Abstract: Provided is a bumper cap to be attached to a shock absorber main body, and includes a cover part having an opening at one end, having a bottom part and a through hole penetrating the bottom part at another end, and configured to cover the shock absorber main body, and a plurality of protruding parts protruding from the bottom part of the cover part toward the opening side, and in which a gap is formed between the adjacent protruding parts, in which a suppression part configured to suppress a rotation of a fluid, which has flowed into a space between the inside of the cover part and the shock absorber main body from an outside of the cover part through the through hole, in the cover part is further provided.

Abstract: A flow of hydraulic oil induced by sliding movement of a piston in a cylinder is controlled by a pilot-type main valve and a pilot valve, which is a pressure control valve, to generate a damping force. The pilot valve is adjusted in its valve-opening pressure with the thrust of a solenoid and adjusts the pressure in a back pressure chamber to control the valve-opening pressure of the main valve. A baffle plate is provided in a reservoir to isolate the surface of hydraulic oil in the reservoir from an inlet port through which the hydraulic oil flows into the reservoir from a damping force generating mechanism, thereby suppressing the occurrence of aeration and cavitation. The baffle plate is secured by inserting a connecting port through a positioning opening and holding a separator tube with a pair of arm portions.

Abstract: A flow of hydraulic oil induced by sliding movement of a piston in a cylinder is controlled by a pilot-type main valve and a pilot valve, which is a pressure control valve, to generate a damping force. The pilot valve is adjusted in its valve-opening pressure with the thrust of a solenoid and adjusts the pressure in a back pressure chamber to control the valve-opening pressure of the main valve. A baffle plate is provided in a reservoir to isolate the surface of hydraulic oil in the reservoir from an inlet port through which the hydraulic oil flows into the reservoir from a damping force generating mechanism, thereby suppressing the occurrence of aeration and cavitation. The baffle plate is secured by inserting a connecting port through a positioning opening and holding a separator tube with a pair of arm portions.

Abstract: A flow of hydraulic oil induced by sliding movement of a piston in a cylinder is controlled by a pilot-type main valve and a pilot valve, which is a pressure control valve, to generate a damping force. The pilot valve is adjusted in its valve-opening pressure with the thrust of a solenoid and adjusts the pressure in a back pressure chamber to control the valve-opening pressure of the main valve. A baffle plate is provided in a reservoir to isolate the surface of hydraulic oil in the reservoir from an inlet port through which the hydraulic oil flows into the reservoir from a damping force generating mechanism, thereby suppressing the occurrence of aeration and cavitation. The baffle plate is secured by inserting a connecting port through a positioning opening and holding a separator tube with a pair of arm portions.

Abstract: A shock absorber which facilitates an insertion/fixation operation. The shock absorber includes a spring-force application unit (84) for applying a force in a valve-closing direction to a disc valve while allowing the fixed shaft to be inserted therethrough; and a cylindrical member (47) for allowing the fixed shaft (21) to be inserted therethrough. The disc valve includes a plurality of valve discs (53) to (58). The cylindrical member is inserted into each of the valve discs (53) to (58) and the spring-force application unit (84), in which: the cylindrical member (47) is provided so as to have a radially extending gap on an inner side of the inner seat (31) of the valve main body (14).

Abstract: A piston with a piston rod coupled thereto is inserted in a cylinder, which sealingly contains oil. An oil flow generated by movement of the piston is controlled by a damping force generation mechanism, thereby generating a damping force. A separator tube is disposed around the cylinder, and the oil is transmitted to the damping force generation mechanism through a branch tube integrally formed on a cylindrical sidewall of the separator tube. The branch tube is tapered at the outer circumferential portion thereof with the outer diameter thereof reducing toward the distal end of the branch tube.

Abstract: A flow of hydraulic oil induced by sliding movement of a piston in a cylinder is controlled by a pilot-type main valve and a pilot valve, which is a pressure control valve, to generate a damping force. The pilot valve is adjusted in its valve-opening pressure with the thrust of a solenoid and adjusts the pressure in a back pressure chamber to control the valve-opening pressure of the main valve. A baffle plate is provided in a reservoir to isolate from each other the surface of hydraulic oil in the reservoir and an inlet port through which the hydraulic oil flows into the reservoir from a damping force generating mechanism, thereby suppressing the occurrence of aeration and cavitation. The baffle plate is secured by inserting a connecting port through a positioning opening and holding a separator tube with a pair of arm portions.

Abstract: A piston with a piston rod coupled thereto is inserted in a cylinder, which sealingly contains oil. An oil flow generated by movement of the piston is controlled by a damping force generation mechanism, thereby generating a damping force. A separator tube is disposed around the cylinder, and the oil is transmitted to the damping force generation mechanism through a branch tube integrally formed on a cylindrical sidewall of the separator tube. The branch tube is tapered at the outer circumferential portion thereof with the outer diameter thereof reducing toward the distal end of the branch tube.

Abstract: Provided is a shock absorber which facilitates an insertion/fixation operation. The shock absorber includes a spring-force application unit (84) for applying a force in a valve-closing direction to the disc valve while allowing the fixed shaft to be inserted through the spring-force application units (53) to (58); and a cylindrical member (47) for allowing the fixed shaft (21) to be inserted therethrough, the cylindrical member being inserted into each of the valve discs (53) to (58) and the spring-force application unit (84), in which: the cylindrical member (47) is provided so as to have a radially extending gap on an inner side of the inner seat (31) of the valve main body (14).

Abstract: A cylinder apparatus includes a cylinder having a hydraulic fluid sealed therein. A piston rod is connected at one end thereof to a piston slidably fitted in the cylinder. The other end of the piston rod extends to the outside of the cylinder through a seal device provided at the opening end of the cylinder. The seal device has a rod seal and a backup mechanism that presses the rod seal against the piston rod. The backup mechanism has a ring-shaped resilient member provided on the upper surface of a ring-shaped support plate clamped between a rod guide and a seal cap. The ring-shaped resilient member is elastically deformed by an annular tapered wall formed on the seal cap, thereby applying a backup force to the rod seal. Thus, the force with which the rod seal is pressed against the piston rod is kept substantially constant.