CLEARANCE ADJUSTMENT DEVICE FOR BRAKE CYLINDER, AND BRAKE CYLINDER WITH THE SAME

Title:

CLEARANCE ADJUSTMENT DEVICE FOR BRAKE CYLINDER, AND BRAKE CYLINDER WITH THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/055319

Kind Code:

A1

Abstract:

A clearance adjustment device for a brake cylinder, having a push rod for operating a vehicle brake device and a guide member attached to the push rod and movable with the push rod, wherein friction force (coupling force) between the push rod and the guide member is stably obtainable. An uneven surface (12) is provided on the outer circumferential surface of the push rod (8), and the uneven surface has ridges and grooves alternated in the direction of the movement of the push rod. An O-ring reception space (27) opened on the uneven surface (12) side of the rod is formed in the guide member (22), and O-rings (28) are placed in the space (27). When the O-rings (28) are compressed in the axial direction of the rod and engaged with the uneven surface (12), the guide member (22) and the push rod (8) are connected together. When the stroke of the push rod (8) is increased by wear of a brake and the guide member (22) is in contact with a projection (17), return force acting on the guide member (22) causes the O-rings (28) to ride over the ridges of the uneven surface (12) and deform. As a result, the push rod (8) is displaced relative to the guide member (22) to adjust a clearance.

More Like This:

WO/2018/092272	ELEVATOR BRAKE DEVICE
WO/2018/172788	DRUM BRAKE

Inventors:

ASANO YOSHIO (JP)

Application Number:

PCT/JP2006/322465

Publication Date:

May 18, 2007

Filing Date:

November 10, 2006

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NABTESCO CORP (JP)
ASANO YOSHIO (JP)

International Classes:

F16D65/54; F16D65/22

Foreign References:

JPS516820B1	1976-03-02
JP2004142925A	2004-05-20
JPS57136053U	1982-08-25
JPH07305729A	1995-11-21
JPH0667725A	1994-03-11

Other References: