TH45600B - Fluid pressure damper - Google Patents

Abstract

The DC60 fluid pressure damper comprises a cylinder 3 disposed in pipe 2 and a base supported by pipe 2 and a head assembly 31 fitted over the end of cylinder 3. A hole 2b is formed in pipe 2 facing the head assembly 31. A grommet-shaped stop assembly 101 is threaded onto the outer circumference of the head assembly 31. A bolt assembly 102, held in place by the head assembly 31 and constantly acted upon in the radial direction by a snap ring 103, passes through hole 2b, thus facilitating the connection of pipe 2 and cylinder 3. The fluid pressure damper comprises a cylinder 3 disposed in pipe 2 and a base supported by pipe 2 and a head assembly 31 fitted over the end of cylinder 3. A hole 2b is formed in pipe 2 facing the head assembly 31. The ring-shaped stop member 101 is threaded onto the outer circumference of the head member 31. The bolt member 102, which is held by the head member 31 and is actuated at all times in the radial direction by the snap ring 103, passes through the hole 2b, thus making the connection of the pipe 2 and the cylinder 3 easy.

Claims (9)

1. A fluid pressure damper comprising: a pipe (2); a cylinder (3) arranged in a pipe (2) and having an end and a base supported by a pipe (2); a head member (31) supported on an end of a cylinder (3); a hole (2b) formed in the pipe (2) and having an opening facing the head member (3); a stop member (101) formed into a ring and threaded onto the outside circumference of the head member (31); and a bolt member (102) passing radially through the stop member (101); a bolt member (102) comprising a base supported radially on the outside by the head member (31) and an end member (102c) passing through the hole (2b). 2. A fluid pressure damper as defined in claim 1, wherein the head member (31) is mounted on the outer circumference of the distal end of the cylinder (3). 3. The fluid pressure damper as defined in claim 1, wherein the distal end (102c) of the bolt assembly (102) passes through a hole (2b) having an intermediate space. 4. A fluid pressure damper as defined in claim 1, wherein the base of the bolt assembly (102) is supported by the head assembly (31) so as to allow movement along the centerline axis of the cylinder (3). 5. The fluid pressure damper as defined in claim 4, wherein the base of the bolted member (102) comprises a flange portion (102a) fixed in a gap formed between the stop member (101) and the head member (31), and the end portion (102c) is inserted through the stop member (101) with the gap in between. 6. A fluid pressure damper as defined in claim 1, further comprising a bottom member (22) screwed onto the pipe (2) and supporting the base of the cylinder (3). 7. The fluid pressure damper as defined in claim 6, further comprising a fluid cavity (R2) formed in a cylinder (3), a fluid reservoir (R) formed between the pipe (2) and the cylinder (3) to collect the fluid for operation, and a damping valve (6) clamped between the bottom member (21) and the cylinder (3) to allow the fluid to flow between the fluid cavity (R1) and the fluid reservoir (R). 8. A fluid pressure damper as defined in any one of claims 1 to 7, further comprising an outer tube (1) fitted over a tube (2) to provide a free-sliding feature, a piston rod (4) supported by the outer tube (1) and passing through the head assembly (31) to provide a free-sliding feature, and a piston (5) coupled to the piston rod (4) and contained in a cylinder (3) to provide a free-sliding feature. 9. The fluid pressure damper defined in claim 8, further comprising a spring (S) disposed between the head assembly (31) and the outer tube (1); the fluid pressure damper defined in claim 8, further comprising an oil locking member (71) fitted over the outer circumference of the piston rod (4) and intruding on the head assembly (31) when the piston (5) moves to a certain position in the cylinder (3), the head assembly (31), the oil locking member (71), and the piston rod (4) forming an oil locking gap that locks further movement of the piston (5) when the oil locking member intrudes on the head assembly (31).