Adjustment mechanism and seat having the same

Abstract

The utility model discloses a kind of adjusting mechanism and seat with it, adjusting mechanism includes: connecting base;Back connecting piece, back connecting piece is rotatably connected with connecting base;Seat connecting assembly, seat connecting assembly is movably connected with connecting base and is movably connected with back connecting piece, seat connecting assembly is configured when the rear end of back connecting piece is relatively front end downward rotation, seat connecting assembly moves upward and backward and the rear end of seat connecting assembly is higher than front end.According to the adjusting mechanism of the utility model, by seat connecting assembly being configured when the rear end of back connecting piece is relatively front end downward rotation, seat connecting assembly moves upward and backward and the rear end of seat connecting assembly is higher than front end, it can be while guaranteeing that user feels enough back push force, avoid seat lifting user too high, avoid user foot from ground, guarantee the stability and comfort when seat is used, reduce the security risk when seat is used, improve the practicability of seat, improve the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, and in particular to an adjustment mechanism and a seat having the same. Background Technology

[0002] In the field of seating design, self-weighted chassis seats, with their unique mechanical feedback mechanism, bring users a novel user experience and are widely used in office, home, and other scenarios. Current technologies often improve the user experience by increasing back thrust, but this increased thrust comes from increased pressure on the body. Increasing the pressure of the seat cushion on the body can easily cause the feet to leave the ground, compromising the stability and comfort of the seat and negatively impacting the user experience, while also posing certain safety hazards. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an adjustment mechanism that ensures the user experiences sufficient back support while preventing the user's feet from leaving the ground, thus ensuring the stability and comfort of the seat during use, reducing safety hazards, and improving the user experience.

[0004] This utility model also proposes a seat, which includes the above-mentioned adjustment mechanism.

[0005] The adjustment mechanism according to an embodiment of the present utility model includes: a connecting base; a back connector, the back connector being rotatably connected to the connecting base; and a seat connecting assembly, the seat connecting assembly being movably connected to the connecting base and movably connected to the back connector, the seat connecting assembly being configured such that when the rear end of the back connector rotates downward relative to the front end, the seat connecting assembly moves upward and backward and the rear end of the seat connecting assembly is higher than the front end.

[0006] According to the adjustment mechanism of this utility model embodiment, the back connector is rotatably connected to the connecting base, the seat connecting assembly is movably connected to the connecting base and the back connector, and the seat connecting assembly is configured such that when the rear end of the back connector rotates downward relative to the front end, the seat connecting assembly moves upward and backward, and the rear end of the seat connecting assembly is higher than the front end. This can ensure that the user feels sufficient back thrust while preventing the seat from lifting the user too high and preventing the user's feet from leaving the ground. This ensures the stability and comfort of the seat during use, reduces safety hazards during use, improves the practicality of the seat, and further enhances the user experience.

[0007] In addition, the adjustment mechanism according to this utility model may also have the following additional technical features:

[0008] In some embodiments, a first limiting structure and a second limiting structure are provided between the connecting base and the seat connecting assembly. The first limiting structure is located behind the second limiting structure. The first limiting structure includes a first linkage shaft and a first sliding groove. One of the first linkage shaft and the first sliding groove is disposed on the connecting base, and the other is disposed on the seat connecting assembly. The first linkage shaft is movably inserted into the first sliding groove. The second limiting structure includes a second linkage shaft and a second sliding groove. One of the second linkage shaft and the second sliding groove is disposed on the connecting base, and the other is disposed on the seat connecting assembly. The second linkage shaft is movably inserted into the second sliding groove. In the front-to-back direction, both the first sliding groove and the second sliding groove are inclined upwards. The angle between the extension direction of the first sliding groove and the horizontal direction is a first angle, and the angle between the extension direction of the second sliding groove and the horizontal direction is a second angle. The first angle is greater than the second angle. The back connector is used to drive the seat connecting assembly to move upwards when the rear end of the back connector rotates downwards relative to the front end.

[0009] In some embodiments, the first linkage shaft is disposed on the connecting base, the first sliding groove is disposed on the seat connecting assembly, and the back connector is rotatably connected to the connecting base through the first linkage shaft.

[0010] In some embodiments, a driving structure is provided between the seat connecting assembly and the back connecting member. The driving structure includes a third linkage shaft and a third sliding groove. The third linkage shaft is disposed on the back connecting member, and the third sliding groove is disposed on the seat connecting assembly. The third linkage shaft is movably inserted into the third sliding groove, and the third sliding groove is inclined downward in the front-to-back direction.

[0011] In some embodiments, the back connector is disposed within the connecting base, and the connecting base is provided with a clearance groove, which is an arc-shaped groove centered on the rotation center of the back connector, and the third linkage shaft passes through the clearance groove.

[0012] In some embodiments, the seat connection assembly includes a first connector and a second connector. The first connector is movably connected to the connecting base and the back connector. The second connector is disposed above the first connector and movably connected to the first connector. The second connector is movable relative to the first connector in the front-back direction.

[0013] In some embodiments, the second connector is provided with a plurality of second limiting holes spaced apart in the front-rear direction, and the adjustment mechanism further includes a third adjustment component, the third adjustment component including: a third handle; a second transmission component, the second transmission component being connected to the third handle and the first connector to drive one end of the third handle located in the connecting base to extend into one of the second limiting holes.

[0014] In some embodiments, a support portion is provided on the lower end surface of the first connector, and the third handle includes: a hand-held portion, one end of which extends into the connecting base; a straight segment, which is connected to one end of the hand-held portion located on the connecting base and extends in a front-rear direction, the straight segment being supported by the support portion; and a limiting segment, which is connected to the end of the straight segment away from the hand-held portion, the limiting segment extending upward in a direction away from the straight segment, and the second transmission member normally drives the limiting segment to rotate upward along the rotation axis of the straight segment.

[0015] In some embodiments, the second transmission element is a torsion spring and is sleeved on the straight segment.

[0016] This utility model also provides a seat having the above-described embodiments.

[0017] According to the present invention, the seat is equipped with the aforementioned adjustment mechanism. It is rotatably connected to the connecting base via the back connector, and the seat connecting assembly is movably connected to both the connecting base and the back connector. The seat connecting assembly is configured such that when the rear end of the back connector rotates downward relative to the front end, the seat connecting assembly moves upward and backward, and the rear end of the seat connecting assembly is higher than the front end. This ensures that the user feels sufficient back thrust while preventing the seat from lifting the user too high and preventing the user's feet from leaving the ground. This ensures the stability and comfort of the seat during use, reduces safety hazards, improves the practicality of the seat, and further enhances the user experience.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the adjustment mechanism according to an embodiment of the present utility model;

[0021] Figure 2This is a structural schematic diagram of the adjustment mechanism according to an embodiment of the present utility model (wherein, the seat connection component is not shown);

[0022] Figure 3 yes Figure 2 The center circle shows an enlarged structural diagram at point A.

[0023] Figure 4 This is a partially enlarged view of the adjustment mechanism according to an embodiment of the present utility model.

[0024] Figure label:

[0025] 100. Adjustment mechanism;

[0026] 10. Connecting base; 11. Mounting post; 12. Through hole; 13. First linkage shaft; 14. Second slide groove; 15. Clearance groove;

[0027] 20. Back connector; 21. First limiting hole; 22. Third linkage shaft;

[0028] 30. Seat connection assembly; 31. First connector; 32. Second connector; 311. Support part; 312. Guide boss; 321. Second limiting hole; 322. Sliding hole; 33. First slide groove; 34. Second linkage shaft; 35. Third slide groove;

[0029] 40. Support assembly; 41. Connecting shaft; 42. Moving part; 421. Fixed base; 4211. Second rotating shaft; 43. First elastic element;

[0030] 50. First adjusting component; 51. First handle; 511. First rotating shaft; 52. Transmission component; 521. First bevel gear; 522. Second bevel gear; 523. Screw; 524. Nut; 525. Guide component; 5251. Fixing plate; 5252. Guide post;

[0031] 60. Second adjustment component; 61. Second handle; 62. Limiting plate; 63. First transmission component; 64. Rotating component; 611. Protrusion;

[0032] 70. Third adjustment component; 71. Third handle; 72. Second transmission component; 711. Handhold; 712. Linear segment; 713. Limiting segment;

[0033] 81. Second elastic element. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The adjustment mechanism 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, the adjustment mechanism 100 according to an embodiment of the present utility model includes a connecting base 10, a back connector 20, and a seat connecting assembly 30.

[0040] Specifically, see the attached document. Figure 1 and attached Figure 2As shown, the connecting base 10 is fixedly mounted on the gas spring, enabling the gas spring to provide stable support for the adjustment mechanism 100, ensuring reliable support, and facilitating the height adjustment of the adjustment mechanism 100 to meet the required adjustment needs. At the same time, the structure is simple and compact, which helps to reduce production costs. The back connector 20 is rotatably connected to the connecting base 10 and is drivenly connected to the backrest of the seat. When the user leans back against the backrest, the rear end of the back connector 20 rotates downward relative to the front end. The seat connecting assembly 30 is used to install the seat cushion. The seat connecting assembly 30 is movably connected to the connecting base 10 and movably connected to the back connector 20. The seat connecting assembly 30 is configured such that when the rear end of the back connector 20 rotates downward relative to the front end, the seat connecting assembly 30 moves upward and backward, and the rear end of the seat connecting assembly 30 is higher than the front end.

[0041] Understandably, when a user leans back, the backrest connector 20 is under pressure, causing its rear end to rotate downwards relative to its front end. Through mechanical transmission between the seat connector 30, the backrest connector 20, and the connecting base 10, the seat connector 30 moves upwards and backwards. When the user is using the chair for work, the seat connector 30 moves the seat cushion upwards and backwards, maintaining the user's line of sight level with the screen and reducing neck pressure. Simultaneously, the rising seat cushion adjusts the sitting posture, distributing the user's weight more evenly across the hips and thighs, preventing excessive localized pressure and improving comfort. Furthermore, when leaning back, the body's center of gravity shifts backwards, and the rising seat cushion helps the user maintain balance, preventing a feeling of slipping, increasing stability, reducing the frequency of posture adjustments, and improving concentration. During this process, the reaction force generated by the contact between the user's legs and the seat cushion provides sufficient support feedback, transmitting back thrust and improving chair comfort and user experience.

[0042] In existing technologies, the user experience is often improved by increasing the back thrust. However, the increase in back thrust comes from the increase in pressure on the human body. Once the pressure of the seat cushion on the human body is increased, it is easy for the person's feet to leave the ground, which will destroy the stability and comfort of the seat during use, thereby affecting the user experience and bringing certain safety hazards.

[0043] This invention, by limiting the seat connection component 30 to move upward and backward when the rear end of the back connector 20 rotates downward relative to the front end, and with the rear end of the seat connection component 30 being higher than the front end, can ensure that the user feels sufficient back thrust while preventing the seat from lifting the user too high and preventing the user's feet from leaving the ground. This ensures the stability and comfort of the seat during use, reduces safety hazards during use, improves the practicality of the seat, and further enhances the user experience.

[0044] According to the adjustment mechanism 100 of this utility model embodiment, the back connector 20 is rotatably connected to the connecting base 10, and the seat connecting assembly 30 is movably connected to the connecting base 10 and the back connector 20. The seat connecting assembly 30 is configured such that when the rear end of the back connector 20 rotates downward relative to the front end, the seat connecting assembly 30 moves upward and backward, and the rear end of the seat connecting assembly 30 is higher than the front end. This can ensure that the user feels sufficient back thrust while preventing the seat from lifting the user too high and preventing the user's feet from leaving the ground. This ensures the stability and comfort of the seat during use, reduces safety hazards during use, improves the practicality of the seat, and further enhances the user experience.

[0045] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, a first limiting structure and a second limiting structure are provided between the connecting base 10 and the seat connecting assembly 30. The first limiting structure is located behind the second limiting structure. The first limiting structure includes a first linkage shaft 13 and a first sliding groove 33. One of the first linkage shaft 13 and the first sliding groove 33 is located on the connecting base 10, and the other is located on the seat connecting assembly 30. The first linkage shaft 13 is movably inserted into the first sliding groove 33. The second limiting structure includes a second linkage shaft 34 and a second sliding groove 14. One of the second linkage shaft 34 and the second sliding groove 14 is located on the connecting base 10, and the other is located on the seat connecting assembly 30. The second linkage shaft 34 is movably inserted into the second sliding groove 14. In the direction from front to back, both the first sliding groove 33 and the second sliding groove 14 are inclined upward. The back connector 20 is used to drive the seat connecting assembly 30 to move upward when the rear end of the back connector 20 rotates downward relative to the front end.

[0046] Understandably, when the user leans back against the backrest, the rear end of the backrest connector 20 rotates downward relative to the front end. Driven by the backrest connector 20, the seat connection assembly 30 moves upward. Since the connecting base 10 is fixed, and both the first slide groove 33 and the second slide groove 14 tilt backward in the upward direction, the first linkage shaft 13 moves along the extension direction of the first slide groove 33, and the second linkage shaft 34 moves along the extension direction of the second slide groove 14. Therefore, with the cooperation of the first linkage shaft 13 and the first slide groove 33, and the cooperation of the second linkage shaft 34 and the second slide groove 14, the seat connection assembly 30 moves backward while moving upward, realizing the self-weight-bearing function of the seat, improving seat comfort, and enhancing the user experience.

[0047] It should be noted that, since the first limiting structure and the second limiting structure are spaced apart in the front-to-back direction, they can play a guiding role at two points spaced apart in the front-to-back direction between the connecting base 10 and the seat connecting assembly 30, which facilitates the movement of the seat connecting assembly 30 relative to the connecting base 10 and ensures the reliability and stability of the movement of the seat connecting assembly 30.

[0048] It is understood that one of the first linkage shaft 13 and the first sliding groove 33 is located on the connecting base 10, and the other is located on the seat connecting assembly 30. This can be either the first linkage shaft 13 being located on the connecting base 10 and the first sliding groove 33 being located on the seat connecting assembly 30, or the first linkage shaft 13 being located on the seat connecting assembly 30 and the first sliding groove 33 being located on the connecting base 10. Similarly, one of the second linkage shaft 34 and the second sliding groove 14 is located on the connecting base 10, and the other is located on the seat connecting assembly 30. This can be either the second linkage shaft 34 being located on the connecting base 10 and the second sliding groove 14 being located on the seat connecting assembly 30, or the second linkage shaft 34 being located on the seat connecting assembly 30 and the second sliding groove 14 being located on the connecting base 10.

[0049] In a specific example, see Appendix Figure 1 and attached Figure 2 As shown, the first linkage shaft 13 and the second slide groove 14 are disposed on the connecting base 10, and the first slide groove 33 and the second linkage shaft 34 are disposed on the seat connecting assembly 30, which makes the fit between the connecting base 10 and the seat connecting assembly 30 more stable and reliable. The back connector 20 has a first limit position and a second limit position, which are located at the two ends of the rotation angle range of the back connector 20, respectively. In the first limit position, the first linkage shaft 13 is located at the rear end of the first slide groove 33, and the second linkage shaft 34 is located at the front end of the second slide groove 14. In the second limit position, the first linkage shaft 13 is located at the front end of the first slide groove 33, and the second linkage shaft 34 is located at the rear end of the second slide groove 14, thereby preventing wobbling between the seat connecting assembly 30 and the connecting base 10 and ensuring the overall reliability and stability of the adjustment mechanism 100.

[0050] Of course, this utility model is not limited to this. A third limiting structure other than the first limiting structure and the second limiting structure can also be provided between the connecting base 10 and the seat connecting assembly 30. The third limiting structure can be multiple structures spaced apart from the first limiting structure and the second limiting structure. Each third limiting structure includes a fourth linkage shaft and a fourth sliding groove. One of the fourth linkage shaft and the fourth sliding groove is located on the connecting base 10 and the other is located on the seat connecting assembly 30. The fourth linkage shaft can be movably inserted into the fourth sliding groove. The setting of the third limiting structure can further play a guiding role and further ensure the reliability and stability of the movement of the seat connecting assembly 30.

[0051] Further, see Appendix Figure 1 and attached Figure 2As shown, the angle between the extension direction of the first slide groove 33 and the horizontal direction is the first angle, and the angle between the extension direction of the second slide groove 14 and the horizontal direction is the second angle. The first angle is greater than the second angle. When the lengths of the first slide groove 33 and the second slide groove 14 are the same, the height of the first slide groove 33 in the vertical direction is greater than the height of the second slide groove 14 in the vertical direction. The first slide groove 33 is located behind the second slide groove 14, which allows the lifting height of the front end of the seat connecting assembly 30 to be lower than the lifting height of the rear end during the upward and backward movement of the seat connecting assembly 30. This prevents the seat from lifting the user too high and prevents the user's feet from leaving the ground, thereby ensuring the stability and comfort of the seat during use, reducing safety hazards during seat use, improving the practicality of the seat, and further improving the user experience.

[0052] It should be noted that by adjusting the lengths of the first slide rail 33 and the second slide rail 14, as well as the size of the first and second included angles, the absolute and relative heights of the front and rear ends of the seat connecting assembly 30 can be precisely controlled. This controls the height variation of the front and rear ends of the seat connecting assembly 30, preventing the user's feet from leaving the ground when leaning against the backrest, thus improving the comfort and stability of the seat. Furthermore, through the reasonable design of the first slide rail 33 and the second slide rail 14, it is possible to prevent the user from sliding forward due to excessive height difference between the front and rear ends of the seat connecting assembly 30, ensuring a good user experience.

[0053] In a further embodiment of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, the first linkage shaft 13 is disposed on the connecting base 10, and the first slide groove 33 is disposed on the seat connecting assembly 30. The back connector 20 and the connecting base 10 are rotatably connected through the first linkage shaft 13. It can be understood that by disposing of the first linkage shaft 13 at the rotation center of the back connector 20 and the connecting base 10, the first linkage shaft 13 can serve as both the rotation shaft of the back connector 20 and the connecting base 10 and the guide shaft that cooperates with the first slide groove 33. Compared with setting an additional rotation shaft to connect the back connector 20 and the connecting base 10, the number of parts of the adjustment mechanism 100 can be reduced, the manufacturing cost of the adjustment mechanism 100 can be reduced, the assembly process of the adjustment mechanism 100 can be simplified, the assembly cost of the adjustment mechanism 100 can be reduced, and the production efficiency of the adjustment mechanism 100 can be improved.

[0054] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2As shown, a drive structure is provided between the seat connecting assembly 30 and the back connecting member 20. The drive structure includes a third linkage shaft 22 and a third slide groove 35. The third linkage shaft 22 is located on the back connecting member 20, and the third slide groove 35 is located on the seat connecting assembly 30. The third linkage shaft 22 is movably inserted into the third slide groove 35. In the direction from front to back, the third slide groove 35 is inclined downward. It can be understood that the third linkage shaft 22 is located in front of the first linkage shaft 13. When the user leans back against the backrest, the rear end of the back connecting member 20 rotates downward relative to the front end, and the third linkage shaft 22 moves upward. Since the third slide groove 35 is inclined forward in the direction from bottom to top, through the cooperation of the third linkage shaft 22 and the third slide groove 35, the seat connecting assembly 30 can be driven to move upward and backward when the third linkage shaft 22 moves upward, realizing the self-weight function of the seat, improving seat comfort, and enhancing the user experience.

[0055] It should be noted that the shape and extension direction of the third slide 35 are a combination of the shape and extension direction of the first slide 33 and the second slide 14. By reasonably designing the length-to-height ratio and shape of the third slide 35, the rotation angle of the back connector 20 and the lifting height of the seat connector 30 can be precisely controlled.

[0056] In a further embodiment of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, the back connector 20 is located inside the connecting base 10, and the seat connecting assembly 30 is located outside the connecting base 10. The connecting base 10 is provided with a clearance groove 15, which is an arc-shaped groove with the rotation center of the back connector 20 as the center. The third linkage shaft 22 passes through the clearance groove 15. Since the connecting base 10 is located between the back connector 20 and the seat connecting assembly 30, during the rotation of the back connector 20, the third linkage shaft 22 makes a circular motion with the axis of the first linkage shaft 13 as the center. The shape of the clearance groove 15 matches the motion trajectory of the third linkage shaft 22, which can avoid the third linkage shaft 22 and avoid affecting the normal drive of the third linkage shaft 22 to the seat connecting assembly 30. This ensures that when the rear end of the back connector 20 rotates downward relative to the front end, the seat connecting assembly 30 is driven to move upward and backward.

[0057] In a specific example, see Appendix Figure 1 and attached Figure 2As shown, the back connector 20 is located inside the connecting base 10 and rotatably connected to the rear end of the connecting base 10. The seat connecting assembly 30 is located on the outside of the connecting base 10. The connecting base 10 has a second sliding groove 14 and a clearance groove 15 on both sides along the left and right directions. The seat connecting assembly 30 has a first sliding groove 33 and a third sliding groove 35 on both sides along the left and right directions. The first linkage shaft 13, the second linkage shaft 34, and the third linkage shaft 22 all extend in the left and right directions. In the direction from front to back, the second linkage shaft 34, the third linkage shaft 22, and the first linkage shaft 13 extend in the left and right directions. The moving shafts 13 are arranged in sequence, and the first linkage shaft 13 is the rotation center of the back connector 20 and the connecting base 10. The first linkage shaft 13 passes through the back connector 20 and the connecting base 10 in the left and right direction and cooperates with the first slide groove 33 of the seat connecting assembly 30. The second linkage shaft 34 passes through the second slide groove 14 of the connecting base 10 in the left and right direction and is fixed on the seat connecting assembly 30. The third linkage shaft 22 passes through the back connector 20 in the left and right direction and cooperates with the clearance groove 15 of the connecting base 10 and the third slide groove 35 of the seat connecting assembly 30.

[0058] In some embodiments of this utility model, such as Figure 1 As shown, the seat connection assembly 30 includes a first connector 31 and a second connector 32. The first connector 31 is movably connected to the connecting base 10 and the back connector 20, enabling the rear end of the back connector to be pressurized and rotate downward relative to the front end, causing the first connector 31 to move upward and backward, thus achieving the self-weight-bearing function of the seat and improving the user experience. The second connector 32 is located above the first connector 31 and is movably connected to it. The second connector 32 is movable relative to the first connector 31 in the front-back direction, allowing the second connector 32 to drive the seat cushion of the connected seat to move independently in the front-back direction. Users can flexibly control the second connector 32 to slide forward or backward according to their own needs, thereby adjusting the position of the seat surface and improving riding comfort. This enhances user comfort, meets the different usage needs of different users, and ensures the stability of the seat during use.

[0059] In some embodiments, such as Figure 1 As shown, the second connector 32 is provided with a sliding hole 322, which extends in the front-to-back direction. The first connector 31 is provided with a guide boss 312, which extends into the sliding hole 322 and can slide along the length of the sliding hole 322. This enables the second connector 32 and the first connector 31 to be movably connected. Through the cooperation of the guide boss 312 and the sliding hole 322, a guiding function is provided to ensure that the second connector 32 moves reliably relative to the first connector 31 in the front-to-back direction, avoiding problems such as offset, thereby ensuring reliable adjustment.

[0060] In some embodiments, such as Figure 1 As shown, there are multiple sliding holes 322, which are spaced apart on the first connector 31. There are multiple guide bosses 312 that correspond one-to-one with the multiple sliding holes 322. By having the multiple guide bosses 312 cooperate with the multiple sliding holes 322 respectively, the guiding requirements of the first connector 31 and the second connector 32 at multiple different positions can be met, ensuring reliable guidance and preventing the second connector 32 from shifting.

[0061] In embodiments of this utility model, the number of sliding holes 322 can be flexibly set according to actual conditions. For example, the second limiting hole 321 can be as follows: Figure 1 The number shown is four, but it can also be two, three, five, six or more, all of which are within the protection scope of this utility model.

[0062] Of course, the sliding hole 322 can also be located on the first connector 31. Specifically, the first connector 31 is provided with a sliding hole 322 extending in the front-back direction, and the second connector 32 is provided with a guide boss 312 extending into the sliding hole 322. The guide boss 312 can slide along the length direction of the sliding hole 322, which is also within the protection scope of this utility model.

[0063] In a further embodiment of this utility model, such as Figure 4 As shown, the second connector 32 is provided with a plurality of second limiting holes 321 spaced apart in the front-back direction. The adjustment mechanism 100 also includes a third adjustment component 70, which includes a third handle 71 and a second transmission component 72. The second transmission component 72 is connected to the third handle 71 and the first connector 31, so that the second transmission component 72 can drive one end of the third handle 71 located in the connecting base 10 to extend into one of the second limiting holes 321, so that the position of the second connector 32 is fixed, ensuring that the position of the seat surface is fixed and avoiding movement that would affect the user's experience of sitting on the seat.

[0064] Meanwhile, the second transmission component 72 can constantly drive one end of the third handle 71 located in the connecting base 10 to extend into one of the second limiting holes 321, which facilitates the extension of one end of the third handle 71 located in the connecting base 10 into one of the second limiting holes 321, avoiding problems such as loosening, and is easy to adjust, which helps to improve the user experience. At the same time, the structure is simple, easy to process and manufacture, and helps to reduce production costs.

[0065] In embodiments of this utility model, the number of second limiting holes 321 can be flexibly set according to actual conditions. For example, the number of second limiting holes 321 can be as follows: Figure 1The number shown is five, but it can also be two, three, four, six or more, all of which are within the protection scope of this utility model.

[0066] In a further embodiment of this utility model, such as Figure 1 and Figure 2 As shown, a support portion 311 is provided on the lower end surface of the first connector 31. The third handle 71 includes a hand-held portion 711, a straight segment 712, and a limiting segment 713. One end of the hand-held portion 711 extends into the connecting base 10. The straight segment 712 is connected to the end of the hand-held portion 711 located on the connecting base 10 and extends in the front-back direction. The straight segment 712 is supported by the support portion 311 to meet the support requirements of the third handle 71 and ensure that the third handle 71 is reliably supported on the connecting base 10. The limiting segment 713 is connected to the end of the straight segment 712 away from the hand-held portion 711. The limiting segment 713 extends upward in an inclined direction away from the straight segment 712. The second transmission member 72 normally drives the limiting segment 713 to rotate upward along the rotation axis of the straight segment 712.

[0067] Therefore, by pushing the hand-held part 711 up or down, the limiting section 713 can rotate up or down along the rotation axis of the straight section 712, so that the limiting section 713 can extend into or out of the second limiting hole 321, which facilitates the position adjustment and locking of the second connecting member 32, making the adjustment convenient. In addition, the third handle 71 has a simple structure, which is easy to process and manufacture, and helps to reduce production costs.

[0068] In some embodiments, such as Figure 2 As shown, there can be multiple support parts 311, which are spaced apart in the front-rear direction. The straight segment 712 is supported on multiple support parts 311, which can support different positions of the straight segment 712 to ensure reliable support, thereby ensuring reliable support for the third handle 71.

[0069] In embodiments of this utility model, the number of support portions 311 can be flexibly set according to actual conditions. For example, the support portions 311 can be as follows: Figure 2 The number shown is two, but it can also be three, five, four, six or more, all of which are within the protection scope of this utility model.

[0070] In a further embodiment of this utility model, such as Figure 2 As shown, the second transmission component 72 is a torsion spring and is sleeved on the straight segment 712. The torsion spring facilitates the upward rotation of the constant drive limit segment 713 along the rotation axis of the straight segment 712, which meets the requirements and makes the structure of the second transmission component 72 simple, easy to assemble, and can reduce production costs.

[0071] In some embodiments of this utility model, such as Figure 2 As shown, the adjustment mechanism 100 also includes a second elastic element 81, which is a torsion spring and sleeved on the first linkage shaft 13. The two ends of the second elastic element 81 are respectively connected to the connecting base 10 and the back connector 20, so that the second elastic element 81 can drive the rear end of the back connector 20 to rotate upward relative to the front end. The second elastic element 81 can provide the initial force of the back connector 20, so that when the user sits on the seat, the seat can be guaranteed to have appropriate support in the initial state, which is conducive to improving the user experience. Moreover, the structure of the second elastic element 81 is simple and can reduce production costs.

[0072] In some embodiments of this utility model, such as Figures 1-3 As shown, the adjustment mechanism 100 also includes a first adjustment component 50 and a support component 40. The front end of the support component 40 is connected to the first adjustment component 50, and the rear end is connected to the seat connection component 30. When the seat connection component 30 moves, the support component 40 provides support to the seat connection component 30 to ensure that the seat connection component 30 does not experience a support break during movement. This allows the support component 40 to provide continuous and stable support throughout the entire movement of the seat connection component 30, thereby improving the comfort and user experience of the seat using the adjustment mechanism 100.

[0073] It should be noted that the greater the rotation angle of the backrest connector 20, the greater the support force of the support component 40 on the seat connector 30. This gradually increases the support force of the seat cushion on the user when the user leans back against the backrest, and increases the reaction force generated by the user's leg lifting. As a result, the pressure of the backrest on the human body increases, and the user feels a greater back thrust. This effectively compensates for the problem of insufficient force in the latter half of the movement due to self-weight, and ensures that the user can obtain stable and appropriate support throughout the entire leaning process.

[0074] Furthermore, the first adjustment component 50 is connected to the connecting base 10. The first adjustment component 50 is used to adjust the magnitude of the support force provided by the support component 40 to the seat connecting component 30. Thus, by adjusting the initial support force provided by the support component 40 to the seat connecting component 30 through the first adjustment component 50, users can flexibly adjust it according to their own preferences and application scenarios, meeting the personalized needs of different users, improving user satisfaction, and adapting to people of different weights, thereby improving the adaptability and versatility of the adjustment mechanism 100. At the same time, the adjustment mechanism 100 of this utility model has a compact overall structure, high reliability, and strong practicality and market promotion value.

[0075] In some embodiments of this utility model, such as Figure 2 and Figure 3As shown, the support component 40 includes a first elastic member 43, wherein the front end of the first elastic member 43 in the length direction is connected to the first adjustment component 50, and the rear end is connected to the seat connection component 30. The first adjustment component 50 is used to adjust the position of the front end of the first elastic member 43 in the front-rear direction.

[0076] Thus, the first elastic element 43 is connected to the first adjustment component 50 at its front end along its length and to the seat connection component 30 at its rear end, so that the first elastic element 43 provides support to the seat connection component 30, ensuring that the seat connection component 30 will not experience a support break during movement, and thus providing continuous and stable support throughout the entire movement of the seat connection component 30.

[0077] Meanwhile, the first adjustment component 50 is used to adjust the position of the front end of the first elastic member 43 in the front-back direction, thereby adjusting the magnitude of the support force provided by the first elastic member 43 to the seat connection component 30, so that users can flexibly adjust according to their own preferences and application scenarios to meet the personalized needs of different users.

[0078] In some embodiments of this utility model, such as Figures 1-3 As shown, the first elastic element 43 is a tension spring. It can be understood that the front end of the tension spring along its length is connected to the first adjusting component 50, and the rear end is connected to the seat connecting component 30. According to Hooke's Law, the increased tension force generated by the tension spring results in a greater supporting force on the seat connecting component 30. Therefore, by adjusting the position of the front end of the tension spring in the front-rear direction using the first adjusting component 50, the magnitude of the supporting force provided to the seat connecting component 30 can be adjusted, allowing users to flexibly adjust it according to their preferences and application scenarios to meet the personalized needs of different users.

[0079] Meanwhile, the seat connection component 30 is configured such that when the rear end of the back connector 20 rotates downward relative to the front end, the seat connection component 30 is stretched by the tension spring during its upward and backward movement. This results in a greater rotation angle of the back connector 20, which in turn increases the support force of the support component 40 on the seat connection component 30. This effectively compensates for the insufficient force of the self-weight itself in the latter half of the movement, ensuring that the user can obtain stable and appropriate support force throughout the entire leaning process.

[0080] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the support assembly 40 also includes a connecting shaft 41 and a moving member 42. The connecting shaft 41 is disposed on the seat connecting assembly 30. The rear end of the first elastic member 43 is connected to the connecting shaft 41. The moving member 42 is disposed on the connecting base 10. The moving member 42 is located in front of the connecting shaft 41 and is spaced apart from the connecting shaft 41. The front end of the first elastic member 43 is connected to the moving member 42. The first adjusting assembly 50 is connected to the moving member 42 and is used to drive the moving member 42 to move in the front-back direction.

[0081] It is understood that the connecting shaft 41 is mounted on the seat connecting assembly 30, and the rear end of the first elastic member 43 is connected to the connecting shaft 41, thereby connecting the rear end of the first elastic member 43 to the seat connecting assembly 30. The moving member 42 is mounted on the connecting base 10, located in front of the connecting shaft 41 and spaced apart from the connecting shaft 41. The front end of the first elastic member 43 is connected to the moving member 42, thereby connecting the first elastic member 43 to the moving member 42 without being between the moving member 42 and the connecting shaft 41.

[0082] Therefore, by connecting the first adjusting component 50 to the moving component 42 and driving the moving component 42 to move in the front-back direction, the position of the front end of the first elastic component 43 in the front-back direction is adjusted, thereby adjusting the magnitude of the support force provided by the first elastic component 43 to the seat connecting component 30. This allows users to flexibly adjust the force according to their preferences and application scenarios, meeting the personalized needs of different users. At the same time, the moving component 42 transmits the power transmission of the first adjusting component 50 to the first elastic component 43, improving the reliability of the transmission and the overall reliability of the adjusting mechanism 100.

[0083] In some embodiments, such as Figure 2 and Figure 3 As shown, there are two first elastic members 43 spaced apart along the axial direction of the connecting shaft 41. The rear ends of the two first elastic members 43 are respectively connected to the connecting shaft 41, and the front ends of the two first elastic members 43 are respectively connected to the moving member 42. The moving member 42 is driven to move in the front-back direction by the first adjusting component 50, and the position of the front ends of the two first elastic members 43 in the front-back direction is changed synchronously.

[0084] It should be noted that the number of the first elastic element 43 is not limited here. Figure 3 The illustration shows two first elastic elements 43 for illustrative purposes. However, those skilled in the art, upon reading the following technical solution, will clearly understand that applying this solution to one, three, or more first elastic elements 43 would also fall within the protection scope of this utility model. Furthermore, when there are multiple first elastic elements 43, they are spaced apart along the axial direction of the connecting shaft 41.

[0085] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the first adjustment component 50 includes a first handle 51 and a transmission component 52. The first handle 51 is rotatably mounted on the connecting base 10, and the transmission component 52 is connected to both the first handle 51 and the moving member 42, thereby converting the rotation of the first handle 51 into the movement of the moving member 42 in the back-and-forth direction.

[0086] Therefore, the transmission assembly 52 can convert the rotation of the first handle 51 into the movement of the moving part 42 in the front-back direction, thereby driving the moving part 42 to move in the front-back direction, and thus adjusting the position of the front end of the first elastic member 43 in the front-back direction, thereby adjusting the magnitude of the support force provided by the first elastic member 43 to the seat connection assembly 30. At the same time, when the user needs to make adjustments, the user can turn the first handle 51 to adjust the support force, which is simple to operate.

[0087] In some embodiments, such as Figure 1 and Figure 2 As shown, the first handle 51 is located at the front end of the connecting base 10, making the position of the first handle 51 easy to find and convenient for the user to operate the first handle 51 while seated. This helps to improve the convenience of adjusting the support force of the seat connecting component 30 and enhances the user experience.

[0088] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the transmission assembly 52 includes a first bevel gear 521, a second bevel gear 522, and a screw 523. The first bevel gear 521 is sleeved on the first rotating shaft 511 of the first handle 51 and rotates synchronously with the first handle 51. The second bevel gear 522 meshes with the first bevel gear 521. The screw 523 is fixedly connected to the second bevel gear 522 and rotates synchronously with it. The screw 523 extends in the front-back direction. The moving member 42 has a threaded hole that mates with the screw 523, used to convert the rotation of the screw 523 into movement of the moving member 42 in the front-back direction.

[0089] Therefore, when the first handle 51 rotates, the first bevel gear 521 is sleeved on the first rotating shaft 511 of the first handle 51, so that the first bevel gear 521 rotates synchronously and transmits the rotational force to the second bevel gear 522 meshing with the first bevel gear 521. The second bevel gear 522 drives the screw 523 to rotate. Through the threaded hole on the moving part 42 that mates with the screw 523, the rotation of the screw 523 is converted into the movement of the moving part 42 in the front-back direction, thereby adjusting the position of the front end of the first elastic member 43 in the front-back direction, and further adjusting the magnitude of the supporting force provided by the first elastic member 43 to the seat connecting assembly 30. This enables the transmission assembly 52 to convert the rotation of the first handle 51 into the movement of the moving part 42 in the front-back direction, thereby improving the reliability of the transmission assembly 52.

[0090] Furthermore, a nut 524 is provided on the side of the moving part 42 away from the second bevel gear 522, and the screw 523 passes through the nut 524, which further ensures that the rotation of the screw 523 is converted into the movement of the moving part 42 in the front-back direction, thereby improving the reliability of the transmission.

[0091] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the first adjustment assembly 50 includes a guide member 525. The guide member 525 includes a fixed plate 5251 and a guide post 5252. The fixed plate 5251 is sleeved on the first rotating shaft 511. The guide post 5252 is located on the rear side of the fixed plate 5251 and connected to the fixed plate 5251. The guide post 5252 extends in the front-rear direction. The moving member 42 has a guide hole that mates with the guide post 5252.

[0092] Thus, by fixing plate 5251 on the first rotating shaft 511, guide post 5252 is connected to fixed plate 5251, and moving part 42 has guide hole that cooperates with guide post 5252. In the process of transmission assembly 52 converting the rotation of first handle 51 into movement of moving part 42 in the front and back direction, guide part 525 plays a guiding role, ensuring that the movement trajectory of moving part 42 and front end of first elastic part 43 is accurate and avoiding deviation. This ensures the accuracy of adjusting the support force provided by first elastic part 43 to seat connection assembly 30 and improves overall reliability.

[0093] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the movable member 42 is provided with a second rotating shaft 4211, and one end of the first elastic member 43 in the length direction is sleeved on the second rotating shaft 4211 and rotates relative to the second rotating shaft 4211. It can be understood that since the first elastic member 43 is connected to the seat connecting assembly 30, when the seat connecting assembly 30 is configured to rotate downward relative to the front end of the back connecting member 20, during the upward and backward movement of the seat connecting assembly 30, the first elastic member 43, by having one end of its length direction sleeved on the second rotating shaft 4211 and rotating relative to the second rotating shaft 4211, allows the second rotating shaft 4211 to allow the first elastic member 43 to adaptively rotate with the movement direction of the seat connecting assembly 30. This effectively avoids lateral bending or twisting of the first elastic member 43 due to path deviation, ensuring stable support for the seat connecting assembly 30 and improving reliability.

[0094] Furthermore, the movable part 42 is provided with a fixed seat 421, and the fixed seat 421 has a second rotating shaft 4211. Thus, the fixed seat 421 provides fixation for the second rotating shaft 4211, thereby improving the overall reliability.

[0095] In some embodiments of this utility model, such as Figures 1-4 As shown, the adjustment mechanism 100 also includes a second adjustment component 60, which is disposed on the connecting base 10. The second adjustment component 60 fixes the back connector 20. The rotation angle of the back connector 20 can be fixed through the second adjustment component 60 to meet the different usage needs of users for the seat, thereby meeting the diverse needs of users for the seat and ensuring the stability of the seat during use.

[0096] According to some embodiments of this utility model, such as Figures 1-4 As shown, the rear end of the back connector 20 is provided with a plurality of first limiting holes 21. The plurality of first limiting holes 21 are spaced apart along the circumferential direction of the rotation axis between the back connector 20 and the connecting base 10. The second adjustment component 60 includes a second handle 61, a limiting plate 62 and a first transmission component 63. The second handle 61 is movably disposed on the connecting base 10 in the left-right direction. The limiting plate 62 is movably disposed on the connecting base 10 in the front-back direction. The first transmission component 63 is connected to the second handle 61 and the limiting plate 62. The first transmission component 63 can convert the left-right movement of the second handle 61 into the front-back movement of the limiting plate 62.

[0097] Therefore, by moving the second handle 61 left and right, the first transmission component 63 drives the limiting plate 62 to move back and forth, allowing the limiting plate 62 to extend into one of the first limiting holes 21. This fixes the rotational position of the back connector 20, meeting the required angle fixation. Furthermore, the limiting plate 62 can be inserted into different positions of the first limiting holes 21 depending on the rotation angle of the back connector 20, achieving different rotation angle fixations for the back connector 20. This satisfies various user needs and improves the user experience. Simultaneously, the first transmission component 63 can continuously drive the limiting plate 62 to move forward, preventing interference with the back connector 20 when it needs to rotate. This ensures reliable rotation of the back connector 20 and facilitates easy angle fixation for the user, further enhancing the user experience. Additionally, the second adjustment component 60 has a simple structure and is easy to manufacture.

[0098] In embodiments of this utility model, the number of first limiting holes 21 can be flexibly set according to actual conditions. For example, the number of first limiting holes 21 can be as follows: Figure 4 The number shown is two, but it can also be three, four, five, six or more, all of which are within the protection scope of this utility model.

[0099] In some embodiments of this utility model, such as Figure 4 As shown, the connecting base 10 is provided with a mounting post 11, which extends in the vertical direction. The first transmission component 63 is a torsion spring, and the first transmission component 63 is sleeved on the mounting post 11, which can realize the placement of the first transmission component 63 and meet the installation requirements of the first transmission component 63. The first transmission component 63 is a torsion spring, which facilitates the conversion of the left and right movement of the second handle 61 into the forward and backward movement of the limiting plate 62. At the same time, it makes the structure of the first transmission component 63 simple and inexpensive, which helps to reduce production costs.

[0100] According to some embodiments of this utility model, such as Figure 2 and Figure 4As shown, the connecting base 10 is provided with a through hole 12, through which the pneumatic rod can be inserted, so that the pneumatic rod extends into the connecting base 10. The second handle 61 is rotatably disposed on the connecting base 10, and the end of the second handle 61 located in the connecting base 10 is provided with a protrusion 611. The second adjustment assembly 60 also includes a rotating member 64, which is rotatably disposed in the connecting base 10. The rotation axis of the rotating member 64 extends in the left-right direction, and the end of the rotating member 64 away from the rotation axis of the rotating member 64 is opposite to the through hole 12.

[0101] Therefore, when the second handle 61 is rotated, it can drive the protrusion 611 to rotate, so that the protrusion 611 can abut against the other end of the rotating member 64 away from the rotation axis of the rotating member 64, causing the rotating member 64 to rotate along the rotation axis extending in the left and right direction. When the end of the rotating member 64 away from the rotation axis of the rotating member 64 abuts against the upper end of the gas spring, the gas spring can rise and fall, thereby realizing the rise and fall of the adjustment mechanism 100. This facilitates the lifting and lowering operation of the seat, meets the height adjustment requirements of the seat, meets the different usage needs of different users, and thus meets the diverse needs of users for the seat. It can ensure the stability of the seat during use, and the adjustment is convenient, which is conducive to improving the user experience. At the same time, the structure is simple, easy to process and manufacture, and helps to reduce production costs.

[0102] This utility model also proposes a seat having the adjustment mechanism 100 of the above embodiments.

[0103] According to the embodiment of this utility model, the seat is equipped with the aforementioned adjustment mechanism 100, and is rotatably connected to the connecting base 10 via the back connector 20. The seat connecting assembly 30 is movably connected to the connecting base 10 and to the back connector 20. The seat connecting assembly 30 is configured such that when the rear end of the back connector 20 rotates downward relative to the front end, the seat connecting assembly 30 moves upward and backward, and the rear end of the seat connecting assembly 30 is higher than the front end. This ensures that the user feels sufficient back thrust while preventing the seat from lifting the user too high and preventing the user's feet from leaving the ground. This ensures the stability and comfort of the seat during use, reduces safety hazards during use, improves the practicality of the seat, and further enhances the user experience.

[0104] The adjustment mechanism 100 and other components and operations of the seat according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0106] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adjustment mechanism, characterized in that, include: Connect the base; A back connector, which is rotatably connected to the connecting base; A seat connection assembly is movably connected to the connecting base and movably connected to the back connector. The seat connection assembly is configured such that when the rear end of the back connector rotates downward relative to the front end, the seat connection assembly moves upward and backward, and the rear end of the seat connection assembly is higher than the front end.

2. The adjusting mechanism according to claim 1, characterized in that, A first limiting structure and a second limiting structure are provided between the connecting base and the seat connecting assembly. The first limiting structure is located behind the second limiting structure. The first limiting structure includes a first linkage shaft and a first sliding groove. One of the first linkage shaft and the first sliding groove is disposed on the connecting base, and the other is disposed on the seat connecting assembly. The first linkage shaft is movably disposed within the first sliding groove. The second limiting structure includes a second linkage shaft and a second sliding groove. One of the second linkage shaft and the second sliding groove is disposed on the connecting base, and the other is disposed on the seat connecting assembly. The second linkage shaft is movably disposed within the second sliding groove. In the direction from front to back, both the first slide and the second slide are inclined upwards. The angle between the extension direction of the first slide and the horizontal direction is the first angle, and the angle between the extension direction of the second slide and the horizontal direction is the second angle. The first angle is greater than the second angle. The back connector is used to drive the seat connection assembly to move upwards when the rear end of the back connector rotates downwards relative to the front end.

3. The adjusting mechanism according to claim 2, characterized in that, The first linkage shaft is disposed on the connecting base, the first sliding groove is disposed on the seat connecting assembly, and the back connector is rotatably connected to the connecting base through the first linkage shaft.

4. The adjusting mechanism according to claim 1, characterized in that, A driving structure is provided between the seat connecting assembly and the back connecting member. The driving structure includes a third linkage shaft and a third sliding groove. The third linkage shaft is disposed on the back connecting member, and the third sliding groove is disposed on the seat connecting assembly. The third linkage shaft is movably inserted into the third sliding groove. In the direction from front to back, the third sliding groove is inclined downward.

5. The adjusting mechanism according to claim 4, characterized in that, The back connector is disposed inside the connecting base, and the connecting base is provided with a clearance groove. The clearance groove is an arc-shaped groove with the rotation center of the back connector as the center, and the third linkage shaft passes through the clearance groove.

6. The adjusting mechanism according to claim 1, characterized in that, The seat connection assembly includes a first connector and a second connector. The first connector is movably connected to the connecting base and the back connector. The second connector is located above the first connector and is movably connected to the first connector. The second connector is movable relative to the first connector in the front-back direction.

7. The adjusting mechanism according to claim 6, characterized in that, The second connector is provided with a plurality of second limiting holes spaced apart in the front-rear direction. The adjustment mechanism further includes a third adjustment component, which includes: Third handle; The second transmission component is connected to the third handle and the first connector to drive one end of the third handle located in the connecting base to extend into one of the second limiting holes.

8. The adjusting mechanism according to claim 7, characterized in that, The lower end face of the first connector is provided with a support portion, and the third handle includes: A handheld part, one end of which extends into the connecting base; A straight segment, which is connected to one end of the handheld part located on the connecting base and extends in the front-rear direction, and the straight segment is supported by the support part; A limiting segment is connected to the end of the straight segment away from the handheld part. The limiting segment extends upward at an angle away from the straight segment. The second transmission member normally drives the limiting segment to rotate upward along the rotation axis of the straight segment.

9. The adjusting mechanism according to claim 8, characterized in that, The second transmission component is a torsion spring and is sleeved on the straight segment.

10. A type of seat, characterized in that, Includes the adjustment mechanism according to any one of claims 1-9.

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