JP2007145091A - Vehicle body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body structure which increases strength at an engagement portion while effectively transmitting to the vehicle body a load applied to the engagement portion of a front door or a rear door at a side collision, and completely prevents the door from opening at the side collision. <P>SOLUTION: This vehicle body structure has: a door 4 opening/closing door opening portions 1, 3 formed in the vehicle B; and a support unit U slidably supporting the door in a vehicle front and rear direction, and also has: a first engagement member 13 provided on the vehicle body side; a second engagement member 12 provided at the door and engageable with the first engagement portion; and a reinforcement member 60 transmitting load applied to the second engagement member to the support unit when the first engagement member and the second engagement member are engaged with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle body structure including a sliding door that opens and closes a door opening formed in a vehicle, and particularly relates to an engaging portion with an adjacent front or rear door.

On the side surface of the vehicle, a door opening that forms an entrance is provided. Near the door opening, a front door and a rear door that open and close the door opening are mounted. These front door and rear door opening and closing methods include a pivoting opening and closing method using a hinge and a sliding method using a support unit.
Some vehicles have a center pillar between the front door and the rear door, and some vehicles do not have a center pillar for the purpose of improving boarding / exiting performance. As an example which does not have a center pillar, patent document 1 is mentioned, for example.
When the front door and the rear door are held closed by the vehicle body, in a vehicle body structure with a center pillar, a striker as an engagement member is fixed to the pillar, and a latch as an engagement member is fixed to the door panel. Further, in a vehicle body structure having no center pillar, the latch and the striker are fixed to the panel rear end portion of the front door and the panel front end portion of the rear door, respectively.

JP 2004-148024 A

  For example, in a vehicle body structure that does not have a center pillar, if there is an impact from the side of the vehicle body toward the vehicle interior, the impact load is received by the deformation of the door panel and the strength of the fastening part between the latch and striker. It tends to be impossible to effectively absorb the weight of. In addition, when the side impact load is concentrated on the engaging portion between the latch and the striker, there is a concern that the engaging portion is broken and the door is opened, so a stronger structure is desired.

  In the case of a vehicle body structure with a center pillar, the impact load at the time of a side impact is transmitted to the center pillar via a door deformation or striker, but the latch or striker is attached to the door panel. Since there is concern about the door being opened, a stronger structure is desired.

  The present invention increases the strength of the engaging portion while effectively transmitting the load on the engaging portion to the vehicle body side at the time of a side collision to the front door or the rear door, and more reliably prevents the door from being opened at the side collision Its purpose is to provide a vehicle structure that can be used.

In order to achieve the above object, a door according to claim 1 that opens and closes a door opening formed in a vehicle and a support unit that slidably supports the door in the vehicle front-rear direction are provided on the vehicle body side. A first engagement member, a second engagement member provided on the door and engageable with the first engagement portion, the first engagement member, and the second engagement member. And a reinforcing member that transmits a load applied to the second engaging member to the support unit when engaged.
According to a second aspect of the present invention, in the vehicle body structure according to the first aspect, the first engaging member and the second engaging member do not interfere with each other in a steady state, and according to the displacement of the door at the time of a side collision. The first engaging members are arranged so as to engage with the second engaging members.

According to a third aspect of the present invention, there is provided the vehicle body structure according to the first or second aspect, wherein the support unit includes a front arm and a rear arm that are pivotally supported at one end of the vehicle body so as to be pivotable horizontally. A parallel link that is pivotally supported by the rail receiving bracket horizontally and a door sliding mechanism that slidably mounts a rail member integrally coupled to the inner wall of the rear door to the rail receiving bracket, The reinforcing member is characterized in that a load applied to the second engaging member is transmitted to the rail member.
The invention according to claim 4 is the vehicle body structure according to any one of claims 1 to 3, wherein the first engagement member is provided at a front or rear door adjacent to the door in the vehicle front-rear direction. Yes.

  According to the present invention, the first engagement member provided on the vehicle body side includes a door that opens and closes a door opening formed in the vehicle, and a support unit that supports the door to be slidable in the vehicle front-rear direction. A first engagement member provided on the vehicle body side and engageable with the second engagement portion, and a second engagement member when the first engagement member and the second engagement member engage with each other And a reinforcing member that transmits the load applied to the support unit, the mounting strength of the second engaging member is increased, and the impact load applied to the second engaging member is supported via the reinforcing member during a side collision. Since it is transmitted to the unit, it is possible to reliably prevent the door from being opened at the time of a side collision.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a vehicle body structure of a vehicle B of a 4-door hatchback type without a center pillar. The vehicle B is formed with a front entrance / exit 1 and a rear entrance / exit 3 as door openings on the left and right. The front entrance / exit 1 and the rear entrance 3 are opened and closed by a front door 2 and a rear door 4. FIG. 1 shows the left side surface of the vehicle B.

  Each front door 2 is hinged at two locations on the top and bottom of the front end, and the upper lock portion i1 of the rear end, which is a rotation end, is removably locked to the roof side rail 10 using a latch and striker (not shown), and the lower lock The part i2 is removably locked to the side sill 101 using a latch and a striker (not shown).

  The rear door 4 is a swing slide door, and is supported by a swing slide unit U, which will be described later, as a support unit so as to be movable in the vehicle front-rear direction X, and a door closing position D1 for closing the rear entrance 3 and its door closing position D1. It is movably supported at a swing position D2 that protrudes further out of the vehicle and an open position D3 that moves rearward from the swing position D2. In the door closing position D1, the rear door 4 has its front end upper lock portion J1 detachably locked to the roof side rail 10 using a latch and striker (not shown), and the front end lower lock portion J2 is side sill 101 using a latch and striker (not shown). The rear end lock portion J3 is removably locked to the rear pillar 102 by using a latch and a striker (not shown) in the middle of the upper and lower ends of the rear end.

  The front doors 2 and the rear doors 4 are each formed with a weather strip (not shown) continuously attached to the outer peripheral edge so as to ensure a sealing property with the peripheral edge portions of the facing entrances 1 and 3. In this embodiment, the vehicle B has a pillarless structure. Therefore, a pair of weather strips 8 and 9 are attached to the front end vertical wall portion 7 of the rear door 4 so as to be long in the vertical direction. When the rear door 4 is held at the door closing position D1, the weather strips 8 and 9 (see FIG. 6) can be in close pressure contact with the rear end vertical wall portion 11 of the front front door 2 (vertical wall member). It is formed so as to ensure sufficient sealing performance.

  As shown in FIG. 2, the swing slide unit U that supports the rear door 4 so as to be movable in the longitudinal direction X of the vehicle has a base member 15 fixed to a mounting base 141 in the vicinity of the rear entrance 3 of the body side surface 14 as a vehicle body. The base member 15 is provided with a parallel link 16, a door sliding mechanism 17, a door load support arm 18, and an opening / closing drive mechanism 19.

The base member 15 is a U-shaped cross-section material in which an accommodation space e is formed by upper and lower flanges 151 and 152 and a vertical plate portion 153 connecting them, and the lower flange 152 is fixed to the mounting base 141.
The parallel link 16 has a function of positioning each position of the rear door 4 that swings along the movement locus. The parallel link 16 protrudes from a rail receiving bracket 24 slidably fitted to a door support rail 22 (described later) fixed to the inner panel 21 of the rear door 4 via a plurality of rollers 23, and a lower flange 152. And a front arm 31 and a rear arm 32, one end of which is pivotably supported horizontally through two vertical pins 26 at the front and rear of the mounting bracket 25. The swinging ends of the front arm 31 and the rear arm 32 are pivotally supported at two positions on the front and rear of the rail receiving bracket 24 via vertical pins 28.

  The door sliding mechanism 17 integrally couples a door support rail 22 to the inner wall of the inner panel 21 of the rear door 4, and slides on a rail receiving bracket 24 via a plurality of rollers 23 in a pair of downward rail grooves 33 of the door support rail 22. Adopted a structure that can be moved freely. The door support rail 22 has a cross-sectional shape that forms a pair of downward rail grooves 33, and is provided long in the vehicle front-rear direction X of the rear door 4. One end of the door support rail 22 is integrally coupled to the inner panel 21 via a mounting bracket 35. The mounting bracket 35 is a bent plate material shaped so as to cover the central main portion of the inner wall of the inner panel 21, and forms a door side pivot portion 37 to which a door pivot pin 36 described later is attached in the vicinity of the center of gravity of the door. The rail receiving bracket 24 is provided with a vertical roller pin 38 and a horizontal roller pin 39 projecting from the upper surface thereof. The vertical roller pin 38 has a roller 23 that can rotate in the horizontal direction, and the horizontal roller pin 39 has a roller 23 that can rotate in the vertical direction. Are pivoted respectively. Each roller 23 is fitted in a pair of downward rail grooves 33 of the door support rail 22 in a state where play is restricted so as to be rotatable. The swinging ends of the front arm 31 and the rear arm 32 are pivotally supported by vertical pins 28 at two locations on the front and rear sides of the downward wall of the rail receiving bracket 24.

  The door load support arm 18 has a pivot 42 that protrudes upward from the lower flange 152 of the base member 15, a vertical pin 43 that is supported between the center of the pivot 42 and the upper flange 151, and a vertical pin 43. A first support arm 44 whose proximal end is pivotally supported by the first support arm 44, a second support arm 46 pivotally supported by a pivot end of the first support arm 44 via a vertical pin 45, and the other end of the second support arm 46. The rear door 4 is provided with a door side pivot portion 37 that pivotally supports the position of the center of gravity of the rear door 4 via a vertically oriented door pivot pin 36.

  Here, the base member 15 pivotally supports the door load support arm 18 via the vertical pin 43, and the door side pivotal support portion 37 of the door load support arm 18 pivotally supports the rear door 4 via the vertical pin 36. Thus, the door load support arm 18 can swing with sufficient vertical rigidity, that is, the load at the center of gravity of the rear door 4 can always be transmitted to the pivot support 42 of the base member 15 and the rear door 4 moves. It functions to support the door load at any position and to regulate the tilt of the rear door 4.

  The opening / closing drive mechanism 19 is fixed to the base member 15 and the base member 15, the motor 50 disposed on the back side of the accommodation space e between the upper and lower flanges 152 of the base member 15, the winding drum 52 driven by the motor 50. As a support member having strength, a fixed pulley p1 pivotally supported by a bracket (not shown), an arm side pulley p2 pivotally supported by the front arm 31, a door side pulley p3 pivotally supported by the door support rail 22, and the like. Front and rear cable stops 47 and 48 at the front and rear ends of the door support rail 22, an open operation cable 49 connected to the front cable stops and reaching the take-up drum 52, and a close connected to the rear cable stop 48 and reaching the take-up drum 52. An operating cable 51 is provided.

  As shown by the thick solid lines in FIGS. 3A to 3C, the open operation cable 49 coupled to the front cable stopper 47 is attached to the outer surface portion of the door-side pulley p3, the inner surface portion of the arm-side pulley p2, and a bracket (not shown). Through the fixed pulley p1 and the fixed pulley after being pivotally supported, it reaches the open winding portion of the winding drum 52 (the left half of the portion indicated by the two-dot chain line in FIG. 23).

  As shown by the thick two-dot chain line in FIGS. 3A to 3C, the closing operation cable 51 coupled to the rear cable stopper 48 is not shown in the drawing, the inner surface portion of the door-side pulley p3, the outer surface portion of the arm-side pulley p2, and the like. It reaches the closed winding portion of the winding drum 52 (the right half portion of the portion indicated by the two-dot chain line in FIG. 23) through the fixed pulley p1 that is pivotally supported by the bracket.

  The take-up drum 52 driven by the motor 50 of the opening / closing drive mechanism 19 is connected to a controller 23 (not shown). When the controller 23 receives the door opening command, it outputs a lock release output to the front end upper lock portion J1, the front end lower lock portion J2 and the rear end lock portion J3 of the rear door 4, and unlocks the rear door 4 to the rear entrance 3 Let

  Further, when the controller 23 receives the door opening output based on the door opening command, the controller 23 drives the winding drum 52 to wind up the opening operation cable 49 shown by a thick solid line, and can release the closing operation cable 51 shown by a thick two-dot chain line. And At this time, the door support rail 22 (located at the rail front position P1) integrated with the rear door 4 at the door closing position D1 shown in FIGS. At this time, the front and rear arms 31 and 32 swing outwardly about the vehicle outer side rotation center points b1 and b2 around the pair of front and rear vehicle inner rotation center points a1 and a2, as shown in FIG. It is held at the door swing position D2 (the door support rail 22 is at the rail middle position P2). Further, the front cable stopper is pulled rearward by the opening operation cable 49, whereby the door support rail 22 and the rear door 4 slide rearward with respect to the rail receiving bracket 24, and the rear entrance / exit 3 is opened. ) Shown in FIG. 2) (the door support rail 22 is in the rail rear position P3). During this opening operation, the winding drum 52 winds the closed operation cable 51 indicated by a thick two-dot chain line. The rear door 4 is held at the door opening position D3 shown in FIG.

  On the other hand, when a door closing output based on a door closing command is received from a controller (not shown), the motor 50 is driven to rotate the winding drum 52 to wind up the closing operation cable 51 indicated by a thick two-dot chain line, with a thick solid line. Allows the opening actuating cable 49 shown to be released. At this time, in the door support rail 22 integrated with the rear door 4 at the door open position D3 shown in FIG. 3C, the rear cable stop 48 is drawn forward by the closing operation cable 51. Then, the door support rail 22 and the rear door 4 slide forward, and reach the door swing position D2 shown in FIG. Further, the front cable stopper 47 pulls the closing operation cable 51 forward, so that the front and rear arms 31 and 32 have the outer rotation center points b1 and b2 around the pair of front and rear rotation center points a1 and a2. It swings inward of the vehicle and reaches the door closing position D1 (the door support rail 22 is at the rail front position P1) shown in FIG.

  When the rear door 4 reaches the door closing position D1, the longitudinal direction of the front and rear arms 31 and 32 (indicated by a two-dotted line in FIG. 5) of the parallel link 16 has an inclination angle α with respect to the vehicle body longitudinal direction X-ray X of 20 ± 5. Held at °. That is, the pair of front and rear swing center points b1 and b2 on the door side is a predetermined amount L1 (see FIG. 5) with respect to the pair of front and rear inner rotation center points a1 and a2 of the parallel link 16 at the door closing position D1. It is set to be positioned outside the width direction Y. Accordingly, when the operating component immediately before reaching the door closing position D1 in the swing locus R of the front end vertical wall portion 7 of the rear door 4 is seen, it includes a component my in the vehicle width direction Y and a component mx in the vehicle longitudinal direction X. It is clear. That is, as shown in FIGS. 5 and 6, the pair of front and rear swing center points b1 and b2 on the door side is a predetermined amount L1 in the vehicle width direction with respect to the pair of front and rear vehicle inner rotation center points a1 and a2 of the parallel link 16. By adopting the layout located outside Y, the front end vertical wall portion 7 of the rear door 4 immediately before reaching the door closing position D1 can move in the vehicle longitudinal direction X by the longitudinal component mx.

  As shown in FIG. 6, the front end vertical wall portion 7 of the rear door 4 is provided with a hook 12 as a second engagement member, and the front front door 2 (vertical wall member) on the vehicle body side facing this hook 12 is provided. The rear end vertical wall portion 11 is provided with a hook engaging member 13 as a first engaging member. Here, the operation thereof will be described later, but the hook 12 is disposed with the position in the vehicle front-rear direction X deviated by a small amount dx behind the hook engaging member 13 and the position in the vehicle width direction Y deviated by a small amount dy outside the vehicle. When the rear door 4 is in the door closing position D1 in a steady state, the two doors 4 are arranged and set so as not to mesh with each other.

  As shown in FIGS. 6 and 7, the hook 12 is vertically connected to the front end of the rear door 4 via a hook reinforcement 60 as a reinforcing member connected to a door support rail 22 that is a structural member having the strength of the swing slide unit U. It is attached to the inner surface of the wall 7. The hook reinforcement 60 is L-shaped as shown in FIG. 8, and both side surfaces 60a and 60b are bent at substantially right angles. Bolt insertion holes 61 and 62 serving as attachment portions to the hook 12 and the door support rail 22 are formed in the flat surface portion 60 </ b> C of the hook reinforcement 60. The hook reinforcement 60 is fastened and fixed to the door support rail 22 by the mounting bolt 63 and the nut 64 via the inner panel 21 and fastened by the screw hole of the hook 12 and the bolt 65 via the front end vertical wall portion 7. Fixed.

  Since the front end vertical wall portion 7 of the rear door 4 is displaced in the vehicle front-rear direction X, the rear end vertical wall portion 11 of the front door 2 (vertical wall member) in front of the front end vertical wall portion 7 of the rear door 4 is provided. On the other hand, a relatively large gap t1 can be secured on the front side, and the gap t2 when reaching the inner door closing position D1 can be relatively narrowed. For this reason, a pair of inner and outer weather strips 8 and 9 that are long attached to the front end vertical wall portion 7 of the rear door 4 when held at the door closing position D1 are the rear end vertical wall portion of the front door 2 at the front. 11 can be in close pressure contact, and sufficient sealing performance can be secured. Moreover, the pair of weather strips 8 and 9 on the inner and outer sides of the front end vertical wall portion 7 of the rear door 4 have a relatively large clearance t1 on the front side with respect to the rear end vertical wall portion 11 of the front door 2. Can be prevented.

  When the controller receives a door closing signal from a position sensor (not shown), the controller issues a lock output to the front end upper lock portion J1, the front end lower lock portion J2, and the rear end lock portion J3 of the rear door 4, and the rear door 4 is moved to the rear entrance / exit 3. Will be locked.

  It is assumed that such a vehicle B is hit by a side collision. In this case, it is assumed that the front and rear doors 2 and 4 start to bend toward the inside of the vehicle. At this time, the longitudinal direction of the front and rear arms 32 of the parallel link 16 that supports the rear door 4 is maintained at an inclination angle α with respect to the vehicle body front-rear direction X of 20, and the pair of front and rear inner pivots of the parallel link 16 at the door closing position D1. A pair of front and rear swing center points b1 and b2 on the door side with respect to the center points a1 and a2 are positioned outside the vehicle width direction Y by a predetermined amount L1. For this reason, when the rear door 4 starts to be displaced toward the inside of the vehicle, the rear door 4 is displaced forward by the action of the parallel link 16, and the hook 12 of the front end vertical wall portion 7 of the rear door 4 is moved to the rear end vertical wall of the front front door 2. By approaching the hook engaging member 13 of the part 11 and absorbing the minute amount dx, the front and rear doors 4 are bent inward of the vehicle, so that the displacement of the minute amount dy in the vehicle width direction Y is also absorbed. For this reason, the hook 12 engages with the hook engaging member 13 on the front side, thereby strengthening the coupling rigidity of the front and rear doors 2 and 4 and preventing the front and rear doors 2 and 4 from opening to the inside of the vehicle. Sex is secured.

  Since the hook 12 is fastened and fixed to the rear door 4 via the hook reinforcement 60 connected to the door support rail 22, the mounting strength of the hook 12 is increased, and the hook 12 and the hook engaging member 13 are engaged in a side collision. Since the impact load applied to the engaging portion is transmitted to the door support rail 22 via the hook reinforcement 60, it is possible to more reliably prevent the rear door 4 from being opened during a side collision. In addition, since the reinforcing structure uses the constituent members of the existing swing slide unit U that supports the rear door 4 as described above, it can be dealt with by newly installing the hook reinforcement 60 or changing the shape, and is executed at low cost. be able to.

  In the above description, the longitudinal direction of the front and rear arms 31 and 32 of the parallel link 16 that supports the rear door 4 is maintained at an inclination angle α with respect to the vehicle body longitudinal direction line X, but the present invention is limited to this. Although it is not adjusted, it is adjusted to increase or decrease according to the shape of the front end vertical wall portion 7 of the rear door 4 and the rear end vertical wall portion 11 of the front door 2. By maintaining α at 20 ± 5 °, appropriate amounts of the above-mentioned trace dx and trace dy could be secured. In the above description, the front door 2 detects that the door handle is being pulled, and the controller that detects the front door 2 issues a lock release output to the rear end upper lock portion i1 and the rear end lower lock portion i2. 2 is manually released, and boarding / exiting is allowed.

  In the above-described embodiment, the center pillar-less vehicle has been described. However, the present invention is also effective in a vehicle having a center pillar. In this case, the load applied to the second engagement member can be received by the center pillar, but the load received by the center pillar can be reduced by dispersing the load in the support unit.

  In the embodiment described above, the rear door is a swing slide door. However, even if the front door is a swing slide door, both the front door and the rear door can be a swing slide door.

  In the embodiment described above, the load applied to the second engagement member is transmitted to the rail member. However, for example, a door load support arm may be used as long as the load can be transmitted.

1 is a side view showing a schematic configuration of a center pillar-less vehicle as one embodiment of the present invention. It is a schematic side view of the support unit used for the rear door of FIG. It is function explanatory drawing of the support unit used for the rear door of FIG. 1, (a) is a door closed position, (b) is a rocking | fluctuation position, (c) is a top view which each shows an open position. It is a perspective view which shows schematic structure of the support unit used for the rear door of FIG. FIG. 2 is an overall explanatory view in a plan view when a support unit used for the rear door of FIG. 1 and the rear door reach a door closed position. FIG. 3 is a partial enlarged view showing a behavior explanation in a plan view when the front end portion of the rear door in FIG. 1 reaches the rear end portion of the front door, and a mounting state of the first engagement member and the second engagement member. . It is an expansion perspective view which shows the structure of the reinforcement member which connects the hook as a 2nd engaging member to the door support rail which is a structural member of a support unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,3 Door opening part 2,2a Front door 4,4a Rear door 12 2nd engagement member provided in the rear door 13 1st engagement member provided in the front door 14 Vehicle body (floor)
DESCRIPTION OF SYMBOLS 15 Base member 16 Parallel link 17 Door sliding mechanism 19 Opening / closing drive mechanism 21 Inner wall of a rear door 22 Strengthening component (rail member)
24 Rail receiving bracket 31 Front arm 32 Rear arm 35 Mounting bracket 60 Reinforcing member B, Ba Vehicle X Vehicle longitudinal direction U Support unit

Claims (4)

In a vehicle body structure comprising a door that opens and closes a door opening formed in a vehicle, and a support unit that supports the door so as to be slidable in the vehicle front-rear direction.
A first engagement member provided on the vehicle body side, a second engagement member provided on the door and engageable with the first engagement portion, the first engagement member and the second A vehicle body structure comprising: a reinforcing member that transmits a load applied to the second engaging member to the support unit when the engaging member is engaged. The vehicle body structure according to claim 1,
The first engagement member and the second engagement member do not interfere with each other in a steady state, and the first engagement member becomes the second engagement member according to the displacement of the door at the time of a side collision. A vehicle body structure characterized by being arranged to mesh with each other. The vehicle body structure according to claim 1 or 2,
The support unit has a front arm and a rear arm that are pivotally supported at one end horizontally on the vehicle body, and pivot ends of the front and rear arms that are pivotally supported by the rail receiving bracket. A link and a door sliding mechanism that slidably mounts a rail member integrally coupled to the inner wall of the door to the rail receiving bracket;
The vehicle body structure characterized in that the reinforcing member transmits a load applied to the second engaging member to the rail member. The vehicle body structure according to any one of claims 1 to 3,
The vehicle body structure according to claim 1, wherein the first engagement member is provided at a front or rear door adjacent to the door in a vehicle front-rear direction.

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