JPS623303Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a door opening/closing mechanism in a vehicle.
Specifically, one end of the support arm is rotatably attached to one side edge of an opening provided in the vehicle body, and the other end of the support arm is rotatably attached to a door that opens and closes the opening of the vehicle body. the door is rotatably supported on the vehicle body by the support arm;
The present invention also relates to a door opening/closing mechanism for a vehicle in which the vehicle body and the door are connected by a link, and the upright state when the door rotates is restricted to a constant state by the support arm and the link.

Generally, this type of door opening/closing mechanism is used as a door opening/closing mechanism in vehicles such as buses.In this type of opening/closing mechanism, the mounting part on one end of the support arm is held in a certain upright position. Open the opening in the vehicle body by rotating the door to the rear or front of the opening in the vehicle body as the center of rotation, and then rotate the door from this state to the front or rear of the opening in the vehicle body in the opposite direction to the above. It is designed to close the opening in the vehicle body. By the way, in this type of conventional opening/closing mechanism, the other end of the support arm is rotatably attached to a bracket protruding toward the inside of the vehicle from the inner panel of the door, so that when the door is rotated, the other end of the support arm is rotatably attached to a bracket that protrudes toward the interior of the vehicle. The maximum amount of protrusion was quite large.

The present invention was developed by focusing on the above-mentioned circumstances, and its main purpose is to position the center of rotation of the door relative to the support arm that constitutes the door opening/closing mechanism between the inner and outer plate members of the door. The objective is to reduce the maximum amount of outward protrusion of the door when it rotates (opens and closes) compared to the conventional art.

Hereinafter, the present invention will be explained based on the drawings. FIG. 1 shows a bus employing a door opening/closing mechanism according to the present invention. This bus has an entrance 11 on the left side of the vehicle body 10.
A door 20 for opening and closing the entrance/exit 11 is attached to the rear side edge of the vehicle 1 by a support arm 30 constituting an opening/closing mechanism. The opening/closing mechanism is shown in Figure 2~
As shown in FIG. 4, the main components are a support arm 30, a regulating link 40, and a door check 50.

Thus, the support arm 30 includes a pair of upper and lower arm portions 31 and 32 bent in a curved shape, and both arm portions 3
The main components are connecting rod parts 33 and 34 that connect the arms 1 and 32, and the inner ends of each arm part 31 and 32 are fixed to the upper and lower ends of the inner connecting rod part 33,
And each upper and lower end of the outer connecting rod part 34 is connected to each arm part 3.
It is fixed to the outer end sides of 1 and 32. Furthermore, mounting brackets 33a and 33b for mounting on the vehicle body 10 are rotatably attached to the upper and lower ends of the inner connecting rod portion 33. The outer end sides of each of the arm parts 31 and 32 of the support arm 30 are bent toward the front of the vehicle body 10 to a greater extent than other parts, as shown in FIG. Mounting brackets 31a and 32a are rotatably fitted. In this support arm 30, each mounting bracket 33a, 3 on the inner end side
3b is attached to the inside of the vehicle at the rear edge of the entrance/exit door 11, and each mounting bracket 3 on the outer end side
1a and 32a are attached to the door 20. Of these mounting brackets 31a, 32a, the upper mounting bracket 31a is mounted approximately at the center of the stepped portion of the frame plate member 21 located at the lower side of the window of the door 20, as shown in FIG. Further, the lower mounting bracket 32a is located between the inner plate member 22 and the outer plate member 23 of the door 20, as shown in FIG. The intermediate plate 2 bulges toward the outer plate member 23 side.
4, and in this state, the lower arm portion 32 is attached to the long hole 22a of the inner plate member 22.
stands out from As a result, the door 20 is connected to the vehicle body 10 by the inner connecting rod portion 33 of the support arm 30.
The mounting brackets 31a and 32a are connected to the support arm 30 and can be rotated about an axis.

On the other hand, the vehicle body 10 and the door 20 are connected by a regulation link 40, as shown in FIG.
The inner end of the regulation link 40 is rotatably attached to a mounting bracket 41 provided on the lower surface of the vehicle body 10, and the outer end thereof is rotatably attached to a mounting bracket 42 provided at the front lower end of the door 20. installed on. Thereby, the regulating link 40 cooperates with the support arm 30 to restrict the standing state when the door 20 is rotated from being in the same standing state as when it is closed.
Further, a known door check 50 is disposed between the inner panel member 22 and the outer panel member 23 of the door 20. This door check 50 restricts the rotation of the door 20 when it is fully opened, and is attached to the intermediate plate 24 and located near the outer end of the arm portion 32 below the support arm 30.
The lever 51 and the outer end of the lower arm portion 32 are rotatably connected via a connecting arm 52.

The opening/closing mechanism configured in this manner operates as shown in FIG. 4 to open and close the door 20. In FIG. 4, the solid line indicates the fully closed state of the door 20,
In this state, the door 20 is supported by the support arm 30, the link 40, and the opening edge of the entrance/exit door 11. When the door 20 in this state is pushed obliquely backward, the door 20 rotates toward the rear of the entrance/exit 11 about the inner connecting rod portion 33 of the support arm 30, and becomes fully open. During this time, the door 20 is maintained in its fully closed upright state by the cooperation of the support arm 30 and the link 40, and
After passing through the half-open state shown by the dotted chain line, it becomes the fully open state shown by the two-dot chain line, and is maintained in the fully open state by the action of the door check 50. Furthermore, when the door 20 in the fully open state is pushed diagonally forward, it rotates forward in the opposite manner to the above, from the fully open state shown by the two-dot chain line to the half-open state shown by the one-dot chain line, and then to the fully closed state shown by the solid line. to return to.

By the way, in this opening/closing mechanism, among the mounting brackets 31a and 32a provided at each outer end of both arm parts 31 and 32 of the support arm 30, the upper mounting bracket 31a is attached to the frame plate member 21 of the door 20.
A lower mounting bracket 32a is attached to the intermediate plate 24 located between the inner and outer plate members 22 and 23 of the door 20. Therefore, the center of rotation of the door 20 with respect to the support arm 30 is set to the door 2
0 between the inner and outer plate members 22 and 23, and the maximum amount of outward protrusion when the door 20 rotates (opens and closes) can be reduced compared to the conventional case.

In addition, especially in this embodiment, both arm portions 3
The outer ends of 1 and 32 are larger than the other parts of the vehicle body 10.
and the outer ends of the doors 20
Since the arm portions 31 and 23 are located between the inner and outer plate members 22 and 23 of the door 20 when the door 20 is fully closed,
32 can be made smaller than before. Furthermore, in this embodiment, the door check 50 is disposed at the center of rotation of the door 20 relative to the support arm 30 to reduce the rotational torque applied to the door check 50. , one with low strength, one with simple structure, etc. can be adopted.

Note that this embodiment merely shows one embodiment of the present invention, and in the present invention, an appropriate support arm may be employed in place of the support arm 30. In addition, the present invention is not limited to buses; one end of the support arm is rotatably attached to one side edge of an opening in the vehicle body, and the other end of the support arm is attached to a door that opens and closes the opening in the vehicle body. The door is rotatably mounted, the door is rotatably supported on the vehicle body by a support arm, and the vehicle body and door are connected by a link, and the upright state when the door rotates is controlled to a constant state by the support arm and link. It can be applied to various types of vehicles.

As explained above, the present invention provides the above-mentioned various vehicles in which the other end attachment portion of the support arm is disposed between the inner plate member and the outer plate member of the door, and the rotation of the door with respect to the support arm is achieved. Its structural feature is that the center of motion is located between the inner and outer plate members. Therefore, according to the present invention, the maximum amount of outward protrusion when the door is opened and closed can be made smaller than that of the prior art.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a vehicle employing the opening/closing mechanism according to the present invention, Fig. 2 is an enlarged partial perspective view of the same vehicle as seen from the cabin side showing the door in a half-open state, and Fig. 3 shows the configuration of the opening/closing mechanism. FIG. 4 is a schematic plan view showing the operation of the opening/closing mechanism, and FIG. 5 is an enlarged partial sectional view of the attachment portion of the lower arm portion of the support arm. Explanation of symbols, 10... Vehicle body, 11... Entrance/exit,
20...Door, 22...Inner plate member, 23...Outer plate member, 30...Support arm, 31, 32...Arm portion, 31a, 32a...Mounting bracket, 3
3, 34...Connecting rod part, 40...Link, 50...
...Door check.

Claims (1)

[Scope of utility model registration request] One end of the support arm is rotatably attached to one side edge of an opening provided in the vehicle body, and the other end of the support arm is rotatably attached to a door that opens and closes the opening of the vehicle body. A door is rotatably supported on the vehicle body by the support arm, and the vehicle body and the door are connected by a link, and an upright state when the door rotates is regulated to a constant state by the support arm and the link. In the vehicle, the other end attachment portion of the support arm is disposed between an inner plate member and an outer plate member of the door, and the center of rotation of the door with respect to the support arm is aligned with both the inner and outer plates of the door. A door opening/closing mechanism characterized by being located between members.