Office chair with reclining function
By combining the balance adjustment mechanism and the lumbar support mechanism, the stability and comfort issues of the office chair in a reclining position are solved, enabling flexible center of gravity adjustment and precise control of support force, thus improving the user experience of the office chair.
Patent Information
- Application Number
- CN202521976504.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-15
AI Technical Summary
Existing office chairs with reclining functions have unstable chassis when reclining, making them prone to tipping over. Furthermore, increasing the chassis area takes up a lot of space and makes them inconvenient to move.
It adopts a balance adjustment mechanism, a waist support mechanism, and a leg support mechanism. Through the combined use of components such as sliders, slide bars, and electric telescopic bars, it can achieve precise control of the center of gravity adjustment and support force, avoid the chassis occupying space, and enhance stability.
It achieves stable support for the office chair in a reclining position, avoiding increased space occupation and inconvenience in movement, and improving the flexibility and comfort of use.
Smart Images
Figure CN224671126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furniture manufacturing technology, and in particular to an office chair with a reclining function. Background Technology
[0002] Office chairs are specialized seats designed to improve office comfort and efficiency. They combine functionality and ergonomics and are equipped with height-adjustable gas springs to accommodate users of different heights. As people's demands for comfort and functionality in the office environment increase, office chairs with reclining functions are gradually becoming a new choice.
[0003] Office chairs with reclining functions retain the basic advantages of traditional office chairs, such as height adjustment and backrest conforming to the spine. Through a special mechanical structure design, the backrest can tilt significantly backward, even forming a near-flat angle with the seat. Combined with a retractable footrest, users can switch to a resting state at any time during work breaks, providing support and perfectly balancing work and relaxation.
[0004] While reclining office chairs meet people's need for brief relaxation during busy breaks, insufficient support from the chassis and legs causes a shift in the user's center of gravity when the chair is in a reclining position. An unreasonable chassis design or insufficient leg strength can lead to instability and even the risk of tipping over. Current solutions involve increasing the chassis area to expand the contact area with the ground, thereby improving stability and reducing the probability of tipping. However, larger chassis take up more space, making them unsuitable for office environments with limited space. Furthermore, they are difficult to move, which is inconvenient for users who frequently need to adjust the chair's position. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an office chair with a reclining function, aiming to improve the problems of existing technologies that require more space due to the increased chassis area and are difficult to move.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an office chair with a reclining function, comprising a chassis and two chair legs, wherein a balance adjustment mechanism is provided at the bottom of the chassis, a chair back is rotatably connected to the left side of the chassis, a lumbar support mechanism is provided at the top of the chair back, and a leg support mechanism is provided at the bottom of the chassis.
[0007] The balance adjustment mechanism includes two fixed shells, the tops of which are fixedly connected to the bottom of the chassis. Sliding blocks are slidably connected to the inner walls of both fixed shells. Gravity blocks are fixedly connected to the bottoms of both sliding blocks. Sliding grooves are provided on the left sides of both chair legs. Sliding rods are slidably connected to the inner walls of both sliding grooves. The same connecting rod is fixedly connected to adjacent sides of both sliding rods. Grounding blocks are fixedly connected to the left ends of both sliding rods. Placement grooves are provided on the outer walls of both sliding rods. A limit assembly and a positioning assembly are provided at the bottom of the chassis.
[0008] As a further description of the above technical solution:
[0009] The lumbar support mechanism includes a fixed shell II. The outer wall of the fixed shell II is fixedly connected to the inner wall of the chair back. Multiple electric telescopic rods are fixedly connected to the bottom of the inner wall of the fixed shell II. The top of each of the multiple electric telescopic rods is fixedly connected to the same connecting plate I. Multiple springs are fixedly connected to the top of the connecting plate I. Multiple telescopic columns are fixedly connected to the top of the connecting plate I. The top of each of the multiple telescopic columns is fixedly connected to the same connecting plate II. A rubber pad is fixedly connected to the top of the inner wall of the fixed shell II. A guide assembly is provided inside the fixed shell II.
[0010] As a further description of the above technical solution:
[0011] The support mechanism includes two sliding shells, the tops of which are fixedly connected to the bottom right side of the chassis. The inner walls of the two sliding shells are slidably connected to extension rods, and the right ends of the two extension rods are rotatably connected to the same support plate.
[0012] As a further description of the above technical solution:
[0013] The limiting component includes two elastic strips. The left sides of the two elastic strips are fixedly connected to the left side of the inner wall of the two mounting slots. Limiting buckles are fixedly connected to the opposite sides of the two elastic strips. Multiple limiting holes are provided on the opposite sides of the two chair legs.
[0014] As a further description of the above technical solution:
[0015] The positioning component includes two positioning pins, the outer walls of the two positioning pins are slidably connected to the outer walls of the two fixed shells, the outer walls of the two fixed shells are provided with multiple positioning holes, and the opposite sides of the two positioning pins are threaded with sleeves.
[0016] As a further description of the above technical solution:
[0017] The guiding assembly includes multiple guide posts, the top ends of which are fixedly connected to the bottom of the connecting plate 2. The outer wall of the connecting plate 1 has multiple guide holes.
[0018] As a further description of the above technical solution:
[0019] The chassis has support bars rotatably connected to both the front and rear sides of its outer wall, and handrails are rotatably connected to the left side of each of the two support bars.
[0020] As a further description of the above technical solution:
[0021] A connecting strip is fixedly connected to one side of each of the two chair legs, and two reinforcing ribs are fixedly connected to the top of the outer wall of each of the two chair legs.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, by first releasing the sleeve from the restriction of the positioning pin, and then removing the positioning pin, the sliding block and the gravity block can slide left and right. After the office chair is balanced, the positioning pin is reset and fixed. At the same time, the limit buckle is pressed and the slide rod is pushed to extend to the left. After the adjustment is completed, the limit buckle is rebounded by the elastic strip, thereby fixing the position of the slide rod. The dual adjustment avoids the difficulties of large space occupation and inconvenient movement of the device, and makes the adjustment of the device flexible and increases the stability of the device.
[0024] 2. In this utility model, the connecting plate is moved upward by activating the electric telescopic rod. After the power is transmitted through the spring and telescopic column, the rubber pad can fit the waist. The guide component ensures that the connecting plate can move smoothly. The device uses the telescopic rod to precisely control the pressure, and the spring and rubber pad improve the comfort of waist support, so that the device can meet the needs of different users. Attached Figure Description
[0025] Figure 1 This is a perspective view of an office chair with a reclining function proposed in this utility model;
[0026] Figure 2 This is a front view of an office chair with a reclining function proposed in this utility model;
[0027] Figure 3 This is a side view of an office chair with a reclining function proposed in this utility model;
[0028] Figure 4 This is a cross-sectional view of the fixing shell of an office chair with a reclining function proposed in this utility model;
[0029] Figure 5 This is a cross-sectional view of the fixing shell 2 of an office chair with a reclining function proposed in this utility model;
[0030] Figure 6 This is a cross-sectional view of the legs of an office chair with a reclining function proposed in this utility model.
[0031] Legend:
[0032] 1. Chassis; 2. Chair legs; 3. Balance adjustment mechanism; 301. Fixed shell one; 302. Slider; 303. Gravity block; 304. Slide groove; 305. Slide rod; 306. Connecting rod; 307. Grounding block; 308. Mounting groove; 309. Limiting component; 3091. Elastic strip; 3092. Limiting buckle; 3093. Limiting hole; 310. Positioning component; 3101. Positioning hole; 3102. Positioning pin; 3103. Sleeve; 4. 5. Backrest; 501. Lumbar support mechanism; 502. Fixed shell II; 503. Electric telescopic rod; 504. Connecting plate I; 505. Spring; 506. Telescopic column; 507. Connecting plate II; 508. Rubber pad; 508. Guide assembly; 5081. Guide column; 5082. Guide hole; 6. Leg support mechanism; 601. Sliding shell; 602. Extension rod; 603. Support plate; 7. Armrest; 8. Support bar; 9. Connecting bar; 10. Reinforcing rib. Detailed Implementation
[0033] 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.
[0034] Reference Figure 3 , Figure 4 and Figure 6 An embodiment of this utility model provides: an office chair with a reclining function, including a chassis 1 and two chair legs 2. The bottom of the chassis 1 is provided with a balance adjustment mechanism 3, which is used to adjust the balance of the chair when the backrest 4 is flat. The left side of the chassis 1 is rotatably connected to the backrest 4. The top of the backrest 4 is provided with a lumbar support mechanism 5, which can be used to support the waist more comfortably. The bottom of the chassis 1 is provided with a leg support mechanism 6, which is used to support the legs.
[0035] The balance adjustment mechanism 3 includes two fixed shells 301, which provide movement space and guide the sliders 302. The tops of both fixed shells 301 are fixedly connected to the bottom of the chassis 1. The sliders 302 are slidably connected to the inner walls of both fixed shells 301. Gravity blocks 303 are fixedly connected to the bottoms of both sliders 302, allowing the center of gravity of the chair to be adjusted via the gravity blocks 303. Slide grooves 304 are provided on the left sides of both chair legs 2, facilitating the adjustment of the length of the slide rods 305. Slide rods 305 are slidably connected to the inner walls of both slide grooves 304, providing more stable support for the office chair by stretching the slide rods 305. The adjacent slide rods 305... One side is fixedly connected to the same connecting rod 306. The connecting rod 306 is used to enhance the connection and keep the extension length of the two sliding rods 305 consistent. The left end of the two sliding rods 305 is fixedly connected to a grounding block 307. The grounding block 307 is in direct contact with the ground, which can reduce vibration and increase friction. The outer wall of the two sliding rods 305 is provided with a mounting groove 308. The mounting groove 308 is used to install the limiting component 309. The bottom of the chassis 1 is provided with a limiting component 309. The limiting component 309 can fix and limit the position of the sliding rod 305. The bottom of the chassis 1 is provided with a positioning component 310. The positioning component 310 is used to fix the position of the gravity block 303.
[0036] The limiting component 309 includes two elastic strips 3091. The elastic strips 3091 provide outward elasticity to the limiting buckle 3092, ensuring that the limiting buckle 3092 can always slide into the limiting hole 3093. The left sides of both elastic strips 3091 are fixedly connected to the left side of the inner wall of both mounting grooves 308. The limiting buckles 3092 are fixedly connected to the opposite sides of both elastic strips 3091. Multiple limiting holes 3093 are provided on the opposite sides of both chair legs 2. By sliding the limiting buckles 3092 into the limiting holes 3093, the sliding rod 3092 is secured. The position of 5 is fixed. The positioning component 310 includes two positioning pins 3102. The outer walls of the two positioning pins 3102 are slidably connected to the outer walls of the two fixed shells 301. The outer walls of the two fixed shells 301 are provided with multiple positioning holes 3101. By sliding the positioning pins 3102 into the appropriate positioning holes 3101 and through the slider 302, the position of the gravity block 303 is fixed. The two positioning pins 3102 are threaded to the opposite sides and are connected to sleeves 3103. The sleeves 3103 are used to fix the position of the positioning pins 3102.
[0037] Specifically, when switching the office chair to a reclining position, first adjust the position of the gravity block 303. Loosen the sleeve 3103 by rotating it, pull out the positioning pin 3102 and disengage it from the positioning hole 3101. Push the slider 302 to slide within the fixed housing 301, causing the bottom gravity block 303 to move left and right to adjust the center of gravity of the office chair. After the center of gravity is stable, insert the positioning pin 3102 into the corresponding positioning hole 3101 and through the slider 302. Tighten the sleeve 3103 to fix the position of the gravity block 303. Then press the limit buckle 3092 to make the limit buckle 309... 2. Compress the elastic strip 3091 and disengage it from the limiting hole 3093 of the chair leg 2. Push the connecting rod 306 to drive the sliding rods 305 on both sides to slide to the left along the sliding groove 304. At the same time, the ground block 307 contacts the ground. When stretched to the appropriate position, the elastic strip 3091 rebounds, causing the limiting buckle 3092 to engage with the corresponding limiting hole 3093, thus completing the fixation of the sliding rod 305. The gravity block 303 balances the center of gravity and the extension of the sliding rod 305 to increase the support surface, achieving stable support in the flat state of the office chair. This avoids increasing the space occupied by the chassis 1 and enhances stability.
[0038] Reference Figure 1 , Figure 2 and Figure 5 The lumbar support mechanism 5 includes a second fixed housing 501, which provides a position for the lumbar support components. The outer wall of the second fixed housing 501 is fixedly connected to the inner wall of the chair back 4. Multiple electric telescopic rods 502 are fixedly connected to the bottom of the inner wall of the second fixed housing 501. The electric telescopic rods 502 are used to adjust the fit between the back of the seat and the user. The top of each of the multiple electric telescopic rods 502 is fixedly connected to the same connecting plate 503. Multiple springs 504 are fixedly connected to the top of the connecting plate 503. The multiple springs 504 are used to reduce vibration. Multiple telescopic columns 505 are fixedly connected to the top of the connecting plate 503. The telescopic columns 505 are used to guide the extension direction of the spring 504. The top of the multiple telescopic columns 505 are all fixedly connected to the same connecting plate 506. The connecting plate 506 is used to prevent the spring 504 from bulging locally. A rubber pad 507 is fixedly connected to the top of the inner wall of the fixing shell 501. The rubber pad 507 is used to increase comfort and increase friction. A guide assembly 508 is provided inside the fixing shell 501. The guide assembly 508 provides guidance for the movement of the two connecting plates.
[0039] The guide assembly 508 includes multiple guide posts 5081, the top ends of which are fixedly connected to the bottom of the connecting plate 506. The outer wall of the connecting plate 503 has multiple guide holes 5082, and the guide posts 5081 are slidably connected to the corresponding guide holes 5082.
[0040] Specifically, when lumbar support needs adjustment, the electric telescopic rod 502 is activated, causing it to extend and push the connecting plate 503 upward. This causes the spring 504 and telescopic column 505 to extend synchronously, further pushing the connecting plate 506 upward. This allows the rubber pad 507 to gradually conform to the lumbar region. During adjustment, the guide column 5081 slides along the guide hole 5082 in the connecting plate 503, ensuring the smooth movement of the connecting plate 506. The spring 504 can adapt to the force on the lumbar region, and together with the rubber pad 507, it enhances the comfort of the fit. When the support needs to be weakened, the electric telescopic rod 502 is retracted, the spring 504 rebounds, and all components return to their original positions. By adjusting the extension and retraction of the telescopic rod, the device achieves precise control of the lumbar support force. A pressure sensor can also be installed for more precise adaptive adjustment of the support force, allowing the office chair to adapt to the lumbar support needs of different users.
[0041] Reference Figure 1 , Figure 2 and Figure 6 The leg support mechanism 6 includes two sliding shells 601. The sliding shells 601 restrict the movement direction of the extension rod 602, allowing the extension rod 602 to move left and right. The tops of both sliding shells 601 are fixedly connected to the bottom right side of the chassis 1. Extension rods 602 are slidably connected to the inner walls of both sliding shells 601. The extension rods 602 extend the position of the support plate 603. The right ends of both extension rods 602 are rotatably connected to the same support plate 603, which supports the legs. The outer wall of the chassis 1... Support bars 8 are rotatably connected to both the front and back sides. After the backrest 4 is folded down, the connection and support are increased through the rotatable connection between the support bars 8 and the armrests 7. Armrests 7 are rotatably connected to the left side of both support bars 8. The armrests 7 are rotatably connected to the shells on the front and back sides of the backrest 4. Connecting bars 9 are fixedly connected to the adjacent sides of the two chair legs 2. The connecting bars 9 can prevent the chair legs 2 from tilting outward. Two reinforcing ribs 10 are fixedly connected to the top of the outer wall of both chair legs 2. The top of the reinforcing ribs 10 are connected to the chassis 1 to increase the support strength.
[0042] Specifically, when the leg support function is needed, pulling the support plate 603 causes the extension rod 602 to slide to the right along the inner wall of the sliding shell 601 until the support plate 603 extends to a suitable length to support the legs. At the same time, when the chair back 4 is reclined, the armrest 7 rotates with the chair back 4, causing the support bar 8 to rotate synchronously and form a stable connection with the armrest 7, enhancing the overall support of the chair back 4 after reclining. The connecting bar 9 can reinforce the connection between the two chair legs 2, preventing the chair legs 2 from tilting outward due to pressure. The reinforcing rib 10 connects the chair legs 2 to the chassis 1, further improving the strength of the support. When folding up the office chair, pushing the support plate 603 causes the extension rod 602 to retract into the sliding shell 601, and lifting the chair back 4 causes the armrest 7 and support bar 8 to return to their original positions, completing the storage of the leg support mechanism 6 and auxiliary support components.
[0043] Working principle: When the office chair is switched to the reclining position, first loosen the sleeve 3103 to disengage the positioning pin 3102 from the positioning hole 3101, allowing the slider 302 to slide within the fixed housing 301, causing the gravity block 303 to move left and right until the center of gravity is balanced. Then, insert the positioning pin 3102 into the corresponding positioning hole 3101 and tighten the sleeve 3103 to fix the position of the gravity block 303. Finally, press the limit buckle 3092 to compress the elastic strip 3091, thus limiting the movement. The buckle 3092 disengages from the limiting hole 3093, and then the connecting rod 306 is pushed to drive the slide rod 305 to slide along the slide groove 304 opened in the chair leg 2. After extending to the appropriate position, the elastic strip 3091 rebounds to make the limiting buckle 3092 snap into the corresponding limiting hole 3093, thereby fixing the slide rod 305. Through the dynamic balance of the center of gravity by the gravity block 303 and the dual adjustment of the slide rod 305 extending to expand the support range, the problems of the chassis 1 occupying a lot of space and the inconvenience of moving the office chair are avoided.
[0044] Furthermore, by activating the electric telescopic rod 502, the telescopic rod extends and pushes the connecting plate 503 upward, causing the spring 504 and telescopic column 505 to extend synchronously. This, in turn, pushes the connecting plate 506 upward to press the rubber pad 507 against the waist. During adjustment, the guide column 5081 slides along the guide hole 5082, ensuring that the connecting plate 506 can move smoothly. The spring 504 can adapt to the force on the waist, and together with the rubber pad 507, it enhances comfort. When it is necessary to reduce support, the electric telescopic rod 502 is retracted, causing the spring 504 to rebound and drive all components to reset. By controlling the extension and retraction of the telescopic rod, the support force for the waist can be precisely adjusted. With the addition of a pressure sensor, more precise adaptive adjustment can be achieved, meeting the waist support needs of different users and realizing the adjustment of waist support force.
[0045] 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. An office chair with a reclining function, comprising a chassis (1) and two chair legs (2), characterized in that: The bottom of the chassis (1) is provided with a balance adjustment mechanism (3), the left side of the chassis (1) is rotatably connected with a chair back (4), the top of the chair back (4) is provided with a waist support mechanism (5), and the bottom of the chassis (1) is provided with a leg support mechanism (6). The balance adjustment mechanism (3) includes two fixed shells (301), the tops of which are fixedly connected to the bottom of the chassis (1). The inner walls of the two fixed shells (301) are slidably connected to sliders (302). The bottoms of the two sliders (302) are fixedly connected to gravity blocks (303). The left sides of the two chair legs (2) are provided with sliding grooves (304). The inner walls of the two sliding grooves (304) are slidably connected to sliding rods (305). The adjacent sides of the two sliding rods (305) are fixedly connected to the same connecting rod (306). The left ends of the two sliding rods (305) are fixedly connected to grounding blocks (307). The outer walls of the two sliding rods (305) are provided with mounting grooves (308). The bottom of the chassis (1) is provided with a limit component (309) and a positioning component (310).
2. The office chair with a reclining function according to claim 1, characterized in that: The lumbar support mechanism (5) includes a fixed shell two (501), the outer wall of the fixed shell two (501) is fixedly connected to the inner wall of the chair back (4), a plurality of electric telescopic rods (502) are fixedly connected to the bottom of the inner wall of the fixed shell two (501), the top of the plurality of electric telescopic rods (502) is fixedly connected to the same connecting plate one (503), the top of the connecting plate one (503) is fixedly connected to a plurality of springs (504), the top of the connecting plate one (503) is fixedly connected to a plurality of telescopic columns (505), the top of the plurality of telescopic columns (505) is fixedly connected to the same connecting plate two (506), the top of the inner wall of the fixed shell two (501) is fixedly connected to a rubber pad (507), and a guide component (508) is provided inside the fixed shell two (501).
3. The office chair with a reclining function according to claim 1, characterized in that: The support mechanism (6) includes two sliding shells (601). The tops of the two sliding shells (601) are fixedly connected to the bottom right side of the chassis (1). The inner walls of the two sliding shells (601) are slidably connected to extension rods (602). The right ends of the two extension rods (602) are rotatably connected to the same support plate (603).
4. An office chair with a reclining function according to claim 1, characterized in that: The limiting component (309) includes two elastic strips (3091), the left sides of the two elastic strips (3091) are fixedly connected to the left side of the inner wall of the two mounting grooves (308), the opposite sides of the two elastic strips (3091) are fixedly connected to limiting buckles (3092), and the opposite sides of the two chair legs (2) are provided with multiple limiting holes (3093).
5. An office chair with a reclining function according to claim 1, characterized in that: The positioning component (310) includes two positioning pins (3102). The outer walls of the two positioning pins (3102) are slidably connected to the outer walls of the two fixed shells (301). The outer walls of the two fixed shells (301) are provided with multiple positioning holes (3101). The opposite sides of the two positioning pins (3102) are threaded with sleeves (3103).
6. An office chair with a reclining function according to claim 2, characterized in that: The guide assembly (508) includes a plurality of guide posts (5081), the top ends of which are fixedly connected to the bottom of the second connecting plate (506), and the outer wall of the first connecting plate (503) is provided with a plurality of guide holes (5082).
7. An office chair with a reclining function according to claim 1, characterized in that: The chassis (1) has support bars (8) rotatably connected to the front and rear sides of its outer wall, and handrails (7) rotatably connected to the left side of each of the two support bars (8).
8. An office chair with a reclining function according to claim 1, characterized in that: A connecting strip (9) is fixedly connected to the adjacent side of the two chair legs (2), and two reinforcing ribs (10) are fixedly connected to the top of the outer wall of each of the two chair legs (2).