JP2013095302A - Mounting structure of seat belt device to vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress cost by reducing the number of parts for attaching a seat belt device to a vehicle body.SOLUTION: An attachment section 3c for a retractor 52 is set in an inner panel 3 of a rear pillar section 12b of a side panel of a vehicle body and an attachment section 3d of a lap outer anchor 51 is set at a position below the attachment section. A reinforcement member 31 is provided for reinforcing both of the retractor attachment section 3c and the lap outer anchor attachment section 3d. The reinforcement member 31 is one component made of a metal plate, and is piled up on outer side (rear side) surfaces of the two attachment sections 3c, 3d of the inner panel 3 and fixed thereto by spot welding. The retractor 52 and the lap outer anchor 51 respectively retaining both end parts of a webbing 50 is attached to the same reinforcement member 31.

Description

  The present invention relates to a structure for attaching a seat belt device to a vehicle body.

A so-called three-point seat belt device that restrains a waist and a chest (shoulder) of a seated person on a vehicle seat by a belt-like webbing (belt) is generally a lap outer anchor that holds one end of the webbing. And a retractor that holds the other end of the webbing so that it can be wound and pulled out. The seat belt device is mounted on the vehicle body by attaching the wrap outer anchor and the retractor to members such as side panels positioned outside the seat.
Further, a tongue plate is provided on the middle part of the webbing so as to be slidable in the belt-like longitudinal direction. When using the seat belt device, the webbing is pulled out from the retractor by the required length, and this tongue plate is held by engaging the inner buckle fixed inside the seat. It is possible to restrain the occupant's waist on the seat at the portion up to the wrap outer anchor (lap belt) and the chest (shoulder) at the portion from the tongue plate to the shoulder anchor (shoulder belt).
In addition, the technique relevant to this is disclosed by the following patent document 1, for example.

JP 2008-302798 A

However, in the technique of the above-described three-point seat belt device, generally, the attachment points of the retractor and the wrap outer anchor are set at a distance from each other. For example, the attachment location of the retractor is set on the inner panel constituting the inside of the side panel of the vehicle body, and the attachment location of the wrap outer is set on the floor panel of the vehicle body. In addition, in consideration of the possibility that a strong force is input from the seat belt device when the vehicle body suddenly decelerates, etc. on each of the mounting positions on the inner panel and the floor panel, the reinforcing members are overlapped with each other by spot welding. It was fixed.
In this way, when the attachment locations of the retractor and the wrap outer anchor are set at a distance from each other, considering the input from the seat belt device assumed for each attachment location, the material and plate thickness of the reinforcing member, In addition, it is necessary to set the number of spot welding points, and different types of reinforcing members have been used for each attachment location. For this reason, when attaching a seatbelt apparatus to the vehicle body, the cost became high, and there was a problem that it was necessary to secure a space around each attachment point.

  The present invention has been made in view of such problems, and a problem to be solved by the present invention is to reduce the number of parts and reduce the cost when the seat belt device is attached to the vehicle body.

In order to solve the above problems, the mounting structure of the seat belt device according to the present invention to the vehicle body takes the following means.
According to a first aspect of the present invention, there is provided a structure for attaching a seat belt device to a vehicle body. And a retractor that holds the other end side of the webbing so that the other end side of the webbing can be wound and pulled out. The attachment points of the anchor and the retractor are set in the vicinity of each other, and a single reinforcing member that reinforces each of the attachment points is fixed, and the wrap outer anchor and the retractor are attached to the same reinforcing member. It is characterized by being.
According to this configuration, the retractor and the lap outer anchor that respectively hold both ends of the webbing are attached to the same reinforcing member that is fixed to the inner panel of the side panel on the side of the vehicle body. For this reason, when attaching a seatbelt apparatus to a vehicle body, compared with the case where the attachment location of a retractor and a wrap outer anchor is each reinforced with another reinforcement member, a number of parts can be reduced and cost can be held down.

A structure for attaching a seat belt device to a vehicle body according to a second invention of the present invention is a structure for attaching the seat belt device according to the first invention to a vehicle body, wherein the webbing is held by the lap outer anchor. The body is restrained on the seat in a spatial arrangement in which the one end extends from the wrap outer anchor and the direction in which the other end is pulled out from the retractor is different from each other. And
According to this configuration, in a state where the body of the seated person is restrained on the seat by the webbing, a direction in which one end of the webbing extends from the wrap outer anchor and a direction in which the other end of the webbing is pulled out from the retractor, They are different from each other. Further, as described above, the retractor and the wrap outer anchor that respectively hold the both ends of the webbing are attached to the same reinforcing member fixed to the inner panel of the vehicle body. As a result, when longitudinal tension is applied to the webbing from the body of the seated person restrained on the seat, force is applied to the single reinforcing member from different directions at the attachment locations of the wrap outer anchor and the retractor. Therefore, a part of both of these forces is offset. Therefore, the strength of reinforcing the inner panel by the reinforcing member can be suppressed, and the cost can be suppressed.

According to the first invention, when the seat belt device is attached to the vehicle body, the number of parts can be reduced and the cost can be reduced.
According to the second invention, the cost can be further reduced when the seat belt device is attached to the vehicle body.

In this embodiment, it is a side view which shows a part of the vehicle body seen from the left side with the side panel on the left side of the vehicle removed, and a seat belt device attached thereto. It is a perspective view which expands and shows the attachment location of the seatbelt apparatus which concerns on this embodiment. It is sectional drawing which cuts and shows the attachment location of the seatbelt apparatus which concerns on this embodiment by the III-III line of FIG. It is a figure which shows the reinforcement member which reinforces the attachment location of the seatbelt apparatus which concerns on this embodiment. It is a figure explaining the state at the time of use of the seatbelt apparatus concerning this embodiment.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
The vehicle according to the present embodiment includes a floor panel 11, a side panel 12, a back panel 13, a roof panel 14, and the like as structural members (body members) constituting the vehicle body 1. FIG. 1 shows a part of the vehicle body 1 viewed from the left side with the side panel 12 on the left side of the vehicle removed. FIG. 2 is a perspective view of the corner on the right rear side of the passenger compartment, where the three members of the floor panel 11, the back panel 13, and the rear pillar portion 12b of the side panel are in contact with each other, as viewed obliquely from the front.
On the floor panel 11 forming the floor of the passenger compartment, seats are attached in two rows in the front-rear direction. Although the seat is omitted in FIGS. 1 and 2, the rear right seat 2 is shown together with the seated person S in FIG. 5.
An entrance 12a for the rear seat 2 is opened in the side panel 12 that forms the side wall of the passenger compartment, and a seat belt device for the rear seat 2 is provided on the rear pillar 12b that forms a column on the rear side of the entrance 12a. 5 is provided. The seat belt device 5 is a so-called three-point seat belt device 5 that includes a long belt-like webbing 50 (belt) and restrains the waist and chest of the seated person S on the seat 2 by the webbing 50. In each figure, the seat belt device 5 for the rear right seat 2 is shown as an example, but the one for the rear left seat 2 is also provided symmetrically.
As shown in FIG. 1, the seat belt device 5 is an assembly composed of a plurality of parts such as a webbing 50, a wrap outer anchor 51, a retractor 52, a shoulder anchor 53, a tongue plate 54, and the like. It is attached to the rear pillar part 12b of the side panel 12 in a state. Among these components, the wrap outer anchor 51 and the retractor 52 are both attached to the lower portion of the rear pillar portion 12b, and the shoulder anchor 53 is attached to the upper portion of the rear pillar portion 12b.

First, the attachment location of the wrap outer anchor 51 and the retractor 52 will be described with reference to FIGS.
The side panel 12 is generally configured by bonding the inner panel 3 and the outer panel 4 in a hollow shape. The inner panel 3 below the rear pillar portion 12b is provided with a substantially rectangular opening 3a penetrating inside and outside, and the main body case 52a of the retractor 52 is disposed in the opening 3a. On the inner panel 3, attachment positions 3b and 3c of the retractor 52 are set at positions above and below the opening 3a. Further, on the inner panel 3, a mounting location 3d of the wrap outer anchor 51 is set at a position further below the retractor mounting location 3c below the opening 3a. At the retractor attachment location 3c and the wrap outer anchor attachment location 3d below the opening 3a, a reinforcing member 31 that reinforces these two locations is provided.
The reinforcing member 31 is a single metal plate part, and is overlapped on the outer (back side) surfaces of the two attachment points 3c and 3d of the inner panel 3 and spot-welded at six welding points 31a (see FIG. 4). Has been fixed. The upper end portion of the reinforcing member 31 extends to the lower edge of the opening 3 a where the retractor 52 is disposed, and the lower end portion extends to a position lower than the height of the floor panel 11.
As shown in FIG. 4, the reinforcing member 31 is provided with bolt holes 31 c and 31 d at positions corresponding to the lower retractor attachment location 3 c and the lap outer anchor attachment location 3 d set on the inner panel 3. A fixing bolt 32c and a support shaft bolt 32d (shown by a chain line in the figure) are passed through, respectively.
The reinforcing member 31 is formed in a bent shape that matches the shape of the inner panel 3, as shown in FIG. The inner panel 3 has a shape in which the periphery of the opening 3a is stepped inwardly (outside in the vehicle width direction) in a stepwise manner, and thereby, between the lower retractor attachment point 3c and the wrap outer anchor attachment point 3d. Has a step where the former is on the back side of the latter. Moreover, the same level | step difference is formed also under 3d of wrap outer anchor attachment locations. In accordance with the step shape of the inner panel 3, the reinforcing member 31 is formed with two steps in the vertical direction.

Next, details of various parts constituting the seat belt device 5 will be described.
As shown in FIGS. 2 and 3, the wrap outer anchor 51 holds one end 50 a of the webbing 50. A support bolt 32d having an axis in the vehicle width direction is fixed to the lap outer anchor attachment portion 3d set on the inner panel 3 and the reinforcing member 31 by fastening. The wrap outer anchor 51 is attached to the spindle bolt 32d so as to be rotatable around the axis. The wrap outer anchor 51 freely rotates around the spindle bolt with respect to the inner panel 3 in accordance with the direction of tension applied to the one end portion 50a of the webbing 50 being held.

As shown in FIGS. 2 and 3, the retractor 52 holds the other end 50 b of the webbing 50 so that it can be wound and pulled out. The retractor 52 is a winding device that retracts the other end portion 50b of the webbing 50 to the inside while winding it on the shaft, and a lock that operates when the other end portion 50b of the webbing 50 is suddenly pulled out to prevent further withdrawal. A known device (not shown) such as a device is provided inside the main body case 52a.
In the retractor 52, metal plate-like fixing tongues 52b and 52c for fixing to the inner panel 3 are provided integrally with the main body case 52a. The upper and lower fixing tongue pieces 52b and 52c are provided so as to extend vertically from the front side (inner side in the vehicle width direction) surface of the main body case 52a. The ends of the upper and lower fixing tongues 52b and 52c are overlapped on the inner sides of the upper and lower retractor mounting portions 3b and 3c set on the inner panel 3, and fastened and fixed by fixing bolts 32b and 32c. Has been.
In the center portion of the upper fixing tongue piece 52b, a drawer port 52d of the webbing 50 is provided through the front and back. The other end portion 50b of the webbing 50 is pulled out from the inside of the main body case 52a of the retractor 52 located on the back side of the fixing tongue piece 52b through the outlet port 52d.

  As shown in FIGS. 1 and 5, the shoulder anchor 53 holds the intermediate portion 50 c of the webbing 50 on the rear pillar portion 12 b. The shoulder anchor 53 is provided with a slit, and the intermediate portion 50c of the webbing 50 is slidably inserted into the slit and is held by the shoulder anchor 53 in a folded state. The shoulder anchor 53 is also attached in a rotatable state with respect to the inner panel 3 in the same manner as the wrap outer anchor 51.

  As shown in FIGS. 1 and 5, the tongue plate 54 is provided in a portion located between the wrap outer anchor 51 and the shoulder anchor 53 in the intermediate portion 50 c of the webbing 50. As shown in FIG. 5, when the seat belt device 5 is used, the tongue plate 54 is engaged with the inner buckle 55 attached to the inside of the seat 2 while the webbing 50 is pulled out from the retractor 52 by a required length. Let As a result, the waist of the seated person S in the portion from the tongue plate 54 to the lap outer anchor 51 (lap belt) of the webbing 50 and the portion of the webbing 50 from the tongue plate 54 to the shoulder anchor 53 (shoulder belt) Each chest (shoulder) can be restrained on the seat 2.

Next, the state at the time of use of the seatbelt apparatus 5 is demonstrated.
First, when the seat belt device 5 is not used, the webbing 50 is wound as much as possible by the retractor 52. At this time, as shown in FIG. 1, the webbing 50 extends upward from the wrap outer anchor 51, is folded back by the shoulder anchor 53, and is in a spatial arrangement state reaching the lower retractor 52.
On the other hand, when the seat belt device 5 is used, the webbing 50 is pulled out from the retractor 52 by a required length, and the tongue plate 54 provided in the intermediate portion 50c of the webbing 50 is fixed to the inner buckle 55 inside the seat 2. Has been. At this time, as shown in FIG. 5, the webbing 50 extends forward or inward from a lap outer anchor 51 that fixes one end 50 a, and the waist of the seated person S, the inner buckle 55, and the chest (shoulder of the seated person S) Part), the shoulder anchor 53 in order, and the spatial arrangement state which reaches to the lower retractor 52. That is, as indicated by an arrow in the figure, the direction in which the one end portion 50a of the webbing 50 extends from the lap outer anchor 51 is forward or inward, and the direction in which the other end portion 50b is pulled out from the retractor 52 is upward. These directions are different from each other.
When the vehicle decelerates suddenly when the seat belt device 5 is used, a strong inertial force acts forward on the seat occupant S, and the seat occupant S is restrained on the seat 2 by the webbing 50. A longitudinal tension is applied to the webbing 50 from the body. At this time, the webbing 50 is about to be pulled out from the retractor 52, but further pull-out is prevented by the locking device provided in the retractor 52. For this reason, a strong force is input to the attachment locations 3 c and 3 d on the inner panel 3 and the reinforcing member 31 via the wrap outer anchor 51 and the retractor 52 that respectively hold both ends of the webbing 50. Further, a strong force is also applied to the inner buckle 55 attached to the inside of the seat 2 via the tongue plate 54 that holds the intermediate portion 50 c of the webbing 50. The seat belt device 5 is thus supported at three points with respect to the vehicle body 1 in use.

The embodiment of the present invention configured as described above has the following operational effects.
According to this configuration, the retractor 52 and the lap outer anchor 51 that respectively hold both ends of the webbing 50 are opposed to the same reinforcing member 31 fixed to the inner panel 3 of the rear pillar portion 12b of the side panel 12 of the vehicle body 1. It is attached. For this reason, when attaching the seat belt device 5 to the vehicle body 1, the number of parts can be reduced and the cost can be reduced as compared with the case where the attachment portions 3c and 3d of the retractor 52 and the lap outer anchor 51 are reinforced by separate reinforcing members 31, respectively. Can be suppressed.

According to this configuration, as shown in FIG. 5, in a state where the body of the seated person S is restrained on the seat 2 by the webbing 50, the direction in which the one end portion 50 a of the webbing 50 extends from the lap outer anchor 51 is forward. Or the other end 50b is pulled out from the retractor 52 in the upward direction, and these directions are different from each other. Further, as described above, the retractor 52 and the lap outer anchor 51 that respectively hold both ends of the webbing 50 are attached to the same reinforcing member 31 fixed to the inner panel 3 of the rear pillar portion 12b of the side panel 12. .
As a result, when a longitudinal tension is applied to the webbing 50 from the body of the seated person S restrained on the seat 2 as described above, the attachment location 3d of the wrap outer anchor 51 is attached to the single reinforcing member 31. Since the force is input from different directions, from the front to the inside, and upward at the attachment portion 3c of the retractor 52, a part of the force is canceled out. As shown in FIG. 4, if the magnitudes of both forces are F and the directions thereof are considered to be at right angles to each other, the magnitude of the resultant force applied to the reinforcing member 31 is about 1 .4F, which is about 70% of 2F which is a simple total value. Therefore, the strength of reinforcing the inner panel 3 by the reinforcing member 31 can be suppressed as compared with the conventional structure in which the attachment portions 3c and 3d of the wrap outer anchor 51 and the retractor 52 are reinforced by separate reinforcing members 31, respectively. Therefore, when attaching the seatbelt apparatus 5 to the vehicle body 1, cost can be suppressed.

  Further, according to this configuration, the retractor 52 and the lap outer anchor 51 attached to the same reinforcing member 31 are provided with the webbing provided in the seat belt device 5 for the same seat (the rear right seat 2 in the present embodiment). 50 both ends are held. If the retractor 52 and the lap outer anchor 51 hold the end portion of the webbing 50 provided in the seat belt device 5 for different seats (for example, the rear right seat and the rear center seat), both seats are used. The above effects cannot be obtained unless the belt device 5 is used at the same time. Therefore, according to the configuration of the present embodiment, the above effect is effective even when there is only one seated person S who uses the seat belt device 5.

In addition, the attachment structure to the vehicle body of the seatbelt apparatus 5 which concerns on this invention is not limited to said embodiment, It can implement with other various forms.
The seat belt device 5 of the present embodiment is for the rear seat 2, and the lap outer anchor 51 and the retractor 52 of the seat belt device 5 are both attached to the rear pillar portion 12b of the side panel 12, It may be applied to a seat belt device for a driver's seat or a passenger's seat, and may be configured to be attached to the center pillar portion 12c of the side panel 12.

DESCRIPTION OF SYMBOLS 1 Vehicle body 11 Floor panel 12 Side panel 12a (rear seat) entrance / exit 12b Rear pillar part 12c Center pillar part 13 Back panel 14 Roof panel 2 (Rear part) Seat 3 Inner panel 3a Opening 3b, 3c Retractor attachment location (upper, lower)
3d Wrap outer anchor attachment location 31 Reinforcement member 31a Welding location 31c, 31d Bolt hole 32b, 32c Fixing bolt (upper, lower)
32d Spindle bolt 4 Outer panel 5 Seat belt device 50 Webbing 50a One end 50b The other end 50c Middle 51 Wrap outer anchor 52 Retractor 52a Body case 52b, 52c Fixing tongue (upper, lower)
52d Drawer 53 Shoulder Anchor 54 Tang Plate 55 Inner Buckle S Seated

Claims (2)

  A structure for attaching a seat belt device to a vehicle body, wherein the seat belt device includes a belt-shaped webbing for restraining the body of a seated person on the seat, a lap outer anchor for holding one end side of the webbing, A retractor that holds the other end of the webbing so that it can be wound and pulled out, and on the inner panel that forms the inner side of the side panel on the side of the vehicle body, each lap outer anchor and retractor attachment point of the seat belt device Are set in the vicinity of each other, a single reinforcing member that reinforces both of the attachment points is fixed, and the wrap outer anchor and the retractor are attached to the same reinforcing member. Mounting structure of the belt device to the car body. 2. The structure for mounting the seat belt device according to claim 1, wherein the webbing includes a direction in which the one end portion held by the lap outer anchor extends from the wrap outer anchor, and the other end from the retractor. A structure for attaching a seat belt device to a vehicle body, which restrains a seated person's body on the seat in a spatial arrangement state in which directions of the parts are different from each other.

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