JPH0538968Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a support mechanism for a vehicle door.

[Prior art]

Developed in 1988 as a type of support mechanism for vehicle doors.
- As shown in Publication No. 60768, a support arm rotatably supports a door provided on one side of the vehicle body for opening and closing an opening provided at one side edge of the opening, and the door is attached to the vehicle body. There is a support mechanism for a vehicle door that includes a connecting link and moves the door along the outside of the vehicle body to open and close the opening by the cooperation of the support arm and the link.

[Problem that the invention attempts to solve]

In such a support mechanism, the door is opened and closed by rotating the door-side attachment part (one end) of the link about the vehicle body-side assembly part (other end) as a fulcrum. The maximum amount of protrusion corresponds to the maximum amount of protrusion of the arcuate rotation locus of one end of the link. Therefore, in order to reduce the maximum protrusion amount of the door, it is possible to lengthen the link and increase the radius of the rotation locus, but if the link is lengthened, the support rigidity for the door decreases, and the space for assembling the link is taken up. There is a possibility that it may not be possible to secure it.

Accordingly, an object of the present invention is to shorten the length of the link as compared to the conventional art to improve supporting rigidity and to facilitate securing of space for link assembly.

[Means for solving problems]

The present invention provides a vehicle door support mechanism of the type described above, in which one end of the link is rotatably assembled to the door side, and the other end is rotatably assembled to the vehicle body side and slidably in the axial direction. , and an intermediate portion of the link is movably engaged with a guide member provided on the vehicle body side, so that the link can be slid inward of the vehicle body at least at the initial stage of opening the door. It is.

[Functions and effects of the idea]

According to this configuration, when the door is opened and closed, the link rotates about the other end, which is the assembly part on the vehicle body side, as a fulcrum, but when this rotation occurs, the guide member on the vehicle body side restricts the rotation of the link and the link rotates. Gradually slide the other end toward the inside of the vehicle body. Therefore, the rotation locus of one end of the link gradually deviates inward from the arcuate locus, and the maximum amount of protrusion of the door toward the outside of the vehicle body is small. Therefore, even if the link is made shorter than a conventional link, the maximum protrusion amount can be reduced, so that the supporting rigidity for the door can be improved, and it is possible to easily secure a space for assembling the link. .

〔Example〕

The present invention will be explained below based on the drawings.
The figure shows a door supported by a support mechanism according to an embodiment of the present invention. this door 1
Reference numeral 1 denotes an entrance 12a provided on one side of the bus body 12.
The doorway 12 is opened and closed by a support arm 20a and a link mechanism 20b that constitute a support mechanism.
It is supported by the rear inner edge 12b of a.

The support arm 20a has a pair of upper and lower arm portions 21.
a, 21b, and a pair of connecting pipes 22a, 22b connecting these, both arm portions 21
One ends of a and 21b are rotatably attached to the middle part of the door 11, and both upper and lower ends of the inner connecting pipe 22a are rotatably attached to upper and lower brackets 23a and 23b provided on the inner edge 12b of the vehicle body 12. It is assembled into.

The link mechanism 20b is composed of a link 24 and a guide rail 25, as shown in FIGS. 1 and 2. One end of the link 24 is rotatably attached to the lower front end of the door 11, and the other end is attached to the ingress/egress step 12.
It is rotatably and slidably assembled in the axial direction to a bracket 26 fixed to the lower surface of the bracket c. On the other hand, in the guide rail 25, the getting on/off step 12c
The roller 27 is fixedly attached to the lower surface of the link 24 and extends rearward and outward at an angle, and a roller 27 that is rotatably assembled to the intermediate portion of the link 24 is fitted into and engaged with the link 24 . The guide rail 25 is connected to the bracket 2 as shown in FIG.
6 and extends substantially parallel to a tangent A3 passing through a point A2 at the substantially center of an arc A1 whose radius is the length of the link 24.

In the support mechanism having such a configuration, the door 11 is opened and closed as shown in FIG. 2 by the cooperative action of the support arm 20a and the link mechanism 20b. In the figure, the solid line indicates the state where the door 12a is closed by the door 11, and when the door 11 is pushed diagonally backward in this state, the door 11 rotates to the state shown by the two-dot chain line and the door 12a is closed. 12a is opened. During this rotation, one end of both arm portions 21a, 21b moves on an arcuate trajectory B1 centered on the connecting pipe 22a, and one end of the link 24 moves on a trajectory B2 centered on the bracket 26. When the link 24 rotates, the guide rail 25 and roller 27 restrict the rotation of the link 24 and cause the link 24 to slide toward the inside of the vehicle relative to the bracket 26, so that the trajectory B2 is centered on the bracket 26. Arc shape A1
As a result, the maximum amount of door 11 protruding outward from the vehicle body becomes smaller.

By the way, in this embodiment, the rotation locus of one end of the link 24 is set to be the locus B2, but if this locus B2 is to be set using only the link as in the conventional case, the same link can be set as shown in FIG. It is necessary to make it very long as shown by the dashed line C. In other words, the link 24 can be made shorter than the link C in this embodiment. This makes it possible to improve the support rigidity for the door 11 and to easily secure a space for assembling the link.

FIG. 3 shows a modified example of the link mechanism, and in the link mechanism 20c of this modified example, the means for assembling the link 24 to the vehicle body side is different from the above embodiment. That is, a second roller 28 is rotatably attached to the other end of the link 24, and this roller 28 is fitted into and engaged with a second guide rail 29 fixed to the lower surface of the getting-on/off step 12c. ing. Thereby, the link 24 is attached to the vehicle body so as to be rotatable and slidable in the axial direction. Note that the other configurations are the same as those of the above embodiment, and the same effects are achieved.

A modified example of the support arm 20d is shown in FIG. It is configured as shown. In the support arm 20d having such a configuration, when the support arm 20d rotates, the third arm portion 21c and the connecting pipe 22c
By rotating each second arm part 21e with respect to each first arm part 21d, the distance D connecting the connecting pipe 22d, which is the center of rotation, and one end of the second arm part 21e is gradually shortened. This is what we are trying to do. Therefore, in this modification, the maximum protrusion amount of the door 11 is reduced also by the action of the support arm 20d. As for the link mechanism, the same link mechanism 20b as in the above embodiment is employed, and the same effects as in the embodiment are achieved.

In addition, in this invention, the guide rail which is a guide member is formed in a curved shape, and the rotation locus of one end of a link can be changed suitably.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a door supported by a support mechanism according to an embodiment of the present invention, viewed from the passenger compartment side, Fig. 2 is a schematic plan view illustrating the operation of the mechanism, and Fig. 3 is a link mechanism. FIG. 4 is a plan view corresponding to FIG. 2 showing a modification of the support arm, FIG. 4 is a plan view corresponding to FIG. 2 showing a modification of the support arm, and FIG. 5 is a perspective view of the support arm. Explanation of symbols, 11...Door, 20a, 20d...
...Support arm, 20b, 20c...Link mechanism,
24...link, 25...guide rail.

Claims (1)

[Scope of utility model registration request] A support arm rotatably supports a door for opening and closing an opening provided on one side of the vehicle body at one side edge of the opening, and a link connecting the door to the vehicle body, and the support arm and the link are provided. A support mechanism for a vehicle door that moves the door along the outside of the vehicle body to open and close the opening through the cooperation of the
A guide member in which one end of the link is rotatably attached to the door side, the other end is rotatably attached to the vehicle body side and slidable in the axial direction, and an intermediate portion of the link is provided on the vehicle body side. A support mechanism for a vehicle door, characterized in that the link is movably engaged with the link, so that the link can be slid into the vehicle body at least in the initial stage of opening of the door.