KR20020077990A - Step plate having auxiliary step plate for freight car - Google Patents

Abstract

PURPOSE: A footstep with an auxiliary footstep of a truck is provided to make a user easily get on and off a truck by stepping a fixed footstep and a movable auxiliary footstep moving upward and downward and to maintain the height of a step while a door is closed or a vehicle is in a travel. CONSTITUTION: A cylinder(110) is installed in the side of a fixed footstep(4). The cylinder is turned on and off automatically depending on the opening and closing of a door. An auxiliary footstep(120) placed below the fixed footstep is fixed on the end of a rod(111) of the cylinder and moves upward and downward by the operation of the cylinder. A guide rod(130) is installed in the side of the fixed footstep to guide the upward and downward movement of the auxiliary footstep.

Description

Step plate having auxiliary step plate for freight car}

The present invention relates to a scaffold for a cargo truck having an auxiliary scaffold, and more particularly, the cylinder is automatically operated when the door is opened and closed to move up and down the auxiliary scaffold installed at the bottom of the fixed scaffold to assist passengers in getting on and off. The present invention relates to a scaffold for a cargo truck having an auxiliary scaffold.

In general, as shown in Figure 1, a cargo truck for transporting a large amount of cargo is divided into a cab (1) that can occupy the occupant and a loading box (2) for loading the cargo.

The side of the cap 1 is installed to open and close the door (3), the lower side of the cap 1, that is, the lower portion of the door (3) can be fixed by the occupant can step on the passenger to easily get on / off The footrest 4 is fixed.

Since the cap 1 of such a van is installed high, the occupant is configured to step on / off the fixed footrest 4 after opening the door 3 when getting on or off.

However, since the conventional fixed footrest 4 is fixed to the lower part of the cap 1, it is impossible to change the installation position. In particular, in the case of a large cargo truck, the fixed footrest 4 is installed even if the fixed footrest 4 is installed. There was a problem that the passenger can not easily get on / off.

Therefore, in order to solve such a problem, the installation height of the fixed scaffold 4 can be lowered to some extent, but this is because the height of the stepped height (the height of the fixed scaffold) is limited by the law, which lowers the installation position of the fixed scaffold 4. There is a limit.

The present invention has been invented to solve the above problems, the purpose of which is to allow the passenger to move up and down the auxiliary scaffold installed in the lower portion of the fixed scaffold in accordance with the opening and closing state of the door while satisfying the height of the step height prescribed in the law An object of the present invention is to provide a scaffold for a cargo truck having an auxiliary scaffold that can easily get on and off.

1 is a perspective view showing a freight truck installed with a conventional fixed footrest.

Figure 2 is a perspective view showing a scaffold for cargo truck having an auxiliary scaffold in accordance with the present invention.

Figure 3a, 3b is a perspective view of the back portion of the main portion of the present invention.

※ Explanation of symbols about main part of drawing ※

1: cap 3: door

4: fixed footrest 110: cylinder

111: Rod 120: Auxiliary Scaffold

130: guide rod 131: support piece

140: damper

In order to achieve the above object, the present invention is a cargo truck provided with a fixed footrest on the lower side of the door so that the occupant in the cab of the cargo truck can easily get on and off, the door is automatically turned on according to the opening and closing of the door A cylinder installed on a side of the fixed footrest to be off; An auxiliary scaffold positioned below the fixed scaffold and fixed to an end of the rod of the cylinder to move up and down with the operation of the cylinder; It consists of a guide rod which is installed on the side of the fixed scaffold to guide the vertical movement of the auxiliary scaffold.

To summarize the technique of the present invention, the cylinder is installed on the side of the fixed footrest and the rod end of the cylinder is fixed to the auxiliary footrest, and the cylinder is automatically operated according to the opening and closing of the door so that the auxiliary footrest moves up and down It is configured to facilitate getting on and off.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the scaffold for cargo truck having an auxiliary scaffold according to the present invention.

Figure 2 is a perspective view showing a scaffold for a cargo truck having an auxiliary scaffold according to the present invention, Figures 3a, 3b is a perspective view of the back portion of the main portion of the present invention.

As shown in Figs. 2, 3A and 3B, the cargo footrest having the auxiliary footrest of the present invention has a fixed footrest 4 which is usually fixedly installed under the cap 1 of the cargo truck, and the fixed footrest 4 It is composed of the auxiliary scaffold 120 is moved up and down in the lower portion.

Typically, both sides of the cap 1 are installed to open and close the door 3 for occupant's entrance and exit, and the fixed footrest 4 is fixed to the outside of the cap 1 on both lower sides of the cap 1. The cylinder 110 is provided in one side surface of the fixed scaffold 4.

A solenoid valve (not shown) is automatically installed between the cap 1 and the door 3 according to opening and closing of the door 3, and the cylinder 11 is operated by the solenoid valve. do.

Compressed air is introduced into the tube 110a of the cylinder 110 due to the operation of the solenoid valve.

An auxiliary scaffold 120 is fixedly installed at the end of the cylinder 110, more precisely, at the end of the rod 111. The auxiliary scaffold 120 is located at the bottom of the rear surface of the fixed scaffold 4 is configured to move up and down in accordance with the expansion and contraction of the rod (111).

Guide rods 130 are elastically installed on the side surfaces of the fixed scaffold 4 to guide the vertical movement of the auxiliary scaffold 120, and the guide rods 130 are supported by the support pieces 131. .

The guide rod 130 is configured in two stages and can be stretched together with the rod 111 of the cylinder 110 while being supported by the support piece 131.

In addition, a damper 140 is installed between the fixed footrest 4 and the auxiliary footrest 120, and the damper 140 may be generated when the auxiliary footrest 120 comes into contact with the fixed footrest 4 while the freight truck is running. It can prevent the noise in advance.

Therefore, the damper 140 is preferably used as a soft material such as a rubber material.

Looking at the action of the cargo truck scaffold having an auxiliary scaffold according to the present invention configured as described above are as follows.

3a shows a state in which the door 3 is closed, with the fixed footrest 4 positioned at the bottom of the cap 1, which opens when the occupant opens the door 3 to get on or off the cap 1. The cylinder 110 is operated by a solenoid valve which is automatically operated in accordance with opening and closing of the losing door 3.

As the cylinder 110 is operated, compressed air is introduced through the tube 110a to extend the rod 111 of the cylinder 110 downward. At this time, the auxiliary footrest 120 fixed to the end of the rod 111 is also moved downward.

As the auxiliary scaffold 120 is moved downward, the occupant can comfortably get on and off using the auxiliary scaffold 120 and the fixed scaffold 4.

When the auxiliary footrest 120 is moved downward, the guide rod 130 is supported by the support piece 131 to smoothly lower the auxiliary footrest 120.

When the occupant closes the door 3 after getting on or off, the cylinder 110 is operated by the operation of the solenoid valve installed inside the cap 1.

As the cylinder 110 is operated, compressed air is introduced through the tube 110a to reduce the rod 111 of the cylinder 110 upward. At this time, the auxiliary footrest 120 fixed to the end of the rod 111 is also moved upward to be located below the fixed footrest 4 so that it is not exposed to the outside.

In other words, when the auxiliary scaffold 120 is not used, the auxiliary scaffold 120 is located in close contact with the lower portion of the fixed scaffold 4 and is configured not to protrude forward so as not to harm the appearance of the cargo truck.

When the auxiliary footrest 120 is in close contact with the bottom of the fixed footrest 4, the auxiliary footrest 120 does not come into direct contact with the fixed footrest 4 by the damper 140, so that contact noise is not generated during driving. Do not.

The present invention is to automatically drive the cylinder by the door that is opened and closed when the occupant in the cab of the truck, the auxiliary scaffold is moved up and down in the lower part of the cap so that the occupant can easily step on and down the platform As well as being able to maintain the height of the step height while the door is closed or driving, there is an effect that can meet the limit height specified in the law.

Claims (2)

In a cargo truck provided with a fixed footrest (4) below the door (3) so that occupants of the cargo truck cap (1) can easily get on / off, A cylinder (110) installed on a side of the fixed footrest (4) to automatically turn on and off as the door (3) opens and closes; An auxiliary scaffold 120 positioned below the fixed scaffold 4 and fixed to the end of the rod 111 of the cylinder 110 to move up and down with the operation of the cylinder 110; A scaffold for a cargo truck having an auxiliary scaffold, characterized in that it comprises a guide member 130 is installed on the side of the fixed scaffold (4) to guide the vertical movement of the auxiliary scaffold (120). 2. The scaffold for a cargo truck according to claim 1, wherein a damper (140) is installed between the fixed scaffold (4) and the auxiliary scaffold (120) to prevent contact noise.