Rotating part and chair leg for swivel chair

Abstract

The utility model discloses a rotating part and a chair leg for a swivel chair, and relates to the technical field of swivel chair parts, the rotating part comprises a mounting cylinder, the inner wall of the mounting cylinder is coated with a lubricating substance, a rotating shaft is inserted in the mounting cylinder, the center of the bottom of the mounting cylinder is provided with a through hole, a rotating column is fixed at the center of the bottom of the rotating shaft, and the rotating column is provided with a through hole. The rotating shaft is provided with a rotating column, the rotating column is inserted into a through hole formed in the bottom of the mounting cylinder, and the rotating column is provided with an anti-falling part for limiting the rotating shaft to axially move relative to the mounting cylinder. The rotating shaft can flexibly rotate in the lubricating substance smeared in the mounting cylinder, meanwhile, the anti-disengaging part can prevent the rotating shaft from being disengaged from the mounting cylinder, and compared with a traditional mode that the rotating shaft is fixed to the inner ring of the bearing, the production cost is greatly saved, and meanwhile assembling is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of swivel chair components, in particular to a rotating component and a chair foot for a swivel chair. Background Art

[0002] Swivel chairs are commonly found in offices and homes. The rotating parts of existing swivel chairs are mainly fixed by bearings. The rotating shaft is fixed in the bearings, and the inner ring of the bearing is driven to rotate by the rotation of the rotating shaft, thereby realizing the rotation of the rotating shaft relative to the chair legs. The existing technical parts have high production costs and are difficult and cumbersome to assemble.

[0003] The existing patent (publication number: CN205696706U) proposes a rotational reset mechanism for a swivel chair, including a seat, a bearing shaft and a chair foot. The lower end of the bearing shaft is fixed to the chair foot, and a rotational reset block, a compression spring and a limit piece are installed on the bearing shaft. The rotational reset block that can rotate around the bearing shaft is movably sleeved on the bearing shaft, and the limit piece is fixed on the bearing shaft.

[0004] The above-mentioned swivel chair adopts a technical solution to solve the rotational reset by fixing the bearing on the chair leg, a rotational reset block is installed on the bearing, and the limit piece is fixed on the bearing shaft. The problem with this solution is that the swivel chair also adopts bearings for fixing, the production cost is relatively high, and the assembly is difficult and cumbersome. Therefore, we propose a rotating part for a swivel chair to solve the above problem. Utility Model Content

[0005] The utility model provides a rotating component for a swivel chair, which solves the technical problems of high production and assembly cost and difficult assembly of the current swivel chair.

[0006] In order to solve the above technical problems, the utility model provides a rotating component for a swivel chair, including a mounting tube, the rotating component for a swivel chair also includes a rotating shaft with a lower end inserted into the mounting tube, a lubricating material layer is provided between the mounting tube and the rotating shaft, a limiting portion with a through hole is provided in the mounting tube, a rotating column is fixed at the bottom center of the rotating shaft, and the rotating column is inserted in the through hole; in the axial direction of the mounting tube, an anti-slip component is provided on the rotating column for limiting the axial movement of the rotating shaft relative to the limiting portion.

[0007] Preferably, the outer diameter of the rotating column is smaller than the outer diameter of the rotating shaft and the lower end surface of the rotating shaft is located above the limiting portion, and the anti-slip component includes a clamping piece arranged at the bottom end of the rotating column and located below the limiting portion.

[0008] The above technical solution is adopted: the outer diameter of the rotating column is smaller than the outer diameter of the rotating shaft and the lower end surface of the rotating shaft is located above the limiting portion, the anti-slip component includes a clamping piece arranged at the bottom end of the rotating column and located below the limiting portion, and the lower end surface of the rotating shaft and the clamping piece form axial anti-slipping for the rotating column.

[0009] Preferably, the anti-slip component also includes a first gasket, a buffer member and a second gasket which are sleeved on the rotating column and arranged in sequence from top to bottom, the first gasket and the buffer member are located between the limiting portion and the lower end surface of the rotating shaft, and the second gasket is located between the lower end surface of the limiting portion and the clamping member.

[0010] The above technical solution is adopted: the anti-slip component also includes a first gasket, a buffer member and a second gasket which are sleeved on the rotating column and arranged in sequence from top to bottom. The first gasket and the buffer member are located between the limiting part and the lower end surface of the rotating shaft, the second gasket is located between the lower end surface of the limiting part and the clamping member, and the limiting part and the mounting tube are welded and connected, so that the rotating shaft will not fall off the mounting seat.

[0011] Preferably, the limiting portion is annular.

[0012] By adopting the above technical solution, the limiting portion is annular, so that the rotating shaft and the rotating column can be easily inserted into the installation tube.

[0013] Preferably, a slot is provided at the bottom end of the rotating column, and the clamping piece is clamped on the slot.

[0014] The above technical solution is adopted: a clamping groove is opened at the bottom end of the rotating column, a clamping piece is clamped on the clamping groove, and the rotating column is clamped by the clamping piece to prevent the rotating shaft from being separated from the mounting tube.

[0015] Preferably, the portion of the rotating shaft extending beyond the upper end of the mounting tube is in a conical column shape.

[0016] By adopting the above technical solution, the portion extending beyond the upper end of the installation tube through the rotating shaft is in a cone-shaped column, which is convenient for installation.

[0017] Preferably, a mounting sleeve is also installed in the mounting cylinder, and the lower end of the rotating shaft is inserted into the mounting sleeve.

[0018] By adopting the above technical solution, a mounting sleeve is also installed in the mounting tube, and the lower end of the rotating shaft is inserted into the mounting sleeve, so that the rotating shaft can be easily inserted and assembled.

[0019] Preferably, the outer wall of the mounting sleeve is provided with a plurality of reinforcing ribs which are interference-fitted with the inner wall of the mounting tube.

[0020] The above technical solution is adopted: a plurality of reinforcing ribs are arranged on the outer wall of the mounting sleeve to interfere with the inner wall of the mounting tube. The arrangement of the reinforcing ribs can reduce the contact surface between the mounting sleeve and the mounting tube to improve the interference assembly efficiency.

[0021] Preferably, a convex limit shoulder is provided on the top of the mounting sleeve, an inclined surface is provided on the convex limit shoulder, the axial length of the mounting sleeve is shorter than the axial length of the mounting tube, and a gap is reserved between the lower end of the mounting sleeve and the upper surface of the limiting portion, and the top end of the mounting tube abuts against the lower surface of the convex limit shoulder.

[0022] The above technical solution is adopted: an external convex limiting shoulder is provided on the top of the mounting sleeve, the axial length of the mounting sleeve is shorter than the axial length of the mounting tube, and a gap is reserved between the lower end of the mounting sleeve and the upper surface of the limiting portion, the top end of the mounting tube abuts against the lower surface of the external convex limiting shoulder, the axial length of the mounting sleeve is shorter than the axial length of the mounting tube, so that the external convex limiting shoulder plays a limiting role, and a gap is reserved between the lower end of the mounting sleeve and the upper surface of the limiting portion, so that the mounting sleeve and the mounting tube can be assembled into place in the axial direction.

[0023] Compared with the related art, the utility model has the following beneficial effects:

[0024] 1. Compared with the traditional rotating parts, the utility model is provided with a mounting cylinder, and the rotating part for a swivel chair also includes a rotating shaft with a lower end inserted into the mounting cylinder, a lubricating material layer is provided between the mounting cylinder and the rotating shaft, a limiting part with a through hole is provided in the mounting cylinder, a rotating column is fixed at the bottom center of the rotating shaft, and the rotating column is inserted in the through hole; in the axial direction of the mounting cylinder, an anti-slipping part is provided on the rotating column for limiting the axial movement of the rotating shaft relative to the limiting part, so that when the rotating shaft of the rotating part for the swivel chair rotates, the rotating shaft can flexibly rotate in the lubricating material applied in the mounting cylinder, and at the same time, the anti-slipping part can also limit the rotating shaft from leaving the mounting cylinder. Compared with the traditional method of fixing the rotating shaft to the inner ring of the bearing, the new type greatly saves production costs and is more convenient and quick to assemble.

[0025] 2. In the utility model, the outer wall of the mounting sleeve is provided with a plurality of reinforcing ribs which interfere with the inner wall of the mounting tube through interference fit. The provision of the reinforcing ribs can reduce the contact surface between the mounting sleeve and the mounting tube to improve the interference assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a rotating component for a swivel chair;

[0027] Figure 2 It is a bottom view of the structure of a rotating component for a swivel chair;

[0028] Figure 3 The present invention is a cross-sectional view of a rotating component for a swivel chair;

[0029] Figure 4 It is a schematic diagram of an anti-slip assembly and a rotating shaft structure in a rotating part of a swivel chair;

[0030] Figure 5The present invention is a structural diagram of a rotating component mounting cylinder and a mounting sleeve for a swivel chair.

[0031] Numbers in the figure: 1. Mounting cylinder; 2. Rotating shaft; 3. Mounting sleeve; 31. Inclined surface; 32. Reinforcing rib; 33. Outer convex limiting shoulder; 4. Rotating column; 41. Slot; 5. First gasket; 6. Buffer; 7. Second gasket; 8. Clamping member; 9. Anti-slip component; 10. Limiting portion; 11. Through hole. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Embodiment 1

[0033] like Figure 1-Figure 5 As shown, a rotating component for a swivel chair includes a mounting tube 1, and the rotating component for a swivel chair also includes a rotating shaft 2 whose lower end is inserted into the mounting tube 1, a lubricating material layer is provided between the mounting tube 1 and the rotating shaft 2, a limiting portion 10 with a through hole 11 is provided in the mounting tube 1, a rotating column 4 is fixed at the bottom center of the rotating shaft 2, and the rotating column 4 is inserted into the through hole 11; in the axial direction of the mounting tube 1, an anti-slip component 9 is provided on the rotating column 4 to limit the axial movement of the rotating shaft 2 relative to the limiting portion 10;

[0034] The rotating component for the swivel chair also includes a rotating shaft 2, the lower end of which is inserted into the mounting tube 1, a lubricating material layer is provided between the mounting tube 1 and the rotating shaft 2, a limiting portion 10 with a through hole 11 is provided in the mounting tube 1, a rotating column 4 is fixed at the bottom center of the rotating shaft 2, and the rotating column 4 is inserted in the through hole 11; in the axial direction of the mounting tube 1, an anti-slip component 9 is provided on the rotating column 4 for limiting the axial movement of the rotating shaft 2 relative to the limiting portion 10. When the rotating shaft 2 rotates, the rotating shaft 2 can flexibly rotate with the lubricating material applied in the mounting tube 1. At the same time, the anti-slip component 9 can also limit the rotating shaft 2 from detaching from the mounting tube 1. Compared with the traditional method of fixing the rotating shaft 2 on the inner ring of the bearing, this new type greatly saves production costs and is also more convenient and quick to assemble. Embodiment 2

[0035] like Figure 1-Figure 5As shown, the outer diameter of the rotating column 4 is smaller than the outer diameter of the rotating shaft 2 and the lower end surface of the rotating shaft 2 is located above the limiting portion 10, the anti-slip component 9 includes a clamping member 8 arranged at the bottom end of the rotating column 4 and located below the limiting portion 10, the anti-slip component 9 also includes a first gasket 5, a buffer member 6 and a second gasket 7 which are sleeved on the rotating column 4 and arranged in sequence from top to bottom, the first gasket 5 and the buffer member 6 are located between the limiting portion 10 and the lower end surface of the rotating shaft 2, the second gasket 7 is located between the lower end surface of the limiting portion 10 and the clamping member 8, the limiting portion 10 is annular, a clamping groove 41 is opened at the bottom end of the rotating column 4, the clamping member 8 is clamped on the clamping groove 41, the portion of the rotating shaft 2 extending beyond the upper end of the mounting tube 1 is in the shape of a cone, and the A mounting sleeve 3 is also installed in the mounting tube 1, and the lower end of the rotating shaft 2 is inserted into the mounting sleeve 3. The outer wall of the mounting sleeve 3 is provided with a plurality of reinforcing ribs 32 that interfere with the inner wall of the mounting tube 1 through interference fit. The top of the mounting sleeve 3 is provided with an outer convex limiting shoulder 33, and an inclined surface 31 is provided on the outer convex limiting shoulder 33. The axial length of the mounting sleeve 3 is shorter than the axial length of the mounting tube 1, and a gap is reserved between the lower end of the mounting sleeve 3 and the upper surface of the limiting portion 10. The top end of the mounting tube 1 abuts against the lower surface of the outer convex limiting shoulder 33, and the axial length of the mounting sleeve 3 is shorter than the axial length of the mounting tube 1, so that the outer convex limiting shoulder 33 plays a limiting role, and a gap is reserved between the lower end of the mounting sleeve 3 and the upper surface of the limiting portion 10, so that the mounting sleeve 3 and the mounting tube 1 can be assembled in place in the axial direction;

[0036] The outer wall of the mounting sleeve 3 is provided with a plurality of reinforcing ribs 32 which interfere with the inner wall of the mounting tube 1 by interference fit. The provision of the reinforcing ribs 32 can reduce the contact surface between the mounting sleeve 3 and the mounting tube 1, so as to improve the interference assembly efficiency;

[0037] The outer diameter of the rotating column 4 is smaller than the outer diameter of the rotating shaft 2 and the lower end surface of the rotating shaft 2 is located above the limiting portion 10. The anti-slip component 9 includes a clamping piece 8 arranged at the bottom end of the rotating column 4 and located below the limiting portion 10. The lower end surface of the rotating shaft 2 and the clamping piece 8 form an axial anti-slipping feature for the rotating column 4.

[0038] Working principle: Figure 1-5 As shown, the seat surface is installed on the rotating shaft 2 relative to the protruding part of the mounting tube 1. When the seat surface rotates to drive the rotating shaft 2 to rotate, the rotating shaft 2 contacts the lubricating material coated in the mounting tube 1, so that the mounting tube 1 can rotate more flexibly. At the same time, the second gasket 7 fixed at the bottom of the rotating shaft 2 is inserted into the through hole 11 opened in the limiting part 10 at the bottom of the mounting tube 1. The rotating column 4 is provided with an anti-dropping component 9 for limiting the axial movement of the rotating shaft 2 relative to the mounting tube 1, so that the rotating shaft 2 will not fall off relative to the mounting tube 1. The structure is simple, practical, and cost-effective.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotating component for a swivel chair, comprising a mounting cylinder (1), characterized in that: The rotating component for a swivel chair also includes a rotating shaft (2) whose lower end is inserted into the mounting tube (1), a lubricating material layer is provided between the mounting tube (1) and the rotating shaft (2), a limiting portion (10) having a through hole (11) is provided in the mounting tube (1), a rotating column (4) is fixed at the bottom center of the rotating shaft (2), and the rotating column (4) is inserted into the through hole (11); in the axial direction of the mounting tube (1), an anti-slip component (9) is provided on the rotating column (4) for limiting the axial movement of the rotating shaft (2) relative to the limiting portion (10).

2. The rotating component for a swivel chair according to claim 1, characterized in that: The outer diameter of the rotating column (4) is smaller than the outer diameter of the rotating shaft (2) and the lower end surface of the rotating shaft (2) is located above the limiting portion (10). The anti-slip component (9) includes a clamping member (8) arranged at the bottom end of the rotating column (4) and located below the limiting portion (10).

3. The rotating component for a swivel chair according to claim 2, characterized in that: The anti-slip component (9) also includes a first gasket (5), a buffer member (6) and a second gasket (7) which are sleeved on the rotating column (4) and arranged in sequence from top to bottom, wherein the first gasket (5) and the buffer member (6) are located between the limiting portion (10) and the lower end surface of the rotating shaft (2), and the second gasket (7) is located between the lower end surface of the limiting portion (10) and the clamping member (8).

4. The rotating component for a swivel chair according to claim 3, characterized in that: The limiting portion (10) is ring-shaped.

5. The rotating component for a swivel chair according to claim 2, characterized in that: A clamping groove (41) is provided at the bottom end of the rotating column (4), and the clamping member (8) is clamped on the clamping groove (41).

6. The rotating component for a swivel chair according to claim 1, characterized in that: The portion of the rotating shaft (2) extending beyond the upper end of the mounting tube (1) is in the shape of a cone column.

7. The rotating component for a swivel chair according to claim 1, characterized in that: A mounting sleeve (3) is also installed in the mounting cylinder (1), and the lower end of the rotating shaft (2) is inserted into the mounting sleeve (3).

8. The rotating component for a swivel chair according to claim 7, characterized in that: The outer wall of the installation sleeve (3) is provided with a plurality of reinforcing ribs (32) which are interference-fitted with the inner wall of the installation tube (1).

9. The rotating component for a swivel chair according to claim 7, characterized in that: The top of the mounting sleeve (3) is provided with an outwardly convex limiting shoulder (33), and an inclined surface (31) is provided on the outwardly convex limiting shoulder (33). The axial length of the mounting sleeve (3) is shorter than the axial length of the mounting tube (1), and a gap is reserved between the lower end of the mounting sleeve (3) and the upper surface of the limiting portion (10), and the top end of the mounting tube (1) abuts against the lower surface of the outwardly convex limiting shoulder (33).

10. Chair legs, characterized in that: The chair legs include a rotating component for a swivel chair as described in any one of claims 1-9.

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