CN109770586B

CN109770586B - Movable furniture part and buffer device thereof

Info

Publication number: CN109770586B
Application number: CN201711103599.1A
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: 2017-11-10
Filing date: 2017-11-10
Publication date: 2021-01-26
Anticipated expiration: 2037-11-10
Also published as: CN109770586A

Abstract

The invention relates to a movable furniture piece and a buffer device thereof. The shell is provided with an inner wall defining a chamber, and the chamber is filled with a buffer medium; the piston can move in the containing chamber; wherein the inner wall has a plurality of inner diameters.

Description

Movable furniture part and buffer device thereof

Technical Field

The invention relates to furniture and a buffer device thereof, in particular to a buffer device for a movable furniture piece.

Background

For example, U.S. Pat. No. 5, 8,181,758, 2 discloses a damping device comprising a cylinder 10, wherein a damping medium is injected into the cylinder 10; an elastic member 20 is disposed in the cylinder 10; a piston 40 is movably installed in the cylinder 10, the piston 40 includes a piston body 42, a connecting portion 44 connected to an end of the elastic member 20, and a neck portion 46 connected between the piston body 42 and the connecting portion 44. A control valve 60 is movably mounted on the neck 46 of the piston 40; wherein the moving speed of the piston 40 is controlled by closing or disengaging the control valve 60 corresponding to the opening of the piston body 42.

The application of the buffering device disclosed in this disclosure is very wide, for example, a drawer rail assembly of a furniture or a server rail assembly in a rack system, where the rail assembly has a self-opening and/or self-closing function, and during a process (for example, an end stroke) from opening to closing of one rail (or drawer) relative to another rail (or cabinet), the closing speed of the rail (or drawer) can be slowed down by the buffering device. For example, U.S. patent publication No. US 8,172,345B2 discloses a device that can assist a drawer in opening relative to the cabinet by pressing in a closed position, so-called self-opening (Push-open), and assist the drawer in closing itself during the end of its travel from an open position to a closed position, so-called self-closing (self-close). In addition, U.S. Pat. No. 5, 8,308,251, 2 discloses a design capable of adjusting the self-open (Push-open) strength. The three patents mentioned above are hereby incorporated by reference.

However, if the force applied by the user to close the drawer from the open position is too large or the force applied by the user continues to push the drawer to the cabinet without releasing the force, the drawer may be displaced to the over-pressure position after being displaced to the closed position of the cabinet, resulting in the drawer being opened (due to the design of pressing open) and not being closed relative to the cabinet. To improve this phenomenon, the present invention was developed.

Disclosure of Invention

The invention aims to provide a movable furniture piece and a buffer device thereof.

According to one aspect of the present invention, a furniture assembly comprises a first furniture member; a second furniture piece; the ejecting device is used for providing an opening force when the second furniture piece moves to a second position from a first position to a first direction relative to the first furniture piece, so that the second furniture piece can move to a second direction opposite to the first direction in response to the opening force; and a buffer device comprising a housing having an inner wall defining a chamber filled with a buffer medium; a piston movable in the chamber, the piston having at least one channel through which the buffer medium flows to generate a buffer resistance; and a controller disposed in the chamber of the housing, the controller including a control member; when the second furniture piece moves relative to the first furniture piece from the first direction to the first position and the relative displacement between the piston and the shell generates a buffering speed, the control piece moves towards the passage of the piston or at least partially or completely closes the passage of the piston according to the buffering speed; the second furniture member is prevented from moving relative to the first furniture member from the first position to the second position when the control member closes the passage of the piston.

Preferably, the folding device is further included for providing a closing force by the folding device during an end stroke of the second furniture member moving to the first position in the first direction relative to the first furniture member, so that the second furniture member can move to the first position.

Preferably, the controller further comprises an elastic member that accumulates an elastic force in response to the control member partially or completely closing the passage of the piston.

According to another aspect of the present invention, a damping device includes a housing and a piston. The shell is provided with an inner wall defining a containing chamber, and a buffer medium is filled in the containing chamber, wherein the inner wall is provided with a first inner diameter, a second inner diameter and a third inner diameter, the first inner diameter and the second inner diameter are different in inner diameter, and the second inner diameter and the third inner diameter are different in inner diameter; the piston is linearly movable within the chamber.

Preferably, the inner wall has the first inner diameter, the second inner diameter and the third inner diameter in sequence from the top to the bottom of the housing, the first inner diameter is larger than the second inner diameter, and the second inner diameter is larger than the third inner diameter.

Preferably, the inner wall has the first inner diameter, the second inner diameter and the third inner diameter in sequence from the top to the bottom of the housing, and the first inner diameter and the third inner diameter are larger than the second inner diameter.

Preferably, the piston comprises a passage for allowing the buffering medium to pass through the passage, and the buffering device further comprises a base and a controller, the base is connected with the piston through an extension part, and the controller is positioned between the piston and the base, the controller comprises a control part and an elastic part, wherein the control part can be used for partially or completely closing the passage of the piston; wherein, an elastic force is provided by the elastic piece, so that the control piece can no longer seal the passage of the piston.

Preferably, the controller is movably mounted to the extension.

Preferably, when the control member is at a predetermined position, the control member can partially or completely close the passage of the piston, and the elastic force is provided by the elastic member, so that the control member can leave the predetermined position.

Preferably, the control member and the elastic member are separate members.

Preferably, the control member defines a space for accommodating the elastic member.

Preferably, the piston includes a connecting portion and a contact portion, a height difference is provided between the connecting portion and the contact portion, the base is connected to the connecting portion of the piston through the extending portion, the control member can abut against the contact portion to partially or completely close a passage of the piston, and the elastic member is elastically deformed through the height difference to accumulate the elastic force.

Preferably, the control member and the elastic member are integrated together.

Preferably, the buffering device further comprises an extending member which can move relative to the shell through the piston, and a part of the extending member extends out of the accommodating chamber.

According to another aspect of the present invention, a damping device includes a housing, a piston, a base, a controller and a spring. The shell is provided with an inner wall defining a chamber, and the chamber is filled with a buffer medium; the piston can move in the containing chamber; the base is connected with the piston through an extension part, and the base and the piston comprise a channel for allowing the buffer medium to pass through the channel; the controller is positioned between the channel of the base and the channel of the piston; the spring is used for providing elastic force to one of the piston and the base; wherein the controller is movably mounted on the extension part; wherein, the inner wall has a first inner diameter, a second inner diameter and a third inner diameter.

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 perspective view of a buffering device according to a first embodiment of the present invention.

Fig. 2 is an exploded view of a buffering device according to a first embodiment of the present invention.

Fig. 3 is a schematic half-sectional perspective view of a cushioning device according to a first embodiment of the present invention.

Fig. 4 is an enlarged view of the region a of fig. 3.

Fig. 5 is a schematic internal view of a damping device according to a first embodiment of the present invention.

Fig. 6 is an enlarged view of the region a of fig. 5.

Fig. 7 is a schematic view showing that one of the piston and the housing of the damping device according to the first embodiment of the present invention can be displaced relative to the other upon receiving a force.

Fig. 8 is an enlarged view of the region a of fig. 7.

Fig. 9 is a schematic view showing that the control member of the damping device according to the first embodiment of the present invention closes the passage of the piston.

Fig. 10 is an enlarged view of the region a of fig. 9.

Fig. 11 is a schematic view showing that the control member of the damping device according to the first embodiment of the present invention no longer closes the passage of the piston by the elastic force of the elastic member.

Fig. 12 is an enlarged view of the region a of fig. 11.

Fig. 13 is a schematic view of a damping device according to a second embodiment of the present invention, wherein the piston is subjected to an external force.

FIG. 14 is a schematic view of a damping device according to a second embodiment of the present invention, in which the piston is not subjected to an external force.

FIG. 15 is a schematic view of a damping device according to a third embodiment of the present invention, wherein the controller does not close the passage of the piston.

FIG. 16 is a schematic view of a damping device according to a third embodiment of the present invention, wherein the controller closes the passage of the piston.

FIG. 17 is a schematic view of a damping device according to a fourth embodiment of the present invention, wherein the controller does not close the passage of the piston.

FIG. 18 is a schematic view of a damping device according to a fourth embodiment of the present invention, wherein the controller closes the passage of the piston.

FIG. 19 is a schematic view of a damping device according to a fifth embodiment of the present invention, wherein the controller does not close the passage of the piston.

Fig. 20 is a schematic view of a damping device according to a fifth embodiment of the present invention, in which a controller closes a passage of a piston.

Fig. 21 is a schematic internal view of a damping device according to a sixth embodiment of the present invention.

Fig. 22 is a schematic view showing the damping device according to the first embodiment of the present invention applied to furniture with the second furniture member in a first position relative to the first furniture member.

Fig. 23 shows a second furniture element according to the first embodiment of the invention in a second position relative to the first furniture element.

Fig. 24 shows a schematic view of the second furniture member in a third position relative to the first furniture member according to the first embodiment of the invention.

FIG. 25 is a schematic view showing the damping force of the damping device according to the first embodiment of the present invention in the first condition.

FIG. 26 is a schematic view showing the damping force of the damping device according to the first embodiment of the present invention in the second condition.

FIG. 27 is a diagram illustrating the damping force of the damping device according to the first embodiment of the present invention in the third condition.

Detailed Description

Fig. 1 to 3 show a damping device 20 according to a first embodiment of the present invention, which includes a housing 22, a piston 24, a base 28, a control member 30 and an elastic member 32. Preferably, the damping device 20 further comprises an extension 26 and a spring 34.

The housing 22 has an inner wall 38 defining a chamber 36. The housing 22 includes a bottom portion 40 and a top portion 42. Preferably, the bottom 40 is closed and the top 42 has an opening 44 that communicates with the chamber 36. The buffering device 20 further includes a cover 46 for closing the opening 44.

The piston 24 is linearly movable within the chamber 36, and in particular, the piston 24 moves substantially linearly within the chamber 36 of the housing 22. In another aspect, the extension 26 is movable relative to the housing 22 by the piston 24. Specifically, one end of the extension 26 is connected to a first side 24a of the piston 24, and the other end of the extension 26 partially protrudes out of the chamber 36 through the cover 46.

The base 28 is movable with the piston 24 within the chamber 36. Preferably, the base 28 is connected to a second side 24b of the piston 24, the second side 24b being opposite the first side 24 a. Wherein the base 28 and/or the piston 24 includes at least one channel. For example, the base 28 and the piston 24 respectively include a plurality of passages 48 and a plurality of passages 50, as shown in fig. 2, but not limited thereto.

The control member 30 and the elastic member 32 may constitute a controller. Specifically, the control member 30 and the elastic member 32 are located between the piston 24 and the base 28. In this embodiment, the control member 30 and the elastic member 32 are two separate members. Preferably, the control member 30 defines a space 33 for accommodating the elastic member 32, and the control member 30 and the elastic member 32 are movable between the base 28 and the piston 24. The elastic member 32 is, for example, a disc spring, but is not limited thereto.

The spring 34 is used to provide a spring force to the piston 24. Here, the spring 34 provides an elastic force to the piston 24 through the base 28. In other words, the elastic force of the spring 34 is applied to the piston 24 and the base 28.

As shown in fig. 4, the base 28 is connected to the piston 24 by an extension 52. The control member 30 and the elastic member 32 are movably mounted on the extension portion 52.

As shown in fig. 5 and 6, the piston 24 and the housing 22 are in a buffering ready state. At this time, the chamber 36 between the piston 24 and the top 42 of the housing 22 defines a first region R1, and the chamber 36 between the piston 24 and the bottom 40 of the housing 22 defines a second region R2. The elastic force of the spring 34 helps the extension 26 to rapidly extend out of the accommodating chamber 36 of the housing 22. Further, the chamber 36 of the housing 22 is filled with a buffer medium, which includes a fluid (the buffer medium is schematically shown by several black dots in fig. 5 and 6). Wherein the passage 50 of the piston 24 and the passage 48 of the base 28 can be used to allow the passage of the buffer medium. Wherein the control member 30 and the resilient member 32 are located between the opening E1 of the passage 48 of the base 28 and the opening E2 of the passage 50 of the piston 24.

The inner wall 38 of the housing 22 has a first inner diameter S1 and a second inner diameter S2 from the top 42 to the bottom 40 of the housing 22. Preferably, a third inner diameter S3 is also provided. In this embodiment, the inner wall 38 of the housing 22 has the first inner diameter S1, the second inner diameter S2, and the third inner diameter S3 in sequence from the top 42 to the bottom 40 of the housing 22. The first inner diameter S1 is larger than the second inner diameter S2, and the second inner diameter S2 is larger than the third inner diameter S3. According to this configuration, the cushioning device 20 is generally capable of providing a cushioning effect with a gradual progression of the front, middle and end sections.

Further, the base 28 is connected to the second side 24b of the piston 24 by the extension 52. On the other hand, the control member 30 and the elastic member 32 are movable along the extension 52 between the passage 48 of the base 28 and the passage 50 of the piston 24. Additionally, the passage 50 of the piston 24 communicates between the first side 24a and the second side 24b of the piston 24.

As shown in fig. 7 and 8, the damping device 20 can provide a damping effect when the relative displacement between the piston 24 and the housing 22 generates a damping speed, for example, when one of the piston 24 and the housing 22 is displaced relative to the other. Wherein, the damping device 20 can generate different damping actions according to different conditions. In this embodiment, the piston 24 receives a force (or external force) through the extending member 26 to displace the piston 24 relative to the housing 22.

In a first situation, for example when the extension 26 or the piston 24 is subjected to a first force F1, for example the first force F1 has a first speed, the piston 24 may pass through the chambers 36 defined by the first inner diameter S1, the second inner diameter S2 and the third inner diameter S3 in sequence (only the piston 24 is shown in the chamber 36 defined by the end of the second inner diameter S2 in fig. 7 and 8 for example), during which the buffer medium in the second region R2 (the buffer medium is schematically represented by black dots in fig. 7 and 8) flows towards the first region R1 in response to the first force F1, generating a first corresponding force F1'. Specifically, the fluid of the buffer medium may flow from the area of the second side 24b of the piston 24 to the area of the first side 24a of the piston 24 as the first corresponding force F1'. In this case, the fluid of the buffer medium can flow out of the passage opening E1 of the passage 48 of the base 28 and then reach the area of the first side 24a of the piston 24 through the passage 50 of the piston 24 and the gap between the outer periphery of the piston 24 and the inner wall 38 of the housing 22, respectively. The control member 30 and the elastic member 32 can be driven by the first corresponding force F1' to move away from the passage opening E1 of the base 28 and toward the passage opening E2 of the piston 24, so as to control the flow rate of the buffer medium from the second side 24b of the piston 24 to the first side 24a through the passage 50 of the piston 24. In other words, the control member 30 is able to displace towards the passage 50 of the piston 24 according to the damping speed. Wherein the elastic element 32 generates an elastic force in response to the buffering speed, for example, the elastic element 32 can be displaced to abut against a surface 55 of the second side 24b of the piston 24. Therefore, the damping device 20 can generate a first damping effect in response to the first condition. Wherein the spring 34 accumulates a spring force in response to the displacement of the piston 24, and when the spring force is released, the spring force can be used to restore the piston 24 and the housing 22 to the buffering ready state shown in fig. 5.

As shown in fig. 9 and 10, in a second condition, for example, when the extending member 26 or the piston 24 is applied with a second force F2, for example, the second force F2 has a second speed, which is greater than the first speed, the piston 24 can sequentially pass through the chamber 36 defined by the first inner diameter S1, the second inner diameter S2 and the third inner diameter S3 (only the piston 24 is shown in the chamber 36 defined by the third inner diameter S3 in fig. 9 and 10 as an example), and at this time, the buffer media (the buffer media are schematically shown by several black dots in fig. 9 and 10) respond to the second force F2 to generate a second corresponding force F2' against the second force F2. Specifically, the fluid of the buffer medium may flow from the area of the second side 24b of the piston 24 to the area of the first side 24a of the piston 24 as the second corresponding force F2'. Preferably, the control member 30 and the elastic member 32 can be driven by the second corresponding force F2 'to move away from the passage opening E1 of the base 28 and toward the passage opening E2 of the piston 24, and the control member 30 can be at a predetermined position X adjacent to the second side 24b of the piston 24 in response to the second corresponding force F2', so that the control member 30 can at least partially or completely close the passage 50 of the piston 24 at the predetermined position X to control the flow rate of the buffer medium through the passage 50 of the piston 24, so that the buffer force is increased, and the elastic member 32 accumulates an elastic force F3 in response to the control member 30 being at the predetermined position X. That is, the control member 30 is capable of partially or fully closing the passage 50 of the piston 24 depending on the damping speed to control the flow of the damping medium through the passage 50 of the piston 24. For example, when the second corresponding amount of force F2' is applied to the control member 30, if it has closed the passage 50 of the piston 24, can reduce or block the flow of the buffer medium from the area of the second side 24b of the piston 24 to the area of the first side 24a of the piston 24 through the passage 50 of the piston 24. Therefore, after the fluid of the damping medium flows out of the passage opening E1 of the passage 48 of the base 28 with the control member 30 closing the passage 50 of the piston 24, the fluid of the damping medium reaches the area of the first side 24a of the piston 24 through the gap between the periphery of the piston 24 and the inner wall 38 of the housing 22, and the damping force is large; on the other hand, the elastic member 32 is elastically deformed by abutting against the surface 55 of the piston 24, and accumulates the elastic force F3. Therefore, the damping device 20 can generate the second damping action according to the second condition.

In a third condition or a predetermined damping condition, when the piston 24 is located in the chamber 36 defined by the first inner diameter S1, the second inner diameter S2 or the third inner diameter S3 (only the piston 24 is located in the chamber 36 defined by the third inner diameter S3 in fig. 9 and 10 for example) and the second force F2 is applied (in this third condition, the second force F2 is a momentary force or a sudden excessive force), similar to the second condition, the control member 30 can at least partially or completely close the passage 50 of the piston 24 in response to the second corresponding force F2' to increase the damping force, and the elastic member 32 accumulates the elastic force F3. As shown in fig. 10, 11 and 12, once the speed of the second force F2 applied to the piston 24 or the extension member 26 is increased by the buffering force and reduced to a certain degree, or the second force F2 is reduced to be less than the elastic force F3 accumulated by the elastic member 32, the elastic member 32 releases the elastic force F3 applied to the check member 30, so that the check member 30 moves away from the predetermined position X and no longer closes the passage 50 of the piston 24. It can be seen that the damping device 20 can be switched from the second damping action to a relatively weak damping force in response to the third condition. That is, the damping device 20 has a variable damping action.

Referring to fig. 13 and 14, a damping device 200 according to a second embodiment of the present invention is shown. Specifically, the difference between the damping device 200 of the second embodiment and the damping device 20 of the first embodiment is substantially: the damper 200 omits the spring 34. Further, the chamber 204 of the housing 202 of the buffering device 200 is filled with a buffering medium, which includes a fluid (the buffering medium is schematically shown by several black dots in fig. 13 and 14). The chamber 204 is pre-pressurized. When the extension 206 or the piston 208 receives a force F4 (or an external force), the control member 210 may partially or completely close the passage 212 of the piston 208, once the force F4 is stopped, such that the fluid of the buffer medium can slowly drive the piston 208 by the pressure in the chamber 204 to restore the piston 208 and the housing 202 to the buffer ready state (as shown in fig. 14).

Referring to fig. 15 and 16, a damping device 300 according to a third embodiment of the present invention is shown. Specifically, the damping device 300 of the third embodiment is substantially different from the damping

devices

20 and 200 of the first and second embodiments in that: the elastic member 302 is a flat elastic piece, and the second side 306 of the piston 304 includes a connecting portion 308 and a contact portion 310, and a height difference H is formed between a surface 312 of the connecting portion 308 and the contact portion 310. Further, the base 314 is connected to the connecting portion 308 of the piston 304 by an extension 316. On the other hand, the control member 318 and the elastic member 302 are movable along the extension portion 316 between the passage 320 of the base 314 and the passage 322 of the piston 304. When the extension 324 or the piston 304 receives a force F5 (or an external force), the control member 318 can abut against the contact portion 310 of the piston 304 to partially or completely close the passage 322 of the piston 304 in response to a corresponding force K of the fluid of the buffer medium in a predetermined buffer condition to control the flow rate of the buffer medium through the passage 322 of the piston 304, so that the buffer force is increased, and the elastic member 302 abuts against the surface 312 of the connection portion 308 of the piston 304 and is elastically deformed by the height difference H to accumulate an elastic force. When the force F5 is weakened, the elastic member 302 releases the elastic force, and the control member 318 no longer closes the passage 322 of the piston 304.

Referring to fig. 17 and 18, a buffering device 400 according to a fourth embodiment of the present invention is shown. Specifically, the difference between the damping device 400 of the fourth embodiment and the damping

devices

20, 200, and 300 of the first, second, and third embodiments is substantially: the control member 402 is integrated with the elastic member 404. Further, the control member 402 and the elastic member 404 form a controller similar to a disc spring in appearance. The elastic member 404 and the control member 402 define a recess 406 therebetween. When the extension 408 or the piston 410 receives a force F6 (or an external force), the control member 402 can abut against the contact portion 412 of the piston 410 to partially or completely close the passage 414 of the piston 410 in response to a corresponding force K of the fluid of the buffering medium in a predetermined buffering condition, so as to control the flow rate of the buffering medium through the passage 414 of the piston 410, so that the buffering force is increased, and the elastic member 404 abuts against the surface 418 of the connection portion of the piston 410 to provide an elastic force. When the force F6 is weakened and the elastic member 404 releases the elastic force, the control member 402 no longer closes the passage 414 of the piston 410. It is worth mentioning that the corresponding force of the fluid, which contributes to the damping of the medium, by the recess 406 pushes the control member 402 to close the passage 414 of the piston 410.

Referring to fig. 19 and 20, a buffering device 500 according to a fifth embodiment of the present invention is shown. Specifically, the difference between the damping device 500 of the fifth embodiment and the damping device 400 of the fourth embodiment is substantially as follows: a recess 406 is not defined between the elastic member 404 and the control member 402. Specifically, one side 504 of the control member 502 is a plane. Thus, when the extension 506 or the piston 508 receives a force F7 (or external force), the control member 502 may receive a corresponding force K of the fluid of the damping medium through the side 504 to partially or fully close the passage 510 of the piston 508 in a predetermined damping condition. Similarly, the embodiment can also achieve the aforementioned functions.

Fig. 21 shows a damping device 600 according to a sixth embodiment of the present invention. Specifically, the shock absorbing device 600 of the sixth embodiment is substantially different from the shock absorbing devices of the first to fifth embodiments in that: the inner wall 604 of the housing 602 has a first inner diameter S4, a second inner diameter S5, and a third inner diameter S6 in that order from the top 606 to the bottom 608 of the housing 602. The first inner diameter S4 is larger than the second inner diameter S5, and the third inner diameter S6 is also larger than the second inner diameter S5. According to this configuration, the buffering device 600 can provide a buffering effect with non-gradual layers at the front, middle and end sections.

As shown in fig. 22, the damping device of each of the above embodiments can be applied to a piece of furniture 58, and here, the damping device 20 is applied to the piece of furniture 58 as an example. Specifically, the furniture 58 includes a first furniture member 60, a second furniture member 62, and a drive mechanism. The first furniture member 60 is, for example, a first rail (fixed rail) fixed to a cabinet 60 a; on the other hand, the second furniture element 62 is, for example, a second rail (movable rail) movable relative to the first rail, and the second furniture element 62 can be used to carry a drawer 62 a. The driving mechanism includes an ejecting device 64 and a retracting device 66. Wherein the second furniture member 62 (drawer 62a) is in a first position P1 (e.g., closed position) relative to the first furniture member 60 (cabinet 60 a).

Referring to fig. 22, 23 and 24, when the second furniture member 62 is pressed by the user from the first position P1 to a first direction D1 relative to the first furniture member 60 to move to a second position P2 (e.g., an overpressure position) (as shown in fig. 23) and once the user releases the pressing force, the ejection device 64 includes an opening spring capable of providing an opening force to move the second furniture member 62 to a third position P3 (e.g., an open position) (as shown in fig. 24) in response to the opening force in a second direction D2 opposite to the first direction D1, which is a so-called self-opening function. When the second furniture part 62 is pushed by the user from the third position P3 in the first direction D1 relative to the first furniture part 60 to move to the end stroke close to the first position P1, the closing device 66 includes a closing spring to provide a closing force, so that the second furniture part 62 can move to the first position P1, which is the so-called self-closing function. Since the self-open function and the self-close function are within the technical scope that can be understood by those skilled in the art, they are not described herein for brevity. On the other hand, the relative displacement movement of the piston 24 (or the extension 26) and the housing 22 of the damping device 20 can provide a damping effect during the displacement of the second furniture part 62 towards the first position P1 in response to the closing force.

Fig. 25 shows a graph of the damping force for the first condition, wherein the ordinate is newton in N and the abscissa is distance in mm.

For example, when the damping force is provided by the damping device 20 during the displacement of the second furniture part 62 from the third position P3 in the first direction D1 towards the first position P1, according to the first condition (as partially shown in fig. 7 and 8), the fluid of the damping medium can flow out from the passage opening E1 of the passage 48 of the base 28 and then through the passage 50 of the piston 24 to the region of the first side 24a of the piston 24, so that during the passage of the damping force D from a damping preparation region B1 (as in the damping preparation state) in front of the first position P1 to a main damping region B2, the damping force D can maintain a substantially consistent magnitude in response to the first force (e.g. closing force of the folding device 66) continuously applied to the second furniture part 62, i.e. the damping device 20 can generate the first damping action in front of the second furniture part 62 to the first position P1, to slow the second furniture member 62 before reaching the first position P1. In addition, an overpressure region B3 is defined between the first position P1 and the second position P2. At this time, the passage 50 of the piston 24 is not closed because the check member 30 faces the passage 50 of the piston 24, as shown in fig. 5 to 8, allowing the second furniture member 62 to be displaced from the first position P1 to the second position P2 relative to the first furniture member 60.

Alternatively, when the damping force is provided by the damping device 20 during a displacement of the second furniture part 62 from the third position P3 in the first direction D1 towards the first position P1, according to the second condition described above (this part can be seen with reference to fig. 9 and 10), the control member 30 can partially or completely close the passage 50 of the piston 24 to control the flow of the damping medium from the area of the second side 24b of the piston 24 through the passage 50 of the piston 24 to the area of the first side 24 a. Therefore, as shown in fig. 26, during the process of the damping force D reaching the main damping area B2 from the damping preparation area B1 before the closing position P1, the damping force D can be greatly increased in response to the second force applied to the second furniture member 62 (e.g. the user continuously applies an excessive force to the second furniture member 62), that is, the damping device 20 can generate a second damping action before the second furniture member 62 reaches the first position P1, so as to rapidly slow down the displacement speed of the second furniture member 62. At this point, the second furniture member is substantially prevented from moving relative to the first furniture member from the first position to the second position as the control member closes the passageway of the piston, so as to prevent the second furniture member 62 (drawer 62a) from moving relative to the first furniture member 60 (cabinet 60a) to the second position P2 without inadvertently (or unintentionally) activating the ejection device 64 to provide an opening force.

Alternatively, when the damping force is provided by the damping device 20 during the displacement of the second furniture part 62 from the third position P3 in the first direction D1 towards the first position P1, according to the third condition described above (this part being illustrated with reference to fig. 9 to 12), the control member 30 can partially or completely close the passage 50 of the piston 24 to control the flow of the damping medium from the region of the second side 24b of the piston 24 through the passage 50 of the piston 24 to the region of the first side 24 a; in addition, once the second force applied to the second furniture member 62 is reduced to a certain level (e.g., a momentary excessive force applied by the user to the second furniture member 62), the elastic member 32 releases the elastic force applied to the control member 30, so that the control member 30 moves away from the predetermined position X and no longer closes the passage 50 of the piston 24, thereby converting the second damping effect into a third level of damping effect with a weaker damping force. Therefore, as shown in fig. 27, during the process of the damping force D reaching the main damping area B2 from the damping preparation area B1 before the first position P1, the damping force D can be greatly increased in response to the second force applied to the second furniture member 62, and the damping force D is rapidly weakened before the second furniture member 62 reaches the first position P1.

Therefore, the damping device 20 can provide different degrees of damping action in response to different external forces. When the instantaneous pushing force of the second furniture piece 62 relative to the first furniture piece 60 from the third position P3 to the first direction D1 is too large, the buffering device 20 provides the second or third degree of buffering, so as to rapidly reduce the force applied by the user to the second furniture piece 62 (drawer 62a), and prevent the second furniture piece 62 (drawer 62a) from being displaced relative to the first furniture piece 60 (cabinet 60a) from the third position P3 directly to the second position P2 via the first position P1, resulting in the unintentional (unintentional) activation of the pop-up device 64 to provide the opening force. In other words, during the end stroke of the second furniture element 62 from the third position P3 to the first position P1, the damping device 20 can effectively ensure that the second furniture element 62 stops at the first position P1, thereby improving the stability and reliability of the driving mechanism.

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

a. the inner wall of the housing of the buffer device has a plurality of predetermined inner diameters, thereby helping the buffer device to provide a specific buffering effect.

b. The buffer device can correspondingly feed back a buffer force according to a force (or external force). The buffer device can provide buffer action of at least more than two different degrees, and can improve the stability and reliability of the driving mechanism during use.

c. The elastic force applied to the control member by the elastic member is released, so that the control member can leave a preset position and can not close the passage of the piston.

d. The damping device may be applied to furniture having a self-opening function, or a self-opening and self-closing function. In this case, the second furniture part can be prevented from being pushed directly into the first furniture part from the third position (e.g. the open position) and being displaced into the second position (e.g. the overpressure position) by the damping device, so that an unintended opening can be avoided.

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 furniture assembly comprising a first furniture member, a second furniture member, a pop-up device and a cushioning device, the furniture assembly comprising:

the ejection device is used for providing an opening force when the second furniture piece moves to a second position from a first position to a first direction relative to the first furniture piece, so that the second furniture piece can move to a second direction opposite to the first direction in response to the opening force; and

the buffer device includes:

a housing having an inner wall defining a chamber filled with a buffer medium;

a piston movable in the chamber, the piston having at least one channel through which the buffer medium flows to generate a buffer resistance; and

a controller arranged in the chamber of the shell, the controller comprising a control member and an elastic member;

when the second furniture piece moves relative to the first furniture piece from the first direction to the first position and the relative displacement between the piston and the shell generates a buffering speed, the control piece moves towards the passage of the piston according to the buffering speed, and the elastic piece moves to abut against one surface of the piston to generate elastic force;

when the buffering speed is not higher than a first speed, the elastic force of the elastic part enables the control part to be kept at a position close to but not closing the passage of the piston; when the buffering speed is higher than a second speed, the control piece overcomes the elastic force of the elastic piece to partially or completely close the passage of the piston, so that the second furniture piece is substantially prevented from moving from the first position to the second position relative to the first furniture piece, and the elastic piece accumulates the elastic force; along with the reduction of the buffering speed, the elastic piece can release the elastic force to ensure that the control piece does not close the passage of the piston any more; wherein the second speed is greater than the first speed.

2. The furniture assembly according to claim 1, further comprising a folding device for providing a closing force by the folding device during an end stroke of the second furniture member moving relative to the first furniture member in the first direction to approach the first position, so that the second furniture member can move toward the first position.

3. A kind of snubber assembly, include a body, a piston and a controller, characterized by that:

the shell is provided with an inner wall defining a containing chamber, and a buffer medium is filled in the containing chamber, wherein the inner wall is provided with a first inner diameter, a second inner diameter and a third inner diameter, the first inner diameter and the second inner diameter are different in inner diameter, and the second inner diameter and the third inner diameter are different in inner diameter;

said piston being linearly movable within said chamber, said piston including a passage for allowing the passage of the buffer medium therethrough; and

the controller is arranged in the chamber of the shell and comprises a control part and an elastic part, wherein the control part can be used for partially or completely sealing the passage of the piston, and the elastic part provides elastic force to ensure that the control part can not seal the passage of the piston any more.

4. A fender according to claim 3 wherein the inner wall has, in order from the top to the bottom of the housing, the first inner diameter, the second inner diameter and the third inner diameter, the first inner diameter being greater than the second inner diameter and the second inner diameter being greater than the third inner diameter.

5. A fender according to claim 3 wherein the inner wall has the first inner diameter, the second inner diameter and the third inner diameter in that order from the top to the bottom of the housing, and the first inner diameter and the third inner diameter are greater than the second inner diameter.

6. The cushioning device of claim 3, further comprising a base, wherein the base is connected to the piston by an extension, and wherein the controller is located between the piston and the base.

7. A fender according to claim 6 wherein the control is movably mounted on the extension.

8. A damper device according to claim 7 wherein the control member is adapted to partially or fully close the passage of the piston when the control member is in a predetermined position, and the resilient member provides the resilient force to allow the control member to move away from the predetermined position.

9. A fender according to claim 6 wherein the control member is a separate member from the resilient member.

10. The cushioning device of claim 9, wherein the control member defines a space for receiving the resilient member.

11. The damping device according to claim 9, wherein the piston includes a connecting portion and a contact portion, a height difference is provided between the connecting portion and the contact portion, the base is connected to the connecting portion of the piston through the extension portion, the control member can abut against the contact portion to partially or completely close the passage of the piston, and the elastic member is elastically deformed by the height difference to accumulate the elastic force.

12. An impact-attenuating device according to claim 6, characterised in that the control member is integral with the resilient member.

13. The damping device according to claim 12, wherein the piston includes a connecting portion and a contact portion, a height difference is provided between the connecting portion and the contact portion, the base is connected to the connecting portion of the piston through the extension portion, the control member can abut against the contact portion to partially or completely close the passage of the piston, and the elastic member is elastically deformed by the height difference to accumulate the elastic force.

14. The damper device of claim 6, further comprising an extension member movable relative to the housing by the piston, a portion of the extension member extending out of the chamber.

15. A kind of snubber assembly, include a body, a piston, a base, a controller and a spring, characterized by that:

the shell is provided with an inner wall defining a containing chamber, and a buffer medium is filled in the containing chamber;

the piston can move in the accommodating chamber;

the base is connected with the piston through an extension part, and the base and the piston comprise a channel for allowing the buffer medium to pass through the channel;

the controller is positioned between the channel of the base and the channel of the piston, and comprises a control part and an elastic part, wherein the control part can be used for partially or completely closing the channel of the piston, and the elastic part provides elastic force to ensure that the control part can not close the channel of the piston any more; and

the spring is used for providing elastic force to one of the piston and the base;

wherein the controller is movably mounted on the extension part;

wherein, the inner wall has a first inner diameter, a second inner diameter and a third inner diameter.

16. An impact-attenuating device according to claim 15, wherein the inner wall has, in order from the top to the bottom of the housing, the first inner diameter, the second inner diameter, and the third inner diameter, the first inner diameter being greater than the second inner diameter, and the second inner diameter being greater than the third inner diameter.

17. An impact-attenuating device according to claim 15, wherein the inner wall has the first inner diameter, the second inner diameter, and the third inner diameter in that order from the top to the bottom of the housing, and the first inner diameter and the third inner diameter are larger than the second inner diameter.

18. A fender according to claim 15 wherein the control member is adapted to partially or fully close the passageway of the piston when the control member is in a predetermined position and the resilient member provides a resilient force to urge the control member away from the predetermined position.

19. A fender according to claim 15 further comprising an extension member which is movable relative to the housing by the piston.