JPH0724266Y2 - Auxiliary support mechanism for plug door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an auxiliary support mechanism for a plug door device, and more specifically, it is an upper and lower mechanism due to the cantilevered support of the door when fully or almost fully opened. The present invention relates to a technique for reducing the burden of acting on the.

[Conventional technology]

As is well known, the plug door device opens and closes in the vehicle front-rear direction along the vehicle side wall outer surface in a state in which the door is once brought out of the vehicle through the opening by the operation of the upper mechanism and the lower mechanism.

As a specific example of the upper mechanism, for example, the one disclosed in Japanese Utility Model Application No. 63-151564 is configured to extend inwardly of the vehicle side wall above the opening in the vehicle front-rear direction and to be movable in the take-out / draw-in direction of the door. A guide rail and a guided member slidably engaged with the guide rail via a slide bearing or the like and movable in the vehicle front-rear direction are provided. The upper part of the door side is connected. The guide rail is suspended by a guide mechanism attached to a vehicle-side member so that the guide rail can move, and the guide rail and the guided member can move in a coordinated manner by a plurality of cylinders or the like. And a control circuit for controlling the driving unit. As the guide rail, other than the movable guide rail, there is a fixed guide rail fixedly supported by the vehicle-side member.

As the lower mechanism, a link mechanism attached to the vehicle-side member below the opening and guiding movement of the door in the take-out / pull-in direction, and a slide that is linked to the link mechanism and guides movement of the door in the vehicle front-rear direction. A mechanism having a mechanism (see, for example, Japanese Patent Application No. 1-300640), or a guide rail that is installed at least below the opening, is engaged with the lower end of the door, and is bent and formed along the movement path of the door. There are things to use.

[Problems to be solved by the device]

By the way, according to the above-mentioned conventional plug door device, since the guided member of the upper mechanism and the door move back and forth inside and outside of the vehicle side wall, the effective opening of the opening portion when the door is fully opened. In order to make the width as large as possible, it is necessary to make the connecting position between the door and the guided member as close to the door front side as possible and to make the connecting width short. Therefore, when the door is cantilevered when fully opened, a large moment acts on the connecting position between the guided member and the door due to the weight of the door, which in turn causes a large deviation in the guide rail and the cylinder of the drive unit. The problem of load acting arises. Further, in order to avoid this, the rigidity of each component of the upper mechanism or the mounting rigidity between them must be increased, which causes a new problem that the size and the weight of the component are inevitably increased. When the lower mechanism is of a type in which only the door tip side at the lower end of the door is linked to and supported by the vehicle-side member when the door is fully opened, the moment due to the weight of the door also acts on the lower mechanism. The problem as described above becomes more remarkable.

The present invention has been made in view of the above circumstances, and reduces the influence of the moment acting on the upper mechanism and the lower mechanism due to the weight of the door when fully opened, and at the time of fully opening, the lower end of the door has a door tip. It is a technical object to particularly reduce the influence of the moment with respect to a type having a lower mechanism of which only one side is linked to and supported by a vehicle side member, and further to reduce the size and weight of the device. It is what

[Means for Solving the Problems]

The specific means for achieving the above technical problems are a guide rail provided above the opening of the inner wall of the vehicle and only the door tip side of the door slidably engaged with the guide rail. Includes an upper mechanism having a guided member connected through a connecting tool, and a lower mechanism that guides the movement of the door by linking at least the vehicle-side member below the opening and the lower portion of the door. After the door is once brought out of the vehicle side wall from the fully closed position by the operation of the part, the guided member is further moved by the operation of the drive part along the guide rail in the vehicle longitudinal direction along the inside of the vehicle side wall. In a plug door device configured such that the door moves in the vehicle front-rear direction outside the vehicle side wall while moving, the guided member extends toward the door butt side, and the door is positioned more than the connecting position with the connecting tool. Locked at the hip side position And a locking member that locks and supports the locked body when the guided member reaches at least a position corresponding to the door fully opened position in the vehicle front-rear direction. is there.

[Action]

According to the above means, when the door is opened, the guided member first moves in the carry-out direction by the operation of the cylinder of the driving unit, and the door whose only door end side is connected to the guided member is located outside the vehicle. After being carried out, the guided member and the door move inward and outward with the vehicle side wall sandwiched therebetween in the opening direction in the vehicle front-rear direction by further operation of the drive unit. In this case, the guided member is on the door end side (opening direction side)
A locked body is provided at a position closer to the rear side of the door than the connection position with the door, and when the guided member reaches at least the position corresponding to the door fully open position, the vehicle is closed. Since the locked body is locked and supported by the locking member attached to the inside of the side wall, the guided member is guided by the weight of the door when the door is fully opened via the door tip side connecting portion (connecting tool). Even if a large moment is applied to this, this moment will be reliably received by the locking member via the locked body, and the influence of the moment given to the guide rail, the cylinder of the drive unit, etc. will be greatly affected. It will be reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

First, a schematic structure of the plug door device (and its auxiliary support mechanism) according to the present invention will be described. As shown in FIG.
An upper mechanism 101 is provided inside the vehicle side wall 1 above the opening 2 to move the door 3 in the pull-in direction and the vehicle front-rear direction. A lower mechanism 102 is provided for guiding movement at the lower part thereof.

The upper mechanism 101 includes an inlet / outlet cylinder 14 suspended and fixed to a mounting base 103 fixed to a vehicle-side member, and an inlet / outlet cylinder 14
Of a piston rod (to be described later) is suspended and supported via a suspension support member 104 and extends in the vehicle front-rear direction (c-d direction), and a guide plate 105 fixed to the guide plate 105 and also in the vehicle front-rear direction. Guide rail 5a extending to this guide rail 5a
And a guided member 8 which is slidably engaged with and is movable in the vehicle front-rear direction. The guided member 8 includes a lower door tip portion 8x to which a door tip end portion of the door 3 is connected and supported via a connector (door bracket) 7, and a piston rod of an opening / closing cylinder 9 fixed to the mounting base 103. Upper step door buttocks 8y whose ends are fixed to the auxiliary guide rail 13 which moves in cooperation with 9a.
And a connecting portion 8z that connects the both 8x and 8y, and these portions 8x, 8y and 8z are firmly connected. . Then, the guided roller 106b is attached to the lower end of the holding bracket 106a extended downward at the door end side end (or the connecting portion 8z) of the lower door tip portion 8x of the guided member 8 to be locked. The body 106 is fixed, and when the door 3 is in the fully open position and the piston rod 9a of the opening / closing cylinder 9 and the guided member 8 are in the state shown by the chain line, the locked body 106 is held.
A locking member 107 for locking and supporting the (guide roller 106b) on the upper surface of the guide roller 106b is fixedly provided inside the vehicle side wall 1 (see FIG. 2).

Further, the lower mechanism 102 has a link mechanism 45 for guiding the movement of the door 3 in the take-out / pull-in direction and a slide mechanism 56 for guiding the movement of the door 3 in the vehicle front-rear direction, and the door 3 is fully opened. When in the state, only the lower end portion of the door 3 on the door tip side is supported by the lower mechanism 102.

Next, the specific structure and operation of the upper mechanism 101 and the lower mechanism 102 will be described.

As shown in FIG. 3, the upper mechanism 101 includes first guide mechanisms 4 and 4 for guiding the movement of the door 3 in the take-out / draw-in direction (ab direction), and the first guide mechanisms 4 and 4. The second guide mechanism 5 is provided to guide the movement of the door 3 in the vehicle front-rear direction, that is, in the opening / closing direction (c-d direction). The first
The guide mechanism 4 is fixed to a mounting base 103 (not shown) and is arranged at an inclination angle of 45 degrees with respect to the vehicle side wall 1.
4a and a slide body 4b slidably held by the guide body 4a, and the second guide mechanism 5 is slidable on the guide plate 105 and the guide rail 5a. It is composed of a pair of held slide bearings 5b, 5b. Then, the slide plates 4b, 4b of the first guide mechanism 4, 4 are attached to the guide plate 1 of the second guide mechanism 5 via the brackets 6, 6.
05 is attached and the second guide mechanism 5
The slide bearings 5b, 5b are fixed to the lower door tip portion 8x of the guided member 8 that connects and supports the door tip side end portion of the door 3. Further, the door 3 is provided directly below the first guide mechanism 4, 4.
An opening / closing cylinder 9 extending parallel to the vehicle front-rear direction is suspended and supported by a mounting base 103 via support brackets 10, 10, and a tip fitting 11 attached to the tip of a piston rod 9a of the opening / closing cylinder 9 is attached to the tip bracket 11. Is an auxiliary guide roller
12 is supported, and the auxiliary guide roller 12 is sandwiched by an auxiliary guide rail 13 fixed to an end of the upper step end 8y of the guided member 8 on the door end side so as to be movable in and out of the vehicle. In addition, between the pair of first guide mechanisms 4 and 4, a loading / unloading cylinder 14 disposed at an inclination angle of 45 degrees with respect to the vehicle side wall 1 is fixedly supported by a mounting base 103 via a support bracket 15. The leading end of the piston rod 14a of the loading / unloading cylinder 14 is connected to the guide plate 5 (guide rail 5a) via a suspension support 104. In addition, in the same figure, the portions marked with parallel diagonal lines show the fixing points to the mounting base 103, which are not shown in the figure. Therefore, when the door 3 starts to open from the fully closed position, the open / close cylinder 9 and the in / out cylinder 14
Both of the piston rods 9a and 14a of FIG.
And are guided by the first guide mechanism 4, 4 and taken out in the direction a in FIG. Then, when the piston rod 14a of the loading / unloading cylinder 14 reaches the moving end in the carry-out direction, the door 3 is in the state shown by the reference numeral (a) in the figure and the second guide mechanism 5 is shown by the reference numeral (b) in the figure. It becomes the state shown. When the door 3 is moved out, the guided member 8 moves very little, so the roller plunger 31 of the limit valve 31 is moved.
a keeps a state of being compressed by the limit plate 32. In this way, after the door 3 reaches the moving end in the carry-out direction, only the piston rod 9a of the opening / closing cylinder 9 continues to project, so that the slide bearings 5b and 5b of the second guide mechanism 5 and the guided member. 8 moves along the guide rail 5a in the opening direction in the vehicle front-rear direction (direction c in the figure), and along with this, the door 3 also moves outside the vehicle side wall 1 in the opening direction. At this time, the limit plate 32 separates from the roller plunger 31a of the limit valve 31 to cause the roller plunger 31a to project due to the spring force, which changes the passage state of the cylinder pneumatic circuit (not shown), which causes the cylinder to move in and out. When the piston rod 14a of 14 is in a stopped state and only the piston rod 9a of the opening / closing cylinder 9 is projected to reach its projecting end, that is, at the time of reaching the fully open position in the vehicle front-rear direction, the door 3 is denoted by the same symbol in FIG. The state shown in (a ′) and the state of the second guide mechanism 5 shown in FIG. At this point, the locked body
106 (guide roller 106b) is in a state of being locked and supported by the locking member 107. When the door 3 is closed, the reverse operation is performed.

On the other hand, as shown in FIG. 4, the lower mechanism 102 has one end rotatably connected to the upper surface of the box body 40 fixed to the vehicle lower wall via support shafts 41a and 41b and is parallel to each other. The pair of link members 42a, 42b arranged and the pair of link members 42
A link mechanism 45 including a support frame 44 rotatably connected to the other ends of a and 42b via support shafts 43a and 43b is provided. A rail forming plate 46 having an L-shaped cross section that extends in the vehicle front-rear direction (c-d direction) is fixed to the support frame 44. The rail forming plate 46 has a first linear extension that extends in the vehicle front-rear direction. A first guide rail portion 47 is formed, and a second guide rail portion 48 is formed on the box body 40. The door door end side end portion is a bent portion 48a extending in the take-out direction (ab direction). Has been done. A staircase-shaped bracket 49 is fixed to the end of the door 3 on the door-end side, and a first engagement body 51 that engages with the first guide rail portion 47 is provided at a high step portion of the bracket 49. And a second engaging body 52 that engages with the second guide rail portion 48 is attached to the lower step portion. Further, a stopper member 53 having a U-shape in a plan view is fixedly provided at an end portion of the rail forming plate 46 fixed to the support frame 44 on the door-door end side, and the stopper member 53 supports the stopper member 53 when fully closed. frame
Restriction surface that restricts movement of 44 in the take-out direction (direction a)
53a is formed. Further, a linear rail body 55 extending in the vehicle front-rear direction is fixed to the door 3, and the support frame is
A slide mechanism 56 is composed of a slide block 54 fixed to an end of the rail (rail forming plate 46) on the door end side and the linear rail body 55. In this case, the slide block
54 cannot move relative to the linear rail body 55 inward and outward of the vehicle, but can move relative to the longitudinal direction of the vehicle only. Therefore, when the door 3 starts to open from the fully closed position, the second engagement body 52 attached to the bracket 49 of the door 3 moves in the take-out direction along the bent portion 48a of the second guide rail portion 48. Together with the bracket 49 of the door 3
The first engaging body 51 attached to the first moving body 51 also moves in the take-out direction, but at this time, the first engaging body 51 moves while being in contact with the first guide rail portion 47 of the rail forming plate 46. The support frame 44 to which the rail forming plate 46 is fixed is
The pair of link members 42a, 42b are moved in parallel while being rotated, in the take-out direction. Then, when the movement of the door 3 in the take-out direction is completed, that is, the second engaging body 52 along the bent portion 48a.
5 is completed, the door 3 is in the state shown by the symbol (a) in FIG. 5, and at this time, the first engaging body 51 is slightly moved in the door opening direction with respect to the first guide rail portion 47. The link members 42a and 42b are moving relative to each other and are orthogonal to the vehicle side wall 1. When the door 3 moves in the opening direction in the vehicle longitudinal direction from such a state,
The second engagement body 52 moves along the linear portion of the second guide rail portion 48, and at the same time, the first engagement body 51 also moves along the first guide rail portion 47, and the linear rail body 55 of the door 3. Is moved by being guided by the slide block 54 of the support frame 44.
Then, when the moving end in the opening direction is reached, the door 3 moves to the fifth position.
The state shown by the symbol (a ') in the figure, that is, the fully open state is obtained.

As described above, in the plug door device, when the door 3 is in the fully opened state, only the upper part of the door 3 on the door end side of the upper mechanism 101 is supported by the connecting tool 7 fixed to the guided member 8. Regarding the mechanism 102, only the lower part of the door 3 on the door tip side is supported by the slide block 54 with which the linear rail body 55 engages, and an extremely large moment due to the weight of the door 3 acts on the upper and lower mechanisms 101, 102. However, in this fully opened state, as shown in FIGS. 1 and 2, the locked body 106 fixed to the guided member 8 is fixed to the locking member 107 mounted on the vehicle side wall 1. Since it is locked and supported, the moment is reliably received by the locking member 107 through the locked body 106, and the upper and lower mechanisms 1
The burden on 01,102 will be reduced.

In the above embodiment, the lower door end portion 8x of the guided member 8 is
(Alternatively, the locked body 106 is arranged in the connecting portion 8z), but the locked body 106 may be arranged in another position of the guided member 8 closer to the rear side of the connector 7. Needless to say, therefore, in this case, the mounting position of the locking member 107 needs to be changed correspondingly. Also, the locked body 106
Also, the number of the locking members 107 attached may be plural if necessary.

Further, in the above embodiment, the present invention is applied to the guide rail 5a of the upper mechanism 101 that is movable, but the guide rail 5a is not of this type, specifically, bent along the movement path of the door. The same applies to the type in which the formed guide rail is fixedly supported by the vehicle side member and the type provided with a guide rail for moving the door once brought out of the vehicle only in the vehicle front-rear direction. is there. Also, the lower mechanism 102
Also, the structure is not limited to the structure shown in the above embodiment, and for example, a guide rail that is formed to bend along the movement path of the door is installed on the lower wall portion of the opening, and the lower end of the door is attached to this guide rail. The present invention can be similarly applied to a type in which parts are engaged.

[Effect of device]

As described above, according to the present invention, even if a very large moment acts on the guided member via the connecting tool due to the weight of the door due to the cantilevered state of the door when fully opened, At the time of full opening, the locked body installed on the door tail side of the coupling member of the guided member is locked and supported by the locking member mounted on the vehicle side wall, so that the moment is appropriately received. It has the advantage that the load acting on the upper and lower mechanisms can be reduced as much as possible.
There is an advantage that the lower mechanism is not required to be robust and the size and weight of the device can be reduced. Further, in the present invention, since the locked body and the locking member are provided inside the side wall of the vehicle, the outer side wall of the vehicle is not processed at all, and the appearance of the vehicle is not spoiled. .

[Brief description of drawings]

1 to 5 show an embodiment of the present invention.
FIG. 1 is a schematic front view of an auxiliary support mechanism of a plug door device according to the present invention as seen from the inside of a vehicle, FIG. 2 is an enlarged vertical side view taken along line II-II of FIG. 1, and FIG. 3 is an upper mechanism of the plug door device. FIG. 4, FIG. 4 and FIG. 5 are schematic plan views showing the lower mechanism of the plug door device. DESCRIPTION OF SYMBOLS 1 ... Vehicle side wall 2 ... Opening 3 ... Door 5a ... Guide rail 7 ... Connecting tool 8 ... Guided member 101 ... Upper mechanism 102 ... Lower mechanism 106 ... Locked body 106b ... Guide roller 107 ... Locking member

Claims (1)

[Scope of utility model registration request] 1. A guide rail provided above an opening of an inner wall of a vehicle, and a guided member slidably engaged with the guide rail so that only a door end side of a door is connected via a connecting tool. And a lower mechanism that guides the movement of the door by linking at least the vehicle-side member below the opening and the lower portion of the door, and the door is temporarily moved from the fully closed position to the vehicle by the operation of the drive unit. After being carried out to the outside of the side wall, the guided member moves in the vehicle front-rear direction along the guide rail in the vehicle front-rear direction by the operation of the drive unit, and the door moves outside the vehicle side wall to the vehicle. In a plug door device configured to move in the front-rear direction, the guided member is extended toward the door butt side and a locked body is provided at a door butt side position from a connecting position with the connecting tool, The guided member is at least An auxiliary supporting mechanism for a plug door device, characterized in that a locking member for locking and supporting the locked body is attached to an inner side of a vehicle side wall when a position corresponding to a fully opened position of the door in the vehicle front-rear direction is reached.