Adjustable office chair

Abstract

The invention relates to the technical field of office supplies, in particular to an adjustable office chair which comprises a handrail and further comprises a mounting plate, the mounting plate is used for fixedly mounting different functional modules, a sliding groove extending in the length direction of the handrail is formed in the handrail, a sliding rail is arranged on the mounting plate, the sliding rail is arranged in the sliding groove in a sliding mode, and the mounting plate is connected with the mounting plate. Locking structures are arranged on the sliding grooves and the sliding rails and used for limiting and fixing the mounting plate to the handrail. According to the office chair, through sliding fit of the sliding grooves and the sliding rails and the locking structures, a user can freely expand or replace the functional modules according to requirements, and the functional diversity and adaptability of the office chair are remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of office supplies, and in particular to an adjustable office chair. Background Art

[0002] Existing office chairs include armrests, which have a single function and cannot be disassembled or reassembled. Users cannot expand and install functional modules according to actual needs. Existing office chairs are difficult to adapt to the diverse needs of users. Summary of the Invention

[0003] In order to meet the diverse needs of users, the present application provides an adjustable office chair.

[0004] This application provides an adjustable office chair, which adopts the following technical solution: An adjustable office chair includes armrests and a mounting plate, wherein the mounting plate is used for fixed installation of different functional modules, the armrest is provided with a slide groove extending along the length of the armrest, the mounting plate is provided with a slide rail, and the slide rail is slidably arranged in the slide groove, and the slide groove and the slide rail are both provided with a locking structure, and the locking structure is used to limit and fix the mounting plate to the armrest.

[0005] By adopting the above technical solution, the functional modules can be flexibly disassembled from the armrests through the sliding cooperation between the slide groove and the slide rail as well as the locking structure. Users can freely expand or replace functional modules (such as cup holders, storage boards, etc.) according to their needs, which significantly improves the functional diversity and adaptability of the office chair and solves the problem of the single function of traditional armrests.

[0006] Optionally, the length of the slide rail is smaller than the length of the slide slot, and the slide slot is provided with a plurality of locking structures, each of which is arranged along the length direction of the slide slot.

[0007] By adopting the above technical solution, the length of the slide rail is shorter than the slide groove and multiple sets of locking structures are provided, so that the functional module can be flexibly adjusted and fixed in multiple positions on the armrest, so that the functional module can be accurately positioned in sections within the length of the slide groove.

[0008] Optionally, the locking structure includes a locking groove, a locking block and a locking elastic member, the locking groove is opened on the groove wall of the slide groove, the locking groove extends along the width direction of the slide rail, the side wall of the slide rail is opened with a sliding groove extending along the width direction of the slide rail, the locking block is slidably arranged in the sliding groove, the locking elastic member is arranged between the locking block and the bottom wall of the sliding groove, and the locking elastic member is used to drive the locking block to pop out of the sliding groove and insert into the lock slot.

[0009] By adopting the above technical solution, the combined design of the locking block and the locking elastic part allows the locking block to be automatically locked by popping out by the locking elastic part when encountering the locking groove during installation of the functional module. When disassembling, it can be quickly separated by the unlocking operation, which simplifies the module loading and unloading process and improves the operational convenience.

[0010] Optionally, guide slopes are formed on the two opposite side walls of the end portion of the locking block away from the bottom wall of the sliding groove, and the distance between the two guide slopes increases along the direction of the groove bottom wall close to the sliding groove, and the locking block is rotatably arranged in the sliding groove, and the rotation axis of the locking block extends along the width direction of the slide rail, and the locking block is provided with a clamping block on the two opposite side walls of the end portion of the groove away from the bottom wall of the sliding groove, and the clamping block and the guide slopes are spaced apart on the four side walls of the locking block. When the locking block is rotated to the point where the two guide slopes are arranged along the extension direction of the slide groove, the mounting plate is in an unlocked state; when the locking block is rotated to the point where the two clamping blocks are arranged along the extension direction of the slide groove, the clamping block contacts the groove wall of the locking groove, and the mounting plate is in a locked state.

[0011] By adopting the above technical solution, the locking block rotation design cooperates with the guiding bevel and the card block, and in the locked state, the rigid interference between the card block and the lock slot provides high stability, thereby realizing the limited fixation of the mounting plate. When unlocked, the locking block rotates, and when the slide rail moves, the guiding bevel slides into interference with the side wall of the lock slot. The side wall of the lock slot overcomes the elastic force of the locking elastic part and presses the locking block back into the sliding slot, so that the slide rail can move smoothly. When the slide rail moves to the point where the locking block is aligned with each lock slot, the locking block will pop into the lock slot and make a clicking sound, reminding the user that the slide rail can be fixed in this position, thereby further optimizing the user experience.

[0012] The lock member is configured to lock the locking plate, wherein the locking plate is secured on a central portion of the cam face, and the locking plate is adapted to engage the locking plate, wherein the locking plate is engaged with the locking cam and the locking cam.

[0013] By adopting the above technical solution, the unlocking lever is linked with the transmission groove and reset groove of the rotating block. The locking block can be driven to rotate and switch states by linearly pushing the unlocking lever. The transmission path is clear and labor-saving, avoiding complicated operations. The cooperation of the reset groove, the transmission block and the reset elastic part ensures that the unlocking lever automatically resets to the initial state, which is convenient for pushing the unlocking lever next time and improving the continuity of the unlocking and locking actions.

[0014] Optionally, a mounting groove extending along the width direction of the slide rail is provided on the side wall of the rotating block away from the bottom wall of the sliding groove, and a guide groove extending along the width direction of the slide rail is provided on the groove wall of the mounting groove, a sliding rod is provided on the side wall of the locking block close to the bottom wall of the sliding groove, and the sliding rod is slidably set in the mounting groove, and a guide block is provided on the side wall of the end of the sliding rod close to the bottom wall of the mounting groove, and the guide block is elastic and is used to be squeezed and deformed to fit into the guide groove and be slidably set in the guide groove.

[0015] By adopting the above technical solution, the guide block is elastic and is slidably installed in the guide groove, which makes it convenient to install the sliding rod into the installation groove, so that the sliding rod can slide in the installation groove while preventing the sliding rod from falling out of the installation groove. The guide groove constrains the guide block in circumferential rotation, so that the locking block and the rotating block can rotate synchronously, which facilitates installation and improves the durability and stability of the locking structure.

[0016] Optionally, a threaded rod is provided on the rotating block, and a rotating groove for inserting and rotating the threaded rod is opened through the bottom wall of the sliding groove, and a receiving groove connected to the rotating groove is opened on the side wall of the sliding rail away from the opening surface of the locking groove, and the cross-sectional size of the receiving groove is larger than the cross-sectional size of the rotating groove, and a nut is threadedly connected to the threaded rod, and the nut is located in the receiving groove.

[0017] By adopting the above technical solution, by designing the threaded rod and nut as well as the rotating groove and the receiving groove for threaded connection, it is convenient to rotatably install the rotating block on the slide rail, and the processing technology of the threaded rod and nut is mature, which facilitates production, processing or procurement, thereby reducing production costs.

[0018] Optionally, a telescopic slot extending along the length direction of the slide rail is provided on the unlocking rod, the transmission block is slidably arranged in the telescopic slot, and an adjusting elastic member is provided between the transmission block and the bottom wall of the telescopic slot, and the adjusting elastic member is used to drive the transmission block to pop out of the telescopic slot.

[0019] By adopting the above technical solution, the combination of the telescopic slot and the adjusting elastic part enables the transmission block to have an elastic buffering function during the transmission process, reducing the mechanical impact when the unlocking lever is operated, while adapting to the changes in the inclined path of the transmission slot, ensuring smooth and reliable transmission action and extending the service life of the unlocking mechanism.

[0020] Optionally, a brush is provided on the side wall of the slide rail.

[0021] By adopting the above technical solution, the brushes installed on the side walls of the slide rails can clean the dust or debris in the slide groove in real time, preventing foreign objects from getting stuck in the slide rails and affecting the sliding smoothness, reducing maintenance frequency, and ensuring the long-term stable operation of the functional module.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the sliding cooperation and locking structure between the slide groove and the slide rail, users can freely expand or replace functional modules according to their needs, which significantly improves the functional diversity and adaptability of the office chair; 2. When the slide rail moves until the locking block aligns with each locking slot, the locking block will pop into the locking slot with a click, reminding the user that the slide rail can be fixed in this position, further improving the user experience; 3. The guide block is elastic, which makes it easy to install the sliding rod into the installation slot, so that the sliding rod can slide in the installation slot while preventing the sliding rod from falling out of the installation slot, and enables the locking block and the rotating block to rotate synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of this application.

[0024] Figure 2 It is a top sectional view of the slide rail and handrail in this application.

[0025] Figure 3 This is an exploded view of the locking structure, slide rails and handrails in this application.

[0026] Explanation of the accompanying drawings: 1. Armrest; 11. Slide groove; 111. Unlocking hole; 2. Mounting plate; 21. Slide rail; 211. Sliding groove; 212. Unlocking groove; 213. Guide groove; 214. Rotating groove; 215. Accommodating groove; 3. Locking structure; 31. Locking groove; 32. Locking block; 321. Guide slope; 322. Block; 323. Sliding rod; 324. Guide block; 325. Extrusion slope; 33. Locking elastic member; 34. Unlocking rod; 341. Transmission block; 342. Telescopic groove; 35. Reset elastic member; 36. Rotating block; 361. Transmission groove; 362. Reset groove; 363. Mounting groove; 364. Guide groove; 365. Threaded rod; 4. Nut; 5. Adjusting elastic member; 6. Brush; 7. Fixing block. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] The present application discloses an adjustable office chair. Figure 1, including an armrest 1 and a mounting plate 2, the mounting plate 2 is used for fixed installation of different functional modules. A slide groove 11 extending along the length direction of the armrest 1 is provided on the upper surface of the armrest 1, and the slide groove 11 passes through the opposite side walls of the armrest 1. A slide rail 21 is integrally formed on the bottom surface of the mounting plate 2, and the slide rail 21 is slidably installed in the slide groove 11. The cross-sectional shape of the slide rail 21 and the slide groove 11 are both "T"-shaped, so that the slide groove 11 limits the slide rail 21 in the vertical direction. A locking structure 3 is provided on both the slide groove 11 and the slide rail 21, and the locking structure 3 is used to limit and fix the mounting plate 2 on the armrest 1.

[0029] Reference Figure 1 The length of the slide rail 21 is smaller than the length of the slide slot 11. The locking structure 3 includes a locking slot 31 formed on the wall of the slide slot 11. The locking slot 31 extends along the width of the slide slot 11. There are multiple locking slots 31, each of which is evenly distributed along the length of the slide slot 11.

[0030] Reference Figure 2 The locking structure 3 also includes a locking block 32 and a locking spring 33. A sliding slot 211 is defined on the sidewall of the slide rail 21 near the locking slot 31. The sliding slot 211 extends along the width of the slide rail 21, and the locking block 32 is slidably mounted within the sliding slot 211. The locking spring 33 is a compression spring that is used to drive the locking block 32 out of the sliding slot 211 and into the locking slot 31.

[0031] Reference Figure 2 and Figure 3 The locking block 32 is rotatably mounted within the sliding groove 211. Guide slopes 321 are formed on the two opposite sidewalls of the end of the locking block 32, away from the bottom wall of the sliding groove 211, through a chamfering process. The distance between the two guide slopes 321 increases as it approaches the bottom wall of the sliding groove 211. Clamping blocks 322 are integrally formed on the other two opposite sidewalls of the end of the locking block 32, away from the bottom wall of the sliding groove 211. That is, the two guide slopes 321 and the two clamping blocks 322 are spaced apart on the four sidewalls of the locking block 32.

[0032] Reference Figure 2 and Figure 3 When the locking block 32 is rotated so that the two guiding slopes 321 are aligned along the extension direction of the slide groove 11, the slide rail 21 is in the unlocked state. When the slide rail 21 moves, the groove wall of the locking groove 31 slides against the guiding slopes 321, and the groove wall of the locking groove 31 presses the locking block 32 back into the sliding groove 211. The locking block 32 exits the locking groove 31, and the slide rail 21 can now slide smoothly along the slide groove 11. When the locking block 32 is rotated so that the two locking blocks 322 are aligned along the extension direction of the slide groove 11, the slide rail 21 is in the locked state. When the slide rail 21 moves, the locking block 322 contacts the groove wall of the locking groove 31, and the slide rail 21 cannot move.

[0033] Reference Figure 2A sliding rod 323 is integrally formed on the side wall of the locking block 32 near the bottom wall of the sliding groove 211. A guide block 324 is fixedly mounted on the outer circumference of the end of the sliding rod 323 away from the locking block 32. The guide block 324 is elastic. An extrusion slope 325 is formed on the guide block 324. The extrusion slope 325 is inclined in a direction that moves away from the axis of the sliding rod 323 as it moves closer to the locking block 32.

[0034] Reference Figure 2 The locking structure 3 further includes a rotating block 36 rotatably mounted in the sliding slot 211. The rotating axis of the rotating block 36 is parallel to the extending direction of the sliding slot 211. The rotating block 36 is located on the side of the locking block 32 near the bottom wall of the sliding slot 211. A mounting slot 363 extending along the extending direction of the sliding slot 211 is defined on the side wall of the rotating block 36 near the locking block 32. A guide slot 364 extending along the extending direction of the sliding slot 211 is defined on the side wall of the mounting slot 363. The sliding rod 323 is slidably mounted in the mounting slot 363. When the sliding rod 323 is installed in the mounting slot 363, the side wall of the rotating block 36 and the groove wall of the mounting slot 363 press against the extrusion slope 325 of the guide block 324, causing the guide block 324 to deform until it engages with the guide slot 364, whereupon the guide block 324 is slidably mounted. The locking elastic member 33 is press-fitted between the locking block 32 and the rotating block 36 , and the locking elastic member 33 is sleeved on the sliding rod 323 .

[0035] Reference Figure 2 The bottom wall of the sliding groove 211 is provided with a rotation groove 214 extending along the extension direction of the sliding groove 211. The rotation groove 214 penetrates the side wall of the slide rail 21 on the side away from the opening of the lock groove 31. A receiving groove 215 is provided on the side wall of the slide rail 21 on the side away from the opening of the lock groove 31. The receiving groove 215 is connected to the rotation groove 214, and the radial dimension of the receiving groove 215 is larger than the radial dimension of the rotation groove 214. A threaded rod 365 is integrally formed on the side wall of the rotating block 36 away from the locking block 32. The threaded rod 365 is rotatably mounted in the rotation groove 214. A nut 4 is threadedly connected to the threaded rod 365 and rotatably mounted in the receiving groove 215. The radial dimension of the receiving groove 215 is larger than the radial dimension of the nut 4, which facilitates screwing the nut 4 onto the threaded rod 365.

[0036] Reference Figure 3 Four sets of transmission grooves 361 and reset grooves 362 are formed on the outer circumference of the rotating block 36. The transmission grooves 361 and reset grooves 362 are interconnected and spaced apart around the rotation axis of the rotating block 36. The reset grooves 362 extend parallel to the rotation axis of the rotating block 36. The transmission grooves 361 extend at an angle and connect with two adjacent reset grooves 362, so that the transmission grooves 361 and the two adjacent reset grooves 362 form a "Z" shape.

[0037] Reference Figure 2 The locking structure 3 further includes an unlocking lever 34 and a resilient member 35. An unlocking slot 212 is defined on the sidewall of the slide rail 21, away from the opening of the sliding slot 211. The unlocking slot 212 extends parallel to the extension direction of the sliding slot 211. The unlocking lever 34 is slidably mounted in the unlocking slot 212. The resilient member 35 is a compression spring, press-fitted between the unlocking lever 34 and the bottom wall of the unlocking slot 212. The resilient member 35 is used to drive the unlocking lever 34 toward the bottom wall of the unlocking slot 212.

[0038] Reference Figure 2 and Figure 3 A guide groove 213 is provided on the side wall of the unlocking groove 212 near the sliding groove 211, and is connected to the sliding groove 211. The groove width and groove height of the guide groove 213 are both smaller than the groove width and groove height of the unlocking groove 212, preventing the unlocking rod 34 from entering the guide groove 213, ensuring that the unlocking rod 34 always slides in the unlocking groove 212. A fixed block 7 is fixedly installed on the side wall of the unlocking rod 34, and the fixed block 7 is slidably installed in the guide groove 213. A telescopic groove 342 is provided on the side wall of the fixed block 7 away from the unlocking rod 34, extending in a direction perpendicular to the sliding direction of the unlocking rod 34. A transmission block 341 is slidably installed in the telescopic groove 342. An adjusting elastic member 5 is pressed between the transmission block 341 and the bottom wall of the telescopic groove 342. The adjusting elastic member 5 is a compression spring, and the adjusting elastic member 5 is used to drive the transmission block 341 to slide in a direction away from the telescopic groove 342. The transmission block 341 is slidably installed in the guide groove 213, the transmission groove 361 and the reset groove 362, and the unlocking rod 34 slides to drive the rotating block 36 to rotate.

[0039] Reference Figure 1 and Figure 2 A plurality of unlocking holes 111 corresponding to the lock slots 31 are provided on the side wall of the armrest 1. The unlocking holes 111 extend along the width direction of the slide slot 11. The unlocking holes 111 are evenly distributed along the extension direction of the slide slot 11. The unlocking holes 111 are connected to the slide slot 11 and the unlocking slot 212.

[0040] Reference Figure 3 A brush 6 is fixedly installed on the bottom surface of the slide rail 21. When the slide rail 21 slides in the slide groove 11, the brush 6 cleans the slide groove 11.

[0041] The implementation principle of an adjustable office chair according to an embodiment of the present application is as follows: when a user needs to install a functional module, the user selects the appropriate functional module, first observes the locking block 32 on the slide rail 21, and determines whether the two guiding inclined surfaces 321 on the locking block 32 are arranged in the horizontal direction. If not, the user pushes the unlocking lever 34, which drives the rotating block 36 and the locking block 32 to rotate through the transmission block 341, causing the locking block 32 to rotate 90 degrees until the two guiding inclined surfaces 321 are arranged in the horizontal direction. The slide rail 21 on the mounting plate 2 is installed in the slide groove 11. The slide rail 21 slides in the slide groove 11. The user will hear a click sound, at which time the locking block 32 pops into the lock groove 31. The user can judge from this sound that the mounting plate 2 can now be fixed. After the user slides the slide rail 21 to the appropriate position, he or she inserts his or her hand or a tool into the unlocking hole 111 and pushes the unlocking lever 34. The unlocking lever 34 drives the rotating block 36 and the locking block 32 to rotate 90 degrees through the transmission block 341, so that the two blocking blocks 322 are arranged in the horizontal direction. At this time, if the slide rail 21 is moved, the blocking block 322 contacts the side wall of the locking groove 31, limiting the slide rail 21, thereby limiting and fixing the mounting plate 2 on the armrest 1.

[0042] In this application, through the sliding cooperation between the slide groove 11 and the slide rail 21 and the locking structure 3, users can freely expand or replace functional modules according to their needs, which significantly improves the functional diversity and adaptability of the office chair.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An adjustable office chair comprising armrests (1), characterized in that: The utility model further comprises a mounting plate (2), wherein the mounting plate (2) is used for fixing and installing different functional modules, the armrest (1) is provided with a slide groove (11) extending along the length direction of the armrest (1), the mounting plate (2) is provided with a slide rail (21), the slide rail (21) is slidably arranged in the slide groove (11), the slide groove (11) and the slide rail (21) are both provided with a locking structure (3), and the locking structure (3) is used for limiting and fixing the mounting plate (2) on the armrest (1).

2. The adjustable office chair according to claim 1, characterized in that: The length of the slide rail (21) is smaller than the length of the slide groove (11), and a plurality of locking structures (3) are provided on the slide groove (11), and each of the locking structures (3) is arranged along the length direction of the slide groove (11).

3. The adjustable office chair according to claim 2, characterized in that: The locking structure (3) includes a locking groove (31), a locking block (32) and a locking elastic member (33), wherein the locking groove (31) is provided on the groove wall of the slide groove (11), and the locking groove (31) extends along the width direction of the slide rail (21), and a sliding groove (211) extending along the width direction of the slide rail (21) is provided on the side wall of the slide rail (21), and the locking block (32) is slidably arranged in the sliding groove (211), and the locking elastic member (33) is provided between the locking block (32) and the groove bottom wall of the sliding groove (211), and the locking elastic member (33) is used to drive the locking block (32) to pop out of the sliding groove (211) and insert into the locking groove (31).

4. The adjustable office chair according to claim 3, characterized in that: The locking block (32) is provided with guiding inclined surfaces (321) on both opposite side walls of the end portion of the groove away from the bottom wall of the sliding groove (211), and the distance between the two guiding inclined surfaces (321) increases in the direction of the groove bottom wall close to the sliding groove (211). The locking block (32) is rotatably arranged in the sliding groove (211), and the rotation axis of the locking block (32) extends along the width direction of the slide rail (21). The locking block (32) is provided with guiding inclined surfaces (321) on both opposite side walls of the end portion of the groove away from the bottom wall of the sliding groove (211). A clamping block (322) is provided, and the clamping block (322) and the guide inclined surface (321) are spaced apart and distributed on the four side walls of the locking block (32). When the locking block (32) is rotated until the two guide inclined surfaces (321) are arranged along the extension direction of the slide groove (11), the mounting plate (2) is in an unlocked state. When the locking block (32) is rotated until the two clamping blocks (322) are arranged along the extension direction of the slide groove (11), the clamping block (322) contacts the groove wall of the locking groove (31), and the mounting plate (2) is in a locked state.

5. The adjustable office chair according to claim 4, characterized in that: The locking structure (3) further comprises an unlocking rod (34), a reset elastic member (35) and a rotating block (36) rotatably arranged in the sliding groove (211), an unlocking groove (212) extending along the width direction of the sliding rail (21) is provided on the side wall of the sliding rail (21), the unlocking rod (34) is slidably arranged in the unlocking groove (212), the reset elastic member (35) is arranged between the unlocking rod (34) and the bottom wall of the unlocking groove (212), a guide groove (213) communicating with the sliding groove (211) is provided on the groove wall of the unlocking groove (212), a transmission block (341) is provided on the unlocking rod (34), and four groups of transmission grooves (361) and reset grooves (362) communicating with each other are provided on the outer peripheral surface of the rotating block (36), and each group of transmission grooves (361) and reset grooves (362) are connected to each other. 2) corresponding to different guide inclined surfaces (321) and card blocks (322), the transmission groove (361) and the reset groove (362) are spaced apart, the transmission block (341) is slidably arranged in the guide groove (213), the transmission groove (361) and the reset groove (362), the transmission groove (361) extends obliquely along the outer peripheral surface of the rotating block (36), the transmission block (341) is used to slide in the transmission groove (361) and drive the rotating block (36) to rotate, the reset groove (362) extends along the width direction of the slide rail (21), the locking elastic member (33) is arranged between the locking block (32) and the rotating block (36), the rotating block (36) drives the locking block (32) to rotate, and an unlocking hole (111) is opened through the groove wall of the slide groove (11) and is connected to the unlocking groove (212).

6. The adjustable office chair according to claim 5, characterized in that: The rotating block (36) is provided with a mounting groove (363) extending along the width direction of the slide rail (21) on the side wall of the groove away from the bottom wall of the sliding groove (211), and a guide groove (364) extending along the width direction of the slide rail (21) is provided on the groove wall of the mounting groove (363). The locking block (32) is provided with a sliding rod (323) on the side wall of the groove bottom wall close to the sliding groove (211), and the sliding rod (323) is slidably set in the mounting groove (363). The side wall of the sliding rod (323) is close to the end of the groove bottom wall of the mounting groove (363) and is provided with a guide block (324). The guide block (324) is elastic and is used to be squeezed and deformed to be inserted into the guide groove (364) and slidably set in the guide groove (364).

7. The adjustable office chair according to claim 5, characterized in that: The rotating block (36) is provided with a threaded rod (365), and a rotating groove (214) is provided on the bottom wall of the sliding groove (211) for the threaded rod (365) to be inserted and rotated. A receiving groove (215) is provided on the side wall of the slide rail (21) away from the opening surface of the lock groove (31) and connected to the rotating groove (214). The cross-sectional size of the receiving groove (215) is larger than the cross-sectional size of the rotating groove (214). A nut (4) is threadedly connected to the threaded rod (365), and the nut (4) is located in the receiving groove (215).

8. The adjustable office chair according to claim 5, characterized in that: The unlocking rod (34) is provided with a telescopic slot (342) extending along the length direction of the slide rail (21), the transmission block (341) is slidably arranged in the telescopic slot (342), and an adjusting elastic member (5) is provided between the transmission block (341) and the bottom wall of the telescopic slot (342), and the adjusting elastic member (5) is used to drive the transmission block (341) to pop out of the telescopic slot (342).

9. The adjustable office chair according to claim 1, characterized in that: A brush (6) is provided on the side wall of the slide rail (21).

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