Chair seat and office chair

Abstract

The utility model discloses a chair seat which comprises a seat shell, a sliding groove is formed in the bottom side of the seat shell, an installation opening communicated with the sliding groove is formed in one side of the seat shell, a receding opening is formed in the position, close to the groove bottom of the installation opening, of the sliding groove, and a limiting piece capable of protruding downwards or being contained in the receding opening upwards is arranged in the seat shell; the base plate is connected into the sliding groove in a sliding mode, when the limiting piece downwards protrudes out of the receding opening, the base plate can be limited to be separated from the sliding groove from the installation opening, a locking assembly is arranged between the base plate and the base shell, and the locking assembly can lock or release sliding of the base plate in the sliding groove. According to the utility model, the convenience of integral assembly is improved, the requirements of people on the sliding adjustment of the chair seat during use can be met, and the practicability is stronger.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of furniture, in particular to a chair seat and office chair. BACKGROUND

[0002] In the present office chair, chair seat and seat frame are usually split structure, before use, need to use screw etc. connecting piece to connect each other chair seat and seat frame, installation is more troublesome, and after chair seat is installed in seat frame, the position of both is relatively fixed, the position of chair seat itself is not adjustable, the flexibility of use is lower, it is difficult to meet people's use demand. Therefore, urgently needed a kind of chair seat which can be conveniently assembled and has higher flexibility. SUMMARY

[0003] The utility model aims at providing a kind of chair seat and office chair to solve one or more technical problems existing in prior art, at least provide a kind of beneficial selection or create conditions.

[0004] The utility model solves the technical problem of the solution:

[0005] A kind of chair seat, including: seat shell, bottom side is provided with sliding slot, the side of the seat shell is provided with the installation port that is connected to the sliding slot, the slot bottom position of the sliding slot is provided with the avoiding port close to the installation port, the seat shell is provided with the limiting piece that can be downwardly protruding or upwardly received in the avoiding port;Bottom disc is slidably connected in the sliding slot, the limiting piece can limit the bottom disc from the installation port to separate out of the sliding slot when being downwardly protruding the avoiding port, locking assembly is arranged between the bottom disc and the seat shell, and the locking assembly can lock or release the sliding of the bottom disc in the sliding slot.

[0006] The technical scheme at least has the following beneficial effects: bottom disc is used to connect to the seat frame of external device, before production and factory, bottom disc and seat frame can be directly installed and fixed, and seat shell and bottom disc are in mutual separation state, it is convenient to pack and transport as a whole, before use, seat shell and bottom disc are mutually assembled, specifically, limiting piece is first received in avoiding port upwardly, at this time, bottom disc is slidably connected in sliding slot from installation port, when bottom disc passes avoiding port, limiting piece is again protruded in avoiding port downwardly, at this time, the assembly of bottom disc and seat shell can be completed, limiting piece can limit bottom disc to separate out from installation port, and the area formed between limiting piece and the side of sliding slot away from installation port can be used for the sliding of bottom disc, when using, seat shell can be slid relative to bottom disc and adjusted, after adjustment, bottom disc is locked in sliding slot using locking assembly, so that the convenience of overall assembly is improved, and the demand of people to chair seat sliding adjustment when using can be met, for example, seat shell can be slid to adjust the distance between backrest or adjust the distance between table, etc., and the practicality is stronger.

[0007] As a further improvement of the above technical solution, a fixed plate is connected to a position above the mounting port in the seat shell, the limiting piece is rotationally connected to the seat shell at a side close to the mounting port, a first elastic piece is connected between the top side of the limiting piece and the bottom side of the fixed plate, the first elastic piece has a tendency to press the limiting piece downward and make the bottom of the limiting piece protrude out of the avoiding port, and the bottom surface of the limiting piece extends downward in a direction away from the mounting port. Since the limiting piece is rotationally connected to the seat shell, the limiting piece is realized to protrude out of or enter the avoiding port by reciprocating rotation. In a natural state, the first elastic piece presses the limiting piece downward, so that the bottom of the limiting piece keeps protruding downward out of the avoiding port, thereby preventing the chassis from being pulled out of the sliding groove. When the chassis is loaded into the sliding groove, since the bottom surface of the limiting piece extends downward in a direction away from the mounting port, when the chassis abuts against the bottom surface of the limiting piece, the limiting piece can be pushed upward into the avoiding port, and the first elastic piece is elastically deformed. In this way, the chassis can be directly loaded into the sliding groove quickly and conveniently, and the overall assembly efficiency is further improved. After the chassis passes the limiting piece, the first elastic piece elastically restores to press the limiting piece downward, so that the bottom of the limiting piece protrudes out of the avoiding port again.

[0008] As a further improvement of the above technical solution, the locking assembly comprises a lock rod and lock blocks, a plurality of lock blocks are arranged at a side of the chassis along the length direction of the sliding groove, the lock rod is slidingly connected to a side of the seat shell, at least one lock slot is arranged on the side of the lock rod opposite to the chassis, and the lock rod can drive the lock blocks to enter or exit the corresponding lock slot when sliding. The lock slot on the lock rod and the lock blocks on the chassis are matched with each other, so that the sliding of the chassis in the sliding groove is limited. When the position of the seat shell needs to be adjusted, the lock rod is slid in a direction away from the chassis, so that the lock blocks exit the lock slot. After the matching limitation of the lock rod and the lock blocks is removed, the seat shell can be slid relative to the chassis for adjustment. When the seat shell is adjusted to a suitable use position, the lock rod is slid in a direction close to the chassis, so that the lock slot on the lock rod and the lock blocks opposite to each other are matched with each other. Through the matching limitation of the lock rod and the lock blocks, the position of the chassis can be re-locked.

[0009] As a further improvement of the above technical solution, a second elastic piece is connected between the lock rod and the seat shell, and the second elastic piece has a tendency to press the lock rod toward the lock blocks. In a natural state, the elastic force provided by the second elastic piece can press the lock rod toward the lock blocks, so that the lock blocks can keep matched with the lock slot, thereby being beneficial to keeping the stability of the locking of the seat shell. When the seat shell needs to be adjusted, the lock rod is slid in a direction away from the chassis, so that the lock blocks are separated from the lock slot by overcoming the elastic deformation force of the second elastic piece. After the adjustment is completed, the elastic force of the second elastic piece can drive the lock rod to reset after the pulling force on the lock rod is removed.

[0010] As a further improvement of the above technical solution, the end of the lock rod away from the bottom plate is connected with a handle. When the lock rod needs to be moved, the lock rod can be pulled by the handle, which better applies force to the lock rod, further improving the operation convenience and use experience.

[0011] As a further improvement of the above technical solution, a receiving groove capable of accommodating the handle is arranged on the outer side of the seat shell. The handle is accommodated in the receiving groove, reducing the exposure of the seat shell locking transmission structure, which is conducive to improving the overall appearance and better protecting the handle.

[0012] As a further improvement of the above technical solution, recessed portions are formed on both sides of the sliding groove, and the two recessed portions are respectively communicated with the mounting openings, and the two sides of the bottom plate respectively extend into the recessed portions. When the bottom plate is installed into the sliding groove, the two sides of the bottom plate are respectively inserted into the recessed portions on both sides of the sliding groove. At this time, the recessed portions of the sliding groove can support the bottom plate, achieving the limitation of the bottom plate in the up-down direction. The overall structure is simple, and the connection structure is reliable and stable.

[0013] As a further improvement of the above technical solution, a limiting frame is connected to the groove bottom position in the middle of the sliding groove, and the bottom plate is recessed downward at a position corresponding to the limiting frame and forms a limiting through groove which avoids the limiting frame. The limiting through groove formed by the recessed bottom plate can enhance the structural strength of the entire bottom plate, and better prevent the bottom plate from bending and deforming when subjected to force in the length direction. In addition, the bottom plate cooperates with the limiting frame at the groove bottom position in the middle of the sliding groove through the limiting through groove, so that the bottom plate has structural limitation between the sliding groove at both sides and the middle position, further improving the stability of the bottom plate in the sliding groove.

[0014] As a further improvement of the above technical solution, a seat cushion is connected to the top side of the seat shell. The seat cushion can provide elastic buffering function to improve the use comfort of the user.

[0015] An office chair comprises a seat frame and the above-mentioned seat, and the seat frame is connected to the bottom side of the bottom plate.

[0016] The technical solution has at least the following advantages: in the office chair, the seat frame and the bottom plate of the seat are first fixedly connected during production, and the seat shell and the bottom plate are separated from each other for packaging and transportation. Before use, the bottom plate is installed into the sliding groove of the seat shell. During use, the seat shell can be slid relative to the bottom plate for adjustment. After adjustment, the bottom plate is locked in the sliding groove by the locking assembly. In this way, the overall assembly convenience is improved, and the demand for sliding adjustment of the seat during use can be met, such as sliding the seat shell to adjust the distance between the seat shell and the backrest, or to adjust the distance between the seat shell and the table, etc., which is more practical. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly describe the drawings needed in the embodiment description. Obviously, the described drawings are only a part of the embodiments of the present application, not all the embodiments, and the person skilled in the art can also obtain other design schemes and drawings according to these drawings without creative labor.

[0018] Figure 1 is a perspective view of the chair seat of the present application.

[0019] Figure 2 is an exploded structural schematic view of the present application.

[0020] Figure 3 is a schematic view of the internal structure of the chair seat of the present application.

[0021] Figure 4 is Figure 3 A-A sectional structural schematic view of the present application.

[0022] In the drawings: 100 - seat shell, 110 - sliding groove, 111 - inner recess, 120 - mounting port, 130 - limiting piece, 131 - first elastic piece, 140 - fixed plate, 150 - limiting frame, 200 - base plate, 210 - limiting through slot, 310 - lock rod, 320 - lock block, 330 - second elastic piece, 340 - handle, 400 - seat cushion. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0025] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0026] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood broadly, and the skilled person in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0027] Refer to Figure 1 With Figure 2 A chair seat, including seat shell 100 and bottom disc 200, wherein the bottom side of seat shell 100 is provided with chute 110, one side of seat shell 100 is provided with installation port 120 communicated with chute 110, the slot bottom position of chute 110 close to installation port 120 is provided with avoiding port, the limiting piece 130 that can be protruded downward or retracted upward in avoiding port is arranged in seat shell 100;Bottom disc 200 is slidably connected in chute 110, when limiting piece 130 protrudes downward in avoiding port, it can limit that bottom disc 200 is separated from installation port 120 and comes out from chute 110, of course, when limiting piece 130 is retracted upward in avoiding port, bottom disc 200 can be separated from installation port 120 and come out from chute 110, locking assembly is arranged between bottom disc 200 and seat shell 100, and the locking assembly can lock or release the sliding of bottom disc 200 in chute 110.

[0028] As can be known from the above, bottom disc 200 is used to be connected to the seat frame of external device, before production and factory, bottom disc 200 and seat frame can be directly installed and fixed, and seat shell 100 and bottom disc 200 are in the state of separation, which is convenient for overall packaging and transportation, before use, seat shell 100 and bottom disc 200 are assembled with each other, specifically, limiting piece 130 is first retracted upward in avoiding port, at this time, bottom disc 200 is slidably connected in chute 110 from installation port 120, when bottom disc 200 passes avoiding port, limiting piece 130 is protruded downward in avoiding port, at this time, the assembly of bottom disc 200 and seat shell 100 can be completed, bottom disc 200 is limited to be separated from installation port 120 by limiting piece 130, and the area formed between limiting piece 130 and the side of chute 110 far from installation port 120 can be used for the sliding of bottom disc 200, when used, seat shell 100 can be slid relative to bottom disc 200 to adjust, after adjustment, bottom disc 200 is locked in chute 110 by locking assembly, so that the convenience of overall assembly is improved, and the demand of people for chair seat sliding adjustment when used can be met, for example, seat shell 100 can be slid to adjust the distance between backrest or the distance between table, and the practicability is stronger.

[0029] The mode of the limiting piece 130 entering and exiting the avoiding opening is various, for example, a transmission structure that can drive the limiting piece 130 to move up and down is arranged in the seat shell 100, or the limiting piece 130 is directly movably installed at a position of the seat shell 100 opposite to the avoiding opening, when the limiting piece 130 is pushed upward, the limiting piece 130 can be pushed into the avoiding opening, when the pushing force on the limiting piece 130 is removed, the limiting piece 130 falls out of the avoiding opening. In the embodiment, a fixed plate 140 is connected to a position above the mounting opening 120 in the seat shell 100, one side of the limiting piece 130 close to the mounting opening 120 is rotatably connected to the seat shell 100, a first elastic piece 131 is connected between the top side of the limiting piece 130 and the bottom side of the fixed plate 140, the first elastic piece 131 has a tendency to downwardly press the limiting piece 130 and make the bottom of the limiting piece 130 protrude out of the avoiding opening, the bottom surface of the limiting piece 130 extends downwardly in a direction away from the mounting opening 120, in actual application, the first elastic piece 131 can be a spring, a torsion spring, rubber or other structure that can produce elastic deformation, the top of the limiting piece 130 has a structure that can abut against the bottom side in the seat shell 100, to prevent the first elastic piece 131 from pressing the limiting piece 130 downwardly out of the avoiding opening.

[0030] In the embodiment, the limiting piece 130 is rotatably connected to the seat shell 100, at this time, the limiting piece 130 is realized by reciprocating rotation to protrude out of or enter the avoiding opening, in the natural state, the first elastic piece 131 downwardly presses the limiting piece 130, so that the bottom of the limiting piece 130 keeps protruding downwardly out of the avoiding opening, to achieve the function of preventing the chassis 200 from being separated from the sliding groove 110, when the chassis 200 is installed into the sliding groove 110, since the bottom surface of the limiting piece 130 extends downwardly in a direction away from the mounting opening 120, when the chassis 200 abuts against the bottom surface of the limiting piece 130, the limiting piece 130 can be pushed upwardly into the avoiding opening, and the first elastic piece 131 is elastically deformed, so that the chassis 200 can be directly installed into the sliding groove 110 quickly and conveniently, and the overall assembly efficiency is further improved, when the chassis 200 passes through the limiting piece 130, the first elastic piece 131 elastically restores to downwardly press the limiting piece 130, so that the bottom of the limiting piece 130 protrudes out of the avoiding opening again.

[0031] The locking assembly is mainly used for locking the chassis 200 in the sliding groove 110 of the seat shell 100, and the structure form is various, for example, a screw rod is threadedly connected to the outside of the seat shell 100, by adjusting the depth of the screw rod, the end of the screw rod abuts against the outside of the chassis 200, so that the chassis 200 is pressed and positioned, when the end of the screw rod is separated from the chassis 200, the chassis 200 is unlocked, and in the embodiment, as shown in the figure, a locking plate 150 is arranged in the seat shell 100, the locking plate 150 is movably connected to the seat shell 100, and the locking plate 150 is arranged in the avoiding opening, the locking plate 150 is arranged in the avoiding opening, and the locking plate 150 is arranged in the avoiding opening. Figure 3 and Figure 4As shown, the locking assembly includes a locking rod 310 and locking blocks 320, the locking blocks 320 are arranged in plurality on one side of the chassis 200 along the length direction of the sliding groove 110, the locking rod 310 is slidingly connected to one side of the seat shell 100, and at least one locking slot is arranged on the side of the locking rod 310 opposite to the chassis 200, the number of the locking slot can be one, two or three, etc., the locking rod 310 can drive the locking blocks 320 to enter or exit the corresponding locking slot when sliding, and of course, when the number of the locking slot is more than one, for example, two, two locking blocks 320 on one side of the chassis 200 will be matched and connected in two locking slots. By matching the locking slot on the locking rod 310 with the locking block 320 on the chassis 200, the sliding of the chassis 200 in the sliding groove 110 can be limited, when it is necessary to adjust the position of the seat shell 100, the locking rod 310 is slid in the direction away from the chassis 200, so that the locking block 320 exits the locking slot, after removing the matching restriction of the two, the seat shell 100 can slide and adjust relative to the chassis 200, when adjusting to the appropriate use position, the locking rod 310 is slid in the direction close to the chassis 200, so that the locking slot on the locking rod 310 matches the locking block 320 opposite to it, and through the matching restriction of the two, the position of the chassis 200 can be re-locked.

[0032] In order to better maintain the matching state of the locking block 320 and the locking slot, in the embodiment, a second elastic member 330 is connected between the locking rod 310 and the seat shell 100, the second elastic member 330 has a tendency to press the locking rod 310 towards the locking block 320, and the second elastic member 330 can be a spring, a torsion spring or a rubber structure that can produce elastic deformation. In the natural state, the elastic force provided by the second elastic member 330 can press the locking rod 310 towards the locking block 320, so that the locking block 320 can maintain the matching state with the locking slot, thereby facilitating the stability of the locking of the seat shell 100, when it is necessary to adjust the seat shell 100, the locking rod 310 is slid in the direction away from the chassis 200, at this time, the elastic deformation force of the second elastic member 330 needs to be overcome, so that the locking block 320 is separated from the locking slot, after the adjustment is completed, the elastic force of the second elastic member 330 restores to drive the locking rod 310 to reset.

[0033] In some embodiments, a handle 340 is connected to one end of the locking rod 310 away from the chassis 200. When the locking rod 310 needs to be moved, the handle 340 can be used to pull the locking rod 310, which better applies force to the locking rod 310, and further improves the operation convenience and use experience.

[0034] Further, the seat shell 100 is provided with a receiving groove capable of accommodating the handle 340. The handle 340 is accommodated in the receiving groove, which reduces the exposure of the locking transmission structure of the seat shell 100, improves the overall appearance, and better protects the handle 340. In actual application, when the handle 340 is pulled away from the chassis 200, the handle 340 can be separated from the receiving groove.

[0035] When the chassis 200 is connected with the sliding groove 110, in order to prevent the seat shell 100 from being separated from the chassis 200 in the up-down direction, a separation prevention structure can be arranged between the seat shell 100 and the chassis 200, for example, a dovetail rail and dovetail groove matched structure is arranged between the top side of the chassis 200 and the groove bottom of the sliding groove 110. In the embodiment, the two sides of the sliding groove 110 are respectively formed with recessed portions 111, the two recessed portions 111 are respectively communicated with the mounting openings 120, and the two sides of the chassis 200 respectively extend into the recessed portions 111. When the chassis 200 is mounted into the sliding groove 110, the two sides of the chassis 200 are respectively inserted into the recessed portions 111 on the two sides of the sliding groove 110. At this time, the recessed portions 111 of the sliding groove 110 can support the chassis 200, limit the chassis 200 in the up-down direction, and the overall structure is simple, and the connection structure is reliable and stable.

[0036] The chassis 200 can be a flat plate structure, and in order to enhance the stress stability, in the embodiment, the middle groove bottom of the sliding groove 110 is connected with a limiting frame 150, and the position corresponding to the limiting frame 150 of the chassis 200 is recessed downward and formed with a limiting through groove 210 avoiding the limiting frame 150. The limiting through groove 210 formed by the recessed chassis 200 can enhance the structural strength of the entire chassis 200, and better prevent the chassis 200 from being easily bent and deformed when stressed in the length direction. In addition, the chassis 200 cooperates with the limiting frame 150 at the middle groove bottom of the sliding groove 110 through the limiting through groove 210, so that the chassis 200 has structural limitation between the two sides and the middle of the sliding groove 110, further improving the stability of the chassis 200 in the sliding groove 110.

[0037] The top surface of the seat shell 100 can be a plane, and people can directly sit on the top surface of the seat shell 100 when using. In order to improve the use experience, in the embodiment, the top side of the seat shell 100 is connected with a seat cushion 400. The seat cushion 400 can provide elastic buffering function and improve the use comfort of the user.

[0038] An office chair comprises a seat frame and the above-mentioned seat, and the seat frame is connected to the bottom side of the chassis 200.

[0039] In the office chair, the seat frame and the bottom plate 200 of the seat are fixedly connected during production, and the seat shell 100 is separated from the bottom plate 200, so that the office chair is convenient to pack and transport. Before use, the bottom plate 200 is installed into the sliding groove 110 of the seat shell 100. During use, the seat shell 100 is adjusted by sliding relative to the bottom plate 200. After adjustment, the bottom plate 200 is locked in the sliding groove 110 by using the locking assembly. In this way, the convenience of overall assembly is improved, and the demand of people for sliding adjustment of the seat during use can be met. For example, the seat shell 100 can be slid to adjust the distance between the seat shell 100 and the backrest or the distance between the seat shell 100 and a table, and the practicality is stronger.

[0040] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A chair seat, characterized by: The utility model provides a seat shell (100) is provided with the slide groove (110) on the bottom side, and one side of the seat shell (100) is provided with the installation port (120) communicated with the slide groove (110), and the slide groove (110) is provided with the avoidance port near the groove bottom position of the installation port (120), and the seat shell (100) is provided with the limiting piece (130) that can protrude downward or be retracted upward in the avoidance port. The bottom disc (200) is slidably connected in the slide groove (110), and when the limiting piece (130) protrudes downward in the avoidance port, the bottom disc (200) can be limited to be separated from the installation port (120) out of the slide groove (110), and the locking assembly is arranged between the bottom disc (200) and the seat shell (100), and the locking assembly can lock or release the sliding of the bottom disc (200) in the slide groove (110). The fixed plate (140) is connected to the position above the installation port (120) in the seat shell (100), one side of the limiting piece (130) is rotatably connected in the seat shell (100) near the installation port (120), the first elastic element (131) is connected between the top side of the limiting piece (130) and the bottom side of the fixed plate (140), the first elastic element (131) has the tendency of pressing the limiting piece (130) downward and making the bottom of the limiting piece (130) protrude out of the avoidance port, and the bottom surface of the limiting piece (130) extends downward in the direction away from the installation port (120).

2. A seat as claimed in claim 1, characterised in that: The locking assembly comprises a lock rod (310) and a lock block (320), a plurality of lock blocks (320) are arranged in the length direction of the slide groove (110) on one side of the bottom disc (200), the lock rod (310) is slidably connected to one side of the seat shell (100), at least one lock groove is arranged on the side of the lock rod (310) opposite to the bottom disc (200), and the lock rod (310) can drive the lock block (320) to enter or exit the corresponding lock groove when sliding.

3. A seat as claimed in claim 1, wherein: The second elastic element (330) is connected between the lock rod (310) and the seat shell (100), and the second elastic element (330) has the tendency of pressing the lock rod (310) towards the lock block (320).

4. A seat as claimed in claim 3, characterised in that: The lock rod (310) is connected with the handle (340) away from the bottom disc (200).

5. A seat as claimed in claim 3, wherein: The seat shell (100) is provided with the accommodation groove capable of accommodating the handle (340) on the outside.

6. A seat as claimed in claim 5, characterised in that: The slide groove (110) is formed with the inner recess (111) on both sides respectively, the inner recess (111) is communicated with the installation port (120) respectively, and the bottom disc (200) extends into the inner recess (111) on both sides respectively.

7. A seat as claimed in claim 1, wherein: The limiting frame (150) is connected to the groove bottom position in the middle of the slide groove (110), and the bottom disc (200) is recessed downward at the position corresponding to the limiting frame (150) and is formed with the limiting through groove (210) avoiding the limiting frame (150).

8. A seat as claimed in claim 1, characterized in that: The seat cushion (400) is connected to the top side of the seat shell (100).

9. A seat as claimed in claim 1, characterized in that: ​ 10. An office chair characterized by: A seat comprising a seat frame connected to the underside of the base pan (200), a seat pan as claimed in any one of claims 1 to 9.

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