Back support adjustable gaming chair

Abstract

The utility model relates to the technical field of seat adjustment discloses adjustable e-sports chair of back support, including e-sports chair body, and set up on the waist of e-sports chair body and the back, and be equipped with adjusting assembly between the back and e-sports chair body, the adjusting assembly includes the bottom plate and the waist of connecting back mounting plate, the bottom plate with the back mounting plate are connected through four scissor arms and guide structure, the middle part of four scissor arms is connected into parallelogram mechanism through two hinged shafts, the end of two scissor arms close to the center position of bottom plate is fixedly connected with a crossbeam in common, be provided with second mounting portion on the bottom plate. In the utility model, the cooperation of scissor arm mechanism and guide structure, buffer spring makes the back adjustment smooth, accurate and controllable, and utilizes the self-locking characteristic of screw structure to keep the back stable at any position, improves user experience.

Description

Technical Field

[0001] This utility model relates to the field of seat adjustment technology, and in particular to a gaming chair with adjustable back support. Background Technology

[0002] With the improvement of people's living standards and the enhancement of health awareness, the comfort and ergonomic design of chairs are receiving increasing attention. As a key support area for the human spine, the lumbar region is prone to fatigue, soreness, and even lumbar spine diseases due to a lack of effective support during prolonged sitting. Therefore, chairs with lumbar support adjustment functions have been widely used in office chairs, car seats, and home chairs, providing personalized lumbar support according to the different body characteristics and sitting habits of users, effectively relieving lumbar pressure and improving sitting comfort.

[0003] Currently, lumbar support adjustment mechanisms on the market are mainly divided into two categories: manual adjustment and electric adjustment. While electric adjustment is convenient to operate, it suffers from high cost, complex structure, difficult maintenance, and high failure rate, and it cannot be used normally in the event of a power failure. Manual adjustment, on the other hand, is cheaper, but in existing technologies, some structures often require multiple sets of linkages, gears, or cams to achieve reliable locking, resulting in a complex overall structure, a large number of parts, and difficult assembly, further affecting the ease of adjustment. Therefore, the proposed solution is an adjustable backrest gaming chair to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a gaming chair with adjustable back support, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable gaming chair includes a gaming chair body, a lumbar support mounted on the gaming chair body, and an adjustment assembly between the lumbar support and the gaming chair body. The adjustment assembly includes a base plate and a lumbar support mounting plate connected to the lumbar support. The base plate and the lumbar support mounting plate are connected by four scissor arms and a guide structure. The middle parts of the four scissor arms are connected by two hinge shafts to form a parallelogram mechanism. The ends of the two scissor arms near the center of the base plate are fixedly connected to a crossbeam. A second mounting part is provided on the base plate. A steel wire rope is provided between the crossbeam and the second mounting part through a mounting mechanism. The end of the steel wire rope away from the crossbeam passes through the second mounting part and extends outward. An adjustment mechanism is connected to the end of the wire rope away from the crossbeam. The adjustment mechanism is used to control the horizontal distance between the crossbeam and the second mounting part by adjusting the effective length of the wire rope. As a further description of the above technical solution: The installation mechanism includes a first installation part opened on the crossbeam, a fixing plate installed on the inner wall of the first installation part, two mounting holes provided on the fixing plate, one end of the steel wire rope near the crossbeam being fixedly connected to the fixing plate, and the fixing plate being fixedly connected to the crossbeam via the two mounting holes by fasteners; As a further description of the above technical solution: A fixing block is fixedly connected to the outer wall of the second mounting part, and a guide sleeve is fixedly installed at the right end of the fixing block. The outer wall of the wire rope slides through the inside of the fixing block and the guide sleeve, and the guide sleeve provides guidance and support for the wire rope. As a further description of the above technical solution: The adjusting mechanism includes a fixed cylinder fixedly connected to the right end of the guide sleeve, a threaded rod threadedly connected to the inner wall of the fixed cylinder, a connecting shaft fixedly connected to the right end of the threaded rod, and a rotating handle fixedly connected to the right end of the connecting shaft. As a further description of the above technical solution: The threaded rod has a cavity inside, and the right end of the wire rope is fixedly connected to an end head. The outer wall of the end head is tightly fitted with the inner wall of the cavity and can slide relative to it. As a further description of the above technical solution: The outer wall of the connecting shaft slides in contact with the inner wall of the fixed cylinder, and a mounting side plate is fixedly connected to the front side of the fixed cylinder; As a further description of the above technical solution: The guide structure includes four sliding grooves formed on the base plate and the lumbar support mounting plate. The left end of the scissor arm is rotatably connected to a support shaft, and the outer wall of the support shaft slides and matches the inner wall of the sliding groove. The right ends of the two scissor arms near the base plate are rotatably connected to the base plate via a pivot, and the right ends of the two scissor arms near the lumbar support mounting plate are rotatably connected to the lumbar support mounting plate via a pivot. As a further description of the above technical solution: Both the base plate and the lumbar support mounting plate have mounting protrusions on their left sides. The mounting protrusions extend outward in a horizontal direction, and buffer springs are installed on the two mounting protrusions.

[0006] This utility model has the following beneficial effects: 1. In this utility model, four scissor arms are connected by hinge shafts to form a parallelogram mechanism. Combined with the guide structure of the sliding groove and the support shaft, the stability of the lumbar support adjustment is achieved. When the crossbeam is subjected to the tension of the steel wire rope, the support shaft slides synchronously in the sliding groove, providing precise guidance for the deformation of the mechanism and effectively preventing jamming and deviation. The buffer spring continuously provides rebound force, eliminating the impact of movement during adjustment, and automatically pushing the mechanism to reset when the steel wire rope slackens. The synergistic cooperation of this scissor arm mechanism, the guide structure, and the buffer spring makes the lumbar support adjustment smooth, precise, and controllable, significantly improving the user experience and the life of the mechanism.

[0007] 2. In this invention, when the user rotates the handle, the threaded engagement converts the rotational motion into axial movement of the threaded rod, precisely changing the effective length of the wire rope. The connecting shaft provides radial support to prevent swaying, the guide sleeve ensures smooth transmission, and the self-locking characteristic of the threaded structure allows the lumbar support to remain stable in any position, bearing the pressure of the human body without displacement, eliminating the need for an additional locking mechanism. This adjustment mechanism is compact, easy to operate, precise in adjustment, and reliably self-locking, reducing manufacturing costs and ensuring adjustment stability. Attached Figure Description

[0008] Figure 1 This is a perspective view of the adjustable back support gaming chair proposed in this utility model. Figure 2 This is a schematic diagram of the base plate of the adjustable back support gaming chair proposed in this utility model; Figure 3 This is a schematic diagram of the initial state of the adjustable back support gaming chair proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the fixing cylinder of the adjustable back support gaming chair proposed in this utility model.

[0009] Legend: 1. Base plate; 2. Lumbar support mounting plate; 3. Scissor arm; 4. Hinge shaft; 5. Slide groove; 6. Support shaft; 7. Crossbeam; 8. First mounting part; 9. Fixing plate; 10. Mounting hole; 11. Steel wire rope; 12. Second mounting part; 13. Fixing block; 14. Guide sleeve; 15. Fixing cylinder; 16. Threaded rod; 17. Connecting shaft; 18. Rotating handle; 19. Cavity; 20. End; 21. Mounting side plate; 22. Buffer spring. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of an adjustable gaming chair with back support, comprising a gaming chair body, a lumbar support mounted on the gaming chair body, and an adjustment assembly between the lumbar support and the gaming chair body. The adjustment assembly includes a base plate 1 and a lumbar support mounting plate 2 connected to the lumbar support. The base plate 1 serves as the mounting base for the entire adjustment structure, used to fix it to the internal frame of the seat back, providing a stable support platform for the entire mechanism. The lumbar support mounting plate 2 serves as the direct bearing surface of the lumbar support component, and its displacement relative to the base plate 1 directly determines the degree of protrusion of the lumbar support. The base plate 1 and the lumbar support mounting plate 2 are connected by four scissor arms 3 and a guide structure. The middle parts of the four scissor arms 3 are connected by two hinge shafts 4 to form a parallelogram mechanism. The parallelogram mechanism formed by the four scissor arms 3 is the core moving part of the entire adjustment structure. The component achieves vertical displacement of the lumbar support mounting plate 2 through changes in its geometric shape. The hinge shaft 4 provides a rotation fulcrum between the scissor arms 3, ensuring that the parallelogram mechanism can deform smoothly. The ends of the two scissor arms 3 near the center of the base plate 1 are fixedly connected to a crossbeam 7. A second mounting part 12 is provided on the base plate 1. A steel wire rope 11 is provided between the crossbeam 7 and the second mounting part 12 through a mounting mechanism. The end of the steel wire rope 11 away from the crossbeam 7 passes through the second mounting part 12 and extends outward. The crossbeam 7 serves as the point of application of the driving force, converting the tension transmitted by the steel wire rope 11 into a driving force on the scissor arms 3. Its movement towards the center or outward directly controls the angle change of the parallelogram mechanism. The second mounting part 12 provides a fixed exit position for the steel wire rope 11, ensuring the stability of the transmission path of the steel wire rope 11. The guiding structure includes four sliding grooves 5 formed on the base plate 1 and the lumbar support mounting plate 2. The left end of the scissor arm 3 is rotatably connected to a support shaft 6. The outer wall of the support shaft 6 slides and matches the inner wall of the sliding groove 5. The sliding groove 5 provides a precise sliding trajectory for the support shaft 6, guiding the scissor arm 3 to maintain the correct direction of movement during deformation and preventing the mechanism from jamming or deviating. The right ends of the two scissor arms 3 closest to the base plate 1 are rotatably connected to the base plate 1 through pivots. These pivots provide the scissor arms 3 with rotational freedom relative to the base plate 1 and are the key hinge points for the parallelogram mechanism to achieve deformation. The right ends of the two scissor arms 3 closest to the lumbar support mounting plate 2 are rotatably connected to the lumbar support mounting plate 2 through pivots. These pivots allow the lumbar support mounting plate 2 to generate vertical displacement as the scissor arms 3 expand or contract. Mounting protrusions are provided on the left side of both the base plate 1 and the lumbar support mounting plate 2. The mounting protrusions extend outward in the horizontal direction. Buffer springs 22 are installed on the two mounting protrusions. The buffer springs 22 continuously provide outward rebound force, which on the one hand provides a buffering effect during the adjustment process to ensure smooth movement without impact, and on the other hand helps the mechanism to automatically reset when the wire rope 11 is slack.

[0012] Reference Figure 3 and Figure 4 The installation mechanism includes a first mounting part 8 opened on the crossbeam 7. A fixing plate 9 is installed on the inner wall of the first mounting part 8. The fixing plate 9 is provided with two mounting holes 10. The end of the wire rope 11 near the crossbeam 7 is fixedly connected to the fixing plate 9. The first mounting part 8 provides installation space for fixing the wire rope 11 at the end of the crossbeam 7, ensuring that the wire rope 11 can be firmly connected to the fixing plate 9. The fixing plate 9 is fixedly connected to the crossbeam 7 by fasteners through the two mounting holes 10. The mounting holes 10 are used to pass through the fasteners to firmly install the fixing plate 9 on the crossbeam 7, ensuring that the fixing plate 9 will not loosen when the wire rope 11 is under tension. A fixing block 13 is fixedly connected to the outer wall of the second mounting part 12. A guide sleeve 14 is fixedly installed at the right end of the fixing block 13. The outer wall of the wire rope 11 slides through the inside of the fixing block 13 and the guide sleeve 14. The fixing block 13 provides intermediate support and guidance for the wire rope 11, so that the wire rope 11 maintains the correct path during transmission. The guide sleeve 14 provides guiding support for the wire rope 11.

[0013] Reference Figure 1 , Figure 3 and Figure 5An adjustment mechanism is connected to the end of the wire rope 11 away from the crossbeam 7. The adjustment mechanism is used to control the horizontal distance between the crossbeam 7 and the second mounting part 12 by adjusting the effective length of the wire rope 11. The adjustment mechanism includes a fixed cylinder 15 fixedly connected to the right end of the guide sleeve 14. A threaded rod 16 is threadedly connected to the inner wall of the fixed cylinder 15. The fixed cylinder 15 serves as the housing of the adjustment mechanism and provides an inner wall for the threaded rod 16. A connecting shaft 17 is fixedly connected to the right end of the threaded rod 16. The outer wall of the connecting shaft 17 slides in contact with the inner wall of the fixed cylinder 15. A rotating handle 18 is fixedly connected to the right end of the connecting shaft 17. The connecting shaft 17 plays a connecting role, on the one hand connecting the threaded rod 16 and the rotating handle 18 to achieve torque transmission, and on the other hand, the sliding contact between its smooth outer wall and the inner wall of the fixed cylinder 15 provides radial torque transmission for the threaded rod 16. The threaded rod 16 is supported to prevent it from shaking during rotation. A cavity 19 is provided inside the threaded rod 16. The right end of the wire rope 11 is fixedly connected to the end 20. The outer wall of the end 20 is tightly fitted with the inner wall of the cavity 19 and can slide relative to it. The cavity 19 is used to accommodate the end 20 of the wire rope 11, so that the wire rope 11 can be pulled out or released as the threaded rod 16 moves. The threaded rod 16 is the key component for converting rotational motion into linear motion. Its threaded engagement with the fixed cylinder 15 converts the rotation of the handle 18 into the axial movement of the threaded rod 16, thereby changing the effective length of the wire rope 11. A mounting side plate 21 is fixedly connected to the front side of the fixed cylinder 15. The mounting side plate 21 is used to fix the entire adjustment mechanism to the seat frame or other support structure to ensure the stability of the adjustment mechanism during use.

[0014] Working principle: When the lumbar support needs adjustment, the parallelogram mechanism composed of four scissor arms 3 begins to deform. Since the ends of the two scissor arms 3 closest to the center of the base plate 1 are fixedly connected to the crossbeam 7, when the crossbeam 7 is subjected to the tension of the wire rope 11, it will move towards the center along the plane of the base plate 1. At the same time, the support shaft 6 at the left end of the scissor arm 3 slides synchronously in the slide groove 5, guiding the entire mechanism to deform smoothly. As the crossbeam 7 moves closer to the center, the included angle of the parallelogram gradually increases, forcing the lumbar support mounting plate 2 to move upward relative to the base plate 1, thereby increasing the protrusion of the lumbar support. Conversely, when the crossbeam 7 moves outward, the included angle of the parallelogram decreases, and the lumbar support mounting plate 2 retracts backward. Throughout the entire movement, the buffer spring 22 on the left mounting plate always provides a moderate rebound force to ensure smooth and impact-free movement, and at the same time helps the mechanism to reset when the wire rope 11 is slack. The adjustment action begins with the user rotating the handle 18. When the handle is rotated clockwise, it drives the connecting shaft 17 and the threaded rod 16 to rotate synchronously. Since the threaded rod 16 is threadedly connected to the inner wall of the fixed cylinder 15, the rotational motion is immediately converted into a linear motion of the threaded rod 16 to the right. The right end 20 of the wire rope 11 is embedded in the cavity 19 inside the threaded rod 16. As the threaded rod 16 moves to the right, the wire rope 11 is gradually pulled out, and the effective working length is shortened. This change transmits the tension to the crossbeam 7 through the wire rope 11, forcing the crossbeam 7 to move closer to the center of the base plate 1. This drives the scissor arm 3 to unfold, and the lumbar support mounting plate 2 protrudes upward. When the handle is rotated counterclockwise, the threaded rod 16 moves to the left, and the effective length of the wire rope 11 increases. Under the action of the buffer spring 22, the lumbar support mounting plate 2 retracts accordingly. The sliding contact between the connecting shaft 17 and the inner wall of the fixed cylinder 15 ensures that the threaded rod 16 will not shake, while the guide sleeve 14 provides a smooth guide for the wire rope 11, making the entire adjustment process precise, smooth, and without jamming. The self-locking characteristic of the threaded structure allows the lumbar support to remain stable in any position and will not be displaced due to human body pressure.

[0015] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gaming chair with adjustable back support, comprising a gaming chair body, a lumbar support mounted on the gaming chair body, and an adjustment assembly between the lumbar support and the gaming chair body, the adjustment assembly comprising a base plate (1) and a lumbar support mounting plate (2) connected to the lumbar support, characterized in that: The base plate (1) and the lumbar support mounting plate (2) are connected by four scissor arms (3) and a guide structure. The middle of the four scissor arms (3) are connected by two hinge shafts (4) to form a parallelogram mechanism. The ends of the two scissor arms (3) near the center of the base plate (1) are fixedly connected to a crossbeam (7). A second mounting part (12) is provided on the base plate (1). A steel wire rope (11) is provided between the crossbeam (7) and the second mounting part (12) through a mounting mechanism. The end of the steel wire rope (11) away from the crossbeam (7) passes through the second mounting part (12) and extends outward. An adjustment mechanism is connected to one end of the wire rope (11) away from the crossbeam (7). The adjustment mechanism is used to control the horizontal distance between the crossbeam (7) and the second mounting part (12) by adjusting the effective length of the wire rope (11).

2. The gaming chair with adjustable back support according to claim 1, characterized in that: The installation mechanism includes a first installation part (8) opened on the crossbeam (7), and a fixing plate (9) is installed on the inner wall of the first installation part (8). The fixing plate (9) is provided with two mounting holes (10). The end of the wire rope (11) near the crossbeam (7) is fixedly connected to the fixing plate (9). The fixing plate (9) is fixedly connected to the crossbeam (7) through the two mounting holes (10) by fasteners.

3. The gaming chair with adjustable back support according to claim 1, characterized in that: The outer wall of the second mounting part (12) is fixedly connected to a fixing block (13), and a guide sleeve (14) is fixedly installed on the right end of the fixing block (13). The outer wall of the wire rope (11) slides through the inside of the fixing block (13) and the guide sleeve (14), and the guide sleeve (14) provides guidance and support for the wire rope (11).

4. The gaming chair with adjustable back support according to claim 3, characterized in that: The adjustment mechanism includes a fixed cylinder (15) fixedly connected to the right end of the guide sleeve (14), a threaded rod (16) threadedly connected to the inner wall of the fixed cylinder (15), a connecting shaft (17) fixedly connected to the right end of the threaded rod (16), and a rotating handle (18) fixedly connected to the right end of the connecting shaft (17).

5. The gaming chair with adjustable back support according to claim 4, characterized in that: The threaded rod (16) has a cavity (19) inside. The right end of the wire rope (11) is fixedly connected to an end (20). The outer wall of the end (20) is tightly fitted with the inner wall of the cavity (19) and can slide relative to each other.

6. The gaming chair with adjustable back support according to claim 4, characterized in that: The outer wall of the connecting shaft (17) slides in contact with the inner wall of the fixed cylinder (15), and the front side of the fixed cylinder (15) is fixedly connected with a mounting side plate (21).

7. The gaming chair with adjustable back support according to claim 1, characterized in that: The guide structure includes four sliding grooves (5) formed on the base plate (1) and the lumbar support mounting plate (2). The left end of the scissor arm (3) is rotatably connected to a support shaft (6). The outer wall of the support shaft (6) slides and matches the inner wall of the sliding groove (5). The right ends of the two scissor arms (3) near the base plate (1) are rotatably connected to the base plate (1) through a rotating shaft. The right ends of the two scissor arms (3) near the lumbar support mounting plate (2) are rotatably connected to the lumbar support mounting plate (2) through a rotating shaft.

8. The gaming chair with adjustable back support according to claim 1, characterized in that: The bottom plate (1) and the waist support mounting plate (2) are both provided with mounting protrusions on the left side. The mounting protrusions extend outward in the horizontal direction, and buffer springs (22) are installed on the two mounting protrusions.

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