CN204994991U - Center pin for chair - Google Patents
Center pin for chair Download PDFInfo
- Publication number
- CN204994991U CN204994991U CN201520530920.4U CN201520530920U CN204994991U CN 204994991 U CN204994991 U CN 204994991U CN 201520530920 U CN201520530920 U CN 201520530920U CN 204994991 U CN204994991 U CN 204994991U
- Authority
- CN
- China
- Prior art keywords
- axis
- outer tube
- lining
- chair
- central shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005096 rolling process Methods 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000008961 swelling Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
The utility model relates to a center pin for chair. Aim at provides a center pin for chair, can effectively restrict its turned angle, avoids the winding. The scheme: a center pin for chair, it includes outer tube, the coaxial bush of arranging in this outer tube, the coaxial axis that runs through this bush, axis one end overcoat bearing and coaxial passing behind the bush through the buckle locking in on the terminal surface of outer tube bottom, part that the axis is located the bush is provided with outstandingly in the surperficial bayonet lock of axis, the inboard processing of bush have at least two with the bayonet lock is corresponding in order to realize spacing the swelling of turned angle, and each spacing protruding bush axis that winds is evenly arranged. The utility model discloses mainly used furniture technical field.
Description
Technical field
The utility model relates to a kind of chair central shaft, is mainly applicable to technical field of furniture.
Background technology
Swivel chair commercially occupies larger share with its convenience used, but most swivel chair rotational angle is unrestricted in the market, can arbitrarily rotate, in actual use, easily electric wire, data wire etc. are wound on the central shaft of swivel chair, cause potential safety hazard.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of chair central shaft for above-mentioned Problems existing, can effectively limit its rotational angle, avoids being wound around.
The technical scheme that the utility model adopts is: a kind of chair central shaft, it comprises outer tube, coaxially arranged lining in this outer tube, coaxially runs through the axis of this lining, described axis one end overcoat bearing also coaxially terminates on the end face of described outer pipe bottom through after described lining by snap lock, the part that axis is positioned at lining is provided with the bayonet lock protruding from axis surface, be processed with inside described lining at least two corresponding with described bayonet lock to realize the spacing restriction protrusion of rotational angle, each restriction protrusion is evenly arranged around busing axis.
Form a shaft shoulder on described axis, for bearings mounted position, described bearing one side end face contacts with the described shaft shoulder, and opposite side contacts with inside described outer pipe bottom end face.
Described bearing comprise offer some ball grooves rolling sheet, be placed in ball grooves and the ball that can freely rotate, be positioned at rolling sheet and ball both sides and the two panels rolling pad only contacted with ball; Described rolling sheet, ball and two panels rolling pad compress the inner side being arranged at the described shaft shoulder and outer pipe bottom end face.
A plastic spacer is provided with between the described shaft shoulder and bearing.
Described bayonet lock has two, with the axis of axis for symmetry axis is symmetrically arranged on the outer wall of axis; Described restriction protrusion has two, with the axis of axis for symmetry axis is symmetrically arranged in sleeve inner surface.
Described outer tube is provided with the eyelet for preventing lining from rotating within it.
The locking gasket be placed on described axis is provided with between described buckle and the end face of outer pipe bottom.
The beneficial effects of the utility model are: the utility model axis outer surface is symmetrically arranged with two bayonet locks, be processed with inside described lining two corresponding with described bayonet lock to realize the spacing restriction protrusion of rotational angle, this structure effectively limits the angle of central axis, its maximum rotation angle is made to be 180 degree, electric wire, data wire etc. effectively can be avoided to be wound on the central shaft of swivel chair, to avoid potential safety hazard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation after the utility model assembling.
Fig. 3 is the structural representation bottom the utility model.
Detailed description of the invention
As shown in Figure 1-Figure 3, a kind of chair central shaft of the present embodiment, comprise outer tube 1, coaxially arranged lining 2 in this outer tube, coaxially run through the axis 3 of this lining, described axis 3 one end overcoat bearing 4 is also coaxially locked on the end face bottom described outer tube 1 through after described lining 2 by buckle 8, the part that axis 3 is positioned at lining 2 is provided with the bayonet lock 5 protruding from axis 3 surface, bayonet lock 5 described in this example has two, with the axis of axis 3 for symmetry axis is symmetrically arranged on the outer wall of axis 3; Be processed with inside described lining 2 two corresponding with described bayonet lock 5 to realize the spacing restriction protrusion of rotational angle 6, two restriction protrusion 6 with the axis of axis 3 for symmetry axis is symmetrically arranged in lining 2 inner surface.This structure effectively limits the angle of central axis, makes its maximum rotation angle be 180 degree, can effectively avoid electric wire, data wire etc. to be wound on the central shaft of swivel chair.
Form a shaft shoulder 3-1 on described axis 3, for the position of installing bearing 4, described bearing 4 one side end face contacts with described shaft shoulder 3-1, and opposite side contacts with inside described outer tube 1 bottom end face.In order to ensure the smooth of bearing working, the present embodiment is provided with a plastic spacer 7 between described shaft shoulder 3-1 and bearing 4.
Described bearing 4 comprise offer some ball grooves rolling sheet 4-1, be placed in ball grooves and the ball 4-2 that can freely rotate, be positioned at rolling sheet 4-1 and ball 4-2 both sides and the two panels rolling pad 4-3 only contacted with ball; Described rolling sheet 4-1, ball 4-2, two panels rolling pad 4-3 and plastic spacer 7 compress the inner side being arranged at described shaft shoulder 3-1 and outer tube 1 bottom end face, utilize the rolling of ball 4-2, realize the rotation of axis 3.
Described outer tube 1 being provided with the eyelet 9 for preventing lining 2 from rotating within it, back bush 2 being installed and can not rotating in outer tube 1, use safety.
The locking gasket 10 be placed on described axis 3 is provided with between end face bottom described buckle 8 and outer tube 1.
Not only the cross section of described lining 2 is gear-like, and this structure saves material but also can not affect the intensity of lining 2.
Claims (7)
1. a chair central shaft, it comprises outer tube (1), coaxially arranged lining (2) in this outer tube, coaxially run through the axis (3) of this lining, described axis (3) one end overcoat bearing (4) is also coaxially locked in by buckle (8) on the end face of described outer tube (1) bottom through described lining (2) afterwards, it is characterized in that: the part that axis (3) is positioned at lining (2) is provided with the bayonet lock (5) protruding from axis (3) surface, described lining (2) inner side be processed with at least two corresponding with described bayonet lock (5) to realize the spacing restriction protrusion of rotational angle (6), each restriction protrusion (6) is evenly arranged around lining (2) axis.
2. chair central shaft according to claim 1, it is characterized in that: on described axis (3), form a shaft shoulder (3-1) for the position of installing bearing (4), described bearing (4) side end face contacts with the described shaft shoulder (3-1), and opposite side contacts with inside described outer tube (1) bottom end face.
3. chair central shaft according to claim 2, is characterized in that: described bearing (4) comprise offer some ball grooves rolling sheet (4-1), be placed in ball grooves and the ball (4-2) that can freely rotate, be positioned at rolling sheet (4-1) and ball (4-2) both sides and the two panels rolling pad (4-3) only contacted with ball; Described rolling sheet (4-1), ball (4-2) and two panels rolling pad (4-3) compress the inner side being arranged at the described shaft shoulder (3-1) and outer tube (1) bottom end face.
4. the chair central shaft according to Claims 2 or 3, is characterized in that: be provided with a plastic spacer (7) between the described shaft shoulder (3-1) and bearing (4).
5. the chair central shaft according to claim 1 or 2 or 3, is characterized in that: described bayonet lock (5) has two, is that symmetry axis is symmetrically arranged on the outer wall of axis (3) with the axis of axis (3); Described restriction protrusion (6) has two, is that symmetry axis is symmetrically arranged in lining (2) inner surface with the axis of axis (3).
6. the chair central shaft according to claim 1 or 2 or 3, is characterized in that: described outer tube (1) is provided with the eyelet (9) for preventing lining (2) from rotating within it.
7. the chair central shaft according to claim 1 or 2 or 3, is characterized in that: be provided with the locking gasket (10) be placed on described axis (3) between the end face of described buckle (8) and outer tube (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530920.4U CN204994991U (en) | 2015-07-22 | 2015-07-22 | Center pin for chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530920.4U CN204994991U (en) | 2015-07-22 | 2015-07-22 | Center pin for chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204994991U true CN204994991U (en) | 2016-01-27 |
Family
ID=55151904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520530920.4U Expired - Fee Related CN204994991U (en) | 2015-07-22 | 2015-07-22 | Center pin for chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204994991U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448452A (en) * | 2018-12-30 | 2019-03-08 | 郑州职业技术学院 | A kind of multi-functional Chinese literature study display board |
| CN111132582A (en) * | 2017-07-06 | 2020-05-08 | 阿什利家具工业公司 | Motion furniture mechanism with pre-aligned link components |
-
2015
- 2015-07-22 CN CN201520530920.4U patent/CN204994991U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111132582A (en) * | 2017-07-06 | 2020-05-08 | 阿什利家具工业公司 | Motion furniture mechanism with pre-aligned link components |
| CN109448452A (en) * | 2018-12-30 | 2019-03-08 | 郑州职业技术学院 | A kind of multi-functional Chinese literature study display board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20180722 |