Attractive adjusting mechanism

Abstract

The utility model discloses a beautiful adjusting mechanism. The mechanism comprises a seat; a chair back assembly; the connecting seat comprises supporting parts extending in the vertical direction, the left side and the right side of the chair back assembly are connected to the upper ends of the two supporting parts, and the lower ends of the supporting parts are slidably connected to the left side and the right side of the chair seat in the front-back direction; an adjusting piece is slidably connected into the connecting base in the left-right direction. The gear adjusting mechanism comprises a clamping head and a clamping groove, the clamping head is arranged on one of the adjusting piece and the connecting base, and the clamping groove is formed in the other one of the adjusting piece and the connecting base; the supporting part comprises a movable panel located at the bottom, and the end, away from the chair seat, of the adjusting piece is connected to the movable panel. The connecting seat has a locking state and an adjusting state which can be switched, in the locking state, the clamping head is clamped into the clamping groove, the adjusting piece and the chair seat are kept relatively fixed, and the outer surface of the movable panel and the outer surface of the supporting part are connected into a complete plane; in the adjusting state, the movable panel drives the adjusting piece to move in the direction away from the chair seat, so that the clamping head is separated from the clamping groove.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an aesthetically pleasing adjustment mechanism. Background Art

[0002] Chairs are common pieces of furniture in everyday life. With technological advancements, existing chairs have expanded beyond basic seating functions to include a wide range of features. For example, in the field of children's chairs, to accommodate children's rapid growth, existing children's chairs typically feature backrests that slide forward and backward relative to the seat, allowing for adjustable seat depth to accommodate children of varying heights and protect their spinal health.

[0003] For example, an existing patent provides a chair with adjustable seat depth (application number: CN201620336365.6), which includes a seat cushion support and a backrest support. The seat cushion support is configured to support the user's buttocks. The backrest support includes a keel bracket, a backrest formed at the end of the keel bracket away from the seat cushion support, and two longitudinal adjustment parts. The two sides of the keel bracket are movably mounted to the seat cushion support via the two longitudinal adjustment parts. When the two longitudinal adjustment parts are operated simultaneously, the backrest support moves longitudinally along the seat cushion support to adjust the seat depth. When the user reaches a comfortable seat depth, the two longitudinal adjustment parts are released. Not only does this allow the backrest support to fit the backs of users of different body shapes, maintaining spinal health, but the adjustment is also simple, allowing even children to make adjustments independently.

[0004] Furthermore, the two outer side walls of the fixed chassis have multiple latching holes arranged longitudinally along the seat cushion support portion. The longitudinal adjustment portion comprises a sliding handle hinged to the keel bracket and a latching tooth. The distal end of the sliding handle is connected to the distal end of the latching tooth, and the distal end of the latching tooth engages with the latching hole. When the sliding handle is pulled upward to disengage the latching tooth from the latching hole, the sliding chassis drives the keel bracket to move longitudinally along the seat cushion support portion, thereby unlocking the backrest support portion from the seat cushion support portion.

[0005] However, the above solution has the following problems: in order to facilitate the user to operate the sliding handle, the sliding handle is exposed and extends beyond the keel bracket in the horizontal direction, which makes the sliding handle feel abrupt compared to the keel bracket, and the sliding handle and the keel bracket are relatively inconsistent in appearance, thereby affecting the overall aesthetics of the seat. Summary of the Invention

[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an aesthetically pleasing adjustment mechanism, by setting the movable panel as a part of the support part. In the locked state, the outer surface of the movable panel and the outer surface of the support part are connected to form a complete plane, so that the movable panel does not feel abrupt compared to the support part, and the surface of the connecting seat is flat, thereby improving the integrity and aesthetics of the seat.

[0007] The solution of the present utility model is achieved as follows:

[0008] The present application provides an aesthetically pleasing adjustment mechanism, comprising:

[0009] a seat configured to support a user's buttocks;

[0010] a chair back assembly configured to support a user's back;

[0011] The connecting seat includes a support portion extending in a vertical direction, the left and right sides of the seat back assembly are connected to the upper ends of the two support portions, and the lower ends of the support portions are slidably connected to the left and right sides of the seat in a front-to-back direction, so that the seat back assembly can slide forward and backward relative to the seat; an adjustment member is slidably connected to the inner side of the connecting seat in a left-to-right direction;

[0012] The gear adjustment mechanism includes a clamping head and a clamping slot, the clamping head is provided in one of the adjusting member and the connecting seat, and the clamping slot is provided in the other of the adjusting member and the connecting seat;

[0013] The supporting portion includes a movable panel at the bottom, which is movably arranged on the supporting portion, and an end of the adjusting member away from the seat is connected to the movable panel, so that the movable panel can drive the adjusting member to slide left and right; the connecting seat has a switchable locking state and an adjusting state. In the locked state, the clamping head is clamped into the clamping slot, and the adjusting member and the seat remain relatively fixed, driving the connecting seat and the seat to remain relatively fixed, and the outer surface of the movable panel and the outer surface of the supporting portion are connected to form a complete plane; in the adjusting state, the movable panel drives the adjusting member to move in a direction away from the seat, so that the clamping head disengages from the clamping slot, and the connecting seat can slide back and forth relative to the seat again.

[0014] Furthermore, a connecting groove is recessed on the underside of the support portion, and the movable panel is mounted in the connecting groove. At least one of the front, rear, and bottom sides of the connecting groove is open. When the user needs to adjust the seat depth, they can access and pry the movable panel through the opening of the connecting groove, further simplifying the seat depth adjustment operation.

[0015] Furthermore, the left and right sides of the seat are recessed with first sliding support grooves extending in a front-to-back direction. The bottom ends of the support portions extend horizontally to form sliding portions that are slidably connected to the first sliding support grooves, allowing the connecting seat to slide forward and backward relative to the seat. By providing the first sliding support grooves with limited sliding portions, the sliding portions remain relatively fixed to the seat in the vertical direction, thereby enhancing the connection strength between the connecting seat and the seat, and further improving the stability of the seat depth adjustment operation.

[0016] Furthermore, the first sliding support groove is formed with a plurality of second sliding support grooves extending in a front-to-rear direction. The sliding portion is connected to the second sliding support grooves via bolts, thereby maintaining the sliding portion relative to the seat in a horizontal direction. The bolted connection of the sliding portion to the seat not only simplifies installation and removal of the sliding portion and the seat, but also enhances the connection strength between the connecting base and the seat, further improving the stability of the seat depth adjustment operation.

[0017] Furthermore, a plurality of second sliding support grooves are provided in the groove wall above the first sliding support groove, and the lower side of the first sliding support groove is provided with an opening, which is configured to allow a user to screw in bolts from the lower side of the sliding portion and connect to the second sliding support grooves. Installing the sliding portion from the opening allows the bolts to be screwed into the second sliding support grooves in a vertical direction, thereby making the installation operation of the sliding portion more convenient.

[0018] Furthermore, a cover plate is detachably connected to the lower end of the seat, configured to cover the opening below the first sliding support groove. This not only prevents the first sliding support groove from being exposed, thereby enhancing the seat's overall appearance and aesthetics, but also supports the lower end of the sliding portion, thereby enhancing the connection strength between the sliding portion and the seat, further improving the stability of the seat depth adjustment operation.

[0019] Furthermore, the left and right connecting seats are connected by a connecting plate, which is configured to allow the connecting seats on both sides to slide forward and backward synchronously. This ensures that the connecting seats on both sides are always on the same horizontal line, preventing the chair back assembly from tilting due to the uneven front and back positions of the left and right connecting seats, thereby effectively improving the stability of the seat depth adjustment operation.

[0020] Furthermore, the seat is a hollow structure, with the hollow portion forming a receiving cavity within which the connecting plate is disposed. Second sliding support grooves extending in a front-to-rear direction are hollowed out on the left and right sides of the seat. The connecting seats on either side are connected to the connecting plates via bolts, which pass through the second sliding support grooves. The connecting plates are not exposed from the seat, resulting in a simpler and more aesthetically pleasing overall appearance. The bolted connection not only ensures a reliable connection strength between the connecting seat and the connecting plate but also facilitates installation and removal. The bolts sliding along the second sliding support grooves also guide the sliding adjustment of the connecting seat, providing greater stability.

[0021] Furthermore, a sliding portion is formed by extending horizontally from the bottom end of the support portion. A third sliding support slot is hollowed out along the left-right direction of the sliding portion, through which the adjusting member is slidably connected to the sliding portion. By installing the adjusting member in the third sliding support slot, which extends horizontally and through the left-right through-the-right direction, the adjusting member remains relatively fixed to the connecting base in the vertical direction and in the front-to-back direction, thereby improving the stability of the connecting base's gear adjustment operation.

[0022] Furthermore, a positioning portion protrudes upward from the bottom of the third sliding support slot. The end of the adjustment member closest to the seat is bent downward to form a stepped engaging portion, with a slot or a head disposed in the engaging portion. An elastic member is disposed between the positioning portion and the engaging portion, which pushes against the engaging portion, ensuring that the engaging portion always tends to move toward the seat. This not only ensures that the head can be stably engaged with the slot in the locked state, thereby improving the stability of the seat, but also that the engaging portion automatically moves toward the seat under the action of the elastic force in the adjustment state, thereby switching the connecting seat to the locked state and making the seat gear adjustment operation more convenient.

[0023] Furthermore, a limit slot extending in the left-right direction is hollowed out on the wall of the third sliding support slot or the adjusting member. The adjusting member and the sliding portion are connected by a bolt, and the bolt passes through the limit slot. This not only improves the connection strength between the two, but also makes the adjustment operation of the adjusting member smoother.

[0024] The aesthetic adjustment mechanism provided by the present application drives the adjustment member to slide left and right by sliding the movable panel, and causes the clamping head to engage in or disengage from the clamping slot, thereby achieving locking or unlocking between the connecting seat and the chair seat, making the seat depth adjustment operation of the chair relatively simple; and the movable panel is part of the support part. In the locked state, the outer surface of the movable panel and the outer surface of the support part are connected to form a complete plane, so that the movable panel has no abrupt feeling compared to the support part, and the surface of the connecting seat is flat, thereby improving the integrity and aesthetics of the chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a seat provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the side structure of a seat provided in an embodiment of the present application when the seat depth is adjusted to the maximum position;

[0028] Figure 3 A schematic diagram of the side structure of a seat provided in an embodiment of the present application when the seat depth is adjusted to the minimum position;

[0029] Figure 4 A schematic diagram of the connection structure between the connecting seat and the chair seat provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of the internal structure of the first sliding support groove after the cover plate provided in an embodiment of the present application is removed;

[0031] Figure 6A schematic diagram of the internal structure of a chair seat provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of the changing process of the connecting socket when switching from the locked state to the adjustable state provided in an embodiment of the present application;

[0033] Figure 8 Schematic diagram of the connection structure between the connecting seat and the adjusting member provided in an embodiment of the present application.

[0034] The figures are marked as follows: 1-seat, 101-accommodating cavity, 110-first sliding support groove, 111-clamp, 120-second sliding support groove, 130-cover plate, 140-connecting plate, 2-backrest assembly, 3-connecting seat, 301-movable panel, 310-support part, 311-connecting groove, 320-adjusting part, 321-clamping groove, 322-clamping part, 323-limiting groove, 330-sliding part, 331-third sliding support groove, 332-positioning part, 333-elastic part. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0036] Please refer to the attached Figure 1-8 , the embodiment of the present application provides an aesthetic adjustment mechanism, comprising:

[0037] a seat 1 configured to support the user's buttocks;

[0038] a chair back assembly 2 configured to support the user's back;

[0039] The connecting seat 3 includes a support portion 310 extending in the vertical direction. The left and right sides of the seat back assembly 2 are connected to the upper ends of the two support portions 310, and the lower ends of the support portions 310 are slidably connected to the left and right sides of the seat 1 in the front-to-back direction, so that the seat back assembly 2 can slide forward and backward relative to the seat 1. An adjustment member 320 is slidably connected to the inner side of the connecting seat 3 in the left-to-right direction.

[0040] The gear adjustment mechanism includes a clamping head 111 and a clamping slot 321. The clamping head 111 is provided in one of the adjusting member 320 and the connecting seat 3, and the clamping slot 321 is provided in the other of the adjusting member 320 and the connecting seat 3;

[0041] The supporting portion 310 includes a movable panel 301 at the bottom, which is movably arranged on the supporting portion 310, and the end of the adjusting member 320 away from the seat 1 is connected to the movable panel 301, so that the movable panel 301 can drive the adjusting member 320 to slide left and right; the connecting seat 3 has a switchable locking state and an adjustment state. In the locking state, the clamping head 111 is clamped into the clamping slot 321, and the adjusting member 320 and the seat 1 remain relatively fixed, driving the connecting seat 3 and the seat 1 to remain relatively fixed, and the outer surface of the movable panel 301 and the outer surface of the supporting portion 310 are connected to form a complete plane; in the adjustment state, the movable panel 301 drives the adjusting member 320 to move in the direction away from the seat 1, so that the clamping head 111 disengages from the clamping slot 321, and the connecting seat 3 can slide back and forth relative to the seat 1 again.

[0042] In this embodiment, the movable panel 301 is slid to drive the adjustment member 320 to slide left and right, and the clamping head 111 is engaged in or disengaged from the clamping slot 321, thereby realizing locking or unlocking between the connecting seat 3 and the seat 1, making the seat depth adjustment operation of the chair relatively simple; and the movable panel 301 is part of the support portion 310. In the locked state, the outer surface of the movable panel 301 and the outer surface of the support portion 310 are connected to form a complete plane, so that the movable panel 301 does not feel abrupt compared to the support portion 310, and the surface of the connecting seat 3 is flat, thereby improving the integrity and aesthetics of the chair.

[0043] Please refer to the attached Figure 7 In some embodiments of the present application, a connection groove 311 is provided on the lower side of the support portion 310 , and the movable panel 301 is provided in the connection groove 311 , and at least one of the front side, rear side and lower side of the connection groove 311 is opened.

[0044] In this embodiment, since the outer surface of the movable panel 301 and the outer surface of the support portion 310 are connected to form a complete plane in the locked state, when the front, rear and lower sides of the connecting groove 311 are closed, the movable panel 301 is completely buried in the support portion 310, which makes it difficult for the user to pull out the movable panel 301, and thus makes the seat depth adjustment operation more inconvenient; therefore, by setting the side opening of the connecting groove 311, when the user needs to adjust the seat depth, he can contact and pry the movable panel 301 from the opening of the connecting groove 311, thereby further improving the simplicity of the seat depth adjustment operation.

[0045] Preferably, the front, rear and lower sides of the connecting groove 311 are all opened, so that the user can easily reach the edge of the movable panel 301, thereby improving the convenience of the seat depth adjustment operation.

[0046] Please refer to the attached Figure 4In some embodiments of the present application, first sliding support grooves 110 extending in a front-to-back direction are recessed on the left and right sides of the seat 1. A sliding portion 330 is formed at the bottom end of the support portion 310 extending horizontally. The sliding portion 330 is slidably connected to the first sliding support groove 110, allowing the connecting base 3 to slide forward and backward relative to the seat 1. By providing the first sliding support groove 110 to limit the sliding portion 330, the sliding portion 330 remains relatively fixed to the seat 1 in the vertical direction, thereby improving the connection strength between the connecting base 3 and the seat 1, and further enhancing the stability of the seat depth adjustment operation.

[0047] Please refer to the attached Figure 5-6 In some embodiments of the present application, a plurality of second sliding support grooves 120 extending in a front-to-rear direction are defined on the wall of the first sliding support groove 110. The sliding portion 330 is bolted to the second sliding support grooves 120, thereby maintaining the sliding portion 330 horizontally fixed relative to the seat 1. Bolting the sliding portion 330 to the seat 1 not only simplifies installation and removal of the sliding portion 330 and the seat 1 but also enhances the connection strength between the connecting base 3 and the seat 1, further improving the stability of the seat depth adjustment operation.

[0048] Please refer to the attached Figure 5-6 In some embodiments of the present application, a plurality of second sliding support grooves 120 are provided on the groove wall above the first sliding support groove 110. The lower side of the first sliding support groove 110 is open, and the opening is configured to allow a user to screw in bolts from the lower side of the sliding portion 330 and connect it to the second sliding support groove 120. Installing the sliding portion 330 from the open position allows the bolts to be screwed into the second sliding support groove 120 in a vertical direction, thereby making the installation operation of the sliding portion 330 easier.

[0049] Preferably, two second sliding support grooves 120 are formed on the upper side wall of the first sliding support groove 110 on each side, so that the sliding portion 330 on each side is slidably connected to the two second sliding support grooves 120, effectively improving the connection strength between the sliding portion 330 and the seat 1, thereby improving the stability of the seat depth adjustment operation. Of course, in other embodiments of the present application, the number of second sliding support grooves 120 on each side of the first sliding support groove 110 can also be one, three, etc.

[0050] Please refer to the attached Figure 5 In some embodiments of the present application, a cover plate 130 is detachably connected to the lower end of the seat 1 , and the cover plate 130 is configured to cover the opening on the lower side of the first sliding support groove 110 .

[0051] In this embodiment, by providing the cover plate 130, not only is the opening on the lower side of the first sliding support groove 110 covered, making the first sliding support groove 110 not easily exposed, thereby making the seat 1 more integrated and beautiful in appearance, but the cover plate 130 also supports the lower end of the sliding part 330, thereby improving the connection strength between the sliding part 330 and the seat 1, and further improving the stability of the seat depth adjustment operation.

[0052] Among them, preferably, the cover plate 130 is fixed to the lower end of the seat 1 by screw connection, which not only makes the connection strength between the cover plate 130 and the seat 1 more reliable, but also makes the installation and removal operations of the cover plate 130 easier.

[0053] Please refer to the attached Figure 6 In some embodiments of the present application, the connecting seats 3 on the left and right sides are connected by a connecting plate 140, and the connecting plate 140 is configured to enable the connecting seats 3 on the left and right sides to slide back and forth synchronously.

[0054] In this embodiment, the connecting seats 3 on the left and right sides are connected by the connecting plate 140, so that when the connecting seat 3 on one side moves forward and backward, the connecting seat 3 on the other side can be driven to move forward and backward synchronously through the connecting plate 140. The connecting seats 3 on both sides can always be located on the same horizontal line, avoiding the tilting of the chair back assembly 2 due to the different front and rear positions of the connecting seats 3 on the left and right sides, thereby effectively improving the stability of the seat depth adjustment operation.

[0055] Please refer to the attached Figure 6 In some embodiments of the present application, the seat 1 is a hollow structure, wherein the hollow portion forms a receiving cavity 101, and the connecting plate 140 is arranged in the receiving cavity 101; the left and right sides of the seat 1 are hollowed out to provide a second sliding support groove 120 extending in the front-to-back direction, and the connecting seats 3 on the left and right sides are connected to the connecting plate 140 by bolts, and the bolts pass through the second sliding support groove 120.

[0056] In this embodiment, by arranging the connecting plate 140 in the accommodating cavity 101, the connecting plate 140 will not be exposed on the seat 1, thereby making the overall appearance of the seat more simple and beautiful, and the connecting seats 3 on both sides are connected to the connecting plate 140 by bolts passing through the second sliding support groove 120, which not only makes the connection strength between the connecting seat 3 and the connecting plate 140 reliable, but also makes the installation and disassembly operations between the two relatively simple. The sliding of the bolts along the second sliding support groove 120 can also guide the sliding adjustment of the connecting seat 3, and the stability is better.

[0057] Please refer to the attached Figure 7-8In some embodiments of the present application, a sliding portion 330 is formed by extending horizontally from the bottom end of the support portion 310. The sliding portion 330 is hollowed out along the left-right direction to form a third sliding support groove 331. The adjusting member 320 is slidably connected to the sliding portion 330 through the third sliding support groove 331. By installing the adjusting member 320 in the third sliding support groove 331 that passes through the left and right sides, the adjusting member 320 remains relatively fixed to the connecting base 3 in the vertical direction and in the front-to-back direction, thereby improving the stability of the gear adjustment operation of the connecting base 3.

[0058] Please refer to the attached Figure 8 In some embodiments of the present application, a positioning portion 332 is provided at the bottom of the third sliding support groove 331 protruding upward, and the end of the adjustment member 320 close to the seat 1 is bent downward to form a stepped clamping portion 322, and the clamping groove 321 or the clamping head 111 is provided on the clamping portion 322; an elastic member 333 is provided between the positioning portion 332 and the clamping portion 322, and the elastic member 333 pushes the clamping portion 322, so that the clamping portion 322 always has a tendency to move toward the seat 1.

[0059] In this embodiment, by providing an elastic member 333 to push the engaging portion 322, the engaging head 111 can be stably engaged with the engaging groove 321 in the locked state and is not easily dislodged by external forces, thereby improving the stability of the seat. In the adjustment state, when the user adjusts the seat depth to a suitable position, they only need to release the sliding panel 301. The engaging portion 322 can automatically move toward the seat 1 under the action of the elastic force, and the engaging head 111 can automatically engage with the engaging groove 321, thereby switching the connecting base 3 to the locked state. This makes the gear adjustment operation of the seat easier.

[0060] Preferably, a plurality of clamping heads 111 are provided at intervals along the front-to-back direction on the inner groove wall of the first sliding support groove 110, and a clamping groove 321 is provided in a recessed manner on the side of the clamping portion 322 close to the seat 1. Of course, in other embodiments of the present application, the clamping head 111 may also be provided on the clamping portion 322, and a plurality of clamping grooves 321 may be provided on the inner groove wall of the first sliding support groove 110.

[0061] Please refer to the attached Figure 7-8 In some embodiments of the present application, a limiting groove 323 extending in the left and right directions is hollowed out on the groove wall of the third sliding support groove 331 or the adjusting member 320, and the adjusting member 320 and the sliding part 330 are connected by bolts, and the bolts pass through the limiting groove 323.

[0062] In this embodiment, the sliding portion 330 and the adjusting member 320 are connected by bolts, which not only improves the connection strength between the two, but also, as the adjusting member 320 slides left and right, the bolts slide in the limiting slots 323, thereby limiting the sliding range of the adjusting member 320. Thus, the adjustment operation of the adjusting member 320 is improved and smoother.

[0063] Preferably, the upper side of the third sliding support groove 331 is open, and a limiting groove 323 is hollowed out on the adjusting member 320. After the bolt passes through the limiting groove 323, it is fixed to the positioning portion 332, making the installation and removal operations between the adjusting member 320 and the sliding portion 330 easier. Of course, in other embodiments of the present application, the limiting groove 323 can also be hollowed out and set in the groove wall of the third sliding support groove 331, and the bolt passes through the limiting groove 323 and is fixed to the adjusting member 320.

[0064] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means more than three.

[0065] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An aesthetically pleasing adjustment mechanism, characterized in that: include: A seat (1) configured to support a user's buttocks; A chair back assembly (2) configured to support a user's back; A connecting seat (3), the connecting seat (3) comprising a support portion (310) extending in a vertical direction, the left and right sides of the chair back assembly (2) being connected to the upper ends of the two support portions (310), and the lower ends of the support portions (310) being connected to the left and right sides of the chair seat (1) in a front-to-back sliding manner, so that the chair back assembly (2) can slide back and forth relative to the chair seat (1); an adjusting member (320) is connected to the inner side of the connecting seat (3) in a left-to-right sliding manner; A gear adjustment mechanism, the gear adjustment mechanism comprising a clamping head (111) and a clamping slot (321), the clamping head (111) being arranged on one of the adjustment member (320) and the connecting seat (3), and the clamping slot (321) being arranged on the other of the adjustment member (320) and the connecting seat (3); The support portion (310) includes a movable panel (301) located at the bottom, the movable panel (301) is movably arranged on the support portion (310), and the end of the adjusting member (320) away from the seat (1) is connected to the movable panel (301), so that the movable panel (301) can drive the adjusting member (320) to slide left and right; the connecting seat (3) has a switchable locking state and an adjustment state. In the locking state, the clamping head (111) is clamped into the clamping slot (321), and the adjustment The joint member (320) and the seat (1) remain relatively fixed, driving the connecting seat (3) and the seat (1) to remain relatively fixed, and the outer surface of the movable panel (301) and the outer surface of the support portion (310) are connected to form a complete plane; in the adjustment state, the movable panel (301) drives the adjusting member (320) to move in a direction away from the seat (1), so that the clamping head (111) is disengaged from the clamping slot (321), and the connecting seat (3) can slide back and forth relative to the seat (1) again.

2. The aesthetic adjustment mechanism according to claim 1, characterized in that: The lower side of the support portion (310) is recessed to provide a connecting groove (311), the movable panel (301) is arranged in the connecting groove (311), and at least one of the front side, the rear side and the lower side of the connecting groove (311) is opened.

3. The aesthetic adjustment mechanism according to claim 1, characterized in that: The left and right sides of the seat (1) are recessed with first sliding support grooves (110) extending in a front-to-back direction, and the bottom end of the support portion (310) extends in a horizontal direction to form a sliding portion (330), and the sliding portion (330) is slidably connected to the first sliding support grooves (110), so that the connecting seat (3) can slide forward and backward relative to the seat (1).

4. The aesthetic adjustment mechanism according to claim 3, characterized in that: A plurality of second sliding support grooves (120) extending in a front-to-rear direction are provided on the groove wall of the first sliding support groove (110), and the sliding portion (330) is connected to the second sliding support groove (120) by bolts, thereby keeping the sliding portion (330) relatively fixed to the seat (1) in a horizontal direction.

5. The aesthetic adjustment mechanism according to claim 4, characterized in that: The plurality of second sliding support grooves (120) are arranged on the groove wall on the upper side of the first sliding support groove (110), and the lower side of the first sliding support groove (110) is provided with an opening, and the opening is configured for a user to screw in a bolt from the lower side of the sliding portion (330) and connect to the second sliding support groove (120).

6. The aesthetic adjustment mechanism according to claim 5, characterized in that: A cover plate (130) is detachably connected to the lower end of the seat (1), and the cover plate (130) is configured to cover the opening on the lower side of the first sliding support groove (110).

7. The aesthetic adjustment mechanism according to claim 1, characterized in that: The connecting seats (3) on the left and right sides are connected via a connecting plate (140), and the connecting plate (140) is configured to enable the connecting seats (3) on the left and right sides to slide forward and backward synchronously.

8. The aesthetic adjustment mechanism according to claim 7, characterized in that: The seat (1) is a hollow structure, wherein the hollow portion thereof forms a receiving cavity (101), and the connecting plate (140) is arranged in the receiving cavity (101); the left and right sides of the seat (1) are hollowed out to form second sliding support grooves (120) extending in a front-to-back direction, and the connecting seats (3) on the left and right sides are connected to the connecting plate (140) by bolts, and the bolts pass through the second sliding support grooves (120).

9. The aesthetic adjustment mechanism according to claim 1, characterized in that: The bottom end of the support portion (310) extends in a horizontal direction to form a sliding portion (330), and the sliding portion (330) is hollowed out in the left and right directions to form a third sliding support groove (331), and the adjusting member (320) is slidably connected to the sliding portion (330) through the third sliding support groove (331).

10. The aesthetic adjustment mechanism according to claim 9, characterized in that: The bottom of the third sliding support groove (331) is provided with a positioning portion (332) protruding upward, and one end of the adjusting member (320) close to the chair seat (1) is bent downward to form a stepped clamping portion (322), and the clamping groove (321) or the clamping head (111) is provided on the clamping portion (322); an elastic member (333) is provided between the positioning portion (332) and the clamping portion (322), and the elastic member (333) pushes the clamping portion (322), so that the clamping portion (322) always has a tendency to move toward the chair seat (1).

11. The aesthetic adjustment mechanism according to claim 9, characterized in that: A limiting groove (323) extending in a left-right direction is hollowed out on the groove wall of the third sliding support groove (331) or the adjusting member (320), and the adjusting member (320) and the sliding portion (330) are connected by a bolt, and the bolt passes through the limiting groove (323).

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