JP2013181584A5

JP2013181584A5 -

Info

Publication number: JP2013181584A5
Application number: JP2012044697A
Authority: JP
Filing date: 2012-02-29
Publication date: 2015-04-09
Anticipated expiration: 2032-02-29

Description

上記の目的を達成するために、本発明のシリンダ装置は、シリンダ側部材の周面またはロッド側部材の周面のいずれか一方に設けられ径方向に延びる突起と、前記突起が設けられた周面と対向する前記シリンダ側部材の周面または前記ロッド側部材の周面のいずれか他方に設けられ、ロッドが最大突出状態になるときに前記突起が当接する周方向に延びる最大長当接部と、前記最大長当接部と軸方向に対向するように周方向に部分的に設けられ、前記突起が前記最大長当接部に当接した状態から縮長するときに当接し、それ以上前記ロッドが縮み方向に移動しないように規制するロック部と、前記ロッドが前記最大突出状態になるときに前記突起を前記最大長当接部の周方向のうち前記ロック部と対向する位置に導くよう、前記最大長当接部と前記ロック部との間に前記最大長当接部とは軸方向に離間して設けられた誘導部と、を有する構成とした。 In order to achieve the above object, a cylinder device according to the present invention includes a protrusion provided on one of a peripheral surface of a cylinder side member and a peripheral surface of a rod side member and extending in a radial direction, and a peripheral surface provided with the protrusion. A maximum length abutting portion that is provided on either the circumferential surface of the cylinder side member or the circumferential surface of the rod side member facing the surface and extends in the circumferential direction where the projection abuts when the rod is in the maximum projecting state when the maximum length abutment axially partially provided in the circumferential direction so as to face the front Symbol protrusion abuts when the reduced length from contact with the said maximum length abutment, it The lock portion for restricting the rod from moving in the contraction direction, and the protrusion at a position facing the lock portion in the circumferential direction of the maximum length contact portion when the rod is in the maximum protruding state. lead as the maximum length abutment And configured to have a guide portion provided axially spaced from said maximum length abutment between the locking portion.

Claims

A cylindrical cylinder;
In a cylinder device having one end inserted into one end of the cylinder and biased in a projecting direction and capable of axial movement and relative rotation with respect to the cylinder,
A cylinder side member provided to be restricted in movement in at least the axial direction with respect to the cylinder and a rod side member provided to be restricted in movement in at least the axial direction with respect to the rod are provided so as to be relatively rotatable.
A protrusion provided on one of the peripheral surface of the cylinder side member and the peripheral surface of the rod side member and extending in the radial direction;
A circumference that is provided on either the circumferential surface of the cylinder side member or the circumferential surface of the rod side member that faces the circumferential surface on which the projection is provided, and the projection abuts when the rod is in the maximum projecting state. A maximum length abutting portion extending in the direction;
The maximum length abutment axially partially provided in the circumferential direction so as to face the front Symbol protrusion abuts when the reduced length from contact with the said maximum length abutment, the more A lock portion that restricts the rod from moving in the shrinking direction;
When the rod is in the maximum protruding state, the protrusion is guided between the maximum length contact portion and the lock portion so as to guide the protrusion to a position facing the lock portion in the circumferential direction of the maximum length contact portion. A guide portion that is provided apart from the maximum length contact portion in the axial direction;
A cylinder device comprising:

The maximum length abutting portion is a lockable position where a range in the circumferential direction facing the lock portion is a lockable position where the rod cannot move in the contraction direction when the protrusion is positioned in the range. 2. The cylinder device according to claim 1, wherein a circumferential range that does not face the cylinder is a lock release position at which the rod can move in the contraction direction when the protrusion is located in the range.

The cylinder device according to claim 2, wherein the lockable position of the maximum length abutting portion is a flat portion or a concave portion into which the protrusion is fitted .

4. The cylinder device according to claim 2, wherein a recess portion into which the protrusion is fitted or a protrusion portion to which the protrusion comes into contact is provided at the lock release position of the maximum length contact portion.

A protrusion is provided between the lockable position and the unlocking position in a circumferential direction so that the protrusion can be overcome when the protrusion moves in the circumferential direction along the maximum length contact portion. The cylinder device according to any one of claims 2 to 4.

6. The lock portion and the guide portion are respectively formed on one side and the other side of an overhanging portion that is provided apart from the maximum length contact portion in the axial direction. The cylinder device according to any one of the above.

The cylinder device according to claim 1, wherein the lock portion is wider than a diameter of the protrusion.

The cylinder device according to any one of claims 1 to 7, wherein the lock portion has a concave surface that faces the maximum length contact portion.