JP2006199197A - Arrangement structure of lap outer pretensioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an arrangement structure of a lap outer pretensioner, restraining the influence of a cabin or the like upon the space in a vehicle as much as possible while keeping the supporting rigidity. <P>SOLUTION: This arrangement structure includes: a pair of right and left side sills 13; a lap belt 5 for constraining the waist of an occupant seated in a seat; and a lap outer pretensioner 10 connected to the end of the lap belt 5 and driven in the direction of fastening the lap belt 5 when a collision of the vehicle is detected. The lap outer pretensioner is disposed in the side on the cabin side in the side sill 13. The side sill 13 where the lap outer pretensioner 10 is disposed is provided with a housing recessed part 18 formed by recessing the side on the cabin side outward in the car width direction. At least part of the lap outer pretensioner 10 is disposed in the housing recessed part 18. <P>COPYRIGHT: (C)2006,JPO&NCIPI

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 a car collides with or is predicted to collide with this seat belt device, the seat belt is driven in the direction of tightening the seat belt using a force such as a spring or explosive. 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 a lap belt by being attached to a lower anchor and that drives the lap belt in a tightening direction in a predetermined case. Conventionally, such a wrap outer pretensioner is provided by being attached to a side surface of a side sill extending in the longitudinal direction of the vehicle body on the side of the passenger compartment, after the cover member is attached. (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, since the wrap outer pretensioner is attached to the cover member, it is attached to the side surface of the side sill that is a highly rigid member of the vehicle body. Although the support rigidity of the outer pretensioner is increased, the wrap outer pretensioner is disposed so as to protrude toward the passenger compartment, and this protruding part interferes with a vehicle-mounted member such as a seat support member, Alternatively, there is a disadvantage that the vehicle interior space is adversely affected, such as advancing into the foot space of a passenger sitting on the seat.

  In particular, in recent years, it has been desired that such a wrap outer pretensioner be mounted not only on a large vehicle but also on a small vehicle. When such a small vehicle is provided with a wrap outer pretensioner, The space is further narrowed, and in such a case, the influence of the lap outer pretensioner on the vehicle interior space such as the foot space becomes even greater than that of a large vehicle.

  The present invention has been made in view of the above circumstances, and has an arrangement structure of a wrap outer pretensioner that can suppress the influence on a vehicle interior space such as a passenger compartment as much as possible while maintaining support rigidity. It is intended to provide.

  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 have a cross section that extends in the front-rear direction of the vehicle body and that is perpendicular to the extending direction as a closed cross section, and a seat And a lap outer pretensioner connected to an end of the lap belt and driven in a direction to tighten the lap belt in a predetermined case, the lap outer pretensioner comprising at least In the arrangement structure of the wrap outer pretensioner disposed on the side surface on the passenger compartment side of one side sill, the side sill on which the wrap outer pretensioner is disposed has the side surface on the passenger compartment side outward in the vehicle width direction. A recess is formed in the recess, and a small amount of the wrap outer pretensioner is formed in the recess. And also characterized in that the part is arranged.

  According to the present invention, the side sill to which the wrap outer pretensioner is attached has a housing recess formed by recessing the side surface on the vehicle compartment side outward in the vehicle width direction, and the wrap outer pretensioner is formed in the storage recess. Since at least a part of the lap outer pretensioner is disposed, the amount of protrusion of the lap outer pretensioner toward the vehicle compartment can be reduced or eliminated, and the influence on the vehicle interior space such as the vehicle compartment can be suppressed as much as possible. be able to. In addition, since the storage recess is formed by recessing the side surface of the side sill, the strength of the side sill can be improved, and the wrap outer pretensioner is disposed in a portion where rigidity has been increased by the storage recess. Therefore, the support rigidity of the pretensioner can also be improved. Accordingly, even when an impact load is applied to the lap belt connected to the lap outer pretensioner at the time of collision or rollover, the lap belt can be firmly supported by the lap outer pretensioner and the pretensioner Can maximize its performance.

  In the present invention, the specific structure around the disposed wrap outer pretensioner is not particularly limited. For example, the cross wrap further includes a cross member extending in the vehicle width direction and having both ends joined to the side sill. It is preferable that the end of the member in the vehicle width direction is joined in the storage recess or in the vicinity of the storage recess.

  If comprised in this way, the rigidity in the storage recessed part thru | or the position near a storage recessed part can further be improved with a cross member, and, thereby, the support rigidity of a lap outer pretensioner can be improved further. Therefore, the lap belt can be supported more firmly on the wrap outer pretensioner, and the performance of the pretensioner can be maximized.

  In this case, it is preferable that both ends of the cross member protrude at least at the front side of the vehicle body, and the protrusion is joined to the housing recess.

  If comprised in this way, while the rigidity of a cross member can be improved with a protrusion part, the rigidity in the storage recessed part in a side sill can be further improved by this. Therefore, as described above, the support rigidity of the wrap outer pretensioner can be improved, and the lap outer pretensioner can support the lap belt more firmly and maximize the performance of the pretensioner. It can be demonstrated.

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

  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.

  When the cross member is further provided as described above, the cross member has a joint flange portion joined to the side surface of the side sill on the side of the passenger compartment at both ends in the vehicle width direction, and at least a part of the joint flange portion is provided. It is preferable that the side sill is disposed in the storage recess.

  If comprised in this way, the accommodation recessed part and its periphery rigidity and the support rigidity of a wrap outer pretensioner can further be improved with a joining flange part.

  In this case, the wrap outer pretensioner may be attached to the side sill at a position within the storage recess and out of the joint flange portion. It is preferable that it is attached to a joining flange part joined in the storage recess.

  If comprised in this way, the support rigidity of a wrap outer pretensioner can further be improved.

  Here, the wrap outer pretensioner disposed in the storage recess may be open in the vehicle interior or covered with a soft sheet such as a floor mat. It is preferable that the wrap outer pretensioner disposed in is covered with a hard cover member.

  If comprised in this way, since a wrap outer pretensioner is protected by a cover member, while being able to prevent this pretensioner from being damaged effectively, desired performance can be exhibited reliably.

  According to the present invention, the amount of protrusion of the lap outer pretensioner toward the vehicle compartment can be reduced or eliminated, and the influence on the vehicle compartment can be suppressed as much as possible. Moreover, the strength of the side sill can be improved by the storage recess on the side surface of the side sill, and the wrap outer pretensioner is disposed at the portion where the rigidity is increased by the storage recess, so that the support rigidity of the pretensioner is also improved. Can be improved. Accordingly, even when an impact load is applied to the lap belt connected to the lap outer pretensioner at the time of collision or rollover, the lap belt can be firmly supported by the lap outer pretensioner and the pretensioner Can maximize its performance.

  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 apparatus 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 igniting agent, a propellant, an elongated cylinder 101 (see FIGS. 3 and 4), a piston that moves in the cylinder 101, and the like. The lap belt 5 is connected via a relay unit 102 (see FIGS. 3 and 4) configured by the following. 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 extends in the front-rear direction of the vehicle body, and the inner side surface of the pair of left and right side sills 13 (the side surface on the passenger compartment side) formed with a cross section orthogonal to the extending direction as a closed cross section. More specifically, it is attached by mounting brackets 105 and 106 to a storage recess 18 described later provided on the side sill 13. 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. Specifically, the storage recess 18 is formed so that the side wall of the side sill inner 13b between the mounting bracket 16 and the cross member 17 has its upper and lower portions left as shown in FIG. The portion is formed by being recessed into a substantially dish shape in cross section by press working. 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. 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. It is joined to.

  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. Therefore, the influence on the foot space of the occupant seated on the rear seat 31 can be suppressed, and interference with other on-vehicle members 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. As a result, 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 deformation of the side sill 13 is effectively prevented to prevent the RO pretensioner 10 from being deformed. The mounting posture can be reliably maintained, and the seat belt 6 including the lap belt 5 can be reliably supported. 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, since the RO pretensioner 10 is disposed so as to be inclined downwardly, and the rear end portion thereof is disposed above the cross member 17, particularly the member protruding portion 172, the layout of the cross member 17 is determined. The degree of freedom can be improved, and the rigidity of the side sill 13 can be effectively improved by securely arranging the cross member 17 in or around the storage recess 18.

  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 arranged, and when it is inclined, it may be inclined not only in the forward direction but also in the downward 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.

Explanation of symbols

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 18 Storage recess 20 Cover member 171 Member main body 172 Member protrusion (protrusion)
172b Joint flange 173 Reference hole

Claims (7)

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 formed as a closed cross section, a lap belt that restrains the waist of the occupant seated on the seat, and an end of the lap belt A lap outer pretensioner that drives in a direction that tightens the lap belt in a predetermined case, and the lap outer pretensioner is disposed on a side surface on the passenger compartment side of at least one side sill. In
The side sill on which the wrap outer pretensioner is disposed has a side wall on the side of the passenger compartment that is recessed outward in the vehicle width direction to form a storage recess, and at least a part of the wrap outer pretensioner is formed in the storage recess. An arrangement structure of the wrap outer pretensioner, wherein:   A cross member extending in the vehicle width direction and having both ends joined to the side sill is further provided, and an end of the cross member in the vehicle width direction is joined in the storage recess or in a position near the storage recess. The arrangement structure of the wrap outer pretensioner according to claim 1.   The lap outer pretensioner arrangement structure according to claim 2, wherein the cross member is formed so that both end portions thereof protrude at least toward the front side of the vehicle body, and the protrusions are joined to the housing recess.   4. The lap outer pre according to claim 3, wherein a reference hole for positioning the vehicle body is provided in a predetermined portion of the cross member on the rear side of the protruding portion by inserting a positioning pin during line production. Tensioner arrangement structure.   The cross member has a joint flange portion to be joined to the side surface of the side sill on the side of the vehicle cabin at both ends in the vehicle width direction, and at least a part of the joint flange portion is disposed in the storage recess in the side sill. The arrangement structure of the wrap outer pretensioner according to any one of claims 2 to 4, wherein the wrap outer pretensioner is disposed.   The wrap outer pretensioner arrangement structure according to claim 5, wherein the wrap outer pretensioner is attached to a joint flange portion joined in the housing recess.   The wrap outer pretensioner according to any one of claims 1 to 6, wherein the wrap outer pretensioner disposed in the storage recess is covered with a hard cover member. Construction.

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