Office chair with adjustable armrests
By using a locking lever and trigger linkage mechanism, along with a slanted groove and a pin, the armrests of the office chair can be easily adjusted, solving the problem that traditional office chairs cannot adapt to different user body shapes and sitting habits, thus improving ease of use and comfort.
Patent Information
- Application Number
- CN202520580171.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The fixed armrests of traditional office chairs cannot adapt to the different body shapes and sitting habits of different users, resulting in fatigue in the upper limbs and neck and shoulders during long hours of office work. Existing adjustable armrests are inconvenient to operate and cannot be easily adjusted.
The design employs a locking lever and trigger linkage structure. By operating the trigger, the locking lever can be moved to achieve convenient adjustment of the handrail height. The locking block can be engaged or disengaged through the cooperation of the inclined groove and the pin. Combined with the design of the detachable connection structure and the locking block, the handrail can be adjusted in multiple dimensions.
The height and position of the armrests have been improved for easy adjustment, adapting to different user body types and sitting habits, thus enhancing ease of use and comfort.
Smart Images
Figure CN223787381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of office chair technology, specifically to an office chair with adjustable armrests. Background Technology
[0002] As office environments become increasingly modernized and people's demands for work comfort continue to rise, office chair designs are becoming more multifunctional.
[0003] Traditional office chairs typically come with fixed armrests. However, during long hours of work, the fixed height and position of the armrests are difficult to adapt to different user body types, sitting habits, and diverse activity needs, leading to fatigue in the upper limbs and neck. Currently, some office chairs on the market offer adjustable armrests, using screws or similar methods to adjust the armrest height. However, this adjustment method is inconvenient and does not meet users' needs for convenient armrest position adjustments. Utility Model Content
[0004] The purpose of this invention is to provide an office chair with adjustable armrests, thereby solving the above-mentioned problems.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an office chair with adjustable armrests, including a seat, with support members on both the left and right sides of the seat, and an armrest assembly slidably connected to the support members. The armrest assembly includes an armrest frame and a locking rod disposed within the armrest frame and capable of moving up and down relative to it. A locking block is connected to the locking rod. The support members are provided with a plurality of locking slots distributed in the up and down direction and capable of allowing the locking block to engage. A trigger is rotatably connected to the armrest frame. The free end of the trigger is connected to the locking rod so that the locking rod can move when the trigger is rotated. A linkage structure is provided between the locking rod and the locking block, which can push the locking block into or out of the locking slot when the locking rod moves. An elastic member is connected to the locking rod to drive the locking rod to reset.
[0006] As a further optimization of this utility model, the locking block is sleeved on the locking rod, the linkage structure includes an inclined groove disposed on the locking rod, the locking block is connected to a pin, and the pin is inserted into the inclined groove.
[0007] As a further optimization of this utility model, the inclined groove is spiral-shaped.
[0008] As a further optimization of this utility model, the support member includes a hollow support frame and a positioning sleeve sleeved inside the support frame and fixedly connected to the support frame. The locking groove is provided on the positioning sleeve, and the handrail frame is sleeved inside the positioning sleeve.
[0009] As a further optimization of this utility model, a detachable connection structure is provided between the positioning sleeve and the support frame. The lower part of the support frame has an opening for the detachable connection structure to be exposed. After the handrail assembly slides downward relative to the support member, the handrail frame covers the detachable connection structure.
[0010] As a further optimization of this utility model, the handrail assembly also includes a handrail base, a first locking block is connected to the handrail frame, the first locking block is connected to a second locking block that can slide relative to it to the left and right, and the handrail base is slidably connected to the second locking block in the front-back direction.
[0011] As a further optimization of this utility model, the front and rear side walls of the first locking block are provided with first elastic buckles, and the second locking block is provided with a plurality of first slots arranged side by side in the left and right direction for the first elastic buckles to extend into.
[0012] As a further optimization of this utility model, the left and right side walls of the second locking block are provided with second elastic buckles, and the armrest seat is provided with a plurality of second slots arranged side by side in the front-back direction for the second elastic buckles to extend into.
[0013] As a further optimization of this utility model, the first locking block is rotatably connected to the handrail frame, the lower part of the first locking block is provided with a locking protrusion, and the upper part of the handrail frame is provided with a plurality of third locking grooves that can cooperate with the locking protrusion along the rotation direction of the first locking block and the handrail frame.
[0014] As a further optimization of this utility model, a limiting block is provided at the lower part of the first locking block, and a limiting groove that can cooperate with the limiting block is provided at the upper part of the handrail along the rotation direction of the first locking block and the handrail.
[0015] Compared with the prior art, the present invention has the following advantages: by setting up a trigger that can drive the locking lever to move, and a linkage structure that can push the locking block into or out of the locking groove when the locking lever moves, the user can adjust the height of the armrest simply by operating the trigger, so as to adapt to the body shape and sitting habits of different users and improve the convenience of use. Attached Figure Description
[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:
[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;
[0018] Figure 2 This is a three-dimensional schematic diagram of the cooperation between the handrail assembly and the support component in this utility model;
[0019] Figure 3 This is an exploded view of the handrail assembly and support components in this utility model;
[0020] Figure 4 This is a cross-sectional view showing the cooperation between the handrail assembly and the support member in this utility model. Figure 1 ;
[0021] Figure 5 This is a cross-sectional view showing the cooperation between the handrail assembly and the support member in this utility model. Figure 2 ;
[0022] Figure 6 This is a three-dimensional schematic diagram of the locking rod and locking block cooperating in this utility model;
[0023] Figure 7 This is a three-dimensional schematic diagram of the armrest assembly and the positioning sleeve in this utility model;
[0024] Figure 8 This is a schematic diagram of the structure of the first locking block, the second locking block, and the armrest seat in this utility model.
[0025] Figure 9 This is an exploded view of the first locking block and the handrail frame in this utility model. Detailed Implementation
[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0027] like Figures 1 to 9 As shown, this utility model discloses an office chair with adjustable armrests, including a seat 1. Support members 2 are provided on both the left and right sides of the seat 1. Armrest assemblies 3 are slidably connected to the support members 2. The armrest assembly 3 includes an armrest frame 31 and a locking rod 32 disposed within the armrest frame 31 and capable of moving vertically relative to it. A locking block 33 is connected to the locking rod 32. The support member 2 has several locking slots 21 distributed vertically and capable of engaging the locking blocks 33. A trigger 4 is rotatably connected to the armrest frame 31. The free end of the trigger 4 is connected to the locking rod 32, allowing the trigger 4 to rotate and move the locking rod 32. A linkage structure 5 is provided between the locking rod 32 and the locking block 33, enabling the locking block 33 to engage or disengage from the locking slots 21 when the locking rod 32 moves. An elastic member 6 is connected to the locking rod 32 to reset it.
[0028] The seat 1 supports the user's body weight. Support members 2 are located on both sides of the seat 1 and are slidably connected to the armrest assembly 3. The support members 2 have multiple locking slots 21, thus fixing the armrest assembly 3 at different heights. A locking lever 32 is installed inside the armrest frame 31 and can move up and down within the armrest frame 31. One end of the locking lever 32 is connected to a trigger 4, which is also connected to a locking block 33. When the locking block 33 engages with the locking slot 21, the position of the armrest assembly 3 is fixed; when the locking block 33 disengages from the locking slot 21, the armrest assembly 3 can slide up and down relative to the support member 2 to adjust its height. The trigger 4 is rotatably connected to the armrest frame 31. When the user presses or pulls the trigger 4, the trigger 4 moves the locking lever 32, and through the linkage structure 5, causes the locking block 33 to disengage from the current locking slot 21. The elastic element 6 is connected to the locking rod 32, which can push the locking rod 32 back to its original position, so that the locking block 33 automatically engages in the nearest locking groove 21, ensuring the stability of the handrail position.
[0029] In this embodiment, when the user needs to adjust the armrest height, they operate the trigger 4, which moves the locking lever 32 and, through the linkage structure 5, causes the locking block 33 to disengage from the current locking slot 21. At this time, the armrest assembly 3 can slide freely up and down. After the user pulls the armrest assembly 3 upward to find a suitable height, they release the trigger 4. Under the action of the elastic element 6, the locking block 33 automatically engages with the nearest locking slot 21, thereby completing the adjustment of the armrest height.
[0030] By using a trigger 4 that can move the locking lever 32, and a linkage structure 5 that can push the locking block 33 into or out of the locking groove 21 when the locking lever 32 moves, the user can adjust the height of the armrest simply by operating the trigger 4 to adapt to different user body shapes and sitting habits, thus improving the ease of use.
[0031] The locking block 33 is sleeved on the locking rod 32. The linkage structure 5 includes an inclined groove 321 that is inclinedly arranged on the locking rod 32. The locking block 33 is connected to a pin 331, which is inserted into the inclined groove 321.
[0032] When the locking lever 32 moves due to the operation of the trigger, the inclined surface of the groove 321 forces the pin 331 to move the locking block 33. Through the cooperation between the groove 321 and the pin 331, the locking block 33 connected to the pin 331 can disengage from or re-engage in the locking groove 21. The combination of the groove 321 and the pin 331 enables the locking block 33 to engage or disengage, making the adjustment of the handrail height convenient and reliable.
[0033] The inclined groove 321 is spiral-shaped.
[0034] By using a spiral groove 321, the pin 331 moves along the spiral path of the groove 321 while driving the locking block 33 to rotate, thereby enabling the locking part of the locking block 33 to rotate into or out of the locking groove 21 to achieve locking and unlocking, increasing the accuracy of the locking and unlocking process and reducing jamming during the adjustment process.
[0035] In this embodiment, the axis of the locking rod 32 is the central axis of rotation, and the circumferential central angle between the starting end and the ending end of the spiral groove 321 is 90 degrees, so that the pin 331 can drive the locking block 33 to rotate 90 degrees during the process of moving from the starting end to the ending end, thereby realizing that the locking part of the locking block 33 can rotate into or out of the locking groove 21.
[0036] The linkage structure 5 can also be implemented in other ways, such as by providing a push block on the locking rod 32, and the locking block 33 having a push slope that matches the push block. When the locking rod 32 moves up and down, the push block presses against the push slope, thereby causing the locking block 33 to disengage from the locking groove 21. Compared to the adjustment method of the push block and the push slope working together, the spiral groove 321 allows the locking block 33 to move in and out of the locking groove 21 more accurately and smoothly.
[0037] The support member 2 includes a hollow support frame 22 and a positioning sleeve 23 that is sleeved inside the support frame 22 and fixedly connected to the support frame 22. The locking groove 21 is provided on the positioning sleeve 23, and the handrail frame 31 is sleeved inside the positioning sleeve 23.
[0038] Setting the locking groove 21 on the positioning sleeve 23 can improve manufacturing accuracy. Placing the positioning sleeve 23 inside the support frame 22 can reduce the influence of the external environment on the fit between the locking block 33 and the locking groove 21.
[0039] A detachable connection structure 7 is provided between the positioning sleeve 23 and the support frame 22. The lower part of the support frame 22 has an opening 221 for the detachable connection structure 7 to be exposed. After the handrail assembly 3 slides downward relative to the support member 2, the handrail frame 31 covers the detachable connection structure 7.
[0040] The detachable connection structure 7 improves the maintenance efficiency of the positioning sleeve 23. The opening 221 allows the detachable connection structure 7 to be accessed from the outside, enabling adjustments or repairs without completely disassembling the chair. When the armrest assembly 3 slides down along the support 2 to its lowest position, the armrest frame 31 covers the detachable connection structure 7, ensuring overall aesthetic appeal and reducing the impact of the external environment on the detachable connection structure 7.
[0041] In this embodiment, the detachable connection structure 7 includes bolts that lock the positioning sleeve 23 to the support frame 22. The detachable connection structure 7 can also be implemented by means of snap-fit connection, plug-in connection, magnetic connection, etc.
[0042] The handrail assembly 3 also includes a handrail base 34. A first locking block 81 is connected to the handrail frame 31. A second locking block 82 that can slide relative to the first locking block 81 is connected to the first locking block 81. The handrail base 34 is slidably connected to the second locking block 82 in the front-back direction.
[0043] By setting the first locking block 81 and the second locking block 82, the armrest seat 34 can slide relative to the armrest frame 31 in the front-back direction and the left-right direction, thereby realizing the left-right sliding adjustment and the front-back sliding adjustment of the two.
[0044] The first locking block 81 has a first elastic buckle 811 on its front and rear side walls, and the second locking block 82 has a plurality of first slots 821 arranged side by side in the left and right direction for the first elastic buckle 811 to extend into.
[0045] In this embodiment, the second locking block 82 has a receiving groove 821 into which the first locking block 81 extends. The first slot 821 is located on the front and rear walls of the receiving groove 821. In use, the user pushes or pulls the armrest seat 34 in the left-right direction, causing the second locking block 82 to slide relative to the first locking block 81 in the left-right direction. During the sliding process, the first elastic buckle 811 will disengage from the current first slot 821 due to elastic deformation and gradually approach the next target first slot 821 as the second locking block 82 moves. When the second locking block 82 slides to a predetermined position, the first elastic buckle 811 engages in the corresponding first slot 821, completing the position locking. The design of multiple first slots 821 provides a variety of selectable adjustment levels to meet the needs of different users.
[0046] The left and right side walls of the second locking block 82 are provided with second elastic buckles 822, and the armrest seat 34 is provided with a plurality of second slots 341 arranged side by side in the front and back direction for the second elastic buckles 822 to extend into.
[0047] In use, the user pushes or pulls the armrest seat 34 in a forward-backward direction, causing it to slide relative to the second locking block 82. During the sliding process, the second elastic buckle 822 will disengage from the current second locking slot 341 due to elastic deformation, and gradually approach the next target second locking slot 341 as the armrest seat 34 moves. When the armrest seat 34 slides to the predetermined position, the second elastic buckle 822 engages in the corresponding second locking slot 341, completing the position locking. The design of multiple second locking slots 341 provides a variety of selectable adjustment levels to meet the needs of different users.
[0048] The first locking block 81 is rotatably connected to the handrail frame 31. The lower part of the first locking block 81 is provided with a locking protrusion 812. The upper part of the handrail frame 31 is provided with a plurality of third locking slots 311 that can cooperate with the locking protrusion 812 along the rotation direction of the first locking block 81 and the handrail frame 31.
[0049] In use, the user rotates the armrest seat 34, allowing it to rotate within a certain angle range relative to the armrest frame 31. During rotation, the locking protrusion 812 disengages from the current third slot 311 and gradually approaches the next target third slot 311 as the first locking block 81 rotates. When the first locking block 81 rotates to a predetermined angle, the locking protrusion 812 engages with the corresponding third slot 311, completing the angle locking. The first locking block 81 and the armrest frame 31 are rotatably connected, allowing the armrest seat 34 to rotate within a certain angle range relative to the armrest frame 31. The multiple third slots 311 provide various selectable rotation angle settings, further enhancing the flexibility of the armrest.
[0050] The first locking block 81 has a limiting block 813 at its lower part, and the upper part of the handrail frame 31 has a limiting groove 312 that can cooperate with the limiting block 813 along the rotation direction of the first locking block 81 and the handrail frame 31.
[0051] The limiting block 813 can cooperate with the limiting groove 312 on the handrail frame 31 to limit the maximum rotation angle range of the first locking block 81 relative to the handrail frame 31, and prevent the handrail seat 34 from rotating excessively and causing user discomfort.
Claims
1. An office chair with adjustable armrests, characterized in that, The chair includes a seat (1), and supports (2) are provided on both the left and right sides of the seat (1). The supports (2) are slidably connected to armrest assemblies (3). The armrest assembly (3) includes an armrest frame (31) and a locking rod (32) disposed in the armrest frame (31) and capable of moving up and down relative to it. A locking block (33) is connected to the locking rod (32). The supports (2) are provided with a plurality of locking grooves (21) distributed in the up and down direction and capable of being engaged by the locking blocks (33). The handrail (31) is rotatably connected to a trigger (4). The free end of the trigger (4) is connected to a locking rod (32) so that the locking rod (32) can move when the trigger (4) rotates. A linkage structure (5) is provided between the locking rod (32) and the locking block (33) so that the locking block (33) can be pushed into or out of the locking groove (21) when the locking rod (32) moves. The locking rod (32) is connected to an elastic element (6) that drives the locking rod (32) to reset.
2. The office chair with adjustable armrests according to claim 1, characterized in that, The locking block (33) is sleeved on the locking rod (32), and the linkage structure (5) includes an inclined groove (321) on the locking rod (32). The locking block (33) is connected to a pin (331), and the pin (331) is inserted into the inclined groove (321).
3. An office chair with adjustable armrests according to claim 2, characterized in that, The inclined groove (321) is spiral-shaped.
4. An office chair with adjustable armrests according to claim 1, characterized in that, The support member (2) includes a hollow support frame (22) and a positioning sleeve (23) fitted inside the support frame (22) and fixedly connected to the support frame (22). The locking groove (21) is provided on the positioning sleeve (23), and the handrail frame (31) is fitted inside the positioning sleeve (23).
5. An office chair with adjustable armrests according to claim 4, characterized in that, A detachable connection structure (7) is provided between the positioning sleeve (23) and the support frame (22). The lower part of the support frame (22) has an opening (221) for the detachable connection structure (7) to be exposed. After the handrail assembly (3) slides downward relative to the support member (2), the handrail frame (31) covers the detachable connection structure (7).
6. An office chair with adjustable armrests according to claim 1, characterized in that, The handrail assembly (3) also includes a handrail seat (34), a first locking block (81) is connected to the handrail frame (31), the first locking block (81) is connected to a second locking block (82) that can slide relative to it to the left and right, and the handrail seat (34) is slidably connected to the second locking block (82) in the front-back direction.
7. An office chair with adjustable armrests according to claim 6, characterized in that, The first locking block (81) has a first elastic buckle (811) on its front and rear side walls, and the second locking block (82) has a plurality of first slots (821) arranged side by side in the left and right direction for the first elastic buckle (811) to extend into.
8. An office chair with adjustable armrests according to claim 6, characterized in that, The left and right side walls of the second locking block (82) are provided with second elastic buckles (822), and the armrest seat (34) is provided with a plurality of second slots (341) arranged side by side in the front and back direction for the second elastic buckles (822) to extend into.
9. An office chair with adjustable armrests according to claim 6, characterized in that, The first locking block (81) is rotatably connected to the handrail frame (31). The lower part of the first locking block (81) is provided with a locking protrusion (812). The upper part of the handrail frame (31) is provided with a plurality of third slots (311) that can cooperate with the locking protrusion (812) along the rotation direction of the first locking block (81) and the handrail frame (31).
10. An office chair with adjustable armrests according to claim 9, characterized in that, The first locking block (81) has a limiting block (813) at its lower part, and the upper part of the handrail (31) has a limiting groove (312) that can cooperate with the limiting block (813) along the rotation direction of the first locking block (81) and the handrail (31).