Office chair rotating mechanism capable of automatically resetting

Abstract

The utility model relates to the technical field of office chairs, and discloses an automatic reset office chair rotating mechanism which comprises a movable base, the top of the movable base is fixedly connected with a first supporting column, the top of the first supporting column is fixedly connected with a reset mechanism, and the top of the reset mechanism is fixedly connected with an office chair body. Armrest mounting plates are fixedly connected to the left side and the right side of the exterior of the office chair body, and armrest supporting columns are fixedly connected to the sides, far away from each other, of the two armrest mounting plates. According to the office chair disclosed by the utility model, the office chair body slides outside the connecting and fixing plate through the connecting and rotating disc by rotating the office chair body, and a plurality of sliding steel balls are placed between the connecting and rotating disc and the connecting and fixing plate, so that the sliding is smoother, and a reset spring is deformed in the rotating process; and through resilience of a reset spring, the connecting rotating disc drives the office chair body to reset through a fixing bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair technical field especially automatic reset's office chair rotation mechanism. BACKGROUND

[0002] In the office environment, the staff needs to turn around frequently to communicate with colleagues, take files or office supplies. The automatic reset office chair rotation mechanism can make the user easily rotate the seat to face different directions, such as discussing work plans with colleagues at the next table, taking materials from the file cabinet behind, etc. And after completing the action, the chair can automatically reset, keep the office area neat and standardized, and avoid the chair randomly placed to occupy the aisle space or interfere with the use of other office facilities.

[0003] In the prior art, part of the office chair generally uses counterweight reset, which is realized by setting counterweight blocks at specific positions of the rotation mechanism. When the office chair rotates, the position of the counterweight block changes, and the torque generated by its gravity also changes.

[0004] But in the specific use process, in the office environment, if the office chair cannot automatically reset, the chair will stay in the aisle or passage position. This will hinder the normal passage of personnel, especially in open office space or small office area where personnel move frequently, which will cause people to need to move the chair frequently to clear the aisle, reducing work efficiency. In view of the above problems, the automatic reset office chair rotation mechanism is proposed. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides an automatic reset office chair rotation mechanism, aiming at improving the problem that part of the device in the prior art cannot automatically reset.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The automatic reset office chair rotation mechanism comprises a mobile base, a support column one is fixedly connected to the top of the mobile base, a reset mechanism is fixedly connected to the top of the support column one, an office chair body is fixedly connected to the top of the reset mechanism, a handrail mounting plate is fixedly connected to the left and right sides of the outside of the office chair body, a handrail support column is fixedly connected to the far side of the two handrail mounting plates, a seat handrail is fixedly connected to the top of the handrail support column, a sliding block one is slidably connected to the outside of the seat handrail, and a clamping mechanism is fixedly connected to the outside of the sliding block one.

[0008] The reset mechanism comprises a connecting fixed plate, a bearing is fixedly connected inside the connecting fixed plate, a connecting rotating disc is rotatably connected outside the bearing, a plurality of sliding steel balls are slidably connected inside the connecting rotating disc, a circular ring protective shell is fixedly connected outside the connecting rotating disc, a reset spring is arranged inside the circular ring protective shell, the connecting fixed plate is fixedly connected at the top of the supporting column I, positioning grooves are formed in the outer four corners of the connecting rotating disc, fixed bolts are fixedly connected to the outer four corners of the connecting rotating disc, and an adjusting assembly is rotatably connected outside the sliding block I;

[0009] As a further description of the above technical scheme:

[0010] The adjusting assembly comprises a follow-up plate, a fixing frame is rotatably connected to the other end of the follow-up plate, a backing plate fixing block is fixedly connected to the bottom of the fixing frame, a leg pad supporting plate is fixedly connected to the bottom front side of the office chair body, through-hole plates are fixedly connected to the top left and right sides of the leg pad supporting plate, and the follow-up plate is rotatably connected to the outer bottom end of the sliding block I;

[0011] As a further description of the above technical scheme:

[0012] The clamping mechanism comprises a supporting frame, a rotating clamping plate is rotatably connected inside the supporting frame, an extension rod is fixedly connected outside the rotating clamping plate, a spring I is sleeved outside the extension rod, a positioning clamping rod is fixedly connected outside the rotating clamping plate, and the supporting frame is fixedly connected to the outer left and right sides of the sliding block I;

[0013] As a further description of the above technical scheme:

[0014] A leg pad sliding block is slidably connected inside the through-hole plate, and a leg pad body is fixedly connected to the top front side of the leg pad sliding block;

[0015] As a further description of the above technical scheme:

[0016] The outer part of the seat armrest is provided with a plurality of clamping grooves, and the outer part of the positioning clamping rod is clamped with the inner part of the clamping groove;

[0017] As a further description of the above technical scheme:

[0018] The outer part of the connecting rotating disc is rotatably connected to the outer top end of the connecting fixed plate, and the positioning grooves are formed in the outer four corners of the connecting fixed plate;

[0019] As a further description of the above technical scheme:

[0020] The other end of the follow-up plate is slidably connected to the inside of the leg pad support plate through the fixed frame, and the outside of the leg pad sliding block is slidably connected to the outside top end of the leg pad support plate.

[0021] Further description of the above technical solution:

[0022] One end of the spring one is fixedly connected to the inside of the support frame, and the other end of the spring one is fixedly connected to the outside of the rotating clamping plate.

[0023] The utility model has the advantages of:

[0024] 1. In the utility model, the office chair body is rotated, the office chair body slides on the outside of the connecting fixed plate through the connecting rotating disc, a plurality of sliding steel balls are arranged between the connecting rotating disc and the connecting fixed plate, the sliding is smoother, the return spring is deformed during rotation, and the office chair body is reset through the fixed bolt of the connecting rotating disc when the pressure reaches a certain value, the automatic reset function ensures that the office chair returns to the initial position after use, avoids the chair staying in the aisle or passage, and enables personnel to freely and smoothly pass through the office area.

[0025] 2. In the utility model, the rotating clamping plate is pressed, the rotating clamping plate is extruded to the spring one, the rotating clamping plate outside the spring one is deformed, the positioning clamping rod is separated from the outside of the clamping groove, the leg pad sliding block is moved to the appropriate position, the rotating clamping plate is loosened, the positioning clamping rod is clamped with the clamping groove, the foot pad is adjusted, and the needs of users with different heights are better met. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic view of the automatic reset office chair rotating mechanism of the utility model;

[0027] Figure 2 It is a structural schematic view of the fixed bolt of the automatic reset office chair rotating mechanism of the utility model;

[0028] Figure 3 It is a structural schematic view of the sliding steel ball of the automatic reset office chair rotating mechanism of the utility model;

[0029] Figure 4 It is Figure 2 It is an enlarged view of A in the middle.

[0030] LEGEND:

[0031] 1, mobile base; 2, support column one; 3, connecting fixed plate; 4, bearing; 5, connecting rotating disc; 6, sliding steel ball; 7, circular ring protective shell; 8, reset spring; 9, positioning groove; 10, fixed bolt; 11, office chair body; 12, armrest mounting plate; 13, armrest support column; 14, seat armrest; 15, sliding block one; 16, follow-up plate; 17, fixing frame; 18, pad fixing block; 19, leg pad support plate; 20, through hole plate; 21, leg pad sliding block; 22, leg pad body; 23, support frame; 24, telescopic rod; 25, spring one; 26, rotating clamping plate; 27, positioning clamping rod; 28, clamping groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] Reference Figures 1 to 3 An embodiment provided by the present application: an office chair rotating mechanism with automatic reset, comprising a mobile base 1, the mobile base 1 serves as the root of the entire office chair rotating mechanism, bearing the weight of all components above and giving the office chair the characteristic of flexible movement, the top of the mobile base 1 is fixedly connected with a support column one 2, the support column one 2 is like a solid bridge, connecting the mobile base 1 with the reset mechanism above, the support column one 2 is generally selected from round or square metal pipes, such as stainless steel pipes, which are processed by fine processing technology to ensure that they have straight shape and uniform wall thickness, the top of the support column one 2 is fixedly connected with a reset mechanism, the reset mechanism can make the office chair automatically return to the original position when no one uses it, the top of the reset mechanism is fixedly connected with an office chair body 11, the office chair body 11 is the part directly contacting with the user, and the comfort design thereof is directly related to the office experience of the user, the left and right sides of the outside of the office chair body 11 are fixedly connected with armrest mounting plates 12, the armrest mounting plates 12 serve as the support carriers of seat armrests 14 and provide comfortable placement platforms for the arms of the user, the sides away from each other of the two armrest mounting plates 12 are fixedly connected with armrest support columns 13, the armrest support columns 13 play the role of further improving the height and stability of the seat armrests 14 and provide more ergonomic support positions for the arms of the user, the top of the armrest support column 13 is fixedly connected with a seat armrest 14, the seat armrest 14 usually adopts soft rubber or silicone material as the outer wrapping, and is filled with high-elasticity sponge or foam material in the inside, which can provide soft and comfortable touch for the arms of the user and effectively buffer the pressure when the arms are placed, avoiding the generation of pressure pain;

[0034] The armrest 14 is externally slidably connected to a sliding block 15. This sliding connection provides the basis for the flexible operation of the clamping mechanism, allowing it to adjust its position according to the user's needs. The sliding block 15 is externally fixedly connected to a clamping mechanism, which includes a support frame 23. The support frame 23 serves as the basic framework of the clamping mechanism, providing a stable support environment for components such as the rotating clamping plate 26. The support frame 23 is generally made of metal, such as stainless steel, and is manufactured into a frame structure with a certain strength and rigidity through bending and welding processes. The support frame 23 is internally rotatably connected to a rotating clamping plate 26. The rotating clamping plate 26 is typically designed in a rectangular or semi-circular shape. One end is connected to a pin or hinge, allowing it to rotate freely around its axis. The other end is used to work in conjunction with the positioning lever 27 to achieve object positioning. For locking or unlocking items, users can easily rotate the rotating plate 26 to flexibly adjust the locking state according to actual needs, meeting diverse office requirements. The rotating plate 26 is externally fixedly connected to a telescopic rod 24, which is usually made of high-strength metal materials, such as stainless steel tubes. The internal structure of the telescopic rod 24 is designed to be telescopic, consisting of an inner rod and an outer tube. The fit between the inner rod and the outer tube is extremely precise. Through precise processing technology, it is ensured that the inner rod can freely and smoothly extend and retract within the outer tube. A spring 25 is sleeved on the outside of the telescopic rod 24. The rotating plate 26 is externally fixedly connected to a positioning rod 27. The positioning rod 27 is a key locking component of the rotating plate 26 and works in conjunction with the rotating plate 26 to achieve effective locking of items. The support frame 23 is externally fixedly connected to the left and right sides of the sliding block 15.

[0035] The reset mechanism comprises a connecting fixed plate 3 which stably anchors the entire reset mechanism to the top of the support column 1 in the reset mechanism, the inside of the connecting fixed plate 3 is fixedly connected with a bearing 4, the bearing 4 is the core pivot for realizing flexible rotation of the connecting rotating disc 5 and is the key element for ensuring smooth rotation of the office chair, a high-precision, high-speed and excellent wear-resistant rolling bearing 4 is selected, common types include deep groove ball bearings 4 or angular contact ball bearings 4, and the bearing 4 is accurately selected according to the specific design load and rotation performance of the office chair, the outside of the bearing 4 is rotatably connected with a connecting rotating disc 5, the connecting rotating disc 5 is a direct bearing component for realizing rotation of the office chair body 11 and is located in the core zone of the entire rotating mechanism, it is usually integrally formed by using lightweight but high-strength aluminum alloy material, a perfect disc shape is formed through a precise mechanical processing process, the disc surface flatness is extremely high, the circumferential precision meets strict requirements, thereby laying a solid foundation for stable rotation of the office chair, a plurality of sliding steel balls 6 are slidably connected inside the connecting rotating disc 5, the sliding steel balls 6 are a delicate design for further optimizing the rotation performance of the connecting rotating disc 5, they are uniformly distributed in the specific tracks or grooves inside the connecting rotating disc 5 and form a low-friction sliding connection relationship with the connecting rotating disc 5, the outside of the connecting rotating disc 5 is fixedly connected with a circular protective shell 7, the circular protective shell 7 also has a certain safety protection function, during rotation of the office chair, it prevents the user's clothes, fingers and the like from being accidentally wrapped into the gap between the connecting rotating disc 5 and other components, thereby avoiding potential safety risks, the inside of the circular protective shell 7 is provided with a reset spring 8, the reset spring 8 is carefully made of high-quality high-elasticity alloy steel material and is subjected to strict heat treatment process, the spring elastic coefficient is accurately controlled, so that the reset spring 8 can provide just the right reset torque according to the design requirements of the office chair;

[0036] The outer part of the connecting fixed plate 3 is fixedly connected to the top of the support column one 2, the outer four corners of the connecting rotating disc 5 are provided with positioning grooves 9, the positioning grooves 9 are distributed on the outer four corners of the connecting rotating disc 5, and they seem small but contain great significance, which are the key details to realize the accurate reset of the office chair, the outer four corners of the connecting rotating disc 5 are fixedly connected with fixed bolts 10, the outer part of the sliding block one 15 is rotatably connected with an adjusting assembly, and the rotating connection between the adjusting assembly and the sliding block one 15 adds more personalized and comfortable adjusting functions to the office chair, so that the user can flexibly adjust the auxiliary facilities around the office chair according to the own needs, the adjusting assembly comprises a follower plate 16, the other end of the follower plate 16 is rotatably connected with a fixing frame 17, the bottom of the fixing frame 17 is fixedly connected with a pad fixing block 18, the bottom front side of the office chair body 11 is fixedly connected with a leg pad support plate 19, the leg pad support plate 19 serves as a direct supporting structure of the office chair leg pad and provides a stable and comfortable placement platform for the legs of the user. It is usually made of a solid and durable metal plate, such as a steel plate, which is firmly fixed to the bottom front side of the office chair body 11 by welding, bolt connection and the like, the top and left and right sides of the leg pad support plate 19 are fixedly connected with through-hole plates 20, the through-hole plates 20 serve as a connecting transition component between the leg pad and the leg pad support plate 19 and play an important role in fixing and adjusting, and the outer part of the follower plate 16 is rotatably connected to the outer bottom end of the sliding block one 15.

[0037] Referring to Figures 3 to 4 , the inner part of the through-hole plate 20 is slidably connected with a leg pad sliding block 21, the top front side of the leg pad sliding block 21 is fixedly connected with a leg pad body 22, and the leg pad body 22 is generally made of a high-elasticity and breathable material, such as high-quality sponge wrapped with breathable fabric, and the density and softness of the sponge are carefully selected according to the principle of ergonomics, so as to ensure that the leg pressure can be buffered to the right degree, the leg curve is fitted, effective leg support is provided for the user who sits for a long time, leg fatigue is relieved, the outer part of the seat armrest 14 is provided with a plurality of clamping grooves 28, the clamping grooves 28 are designed in full consideration of the actual needs in daily office work, they are distributed at appropriate positions of the seat armrest 14, and are usually rectangular in shape, and the groove wall is finely polished, and the surface roughness is extremely low;

[0038] so as to ensure accurate fitting with the positioning clamping rod 27, the outer part of the positioning clamping rod 27 is clamped with the inner part of the clamping groove 28, the outer part of the connecting rotating disc 5 is rotatably connected to the outer top end of the connecting fixed plate 3, the positioning grooves 9 are arranged on the outer four corners of the connecting fixed plate 3, the other end of the follower plate 16 is slidably connected to the inner part of the leg pad support plate 19 through the fixing frame 17, the outer part of the leg pad sliding block 21 is slidably connected to the outer top end of the leg pad support plate 19, one end of the spring one 25 is fixedly connected to the inner part of the support frame 23, and the other end of the spring one 25 is fixedly connected to the outer part of the rotating clamping plate 26.

[0039] Working principle: when the body is reset, through the rotation of the office chair body 11, under the action of the office chair body 11, the office chair body 11 is connected to the rotating disc 5 and slides outside the connecting fixed plate 3, because a plurality of sliding steel balls 6 are placed between the connecting rotating disc 5 and the connecting fixed plate 3, which can make the sliding more smooth, in the process of rotation, the reset spring 8 is deformed, when extruded to a certain force, through the rebound of the reset spring 8, the connecting rotating disc 5 drives the office chair body 11 to reset through the fixing bolt 10;

[0040] When adjusting and fixing the leg pad body 22, press the rotating clamping plate 26, under the action of the rotating clamping plate 26, the rotating clamping plate 26 is extruded to the spring 25, under the action of the spring 25, the rotating clamping plate 26 outside the spring 25 is deformed, which can make the positioning clamping rod 27 separate from the outside of the clamping groove 28, and then the sliding block 15 can slide, under the action of the sliding block 15, the sliding block 15 drives the fixed frame 17 to move through the follow-up plate 16, because of the leg pad support plate 19, the fixed frame 17 drives the leg pad sliding block 21 to move without falling off, when the leg pad sliding block 21 is moved to the appropriate position, the rotating clamping plate 26 is loosened, which can make the positioning clamping rod 27 and the clamping groove 28 be clamped.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for the skilled in the art, it still modifies the technical solutions recorded in the foregoing embodiments, or makes equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. Self-resetting office chair swivel mechanism comprising a mobile base (1), characterized in that: The top of the mobile base (1) is fixedly connected with a support column one (2), the top of the support column one (2) is fixedly connected with a reset mechanism, the top of the reset mechanism is fixedly connected with an office chair body (11), the outside left and right sides of the office chair body (11) are fixedly connected with armrest mounting plates (12), the far sides of the two armrest mounting plates (12) are fixedly connected with armrest support columns (13), the top of the armrest support column (13) is fixedly connected with a seat armrest (14), the outside of the seat armrest (14) is slidably connected with a sliding block one (15), and the outside of the sliding block one (15) is fixedly connected with a clamping mechanism. The reset mechanism comprises a connecting fixed plate (3), the inside of the connecting fixed plate (3) is fixedly connected with a bearing (4), the outside of the bearing (4) is rotatably connected with a connecting rotary disc (5), the inside of the connecting rotary disc (5) is slidably connected with a plurality of sliding steel balls (6), the outside of the connecting rotary disc (5) is fixedly connected with a circular ring protective shell (7), the inside of the circular ring protective shell (7) is provided with a reset spring (8), the outside of the connecting fixed plate (3) is fixedly connected at the top of the support column one (2), the outside of the connecting rotary disc (5) is provided with a positioning groove (9) at each corner, the outside of the connecting rotary disc (5) is fixedly connected with a fixed bolt (10) at each corner, and the outside of the sliding block one (15) is rotatably connected with an adjusting assembly.

2. An automatically resetting office chair swivel mechanism according to claim 1, characterized in that: The adjusting assembly comprises a follow-up plate (16), the other end of the follow-up plate (16) is rotatably connected with a fixing frame (17), the bottom of the fixing frame (17) is fixedly connected with a pad fixed block (18), the bottom front side of the office chair body (11) is fixedly connected with a leg pad support plate (19), the top left and right sides of the leg pad support plate (19) are fixedly connected with through-hole plates (20), and the outside of the follow-up plate (16) is rotatably connected at the outside bottom end of the sliding block one (15).

3. An auto-return office chair swivel mechanism as recited in claim 1, wherein: The clamping mechanism comprises a support frame (23), the inside of the support frame (23) is rotatably connected with a rotary clamping plate (26), the outside of the rotary clamping plate (26) is fixedly connected with a telescopic rod (24), the outside of the telescopic rod (24) is sleeved with a spring one (25), the outside of the rotary clamping plate (26) is fixedly connected with a positioning clamping rod (27), and the outside of the support frame (23) is fixedly connected at the outside left and right sides of the sliding block one (15).

4. An automatically resetting office chair swivel mechanism according to claim 2, characterized in that: The inside of the through-hole plate (20) is slidably connected with a leg pad sliding block (21), and the top front side of the leg pad sliding block (21) is fixedly connected with a leg pad body (22).

5. An auto-return office chair swivel mechanism as recited in claim 3, wherein: The outside of the seat armrest (14) is provided with a plurality of clamping grooves (28), and the outside of the positioning clamping rod (27) is clamped with the inside of the clamping groove (28).

6. An automatically resetting office chair swivel mechanism according to claim 1, characterized in that: The outside of the connecting rotary disc (5) is rotatably connected at the outside top end of the connecting fixed plate (3), and the positioning groove (9) is arranged at each corner of the outside of the connecting fixed plate (3). The outside of the connecting rotary disc (5) is rotatably connected at the outside top end of the connecting fixed plate (3), and the positioning groove (9) is arranged at each corner of the outside of the connecting fixed plate (3).

7. An automatically resetting office chair swivel mechanism according to claim 4, characterized in that: The other end of the follow-up plate (16) drives the pad fixed block (18) to be slidingly connected in the inside of the leg pad support plate (19) through the fixed frame (17), and the outside of the leg pad sliding block (21) is slidingly connected to the outside top end of the leg pad support plate (19).

8. An automatically resetting office chair swivel mechanism according to claim 3, characterized in that: One end of the spring (25) is fixedly connected to the inside of the support frame (23), and the other end of the spring (25) is fixedly connected to the outside of the rotating clamping plate (26).

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