JP6344646B2 - Structure around the lower arm of sliding door for vehicles - Google Patents

Description

  The present invention relates to a lower arm peripheral structure of a vehicle sliding door, and more particularly to a structure for suppressing an increase in door clearance when a load in the vehicle width direction is applied.

  The sliding door has a wide opening with little protrusion from the vehicle body when opening and closing, and is mainly used as a side door of a vehicle. Such a side door includes a slide rail that extends to the upper and lower edges and the rear of the rear edge of the door opening, a roller that can move along the slide rail, and the rollers that are rotatable. It is suspended by a door opening so as to be slidable through a sliding mechanism composed of a supporting arm or the like.

  In a vehicle equipped with a sliding door as described above, if an excessive load is applied to the sliding door from the vehicle interior side due to a side collision or the like, a gap may be formed between the sliding body and the vehicle body. Such a gap should be kept as small as possible, and for that purpose, it is conceivable to increase the strength and rigidity of the slide rail and arm, particularly the lower arm having a large extension amount and supporting weight. There is a problem incurring an increase in weight, accompanying fuel consumption deterioration and cost increase.

JP 2006-180699 A JP 2009-102862 A JP 2013-123935 A

  The present invention has been made in view of such a state of the prior art, and its purpose is to avoid the increase in weight and cost, and the periphery of the lower arm of the sliding door for a vehicle that can suppress the gap generated during the load operation. To provide a structure.

In order to solve the above-described problems of the prior art, the present invention provides:
A door (12) for opening and closing the door opening on the side of the vehicle body, and an end extending toward the vehicle body along the lower edge of the door opening and deflected toward the center in the vehicle width direction on the door closing side A slide rail (21) extending from the lower part of the door toward the slide rail, and in the closed state of the door, is more forward in the door closing direction than the edge (19c) on the door closing side of the door opening. A lower arm (24) having a distal end portion (27, 28) positioned; and a guide roller (31) pivotally supported by the distal end portion of the lower arm so as to be changeable in direction and movable along the slide rail. a lower arm surrounding structure of the sliding door for a vehicle, the side edges of the door closing side of the lower arm (24a) is, the slide rail (21) is substantially parallel to the deflected ends of, and, of the vehicle body Case structure is in the closed state of the door, the one having a convex portion (20b) adjacent to and facing the side edge of the lower arm (24a),
In the closed state of the door, a margin amount (D2) in the vehicle front-rear direction from the tip of the lower arm to the convex portion is the distance in the vehicle width direction between the side edge of the lower arm on the door closing side and the convex portion. It is larger than (C1) .

  Since the structure around the lower arm of the vehicle sliding door according to the present invention is configured as described above, it has the following effects.

  If an excessive load is applied to the door from the side of the passenger compartment due to a side collision, the lower arm tries to move to the outside of the vehicle body due to the deformation of the slide mechanism, but the side edge of the lower arm on the door closing side is close to the side edge. The movement of the lower arm is restricted in the initial stage by contacting the convex portion of the vehicle body.

  Since the side edge on the door closing side of the lower arm is parallel to the deflected end of the slide rail, the reaction force due to contact with the convex portion causes the lower arm (guide roller) to move along the slide rail (the door No component force is generated in the opening direction), the lower arm is held in contact, and the expansion of the door gap can be suppressed.

  Since the side edge on the door closing side of the lower arm is parallel to the deflected end of the slide rail, the gap between the side edge on the door closing side of the lower arm and the convex portion may change due to sliding of the door when the door is closed. In addition, the gap can be set small, and the immediate effect and certainty of blocking the movement of the lower arm and the door can be improved.

  Since movement restriction is performed using only the shape and arrangement of the lower arm and the vehicle body skeleton structure, there is no increase in weight due to strength improvement, resulting in deterioration in fuel consumption and cost increase.

  In the present invention, it is preferable that the convex portion (20b) is located on the door opening side from a perpendicular (M1) to the deflection direction (L1) of the slide rail passing through the rotation shaft (31a) of the guide roller. Yes, even with this configuration, the reaction force due to contact with the convex portion does not generate a component force in the direction of moving the lower arm (guide roller) along the slide rail, and the lower arm is easily held in contact, This is advantageous in suppressing the expansion of the door gap.

  In the present invention, the convex portion (20b) includes the opposing surface (20b, L3) substantially parallel to the side edge (24a, L2) of the lower arm on the door closing side and the deflection direction (21, L1) of the slide rail. ). With this configuration, when the protrusions are in contact with the side edge of the lower arm on the door closing side in parallel, there is an advantage that the movement blocking force is further improved.

  In a preferred aspect of the present invention, the slider further includes a slider (28) pivotally supported at the tip of the lower arm so that the direction can be changed, and the guide roller includes a plurality of rollers (31, 32, 33), and the slider is guided so as to be movable with respect to the slide rail in a state incapable of changing its direction, and in the closed state of the door, on the edge (20c) on the door closing side of the door opening. A notch (24c) is formed on the side edge of the adjacent lower arm on the door closing side.

  According to this configuration, when the lower arm moves further after being restricted (primary restriction) by the side edge of the lower arm on the door closing side coming into contact with the convex portion of the vehicle body, On the other hand, the rotation about the pivot shaft of the slider that cannot change the direction is caused, and the notch of the lower arm engages the edge of the door opening to restrict the movement (rotation) (secondary regulation) Therefore, the lower arm can be held for a relatively long time by the two-stage movement restriction, and the expansion of the door gap can be delayed.

  As described above, according to the lower arm peripheral structure of the vehicular slide door according to the present invention, it is possible to suppress the gap of the slide door at the time of a load operation while avoiding an increase in weight and cost by a simple structure.

It is the perspective view which looked at the vehicle provided with the sliding door from the side lower side. FIG. 2 is a view in the direction of arrow A in FIG. 1 with the side sill and rail cover removed. It is a principal part perspective view which shows the slide mechanism of a lower arm. It is BB sectional drawing of FIG. It is a bottom view in the state where the side sill and rail cover which show the lower arm peripheral structure concerning the embodiment of the present invention were removed. It is a bottom view showing the first assumed displacement of the lower arm when an excessive load is applied to the sliding door from the inside. It is a bottom view which shows the 2nd assumption displacement of a lower arm when an excessive load acts on a slide door from the inside.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a vehicle 1 provided with a sliding door in which a peripheral structure of a lower arm according to the present invention is viewed from the lower side. In the figure, the vehicle 1 is a hinge type constituting a part of a side surface of a vehicle body. The front door 11 and a sliding rear door 12 (sliding door) are provided.

  The rear door 12 is provided with slide rails 21, 22, and 23 that constitute the slide mechanism 2 at the upper and lower edge portions and the rear edge intermediate portion of the door opening 120, and is slidably supported with respect to the vehicle body at these three locations. Yes. That is, the lower rail 21 that extends along the lower edge of the door opening 120, the upper rail 22 that extends along the upper edge of the door opening 120, and the middle part of the rear edge of the door opening 120 Three slide rails including a center rail 23 extending rearward, and three arms including a lower arm 24, an upper arm 25, and a center arm 26 that connect a guide roller movable along the rear rail 12 and the rear door 12. ing.

  Each of the slide rails 21, 22, and 23 is an end portion on the vehicle front side that is the door closing side, and is deflected toward the center in the vehicle width direction. After being opened to the side of the vehicle from the closed state, the vehicle is opened to the rear of the vehicle and pulled into the door opening when closed. Of each slide rail, the lower rail 21 is fixed to the lower surface of the step panel 15 disposed on the outer side in the vehicle width direction of the side member 16 forming the vehicle body skeleton structure, as shown in FIGS. A rail cover 14 that covers the slide mechanism 2 including the lower rail 21 and the lower arm 24 is provided further below the step panel 15.

  The rail cover 14 is joined to the lower surface of the step panel 15 at the vehicle width direction center side curved along the lower rail 21, and is also joined to the lower surface of the side member 16 at the front side in the vehicle longitudinal direction. On the other hand, the rail cover 14 is joined to the inside of the side sill 13 in a side sill inner 14a integrally formed on the outer side in the vehicle width direction, and the front end portion of the rail cover 14 in the vehicle front-rear direction is in the vehicle front-rear direction. A side sill portion 20a that extends, a door opening flange portion 20c adjacent to the side sill portion 20a, and a rail cover portion 20d that extends in the vehicle width direction are joined to a cover panel 20.

  The cover panel 20 forms a part of the vehicle body skeleton structure. As shown in FIGS. 2 and 5, the cover panel 20 is located between the door opening flange portion 20 c and the rail cover portion 20 d so as to be close to and opposed to the lower arm 24. A portion 20b is formed. The front side in the vehicle front-rear direction of the cover panel 20 is joined to a side body panel 19 that also has a vehicle body skeleton structure.

  The side body panel 19 is an inner panel that constitutes a pillar portion of the vehicle 1, and the lowermost portion is a side sill portion 19 a that is continuous with the side sill portion 20 a of the cover panel 20. An end portion of the rail cover portion 20 d of the cover panel 20 is joined to the lower surface of the side member 16 via the step panel 15. The left and right side members 16 are connected by a plurality of cross members 18, and a floor panel 17 is joined to the upper surfaces thereof.

  Next, the slide mechanism 2 in the lower arm 24 will be described with reference to FIGS.

  The lower arm 24 is fixed to the inner panel side of the rear door 12 with a bolt at a base end portion 24b bent upward, and extends obliquely from the base end portion 24b toward the vehicle interior side forward in the door closing direction. A hinge bracket 27 is fixed to the distal end portion with a bolt 27b. The side edges 24 a and 24 d of the lower arm 24 are formed with reinforcing flanges bent downward, and a reinforcing bead is formed at the center of the lower arm 24. Further, a notch 24c is formed on the base end side of the side edge 24a adjacent to the door opening flange 20c when the rear door 12 is closed.

  A slider 28 is pivotally supported at the tip of the hinge bracket 27 so as to be capable of changing its direction via a vertical hinge shaft 28a so as to follow the deflection of the lower rail 21. The slider 28 has a hinge shaft 28a supported through a folded piece 28d and a base 28b which are folded back from the central punched portion 28e toward the base 28b. A guide roller 31 is rotatably supported on a support shaft 31a that protrudes horizontally toward the portion 28e.

  Further, the slider 28 extends from the base 28b so as to straddle the lower rail 21 on both sides of the punched portion 28e, and guide rollers are provided on the support shafts 32a and 33a protruding upward (downward in FIG. 3) at the protruding portion 28g. 32 and 33 are pivotally supported so that the tip 28c located on the opposite side of the lower rail 21 with respect to the base 28b is bent upward (downward in FIG. 3).

  The central guide roller 31 is disposed on the center line (L1) connecting the rotation centers of the two guide rollers 32 and 33, and the center line M1 passing through the rotation center of the guide roller 31 is The guide roller 31 is disposed so as to be orthogonal to the center line (L1) at the center point P1 and through the center point P2 of the hinge shaft 28a of the slider 28. In other words, the three guide rollers 31, 32, 33 and the slider 28 are arranged symmetrically with respect to the center line M1 passing through the center point P2 of the hinge shaft 28a.

  The lower rail 21 is made of a U channel material having a uniform cross section, and the guide rollers 32 and 33 are guided between both side walls thereof, so that the moving direction of the slider 28 is restricted to the extending direction of the lower rail 21. In this case, the lower rail 21 is restricted to a state in which the direction cannot be changed. Further, as shown in FIG. 4, the guide roller 31 is guided so as to be able to run by rolling on the upper surface (inner surface) of the rail cover 14 immediately below the lower rail 21, so that the slider 28 (lower arm 24) is vertically moved. And the weight of the rear door 12 is supported.

  In the sliding mechanism 2 configured as described above, in the closed position of the rear door 12, as shown in FIG. 5, the slider 28 is located at the deflected end of the lower rail 21, and the guide rollers 32 and 33 are positioned at the lower rail 21. Thus, the slider 28 is aligned in the deflection direction L1 of the lower rail 21. Further, the distal end portion of the lower arm 24 is positioned in front of the door opening flange portions 19c and 20c, and the extending direction L2 of the side edge portion 24a is substantially parallel to the deflection direction L1 of the lower rail 21. Is formed.

  On the other hand, at the closed position of the rear door 12, the convex portion 20b of the cover panel 20 that is close to and faces the side edge 24a is substantially parallel to the extending direction L2 of the side edge 24a and the deflection direction L1 of the lower rail 21. An opposing surface (20b) is formed.

  The convex portion 20b is located at the door opening side which is the right side in FIG. 5 with respect to the center line M1 (perpendicular to the deflection direction L1 of the slide rail) passing through the rotation center of the guide roller 31 at the closed position of the rear door 12. As shown in FIG. 6, the margin amount D2 in the vehicle front-rear direction from the front end portion of the lower arm 24 to the convex portion 20b is larger than the distance C1 between the side edge portion 24a of the lower arm 24 and the convex portion 20b in the vehicle width direction. It is getting bigger. In other words, the distance C1 between the side edge portion 24a of the lower arm 24 and the convex portion 20b is preferably as small as possible within a range where the rear door 12 does not come into contact with the normal opening / closing operation.

  When a load Fw directed outward in the vehicle width acts on the rear door 12 having the slide mechanism 2 as described above, the rear door 12 jumps out of the vehicle body as indicated by a two-dot chain line 12 'in FIG. It moves like this.

  At this time, as the first behavior around the lower arm 24, the lower arm 24 (hinge bracket 27, slider 28) constituting the slide mechanism 2 and the lower rail 21 are pulled together, and the lower arm 24 is indicated by a two-dot chain line 24 'in FIG. As shown in the figure, it moves outward in the vehicle width direction, but the side edge portion 24a 'abuts against the convex portion 20b located outward in the vehicle width direction of the lower arm 24, and the movement of the lower arm 24' is restricted (primary restriction). Since the rear door 12 ′ prevents the movement from going outside the vehicle body, the expansion of the gap between the vehicle body (19) is suppressed.

  In the above, when the load Fw directed outward in the vehicle width direction is large or when a further load is applied, rotation of the lower arm 24 ′ about the hinge shaft 28 a of the slider 28 that cannot be changed in direction with respect to the lower rail 21 is caused. However, at this time, the notch 24c ′ of the lower arm 24 ′ engages with the door opening flange 20c as shown by a two-dot chain line 24c ″ in FIG. ) Is regulated (secondary regulation).

  Since the movement of the lower arm 24 is restricted for a relatively long time by the two-stage movement restriction as described above, it is advantageous in delaying the gap expansion of the rear door 12. Further, the secondary restriction by the engagement of the notch 24c is also effective when the flat part and the overlap amount D1 cannot be sufficiently secured in the convex part 20b for the primary restriction.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

1 Vehicle 2 Slide Mechanism 11 Front Door 12 Rear Door (Slide Door)
13 Side sill 14 Rail cover 14a Side sill inner 15 Step panel 16 Side member 17 Floor panel 18 Cross member 19 Side body panel 19a Side sill part 20 Cover panel 20a Side sill part 20b Protruding part 20c Door opening flange part 20d Rail cover part 21 Lower rail (slide rail) )
22 Upper rail (slide rail)
23 Center rail (slide rail)
24 Lower arm 24a Side edge portion 24b Base end portion 24c Notch portion 25 Upper arm 26 Center arm 27 Hinge bracket 28 Slider 28a Hinge shaft 28b Base portion 28c Tip portion 28d Folding piece portion 28e Punching portion 28f Vertical wall portions 31, 32, 33 Guide rollers 31a, 32a, 33a Support shaft 120 Door opening

Claims (4)

A structure around a lower arm of a vehicle sliding door,
A door for opening and closing the door opening on the side of the vehicle body; a slide rail extending along the lower edge of the door opening and extending to the vehicle body and having an end deflected toward the vehicle width direction center side on the door closing side; A lower arm that extends from the lower portion of the door toward the slide rail and has a front end portion that is positioned forward of the door opening direction in the door closing direction of the door opening portion when the door is closed. A guide roller that is pivotally supported by the tip portion of the lower arm so as to be changeable in direction and movable along the slide rail ;
The side edge of the lower arm on the door closing side is substantially parallel to the deflected end portion of the slide rail, and the frame structure of the vehicle body is on the side edge of the lower arm when the door is closed. In what has the convex part which adjoins and opposes ,
In the closed state of the door, a margin amount in the vehicle front-rear direction from the front end portion of the lower arm to the convex portion is larger than an interval in the vehicle width direction between the side edge of the lower arm on the door closing side and the convex portion. A structure around a lower arm of a sliding door for a vehicle.   The lower arm peripheral structure of a vehicle slide door according to claim 1, wherein the convex portion is located on the door opening side with respect to a perpendicular to the deflection direction of the slide rail passing through the rotation axis of the guide roller.   3. The lower arm of the sliding door for a vehicle according to claim 1, wherein the convex portion includes a side edge on the door closing side of the lower arm and a facing surface substantially parallel to a deflection direction of the slide rail. Peripheral structure. The slider further includes a slider pivotally supported at the tip of the lower arm so that the direction can be changed. The guide roller includes a plurality of rollers pivotally supported by the slider, and the slider cannot change the direction with respect to the slide rail. It is guided to be able to move in a state,
The notch part is formed in the side edge by the side of the door closing side of the said lower arm adjacent to the edge part by the side of the door closing of the said door opening part in the closed state of the said door. 2. A structure around a lower arm of a vehicle sliding door according to item 1.

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