KR19980033391U - Door shock absorber - Google Patents

Abstract

The present invention relates to a pneumatic cylinder for opening and closing the door of the bus, in particular in order to reduce the repulsive force of the pneumatic cylinder generated when the door is closed to extend the life of the door, it is axially rotated on the side of the door of the vehicle The door 10 is hinged, and the lower part of the door 10 is connected to the pneumatic cylinder 30 via a link 20, and the upper side of the door 10 is rotatable. While the roller 40 is integrally mounted, the vehicle has a structure in which a guide rail 50 is formed along the longitudinal direction to allow the door 10 to be opened and closed while the roller 40 slides on the upper portion of the door 10. In the door buffer device, the lower portion of the guide rail 50, when the door 10 is closed, the buffer member 70 is mounted via the fastening means 60 at the point of contact with the roller 40 The front end portion of the shock absorbing member 70 has a structure in which a rounded shock absorbing member 80 is integrally formed so that the instantaneous repulsive force generated in the pneumatic cylinder or link at the moment the door is closed is removed. To extend the life of the door.

Description

Door shock absorber

The present invention relates to a pneumatic cylinder for opening and closing the door of the bus, and more particularly to a door buffer device of the vehicle that can extend the life of the door by reducing the repulsive force of the pneumatic cylinder generated when the door is closed.

In general, cars are classified into vans and vans according to the purpose of use. Such vans are classified into small vans such as sedans and buses, depending on the number of passengers.

In this case, the above-mentioned bus is divided into city driving, long distance driving, sightseeing, and high speed road according to the driving purpose, and in the case of a bus that uses a short distance than a high speed or sightseeing bus that runs at high speed or long distance, A variety of facilities are required to make the ride more comfortable.

In particular, the bus used for the short-distance driving is provided with an entrance door for passengers to easily enter and exit, and the entrance door is usually composed of two foldable doors having a symmetrical shape, and the operator operates the lever in the cabin. It is designed to be opened and closed easily by using pneumatic cylinder which is operated by operating and link connected to this pneumatic cylinder.

That is, as shown in FIG. 1, a conventional bus door configured to perform the above function may allow one of the doors 100, 100 ′ symmetrically to the side of the door of the vehicle to be rotatable. It is hinged, the lower part of the door 100 is connected to the pneumatic cylinder 130 through the link 120, the roller 110 is integrally mounted on the upper side of the door (100 '). On the other hand, the upper guide rail 140 for opening and closing the door while sliding the roller 110 in the upper portion of the door (100, 100 ') has a structure formed long along the longitudinal direction.

Therefore, when the driver manipulates the operation lever, the pneumatic cylinder 130 is operated and the link 120 is pulled or pushed so that the roller 110 provided on the upper door by the link 120 slides and the guide rail 140. ) Will be moved to open and close the door (100, 100 ').

However, when operating the operation lever to close the door of the bus is closed by sliding through the roller 110, the moment the door (100, 100 ') is to close the pneumatic cylinder 130 or link 120 There was a problem that the instant repulsive force is generated in the back to shorten the life of the door.

Accordingly, the present invention has been made in order to solve the above problems, to provide a door buffer device of the vehicle that can extend the life of the door by reducing the repulsive force of the pneumatic cylinder generated when the door is closed. The purpose is.

The present invention for achieving the above object is, the hinged door is hinged to the side of the door of the vehicle, the pneumatic cylinder is connected to the lower portion of the door via a link, In the upper side of the roller is configured to be rotatable integrally, while the upper door of the door door buffer device of the vehicle consisting of a guide rail that is formed along the longitudinal direction to open and close the door while the roller slides, In the lower part of the guide rail, when the door is closed, the shock absorbing member is mounted at the point of contact with the roller through the fastening means, and the shock absorbing member of the rounded shape is integrally formed at the tip of the shock absorbing member. .

Therefore, when the door is closed while the passenger is in the vehicle, the roller and the shock absorbing member contact each other, thereby removing the instantaneous repulsive force generated by the pneumatic cylinder or the link at the moment the door is closed, thereby extending the life of the door. It is to be made.

1 is a schematic side view of a bus in which a door according to the prior art is installed;

Figure 2 is a cross-sectional view of the A-A part of Figure 1 schematically showing a state in which the shock absorbing member is inserted according to the present invention,

Figure 3 is a schematic perspective view of the buffer member in the present invention.

* Description of the symbols for the main parts of the drawings *

10: door 20: link

30: pneumatic cylinder 40: roller

50: guide rail 60: fastening means

70 buffer member 80 shock absorbing member

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view of the AA part of Figure 1 schematically showing a state in which the shock absorbing member is inserted according to the present invention, Figure 3 is a schematic perspective view of the shock absorbing member in the present invention, as shown in these figures, of the vehicle The door 10 is pivotally coupled to the side of the entrance, the lower portion of the door 10 is connected to the pneumatic cylinder 30 via a link 20, the door 10 The roller 40 is rotatably mounted on the upper side, while the guide rail 50 for opening and closing the door 10 while the roller 40 slides on the upper part of the door 10 is in the longitudinal direction. In the door buffer device of the vehicle formed in accordance with the structure, the lower portion of the guide rail 50 when the door 10 is closed by the fastening means 60 in contact with the roller 40 at the point of contact The member 70 is mounted and this At the tip of the shock absorbing member 70, a rounded shock absorbing member 80 is integrally molded.

Here, the guide rail 50 is provided at the upper end of the door 10 of the bus, the guide rail 50 is provided with a roller 40 is fitted so that the door can be guided, the roller 40 ) Is structured to close or open the door 10 while moving along the guide rail 50 by a simple switch operation of the driver.

In addition, a predetermined position of the lower portion of the guide rail 50, that is, the door 10 when the door 10 is closed in contact with the roller 40, the buffer member 70 is mounted via the fastening means 60, this The tip portion of the shock absorbing member 70 has a rounded shape, and a rubber shock absorbing member 80 is integrally formed on the outer circumferential surface of the shock absorbing member 70 to prevent noise at the moment of contact with the roller 40. It is.

Hereinafter, the operation of the present invention will be described.

First, when the driver performs a simple switch operation to close the door 10, the link 20 protrudes to the outside by the air pressure of the pneumatic cylinder 30 to push the door 10.

Here, when the roller 40 rotatably installed on the upper side of the door 10 moves along the guide rail 50 formed along the longitudinal direction on the upper part of the door 10, the door is closed.

At this time, as soon as the door 10 is completely closed, the roller 40 mounted on the upper side contacts the buffer member 70 and the door stops.

Of course, the roller 40 is in close contact with the shock absorbing member 80 integrally formed on the outer circumferential surface of the buffer member 70 to prevent noise.

On the other hand, when the driver performs a simple switch operation to open the door 10, the link 20 is received inside the air by the air pressure of the pneumatic cylinder (30) to pull the door 10.

Of course, the door 10 is operated separately from the shock absorbing member 70 and the shock absorbing member (80).

As described above, according to the door shock absorber of the vehicle according to the present invention, when the door is closed in the state where the passenger is completed in the vehicle, the roller, the buffer member and the shock absorbing member are in contact with each other, the moment the door is to be closed, the pneumatic cylinder Or instantaneous repulsive force generated in the link is removed to have the effect of extending the life of the door.

Claims (1)

The door 10 which is axially rotated to the side of the entrance of the vehicle is hinged, the pneumatic cylinder 30 is connected to the lower portion of the door 10 via a link 20, the door 10 The roller 40 is rotatably mounted on the upper side of the door, while the guide rail 50 for opening and closing the door 10 while the roller 40 slides is mounted on the upper part of the door 10. In the door buffer device of the vehicle having a structure formed along the longitudinal direction, the lower portion of the guide rail 50 when the door 10 is closed via the fastening means 60 in contact with the roller 40 to the point The shock absorbing member (70) is mounted, and the shock absorbing member (80) of the rounded shape is formed on the front end of the shock absorbing member (70) integrally molded structure, characterized in that the vehicle door buffer device.