JP2015137039A - Hanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanger capable of ensuring the safe and riding comfort of a passenger sufficiently.SOLUTION: A hanger provided in a transport vehicle comprises: a hanging ring for a passenger to grab; a cylinder inner tube attached to the upper part of the hanging ring; a cylinder outer tube installed so as to cover all or a part of the cylinder inner tube; a strap attached to the upper part of the cylinder outer tube; and a shaft for fixing the strap. A piston and a rod forming the cylinder outer tube are inserted to the cylinder inner tube from the upper part. A closed space is formed while the piston and the rod are inserted. An inert gas is filled in the closed space. The cylinder inner tube slides in an axial direction of the rod on the basis of stress generated by the change in the volume of the inert gas.

Description

  The present invention relates to a suspension hand, and is particularly suitable for application to a transportation vehicle.

  In general, a transport vehicle is provided with a suspension for the purpose of ensuring the safety and riding comfort of a passenger who gets on the vehicle standing. Many of the currently widely used suspension hands have a fixed height in the vertical direction, and may be difficult to grasp depending on the height of the passenger. Therefore, conventionally, a suspension hand whose height in the vertical direction is adjustable has been proposed.

  For example, Patent Document 1 discloses a locking mechanism, Patent Document 2 discloses a spring mechanism, and Patent Document 3 discloses a suspension that can be adjusted in height by using a power source such as a motor installed on the ceiling. Yes. According to the suspension hand described in these patent documents 1 to 3, it is said that the safety and riding comfort of the passenger can be ensured by making the height of the suspension hand adjustable.

JP 2001-71805 A JP 2000-43720 A JP 2006-273269 A

  However, in order to sufficiently secure the safety and riding comfort of passengers, a configuration that can satisfy all of convenience, stability, and durability is required. The structure which can satisfy | fill all the property, stability, and durability is not employ | adopted. Therefore, the suspension hand described in Patent Documents 1 to 3 cannot sufficiently ensure the safety and riding comfort of passengers.

  Specifically, in order to satisfy convenience, a configuration capable of adjusting the height with a simple operation is required. Since the optimum height of the suspension depends on the individual passenger, it is desirable that the height of each suspension is adjustable by the individual passenger. In general, since passengers use a suspension hand with one hand, it is desirable that the height can be adjusted with one hand. However, the suspension hand described in Patent Document 3 cannot be adjusted in height by individual passengers, and is not convenient.

  In order to satisfy stability, it is necessary that the height of the suspension is fixed without being changed during non-operation. If the height of the lifting hand changes unexpectedly when not in operation, the safety of the gripping hand may be impaired. Therefore, it is desirable that the height of the suspension is securely fixed when not being operated, and it is desirable to make the play as small as possible. However, the suspension hand described in Patent Document 2 is not fixed when not operated, and stability is not achieved.

  Further, in order to satisfy the durability, it is necessary that the mechanism for adjusting the height is simple and has a structure excellent in load resistance. In order to accommodate various heights, physiques, and gripping methods, the weight point material and shape should be considered. It is also desirable to reduce the failure rate by making the movable part as simple as possible. However, since the suspension hand described in Patent Document 1 has a complicated locking mechanism, durability is not achieved.

  The present invention has been made in consideration of the above points, and proposes a suspension that can sufficiently ensure the safety and comfort of passengers.

  In order to solve such a problem, in the present invention, in a suspension provided for a transport vehicle, a suspension ring for a passenger to hold, a cylinder inner cylinder attached to an upper part of the suspension ring, and all or one of the cylinder inner cylinders. A cylinder outer cylinder installed so as to cover the part, a suspension leather attached to the upper part of the cylinder outer cylinder, and a shaft for fixing the suspension leather. The cylinder inner cylinder includes a piston and a rod that form the cylinder outer cylinder. Inserted from above, forms a sealed space in the state where the piston and rod are inserted. The sealed space is filled with an inert gas, and the axial direction of the rod is based on the stress generated by the volume change of the inert gas. It is characterized by sliding.

  According to the present invention, passenger safety and riding comfort can be sufficiently ensured.

It is a section lineblock diagram of a suspension person in this embodiment. It is explanatory drawing which shows the usage example of a hanging hand. It is a section lineblock diagram of other cylinder valves.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a cross-sectional configuration of a hanging hand 1 in the present embodiment. The lifting hand 1 includes a shaft 11, a hanging leather 12, a cylinder outer cylinder 13, a cylinder inner cylinder 14, and a suspension ring 15.

  The shaft 11 is installed so as to extend to the upper part of the transport vehicle and is installed horizontally with respect to the floor surface of the transport vehicle. The suspended leather 12 has one end attached to the shaft 11 and the other end attached to the cylinder outer cylinder 13. The cylinder outer cylinder 13 includes a piston rod 131 and a piston 132 at the center position inside the outer cylinder.

  The cylinder outer cylinder 13 is installed so as to cover the cylinder inner cylinder 14. The piston rod 131 and the piston 132 pass through the upper surface of the cylinder inner cylinder 14 and communicate with the inside, and the piston 132 has a space A and a space in which the inert gas 141 filled in the cylinder inner cylinder 14 is sealed. It is installed so as to be separated from B.

  The cylinder inner cylinder 14 is filled with an inert gas 141, and includes a partition plate 142, a cylinder valve 143, and an elastic body 144. The inside of the cylinder inner cylinder 14 has a sealed structure so that the stress generated by the volume of the filled inert gas 141 does not deteriorate. In addition, the structure is excellent in load resistance to avoid stress application by locally applying stress by supporting the load using the pressure generated by the inert gas.

  The inside of the cylinder inner cylinder 14 is partitioned into two spaces A and B by a partition plate 142, a cylinder valve 143 and an elastic body 144, and a piston rod 131 and a piston 132. When the piston 132 receives the pressure of the inert gas 141 in the respective spaces A and B, the relative positions of the cylinder inner cylinder 14 and the cylinder outer cylinder 13 are fixed.

  The upper end of the suspension ring 15 is attached to the lower part of the cylinder inner cylinder 14. The suspension ring 15 includes a cylinder valve operation handle 151. The passenger can stabilize the body by grasping the suspension ring 15 and can operate the cylinder valve operation handle 151. In order to reduce the failure rate of the suspension 1, the number of movable parts in the suspension 1 is the cylinder valve operation handle 151, the other cylinder inner cylinder 14, and the elastic body 144.

  Next, the operation of the hanger 1 will be described. First, the movement of the inert gas 141 will be described. The inert gas 141 can move inside the cylinder inner cylinder 14 via a gas path formed by the partition plate 142, and the movement is restricted by the cylinder valve 143. The

  The cylinder valve 143 closes the gas path at the normal time by the elastic body 144, and can open the gas path by pulling the cylinder valve operation handle 151 downward. In FIG. 1, the inert gas 141 is in a state where movement is restricted because the cylinder valve 143 is closed.

  Next, operations and structures of the cylinder inner cylinder 14 and the cylinder outer cylinder 13 will be described. In the gas pressure type expansion / contraction cylinder constituted by the cylinder inner cylinder 14 and the cylinder outer cylinder 13, the cylinder inner cylinder 14 and the cylinder outer cylinder 13 are not fixed to each other and have a structure that can be slid in the axial direction. Due to the sliding in the axial direction, the position of the piston 132 changes relative to the cylinder inner cylinder 14.

  At this time, if the cylinder is slid downward in the axial direction so that the cylinder length determined by the cylinder inner cylinder 14 and the cylinder outer cylinder 13 becomes longer, the piston inner rod 14 is pulled out from the cylinder inner cylinder 14 and the cylinder inner cylinder is extracted. 14 The volume inside increases. Therefore, the volume of the cylinder inner cylinder 14 is minimum when the cylinder length is shortest, and conversely, it is maximum when the cylinder length is longest.

  The inert gas 141 filled in the cylinder inner cylinder 14 encloses a low-pressure gas having a sufficiently low density with respect to the volume of the cylinder inner cylinder 14. As a result, the piston 132 continues to receive force so that the volume of the inside of the cylinder inner cylinder 14 becomes the smallest, that is, the cylinder length becomes the shortest by the action of the inert gas 141 trying to contract.

  The inert gas 141 filled in the cylinder inner cylinder 14 is separated into two spaces A and B by the piston 132 and the cylinder valve 143, and when the passenger operates the cylinder valve operation handle 151 to open the cylinder valve 143. As described above, the two spaces A and B can be moved with respect to each other.

  At this time, if no external force is applied to the movement of the cylinder inner cylinder 14, the cylinder inner cylinder 14 slides so as to be shortened by the contraction force of the inert gas 141. That is, when the cylinder valve 143 is opened in a state where no force is applied, a force that pulls the cylinder inner cylinder 14 vertically upwards works, and the cylinder length is stabilized in the shortest state.

  On the other hand, when an external force is intentionally applied, the cylinder inner cylinder 14 can be slid downward. In this case, the reaction force due to the contraction force of the inert gas 141 increases as the cylinder length increases, that is, as the volume inside the cylinder inner cylinder 14 increases.

  When the cylinder valve 143 is closed by operating the cylinder valve operation handle 151, the movement of the inert gas 141 is restricted, and the two spaces A and B become sealed spaces. At this time, if the passenger applies a force to increase the volume of the inside of the cylinder inner cylinder 14 (a force to slide downward in FIG. 1), the force propagates to the bottom surface of the piston 132 and moves to the bottom surface side of the piston 132. It counteracts the contraction force of the inert gas 141 that is sealed. Therefore, the cylinder inner cylinder 14 is fixed when not operated.

  It should be noted that the amount of the inert gas 141 filled must be calculated so that a sufficient reaction force can be obtained with respect to the force applied by the passenger during non-operation.

  Next, the operation of the hanger 1 will be described. A suspension ring 15 is attached to the lower portion of the cylinder inner cylinder 14, and a cylinder valve operation handle 151 is integrally attached to the suspension ring 15. The passenger can open the cylinder valve 143 by a simple operation of gripping the suspension ring 15 and the cylinder valve operation handle 151 with fingers. When force is applied vertically downward while opening the cylinder valve 143, the suspension ring 15 is lowered vertically downward, and when the force is removed, the suspension ring 15 is raised vertically upward.

  Thus, since it is not necessary to apply force when the suspension ring 15 is lifted, the passenger can arbitrarily operate the height of the suspension ring 15 without worrying about the deflection of the suspension leather 12. Further, as the suspension ring 15 is lowered, the reaction force increases and the operation speed is reduced. Therefore, it is a safe mechanism for passengers to prevent a sudden drop of the suspension ring 15 due to an erroneous operation or an impact when the limit length is reached. .

  The passenger can fix the height of the suspension ring 15 by adjusting the height of the suspension ring 15 and then releasing the finger from the cylinder valve operation handle 151 to close the cylinder valve 143.

  FIG. 2 shows an example of use of the hanging hand 1. By extending the length of the gas pressure type telescopic cylinder so that the suspension ring 15 can be lowered to a height that can be grasped by the passenger sitting on the seat 20, the passenger can stand and sit on the seat 20 while grasping the suspension ring 15. It can be carried out.

  By utilizing the gas pressure applied in the upward direction of the suspension ring 15, the momentum is relaxed with respect to the seating motion of the passenger on the seat 20, and the momentum is supported with respect to the standing-up motion. Can be used as auxiliary equipment.

  In addition, the hanging hand 1 can be expected to be effective by adopting it to limited priority seats for the purpose of assisting physically weak people. In this case, the cost can be significantly reduced as compared with the case where all the suspensions already installed in the transport vehicle are replaced with the suspensions 1.

  FIG. 3 shows a cross-sectional configuration of another partition plate 142A and cylinder valve 143A. The partition plate 142A has a valley shape at the ground contact portion with the cylinder valve 143A, and the cylinder valve 143A has a mountain shape at the ground contact portion with the partition plate 142A, so that the partition plate 142 and the cylinder valve 143 in FIG. Different.

  According to the other partition plate 142A and the cylinder valve 143A, when the cylinder valve 143A is closed, it is difficult to generate a gap between the partition plate 142A and the cylinder valve 143A, and the movement of the inert gas 141 is sufficiently limited. can do. Therefore, it is possible to improve the stability of the hanging hand 1 when closed.

  As described above, according to the hanging hand 1 in the present embodiment, the cylinder inner cylinder 14 that slides in the vertical direction is provided, and the inside of the cylinder inner cylinder 14 is filled with the inert gas 141, and the partition plate 142, the cylinder valve 143, the elastic body 144 and the piston 132 divide the inert gas 141 inside the cylinder inner cylinder 14 into the space A and the space B, and operate the cylinder valve operation handle 151 provided on the suspension ring 15 to operate the inert gas. Since the cylinder inner cylinder 14 is slid by moving 141 between the space A and the space B, the height of the suspension 1 can be adjusted to an arbitrary height, so that convenience, stability and durability are achieved. All three of these can be satisfied. Therefore, passenger safety and ride comfort can be sufficiently ensured.

DESCRIPTION OF SYMBOLS 1 Gas pressure raising / lowering type lifting hand 11 Shaft 12 Hanging leather 13 Cylinder outer cylinder 131 Piston rod 132 Piston 14 Cylinder inner cylinder 141 Inert gas 142 Gas path 143 Cylinder valve 15 Suspension ring 151 Cylinder valve operation handle

Claims (7)

In a suspension attached to a transport vehicle,
A suspension ring for passengers to hold,
A cylinder inner cylinder attached to the upper part of the suspension ring;
A cylinder outer cylinder installed so as to cover all or part of the cylinder inner cylinder;
Hanging leather attached to the upper part of the cylinder outer cylinder,
A shaft for fixing the hanging leather,
The cylinder inner cylinder is
The piston and rod forming the cylinder outer cylinder are inserted from above,
Forming a sealed space in a state where the piston and the rod are inserted,
The sealed space is filled with an inert gas,
A suspension that slides in an axial direction of the rod based on a stress generated by a volume change of the inert gas. The cylinder inner cylinder is
A partition plate, a cylinder valve, and an elastic body are provided in the sealed space, and the sealed space is separated by the partition plate, the cylinder valve, and the elastic body, and the piston and the rod. In the sealed space, the first space and Forming a second space,
As the inert gas moves between the first space and the second space, a volume change of the inert gas occurs, and based on a stress generated by the volume change of the inert gas, The suspension hand according to claim 1, which slides in an axial direction of the rod. The cylinder valve is
At normal times, the elastic body abuts against the partition plate by the elastic force to limit the movement of the inert gas between the first space and the second space,
The opening is released from the partition plate against the elastic force of the elastic body at the time of opening, and the restriction on the movement of the inert gas between the first space and the second space is released. The suspension hand according to claim 2. The cylinder inner cylinder is
When the movement of the inert gas is restricted by the cylinder valve, the movement of the rod in the axial direction is fixed, and when the restriction of the movement of the inert gas is released by the cylinder valve, The suspension hand according to claim 3, which slides in an axial direction. The suspension ring is
The suspension hand according to claim 4, further comprising a cylinder valve operation handle for switching between movement restriction and release of the restriction of the inert gas by the cylinder valve. The cylinder inner cylinder is
When the restriction of the movement of the inert gas is released by the cylinder valve and a force in the vertically downward direction from the suspension ring is applied, the cylinder valve slides in the vertically downward direction,
6. The sliding in the vertically upward direction is performed when the restriction of the movement of the inert gas is released by the cylinder valve and a vertically downward force from the suspension ring is not applied. 6. Hanging hand. The partition plate is
It has a valley shape or a mountain shape at the contact point with the cylinder valve,
The cylinder valve is
The suspension hand according to claim 6, wherein the suspension has a mountain shape or a valley shape at a contact point with the partition plate.

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