Seat armrest height adjusting mechanism, seat armrest and seat

Abstract

The utility model belongs to the technical field of seat handrails, and particularly relates to a seat handrail height adjusting mechanism, a seat handrail and a seat, the seat handrail height adjusting mechanism comprises a telescopic assembly, the telescopic assembly comprises a support pipe and a sleeve pipe, and the sleeve pipe is sleeved on the support pipe and is in sliding connection with the support pipe; a straight-through part and a plurality of limiting parts communicating with the straight-through part are symmetrically arranged on the two sides of the supporting pipe. The locking assembly comprises a clamping piece rotationally connected with the sleeve and a first clamping rod penetrating through the bottom of the clamping piece; wherein the clamping piece is located in the supporting pipe; the first clamping rods are positioned in the two limiting parts at the same height; according to the seat armrest height adjusting mechanism, when the seat armrest and the seat move upwards along the sleeve through the supporting pipe, the first clamping rod retreats from the limiting part into the straight-through part, and the first clamping rod drives the clamping piece to rotate in the sleeve; when the sleeve reaches the preset height, the clamping piece is rotated, so that the first clamping rod enters the limiting part again, the sleeve moves downwards and is limited, and the effect of continuously and smoothly adjusting the height is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat armrests, and in particular relates to a seat armrest height adjustment mechanism, a seat armrest and a seat. Background Art

[0002] With the continuous improvement of modern office environment and the improvement of people's quality of life, chairs, as one of the indispensable furniture in daily work and life, are increasingly focusing on humanization and comfort in their design. As an important part of the chair, the armrest not only supports the arm, but also directly affects the user's sitting comfort and overall experience.

[0003] The existing patent CN220988205U discloses a chair armrest and a seat with comprehensive adjustment. The armrest height adjustment in the patent is achieved by hooking the hook body of the T-shaped hook 9 to the positioning holes of different heights. Since the positioning holes are discrete points arranged along the length direction, the T-shaped hook 9 needs to be unlocked when the armrest is adjusted, and then the armrest can be adjusted to the desired height and locked again, which makes the user feel poor.

[0004] Therefore, in order to solve the above problems, it is necessary to design a seat armrest height adjustment mechanism, a seat armrest and a seat. Utility Model Content

[0005] The utility model aims to provide a seat armrest height adjustment mechanism, a seat armrest and a seat, so as to solve the technical problem of inconvenience in adjusting the height of the armrest.

[0006] In order to solve the above technical problems, the utility model provides a seat armrest height adjustment mechanism, comprising:

[0007] The telescopic assembly comprises: a support tube and a sleeve sleeved on the support tube and slidably connected to the support tube; wherein

[0008] A straight-through portion and a plurality of limiting portions connected to the straight-through portion are symmetrically arranged on both sides of the support tube;

[0009] The locking assembly comprises: a clamping member rotatably connected to the sleeve and a first clamping rod penetrating the bottom of the clamping member;

[0010] The clamping member is located in the support tube; and

[0011] The first clamping rod is located in two limiting parts at the same height;

[0012] When the support tube moves upward along the sleeve, the first clamping rod withdraws from the limiting portion to the straight-through portion, and the first clamping rod drives the clamping member to rotate in the sleeve;

[0013] When the sleeve reaches a predetermined height, the clamping piece is rotated to allow the first clamping rod to re-enter the limiting portion to limit the downward movement of the sleeve.

[0014] Furthermore, the top of the limiting portion is an upwardly inclined portion; wherein

[0015] The first clamping rod is adapted to be in sliding contact with the inclined portion.

[0016] Furthermore, the top of the limiting portion is an upward arc; wherein

[0017] The first clamping rod is suitable for sliding contact with the arc portion.

[0018] Furthermore, a rotating base is provided on the top of the sleeve;

[0019] The locking assembly also includes: a button that passes through the top of the side of the sleeve, and a spring that is arranged between the clamping member and the rotating base;

[0020] The button is connected to the clamping member; and

[0021] The button is adapted to be retracted into the sleeve when pressed, and to push the clamping member to rotate around the sleeve to compress the spring, and to drive the first clamping rod to withdraw from the limiting portion to the straight-through portion;

[0022] The spring is suitable for driving the clamping member and the button to reset when the deformation rebounds, so that the first clamping rod re-enters the limiting portion.

[0023] Furthermore, a support portion is provided on one side of the clamping member; wherein

[0024] A positioning hole is provided on the top of the support portion; and

[0025] One end of the spring is arranged in the positioning hole;

[0026] The other side of the clamping piece is provided with two clamping protrusions;

[0027] A clamping portion is formed between the two clamping protrusions;

[0028] Limiting protrusions are provided on both sides of the button;

[0029] The rear end of the button is provided with a positioning portion; wherein

[0030] One end of the two limiting protrusions is in contact with the inner wall of the sleeve; and

[0031] The positioning portion is located in the clamping portion.

[0032] Further, the locking assembly further comprises: a second clamping rod;

[0033] The top of the sleeve is provided with two first placement parts;

[0034] The bottom of the rotating base is provided with two second placement parts;

[0035] When the rotating base is suitable for being installed on the sleeve, the two first placement parts and the two second placement parts cooperate to form two rotation spaces; and

[0036] Both ends of the second clamping rod are located in the rotation space;

[0037] The bottom of the rotating base is provided with a positioning protrusion and a support block;

[0038] The other end of the spring is sleeved on the positioning protrusion; and

[0039] The support block contacts the top of the support tube.

[0040] Furthermore, wear-resistant sheets are provided on both sides of the support tube;

[0041] The sleeve is sleeved on the outer sides of the support tube and the wear-resistant sheet and is slidably connected with the wear-resistant sheet.

[0042] On the other hand, the utility model also provides a chair armrest, comprising:

[0043] The armrest body comprises: the seat armrest height adjustment mechanism.

[0044] Furthermore, the armrest body also includes: a connecting arm connected to the support tube, a rotating arm rotatably connected to the rotating base, an armrest seat hinged to the rotating arm, and an armrest plate clamped to the armrest seat.

[0045] In a third aspect, the utility model further provides a seat, comprising:

[0046] A seat frame and seat armrests arranged on both sides of the seat frame; wherein the seat armrests are suitable for being fixed on the seat frame through connecting arms.

[0047] The beneficial effects of the utility model are:

[0048] (i) When the height needs to be adjusted, the sleeve is pulled upward relative to the support tube, and the first clamping rod withdraws from the limiting portion and enters the straight-through portion, while driving the clamping member to rotate in the sleeve. When the sleeve reaches the predetermined height required by the user, the user rotates the clamping member to realign the first clamping rod and enter the limiting portion. At this time, the sleeve is locked at the current height and cannot slide freely. Through the above steps, the operation is simple and the height can be adjusted continuously and smoothly.

[0049] (ii) When the sleeve moves upward relative to the support tube, the clamping piece is driven upward, and the clamping piece drives the first clamping rod upward. The first clamping rod will contact the inclined portion or arc portion at the top of the limiting portion. Due to the design of the inclined portion or arc portion, the first clamping rod will naturally slide along the inclined portion or arc portion toward the straight portion, thereby realizing automatic unlocking. The user does not need to perform additional unlocking operations, which simplifies the adjustment process. At the same time, the inclined portion or arc portion also guides the moving trajectory of the first clamping rod, ensuring the smooth progress of the unlocking action.

[0050] (III) By pressing the button, the clamping piece is pushed to rotate, and the first clamping rod is driven to withdraw from the limiting portion to the straight-through portion. The sleeve can slide freely relative to the supporting tube to adjust the height of the armrest. When the sleeve reaches a predetermined height, the button is released, and the spring rebounds and drives the clamping piece and the button to reset. At the same time, the first clamping rod re-enters the limiting portion to lock the sleeve at the current height. Through the above steps, the operation process of height adjustment is simplified and the accuracy and stability of adjustment are improved.

[0051] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 It is an exploded view of a preferred embodiment of the overall height adjustment mechanism of the utility model;

[0055] Figure 2 It is a cross-sectional view of a preferred embodiment of the height adjustment mechanism sleeve of the utility model;

[0056] Figure 3 It is an exploded view of a preferred embodiment of a sleeve locking assembly of a height adjustment mechanism of the utility model;

[0057] Figure 4 It is a three-dimensional diagram of a preferred embodiment of a rotating base of a height adjustment mechanism of the utility model;

[0058] Figure 5 It is a three-dimensional diagram of a preferred embodiment of the seat armrest of the utility model. Figure 1 ;

[0059] Figure 6 It is a three-dimensional diagram of a preferred embodiment of the seat armrest of the utility model. Figure 2 .

[0060] In the figure:

[0061] Telescopic assembly 1, support tube 101, straight portion 1011, limit portion 1012, sleeve 102, first placement portion 1021;

[0062] Locking assembly 2, clamping member 201, supporting portion 2011, positioning hole 20111, clamping protrusion 2012, clamping portion 20121, first clamping rod 202, button 203, limiting protrusion 2031, positioning portion 2032, spring 204, second clamping rod 205;

[0063] Rotating base 3, second placement portion 301, positioning protrusion 302, supporting block 303;

[0064] Wear-resistant sheet 4 , armrest body 5 , connecting arm 501 , rotating arm 502 , armrest seat 503 , armrest plate 504 . DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0066] like Figures 1 to 4 As shown, this embodiment provides a seat armrest height adjustment mechanism, comprising:

[0067] The telescopic assembly 1 comprises: a support tube 101 and a sleeve 102 which is sleeved on the support tube 101 and slidably connected to the support tube 101; wherein the two sides of the support tube 101 are symmetrically provided with a straight-through portion 1011 and a plurality of limit portions 1012 which are connected to the straight-through portion 1011; a locking assembly 2 comprises: a clamping member 201 which is rotatably connected to the sleeve 102 and a first clamping rod 202 which passes through the bottom of the clamping member 201; wherein the clamping member 201 is located in the support tube 101; and the first clamping rod 202 is located in two limit portions 1012 at the same height; when the support tube 101 is moved along the sleeve When the sleeve 102 moves upward, the first clamping rod 202 withdraws from the limiting portion 1012 to the straight-through portion 1011, and the first clamping rod 202 drives the clamping piece 201 to rotate in the sleeve 102; when the sleeve 102 reaches a predetermined height, the clamping piece 201 is rotated to make the first clamping rod 202 re-enter the limiting portion 1012 to limit the downward movement of the sleeve 102; when the first clamping rod 202 is located in the limiting portion 1012, the sleeve 102 is locked at the current height, and when the first clamping rod 202 withdraws from the limiting portion 1012 and enters the straight-through portion 1011, the sleeve 102 can slide freely to adjust the height.

[0068] In this embodiment, when the height needs to be adjusted, the sleeve 102 is pulled upward relative to the support tube 101, and the first clamping rod 202 withdraws from the limit portion 1012 and enters the straight-through portion 1011, while driving the clamping member 201 to rotate in the sleeve 102. When the sleeve 102 reaches the predetermined height required by the user, the user rotates the clamping member 201 to realign the first clamping rod 202 and allow it to enter the limit portion 1012. At this time, the sleeve 102 is locked at the current height and cannot slide freely. Through the above steps, the operation is simple and the height can be adjusted continuously and smoothly.

[0069] The top of the limiting portion 1012 is an upwardly inclined portion; wherein the first clamping rod 202 is adapted to be in sliding contact with the inclined portion.

[0070] The top of the limiting portion 1012 is an upward arc portion; wherein the first clamping rod 202 is suitable for sliding contact with the arc portion.

[0071] In this embodiment, when the sleeve 102 moves upward relative to the support tube 101, it drives the clamping piece 201 upward, and the clamping piece 201 drives the first clamping rod 202 upward. The first clamping rod 202 will contact the inclined portion or the arc portion at the top of the limiting portion 1012. Due to the design of the inclined portion or the arc portion, the first clamping rod 202 will naturally slide along the inclined portion or the arc portion toward the straight portion 1011, thereby realizing automatic unlocking. The user does not need to perform additional unlocking operations, which simplifies the adjustment process. At the same time, the inclined portion or the arc portion also guides the moving trajectory of the first clamping rod 202, ensuring the smooth progress of the unlocking action.

[0072] The top of the sleeve 102 is provided with a rotating base 3; the locking assembly 2 also includes: a button 203 penetrating the top of the side of the sleeve 102, and a spring 204 arranged between the clamping member 201 and the rotating base 3; wherein the button 203 is connected to the clamping member 201; and the button 203 is adapted to be retracted into the sleeve 102 when pressed, and push the clamping member 201 to rotate around the sleeve 102 to compress the spring 204, and drive the first clamping rod 202 to withdraw from the limiting portion 1012 to the straight-through portion 1011; the The spring 204 is suitable for driving the clamping member 201 and the button 203 to reset when the deformation rebounds, so that the first clamping rod 202 re-enters the limiting portion 1012; by setting the button 203, the user can directly control the rotation of the clamping member 201 by pressing the button 203 without directly operating the clamping member 201 itself; by setting the spring 204, the clamping member 201 drives the first clamping rod 202 to enter the limiting portion 1012, thereby achieving the effect of automatically locking the height of the sleeve 102.

[0073] In this embodiment, the clamping member 201 is pushed to rotate by pressing the button 203, and the first clamping rod 202 is driven to withdraw from the limiting portion 1012 to the straight-through portion 1011. The sleeve 102 can slide freely relative to the support tube 101 to adjust the height of the armrest. When the sleeve 102 reaches a predetermined height, the button 203 is released, and the spring 204 rebounds and drives the clamping member 201 and the button 203 to reset. At the same time, the first clamping rod 202 re-enters the limiting portion 1012 to lock the sleeve 102 at the current height. Through the above steps, the operating process of height adjustment is simplified, and the accuracy and stability of adjustment are improved.

[0074] A support portion 2011 is provided on one side of the clamping member 201; a positioning hole 20111 is provided on the top of the support portion 2011; and one end of the spring 204 is arranged in the positioning hole 20111; two clamping protrusions 2012 are provided on the other side of the clamping member 201; a clamping portion 20121 is formed between the two clamping protrusions 2012; limiting protrusions 2031 are provided on both sides of the button 203; a positioning portion 2032 is provided at the tail end of the button 203; one end of the two limiting protrusions 2031 contacts the inner wall of the sleeve 102; and the positioning portion 2032 is located in the clamping portion 20121; wherein by setting the support portion 2011 and the support portion 2011 The positioning hole 20111 ensures that the spring 204 can stably act on the clamping member 201 to achieve its resetting function; wherein two clamping protrusions 2012 are provided on the other side of the clamping member 201, and a clamping portion 20121 is formed between the two protrusions to cooperate with the positioning portion 2032 of the button 203, so that the button 203 can stably push the clamping member 201 to rotate when pressed, and can be reset by the spring 204 when released; wherein limiting protrusions 2031 are provided on both sides of the button 203, and one end of the limiting protrusion 2031 contacts the inner wall of the sleeve 102, thereby limiting the movement range of the button 203 in the sleeve 102 to prevent it from excessive movement or falling off.

[0075] The locking assembly 2 also includes: a second clamping rod 205; two first placement portions 1021 are provided at the top of the sleeve 102; two second placement portions 301 are provided at the bottom of the rotating base 3; wherein when the rotating base 3 is suitable for being installed on the sleeve 102, the two first placement portions 1021 and the two second placement portions 301 cooperate to form two rotation spaces; and the two ends of the second clamping rod 205 are located in the rotation space; a positioning protrusion 302 and a support block 303 are provided at the bottom of the rotating base 3; wherein the other end of the spring 204 is sleeved on the positioning protrusion 302; and the support block 303 contacts the top of the support tube 101; wherein the positioning protrusion 302 is provided at the bottom of the rotating base 3 to fix the other end of the spring 204, thereby ensuring that the spring 204 can be stably installed in the locking assembly 2 and providing a reliable support point for its reset function.

[0076] Wear-resistant sheets 4 are provided on both sides of the support tube 101; wherein the sleeve 102 is sleeved on the outside of the support tube 101 and the wear-resistant sheet 4 and is slidably connected to the wear-resistant sheet 4; by providing the wear-resistant sheet 4, the friction and wear of the sleeve 102 is reduced and the sliding is smooth. Example 2

[0077] like Figure 5 , Figure 6 As shown, this embodiment also provides a chair armrest, including:

[0078] The armrest body 5 comprises: the seat armrest height adjustment mechanism.

[0079] The armrest body 5 further comprises: a connecting arm 501 connected to the supporting tube 101 , a rotating arm 502 rotatably connected to the rotating base 3 , an armrest seat 503 hinged to the rotating arm 502 , and an armrest plate 504 clamped to the armrest seat 503 . Example 3

[0080] This embodiment also provides a seat, including:

[0081] A seat frame and the seat armrests arranged on both sides of the seat frame; wherein the seat armrests are suitable for being fixed to the seat frame through connecting arms 501.

[0082] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0083] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0085] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A seat armrest height adjustment mechanism, characterized in that: include: A telescopic assembly (1) comprises: a support tube (101) and a sleeve (102) sleeved on the support tube (101) and slidably connected to the support tube (101); wherein A straight-through portion (1011) and a plurality of position-limiting portions (1012) in communication with the straight-through portion (1011) are symmetrically arranged on both sides of the support tube (101); A locking assembly (2) comprises: a clamping member (201) rotatably connected to a sleeve (102) and a first clamping rod (202) penetrating the bottom of the clamping member (201); wherein The clamping member (201) is located inside the support tube (101); and The first clamping rod (202) is located in two limiting portions (1012) at the same height; When the support tube (101) moves upward along the sleeve (102), the first clamping rod (202) withdraws from the limiting portion (1012) to the straight-through portion (1011), and the first clamping rod (202) drives the clamping member (201) to rotate in the sleeve (102); When the sleeve (102) reaches a predetermined height, the clamping member (201) is rotated to allow the first clamping rod (202) to re-enter the limiting portion (1012) to limit the downward movement of the sleeve (102).

2. The seat armrest height adjustment mechanism according to claim 1, characterized in that: The top of the limiting portion (1012) is an upwardly inclined portion; wherein The first clamping rod (202) is suitable for sliding contact with the inclined portion.

3. The seat armrest height adjustment mechanism according to claim 1, characterized in that: The top of the limiting portion (1012) is an upward arc; wherein The first clamping rod (202) is suitable for sliding contact with the arc portion.

4. The seat armrest height adjustment mechanism according to claim 3, characterized in that: A rotating base (3) is provided on the top of the sleeve (102); The locking assembly (2) further comprises: a button (203) penetrating the top of the side of the sleeve (102), and a spring (204) arranged between the clamping member (201) and the rotating base (3); wherein The button (203) is connected to the clamping member (201); and The button (203) is adapted to be retracted into the sleeve (102) when pressed, and to push the clamping member (201) to rotate the compression spring (204) around the sleeve (102), and to drive the first clamping rod (202) to withdraw from the limiting portion (1012) into the straight-through portion (1011); The spring (204) is suitable for driving the clamping member (201) and the button (203) to reset when deforming and rebounding, so that the first clamping rod (202) re-enters the limiting portion (1012).

5. The seat armrest height adjustment mechanism according to claim 4, characterized in that: A support portion (2011) is provided on one side of the clamping member (201); wherein The top of the support portion (2011) is provided with a positioning hole (20111); and One end of the spring (204) is disposed in the positioning hole (20111); The other side of the clamping piece (201) is provided with two clamping protrusions (2012); wherein A clamping portion (20121) is formed between the two clamping protrusions (2012); Limiting protrusions (2031) are provided on both sides of the button (203); A positioning portion (2032) is provided at the rear end of the button (203); One end of the two limiting protrusions (2031) contacts the inner wall of the sleeve (102); and The positioning portion (2032) is located inside the clamping portion (20121).

6. The seat armrest height adjustment mechanism according to claim 5, characterized in that: The locking assembly (2) further comprises: a second locking rod (205); Two first placement portions (1021) are provided on the top of the sleeve (102); The bottom of the rotating base (3) is provided with two second placement portions (301); wherein When the rotating base (3) is suitable for being installed on the sleeve (102), the two first placement parts (1021) and the two second placement parts (301) cooperate to form two rotation spaces; and Both ends of the second clamping rod (205) are located in the rotation space; The bottom of the rotating base (3) is provided with a positioning protrusion (302) and a supporting block (303); wherein The other end of the spring (204) is sleeved on the positioning protrusion (302); and The support block (303) is in contact with the top of the support tube (101).

7. The seat armrest height adjustment mechanism according to claim 6, characterized in that: Wear-resistant sheets (4) are provided on both sides of the support tube (101); The sleeve (102) is sleeved on the outside of the support tube (101) and the wear-resistant sheet (4) and is slidably connected to the wear-resistant sheet (4).

8. A chair armrest, characterized in that: include: An armrest body (5), comprising: a chair armrest height adjustment mechanism according to any one of claims 1 to 7.

9. The chair armrest according to claim 8, characterized in that: The armrest body (5) further comprises: a connecting arm (501) connected to the support tube (101), a rotating arm (502) rotatably connected to the rotating base (3), an armrest seat (503) hinged to the rotating arm (502), and an armrest plate (504) clamped to the armrest seat (503).

10. A seat, characterized in that: include: A seat frame and a seat armrest as claimed in any one of claims 8 or 9 arranged on both sides of the seat frame; wherein The seat armrest is suitable for being fixed on the seat frame via a connecting arm (501).

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