Office chair with adjustable armrests

Abstract

The office chair comprises a mounting plate, mounting holes which are symmetrically distributed are formed in the mounting plate, a fixing cylinder is arranged at the top of the mounting plate, an adjusting column is arranged in the fixing cylinder, the upper end of the adjusting column penetrates through the top of the fixing cylinder and is in sliding connection with the fixing cylinder, a supporting plate is fixedly connected to the upper end of the adjusting column, and the supporting plate is fixedly connected to the upper end of the adjusting column. The interior of the adjusting column is hollow. The utility model belongs to the technical field of handrails of office supplies, and particularly relates to an office chair with adjustable handrails, which solves the problem that arms in different use states are inconvenient to support because the height and the front and back positions of the handrails are fixed when the handrails are used.

Description

TECHNICAL FIELD

[0001] The utility model belongs to office supplies handrail technical field especially, relate to an adjustable handrail office chair. BACKGROUND

[0002] Office chair refers to the daily work and social activities for the convenience of work and equipped with a variety of chairs, office chair is usually provided with two handrails, for the placement of arm, in the existing office chair handrail technology, there are the following problems:

[0003] The height and the front and back position of the handrail are fixed when using, cannot adapt to the demand of different users to the handrail, so that the arm cannot be well supported, reduce the comfort of the user sitting on the office chair. INVENTION CONTENTS

[0004] The utility model solves the technical problem that the height and the front and back position of the handrail are fixed when using, and the arm of different use states is inconvenient to support.

[0005] In order to solve the above technical problem, the technical scheme adopted by the utility model is as follows: a kind of adjustable handrail office chair, including mounting plate, the mounting plate is equipped with the mounting hole of symmetrical distribution, the top of the mounting plate is equipped with fixed cylinder, the inside of the fixed cylinder is equipped with adjusting column, and its upper end passes through the top of fixed cylinder and is slidably connected with it, the upper end of the adjusting column is fixedly connected with the handrail, the inside of the adjusting column is hollow, further including

[0006] Vertical adjustment assembly, be equipped with in the inside of fixed cylinder, including plug column, the plug column is horizontally through adjusting column and is slidably connected with it, and it is symmetrically distributed, the fixed cylinder is equipped with the positioning hole of uniform distribution, and it is adapted to plug column, horizontal spring is set on the plug column, and its both ends are fixedly connected adjusting column and plug column, the inside of the adjusting column is equipped with pull mechanism, for the horizontal position adjustment of plug column;

[0007] Horizontal adjustment assembly, be equipped with between fixed cylinder and mounting plate, including sliding block, the sliding block is horizontally through mounting plate and is slidably connected with it, the inside of the sliding block is hollow, the bottom of the sliding block is equipped with the positioning mechanism for the positioning of sliding block.

[0008] Further, the pull mechanism includes lifting rod, inner block and connecting rope, wherein:

[0009] The inner block is fixedly connected on the inner wall of adjusting column, the lifting rod is vertically through the inner block and is slidably connected with it, and its upper end is vertically through the top of adjusting column and handrail and is slidably connected with it, the connecting rope is fixedly connected between plug column and the bottom wall of lifting rod, the middle part diameter of the lifting rod is less than the upper end diameter thereof, upper spring is set on the lifting rod, and its both ends are fixedly connected inner block and lifting rod.

[0010] Further, the positioning mechanism comprises a bottom rod vertically penetrating through the bottom of the sliding block and being in sliding connection with the sliding block, a lower spring is sleeved on the bottom rod, and two ends of the bottom rod are fixedly connected with the inner bottom wall of the sliding block, and the mounting plate is provided with through holes in linear arrangement and matched with the bottom rod.

[0011] Further, the top wall of the supporting plate is fixedly connected with a rubber pad, and a center hole is arranged in the middle part of the rubber pad, and the upper end of the lifting rod is arranged in the center hole.

[0012] Further, the inner wall of the fixing cylinder is fixedly connected with limit grooves arranged in symmetry, and the outer wall of the adjusting column is fixedly connected with limit blocks arranged in symmetry, and one end of the limit blocks is arranged in the limit grooves in sliding mode.

[0013] Further, the bottom rod and the inserting column are both in soil type, and the adjusting column is in ⊥ type.

[0014] After the above structure is adopted, the beneficial effects of the present application are as follows:

[0015] (1) the upper end of the bottom rod is separated from the through hole by pulling down the bottom rod, and the bottom rod is inserted into the corresponding through hole again by using the lower spring, so that the position of the supporting plate can be adjusted and positioned according to the requirement;

[0016] (2) the height of the supporting plate can be adjusted by lifting the lifting rod in the center hole through the cooperation of various components, and the adjustment is very convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application.

[0018] Figure 1 a whole structure schematic view of the handrail adjustable office chair is provided for the present application;

[0019] Figure 2 a front view of the handrail adjustable office chair is provided for the present application;

[0020] Figure 3 a three-dimensional structure schematic view of the handrail adjustable office chair is provided for the present application;

[0021] Figure 4 a half-sectional view of the handrail adjustable office chair is provided for the present application;

[0022] Figure 5 another planar sectional view of the handrail adjustable office chair is provided for the present application.

[0023] In the drawings: 1, mounting plate, 2, mounting hole, 3, fixed cylinder, 4, adjusting column, 5, handrail, 6, plug column, 7, positioning hole, 8, horizontal spring, 9, sliding block, 10, lifting rod, 11, inner block, 12, connecting rope, 13, upper spring, 14, bottom rod, 15, lower spring, 16, through hole, 17, rubber pad, 18, center hole, 19, limiting groove, 20, limiting block. DETAILED DESCRIPTION

[0024] As Figures 1-2 shown, a handrail-adjustable office chair, comprising a mounting plate 1, the mounting plate 1 is provided with symmetrically distributed mounting holes 2, the top of the mounting plate 1 is provided with a fixed cylinder 3, the inside of the fixed cylinder 3 is provided with an adjusting column 4, and the upper end thereof penetrates through the top of the fixed cylinder 3 and is in sliding connection therewith, the inner wall of the fixed cylinder 3 is fixedly connected with symmetrically distributed limiting grooves 19, the outer wall of the adjusting column 4 is fixedly connected with symmetrically distributed limiting blocks 20, and one end thereof is slidingly arranged inside the limiting groove 19, the upper end of the adjusting column 4 is fixedly connected with a handrail 5, the inside of the adjusting column 4 is hollowly arranged, and the adjusting column 4 is in ⊥ type arrangement to avoid separation from the fixed cylinder 3, the top wall of the handrail 5 is fixedly connected with a rubber pad 17, and the middle part thereof is provided with a center hole 18, further comprising a vertical adjusting assembly and a horizontal adjusting assembly.

[0025] As Figures 1-5 shown, in order to facilitate the height adjustment of the handrail 5, the vertical adjusting assembly is arranged inside the fixed cylinder 3, comprising plug columns 6, the plug columns 6 horizontally penetrate through the adjusting column 4 and are in sliding connection therewith, and are symmetrically distributed, the fixed cylinder 3 is provided with uniformly distributed positioning holes 7, and is matched with the plug columns 6, the plug columns 6 are in ⊥ type arrangement to avoid separation from the adjusting column 4, the plug columns 6 are sleeved with horizontal springs 8, and the two ends thereof are fixedly connected with the adjusting column 4 and the plug columns 6, the inside of the adjusting column 4 is provided with a lifting mechanism for horizontal position adjustment of the plug columns 6, the lifting mechanism comprises a lifting rod 10, an inner block 11 and a connecting rope 12, the inner block 11 is fixedly connected to the inner wall of the adjusting column 4, the lifting rod 10 vertically penetrates through the inner block 11 and is in sliding connection therewith, and the upper end thereof vertically penetrates through the top of the adjusting column 4 and the handrail 5 and is in sliding connection therewith, the upper end of the lifting rod 10 is arranged inside the center hole 18, the connecting rope 12 is fixedly connected between the plug columns 6 and the bottom wall of the lifting rod 10, the middle part of the lifting rod 10 is smaller in diameter than the upper end thereof, the lifting rod 10 is sleeved with an upper spring 13, and the two ends thereof are fixedly connected with the inner block 11 and the lifting rod 10, the lifting of the lifting rod 10 can drive the connecting rope 12 to separate the plug columns 6 from the positioning holes 7, that is, the height adjustment can be performed, and then the positioning after the height adjustment can be completed through the action of the upper spring 13 and the horizontal spring 8.

[0026] As Figures 1-4As shown, in order to facilitate the adjustment of the front and back positions of the handrail 5, the transverse adjustment assembly is arranged between the fixing cylinder 3 and the mounting plate 1, which comprises a sliding block 9 horizontally penetrating through the mounting plate 1 and being in sliding connection with the mounting plate 1, the inside of the sliding block 9 is hollowly arranged, the bottom of the sliding block 9 is provided with a positioning mechanism for positioning the sliding block 9, the positioning mechanism comprises a bottom rod 14 vertically penetrating through the bottom of the sliding block 9 and being in sliding connection with the sliding block 9, the bottom rod 14 is in soil type arrangement to avoid being separated from the sliding block 9, a lower spring 15 is sleeved on the bottom rod 14, and both ends of the lower spring 15 are fixedly connected with the bottom rod 14 and the inner bottom wall of the sliding block 9, the mounting plate 1 is provided with through holes 16 arranged in a linear array and matched with the bottom rod 14, the upper end of the bottom rod 14 is separated from the through holes 16 by pulling down the bottom rod 14, and the bottom rod 14 is inserted into the corresponding through hole 16 again by the lower spring 15 after the sliding block 9 is slid to position the front and back positions of the handrail 5.

[0027] In specific use, the whole is connected with the office chair through the mounting hole 2 on the mounting plate 1, in the use process, if the front and back positions of the handrail 5 need to be adjusted, the upper end of the bottom rod 14 is separated from the through holes 16 by pulling down the bottom rod 14, and then the position of the handrail 5 is adjusted by sliding the sliding block 9, after the adjustment is completed, the bottom rod 14 is inserted into the corresponding through hole 16 under the action of the lower spring 15 to position the handrail 5 after the front and back sliding, a soft pad matched with the hole diameter can be arranged in the central hole 18, and the user will not feel uncomfortable in use, if the height of the handrail 5 needs to be adjusted, the lifting rod 10 is lifted upward, the connecting rope 12 pulls the two inserting columns 6 to move transversely to separate from the positioning holes 7, and then the height of the handrail 5 is adjusted by sliding, in the process, the adjusting column 4 drives the limiting block 20 to slide in the limiting groove 19 to avoid affecting the repositioning of the inserting column 6 after the handrail 5 rotates, the lifting rod 10 is lowered under the action of gravity and the upper spring 13 after the lifting rod 10 is loosened, and the inserting column 6 moves transversely under the action of the transverse spring 8 until being inserted into the corresponding positioning hole 7 to complete the height adjustment of the handrail 5.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents. In general, if those skilled in the art are inspired by the present application, without departing from the creative purpose of the present application, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the present application.

Claims

1. An adjustable armrest office chair, comprising a mounting plate (1), wherein the mounting plate (1) is provided with symmetrically distributed mounting holes (2), a fixing cylinder (3) is provided at the top of the mounting plate (1), an adjusting column (4) is provided inside the fixing cylinder (3), and its upper end passes through the top of the fixing cylinder (3) and is slidably connected thereto, an armrest (5) is fixedly connected to the upper end of the adjusting column (4), and the interior of the adjusting column (4) is hollow, characterized in that: Also includes The vertical adjustment assembly is arranged in the inside of the fixed cylinder (3), including the inserting column (6), the inserting column (6) is horizontally through the adjusting column (4) and is slidably connected with it, and it is symmetrically distributed, the fixed cylinder (3) is provided with uniformly distributed positioning holes (7), and it is matched with the inserting column (6), the inserting column (6) is provided with a horizontal spring (8), and the two ends are fixedly connected with the adjusting column (4) and the inserting column (6), the inside of the adjusting column (4) is provided with a lifting mechanism for adjusting the horizontal position of the inserting column (6); The horizontal adjustment assembly is arranged between the fixed cylinder (3) and the mounting plate (1), including the sliding block (9), the sliding block (9) is horizontally through the mounting plate (1) and is slidably connected with it, the inside of the sliding block (9) is provided with a hollow, and the bottom of the sliding block (9) is provided with a positioning mechanism for positioning the sliding block (9).

2. An adjustable office chair according to claim 1, characterized in that: The lifting mechanism includes a lifting rod (10), an inner block (11) and a connecting rope (12), wherein: The inner block (11) is fixedly connected to the inner wall of the adjusting column (4), the lifting rod (10) is vertically through the inner block (11) and is slidably connected with it, and the upper end is vertically through the top of the adjusting column (4) and the supporting plate (5) and is slidably connected with them, the connecting rope (12) is fixedly connected between the inserting column (6) and the bottom wall of the lifting rod (10), the middle part of the lifting rod (10) is smaller in diameter than the upper end, the lifting rod (10) is provided with an upper spring (13), and the two ends are fixedly connected with the inner block (11) and the lifting rod (10).

3. An adjustable office chair according to claim 1 or 2, characterized in that: The positioning mechanism includes a bottom rod (14), the bottom rod (14) is vertically through the bottom of the sliding block (9) and is slidably connected with it, the bottom rod (14) is provided with a lower spring (15), and the two ends are fixedly connected with the bottom rod (14) and the inner bottom wall of the sliding block (9), the mounting plate (1) is provided with linearly arranged through holes (16), and it is matched with the bottom rod (14).

4. An adjustable office chair having an armrest according to claim 2, characterized in that: The top wall of the supporting plate (5) is fixedly connected with a rubber pad (17), and a center hole (18) is arranged in the middle part, and the upper end of the lifting rod (10) is arranged in the inside of the center hole (18).

5. An adjustable office chair having an armrest as claimed in claim 1, characterized in that: The inner wall of the fixed cylinder (3) is fixedly connected with symmetrically distributed limiting grooves (19), the outer wall of the adjusting column (4) is fixedly connected with symmetrically distributed limiting blocks (20), and one end is slidably arranged in the inside of the limiting groove (19).

6. An adjustable office chair having an armrest according to claim 3, characterized in that: The bottom rod (14) and the inserting column (6) are both provided in a soil type, and the adjusting column (4) is provided in a ⊥ type.

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