Adjustable armrest structure of human engineering seat

Abstract

The utility model relates to the technical field of seat armrests, and discloses an adjustable armrest structure of an ergonomic seat, which comprises a seat plate, the front side and the rear side of the top of the seat plate are fixedly connected with supporting shells, the outer walls of the supporting shells are slidably connected with moving blocks, the left side and the right side of each supporting shell are slidably connected with a plurality of first pressing blocks, and the first pressing blocks are slidably connected with the moving blocks. First limiting rods are slidably connected between the adjacent first pressing blocks, first springs are fixedly connected to the outer walls of the first limiting rods, a supporting plate is fixedly connected to the top of the moving block, and a square handrail is slidably connected to the outer wall of the supporting plate. A first pressing block is pressed and moved to the outer wall of a limiting rod, a first spring is extruded, a movable block is pulled to the preset height and fixed, meanwhile, a second pressing block drives a clamping rod to move, a second spring is extruded, a square handrail is adjusted to the outer wall of a supporting plate, the square handrail is fixed through the elastic force of the second spring, the height and length of the handrail are adjusted, and the practicability of equipment is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of seat armrest technology, and in particular to an adjustable armrest structure for an ergonomic seat. Background Technology

[0002] An ergonomic chair is a type of chair designed based on ergonomic principles, aiming to provide a comfortable sitting posture and good body support. Following the natural S-curve of the human spine, the backrest's curvature and lumbar support position are designed to provide appropriate support for the lower back and back, reducing spinal pressure, maintaining the spine's natural shape, and reducing fatigue from prolonged sitting. The seat height, width, and depth are rationally designed to accommodate people of different heights and body types. The seat surface should not be too high or too low to avoid obstructing blood circulation in the legs. Adjustable reclining angles allow people to find a comfortable posture while watching TV, playing games, or reading, relaxing the mind and body. Soft seat cushions and breathable mesh materials reduce stuffiness and discomfort. To enhance the chair's functionality, an adjustable armrest structure is necessary.

[0003] Currently available ergonomic chairs with adjustable armrests mainly consist of an adjustment mechanism, armrest surface, and connecting components. During use, the armrests are adjusted via this mechanism to meet the needs of different users and improve the chair's usability. However, the adjustment mechanism is complex and difficult to operate, requiring users to spend considerable time and effort to complete the adjustment. To address these issues, existing technologies have only simplified the adjustment mechanism and adopted a more user-friendly design, without improving the overall adjustment structure. This results in a limited adjustment range, failing to meet the diverse needs of different users, leading to insufficient arm support, fatigue, and discomfort after prolonged use, thus failing to meet user requirements. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an adjustable armrest structure for an ergonomic chair, aiming to improve the existing technology where the adjustment structure has not been improved, the adjustment range is small, and it cannot meet the diverse needs of different users, resulting in the arms not being comfortably supported and easily causing fatigue and discomfort after prolonged use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable armrest structure for an ergonomic chair, comprising a seat plate, a support shell fixedly connected to the front and rear sides of the top of the seat plate, a movable block slidably connected to the outer wall of the support shell, a plurality of pressing blocks slidably connected to the left and right sides of the support shell, a limiting rod slidably connected between adjacent pressing blocks, a spring fixedly connected to the outer wall of the limiting rod, a support plate fixedly connected to the top of the movable block, a square armrest slidably connected to the outer wall of the support plate, a pressing block 2 fixedly connected to the center of the front side of the square armrest, a locking rod fixedly connected to the rear side of the pressing block 2, a limiting rod 2 slidably connected to the upper and lower sides of the rear part of the locking rod, a spring 2 fixedly connected to the outer wall of the limiting rod 2, and a support mechanism provided on the right side of the bottom plate of the seat plate, the support mechanism being used to support the user's feet.

[0006] As a further description of the above technical solution:

[0007] The support mechanism includes a fixed shell, with sliding grooves on the front and rear sides of the fixed shell. A rotating shaft is slidably connected inside the sliding groove. A moving rod is rotatably connected to the outer wall of the rotating shaft. A rotating shaft is rotatably connected to the bottom of the moving rod. A placement plate is rotatably connected to the middle of the outer wall of the rotating shaft. Two anti-slip blocks are fixedly connected to the bottom of the placement plate. A stop bar is fixedly connected to the bottom right side of the rotating shaft.

[0008] As a further description of the above technical solution:

[0009] A seat cushion is fixedly connected to the top of the seat plate, and a cylinder is fixedly connected to the middle of the bottom side of the seat plate.

[0010] As a further description of the above technical solution:

[0011] A back plate is fixedly connected to the left side of the seat plate, and a fixing block is fixedly connected to the top left side of the back plate.

[0012] As a further description of the above technical solution:

[0013] A sliding rod is slidably connected inside the fixed block, and a headrest is fixedly connected to the top right side of the sliding rod.

[0014] As a further description of the above technical solution:

[0015] A base is fixedly connected to the bottom of the cylinder, and a retaining ring is fixedly connected to the top of the outer wall of the cylinder.

[0016] As a further description of the above technical solution:

[0017] The base is fixedly connected to casters on all four sides of its bottom, and a sound-absorbing pad is fixedly connected to the outer wall of each caster.

[0018] As a further description of the above technical solution:

[0019] Multiple limiting holes are provided on the opposite side of the support plate, and multiple locking holes are provided on the left and right sides of the support shell.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when in use, press and move the first pressing block to the outer wall of the limiting rod, squeeze the first spring, pull the moving block to the predetermined height and fix it. At the same time, the second pressing block drives the locking rod to move, squeeze the second spring, and adjust the square handrail to the outer wall of the support plate. The spring force of the second spring is used to fix it, so as to realize the adjustment of the height and length of the handrail and enhance the practicality of the equipment.

[0022] 2. In this utility model, in order to support the user's feet, the movable rod is pulled out from the fixed shell and rotated to be perpendicular to the ground, and the placement plate is rotated to be horizontal. After use, it is close to the stop bar, the movable rod is horizontal, and inserted into the fixed shell, so as to realize the quick assembly and disassembly of the support mechanism and improve efficiency. Attached Figure Description

[0023] Figure 1 This is a perspective view of the seat plate of an ergonomic chair with adjustable armrest structure proposed in this utility model.

[0024] Figure 2 This is an exploded view of the fixed shell structure of the adjustable armrest structure of an ergonomic chair proposed in this utility model.

[0025] Figure 3 This is a square armrest structure diagram of an adjustable armrest structure for an ergonomic chair proposed in this utility model;

[0026] Figure 4 This utility model presents a diagram illustrating the support plate structure of an adjustable armrest structure for an ergonomic chair.

[0027] Figure 5 This is a schematic diagram of the back panel structure of an adjustable armrest structure for an ergonomic chair proposed in this utility model.

[0028] Legend:

[0029] 1. Seat plate; 2. Support mechanism; 201. Fixed shell; 202. Sliding groove; 203. Rotating shaft one; 204. Moving rod; 205. Rotating shaft two; 206. Placement plate; 207. Anti-slip block; 208. Stop bar; 3. Support shell; 4. Moving block; 5. Pressing block one; 6. Limiting rod one; 7. Spring one; 8. Support plate; 9. Square armrest; 10. Pressing block two; 11. Locking rod; 12. Limiting rod two; 13. Spring two; 14. Seat cushion; 15. Back plate; 16. Fixed block; 17. Sliding rod; 18. Headrest; 19. Cylinder; 20. Base; 21. Casters; 22. Silent pad; 23. Fixed ring; 24. Limiting hole; 25. Locking hole. Detailed Implementation

[0030] 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.

[0031] Please see the appendix Figure 1 - Appendix Figure 3This utility model provides an embodiment of an adjustable armrest structure for an ergonomic chair, including a seat plate 1. Support shells 3 are fixedly connected to the front and rear top sides of the seat plate 1. Movable blocks 4 are slidably connected to the outer walls of the support shells 3 to provide a flexible adjustment mechanism. Multiple pressing blocks 5 are slidably connected to the left and right sides of the support shells 3. These pressing blocks 5 are designed to allow users to adjust them as needed. Limiting rods 6 are slidably connected between adjacent pressing blocks 5 to ensure that the pressing blocks 5 maintain an appropriate position during use. Springs 7 are fixedly connected to the outer walls of the limiting rods 6, providing a rebound force to the pressing blocks 5 to ensure they quickly return to their initial position after release. A support plate 8 is fixedly connected to the top of the movable blocks 4, providing a stable support surface for the user. A square armrest 9 is slidably connected to the outer wall of seat plate 8. The square armrest 9 provides a comfortable grip experience. A pressing block 2 10 is fixedly connected to the center of the front side of the square armrest 9. The design of the pressing block 2 10 allows users to make precise adjustments. A locking rod 11 is fixedly connected to the rear side of the pressing block 2 10. The locking rod 11 locks the position of the armrest to prevent it from moving accidentally during use. Limiting rods 2 12 are slidably connected to the upper and lower sides of the rear of the locking rod 11. The limiting rods 2 12 ensure that the locking rod 11 can be kept within a predetermined range during operation. A spring 2 13 is fixedly connected to the outer wall of the limiting rod 2 12. The spring 2 13 provides the necessary rebound force for the locking rod 11 to ensure that it can quickly return to the initial position after release. A support mechanism 2 is provided on the right side of the bottom plate of seat plate 1. The support mechanism 2 is used to support the user's feet.

[0032] Specifically, support shells 3 are fixedly connected to the front and rear sides of the top of the seat plate 1. Movable blocks 4 are slidably connected to the outer walls of these support shells 3 to provide a flexible adjustment mechanism. Multiple pressing blocks 5 are slidably connected to the left and right sides of the support shells 3. These pressing blocks 5 are designed to allow users to adjust them as needed. Limiting rods 6 are slidably connected between adjacent pressing blocks 5 to ensure that the pressing blocks 5 maintain their proper position during use. Springs 7 are fixedly connected to the outer walls of the limiting rods 6. The function of the springs 7 is to provide a rebound force to the pressing blocks 5, ensuring that they can quickly return to their initial position after release. A support plate 8 is fixedly connected to the top of the movable blocks 4, providing a stable support surface for the user. A square armrest 9 is slidably connected to the outer wall of the armrest 8. The square armrest 9 is designed to provide a comfortable grip experience. A second pressing block 10 is fixedly connected to the center of the front side of the square armrest 9. The design of the second pressing block 10 allows users to make precise adjustments. A locking lever 11 is fixedly connected to the rear side of the second pressing block 10. The locking lever 11 is used to lock the position of the armrest and prevent it from moving accidentally during use. Limiting rods 12 are slidably connected to the upper and lower rear sides of the locking lever 11. The limiting rods 12 ensure that the locking lever 11 can be kept within a predetermined range during operation. A second spring 13 is fixedly connected to the outer wall of the limiting rod 12. The second spring 13 provides the necessary rebound force for the locking lever 11 to ensure that it can quickly return to the initial position after release.

[0033] Please see the appendix Figure 2 - Appendix Figure 3 The support mechanism 2 includes a fixed shell 201. The fixed shell 201 has sliding grooves 202 on its front and rear sides. A rotating shaft 203 is slidably connected inside the sliding groove 202. A moving rod 204 is rotatably connected to the outer wall of the rotating shaft 203. A rotating shaft 205 is rotatably connected to the bottom of the moving rod 204. A placement plate 206 is rotatably connected to the middle of the outer wall of the rotating shaft 205, so that the placement plate 206 can be adjusted at an angle as needed. Two anti-slip blocks 207 are fixedly connected to the bottom of the placement plate 206 to ensure that the placement plate 206 has sufficient friction. A stop bar 208 is fixedly connected to the bottom right side of the rotating shaft 205. The stop bar 208 prevents the placement plate 206 from moving too far backward during use, thereby ensuring the safety and stability of use.

[0034] Specifically, sliding grooves 202 are provided on the front and rear sides of the fixed shell 201 for sliding. The interior of these sliding grooves 202 can smoothly connect to the first rotating shaft 203. The outer wall of the first rotating shaft 203 has a rotatable structure for rotatably connecting with the moving rod 204. The bottom of the moving rod 204 is also designed with a rotatable connection structure, which is connected to the second rotating shaft 205. The middle of the outer wall of the second rotating shaft 205 is rotatably connected to the placement plate 206, so that the angle of the placement plate 206 can be adjusted as needed. Two anti-slip blocks 207 are fixedly connected to the bottom of the placement plate 206 to ensure that the placement plate 206 has sufficient friction. A stop bar 208 is also fixedly connected to the bottom right side of the second rotating shaft 205. The function of the stop bar 208 is to prevent the placement plate 206 from moving too far backward during use, thereby ensuring the safety and stability of use.

[0035] Please see the appendix Figure 3 - Appendix Figure 4 A seat cushion 14 is fixedly connected to the top of the seat plate 1 to ensure that the user can have a comfortable sitting experience. A cylinder 19 is fixedly connected to the middle of the bottom side of the seat plate 1, so that the seat plate 1 can be height adjusted to adapt to different users' heights and usage habits. A back plate 15 is fixedly connected to the left side of the seat plate 1, and a fixing block 16 is fixedly connected to the top left side of the back plate 15 to provide stable support for the back plate 15. A sliding rod 17 is slidably connected inside the fixing block 16, and a headrest 18 is fixedly connected to the top right side of the sliding rod 17. The headrest 18 is designed to provide neck support to reduce fatigue that may occur during long-term use.

[0036] Specifically, the top of the seat plate 1 is fixedly connected to the seat cushion 14, ensuring a comfortable sitting experience for the user. The bottom center of the seat plate 1 is fixedly connected to the cylinder 19, allowing the seat plate 1 to be height-adjustable to accommodate different users' heights and usage habits. The left side of the seat plate 1 is fixedly connected to the backrest 15, and a fixing block 16 is fixedly connected to the top left side of the backrest 15, providing stable support for the backrest 15. Inside the fixing block 16 of the backrest 15, a sliding rod 17 can be slidably connected, allowing the position of the headrest 18 to be adjusted according to individual comfort. The top right side of the sliding rod 17 is fixedly connected to the headrest 18, which is designed to provide neck support to reduce fatigue that may occur during prolonged use. The entire structural design takes into account ergonomic principles, aiming to provide users with a comfortable and practical seat.

[0037] Please see the appendix Figure 3 - Appendix Figure 5The bottom of the cylinder 19 is fixedly connected to the base 20 to ensure the stability of the cylinder 19. The top of the outer wall of the cylinder 19 is fixedly connected to the fixing ring 23. The function of the fixing ring 23 is to enhance the stability of the cylinder 19. The bottom of the base 20 is fixedly connected to the universal wheels 21, which allows the entire device to move flexibly in different directions, improving the mobility and ease of operation of the device. The outer wall of the universal wheels 21 is fixedly connected to the sound-absorbing pad 22, which allows the equipment to maintain a low noise level during operation. Multiple limiting holes 24 are opened on the opposite side of the support plate 8. These limiting holes 24 are set to accurately position the support plate 8 during installation and use. Multiple locking holes 25 are opened on the left and right sides of the support shell 3. These locking holes 25 can easily lock the support shell 3, thereby achieving a stable assembly.

[0038] Specifically, the bottom of cylinder 19 is designed to be fixedly connected to base 20 to ensure the stability of cylinder 19. A fixing ring 23 is fixedly connected to the top of the outer wall of cylinder 19. The function of fixing ring 23 is to enhance the stability of cylinder 19. The bottom of base 20 is designed to be fixedly connected to casters 21 on all four sides, so that the whole device can move flexibly in different directions, improving the mobility and ease of operation of the device. In order to reduce the noise generated during movement, a sound-absorbing pad 22 is fixedly connected to the outer wall of casters 21, which enables the equipment to maintain a low noise level during operation. Multiple limiting holes 24 are opened on the opposite side of support plate 8. These limiting holes 24 are set to accurately position support plate 8 during installation and use. Multiple locking holes 25 are opened on the left and right sides of support shell 3. These locking holes 25 can easily lock support shell 3, thereby achieving stable assembly.

[0039] Working principle: When in use, press the pressing block 5 to move on the outer wall of the limiting rod 6 and squeeze the spring 7, and stretch the moving block 4 on the outer wall of the support shell 3 upward to the predetermined height. Under the elastic force of the spring 7, the pressing block 5 is locked inside the locking hole 25, fixing the moving block 4. At the same time, press the pressing block 10 to drive the locking rod 11 to move and squeeze the spring 13. Simultaneously, adjust the square armrest 9 to move on the outer wall of the support plate 8 and fix the square armrest 9 under the elastic force of the spring 13, thereby realizing the adjustment of the height and length of the square armrest 9 of the seat and improving the practicality of the equipment.

[0040] To support the user's feet, the movable rod 204 is pulled out from inside the fixed housing 201 and rotated on the outer wall of the first pivot 203 until it is perpendicular to the ground. At the same time, the placement plate 206 is rotated on the outer wall of the second pivot 205 until it is horizontal to the ground. After use, the placement plate 206 is rotated to be close to the stop bar 208, and the movable rod 204 is rotated to be horizontal to the ground and inserted into the fixed housing 201, thereby realizing quick assembly and disassembly of the support mechanism 2 and improving assembly and disassembly efficiency.

[0041] 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 adjustable armrest structure for an ergonomic chair, comprising a seat plate (1), characterized in that: The top and front sides of the seat plate (1) are fixedly connected to a support shell (3). The outer wall of the support shell (3) is slidably connected to a moving block (4). The left and right sides of the support shell (3) are slidably connected to multiple pressing blocks (5). The pressing blocks (5) are slidably connected to adjacent pressing blocks (5) by limit rods (6). The outer wall of the limit rods (6) is fixedly connected to a spring (7). The top of the moving block (4) is fixedly connected to a support plate (8). The outer wall of the support plate (8) is slidably connected to... A square armrest (9) is attached. A pressing block (10) is fixedly connected to the middle of the front side of the square armrest (9). A locking rod (11) is fixedly connected to the rear side of the pressing block (10). A limiting rod (12) is slidably connected to the upper and lower sides of the rear of the locking rod (11). A spring (13) is fixedly connected to the outer wall of the limiting rod (12). A support mechanism (2) is provided on the right side of the bottom plate of the seat plate (1). The support mechanism (2) is used to support the user's feet.

2. The adjustable armrest structure of an ergonomic chair according to claim 1, characterized in that: The support mechanism (2) includes a fixed shell (201), and sliding grooves (202) are provided on the front and rear sides of the fixed shell (201). A rotating shaft (203) is slidably connected inside the sliding groove (202). A moving rod (204) is rotatably connected to the outer wall of the rotating shaft (203). A rotating shaft (205) is rotatably connected to the bottom of the moving rod (204). A placement plate (206) is rotatably connected to the middle of the outer wall of the rotating shaft (205). Two anti-slip blocks (207) are fixedly connected to the bottom of the placement plate (206). A stop bar (208) is fixedly connected to the bottom right side of the rotating shaft (205).

3. The adjustable armrest structure of an ergonomic chair according to claim 1, characterized in that: A seat cushion (14) is fixedly connected to the top of the seat plate (1), and a cylinder (19) is fixedly connected to the middle of the bottom side of the seat plate (1).

4. The adjustable armrest structure of an ergonomic chair according to claim 3, characterized in that: A back plate (15) is fixedly connected to the left side of the seat plate (1), and a fixing block (16) is fixedly connected to the top left side of the back plate (15).

5. The adjustable armrest structure of an ergonomic chair according to claim 4, characterized in that: The fixed block (16) is internally slidably connected to a sliding rod (17), and a headrest (18) is fixedly connected to the top right side of the sliding rod (17).

6. The adjustable armrest structure of an ergonomic chair according to claim 3, characterized in that: The bottom of the cylinder (19) is fixedly connected to a base (20), and the top of the outer wall of the cylinder (19) is fixedly connected to a retaining ring (23).

7. The adjustable armrest structure of an ergonomic chair according to claim 6, characterized in that: The base (20) is fixedly connected to casters (21) around its bottom, and a sound-absorbing pad (22) is fixedly connected to the outer wall of the casters (21).

8. The adjustable armrest structure of an ergonomic chair according to claim 1, characterized in that: Multiple limiting holes (24) are provided on the opposite side of the support plate (8), and multiple locking holes (25) are provided on the left and right sides of the support shell (3).

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