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Rotary damper device

A damper and housing technology, applied in the direction of shock absorbers, shock absorbers, liquid shock absorbers, etc., can solve the problems of low durability, difficult braking torque accuracy, valve damage, etc., to improve durability and accuracy. Effect

Inactive Publication Date: 2005-05-11
NIFCO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the valve of the above-mentioned damper device is movable and rotatable, the required braking torque cannot be obtained by means of the viscous fluid passing through the gap with the casing, and it is difficult to maintain a certain accuracy of the braking torque.
[0004] In addition, since a large load is applied to the valve, the valve may be damaged and its durability is low.

Method used

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Embodiment Construction

[0051] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0052] FIG. 1 is an exploded perspective view of a damper device according to an embodiment of the present invention.

[0053] In Fig. 1, D represents the damper device, and is made up of the following parts: by having rigid synthetic resin such as the housing 11 that polycarbonate is made; For example, a cover 21 made of polycarbonate; a second valve 31 made of synthetic resin, such as polyacetal, installed on the second rotor wing at the bottom of the housing 11; viscous fluid silicone oil 41 in the casing 11 (accommodation portion 15); rotatably installed in the casing 11, having a part of the shaft portion 52 protruding from the through hole 22 of the cover 21 to the outside, made of synthetic resin such as polycondensation Rotor 51 made of aldehyde; Installed on the first rotating wing 54 on this rotor 51, is made of non-swellability to viscous liquid such as silico...

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Abstract

A damper device includes a housing; a viscous fluid filled inside the housing; a rotor rotatably disposed inside the housing; and a sealing member for preventing the viscous fluid from leaking through the rotor and the housing. A rotational wing with a viscous-fluid passage is provided on one of the housing and the rotor. The rotational wing moves relative to the viscous fluid in a circumferential direction, and extends in a radial direction for dividing a housing portion of the housing filled with the viscous fluid. A valve is provided on the rotational wing, and is formed of an elastic member capable of deforming elastically. The valve opens the viscous-fluid passage when the rotor rotates in one direction, and blocks the viscous-fluid passage when the rotor rotates in the other direction.

Description

technical field [0001] The present invention relates to a one-way damper device that brakes, for example, the rotation of a door in an opening direction but does not brake the rotation of a door in a closing direction. Background technique [0002] The above-mentioned damper device is proposed in Patent Document 1 - Japanese Patent No. 2581655. The casing, the viscous fluid contained in the casing, is rotatably mounted in the casing, and has a rotor with a part of the shaft protruding from the casing. , to prevent the viscous fluid from leaking from between the shaft of the rotor and the casing; the protrusion with the fluid passage on the rotor is arranged in the axial direction, and the protrusion with the first fluid passage and the second fluid passage is covered on the protrusion. wherein, when the rotor rotates in one direction in the first fluid channel, the flow of viscous fluid to the fluid channel of the protrusion is a small flow rate; in the second fluid channel,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/14E05F3/14
CPCE05F3/12E05F3/14F16F9/12F16F9/145
Inventor 濑户康彦西山雅幸
Owner NIFCO INC
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