Chair and chair seat rotation locking structure thereof

Abstract

The utility model discloses a chair and a chair seat rotation locking structure thereof. The chair seat rotation locking structure comprises a connecting seat, a gear plate, a first partition plate, a second partition plate, a pressing plate and a locking mechanism, a connecting shaft part is arranged on the connecting seat; the connecting shaft part is sequentially sleeved with the first partition plate, the chair seat and the second partition plate from bottom to top, the pressing plate is fixed to the top of the connecting part, the first partition plate, the chair seat and the second partition plate are limited between the pressing plate and the connecting seat, and the chair seat can rotate on the connecting shaft part; the locking mechanism is arranged between the chair seat and the connecting seat and can lock the chair seat on the connecting seat. The rotary locking structure of the chair seat is directly arranged on the chair seat, and a tray is not required to be arranged, so that the structure of the chair is simpler, and the cost of the structure is lower.

Description

Technical Field

[0001] The utility model relates to the field of seating, in particular to a chair and a seat rotation locking structure thereof. Background Art

[0002] Nowadays, office workers sit in office chairs for a long time. Maintaining the same sitting posture for a long time will make people tired and easily cause poor blood flow in some parts of the human body, affecting health, especially in the back and waist. Therefore, the comfort of the chair is directly related to people's work and life quality.

[0003] In the prior art such as publication number CN201341641Y and CN216393538U, when locking the seat angle, it is achieved by controlling the locking structure inside the gas rod, which requires a higher specification gas rod, increasing the cost of the chair.

[0004] In the prior art with publication numbers CN219762867U, CN204617618U and CN214230604U, when locking the rotation angle of the seat, it is achieved by hard friction between the seat and the cylinder. In this way, it is easy to fail during use, and the friction part in contact with the cylinder needs to be frequently replaced. Utility Model Content

[0005] In order to solve the problems of high cost and complex structure in the prior art, the purpose of the utility model is to provide a chair and a seat rotation locking structure thereof, which has a simpler structure, is more convenient to operate and has a lower cost.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a seat rotation locking structure for controlling the rotation of the seat, including a connecting seat, a shift plate, a first partition, a second partition, a pressure plate and a locking mechanism; the connecting seat is arranged on a connecting shaft portion; the first partition, the seat and the second partition are sequentially sleeved on the connecting shaft portion from bottom to top, the pressure plate is fixed to the top of the connecting shaft portion, the first partition, the seat and the second partition are restricted between the pressure plate and the connecting seat, and the seat can rotate on the connecting shaft portion; the locking mechanism is arranged between the seat and the connecting seat, and the locking mechanism can lock the seat on the connecting seat.

[0007] Preferably, the locking mechanism includes a shift plate, a locking pin and a shift lever; the shift plate is sleeved on the connecting shaft, the shift plate is embedded in the connecting seat, a plurality of third shift holes are opened on the shift plate, and the plurality of third shift holes are arranged around the connecting shaft; the shift lever is mounted on the seat in a swingable manner, the locking pin is mounted on the seat in a liftable manner, the locking pin is connected to the shift lever, and the locking pin is plug-in-pull connected to the third shift hole on the shift plate

[0008] Preferably, an embedding groove is provided on the connecting seat, the connecting shaft is located inside the embedding groove, a locking protrusion is raised on the side wall of the embedding groove, and a locking groove is provided on the inner side wall of the shift plate; the shift plate is located in the embedding groove, and the locking protrusion is engaged with the locking groove.

[0009] Preferably, a first gear hole is provided on the seat, a second gear hole is provided on the first partition, the second gear hole is connected to the first gear hole, a plurality of locking grooves are provided on the connecting seat, the plurality of locking grooves correspond one-to-one to the plurality of third gear holes and are connected to each other, and the locking grooves are located below the third gear hole; the locking pin passes through the first gear hole and the second gear hole, and the locking pin is plugged and unpluggedly connected to the third gear hole and the locking groove.

[0010] Preferably, a first limiting portion protruding downward is provided on the second partition, and a second limiting portion protruding upward is provided on the first partition, and the first limiting portion and the second limiting portion are located between the seat and the connecting shaft portion.

[0011] Preferably, a positioning groove is provided on the seat, a positioning column is protruded from the first partition, and the positioning column is plugged into the positioning groove.

[0012] Preferably, both ends of the lever are bent, and the two ends of the lever are respectively a first limit end and a second limit end; a first limit seat and a second limit seat are provided on the seat; the first limit end and the first limit seat are slidably matched in the up and down directions, and the second limit end and the second limit seat are movably connected.

[0013] Preferably, a rotating handle is fixed on the first limiting end, a first operating hole is opened on the seat, and the bottom of the rotating handle protrudes from the first operating hole.

[0014] Preferably, the locking pin is connected to the shifting rod via a shifting sleeve, and the shifting sleeve is movably connected to the shifting rod.

[0015] A chair comprises the above-mentioned seat rotation locking structure, and a supporting foot is installed at the bottom of the cylinder body.

[0016] The beneficial effects of the technical solution of the utility model are as follows: the above-mentioned seat rotation locking structure is directly arranged on the seat, and there is no need to set a tray, which makes the structure of the chair simpler and the cost of the structure lower; in the above-mentioned structure, when locking the angle of the seat, the locking pin passes through the first gear hole, the third gear hole and the locking groove, so that the seat, the gear plate and the connecting seat are connected as a whole, thereby making the locking effect of the seat more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a chair;

[0018] Figure 2 This is a schematic diagram of the chair structure after removing the seat;

[0019] Figure 3 The structural diagram of the seat rotation locking structure Figure 1 ;

[0020] Figure 4 The structural diagram of the seat rotation locking structure Figure 2 ;

[0021] Figure 5 The structural diagram of the seat rotation locking structure Figure 3 ;

[0022] Figure 6 The structure of the chair seat Figure 1 ;

[0023] Figure 7 The structure of the chair seat Figure 2 ;

[0024] Figure 8 It is a schematic diagram of the structure of the shift plate;

[0025] Fig. 9 It is a structural schematic diagram of the connecting seat;

[0026] Fig.10 is a schematic structural diagram of a first partition;

[0027] Fig.11 A schematic diagram of the structure of the lever.

[0028] Reference numerals: 1, support leg; 2, gas rod; 21, connecting rod;

[0029] 3. Seat; 31. Accommodation groove; 32. Positioning groove; 33. First gear hole; 34. Connecting hole; 36. First column; 361. First baffle plate; 37. Second column; 371. Second baffle plate; 38. Second operating hole; 39. First operating hole;

[0030] 4. Mat;

[0031] 51. Connecting seat; 511. Embedding groove; 512. Locking groove; 513. Clamping convex; 514. Connecting shaft; 516. Assembly hole; 52. Shift plate; 521. Clamping groove; 522. Third shift hole; 53. First partition plate; 531. Second limiting portion; 532. Second shift hole; 533. Positioning column; 54. Second partition plate; 55. Pressing plate; 56. Locking pin; 57. Pulling sleeve; 58. Pulling rod; 581. Second limiting end; 582. First limiting end; 59. Rotating handle;

[0032] 6. Lifting swing arm. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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 utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0038] like Figures 2 to 5 The seat rotation locking structure shown includes a connecting seat 51, a shift plate 52, a first partition 53, a second partition 54, a pressure plate 55 and a locking mechanism; the connecting seat 51 is provided with an upward connecting shaft 514, and the connecting seat 51 is provided with an assembly hole 516 that passes through from top to bottom; the first partition 53, the seat 3 and the second partition 54 are sequentially sleeved on the connecting portion 514 from bottom to top, the pressure plate 55 is fixed on the top of the connecting shaft 514, the first partition 53, the seat 3 and the second partition 54 are restricted between the pressure plate 55 and the connecting seat 51, and the seat 3 can rotate on the connecting shaft; the locking mechanism is provided between the seat 3 and the connecting seat, and the locking mechanism can lock the seat 3 on the connecting seat. The connecting rod 21 on the gas rod 2 is plugged into and tightly matched with the assembly hole 516, and the connecting rod on the gas rod only performs lifting and lowering actions. The locking mechanism includes a shift plate 52, a locking pin 56 and a lever 58; the shift plate 52 is embedded in the connecting seat 51, the connecting shaft 514 is located on the inner side of the shift plate 52, a plurality of third shift holes 522 are provided on the shift plate 52, the plurality of third shift holes 522 are arranged around the gas rod 2, a plurality of locking grooves 512 are provided on the connecting seat 51, the plurality of locking grooves 512 correspond one by one to the plurality of third shift holes 522 and are interconnected; the seat 3 is sleeved on the connecting shaft 514, and a first shift hole 33 is provided on the seat 3; the locking pin 56 passes through the first shift hole 33, the top of the locking pin 56 is connected to the lever 58, the lever 58 is mounted on the seat 3 in a swingable manner, and the bottom of the locking pin 56 can pass through the third shift hole 522 and be plugged and unplugged with the locking groove 512.

[0039] In this way, the seat rotation locking structure is arranged on the seat, and the gas rod 2 only needs to perform lifting and lowering actions, and the above structure only needs a connecting seat 51, a shift plate 52, a locking pin 56 and a lever 58, which makes the structure for limiting the rotation angle of the seat 3 simpler and the cost of the structure lower; in the above structure, when locking the angle of the seat 3, the locking pin 56 passes through the first shift hole 33, the third shift hole 522 and the locking groove 512, thereby connecting the seat 3, the shift plate 52 and the connecting seat 51 as a whole, thereby making the locking effect of the seat 3 more stable.

[0040] like Figure 3 , Figure 4 , Figure 5 , Figure 8 and Fig. 9As shown, in this embodiment, the connection seat 51 is provided with an embedding groove 511, the connection shaft portion 514 is located inside the embedding groove 511, a clamping protrusion 513 is protruded on the side wall of the embedding groove 511, and a clamping groove 521 is provided on the inner side wall of the shift plate 52; the shift plate 52 is located in the embedding groove 511, and the clamping protrusion 513 is engaged with the clamping groove 521. Furthermore, a locking groove 512 is provided on the bottom wall of the embedding groove 511, and the locking groove 512 is located below the third shift hole 522. Such a configuration facilitates the installation of the connection seat 51 and the shift plate 52, and facilitates the positioning of the third shift hole 522 and the locking groove 512.

[0041] like Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Fig.10 As shown, in this embodiment, the second partition plate 54 and the first partition plate 53 are sleeved on the connecting shaft portion 514, the second partition plate 54 is located between the seat 3 and the pressure plate 55, the first partition plate 53 is located between the seat 3 and the connecting seat 51, and the first partition plate 53 is provided with a second gear hole 532, the second gear hole 532 is connected with the first gear hole 33, and the locking pin 56 passes through the second gear hole 532. In this way, the pressure plate 55, the second partition plate 54, the seat 3, the first partition plate 53 and the connecting plate are convenient for coordination. Further, the second partition plate 54 is provided with a first limiting portion protruding downward, and the first partition plate 53 is provided with a second limiting portion protruding upward, and the first limiting portion and the second limiting portion 531 are located between the seat 3 and the connecting shaft portion 514. Such a configuration facilitates the installation of the seat 3 and the connecting shaft portion 514. Furthermore, a positioning groove 32 is provided on the seat 3, and a positioning column 533 is protruded on the first partition 53, and the positioning column 533 is plugged into the positioning groove 32. This arrangement facilitates the positioning between the first partition 53, the seat 3 and the second partition 54, and facilitates the installation of the locking structure.

[0042] like Figure 2 , Figure 4 ,and Fig.11 As shown, in this embodiment, both ends of the lever 58 are bent, and the two ends of the lever 58 are respectively a first limit end 582 and a second limit end 581; a first limit seat and a second limit seat are provided on the seat 3; the first limit end 582 and the first limit seat are slidably matched in the up and down directions, and the second limit end 581 is movably connected with the second limit seat.

[0043] like Figure 2 and Figure 6As shown, further, the first limit seat includes a first baffle 361 and two first columns 36, the first column 36 is fixedly connected to the seat 3, and the two ends of the first baffle 361 are respectively fixedly connected to the tops of the two first columns 36; a rotating handle 59 is installed on the first limit end 582 of the shift rod 58, the rotating handle 59 passes through between the two first columns 36, the two first columns 36 clamp the rotating handle 59, and the rotating handle 59 and the first columns 36 slide in the up and down directions; the second limit seat includes a second baffle 371 and two second columns 37, the second column 37 is fixedly connected to the seat 3, and the tops of the two second columns 37 are fixedly connected to the second baffle 371; the second limit end 581 of the shift rod 58 is inserted between the two second columns 37.

[0044] Furthermore, a spring is arranged between the first baffle plate 361 and the rotating handle 59; when the user lifts the rotating handle 59, the rotating handle 59 drives the locking pin 56 to withdraw from the third gear hole 522 and the locking groove through the shift rod 58, and compresses the spring; after the user releases the handle, the spring drives the rotating handle 59 to reset, and the rotating handle 59 drives the locking pin 56 to insert into the third gear hole 522 and the locking groove 512 through the shift rod 58.

[0045] Further, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, a first operating hole 39 is provided on the seat 3, and the other end of the rotating handle protrudes from the bottom of the seat 3 through the first operating hole 39. Such an arrangement allows the movement of the lever 58 to be more flexible.

[0046] like Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the locking pin 56 is connected to the lever 58 through the pull sleeve 57. Specifically, the locking pin 56 is L-shaped, the pull sleeve 57 is U-shaped, a through hole is provided on the pull sleeve 57, one end of the locking pin 56 is inserted into the through hole of the pull sleeve 57, and the lever 58 passes through the opening of the pull sleeve 57. In this way, the special shape of the locking pin 56 and the pull sleeve 57 can effectively improve the smoothness of the movement of the lever 58 and maintain the stability of the locking structure operation.

[0047] like Figure 3 As shown, in this embodiment, a connecting sleeve is embedded on the inner wall of the assembly hole 516, the top of the connecting rod 21 is conical, and the top of the connecting rod 21 is inserted into the connecting sleeve and is tightly fitted with the connecting sleeve.

[0048] In this embodiment, Figure 7 As shown, a receiving groove 31 is provided at the bottom of the seat 3, and a connecting hole 34 is provided in the middle of the receiving groove 31. Figure 2 and Figure 3As shown, the connecting seat 51 is located in the accommodating groove 31, and the connecting rod 21 of the gas rod 2 is plugged and tightly matched with the connecting hole 34. Such an arrangement makes the structure of the chair more compact and beautiful.

[0049] like Figure 1 and Figure 2 As shown, a chair includes the above-mentioned seat rotation locking structure, the chair cushion 4 is fixed on the seat 3, and a supporting foot 1 is fixed at the bottom of the gas rod; a middle hole is provided on the pressure plate 55, and a valve button is provided at the central position of the top of the gas rod 2, and the valve button 22 is exposed from the middle position of the pressure plate 55, and a lifting swing arm 6 is hinged on the seat 3, and a pressure head is protruded at one end, and the pressure head is located above the valve button 22. One end of the lifting swing arm 6 is located above the valve button and can be against the valve button 22, and a lifting handle is installed at the other end of the lifting swing arm 6, and a second operating hole 38 is opened on the seat 3, and the bottom of the lifting handle is exposed from the second operating hole 38; by driving the lifting swing arm 6, the pressure head presses the valve button 22 to control the lifting and lowering of the connecting rod 21.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A seat rotation locking structure for controlling the rotation of a seat, characterized in that: It comprises a connecting seat (51), a shift plate (52), a first partition plate (53), a second partition plate (54), a pressing plate (55) and a locking mechanism; A connecting shaft portion (514) is provided on the connecting seat (51); The first partition plate (53), the seat (3) and the second partition plate (54) are sequentially sleeved on the connecting shaft portion (514) from bottom to top, the pressing plate (55) is fixed on the top of the connecting shaft portion (514), the first partition plate (53), the seat (3) and the second partition plate (54) are restricted between the pressing plate (55) and the connecting seat (51), and the seat (3) can rotate on the connecting shaft portion (514); The locking mechanism is arranged between the seat (3) and the connecting seat, and the locking mechanism can lock the seat (3) on the connecting seat (51); The locking mechanism comprises a shift plate (52), a locking pin (56) and a shifting rod (58); The shift plate (52) is sleeved on the connecting shaft portion (514), the shift plate (52) is embedded in the connecting seat (51), a plurality of third shift holes (522) are formed on the shift plate (52), and the plurality of third shift holes (522) are arranged around the connecting shaft portion (514); The lever (58) is mounted on the seat (3) in a swingable manner, the locking pin (56) is mounted on the seat (3) in a liftable manner, the locking pin (56) is connected to the lever (58), and the locking pin (56) is pluggably connected to a third gear hole (522) on the gear plate (52).

2. A seat rotation locking structure according to claim 1, characterized in that: The connecting seat (51) is provided with an embedding groove (511), the connecting shaft portion (514) is located inside the embedding groove (511), a locking protrusion (513) is protruded on the side wall of the embedding groove (511), and a locking groove (521) is provided on the inner side wall of the shift plate (52); the shift plate (52) is located in the embedding groove (511), and the locking protrusion (513) is locked with the locking groove (521).

3. The seat rotation locking structure according to claim 1, characterized in that: A first gear hole (33) is formed on the seat (3), a second gear hole (532) is formed on the first partition plate (53), the second gear hole (532) is communicated with the first gear hole (33), a plurality of locking grooves (512) are formed on the connecting seat (51), the plurality of locking grooves (512) correspond to the plurality of third gear holes (522) one by one and are communicated with each other, and the locking grooves (512) are located below the third gear holes (522); The locking pin (56) passes through the first gear position hole (33) and the second gear position hole (532), and the locking pin (56) is plug-in-pull connected to the third gear position hole (522) and the locking groove (512).

4. The seat rotation locking structure according to claim 1, characterized in that: The second partition plate (54) is provided with a first limiting portion protruding downwards, and the first partition plate (53) is provided with a second limiting portion (531) protruding upwards. The first limiting portion and the second limiting portion (531) are located between the seat and the connecting shaft portion (514).

5. The seat rotation locking structure according to claim 1, characterized in that: Both ends of the lever (58) are bent, and the two ends of the lever (58) are respectively a first limiting end (582) and a second limiting end (581); A first limiting seat and a second limiting seat are provided on the seat (3); the first limiting end (582) is slidably matched with the first limiting seat in the up-down direction, and the second limiting end (581) is movably connected with the second limiting seat.

6. The seat rotation locking structure according to claim 5, characterized in that: A rotating handle (59) is fixed on the first limiting end (582), a first operating hole (39) is provided on the seat (3), and the bottom of the rotating handle (59) protrudes from the first operating hole (39).

7. The seat rotation locking structure according to claim 1, characterized in that: The locking pin (56) is connected to the shifting rod (58) via the shifting sleeve (57), and the shifting sleeve (57) and the shifting rod (58) are movably connected.

8. The seat rotation locking structure according to claim 1, characterized in that: A positioning groove (32) is provided on the seat (3), a positioning column (533) is protruded from the first partition plate (53), and the positioning column (533) is plugged into the positioning groove (32).

9. A chair, characterized in that: A seat rotation locking structure comprising any one of claims 1 to 8, wherein a support foot (1) is installed at the bottom of the cylinder body.

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