JP4650002B2 - Wrap outer pretensioner arrangement structure - Google Patents

Description

  The present invention is connected to an end portion of a lap belt that restrains a waist portion of an occupant seated on a vehicle seat, and tightens the lap belt when an impact is detected or when an impact is predicted to be detected. More particularly, the present invention relates to an arrangement structure for a side sill of the wrap outer pretensioner.

  Usually, an automobile is provided with a seat belt device that restrains an occupant from an impact or the like by restraining the occupant when the automobile collides or rolls over. This seat belt device generally includes a retractor (seat belt retractor) disposed inside a center pillar on the side of the seat for winding the seat belt, and a seat belt pulled out from the retractor above the vehicle body. An upper anchor supported on the side, a lower anchor for fixing the front end of the seat belt supported by the upper anchor on the lower side of the vehicle body, and a slip that slides between the upper anchor and the lower anchor and separates the shoulder belt portion and the lap belt portion A tongue with a guide, and a buckle that is provided on a side edge opposite to the position where the retractor and the lower anchor are provided with respect to the seat and in which the tongue is detachably fitted.

In recent years, when a certain deceleration is detected, such as when an automobile collides or when a collision is predicted, the seat belt device is driven in the direction of tightening the seat belt using a force such as a spring or gunpowder. The development of seat belt pretensioners that impart tension to belts has become active. Among such seat belt pretensioners, there is a lap outer pretensioner that is connected to the lap belt by being attached to the lower anchor side and drives the lap belt in a tightening direction. Such a wrap outer pretensioner is, for example, an explosive type, which is formed in an elongated cylindrical shape, and has a conventional cover member attached, and a vehicle interior in a side sill extending laterally of the vehicle body at a side position of the seat. It is often disposed on the side surface in a state in which the axial direction coincides with the longitudinal direction of the vehicle body (see Patent Document 1).
Japanese Patent Laid-Open No. 2004-359028

  According to the arrangement structure of the wrap outer pretensioner described in Patent Document 1, the wrap outer pretensioner is arranged on the side surface of the side sill that is a highly rigid member of the vehicle body in a state where the axial direction and the vehicle body front-rear direction coincide with each other. Although it is attached, the support rigidity of the wrap outer pretensioner is increased, but a relatively long installation space must be secured in the longitudinal direction of the vehicle body, and interference with other in-vehicle members such as the seat support member In some cases, it is difficult to secure this arrangement space while avoiding the above.

  In particular, in recent years, it has been desired that such a wrap outer pretensioner is mounted not only on a large vehicle but also on a small vehicle. When a wrap outer pretensioner is disposed on such a small vehicle, It is difficult to secure the installation space.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lap outer pretensioner arrangement structure that can shorten the lap outer pretensioner arrangement space as much as possible in the vehicle longitudinal direction. It is said.

In order to solve the above-described problems, a lap outer pretensioner arrangement structure according to the present invention includes a pair of left and right side sills that extend in the front-rear direction of the vehicle body and have a cross section orthogonal to the extending direction as a closed cross section, and these A seat disposed between the side sills, a lap belt for restraining the waist of the occupant seated on the seat, connected to the end of the lap belt and driven in a direction to tighten the lap belt in a predetermined case A lap outer pretensioner that is elongated in the longitudinal direction of the vehicle body and a cross member that extends in the vehicle width direction and has both ends joined to the side sill, and the lap outer pretensioner is disposed between the side sill and the seat. the axial rear end portion thereof a state of being inclined forwardly downward with respect to the longitudinal direction of the vehicle body is above the cross member And it is characterized in that it is set.

  The axial direction of the wrap outer pretensioner here refers to a direction that coincides with or substantially coincides with the direction in which the lap belt is tightened.

  According to the present invention, the lap outer pretensioner that is elongated in the front-rear direction of the vehicle body is disposed between the side sill and the seat so that the axial direction is inclined with respect to the vehicle front-rear direction. The necessary installation space in the front-rear direction can be reduced as much as possible. Therefore, for example, the lap outer pretensioner can be efficiently arranged even in a small vehicle in which the vehicle length is relatively short and it is difficult to secure a space in the longitudinal direction of the vehicle body.

  The wrap outer pretensioner further includes a cross member extending in the vehicle width direction and having both ends joined to the side sill. The wrap outer pretensioner is in a front-lowering state, and a rear end portion thereof is disposed above the cross member. Therefore, the wrap outer pretensioner can be disposed in the vicinity of the cross member, and the rigidity of the vehicle body portion on which the pretensioner is disposed can be further increased. Thereby, the support rigidity of the wrap outer pretensioner by the side sill can be further improved. Therefore, the lap belt can be more reliably supported by the wrap outer pretensioner, and the performance of the pretensioner can be maximized.

  The attachment position of the wrap outer pretensioner is not particularly limited as long as it is between the side sill and the seat, but the wrap outer pretensioner is attached to the side surface of the side sill on the passenger compartment side. It is preferable to make it incline up and down within the height range.

  If comprised in this way, since the wrap outer pretensioner is attached to the side sill which is a highly rigid member, the support rigidity of the said pretensioner can be improved. Therefore, even when an impact load is applied to the lap outer pretensioner in the event of a collision or rollover, the lap belt can be reliably supported by the lap outer pretensioner and the pretensioner Can maximize its performance. Moreover, since the wrap outer pretensioner is tilted up and down within the height range of the side sill, it does not protrude from the side sill in the height direction, and the amount of protrusion in the vehicle width direction is suppressed, resulting in dead space. The side space of the side sill can be used effectively.

The cross member may be bonded to the side sill with both end edges in the vehicle width direction being joined by welding or the like in this state, but the cross member is bonded to the side sill at both ends. a flange portion, the lap outer pretensioner is preferably attached to the joining flange portion (claim 3).

  If comprised in this way, the rigidity of the vehicle body part (side sill) by which a lap outer pretensioner is arrange | positioned by a joining flange part can further be improved, and also a wrap outer pretensioner is attached to this joining flange part, The support rigidity of the wrap outer pretensioner can be further improved.

The cross member is preferably formed so that both end portions thereof protrude at least toward the front of the vehicle body. In this case, it is preferable that the rear end portion of the wrap outer pretensioner is disposed above the protrusion portion. (Claim 4 ).

  If comprised in this way, while the rigidity of a cross member can be improved with a protrusion part, the rigidity of the periphery of the vehicle body part by which the said pretensioner is arrange | positioned by this can be improved. Therefore, as described above, the support rigidity of the wrap outer pretensioner can be improved, and the lap belt can be more firmly supported by the wrap outer pretensioner, and the performance of the pretensioner can be surely maximized. It can be made to the limit. Here, when such a protruding portion is provided, it is difficult to secure a space for arranging the wrap outer pretensioner particularly in a small vehicle, but the rear end portion of the wrap outer pretensioner is located above the protruding portion as described above. If it arrange | positions, a wrap outer pretensioner can be arrange | positioned appropriately, shortening the arrangement | positioning space in a vehicle body front-back direction as much as possible.

In this case, it is preferable that a reference hole for positioning the vehicle body is provided on the rear side of the protruding portion of the cross member by inserting a positioning pin at the time of manufacturing the line (Claim 5 ).

  That is, when manufacturing this type of vehicle, the vehicle body is generally flowed through a production line, and welding, assembly work, or the like is performed on the vehicle body flowing through this line by various robots or the like. In this way, when an automation process that automatically performs operations during line manufacturing is included, it is necessary to position the vehicle body that flows through the line. For example, this positioning is performed by using positioning pins provided on the line. This is done by inserting into a reference hole provided in a predetermined part of the vehicle body. Such a reference hole needs to be provided in a highly rigid member of the vehicle body, and the arrangement position is limited to some extent depending on the vehicle type, and the arrangement position of the cross member is determined by the position where the reference hole is provided. There is. Accordingly, by providing the cross member with the protrusion as described above and providing the reference hole in the cross member behind the protrusion, the support hole of the lap outer pretensioner is improved and the reference hole is set to an appropriate position. It can be arranged.

  According to the present invention, the necessary installation space in the front-rear direction of the vehicle body can be reduced as much as possible. For example, even in a small vehicle in which the vehicle length is relatively short and it is difficult to secure a space in the front-rear direction of the vehicle body. There is an advantage that the tensioner can be arranged efficiently.

  A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing a vehicle seat belt device including a lap outer pretensioner arranged by an arrangement structure according to the present embodiment. In the present embodiment, a driver's seat (driver's seat) 3 among the front seats will be described as an example in a vehicle having front and rear two-row seats, but it is also applicable to a vehicle having one row seat or three or more rows. Any sheet including a navigation sheet is applicable. In addition, the arrangement | positioning structure of this invention is applicable also to the sheet | seat located in the rearmost part among each sheet | seat from a viewpoint of suppressing the influence on the vehicle interior space behind the sheet | seat.

  The vehicle seat belt device includes a shoulder belt 4 that restrains the shoulder and chest of an occupant seated in a driver's seat (hereinafter referred to as “front seat”) 3, and a lap belt 5 that restrains the abdomen and waist of the occupant. , A retractor 8 (seat belt retractor) disposed in the center pillar 7 on the side of the front seat 3 for winding up the seat belt, and a seat pulled out from the retractor 8 An upper anchor 9 that supports the belt 6 on the upper side of the vehicle body, and a lap outer pretensioner 10 that supports the tip of the seat belt 6 (specifically, the lap belt 5) supported on the upper anchor 9 on the lower side of the vehicle body. (Hereinafter abbreviated as “RO pretensioner”) and between the upper anchor 9 and the RO pretensioner 10. A tongue 11 which slides along the kicking seat belt 6 consists of a three-point seat belt mechanism having a buckle 12 is fitted removably a tongue 11 provided on the left side of the front sheet 3.

  The seat belt 6 of the present embodiment is configured as a so-called continuous type in which the shoulder belt 4 and the lap belt 5 are integrally formed by a single webbing. Although the length of the lap belt 5 can be adjusted, the shoulder belt and the lap belt are each connected to the tongue, and the two belts are separated so-called separation type or lap belt only It may be. The retractor 8 is provided with a road limiter (not shown) that restricts the sudden pull-out of the shoulder belt 4. In addition to this road limiter, when a predetermined deceleration is detected, such as when a vehicle collision occurs. A pretensioner that applies a predetermined tension by winding up the seat belt 6 may be provided.

  The RO pretensioner 10 is an inflator type, and is formed in a cylindrical shape elongated in one direction. Specifically, the RO pretensioner 10 includes an igniter, an igniter, a propellant, an elongated cylinder 101 (see FIGS. 3 and 4), a piston that moves in the cylinder 101 along its longitudinal direction, and the like. The lap belt 5 is connected to the piston via a relay portion 102 (see FIGS. 3 and 4) composed of a wire or the like. Then, in response to a signal from a collision sensor (not shown) that detects a vehicle collision by detecting a predetermined deceleration, gas is generated by igniting an igniting agent. By moving the piston in the pulling direction and locking the moved piston, the lap belt can be pulled in instantaneously and locked. Further, as shown in FIGS. 3 and 4, the RO pretensioner 10 is provided with a guide roller mounting portion 103 at its tip, and a guide roller 104 is rotatably supported by the guide roller mounting portion 103. ing.

  2 to 6, the RO pretensioner 10 is formed between the front seat 3 and a pair of left and right side sills 13 extending in the front-rear direction of the vehicle body and having a cross section orthogonal to the extending direction formed as a closed cross section. Specifically, the side sill 13 is attached by mounting brackets 105 and 106 to a storage recess 18 which will be described later provided on the inner side surface (the inner surface in the vehicle width direction). 2 is a perspective view showing the arrangement structure of the RO pretensioner according to the present embodiment, FIG. 3 is a perspective view showing the details of the arrangement structure, and FIG. 4 is a side view of the arrangement structure. FIG. 5 is a cross-sectional view corresponding to the cross-sectional view taken along the line VV in FIG. 4 in a state where a cover member to be described later is attached, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG.

  As shown in FIGS. 2 and 5, the side sill 13 constituting the lower part of the vehicle body is basically a side sill outer 13a extending in the longitudinal direction of the vehicle body and a side sill inner disposed on the vehicle compartment side of the side sill outer 13a. 13b, and a cross section perpendicular to the extending direction is formed as a closed cross section 13c by the outer 13a and the inner 13b.

  The lower portions of the center pillar 7 and the rear pillar 14 are joined to the upper portion of the side sill 13, respectively. Further, the side end portions of the floor panel 15, the mounting bracket 16 for attaching the front seat 3, and the cross member 17 (third cross member) are joined to the inner side portion of the side sill 13. In the present embodiment, the mounting bracket 16 is joined to a position slightly in front of the position of the side sill 13 where the center pillar 7 is attached, and the center pillar 7 of the side sill 13 is attached. The cross member 17 is joined at a position between the above position and the position where the rear pillar 14 is attached.

  Further, the side surface (inside surface) of the side sill 13 on the passenger compartment side, specifically, the side wall on the passenger compartment side of the side sill inner 13b formed in the shape of a cross-sectional hat is outside the vehicle width direction as shown in FIGS. A storage recess 18 is formed that is recessed toward the vehicle body and extends in the longitudinal direction of the vehicle body. The storage recess 18 is formed by pressing the side wall of the side sill inner 13b between the mounting bracket 16 and the cross member 17 while the upper and lower portions in the height direction remain as shown in FIG. It is formed by being recessed in a substantially dish shape in cross section. The storage recess 18 is formed so as to expand sequentially from the bottom surface of the storage recess 18 toward the opening edge, and therefore, the upper and lower side walls in the height direction are inclined walls 181 that are inclined in a tapered shape. Further, a pretensioner mounting hole (not shown) for mounting the RO pretensioner 10 is formed in the bottom wall 182 of the storage recess 18 at the upper part in the vehicle height direction and at the rear part in the vehicle body longitudinal direction. ing.

  In this embodiment, the depth of the storage recess 18 is set to about one-fourth of the cylinder diameter orthogonal to the longitudinal direction of the RO pretensioner 10, and the depth is formed constant over the entire length. . The width of the storage recess 18 (the length in the vehicle height direction) is larger than the cylinder diameter orthogonal to the longitudinal direction of the RO pretensioner 10, and preferably larger than twice this diameter. In this embodiment, the maximum width of the storage recess 18 is about three times the cylinder diameter and is set to about half the height of the side sill 13.

  The mounting bracket 16 is formed in a substantially box shape that opens outward and downward in the vehicle width direction, and is joined to the side sill 13 and the floor panel 15 by mounting flanges 161 protruding from the opening edge. As shown in FIG. 6, a part of the mounting flange 161 is joined in the storage recess 18. Further, an attachment hole 162 for attaching the front seat 3 is formed in the substantially central portion of the upper surface wall of the attachment bracket 16. That is, the front seat 3 is attached to the vehicle body by inserting and fastening fasteners such as bolts into the attachment holes 162.

  As shown in FIG. 2, the cross member 17 extends in the vehicle width direction, and both ends are joined to the side sill 13 and the lower end is joined to the floor panel 15. Specifically, as shown in FIGS. 2 to 6, the cross member 17 includes a member main body 171 extending in the vehicle width direction, and member protrusions protruding from the vehicle body front side at both ends of the member main body 171 in the vehicle width direction. 6 (corresponding to a projecting portion), as clearly shown in FIG. 6, both end portions in the vehicle width direction of the member main body 171 are positioned in the vicinity of the storage recess 18 (more specifically, on the inner side surface of the side sill 13. The side sill portion on the rear side of the housing recess 18 is joined via the joint flange portion 171a, and the member protruding portion 172 is partly disposed in the housing recess 18 via the joint flange portions 172a and 172b. Are joined to the inner surface of the floor panel 15 and the side sill 13, respectively. That is, a part of the cross member 17 is joined to the housing recess 18 through the joint flange portion 172b at the member protruding portion 172.

  More specifically, the member main body 171 has a cross section perpendicular to the longitudinal direction formed in a hat shape, and is joined to the floor panel 15 by a joining flange portion 171a at the lower end thereof, as shown by a two-dot chain line in FIG. In addition, a rear seat 31 is attached above the upper portion. That is, the rear seat 31 is disposed so that the front end edge of the member main body 171 and the front end edge of the rear seat 31 substantially coincide with each other in plan view. In addition, a reference hole 173 into which a positioning pin for positioning the vehicle body at the time of manufacturing the line of the vehicle is provided in the upper surface wall at both longitudinal ends of the member main body 171. In other words, when manufacturing this type of vehicle, it is common for the vehicle body to flow through the production line, and welding or assembling work is performed on the vehicle body flowing through this line by various robots. If the operation includes an automation process, it is necessary to position the vehicle body flowing through the line, and a reference for inserting a positioning pin (not shown) provided on the line to perform this positioning is required. A hole 173 is provided in the upper wall of the member main body 171. Therefore, the member protrusion 172 is provided on the cross member 17 as described above, and the reference hole 173 is provided in the upper surface wall of the member main body 171 behind the protrusion 172, thereby improving the support rigidity of the RO pretensioner 10. The reference hole 173 is disposed at an appropriate position.

  On the other hand, the member projecting portion 172 is formed such that the upper surface wall is formed to be forwardly lowered and the inner side wall (the side wall on the inner side in the vehicle width direction) is inclined outward in the vehicle width direction toward the front side. A closed cross section perpendicular to the direction is tapered. Further, the member projecting portion 172 is provided with a joining flange portion 172a along the floor panel 15 at a lower end thereof, and a joining flange portion 172b along the inner side surface of the side sill 13 at an edge abutted against the side sill 13 Is provided. As shown in FIG. 5, the joint flange portion 172 b along the inner surface of the side sill 13 is formed to bend along the shape of the storage recess 18, and the position where both ends in the height direction are separated from the storage recess 18. Are joined.

  Here, the arrangement structure of the RO pretensioner 10 in the vehicle body lower structure having the above configuration will be specifically described with reference to FIGS. 3 to 6.

  The RO pretensioner 10 is disposed in the storage recess 18 of the side sill 13 substantially along the longitudinal direction of the vehicle body. That is, the RO pretensioner 10 stores a part of the side portion in the storage recess 18 of the side sill 13 and the storage recess in a state where the axial direction (longitudinal direction) is inclined with respect to the longitudinal direction of the vehicle body. 18 are attached to the bottom wall 182 via mounting brackets 105 and 106. In particular, the mounting bracket 105 that supports the cylinder 101 of the RO pretensioner 10 is wound once around the circumferential surface of the cylinder 101 as shown in FIG. Both end portions thereof are firmly attached to the overlapping portion between the joining flange portion 172b of the cross member 17 and the bottom wall 182 of the housing recess 18 by a fastener 19 such as a bolt.

  The inclined state of the RO pretensioner 10 is a front-lowering state within the range of the maximum width of the storage recess 18 of the side sill 13. The RO pretensioner 10 is disposed so that the rear end of the RO pretensioner 10 is positioned above the upper surface wall of the member projecting portion 172 of the cross member 17, and the RO pretensioner 10 is efficiently disposed in the longitudinal direction of the vehicle body. Has been. The length of the RO pretensioner 10 disposed above the member protrusion 172 is not particularly limited.

  As shown in FIG. 5, the RO pretensioner 10 disposed on the side sill 13 is made of a steel plate or a hard synthetic resin formed corresponding to the size of the storage recess 18 formed on the side sill 13 as shown in FIG. The hard cover member 20 is covered. That is, the cover member 20 is formed in a substantially U-shape formed to be larger than the width of the storage recess 18, the upper surface wall abuts the upper surface of the side sill inner 13 b, and the lower end edge thereof is lower than the storage recess 18. The side sill 13 is formed so as to be in contact with the inner side surface. The cover member 20 is fitted between the mounting bracket 16 and the cross member 17 in such a manner as to conceal the storage recess 18 so that the RO pretensioner 10 can be reliably protected. A floor trim 21 such as a floor mat is laminated on the cover member 20 and the floor panel 15 to improve its appearance.

  As described above, the RO pretensioner 10 is disposed in the foot space of the rear seat 31. According to the arrangement structure of the RO pretensioner 10 configured as described above, the RO pretensioner 10 is attached. A storage recess 18 is formed in the side sill 13, and the RO pretensioner 10 is disposed in the storage recess 18 in a state in which a part of the side is stored, so that the RO pretensioner 10 protrudes toward the vehicle compartment side. The amount can be reduced, and thereby the influence on the vehicle interior space can be suppressed as much as possible.

  In addition, the storage recess 18 is formed by recessing the inner surface of the side sill 13, and the cross member 17, particularly the member protrusion 172, is joined in the storage recess 18, so that the storage recess 18 serves as a bead. While fulfilling the role, the side sill 13 is reinforced by the cross member 17, whereby the rigidity of the side sill 13 can be dramatically improved. Since the RO pretensioner 10 is attached to the portion of the storage recess 18 of the side sill 13 where the rigidity is increased and the joining flange portion 172b of the cross member 17 is overlapped via the mounting bracket 105, the RO pretensioner 10 is attached. The support rigidity by the side sill 13 of the tensioner 10 can also be improved. Thus, even when an impact load is applied to the lap belt 5 to which the RO pretensioner 10 is connected in the event of a vehicle collision or rollover, the mounting posture of the RO pretensioner 10 is prevented by preventing the side sill 13 from being deformed. The seat belt 6 including the lap belt 5 can be reliably supported while being reliably maintained. Moreover, since the mounting posture of the RO pretensioner 10 can be reliably maintained, the performance of the pretensioner 10 can be maximized.

  Further, since the RO pretensioner 10 is disposed in a state in which its axial direction is inclined forward and downward with respect to the longitudinal direction of the vehicle body, an installation space necessary for disposing the RO pretensioner 10 is increased. It can be shortened as much as possible in the longitudinal direction of the vehicle body. Therefore, the RO pretensioner 10 can be efficiently disposed even in a small vehicle in which the vehicle length is relatively short and it is difficult to secure a space in the longitudinal direction of the vehicle body.

  In addition, the RO pretensioner 10 is disposed so as to be inclined downwardly, and the rear end portion thereof does not protrude above the cross member 17, particularly the member protruding portion 172, from the upper surface of the side sill 13. Therefore, the flexibility of the layout of the cross member 17 can be improved, and the cross member 17 is securely disposed in or around the storage recess 18 to effectively increase the rigidity of the side sill 13. Can be improved.

  The arrangement structure of the RO pretensioner described above is one embodiment according to the structure of the present invention, and the specific configuration of this structure can be appropriately changed without departing from the spirit of the present invention. is there. A modification will be described below.

  (1) In the above embodiment, the depth of the storage recess 18 provided in the side sill 13 is set so that a part of the side of the RO pretensioner 10 can be stored, but this depth is set to the RO pretensioner 10. However, it may be set to a depth that can be completely or substantially completely stowed. In the above-described embodiment, the depth of the storage recess 18 is substantially constant without changing in the longitudinal direction of the vehicle body, but may be formed so as to become shallower or deeper toward the front side or the rear side of the vehicle body. Good. In short, as long as a part of the RO pretensioner 10 can be stored in the storage recess, the specific embodiment thereof is not limited.

  (2) In the above embodiment, the RO pretensioner 10 is disposed in the storage recess 18 with its axial direction inclined forward and downward with respect to the longitudinal direction of the vehicle body. It may be tilted in the vehicle width direction or in the vehicle width direction.

  However, the installation space for the RO pretensioner 10 can be shortened in the longitudinal direction of the vehicle body by inclining the RO pretensioner 10 with respect to the longitudinal direction of the vehicle body, and can be efficiently disposed as described above. There is an advantage.

It is a perspective view which shows an example of the seatbelt apparatus containing the wrap outer pretensioner arrange | positioned by the arrangement | positioning structure which concerns on this embodiment. It is a perspective view which shows the arrangement | positioning structure of RO pretensioner which concerns on this embodiment. It is a perspective view which shows the detail of the arrangement structure. It is a side view of the arrangement structure. It is sectional drawing equivalent to the VV sectional view taken on the line in FIG. 4 in the state in which the cover member was attached. It is the VI-VI sectional view taken on the line of FIG.

3 Front seat 5 Wrap belt 6 Seat belt 10 Wrap outer pretensioner (RO pretensioner)
13 Side sill 13c Closed cross section 17 Cross member 171 Member body 172 Member protrusion (protrusion)
172b Joint flange 173 Reference hole

Claims (5)

A pair of left and right side sills extending in the front-rear direction of the vehicle body and having a cross section perpendicular to the extending direction formed as a closed cross section, a seat disposed between the side sills, and restraining a waist portion of an occupant seated on the seat A lap belt, a lap outer pretensioner that is connected to an end portion of the lap belt and is driven in a predetermined case to drive the lap belt in a predetermined direction and is elongated in the front-rear direction of the vehicle body, and both ends extend in the vehicle width direction. With a cross member joined to the side sill ,
The lap outer pretensioner, between the side sill and the seat, the rear end portion is disposed above the cross member a state of being inclined forwardly downward to the axial direction thereof relative to the longitudinal direction of the vehicle body An arrangement structure of a wrap outer pretensioner, characterized in that   The lap outer pretensioner according to claim 1, wherein the lap outer pretensioner is attached to a side surface of the side sill on the passenger compartment side and is inclined up and down within a height range of the side sill. Construction. Said cross member has a joining flange portion which is superimposed to the side sill at both ends, the lap outer pretensioner claim 1 or claim 2, wherein the attached to the joining flange portions Arrangement structure of lap outer pretensioner. It said cross member, both ends thereof are formed to protrude at least the front side of the vehicle body, of claims 1 to claim 3, characterized in that the rear end portion of the lap outer pretensioner above the protruding portion is arranged An arrangement structure of the wrap outer pretensioner according to any one of the preceding claims. The arrangement of the lap outer pretensioner according to claim 4 , wherein a reference hole for positioning the vehicle body is provided on the rear side of the protruding portion of the cross member by inserting a positioning pin during line production. Construction structure.

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