CN219661278U - Seat support and seat - Google Patents

Abstract

The utility model discloses a seat support and a seat. The chair comprises a base, a support frame and an armrest frame, wherein a chair seat connecting frame is arranged on the base in a sliding manner along the up-down direction, a mounting rod is rotationally arranged on the base, the mounting rod is arranged along the left-right direction, a connecting block is fixedly arranged on the mounting rod, the chair seat connecting frame is rotationally and slidingly connected with the connecting block, the support frame comprises a support rod, the lower end of the support rod is hinged with the base, the armrest frame comprises two armrest components which are symmetrically arranged on two sides of the support rod, the armrest component comprises an armrest rod and a connecting rod, a leaning mounting seat is arranged on the armrest rod, the rear end of the armrest rod is hinged with the upper end of the support rod, the front end of the armrest rod is hinged with the armrest rod at the upper end of the connecting rod, the lower end of the connecting rod is fixedly connected with the mounting rod, and the base, the support rod, the armrest rod and the connecting rod form a four-bar mechanism; when the four-bar mechanism acts, the connecting block swings to drive the seat connecting frame to lift along the base. The utility model has simple structure, is convenient for assembly and can enable the backrest to vertically follow the human body.

Description

Seat support and seat

Technical Field

The utility model relates to the field of seats, in particular to a seat support and a seat.

Background

The seat is a common article in life and is widely applied to various occasions. In the prior art, people not only pursue comfort of chairs, but also pay attention to the influence of the chairs on human health. Especially children, since many bones on the body are not developed and mature during growth, the wrong sitting posture can lead to bone deformation, so that the problems of humpback, incapacitation of two shoulders, spine bending and the like are caused, and the injuries are irreversible. In the prior art, most of seats are produced in batches by adopting standardized ergonomic data due to the production cost, and the backrest of the seat is fixed, so that the backrest of the seat sometimes has the condition of not being supported in place and can not help a user to keep a correct sitting posture due to the difference of human body types; part of seats can correct the sitting postures of children, but the seats are complex in structure, high in production cost and not suitable for large-scale popularization.

Chinese patent publication No. CN215304359U, publication No. 2021-12-28, entitled self-adaptive seat depth adjusting seat, the disclosed seat, the seat is movably connected with the fixed support by the first link assembly, so that the seat can be raised or lowered relative to the fixed support; the chair back is movably connected with the fixed supporting piece through the second connecting rod assembly, so that the chair back can translate back and forth in the depth direction of the chair seat.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide the seat support, which adopts a single four-bar mechanism, has a simple structure and is convenient to assemble; and the backrest can move forward/backward in parallel when the seat is used, so that the back of a user can be followed, namely, the backrest cannot rotate when the back of the user is followed, and the seat is convenient for helping the user to keep a correct sitting posture.

The technical scheme of the utility model is realized as follows:

a seat support comprising:

the seat connecting frame is arranged on the base and is arranged on the base in a sliding mode along the up-down direction, a mounting rod is arranged on the base in a rotating mode, the mounting rod is arranged along the left-right direction, a connecting block is fixedly arranged on the mounting rod, and the seat connecting frame is in rotating and sliding connection with the connecting block;

the support frame comprises a support rod, and the lower end of the support rod is hinged with the base;

the handrail frame comprises two handrail components which are symmetrically arranged at two sides of the supporting rod, the handrail components comprise a handrail rod and a connecting rod, a back mounting seat is arranged on the handrail rod, the rear end of the handrail rod is hinged with the upper end of the supporting rod, the front end of the handrail rod is hinged with the handrail rod at the upper end of the connecting rod, the lower end of the connecting rod is fixedly connected with the mounting rod, and the base, the supporting rod, the handrail rod and the connecting rod form a four-bar mechanism; when the four-bar mechanism acts, the connecting block swings to drive the seat connecting frame to lift along the base.

In the scheme, a base, a mounting rod, a supporting rod and a connecting rod form a four-bar mechanism, when the four-bar mechanism acts, a connecting block swings to drive a seat connecting frame to lift along the base, wherein the base is equivalent to a rack of the four-bar mechanism, the supporting rod and the connecting rod are equivalent to two side links of the four-bar mechanism, the supporting rod is equivalent to the connecting rod, when the supporting rod and the connecting rod rotate forwards, the supporting rod is driven to move forwards, the supporting rod drives a backrest mounting seat to translate forwards, and meanwhile, the mounting rod drives a connecting block to rotate forwards, and at the moment, the connecting block drives the seat connecting frame to move forwards and pulls the seat connecting frame to move downwards; when the support rod and the connecting rod rotate backwards, the support rod is driven to move backwards, and the support rod drives the backrest mounting seat to translate backwards; meanwhile, the mounting rod on the base is driven to rotate backwards, and at the moment, the connecting block drives the seat connecting frame to move backwards and pushes the seat connecting frame to move upwards.

Preferably, a first sliding groove is formed in the front end of the seat connecting frame, the first sliding groove is formed in the front-rear direction, a first pin shaft matched with the first sliding groove is arranged on the connecting block, and the first pin shaft is slidably arranged in the first sliding groove. When the four-bar mechanism acts, the connecting block swings to drive the first pin shaft to slide back and forth along the first sliding groove, and the first sliding groove is arranged to enable the seat connecting frame to have a larger lifting space, so that the swing range of the connecting block is limited.

Preferably, the seat connecting frame comprises a top plate and two side plates arranged on the top plate in bilateral symmetry, wherein two side plates and the top plate enclose to form a containing space, a part of the base is positioned in the containing space, second pin shafts are respectively arranged on the left side wall and the right side wall of the base, second sliding grooves matched with the second pin shafts are respectively arranged on the two side plates, the second pin shafts slide in the corresponding second sliding grooves, and the second sliding grooves are obliquely arranged forwards from top to bottom. When the four-bar mechanism acts, the connecting block drives the seat connecting frame to lift, and at the moment, the second pin shaft slides up and down along the second sliding groove.

Preferably, the support rod comprises a fixed rod body and a movable rod body, the fixed rod body is obliquely arranged from bottom to top to back, the lower end of the fixed rod body is fixedly connected with the base, the lower end of the movable rod body is hinged to the upper end of the fixed rod body, and the two support rods are respectively hinged to two sides of the movable rod body. Through setting up the fixed body of rod from down upwards towards the slope setting, realize letting bigger rotation space for the movable rod.

Preferably, the movable rod body is arranged in parallel with the connecting rod, the movable rod body is provided with a first hinge point hinged with the handrail, the movable rod body is provided with a second hinge point hinged with the fixed rod body, the connecting rod is provided with a third hinge point hinged with the handrail, the connecting rod is provided with a connecting point connected with the mounting rod, and the distance between the first hinge point and the second hinge point is consistent with the distance between the third hinge point and the connecting point.

Preferably, the support rod comprises a bent rod body and a horizontal rod body connected with the bent rod body, the support rod is hinged with the bent rod body, the upper end of the connection rod is rotationally connected with the horizontal rod body, the lower end of the connection rod is fixedly connected with the installation rod, and the back support installation seat is arranged on the front side of the bent rod body. When the arm rest is actually operated, the arm rest plays a role in supporting the arm, wherein the bent rod body corresponds to the large arm of the arm, and the horizontal rod body corresponds to the small arm of the arm, so that the arm rest is more in accordance with ergonomics. Because the curved bar body is closer to the back of the human body and has sufficient installation space, in this embodiment, the backrest installation seat is disposed at the front side of the curved bar body. The backrest is vertically arranged on the bent rod body.

Preferably, the length of the second chute is identical to the longitudinal height of the first chute. During actual operation, the connecting block can rotate forward to first extreme position, backward rotates to second extreme position, when the connecting block is in first extreme position, first round pin axle supports the front end at first spout, the second round pin axle supports the uppermost end at the second spout, when the connecting block is in second extreme position, ensure that first round pin axle supports the rearmost end at first spout, the second round pin axle supports the lowermost end at the second spout, through setting up the length of second spout and the longitudinal height of first spout unanimity, make the connecting block be in first extreme position or second extreme position, first round pin axle, second round pin axle can block respectively at the tip of first spout, the tip of second spout simultaneously, form the multiple spot support, ensure the stability of seat support.

Preferably, the base is provided with a positioning assembly, the positioning assembly comprises a gas stay rod, the gas stay rod comprises a cylinder barrel and a telescopic rod which is partially positioned in the cylinder barrel, the cylinder barrel is hinged with the support rod, and one end of the telescopic rod positioned outside the cylinder barrel is hinged with the seat connecting frame. Through setting up locating component, realize fixing rail and seat support link in optional position.

A seat comprising a seat support as described above, the seat comprising a back and a seat pan, the back of the back being connected to a back mount, the bottom of the seat pan being connected to a seat mount. In the scheme, the backrest is vertically arranged on the backrest mounting seat, and when the four-bar mechanism acts, the supporting rod drives the backrest to translate back and forth, so that the supporting angle of the backrest is ensured to be unchanged. When in actual use, a user sits on the seat board, and when the sitting posture is changed, the seat board is driven to descend/ascend by the weight of the user, and the backrest is attached to the back of the user at any time. In addition, when users of different sizes use the seat, the backrest can also follow the back of the user despite different sitting depths and sitting postures of each person, so that the application range is wide.

The principle and beneficial effects of the utility model adopting the technical scheme are as follows:

the four-bar mechanism is composed of a base, a mounting bar, a supporting bar and a connecting bar, when the four-bar mechanism acts, a connecting block on the mounting bar rotates forwards/backwards, a backrest mounting seat on the supporting bar translates forwards/backwards along with the supporting bar, and when the connecting block rotates forwards, a seat connecting frame is driven to descend and move forwards; when the connecting block rotates backwards, the seat connecting frame is driven to lift and move backwards; the backrest mounting seat translates forward/backward along with the armrest rod, and the backrest mounted on the backrest mounting seat translates forward/backward along with the armrest rod, so that the backrest can be kept at a correct supporting angle for a human body.

Drawings

FIG. 1 is a schematic view of a seat with a seat support;

FIG. 2 is an exploded view of a seat with a seat support;

FIG. 3 is a schematic view of a seat support;

FIG. 4 is a schematic view of another angle of the seat support;

FIG. 5 is a schematic view of a support frame, and armrest frame;

FIG. 6 is a schematic view of a base;

FIG. 7 is a schematic view of a seat attachment base;

FIG. 8 is a schematic view of a connection block;

fig. 9 is a schematic view of a seat state change.

The reference numerals in the drawings are as follows:

1. a seat support; 2. a base; 3. a seat connecting frame; 4. a mounting rod; 5. a connecting block; 6. a support frame; 7. a support rod; 8. a handrail frame; 9. a handrail assembly; 10. a support rod; 11. a connecting rod; 12. a backrest mounting base; 13. a first chute; 14. a first pin; 15. a side plate; 16. an accommodating space; 17. a second pin; 18. a second chute; 19. fixing the rod body; 20. a movable rod body; 22. bending the rod body; 23. a horizontal rod body; 24. a cylinder; 25. a telescopic rod; 26. a backrest; 27. a seat plate; 28. a first hinge point; 29. a second hinge point; 30. a third hinge point; 31. the connection point.

Description of the embodiments

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

The specific embodiments of the present utility model are as follows:

as shown in fig. 1-9, the present utility model provides a seat support comprising:

the seat comprises a base 2, wherein a seat connecting frame 3 is arranged on the base 2, the seat connecting frame 3 is arranged on the base 2 in a sliding manner along the up-down direction, a mounting rod 4 is rotatably arranged on the base 2, the mounting rod 4 is arranged along the left-right direction, a connecting block 5 is fixedly arranged on the mounting rod 4, and the seat connecting frame 3 is rotatably and slidably connected with the connecting block 5;

the support frame 6, the support frame 6 includes the support bar 7, the underpart of the support bar 7 articulates with base 2;

the handrail frame 8 comprises two handrail components 9 which are symmetrically arranged at two sides of the supporting rod 7, the handrail components 9 comprise a handrail rod 10 and a connecting rod 11, a backrest mounting seat 12 is arranged on the handrail rod 10, the rear end of the handrail rod 10 is hinged with the upper end of the supporting rod 7, the front end of the handrail rod 10 is hinged with the handrail rod 10 at the upper end of the connecting rod 11, the lower end of the connecting rod 11 is fixedly connected with the mounting rod 4, and the base 2, the supporting rod 7, the handrail rod 10 and the connecting rod 11 form a four-bar mechanism; when the four-bar mechanism acts, the connecting block 5 swings to drive the seat connecting frame 3 to lift along the base 2.

In the scheme, a base 2, a mounting rod 4, a supporting rod 7, a handrail 10 and a connecting rod 11 form a four-bar mechanism, when the four-bar mechanism acts, a connecting block 5 swings to drive a seat connecting frame 3 to lift along the base 2, wherein the base 2 is equivalent to a rack of the four-bar mechanism, the supporting rod 7 and the connecting rod 11 are equivalent to two side links of the four-bar mechanism, the handrail 10 is equivalent to a connecting rod, when the supporting rod 7 and the connecting rod 11 rotate forwards, the handrail 10 is driven to move forwards, the handrail 10 drives a backrest mounting seat 12 to translate forwards, meanwhile, the mounting rod 4 on the base 2 is driven to rotate forwards, the mounting rod 4 drives a connecting block 5 to rotate forwards, and at the moment, the connecting block 5 drives the seat connecting frame 3 to move forwards and pulls the seat connecting frame 3 to move downwards; when the support rod 7 and the connecting rod 11 rotate backwards, the support rod 10 is driven to move backwards, and the support rod 10 drives the back support mounting seat 12 to translate backwards; meanwhile, the mounting rod 4 on the base 2 is driven to rotate backwards, and at the moment, the connecting block 5 drives the seat connecting frame 3 to move backwards and pushes the seat connecting frame 3 to move upwards. It can be understood that the connecting block 5 on the mounting rod 4 rotates with the seat connecting frame 3 and is in sliding connection, the seat connecting frame 3 is arranged on the base 2 in a sliding manner along the up-down direction, and the seat support 1 can realize the linkage of the seat connecting frame 3 and the backrest mounting seat 12 only by a single four-bar mechanism, and meanwhile, the structure of the seat support 1 is ensured to be simple.

As shown in fig. 3 and 7, the front end of the seat connecting frame 3 is provided with a first chute 13, the first chute 13 is arranged along the front-back direction, the connecting block 5 is provided with a first pin 14 matched with the first chute 13, the first pin 14 is slidably arranged in the first chute 13, the seat connecting frame 3 comprises a top plate and two side plates 15 arranged on the top plate in a bilateral symmetry manner, the two side plates 15 and the top plate enclose to form a containing space 16, a part of the base 2 is positioned in the containing space 16, the left side wall and the right side wall of the base 2 are respectively provided with a second pin 17, the two side plates 15 are respectively provided with a second chute 18 matched with the second pin 17, the second pin 17 is slidably arranged in the corresponding second chute 18, the second chute 18 is obliquely arranged forwards from top to bottom, and the length of the second chute 18 is consistent with the longitudinal height of the first chute 13. By providing the first and second sliding grooves 13, 18, the seat connecting frame 3 has a larger lifting space, the backrest mounting seat 12 has a larger translation space, and the swing range of the connecting block 5 is limited. In this embodiment, when the four-bar linkage mechanism acts, the connection block 5 rotates forward/backward along with the installation rod 4, at this time, the first pin 14 on the connection block 5 slides reciprocally along the first chute 13, the second pin 17 slides reciprocally along the second chute 18, specifically, when the first pin 14 moves forward along the first chute 13, the second pin 17 descends along the second chute 18; when the first pin 14 moves backward along the first chute 13, the second pin 17 rises along the second chute 18. It can be appreciated that the connection block 5 can rotate forward to a first limit position and backward to a second limit position, when the connection block 5 is at the first limit position, the first pin 14 abuts against the foremost end of the first chute 13, and the second pin 17 abuts against the foremost end of the second chute 18; when the connecting block 5 is in the second limit position, the first pin shaft 14 is guaranteed to be propped against the rearmost end of the first sliding groove 13, the second pin shaft 17 is guaranteed to be propped against the bottommost end of the second sliding groove 18, and the length of the second sliding groove 18 is consistent with the longitudinal height of the first sliding groove 13, so that when the connecting block 5 is in the first limit position or the second limit position, the first pin shaft 14 and the second pin shaft 17 can be clamped at the end part of the first sliding groove 13 and the end part of the second sliding groove 18 simultaneously, so that multi-point support is formed, and the stability of the seat support 1 is guaranteed. In addition, part of the seat connecting frame 3 is buckled on the base 2, so that the installation space is saved, and the compact structure of the seat bracket 1 is ensured. As shown in fig. 9, when the seat state is changed, the connection block 5 is switched from the second limit state to the first limit state, the first pin 14 moves from the rear end to the front end of the first chute 13 and abuts against the front end of one chute 13, and the second pin 17 moves from the lower end to the upper end of the second chute 18 and abuts against the upper end of the second chute 18.

As shown in fig. 2, the supporting rod 7 comprises a fixed rod body 19 and a movable rod body 20, the fixed rod body 19 is obliquely arranged from bottom to top to back, the lower end of the fixed rod body 19 is fixedly connected with the base 2, the lower end of the movable rod body 20 is hinged to the upper end of the fixed rod body 19, and the two supporting rods 10 are respectively hinged to two sides of the movable rod body 20. By arranging the fixed rod body 19 to incline from bottom to top to back, a larger rotating space is realized for the movable rod, and a space is also reserved for the installation of the seat plate 27.

As shown in fig. 3, the movable rod 20 is arranged in parallel with the connecting rod 11, the movable rod 20 is provided with a first hinging point 28 hinged with the handrail 10, the movable rod 20 is provided with a second hinging point 29 hinged with the fixed rod 19, the connecting rod 11 is provided with a third hinging point 30 hinged with the handrail 10, the connecting rod 11 is provided with a connecting point 31 connected with the mounting rod 4, the distance between the first hinging point 28 and the second hinging point 29 is consistent with the distance between the third hinging point 30 and the connecting point 31, so that the angle of the movable rod 20 and the connecting rod is consistent when the movable rod rotates, and the handrail 10 can drive the back mounting seat 12 to horizontally move forwards/backwards.

As shown in fig. 3 to 5, the support rod 10 includes a curved rod 22, a horizontal rod 23 connected to the curved rod 22, the support rod 7 is hinged to the curved rod 22, the upper end of the connecting rod 11 is rotatably connected to the horizontal rod 23, the lower end of the connecting rod 11 is fixedly connected to the mounting rod 4, the backrest mounting seat 12 is disposed on the front side of the curved rod 22, and the support rod 10 is not only equivalent to a connecting rod of a four-bar mechanism, but also serves the purpose of connecting the backrest 26 and placing an arm of a user. Specifically, when the four-bar mechanism acts, the whole armrest 10 reciprocates horizontally, the backrest 26 is arranged on the armrest 10 to realize the forward and backward translation of the backrest 26, in the embodiment, the bent rod body 22 is positioned above the horizontal rod body 23, and the backrest mounting seat 12 is arranged on the bent rod body 22, so that enough mounting space can be provided for the backrest 26; when a user places an arm on the armrest 10, the bending rod body 22 corresponds to a large arm of the arm, the horizontal rod body 23 corresponds to a small arm of the arm, when the arm is actually placed, the large arm is positioned on the top surface of the bending rod body 22, the small arm is positioned on the top surface of the horizontal rod body 23, the laminating degree of the armrest 10 and the arm is higher, the armrest 10 is ensured to conform to the ergonomics, and the comfort level of the user for placing the arm is improved.

As shown in fig. 2, a positioning component is arranged on the base and comprises a gas stay rod, the gas stay rod comprises a cylinder 24 and a telescopic rod 25 which is partially positioned in the cylinder 24, the cylinder 24 is hinged with the supporting rod, and one end of the telescopic rod 25 positioned outside the cylinder 24 is hinged with the seat connecting frame 4. By arranging the positioning component, the armrest 10 and the seat connecting frame 3 are fixed at any positions. Specifically, the forward movement distance of the backrest 26 is proportional to the length of the telescopic rod 25 extending out of the cylinder 24, the telescopic rod 25 has a locking state and an active state, when the user needs the backrest 26 to follow the back, the telescopic rod 25 is in the active state, and the telescopic rod 25 stretches along with the movement of the seat connecting frame; when the user needs to lock the backrest 26 and the seat plate 27 to a certain fixed position, the telescopic rod 25 is locked by the control switch of the gas stay, so that the armrest 10 and the seat connecting frame 3 are fixed to the fixed position, and the telescopic rod 25 is in a locked state.

As shown in fig. 1 and 2, a seat includes a seat bracket 1, a back rest 26 and a seat plate 27, the back of the back rest 26 is connected to a back rest mounting seat 12, and the bottom surface of the seat plate 27 is connected to a seat support connecting frame 3. In the scheme, the backrest 26 is arranged on the backrest mounting seat 12, the seat board 27 is arranged on the seat connecting frame 3, in actual practice, a user sits on the seat board 27, and when sitting postures are changed, the seat board 27 is driven to descend/ascend by self weight, the backrest 26 moves forwards/backwards horizontally to follow the back, so that the backrest 26 can be attached to the back of the user at any time. In addition, when users of different sizes use the seat, the backrest 26 can follow the back of the user even though the sitting depth of each person is different, so that the application range is wide. It should be noted that the correct sitting posture is to straighten the back so that the back is substantially perpendicular to the legs. In this embodiment, the back 26 is attached to the back mount 12 substantially vertically and the seat plate 27 is attached to the seat attachment frame 3 substantially horizontally to assist the user in maintaining a correct sitting position.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (9)

1. A seat support, comprising:

the seat connecting frame is arranged on the base and is arranged on the base in a sliding mode along the up-down direction, a mounting rod is arranged on the base in a rotating mode, the mounting rod is arranged along the left-right direction, a connecting block is fixedly arranged on the mounting rod, and the seat connecting frame is in rotating and sliding connection with the connecting block;

the support frame comprises a support rod, and the lower end of the support rod is hinged with the base;

the handrail frame comprises two handrail components which are symmetrically arranged at two sides of the supporting rod in a left-right mode, the handrail components comprise a handrail rod and a connecting rod, a back mounting seat is arranged on the handrail rod, the rear end of the handrail rod is hinged with the upper end of the supporting rod, the front end of the handrail rod is hinged with the handrail rod at the upper end of the connecting rod, the lower end of the connecting rod is fixedly connected with the mounting rod, and the base, the supporting rod, the handrail rod and the connecting rod form a four-bar mechanism; when the four-bar mechanism acts, the connecting block swings to drive the seat connecting frame to lift along the base.

2. The seat support according to claim 1, wherein a first sliding groove is formed in the front end of the seat connecting frame, the first sliding groove is formed in the front-rear direction, a first pin shaft matched with the first sliding groove is arranged on the connecting block, and the first pin shaft is slidably arranged in the first sliding groove.

3. The seat support according to claim 2, wherein the seat connecting frame comprises a top plate and two side plates which are symmetrically arranged on the top plate in a left-right mode, the two side plates and the top plate are enclosed to form a containing space, a part of the base is located in the containing space, second pin shafts are respectively arranged on the left side wall and the right side wall of the base, second sliding grooves matched with the second pin shafts are respectively arranged on the two side plates, the second pin shafts slide in the corresponding second sliding grooves, and the second sliding grooves are obliquely arranged forwards from top to bottom.

4. The seat support according to claim 1, wherein the support rod comprises a fixed rod body and a movable rod body, the fixed rod body is obliquely arranged from bottom to top to rear, the lower end of the fixed rod body is fixedly connected with the base, the lower end of the movable rod body is hinged to the upper end of the fixed rod body, and the two support rods are respectively hinged to two sides of the movable rod body.

5. A seat support as claimed in claim 4, wherein the movable rod is arranged in parallel with the connecting rod, the movable rod has a first hinge point hinged with the armrest, the movable rod has a second hinge point hinged with the fixed rod, the connecting rod has a third hinge point hinged with the armrest, the connecting rod has a connecting point connected with the mounting rod, and the intervals between the first hinge point and the second hinge point are consistent with the intervals between the third hinge point and the connecting point.

6. A seat support according to claim 1, 2 or 3, wherein the support rod comprises a curved rod body and a horizontal rod body connected with the curved rod body, the support rod is hinged with the curved rod body, the upper end of the connecting rod is rotatably connected with the horizontal rod body, the lower end of the connecting rod is fixedly connected with the mounting rod, and the back support mounting seat is arranged on the front side of the curved rod body.

7. A seat support as claimed in claim 3, wherein the length of the second runner is consistent with the longitudinal height of the first runner.

8. A seat support as claimed in claim 1, 2 or 3, wherein the base is provided with a positioning assembly, the positioning assembly comprises a gas strut, the gas strut comprises a cylinder and a telescopic rod partially positioned in the cylinder, the cylinder is hinged with the support rod, and one end of the telescopic rod positioned outside the cylinder is hinged with the seat connecting frame.

9. A seat comprising a seat support as claimed in any one of claims 1 to 8, the seat comprising a back and a seat pan, the back of the back being connected to a back mount and the bottom of the seat pan being connected to a seat frame.