Detachable seat armrest

Abstract

The utility model relates to a detachable seat armrest, which is used for solving the technical problems that in the prior art, an armrest plate is gradually dirty along with long-time use of a seat, so that the appearance of the armrest plate becomes poor, the appearance and the use effect are influenced, and the armrest plate is integrally arranged and is inconvenient for a user to disassemble and clean. Comprising a first supporting rod and a handrail plate, the handrail plate is arranged on the first supporting rod, a connecting block is fixedly arranged at the bottom of the handrail plate, receding holes are formed in the two opposite sides of the connecting block, and pressing blocks are slidably arranged in the two receding holes; first springs are fixedly arranged on the two opposite sides of the bottom of the handrail plate, the two first springs are fixedly connected with the two pressing blocks correspondingly, a mounting cavity is formed in the top of the first supporting rod, a protruding block is arranged on the inner wall of the mounting cavity in the circumferential direction, and clamping blocks are fixedly arranged on the two pressing blocks; and the two clamping blocks extend into the mounting cavity and are clamped with the convex block.

Description

Technical Field

[0001] The utility model relates to the technical field of armrests, in particular to a detachable chair armrest. Background Art

[0002] The armrest panel at the upper end of the existing office chair armrest is generally provided with a flexible cloth cover, making the user more comfortable and skin-friendly when using the armrest; and the flexible cloth cover can also be provided in different colors to adapt to the style of the chair.

[0003] The seat armrests in the prior art, such as the utility model patent document with authorization announcement number "CN218738052U" and patent name "A Backrest and Armrest Linked Office Chair", disclose a seat armrest, including a seat back and a seat armrest installed on the seat back, the seat back and the seat armrest are rotatably connected, and a reset member for resetting the seat armrest is provided between the seat armrest and the seat back.

[0004] The armrests in the above patent document will gradually become dirty as the chair is used for a long time, making the armrests look worse and affecting the appearance and use effect. Since the armrests are arranged as an integrated unit, it is not convenient for users to disassemble and clean them. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies of the existing technology and propose a detachable seat armrest to solve the technical problem mentioned in the background technology that the armrest of the existing technology will gradually become dirty as the seat is used for a long time, making the armrest board look worse, affecting the appearance and use effect, and the armrest board is inconvenient for users to disassemble and clean because it is an integrated arrangement.

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

[0007] A detachable chair armrest comprises a first support rod and an armrest plate, the armrest plate being arranged on the first support rod, a connecting block being fixedly provided at the bottom of the armrest plate, avoidance holes being opened on opposite sides of the connecting block, pressing blocks being slidably provided in the two avoidance holes, a first spring being fixedly provided on opposite sides of the bottom of the armrest plate and the two first springs being fixedly connected to the two pressing blocks respectively, an installation cavity being opened at the top of the first support rod, a protrusion being circumferentially provided on the inner wall of the installation cavity, a clamping block being fixedly provided on the two pressing blocks, the two clamping blocks both extending into the installation cavity and being clamped with the protrusion.

[0008] Working principle:

[0009] When the user needs to remove the armrest plate, the user presses the two pressing blocks so that the two pressing blocks are close to each other, so that the two clamping blocks on the two pressing blocks are disengaged from the protrusions, and then the user can disengage the connecting block from the first support rod, thereby completing the disassembly of the armrest plate and the first support rod. When the user needs to install the armrest plate on the first support rod, the user first presses the two pressing blocks so that the two pressing blocks are close to each other. At this time, the two first springs are in a compressed state. Then the user extends the two clamping blocks into the installation cavity, and then the user releases the two pressing blocks. Since the two first springs lose the external force pushing from the compressed state to the natural state, the two first springs push the two clamping blocks to engage with the protrusions, thereby completing the installation of the armrest plate and the first support rod.

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

[0011] First, a clamping block and a protrusion are provided, and the armrest plate can be fixed on the first support rod through the clamping of the clamping block and the protrusion.

[0012] Second, a first spring and an avoidance hole are provided. The first spring can make the clamping block close to the protrusion, and the avoidance hole can guide the movement of the clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at the center is enlarged;

[0015] Figure 3 This is a schematic diagram of the assembly structure of the handrail plate and the connecting block;

[0016] Figure 4 A schematic diagram of the assembly structure of the first support rod and the second ball;

[0017] Figure 5 This is a schematic diagram of the assembly structure of the first support rod and the second support rod.

[0018] Explanation of the accompanying drawings: first support rod 1, armrest plate 2, connecting block 3, avoidance hole 4, pressing block 6, first spring 7, mounting cavity 8, protrusion 9, snap-in block 10, annular groove 11, first ball 12, mounting groove 13, second spring 14, second ball 15, snap-in groove 16, second support rod 17, first snap-in strip 18, sliding block 19, mounting block 20, second snap-in strip 21, elastic member 22, through hole 23, strip hole 24. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] Example:

[0021] like Figure 1 and Figure 2 As shown, a detachable chair armrest includes a first support rod 1 and an armrest plate 2. The armrest plate 2 is arranged on the first support rod 1. A connecting block 3 is fixed to the bottom of the armrest plate 2. An annular groove 11 is opened at the end of the first support rod 1. The connecting block 3 is an annular structure and the connecting block 3 is slidably arranged in the annular groove 11. The annular groove 11 can facilitate the rotation of the connecting block 3 on the first support rod 1. Avoidance holes 4 are opened on opposite sides of the connecting block 3. Pressing blocks 6 are slidably arranged in the two avoidance holes 4. First springs 7 are fixed to opposite sides of the bottom of the armrest plate 2 and the two first springs 7 are separated. It is fixedly connected to the two pressing blocks 6, and a mounting cavity 8 is opened at the top of the first support rod 1. A protrusion 9 is provided on the inner wall of the mounting cavity 8 in a circumferential direction. A clamping block 10 is fixed on the two pressing blocks 6. The two clamping blocks 10 are both extended into the mounting cavity 8 and clamped with the protrusion 9. A plurality of first balls 12 are provided on the outer wall of the protrusion 9 and the clamping block 10 abuts against the plurality of first balls 12. The first spring 7 can make the clamping block 10 on the pressing block 6 close to the protrusion 9. The setting of the first ball 12 can reduce the friction between the protrusion 9 and the clamping block 10 when the clamping block 10 and the protrusion 9 rotate.

[0022] like Figure 1 and Figure 2 and Figure 3 As shown, a plurality of annular mounting grooves 13 are provided in the annular groove 11, and a second spring 14 is fixed in each of the mounting grooves 13. A plurality of second balls 15 are slidably provided in each of the mounting grooves 13, and the second balls 15 are respectively fixed to the second springs 14. Through the provision of the second springs 14, the second balls 15 can be pushed into the mounting grooves 13 when they are squeezed. A plurality of snap-fitting grooves 16 are provided at the bottom of the connecting block 3, and the snap-fitting grooves 16 are respectively snap-fitted with the second balls 15. When the snap-fitting grooves 16 are rotated above the second balls 15, the second balls 15 can be snap-fitted with the snap-fitting grooves 16 under the push of the second springs 14.

[0023] like Figure 1 and Figure 5As shown, a second support rod 17 is provided at the bottom of the first support rod 1 and the bottom of the first support rod 1 is slidably arranged in the second support rod 17. An adjustment component for adjusting the vertical height of the first support rod 1 is provided in the second support rod 17. The adjustment component includes a first clamping strip 18, a sliding block 19, a mounting block 20, a second clamping strip 21 and an elastic member 22. The elastic member 22 is a spring. The first clamping strip 18 is fixed to the inner wall of the first support rod 1. Horizontal through holes 23 are provided on opposite sides of the second support rod 17. Vertical strip holes 24 are provided on opposite sides of the first support rod 1. The two ends of the sliding block 19 slide through the strip hole 24 and the through hole 23 in turn and outward. Extension, through the through hole 23 can guide the sliding block 19, and the setting of the strip hole 24 can prevent the sliding block 19 from colliding with the first support rod 1 when the first support rod 1 moves. The mounting block 20 is fixed on the inner wall of the second support rod 17 and the mounting block 20 is located in the strip hole 24. The second clamping strip 21 is fixed on the sliding block 19 and the second clamping strip 21 is clamped with the first clamping strip 18. The two ends of the elastic member 22 are respectively fixed on the mounting block 20 and the sliding block 19. The second clamping block 10 can be pushed by the elastic member 22 to be tightly connected with the first clamping strip 18. The elastic member 22 is used to push the second clamping strip 21 to clamp with the first clamping strip 18.

[0024] Working principle:

[0025] When the user needs to disassemble the armrest panel 2, the user first presses the two pressing blocks 6, and the two pressing blocks 6 approach each other, and the two first springs 7 change from a natural state to a compressed state, so that the two clamping blocks 10 on the two pressing blocks 6 approach each other, and then the two clamping blocks 10 are disengaged from the clamping relationship with the protrusion 9. After that, the user can withdraw the connecting block 3 from the annular groove 11, thereby completing the disassembly of the armrest panel 2.

[0026] When the user needs to change the angle of the armrest board 2, the user rotates the armrest board 2, and the rotation of the armrest board 2 drives the connecting block 3 to rotate, and the connecting block 3 can rotate in the annular groove 11. When the connecting block 3 rotates, the clamping groove 16 on the connecting block 3 can continuously cross the second ball 15 in the annular groove 11, and the second ball 15 is squeezed, so that the second ball 15 squeezes the second spring 14, and the second ball 15 retreats into the mounting groove 13. When the clamping groove 16 on the connecting block 3 moves again to above the second ball 15, the second ball 15 is re-engaged with the clamping groove 16, thereby limiting the rotation angle of the armrest board 2.

[0027] When the user needs to change the vertical height of the armrest board 2, the user presses the sliding block 19, and the sliding block 19 can slide in the through hole 23, so that the second clamping strip 21 on the sliding block 19 is disengaged from the first clamping strip 18 on the first support rod 1. Then the user moves the first support rod 1 to a suitable height, and then the user releases the pressure on the sliding block 19. Under the action of the elastic member 22, the sliding block 19 pushes the second clamping strip 21 to re-engage with the first clamping strip 18, thereby fixing the moved first support rod 1.

[0028] 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. A detachable chair armrest, characterized in that: The invention comprises a first support rod (1) and an armrest plate (2), wherein the armrest plate (2) is arranged on the first support rod (1), a connecting block (3) is fixedly provided at the bottom of the armrest plate (2), avoidance holes (4) are provided on opposite sides of the connecting block (3), and pressing blocks (6) are slidably provided in the two avoidance holes (4), first springs (7) are fixedly provided on opposite sides of the bottom of the armrest plate (2), and the two first springs (7) are respectively fixedly connected to the two pressing blocks (6), a mounting cavity (8) is provided at the top of the first support rod (1), and a protrusion (9) is provided on the inner wall of the mounting cavity (8), and a clamping block (10) is fixedly provided on the two pressing blocks (6), and the two clamping blocks (10) extend into the mounting cavity (8) and are clamped with the protrusion (9).

2. The detachable chair armrest according to claim 1, characterized in that: An annular groove (11) is provided at the end of the first support rod (1); the connecting block (3) is an annular structure and is slidably arranged in the annular groove (11); a plurality of first balls (12) are provided on the outer wall of the protrusion (9), and the clamping block (10) abuts against the plurality of first balls (12).

3. The detachable chair armrest according to claim 2, characterized in that: A plurality of mounting grooves (13) arranged in an annular shape are provided in the annular groove (11), a second spring (14) is fixedly provided in each of the mounting grooves (13), a plurality of second balls (15) are slidably provided in each of the mounting grooves (13), and the plurality of second balls (15) are respectively fixedly connected to the plurality of second springs (14), and a plurality of engaging grooves (16) are provided at the bottom of the connecting block (3), and the plurality of engaging grooves (16) are respectively engaged with the plurality of second balls (15).

4. The detachable chair armrest according to claim 1, characterized in that: A second support rod (17) is provided at the bottom of the first support rod (1), and the bottom of the first support rod (1) is slidably arranged in the second support rod (17), and an adjustment component for adjusting the vertical height of the first support rod (1) is provided in the second support rod (17).

5. The detachable chair armrest according to claim 4, characterized in that: The adjustment assembly comprises a first clamping strip (18), a sliding block (19), a mounting block (20), a second clamping strip (21) and an elastic member (22); the first clamping strip (18) is fixedly provided on the inner wall of the first support rod (1); the second support rod (17) is provided with transverse through holes (23) on opposite sides; the first support rod (1) is provided with vertical strip holes (24) on opposite sides; the two ends of the sliding block (19) slide through the strip holes (24) and the through holes (23) in sequence. 23) and extends outward, the mounting block (20) is fixed on the inner wall of the second support rod (17) and the mounting block (20) is located in the strip hole (24), the second clamping strip (21) is fixed on the sliding block (19) and the second clamping strip (21) is clamped with the first clamping strip (18), and the two ends of the elastic member (22) are respectively fixed on the mounting block (20) and the sliding block (19), and the elastic member (22) is used to push the second clamping strip (21) to clamp with the first clamping strip (18).

6. The detachable chair armrest according to claim 5, characterized in that: The elastic member (22) is a spring.

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