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Cylinder apparatus

A technology of cylinder body and annular disk, which is applied in the design features of spring/shock absorber, spring, shock absorber, etc., which can solve the problem of difficult air discharge and achieve the effect of cost reduction

Active Publication Date: 2018-03-27
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] For the cylinder device as a shock absorber, various structures have been proposed in order to be able to cope with the required damping force characteristics and the target vehicle to be installed, but when the cylinder device is used, for example, in a railway vehicle, because Compared with the case of automobiles, there are few cases where large strokes are performed, so it is difficult to discharge air, so it is necessary to find a way to discharge the air

Method used

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Embodiment Construction

[0044] Below, based on Figure 1 to Figure 29 Specific embodiments of the present invention will be described in detail.

[0045] The cylinder devices 1a to 1e according to the first to fifth embodiments can be used as an anti-yaw damper for a railway vehicle installed between a bogie and a vehicle body in a horizontal position. First, based on Figure 1 to Figure 10 The cylinder device 1a of the first embodiment will be described.

[0046] Such as figure 1 As shown, the cylinder device 1a of the first embodiment is an overflow type, and includes an outer cylinder 2 extending in the horizontal direction in an installed state mounted on a railway vehicle, and is disposed inside the outer cylinder 2 so as to be connected to the outer cylinder 2. Concentric cylinder 3. Openings at both ends of the outer cylinder 2 and the cylinder body 3 are closed by a front end plate 4 and a rear end plate 5, respectively. An annular liquid storage chamber 6 is formed between the inner wal...

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Abstract

Provided is a cylinder apparatus with which problems such as cost can be solved by simplifying an air vent structure and improving workability relating to assembly and machining, while maintaining airdischarge performance. In a cylinder apparatus (1a), a front-side annular disc (40) is provided between a front-side end plate (4) and a cylinder (3), a cylinder-side opening (45) is provided to thefront-side annular disc (40), a reservoir chamber-side opening (48), which communicates with the cylinder-side opening (45), is provided to the front-side annular disc (40), and rotation-restraining parts (27, 43) for restraining relative rotation are formed between the front-side end plate 4 and the front-side annular disc (40). The air vent structure is thereby simplified and workability relating to assembly and machining is improved while air discharge performance is maintained, which can contribute to reducing costs.

Description

technical field [0001] The present invention relates to a cylinder device as a shock absorber for, for example, a railway vehicle or the like. Background technique [0002] For the cylinder device as a shock absorber, various structures have been proposed in order to be able to cope with the required damping force characteristics and the target vehicle to be installed, but when the cylinder device is used, for example, in a railway vehicle, because Compared with the case of automobiles, there are few cases where a large stroke is performed, so it is difficult to discharge the air, and it is necessary to find a way to discharge the air. [0003] For example, Patent Document 1, which is a prior art, discloses, as a multi-tube horizontal hydraulic shock absorber, a shock absorber having a structure in which both ends of an outer cylinder and an inner cylinder arranged concentrically are closed by end plates so that The two are constituted as an annular reservoir in which liqui...

Claims

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Application Information

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IPC IPC(8): F16F9/40F16F9/34
CPCF16F9/187F16F9/348F16F2230/0041
Inventor 柴原和晶
Owner HITACHI ASTEMO LTD