Unlock instant, AI-driven research and patent intelligence for your innovation.

Cylinder apparatus

A cylinder and piston rod technology, which is applied in the field of cylinder devices, can solve the problems of poor use convenience of the cylinder device, and achieve the effect of improving the convenience of use.

Inactive Publication Date: 2014-11-26
HITACHI AUTOMOTIVE SYST LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The conventional cylinder device has the problem of poor usability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cylinder apparatus
  • Cylinder apparatus
  • Cylinder apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0022] based on Figure 1 to Figure 4 The first embodiment of the present invention will be described.

[0023] figure 1 The cylinder device of the first embodiment is shown, and the cylinder device is a shock absorber, specifically, a gas strut in which gas is sealed as a working fluid. The cylinder device has: a cylindrical cylinder 11 sealed with gas (air or nitrogen) and a small amount of oil for lubrication; a piston rod 12 inserted from one end of the cylinder 11; A fixed piston 13 at one end in the body 11. A piston 13 is slidably fitted in the cylinder 11 , and the piston 13 divides the inside of the cylinder 11 into two chambers, a chamber 14 on the piston rod 12 side and a chamber 15 on the bottom side relative to the piston rod 12 .

[0024] The cylinder body 11 has a substantially bottomed cylindrical cylinder body 22 having a substantially cylindrical body portion 20 and a bottom portion 21 fixed to the body portion 20 so as to close one end (bottom side). . ...

no. 2 approach

[0084] Below, mainly based on image 3 and Figure 5 The second embodiment of the present invention will be described mainly based on the differences from the first embodiment. In addition, the same name and the same code|symbol are shown about the same part as 1st Embodiment.

[0085] In the second embodiment, the cam mechanism 115 provided between the cylinder block 11 and the piston rod 12 has a structure opposite to that of the first embodiment. That is, on the inner peripheral surface of the inner peripheral member 82 (the cylinder side member) constituting the cylinder block 11 , the protrusions 81 similar to those in the first embodiment extending in the cylinder radial direction are formed. In addition, on the outer peripheral surface of the main shaft portion 68 of the piston rod 12, a cam portion 86, a locking portion 87, and a restricting portion 88 (which are the same as in the first embodiment) are formed. Figure 5 (not shown in the figure) outer peripheral me...

no. 3 approach

[0099] The following, mainly based on image 3 and Image 6 A third embodiment of the present invention will be described focusing on differences from the first embodiment. In addition, the same part as 1st Embodiment is denoted by the same name and the same code|symbol.

[0100] In the third embodiment, a dust cover 140 covering a portion where the piston rod 12 protrudes from the cylinder 11 is provided. This dust cover 140 has a dust cover main body 143, and this dust cover main body 143 has a cylindrical part 141 and a cover part 142 which closes one end thereof, and has a substantially closed cylindrical shape, and is rotatably supported at the center of the cover part 142. Piston rod 12 is arranged. The dust cover 140 is configured to be relatively rotatable with respect to the piston rod 12 and the cylinder 11 in a state where movement in the axial direction with respect to the piston rod 12 is restricted.

[0101] On the dust cover main body 143, on the side of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder device in which usability is improved.SOLUTION: The cylinder device includes: a projection 81, which is provided on either one of the inner circumferential surface of a cylinder and the outer circumferential surface of a rod and extended in the radial direction; inclination parts 91, 93, which are provided on the other one of the inner circumferential surface of the cylinder and the outer circumferential surface of the rod and contact the projection 81 when the rod is in the maximum protrusion state to relatively rotate the cylinder to the rod and to guide the cylinder to a predetermined relative rotational position; and a lock part 87, which is provided on the other one of the inner circumferential surface of the cylinder and the outer circumferential surface of the rod and holds the projection 81 in contact with the projection 81 when the rod moves in insertion direction by facing the projection 81 in the axial direction in the maximum protrusion state of the rod where the cylinder and the rod are located at the predetermined relative rotational position.

Description

technical field [0001] The invention relates to a cylinder device. Background technique [0002] Regarding the cylinder device, there is a cylinder device in which when the piston rod protrudes from the cylinder to the maximum, it becomes a locked state in which the movement of the piston rod in the direction of insertion into the cylinder is automatically restricted (for example, refer to Patent Document 1 ). [0003] In addition, there is a cylinder device in which when the cylinder is rotated by protruding the piston rod from the cylinder to the vicinity of the maximum extension position, the piston rod is in a locked state that restricts the movement of the piston rod in the direction in which the cylinder is inserted (for example, refer to Patent Document 2). [0004] Furthermore, there is a cylinder device in which when the piston rod protrudes from the cylinder to the vicinity of the maximum extension position, the dust cover is tilted to automatically restrict the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/32
CPCB60G2202/24B60G2202/441B60G2204/46F16F9/0218F16F9/362F16F9/56F16F9/3235F16F9/36F16F2230/0041F16F2230/30
Inventor 岩谷真吾森俊介南原章吾
Owner HITACHI AUTOMOTIVE SYST LTD