Seat

Abstract

The utility model discloses a seat which comprises a backrest assembly, a containing part, a cushion and a linkage structure, the linkage structure is respectively connected with the backrest assembly and the containing part, the cushion is arranged on the linkage structure, and the linkage structure can stretch or contract under the action of external force. And the backrest assembly and the cushion are controlled to move synchronously. Compared with the prior art, the seat has the advantages that the seat cushion and the backrest can be synchronously linked, so that the gravity center of the whole seat is moved forwards, the large-angle backward leaning safety is ensured, and the use experience and safety of a user are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture field especially relates to a seat. BACKGROUND

[0002] Part of the existing seat will have the function of backrest leaning back, make the seat can have two kinds of using state of sitting posture and lying posture, when the seat from sitting posture switches to lying posture, the backrest will overturn so that the user back will be inclined backward, in the process, the user's center of gravity position on the seat cushion will change along with the inclination angle, if the leaning back angle is too large, the user is easy to fall off from the seat, is not favorable to user use, influence use experience.

[0003] Therefore, based on the above problems, the existing technology needs to be further improved. INVENTION CONTENTS

[0004] In view of the problems existing in the prior art, the utility model can realize synchronous linkage of the seat cushion and the backrest to move the whole chair center of gravity forward, so as to ensure the safety of large-angle leaning back, improve user experience and safety.

[0005] In order to solve the above technical problems, the technical scheme of the utility model is:

[0006] A seat, comprising: a backrest assembly, a containing piece, a seat cushion and a linkage structure, the linkage structure is connected with the backrest assembly and the containing piece respectively, the seat cushion is arranged on the linkage structure, and the linkage structure can be stretched or contracted under the action of external force to control the synchronous movement of the backrest assembly and the seat cushion.

[0007] As a preferred, it further comprises a driving piece for driving the linkage structure to stretch or contract, the driving piece is arranged in the containing piece, and the driving piece directly or indirectly drives the linkage structure.

[0008] As a preferred, the driving piece is an electric push rod.

[0009] As a preferred, the linkage structure comprises a mounting assembly and a linkage assembly connected with the mounting assembly, the seat cushion is arranged on the mounting assembly, and the mounting assembly is connected with the containing piece.

[0010] When the linkage assembly is stretched, the backrest assembly leans back, and the mounting assembly drives the seat cushion to move away from the backrest assembly;

[0011] When the linkage assembly is contracted, the backrest assembly leans forward, and the mounting assembly drives the seat cushion to move close to the backrest assembly.

[0012] As preferred, the mounting assembly comprises an assembling piece, a first mounting piece, a second mounting piece and a third mounting piece, one end of the first mounting piece and the second mounting piece are respectively hinged with the assembling piece, and the other end of the first mounting piece and the second mounting piece are respectively hinged with the containing piece;

[0013] The linkage assembly comprises a first linkage piece, a second linkage piece, a third linkage piece, a fourth linkage piece and a fifth linkage piece, the first linkage piece is hinged with the assembling piece and fixedly connected with the backrest assembly, one end of the second linkage piece is hinged with the first linkage piece, and the other end is hinged with the third linkage piece, one end of the third linkage piece is hinged with the fifth linkage piece, and the other end is hinged with the fourth linkage piece, the fourth linkage piece is hinged with the third mounting piece, one end of the fifth linkage piece is hinged with the third linkage piece, and the other end is hinged with the first mounting piece.

[0014] As preferred, the control structure is matched with the driving piece, and is used for controlling the driving piece to drive the linkage structure to stretch and contract.

[0015] As preferred, the backrest assembly comprises a back support piece, a waist support piece, a first connecting piece and a second connecting piece, the back support piece is connected with the waist support piece through the first connecting piece; the first connecting piece comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end, the first connecting end and the second connecting end are arranged on the two sides of the waist support piece and connected with the waist support piece, and the third connecting end and the fourth connecting end are arranged on the two sides of the back support piece and connected with the back support piece.

[0016] As preferred, a first micro-motion adjusting assembly is arranged between the first connecting end and the waist support piece and / or between the second connecting end and the waist support piece.

[0017] As preferred, a second micro-motion adjusting assembly is arranged between the third connecting end and the back support piece and / or between the fourth connecting end and the back support piece.

[0018] As preferred, the headrest assembly is arranged above the backrest assembly, the headrest assembly is connected with a third connecting piece, the third connecting piece comprises a fifth connecting end, a sixth connecting end and a seventh connecting end, a third micro-motion adjusting assembly is arranged between the sixth connecting end and the headrest assembly and / or between the seventh connecting end and the headrest assembly.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The seat cushion and the backrest can be synchronously linked to move the whole chair forward, so as to ensure the safety of large-angle reclining, improve the user experience and safety. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of a seat.

[0022] Figure 2 It is a structural schematic view of a seat in use.

[0023] Figure 3 It is a structural schematic view of a seat.

[0024] Figure 4 It is a structural schematic view of a seat (without mounting) in use.

[0025] Figure 5 It is a structural schematic view of another embodiment (without mounting).

[0026] Figure 6 It is a structural schematic view of another embodiment (without mounting) in use.

[0027] Figure 7 It is a structural schematic view of a seat without reclining.

[0028] Figure 8 It is a structural schematic view of a seat with reclining.

[0029] Figure 9 It is a structural schematic view of a backrest assembly.

[0030] Figure 10 and Figure 11 It is an exploded schematic view of a backrest assembly in different directions.

[0031] Figure 12 It is a structural schematic view of a first micro-adjustment assembly.

[0032] Figure 13 and Figure 14 It is an exploded schematic view of a first micro-adjustment assembly in different directions.

[0033] Figure 15 It is a sectional view of a first micro-adjustment assembly.

[0034] Figure 16 It is Figure 10 A partial enlarged view of part A in FIG. 8.

[0035] Figure 17 It is a structural schematic view of another embodiment of a first micro-adjustment assembly.

[0036] Figure 18 It is Figure 17An exploded view of the first micro-adjustment component in the diagram. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-18 The specific embodiments of this utility model will be further described in detail to make the technical solution of this utility model easier to understand and master.

[0038] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "end", "front", "back", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved through commonly used methods in the prior art, such as bolt fixing, pin fixing, welding, or pin connection. Therefore, it will not be described in detail in this embodiment.

[0040] like Figures 1-3 As shown, a seat includes: a backrest assembly 3, a receiving member 2, a seat cushion 1, a linkage structure 4, and a bracket 6. The bracket 6 is connected to the linkage structure 4, and the linkage structure 4 is connected to the backrest assembly 3 and the receiving member 2 respectively. The seat cushion 1 is disposed on the linkage structure 4, and the linkage structure 4 can extend or retract under the action of external force to control the backrest assembly 3 and the seat cushion 1 to move synchronously.

[0041] The control structure 7 works in conjunction with the drive component 5 to control the drive component 5 to extend and retract the linkage structure 4. The control structure 7 is a commonly used structure in this field and will not be described in detail here.

[0042] This application also includes a driving member 5 for driving the linkage structure 4 to extend or retract. The driving member 5 is disposed within the receiving member 2 and directly or indirectly drives the linkage structure 4. In this embodiment, it is an electric push rod. A power supply is also provided next to the electric push rod to supply power to the electric push rod. When the driving member 5 is in the first state (the driving end of the electric push rod extends), the linkage structure 4 is in the extended state. When the driving member 5 is in the second state (the driving end of the electric push rod retracts), the linkage structure 4 is in the retracted state.

[0043] like Figures 3-6As shown, the linkage structure 4 comprises a mounting assembly 410 and a linkage assembly 420 connected with the mounting assembly 410, the seat cushion 1 is arranged on the mounting assembly 410, and the mounting assembly 410 is connected with the containing member 2; when the linkage assembly 420 is stretched, the backrest assembly 3 leans back, and the mounting assembly 410 drives the seat cushion 1 to move away from the backrest assembly 3, and when the linkage assembly 420 is retracted, the backrest assembly 3 leans forward, and the mounting assembly 410 drives the seat cushion 1 to move close to the backrest assembly 3.

[0044] The mounting assembly 410 comprises an assembling member 411, a first mounting member 412, a second mounting member 413 and a third mounting member 414, one end of the first mounting member 412 and the second mounting member 413 are respectively hinged with the assembling member 411, and the other end of the first mounting member 412 and the second mounting member 413 are respectively hinged with the containing member 2.

[0045] The linkage assembly 420 comprises a first linkage member 421, a second linkage member 422, a third linkage member 423, a fourth linkage member 424 and a fifth linkage member 425, the first linkage member 421 is hinged with the assembling member 411 and fixedly connected with the backrest assembly 3, one end of the second linkage member 422 is hinged with the first linkage member 421, and the other end is hinged with the third linkage member 423, one end of the third linkage member 423 is hinged with the fifth linkage member 425, and the other end is hinged with the fourth linkage member 424, the fourth linkage member 424 is hinged with the third mounting member 414, one end of the fifth linkage member 425 is hinged with the third linkage member 423, and the other end is hinged with the first mounting member 412.

[0046] When the backrest assembly 3 moves backward, the second mounting member 413 drives the seat cushion 1 on the assembling member 411 to move forward, so that the seat cushion 1 and the backrest assembly 3 are synchronously linked to move the whole chair center of gravity forward, to ensure the safety of large-angle leaning back, improve the user experience and safety, and specifically, Figure 7 As shown, when the seat is not in the leaning back state, the center of gravity is at the position of Z, and when the seat leans back, Figure 8 As shown, when the seat leans back, the center of gravity moves forward, because the center of gravity of the existing seat moves backward when it leans back, if the center of gravity moves backward, the user will fall off the seat when leaning back to a certain angle, so the application ensures that the user does not fall off the seat when leaning back to a large angle, and also because the center of gravity moves forward, a larger leaning back angle can be achieved, the seat cushion 1 and the backrest assembly 3 are synchronously linked, the linkage moves the whole chair center of gravity forward, to ensure the safety of large-angle leaning back, improve the user experience and safety.

[0047] As shown, Figures 9-10As shown, the backrest assembly comprises a back support 16 and a waist support 15, and the back support 16 is connected with the waist support 15 through a first connecting piece 17; the first connecting piece 17 comprises a first connecting end 36, a second connecting end 37, a third connecting end 38 and a fourth connecting end 39, the first connecting end 36 and the second connecting end 37 are respectively arranged on the two sides of the waist support 15 and connected with the waist support 15, the third connecting end 38 and the fourth connecting end 39 are respectively arranged on the two sides of the back support 16 and connected with the back support 16, specifically, a first micro-adjusting assembly 400 can be arranged between the first connecting end 36 of the first connecting piece 17 and the waist support 15 or between the second connecting end 37 of the first connecting piece 17 and the waist support 15, or the first micro-adjusting assembly 400 can be arranged between the first connecting end 36 of the first connecting piece 17 and the waist support 15 and between the second connecting end 37 of the first connecting piece 17 and the waist support 15 at the same time; by connecting the connecting ends on the first connecting piece 17 on the two sides of the back support 16 or on the two sides of the waist support 15 and arranging the first micro-adjusting assembly 400 at the connecting points, when the user's waist and back move, the waist support 15 or the back support 16 can slightly swing correspondingly to adapt to the position of the user's waist and back after adjusting the posture, so that the backrest assembly is more fitted to the user's waist and back, and the user's comfort is better.

[0048] The connecting points of the first connecting end 36 and the second connecting end 37 with the waist support 15 are located on the horizontal center line of the waist support 15; the connecting points of the third connecting end 38 and the fourth connecting end 39 with the back support 16 are located on the horizontal center line of the back support 16, so that the waist support 15 or the back support 16 can better swing slightly with the movement of the user's waist and back, thereby better fitting the user's waist and back, better user comfort and better support effect on the waist and back.

[0049] As shown in the drawings, Figure 12 and Figure 17As shown, the first micro-adjustment assembly 400 comprises a gear switch 40, an elastically movable moving part 42 cooperating with the gear switch 40, and a first fixing assembly; the gear switch 40 and the moving part 42 are arranged on the first connecting member 17 or the waist support member 15, that is, the gear switch 40 and the moving part 42 can be arranged on the first connecting member 17 simultaneously or on the waist support member 15 simultaneously, and the specific embodiment shown in the embodiment is arranged on the first connecting member 17; the first fixing assembly is connected with the moving part 42 to connect the first connecting member 17 and the waist support member 15, when the gear switch 40 and the moving part 42 are arranged on the first connecting member 17, the first fixing assembly is arranged on the waist support member 15, the gear switch 40 is adjusted to unlock or lock the moving part 42, and the waist support member 15 is squeezed or loosened to drive the moving part 42 to reciprocate in the horizontal direction. The first micro-adjustment assembly 400 can adjust the waist support member 15 to reciprocate in the direction of approaching or moving away from the user's waist, so as to adapt to the position of the user's waist and better support the user's waist. In addition, since the waist support member 15 and the back support member 16 are connected through the first connecting member 17, after the distance between the waist support member 15 and the user's waist is adjusted through the first micro-adjustment assembly 400, the back support member 16 can be driven to move in the same direction through the first connecting member 17, so that the back support member 16 is adaptively adjusted to the distance relative to the user's back, thereby realizing the synchronous movement of the waist support member 15 and the back support member 16, providing better support effect for the user's waist and back, and better comfort.

[0050] In the embodiment, specific embodiments of the connection mode of the first micro-adjustment assembly 400 are provided. The first embodiment: refer to Figures 12-15The mounting cylinder 43 is provided on the first connecting piece 17. In the embodiment, a through hole is formed in the mounting cylinder 43 and extends through both ends of the mounting cylinder 43 along the axial direction of the mounting cylinder 43. A baffle 44 is arranged in the through hole. The gear shift switch 40 is arranged in the mounting cylinder 43. Specifically, the gear shift switch 40 has a first connecting part, a second connecting part and a third connecting part which are sequentially connected. The first connecting part is connected with a decorative operation cover 45 arranged in the through hole after passing through the baffle 44. One end of the second connecting part is connected with the first connecting part, and the other end is connected with the third connecting part. A plurality of protruding plates 46 are arranged on the side wall of the second connecting part at intervals. A spring 47 is sleeved on the protruding plates 46, so as to reduce the contact area between the spring 47 and the gear shift switch 40, and avoid large friction between the gear shift switch 40 and the spring 47 when the gear shift switch 40 rotates. The third connecting part extends into the moving piece 42. A plurality of first limiting protrusions 48 are arranged on the third connecting part along the axial direction of the third connecting part at intervals. At least one second limiting protrusion 49 is arranged in the moving piece 42 along the axial direction of the moving piece 42 at intervals. Alternatively, at least one first limiting protrusion 48 is arranged on the third connecting part along the axial direction of the third connecting part at intervals, and a plurality of second limiting protrusions 49 are arranged in the moving piece 42 along the axial direction of the moving piece 42 at intervals. Alternatively, a plurality of first limiting protrusions 48 are arranged on the third connecting part along the axial direction of the third connecting part at intervals, and a plurality of second limiting protrusions 49 are arranged in the moving piece 42 along the axial direction of the moving piece 42 at intervals. All of the above can realize the limiting of the moving piece 42 and the gear shift switch 40. Specifically, when the gear shift switch 40 is rotated to the state that the first limiting protrusion 48 is disengaged from the second limiting protrusion 49, that is, the first limiting protrusion 48 and the second limiting protrusion 49 are axially dislocated and no longer engaged, the waist support 15 can be squeezed or relaxed, so as to compress or relax the spring 47. When the waist support 15 is adjusted to a suitable position, the gear shift switch 40 is continuously rotated, so that the first limiting protrusion 48 on the third connecting part is engaged with the second limiting protrusion 49 in the moving piece 42 again, so as to avoid the movement of the waist support 15 and keep the waist support 15 in the required position. Figures 13-15The part of the moving member 42 for pressing the first soft rubber 50 is located outside the mounting cylinder 43, and includes a disc-shaped pressing end 51, and a hollow first connecting column 52 is arranged in the pressing end 51, the first connecting column 52 is connected with the first fixing assembly after penetrating the first soft rubber 50, and the pressing end 51 is in contact with the first soft rubber 50; the first mounting slot 53 is arranged on the waist support 15, the first soft rubber 50 is arranged in the first mounting slot 53, and the moving member 42 is connected with the part of the first fixing assembly penetrating the first mounting slot 53 and penetrating the first soft rubber 50, specifically, the first fixing assembly includes the first connecting threaded member 54 and the first gasket 55, the first connecting threaded member 54 is screwed into the first connecting column 52 of the moving member 42 after penetrating the first gasket 55 and the first mounting slot 53, so as to connect the first connecting member 17 with the waist support 15; the spring 47 is arranged in the mounting cylinder 43 and sleeved on the gear switch 40, one end of the spring 47 is abutted against the end of the mounting cylinder 43, that is, the baffle 44 inside the mounting cylinder 43, and the other end is abutted against the end of the moving member 42; because the first soft rubber 50 is arranged between the first connecting member 17 and the waist support 15, when the user adjusts the posture and moves the waist and back while leaning on the seat, the waist support 15 can swing according to the continuously changing force applied by the user, so that the waist support 15 better fits the human waist and provides better support effect, and the user is more comfortable. The second embodiment is different from the first embodiment in that the positions of the mounting cylinder 43 and the first mounting slot 53 are interchanged, that is, the mounting cylinder 43 is arranged on the waist support 15, and the first mounting slot 53 is arranged on the first connecting member 17, and the rest of the structure is the same as the first embodiment, which will not be repeated here. Figures 17-18A mounting cylinder 43 is arranged on the first connecting piece 17. In this embodiment, a blind hole is arranged in the mounting cylinder 43 along the axial direction of the mounting cylinder 43, and a through hole 84 is arranged on the mounting cylinder 43, through which a handle 85 of the gear switch 41 passes, and a positioning engagement part 86 of the gear switch 41 is connected eccentrically in the through hole 84. Specifically, the gear switch 41 comprises the handle 85 and the positioning engagement part 86 connected with the handle 85, and engagement teeth are arranged on the positioning engagement part 86 of the gear switch 41. In addition, an eccentric shaft is arranged on the positioning engagement part 86 and is rotatably connected in the through hole 84. The moving piece 42 is at least partially located in the mounting cylinder 43. Specifically, the part of the moving piece 42 assembled with the gear switch 41 is located in the mounting cylinder 43, and the part for pressing the first soft rubber 50 is located outside the mounting cylinder 43. The part of the moving piece 42 for pressing the first soft rubber 50 comprises a disc-shaped pressing end 51, and a hollow first connecting column 52 is arranged in the pressing end 51. The first connecting column 52 penetrates the first soft rubber 50 and is connected with the first fixing assembly, and the pressing end 51 is in contact with the first soft rubber 50. A first installation slot 53 is arranged on the waist support 15, and the first soft rubber 50 is arranged in the first installation slot 53. The moving piece 42 passes through the first soft rubber 50 and is connected with the part of the first fixing assembly penetrating the first installation slot 53. Specifically, the first fixing assembly comprises a first connecting threaded part 54 and a first gasket 55. The first connecting threaded part 54 penetrates the first gasket 55 and the first installation slot 53 and is screwed into the first connecting column 52 of the moving piece 42, so as to connect the first connecting piece 17 with the waist support 15. A spring 47 is arranged in the mounting cylinder 43. One end of the spring 47 abuts against the end of the blind hole of the mounting cylinder 43, and the other end abuts against the end of the moving piece 42. The part of the moving piece 42 located in the mounting cylinder 43 has an arc-shaped cross section and a three-dimensional shape formed by a plane and an arc-shaped surface. A tooth surface 87 is arranged on the plane along the axial direction and engages with the engagement teeth on the gear switch 41. By rotating the gear switch 41, the engagement teeth on the positioning engagement part 86 engage with or disengage from the tooth surface 87 on the moving piece 42 under eccentric movement, so as to lock or unlock the moving piece and keep it at a required position, thereby fixing the position of the waist support 15. Since the first soft rubber 50 is arranged between the first connecting piece 17 and the waist support 15, when the user adjusts the posture and moves the waist and back while leaning on the seat, the waist support 15 can swing correspondingly under the continuously changing force applied by the user, so as to better fit the human waist and provide better support effect, and the user can use more comfortably.The third embodiment has simpler structure, is more convenient to operate and has stronger practicability.

[0051] As shown in Figures 10-11 The second micro-motion adjusting assembly is arranged between the third connecting end 38 of the first connecting member 17 and the back supporting member 16 and between the fourth connecting end 39 of the first connecting member 17 and the back supporting member 16. The structure of the second micro-motion adjusting assembly used in at least one of the two positions is as follows: the second micro-motion adjusting assembly comprises a second soft rubber 56 and a second fixing assembly. The second soft rubber 56 is arranged between the first connecting member 17 and the back supporting member 16. Specifically, the second soft rubber 56 is arranged between the third connecting end 38 of the first connecting member 17 and the back supporting member 16 and between the fourth connecting end 39 of the first connecting member 17 and the back supporting member 16. The first connecting member 17 is connected to the part of the second fixing assembly penetrating the back supporting member 16 after passing through the second soft rubber 56. That is, the second connecting column 57 is arranged at the third connecting end 38 and the fourth connecting end 39 of the first connecting member 17 respectively. The second fixing assembly comprises a second connecting threaded member 58 and a second gasket. The second connecting threaded member 58 of the second fixing assembly penetrates the second gasket and the back supporting member 16 and is screwed into the second connecting column 57 to connect the first connecting member 17 and the back supporting member 16 and clamp the second soft rubber 56 between the first connecting member 17 and the back supporting member 16. Alternatively, the second connecting column 57 can be arranged on the back supporting member 16, and the second connecting threaded member 58 of the second fixing assembly penetrates the second gasket and the first connecting member 17 and is screwed into the corresponding second connecting column 57 on the back supporting member 16. The second soft rubber 56 can make the back supporting member 16 swing with the changing force applied by the user when the user adjusts the posture and moves the waist and back while sitting on the seat, so that the back supporting member 16 better fits the human back and provides better support effect and more comfortable use. Through the cooperation of the first micro-motion adjusting assembly 400, the second micro-motion adjusting assembly and the first connecting member 17, the whole backrest assembly can swing with the movement of the waist and back of the user to better fit the waist and back of the user and provide better support effect and better comfort.

[0052] As shown in Figure 11 、 Figure 12 and Figure 16As shown, the seat further comprises a headrest assembly 59 located above the backrest assembly, the headrest assembly 59 is connected with a third connecting member 60, the third connecting member 60 is rotatably connected with the second connecting member 18, the second connecting member 18 is connected to the base 2, and the second connecting member 18 is further connected with the first connecting member 17; the third connecting member 60 comprises a fifth connecting end 61, a sixth connecting end 62 and a seventh connecting end 63, the fifth connecting end 61 is rotatably connected with the second connecting member 18, the sixth connecting end 62 and the seventh connecting end 63 are separately arranged on the two sides of the headrest assembly 59 and connected therewith; the connecting points of the sixth connecting end 62 and the seventh connecting end 63 with the headrest assembly 59 are located on the horizontal center line of the headrest assembly 59. The sixth connecting end 62 and the seventh connecting end 63 of the third connecting member 60 are connected on the two sides of the headrest assembly 59, and the connecting points are located on the horizontal center line of the headrest assembly 59, so that the headrest assembly 59 can better swing with the movement of the head and neck of the user, so as to better fit the back of the head and neck of the user, the comfort of use is better, and the support effect on the head and neck is better.

[0053] A third micro-adjustment assembly is arranged between the sixth connecting end 62 of the third connecting member 60 and the headrest assembly 59 and between the seventh connecting end 63 of the third connecting member 60 and the headrest assembly 59; the structure of the third micro-adjustment assembly used at least one of between the sixth connecting end 62 of the third connecting member 60 and the headrest assembly 59 and between the seventh connecting end 63 of the third connecting member 60 and the headrest assembly 59 is as follows: the third micro-adjustment assembly comprises a third soft rubber 64 and a third fixing assembly, the third soft rubber 64 is arranged between the third connecting member 60 and the headrest assembly 59, and the third connecting member 60 is connected to the part of the third fixing assembly penetrating through the headrest assembly 59 after penetrating through the third soft rubber 64; the third connecting member 60 is connected to the headrest assembly 59 and the third soft rubber 64 is clamped between the third connecting member 60 and the headrest assembly 59 through the third fixing assembly; specifically, the third soft rubber 64 is arranged between the sixth connecting end 62 of the third connecting member 60 and the headrest assembly 59 and between the seventh connecting end 63 of the third connecting member 60 and the headrest assembly 59, and the third connecting member 60 is connected to the part of the third fixing assembly penetrating through the headrest assembly 59 after penetrating through the third soft rubber 64, that is, the third connecting column is arranged on the sixth connecting end 62 and the seventh connecting end 63 of the third connecting member 60 respectively, the third fixing assembly comprises a third connecting screw and a third gasket, and the third connecting screw of the third fixing assembly is screwed into the third connecting column after penetrating through the third gasket and the headrest assembly 59, so as to connect the third connecting member 60 to the headrest assembly 59 and clamp the third soft rubber 64 between the third connecting member 60 and the headrest assembly 59; or the third connecting column can be arranged on the headrest assembly 59, and the third connecting screw of the third fixing assembly is screwed into the corresponding third connecting column on the headrest assembly 59 after penetrating through the third gasket and the third connecting member 60. By arranging the third soft rubber 64, when the user adjusts the posture and moves the head and neck while leaning on the seat, the headrest assembly 59 can produce corresponding swinging under the constantly changing force applied by the user when the head and neck move, so that the headrest assembly 59 better fits the back side of the head and neck and provides better support effect and more comfortable use. Through the cooperation of the first micro-adjustment assembly 400, the second micro-adjustment assembly, the third micro-adjustment assembly, the first connecting member 17, the second connecting member 18 and the third connecting member 60, the whole backrest assembly and the headrest assembly 59 can produce corresponding micro-movement to follow the waist and back movement and the head and neck movement of the user, so as to always fit the waist and back and the head and neck of the user and provide better support effect and better comfort.

[0054] The technical effects of the utility model mainly embody in the following aspects:

[0055] The seat cushion and the backrest can be synchronously linked to move the whole chair forward, so as to ensure the safety of large-angle reclining, improve the user experience and safety.

[0056] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A seat, characterized by The utility model relates to a chair, which comprises a backrest assembly (3), a housing (2), a seat cushion (1) and a linkage structure (4), the linkage structure (4) is connected with the backrest assembly (3) and the housing (2) respectively, the seat cushion (1) is arranged on the linkage structure (4), and the linkage structure (4) can be stretched or contracted under the action of external force to control the synchronous movement of the backrest assembly (3) and the seat cushion (1). The linkage structure (4) comprises a mounting assembly (410) and a linkage assembly (420) connected with the mounting assembly (410), the seat cushion (1) is arranged on the mounting assembly (410), and the mounting assembly (410) is connected with the housing (2). When the linkage assembly (420) is stretched, the backrest assembly (3) leans back, and the mounting assembly (410) drives the seat cushion (1) to move away from the backrest assembly (3). When the linkage assembly (420) is contracted, the backrest assembly (3) leans forward, and the mounting assembly (410) drives the seat cushion (1) to move close to the backrest assembly (3). The utility model further comprises a driving member (5) for driving the linkage structure (4) to stretch or contract, the driving member (5) is arranged in the housing (2), and the driving member (5) directly or indirectly drives the linkage structure (4).

2. The seat of claim 1, wherein: The driving member (5) is an electric push rod.

3. The seat of claim 2, wherein: The mounting assembly (410) comprises an assembling piece (411), a first mounting member (412), a second mounting member (413) and a third mounting member (414), one end of the first mounting member (412) and the second mounting member (413) is respectively hinged with the assembling piece (411), and the other end of the first mounting member (412) and the second mounting member (413) is respectively hinged with the housing (2).

4. The seat of claim 1, wherein: The linkage assembly (420) comprises a first linkage member (421), a second linkage member (422), a third linkage member (423), a fourth linkage member (424) and a fifth linkage member (425), the first linkage member (421) is hinged with the assembling piece (411) and fixedly connected with the backrest assembly (3), one end of the second linkage member (422) is hinged with the first linkage member (421), and the other end is hinged with the third linkage member (423), one end of the third linkage member (423) is hinged with the fifth linkage member (425), and the other end is hinged with the fourth linkage member (424), the fourth linkage member (424) is hinged with the third mounting member (414), one end of the fifth linkage member (425) is hinged with the third linkage member (423), and the other end is hinged with the first mounting member (412). The utility model further comprises a control structure (7) matched with the driving member (5) for controlling the driving member (5) to drive the linkage structure (4) to stretch and contract.

5. The seat of claim 2, wherein: ​ 6. The seat of claim 1, wherein: The backrest assembly (3) comprises a back support (16), a waist support (15), a first connecting member (17) and a second connecting member (18), the back support (16) and the waist support (15) are connected by the first connecting member (17); the first connecting member (17) comprises a first connecting end (36), a second connecting end (37), a third connecting end (38) and a fourth connecting end (39), the first connecting end (36) and the second connecting end (37) are arranged on the two sides of the waist support (15) and connected thereto, and the third connecting end (38) and the fourth connecting end (39) are arranged on the two sides of the back support (16) and connected thereto.

7. The seat of claim 6, wherein: A first micro-adjustment assembly (400) is arranged between the first connecting end (36) and the waist support (15) and / or between the second connecting end (37) and the waist support (15).

8. The seat of claim 6, wherein: A second micro-adjustment assembly is arranged between the third connecting end (38) and the back support (16) and / or between the fourth connecting end (39) and the back support (16).

9. The seat of claim 6, wherein: A headrest assembly (59) is further included, which is located above the backrest assembly (3), and the headrest assembly (59) is connected with a third connecting member (60), the third connecting member (60) comprises a fifth connecting end (61), a sixth connecting end (62) and a seventh connecting end (63), and a third micro-adjustment assembly is arranged between the sixth connecting end (62) and the headrest assembly (59) and / or between the seventh connecting end (63) and the headrest assembly (59).

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