DAMPING DEVICE AND FURNITURE HINGE COMPRISING THE SAME

• US 20170254133A1
• Filed: 08/30/2016
• Published: 09/07/2017
• Est. Priority Date: 03/02/2016
• Status: Active Grant

• Current Assignee: King Slide Technology Co., Ltd. (King Slide Works Co LTD), King Slide Works Co LTD
• Original Assignee: King Slide Technology Co., Ltd. (King Slide Works Co LTD), King Slide Works Co LTD
• Inventors: Liang, Hsiu-Chiang, Chen, Ken-Ching, Wang, Chun-Chiang
• Granted Patent: US 10,145,162 B2
• Time in Patent Office: Days
• CPC Class Codes: E05D 5/065 specially adapted for cabinets or furniture
• CPC Class Codes: E05F 3/108 with piston rod protruding from the closer housing; Telescoping closers
• CPC Class Codes: E05F 3/12 Special devices controlling the circulation of the liquid, e.g. valve arrangement E05F3/223 takes precedence; valves per se F16K
• CPC Class Codes: E05F 3/20 in hinges
• CPC Class Codes: E05F 5/006 for hinges having a cup-shaped fixing part, e.g. for attachment to cabinets or furniture
• CPC Class Codes: E05F 5/02 specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
• CPC Class Codes: E05Y 2201/21 Brakes
• CPC Class Codes: E05Y 2201/256 with pistons or vanes
• CPC Class Codes: E05Y 2201/264 linear
• CPC Class Codes: E05Y 2900/20 for furnitures, e.g. cabinets
• CPC Class Codes: F16F 9/3405 Throttling passages in or on piston body, e.g. slots F16F9/344, F16F9/3481 take precedence
• CPC Class Codes: F16F 9/346 Throttling passages in the form of slots arranged in cylinder walls

Abstract

A damping device includes a housing, a cover assembly, a piston rod, a piston and an elastic member. The housing has an inner wall defining a chamber, and an opening communicated with the chamber. The chamber is filled with a damping medium. The cover assembly is arranged adjacent to the opening of the housing. The piston rod penetrates through the cover assembly. The piston is connected to the piston rod and movable relative to the housing. The piston includes an extension part and an expansion part located between the piston rod and the extension part. A width of the expansion part is greater than a width of the piston rod. The elastic member is arranged in the chamber of the housing, and configured to provide an elastic force to the piston.

Claims

1. A damping device, comprising:

a housing having an inner wall defining a chamber, and an opening communicating with the chamber, the chamber being filled with a damping medium;

a cover assembly arranged adjacent to the opening of the housing;

a piston rod penetrating through the cover assembly;

a piston connected to the piston rod and movable relative to the housing, the piston comprising an extension part and an expansion part located between the piston rod and the extension part, wherein a width of the expansion part is greater than a width of the piston rod; and

an elastic member arranged in the chamber of the housing and configured to provide an elastic force to the piston.

2. The damping device of claim 1, wherein the inner wall of the housing has a groove configured to allow at least one portion of the damping medium to pass through.

3. The damping device of claim 1, wherein a gap is formed between the expansion part and the inner wall of the housing and configured to allow the at least one portion of the damping medium to pass through.

4. The damping device of claim 1, further comprising a base mounted to the piston and adjacent to the extension part, the base being arranged in the chamber of the housing and abutting against the elastic member.

5. The damping device of claim 4, wherein the piston further comprises a mounting part protruded from the extension part, and the base is mounted to the mounting part.

6. The damping device of claim 4, wherein the base has at least one hole configured to allow at least one portion of the damping medium to pass through.

7. The damping device of claim 4, further comprising a ring member movably mounted between the expansion part of the piston and the base.

8. The damping device of claim 1, wherein the piston rod, the extension part and the expansion part are integrally formed.

9. The damping device of claim 1, wherein a width of the extension part is greater than the width of the piston rod and smaller than the width of the expansion part.

10. The damping device of claim 1, wherein the piston rod and the piston is made of a metal material.

11. The damping device of claim 1, wherein the cover assembly comprises a cover body, a sleeve member and a seal ring, the cover body provides a space for accommodating the sleeve member, the piston rod penetrates through the sleeve member, and the seal ring is sleeved on the cover body.

12. A damping device, comprising:

a housing having an inner wall defining a chamber, and an opening communicating with the chamber, the chamber being filled with a damping medium;

a cover assembly arranged adjacent to the opening of the housing;

a piston rod extending out of the opening;

a piston connected to the piston rod and movable relative to the housing, the piston comprising an extension part and an expansion part located between the piston rod and the extension part, wherein the piston rod, the extension part and the expansion part are integrally formed, a width of the expansion part is greater than a width of the piston rod, and a gap is formed between the expansion part and the inner wall of the housing to allow at least one portion of the damping medium to pass through;

a base mounted to the piston and adjacent to the extension part, the base being arranged in the chamber of the housing;

a ring member movably mounted between the expansion part of the piston and the base; and

an elastic member arranged in the chamber of the housing and configured to provide an elastic force to the piston;

wherein when the piston rod is moved by a force along a first direction, the elastic member accumulates an elastic force and the ring member is located at a position relative to the expansion part of the piston for blocking the gap;

wherein when the force along the first direction no longer exists, the piston is moved along a second direction in response to the elastic force of the elastic member, such that the ring member is moved away from the position without blocking the gap.

13. The damping device of claim 12, wherein the inner wall of the housing has a groove configured to allow at least one portion of the damping medium to pass through.

14. A damping device, comprising:

a housing having a chamber, an inner wall of the chamber having a groove, the chamber being filled with a damping medium;

a piston arranged in the chamber of the housing;

a base mounted to the piston; and

a ring member arranged between the piston and the base;

wherein when the housing is moved relative to the piston, the damping medium can flow within the chamber through the groove for providing damping effect.

15. The damping device of claim 14, wherein the ring member is made of a flexible material.

16. The damping device of claim 14, wherein the damping medium comprises a fluid.

17. The damping device of claim 14, wherein the groove is arranged along a direction identical to a relative moving direction between the housing and the piston.

18. The damping device of claim 14, further comprising a piston rod connected to the piston, and an elastic member configured to provide an elastic force between the housing and the piston.

19. The damping device of claim 18, wherein the elastic member is arranged in the chamber of the housing.

20. The damping device of claim 18, wherein the base abuts against the elastic member.

21. The damping device of claim 18, wherein the housing further has an opening communicated with the chamber, the damping device further comprises a cover assembly arranged adjacent to the opening of the housing, and the piston rod penetrates through the cover assembly.

22. The damping device of claim 21, wherein the cover assembly comprises a cover body, a sleeve member and a seal ring, the cover body provides a space for accommodating the sleeve member, and the seal ring is sleeved on the cover body.

23. The damping device of claim 14, wherein the piston is made of a metal material.

24. The damping device of claim 14, wherein the base has a recessed part configured to allow the damping medium to pass through.

25. A furniture hinge, comprising:

a first component;

a second component pivoted to the first component; and

a damping device mounted to one of the first component and the second component, the damping device comprising;

a housing having a chamber, an inner wall of the chamber having a groove, the chamber being filled with a damping medium;

a piston arranged in the chamber of the housing;

a piston rod connected to the piston;

an elastic member configured to provide an elastic force between the housing and the piston; and

a ring member arranged in the chamber of the housing;

wherein when the first component is moved to switch from an open state to a close state relative to the second component, the housing and the piston rod of the damping device are moved relative to each other accordingly, and the damping medium flows within the chamber through the groove for providing damping effect to mitigate movement of the first component being closed relative to the second component.

26. The furniture hinge of claim 25, wherein the first component is a hinge cup, the second component is a hinge arm, and the damping device is mounted in the hinge cup.

27. The furniture hinge of claim 25, wherein the ring member is made of a flexible material, and the groove is arranged along a direction identical to a relative moving direction between the housing and the piston.

28. The furniture hinge of claim 25, wherein the damping device further comprises a base mounted to the piston, the ring member is located between the piston and the base, and the base abuts against the elastic member.

29. A damping device, comprising:

a housing having a chamber filled with a damping medium;

a piston arranged in the chamber of the housing;

a base arranged in the chamber of the housing; and

a ring member arranged between the piston and the base;

wherein a passage is formed between the ring member and the base for allowing the damping medium to flow through.

30. The damping device of claim 29, wherein the base has a surface facing the ring member, and at least one recessed part recessed from the surface, in order to allow the passage to be formed between the ring member and the at least one recessed part of the base.

31. The damping device of claim 30, wherein the at least one recessed part has an inclined surface inclined relative to the surface.

32. The damping device of claim 31, wherein the inclined surface is extended to a periphery of the base.

33. The damping device of claim 29, wherein the base has a surface facing the ring member, and at least one rib protruded from the surface, in order to allow the passage to be formed between the ring member and the surface of the base.

34. The damping device of claim 29, wherein the base comprises a plurality of protrusions configured to abut against the ring member, the passage is formed between the plurality of protrusions.

35. The damping device of claim 29, wherein an inner wall of the chamber has a groove, the groove is configured to allow the damping medium to flow within the chamber when the housing is moved relative to the piston.

36. The damping device of claim 35, wherein the groove is as arranged along a direction identical to a relative moving direction between the housing and the piston.

37. The damping device of claim 29, further comprising a piston rod connected to the piston, and an elastic member configured to provide an elastic force between the housing and the piston.

38. The damping device of claim 37, wherein the housing further has an opening communicated with the chamber, the damping device further comprises a cover assembly arranged adjacent to the opening of the housing, the piston rod penetrates through the cover assembly, the cover assembly comprises a cover body, a sleeve member and a seal ring, the cover body provides a space for accommodating the sleeve member, the seal ring is sleeved on the cover body.

39. A furniture hinge, comprising:

a first component;

a second component pivoted to the first component; and

a damping device mounted to one of the first component and the second component, the damping device comprising;

a housing having a chamber filled with a damping medium;

a piston arranged in the chamber of the housing;

a piston rod connected to the piston;

an elastic member configured to provide an elastic force between the housing and the piston;

a base arranged in the chamber of the housing; and

a ring member arranged between the piston and the base;

wherein a passage is formed between the ring member and the base for allowing the damping medium to flow through.

40. The furniture hinge of claim 39, wherein an inner wall of the chamber has a groove, when the first component is moved to switch from an open state to a close state relative to the second component, the housing and the piston rod of the damping device are moved relative each other accordingly, and the damping medium flows within the chamber through the groove.

41. The furniture hinge of claim 39, wherein the first component is a hinge cup, the second component is a hinge arm, and the damping device is mounted in the hinge cup.

42. The furniture hinge of claim 39, wherein the ring member is made of a flexible material.

43. The furniture hinge of claim 39, wherein the based is mounted to the piston, and the base abuts against the elastic member.