JP3952839B2 - Vehicle seat belt device and method of assembling the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention has a slide rail for moving an anchor of a seat belt for restraining an occupant in the front-rear direction of the vehicle, and both a front end portion and a rear end portion of the slide rail are attached to a vehicle body. The present invention relates to an apparatus and an assembling method thereof.
[0002]
[Prior art]
  Conventionally, a seat belt device disclosed in Japanese Utility Model Laid-Open No. 59-131346 is provided as a slide rail for moving an anchor of a seat belt for restraining an occupant in the longitudinal direction of the vehicle.
[0003]
  That is, a slide rail in which a front curved portion curved in a substantially C shape is integrally formed at the front portion of the rail body, and a rear curved portion curved in a reverse C shape is integrally formed at the rear portion of the rail body, and this slide is provided. The rail is attached to the side sill inner using bolts or other mounting members, and the seat belt anchor is moved in the front-rear direction of the vehicle by this slide rail, so that the ability to get in and out of the rear seat and the restraint characteristic of the front seat belt are It is configured to satisfy both.
[0004]
  In this conventional structure,Since the length of the slide rail in the longitudinal direction of the vehicle is relatively short, it is not necessary to adopt a structure that particularly considers assemblability. However, like a vehicle seat belt device having a double door structure, the slide rail When using a long slide rail with the front end of the front seat located near the rear of the front seat and the rear end of the slide rail attached to the rear floor below the rear seat, there were the following problems .
[0005]
  In other words, when the front and rear ends of the slide rail are attached to the vehicle body prior to the assembly of the rear door and seat, the seat belt for restraining the front seat occupant is built into the rear door, so this rear door exists. As a result, the seat belt anchor cannot be passed through the slide rail, and if the rear door is assembled to the vehicle body before the rear seat, the rear door may be obstructed and inserted into the vehicle interior. It becomes impossible.
[0006]
  On the other hand, it is possible to assemble the rear seat and the front seat, then assemble the front and rear doors to the vehicle body, and finally attach the slide rail to the body, but the front end of this slide rail is the side sill inner or seat Because it is mounted on the bracket and the rear end of the slide rail is mounted on the rear floor below the rear seat, the mounting space on the rear mounting side of the slide rail is particularly small and the workability is extremely poor. There was a problem that obstructed.
[0007]
[Problems to be solved by the invention]
  According to the present invention, the rear mounting portion of the slide rail can be rotated in the vertical direction and the vehicle width direction (horizontal direction) with the front mounting portion being unfixed, and the rear mounting portion is disposed on the floor below the rear seat inside the side wall of the vehicle body. An object of the present invention is to provide a vehicle seat belt device that can be mounted via a rattling absorbing mechanism and can increase the degree of freedom of mounting of a slide rail and can prevent rattling after assembly. .
[0008]
  The present invention can also assemble each of these elements in a procedural manner by assembling the front and rear mounting portions of the slide rail, the rear seat, the front seat, the door and the seat belt anchor in a specific assembly order. It is an object of the present invention to provide a method for assembling a vehicle seat belt device capable of attaching a slide rail to a space-limited portion to which a seat is attached.
[0009]
[Means for Solving the Problems]
  A vehicle seat belt apparatus according to the present invention is a vehicle seat belt apparatus having a slide rail for moving an anchor of a seat belt, wherein both front and rear ends of the slide rail are attached to a vehicle body, and the rear attachment of the slide rail The part is pivotable in the vertical direction and the vehicle width direction with the front mounting part of the slide rail fixed, and is attached to the rear floor below the rear seat inside the predetermined distance from the side wall of the vehicle body via a rattle absorbing mechanism.Mounting means for attaching the rear mounting portion of the slide rail to the vehicle body, and the mounting means moves the rear mounting portion in the axial direction of the mounting means in order to rotate the rear mounting portion of the slide rail vertically and horizontally. The ratchet absorbing mechanism is provided between the mounting means and the rear mounting portion of the slide rail, and biases the rear mounting portion in the axial direction of the mounting means. Thus, it is configured to absorb the shakiness in the axial direction while allowing the rear mounting portion to rotate in the axial direction.
[0010]
  According to the above configuration, when the rear mounting portion of the slide rail is mounted on the rear floor and the front mounting portion is not yet fixed, the slide rail is supported in the vertical direction and the vehicle with the rear mounting portion as a fulcrum. Since it can be rotated in the width direction (horizontal direction), the degree of freedom in mounting the slide rail can be increased.
[0011]
  In addition, since the rear mounting portion of the slide rail is mounted on the rear floor below the rear seat via the rattling absorbing mechanism,Slide rail inIt is possible to reliably prevent rattling.
[0012]
  In one embodiment of the present invention, the front attachment portion of the slide rail is attached to a side sill in the vicinity of the upper portion of the seat bracket provided on the side sill inner to which the rear rear portion of the front seat is attached.
  According to the above configuration, it is possible to improve the mounting rigidity of the front portion of the slide rail without deteriorating the assemblability.
[0013]
  In one embodiment of the present invention, the front mounting portion of the slide rail is mounted on the upper side of the occupant detection means mounted below the front seat.
  According to the above configuration, since the front mounting portion of the slide rail is mounted on the upper side of the occupant detection means for detecting the occupant load, the assembly that does not affect the load detection performance without deteriorating the assemblability can be achieved. it can.
[0014]
  In one embodiment of the present invention, the rear mounting portion of the slide rail is mounted on the rear floor with a stepped bolt.The slide rail rear mounting portion is provided with a mounting hole, and the mounting means is smaller in diameter than the head of the stepped bolt and the head inserted through the mounting rail of the slide rail rear mounting portion. And a ratchet absorption mechanism The spring washer that constitutes is inserted into the stepped portion and is provided between the head of the stepped bolt and the rear mounting portion of the slide rail.
[0015]
  According to the above configuration, the step mounting bolt is used as the mounting means for mounting the rear mounting portion of the slide rail to the rear floor, and the spring washer is used for the rattling absorbing mechanism. Direction and vehicle width direction rotation function and after assemblySlide rail inIt is possible to ensure a stable absorption function.
[0016]
  In one embodiment of the present invention, the stepped bolt includes a washer fixed to a screw part at the lower part of the step part and a spacer having a smaller diameter than the washer provided at the upper part of the washer.
[0017]
  According to the above configuration, since the above-described spacer is provided, the existing spring washer can be effectively used and assembled with its repulsive force without causing an increase in the size of the spring washer.Slide rail inThe rattling can be absorbed with certainty.
[0018]
  In addition, the position of the rear end of the slide rail can be raised from the floor surface by the height of the spacer, making it possible to make the slide rail lean forward, and by making the spacer a small diameter, the slide rail rear end is the starting point. It can be pivoted so that the side is above the upper side of the side sill.
[0019]
  An assembly method for a vehicle seat belt apparatus according to the present invention is an assembly method for a vehicle seat belt apparatus including a slide rail for moving an anchor of the seat belt, wherein the rear mounting portion of the slide rail is connected to the slide rail. A backlash absorbing mechanism on the rear floor below the rear seat at a predetermined distance from the side wall of the vehicle body so that the front mounting portion of the vehicle can be turned upward and outward in the vehicle width direction and can be led out from the door opening to the outside of the vehicle. A rear side assembling step, an outer moving step for moving the front mounting portion of the slide rail from the door opening to the outside of the vehicle, a seat mounting step for mounting the rear seat and the front seat to the vehicle body, An inward movement process for moving the front mounting part toward the interior of the vehicle, and a door with a built-in seat belt retractor. A door assembly process for assembling the vehicle body to the vehicle body, and a front side assembly process for passing the seat belt anchor from the slide rail front mounting portion to the rail and mounting the slide rail front mounting portion to a predetermined portion on the vehicle body side. It is provided.
[0020]
  According to the above configuration, in the rear side assembly step, the front mounting portion can be rotated upward and outward in the vehicle width direction in a state where the front mounting portion of the slide rail is not yet fixed, and the door opening portion The rear mounting portion of the slide rail is assembled to the rear floor below the rear seat via a rattling absorption mechanism so that the rear mounting portion of the slide rail can be led out from the vehicle.
[0021]
  In the next outward movement process, the front mounting portion of the slide rail is moved from the door opening to the outside of the vehicle.
  In the next seat attachment process, the rear seat and the front seat are attached to the vehicle body.
[0022]
  In the next inward movement process, the front mounting portion of the slide rail once moved to the outside of the vehicle is moved to the vehicle interior side.
  In the next door assembly process, the door incorporating the seat belt retractor is assembled to the vehicle body.
[0023]
  In the next front side assembly process, after the seat belt anchor is passed through the rail from the front mounting portion of the slide rail (the front mounting portion is not fixed at this time), the front mounting portion of the slide rail is Attach it to a predetermined part on the car body side.
[0024]
  In this way, the mounting parts on the front and rear of the slide rail, the rear seat, the front seat, the door and the anchor of the seat belt are assembled in the above specific assembly order, so that each of these elements can be assembled with good procedure, The slide rail can be satisfactorily attached to a constrained space where the seat is attached.
[0025]
  In one embodiment of the present invention, the rear outside portion of the front seat is attached to a seat bracket provided on the side sill, and the front attachment portion of the slide rail is assembled to the side sill near the upper side of the seat bracket. .
  According to the said structure, since the front attachment part of a slide rail is assembled | attached to the said side sill, the improvement of the assembly rigidity can be aimed at.
[0026]
  In one embodiment of the present invention, the predetermined part on the vehicle body side is set above the occupant detection means attached below the seat.
  According to the above configuration, since the front mounting portion of the slide rail is mounted on the upper side of the occupant detection means for detecting the occupant's load, the assembly can be performed without affecting the load detection performance.
[0027]
【Example】
  An embodiment of the present invention will be described in detail with reference to the drawings.
  The drawings show a vehicle seat belt device and a method for assembling the same. First, a vehicle body structure and a door structure will be described with reference to FIGS.
[0028]
  As shown in FIGS. 1 and 3, a side door composed of a front door 2 and a rear door 3 is provided on the vehicle body side surface of the vehicle 1, and a front end portion of the front door 2 and a rear end portion of the rear door 3 are provided. Free-style structure with front door hinge 4 and rear door hinge 5 as hinges respectively,So-called,Side door with double door structure is constructed.
[0029]
  The front door 2 and the rear door 3 constituting these side doors are respectively provided with door panels 6, 7, door sashes 8, 9, and window glasses 10, 11. Side impact bars (not shown) extending in the front-rear direction of the vehicle are provided between the inner panel and the door outer panel.
[0030]
  Further, the front door 2 is provided with a door outer handle (not shown) for opening and closing the front door 2 from the outside of the vehicle and a door mirror 12 for visually recognizing the rear of the vehicle.
[0031]
  The door of the double door structure of this embodiment is,The front door 2 is preferentially opened, and the rear door 3 is configured to be allowed to open after the front door 2 is opened.
[0032]
  On the vehicle interior side of the side door mentioned above,A front seat entrance 13a and a rear seat entrance 13b are formed as door openings (side openings of the vehicle), and the front seat entrance 13a is opened and closed by the front door 2 for the rear seat. The entrance / exit 13b is opened / closed by the rear door 3, and the entrance / exit 13a, 13b is formed by a single continuous opening 13 (door opening) covered by the doors 2, 3 so as to be openable / closable. The car body is constructed.
[0033]
  As shown in FIG. 1, lock portions 14 and 15 for locking the rear door 3 with a striker on the body side are provided above and below the front portion of the rear door 3. A lock portion 17 that locks the striker 16 of the door 2 is provided.
[0034]
  On the other hand, as shown in FIGS.,A front seat 21 (that is, a front seat) is attached to the floor panel 18 via seat brackets 19 and 19 and a seat slide device 20.
  This front seat 21,A seat cushion 22, a seat back 23, and a headrest 24 are provided, and a buckle 25 is provided on the tunnel portion 18 a side of the seat cushion 22 in the front seat 21, and this buckle 25 is provided on the seat cushion 22 side via a stalk 26. It is being fixed to the floor panel 18 via the seat cushion bracket or the buckle bracket which is not illustrated.
[0035]
  A kick-up portion 27 is formed integrally or integrally with the rear portion of the floor panel 18 described above, and a seat cushion 29 of a rear seat 28 is attached to a top deck surface (upper surface) 27a of the kick-up portion 27. That is, as shown in FIG. 3, a plurality of rows of seats 21 and 28 are arranged in the front and rear of the vehicle interior 30 of the vehicle 1.
[0036]
  FIG. 2 is a partial front view showing the above-described front seat 21 and the closed rear door 3, and FIG. 4 is a partial front view showing the rear door 3 in an opened state, and a front seat occupant seated on the front seat 21. A seat belt 31 is provided.
[0037]
  The seat belt 31 is configured to be wound by a retractor 32 disposed inside a door front structure 3a having rigidity equivalent to that of the center pillar in the rear door 3.
[0038]
  A door trim 34 having an armrest 33 is integrally provided on the lower half of the rear door 3 on the passenger compartment side, while a headrest 24 of the front seat 21 is provided on the upper portion of the door front structure 3a on the passenger compartment side. A shoulder anchor 35 is attached so as to substantially correspond to the position.
[0039]
  And inside the rear door 3ofThe seat belt 31 fed from the retractor 32 is led out from the upper end of the door trim 34 into the vehicle interior of the door front structure 3a, and then supported by the shoulder anchor 35 so that the intermediate portion thereof extends to the vehicle compartment 30 side. It is configured.
[0040]
  A tongue member 36 is movably provided at the extending intermediate portion of the seat belt 31, and the extending end portion of the seat belt 31, that is, the lower end portion of the seat belt is,As shown in FIG. 3, it is connected so that it can slide in the front-back direction of the vehicle along the lower edge of the door opening 13.
  Next, the longitudinal sliding structure of the lower end portion of the seat belt 31 will be described.
[0041]
  As shown in FIGS. 2 and 3, a side sill closed section 39 having a side sill inner 37 and a side sill outer 38 on both the left and right sides of the floor panel 18 (only one is shown in the drawings) and extending in the longitudinal direction of the vehicle. A side sill 40 is provided as a vehicle body rigid member with a metal rail. A slide rail 41 made of a metal pipe or a metal round bar is provided with bolts 42 and mounting means 43 (along the height position of the upper end portion of the side sill 40. 5 to 7).
[0042]
  The anchor 44 provided at the extending end of the above-described seat belt 31 is configured to move in the vehicle front-rear direction along the slide rail 41. That is, the above-described slide rail 41 is a rail member for sliding and guiding the anchor 44 of the seat belt 31 in the front-rear direction of the vehicle.
[0043]
  5 is an enlarged view of a main part of FIG. 2, FIG. 6 is a right side view of FIG. 5, FIG. 7 is a plan view of FIG. 6, and the above-mentioned slide rail 41 is a sliding guide part 41a extending in the longitudinal direction of the vehicle. A flat front mounting portion 41f formed integrally or integrally with the front portion of the sliding guide portion 41a via a curved portion 41b curved in a substantially C shape, and the rear portion of the sliding guide portion 41a. And a flat rear mounting portion 41r formed integrally or integrally with a bent portion 41c bent in a substantially L shape.
[0044]
  Further, as shown in FIGS. 5, 6 and 7, a seat bracket 45 for attaching the rear rear portion of the front seat 21 is joined and fixed between the side sill inner 37 and the floor panel 18, and the front mounting portion of the slide rail 41 described above is fixed. 41f is configured to be attached to the side sill inner 37 in the vicinity of the upper side of the seat bracket 45.
[0045]
  That is, as shown in FIG. 5, a nut 46 is fixed by welding to the side of the closed cross-section 39 of the side sill inner 37 in advance, soMountingThe front mounting portion 41f of the slide rail 41 is attached to the side sill inner 47 by using the bolt 42 described above with the washer 47 and the spacer 48 interposed between the front portion 41f and the mounting portion 41f.
[0046]
  The above-described rear mounting portion 41r of the slide rail 41 is mounted on a kick-up portion top deck surface 27a as a rear floor below the seat cushion 29 of the rear seat 28, which is a predetermined distance inward from the side wall of the vehicle body, by using the mounting means 43.
[0047]
  That is, as shown in FIGS. 6, 8, and 9, a nut 50 is welded and fixed to the lower surface portion of the top deck surface 27 a in advance, and a bolt head portion 51, a step portion 52, and a screw portion 53 are integrally formed. A spring washer 55 as a backlash absorbing mechanism for the bolt 54, a rear mounting portion 41r (specifically, a hole portion) of the slide rail 41, a spacer 56, a fixed washer 57, and a stopper for positioning and fixing the fixed washer 57 The rear mounting portion 41r of the slide rail 41 is fixed to the rear floor by fastening the screw portion 53 of the stepped bolt 54 to the nut 50 from above with the 58 arranged in this order.
[0048]
  Here, the above-described spring washer 55 is provided between the rear mounting portion 41r and the bolt head 51 on the outer periphery of the step portion 52, and the repulsive force (biasing force) of the spring washer 55 after the slide rail 41 is assembled. It absorbs rattling.
[0049]
  Also,Compared with the washer 57 fixed to the screw part 53 at the lower part of the stepped part 52 with the stopper 58, the spacer 56 provided on the upper part of the washer 57 is formed with a small diameter. By using this spacer 56, The above-described increase in size of the spring washer 55 is avoided, and the spring washer 55, the spacer 56, the fixed washer 57, and the stopper fitting 58 are all configured to be inexpensive with existing products.
[0050]
  further,If the stepped portion 52 shown in FIG. 9 is replaced with an integral stepped bolt 54 and the stepped portion is formed by a metal collar member 59 interposed between the bolt head 51 and the spacer 56 as shown in FIG. All the parts composed of the elements 51, 53, 54, 55, 56, 57, 58, 59 can be configured with existing products at a lower cost.
[0051]
  Also slide rail41Position the rear end of the spacer56Slide rail that can be raised from the floor by the height of41Can be in a forward tilt position, and spacers56Slide rail by reducing the diameter41Starting from the rear end, the front side is side sill40It can be pivoted so as to be above the upper surface.
[0052]
  By attaching the rear mounting portion 41r of the slide rail 41 to the top deck surface 27a using the stepped bolt 54 shown in FIG. 9 or FIG. 10, the front mounting portion 41f of the slide rail 41 is not yet fixed. Below, the slide rail 41 can turn in the vertical direction and the vehicle width direction with the stepped bolt 54 as a fulcrum.
[0053]
  5, 6, and 7, the original mounting position of the slide rail 41 is indicated by a solid line A, the upwardly lifted position is indicated by a virtual line B, and is led out from the door opening 13 outward in the vehicle width direction. After that, the position moved to the stepped portion 38a of the side sill outer 38 is indicated by an imaginary line C.
[0054]
  1-4, 60 is a scarf plate made of synthetic resin, 61 is a roof panel, 62 is a roof rail, 63 is a roof side rail outer, and 64 is a roof side rail inner. In FIG. Front of the vehicle, R indicates the rear of the vehicle, and OUT indicates the outside of the vehicle.
  Further, in the drawings, only the structure on the right side of the vehicle has been described, but the structure on the left side of the vehicle is configured substantially symmetrically with that on the right side.
[0055]
  Next, a method for assembling the vehicle seat belt device will be described with reference to the process diagram shown in FIG. 11 and the explanatory diagrams (plan views) shown in FIGS. 12 to 18, in which 65 is an engine. A dash lower panel that divides the room and the vehicle compartment, 66 is a hinge pillar as a vehicle body rigid member, 67 is a tunnel reinforcement as a strength member that extends in the longitudinal direction of the vehicle along the upper portion of the tunnel portion 18a, and 68 is a dash cross member. 69 is a rear body.
[0056]
  In the rear side assembly step S1 of the process diagram shown in FIG. 11, first, the rear attachment portion 41r of the slide rail 41 is attached to the top deck surface 27a using the attachment means 43 (see FIG. 8) as shown in FIG. In this case, a non-fixed state in which the front mounting portion 41f of the slide rail 41 is not yet mounted is secured, and in this state, the front side of the slide rail 41 can be rotated in the vertical direction and the vehicle width direction outwardly, and The above-described rattling absorbing mechanism (see FIG. 8) is formed on the top deck surface 27a below the position where the rear seat 28 is attached in a later step, inside a predetermined distance from the side wall of the vehicle body so that it can be led out from the door opening 13 to the outside of the vehicle. Assembly).
[0057]
  Next, in the outward movement step S2 of the process chart shown in FIG. 11, the front mounting portion 41f is moved from the door opening 13 to the vehicle as shown by the phantom line C in FIG. Move outward (see FIG. 13). At this time, the sliding guide portion 41a of the slide rail 41 led out to the outside of the vehicle is in a low position that does not hinder the insertion of the rear seat 28 into the vehicle interior.
[0058]
  Next, in the seat attachment step S3 in the process diagram shown in FIG. 11, the rear seat 28 and the front seat 21 are inserted into the vehicle interior from the door opening 13, and these seats 28 and 21 are attached to the vehicle body (see FIG. 14). In this case, since the slide rail 41 is under the state of the imaginary line C in FIG. 5, the rear seat 28 can be smoothly inserted into the vehicle interior.
[0059]
  Next, in the inward movement step S4 of the process chart shown in FIG. 11, the front mounting portion 41f of the slide rail 41 once led out is moved to the vehicle interior side (see FIG. 15).
[0060]
  Next, in the door assembly step S5 of the process diagram shown in FIG. 11, the rear door 3 in which the retractor 32 of the seat belt 31 is built is assembled to the vehicle body as shown in FIG.
  Next, in the anchor insertion step S6 of the process chart shown in FIG. 11, the anchor 44 of the seat belt 31 is passed from the front mounting portion 41f to the sliding guide portion 41a via the curved portion 41b, and this anchor 44 is moved with respect to the slide rail 41. Are arranged so as to be slidable in the longitudinal direction of the vehicle (see FIG. 17).
[0061]
  Next, in the front side assembling step S7 of the process diagram shown in FIG. 11, the bolt 42 as a mounting member is attached to the side sill inner 37 in the vicinity of the upper portion of the seat bracket 45 as the predetermined portion on the vehicle body side. (See FIG. 17).
[0062]
  Next, as shown in FIG. 18, the front door 2 is assembled to the vehicle body.
  After completion of the series of assembly, when the rear door 3 is closed as shown by a dotted line in FIG. 1 and an imaginary line α in FIG. 3, the seat belt 31, the shoulder anchor 35, and the tongue member 36 are attached to the front seat 21. Since the seat belt 31 is pulled by the front seat occupant when the seat belt 31 is mounted, the lower end of the seat belt fixed to the anchor 44 (movable anchor, so-called slider) It moves to a front position as close as possible to the front seat 21 along the sliding guide portion 41a of 41.
[0063]
  For this reason, as shown in FIG. 2, when the engagement fitting at the tip of the tongue member 36 is engaged with the buckle 25, the front seat occupant seated on the front seat 21 can be restrained by the three-point seat belt structure.
[0064]
  On the other hand, when the front seat occupant removes the seat belt 31 and opens the rear door 3 as shown in FIG. 3 after the front door 2 is opened, the seat belt 31 is pulled rearward by the opening force of the rear door 3. The lower end portion of the seat belt 31 fixed to 44 moves rearward along the sliding guide portion 41a of the slide rail 41 as shown by a solid line in the figure, and when the rear seat occupant gets off, the foot space is reduced. It will be in the state which does not inhibit. This is the same when getting on, and the seat belt 31 does not hinder getting on and off the rear seat occupant.
[0065]
  As described above, the vehicle seat belt device of the embodiment shown in FIGS. 1 to 18 has the slide rail 41 for moving the anchor 44 of the seat belt 31, and both the front and rear ends of the slide rail 41 are attached to the vehicle body. A vehicle seat belt device, wherein a rear mounting portion 41r of the slide rail 41 is rotatable in a vertical direction and a vehicle width direction with the front mounting portion 41f of the slide rail 41 being unfixed, and is a predetermined distance from the side wall of the vehicle body. Is attached to a rear floor (see the top deck surface 27a) below the rear seat 28 via a backlash absorbing mechanism (see a spring washer 55).
[0066]
  According to this configuration, when the rear mounting portion 41r of the slide rail 41 is mounted on the rear floor and the front mounting portion 41f is not yet fixed, the slide rail 41 supports the rear mounting portion 41r as a fulcrum. Therefore, the degree of freedom in mounting the slide rail 41 can be increased.
[0067]
  In addition, since the rear mounting portion 41r of the slide rail 41 is mounted on the rear floor below the rear seat 28 via the backlash absorbing mechanism (see the spring washer 55), the slide rail 41 is moved forward as shown in FIG. It is possible to reliably prevent rattling after being assembled with a slight inclination in the low rear height.
[0068]
  The front attachment portion 41f of the slide rail 41 is attached to the side sill 40 near the upper portion of the seat bracket 45 provided on the side sill inner to which the rear portion of the front seat 21 is attached.
  According to this configuration, it is possible to improve the mounting rigidity of the front portion of the slide rail 41 without deteriorating the assemblability.
[0069]
  Further, the rear attachment portion 41r of the slide rail 41 is attached to the rear floor (see the top deck surface 27a) by a stepped bolt 54, and the rattle absorbing mechanism is provided between the bolt head portion 51 and the step portion 52. A spring washer 55 is provided.
[0070]
  According to this configuration, since the stepped bolt 54 is used as a mounting means for mounting the rear mounting portion 41r of the slide rail 41 to the rear floor, and the spring washer 55 is used for the rattling absorbing mechanism, the structure is simple. Nevertheless, it is possible to ensure a turning function in the vertical direction and the vehicle width direction and a rattling absorbing function after assembly.
[0071]
  In addition, the stepped bolt 54 includes a washer 57 fixed to the screw portion 53 below the stepped portion 52 and a spacer 56 having a smaller diameter than the washer 57 provided above the washer 57.
[0072]
  According to this configuration, by providing the spacer 56 described above, the existing spring washer 55 can be used effectively without causing an increase in the size of the spring washer 55, and the repulsive force (biasing force) can be used after assembly. The rattling can be absorbed with certainty.
[0073]
  Also slide rail41Position the rear end of the spacer56Slide rail that can be raised from the floor by the height of41Can be in a forward tilt position, and spacers56Slide rail by reducing the diameter41Starting from the rear end, the front side is side sill40It can be pivoted so as to be above the upper surface.
[0074]
  The method for assembling the vehicle seat belt apparatus according to the embodiment shown in FIGS. 11 to 18 is an assembling method of the vehicle seat belt apparatus provided with the slide rail 41 for moving the anchor 44 of the seat belt 31. The rear mounting portion 41r of the slide rail 41 is arranged so that the front mounting portion 41f of the slide rail 41 can turn upward and outward in the vehicle width direction and can be led out from the door opening 13 to the outside of the vehicle. The rear side assembly step S1 for assembling the rear floor (see the top deck surface 27a) below the rear seat 28 inside the predetermined distance from the side wall via the backlash absorbing mechanism (see the spring washer 55), and the front mounting of the slide rail 41 An outward movement step S2 of moving the portion 41f from the door opening 13 to the outside of the vehicle, and the rear seat 28 and the front seat 21 A seat attachment step S3 for attaching to the vehicle body, an inward movement step S4 for moving the front attachment portion 41f of the slide rail 41 to the vehicle interior side, and a door (see the rear door 3) in which the retractor 32 of the seat belt 31 is built-in are provided on the vehicle body. The door assembly step S5 to be assembled, the anchor 44 of the seat belt 31 is passed from the front mounting portion 41f of the slide rail 41 to the rail 41, and the front mounting portion 41f of the slide rail 41 is assembled to a predetermined portion on the vehicle body side. Assembling steps S6 and S7 are provided.
[0075]
  According to this configuration, in the rear side assembly step S1, the front mounting portion 41f can rotate upward and outward in the vehicle width direction in a state where the front mounting portion 41f of the slide rail 41 is not yet fixed. The rear mounting portion 41r of the slide rail 41 is assembled to the rear floor below the rear seat 28 via a rattling absorbing mechanism (see the spring washer 55) so that it can be led out from the door opening 13 to the vehicle exterior side.
[0076]
  In the next outward movement step S2, the front mounting portion 41f of the slide rail 41 is moved from the door opening 13 to the outside of the vehicle.
  In the next seat attachment step S3, the rear seat 28 and the front seat 21 are attached to the vehicle body.
[0077]
  In the next inward movement step S4, the front mounting portion 41f of the slide rail 41 once moved to the vehicle exterior side is moved to the vehicle interior side.
  In the next door assembly step S5, the door (see the rear door 3) in which the retractor 32 of the seat belt 31 is built is assembled to the vehicle body.
[0078]
  In the next front side assembling steps S6 and S7, the anchor 44 of the seat belt 31 is moved from the front mounting portion 41f of the slide rail 41 (at this time, the front mounting portion 41f is in an unfixed state).slideAfter passing through the rail 41, the front mounting portion 41f of the slide rail 41 is assembled to a predetermined portion on the vehicle body side.
[0079]
  As described above, the mounting portions 41f and 41r on the front and rear of the slide rail 41, the rear seat 28, the front seat 21, the door 3, and the anchor 44 of the seat belt 31 are assembled in the above-described specific assembly order. In particular, the slide rail 41 can be satisfactorily attached to a constrained space where the seats 21 and 28 are attached.
[0080]
  The rear rear portion of the front seat 21 is attached to a seat bracket 45 provided on the side sill 40, and the front attachment portion 41f of the slide rail 41 is assembled to the side sill 40 near the upper side of the seat bracket 45. .
  According to this configuration, since the front mounting portion 41f of the slide rail 41 is assembled to the side sill 40, the assembly rigidity can be improved.
[0081]
  In the above embodiment, the front mounting portion 41f of the slide rail 41 is configured to be mounted on the side sill 40. However, the assembly of the front mounting portion 41f of the slide rail 41 in step S7 shown in FIG. Since it may be configured to be mounted on the upper side of the occupant detection means 70 as shown in FIGS. 19 to 21, the following configuration will be described.
[0082]
  That is, between the seat slide device 20 of the front seat 21 and the seat bracket 19 on the floor panel 18, occupant detection means 70 for detecting the weight applied to the front seat 21 is provided as shown in FIGS. ing.
[0083]
  Here, as shown in FIG. 21, the above-described seat slide device 20 includes a lower rail 71, an upper rail 72, and a plurality of balls 73 interposed between the upper and lower rails 71, 72. Two seats are provided at the lower part of the seat and two are provided at the lower part of the passengers seat, and a total of four sets of the above-described occupant detection means 70 are provided corresponding to the seat slide device 20.
[0084]
  FIG. 22 is an exploded perspective view of the main part of one occupant detection means 70. This occupant detection means 70 has an arm 80 having a concave cross section and a load sensor 81, and detects a load of the occupant. 82, a base member 83 having a concave cross section that supports the load detection unit 82, and a load transmission member 74 that transmits a load applied to the front seat 21 to the load detection unit 82 described above.
[0085]
  The above-described base member 83 has a length approximately equal to the length of the lower rail 71 of the seat slide device 20 in the front-rear direction and extends in the front-rear direction of the vehicle. As shown in FIG. It is fixed to the panel 18.
[0086]
  In addition, a total of two sets of the load detection unit 82 and the load transmission member 74 described above are provided before and after the base member 83.
  FIG. 22 is an exploded perspective view of the rear part of the occupant detection means 70. The arm 80 and the load transmission member 74 described above are attached to the inside of the base member 83 using bolts 84 and 85 and nuts 86 and 87.
[0087]
  Further, the load transmission member 74 described above is bolted up to the lower rail 71 of the seat slide device 20 by using bolts 88, 88 shown in FIG. 20, and the occupant detecting means 70 has a rear portion of the front seat 21 as shown in FIG. To the rear end.
[0088]
  Thus, when a load is applied to the load transmission member 74 described above, the arm 80 is slightly rotated within a range of about 5 degrees at the maximum, and the action portions 80a and 80a of the arm 80 are applied to the load sensor 81. This load sensor 81 is configured to detect the weight of the occupant by taking out the mechanical strain of the action portion 80a as an electrical signal.
[0089]
  The detailed structure of the occupant detection means 70 is the same as that described in JP 2000-258233 A.
  The above-described load transmission member 74 is integrally formed with a substantially cylindrical extension 74a slanted from the rear end to the front, rear, and rear, and the front mounting portion 41f of the slide rail 41 is attached to the extension 74a. 19, 20, and 21, the front end of the slide rail 41 (see the front mounting portion 41 f) is mounted on the upper side of the occupant detection means 70 that is mounted below the front seat 21. Is.
[0090]
  As described above, since the front end of the slide rail 41 is mounted on the upper side of the occupant detection means 70 mounted below the front seat 21, the occupant detection that is not affected by the seat belt tension is applied when the seat belt 31 is mounted. Therefore, accurate weight detection by the occupant detection means 70 can be ensured.
[0091]
  By the way, if the above-mentioned slide rail is attached to the floor, when the occupant seated on the front seat wears the seat belt, the tension of the seat belt acts on the above-mentioned anchor and lap belt, and the front seat acts on the front seat. Since the tension of the seat belt acts in the floor direction in addition to the weight of the occupant, there is a possibility that the occupant detection means 70 may make an erroneous detection. However, by employing the configuration of FIGS. can do.
[0092]
  Thus, the vehicle seat belt device of the embodiment shown in FIGS. 19 to 22 is mounted on the upper side of the occupant detection means 70 in which the front mounting portion 41f of the slide rail 41 is mounted below the front seat 21. It is.
  According to this configuration, the occupant detection means for detecting the load of the occupant70Since the front mounting portion 41f of the slide rail 41 is mounted on the upper side of the slide rail 41, the assembly can be performed without affecting the load detection performance without deteriorating the assemblability.
[0093]
  In addition, the vehicle seat belt device assembling method of the embodiment shown in FIGS. 19 to 22 is arranged such that the predetermined part on the vehicle body side in the front side assembling step S7 of the process diagram shown in FIG. It is set above the occupant detection means 70 to be attached.
  According to this configuration, since the front mounting portion 41f of the slide rail 41 is attached to the lower side of the occupant detection means 70 that detects the occupant load, the assembly can be performed without affecting the load detection performance.
[0094]
  In addition, in this embodiment shown in FIGS. 9 to 22, other configurations, operations, and effects are almost the same as those in the previous embodiment. The same reference numerals are assigned and detailed description thereof is omitted.
[0095]
  In the correspondence between the configuration of the present invention and the above-described embodiment,
  The rattling absorbing mechanism of the present invention corresponds to the spring washer 55 of the embodiment,
  Similarly,
  The rear floor corresponds to the top deck surface 27a,
  The present invention is not limited to the configuration of the above-described embodiment.
【The invention's effect】
  According to the vehicle seat belt device of the present invention, the rear mounting portion of the slide rail can be rotated in the vertical direction and the vehicle width direction (horizontal direction) under the non-fixed state of the front mounting portion, and from the side wall of the vehicle body. Since it is attached to the floor below the inner rear seat via a rattling absorption mechanism, the degree of freedom of mounting the slide rail can be increased, and,After assemblySlide rail inThere is an effect of preventing rattling.
[0096]
  According to the method of assembling the vehicle seat belt device of the present invention, the mounting portions on the front and rear of the slide rail, the rear seat, the front seat, the door, and the seat belt anchors are assembled in a specific assembly order. As a result, the slide rail can be attached to a space limited portion where the seat is attached.
[Brief description of the drawings]
FIG. 1 is a side view of a vehicle provided with a seat belt device of the present invention.
FIG. 2 is a front view of the main part when the door is closed.
FIG. 3 is a side view showing movement of the seat belt when the rear door is opened.
FIG. 4 is a front view of the main part when the rear door is opened.
FIG. 5 is an enlarged view of a main part of FIG.
6 is a right side view of FIG.
7 is a plan view of FIG. 6. FIG.
FIG. 8 is an enlarged view showing a rear rail mounting structure of the slide rail.
FIG. 9 is a cross-sectional view of a stepped bolt.
FIG. 10 is a sectional view showing another embodiment of the stepped bolt.
FIG. 11 is a process diagram showing a method for assembling a vehicle seat belt device according to the present invention.
FIG. 12 is an explanatory diagram of a rear side assembly process.
FIG. 13 is an explanatory diagram of an outward movement process.
FIG. 14 is an explanatory diagram of a seat attachment process.
FIG. 15 is an explanatory diagram of an inward movement process.
FIG. 16 is an explanatory diagram of a door assembly process.
FIG. 17 is an explanatory diagram of a front side assembly process.
FIG. 18 is an explanatory diagram when assembly is completed.
FIG. 19 is a partial side view showing another embodiment of the slide rail front side mounting structure.
20 is a plan view of FIG. 19. FIG.
FIG. 21 is a rear view of FIG. 19;
FIG. 22 is an exploded perspective view of occupant detection means.
[Explanation of symbols]
  3 ... Rear door
  13 ... door opening
  21 ... Front seat
  27a ... Top deck surface (rear floor)
  28 ... Rear seat
  31 ... Seat belt
  32 ... Retractor
  37 ... Side sill inner
  40 ... side sills
  41 ... Slide rail
  41f ... Front mounting part
  42r ... Rear mounting part
  44 ... Anka
  45 ... Seat bracket
  51 ... bolt head
  52 ... Step
  53 ... Screw part
  54 ... Bolt with step
  55 ... Spring washer (shaking absorption mechanism)
  56 ... Spacer
  57 ... Washer
  70: Crew detection means
  S1 ... Rear side assembly process
  S2 ... outward movement process
  S3 ... Seat mounting process
  S4 ... Inward movement process
  S5 ... Door assembly process
  S6, S7 ... Front side assembly process

Claims (8)

It has a slide rail that moves the seat belt anchor,
A vehicle seat belt device in which front and rear ends of the slide rail are attached to a vehicle body,
A backlash absorbing mechanism is provided on the rear floor below the rear seat at a predetermined distance from the side wall of the vehicle body, and the rear mounting portion of the slide rail can be rotated in the vertical direction and the vehicle width direction when the slide rail front mounting portion is not fixed. attached through,
A mounting means for mounting the rear mounting portion of the slide rail to the vehicle body is provided,
The mounting means pivotally supports the rear mounting portion so that it can also rotate in the axial direction of the mounting means in order to rotate the rear mounting portion of the slide rail vertically and horizontally.
The rattling absorbing mechanism is provided between the mounting means and the rear mounting portion of the slide rail, and urges the rear mounting portion in the axial direction of the mounting means so as to A vehicle seat belt apparatus configured to absorb axial backlash while allowing rotation of the mounting portion . 2. The vehicle seat belt device according to claim 1, wherein the front mounting portion of the slide rail is mounted on a side sill in the vicinity of the upper portion of a seat bracket provided on a side sill inner to which a rear portion of the front seat is mounted. 2. The vehicle seat belt device according to claim 1, wherein the front mounting portion of the slide rail is mounted on an upper side of an occupant detection means mounted below the front seat. Rear mounting portion of the slide rail is constructed in so that attached to the rear floor by shoulder bolt,
A mounting hole is provided in the rear mounting portion of the slide rail,
The mounting means includes a stepped bolt head and a stepped portion having a smaller diameter than the head inserted through the mounting hole of the rear mounting portion of the slide rail,
The spring washer constituting the rattle absorbing mechanism is inserted into the stepped portion and provided at a portion between the head of the stepped bolt and the rear mounting portion of the slide rail. , 2 or 3 A vehicle seat belt device. 5. The vehicle seat belt device according to claim 4, wherein the stepped bolt includes a washer fixed to a screw portion at a lower portion of the step portion, and a spacer having a smaller diameter than the washer provided at the upper portion of the washer. A method for assembling a vehicle seat belt apparatus having a slide rail for moving an anchor of a seat belt,
The rear mounting portion of the slide rail is arranged at a predetermined distance from the side wall of the vehicle body so that the front mounting portion of the slide rail can be turned upward and outward in the vehicle width direction and can be led out from the door opening to the outside of the vehicle. A rear side assembling step for assembling to the rear floor below the rear seat via a rattle absorbing mechanism;
An outward movement step of moving the front mounting portion of the slide rail from the door opening to the outside of the vehicle;
A seat attachment process for attaching the rear seat and the front seat to the vehicle body;
An inward movement process for moving the front mounting portion of the slide rail to the vehicle interior side;
A door assembling process for assembling a door with a seat belt retractor built into the vehicle body;
A method for assembling a vehicle seat belt apparatus comprising: a front side assembling step for passing an anchor of a seat belt from the front mounting portion of the slide rail to the rail, and assembling the front mounting portion of the slide rail to a predetermined portion on the vehicle body side . The vehicle seat bell device assembly according to claim 6, wherein a rear outside portion of the front seat is attached to a seat bracket provided on a side sill, and a front attachment portion of the slide rail is attached to a side sill near the upper side of the seat bracket. Attaching method. The vehicle seat belt device assembling method according to claim 6, wherein the predetermined portion on the vehicle body side is set above an occupant detection means attached below the seat.

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