. Further, since the webbing pull-out path is different between the center seat and the outer seat of the seat belt device for the occupant in the rear seat, it is necessary to set a portion for projecting the support portion of the bracket belt guide in consideration of the webbing pull-out path. is there.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a retractor mounting structure for a seat belt device that can easily set a webbing routing route for a passenger seated in an outer seat or a center seat of a rear seat.

  In order to achieve the above object, the invention described in claim 1 is directed to a central seat (for example, the central seat C in the embodiment) of a rear seat (for example, the seat S in the embodiment) seated side by side in the vehicle width direction. The seat belt retractor (for example, the central seat retractor 21 in the embodiment) of the seat belt device (for example, the central seat seat belt device 20 in the embodiment) of the occupant sitting on the vehicle body side portion ( For example, an upper bracket (for example, the upper bracket 34 in the embodiment) for attaching to the inner wall 6 of the rear pillar 3 in the embodiment, and a lower bracket (for example, the embodiment) for attaching the lower part of the seat belt retractor to the vehicle body side portion. A lower bracket 37) and an outer seat of the rear seat provided on the side of the vehicle body For example, a seat belt anchor (for example, the seat belt anchor 13 in the embodiment) of a seat belt device (for example, the left seat belt device 10 in the embodiment) of an occupant sitting on the left seat L) in the embodiment, and the seat belt In order to attach the anchor to the vehicle body, it has an attachment member (for example, the anchor attachment portion 48 in the embodiment) provided on the vehicle body side, and the lower bracket has an escape hole (e.g., for escaping the attachment member). An escape hole 46) in the embodiment is formed, and the escape hole has a fastener for attaching the upper bracket to the vehicle body (for example, the bolt 32 in the embodiment) and a fastener for attaching the lower bracket to the vehicle body ( For example, is it on the line (for example, line P in the embodiment) connecting the bolt 39 in the embodiment? A seat belt retractor of an occupant seat belt device, which is provided at a position offset in the longitudinal direction of the vehicle body and is seated on the center seat of the rear seat, is attached to the vehicle body side portion by the upper bracket and the attachment member is attached from the escape hole. The lower bracket is attached to the side of the vehicle body in a protruding state, and a seat belt anchor of a seat belt device of a passenger seated on the outer seat is fixed to the attachment member protruding from the escape hole. .

  The invention described in claim 2 is characterized in that the escape hole is provided above a bolt for attaching the lower bracket to a vehicle body.

  According to a third aspect of the invention, the lower bracket is fixed to a rear wall of the seat belt retractor (for example, the rear wall 25 in the embodiment), and the retractor mounting portion (for example, the retractor mounting portion 40 in the embodiment) and the A vehicle body attachment portion (for example, the vehicle body attachment portion 41 in the embodiment) for attachment to the vehicle body (for example, the rear pillar 3 in the embodiment) and a connection wall (for example, the connection wall 42 in the embodiment) that connects these are rearward of the vehicle body. When viewed from the side, it is stepped and formed in a crank shape on the outside of the vehicle.

According to the first aspect of the present invention, when the seat belt retractor of the occupant seat belt apparatus seated in the center seat of the rear seat is attached to the vehicle body, the seat belt anchor of the occupant seat belt apparatus seated in the outer seat. Since it is only necessary to form a relief hole in the lower bracket so that the position of is the optimum position, if the vehicle type is different with the lower bracket as a common part, it is only necessary to change the formation position of the relief hole, The versatility of the parts is high, and it is possible to easily set the routing route of the webbing of the occupant seated in the outer seat and the central seat of the rear seat.
Also, the position of the relief hole is provided at a position offset from the line connecting the fastener for attaching the upper bracket to the vehicle body and the fastener for attaching the lower bracket to the vehicle body, so the offset amount is adjusted. The webbing route routed from the seat belt retractor seated in the center seat of the rear seat and the webbing route routed from the seat belt retractor seated in the outer seat of the rear seat are optimal. Can be set.
According to the invention described in claim 2, the size of the lower bracket can be reduced accordingly. Therefore, even a vehicle having a small head clearance to the roof portion can be easily applied.
According to the third aspect of the present invention, it is possible to increase the strength and rigidity in the direction in which the lower bracket buckles when a load is applied from the rear.

It is a perspective view which shows the sheet | seat vicinity of embodiment of this invention. It is a front view of FIG. It is a side view of FIG. It is a side view which shows the state which mounted | wore with the interior material in FIG. It is a perspective view which shows the attachment state of the center seat retractor of FIG. It is a perspective view of the center seat retractor of FIG. It is a side view which shows the attachment state of the center seat retractor of FIG.

Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a rear pillar 3 is provided at the rear of the vehicle body along the rear side of the glass attachment opening 2 provided in the rear fender 1. A roof side rail 4 is connected to the upper part of the rear pillar 3 along the longitudinal direction of the vehicle body, and a roof rear rail 5 is connected to the upper part of the rear pillar 3 along the vehicle width direction.

In FIG. 1, S is a seat constituting the rear seat in the third row from the front side, and this seat S can be seated side by side by three people. FIG. 1 shows a part of the seat back of the left seat L and the central seat C. In the left seat L, a headrest H is attached to the upper part of the seat back.
On the inner wall 6 of the rear pillar 3, the left seat retractor 11 of the left seat seat belt device 10 that restrains an occupant seated on the left seat L near the lower corner of the glass mounting opening 2 is configured to move the belt winding shaft 12 in the longitudinal direction of the vehicle body. It is attached toward.
Above the left seat retractor 11, a center seat retractor 21 of a center seat belt device 20 that restrains an occupant of the center seat C of the seat S is attached with the belt take-up shaft 22 facing the vehicle body longitudinal direction. In addition, in the center seat retractor 21, illustration of an internal structure is abbreviate | omitted.

  The center seat retractor 21 includes a casing 23 that supports a belt winding drum (not shown). The casing 23 includes left and right side walls 24 and a rear wall 25 (see FIG. 3) facing in the longitudinal direction of the vehicle body. Upper mounting pieces 26 extending from the rear wall 25 are formed on the upper portions of the left and right side walls 24. An upper plate 27 is disposed above the left and right side walls 24 so as to straddle the left and right side walls 24.

  As shown in FIGS. 2 and 3, the upper plate 27 is provided so as to cover the upper portion of the side wall 24, and a flat portion 29 provided with a guide hole 28 of the webbing W and an upper edge of the flat portion 29 on the outer edge of the passenger compartment. It is comprised with the attachment piece 30 formed toward the direction. An escutcheon 31 for smooth sliding of the webbing W is attached to the guide hole 28 of the flat portion 29. A mounting piece 30 of the upper plate 27 is superposed on an upper mounting piece 26 extending from the rear wall 25, and the upper mounting piece 26 and the mounting piece 30 are fixed to a mounting seat 33 on the inner wall 6 of the rear pillar 3 by a bolt 32. . The upper plate 27 and the upper mounting piece 26 constitute an upper bracket 34 that fixes the upper part of the central seat retractor 21 to the inner wall 6 of the rear pillar 3.

The webbing W drawn out from the guide hole 28 of the upper plate 27 is along the roof portion 8 below the roof rear rail 5 and above the boundary portion between the center seat C and the left seat L of the seat S shown in FIG. Has been pulled out. A left tongue 35 is attached to the tip of the webbing W, and a right tongue 36 is inserted in the middle of the webbing W. The left tongue 35 is detachably fixed to a left buckle (not shown), and the right tongue 36 is detachably fixed to a right buckle (not shown).
The right tongue 36 and the left tongue 35 can be pulled out from the opening 15 of the interior material 14 that covers the roof portion 8. The webbing W of the left seat belt device 10 is also drawn out from the opening 17 of the interior material 16 that covers the rear pillar 3 (see FIG. 4).

A lower bracket 37 is attached to the lower portion of the rear wall 25 of the central seat retractor 21. The lower bracket 37 is fixed to the upper part of the inner wall 6 of the rear pillar 3 and the lower part of the central seat retractor 21 is fixed to the vehicle body.
Specifically, the upper part of the lower bracket 37 is fixed to the lower part of the rear wall 25 of the central seat retractor 21 via two fixing bolts 38, 38, and the lower part of the lower bracket 37 is secured to the inner wall of the rear pillar 3 by the bolt 39. 6 is fixed.

  The lower bracket 37 is connected to the retractor mounting portion 40 fixed to the rear wall 25 of the central seat retractor 21, the vehicle body mounting portion 41 for mounting to the inner wall 6 of the rear pillar 3, and the connection along the inner wall 6 of the rear pillar 3. The wall 42 is formed in a crank shape having a step on the outside of the vehicle as viewed from the rear of the vehicle body.

  As shown in FIGS. 5 and 6, a temporary fastening hook 44 is provided at the lower end portion of the vehicle body mounting portion 41 of the lower bracket 37 to be locked in a locking hole 43 provided in the inner wall 6 of the rear pillar 3. A bolt mounting portion 45 of the bolt 39 is set near the hook 44 and above. A relief hole 46 is formed above the bolt mounting portion 45 of the vehicle body mounting portion 41 of the lower bracket 37. An anchor mounting portion 48 having a female screw 47 is fixed to the inner wall 6 of the rear pillar 3 corresponding to the escape hole 46. The escape hole 46 allows the anchor mounting portion 48 to protrude, and the anchor belt 49 is fixed to the anchor mounting portion 48 by an anchor bolt 49 so that the seat belt anchor 13 of the left seat retractor 11 can rotate. reference).

  Here, as shown in FIG. 7, the escape hole 46, that is, the anchor mounting portion 48, includes a bolt 32 that fixes the upper mounting piece 26 and the upper plate 27 of the central seat retractor 21 to the inner wall 6 of the rear pillar 3, and a lower bracket 37. It is formed at a position offset from the line P connecting the bolt 39 for attaching to the inner wall 6 of the rear pillar 3 by a distance D to the front side of the vehicle body.

  According to the above embodiment, when attaching the central seat retractor 21 of the central seat belt device 20 of the passenger seated in the central seat C, the upper bracket 34 of the central seat retractor 21 is attached to the inner wall 6 of the rear pillar 3 and escaped. The lower bracket 37 is attached to the inner wall 6 of the rear pillar 3 with the anchor mounting portion 48 protruding from the hole 46, and the seat belt anchor 13 of the left seat belt device 10 is anchored to the anchor mounting portion 48 protruding from the escape hole 46. Secure with bolts 49.

  Therefore, when the center seat retractor 21 is attached to the inner wall 6 of the rear pillar 3, the seat belt anchor 13 is set so that the position of the seat belt anchor 13 of the center seat retractor 21 of the occupant seated on the left seat L is the optimum position. The escape hole 46 for projecting the anchor attachment portion 48 for attachment only needs to be formed in the lower bracket 37. Therefore, the lower bracket 37 can be used as a common part, and when the vehicle type is different, it is only necessary to change the formation position of the escape hole 46, the versatility of the lower bracket 37 is high, and the left seat L of the seat S, The route setting of the webbing W of the occupant seated in the central seat C can be easily performed.

  Also, the position of the relief hole 46 is a distance from the line P connecting the bolt 32 for attaching the upper bracket 34 to the inner wall 6 of the rear pillar 3 and the bolt 39 for attaching the lower bracket 37 to the inner wall 6 of the rear pillar 3 to the front side. Since it is provided at a position offset by D, the routing route of the webbing W pulled out from the central seat retractor 21 can be set on the rear side, and the webbing W that restrains the passenger in the central seat C can be more It can be in close contact with the chest.

  Furthermore, since the escape hole 46 is provided above the bolt 39 for attaching the lower bracket 37 to the inner wall 6 of the rear pillar 3, the size of the lower bracket 37 can be reduced accordingly. Therefore, the present invention can be applied even to a vehicle having a small head clearance to the roof portion 8.

  The lower bracket 37 includes a retractor mounting portion 40 fixed to the rear wall 25 of the central seat retractor 21, a vehicle body mounting portion 41 for mounting on the inner wall 6 of the rear pillar 3, and a connection wall 42 that connects them to the rear of the vehicle body. Since it is formed in a crank shape with a step on the outside of the vehicle as viewed from the back, it can receive a load in the buckling direction that is advantageous in terms of strength and rigidity when a load is applied from the rear, so load in the bending direction The amount of movement of the central seat retractor 21 can be reduced as compared with the case of receiving.

  In addition, this invention is not restricted to the said embodiment, For example, when the center seat retractor 21 is arrange | positioned on the right side of a vehicle body, it can be applied also between the right seat retractors of the seat S.

S seat C center seat 20 center seat seat belt device 21 center seat retractor 3 rear pillar (vehicle body)
6 Inner wall (side)
34 Upper bracket 37 Lower bracket L Left seat (outer seat)
10 Seatbelt device for left seat 13 Seatbelt anchor 48 Anchor mounting portion (mounting member)
46 Escape hole 32 Bolt (fastener)
39 bolts (fasteners)
P line 25 Rear wall 40 Retractor mounting part 41 Car body mounting part 42 Connection wall

Claims (3)

A seat belt retractor of a seat belt device of a passenger seated in a central seat of a rear seat seated side by side in the vehicle width direction;
An upper bracket for attaching the upper part of the seat belt retractor to the side of the vehicle body;
A lower bracket for attaching the lower part of the seat belt retractor to the side of the vehicle body;
A seat belt anchor of a seat belt device of an occupant seated on an outer seat of the rear seat, provided on a side of the vehicle body;
In order to attach the seat belt anchor to the vehicle body, it has an attachment member provided on the vehicle body side,
The lower bracket is formed with a relief hole for escaping the mounting member,
The escape hole is provided at a position offset in a vehicle longitudinal direction from a line connecting a fastener for attaching the upper bracket to the vehicle body and a fastener for attaching the lower bracket to the vehicle body,
A seat belt retractor of a seat belt device of an occupant seated in the center seat of the rear seat is attached to the vehicle body side portion by the upper bracket, and the lower bracket is attached to the vehicle body side with the attachment member protruding from the escape hole. A retractor mounting structure for a seat belt device, wherein a seat belt anchor of a seat belt device of an occupant seated on the outer seat is fixed to the mounting member that is attached to a portion and protrudes from the escape hole.   2. The retractor mounting structure for a seat belt apparatus according to claim 1, wherein the escape hole is provided above a bolt for mounting the lower bracket to a vehicle body.   In the lower bracket, a retractor mounting portion fixed to the rear wall of the seat belt retractor, a vehicle body mounting portion for mounting on the vehicle body, and a connection wall that connects these are formed stepwise on the vehicle outer side when viewed from the rear of the vehicle body. The retractor mounting structure for a seat belt apparatus according to claim 1 or 2, wherein the structure is formed in a crank shape.

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