Saddle chair

Abstract

The invention relates to a saddle chair, and relates to the technical field of saddle chairs, the two sides of the top of a fixed base are both connected with fixed rods, the outer walls of the two fixed rods are both sleeved with first gears, the tops of the first gears are connected with a mounting frame, the top ends of the fixed rods are connected with first bevel gears, and the top ends of the first bevel gears are connected with second bevel gears; the mounting frame and the first bevel gear are connected through a bearing, a fixing ring is connected to one side of the mounting frame, a rotating shaft is connected to the middle of the fixing ring through a bearing, a second bevel gear is in key connection with the outer wall of the rotating shaft, and the end, away from the center of the fixing base, of the rotating shaft penetrates through the fixing ring and is connected with a connecting plate; the top of the connecting plate is connected with a cushion; the first gear rotates to drive the rack to do translational motion, the first gear rotates forwards or reversely to drive the mounting frame to rotate synchronously so as to drive the two sets of connecting plates and the cushions to move synchronously, and synchronous opening or closing of the two sets of cushions is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of saddle chairs, and in particular to a saddle chair. Background Art

[0002] Ergonomic chairs are widely used in the current market. While these chairs primarily focus on supporting the spine and distributing pressure across the hips, they still have significant limitations in adapting to diverse sitting postures. This is particularly true for workers who frequently change postures, as traditional office chairs struggle to meet their diverse sitting needs, particularly in promoting blood circulation and reducing muscle fatigue.

[0003] Ordinary ergonomic chairs have limited fit for the hip and leg shape and can only maintain a certain posture. In addition, switching between the existing riding sitting posture and the horizontal sitting posture requires multiple control mechanisms to act separately and cannot be integrated into one operation. Summary of the Invention

[0004] The purpose of this application is to provide a saddle chair.

[0005] In the first aspect, the present application provides a saddle chair adopting the following technical solution: The top of the gear train is connected with the gear shift pinion, and the top of the gear train is connected with the gear shift pinion via a gear rotation, and the gear shift pin is connected with the gear shift pin via a gear rotation.

[0006] The first gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one, so that the gear is meshed with the first gear one by one,

[0007] One end of the rack is connected to a locking plate, and locking holes are arranged on the surface of the locking plate. A backrest support rod is provided on one side of the locking plate, and the backrest support rod is connected to the locking hole by a bolt. The end of the backrest support rod away from the locking plate is connected to a connecting adjustment frame, the middle part of the connecting adjustment frame is connected to an adjusting shaft through a bearing, the middle outer wall of the adjusting shaft is connected to a connecting block, and the end of the connecting block away from the adjusting shaft is connected to the backrest.

[0008] By adopting the above technical solution, the locking plate plays a connecting role. The locking plate enables the backrest support rod to be connected to the rear end of the rack. The position of the backrest can be automatically adjusted as the rack moves forward and backward, so that the backrest remains close to the person's waist. The backrest is adjustably connected to the rear end of the rack through the connecting plate. The connection position between the backrest support rod and the rack can be adjusted through the locking hole to facilitate the adjustment of the backrest distance. Compared with the existing saddle chair, the structure is simpler and more compact, and more convenient to use. The connecting adjustment frame and the adjusting shaft play a connecting role. The adjusting shaft can rotate in the connecting adjustment frame. The rotation of the adjusting shaft drives the connecting block to rotate, thereby driving the backrest to be adjusted to different angles.

[0009] One end of the adjusting shaft passes through the connecting adjusting frame and is connected to a worm gear. A limit frame is provided on an outer wall of the connecting adjusting frame close to the worm gear. A worm is connected to an inner wall of the middle portion of the limit frame through a bearing. The worm is meshed with the worm gear.

[0010] By adopting the above technical solution, the worm gear and the adjusting shaft can rotate synchronously, the limit frame plays a limiting role, and the worm can rotate within the limit frame. The rotation of the worm can drive the worm gear to rotate, thereby driving the adjusting shaft to rotate. The rotation of the adjusting shaft drives the connecting block to rotate, thereby driving the backrest to adjust to different angles. At the same time, the helix angle between the worm gear and the worm wheel is small and self-locking, which can keep the angle of the backrest in the adjusted position.

[0011] A driving motor is provided on the top of the limit frame, and the output end of the driving motor is engaged with the worm. The driving motor drives the worm to rotate, and the rotation of the worm drives the worm wheel to rotate. The rotation of the worm wheel drives the adjusting shaft to rotate synchronously, and the rotation of the adjusting shaft drives the connecting block angle to rotate and adjust.

[0012] By adopting the above technical solution, the drive motor plays a driving role, which can drive the worm to rotate and thus adjust the angle of the backrest.

[0013] A limiting groove is provided on the middle outer wall of the fixed base, the middle part of the limiting groove is connected to a ball screw through a bearing, the outer wall of the ball screw is threadedly connected to a moving block, the outer wall of the moving block is embedded in the limiting groove, and the top outer wall of the moving block is connected to the rack.

[0014] By adopting the above technical solution, the limit groove plays a limiting role, and the ball screw can rotate in the limit groove. The rotation of the ball screw drives the movable block to perform translational movement, thereby driving the rack to perform translational movement, thereby driving the first gear to rotate to facilitate adjustment of the seat cushion. At the same time, the friction angle of the ball screw is smaller than the helix angle, so that the ball screw and the movable block are not self-locking, so that the angle of the seat cushion can be manually adjusted so that the rack can be pushed to perform translational movement when the first gear rotates, so that there are multiple ways to adjust the seat cushion.

[0015] A servo motor is provided on one side outer wall of the fixed base, and the output end of the servo motor is connected to the ball screw. The servo motor drives the ball screw to rotate, and the rotation of the ball screw drives the moving block to perform translational motion, thereby driving the rack to perform translational motion.

[0016] By adopting the above technical solution, the servo motor plays a driving role and can drive the rack to perform translational movement, thereby driving the first gears on both sides to rotate, thereby realizing the synchronous adjustment of the seat cushion and the backrest.

[0017] A movable cavity is provided on one side of the bottom of the limiting groove, and the inner wall of the bottom side of the movable cavity is connected to a bidirectional threaded rod through a bearing, and the outer walls at opposite threads on both sides of the bidirectional threaded rod are threadedly connected to threaded push blocks, and the top outer wall of the threaded push block is connected to a push rod through a rotary joint, and the ends of the two groups of push rods away from the threaded push blocks are connected to a movable plate through a rotary joint.

[0018] By adopting the above technical solution, the movable cavity plays the role of limiting the bidirectional threaded rod. The rotation of the bidirectional threaded rod drives the two sets of threaded push blocks to perform translational movement in relative directions, thereby pushing the bottom ends of the push rods on both sides to perform translational movement, thereby pushing the movable plate to perform lifting and translational movement.

[0019] The top of the movable plate is connected with a push bar, the top of the movable cavity is provided with a strip groove, the strip groove is connected with the limiting groove, and one end of the top of the push bar passes through the strip groove and is connected with a friction pad.

[0020] By adopting the above technical solution, the lifting and lowering of the movable plate can drive the pushing bar to perform synchronous translational movement along the inner wall of the strip groove. The strip groove plays a limiting role. The pushing bar is pushed upward by the push rod to abut against the moving block. The friction pad plays a role in increasing the friction force. Through the different spacing and abutment tightness between the pushing bar and the moving block, the moving block can have a certain adjustable damping effect during the movement, avoiding the two sets of seat cushions from being too loose when adjusted. At the same time, when the pushing bar and the moving block are fully abutted, the moving block can be locked, so that the seat cushion is adjusted to a fixed position and locked.

[0021] An adjusting knob is provided on one side of the bottom of the servo motor, and the output end of the adjusting knob is connected to the bidirectional threaded rod. Twisting the adjusting knob drives the bidirectional threaded rod to rotate, and the rotation of the bidirectional threaded rod drives the two groups of threaded push blocks to perform translational movement in relative directions. The bottom of the fixed base is connected to a supporting leg.

[0022] By adopting the above technical solution, the bidirectional threaded rod can be driven to rotate by twisting the adjustment knob to make adjustments, and the support legs play a supporting role for the entire seat.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The rack can be driven to move in translation by the rotation of the first gear. The forward or reverse rotation of the first gear can drive the mounting frame to rotate synchronously, thereby driving the two sets of connecting plates and the seat cushion to move synchronously, so as to realize the synchronous opening or folding of the two sets of seat cushions. At the same time, when the mounting frame rotates, it drives the helical gear 2 to rotate synchronously along the fixed rod as the center of the circle. Since the helical gear 2 is meshed with the helical gear 1, the helical gear 2 rotates along the fixed rod as the center of the circle while changing the meshing teeth with the helical gear 1, so that the helical gear 2 rotates along the rotating axis as the center of the circle. The rotation of the helical gear 2 drives the rotating shaft to rotate synchronously, thereby driving the connecting plate to move. The rotation of the connecting plate drives the seat cushion to tilt, thereby realizing that the two sets of seat cushions are in an open and tilted state. 2. The backrest support rod is connected to the rear end of the rack through the locking plate, and the position of the backrest can be automatically adjusted as the rack moves forward and backward, so that the backrest remains close to the person's waist. The backrest is adjustably connected to the rear end of the rack through the connecting plate. The connection position between the backrest support rod and the rack can be adjusted through the locking hole to facilitate the adjustment of the backrest distance. Compared with the existing saddle chair, the structure is simpler and more compact, and more convenient to use. The connecting adjustment frame and the adjusting shaft play a connecting role. The adjusting shaft can rotate in the connecting adjustment frame. The rotation of the adjusting shaft drives the connecting block to rotate, thereby driving the backrest to adjust to different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall front view structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the overall side view structure of an embodiment of the present application; Figure 3 This is a schematic diagram of the connection structure between the first gear and the mounting bracket in an embodiment of the present application; Figure 4 This is a schematic diagram of the connection structure between the first gear and the rack in an embodiment of the present application; Figure 5 Schematic diagram of the internal structure of the limiting groove of the fixed base in an embodiment of the present application; Figure 6 This is a schematic diagram of the connection structure between the connection adjustment frame and the connection block in an embodiment of the present application; Explanation of the accompanying drawings: 1. Fixed base; 2. Fixed rod; 3. First gear; 4. Mounting frame; 5. Bevel gear 1; 6. Fixed ring; 7. Rotating shaft; 8. Bevel gear 2; 9. Connecting plate; 10. Cushion; 11. Rack; 12. Locking plate; 13. Locking hole; 14. Backrest support rod; 15. Connecting adjustment frame; 16. Adjusting shaft; 17. Connecting block; 18. Backrest; 19. Worm gear; 20. Limiting frame; 21. Worm; 22. Driving motor; 23. Limiting groove; 24. Ball screw; 25. Moving block; 26. Servo motor; 27. Active cavity; 28. Bidirectional threaded rod; 29. ​​Threaded push block; 30. Push rod; 31. Moving plate; 32. Push bar; 33. Strip groove; 34. Friction pad; 35. Adjusting knob; 36. Support leg DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 - Attachment Figure 6 , further details of this application are given.

[0026] Embodiment: A saddle chair comprises a fixed base 1, both sides of the top of the fixed base 1 are connected to fixed rods 2, the outer walls of the two sets of fixed rods 2 are sleeved with a first gear 3, the first gear 3 and the fixed rods 2 are connected through a bearing, the top of the first gear 3 is connected to a mounting frame 4, the top of the fixed rod 2 is connected to a bevel gear 5, the mounting frame 4 is sleeved on the outer wall of the bevel gear 5, and the mounting frame 4 and the bevel gear 5 are connected through a bearing, one side of the mounting frame 4 is connected to a fixing ring 6, the middle of the fixing ring 6 The first gear 3 is connected to the first gear 3 by a bearing, and the outer wall key of the rotating shaft 7 is connected to the bevel gear 2 8, and the bevel gear 2 8 and the bevel gear 1 5 are meshed with each other. The end of the rotating shaft 7 away from the center of the fixed base 1 passes through the fixed ring 6 and is connected to the connecting plate 9. The top of the connecting plate 9 is connected to the seat cushion 10. The two groups of seat cushions 10 correspond to each other. The middle part of the two groups of first gears 3 is provided with a rack 11, and the rack 11 is meshed with the two groups of first gears 3. The fixed base 1 plays a supporting and fixing role, and the fixed rod 2 plays a limiting role. When the first gear 3 is rotated, the gear 3 drives the rack 11 to move in a translational manner. Since the first gears 3 on both sides are meshed with the rack 11, the two groups of first gears 3 can rotate synchronously in relative directions under the drive of the rack 11. The forward or reverse rotation of the first gear 3 can drive the mounting frame 4 to rotate synchronously, thereby driving the two groups of connecting plates 9 and the seat cushion 10 to move synchronously, thereby realizing the synchronous opening or retraction of the two groups of seat cushions 10. At the same time, when the mounting frame 4 rotates, it drives the bevel gear 2 8 to rotate synchronously along the fixed rod 2 as the center. Since the bevel gear 2 8 is meshed with the bevel gear 1 5, the bevel gear 2 8 rotates along the fixed rod 2 as the center and the meshing teeth of the bevel gear 1 5 are changed, thereby making the bevel gear 2 8 rotate along the rotating shaft 7 as the center. The rotation of the bevel gear 2 8 drives the rotating shaft 7 to rotate synchronously, thereby driving the connecting plate 9 to move, and the rotation of the connecting plate 9 drives the seat cushion 10 to tilt, thereby realizing that the two groups of seat cushions 10 are in an opened and tilted state.

[0027] One end of the rack 11 is connected to a locking plate 12, and locking holes 13 are arranged on the surface of the locking plate 12. A backrest support rod 14 is provided on one side of the locking plate 12. The backrest support rod 14 is connected to the locking hole 13 by a bolt. The end of the backrest support rod 14 away from the locking plate 12 is connected to a connecting adjustment frame 15, and the middle part of the connecting adjustment frame 15 is connected to an adjusting shaft 16 through a bearing. The middle outer wall of the adjusting shaft 16 is connected to a connecting block 17, and the end of the connecting block 17 away from the adjusting shaft 16 is connected to a backrest 18. The locking plate 12 plays a connecting role. The backrest support rod 14 is connected to the rear end of the rack 11 through the locking plate 12, which can The position of the backrest 18 can be automatically adjusted as the rack 11 moves forward and backward, so that the backrest 18 remains close to the person's waist. The backrest 18 is adjustably connected to the rear end of the rack 11 through the connecting plate 9. The connection position between the backrest support rod 14 and the rack 11 can be adjusted through the locking hole 13 to facilitate adjustment of the distance between the backrest 18. Compared with the existing saddle chair, the structure is simpler and more compact, and more convenient to use. The connecting adjustment frame 15 and the adjusting shaft 16 play a connecting role. The adjusting shaft 16 can rotate in the connecting adjustment frame 15. The rotation of the adjusting shaft 16 drives the connecting block 17 to rotate, thereby driving the backrest 18 to adjust to different angles.

[0028] One end of the adjusting shaft 16 passes through the connecting adjustment frame 15 and is connected to a worm gear 19. A limit frame 20 is provided on the outer wall of the connecting adjustment frame 15 close to the worm gear 19. The middle inner wall of the limit frame 20 is connected to a worm 21 through a bearing. The worm 21 is meshed with the worm gear 19, and the worm gear 19 and the adjusting shaft 16 can rotate synchronously. The limit frame 20 plays a limiting role. The worm 21 can rotate in the limit frame 20. The rotation of the worm 21 can drive the worm gear 19 to rotate, thereby driving the adjusting shaft 16 to rotate. The rotation of the adjusting shaft 16 drives the connecting block 17 to rotate, thereby driving the backrest 18 to adjust different angles. At the same time, the helix angle between the worm 21 and the worm gear 19 is small and self-locking, which can keep the angle of the backrest 18 in the adjusted position.

[0029] A drive motor 22 is provided at the top of the limit frame 20. The output end of the drive motor 22 is engaged with the worm 21. The drive motor 22 drives the worm 21 to rotate. The rotation of the worm 21 drives the worm wheel 19 to rotate. The rotation of the worm wheel 19 drives the adjusting shaft 16 to rotate synchronously. The rotation of the adjusting shaft 16 drives the connecting block 17 to rotate and adjust the angle. The drive motor 22 plays a driving role and can drive the worm 21 to rotate, thereby adjusting the angle of the backrest 18.

[0030] A limiting groove 23 is provided on the outer wall of the middle part of the fixed base 1, and a ball screw 24 is connected to the middle part of the limiting groove 23 through a bearing. The outer wall of the ball screw 24 is threadedly connected to a moving block 25, and the outer wall of the moving block 25 is embedded in the limiting groove 23. The top outer wall of the moving block 25 is connected to the rack 11. The limiting groove 23 plays a limiting role, and the ball screw 24 can rotate in the limiting groove 23. The rotation of the ball screw 24 drives the moving block 25 to perform a translational movement, thereby driving the rack 11 to perform a translational movement, thereby driving the first gear 3 to rotate to facilitate adjustment of the seat cushion 10. At the same time, the friction angle of the ball screw 24 is smaller than the helix angle, so that the ball screw 24 and the moving block 25 are not self-locking, so that the angle of the seat cushion 10 can be manually adjusted so that the rack 11 can be pushed to translate when the first gear 3 rotates, so that there are multiple ways to adjust the seat cushion 10.

[0031] A servo motor 26 is provided on the outer wall of one side of the fixed base 1. The output end of the servo motor 26 is connected to the ball screw 24. The servo motor 26 drives the ball screw 24 to rotate. The rotation of the ball screw 24 drives the moving block 25 to perform translational movement, thereby driving the rack 11 to perform translational movement. The servo motor 26 plays a driving role and can drive the rack 11 to perform translational movement, thereby pushing the first gears 3 on both sides to rotate, thereby realizing the synchronous adjustment of the seat cushion 10 and the backrest 18.

[0032] A movable cavity 27 is provided on one side of the bottom of the limiting groove 23. The inner wall of the bottom side of the movable cavity 27 is connected to a bidirectional threaded rod 28 through a bearing. The outer walls of the opposite threads on both sides of the bidirectional threaded rod 28 are threadedly connected to threaded push blocks 29. The top outer wall of the threaded push block 29 is connected to a push rod 30 through a rotary joint. The ends of the two groups of push rods 30 away from the threaded push blocks 29 are connected to a movable plate 31 through a rotary joint. The movable cavity 27 plays the role of limiting the bidirectional threaded rod 28. The rotation of the bidirectional threaded rod 28 drives the two groups of threaded push blocks 29 to perform translational movement in relative directions, thereby pushing the bottom ends of the push rods 30 on both sides to translate, thereby pushing the movable plate 31 to perform lifting and translational movement.

[0033] The top of the movable plate 31 is connected to a pushing bar 32, and the top of the movable cavity 27 is provided with a strip groove 33, which is connected to the limiting groove 23. The top end of the pushing bar 32 passes through the strip groove 33 and is connected to a friction pad 34. The lifting of the movable plate 31 can drive the pushing bar 32 to perform synchronous translation movement along the inner wall of the strip groove 33, and the strip groove 33 plays a limiting role. The pushing bar 32 is pushed upward by the push rod 30 to abut against the moving block 25, and the friction pad 34 plays a role in increasing the friction force. The different spacing and abutment tightness between the pushing bar 32 and the moving block 25 can make the moving block 25 have a certain adjustable damping effect during the movement process, thereby preventing the two groups of seat cushions 10 from being too loose when adjusted. At the same time, when the pushing bar 32 is fully abutted with the moving block 25, the moving block 25 can be locked, so that the seat cushion 10 is adjusted to a fixed position for locking.

[0034] An adjusting knob 35 is provided on one side of the bottom of the servo motor 26. The output end of the adjusting knob 35 is connected to the bidirectional threaded rod 28. Twisting the adjusting knob 35 drives the bidirectional threaded rod 28 to rotate. The rotation of the bidirectional threaded rod 28 drives the two sets of threaded push blocks 29 to perform translational movement in relative directions. A supporting leg 36 is connected to the bottom of the fixed base 1. By twisting the adjusting knob 35, the bidirectional threaded rod 28 can be driven to rotate for adjustment. The supporting leg 36 plays a supporting role in the entire seat.

[0035] The implementation principle of the embodiment of the present application is as follows: first, when the first gear 3 rotates, it can drive the rack 11 to perform translational movement. Since the first gears 3 on both sides are meshed with the rack 11, the two groups of first gears 3 can rotate synchronously in relative directions under the drive of the rack 11. The forward or reverse rotation of the first gear 3 can drive the mounting bracket 4 to rotate synchronously, thereby driving the two groups of connecting plates 9 and the seat cushion 10 to move synchronously, realizing the synchronous opening or retraction of the two groups of seat cushions 10. At the same time, when the mounting bracket 4 rotates, it drives the bevel gear 2 8 to rotate synchronously along the fixed rod 2 as the center of the circle. Since the bevel gear 2 8 is meshed with the bevel gear 1 5, the bevel gear 2 8 rotates along the fixed rod 2 as the center of the circle while changing the meshing teeth with the bevel gear 1 5, thereby making the bevel gear 2 8 rotate along the rotating shaft 7 as the center of the circle. The rotation of the bevel gear 2 8 drives the rotating shaft 7 to rotate synchronously, thereby driving the connecting plate 9 to rotate synchronously. The rotation of the connecting plate 9 drives the seat cushion 10 to tilt, thereby The two groups of seat cushions 10 are in an open and tilted state. The backrest support rod 14 is connected to the rear end of the rack 11 through the locking plate 12, and the position of the backrest 18 can be automatically adjusted as the rack 11 moves forward and backward, so that the backrest 18 remains close to the user's waist. The backrest 18 is adjustably connected to the rear end of the rack 11 through the connecting plate 9. The connection position between the backrest support rod 14 and the rack 11 can be adjusted through the locking hole 13 to facilitate adjustment of the distance between the backrest 18. Compared with the existing saddle chair, the structure is simpler, more compact and more convenient to use. The worm 21 can be driven by the driving motor 22 to rotate. The rotation of the worm 21 can drive the worm wheel 19 to rotate, thereby driving the adjusting shaft 16 to rotate. The rotation of the adjusting shaft 16 drives the connecting block 17 to rotate, thereby driving the backrest 18 to adjust different angles. At the same time, the helix angle between the worm 21 and the worm wheel 19 is small and self-locking, which can keep the angle of the backrest 18 in the adjusted position. The servo motor 26 drives the ball screw 24 to rotate, and the rotation of the ball screw 24 drives the moving block 25 to perform translational motion, thereby driving the rack 11 to perform translational motion, thereby driving the first gear 3 to rotate so as to adjust the seat cushion 10. At the same time, the friction angle of the ball screw 24 is smaller than the helix angle, so that the ball screw 24 and the moving block 25 are not self-locking, so that the angle of the seat cushion 10 can be manually adjusted so that the rack 11 can be pushed to translate when the first gear 3 rotates, so that there are multiple ways to adjust the seat cushion 10. By twisting the adjustment knob 35, the bidirectional threaded rod 28 can be driven to rotate for adjustment. The rotation of the bidirectional threaded rod 28 drives the two sets of threaded push blocks 29 to perform translational motion in relative directions, thereby pushing the two sides The bottom end of the push rod 30 moves horizontally, thereby pushing the moving plate 31 to perform lifting and translational movements. The lifting and lowering of the moving plate 31 can drive the pushing bar 32 to perform synchronous translational movements along the inner wall of the strip groove 33. The strip groove 33 plays a limiting role. The pushing bar 32 is pushed upward by the push rod 30 to abut against the moving block 25. The friction pad 34 increases the friction force. Through the different spacing and abutment tightness between the pushing bar 32 and the moving block 25, the moving block 25 can have a certain adjustable damping effect during the movement process, avoiding the two groups of seat cushions 10 from being too loose when adjusted. At the same time, when the pushing bar 32 is completely abutted against the moving block 25, the moving block 25 can be locked, so that the seat cushion 10 is adjusted to a fixed position and locked.

[0036] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A saddle chair comprising a fixed base (1), characterized in that: Both sides of the top of the fixed base (1) are connected to fixed rods (2), and the outer walls of the two groups of fixed rods (2) are sleeved with first gears (3). The first gears (3) and the fixed rods (2) are connected through bearings. The top of the first gear (3) is connected to a mounting frame (4). The top of the fixed rod (2) is connected to a bevel gear (5). The mounting frame (4) is sleeved on the outer wall of the bevel gear (5), and the mounting frame (4) and the bevel gear (5) are connected through bearings. One side of the mounting frame (4) is connected to a fixing ring (6). The middle part of the fixed ring (6) is connected to a rotating shaft (7) through a bearing, and the outer wall key of the rotating shaft (7) is connected to the bevel gear 2 (8), and the bevel gear 2 (8) and the bevel gear 1 (5) are meshed with each other. The end of the rotating shaft (7) away from the center of the fixed base (1) passes through the fixed ring (6) and is connected to a connecting plate (9), and the top of the connecting plate (9) is connected to a seat cushion (10). The two groups of the seat cushions (10) correspond to each other. The middle parts of the two groups of the first gears (3) are provided with racks (11), and the racks (11) are meshed with the two groups of the first gears (3).

2. The saddle chair according to claim 1, characterized in that: One end of the rack (11) is connected to a locking plate (12), and locking holes (13) are arranged on the surface of the locking plate (12). A backrest support rod (14) is provided on one side of the locking plate (12), and the backrest support rod (14) and the locking hole (13) are connected by bolts. The end of the backrest support rod (14) away from the locking plate (12) is connected to a connection adjustment frame (15), and the middle of the connection adjustment frame (15) is connected to an adjustment shaft (16) through a bearing. The outer wall of the middle of the adjustment shaft (16) is connected to a connection block (17), and the end of the connection block (17) away from the adjustment shaft (16) is connected to a backrest (18).

3. The saddle chair according to claim 2, characterized in that: One end of the adjusting shaft (16) passes through the connecting adjusting frame (15) and is connected to a worm wheel (19). A limit frame (20) is provided on an outer wall of one side of the connecting adjusting frame (15) close to the worm wheel (19). A worm (21) is connected to an inner wall of a middle portion of the limit frame (20) via a bearing. The worm (21) is meshed with the worm wheel (19).

4. The saddle chair according to claim 3, characterized in that: A driving motor (22) is provided on the top of the limit frame (20), and the output end of the driving motor (22) is engaged with the worm (21). The driving motor (22) drives the worm (21) to rotate, and the rotation of the worm (21) drives the worm wheel (19) to rotate, and the rotation of the worm wheel (19) drives the adjusting shaft (16) to rotate synchronously, and the rotation of the adjusting shaft (16) drives the angle of the connecting block (17) to rotate and adjust.

5. The saddle chair according to claim 2, characterized in that: A limiting groove (23) is provided on the middle outer wall of the fixed base (1), the middle of the limiting groove (23) is connected to a ball screw (24) via a bearing, the outer wall of the ball screw (24) is threadedly connected to a moving block (25), the outer wall of the moving block (25) is embedded in the limiting groove (23), and the top outer wall of the moving block (25) is connected to the rack (11).

6. The saddle chair according to claim 5, characterized in that: A servo motor (26) is provided on an outer wall of one side of the fixed base (1). The output end of the servo motor (26) is connected to the ball screw (24). The servo motor (26) drives the ball screw (24) to rotate. The rotation of the ball screw (24) drives the moving block (25) to perform translational motion, thereby driving the rack (11) to perform translational motion.

7. The saddle chair according to claim 6, characterized in that: A movable cavity (27) is provided on one side of the bottom of the limiting groove (23), and the inner wall of the bottom side of the movable cavity (27) is connected to a bidirectional threaded rod (28) through a bearing, and the outer walls at opposite threads on both sides of the bidirectional threaded rod (28) are threadedly connected to threaded push blocks (29), and the top outer wall of the threaded push block (29) is connected to a push rod (30) through a rotary joint, and the ends of the two groups of push rods (30) away from the threaded push block (29) are connected to a movable plate (31) through a rotary joint.

8. The saddle chair according to claim 7, characterized in that: The top of the movable plate (31) is connected to a push bar (32), the top of the movable cavity (27) is provided with a strip groove (33), the strip groove (33) is connected to the limiting groove (23), and one end of the top of the push bar (32) passes through the strip groove (33) and is connected to a friction pad (34).

9. The saddle chair according to claim 7, characterized in that: An adjusting knob (35) is provided on one side of the bottom of the servo motor (26), and an output end of the adjusting knob (35) is connected to the bidirectional threaded rod (28). Twisting the adjusting knob (35) drives the bidirectional threaded rod (28) to rotate, and the rotation of the bidirectional threaded rod (28) drives the two groups of threaded push blocks (29) to perform translational motion in relative directions. The bottom of the fixed base (1) is connected to a supporting leg (36).

Images