Adjustable handrail

Abstract

The utility model relates to an adjustable handrail, which is used for solving the technical problems that when a handrail in the prior art is actually used and a person is in an office state, the handrail cannot be adjusted, so that the fall between the handrail and a table top is large, the elbow of the person cannot be supported, and the comfortable riding experience cannot be obtained. Comprising a hollow supporting column and a connecting column, the connecting column is slidably arranged in the supporting column, a lower armrest plate is rotatably arranged at the end, away from the supporting column, of the connecting column with the connecting column as the axis, an upper armrest plate is slidably arranged on the lower armrest plate, and a first limiting assembly used for limiting the rotating angle of the lower armrest plate is arranged on the connecting column; a second limiting assembly used for limiting the sliding distance of the upper armrest plate is arranged in the lower armrest plate.

Description

Technical Field

[0001] The utility model relates to the technical field of seat processing, in particular to an adjustable armrest. Background Art

[0002] A chair is a piece of seating with a backrest and some with armrests. It is one of the essential items in life and is found indoors, outdoors, and in transportation. A chair generally consists of legs, side supports, a seat panel, and a backrest.

[0003] A chair in the prior art, such as the utility model patent document with authorization announcement number "CN219460701U" and patent name "Office chair for office workers to rest", discloses a chair including a chair body, armrest one and armrest two, wherein the armrest one and armrest two are respectively installed on the side ends of the chair body by bolts, and also includes: a chair mechanism for office workers to rest, wherein the chair mechanism is installed on the chair body, and the chair mechanism includes a support plate and a ring, wherein the support plate is fixedly installed on the side end of the ring, and the ring is sleeved on the outer wall of the armrest one.

[0004] When this type of armrest is actually used, when a person is in an office state, because the armrest itself cannot be adjusted, there is a large difference between the armrest and the desktop, resulting in the person's elbows not being supported, and thus unable to obtain a comfortable riding experience. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies of the existing technology and propose an adjustable armrest to solve the technical problem that when the armrests of the existing technology mentioned in the background technology are actually used, when people are in an office state, the armrests themselves cannot be adjusted, resulting in a large difference between the armrests and the desktop, resulting in the people's elbows being unable to obtain support, and thus unable to obtain a comfortable riding experience.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] An adjustable armrest comprises a hollow supporting column and a connecting column, wherein the connecting column is slidably arranged in the supporting column, a lower armrest plate is provided on the connecting column away from the end of the supporting column and rotates around the connecting column as the axis, an upper armrest plate is slidably arranged on the lower armrest plate, a first limiting component for limiting the rotation angle of the lower armrest plate is provided on the connecting column, and a second limiting component for limiting the sliding distance of the upper armrest plate is provided in the lower armrest plate.

[0008] Working principle:

[0009] When the user needs to adjust the height of the upper armrest, the user can change the vertical height of the upper armrest by sliding the connecting column. The position of the upper armrest can be changed by sliding the upper armrest. The second limiting component can limit the sliding upper armrest. When the angle of the upper armrest needs to be changed, the user can rotate the lower armrest on the connecting column. The first limiting component can limit the rotated lower armrest.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] First, an upper armrest plate and a lower armrest plate are provided, and the upper armrest plate can slide on the lower armrest plate, thereby changing the support range of the upper armrest plate by changing the position of the upper armrest plate.

[0012] Second, a first limiting component is provided, which can limit the lower armrest plate after rotation, thereby preventing the lower armrest plate from rotating at will after being subjected to force.

[0013] Third, a second limiting component is provided, which can limit the upper armrest plate after sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the assembly structure at A in the middle;

[0016] Figure 3 It is a structural diagram of the fixed block.

[0017] Explanation of the accompanying drawings: support column 1, connecting column 2, lower armrest plate 3, upper armrest plate 4, bearing center column 5, bearing 6, mounting rod 7, slider 8, first spring 9, fixing block 10, snap-in block 11, through groove 12, snap-in groove 13, shielding box 14, slide groove 15, mounting block 16, second spring 17, snap bead 18, mounting groove 19, replacement plate 20, magnet 21, socket 22, bolt 23, snap-in groove 24. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0019] Example:

[0020] like Figure 1 and Figure 2As shown, an adjustable armrest includes a hollow supporting column 1 and a connecting column 2. The connecting column 2 is slidably arranged in the supporting column 1. A plurality of insertion holes 22 are vertically opened on the connecting column 2. A bolt 23 is slidably passed through the supporting column 1 and the bolt 23 is threadedly connected to one of the insertion holes 22. The vertical height of the upper armrest plate 4 can be changed by moving the position of the connecting column 2 on the supporting column 1. The threaded connection between the bolt 23 and the insertion hole 22 can limit the connection column 2 after movement. A hole for the bolt 23 to pass through is opened on the supporting column 1.

[0021] like Figure 1 and Figure 2 As shown, a lower armrest plate 3 is provided at the end of the connecting column 2 away from the supporting column 1 and rotates around the connecting column 2 as the axis. A bearing center column 5 is fixedly provided on the top of the connecting column 2. A bearing 6 is fixedly provided at the bottom of the lower armrest plate 3 and the bearing center column 5 is fixedly connected to the bearing 6. The lower armrest plate 3 can be rotated on the bearing center column 5 through the bearing 6.

[0022] like Figure 1 and Figure 2 and Figure 3 As shown, a first limiting component for limiting the rotation angle of the lower armrest plate 3 is provided on the connecting column 2, and the first limiting component includes a mounting rod 7, a slider 8, a first spring 9, a fixed block 10 and a clamping block 11. A through slot 12 is provided at the bottom of the lower armrest plate 3, and the mounting rod 7 is fixed in the through slot 12. The slider 8 is slidably arranged on the mounting rod 7 and the slider 8 slides against the side wall of the through slot 12. The movement range of the slider 8 can be limited by the through slot 12, and the rotation of the slider 8 when moving is reproduced. The two ends of the first spring 9 are respectively fixed on the slider 8 and the inner wall of the through slot 12. The fixed block 10 is fixed on the center column 5 of the bearing 6 and a number of equidistant clamping grooves 13 are opened circumferentially on the fixed block 10. The clamping block 11 is fixed on the slider 8 and the clamping block 11 is used When the upper armrest plate 4 needs to be rotated, the user can move the clamping block 11 away from the clamping slot 13 and rotate the upper armrest plate 4. After the rotation is completed, the user re-engages the clamping block 11 with the clamping slot 13. A shielding box 14 for shielding the slider 8 and the clamping block 11 is fixed to the bottom of the lower armrest plate 3. A sliding groove 15 is opened on the shielding box 14. One side of the slider 8 slides through the sliding groove 15 and extends to the outside. The user can move the slider 8 through the slider 8 extending to the outside of the shielding box 14, and the shielding box 14 shields the fixed block 10 and the slider 8 to improve the aesthetics.

[0023] like Figure 1 and Figure 2As shown, an upper armrest plate 4 is slidably provided on the lower armrest plate 3, a strip groove is provided on the lower armrest plate 3, a strip block for sliding in the strip groove is fixed on the upper armrest plate 4, a second limiting component for limiting the sliding distance of the upper armrest plate 4 is provided in the lower armrest plate 3, the second limiting component includes a mounting block 16, a second spring 17 and a card bead 18, the mounting block 16 is fixed on the top of the lower armrest plate 3, a mounting groove 19 is provided on the top of the mounting block 16, and the second spring 17 and the card bead 18 are provided. The spring 17 is fixed in the mounting groove 19, the card bead 18 is slidably arranged in the mounting groove 19 and the card bead 18 is fixedly connected to the second spring 17. A plurality of card slots 24 are provided at the bottom of the upper armrest plate 4, and the card bead 18 is engaged with one of the card slots 24. Moving the upper armrest plate 4 can make the card slot 24 at the bottom of the upper armrest plate 4 continuously pass over the card bead 18. The card bead 18 is subjected to the top thrust of the upper armrest plate 4 to compress and deform the second spring 17, and then the card bead 18 can retreat into the mounting groove 19.

[0024] like Figure 1 and Figure 2 As shown, the upper armrest panel 4 is provided with a replacement plate 20, and a magnet 21 for adsorbing the replacement plate 20 is fixed on the upper armrest panel 4. The replacement plate 20 abuts against the part of the human body that needs support. When the replacement plate 20 needs to be cleaned or the material of the replacement plate 20 is changed according to the season, the replacement plate 20 can be removed from the upper armrest panel 4 through the magnet 21.

[0025] Working principle:

[0026] First, connect the support column 1 to the seat body. When the user needs to change the vertical height of the upper armrest board 4, the user disengages the bolt 23 from the threaded connection with the socket 22, and then moves the connecting column 2 in the support column 1. When the connecting column 2 moves to the appropriate height, the user re-threads the bolt 23 with the socket 22 on the connecting column 2, thereby changing the distance between the upper armrest board 4 and the support column 1.

[0027] When the user needs to change the rotation angle of the upper armrest board 4, the user moves the slider 8, and the slider 8 can move in the through groove 12 and the slide groove 15. The movement of the slider 8 can compress the first spring 9, so that the clamping block 11 on the slider 8 gradually moves away from the clamping groove 13 on the fixed block 10. When the clamping block 11 is disengaged from the clamping groove 13, the user can change the rotation angle of the lower armrest board 3 through the bearing 6 and the center column 5 of the bearing 6. When it is rotated to the appropriate angle, the user re-engages the clamping block 11 with the clamping groove 13 on the fixed block 10, thereby limiting the rotation angle of the lower armrest board 3.

[0028] When the user needs to change the support range of the upper armrest plate 4, the user can slide the upper armrest plate 4 on the lower armrest plate 3. Moving the upper armrest plate 4 can make the slot 24 at the bottom of the upper armrest plate 4 continuously pass over the card bead 18. The card bead 18 is pushed by the upper armrest plate 4 to compress and deform the second spring 17, and then the card bead 18 can retreat into the installation slot 19, thereby limiting the upper armrest plate 4 after movement.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An adjustable armrest, characterized in that: The utility model comprises a hollow support column (1) and a connecting column (2), wherein the connecting column (2) is slidably arranged in the support column (1), and a lower handrail plate (3) is provided on the connecting column (2) away from the end of the support column (1) and rotates around the connecting column (2) as an axis, and an upper handrail plate (4) is slidably arranged on the lower handrail plate (3), and a first limiting component for limiting the rotation angle of the lower handrail plate (3) is provided on the connecting column (2), and a second limiting component for limiting the sliding distance of the upper handrail plate (4) is provided in the lower handrail plate (3).

2. The adjustable armrest according to claim 1, characterized in that: A bearing center column (5) is fixedly provided on the top of the connecting column (2), a bearing (6) is fixedly provided on the bottom of the lower handrail plate (3), and the bearing center column (5) is fixedly connected to the bearing (6).

3. The adjustable armrest according to claim 2, characterized in that: The first limiting component includes a mounting rod (7), a slider (8), a first spring (9), a fixed block (10) and a clamping block (11); a through slot (12) is provided at the bottom of the lower armrest plate (3); the mounting rod (7) is fixed in the through slot (12); the slider (8) is slidably mounted on the mounting rod (7) and the slider (8) is in sliding contact with the side wall of the through slot (12); the two ends of the first spring (9) are respectively fixed on the slider (8) and the inner wall of the through slot (12); the fixed block (10) is fixed on the bearing center column (5) and a plurality of equidistant clamping slots (13) are provided circumferentially on the fixed block (10); the clamping block (11) is fixed on the slider (8) and the clamping block (11) is used to clamp with one of the clamping slots (13).

4. The adjustable armrest according to claim 3, characterized in that: A shielding box (14) for shielding the slider (8) and the clamping block (11) is fixedly provided at the bottom of the lower armrest plate (3); a sliding groove (15) is opened on the shielding box (14); one side of the slider (8) slides through the sliding groove (15) and extends outward.

5. The adjustable armrest according to claim 1, characterized in that: The second limiting component includes a mounting block (16), a second spring (17) and a card bead (18), wherein the mounting block (16) is fixed on the top of the lower armrest plate (3), a mounting groove (19) is provided on the top of the mounting block (16), the second spring (17) is fixed in the mounting groove (19), the card bead (18) is slidably provided in the mounting groove (19) and the card bead (18) is fixedly connected to the second spring (17), and a plurality of card grooves (24) are provided on the bottom of the upper armrest plate (4), and the card bead (18) is engaged with one of the card grooves (24).

6. The adjustable armrest according to claim 1, characterized in that: The upper armrest plate (4) is provided with a replacement plate (20), and a magnet (21) for adsorbing the replacement plate (20) is fixedly provided on the upper armrest plate (4).

7. The adjustable armrest according to claim 1, characterized in that: A plurality of insertion holes (22) are vertically provided on the connecting column (2), a bolt (23) is slidably passed through the supporting column (1), and the bolt (23) is threadedly connected to one of the insertion holes (22).

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