Adjustable seat armrest

Abstract

The utility model provides an adjustable seat armrest, which is used for solving the technical problem that the use feeling of a user is reduced due to the fact that part of the existing armrests cannot be adjusted according to different sitting postures of the user. The utility model discloses an adjustable seat armrest which comprises an armrest body, one end of the armrest body is provided with a first placing plate used for placing the forearm of a user, one end of the first placing plate is adjustably and slidably provided with a second placing plate in the length direction of the first placing plate, and when the second placing plate completely moves into the first placing plate, the forearm of the user can be placed on the second placing plate. The second placing plate is fixedly arranged in the first placing plate, and the first placing plate can be better attached to the arm of the user through mutual cooperation of the first placing plate and the second placing plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially relates to an adjustable chair handrail. BACKGROUND

[0002] The chair is a kind of seat with backrest, some also have armrest. Ancient people sat on the ground, originally there was no chair, "chair" is the name of wood.

[0003] The utility model discloses a chair armrest, including frame main part and with frame main part embedded fixed PU armrest, frame main part top is equipped with embedded slot, embedded slot detachably fixed with screw, screw is equipped with conical spring piece, PU armrest bottom surface is equipped with embedded hole for conical spring piece tight carding.

[0004] In the above-mentioned utility model patent, PU armrest is fixedly arranged on the frame main body, when the sitting posture of the user changes, the PU armrest cannot be adjusted according to the sitting posture of the user, and the user's arm is always supported, so that the use experience of the user is reduced. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a kind of adjustable chair handrail, to solve the technical problems that part of handrail in prior art cannot be adjusted according to the different sitting posture of user, leading to the use experience of user reduces.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] A kind of adjustable chair handrail, including: armrest body, the first placement plate for the first arm of user is placed and is installed in the armrest body one end, the second placement plate is adjustably slid along the first placement plate length direction and is arranged in the first placement plate one end, when the second placement plate is completely moved to the first placement plate, the second placement plate is fixedly arranged in the first placement plate, the first placement plate one end is equipped with placement cavity, the second placement plate is slidably arranged in the placement cavity, the placement cavity both sides inner wall is equipped with a row of first protrusion, the second placement plate both sides end surface is fixedly provided with second protrusion, the second protrusion is clamped between any two first protrusions, the armrest body includes the connecting shaft rotationally arranged at the bottom of the first placement plate, the first connecting pipe is fixedly arranged at the bottom of the connecting shaft, the second connecting pipe is adjustably and peripherally arranged on the first connecting pipe.

[0008] Working principle:

[0009] According to the use requirement of the user, when the position of the second placing plate needs to be adjusted, the second placing plate can be moved relative to the first placing plate first, and then the second placing plate is moved to the required position.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] According to the use requirement of the user, when the position of the second placing plate needs to be adjusted, the second placing plate can be moved relative to the first placing plate first, and then the second placing plate is moved to the required position, according to the requirement of the user, the position of the second placing plate is moved, so that the second placing plate can always provide support for the arm of the user. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a cross-section structure schematic view of the embodiment of the utility model;

[0013] Figure 2 It is Figure 1 It is an enlarged schematic view of A in the figure;

[0014] Figure 3 It is a cross-section structure schematic view of the second placing plate of the embodiment of the utility model;

[0015] Figure 4 It is a structure schematic view of the second placing plate of the embodiment of the utility model from another perspective;

[0016] Figure 5 It is a structure schematic view of the force plate of the embodiment of the utility model;

[0017] Figure 6 It is a cross-section structure schematic view of the first connecting pipe and the second connecting pipe of the embodiment of the utility model.

[0018] In the above drawings: 10, first placing plate; 11, second placing plate; 12, placing cavity; 13, force plate; 14, connecting shaft; 15, first connecting pipe; 17, second connecting pipe; 18, third force rod; 19, mounting hole; 20, push plate; 21, limiting cavity; 22, push block; 23, first elastic piece; 24, push rod; 27, sliding block; 29, sliding groove; 30, first blocking plate; 31, first protrusion; 32, second protrusion; 33, second blocking plate; 34, working cavity; 35, second blocking block; 36, first force rod; 37, torsional spring; 38, second force rod; 39, connecting column; 40, first blocking block; 41, limiting rod; 42, second elastic piece; 43, second limiting hole; 44, first limiting hole. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model will be further explained below in combination with the drawings and embodiments.

[0020] Embodiment:

[0021] As shown in Figure 1 , an adjustable seat armrest, comprising: an armrest body, one end of the armrest body is provided with a first placing plate 10 for placing the user's forearm, one end of the first placing plate 10 is slidably provided with a second placing plate 11 along the length direction of the first placing plate 10, one end of the first placing plate 10 is provided with a placing cavity 12, and the second placing plate 11 is slidably arranged in the placing cavity 12. The inner wall of both sides of the placing cavity 12 is provided with a row of first protrusions 31, and the end face of both sides of the second placing plate 11 is fixedly provided with a second protrusion 32, the second protrusion 32 has elasticity, the second protrusion 32 can be elastically deformed, the second protrusion 32 is clamped between any two first protrusions 31, and the shapes of the first protrusions 31 and the second protrusions 32 can be hemispherical or wavy, preferably, as shown in Figure 4 , the shapes of the first protrusions 31 and the second protrusions 32 are hemispherical, and when the second placing plate 11 is completely moved into the first placing plate 10, the second placing plate 11 is fixedly arranged in the first placing plate 10. As shown in Figure 5 , the inner wall of one side of the placing cavity 12 is provided with a working cavity 34, one end of the second placing plate 11 close to the working cavity 34 is fixedly provided with a stress plate 13, both ends of the stress plate 13 extending into the working cavity 34 are fixedly provided with first clamping assemblies, and two second clamping assemblies are arranged in the working cavity 34, the first clamping assemblies and the second clamping assemblies cooperate to fix the second placing plate 11;

[0022] According to the use requirements of the user, when the position of the second placing plate 11 needs to be adjusted, the second placing plate 11 is first moved relative to the first placing plate 10, and then the second placing plate 11 is moved to the required position, and the position of the second placing plate 11 is moved according to the requirements of the user, so that the second placing plate 11 can always provide support for the arm of the user.

[0023] As shown in Figure 3 and Figure 4 , the inner wall of both sides of the placing cavity 12 is fixedly provided with a first blocking plate 30, the first blocking plate 30 is arranged at the end of the corresponding row of first protrusions 31, and the end of the second placing plate 11 is fixedly provided with a second blocking plate 33, the second blocking plate 33 is arranged at one side corresponding to the second protrusion 32, the first blocking plate 30 cooperates with the second blocking plate 33 to limit the sliding distance of the second placing plate 11, the inner wall of both sides of the placing cavity 12 is provided with a sliding groove 29, and both ends of the second placing plate 11 are fixedly provided with sliding blocks 27 matched with the corresponding sliding grooves 29, the sliding blocks 27 and the sliding grooves 29 make the second placing plate 11 not easy to fall out of the placing cavity 12.

[0024] As shown in Figure 5As shown, the first clamping assembly includes a first blocking block 40, the second clamping assembly includes a connecting column 39 fixed in the working cavity 34, a first force rod 36 is rotatably arranged on the connecting column 39, a torsion spring 37 is arranged between the first force rod 36 and the connecting column 39, a second blocking block 35 is fixed at the end of the first force rod 36 and abuts against the first blocking block 40, a first inclined portion is arranged on the first blocking block 40, a second inclined portion is arranged on the second blocking block 35, the second inclined portion cooperates with the first inclined portion to re-cooperate the first blocking block 40 and the second blocking block 35, thereby limiting the movement of the stress plate 13, a second force rod 38 is fixed at the other end of the first force rod 36, the two second force rods 38 are pushed, the second force rods 38 drive the first force rod 36 to rotate around the connecting column 39, the first force rod 36 drives the second blocking block 35 to rotate, the second blocking block 35 is out of contact with the first blocking block 40, so that the stress plate 13 can move.

[0025] As shown in Figure 2 , the inner wall of the side of the working cavity 34 opposite to the placing cavity 12 is provided with a limiting cavity 21, a pushing rod 24 is slidably arranged in the limiting cavity 21, the end of the pushing rod 24 extends out of the first placing plate 10, a pushing block 22 is fixed on the part of the pushing rod 24 in the limiting cavity 21, the pushing block 22 is connected with a first elastic member 23 in the limiting cavity 21, the first elastic member 23 is a telescopic spring, a pushing plate 20 is fixed on the end of the pushing rod 24 extending into the working cavity 34, and the pushing plate 20 abuts against the two second force rods 38.

[0026] As shown in Figure 1 and Figure 6 , the handrail body includes a connecting shaft 14 rotatably arranged at the bottom end of the first placing plate 10, a first connecting pipe 15 is fixed at the bottom end of the connecting shaft 14, and a second connecting pipe 17 is adjustably sleeved on the outer periphery of the first connecting pipe 15. A row of second limiting holes 43 are formed through the second connecting pipe 17, a first limiting hole 44 is formed through the first connecting pipe 15, a limiting rod 41 is arranged in one of the second limiting holes 43 and the first limiting hole 44, a second elastic member 42 is connected between the limiting rod 41 and the inner wall of the first connecting pipe 15, and the second elastic member 42 is a stress spring. A third force rod 18 is fixed at one end of the second connecting pipe 17, and the third force rod 18 is provided with a mounting hole 19. The handrail body is mounted on the seat through the mounting hole 19.

[0027] Working principle:

[0028] When the second force plate 13 needs to be moved, the pushing rod 24 is first pushed to move, the pushing rod 24 drives the second force rod 38 to move through the pushing plate 20, the second force rod 38 drives the first force rod 36 to rotate around the connecting column 39, the first force rod 36 drives the second blocking block 35 to move, the second placing plate 11 is pulled to move, the second placing plate 11 drives the force plate 13 to move, the second placing plate 11 drives the second protrusion 32 to move, the second placing plate 11 drives the second blocking plate 33 to move, after the second blocking plate 33 abuts against the first blocking plate 31, the second placing plate 11 cannot continue to move;

[0029] The second placing plate 11 is pushed to move close to the working cavity 34, the second placing plate 11 drives the force plate 13 to move, the force plate 13 drives the first blocking block 40 to move, the first blocking block 40 is clamped with the second blocking block 35;

[0030] The limiting rod 41 is pressed, the first connecting pipe 15 and the second connecting pipe 17 are directly pulled, after being pulled, the limiting rod 41 passes through the first limiting hole 44 and one of the second limiting holes 43 under the action of the second elastic element 42.

[0031] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An adjustable seat arm characterized by, Include: The handrail body, one end of the handrail body is provided with a first placing plate (10) for placing the user's forearm, one end of the first placing plate (10) is adjustably and slidably provided with a second placing plate (11), when the second placing plate (11) is completely moved into the first placing plate (10), the second placing plate (11) is fixedly arranged in the first placing plate (10), one end of the first placing plate (10) is provided with a placing cavity (12), the second placing plate (11) is slidably arranged in the placing cavity (12), the inner wall of both sides of the placing cavity (12) is provided with a row of first protrusions (31), the end surface of both sides of the second placing plate (11) is fixedly provided with a second protrusion (32), the second protrusion (32) is clamped between any two first protrusions (31), the handrail body comprises a connecting shaft (14) rotatably arranged at the bottom end of the first placing plate (10), the bottom end of the connecting shaft (14) is fixedly provided with a first connecting pipe (15), the outer periphery of the first connecting pipe (15) is adjustably and slidably provided with a second connecting pipe (17).

2. An adjustable seat armrest according to claim 1, characterized in that: The inner wall of both sides of the placing cavity (12) is fixedly provided with a first blocking plate (30), the first blocking plate (30) is arranged at the end of the corresponding row of first protrusions (31), the both ends of the second placing plate (11) are fixedly provided with a second blocking plate (33), the second blocking plate (33) is arranged on one side corresponding to the second protrusion (32), the first blocking plate (30) and the second blocking plate (33) cooperate to limit the sliding distance of the second placing plate (11), the inner wall of both sides of the placing cavity (12) is provided with a sliding groove (29), the both ends of the second placing plate (11) are fixedly provided with a sliding block (27) matched with the corresponding sliding groove (29).

3. An adjustable seat armrest according to claim 1, wherein: The inner wall of one side of the placing cavity (12) is provided with a working cavity (34), one end of the second placing plate (11) close to the working cavity (34) is fixedly provided with a stress plate (13), the both ends of the stress plate (13) extending into the working cavity (34) are fixedly provided with a first clamping assembly, the working cavity (34) is provided with two second clamping assemblies, the first clamping assembly and the second clamping assembly cooperate to fix the second placing plate (11).

4. An adjustable seat armrest according to claim 3, wherein: The first clamping assembly comprises a first blocking block (40).

5. An adjustable seat armrest according to claim 4, wherein: The second clamping assembly comprises a connecting column (39) fixedly arranged in the working cavity (34), a first stress rod (36) is rotatably arranged on the connecting column (39), a torsional spring (37) is arranged between the first stress rod (36) and the connecting column (39), a second blocking block (35) is fixedly arranged at the end of the first stress rod (36) and abuts against the first blocking block (40), a second stress rod (38) is fixedly arranged at the other end of the first stress rod (36).

6. An adjustable seat armrest according to claim 5, wherein: The working cavity (34) is provided with a limiting cavity (21) on the inner wall of the side opposite to the placing cavity (12), a pushing rod (24) is slidably arranged in the limiting cavity (21), the end of the pushing rod (24) extends out of the first placing plate (10), a pushing block (22) is fixedly arranged on the section of the pushing rod (24) in the limiting cavity (21), the pushing block (22) is connected with the first elastic member (23) in the limiting cavity (21), the end of the pushing rod (24) extending into the working cavity (34) is fixedly provided with a pushing plate (20), and one end of the pushing plate (20) abuts against two second force rods (38).

7. An adjustable seat armrest according to claim 1, wherein: A row of second limiting holes (43) are formed through the second connecting pipe (17), first limiting holes (44) are formed through the first connecting pipe (15), a limiting rod (41) is arranged in one of the second limiting holes (43) and the first limiting hole (44), and the limiting rod (41) is connected with the second elastic member (42) between the inner wall of the first connecting pipe (15).

8. An adjustable seat armrest according to claim 1, wherein: The second connecting pipe (17) is fixedly provided with a third force rod (18), and the third force rod (18) is provided with a mounting hole (19).

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