JP2009101871A - Door opening/closing mechanism for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a downward-opening type door opening/closing mechanism for vehicle capable of opening/closing a downward-opening type door of a vehicle even in a small place difficult to secure a space outside of the vehicle. <P>SOLUTION: A downward-opening type door for opening/closing an opening 2 of a vehicle C comprises a plane member 3a formed at a width enough to seal the opening 2, a pair of right and left rollers 3b and 3b pivotally fitted to a side of the plane member 3a, and link members 3c and 3c turnably fitted to lower ends of the rollers 3b and 3b in one end thereof and turnably fitted to lower parts of a right and a left sides of the opening 2 in the other end thereof. Guide rails 4 and 4 for guiding the rollers 3b and 3b by sliding them are arranged in a right and a left parts of the opening 2. A door housing space 7 for housing the door 3 is provided inside of a cabin, and a floor board 6 is arranged in an upper part of the space 7 freely to rise. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door opening / closing mechanism arranged to be openable and closable in an opening of a vehicle, and in particular, while the door is rotated downward, a part of the door enters the floor of the vehicle interior. The present invention relates to a door opening / closing mechanism whose part is opened.

  2. Description of the Related Art Conventionally, certain types of vehicles are provided with doors so that an opening provided in communication with the outside of the vehicle interior can be opened and closed in a hinge shape. There are two types of doors: a horizontal opening type in which the axial direction of a shaft pivotally attached to the door is substantially parallel to the vehicle height direction, and a vertical opening type in which the axial direction is substantially parallel to the horizontal direction.

  In a lateral opening type door opening / closing mechanism, the door is pivotally attached to the side of the opening by an axis having an axial direction at one end in the horizontal direction. It turns to draw a circular arc orbit with the width of the door as the radius.

  The vertical opening type door opening / closing mechanism includes a lower opening type in which the door rotates downward and an upper opening type in which the door rotates upward.

  As disclosed in Patent Document 1 and Patent Document 2, the upper opening type door is generally widely used as a rear door of a one-box type, minivan type, or station wagon type vehicle. The position is pivotally attached to the upper part of the opening by an axis having an axial direction in the vehicle width direction, and the lower end of the rear door is centered on the axis and the height of the rear door is a radius when opening. The rear door is supported by dampers arranged at the left and right ends of the planar member that forms the rear door, and the opening is opened. It is comprised so that it can hold | maintain in the state which carried out.

In the conventional lower opening type rear door opening / closing mechanism 101, as shown in FIG. 6, the lower position of the rear door 103 is rotated by an axis having an axial direction in the vehicle width direction with respect to the opening 102 at the rear of the vehicle C1. At the time of opening, the upper end portion of the rear door 103 is pivoted downward so as to draw a simple arc trajectory centered on the axis and having the height of the rear door 103 as a radius.
JP 2004-338586 A Japanese Patent Application Laid-Open No. 2004-338587

  However, in the conventional lower opening type rear door opening / closing mechanism 101, as shown in FIG. 6, the locus of the upper end of the rear door 103 when the rear door 103 is opened is the axis of the rear door 103 pivotally attached in the vehicle width direction. Since the rear door 103 has an arcuate shape with the height of the rear door 103 as a radius, the amount L of the rear door 103 protrudes rearward of the vehicle C1 is large, and the space behind the vehicle C1 is narrow or the rear of the vehicle C1 is obstructed. When there is an object, there is a problem that it is difficult to open the opening 102.

  The present invention has been created in view of the above problems, and provides a vehicle lower opening type door opening / closing mechanism capable of opening and closing a lower opening type door even in a narrow place where a space cannot be secured outside the vehicle. The purpose is to do.

  In order to achieve the above object, a door opening / closing mechanism of a vehicle according to the present invention includes a substantially rectangular opening that communicates with the outside of the vehicle interior, and a door that can be opened and closed in the opening. In the door opening and closing mechanism, the opening includes guide rails extending upward from the vicinity of the lower ends of the left and right side edges, and the door is a rigid substantially rectangular planar member capable of closing the opening. A pair of rollers provided at both ends of the planar member in the width direction and slidably engaged with the guide rail and rotatably supported with the width direction as an axis, and one end in the width direction of the planar member A pair of link members that are rotatably supported about the width direction near the roller at both ends and are rotatably supported about the width direction near the guide rail at the opening at the other end. And push the door toward the outside of the vehicle. When lowering, the left and right rollers are guided by the left and right guide rails, respectively, and the link member pivotally supported by the planar member moves to the vehicle interior side while drawing an arc-shaped locus. A part of the planar member is accommodated in the vicinity of the floor portion on the vehicle interior side, and the opening of the vehicle is opened.

  The opening is set so that the width of the opening is slightly narrower than the vehicle width of the vehicle, the height of the opening is set to be equal to or less than the height of the vehicle interior of the vehicle, and the planar member has a width of the planar member. It is desirable that the width of the opening is set substantially equal to the width of the opening, and the height of the planar member is set to about half of the height in the vehicle interior of the vehicle.

  It is desirable that the roller is pivotally attached to a portion of the left and right end portions of the planar member that is substantially above the center in the height direction.

  The vehicle has a floor board that is partly or entirely arranged to be able to stand up at the edge of the opening in the passenger compartment, and a door housing space that accommodates the door in a substantially horizontal state below the floor board. May be.

  According to the present invention, when the door is opened and closed by the door opening / closing mechanism, the locus of the upper end portion of the planar member is not a circular arc protruding outside the vehicle, but a linear locus extending substantially in the vertical direction. Thus, even in a narrow place where a space cannot be secured behind the vehicle, the door can be rotated to open and close the opening.

  Further, the door is opened by providing a door accommodating space for accommodating a part or all of the interior by rotating the door and arranging a floor carpet configured to stand up as the door rotates. It can be made smooth, and luggage can be stored on the floor carpet.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 5) taking a vehicle rear door as an example. The lower opening type rear door opening / closing mechanism 1 of the vehicle C of the present embodiment is disposed at the rearmost part of the vehicle C so as to open and close an opening 2 provided in a substantially rectangular shape in communication with the outside of the vehicle interior. The present invention relates to an opening / closing mechanism for the open rear door 3. In the figure, Up, Fr, and LH represent the upper side, the front side, and the left side, respectively.

  The vehicle in the present embodiment is a so-called one-box type vehicle C as shown in FIG. 1, and the overall shape of the rear portion of the vehicle C is an end of a substantially rectangular parallelepiped. The opening 2 provided on the rear side of the vehicle C is set to a width substantially equal to the width in the vehicle width direction in the vehicle interior, and is set to a height substantially equal to the height in the vehicle interior. A rear upper door U configured to close the upper half of the opening 2 is disposed in the upper half of the opening 2. The outer width of the rear upper door U is set to be approximately equal to the width of the opening 2, and the outer height is set to about half of the height of the opening 2. It is comprised so that a half part can be opened and closed.

  As shown in FIG. 1, the lower opening type rear door opening / closing mechanism 1 includes a lower half portion of the opening 2 at the rearmost part of the vehicle C, and a lower opening type rear door 3 for opening and closing the lower half portion. Composed. As described above, the opening 2 has a width that is substantially the same as the width in the vehicle width direction in the vehicle interior, and a height that is substantially the same as the height in the vehicle interior. It is a substantially rectangular opening penetrating indoors and outdoors, and its upper half is configured to be openable and closable by a rear upper door U.

  The upper half of the opening 2 is formed in a substantially rectangular shape that is slightly longer in the vehicle width direction, the lower side is located slightly behind the vehicle C relative to the upper side, and the opening is slightly inclined in the longitudinal direction of the vehicle C. Guide rails 4, 4 extending substantially in the vertical direction along the side edges are disposed on the left and right side edges of the upper half of the opening 2. A rear door 3 for opening and closing the upper half of the opening 2 is disposed in the upper half of the opening 2.

  As shown in FIG. 1, the lower half of the opening 2 is substantially parallel to the opening surface of the lower half of the opening 2 in the closed state of the lower half of the opening 2. It arrange | positions at the lower half part of the opening part 2 so that the lower half part of the opening part 2 may be covered and closed. In the open state of the lower half of the opening 2, the rear door 3 is substantially perpendicular to the opening surface of the lower half of the opening 2 and is substantially parallel to the floor surface of the vehicle interior. Almost half of the vehicle enters the passenger compartment and is kept open.

  The rear door 3 includes a planar member 3a capable of closing the lower half of the opening 2, and a pair of left and right rollers 3b and 3b pivotally attached to appropriate portions at both ends in the vehicle width direction of the planar member 3a. A pair of left and right link members 3c having one end pivotally attached to the left and right ends of the planar member 3a in the region immediately below the rollers 3b and 3b and the other end pivotally attached to the left and right side lower edges of the opening 2. , 3c.

  The planar member 3a is a member having a substantially rectangular thickness that is long in the vehicle width direction and is set to a size and shape substantially equal to the width and height of the lower half of the opening 2. As shown in FIG. 2 and FIG. 3 (A), shafts 3d, 3d, rollers 3b, 3b extending in the vehicle width direction are disposed at both ends of the planar member 3a in the vehicle width direction, that is, at the upper peripheral portions of the left and right ends. It is pivotally mounted by 3d. The pair of left and right rollers 3b and 3b are slidably engaged with the pair of left and right guide rails 4 and 4 disposed along the side edge of the lower half of the opening 2 at the rearmost part of the vehicle C. Entered.

  As shown in FIG. 2, a pair of left and right link members 3c extending from these portions to the vicinity of the lower end of the planar member are disposed at portions slightly below the center in the height direction at the left and right ends of the planar member 3a. 3c is arranged. Each of the left and right link members 3c, 3c is made of a long plate material, and has a portion that hangs down at both left and right ends of the planar member 3a and is bent in a crank shape in the vehicle width direction. As shown in FIGS. 2 and 3B, the link member is pivotally attached to the planar member 3a so as to be freely rotatable by axial shafts 3e and 3e along the vehicle width direction. As shown in FIG. 2 and FIG. 3C, shafts 3f and 3f extending along the vehicle width direction are provided near the lower ends of the left and right link members 3c and 3c. The shaft is inserted into the shaft support holes 5 and 5 drilled in the upper side edge portion and is rotatably supported.

  In the lower opening rear door opening / closing mechanism 1 of the vehicle C of the present embodiment configured as described above, the lower opening rear door 3 closes the lower half of the opening 2 as shown in FIGS. In this state, the guide rails 4, 4 disposed on the side edge of the lower half of the opening 2 are pivotally attached to the left and right sides of the planar member 3 a constituting the rear door 3. The rollers 3b and 3b are on the upper side.

  When a force is applied from this state so as to push down the rear door 3 toward the rear of the vehicle C, the rollers 3b, 3b move downward along the guide rails 4, 4. As the rollers 3b and 3b move, the shafts 3e and 3e of the link members 3c and 3c pivotally attached to the planar member 3a become the shafts 3f and 3f of the link members 3c and 3c pivotally attached to the opening 2. As a center, it moves in an arc shape toward the vehicle interior side.

  By the operation of the rollers 3b and 3b and the link members 3c and 3c, the planar member 3a moves along a substantially linear locus in which the upper end portion thereof is slightly toward the rear of the vehicle from directly below, and the opening 2 From the state in which the lower half is covered, the plate surface of the planar member 3a becomes substantially horizontal, and the lower half of the planar member 3a enters the passenger compartment along the passenger compartment floor.

  At this time, the floor board 6 in the flat state shown in FIG. 4 that forms the floor surface of the rear space A of the rear seat S in the vehicle interior and is configured to be able to stand up, as shown in FIG. The rear door 3 enters the rear door housing space 7 at the lower part of the floor board 6 with a slight rise. As a result, the rear door 3 can open the lower half of the opening 2 while requiring little space behind the vehicle C.

  As described above, the lower opening type door opening / closing mechanism of the vehicle according to the present invention relates to a door opening / closing mechanism disposed in the lower opening type at the opening of the vehicle. It can be implemented in the form. For example, although the rear door has been described in the present embodiment, the present invention can also be applied to a vehicle door provided in another portion. Moreover, it can be applied not only to the one box type but also to vehicles other than the three box type.

It is a perspective view of the vehicle rear part which shows the structure of the door opening / closing mechanism of the vehicle which concerns on this embodiment. It is an assembly figure around the rear door which shows the composition of the door opening and closing mechanism concerning this embodiment. 2A is a cross-sectional view of part A shown in FIG. 2 with the rear door attached to the lower half of the opening, and FIG. 2B shows FIG. 2 with the rear door attached to the lower half of the opening. Sectional drawing of B part, (C) is sectional drawing of the C part shown in FIG. 2 of the state which mounted | wore the rear door with the lower half part of the opening part. It is a partial see-through perspective view showing a configuration of a floor carpet in a flat state disposed in a rear part of a vehicle interior of a vehicle according to the present embodiment. It is a partial see-through | perspective side view in the vehicle rear part which shows the opening / closing operation | movement of the rear door of this embodiment. It is a side view in the vehicle rear which shows the structure and opening / closing operation | movement of the conventional rear opening type rear door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rear door opening / closing mechanism 2 Opening part 3 Rear door 3a Planar member 3b Roller 3c Link member 3d Shaft 3e Shaft 3f Shaft 4 Guide rail 5 Shaft support hole 6 Floor board 7 Rear door accommodating space 101 Conventional rear door opening / closing mechanism 102 Opening Part 103 Rear door C Vehicle C1 Vehicle U Rear upper door S Rear seat A Rear space of rear seat S

Claims (4)

In a door opening and closing mechanism configured to have a substantially rectangular opening communicating with the outside of the vehicle interior and a door disposed in the opening so as to be freely opened and closed,
The opening includes guide rails extending upward from the vicinity of the lower ends of the left and right side edges,
The door is a rigid, substantially rectangular planar member capable of closing the opening, and is provided at both ends of the planar member in the horizontal direction so as to be slidably engaged with the guide rail and rotatably supported by the shaft. A pair of rollers, one end of which is pivotally supported around the horizontal direction at the both ends in the horizontal direction of the planar member so as to be rotatable about the horizontal direction, and the other end is directly below the guide rail at the opening. A pair of link members rotatably supported about the horizontal direction as an axis,
When the door is pushed down toward the outside of the vehicle, the left and right rollers are guided by the left and right guide rails, respectively, and accordingly, the link member moves toward the vehicle interior side. A door opening / closing mechanism for a vehicle, wherein a part of the planar member is accommodated in the vicinity of a floor on the vehicle interior side and the opening is opened. The opening is set such that the width of the opening is slightly narrower than the vehicle width of the vehicle, and the height of the opening is set equal to or less than the height of the vehicle interior of the vehicle,
In the planar member, the width of the planar member is set to be approximately equal to the width of the opening, and the height of the planar member is set to about half of the height in the vehicle interior of the vehicle. The vehicle door opening and closing mechanism according to claim 1, wherein   The door opening / closing mechanism for a vehicle according to claim 1 or 2, wherein the roller is pivotally mounted at a position approximately at or above the center in the height direction at the left and right ends of the planar member.   The vehicle has a floor board that is partly or entirely arranged to be able to stand up at the opening edge of the vehicle interior, and a rear door housing that houses the door in a substantially horizontal state at the bottom of the floor board. The vehicle door opening / closing mechanism according to any one of claims 1 to 3, further comprising a space.