A multi-directional adjustment device for a chair armrest

Abstract

The utility model relates to handrail adjusting technical field, and disclose a kind of chair handrail multidirectional adjusting device, comprising: base, the outer wall of base is connected with lifting outer cover, the outer wall of base is connected with elastic spring, the top of base is equipped with lifting inner cylinder, the outer wall of lifting inner cylinder is equipped with the clamping hole, the inner wall of lifting inner cylinder is equipped with movable slot, the inner wall of clamping hole is sleeved with clamping pin, the top of lifting inner cylinder is connected with side extension wall, the inner wall of side extension wall is equipped with hexagonal groove, the inner wall of hexagonal groove is sleeved with hexagon nut, the inner wall of side extension wall is equipped with connecting wall, this chair handrail multidirectional adjusting device, by setting hand rest plate, round connector and push piece, stopper, lifter and other structures, to make the reset spring on device automatically push stopper close to the outer wall of lifter, and then make the stopper on device restore and the outer wall of lifter engagement state.

Description

Technical Field

[0001] This utility model relates to the field of armrest adjustment technology, specifically a multi-directional adjustment device for chair armrests. Background Technology

[0002] Existing multi-directional adjustable chair armrests typically consist of multiple components working together to achieve flexible adjustment in multiple directions, including height, forward / backward, left / right, and angle. To improve user comfort and work efficiency, it is necessary to provide users with better adjustment options, allowing them to adjust the height, left / right, and tilt angles of the chair armrests according to their own physical conditions and comfort. More manual adjustment functions would give users greater control over the armrest adjustment. Therefore, a multi-directional adjustable chair armrest device that addresses these issues is needed. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a multi-directional adjustment device for chair armrests, which solves the problems mentioned in the background.

[0004] This utility model provides the following technical solution: a multi-directional adjustment device for chair armrests, comprising: a base, an outer lifting sleeve connected to the outer wall of the base, a spring connected to the outer wall of the base, a lifting inner cylinder provided at the top of the base, a snap-fit ​​hole provided on the outer wall of the lifting inner cylinder, a movable groove provided on the inner wall of the lifting inner cylinder, a locking pin sleeved on the inner wall of the snap-fit ​​hole, a side extension wall connected to the top of the lifting inner cylinder, a hexagonal groove provided on the inner wall of the side extension wall, a hexagonal nut sleeved on the inner wall of the hexagonal groove, and the side extension wall... The inner wall of the extension wall is provided with a connecting wall, and a manual screw is sleeved on the inner wall of the connecting wall. A lifter is connected to the top of the connecting wall. A circular docking groove is opened on the top of the lifter. An annular groove is opened on the top of the lifter. A ball bearing is placed on the inner wall of the annular groove. A hand support plate is provided on the top of the lifter. A circular docking device is connected to the bottom of the hand support plate. A sliding groove is opened on the bottom of the hand support plate. A retainer is fixedly connected to the bottom of the hand support plate. A lever is provided at the bottom of the hand support plate. A limiter is connected to the outer wall of the lever.

[0005] By adopting the above technical solution, a manual screw, a side extension wall, a snap-fit ​​hole, a snap-fit ​​pin, a limiter, and a lifter are set up. The height of the inner cylinder can be adjusted by changing the position of the snap-fit ​​pin within the snap-fit ​​hole. The tension of the side extension wall relative to the connecting wall can be adjusted to a certain extent by tightening or loosening the manual screw. The limiter limits the lifter on one side, allowing the hand support plate on the device to be repositioned after rotating a certain angle.

[0006] Preferably, the inner wall of the lifting outer sleeve is adapted to the size of the outer wall of the lifting inner cylinder, and the snap-fit ​​holes are simultaneously opened on the inner and outer walls of the lifting outer sleeve and the lifting inner cylinder.

[0007] By adopting the above technical solution, the number of snap-fit ​​holes opened on the lifting outer sleeve and the lifting inner cylinder are different, so that the inner cylinder can be reconnected in diameter after the height is raised or lowered.

[0008] Preferably, the movable groove is disposed on one side of the plurality of snap-fit ​​holes, and the outer wall of the snap-fit ​​pin is adapted to the diameter of the snap-fit ​​hole and the inner wall of the movable groove.

[0009] By adopting the above technical solution, all the snap-fit ​​holes are connected together through the movable groove on one side of the snap-fit ​​hole, so that the snap-fit ​​pin can move in the movable groove and realize the position switching of the same snap-fit ​​pin.

[0010] Preferably, the inner wall of the hexagonal groove has the same shape and size as the outer wall of the hexagonal nut, and the inner wall of the hexagonal nut is threadedly connected to the outer wall of the manual screw.

[0011] By adopting the above technical solution, the hexagonal nut is placed in the hexagonal groove first, and under the torsion of the manual screw, the hexagonal nut is limited by the hexagonal groove, so that the manual screw is continuously threaded.

[0012] Preferably, the inner wall of the circular docking groove is adapted to the shape and size of the outer wall of the circular docking device, and the hand support plate rotates around the circular docking device as the center point.

[0013] By adopting the above technical solution, a circular docking groove is set to accommodate the circular docking device, and when the hand support plate needs to be rotated, the circular docking device can rotate slightly within the circular docking groove.

[0014] Preferably, the top of the paddle is provided with a protrusion, and the protrusion slides within the inner cavity of the groove.

[0015] By adopting the above technical solution, the protrusion is set in the inner cavity of the slide groove, and whenever the paddle is manually operated, its protrusion always moves in the slide groove.

[0016] Preferably, the outer wall of the limiter is provided with meshing teeth, and the outer wall of the lifter is provided with external teeth.

[0017] By adopting the above technical solution and setting meshing teeth and external teeth, the mutual limiting effect of meshing teeth and external teeth is required after each rotation and adjustment of the hand support plate.

[0018] Preferably, the outer wall of the limiter is connected to a return spring, and the other end of the two return springs is connected to the outer wall of the fixer.

[0019] By adopting the above technical solution and setting a reset spring, after each manual operation of the lever affects the limit switch, the limit switch is reset by releasing the lever and using the reset spring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The multi-directional adjustment device for the chair armrests, through the setting of elastic springs, lifting inner cylinders, locking holes, movable grooves, locking pins and other structures, allows the elastic springs on the device to automatically lift the height of the lifting inner cylinder when the locking pins move from the inner cavity of the locking hole to the inner cavity of the movable groove. After the height of the lifting inner cylinder is raised, the locking pins slide again to the inner cavity of the locking hole at a different height, so that the lifting inner cylinder is raised in the inner cavity of the lifting outer sleeve and then locked and fixed again.

[0022] 2. The chair armrest multi-directional adjustment device, through the setting of hand support plate, circular connector, lever, limiter, and lifter, etc., when the hand support plate needs to be rotated in a planar angle, first manually move the lever to pull the limiter away from the outer wall of the lifter, and then use the hand support plate to rotate in the inner cavity of the circular connector groove with the circular connector as the center point. Then, release the operation of the lever, so that the return spring on the device automatically pushes the limiter closer to the outer wall of the lifter, thereby restoring the limiter on the device to the engagement state with the outer wall of the lifter. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the lifting inner cylinder of this utility model;

[0025] Figure 3 This is a schematic diagram of the snap-fit ​​hole structure of this utility model;

[0026] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0027] Figure 5 This is a schematic diagram of the circular docking groove structure of this utility model.

[0028] In the diagram: 1. Base; 2. Lifting outer sleeve; 3. Elastic spring; 4. Lifting inner cylinder; 5. Snap-fit ​​hole; 6. Movable groove; 7. Snap pin; 8. Side extension wall; 9. Hexagonal groove; 10. Hexagonal nut; 11. Connecting wall; 12. Manual screw; 13. Lifter; 14. Circular docking groove; 15. Annular groove; 16. Ball bearing; 17. Hand support plate; 18. Circular docking device; 19. Slide groove; 20. Fixer; 21. Paddle; 22. Limiter; 23. Return spring. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-5 A multi-directional adjustment device for chair armrests includes: a base 1, a lifting sleeve 2 connected to the outer wall of the base 1, a spring spring 3 connected to the outer wall of the base 1, a lifting inner cylinder 4 provided at the top of the base 1, a snap-fit ​​hole 5 on the outer wall of the lifting inner cylinder 4, a movable groove 6 on the inner wall of the lifting inner cylinder 4, a locking pin 7 sleeved on the inner wall of the snap-fit ​​hole 5, a side extension wall 8 connected to the top of the lifting inner cylinder 4, a hexagonal groove 9 on the inner wall of the side extension wall 8, a hexagonal nut 10 sleeved on the inner wall of the hexagonal groove 9, and a connecting wall 11 on the inner wall of the side extension wall 8. A manual screw 12 is fitted onto the inner wall of the connecting wall 11. A lifter 13 is connected to the top of the connecting wall 11. A circular docking groove 14 is opened on the top of the lifter 13. An annular groove 15 is opened on the top of the lifter 13. A ball bearing 16 is placed on the inner wall of the annular groove 15. A hand support plate 17 is provided on the top of the lifter 13. A circular docking device 18 is connected to the bottom of the hand support plate 17. A sliding groove 19 is opened on the bottom of the hand support plate 17. A retainer 20 is fixedly connected to the bottom of the hand support plate 17. A lever 21 is provided at the bottom of the hand support plate 17. A limiter 22 is connected to the outer wall of the lever 21.

[0031] The inner wall of the lifting outer sleeve 2 is sized to match the outer wall of the lifting inner cylinder 4, and the snap-fit ​​holes 5 are simultaneously opened on the inner and outer walls of both the lifting outer sleeve 2 and the lifting inner cylinder 4. The lifting outer sleeve 2 is fitted onto the lifting inner cylinder 4, so that the snap-fit ​​holes 5 on the device are opened with the same diameter on the inner and outer walls of both the lifting outer sleeve 2 and the lifting inner cylinder 4, and multiple snap-fit ​​holes 5 are arranged at different heights on the inner wall of the lifting inner cylinder 4.

[0032] The movable groove 6 is located on one side of multiple snap-fit ​​holes 5, and the outer wall of the snap-fit ​​pin 7 is adapted to the diameter of the snap-fit ​​hole 5 and the inner wall of the movable groove 6. When the snap-fit ​​pin 7 on the device is sleeved in the inner wall of the snap-fit ​​hole 5, it can slide into the inner cavity of the movable groove 6 when moved manually. This allows the snap-fit ​​pin 7 to be manually adjusted to enter the inner wall of the snap-fit ​​hole 5 at different heights, and then the snap-fit ​​pin 7 is used again to snap the lifting outer sleeve 2 and the lifting inner cylinder 4.

[0033] The inner wall of the hexagonal groove 9 is the same shape and size as the outer wall of the hexagonal nut 10, and the inner wall of the hexagonal nut 10 is threadedly connected to the outer wall of the manual screw 12. When the manual screw 12 rotates in the inner cavity of the hexagonal nut 10, the hexagonal nut 10 remains stationary when its outer wall is limited by the hexagonal groove 9. The rotation of the manual screw 12 causes it to press the outer wall of the side extension wall 8 tightly against the outer wall of the connecting wall 11. This allows the manual screw 12 to control the tightness between the side extension wall 8 and the connecting wall 11, thereby adjusting the positioning capability of the connecting wall 11 after rotation around the manual screw 12.

[0034] The inner wall of the circular docking groove 14 is adapted to the shape and size of the outer wall of the circular docking device 18, and the hand support plate 17 rotates around the circular docking device 18 as the center point. When the hand support plate 17 on the device rotates in a plane around the circular docking device 18 as the center point, the circular docking device 18 on the device rotates in the inner cavity of the circular docking groove 14, and will not disengage from the circular docking groove 14 during rotation, thereby keeping the hand support plate 17 on the device in a movable connection with the lifting device 13, thus realizing the plane rotation function.

[0035] The top of the paddle 21 is provided with a protrusion, which slides within the inner cavity of the groove 19. When the paddle 21 is manually moved outward, it slides along the groove 19 using its protrusion, thus preventing the paddle 21 from wobbling during movement. When the paddle 21 returns to its original position, the protrusion remains within the inner cavity of the groove 19.

[0036] The outer wall of the limiter 22 is provided with meshing teeth, and the outer wall of the lifter 13 is provided with external teeth. When the limiter 22 on the device approaches the outer wall of the lifter 13, the limiter 22 on the device uses its own meshing teeth to contact the external teeth on the outer wall of the lifter 13, and the limiter 22 and the lifter 13 can be engaged and fixed, so that when the hand support plate 17 on the device rotates left and right on the top of the lifter 13, the hand support plate 17 on the device can be engaged and fixed again after rotation.

[0037] The limiter 22 has a return spring 23 connected to its outer wall, and the other ends of the two return springs 23 are connected to the outer wall of the fixture 20. The return springs 23 are positioned between the fixture 20 and the limiter 22, so that when the lever 21 is manually pulled, the limiter 22 is pulled closer to the fixture 20, and when released, the return springs 23 automatically push the limiter 22 back to its original position. This allows the limiter 22 to be adjusted manually and automatically returns to its original position when released.

[0038] The working principle is as follows: First, by setting up a structure including a spring spring 3, a lifting inner cylinder 4, a locking hole 5, a movable groove 6, and a locking pin 7, when the locking pin 7 moves from the inner cavity of the locking hole 5 to the inner cavity of the movable groove 6, the spring spring 3 automatically pushes the lifting inner cylinder 4 upward. After the height of the lifting inner cylinder 4 is increased, the locking pin 7 slides again to the inner cavity of the locking hole 5 at a different height, so that the lifting inner cylinder 4 is raised again in the inner cavity of the lifting outer sleeve 2 and then locked in place. Then, by setting up a hand support plate 17, a circular connector 18, and... The structure of the lever 21, limiter 22, and lifter 13 allows the hand plate 17 on the device to rotate at a planar angle. First, manually move the lever 21 to pull the limiter 22 away from the outer wall of the lifter 13. Then, rotate the hand plate 17 on the device around the circular docking device 18 in the inner cavity of the circular docking groove 14. After that, release the operation of the lever 21, so that the return spring 23 on the device automatically pushes the limiter 22 closer to the outer wall of the lifter 13, thereby restoring the limiter 22 on the device to the engagement state with the outer wall of the lifter 13.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-directional adjustment device for chair armrests, characterized in that, include: A base (1) is provided, with a lifting sleeve (2) connected to the outer wall of the base (1), and a spring spring (3) connected to the outer wall of the base (1). A lifting inner cylinder (4) is provided at the top of the base (1). A snap-fit ​​hole (5) is provided on the outer wall of the lifting inner cylinder (4). A movable groove (6) is provided on the inner wall of the lifting inner cylinder (4). A snap-fit ​​pin (7) is fitted onto the inner wall of the snap-fit ​​hole (5). A side extension wall (8) is connected to the top of the lifting inner cylinder (4). A hexagonal groove (9) is provided on the inner wall of the side extension wall (8). A hexagonal nut (10) is fitted onto the inner wall of the hexagonal groove (9). A connecting wall (11) is provided on the inner wall of the side extension wall (8). A connecting wall (11) is fitted onto the inner wall of the connecting wall (11). There is a manual screw (12), and a lifter (13) is connected to the top of the connecting wall (11). The top of the lifter (13) has a circular docking groove (14) and an annular groove (15). A ball bearing (16) is placed on the inner wall of the annular groove (15). The top of the lifter (13) has a hand support plate (17). The bottom of the hand support plate (17) is connected to a circular docking device (18). The bottom of the hand support plate (17) has a sliding groove (19). A retainer (20) is fixedly connected to the bottom of the hand support plate (17). A lever (21) is provided at the bottom of the hand support plate (17). A limiter (22) is connected to the outer wall of the lever (21).

2. The multi-directional adjustment device for a chair armrest according to claim 1, characterized in that, The inner wall of the lifting outer sleeve (2) is adapted to the size of the outer wall of the lifting inner cylinder (4), and the snap-fit ​​hole (5) is opened on both the inner and outer walls of the lifting outer sleeve (2) and the lifting inner cylinder (4).

3. The multi-directional adjustment device for chair armrests according to claim 1, characterized in that, The movable groove (6) is provided on one side of the multiple snap-fit ​​holes (5), and the outer wall of the snap-fit ​​pin (7) is adapted to the diameter of the inner wall of the snap-fit ​​hole (5) and the movable groove (6).

4. A multi-directional adjustment device for chair armrests according to claim 1, characterized in that, The inner wall of the hexagonal groove (9) is the same shape and size as the outer wall of the hexagonal nut (10), and the inner wall of the hexagonal nut (10) is threadedly connected to the outer wall of the manual screw (12).

5. A multi-directional adjustment device for a chair armrest according to claim 1, characterized in that, The inner wall of the circular docking groove (14) is adapted to the shape and size of the outer wall of the circular docking device (18), and the hand support plate (17) rotates with the circular docking device (18) as the center point.

6. A multi-directional adjustment device for a chair armrest according to claim 1, characterized in that, The top of the paddle (21) is provided with a protrusion, and the protrusion slides in the inner cavity of the groove (19).

7. A multi-directional adjustment device for chair armrests according to claim 1, characterized in that, The outer wall of the limiter (22) is provided with meshing teeth, and the outer wall of the lifter (13) is provided with external teeth.

8. A multi-directional adjustment device for a chair armrest according to claim 1, characterized in that, The outer wall of the limiter (22) is connected to a return spring (23), and the other end of the two return springs (23) is connected to the outer wall of the fixer (20).

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