CN220756975U - Chair set - Google Patents

Abstract

The utility model relates to the technical field of seat frames, in particular to a chair, which comprises a base, an installation seat, a seat frame, a leg rest assembly, a backrest assembly and a driving assembly, wherein the driving assembly comprises a first connecting rod, a push rod, a rotating shaft hinged with one end of the seat frame far away from the leg rest assembly and a linkage structure; one end of the first connecting rod is fixedly connected with the rotating shaft, the other end of the first connecting rod is hinged with one end of the pushing rod, and the other end of the pushing rod is hinged with the leg rest assembly; the rotating shaft can drive the leg rest assembly to unfold or fold relative to the seat frame and can also drive the seat frame to rotate relative to the mounting seat. The utility model has simple and compact structure, the rotating shaft synchronously drives the leg rest assembly, the seat frame and the backrest assembly to move through the first connecting rod, the linkage structure and the pushing rod, thereby facilitating the posture conversion of the chair, saving the power source required by the posture adjustment of the chair and having good synchronism of the backrest assembly and the leg rest assembly during the posture adjustment of the chair.

Description

Chair set

Technical Field

The utility model relates to the technical field of seat frames, in particular to a chair.

Background

With the development of the age and the continuous progress of technology, the consumption level and living requirements of people are continuously improved, and the requirements of people on seats are increasingly higher.

The patent application number is: CN202221061206.1, patent application name discloses a simple structure's seat frame's patent in including the base, with the articulated handrail frame of base, respectively with handrail frame and the articulated shank link assembly of base, rotate the actuating mechanism first of setting on the base, with the articulated back subassembly of handrail frame and with the actuating mechanism second of leaning the subassembly and rotate the actuating mechanism who is connected, the output of actuating mechanism first and the output of actuating mechanism second are articulated with handrail frame respectively.

The leg link assembly and the backrest assembly in this patent application are required to be driven by two drive machine components, and are costly to produce, install and debug. In addition, the leg connecting rod assembly and the backrest assembly are complex in connection structure with the armrest frame, so that the leg stretching structure is easy to be blocked or move irregularly in the stretching or folding process, and the use experience of a user is affected. Thus, the drawbacks are quite apparent and there is a need to provide a solution.

Disclosure of Invention

In order to solve the above technical problems, an object of the present utility model is to provide a chair.

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

the chair comprises a base, a mounting seat arranged on the base, a seat frame hinged with the mounting seat, a leg rest assembly and a backrest assembly respectively hinged with the seat frame, and a driving assembly arranged on the seat frame, wherein the driving assembly comprises a first connecting rod, a pushing rod, a rotating shaft hinged with one end of the seat frame far away from the leg rest assembly, and a linkage structure respectively connected with the mounting seat and the first connecting rod; one end of the first connecting rod is fixedly connected with the rotating shaft, the other end of the first connecting rod is hinged with one end of the pushing rod, and the other end of the pushing rod is hinged with the leg rest assembly; the rotating shaft can be matched with the pushing rod through the first connecting rod to drive the leg rest assembly to be unfolded or folded relative to the seat frame, and can also be matched with the linkage structure through the first connecting rod to drive the seat frame to rotate relative to the mounting seat.

Further, the driving assembly further comprises a mounting shaft arranged on the seat frame, a driving mechanism hinged with the mounting shaft, an output shaft arranged at the output end of the driving mechanism, and a fourth connecting rod with one end hinged with the output shaft, and the other end of the fourth connecting rod is fixedly connected with the rotating shaft.

Further, the mount pad includes the seat body of being connected with the base, rotates the connecting axle of being connected with the seat frame and the connecting plate of being connected with connecting axle and seat body respectively, the linkage structure is including setting up the guide way on the connecting plate and with the inner wall sliding connection's of guide way second pulley, the second pulley is kept away from the one end rotation connection of rotation axis with first link.

Further, the leg rest assembly comprises a second connecting rod, a third connecting rod, a rotating rod, a pushing shaft and a leg-building piece; the other end of the pushing rod is hinged with one end of the rotating rod, the other end of the rotating rod is hinged with one end of the pushing shaft, one end of the second connecting rod is hinged with one end of the seat frame far away from the rotating shaft, the other end of the second connecting rod is hinged with the middle of the leg-building piece, the other end of the pushing shaft is connected with one end of the second connecting rod, which is close to the seat frame, one end of the third connecting rod is hinged with the middle of the seat frame, and the other end of the third connecting rod is hinged with one end of the leg-building piece.

Further, the seat frame comprises two seat plates which are oppositely arranged, the rotating shafts are respectively connected with the two seat plates in a rotating mode, the second connecting rod, the third connecting rod, the pushing rod, the first connecting rod, the rotating rod and the pushing shaft are respectively located between the two seat plates, and the second connecting rod and the third connecting rod are respectively hinged to the two seat plates.

Further, the leg-building piece comprises two support plates and leg-building plates connected with one ends of the two support plates respectively, the third connecting rod is hinged with the other ends of the two support plates respectively, and the second connecting rod is connected with the middle parts of the two support plates in a rotating mode respectively.

Further, the chair also comprises a chute arranged on a seat plate and a first pulley which is in sliding connection with the inner wall of the chute, and the first pulley is in rotary connection with one end of the pushing rod, which is far away from the first connecting rod.

Further, the leg rest assembly further comprises a fifth connecting rod, wherein two ends of the fifth connecting rod are respectively hinged with the second connecting rod and the third connecting rod.

The utility model has the beneficial effects that: the utility model has simple and compact structure, the rotating shaft synchronously drives the leg rest assembly, the seat frame and the backrest assembly to move through the first connecting rod, the linkage structure and the pushing rod, thereby facilitating the posture conversion of the chair, saving the power source required by the posture adjustment of the chair, saving the production cost and having good synchronism of the backrest assembly and the leg rest assembly during the adjustment of the chair.

Drawings

Fig. 1 is a schematic perspective view of the present utility model in a sitting posture.

Fig. 2 is a schematic view of a partial perspective view of the present utility model in a lying state.

Fig. 3 is a schematic view of a partial three-dimensional structure in a lying state of the present utility model.

Fig. 4 is a schematic view of a partial three-dimensional structure in a lying state of the present utility model.

Fig. 5 is a schematic view of a partial perspective view of the present utility model in a sitting position.

Reference numerals illustrate:

1. a seat frame; 2. a base; 3. a mounting base; 4. a leg rest assembly; 5. a backrest assembly; 6. a drive assembly; 7. a rotation shaft; 8. a first link; 9. a push rod; 10. a linkage structure; 11. a mounting shaft; 12. a fourth link; 13. a seat body; 14. a connecting shaft; 15. a connecting plate; 16. a guide groove; 17. a second pulley; 18. a rotating lever; 19. a pushing shaft; 20. a second link; 21. a third link; 22. a seat plate; 23. a first rotating shaft; 24. leg-building pieces; 25. a second rotating shaft; 26. a guide member; 27. a support plate; 28. leg-building plates; 29. a chute; 30. a first pulley; 31. and a fifth connecting rod.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

As shown in fig. 1 to 5, the chair provided by the utility model comprises a base 2, a mounting seat 3 arranged on the base 2, a seat frame 1 hinged with the mounting seat 3, a leg rest assembly 4 and a backrest assembly 5 respectively hinged with the seat frame 1, and a driving assembly 6 arranged on the seat frame 1, wherein the driving assembly 6 comprises a first connecting rod 8, a push rod 9, a rotating shaft 7 hinged with one end of the seat frame 1 far away from the leg rest assembly 4, and a linkage structure 10 respectively connected with the mounting seat 3 and the first connecting rod 8; one end of the first connecting rod 8 is fixedly connected with the rotating shaft 7, the other end of the first connecting rod 8 is hinged with one end of the pushing rod 9, and the other end of the pushing rod 9 is hinged with the leg rest assembly 4; the rotating shaft 7 can be matched with the pushing rod 9 through the first connecting rod 8 to drive the leg rest assembly 4 to be unfolded or folded relative to the seat frame 1, and can also be matched with the linkage structure 10 through the first connecting rod 8 to drive the seat frame 1 to rotate relative to the mounting seat 3.

Specifically, the driving assembly 6 further includes a mounting shaft 11 disposed on the seat frame 1, a driving mechanism (not shown in the drawing) hinged to the mounting shaft 11, an output shaft (not shown in the drawing) disposed at an output end of the driving mechanism, and a fourth link 12 having one end hinged to the output shaft, where the other end of the fourth link 12 is fixedly connected to the rotating shaft 7. The driving mechanism comprises a shell and a driving body arranged in the shell, and the driving body is used for driving the output shaft to extend out or sit in the shell. The fourth link 12 is L-shaped.

In the practical use process, when the chair is in a sitting posture state, the length of the output shaft extending out of the shell is longest, the leg-building piece 24 is folded below the seat frame 1, the backrest component 5 is in an upright state, when the chair is required to be converted from the sitting posture state to a lying state, the driving mechanism is started, the driving mechanism drives the output shaft to retract into the shell, the output shaft drives the rotating shaft 7 to rotate relative to the seat frame 1 through the fourth connecting rod 12, the rotating shaft 7 rotates and drives the pushing rod 9 to push the leg rest component 4 in a direction far away from the rotating shaft 7 through the first connecting rod 8, meanwhile, the first connecting rod 8 synchronously drives the seat frame 1 to rotate relative to the mounting seat 3 through the linkage structure 10 until the length of the output shaft extending out of the shell is shortest, the leg rest component 4 extends out of the lower side of the seat frame 1 and is unfolded, the seat frame 1 drives the backrest component 5 to incline to a zero gravity state relative to the mounting seat 3, and the chair is converted into the lying state. Conversely, the chair can be changed from a lying state to a sitting state. The utility model has simple and compact structure, the rotating shaft 7 synchronously drives the leg rest assembly 4, the seat frame 1 and the backrest assembly 5 to move through the first connecting rod 8, the linkage structure 10 and the pushing rod 9, thereby facilitating the posture conversion of the chair, saving the power source required by the posture adjustment of the chair, saving the production cost and having good synchronism of the backrest assembly 5 and the leg rest assembly 4 during the adjustment of the chair.

Further, the mounting seat 3 includes a seat body 13 connected with the base 2, a connecting shaft 14 rotatably connected with the seat frame 1, and a connecting plate 15 fixedly connected with the connecting shaft 14 and the seat body 13, respectively, the linkage structure 10 includes a guiding groove 16 disposed on the connecting plate 15, and a second pulley 17 slidably connected with an inner wall of the guiding groove 16, and the second pulley 17 is rotatably connected with one end of the first connecting rod 8 far away from the rotating shaft 7.

In the actual use process, as the base 2 is fixed on the ground, the connecting plate 15, the connecting shaft 14, the guide groove 16 and the seat body 13 are synchronously fixed through the base 2, the track of the guide groove 16 limits the movement of the second pulley 17, when the chair is converted from a sitting posture to a lying posture, the rotating shaft 7 drives the first connecting rod 8 to push the second pulley 17 to slide in the guide groove 16, the second pulley 17 limits and guides through the guide groove 16, the guide groove 16 can provide a reverse acting force for the second pulley 17, so that the second pulley 17 can reversely push the first connecting rod 8 when sliding in the guide groove 16, namely, the second pulley 17 drives the seat frame 1 to rotate to tilt upwards (one end of the seat frame 1 far away from the rotating shaft 7 is tilted upwards) relative to the connecting shaft 14 through the first connecting rod 8 and the rotating shaft 7, thereby realizing the adjustment of the angle of the seat frame 1 relative to the mounting seat 3, the tilting of the seat frame 1 and the backrest assembly 5, and being beneficial to the lying posture of the chair in a zero gravity state. The shape of the guide groove 16 can be adjusted according to the actual rotation requirement, and will not be described herein. The linkage structure 10 has a simple and compact structure, and the linkage structure 10 is convenient to connect with the mounting seat 3 and the first connecting rod 8.

Specifically, the driving mechanism and the output shaft may use an existing cylinder or an electric push rod, which will not be described herein.

Further, the leg rest assembly 4 comprises a second connecting rod 20, a third connecting rod 21, a rotating rod 18, a pushing shaft 19 and a leg-carrying piece 24; the other end of the pushing rod 9 is hinged to one end of the rotating rod 18, the other end of the rotating rod 18 is hinged to one end of the pushing shaft 19, one end of the second connecting rod 20 is hinged to one end of the seat frame 1 far away from the rotating shaft 7, the other end of the second connecting rod 20 is hinged to the middle of the leg-building piece 24, the other end of the pushing shaft 19 is fixedly connected with one end of the second connecting rod 20 close to the seat frame 1, one end of the third connecting rod 21 is hinged to the middle of the seat frame 1, and the other end of the third connecting rod 21 is hinged to one end of the leg-building piece 24.

In the practical use process, the rotating shaft 7 rotates and drives the pushing rod 9 to push the rotating rod 18 in a direction away from the rotating shaft 7 through the first connecting rod 8, the rotating rod 18 rotates relative to the pushing shaft 19 and the pushing rod 9 and can push the second connecting rod 20 in a direction away from the rotating shaft 7 through the pushing shaft 19, the second connecting rod 20 rotates relative to the seat frame 1 and drives the leg-building piece 24 to be unfolded in a direction away from the rotating shaft 7, meanwhile, the third connecting rod 21 can rotate relative to the leg-building piece 24 and the seat frame 1 respectively to guide the unfolding of the leg-building piece 24, the rotating rod 18 and the pushing shaft 19 move from one side, close to the rotating shaft 7, of the second connecting rod 20 to one side, away from the rotating shaft 7, of the second connecting rod 19 and the second connecting rod 20 serve as circle centers, so that the second connecting rod 20 can swing or rotate at a large angle relative to the seat frame 1 until the length of the output shaft extending out of the shell is shortest, and the leg leaning component 4 is in an unfolded state. The leg rest assembly 4 has a simple and compact structure, the driving assembly 6 is in driving connection with the rotating rod 18, the second connecting rod 20 is pushed to rotate relative to the seat frame 1 by the cooperation of the rotating rod 18 and the pushing shaft 19, and the third connecting rod 21 is synchronously driven to rotate relative to the seat frame 1, so that the leg rest 24 is stably and smoothly unfolded and folded. The rotation shaft 7 is fixedly connected with the first connecting rod 8, so that the first connecting rod 8 can stably push out the push rod 9 in a direction away from the rotation shaft 7.

Further, the seat frame 1 includes two seat plates 22 disposed opposite to each other, the rotation shaft 7 is rotatably connected to the two seat plates 22, the second link 20, the third link 21, the push rod 9, the first link 8, the rotation rod 18 and the push shaft 19 are respectively located between the two seat plates 22, and the second link 20 and the third link 21 are respectively hinged to the two seat plates 22.

Specifically, the leg rest assembly 4 further includes two first rotating shafts 23 fixedly connected to two ends of the second connecting rod 20, and two seat plates 22 are rotatably connected to two ends of one first rotating shaft 23; the other two ends of the first rotating shaft 23 are respectively connected with the leg-building piece 24 in a rotating way. The leg rest assembly 4 further comprises a second rotating shaft 25 fixedly connected with one end of the third connecting rod 21 and a guide piece 26 fixedly connected with the other end of the third connecting rod 21, two ends of the second rotating shaft 25 are respectively and rotatably connected with the two seat plates 22, and the guide piece 26 is hinged with the leg-building piece 24. The guide 26 is U-shaped.

In the actual use process, the two ends of the first rotating shaft 23 and the second rotating shaft 25 are respectively inserted into the two seat plates 22 and can respectively rotate relative to the two seat plates 22, the two ends of the first rotating shaft 23 are respectively inserted into the leg-building piece 24 and can rotate relative to the leg-building piece 24, and the guide piece 26 is hinged with the leg-building piece 24, so that the second connecting rod 20 and the third connecting rod 21 rotate more smoothly and stably relative to the seat frame 1 and the leg-building piece 24. The second connecting rod 20 and the third connecting rod 21 are respectively sleeved outside the first rotating shaft 23 and the second rotating shaft 25, and the second connecting rod 20, the first rotating shaft 23, the third connecting rod 21 and the second rotating shaft 25 are respectively welded through welding equipment, so that the firmness in the connecting process is improved. The U-shaped guide piece 26 can stably push the leg piece 24 to be unfolded or folded, and the stress of the leg piece 24 is uniform. The seat frame 1 is simple and compact in structure, facilitating the connection of the seat frame 1 with the leg rest assembly 4 and the drive assembly 6.

Further, the leg-building member 24 includes two support plates 27 and leg-building plates 28 respectively connected to one ends of the two support plates 27, the guide members 26 are respectively hinged to the other ends of the two support plates 27, and two ends of the first rotating shaft 23 are respectively rotatably connected to the middle parts of the two support plates 27.

In the actual use process, the second connecting rod 20 and the third connecting rod 21 are conveniently connected with the two supporting plates 27 in a rotating way and hinged, and the second connecting rod 20 and the third connecting rod 21 are matched to drive the supporting plates 27 to be unfolded conveniently from the lower part of the seat frame 1. The leg piece 24 is simple in structure and stable in rotation process, and the user can support the legs with the leg piece with good comfort. The leg pieces 24 are easy to manufacture and produce.

Further, the chair further comprises a chute 29 arranged on the seat plate 22 and a first pulley 30 slidingly connected with the inner wall of the chute 29, wherein the first pulley 30 is rotatably connected with one end of the push rod 9 far away from the first connecting rod 8.

In the practical use process, the push rod 9 can synchronously drive the first pulley 30 to slide in the chute 29 in the moving process, the movement of the first pulley 30 is limited and guided through the track of the chute 29, the position and the direction of the push rod 9 moving relative to the seat frame 1 are further limited, the first pulley 30 sliding in the chute 29 can not interfere the movement of the push rod 9, the push rod 9 can accurately and stably drive the rotating rod 18 and the push shaft 19 to move, the precision of the utility model in the lying and sitting processes is improved, and the problems of blocking or moving non-uniformity and the like are avoided.

Further, the leg rest assembly 4 further includes a fifth link 31 hinged at both ends to the second link 20 and the third link 21, respectively. The fifth connecting rod 31 is additionally arranged, so that the synchronism of the second connecting rod 20 and the third connecting rod 21 in the process of driving the leg-building piece 24 to move is further improved.

All technical features in the embodiment can be freely combined according to actual needs.

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims (8)

1. A chair, characterized in that: the seat comprises a base (2), a mounting seat (3) arranged on the base (2), a seat frame (1) hinged with the mounting seat (3), a leg rest assembly (4) and a backrest assembly (5) respectively hinged with the seat frame (1) and a driving assembly (6) arranged on the seat frame (1), wherein the driving assembly (6) comprises a first connecting rod (8), a push rod (9), a rotating shaft (7) hinged with one end, far away from the leg rest assembly (4), of the seat frame (1) and a linkage structure (10) respectively connected with the mounting seat (3) and the first connecting rod (8); one end of the first connecting rod (8) is fixedly connected with the rotating shaft (7), the other end of the first connecting rod (8) is hinged with one end of the pushing rod (9), and the other end of the pushing rod (9) is hinged with the leg rest assembly (4); the rotating shaft (7) can be matched with the pushing rod (9) through the first connecting rod (8) to drive the leg rest assembly (4) to be unfolded or folded relative to the seat frame (1), and can also be matched with the linkage structure (10) through the first connecting rod (8) to drive the seat frame (1) to rotate relative to the mounting seat (3).

2. A chair according to claim 1, wherein: the driving assembly (6) further comprises a mounting shaft (11) arranged on the seat frame (1), a driving mechanism hinged with the mounting shaft (11), an output shaft arranged at the output end of the driving mechanism, and a fourth connecting rod (12) with one end hinged with the output shaft, wherein the other end of the fourth connecting rod (12) is fixedly connected with the rotating shaft (7).

3. A chair according to claim 1, wherein: the mounting seat (3) comprises a seat body (13) connected with the base (2), a connecting shaft (14) rotationally connected with the seat frame (1) and a connecting plate (15) respectively connected with the connecting shaft (14) and the seat body (13), the linkage structure (10) comprises a guide groove (16) arranged on the connecting plate (15) and a second pulley (17) slidingly connected with the inner wall of the guide groove (16), and the second pulley (17) is rotationally connected with one end of the first connecting rod (8) far away from the rotating shaft (7).

4. A chair according to claim 1, wherein: the leg rest assembly (4) comprises a second connecting rod (20), a third connecting rod (21), a rotating rod (18), a pushing shaft (19) and a leg-carrying piece (24); the other end of catch bar (9) is articulated with the one end of dwang (18), the other end of dwang (18) is articulated with the one end of pushing axle (19), the one end of second connecting rod (20) is articulated with the one end that rotation axis (7) was kept away from to seat frame (1), the other end of second connecting rod (20) is articulated with the middle part of leg piece (24), the other end of pushing axle (19) is connected with the one end that second connecting rod (20) is close to seat frame (1), the one end of third connecting rod (21) is articulated with the middle part of seat frame (1), the other end of third connecting rod (21) is articulated with the one end of leg piece (24).

5. A chair according to claim 4, wherein: the seat frame (1) comprises two seat plates (22) which are oppositely arranged, the rotating shafts (7) are respectively connected with the two seat plates (22) in a rotating mode, the second connecting rods (20), the third connecting rods (21), the pushing rods (9), the first connecting rods (8), the rotating rods (18) and the pushing shafts (19) are respectively located between the two seat plates (22), and the second connecting rods (20) and the third connecting rods (21) are respectively hinged to the two seat plates (22).

6. A chair according to claim 5, wherein: the leg piece (24) comprises two supporting plates (27) and leg plates (28) connected with one ends of the two supporting plates (27) respectively, the third connecting rod (21) is hinged with the other ends of the two supporting plates (27) respectively, and the second connecting rod (20) is connected with the middle parts of the two supporting plates (27) in a rotating mode respectively.

7. A chair according to claim 5, wherein: the chair also comprises a chute (29) arranged on the seat plate (22) and a first pulley (30) which is in sliding connection with the inner wall of the chute (29), wherein the first pulley (30) is in rotary connection with one end of the push rod (9) far away from the first connecting rod (8).

8. A chair according to claim 4, wherein: the leg rest assembly (4) further comprises a fifth connecting rod (31) with two ends respectively hinged with the second connecting rod (20) and the third connecting rod (21).