CN111485783A

CN111485783A - Buffer device

Info

Publication number: CN111485783A
Application number: CN201910079952.XA
Authority: CN
Inventors: 陈庚金; 梁秀江; 王俊强
Original assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Current assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-08-04
Anticipated expiration: 2039-01-28
Also published as: CN111485783B

Abstract

The invention relates to a buffer device, which comprises a shell, a piston, a base, a ring piece, a piston rod and a sealing element. The shell comprises a chamber, and a buffer medium is filled in the chamber; the piston is arranged in the accommodating chamber of the shell and is provided with a first side and a second side; the base is mounted on a first side of the piston; the ring is arranged between the piston and the base; the piston rod is connected with the second side of the piston; the seal is mounted to the piston rod.

Description

Buffer device

Technical Field

The present invention relates to a damping mechanism, and more particularly to a damping device for a furniture assembly.

Background

Generally, certain furniture items, such as doors or cabinets, are provided with cushioning devices. The buffer device can be used for providing a buffer function when a first member is opened relative to a second member to reduce the force when the first member is closed relative to the second member. A damping device for furniture hinges has been disclosed, for example, in U.S. patent publication No. US10,145,162B2. A cover assembly is disclosed that includes a cover, a sleeve, and a seal ring. The cover body covers the opening of the shell, and the sealing ring is sleeved on the cover body and used for sealing the opening of the shell. On the other hand, the sleeve is used for being sleeved on the periphery of the piston rod and also has the sealing effect. Further, the housing of the buffering device has a sealing effect through the covering assembly.

However, as the market demands are different, if a different product can be developed, more choices will be made for the market.

Disclosure of Invention

The invention aims to provide a buffer device capable of providing a buffer function so as to achieve the buffer function in an extremely short stroke.

According to one aspect of the present invention, a damping device includes a housing, a piston, a base, a ring, a piston rod, and a seal. The shell comprises a chamber, and a buffer medium is filled in the chamber; the piston is arranged in the accommodating chamber of the shell and is provided with a first side and a second side; the base is mounted on a first side of the piston; the ring is arranged between the piston and the base; the piston rod is connected with the second side of the piston; the seal is mounted to the piston rod.

Preferably, the buffering device further comprises a cover mounted on the housing.

Preferably, the piston rod passes through the cover body and partially extends out of the accommodating chamber.

Preferably, the seal is located between the second side of the piston and the cover.

Preferably, the seal is movably mounted on the piston rod.

Preferably, the seal has a flange substantially proximate to an inner wall of the chamber of the housing.

Preferably, the damping device further comprises a partition disposed in the chamber of the housing and between the second side of the piston and the seal.

Preferably, the damping device further comprises a flexible member for providing a flexible force to the sealing member.

Preferably, the inner wall of the chamber of the housing has a groove, and the buffer medium can flow in the chamber through the groove when the housing and the piston are relatively displaced.

Preferably, the ring is made of a flexible material.

Preferably, the buffer medium comprises a fluid.

Preferably, the grooves are disposed in the same direction as the direction of relative displacement between the housing and the piston.

Preferably, the damping device further comprises an elastic member for providing elastic force between the housing and the piston.

Preferably, the elastic member is disposed in the chamber of the housing, and the base abuts against the elastic member.

Preferably, the housing further includes an opening communicating with the chamber, and the cover is disposed adjacent to the opening of the housing.

Preferably, the piston is integral with the piston rod.

According to another aspect of the present invention, a damping device for a furniture hinge includes a first member and a second member, wherein the second member is pivotally connected to the first member, the damping device is mounted on one of the first member and the second member, and the damping device includes a housing, a cover, a piston, a base, a ring, a piston rod, and a sealing member. The shell comprises a chamber and an opening, and a buffer medium is filled in the chamber; the cover body is arranged on the shell and used for sealing the opening of the shell; the piston is arranged in the accommodating chamber of the shell and is provided with a first side and a second side; the base is mounted on a first side of the piston; the ring is arranged between the piston and the base; the piston rod is connected with the second side of the piston and penetrates through the cover body to partially extend out of the accommodating chamber; the seal is movably mounted to the piston rod.

Drawings

For further explanation of the above objects, structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, in which:

fig. 1 is a schematic combination diagram of a buffering device according to an embodiment of the present invention.

FIG. 2 is a schematic half-sectional view of a cushioning device according to an embodiment of the present invention.

Fig. 3 is an exploded view of a buffering device according to an embodiment of the present invention.

Fig. 4 is an assembly view of the buffering device according to the embodiment of the present invention.

Fig. 5 is a schematic view showing the relative displacement between the housing and the piston of the damping device according to the embodiment of the present invention.

FIG. 6 is an enlarged view of the area A in FIG. 5 to show the relationship between the ring and a gap.

Fig. 7 is a schematic view showing the continued relative displacement of the housing and the piston of the damping device according to the embodiment of the present invention.

Fig. 8 shows an enlarged view of area a of fig. 7 to show that a ring can be used to plug the gap.

Fig. 9 is a perspective view of a damper device according to an embodiment of the present invention applied to a furniture hinge.

Detailed Description

As shown in fig. 1 to 3, a damping device 20 according to an embodiment of the present invention includes a housing 22, a cover 24, a piston 26, a base 28, a ring 30, a piston rod 32, and a sealing member 34. Preferably, a partition 36, a flexible member 38 and a resilient member 40 are also included. Herein, the flexible element 38 and the elastic element 40 are exemplified by a first spring and a second spring, respectively, but the implementation is not limited thereto.

The housing 22 includes a chamber 42 and an opening 44, the opening 44 is connected to the chamber 42.

The cover 24 is mounted on the housing 22 to close the opening 44 of the housing 22.

The piston 26 is disposed within the chamber 42 of the housing 22, and the piston 26 has a first side S1 and a second side S2. Preferably, the first side S1 and the second side S2 are opposite sides. Specifically, the piston 26 has a first portion 26a and a second portion 26 b. Preferably, a third portion 26c is also included. The first portion 26a is located between the second portion 26b and the third portion 26 c. Further, the second portion 26b is close to the first side S1, and the third portion 26c is close to the second side S2. Preferably, the third portion 26c is larger in size than the first portion 26a, and the first portion 26a is larger in size than the second portion 26 b. In other words, the profile of the third portion 26c is greater than the profile of the first portion 26a, and the profile of the first portion 26a is greater than the profile of the second portion 26 b.

The base 28 is mounted to the first side S1 of the piston 26. For example, the base 28 is mounted to the second portion 26b of the piston 26. Preferably, the base 28 is connected to the second portion 26b of the piston 26 by plugging, screwing or clipping, and the like, and therefore, the implementation is not limited.

The ring 30 is arranged between the piston 26 and the base 28. For example, the ring 30 is located in a space defined between the third portion 26c of the piston 26 and the base 28. Preferably, the ring 30 is made of a flexible material.

The piston rod 32 is connected to the second side S2 of the piston 26. For example, the piston rod 32 is connected to the third portion 26c of the piston 26 and extends a predetermined length from the third portion 26 c. Preferably, the piston rod 32 extends partially out of the chamber 42 through the cover 24. Preferably, the piston rod 32 and the piston 26 are integrated, and the piston rod 32 and the piston 26 comprise a metal material, which contributes to the improvement of the structural strength. Alternatively, the piston 26 may comprise a non-metallic material.

The seal 34 is mounted to the piston rod 32. For example, the seal 34 is located in another space defined between the second side S2 of the piston 26 and the cover 24. Preferably, the seal 34 is movably mounted to the piston rod 32. Here, the sealing member 34 is sleeved on a partial periphery of the piston rod 32, and the sealing member 34 can move along the length direction of the piston rod 32. In addition, the sealing member 34 has a flange 43, and the flange 43 is substantially close to the inner wall of the chamber 42 of the housing 22. Thus, the seal 34 can have the effect of both sealing the shaft (e.g., the seal 34 is disposed around a portion of the periphery of the piston rod 32) and the enclosure (e.g., the flange 43 of the seal 34 is substantially adjacent to the inner wall of the chamber 42 of the housing 22) to facilitate the sealing efficiency of the interior of the housing 22.

The partition 36 is disposed within the chamber 42 of the housing 22, and the partition 36 is located between the second side S2 of the piston 26 and the seal 34. Preferably, the compartment 42 of the housing 22 has a mounting portion 45 therein, with the divider 36 being dependent from the mounting portion 45. The mounting portion 45 is, for example, a recessed portion for the divider 36 to be pressed against. Preferably, the partition 36 is a washer, and the partition 36 has a through hole H.

The flexible member 38 is used to provide a flexible force to the seal 34 to maintain the seal 34 in a predetermined position, such as to hold the seal 34 against the partition 36. Wherein the flexible member 38 is mounted between the sealing member 34 and the cover 24.

The elastic member 40 is used to provide elastic force between the housing 22 and the piston 26. The piston 26 can partially extend the piston rod 32 out of the accommodating chamber 42 in response to the elastic force of the elastic member 40, so that the buffer device 20 is in a buffer ready state. Further, the elastic member 40 is disposed in the chamber 42 of the housing 22, and the piston 26 abuts against the elastic member 40 through the base 28.

As shown in fig. 4, the buffer device 20 is in the buffer ready state. The chamber 42 of the housing 22 may be filled with a buffer medium 46 (in fig. 4 to 8, the buffer medium 46 is represented by a plurality of black dots). The buffer medium 46 contains a fluid, such as oil or a liquid. Preferably, the inner wall W of the chamber 42 of the housing 22 has a groove 48. Here, the groove 48 is disposed along the longitudinal direction of the housing 22. Alternatively, the grooves 48 can be disposed in the same direction as the direction of relative displacement between the housing 22 and the piston 26. For example, the grooves 48 are disposed in a longitudinal direction, and the housing 22 and the piston 26 are displaced relative to each other in the longitudinal direction. Although the groove 42 is exemplified as a long groove, the shape of the groove 42 is not limited thereto.

As shown in fig. 4 and 5, the housing 22 and the piston 26 are capable of relative displacement. For example, when the piston rod 32 is fixed (e.g., the piston rod 32 abuts against an object) and a force is applied to the housing 22 in a first direction D1, the housing 22 is displaced in the first direction D1, such that the housing 22 and the piston 26 are relatively displaced; alternatively, when the housing 22 is fixed (e.g., the housing 22 is fixed against an object) and a force is applied to the piston rod 32 in a second direction (opposite to the first direction D1), the piston rod 32 is displaced in the second direction, so that the housing 22 and the piston 26 are also displaced relative to each other.

In this embodiment, for example, when the piston rod 32 is fixed and the housing 22 is displaced relative to the piston 26 in the first direction D1 in response to the force, the elastic element 40 can accumulate an elastic force in response to the displacement of the housing 22, and a portion of the buffer medium 46 is pressed to flow toward the opening 44 through the groove 48. In particular, with the piston 26 (or the partition 36) as a boundary, the buffer medium 46 can form a flow path from a first region a1 of the chamber 42 to a second region a2 of the chamber 42 by means of the groove 48, in order to generate a buffer action. It is thus clear that the buffer medium 46 can flow in the chamber 42 by means of the groove 48.

Further, a thrust is generated when the buffer medium 46 flows from the first region A1 to the second region A2 of the chamber 42. Specifically, at least a portion of the buffer media 46 may sequentially pass from the first zone A1, along the channel 48, through the perforations H of the divider 36, and to the second zone A2. If the pushing force is greater than the flexible force of the flexible member 38, the pushing force can push the sealing member 34 to displace relative to the piston rod 32 (e.g., push the sealing member 34 to displace in the first direction D1), so that the flexible member 38 gradually accumulates a flexible force. The pressure in the first area a1 and the second area a2 can be adjusted properly by the displacement of the sealing member 34.

As shown in fig. 6, during the flow of the buffer medium 46 from the first region a1 to the second region a2 of the chamber 42, the thrust force causes the ring 30 to gradually approach other flow paths of the buffer medium 46, for example, the ring 30 gradually approaches a gap 50 between the piston 26 and the inner wall W.

As shown in fig. 7 and 8, when the force continues to be applied to the housing 22 in the first direction D1, the elastic member 40 further continues to accumulate the elastic force in response to the displacement of the housing 22, and the buffer medium 46 further flows from the first area a1 to the second area a2 of the chamber 42 via the groove 48 to continue to generate the buffering action.

Further, when the buffer medium 46 flows from the first area a1 to the second area a2 of the accommodating chamber 42, the thrust force allows the ring 30 to plug the other flow path of the buffer medium 46, for example, the ring 30 can plug the gap 50 between the piston 26 and the inner wall W (as shown in fig. 8), so that the buffer medium 46 can flow from the first area a1 to the second area a2 of the accommodating chamber 42 only through the groove 48 as much as possible. More specifically, since the ring member 30 is made of a flexible material, the ring member 30 can abut against the third portion 26c of the piston 26 and slightly expand and deform due to the pushing force (pushing pressure) of the buffer medium 43, so as to plug the gap 50 between the piston 26 and the inner wall W, so that the buffer device 20 can provide an instantly increased buffer resistance.

In addition, when the buffer medium 46 further flows from the first region a1 to the second region a2 of the accommodating chamber 42, the pushing force can further push the sealing member 34 to displace relative to the piston rod 32 (e.g., push the sealing member 34 to displace further in the first direction D1), so that the flexible member 38 further accumulates the flexible force. Wherein, the pressure of the first region A1 and the second region A2 can be adjusted by further displacement of the sealing member 34.

It should be noted that when the force in the first direction D1 is released, the housing 22 can be displaced in a second direction in response to the elastic member 40 releasing the elastic force, so that the damping device 20 returns to the damping ready state (as shown in fig. 4). Wherein the second direction is opposite to the first direction D1. Specifically, during the displacement of the housing 22 in the second direction, the buffer medium 46 can also flow back through the passage between the base 28 and the ring 30. In addition, the flexure 38 also releases the application of the flexure force to the seal 34, allowing the seal 34 to remain in the predetermined position in response to the flexure force.

As shown in fig. 9, the damping device 20 can be applied to a furniture hinge 52. The furniture hinge 52 includes a first member 54 and a second member 56 pivotally connected to the first member 54. Preferably, the furniture hinge 52 further comprises at least one auxiliary elastic element (not shown) for providing a force to the first member 54 from the open position to the closed position relative to the second member 56 (for brevity, the description is omitted). The first member 54 may be mounted to a first piece of furniture (e.g., a door); in another aspect, the second member 56 may be mounted to a second piece of furniture (e.g., a cabinet) via a third member 58.

The damping device 20 is mounted to one of the first member 54 and the second member 56. Preferably, the first member 54 is a hinge cup and the second member 56 is a hinge arm, the damping device 20 being mounted within the hinge cup. When the first member 54 is closed relative to the second member 56 in a closing direction C (e.g., a final stroke), the piston rod 32 of the damping device 20 can abut against the first member 54 and the housing 22 can abut against the second member 56, so that the housing 22 and the piston 26 can be relatively displaced in response to the closing process to provide a damping effect to reduce the force of the first member 54 closing relative to the second member 56. For the principle of the buffering function provided by the buffering device 20, reference may be made to the above embodiments, and for the sake of brevity, further description is omitted here.

From the above description, it can be seen that the enhanced efficacy and advantages of the present invention are:

(1) the seal 34 may have the utility of both a shaft seal and a capsule.

(2) The seal 34 can be used to adjust the pressure in two areas of the chamber 42 of the housing 22 when the housing 22 and the piston 26 are displaced relative to each other.

(3) The partition 36 is located between the piston 26 and the seal 34, so that the piston 26 and the seal 34 have a protective function.

(4) The groove 48 may serve as a flow path for the buffer medium.

(5) The ring 30 may be used to plug the gap 50 between the piston 26 and the inner wall W of the housing 22.

Although the present invention has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the above embodiments are illustrative only, and various equivalent changes and modifications may be made without departing from the spirit of the present invention, and therefore, it is intended to cover in the appended claims all such changes and modifications as fall within the true spirit of the invention.

Claims

1. A kind of snubber assembly, include a body, a piston, a base, a ring member, a piston rod and a seal, characterized by that:

the shell comprises a containing chamber, and a buffer medium is filled in the containing chamber;

the piston is arranged in the accommodating chamber of the shell and is provided with a first side and a second side;

the base is mounted on a first side of the piston;

said ring being arranged between the piston and the base;

the piston rod is connected with the second side of the piston; and

the seal is mounted to the piston rod.

2. The cushioning device of claim 1, further comprising a cover mounted to the housing.

3. The damper of claim 2, wherein the piston rod extends partially out of the chamber through the cover.

4. A fender according to claim 3 wherein the seal is located between the second side of the piston and the cover.

5. A damper of claim 4 wherein said seal is movably mounted to the piston rod.

6. An impact-attenuating device according to claim 5, wherein the seal has a flange substantially proximate to an inner wall of the chamber of the housing.

7. The damper device of claim 4, further comprising a partition disposed in the chamber of the housing between the second side of the piston and the seal.

8. The cushioning device of claim 4, further comprising a flexure for providing a flexure force to the seal.

9. A damping device according to claim 2, characterized in that the inner wall of the chamber of the housing has a groove by means of which the damping medium can flow in the chamber when the housing and the piston are displaced relative to each other.

10. A fender according to claim 9 wherein the ring is made of a flexible material.

11. The cushioning device of claim 9, wherein the cushioning medium comprises a fluid.

12. A damper of claim 9 wherein the grooves are disposed in the same direction as the direction of relative displacement of the housing and the piston.

13. A fender according to claim 9 further comprising a resilient member providing a spring force between the housing and the piston.

14. The cushioning device of claim 13, wherein the resilient member is disposed within the chamber of the housing, and the base abuts against the resilient member.

15. The cushioning device of claim 13, wherein the housing further comprises an opening communicating with the chamber, and the cover is disposed adjacent the opening of the housing.

16. A fender according to claim 1 wherein the piston is integral with the piston rod.

17. A damping device suitable for a furniture hinge, the furniture hinge comprising a first member and a second member, wherein the second member is pivotally connected to the first member, the damping device being mounted on one of the first member and the second member, the damping device comprising a housing, a piston, a base, a ring, a piston rod and a sealing member, characterized in that:

the shell comprises a containing chamber and an opening, and a buffer medium is filled in the containing chamber;

the cover body is arranged on the shell and used for sealing the opening of the shell;

the base is mounted on a first side of the piston;

said ring being arranged between the piston and the base;

the piston rod is connected with the second side of the piston and penetrates through the cover body to partially extend out of the accommodating chamber; and the seal is movably mounted to the piston rod.

18. The cushioning device of claim 17, wherein the sealing member is disposed around the periphery of the piston rod and between the second side of the piston and the cover.

19. The damper device of claim 18, further comprising a partition secured within the chamber of the housing and positioned between the second side of the piston and the seal.

20. A fender according to claim 18 further comprising a flexible member for providing a flexible force to the seal and a resilient member for providing a resilient force between the housing and the piston.