MULTIFUNCTIONAL SWIVEL CHAIR TRAY AND USING METHOD THEREOF

Abstract

A multifunctional swivel chair tray includes a main body. The main body is connected with a warping plate through a second rotating shaft. An ascending and descending block penetrates through the second rotating shaft. The ascending and descending block is connected with an ascending and descending driving mechanism. A first adjusting rod penetrates through one side of the main body. The first adjusting rod is connected with a multi-spring grouping adjusting mechanism. A second adjusting rod is arranged on another side of the main body. The second adjusting rod is connected with a gear adjusting mechanism. The warping plate is connected with a base plate through a third rotating shaft. A slide plate is slidably connected onto the base plate. A slide plate locking mechanism is arranged between the base plate and the slide plate.

Claims

1. A multifunctional swivel chair tray, comprising a main body, wherein an ascending and descending rod connecting hole is formed in the main body, the main body is connected with a warping plate through a second rotating shaft, an ascending and descending block penetrates through the second rotating shaft, the ascending and descending block is positioned above the ascending and descending rod connecting hole, the ascending and descending block is connected with an ascending and descending driving mechanism, a first adjusting rod penetrates through one side of the main body, the first adjusting rod is connected with a multi-spring grouping adjusting mechanism, a second adjusting rod is arranged on another side of the main body, the second adjusting rod is connected with a gear adjusting mechanism, the warping plate is connected with a base plate through a third rotating shaft, a slide plate is slidably connected onto the base plate, and a slide plate locking mechanism is arranged between the base plate and the slide plate.

2. The multifunctional swivel chair tray according to claim 1, wherein the ascending and descending driving mechanism comprises a first handle connected to one side of the main body, the first handle is sleeved outside of the first adjusting rod, an ascending and descending adjusting plate is arranged at an inner end of the first handle, the ascending and descending adjusting plate is connected with an ascending and descending pull rod, the other end of the ascending and descending pull rod is in contact with the ascending and descending block, the ascending and descending block comprises a pipe body penetrating through the second rotating shaft, a first plate member capable of touching the ascending and descending pull rod and a second plate member capable of being in contact with an air pressure rod at the ascending and descending rod connecting hole are respectively arranged on the pipe body, and the first plate member and the second plate member face opposite directions.

3. The multifunctional swivel chair tray according to claim 2, wherein the multi-spring grouping adjusting mechanism comprises a first main spring seat, a first auxiliary spring seat and a second auxiliary spring seat connected onto the warping plate, the first main spring seat is connected with a main spring, the other end of the main spring is fixed on the main body through a second main spring seat, the first auxiliary spring seat and the second auxiliary spring seat are respectively connected with a first auxiliary spring and a second auxiliary spring, the other end of the first auxiliary spring is connected with a third auxiliary spring seat, the other end of the second auxiliary spring is connected with a fourth auxiliary spring seat, an adjusting mechanism is respectively arranged at an outer end of the third auxiliary spring seat and an outer end of the fourth auxiliary spring seat, and a guide block is arranged below the first auxiliary spring and the second auxiliary spring.

4. The multifunctional swivel chair tray according to claim 3, wherein the adjusting mechanism at the outer end of the third auxiliary spring seat comprises a first auxiliary spring adjusting block, the adjusting mechanism at the outer end of the fourth auxiliary spring seat comprises a second auxiliary spring adjusting block, the first auxiliary spring adjusting block and the second auxiliary spring adjusting block penetrate through a support rod, a jacking block is respectively arranged at two ends of the first auxiliary spring adjusting block, and a jacking block is respectively arranged on one side and one end of the second auxiliary spring adjusting block.

5. The multifunctional swivel chair tray according to claim 4, wherein the support rod is connected with a first gear, the first gear is engaged with a second gear, the second gear is connected with the first adjusting rod, a cross section of the support rod is in a hexagon shape, a hexagonal hole adapting to the cross section of the support rod is respectively formed in the middle of the first auxiliary spring adjusting block and the second auxiliary spring adjusting block, an outer end of the first adjusting rod is connected with a first adjusting handwheel, a divided wheel penetrates through the support rod, a small compression spring is arranged on the main body, the small compression spring is connected with a steel ball, and the steel ball jacks on the divided wheel.

6. The multifunctional swivel chair tray according to claim 1, wherein the gear adjusting mechanism comprises a second adjusting handwheel connected with an outer end of the second adjusting rod, an inner end of the second adjusting rod is connected with a gear adjusting block, the gear adjusting block is connected with a gear pull rod, the other end of the gear pull rod is connected with a locking pad through a gear torsion spring, a warping plate protection pad is connected onto the warping plate, an inner side of the warping plate is connected with a gear pad, a plurality of lock holes are formed in a longitudinal direction of the gear pad, and the locking pad is capable of being inserted into the plurality of lock holes.

7. The multifunctional swivel chair tray according to claim 6, wherein an elastic block is arranged below the gear adjusting block, a pressing plate is fixed on the main body, the pressing plate is positioned above the locking pad, a screw is arranged on the pressing plate, the gear torsion spring is connected onto the screw, and the gear torsion spring penetrates through a long hole formed in the pressing plate to be connected with the locking pad.

8. The multifunctional swivel chair tray according to claim 1, wherein the slide plate locking mechanism comprises a second handle connected to the other side of the main body, the second handle is sleeved outside of the second adjusting rod, a slide plate adjusting plate is arranged at an inner end of the second handle, the slide plate adjusting plate is connected with a slide plate pull rod, the slide plate pull rod is connected with an adjusting block, a plurality of slide plate lock holes are formed in the slide plate, a fixing seat is fixed on the base plate, a slide plate locking pad capable of being inserted into the slide plate lock holes is arranged in the fixing seat, the slide plate locking pad is in a crisscross shape, and a slide plate compression spring is arranged between the slide plate locking pad and the fixing seat.

9. The multifunctional swivel chair tray according to claim 8, wherein a position limiting slide groove is formed in the adjusting block, the slide plate pull rod penetrates through the position limiting slide groove, an inclined surface is arranged on the adjusting block, a clamp groove is respectively formed in an upper end and a lower end of the inclined surface, and a clamp pin capable of sliding on the inclined surface is connected onto the slide plate locking pad.

10. The multifunctional swivel chair tray according to claim 1, wherein a connecting seat is connected onto the main body, the ascending and descending rod connecting hole penetrates through upper and lower ends of the connecting seat, a universal ball head is arranged at the upper end of the connecting seat, a spherical slotted hole is formed in the main body, the universal ball head is mounted in the spherical slotted hole in a way of being capable of performing universal rotation, a circle of guide groove uniformly distributed in a circumference direction is arranged on an outer wall of the universal ball head, the guide groove is of an inwards recessed arc-shaped curve surface structure, a plurality of massage mechanisms are uniformly distributed and mounted on the main body, the massage mechanism comprises a push rod, a connecting rod, an ascending and descending guide groove, a slide block, an ascending and descending rod and an ascending and descending seat, the ascending and descending guide groove is fastened and connected onto the main body, the push rod is movably inserted and mounted on the main body, one end of the push rod is abutted against and connected onto the guide groove, the other end of the push rod is hinged to the connecting rod, the slide block is mounted on the ascending and descending guide groove in a way of being capable of vertically sliding, a first pushing groove in inclined arrangement is formed in the slide block, a second pushing groove in inclined arrangement is formed in the ascending and descending guide groove, the first pushing groove and the second pushing groove form a V-shaped structure together, a hinging rod is connected between the first pushing groove and the second pushing groove, the connecting rod and the hinging rod are hinged together, a lower end of the ascending and descending rod is connected with the slide block, an upper end of the ascending and descending rod is connected with the ascending and descending seat, a plurality of massage rods configured to penetrate through a chair base plate are arranged on the ascending and descending seat at intervals, a seat cushion is arranged on the chair base plate, a massage head for massaging the hip is arranged at an upper end of each of the massage rods, the massage head is arranged at a lower end position of the seat cushion, a support seat capable of realizing ascending and descending locking is sleeved over the connecting seat, and the main body is supported on the support seat.

11. A using method of the multifunctional swivel chair tray according to claim 5, the using method comprising: a. when an ascending and descending function is used, rotating the first handle, so that the ascending and descending adjusting plate at the inner end of the first handle drives the ascending and descending pull rod to move, the ascending and descending pull rod is in contact with the first plate member of the ascending and descending block and drives the ascending and descending block to swing around the second rotating shaft, the second plate member of the ascending and descending block is capable of being in contact with the air pressure rod at the ascending and descending rod connecting hole so as to open an air path and complete ascending and descending of a chair; and b. when a multi-spring grouping adjusting function is used, rotating the first adjusting handwheel, so that the first adjusting handwheel drives the second gear to rotate through the first adjusting rod, the second gear drives the support rod to rotate through the first gear, the support rod drives the first auxiliary spring adjusting block and the second auxiliary spring adjusting block to rotate, the divided wheel penetrating through the support rod rotates under the joint effect of the small compression spring and the steel ball, and per quarter circle of rotation of the divided wheel is one station; wherein the first auxiliary spring adjusting block is not in contact with the third auxiliary spring seat, the second auxiliary spring adjusting block is not in contact with the fourth auxiliary spring seat, both the first auxiliary spring and the second auxiliary spring are not stressed, and only the main spring is stressed; the support rod drives the divided wheel to rotate for a quarter circle, the first auxiliary spring adjusting block is in contact with the third auxiliary spring seat, the second auxiliary spring adjusting block is not in contact with the fourth auxiliary spring seat, the second auxiliary spring is not stressed, and the main spring and the first auxiliary spring are stressed; the support rod drives the divided wheel to rotate for a quarter circle again, the first auxiliary spring adjusting block is not in contact with the third auxiliary spring seat, the second auxiliary spring adjusting block is in contact with the fourth auxiliary spring seat, the third auxiliary spring seat is not stressed, and the main spring and the second auxiliary spring adjusting block are stressed; and the support rod drives the divided wheel to rotate for a quarter circle again, the first auxiliary spring adjusting block is in contact with the third auxiliary spring seat, and the second auxiliary spring adjusting block is in contact with the fourth auxiliary spring seat, the third auxiliary spring seat, the second auxiliary spring adjusting block and the main spring are all stressed.

12. A using method of the multifunctional swivel chair tray according to claim 7, the using method comprising: after the warping plate is swung to a certain position, rotating the second adjusting handwheel, wherein the second adjusting rod drives the gear adjusting block to rotate, the elastic block positions the gear adjusting block, the gear adjusting block drives the gear pull rod to pull the gear torsion spring, after the gear torsion spring rotates, the locking pad is driven to extend out, and the locking pad is capable of being inserted into one of the plurality of lock holes of the gear pad, after the second adjusting handwheel is rotated reversely, the locking pad is capable of leaving away from the lock hole, and the warping plate is capable of freely moving.

13. A using method of the multifunctional swivel chair tray according to claim 9, the using method comprising: rotating the second handle, wherein the slide plate adjusting plate at the inner end of the second handle drives the slide plate pull rod to move, the slide plate pull rod pulls the adjusting block, the clamp pin is capable of sliding on the inclined surface, after the clamp pin is positioned in the high-position clamp groove, the slide plate locking pad is capable of leaving away from the slide plate lock hole on the slide plate, and relative free sliding is capable of being realized between the slide plate and the base plate; and after the second handle is released, jacking the slide plate locking pad back into the adjusted slide plate lock hole by using the elasticity of the slide plate compression spring, so as to realize slide plate locking function, and at the same time, through force transmission by the clamp pin, the adjusting block is capable of being retreated back to an initial position.

14. A using method of the multifunctional swivel chair tray according to claim 10, the using method comprising: moving the support seat downwards, so that the support seat leaves away from the main body, universal rotation is capable of being realized between the universal ball head and the spherical slotted hole on the main body, a person sitting on a chair swings while rotating, when an end portion of the push rod slides onto the outer wall of the universal ball head from the guide groove, the push rod is outwards pushed out, the slide block is driven to move upwards through the connecting rod, the first pushing groove and the second pushing groove, so that the massage rod moves upwards, the massage head is abutted against and connected onto the seat cushion to perform touching massage on the hip of the human body, the numbness of the hip after long-time sitting is prevented; moving the support seat upwards and locking the support seat, so that the main body is supported on the support seat to limit the positions of the guide groove and the universal ball head, and mutual swinging between the guide groove and the universal ball head is prevented.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1 is a schematic structure diagram of the present invention;

[0028] FIG. 2 is a schematic structure diagram of an ascending and descending driving mechanism of the present invention;

[0029] FIG. 3 is a schematic structure diagram of a multi-spring grouping adjusting mechanism of the present invention;

[0030] FIG. 4 is a schematic cross-sectional view of a first auxiliary spring of the present invention;

[0031] FIG. 5 is a schematic cross-sectional view of a second auxiliary spring of the present invention;

[0032] FIG. 6 is a schematic structure diagram of a gear adjusting mechanism of the present invention;

[0033] FIG. 7 is a schematic structure diagram of a slide plate locking mechanism of the present invention;

[0034] FIG. 8 is a left-view schematic structure diagram of FIG. 7; and

[0035] FIG. 9 is a right-view schematic structure diagram of FIG. 7.

[0036] FIG. 10 is a cross-sectional view of Embodiment 2 of the present invention;

[0037] FIG. 11 is a schematic local enlarged diagram of FIG. 10 of the present invention; and

[0038] FIG. 12 is a schematic local diagram of an outer wall of a connecting seat of Embodiment 2 of the present invention.

[0039] In the drawings, a correspondence relationship among components, parts and numbers is as follows: 1 denotes a main body; 2 denotes an ascending and descending rod connecting hole; 3 denotes a first rotating shaft; 4 denotes a warping plate; 5 denotes a second rotating shaft; 6 denotes an ascending and descending block; 7 denotes a first adjusting rod; 8 denotes a second adjusting rod; 9 denotes a third rotating shaft; 10 denotes a base plate; 11 denotes a slide plate; 12 denotes a first handle; 13 denotes an ascending and descending adjusting plate; 14 denotes an ascending and descending pull rod; 15 denotes a first plate member; 16 denotes a second plate member; 17 denotes a guide block; 18 denotes an elastic block; 19 denotes a main spring seat I; 20 denotes a main spring; 21 denotes a main spring seat II; 22 denotes a first auxiliary spring seat I; 23 denotes a second auxiliary spring seat I; 24 denotes a first auxiliary spring; 25 denotes a second auxiliary spring; 26 denotes a first auxiliary spring seat II; 27 denotes a second auxiliary spring seat II; 28 denotes a first auxiliary spring adjusting block; 29 denotes a second auxiliary spring adjusting block; 30 denotes a support rod; 31 denotes a first gear; 32 denotes a second gear; 33 denotes a first adjusting handwheel; 34 denotes a divided wheel; 35 denotes a small compression spring; 36 denotes a steel ball; 37 denotes a second adjusting handwheel; 38 denotes a gear adjusting block; 39 denotes a gear pull rod; 40 denotes a gear torsion spring; 41 denotes a locking pad; 42 denotes a warping plate protection pad; 43 denotes a gear pad; 44 denotes a lock hole; 45 denotes a pressing plate; 46 denotes a screw; 47 denotes a second handle; 48 denotes a slide plate adjusting plate; 49 denotes a slide plate pull rod; 50 denotes an adjusting block; 51 denotes a slide plate lock hole; 52 denotes a fixing seat; 53 denotes a slide plate locking pad; 54 denotes a slide plate compression spring; 55 denotes a position limiting slide groove; 56 denotes an inclined surface; 57 denotes a clamp groove; 58 denotes a clamp pin; 100 denotes a connecting seat; 101 denotes a universal ball head; 102 denotes a spherical slotted hole; 103 denotes a guide groove; 104 denotes a push rod; 105 denotes a connecting rod; 106 denotes an ascending and descending guide groove; 107 denotes a slide block; 108 denotes an ascending and descending rod; 109 denotes an ascending and descending seat; 110 denotes a first pushing groove; 111 denotes a second pushing groove; 112 denotes a hinging rod; 113 denotes a chair base plate; 114 denotes a massage rod; 115 denotes a seat cushion; 116 denotes a massage head; 117 denotes a support seat; 118 denotes a locking post; 119 denotes a longitudinal guide groove; 120 denotes a transverse guide groove; 121 denotes a locking groove; 122 denotes a locking head; 123 denotes a locking spring; 124 denotes a position limiting sleeve; 125 denotes a pulling handle; 126 denotes a position limiting cover; 127 denotes a reset spring; and 128 denotes a rolling ball.

DESCRIPTION OF THE EMBODIMENTS

[0040] The technical solution of the present invention is further specifically described through the following embodiments in combination of the accompanying drawings.

[0041] Embodiment 1: A multifunctional swivel chair tray, as shown in FIG. 1, includes a main body 1. An ascending and descending rod connecting hole 2 is formed in the main body. The main body is connected with a warping plate 4 through a second rotating shaft 5. An ascending and descending block 6 penetrates through the second rotating shaft. The ascending and descending block is positioned above the ascending and descending rod connecting hole. The ascending and descending block is connected with an ascending and descending driving mechanism. A first adjusting rod 7 penetrates through one side of the main body. The first adjusting rod is connected with a multi-spring grouping adjusting mechanism. A second adjusting rod 8 is arranged on another side of the main body. The second adjusting rod is connected with a gear adjusting mechanism. The warping plate is connected with a base plate 10 through a third rotating shaft 9. A first rotating shaft 3 is connected between the base plate and the warping plate. A slide plate 11 is slidably connected onto the base plate. A slide plate locking mechanism is arranged between the base plate and the slide plate.

[0042] As shown in FIG. 2, the ascending and descending driving mechanism includes a first handle 12 connected to one side of the main body 1. The first handle is sleeved outside of the first adjusting rod 7. An ascending and descending adjusting plate 13 is arranged at an inner end of the first handle. The ascending and descending adjusting plate is connected with an ascending and descending pull rod 14. The other end of the ascending and descending pull rod is in contact with the ascending and descending block 6. The ascending and descending block includes a pipe body penetrating through the second rotating shaft 5. A first plate member 15 capable of touching the ascending and descending pull rod, and a second plate member 16 capable of being in contact with an air pressure rod at the ascending and descending rod connecting hole 2 are respectively arranged on the pipe body. The first plate member and the second plate member face opposite directions.

[0043] As shown in FIG. 3, FIG. 4 and FIG. 5, the multi-spring grouping adjusting mechanism includes a main spring seat I 19, a first auxiliary spring seat I 22 and a second auxiliary spring seat I 23 connected onto the warping plate 4. The main spring seat I 19 is connected with a main spring 20. The other end of the main spring is fixed on the main body 1 through a main spring seat II 21. The first auxiliary spring seat I 22 and the second auxiliary spring seat I 23 are respectively connected with a first auxiliary spring 24 and a second auxiliary spring 25. The other end of the first auxiliary spring is connected with a first auxiliary spring seat II 26. The other end of the second auxiliary spring is connected with a second auxiliary spring seat II 27. An adjusting mechanism is respectively arranged at an outer end of the first auxiliary spring seat II and the second auxiliary spring seat II. A guide block 17 is arranged below the first auxiliary spring 24 and the second auxiliary spring 25. The adjusting mechanism at the outer end of the first auxiliary spring seat II 26 includes a first auxiliary spring adjusting block 28. The adjusting mechanism at the outer end of the second auxiliary spring seat II 27 includes a second auxiliary spring adjusting block 29. The first auxiliary spring adjusting block and the second auxiliary spring adjusting block penetrate through a support rod 30. A jacking block is respectively arranged at two ends of the first auxiliary spring adjusting block. A jacking block is respectively arranged on one side and one end of the second auxiliary spring adjusting block. The support rod 30 is connected with a first gear 31. The first gear is engaged with a second gear 32. The second gear is connected with the first adjusting rod 7. The cross section of the support rod is in a hexagon shape. A hexagonal hole adapting to the cross section of the support rod is respectively formed in the middle of the first auxiliary spring adjusting block 28 and the second auxiliary spring adjusting block 29. An outer end of the first adjusting rod 7 is connected with a first adjusting handwheel 33. A divided wheel 34 penetrates through the support rod 30. A small compression spring 35 is arranged on the main body 1. The small compression spring is connected with a steel ball 36. The steel ball jacks on the divided wheel.

[0044] As shown in FIG. 6, the gear adjusting mechanism includes a second adjusting handwheel 37 connected with an outer end of the second adjusting rod 8. An inner end of the second adjusting rod is connected with a gear adjusting block 38. The gear adjusting block is connected with a gear pull rod 39. The other end of the gear pull rod is connected with a locking pad 41 through a gear torsion spring 40. A warping plate protection pad 42 is connected onto the warping plate 4. An inner side of the warping plate is connected with a gear pad 43. A plurality of lock holes 44 are formed in a longitudinal direction of the gear pad, and the locking pad is capable of being inserted into the plurality of lock holes. An elastic block 18 is arranged below the gear adjusting block 38. A pressing plate 45 is fixed on the main body. The pressing plate is positioned above the locking pad 41. A screw 46 is arranged on the pressing plate. The gear torsion spring 40 is connected onto the screw. The gear torsion spring penetrates through a long hole formed in the pressing plate to be connected with the locking pad.

[0045] As shown in FIG. 7, FIG. 8 and FIG. 9, the slide plate locking mechanism includes a second handle 47 connected to the other side of the main body 1. The second handle is sleeved outside of the second adjusting rod 8. A slide plate adjusting plate 48 is arranged at an inner end of the second handle. The slide plate adjusting plate is connected with a slide plate pull rod 49. The slide plate pull rod is connected with an adjusting block 50. A plurality of slide plate lock holes 51 are formed in the slide plate 11. A fixing seat 52 is fixed on the base plate 10. A slide plate locking pad 53 capable of being inserted into the slide plate lock holes is arranged in the fixing seat. The slide plate locking pad is in a crisscross shape. A slide plate compression spring 54 is arranged between the slide plate locking pad and the fixing seat. A position limiting slide groove 55 is formed in the adjusting block 50. The slide plate pull rod 49 penetrates through the position limiting slide groove. An inclined surface 56 is arranged on the adjusting block. A clamp groove 57 is respectively formed in an upper end and a lower end of the inclined surface. A clamp pin 58 capable of sliding on the inclined surface is connected onto the slide plate locking pad 53.

[0046] A use method of the multifunctional swivel chair tray includes as follows.

[0047] a. When an ascending and descending function is used, as shown in FIG. 2, the first handle 12 is rotated, so that the ascending and descending adjusting plate 13 at the inner end of the first handle drives the ascending and descending pull rod 14 to move. The ascending and descending pull rod is in contact with the first plate member 15 of the ascending and descending block 6 and drives the ascending and descending block to swing around the second rotating shaft 5. The second plate member 16 of the ascending and descending block is capable of being in contact with the air pressure rod at the ascending and descending rod connecting hole 2 so as to open an air path and complete ascending and descending of a chair.

[0048] b. When a multi-spring grouping adjusting function is used, the first adjusting handwheel 33 is rotated, so that the first adjusting handwheel drives the second gear 32 to rotate through the first adjusting rod 7, and the second gear drives the support rod 30 to rotate through the first gear 31. The support rod drives the first auxiliary spring adjusting block 28 and the second auxiliary spring adjusting block 29 to rotate. The divided wheel 34 penetrating through the support rod rotates under the joint effect of the small compression spring 35 and the steel ball 36, and per quarter circle of rotation of the divided wheel is one station.

[0049] Firstly, the first auxiliary spring adjusting block 28 is not in contact with the first auxiliary spring seat II 26, and the second auxiliary spring adjusting block 29 is not in contact with the second auxiliary spring seat II 27. That is, both the first auxiliary spring 24 and the second auxiliary spring 25 are not stressed, and only the main spring 20 is stressed.

[0050] The support rod 30 drives the divided wheel 34 to rotate for a quarter circle. The first auxiliary spring adjusting block 28 is in contact with the first auxiliary spring seat II 26, and the second auxiliary spring adjusting block 29 is not in contact with the second auxiliary spring seat II 27. That is, the second auxiliary spring 25 is not stressed, and the main spring 20 and the first auxiliary spring 24 are stressed.

[0051] The support rod 30 drives the divided wheel 34 to rotate for a quarter circle again. The first auxiliary spring adjusting block 28 is not in contact with the first auxiliary spring seat II 26, and the second auxiliary spring adjusting block 29 is in contact with the second auxiliary spring seat II 27. That is, the first auxiliary spring seat II 26 is not stressed, and the main spring 20 and the second auxiliary spring adjusting block 29 are stressed.

[0052] The support rod 30 drives the divided wheel 34 to rotate for a quarter circle again. The first auxiliary spring adjusting block 28 is in contact with the first auxiliary spring seat II 26, and the second auxiliary spring adjusting block 29 is in contact with the second auxiliary spring seat II 27. That is, the first auxiliary spring seat II 26, the second auxiliary spring adjusting block 29 and the main spring 20 are all stressed.

[0053] c. When a gear adjusting function is used, as shown in FIG. 6, and after the warping plate 4 is swung to a certain position, the second adjusting handwheel 37 is rotated, and the second adjusting rod 8 drives the gear adjusting block 38 to rotate. The elastic block 18 positions the gear adjusting block. The gear adjusting block drives the gear pull rod 39 to pull the gear torsion spring 40. After the gear torsion spring rotates, the locking pad 41 is driven to extend out. The locking pad is capable of being inserted into one of the plurality of lock holes 44 of the gear pad 43. After the second adjusting handwheel 37 is rotated reversely, the locking pad 41 is capable of leaving away from the lock hole 44. The warping plate is capable of freely moving.

[0054] d. When a slide plate locking function is used, the second handle 47 is rotated, and the slide plate adjusting plate 48 at the inner end of the second handle drives the slide plate pull rod 49 to move. The slide plate pull rod pulls the adjusting block 50. The clamp pin 58 is capable of sliding on the inclined surface 56. After the clamp pin 58 is positioned in the high-position clamp groove 57, the slide plate locking pad 53 is capable of leaving away from the slide plate lock hole 51 on the slide plate 11. Relative free sliding is capable of being realized between the slide plate and the base plate. After the second handle is released, the slide plate locking pad 53 is jacked back into the adjusted slide plate lock hole 51 by using the elasticity of the slide plate compression spring 54. The slide plate locking function is realized. At the same time, through force transmission by the clamp pin 58, the adjusting block 50 is capable of being retreated back to an initial position.

[0055] Embodiment 2: A multifunctional swivel chair tray, as shown in FIG. 10, FIG. 11 and FIG. 12, has a structure similar to that of Embodiment 1. A main difference point is that in the present embodiment, a connecting seat 100 is connected onto the main body. An ascending and descending rod connecting hole penetrates through upper and lower ends of the connecting seat. A universal ball head 101 is arranged at the upper end of the connecting seat. A spherical slotted hole 102 is formed in the main body. The universal ball head is mounted in the spherical slotted hole in a way of being capable of performing universal rotation. A circle of guide groove 103 uniformly distributed in a circumference direction is arranged on an outer wall of the universal ball head. The guide groove is of an inwards recessed arc-shaped curve surface structure. A plurality of massage mechanisms are uniformly distributed and mounted on the main body. The massage mechanism includes a push rod 104, a connecting rod 105, an ascending and descending guide groove 106, a slide block 107, an ascending and descending rod 108 and an ascending and descending seat 109. The ascending and descending guide groove is fastened and connected onto the main body. The push rod is movably inserted and mounted on the main body. One end of the push rod is abutted against and connected onto the guide groove, and the other end is hinged to the connecting rod. The slide block is mounted on the ascending and descending guide groove in a way of being capable of vertically sliding. A first pushing groove 110 in inclined arrangement is formed in the slide block. A second pushing groove 111 in inclined arrangement is formed in the ascending and descending guide groove. The first pushing groove and the second pushing groove form a V-shaped structure together. A hinging rod 112 is connected between the first pushing groove and the second pushing groove. The connecting rod and the hinging rod are hinged together. A lower end of the ascending and descending rod is connected with the slide block. An upper end of the ascending and descending rod is connected with the ascending and descending seat. A plurality of massage rods 114 configured to penetrate through a chair base plate 113 are arranged on the ascending and descending seat at intervals. A seat cushion 115 is arranged on the chair base plate. A massage head 116 for massaging the hip is arranged at an upper end of the massage rod. The massage head is arranged at a lower end position of the seat cushion. A support seat 117 capable of realizing ascending and descending locking is sleeved over the connecting seat. The main body is supported on the support seat. A plurality of locking posts 118 are arranged on an inner wall of the support seat. A plurality of L-shaped guide grooves are formed in an outer wall of the connecting seat in a way of being in one-to-one correspondence with the locking posts. The locking posts are inserted in the guide grooves in an adaptive way. The guide groove includes a longitudinal guide groove 119 and a transverse guide groove 120. A downwards recessed locking groove 121 is formed in an end portion of the transverse guide groove. The width of the transverse guide groove is gradually reduced in a direction approaching the locking groove. An outwards extending locking head 122 is arranged on a lower end of the locking post. A locking spring 123 is mounted between the locking head and the locking post. A lower end of the locking head is abutted against and connected into the locking groove. The lower end of the connecting seat is connected with a position limiting sleeve 124. A plurality of pulling handles 125 are uniformly distributed and arranged on an outer wall of the support seat. An expansion groove is formed in the edge of the spherical slotted hole on a lower end surface of the main body. A position limiting cover 126 is mounted in the expansion groove. An inner wall of the position limiting cover is attached to the outer wall of the universal ball head in an adaptive way. The inner diameter of an upper end of the position limiting cover is close to the outer diameter of the universal ball head. The inner diameter of a lower end of the position limiting cover is smaller than the outer diameter of the universal ball head. A reset spring 127 is mounted between the push rod and the main body. A rolling ball 128 is arranged at an end portion of the push rod. Other structures are identical to those in Embodiment 1.

[0056] According to a use method of the multifunctional swivel chair tray, after long-time sitting, posture adjusting massage is capable of being performed. The support seat is moved downwards, so that the support seat leaves away from the main body. When the support seat moves, anticlockwise rotation is firstly performed. The locking head leaves away from the locking groove. After the locking post reaches the other end of the transverse guide groove, the support seat is downwards pulled, so that the support seat leaves away from the main body and is supported on the position limiting sleeve. At this time, universal rotation is capable of being realized between the universal ball head and the spherical slotted hole on the main body. A person sitting on the chair swings while rotating. When the end portion of the push rod slides onto the outer wall of the universal ball head from the guide groove, the push rod is outwards pushed out. The slide block is driven to move upwards through the connecting rod, the first pushing groove and the second pushing groove, so that the massage rod moves upwards, the massage head is abutted against and connected onto the seat cushion to perform touching massage on the hip of the human body. The numbness of the hip after long-time sitting is prevented. When the end portion of the push rod slides into the guide groove from the outer wall of the universal ball head, under the effect of the reset spring, the push rod moves inwards, and the massage rod is driven to move downwards. The support seat is moved upwards and rotated clockwise. After the locking head slides into the locking groove, locking is performed, so that the main body is supported on the support seat to limit the positions of the guide groove and the universal ball head, and mutual swinging between the guide groove and the universal ball head is prevented.

[0057] The above is merely specific embodiments of the present invention, but the structural characteristics of the present invention are not limited thereto. Changes or modifications made by any of those skilled in the art in the field of the present invention all fall within the patent scope of the present invention.