# US 10,865,596 B2 · Damping device and furniture part comprising the same

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- Number: US 10,865,596 B2
- Document ID: US10865596B2
- Status: Granted
- Kind: B2
- Application number: 15/976,820
- Filed: 2018-05-10
- Published: 2019-05-09
- Granted: 2020-12-15
- Earliest claimed: 2017-11-06
- Assignees: King Slide Works Co., Ltd.; King Slide Technology Co., Ltd.
- Applicants: King Slide Works Co., Ltd.; King Slide Technology Co., Ltd.
- Inventors: Ken-Ching Chen; Hsiu-Chiang Liang; Chun-Chiang Wang
- Web page: https://patentgrep.com/patent/US10865596B2

## CPC

- E05F 5/027: {with closing action}
- E05F 1/16: for sliding wings
- E05F 5/10: with piston brakes
- F16F 9/5126: {Piston, or piston-like valve elements (F16F9/504 takes precedence)}
- E05F 3/12: Special devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K)
- E05Y 2201/22: Locks
- E05Y 2201/232: by automatically acting means
- E05Y 2201/256: with pistons or vanes
- E05Y 2201/458: Valves
- E05Y 2400/3014: Back driving the transmission or motor
- E05Y 2800/24: of springs and brakes
- E05Y 2900/20: for furniture, e.g. cabinets
- F16F 9/348: Throttling passages in the form of annular discs {or other plate-like elements which may or may not have a spring action}, operating in opposite directions {or singly, e.g. annular discs positioned on top of the valve or piston body (F16F9/341, F16F9/3415 take precedence)}
- F16F 9/3484: {characterised by features of the annular discs per se, singularly or in combination}
- F16F 9/483: {characterised by giving a particular shape to the cylinder, e.g. conical}
- F16F 13/007: {the damper being a fluid damper}
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

A damping device includes a housing, a piston and a controller. The housing defines a chamber filled with a damping medium. The piston is movable in the chamber and includes a passage for allowing the damping medium to pass through. The controller includes a control member and a resilient member. The control member is capable of being moved toward the passage of the piston or closing a portion or all portions of the passage of the piston in response to a speed of the piston.

## Claims

### Claim 1

A damping device, comprising:
a housing having an inner wall, a top portion and a bottom portion, the inner wall having a first inner diameter and a second inner diameter from the top portion to the bottom portion, and the first inner diameter being greater than the second inner diameter;
a chamber being defined by the inner wall and having a damping medium filled therewith;
a base movable in the chamber of the housing;
a piston movable in the chamber of the housing, both of the base and the piston comprising at least one passage for allowing the damping medium to pass through; and
a controller arranged in the chamber of the housing, the controller comprising a control member and a resilient member;
a spring directly connected to the base, the spring configured to provide an elastic force to one of the piston and the base;
wherein the chamber between the piston and the top portion of the housing defines a first zone, the chamber between the piston and the bottom portion of the housing defines a second zone, the damping medium is filled in the first zone and the second zone, and the first zone communicates with the second zone via the at least one passage of the base and the piston;
wherein when the piston is moved relative to the housing by a damping speed, the control member is moved toward the passage of the piston or closes a portion or all portions of the passage of the piston in response to the damping speed;
wherein when the control member closes the portion or the all portions of the passage of the piston, the control member is capable of controlling an amount of the damping medium passing through the passage of the piston;
wherein the spring and the base are located in the second zone, and when the damping device is providing a damping effect, the piston is moved from a position in the housing with the first inner diameter to a position in the housing with the second inner diameter.

### Claim 2 (depends on 1)

The damping device of claim 1, wherein the resilient member generates a resilient force to the control member in response to the damping speed, and the controller is disposed between the piston and the base, wherein the base is connected to the piston via an extending portion, and the controller is movably mounted on the extending portion.

### Claim 3 (depends on 1)

The damping device of claim 1, wherein the piston is moved in the chamber of the housing in a substantially linear direction.

### Claim 4 (depends on 1)

The damping device of claim 1, wherein the resilient member is a disc spring.

### Claim 5 (depends on 1)

The damping device of claim 1, wherein the control member defines a space, and the space is for accommodating the resilient member.

### Claim 6 (depends on 4)

The damping device of claim 4, wherein the piston comprises a connecting portion and a contacting portion, the connecting portion and the contacting portion are spaced by a step difference, the base is connected to the connecting portion of the piston via an extending portion, and the resilient member deforms elastically through the step difference.

### Claim 7 (depends on 1)

The damping device of claim 1, wherein the control member and the resilient member are integrally formed as a unitary part.

### Claim 8 (depends on 7)

The damping device of claim 7, wherein the piston comprises a connecting portion and a contacting portion, the connecting portion and the contacting portion are spaced by a step difference, the base is connected to the connecting portion of the piston via an extending portion, and the resilient member deforms elastically through the step difference.

### Claim 9 (depends on 1)

The damping device of claim 1, further comprising an extending member movable relative to the housing via the piston, and a portion of the extending member extending out of the chamber.

### Claim 10 (depends on 1)

The damping device of claim 1, wherein the inner wall has the first inner diameter, the second inner diameter and a third inner diameter from the top portion to the bottom portion of the housing, and the second inner diameter is greater than the third inner diameter.

### Claim 11

A damping device, comprising:
a housing having an inner wall, a top portion and a bottom portion, the inner wall defining a chamber and having a first inner diameter and a second inner diameter from the top portion to the bottom portion, the first inner diameter being greater than the second inner diameter, and the chamber having a damping medium filled therewith;
a piston movable in the chamber, wherein the chamber between the piston and the top portion of the housing defines a first zone, the chamber between the piston and the bottom portion of the housing defines a second zone, and the damping medium is filled in the first zone and the second zone;
a base movable in the chamber with the piston, and both of the base and the piston comprising a passage respectively for allowing the damping medium to pass through, such that the first zone communicates with the second zone;
a spring directly connected to the base, the spring configured to provide an elastic force to one of the piston and the base; and
a controller located between the passage of the base and the passage of the piston;
wherein the spring and the base are located in the second zone, and when the damping device is providing a damping effect, the piston is moved from a position in the housing with the first inner diameter to a position in the housing with the second inner diameter.

### Claim 12 (depends on 11)

The damping device of claim 11, wherein the base is connected to the piston via an extending portion, and the controller is movably mounted on the extending portion.

### Claim 13 (depends on 12)

The damping device of claim 12, wherein the controller comprises a control member and a resilient member, when the control member is in a predetermined position, the control member is capable of closing a portion or all portions of the passage of the piston, the resilient member provides a resilient force corresponding to the predetermined position, and when the resilient force is released, the control member departs from the predetermined position.

### Claim 14 (depends on 12)

The damping device of claim 12, further comprising an extending member, the extending member being movable relative to the housing via the piston.