CN116357186A - Labor-saving damping device and sliding door - Google Patents

Abstract

The invention discloses a labor-saving damping device and a sliding door, wherein the labor-saving damping device is arranged between a first object and a second object, and the second object slides along a first direction relative to the first object to be closed or slides along a second direction deviating from the first direction to be opened, and comprises a blocking piece, a damping piece, a swinging piece and a linkage mechanism; the blocking piece is pushed by the second object to slide in the same direction in a partial stage of closing of the second object; the damping member buffers the second object while the blocking member slides in the first direction; the swinging piece is provided with a blocking surface and swings between a first state and a second state, the first state blocking surface is suitable for being pushed along a second direction, and the second state blocking surface is not pushed by a second object any more; the swinging piece enters a second state from a first state when sliding along a second direction, and the swinging piece is reversed when sliding along the first direction; the linkage mechanism is arranged between the blocking piece and the swinging piece, so that the blocking piece and the swinging piece are in linkage in the same direction, and the movement stroke of the swinging piece is larger than that of the blocking piece. The labor-saving damping device can save more labor when opening the door.

Description

Labor-saving damping device and sliding door

Technical Field

The invention relates to the field of buffer devices, in particular to a labor-saving damping device and a sliding door.

Background

In order to prevent the door from colliding with the side frame of the door frame when the door is closed, a damping device for buffering is generally provided at the upper frame of the door frame. The damping device is arranged at a position close to the side frame of the door frame, and when the door slides to a position close to the side frame, the damping device is pushed to realize buffering. When the door is opened, the damping device needs to be pushed to reset, so that the door can slide continuously and buffer can be realized again when the door is closed next time.

Because the damping device needs to be pushed to reset when the door is opened, the resistance is increased when the door is opened, and larger door opening force is needed.

Disclosure of Invention

The invention aims to overcome the defects or problems in the prior art and provide a labor-saving damping device for door opening and a sliding door with the labor-saving damping device.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

scheme one: the labor-saving damping device is arranged between a first object and a second object, the second object slides relative to the first object along a first direction to be closed or slides along a second direction deviating from the first direction to be opened, and the labor-saving damping device comprises a blocking piece, a damping piece, a swinging piece and a linkage mechanism; the blocking member is adapted to be pushed by the second object to slide in the first direction relative to said first object during at least part of the sliding of the second object in the first direction; the two ends of the damping piece are respectively connected with the first object and the blocking piece, and energy is stored when the blocking piece slides along the first direction so as to buffer the movement of the second object along the first direction; the swinging piece is provided with a swinging shaft and a blocking surface and is suitable for being matched with the first object and/or the blocking piece to swing around the swinging shaft between a first state and a second state, the blocking surface is suitable for being pushed by a second object sliding along a second direction when the swinging piece is in the first state, and the blocking surface rotates to be not pushed by the second object when the swinging piece is in the second state; the swinging piece is configured to be in a first state and then enter a second state when sliding along a second direction, and is configured to be in the second state and then enter the first state when sliding along the first direction; the linkage mechanism is arranged between the blocking piece and the swinging piece, so that the blocking piece and the swinging piece are in linkage in the same direction, and the movement stroke of the swinging piece is larger than that of the blocking piece.

Scheme II: based on the first scheme, the clamping device further comprises a first elastic piece, a clamping piece and a second elastic piece; one end of the clamping piece is connected with the blocking piece; the second elastic member is interposed between the blocking member and the clamping member; one end of the second elastic piece acts on the blocking piece, and the other end acts on the clamping piece so as to drive the clamping piece to prop against the side wall of the blocking piece; the clamping member is adapted to be urged by the second object moving in a first direction to move in a direction away from the side wall of the blocking member so as to clamp the second object between the blocking member and the clamping member; when the second object is clamped between the blocking piece and the clamping piece, the second object drives the blocking piece to move along a first direction or the blocking piece drives the second object to move along the first direction; the second object is suitable for being separated from the clamping of the clamping piece when moving along the second direction; the first elastic member is interposed between the blocking member and the first object such that the blocking member always has a tendency to move toward the first direction.

Scheme III: based on the second scheme, a guide inclined plane is arranged on the clamping piece, so that an opening for the second object to extend in the first direction is formed between the clamping piece and the side wall of the blocking piece when the clamping piece abuts against the side wall of the blocking piece.

Scheme IV: based on a second scheme, the clamping piece is rotationally connected with the blocking piece around a first axis vertical to the first direction so as to move in a direction away from the side wall of the blocking piece when being pushed by the second object moving in the first direction.

Scheme five: based on a scheme II, a chute is arranged on the first object; the sliding groove comprises a first groove section and a second groove section which are communicated with each other; the first groove section extends along a first direction, and the second groove section is inclined to the first direction; the swing piece is provided with a protruding part; the swinging piece is in a first state when the protruding part is positioned on the first groove section; when the protruding part is positioned on the second groove section, the swinging piece is in a second state, and the first elastic piece cannot enable the swinging piece to be separated from the second state.

Scheme six: based on the first scheme, the linkage mechanism comprises an oil cylinder, a first piston and a second piston, wherein the first piston and the second piston are positioned at two ends of the oil cylinder along a first direction; the oil cylinder comprises a first section and a second section which are communicated with each other, the cross section of the first section is larger than that of the second section, the first piston moves in the first section and is connected with the blocking piece, and the second piston moves in the second section and is connected with the swinging piece.

Scheme seven: based on a sixth aspect, the swinging member includes a swinging member body and a connecting member; the swinging member body is provided with the swinging shaft and the blocking surface and is suitable for being matched with the first object or the blocking member to swing around the swinging shaft between a first state and a second state; the connecting piece is rotationally connected with the swinging piece body around the swinging shaft; the second piston moves in the second section and is connected with the connecting piece.

Scheme eight: based on the first scheme, the linkage mechanism comprises a pulley and a traction rope; the pulley is arranged on the blocking piece and rotates around a second axis perpendicular to the first direction relative to the blocking piece; the traction rope is propped against the pulley, one end of the traction rope is connected with the swinging piece, and the other end of the traction rope is connected with the first object.

Scheme nine: based on the first scheme, the linkage mechanism comprises a first rack, a second rack, a first gear and a second gear; the first rack is arranged on the blocking piece and extends along a first direction; the second rack extends along a first direction and is rotationally connected with the swinging piece around the swinging shaft; the first gear is coaxially and rotationally connected with the second gear, and is rotationally connected with the first object around a third axis perpendicular to the first direction, and the number of teeth of the first gear is smaller than that of teeth of the second gear; the first gear is meshed with the first rack, and the second gear is meshed with the second rack; and the first rack and the second rack respectively move in the same direction.

Scheme ten: a sliding door comprising a door frame, a door and at least one labor-saving damping device according to any one of the above aspects one to nine; the door frame comprises an upper frame, a lower frame and two side frames; the upper frame forms the first object, and at least one end of the upper frame is provided with the labor-saving damping device; the door forms the second object.

Scheme eleven: based on the scheme ten, the upper frame comprises an upper frame body and a first shell; the upper frame body is provided with a sliding rail; the first shell is fixed on the inner wall of the sliding rail, and the labor-saving damping device is arranged in the first shell.

From the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. the second object pushes the blocking piece to slide along the first direction in the process of sliding and closing along the first direction, and the damping piece stores energy so that the second object is buffered and collision can not occur. The swinging piece realizes the same-direction linkage with the blocking piece through the linkage mechanism, so that when the blocking piece moves along the first direction, the swinging piece can enter the first state from the second state, and the blocking surface is suitable for being pushed by a second object sliding along the second direction. When the second object moves in the second direction to be opened, the blocking surface is pushed to enable the swinging piece to move in the second direction, and the linkage mechanism is reset to drive the blocking piece and the damping piece to reset. When the second object pushes the swinging piece to enter the second state, the blocking surface rotates until the second object is not pushed any more, at the moment, the second object can continue to slide along the second direction without the blocking of the blocking surface so as to be opened, and the blocking piece can be pushed along the first direction to be buffered when the second object is closed again. When the second object is opened, the linkage mechanism, the blocking piece and the damping piece are reset to do constant work by pushing the swinging piece. According to the scheme, the stroke of the swinging piece is larger than that of the blocking piece through the linkage mechanism, so that the force of opening the door is reduced by increasing the stroke of the swinging piece under the condition of constant acting, and the door opening device is more labor-saving.

2. Due to the fact that the clamping piece is arranged, when the second object moves along the first direction, the second object is clamped by the clamping piece, the second object is linked with the blocking piece, and the blocking piece can be driven to move along the first direction. Moreover, as the blocking piece always has a trend of moving towards the first direction due to the first elastic piece, the first elastic piece can assist the second object to move along the first direction in the process of moving along the first direction, so that the door can be automatically closed after the hand is released in a more labor-saving manner.

3. The clamping piece is provided with a guide inclined surface, so that an opening for the second object to extend in the first direction is formed with the side wall of the blocking piece when the clamping piece abuts against the side wall of the blocking piece, and the second object can be ensured to push the clamping piece to move in the direction away from the side wall of the blocking piece, so that the second object is clamped.

4. The clamping piece is rotationally connected with the blocking piece around a first axis vertical to the first direction so as to move in a direction away from the side wall of the blocking piece when being pushed by the second object moving in the first direction, and the structure is reasonable and simple.

5. The sliding groove is provided with the first groove section and the second groove section, so that the swinging piece can realize the switching between the first state and the second state in the sliding process. And, because the second slot section is inclined to the first direction, when the bulge of the swinging member is located in the second slot section, the bulge is limited along the first direction, so that the swinging member can not be separated from the second state under the action of the first elastic member, and the second object can be ensured to push against the blocking member to be buffered.

6. The first section of the oil cylinder is connected with the blocking piece through the first piston, and the second section of the oil cylinder is connected with the swinging piece through the second piston, so that the blocking piece and the swinging piece are in same-direction linkage. The cross section of the first section is set to be larger than the cross section of the second section, so that the movement stroke of the swinging member is larger than the movement stroke of the blocking member.

7. The swinging member is provided with a swinging member body and a connecting member, so that the swinging member body is matched with the first object or the blocking member to swing around the swinging shaft between a first state and a second state. The connecting piece is connected with the swinging member body in a rotating way around the swinging shaft, and the second piston is connected with the connecting piece, so that the connecting piece and the second piston are not driven to rotate when the swinging member body rotates, and the structure is more reasonable.

8. The pulley is arranged on the blocking piece; the traction rope is propped against the pulley, one end of the traction rope is connected with the swinging piece, and the other end of the traction rope is connected with the first object; the movable pulley structure is formed, the linkage of the swinging piece and the blocking piece is realized, and the movement stroke of the swinging piece is larger than that of the blocking piece.

9. Because the first gear and the second gear are connected in a coaxial rotation stopping way, when the blocking piece or the swinging piece moves, the corresponding racks slide to enable the first gear and the second gear to rotate, so that linkage of the swinging piece and the blocking piece is realized. Since the number of teeth of the first gear is smaller than that of the second gear, the movement of the swinging member is formed larger than that of the blocking member.

10. The sliding door comprises the labor-saving damping device, so that the sliding door has all the beneficial effects.

11. The upper frame comprises an upper frame body and a first shell, and is convenient to mold.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded perspective view of a first housing and a labor-saving damper device according to a first embodiment;

FIG. 2 is a schematic structural view of a first housing and a labor-saving damper device according to the first embodiment;

FIG. 3 is a schematic view of the structure of a housing body in the first embodiment;

FIG. 4 is an exploded perspective view of a blocking member and a second elastic member according to the first embodiment;

FIG. 5 is an exploded perspective view of the swing member of the first embodiment;

FIG. 6 is a schematic view showing the assembly of the blocking portion and the clamping member in accordance with the first embodiment;

FIG. 7 is a schematic structural diagram of the labor-saving damper device in the initial state according to the first embodiment;

FIG. 8 is a schematic view showing the state of the pushing block and the labor-saving damping device when the door is closed in the first embodiment;

FIG. 9 is an exploded perspective view of the first housing and the effort-saving damper device of the second embodiment;

FIG. 10 is a schematic structural view of a labor-saving damper device in an initial state according to the second embodiment;

FIG. 11 is a schematic view showing the state of the pushing block and the labor-saving damping device when the door is closed in the second embodiment

FIG. 12 is a schematic view of the structure of the first housing and the effort-saving damper device in the third embodiment;

fig. 13 is a schematic structural diagram of a linkage mechanism in the third embodiment.

The main reference numerals illustrate:

a first direction D1; a second direction D2; a third direction D3; fourth direction D4; a pushing block 1; a first housing 2; a housing chamber 21; a first opening 211; a case body 22; a chute 221; a first groove segment 2211; a second groove segment 2212; boss 222; a first card slot 223; a first receiving groove 224; a second receiving groove 225; seventh card slot 226; a cover 23; a blocking member 3; a slide 31; a first sheet 311; a second sheet 312; a first mounting hole 313; a first slot 314; third channel segment 3141; fourth groove segment 3142; a first shaft hole 315; a third mounting hole 316; a blocking portion 32; a first body 321; a first column 322; a second column 323; a third receiving groove 324; a first male shaft 325; a first fixing member 33; a first mounting block 331; a second card slot 332; a third clamping groove 333; a fourth card slot 334; a damper 4; a swinging member 5; a swinging member body 51; a second body 511; a first arm 5111; a second arm 5112; a blocking surface 5113; a second male shaft 512; a projection 513; a connecting member 52; a connector body 521; a first bump 522; a second fixing member 523; a second mounting block 5231; fifth card slot 5232; a second bump 53; a linkage mechanism 6; a cylinder 61; a first section 611; a second section 612; a first piston 62; a second piston 63; a pulley 64; pulling rope 65; a first rack 66; a first gear 67; a second gear 68; a first plate 69; a first plate 691; a second sheet 692; a second rack 6921; a third bump 693; a first elastic member 7; a clamping member 8; a guide slope 81; a second elastic member 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are preferred embodiments of the invention and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without creative efforts, are within the protection scope of the present invention.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the invention.

In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Embodiment one:

the sliding door comprises a door frame, a door and at least one labor-saving damping device. The door frame includes upper frame, lower frame and both sides frame. The upper frame forms a first object, and at least one end of the upper frame is provided with a labor-saving damping device. The door forms a second object.

The labor-saving damping device is arranged between the door frame and the door, and the door slides along a first direction D1 relative to the door frame to be closed or slides along a second direction D2 which is opposite to the first direction D1 to be opened. In actual use, the door comprises a door body (not shown in the figure) and a pushing block 1, wherein the pushing block 1 is arranged at the top end of the door body.

As shown in fig. 1, the upper frame includes an upper frame body and a first housing 2. The upper frame body is provided with a sliding rail. The first shell 2 is fixed on the inner wall of the sliding rail, and the labor-saving damping device is arranged in the first shell 2. The upper frame is arranged to comprise an upper frame body and a first shell 2, and is convenient to mold.

As shown in fig. 1 to 3, the first housing 2 is provided with a housing chamber 21 and a chute 221. The first housing 2 extends in a first direction D1, and the accommodating chamber 21 on the first housing 2 extends in the first direction D1. The accommodating cavity 21 is opened at the bottom wall of the first housing 2 to form a first opening 211, and a boss 222 is disposed at a substantially middle portion of a sidewall of the accommodating cavity 21. The upper end of the boss 222 is provided with a first clamping groove 223. A first accommodating groove 224 is arranged above the boss 222, and a second accommodating groove 225 is arranged below the first clamping groove 223. The sliding groove 221 is disposed on a wall of the accommodating chamber 21 where the boss 222 is disposed, and the sliding groove 221 includes a first groove section 2211 and a second groove section 2212 that are communicated with each other. The first segment 2211 extends along a first direction D1, and the second segment 2212 is inclined to the first direction D1. Specifically, the second groove segment 2212 is inclined upward to the first direction D1. In actual use, the first housing 2 is composed of a housing body 22 and a cover 23. The housing body 22 and the cover 23 enclose a housing cavity 21, and the boss 222, the first housing groove 224, the second housing groove 225, and the chute 221 are all disposed on the housing body 22.

As shown in fig. 1 and 6, the labor-saving damping device includes a blocking member 3, a damping member 4, a swinging member 5, a linkage mechanism 6, a first elastic member 7, a clamping member 8, and a second elastic member 9.

The blocking member 3 is adapted to be pushed by the door to slide in the first direction D1 relative to the door frame during at least part of the sliding of the door in the first direction D1. In this embodiment, since the effort-saving damping device is disposed at the end of the upper frame, the pushing block 1 is adapted to push the blocking member 3 to slide along the first direction D1 relative to the door frame when the door slides along the first direction D1 to the side frame, so that the following damping member 4 stores energy to buffer the door, and collision between the door and the side frame is avoided.

As shown in fig. 1, 4 and 7, the blocking member 3 includes a slide 31, a blocking portion 32 and a first fixing member 33. The slide 31 includes a first sheet 311 and a second sheet 312 integrally connected. The first sheet 311 extends along a first direction D1, and has a first mounting hole 313 at one end. The second sheet 312 is located at an end of the first sheet 311 away from the first mounting hole 313, and is connected to the first sheet 311 and extends along the first direction D1. The first sheet 311 and the second sheet 312 have a gap in a third direction D3 perpendicular to the first direction D1, and the gap extends in the first direction D1. The second sheet 312 is provided with a first groove 314, and the first groove 314 includes a third groove section 3141 and a fourth groove section 3142 which communicate with each other. The third groove segment 3141 extends along the first direction D1, the fourth groove segment 3142 is inclined upward to the first direction D1, and the third groove segment 3141 is farther from the first mounting hole 313 than the fourth groove segment 3142. The end of the second sheet 312 adjacent to the third slot segment 3141 is provided with a first shaft hole 315.

As shown in fig. 4 and 7, the blocking portion 32 includes a first body 321, a first cylinder 322, a second cylinder 323, and two first protruding shafts 325. The first body 321 extends along a fourth direction D4 perpendicular to the first direction D1 and the third direction D3, two side walls of the first body 321 perpendicular to the third direction D3 are respectively provided with a first protruding shaft 325, and the two first protruding shafts 325 are in a racetrack shape. One of the two first protruding shafts 325 is in plug-in fit with the first shaft hole 315 of the second sheet 312, and the other first protruding shaft 325 is disposed in the chute 221 of the accommodating cavity 21. The blocking portion 32 is in plug-in fit with the second sheet 312 through the first protruding shaft 325, and the first protruding shaft 325 is in a track shape, so that the blocking portion 32 and the second sheet 312 are axially limited in the first direction D1.

As shown in fig. 4 and 7, the first cylinder 322 is protruding from a side wall of the first body 321 facing the first groove segment 2211. The second post 323 is protruding from a side wall of the first post 322 facing the first groove segment 2211, and a height of the second post 323 along the fourth direction D4 is smaller than that of the first post 322, so that the first post 322 and the second post 323 form a T-shaped structure. The bottom end of the second column 323 is provided with a third accommodating groove 324, and the third accommodating groove 324 extends into the first column 322.

As shown in fig. 4 and 7, the first fixing member 33 is a block-shaped body, and a first mounting block 331 adapted to the first mounting hole 313 of the slide 31 is provided at the bottom end thereof. The first fixing member 33 is in limit fit with the slide 31 in the first direction D1 by the first mounting block 331 being fitted with the first mounting hole 313. The first fixing member 33 is provided with a second clamping groove 332, a third clamping groove 333 and a fourth clamping groove 334 from top to bottom.

As shown in fig. 1 and 7, two ends of the damping member 4 are respectively connected to the first object and the blocking member 3, and energy is stored to buffer the movement of the door in the first direction D1 when the blocking member 3 slides in the first direction D1. The damping piece 4 is placed in the second accommodating groove 225, the movable end of the damping piece is clamped in the fourth groove of the first fixing piece 33, and the other end of the damping piece abuts against the boss 222. In the present embodiment, the damping member 4 is a hydraulic cylinder.

As shown in fig. 5, 7 and 8, the oscillating member 5 is provided with an oscillating shaft and a blocking surface 5113 and is adapted to cooperate with said door frame and/or blocking member 3 to oscillate about the oscillating shaft between a first condition in which the blocking surface 5113 is adapted to be pushed by a door sliding in the second direction D2 and a second condition in which the blocking surface 5113 is rotated to no longer be pushed by the door; the swinging member 5 is configured to be in the first state and then in the second state when sliding in the second direction D2, and is configured to be in the second state and then in the first state when sliding in the first direction D1.

Further, the slide groove 221 is provided with the first groove section 2211 and the second groove section 2212 so that the swinging member 5 can be switched between the first state and the second state during sliding. The swinging member 5 is provided with a projection 513. When the projection 513 is located in the first groove segment 2211, the oscillating member 5 is in the first state. When the projection 513 is located in the second groove segment 2212, the swinging member 5 is in the second state.

In the present embodiment, as shown in fig. 3, 7 and 8, the swinging member 5 includes a swinging member body 51 and a connecting member 52. The swinging member body 51 is provided with a swinging shaft and a blocking surface 5113, and is adapted to cooperate with the door frame or the blocking member 3 to swing between a first state and a second state around the swinging shaft.

As shown in fig. 5, the swing member body 51 includes a second body 511, two second protruding shafts 512, and two protruding portions 513. The second body 511 is a substantially inverted L-shaped block, forming a first arm 5111 parallel to the first direction D1 and a second arm 5112 parallel to the fourth direction D4. The two second protruding shafts 512 are respectively protruding on two sidewalls of the first arm 5111 along the third direction D3, and together form a swinging shaft of the swinging member body 51. The two protruding portions 513 are respectively vertically protruding on two side groove walls of the first arm 5111 along the third direction D3. One second protruding shaft 512 is slidably disposed in the sliding groove 221, the other second protruding shaft 512 is slidably disposed in the first groove 314, and the two second protruding shafts 512 are respectively rotatably connected with the sliding groove 221 and the first groove 314. One protruding part 513 is arranged in the sliding groove 221 in a sliding way, and the other protruding part 513 is arranged in the first groove 314 in a sliding way. Each projection 513 is closer to the second groove segment 2212 than each second male shaft 512. The face of the second arm 5112 facing the blocking portion 32 forms a blocking face 5113. The second arm 5112 of the swing member body 51 is located in the gap between the first sheet 311 and the second sheet 312.

As shown in fig. 5, the link 52 is rotatably connected to the swing body 51 about a swing axis. The connector 52 includes a connector body 521, a first bump 522, and a second fixing member 523. The connecting member body 521 is a body extending along the first direction D1, and the connecting member body 521 has a substantially L-shaped cross section. The first bump 522 is protruded on the bottom wall of one end of the connecting member body 521, and is rotatably connected to the second protruding shaft 512 of the swing member body 51 slidably connected to the first groove 314. A second mounting hole (not shown) is formed in the top wall of the connector body 521 at an end facing away from the first bump 522. The second fixing member 523 is a block-shaped body, and a second mounting block 5231 is provided at a bottom wall thereof. The second mounting block 5231 and the second mounting hole cooperate such that the connecting member body 521 is limitedly fitted with the second fixing member 523 in the first direction D1. The second fixing member 523 is provided with a fifth engaging groove 5232. In this embodiment, the swinging member body 51 and the connecting member 52 are separately disposed and rotationally connected around the swinging shaft, so that the swinging member body 51 does not drive the connecting member 52 and the second piston 63 described below to rotate when rotating, and the structure is more reasonable.

As shown in fig. 1, 7 and 8, the linkage mechanism 6 is interposed between the blocking member 3 and the swinging member 5 to cause the blocking member 3 to be linked with the swinging member 5 in the same direction and to cause the movement of the swinging member 5 to be formed to be larger than the movement stroke of the blocking member 3.

In the present embodiment, as shown in fig. 8, the linkage mechanism 6 includes a cylinder 61, a first piston 62, and a second piston 63. The first piston 62 and the second piston 63 are located at both ends of the cylinder 61 in the first direction D1. The oil cylinder 61 is disposed in the first receiving groove 224, which includes a first section 611 and a second section 612 communicating with each other, and the cross section of the first section 611 is larger than that of the second section 612. The first piston 62 moves in the first section 611 and is connected with the blocking member 3, the second piston 63 moves in the second section 612 and is connected with the swinging member 5, so that the blocking member 3 and the swinging member 5 are in linkage in the same direction, and the cross section of the first section 611 is larger than the cross section of the second section 612, so that the movement stroke of the swinging member 5 is larger than the movement stroke of the blocking member 3. Specifically, the first piston 62 is clamped in the second clamping groove 332 of the first fixing member 33. The second piston 63 is connected to the connector 52, and is engaged with the fifth engaging groove 5232 of the second fixing member 523. In the present embodiment, the cross section of the first and second sections 611 and 612 is set such that the stroke of the swinging member 5 is 2 times that of the blocking member 3.

As shown in fig. 1, 3, 7 and 8, the first elastic member 7 is interposed between the blocking member 3 and the door frame so that the blocking member 3 always has a tendency to move toward the first direction D1; and the subway elastic member cannot disengage the swinging member 5 from the second state. Specifically, one end of the first elastic member 7 is locked to the first locking groove 223 of the boss 222, and the other end is locked to the third locking groove 333 of the first fixing member 33.

As shown in fig. 6, one end of the clamping member 8 is connected to the blocking member 3. Specifically, the clamping member 8 is rotatably connected with the blocking member 3 around the first axis perpendicular to the first direction D1, and is connected with the blocking member 3 in a rotatable connection manner, so that the structure is more reasonable and simple. The clamping member 8 is provided with a guide slope 81. In this embodiment, the clamping element 8 is rotatably connected to a second post 323 on the blocking element 3. The clamping member 8 is provided with a second groove (not shown) on the face facing the third receiving groove 324.

As shown in fig. 4, the second elastic member 9 is interposed between the blocking member 3 and the clamping member 8. The second elastic member 9 acts on the blocking member 3 at one end and on the clamping member 8 at the other end to urge the clamping member 8 against the side wall of the blocking member 3. In this embodiment, the second elastic member 9 is a torsion spring, which is disposed in the third accommodating groove 324, and has an active end disposed in the first column 322 and acting on the first column 322, and another end disposed in the second groove of the clamping member 8 and acting on the clamping member 8.

As shown in fig. 6, the guide inclined surface 81 on the clamping member 8 forms an opening with the side wall of the blocking member 3 into which the door is inserted in the first direction D1 when the clamping member 8 abuts against the side wall of the blocking member 3, so that it is ensured that the clamping member 8 is adapted to be moved in a direction away from the side wall of the blocking member 3 by being pushed by the door moving in the first direction D1, so that the door is clamped between the blocking member 3 and the clamping member 8. When the door is clamped between the blocking member 3 and the clamping member 8, the door drives the blocking member 3 to move along the first direction D1 or the blocking member 3 drives the door to move along the first direction D1; the door is adapted to disengage from the grip of the gripping member 8 when moving in the second direction D2.

The door of this embodiment is installed:

as shown in fig. 1 to 8, first, the second elastic member 9 is placed in the third receiving groove 324, and then the clamping member 8 is rotatably connected with the blocking portion 32. Then, the two first protruding shafts 325 of the blocking portion 32 are respectively installed in the sliding groove 221 and the first shaft hole 315. After that, the two second protruding shafts 512 of the swing member 5 are respectively installed in the slide groove 221 and the first groove 314, while the two protruding portions 513 are respectively installed in the slide groove 221 and the first groove 314. Next, the first fixing member 33 is placed in the case body 22 and engaged with the first mounting hole 313 of the first sheet 311 through the first mounting block 331. Then, the connecting member 52 is rotatably connected to the second shaft 512 of the swinging member 5. After that, the second fixing member 523 is placed in the case body 22 and the second mounting block 5231 is fitted with the second mounting hole of the connection member 52.

Next, the damping member 4 is mounted in the second accommodating groove 225, the movable end thereof is locked in the fourth locking groove 334 of the first fixing member 33, and the other end abuts against the boss 222. The oil cylinder 61 is arranged in the first accommodating groove 224, and the first piston 62 of the oil cylinder 61 is clamped in the second clamping groove 332 of the first fixing piece 33; the second piston 63 is engaged in the fifth engagement groove 5232 of the second fixing member 523. Next, the first elastic member 7 is mounted in the first catch groove 223 of the boss 222 at one end and in the third catch groove 333 of the first fixing member 33 at the other end. Finally, the cover 23 is put on the case body. When mounted, the blocking portion 32 and the clamping member 8 always protrude through the first opening 211 of the receiving chamber 21. When the swinging member 5 is in the first state, the blocking surface 5113 thereof extends out of the first opening 211 of the accommodating cavity 21; when the swinging member 5 is in the second state, the blocking surface 5113 thereof is located in the accommodating chamber 21.

Then, the first housing 2 is mounted on the inner wall of the upper frame body slide rail, and the mounting is completed.

The following describes in detail the movement process of the labor-saving damping device when the door is opened and closed:

as shown in fig. 7, the swing member body 51 of the initial state labor-saving damping device is in the second state, and the first elastic member 7 is in the stretched state. As shown in fig. 3, since the second groove segment 2212 of the slide groove 221 is inclined to the first direction D1, the protruding portion 513 of the swinging member 5 is limited in the first direction D1 when being positioned in the second groove segment 2212. Moreover, the first elastic member 7 cannot separate the swinging member 5 from the second state, so that the swinging member 5 cannot separate from the second state under the action of the first elastic member 7, and the labor-saving damping device is ensured to be kept in the initial state, so that the pushing block 1 can push the blocking member 3 when the door is closed, and the door is buffered.

As shown in fig. 7, when the door is slidably closed in the first direction D1, the pushing block 1 on the door pushes against the guide inclined surface 81 of the clamping member 8 when approaching the side frame, so that the clamping member 8 moves toward the side wall away from the blocking member 3, the pushing block 1 is clamped between the blocking member 3 and the clamping member 8 by the second elastic member 9, and the blocking member 3 is interlocked with the door. At this time, the door may drive the blocking member 3 to move along the first direction D1, and the blocking member 3 may also drive the door to move along the first direction D1.

During the process of closing the door, the sliding piece 31 slides along the first direction D1, and the first fixing piece 33 also slides along the first direction D1, so that the damping piece 4 is compressed and stored, and resistance is generated on the blocking piece 3, so that the door is buffered and cannot collide with the side frame. As the first fixing member 33 slides in the first direction D1, the first piston 62 of the cylinder 61 moves in the first direction D1, so that the first segment 611 of the cylinder 61 is compressed, and the second segment 612 protrudes in the first direction D1 to move the swinging member 5 in the first direction D1, so that the swinging member body 51 is shifted from the second groove segment 2212 of the slide groove 221 into the first groove segment 2211 to the first state, so that the blocking surface 5113 is adapted to be pushed by the door sliding in the first direction D1.

Because the first elastic member 7 makes the blocking member 3 always have a tendency to move toward the first direction D1, the first elastic member 7 can assist the door to move along the first direction D1 during the movement of the door along the first direction D1, which is more labor-saving and can realize automatic door closing after releasing hands. When the door is closed, the swinging member body 51 is in the first state and approaches the pushing block 1. The first elastic member 7 is still in tension and applies a force to the blocking member 3 in the first direction D1 so that the door is closed. Fig. 8 shows a schematic view of the state of the labor-saving damping device after the door is closed.

As shown in fig. 7 and 8, in the door-closing state, when the door needs to be opened, the swinging member 5 is pushed against to enter the second state, the door can be opened continuously, and the linkage mechanism 6 is assisted to reset, so that the blocking member 3, the damping member 4, the first elastic member 7 and the oil cylinder 61 are reset to the initial state; in this way, the door can push the blocking member 3 in the first direction D1 to be buffered when the door is closed again. Therefore, when the door is opened, the pushing block 1 pushes the blocking surface 5113 of the swinging member 5, so that the swinging member 5 moves along the second direction D2, the linkage mechanism 6 is reset, and the blocking member 3, the damping member 4 and the first elastic member 7 are driven to be reset. During the sliding of the oscillating member 5 in the second direction D2, the second fixing member 523 pushes against the second piston 63 of the cylinder 61, so that the second section 612 of the cylinder 61 is compressed and the first section 611 thereof is extended in the second direction D2. The first section 611 of the oil cylinder 61 drives the blocking member 3 to move and reset along the second direction D2 in the process of extending along the second direction D2, and meanwhile, the damping member 4 and the first elastic member 7 also reset along the second direction D2. Until the swinging member body 51 slides into the second groove segment 2212 of the sliding groove 221 and the fourth groove segment 3142 of the first groove 314, the swinging member 5 is in the second state, and the blocking surface 5113 rotates to be located in the accommodating cavity 21 and is no longer pushed by the door, and the door can continue to slide along the second direction D2 without being blocked by the blocking surface 5113 to be opened. At the same time, the blocking member 3, the damping member 4, the first elastic member 7 and the oil cylinder 61 are also reset, so that the door can be pushed against the blocking member 3 to be buffered when the door is closed next time.

As shown in fig. 7 and 8, it can be known from the process of closing the door that the blocking member 3, the damping member 4, the first elastic member 7 and the first section 611 of the cylinder 61 are all moved by the same distance L in the first direction D1 with respect to the initial state. Therefore, in the process of opening the door, the pushing block 1 needs to push the swinging member 5 to enable the blocking member 3, the damping member 4, the first elastic member 7 and the first section 611 of the oil cylinder 61 to move along the second direction D2 for a distance L to return, and in this process, the force of opening the door by hand needs to overcome the resistance generated by the blocking member 3, the damping member 4, the first elastic member 7 and the first section 611 of the oil cylinder 61 in the return process, because the first elastic member 7 is gradually elongated in the return process, and most of the resistance comes from the first elastic member 7. Since the work required to be done by the door opening pushing against the swinging member 5 against the resistance is constant. By setting the cross section of the first section 611 of the oil cylinder 61 to be larger than the cross section of the second section 612, the movement stroke of the swinging member 5 is larger than the movement stroke of the blocking member 3, and the door opening force is smaller and more labor-saving under the condition of constant work. In this embodiment, the stroke of the swinging member 5 is 2 times that of the blocking member 3, so that the swinging member 5 is pushed to move by 2L along the second direction D2 when the door is opened, so that the blocking member 3, the damping member 4, the first elastic member 7 and the oil cylinder 61 are reset by 2L along the second direction D2, and therefore, the stroke of the door opening is twice that of the door closing, and the door opening force is reduced by half compared with the door closing force under the same working condition. It should be appreciated that in other embodiments, the ratio of the areas of the cross-sections of the first and second sections 611, 612 of the ram 61 may be varied as desired.

Embodiment two:

as shown in fig. 9 to 11, the present embodiment differs from the first embodiment in that the structure of the swinging member 5, the blocking member 3, the first housing 2, and the linkage mechanism 6 are different.

In this embodiment, as shown in fig. 9, the structure of the swinging member 5 is that a second projection 53 is added to the top wall of the first arm 5111 on the basis of the swinging member body 51 in the first embodiment, and the swinging member 5 is mounted in the same manner as the swinging member body 51 in the first embodiment.

As shown in fig. 9, the blocking member 3 is different in structure from the slide 31 and the first fixing member 33 in comparison with the first embodiment. Compared with the first embodiment, the sliding piece 31 is provided with a third mounting hole 316 on the second sheet 312. The third mounting hole 316 is located above the first shaft hole 315. The first fixing member 33 has fewer second clamping grooves 332 than the first embodiment, and only third clamping grooves 333 and fourth clamping grooves 334.

As shown in fig. 9, the first housing 2 has the housing body 22 with the first receiving groove 224 removed and only the third receiving groove 324 left, compared with the first embodiment. The first clamping groove 223 on the boss 222 increases in length along the first direction D1, and openings are provided at both ends along the first direction D1. And the boss 222 is additionally provided with a seventh clamping groove 226, and both ends of the seventh clamping groove 226 along the first direction D1 are provided with openings and are communicated with the first clamping groove 223.

As shown in fig. 9, the linkage 6 includes a pulley 64 and a pulling rope 65. The pulley 64 is mounted on the blocking member 3 and rotates relative to the blocking member 3 about a second axis perpendicular to the first direction D1. The pulling rope 65 abuts against the pulley 64, and one end is connected to the swinging member 5, and the other end is connected to the door frame.

Specifically, as shown in fig. 9 and 10, the pulley 64 is mounted at the position of the third mounting hole 316 of the second sheet 312 by a screw. In the present embodiment, the second axis is parallel to the swing axis of the swing member 5. One end of the pulling rope 65 is screwed on the second bump 53 of the swinging member 5, and the other end is screwed and fixed in the seventh clamping groove 226.

In this embodiment, as shown in fig. 9 to 11, the movement process of the labor-saving damping device is substantially the same when the door is opened and closed, and the difference is that the linkage mode of the linkage mechanism 6 is changed. Since the pulley 64 is mounted on the blocking member 3, a movable pulley structure is formed with the pulling rope 65, the linkage of the swinging member 5 and the blocking member 3 is realized, and the movement stroke of the swinging member 5 is made larger than that of the blocking member 3. From the principle of the structure of the movable pulley 64, it can be known that the movement stroke of the swinging member 5 is 2 times that of the blocking member 3. Therefore, as with the embodiment, the stroke of opening the door is twice that of closing the door, and under the condition of the same work, the force when opening the door is reduced by half compared with the force when closing the door. It should be understood that the ratio of the movement stroke of the swinging member 5 to the movement stroke of the blocking member 3 may be adjusted according to the actual requirement by increasing the number of pulleys 64.

Embodiment III:

as shown in fig. 12 and 13, the present embodiment differs from the first embodiment in that the structure of the swinging member 5, the blocking member 3, the first housing 2, and the linkage mechanism 6 are different.

In the present embodiment, the structure of the swinging member 5 is the same as that of the swinging member body 51 in the first embodiment, and the mounting manner is also the same.

The blocking member 3 is different in structure from the first fixing member 33 in comparison with the embodiment, and the first fixing member 33 of the present embodiment is different from the first embodiment in that the second clamping groove 332 is removed and only the third clamping groove 333 and the fourth clamping groove 334 are provided.

The first housing 2 has the housing body 22 with the first receiving groove 224 removed and only the third receiving groove 324 left, as compared with the first embodiment.

As shown in fig. 13, the linkage mechanism 6 includes a first rack 66, a second rack 6921, a first gear 67, and a second gear 68. The first rack 66 is provided on the blocking member 3 and extends in the first direction D1. The second rack 6921 extends in the first direction D1 and is rotatably connected to the swinging member 5 about a swinging axis; the first gear 67 is in coaxial rotation-stopping connection with the second gear 68, and is in rotation connection with the upper frame around a third axis perpendicular to the first direction D1, and the number of teeth of the first gear 67 is smaller than that of the second gear 68; the first gear 67 is meshed with the first rack 66, and the second gear 68 is meshed with the second rack 6921; and the first rack 66 and the second rack 6921 move in the same direction, respectively.

Specifically, the first rack 66 is disposed on the second sheet 312 of the blocking member 3, and the first rack 66 faces the bottom end of the accommodating chamber 21. The linkage mechanism 6 includes a first plate 691 body, and the first plate 691 body includes a plate body and a third bump 693. The plate body includes a first plate 691 and a second plate 692 integrally connected to each other. The first plate 691 extends along a first direction D1 and is perpendicular to a fourth direction D4. The second sheet 692 extends along the first direction D1 and is perpendicular to the third direction D3. A third projection 693 is provided on the bottom wall of the second plate 692, the third projection 693 being rotatably connected to the second projection 512 of the swinging member 5 located in the first slot 314. The bottom wall of the first plate 691 is provided with a second rack 6921.

The first gear 67 and the second gear 68 are coaxially and rotationally connected to the inner wall of the boss 222 provided on the case body 22 and the inner wall of the cover 23 about the third axis. The third axis is parallel to the oscillating axis of the oscillating piece 5.

In this embodiment, the motion process of the labor-saving damping device is approximately the same when the door is opened and closed, and the difference is that the linkage mode of the linkage mechanism 6 is changed.

Since the first gear 67 and the second gear 68 are connected in a coaxial rotation-stopping manner, when the blocking member 3 or the swinging member 5 moves, the corresponding racks slide to rotate the first gear 67 and the second gear 68, so that the swinging member 5 and the blocking member 3 are linked. Since the number of teeth of the first gear 67 is smaller than that of the second gear 68, the movement stroke of the swinging member 5 is larger than that of the blocking member 3.

More specifically, when the blocking portion 32 moves in the first direction D1, the first rack 66 moves in the first direction D1, causing the first gear 67 to rotate clockwise. The second gear 68 also rotates clockwise, so that the second rack 6921 moves in the first direction D1, and the swinging member 5 is moved in the first direction D1. When the swinging member 5 moves along the second direction D2, the second rack 6921 moves along the second direction D2, and the second gear 68 is driven to rotate counterclockwise. The first gear 67 also rotates counterclockwise, so that the first rack 66 moves in the second direction D2, driving the blocking member 3 to move in the second direction D2. By setting the number of teeth of the first gear 67 smaller than the second number of teeth of the second gear 68, the number of teeth of the first gear 67 is half that of the second gear 68 in the present embodiment. Thus, the movement stroke of the swinging member 5 is 2 times that of the blocking member 3. Therefore, as with the embodiment, the stroke of opening the door is twice that of closing the door, and under the condition of the same work, the force when opening the door is reduced by half compared with that when closing the door. It will be appreciated that the ratio of the movement stroke of the oscillating member 5 to the movement stroke of the blocking member 3 can be adjusted according to the actual requirements by varying the ratio of the first tooth number to the second tooth number.

The foregoing description of the embodiments and description is presented to illustrate the scope of the invention, but is not to be construed as limiting the scope of the invention. Modifications, equivalents, and other improvements to the embodiments of the invention or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the invention or the teachings of the embodiments, are intended to be included within the scope of the invention, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims (11)

1. A labour-saving damping device arranged between a first object and a second object, the second object sliding in a first direction (D1) relative to the first object to close or in a second direction (D2) facing away from the first direction (D1) to open, characterized by comprising:

a blocking member (3) adapted to be pushed by the second object to slide in the first direction (D1) relative to said first object during at least part of the sliding of the second object in the first direction (D1);

the two ends of the damping piece (4) are respectively connected with the first object and the blocking piece (3), and energy is stored when the blocking piece (3) slides along the first direction (D1) so as to buffer the movement of the second object along the first direction (D1);

A swinging member (5) provided with a swinging axis and a blocking surface (5113) and adapted to cooperate with said first object and/or said blocking member (3) to swing around said swinging axis between a first state in which said blocking surface (5113) is adapted to be pushed by a second object sliding in a second direction (D2), and a second state in which said blocking surface (5113) is rotated so as not to be pushed by said second object any more; the swinging member (5) is configured to be in a first state and then to be in a second state when sliding along a second direction (D2), and is configured to be in the second state and then to be in the first state when sliding along the first direction (D1);

and the linkage mechanism (6) is arranged between the blocking piece (3) and the swinging piece (5) so as to lead the blocking piece (3) and the swinging piece (5) to be in same-direction linkage and lead the movement stroke of the swinging piece (5) to be larger than that of the blocking piece (3).

2. A labor-saving damping device according to claim 1, characterized by further comprising a first elastic member (7), a clamping member (8) and a second elastic member (9);

one end of the clamping piece (8) is connected with the blocking piece (3);

the second elastic element (9) is interposed between the blocking element (3) and the clamping element (8); one end of the second elastic piece (9) acts on the blocking piece (3), and the other end acts on the clamping piece (8) to drive the clamping piece (8) to prop against the side wall of the blocking piece (3);

-said clamping member (8) being adapted to be urged against movement in a direction away from a side wall of said blocking member (3) by said second object being moved in a first direction (D1) so as to clamp said second object between said blocking member (3) and said clamping member (8);

when the second object is clamped between the blocking piece (3) and the clamping piece (8), the second object drives the blocking piece (3) to move along a first direction (D1) or the blocking piece (3) drives the second object to move along the first direction (D1);

-said second object is adapted to disengage from the grip of said gripping element (8) when moving in said second direction (D2);

a first elastic member (7) is interposed between the blocking member (3) and the first object so that the blocking member (3) always has a tendency to move towards the first direction (D1).

3. A labor-saving damping device according to claim 2, characterized in that the clamping member (8) is provided with a guiding inclined surface (81) so that an opening for the second object to extend in the first direction (D1) is formed with the side wall of the blocking member (3) when the clamping member (8) abuts against the side wall of the blocking member (3).

4. A labor-saving damping device according to claim 2, characterized in that the clamping member (8) is rotatably connected to the blocking member (3) about a first axis perpendicular to the first direction (D1) to move in a direction away from the side wall of the blocking member (3) when being pushed against by the second object moving in the first direction (D1).

5. A labor-saving damping device according to claim 2, characterized in that the first object is provided with a chute (221); the chute (221) comprises a first chute section (2211) and a second chute section (2212) which are communicated with each other; -the first groove section (2211) extends along a first direction (D1), the second groove section (2212) being inclined to the first direction (D1);

a bulge (513) is arranged on the swinging piece (5);

the oscillating piece (5) is in a first state when the projection (513) is located in the first groove section (2211); when the protruding part (513) is positioned on the second groove section (2212), the swinging piece (5) is in a second state, and the first elastic piece (7) cannot enable the swinging piece (5) to be separated from the second state.

6. A labor-saving damping device according to claim 1, characterized in that the linkage mechanism (6) comprises an oil cylinder (61), a first piston (62) and a second piston (63), wherein the first piston (62) and the second piston (63) are positioned at two ends of the oil cylinder (61) along a first direction (D1); the oil cylinder (61) comprises a first section (611) and a second section (612) which are communicated with each other, the cross section of the first section (611) is larger than that of the second section (612), the first piston (62) moves in the first section (611) and is connected with the blocking piece (3), and the second piston (63) moves in the second section (612) and is connected with the swinging piece (5).

7. A labor-saving damping device according to claim 6, characterized in that the oscillating piece (5) comprises an oscillating piece body (51) and a connecting piece (52);

the swing member body (51) is provided with the swing shaft and a blocking surface (5113) and is suitable for being matched with the first object or the blocking member (3) to swing between a first state and a second state around the swing shaft;

the connecting piece (52) is rotationally connected with the swinging piece body (51) around the swinging shaft;

the second piston (63) moves in the second section (612) and is connected to the connecting piece (52).

8. A labor-saving damping device according to claim 1, characterized in that the linkage (6) comprises a pulley (64) and a pulling rope (65);

the pulley (64) is arranged on the blocking piece (3) and rotates relative to the blocking piece (3) around a second axis perpendicular to the first direction (D1);

the traction rope (65) is abutted against the pulley (64), one end of the traction rope is connected with the swinging piece (5), and the other end of the traction rope is connected with the first object.

9. A labor-saving damping device according to claim 1, characterized in that the linkage (6) comprises a first rack (66), a second rack (6921), a first gear (67) and a second gear (68);

the first rack (66) is arranged on the blocking piece (3) and extends along a first direction (D1);

The second rack (6921) extends along a first direction (D1) and is rotatably connected with the swinging piece (5) around the swinging shaft;

the first gear (67) is in coaxial rotation-stopping connection with the second gear (68) and is in rotation connection with the first object around a third axis perpendicular to the first direction (D1), and the number of teeth of the first gear (67) is smaller than that of the second gear (68);

the first gear (67) is meshed with the first rack (66), and the second gear (68) is meshed with the second rack (6921); and the first rack (66) and the second rack (6921) move in the same direction, respectively.

10. A sliding door comprising a door frame, a door and at least one labour-saving damping means according to any one of the preceding claims 1 to 9;

the door frame comprises an upper frame, a lower frame and two side frames; the upper frame forms the first object, and at least one end of the upper frame is provided with the labor-saving damping device; the door forms the second object.

11. A sliding door according to claim 10, wherein the upper frame comprises an upper frame body and a first housing (2);

the upper frame body is provided with a sliding rail;

the first shell (2) is fixed on the inner wall of the sliding rail, and the labor-saving damping device is arranged in the first shell (2).

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