Back to results
US 11,078,982 B2Granted
Damper
AssigneeHitachi Astemo, Ltd.
InventorMikio Yamashita
Life of this patent
Estimating the term…
Abstract
A damper includes a cylinder in which a working fluid is enclosed, a piston which is slidably inserted into the cylinder, a piston rod which is connected with the piston, a disk valve which is provided to restrict a flow of a working fluid caused by sliding of the piston and to close an opening portion of a tubular case member, an annular seal portion which is provided on at least one surface side of the disk valve, and a chamber which is partitioned by the disk valve and the seal portion. Recessed portions and projecting portions are alternately formed in the disk valve.
Claims11
A damper comprising:
- a cylinder in which a working fluid is enclosed;
- a piston which is slidably inserted into the cylinder;
- a piston rod which is connected with the piston;
- a disk valve which is provided to restrict a flow of a working fluid caused by sliding of the piston and to close an opening portion of a tubular case member;
- an annular seal portion which is provided on at least one surface side of the disk valve;
- and
- a chamber which is partitioned by the disk valve and the seal portion,
- wherein recessed portions and projecting portions are alternately formed in the disk valve, and
- wherein the recessed portions and the projecting portions are provided at positions
- where the seal portion of the disk valve is fixedly attached.
7 more elements
A damper comprising:
- a cylinder in which a working fluid is enclosed;
- a piston which is slidably inserted into the cylinder;
- a piston rod which is connected with the piston;
- a disk valve which is provided to restrict a flow of a working fluid caused by sliding of the piston and to close an opening portion of a tubular case member;
- an annular seal portion which is provided on at least one surface side of the disk valve;
- and
- a chamber which is partitioned by the disk valve and the seal portion,
- wherein recessed portions and projecting portions are alternately formed in the disk valve, and
- wherein the recessed portions and the projecting portions are positioned on the radially inner circumferential side with respect to the position where the seal portion of the disk valve is fixedly attached.
6 more elements
A damper comprising:
- a cylinder in which a working fluid is enclosed;
- a piston which is slidably fitted into the cylinder and partitions an inside of the cylinder into two cylinder chambers;
- a piston rod of which one end side is connected with the piston and of which an opposite end side extends to an outside of the cylinder;
- a first passage in which a working fluid flows out from one cylinder chamber in accordance with movement of the piston;
- a second passage which is provided to be parallel to the first passage;
- a damping force generation mechanism which is provided in the first passage and generates a damping force;
- a tubular case member in which at least a part of the second passage is formed;
- a shaft portion which is disposed inside the case member;
- an annular bendable disk which is disposed inside the case member while being internally penetrated by the shaft portion, which is supported by an inner circumferential side or an outer circumferential side, and in which an annular elastic member sealing a part between the disk and the case member or a part between the disk and the shaft portion is provided on a non-support side;
- and
- two case chambers which are provided to be defined by the disk and the elastic member inside the case member,
- wherein the disk is provided to block circulation of a working fluid to at least one side in the second passage,
- wherein an annular gap is provided between the disk and the case member or the shaft portion, the elastic member is provided to be fixedly attached to both surfaces of the disk with the gap therebetween, a seal portion is provided on one surface side of the disk, and a stopper portion is provided on an opposite surface side, and
- wherein the elastic member is partially and fixedly attached to the opposite surface of the disk in a circumferential direction.
11 more elements
A damper comprising:
- a cylinder in which a working fluid is enclosed;
- a piston which is slidably fitted into the cylinder and partitions an inside of the cylinder into two cylinder chambers;
- a piston rod of which one end side is connected with the piston and of which an opposite end side extends to an outside of the cylinder;
- a first passage in which a working fluid flows out from one cylinder chamber in accordance with movement of the piston;
- a second passage which is provided to be parallel to the first passage;
- a damping force generation mechanism which is provided in the first passage and generates a damping force;
- a tubular case member in which at least a part of the second passage is formed;
- a shaft portion which is disposed inside the case member;
- an annular bendable disk which is disposed inside the case member while being internally penetrated by the shaft portion, which is supported by an inner circumferential side or an outer circumferential side, and in which an annular elastic member sealing a part between the disk and the case member or a part between the disk and the shaft portion is provided on a non-support side;
- and
- two case chambers which are provided to be defined by the disk and the elastic member inside the case member,
- wherein the disk is provided to block circulation of a working fluid to at least one side in the second passage,
- wherein an annular gap is provided between the disk and the case member or the shaft portion,
- wherein the elastic member is provided to be fixedly attached to both surfaces of the disk with the gap therebetween, a seal portion is provided on one surface side of the disk, and a stopper portion is provided on an opposite surface side, and
- wherein a plurality of cut portions are provided on the gap side of the disk.
12 more elements
Dependencies are inferred from the claim text.