Armrest with 4d adjustment function

Abstract

The utility model discloses a handrail with a 4d adjusting function. The handrail comprises a handrail body (1), a stand column pipe (2) and a cylinder body (3). The adjusting button (12) is pushed inwards to enable the base (11) to move and push the adjusting rotary rod (8) to rotate in one direction in the circumferential direction at the same time, the adjusting rotary rod (8) is aligned to the through hole (9), and therefore the barrel body (3), the adjusting rotary rod (8) and the base (11) freely move up and down. The adjusting button (12) is pulled outwards to enable the base (11) to move and push the adjusting rotary rod (8) to rotate in the other direction in the circumferential direction at the same time, a groove (10) of the adjusting rotary rod (8) is embedded into a bottom plate of the stand column pipe cover plate (6), and therefore the cylinder body (3), the adjusting rotary rod (8) and the base (11) are positioned up and down. The armrest adopts a button form, and the groove on the outer side of the adjusting rotary rod is embedded into or separated from the bottom plate of the upright tube cover plate by rotating the adjusting rotary rod inside so as to realize up-and-down adjustment and positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of office equipment, in particular to an armrest with 4D adjustment. Background Art

[0002] A liftable alloy steel armrest for an office chair is currently disclosed. The armrest comprises a base tube, a lift tube that slides vertically within a cylindrical inner cavity of the base tube, an armrest plate fixed to the upper end of the lift tube, and a lift mechanism mounted within the cylindrical inner cavity of the base tube. The lift mechanism comprises a rocker mechanism and a lift drive mechanism. The rocker mechanism is rotatably mounted on a bearing hole of the base tube. The rocker mechanism is connected to and drives a movable mechanism on the lift drive mechanism, which in turn drives the lift tube up and down. In the present application, the lift tube and the lift drive mechanism are located within the base tube, making the liftable armrest compact. The lift drive mechanism drives the lift tube and the armrest plate up and down, thereby accommodating users of different heights. The lift drive mechanism comprises a screw that is rotatably mounted within the base tube via a fixed bearing plate, and a slider plate that engages with the screw thread and is fixed to the lift tube. Rotating the screw to drive the slider plate achieves a high reduction ratio and a large torque, making manual rocking of the rocker mechanism easier and allowing for finer adjustment. The top end of the screw rod is rotatably mounted with a movable bearing plate through a bearing, and the movable bearing plate is slidably mounted in the lifting tube. In the present application, a movable bearing plate is provided at the top end of the screw rod to fix the top end of the screw rod, so that the screw rod maintains linear stability, avoids excessive force on the slider plate, and prevents bending, which affects the lifting and lowering movement of the lifting tube. The above structure uses a rotating screw rod to drive the slider plate to rotate to achieve lifting, and then it can be adjusted, but the operation is inconvenient and brings inconvenience to the user; in addition, the use of screw rod thread matching requires regular maintenance, such as adding lubricating oil, etc., and the maintenance cost is high. In addition, the internal structure is complicated, which brings inconvenience to installation, and the rocker mechanism extending outward takes up space. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an armrest with 4D adjustment in the form of a button, which can realize up and down adjustment and positioning by rotating the internal adjustment rotary rod so that the groove on the outside of the adjustment rotary rod is embedded in or separated from the bottom plate of the column tube cover. The adjustment is convenient, the reliability is good, the space is not occupied, and the structure is simple.

[0004] The technical solution of the present utility model is to provide an armrest with 4D adjustment having the following structure, including an armrest body, a column tube and a cylinder body; the armrest body is arranged at the top of the cylinder body, the bottom of the cylinder body is sleeved outside the column tube and is telescopic up and down, and the bottom of the column tube is provided with a bent end connected to the seat; the top of the cylinder body is provided with a rotating connection block, and the top of the rotating connection block is provided with an upwardly protruding rectangular block; the top of the column tube is provided with a column tube cover plate, and the top of the column tube cover plate is provided with a rotary rod fixing seat, the rotary rod fixing seat is fixed to the cylinder body and is provided with an adjusting rotary rod inside, and the column tube cover A through hole is provided on the plate, and the outer side wall of the adjusting rotary rod is provided with at least several grooves arranged along the height direction. The top of the adjusting rotary rod is connected to the base, and the outer end of the base is connected to the adjusting button; the adjusting button is pushed inward to move the base and simultaneously push the adjusting rotary rod to rotate circumferentially in one direction, so that the adjusting rotary rod is aligned with the through hole, so that the cylinder body, the adjusting rotary rod and the base can move freely up and down; the adjusting button is pulled outward to move the base and simultaneously push the adjusting rotary rod to rotate circumferentially in another direction, so that the groove of the adjusting rotary rod is embedded in the bottom plate of the column tube cover, so that the cylinder body, the adjusting rotary rod and the base are positioned up and down.

[0005] The cylinder body moves up and down through the guide rail structure between the inner wall of the cylinder body and the outer wall of the column tube.

[0006] The base is slidably connected to the bottom of the rotating rod fixing seat, and two sides of the base and the bottom of the rotating rod fixing seat are provided with slide rail structures.

[0007] The through hole is a long waist-shaped hole, and the cross section of the body of the adjusting rotary rod matches the long waist hole.

[0008] The base is provided with a first positioning hole and a second positioning hole, and the top end of the adjusting rotary rod is provided with a first driving rod and a second driving rod, the first driving rod is movably embedded in the first positioning hole, and the second driving rod is movably embedded in the second positioning hole; when the adjusting rotary rod is freely movable up and down, the first driving rod is close to the position closest to the second driving rod, so that the adjusting rotary rod is aligned with the through hole;

[0009] When the adjusting rotary rod is positioned up and down, the first driving rod and the second driving rod are located on a diagonal line of the adjusting rotary rod and are farthest apart from each other, so that the groove of the adjusting rotary rod is embedded in the bottom plate of the column tube cover.

[0010] The base is provided with a spring pin and a spring. The spring is sleeved outside the spring pin, with one end abutting against the base and the other end abutting against the inner wall of the rotating rod fixing seat. After the adjusting button is pushed inward, it is reset by the spring.

[0011] An upper limit block is provided on the top of the adjusting rotary rod, and a lower limit block is provided on the bottom. The outer dimensions of the upper limit block and the lower limit block are both larger than the dimensions of the through hole.

[0012] After adopting the above structure, the utility model has the following advantages: the adjustment rod is matched with the column tube cover plate, and the adjustment button is pushed inward to move the base and simultaneously push the adjustment rod to rotate circumferentially in one direction, so that the adjustment rod is aligned with the through hole, so that the barrel, adjustment rod, and base can move freely up and down; the adjustment button is pulled outward to move the base and simultaneously push the adjustment rod to rotate circumferentially in another direction, so that the groove of the adjustment rod is embedded in the bottom plate of the column tube cover plate, so that the barrel, adjustment rod, and base are positioned up and down. This structure only needs to push the adjustment button inward during adjustment, and it can be freely moved up and down by the external force of the user. After adjustment, the adjustment button can be reset, which is convenient to operate and adjust, and has good reliability. In addition, the adjustment button is located on the inner side of the armrest, does not protrude, does not take up space, and has a simple structure.

[0013] As an improvement, the up and down movement of the cylinder body is through a guide rail structure between the inner wall of the cylinder body and the outer wall of the column tube, providing guidance for the adjustment of the armrest height and increasing the adjustment accuracy.

[0014] As an improvement, the base is slidably connected to the bottom of the rotating rod fixing seat, and slide rail structures are provided on both sides of the base and the bottom of the rotating rod fixing seat to increase the directionality of the base sliding.

[0015] As an improvement, the through hole is a long waist-shaped hole, and the cross section of the adjusting rotary rod body matches the long waist hole, so that the adjusting rotary rod can be rotated at an angle to prevent it from passing through the through hole, thereby enabling up and down positioning.

[0016] As an improvement, the base is provided with a first positioning hole and a second positioning hole, and the top end of the adjusting rotary rod is provided with a first driving rod and a second driving rod, the first driving rod is movably embedded in the first positioning hole, and the second driving rod is movably embedded in the second positioning hole; in the state in which the adjusting rotary rod is freely movable up and down, the first driving rod is close to the position closest to the second driving rod, so that the adjusting rotary rod is aligned with the through hole; in the state in which the adjusting rotary rod is positioned up and down, the first driving rod and the second driving rod are located on a diagonal line of the adjusting rotary rod, and the distance between the two is the farthest, so that the groove of the adjusting rotary rod is embedded in the bottom plate of the column tube cover plate. This structure can realize rapid switching between the positioning state and the adjustment state, and has good reliability.

[0017] As an improvement, the base is provided with a spring pin and a spring. The spring is sleeved outside the spring pin, with one end abutting against the base and the other end abutting against the inner wall of the rotating rod fixing seat. After the adjustment button is pushed inward, it is reset by the spring, which increases the reset efficiency and the positioning effect after adjustment.

[0018] As an improvement, an upper limit block is provided on the top of the adjusting rotary rod and a lower limit block is provided on the bottom. The outer dimensions of the upper limit block and the lower limit block are both larger than the dimensions of the through hole, which limit the positioning of the lowest position and the highest position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of an armrest with 4D adjustment according to the present invention.

[0020] Figure 2 This is an exploded view of an armrest with 4D adjustment according to the present invention.

[0021] Figure 3 This is a split schematic diagram of a rotary rod fixing seat of a handrail with 4D adjustment according to the present invention.

[0022] Figure 4 This is a schematic diagram of the interior of a rotary rod fixing seat of an armrest with 4D adjustment according to the present invention.

[0023] Figure 5 for Figure 4 Schematic diagram from another angle.

[0024] Figure 6 for Figure 4 Top view of .

[0025] Figure 7 It is a three-dimensional diagram of the adjusting rotary rod of the present utility model.

[0026] As shown in the figure:

[0027] 1. Handrail body, 2. Column tube, 3. Body, 4. Rotating connection block, 5. Rectangular block, 6. Column tube cover, 7. Rotary rod fixing base, 8. Adjustment rod, 9. Through hole, 10. Groove, 11. Base, 12. Adjustment button, 13. Second positioning hole, 14. First drive rod, 15. Second drive rod, 16. Spring pin, 17. Spring, 18. Upper limit block, 19. Lower limit block, 20. First positioning hole. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-7 As shown, the present invention provides a 4D adjustable armrest, comprising an armrest body 1, a column tube 2, and a barrel 3. The armrest body 1 is mounted on top of the barrel 3, the bottom of which is positioned outside the column tube 2 and can be extended and retracted upward. The bottom of the column tube 2 is provided with a bent end for connection to the seat, which is bolted to the seat. The top of the barrel 3 is provided with a rotating connection block 4, and the top of the rotating connection block 4 is provided with an upwardly protruding rectangular block 5. The rectangular block 5 serves as the reference point for the rotation of the armrest body.

[0030] The top of the column tube 2 is provided with a column tube cover plate 6, and the top of the column tube cover plate 6 is provided with a rotary rod fixing seat 7. The rotary rod fixing seat 7 is fixed to the barrel 3 and has an adjustment rotary rod 8 inside. The adjustment rotary rod 8 is arranged vertically. The column tube cover plate 6 is provided with a through hole 9, and the outer wall of the adjustment rotary rod 8 is provided with at least a plurality of grooves 10 arranged along the height direction. The top of the adjustment rotary rod 8 is connected to a base 11, and the outer end of the base 11 is connected to an adjustment button 12. The two are fixedly connected, and the adjustment button 12 moves back and forth in the working direction.

[0031] like Figure 2 As shown, the up and down movement of the cylinder body 3 is through the guide rail structure between the inner wall of the cylinder body 3 and the outer wall of the column tube 2. The inner wall of the cylinder body 3 has both ridges and grooves arranged along the height direction, and the corresponding outer wall of the column tube 2 also has ridges and grooves arranged along the height direction, and then the ridges and grooves at the corresponding positions are embedded and movably matched.

[0032] like Figure 3 As shown, the base 11 is slidably connected to the bottom of the rotating rod fixing seat 7, and a slide rail structure is provided on both sides of the base 11 and the bottom of the rotating rod fixing seat 7. Raised strips are provided on both sides of the base 11, and grooves are provided on both sides of the bottom of the rotating rod fixing seat 7. The raised strips on each side are slidably connected in the groove.

[0033] like Figure 6 As shown, the through hole 9 is a long waist-shaped hole, and the cross-section of the body of the adjusting rotary rod 8 matches the long waist hole. The outer diameter of the adjusting rotary rod 8 is smaller than the inner diameter of the through hole 9, so that the body of the adjusting rotary rod 8 can smoothly pass through the through hole 9 up and down when the position is aligned.

[0034] like Figure 6 As shown, the base 11 is provided with a first positioning hole 20 and a second positioning hole 13, and the top end of the adjusting rotary rod 8 is provided with a first driving rod 14 and a second driving rod 15, the first driving rod 14 is movably embedded in the first positioning hole 20, and the second driving rod 15 is movably embedded in the second positioning hole 13; when the adjusting rotary rod 8 is freely movable up and down, the first driving rod 14 is close to the position closest to the second driving rod 15, so that the adjusting rotary rod 8 is aligned with the through hole 9; when the adjusting rotary rod 8 is positioned up and down, the first driving rod 14 and the second driving rod 15 are located on a diagonal line of the adjusting rotary rod 8, and the distance between the two is the farthest, so that the groove 10 of the adjusting rotary rod 8 is embedded in the bottom plate of the column tube cover 6.

[0035] like Figure 4 and Figure 5As shown, the base 11 is provided with a spring pin 16 and a spring 17. The spring 17 is sleeved outside the spring pin 16, with one end abutting against the base 11 and the other end abutting against the inner wall of the rotating rod fixing seat 7. The adjusting button 12 is reset by the spring 17 after being pushed inward, and the adjusting button 12 also needs to be positioned.

[0036] like Figure 7 As shown, the top of the adjusting rotary rod 8 is provided with an upper limit block 18 and the bottom is provided with a lower limit block 19. The outer dimensions of the upper limit block 18 and the lower limit block 19 are both larger than the size of the through hole 9, that is, the upper limit block 18 and the lower limit block 19 cannot pass through the through hole 9 at any angle, preventing the adjusting rotary rod 8 from falling out.

[0037] Working principle of handrail column height adjustment:

[0038] The adjusting button 12 is pushed inward to move the base 11, and the adjusting button 12 squeezes the spring 17, and at the same time pushes the adjusting rod 8 to rotate circumferentially in one direction, so that the adjusting rod 8 is aligned with the through hole 9, so that the barrel 3, the adjusting rod 8, and the base 11 can move freely up and down; at this time, the armrest body is pulled up or pushed down by external force to adjust to the appropriate height.

[0039] like Figure 6 As shown, after the adjustment is completed, the adjusting button 12 is released, and the spring 17 pushes the adjusting button 12 to the outermost position and is positioned at this position. The adjusting button 12 is pulled outward to move the base 11 and at the same time pushes the adjusting rod 8 to rotate circumferentially in another direction, so that the groove 10 of the adjusting rod 8 is embedded in the bottom plate of the column tube cover 6, so that the barrel 3, the adjusting rod 8, and the base 11 are positioned up and down, and the spring 17 pushes the adjusting button 12 to the outermost position and is positioned at this position.

Claims

1. An armrest with 4D adjustment, characterized by: The invention comprises an armrest body (1), a column tube (2) and a cylinder body (3); the armrest body (1) is arranged on the top of the cylinder body (3); the bottom of the cylinder body (3) is sleeved outside the column tube (2) and is telescopically movable; the bottom of the column tube (2) is provided with a bent end connected to a seat; the top of the cylinder body (3) is provided with a rotating connection block (4); the top of the rotating connection block (4) is provided with an upwardly protruding rectangular block (5); the top of the column tube (2) is provided with a column tube cover plate (6), a rotary rod fixing seat (7) is provided on the top of the column tube cover (6), the rotary rod fixing seat (7) is fixed to the barrel (3) and an adjusting rotary rod (8) is provided inside, a through hole (9) is provided on the column tube cover (6), and the outer side wall of the adjusting rotary rod (8) is provided with at least a plurality of grooves (10) arranged along the height direction, the top of the adjusting rotary rod (8) is connected to a base (11), and the outer end of the base (11) is connected to an adjusting button (12); The adjusting button (12) is pushed inward to move the base (11) and simultaneously push the adjusting rod (8) to rotate in one direction in the circumferential direction, so that the adjusting rod (8) is aligned with the through hole (9), thereby allowing the barrel (3), the adjusting rod (8) and the base (11) to move freely up and down; The adjusting button (12) is pulled outward to move the base (11) and simultaneously push the adjusting rotary rod (8) to rotate in another circumferential direction, so that the groove (10) of the adjusting rotary rod (8) is embedded in the bottom plate of the column tube cover (6), thereby positioning the barrel (3), the adjusting rotary rod (8) and the base (11) up and down.

2. The armrest with 4D adjustment according to claim 1, characterized in that: The cylinder body (3) moves up and down through the guide rail structure between the inner wall of the cylinder body (3) and the outer wall of the column tube (2).

3. The armrest with 4D adjustment according to claim 1, characterized in that: The base (11) is slidably connected to the bottom of the rotating rod fixing seat (7), and slide rail structures are provided on both sides of the base (11) and the bottom of the rotating rod fixing seat (7).

4. The armrest with 4D adjustment according to claim 1, characterized in that: The through hole (9) is a long waist-shaped hole, and the cross section of the body of the adjusting rotary rod (8) matches the long waist hole.

5. The armrest with 4D adjustment according to claim 1, characterized in that: The base (11) is provided with a first positioning hole (20) and a second positioning hole (13), and the top end of the adjusting rotary rod (8) is provided with a first driving rod (14) and a second driving rod (15), the first driving rod (14) is movably embedded in the first positioning hole (20), and the second driving rod (15) is movably embedded in the second positioning hole (13); when the adjusting rotary rod (8) is in a state of free movement up and down, the first driving rod (14) is close to the position closest to the second driving rod (15), so that the adjusting rotary rod (8) is aligned with the through hole (9); when the adjusting rotary rod (8) is in an up and down positioning state, the first driving rod (14) and the second driving rod (15) are located on a diagonal line of the adjusting rotary rod (8), and the distance between the two is the farthest, so that the groove (10) of the adjusting rotary rod (8) is embedded in the bottom plate of the column tube cover plate (6).

6. The armrest with 4D adjustment according to claim 1, characterized in that: The base (11) is provided with a spring pin (16) and a spring (17). The spring (17) is sleeved outside the spring pin (16), one end of the spring is against the base (11), and the other end is against the inner wall of the rotating rod fixing seat (7). After the adjusting button (12) is pushed inward, it is reset by the spring (17).

7. The armrest with 4D adjustment according to claim 1, characterized in that: An upper limit block (18) is provided on the top of the regulating rotary rod (8), and a lower limit block (19) is provided on the bottom. The outer dimensions of the upper limit block (18) and the lower limit block (19) are both larger than the dimensions of the through hole (9).

Images