Seat safety handrail

Abstract

The utility model relates to a seat safety handrail, which relates to a handrail technology and comprises movable handrails symmetrically arranged on the left and right sides of a seat. The movable handrail comprises a base, a swing arm swingingly arranged on a vertical plate of the base, a handrail driven by the swing arm, a swing lever connected to a rotating shaft of the swing arm and linked with the swing arm, and a spring connected between a free end of the swing lever and the vertical plate of the base. Compared with the prior art, the utility model has the advantages that the seat safety handrail can be conveniently arranged on an engineering vehicle to provide protection for an operator, and the operator can quickly release the protection and leave the seat to ensure that the operator can conveniently get on and off the seat and quickly release the protection constraint to escape from danger on the seat when an unexpected danger occurs.

Description

Technical Field

[0001] This invention relates to armrest technology, particularly seat safety armrests. Background Technology

[0002] Due to the operating environment, it is difficult to install seat belts on existing engineering vehicles. Without safety protection, the operator is easily injured in the event of an accident. Summary of the Invention

[0003] The purpose of this invention is to provide a seat safety armrest that is conveniently installed on engineering vehicles to provide protection for operators, while also allowing operators to quickly remove the protection and leave the seat. This ensures that operators can easily enter and exit the seat and, in the event of an accident, can quickly release the protective restraints and escape danger from the seat.

[0004] The seat safety armrest of the present invention is implemented as follows: it includes movable armrests symmetrically arranged on the left and right sides of the seat. The movable armrest includes a base, a rocker arm swinging on the vertical plate of the base, an armrest driven by the rocker arm, a swing rod connected to the pivot of the rocker arm and linked with the rocker arm, and a spring connected between the free end of the swing rod and the vertical plate of the base. The pivot is located in the middle of the rocker arm and is horizontally rotatably connected to the vertical plate of the base. The spring is a compression spring. The connection point of the spring on the vertical plate of the base is arranged such that when the armrest swings with the rocker arm to the protective position for the operator, the free end of the swing rod is located on one side of the line connecting the connection point of the spring on the vertical plate of the base to the pivot of the pivot, and the spring force is in a released state. When the armrest swings with the rocker arm away from the protective position, the free end of the swing rod is located on the other side of the line connecting the connection point of the spring on the vertical plate of the base to the pivot of the pivot, and the spring force is in a released state.

[0005] In use, the safety armrests of this invention are installed on the left and right sides of the engineering vehicle seat. After the operator sits on the seat, the armrests are flipped inward to the protective position. At this time, because the free end of the swing arm is located on one side of the line connecting the connection point of the spring on the vertical plate of the base to the rotation axis of the shaft, the armrest is maintained in the protective position under the action of the spring. When the operator needs to leave the seat, the armrests are flipped outward to move away from the protective position. At this time, because the free end of the swing arm is located on the other side of the line connecting the connection point of the spring on the vertical plate of the base to the rotation axis of the shaft, the armrest is maintained away from the protective position under the action of the spring. Since the rotation axis of the shaft is located in the middle of the rocker arm, when the armrest is flipped, it either flips out of the base to the protective position to protect the operator, or it moves away from the outside of the seat, so that the operator can easily get off the seat without being obstructed by the armrest and the base.

[0006] Preferably, the handrail is L-shaped, with the vertical bar of the L-shaped handrail connected to the rocker arm and perpendicular to the vertical plate of the base, and the horizontal bar of the L-shaped handrail parallel to the vertical plate of the base. In this way, when the handrail is flipped out of the base to the protective position, the operator's hand can be placed on the vertical bar of the L-shaped handrail, and the horizontal bar of the L-shaped handrail extends in front of the operator to protect the operator.

[0007] Preferably, the spring is a V-shaped spring, with one end of the V-shaped spring rotatably connected to the free end of the swing arm and the other end of the V-shaped spring rotatably connected to the vertical plate of the base. When the handrail is flipped inward to the protective position, and the horizontal bar of the L-shaped handrail is in a horizontal position, the elastic force of the V-shaped spring is completely released. When the handrail is flipped out of the base and away from the protective position, and the horizontal bar of the L-shaped handrail is in a vertical position, the elastic force of the V-shaped spring is completely released.

[0008] Compared with existing technologies, this invention has the advantages of being convenient to install on engineering vehicles to provide protection for operators, and at the same time, it allows operators to quickly remove the protection and leave the seat, so as to ensure that operators can easily enter and exit the seat and can quickly remove the protective restraints and escape from the danger in the event of an accident. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the seat safety armrest of the present invention; Figure 2 This is a schematic diagram of the structure of the movable handrail of the present invention, which removes the vertical plate of the base.

[0010] Explanation of reference numerals in the attached diagram: A - movable handrail; B - connection point; C - protective position; D - free end; E - rotation axis; 1 - base; 101 - vertical plate; 2 - rocker arm; 3 - handrail; 301 - vertical bar; 302 - horizontal bar; 4 - rotating shaft; 5 - swing arm; 6 - spring; 7 - rotating component. Implementation

[0011] The seat safety armrest of the present invention will now be described in further detail with reference to the accompanying drawings and embodiments: like Figure 1As shown, the seat includes movable armrests A symmetrically arranged on the left and right sides. The movable armrests A include a base 1, a rocker arm 2 swinging on the vertical plate 101 of the base 1, an armrest 3 driven by the rocker arm 2, a swing rod 5 connected to the pivot 4 of the rocker arm 2 and linked with the rocker arm 2, and a spring 6 connecting the free end of the swing rod 5 to the vertical plate 101 of the base 1. The pivot 4 is located in the middle of the rocker arm 2 and is horizontally rotatably connected to the vertical plate 101 of the base 1. The connection point B of the spring 6 on the vertical plate 101 of the base 1 is set such that when the armrest 3 swings with the rocker arm 2 to the protective position C for the operator, the free end D of the swing rod 5 is located on one side of the line connecting the connection point B of the spring 6 on the vertical plate 101 of the base 1 to the rotation axis E of the pivot 4. When the armrest 3 swings with the rocker arm 2 away from the protective position C, the free end D of the swing rod 5 is located on the other side of the line connecting the connection point B of the spring 6 on the vertical plate 101 of the base 1 to the rotation axis E of the pivot 4.

[0012] Preferably, the handrail 3 is L-shaped, with the vertical bar 301 of the L-shaped handrail connected to the rocker arm 2 and perpendicular to the vertical plate 101 of the base 1, and the horizontal bar 302 of the L-shaped handrail parallel to the vertical plate 101 of the base 1.

[0013] Preferably, the spring 6 is a V-shaped spring, with one end of the V-shaped spring rotatably connected to the rotating part of the free end D of the swing arm 5, and the other end of the V-shaped spring rotatably connected to the rotating part 7 of the vertical plate 101 of the base 1. When the handrail 3 is flipped inward to the protective position C, so that the horizontal bar 302 of the L-shaped handrail is in the horizontal position, the elastic force of the V-shaped spring is completely released. When the handrail 3 is flipped out of the base 1 and away from the protective position C, so that the horizontal bar 302 of the L-shaped handrail is in the vertical position, the elastic force of the V-shaped spring is completely released.

[0014] Preferably, the rocker arm 2 is hook-shaped, which ensures that the armrest 3 can be flipped from the outside of the seat into the protective position C, or from the protective position C out of the seat.

Claims

1. A seat safety armrest, characterized in that, The system includes movable armrests symmetrically arranged on the left and right sides of the seat. Each armrest comprises a base, a rocker arm swinging on a vertical plate of the base, an armrest driven by the rocker arm, a swing rod connected to the pivot of the rocker arm and linked to the rocker arm, and a spring connecting the free end of the swing rod to the vertical plate of the base. The pivot is located in the middle of the rocker arm and is horizontally rotatably connected to the vertical plate of the base. The spring is a compression spring. The connection point of the spring on the vertical plate of the base is configured such that when the armrest swings with the rocker arm to the protective position for the operator, the free end of the swing rod is located on one side of the line connecting the connection point of the spring on the vertical plate of the base to the pivot of the rotating shaft, and the spring force is released. When the armrest swings with the rocker arm to a position away from the protective position, the free end of the swing rod is located on the other side of the line connecting the connection point of the spring on the vertical plate of the base to the pivot of the rotating shaft, and the spring force is released.

2. The seat safety armrest according to claim 1, characterized in that, The handrail is L-shaped, with the vertical bar of the L-shaped handrail connected to the rocker arm and perpendicular to the vertical plate of the base, and the horizontal bar of the L-shaped handrail parallel to the vertical plate of the base.

3. The seat safety armrest according to claim 1 or 2, characterized in that, The spring is a V-shaped spring. One end of the V-shaped spring is rotatably connected to the rotating part at the free end of the swing arm, and the other end of the V-shaped spring is rotatably connected to the vertical plate of the base. When the handrail is flipped inward to the protective position, so that the horizontal bar of the L-shaped handrail is in the horizontal position, the elastic force of the V-shaped spring is completely released. When the handrail is flipped out of the base and away from the protective position, so that the horizontal bar of the L-shaped handrail is in the vertical position, the elastic force of the V-shaped spring is completely released.

4. The seat safety armrest according to claim 1 or 2, characterized in that, The rocker arm is hook-shaped.

5. The seat safety armrest according to claim 3, characterized in that, The rocker arm is hook-shaped.

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