CN113208337B

CN113208337B - Connection base of swivel chair

Info

Publication number: CN113208337B
Application number: CN202110444026.5A
Authority: CN
Inventors: 邓丹; 欧阳钟明
Original assignee: Beijing Youjin Furniture Co ltd
Current assignee: Beijing Youjin Furniture Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2023-07-04
Anticipated expiration: 2041-04-23
Also published as: CN113208337A

Abstract

The utility model relates to a connection base of swivel chair in seat field, it is including being used for the base box of pegging graft each other with support the gas pole, the upper surface fixed of base box has a spacing axle, the top of base box still is provided with one and seat support interconnect's braced bottom plate, braced bottom plate uses spacing axle to rotate with the base box and is connected, still be provided with an elasticity return piece that is used for driving the seat support and rotate the return between braced bottom plate and the base box, the one end and the base box screens of elasticity return piece are fixed, the other end and the braced bottom plate screens of elasticity return piece are fixed. According to the chair, the risk of collision between the backrest and the edge of the tabletop is reduced, people can lean on the two side areas of the waist on the backrest through rotation of the chair, fatigue of the side areas of the waist is relieved, and the lower body area can be independently moved through rotation of the chair without affecting normal work of the people; due to the arrangement of the elastic return piece, the seat is convenient for the automatic return after rotating, and the integration of the swivel chair is also increased.

Description

Connection base of swivel chair

Technical Field

The application relates to the field of seats, in particular to a connecting base of a swivel chair.

Background

The swivel chair is one of the classes of computer chairs, office chairs and negotiation chairs, and is a chair with a sitting part capable of rotating. Swivel chairs can be classified into half swivel chairs and full swivel chairs.

The common swivel chair in our life generally comprises a claw disc for supporting the ground, a supporting air rod fixed on the claw disc, a chair seat arranged on the supporting air rod, a connecting base fixed below the chair seat and used for being connected with the supporting air rod, a backrest connected with the connecting base, and supporting armrests mutually fixed with the connecting base.

The seat support and the backrest are mutually fixed, if personnel need rotate the swivel chair to talk or rotate the swivel chair to take articles in the office process before the desk, the rotation of the seat support can synchronously drive the backrest to rotate, the collision between the edge of the backrest and the edge of the desktop is very easy to be caused, if the swivel chair is woven, the edge area of the backrest is a fixed area of the woven net, the collision between the backrest and the edge of the desktop is very easy to cause the damage of the woven net or the stability of the fixation between the woven net and the backrest is influenced, and therefore the service life of the swivel chair is influenced.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide the connecting base of the swivel chair, which has the advantages that the seat can freely rotate relative to the backrest, the rotation of the swivel chair can be reduced while the activity space of a human body is not reduced, unnecessary space collision is reduced, and the service life of the swivel chair is prolonged.

The application provides a swivel chair's connection base adopts following technical scheme:

the utility model provides a connection base of swivel chair, including being used for with support the base box that the gas pole pegged graft each other, the upper surface of base box is fixed with a spacing axle, the top of base box still is provided with a supporting baseplate with seat support interconnect, supporting baseplate uses spacing axle as the axle and rotates with the base box to be connected, still be provided with an elasticity return piece that is used for driving the seat support and rotate the return between supporting baseplate and the base box, the one end and the base box screens of elasticity return piece are fixed, the other end and the supporting baseplate screens of elasticity return piece are fixed.

Through adopting above-mentioned technical scheme, when personnel sit on the seat support, if personnel need rotate the health, the orientation of accessible support handrail control swivel chair is motionless, the rotation of rethread waist to drive the relative rotation of supporting baseplate and base box, and then realize the rotation of seat support, at this in-process, reduced the occupation of swivel chair whole rotation to the space, also made the back be in the back of health always, reduced the risk that back and desktop edge collide with. Due to the arrangement of the elastic return piece, the seat is convenient for the automatic return after rotating, and the integration of the swivel chair is also increased. Personnel do on the seat support for a long time, and waist region and shank region keep fixed posture very easily sour and painful for a long time, and personnel need not to control the handrail, only need through the independent rotation of seat support for personnel can keep personnel upper part of the body operating condition and carry out reciprocal torsion to shank and waist, and have relieved waist and shank's pain. Because the seat support is movable, people can easily drive the seat support to rotate with the connecting base when turning around, so that the upper body area is unfolded, most of the back area can be contacted with the backrest, the contact area between the back and the backrest is increased, and the body can be laterally supported on the backrest, so that the movement of the human body is easier and more flexible, and the body is better unfolded.

Preferably, the base box is detachably connected with a connecting seat, and the limiting shaft is fixedly connected to one side, deviating from the base box, of the connecting seat.

Through adopting above-mentioned technical scheme, the connecting seat has increased the area of contact of spacing axle and base box for spacing axle during operation is more stable, because connecting seat and base box can dismantle the connection, if damage appears in spacing axle, also be convenient for the staff change the connecting seat, thereby has reduced the material extravagant.

Preferably, the elastic return piece is a first torsion spring, one side of the fixed limiting shaft of the connecting seat is connected with a first clamping block used for limiting initial positions of two ends of the first torsion spring, and one side of the supporting bottom plate, which faces the base box, is convexly provided with a second clamping block used for driving one end of the first torsion spring to displace so as to enable the first torsion spring to elastically deform.

Through adopting above-mentioned technical scheme, first torsional spring structure is small and exquisite, and the space occupies limitedly, uses with spacing axle cooperation, and the inside space of base is connected to the utilization that can be reasonable, and one end card of first torsional spring is established in one side of first screens piece, and another end card of first torsional spring is established in one side of second screens piece, through supporting baseplate's rotation to drive the elasticity energy storage of first torsional spring, make supporting baseplate take place to rotate the effort that has the return, be favorable to the homing of seat support, also make the seat support can not take place to rotate easily, thereby influence personnel's position of sitting's travelling comfort.

Preferably, the upper surface of the base box is embedded with a plurality of balls for supporting the supporting bottom plate by taking the limiting shaft as an axis, and the balls are in rolling connection with the base box.

Through adopting above-mentioned technical scheme, the setting of ball has played the supporting role to supporting baseplate on the one hand, has reduced supporting baseplate and the relative pivoted frictional force of base box on the other hand, has reduced the unnecessary rotation wearing and tearing of supporting baseplate rotation in-process.

Preferably, the support bottom plate is provided with a track for sliding the balls at a position corresponding to the balls.

Through adopting above-mentioned technical scheme, orbital setting has increased the area of contact between ball and the supporting baseplate for the supporting baseplate atress is more even, also makes and rotates more stable between supporting baseplate and the base box.

Preferably, a limiting bump is fixed on one side of the fixed limiting shaft of the connecting seat, two gear blocks for limiting the maximum rotation angle of the supporting bottom plate are fixedly connected to one side of the supporting bottom plate, which faces the base box, of the supporting bottom plate, the two gear blocks are located on two sides of the limiting bump, and the limiting bump is located on the rotation path of the two gear blocks.

Through adopting above-mentioned technical scheme, because the both sides of seat support are provided with the support handrail, if the seat support sets up to freely rotate, lead to the fact the collision of shank and support handrail easily, but also easy because the unstable potential safety hazard that causes the seat support to rotate excessively of body focus.

Preferably, the peripheral surface of the limiting shaft is fixedly connected with a plurality of stable position supporting blocks, and the stable position supporting blocks are positioned in the first torsion springs.

Through adopting above-mentioned technical scheme, steady position supporting shoe is pressed close to first torsional spring more, has played spacing effect to the work of first torsional spring, has ensured the stability of first torsional spring shrink in-process.

Preferably, the support bottom plate is internally provided with a counterpoint hole for accommodating the passing of the limiting shaft, and the height of the position stabilizing support block is lower than the end surface height of the limiting shaft.

Through adopting above-mentioned technical scheme, steady position supporting shoe has still played auxiliary stay effect to supporting baseplate for supporting baseplate atress is more stable.

Preferably, be provided with restriction supporting baseplate and the relative pivoted locking mechanism of base box in the base box, locking mechanism includes the limiting plate of being connected with the base box inner wall slides, and the limiting plate pierces through base box upper surface and supporting baseplate simultaneously, and limiting plate one side is provided with and rotates the gyration dish of being connected and driving the limiting plate and breaking away from the supporting baseplate screens with base box inner wall, still is provided with in the base box and drives the limiting plate return to the second torsional spring to the supporting baseplate card position of establishing, and the one end and the base box of second torsional spring are fixed, and the other end and the limiting plate of second torsional spring are fixed.

Through adopting above-mentioned technical scheme, the limiting plate card is established simultaneously in base box and supporting baseplate to restricted the relative rotation between supporting baseplate and the base box, make personnel adjust the operating condition of swivel chair according to own demand, locking mechanism simple structure moreover, it is convenient to maintain.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pressure of the waist is relieved, and the supporting bottom plate and the base box rotate relatively, so that the waist can also rotate when the supporting armrests and the backrest do not rotate, and the muscles of the waist are relieved;

2. the collision of the swivel chair is reduced, and the supporting bottom plate and the base box rotate relatively, so that the integral rotation displacement of the swivel chair is reduced, the collision condition of the backrest and the table edge is reduced, and even if the collision occurs, the impact force of the backrest to the table edge can be reduced due to the rotation of the supporting bottom plate, so that the swivel chair is not easy to wear;

3. the body movement is more flexible, and because the seat is freely rotated, people can easily drive the relative rotation between the seat and the connecting base when twisting, so that the movement space of the upper body is increased, and the region of the upper body can also laterally lean on the backrest, so that the body is more relaxed.

Drawings

FIG. 1 is a schematic view showing the overall structure of a swivel chair;

FIG. 2 is a schematic diagram showing the overall structure of the connection base;

FIG. 3 is an exploded view showing the connection structure of the connection base and the support base plate;

FIG. 4 is a schematic diagram showing the structure of a connecting seat;

FIG. 5 is a schematic diagram of a structure embodying a support floor;

FIG. 6 is a schematic diagram showing the internal structure of the base box;

FIG. 7 is an enlarged schematic view of detail A of FIG. 6 and illustrates a schematic structure of a locking mechanism;

fig. 8 is a side view showing a locking mechanism.

Reference numerals illustrate: 11. a claw disk; 12. a universal wheel; 13. a support gas rod; 14. a seat; 15. a support handrail; 16. a backrest; 2. the base is connected; 21. a base box; 211. a groove; 22. a control lever; 23. positioning the shaft sleeve; 24. a pressing plate; 25. a cushion pad; 26. a ring groove; 27. a ring plate; 271. a limiting hole; 3. a support base plate; 31. an alignment hole; 32. a second clamping block; 33. a gear block; 34. a track; 35. perforating; 4. a connecting seat; 41. a limiting shaft; 42. a first clamping block; 43. a stable position supporting block; 44. a limit bump; 5. a first torsion spring; 6. a ball; 7. a connecting plate; 71. a chute; 8. a locking mechanism; 81. a limiting plate; 811. a mating hook; 82. a fixing bolt; 83. a rotary plate; 831. a male hook; 832. a mating groove; 9. a driving mechanism; 91. a support bracket; 92. a driving arm; 93. a handle; 94. a pull wire; 95. a clamping block; 96. and a second torsion spring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

A connecting base of a swivel chair is arranged on the swivel chair, as shown in fig. 1, the swivel chair comprises a claw disc 11 for supporting the ground, and each end part of the claw disc 11 is rotatably connected with a universal wheel 12; a supporting air rod 13 is vertically inserted on the claw disc 11; a seat 14 is horizontally arranged above the supporting air rod 13, the connecting base 2 is fixed on the lower surface of the seat 14, and the end part of the supporting air rod 13 and the connecting base 2 are mutually inserted and fixed. A backrest 16 and two support armrests 15 are also fixed on the connection base 2, the support armrests 15 being located on both sides of the seat 14 respectively.

As shown in fig. 1 and 2, the connection base 2 includes a base case 21 horizontally disposed, the support rails 15 are fixed to both sides of the base case 21, and a support base 3 for interconnecting with the seat 14 is horizontally disposed on the upper surface of the base case 21.

As shown in fig. 3, a circular groove 211 is pressed on the upper surface of the base box 21, a positioning shaft sleeve 23 is fixed on the upper surface of the groove 211, the positioning shaft sleeve 23 and the groove 211 are coaxially arranged, a circular connecting seat 4 is also arranged in the groove 211, the connecting seat 4 is sleeved on the positioning shaft sleeve 23 at the same time, and the connecting seat 4 is fixed on the bottom wall of the groove 211 through bolts. The upper surface of the connecting seat 4 is coaxially and fixedly connected with a tubular limiting shaft 41, the limiting shaft 41 is sleeved on the positioning shaft sleeve 23 in the middle, and the supporting bottom plate 3 is provided with an alignment hole 31 with the same size as the limiting shaft 41. When the supporting bottom plate 3 is placed on the base box 21, the limiting shaft 41 penetrates out of the alignment hole 31, the pressing plate 24 for pressing the supporting bottom plate 3 is further arranged on the limiting shaft 41, a bolt penetrates through the pressing plate 24, the supporting bottom plate 3 and the positioning shaft sleeve 23 in sequence, and a nut is connected to the end portion of the bolt in a threaded mode, so that the supporting bottom plate 3 is connected with the base box 21 in a rotating mode under the limitation of the positioning shaft sleeve 23. In order to reduce the rotational wear between the pressure plate 24 and the support base plate 3, a foam cushion pad 25 is sandwiched between the support base plate 3 and the pressure plate 24, which reduces the wear between the support base plate 3 and the pressure plate 24 and reduces the noise generated during rotation.

As shown in fig. 4 and 5, an elastic return member is further disposed on the connection seat 4, and in this embodiment, the elastic return member adopts a first torsion spring 5, and the first torsion spring 5 is sleeved on the limiting shaft 41. The edge of the upper surface of the connecting seat 4 is fixedly connected with a first clamping block 42, and two ends of the first torsion spring 5 extend towards the direction of the first clamping block 42 and are clamped at two sides of the first clamping block 42. The side of the supporting base plate 3 facing the connecting seat 4 is fixedly connected with a second clamping block 32. When the supporting base plate 3 and the base box 21 are mutually installed and located at the initial position, the second clamping block 32 is clamped between two ends of the first torsion spring 5, if the supporting base plate 3 and the base box 21 rotate relatively, the second clamping block 32 abuts against one end of the first torsion spring 5 and drives the first torsion spring 5 to elastically deform, and the other end of the first torsion spring 5 abuts against the other end of the first clamping block 42 so as to limit free rotation of the first torsion spring 5.

When a person sits on the swivel chair for a long time, the waist keeps in the same posture and can generate ache, the person can keep the working state of the upper body, and the movement of the legs drives the rotation of the waist, so that the relative rotation between the seat 14 and the base box 21 is driven, the waist and the leg areas are moved, and the pressure of the waist is relieved. And as the rotation angle of the seat 14 is larger, the elastic deformation of the first torsion spring 5 is also increased, so that the seat 14 can be actively returned to the initial position under the elastic action of the first torsion spring 5. And the seat 14 is not easy to rotate by an excessive angle, which causes potential safety hazard to the body. When people rotate or take articles in two directions, due to the relative rotation between the seat 14 and the base box 21, the tendency that the backrest 16 follows rotation is reduced while the people drive the seat 14 to rotate, so that the backrest 16 is not easy to collide with the edge of a tabletop, the abrasion of the backrest 16 is reduced, and the service life of the swivel chair is indirectly prolonged. And through the rotation of the seat 14, the activity space of the upper body is greatly improved, so that the upper body can move more flexibly, and the human body can also support the side part areas on the backrest 16, thereby relieving the pressure of different areas of the upper body and relaxing the body.

As shown in fig. 4 and 5, the circumferential surface of the limiting shaft 41 is further integrally provided with 4 position-stabilizing support blocks 43, and the edges of the position-stabilizing support blocks 43 are closer to the inner ring of the first torsion spring 5, so that the movable space of the first torsion spring 5 on the circumferential side of the limiting shaft 41 is limited, and the stability of the first torsion spring 5 during working is improved. And the height of the stable position supporting block 43 is lower than the end surface height of the limiting shaft 41, so that after the supporting bottom plate 3 and the base box 21 are mutually installed, the edge of the supporting bottom plate 3, which is positioned at the alignment hole 31, can be supported on the stable position supporting block 43, and the stress of the supporting bottom plate 3 is more balanced.

As shown in fig. 4 and 5, the rotation angle of the seat 14 is too large to cause the collision between the legs and the supporting armrests 15, and even the unstable gravity center of the body, the rotation angle of the seat 14 is too large to cause the sprain of the waist, in order to solve the above problem, the upper surface of the connecting seat 4 is further fixedly connected with a limiting bump 44, and the limiting bump 44 is located on the extension line of the connection line between the first clamping block 42 and the limiting shaft 41. Two gear blocks 33 are fixedly connected to one side of the supporting bottom plate 3, which faces the connecting seat 4, and the two gear blocks 33 are located on two sides of the limiting protruding block 44. When the support base plate 3 and the base case 21 are relatively rotated, the limit projection 44 interferes with the moving paths of the two gear blocks 33, thereby limiting the maximum rotation angle of the support base plate 3 in both directions.

As shown in fig. 3 and 5, an annular groove 26 is coaxially disposed on the upper surface of the base box 21 and located at the periphery of the groove 211, and a plurality of balls 6 (8 balls 6 in this embodiment are taken as an example) are disposed in the annular groove 26, and the balls 6 are uniformly distributed at the periphery of the groove 211 around the limiting shaft 41. And the side of the supporting base plate 3 facing the base box 21 is provided with a circular track 34 for accommodating the balls 6. When the support base plate 3 is fixed to the base box 21, each ball 6 is supported in the track 34, thereby reducing the frictional force of rotation of the support base plate 3 and the base box 21, and enabling the support base plate 3 to rotate more smoothly. In order to keep the distance between the balls 6, a ring plate 27 is further arranged in the

ring groove

26, and 8 limiting holes 271 for limiting the balls 6 are uniformly formed in the ring plate 27, so that the balls 6 are kept equidistant from time to time in the sliding process of the inner wall of the ring groove 26, and the stress stability of each ball 6 is ensured.

As shown in fig. 6 and 7, a locking mechanism 8 for restricting the relative rotation of the support base plate 3 and the base case 21 is also provided in the base case 21. A connecting plate 7 is vertically fixed in the base box 21, the locking mechanism 8 includes a limiting plate 81 disposed at one side of the connecting plate 7, a sliding groove 71 is vertically formed in a position corresponding to the limiting plate 81 on the connecting plate 7, a fixing bolt 82 is connected to the limiting plate 81, and the fixing bolt 82 is located in the sliding groove 71, so that a sliding path of the limiting plate 81 is limited.

As shown in fig. 7 and 8, a rotary disc 83 is further disposed on one side of the limiting plate 81 of the connecting plate 7, the rotary disc 83 is rotatably connected with the connecting plate 7, a protruding hook 831 is integrally formed on the edge of the rotary disc 83, a mating hook 811 that is mutually buckled with the protruding hook 831 is disposed on the bottom of the limiting plate 81, and a driving mechanism 9 that drives the rotary disc 83 to rotate is further disposed on one side of the connecting plate 7.

As shown in fig. 7 and 8, the driving mechanism 9 includes a support bracket 91 horizontally fixed on one side of the connection plate 7, a driving arm 92 is provided in the support bracket 91, the driving arm 92 is slidably connected with the support bracket 91, a holding handle 93 is fixed on one side of the driving arm 92 away from the rotary disc 83, a pull wire 94 is fixedly connected to the other end of the driving arm 92, a clamping block 95 is fixed on the end of the pull wire 94, and a matching groove 832 for clamping the clamping block 95 is provided on the upper edge of the rotary disc 83. The connecting plate 7 is also provided with a second torsion spring 96, one end of the second torsion spring 96 is fixed on the connecting plate 7, and the other end of the second torsion spring 96 is clamped on the limiting plate 81. The fixing bolt 82 is clamped at the upper edge of the chute 71 under the elastic force of the second torsion spring 96, and the limiting plate 81 passes through the upper surface of the base box 21 and the supporting bottom plate 3 at the same time, and a through hole 35 (as shown in fig. 5) for accommodating the passing of the limiting plate 81 is formed in the supporting bottom plate 3. When the limiting plate 81 penetrates through the base box 21 and the supporting bottom plate 3 at the same time, the relative rotation of the base box 21 and the supporting bottom plate 3 is limited, so that the backrest 16 is driven to rotate in a following way in the process of rotating the seat 14; if the person needs to use the seat 14 to rotate independently, the driving arm 92 can be pulled in a direction away from the rotary disc 83, the driving arm 92 drives the rotary disc 83 to rotate through the pull wire 94 and the clamping block 95, and drives the limiting plate 81 to displace in a vertical direction under the limit of the base box 21 through the convex hook 831 and the matching hook 811, so that the limiting plate 81 is separated from the clamping position of the through hole 35 of the supporting bottom plate 3, and free rotation of the supporting bottom plate 3 and the base box 21 is realized.

The implementation principle of the connection base of the swivel chair of the embodiment of the application is as follows: when the connecting base 2 is spliced, the connecting base 4 is fixed in the groove 211 of the base box 21 through screws, then the first torsion spring 5 is sleeved on the limiting shaft 41 of the connecting base 4, two ends of the first torsion spring 5 are arranged on two sides of the first clamping block 42, then the ball 6 is arranged at the corresponding position on the upper surface of the base box 21, the supporting base plate 3 is placed on the base box 21 in an aligned mode, the limiting shaft 41 penetrates out of the aligning hole 31 of the supporting base plate 3, the second clamping block 32 is inserted into the middle of two ends of the first torsion spring 5, finally the bolts penetrate into the limiting shaft 41 and are mutually fixed with the limiting shaft 41, and finally the claw disc 11, the supporting air rod 13, the connecting base 2, the seat 14, the supporting armrest 15 and the backrest 16 are mutually fixed by staff.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A swivel chair's connection base, its characterized in that: the seat comprises a base box (21) which is used for being mutually spliced with a support air rod (13), wherein a limiting shaft (41) is fixed on the upper surface of the base box (21), a support bottom plate (3) which is mutually connected with a seat (14) is further arranged above the base box (21), the support bottom plate (3) is rotationally connected with the base box (21) by taking the limiting shaft (41) as a shaft, an elastic return piece which is used for driving the seat (14) to rotationally return is further arranged between the support bottom plate (3) and the base box (21), one end of the elastic return piece is fixed with the clamping position of the base box (21), and the other end of the elastic return piece is fixed with the clamping position of the support bottom plate (3);

the base box (21) is internally provided with a locking mechanism (8) for limiting the relative rotation of the supporting bottom plate (3) and the base box (21), the locking mechanism (8) comprises a limiting plate (81) which is connected with the inner wall of the base box (21) in a sliding way, the limiting plate (81) simultaneously penetrates through the upper surface of the base box (21) and the supporting bottom plate (3), one side of the limiting plate (81) is provided with a rotary disc (83) which is rotationally connected with the inner wall of the base box (21) and drives the limiting plate (81) to be separated from the clamping position of the supporting bottom plate (3), the base box (21) is internally provided with a second torsion spring (96) for driving the limiting plate (81) to return to the clamping position of the supporting bottom plate (3), one end of the second torsion spring (96) is fixed with the base box (21), and the other end of the second torsion spring (96) is fixed with the limiting plate (81);

a connecting plate (7) is vertically fixed in the base box (21);

the connecting plate (7) is located one side of limiting plate (81) and still is provided with a gyration dish (83), and gyration dish (83) are connected with connecting plate (7) rotation, and the border integrated into one piece of gyration dish (83) has a protruding hook (831), and the bottom of above-mentioned limiting plate (81) is provided with one and protruding hook (831) the cooperation hook (811) of mutual lock, and one side of connecting plate (7) still is provided with one and drives gyration dish (83) pivoted actuating mechanism (9).

2. The swivel chair connection base of claim 1, wherein: the base box (21) is detachably connected with a connecting seat (4), and the limiting shaft (41) is fixedly connected to one side, deviating from the base box (21), of the connecting seat (4).

3. A swivel chair connection base according to claim 2, wherein: the elastic return piece is a first torsion spring (5), one side of a fixed limiting shaft (41) of the connecting seat (4) is connected with a first clamping block (42) used for limiting initial positions at two ends of the first torsion spring (5), and one side of the supporting bottom plate (3) towards the base box (21) is convexly provided with a second clamping block (32) used for driving one end of the first torsion spring (5) to displace so as to enable the first torsion spring (5) to elastically deform.

4. The swivel chair connection base of claim 1, wherein: the upper surface of base box (21) is used spacing axle (41) to inlay and is equipped with a plurality of ball (6) that are used for supporting backing plate (3) as the axle, and ball (6) are connected with base box (21) roll.

5. The swivel chair connection base of claim 4, wherein: the support bottom plate (3) is provided with a track (34) which is used for accommodating the sliding of the ball (6) at a position corresponding to the ball (6).

6. A swivel chair connection base according to claim 2, wherein: one side of the fixed limiting shaft (41) of the connecting seat (4) is fixedly provided with a limiting lug (44), one side of the supporting bottom plate (3) facing the base box (21) is fixedly connected with two stop blocks (33) for limiting the maximum rotation angle of the supporting bottom plate (3), the two stop blocks (33) are positioned on two sides of the limiting lug (44), and the limiting lug (44) is positioned on the rotation path of the two stop blocks (33).

7. A swivel chair connection base according to claim 3, wherein: the peripheral surface of the limiting shaft (41) is fixedly connected with a plurality of stable position supporting blocks (43), and the stable position supporting blocks (43) are positioned in the first torsion springs (5).

8. The swivel chair connection base of claim 7, wherein: the support bottom plate (3) is internally provided with a counterpoint hole (31) for accommodating the passing of the limiting shaft (41), and the height of the position-stabilizing support block (43) is lower than the end surface height of the limiting shaft (41).