CN2667970Y - Chair lifting mechanism - Google Patents
Chair lifting mechanism Download PDFInfo
- Publication number
- CN2667970Y CN2667970Y CNU2003201078570U CN200320107857U CN2667970Y CN 2667970 Y CN2667970 Y CN 2667970Y CN U2003201078570 U CNU2003201078570 U CN U2003201078570U CN 200320107857 U CN200320107857 U CN 200320107857U CN 2667970 Y CN2667970 Y CN 2667970Y
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- CN
- China
- Prior art keywords
- hollow bolt
- diameter shaft
- stopping
- pin
- 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
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Abstract
The aim of the utility model is to design a chair lifting mechanism. The structure of the utility model is that the inner wall of an outer shell is provided with a screw nut which is connected with the outer shell to form an integration and provided with internal threads, and the screw nut is sheathed with a lifting upright shaft. The upped end of the lifting upright shaft is a major diameter shaft, and the lower end of the lifting upright shaft is a minor diameter shaft. The bottom end of the minor diameter shaft is provided with a pin hole passing through in radical direction, and the periphery of the minor diameter shaft of the lifting upright shaft is respectively sheathed with a pressure spring, a plane bearing and a hollow bolt from top to bottom. The hollow bolt is matched with the screw nut, the bottom of the hollow bolt is provided with a stopping flute, a stopping pin is embedded in the pin hole of the minor diameter shaft and positioned in the stopping flute, and the bottom of the screw nut is provided with a positioning ring. Since the bottom of the hollow bolt is provided with the stopping flute, the stopping pin is separated from the stopping flute when the user sits down. Even if the chair is rotated, the chair can not be lifted up or dropped down. When the user stands up, the stopping pin falls into the flute and sticks at the lower end surface of the hollow bolt, and the chair can be rotated to achieve the lifting effect.
Description
(1) technical field
The utility model relates to a kind of seat riser.
(2) background technology
Existing cylindrical rotating lifter, lifting vertical shaft and bolting link into an integrated entity, and are only needing spinfunction, when not needing elevating function, have rotated the lifting vertical shaft, and existing cylindrical rotating lifter still can form elevating function, makes troubles to use; And be subjected to the continuous relative motion of bolts and nuts under the weight situation, and quickened the wearing and tearing of bolts and nuts, reduce service life.
Existing cylindrical vapour-pressure type lifter, owing to adopt Compressed Gas control lifting, so very strict to the seal request of gases at high pressure, production cost is high, very easily produces the gas leakage and causes product quality problem and hidden danger safe in utilization.
(3) utility model content
The purpose of this utility model provides a kind of seat riser, and when the user sat down, no matter how seat rotated, and can not produce the lifting effect, and only rotation just has the lifting effect when the user leaves seat.
For reaching above-mentioned purpose, seat riser of the present utility model is characterized in, comprising: an outer valve jacket; One fixedly is embedded at the nut in the described outer valve jacket, and its lower end endoporus forms the screw thread inwall; One lifting vertical shaft includes the major diameter axle of upper end and the small diameter shaft of lower end, and described small diameter shaft bottom is provided with one and radially runs through pin-and-hole; Be set in compression spring, plane bearing and hollow bolt on the described small diameter shaft successively; The threaded outer wall of described hollow bolt matches with the screw thread inwall of described nut; Described hollow bolt bottom is formed with a dynamic resistance groove; One dynamic resistance pin is embedded in the pin-and-hole of described small diameter shaft and is positioned at described dynamic resistance groove; And a spacing collar, be installed in described nut bottom.
Adopt such structure, owing to be provided with the dynamic resistance groove in the bottom of hollow bolt, therefore the dynamic resistance pin breaks away from the dynamic resistance groove when the user sits down, even rotary seat can not make its rising or decline yet, and after the user stands up, the dynamic resistance pin then falls in the dynamic resistance groove and is close to the hollow bolt lower surface, and rotary seat can reach the lifting effect.
For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the structural representation according to the utility model seat riser.
Fig. 2 is when the user is sitting on the seat, the view of the seat riser behind the rotary seat.
Fig. 3 is as user not on the seat the time, the view of the seat riser behind the rotary seat.
(5) specific embodiment
Be illustrated in figure 1 as the structural representation of the utility model seat riser, be provided with an outer valve jacket 2, the shape of outer valve jacket 2 is generally made cylindrical shape, also can do squarely or other shape certainly; Valve jacket 2 inwalls fixedly are embedded with a nut that fuses with it 4 outside, and the hypomere endoporus of nut 4 forms the screw thread inwall, and epimere does not have screw thread.With a upper end is that major diameter axle 1-1, lower end are that the lifting vertical shaft 1 of small diameter shaft 1-2 is inserted in the nut 4, and wherein, the bottom of small diameter shaft 1-2 is provided with one and radially runs through pin-and-hole (figure does not show).Successively compression spring 5 and plane bearing 6 upwards are sheathed on simultaneously the small diameter shaft 1-2 periphery of lifting vertical shaft 1 from nut 4 bottoms, hollow bolt 3 upwards screws in and passes the below of small diameter shaft 1-2 to plane bearing 6 from nut 4 bottoms.The bottom of hollow bolt 3 is provided with a dynamic resistance groove 3-1, and a dynamic resistance pin 7 is embedded in the pin-and-hole of small diameter shaft 1-2 and places in the dynamic resistance groove 3-1.Spacing collar 8 is fixedly arranged on the bottom of nut 4, prevents that hollow bolt 3 from screwing out nut 4 downwards.
In the assembling process of above-mentioned elevating mechanism, compression spring 5 is when being inserted in small diameter shaft 1-2, make compression spring 5 compress slightly and leave certain precompression, the big or small degree of pressure must make that dynamic resistance pin 7 can be close to the lower surface of hollow bolt 3 when installing dynamic resistance pin 7 after small diameter shaft 1-2 goes up.
When the user takes seat (figure does not show), will oppress lifting vertical shaft 1 and descend, the dynamic resistance groove 3-1 that pressure forces dynamic resistance pin 7 to break away from hollow bolt 3 lower surfaces.At this moment, but lifting vertical shaft 1 is in the radial displacement state with hollow bolt 3, and hollow bolt 3 keeps relative static conditions with nut 4, when the user rotates on the seat, lifting vertical shaft 1 also rotates, but just idle running can not drive hollow bolt 3 and move up or down along nut 4 inwalls, has guaranteed can not make when the user rotates on the seat seat to raise or decline.
When the user stand up from seat leave seat after, lifting vertical shaft 1 original suffered downward axial compressive force disappears, because the elastic restoring force of compression spring 5 makes lifting vertical shaft 1 move upward, 7 initial positions that playback as shown in fig. 1 of dynamic resistance pin promptly are positioned at the dynamic resistance groove 3-1 of hollow bolt 3 and are close to its lower surface.At this moment, lifting vertical shaft 1 keeps relative static conditions with hollow bolt 3, when driving 1 rotation of lifting vertical shaft when user's rotary seat, owing to exist bigger frictional force between dynamic resistance pin 7 and hollow bolt 3 lower surfaces, to drive hollow bolt 3 together rotates up or down along nut 4 inwalls, thereby make lifting vertical shaft 1 also and then rising or decline of seat when rotated, Fig. 3 shows the situation that descends along nut inner wall when rotation and lifting vertical shaft 1.
The nut 4 that uses in the utility model seat riser, hypomere is provided with internal thread, epimere does not have screw thread, guaranteed that like this hollow bolt 3 upwards raises to greatest extent along nut 4 inwalls when rotation and lifting vertical shaft 1, prevent hollow bolt 3 endless rotating up and break away from outer valve jacket 2, and be fixedly arranged on the spacing collar 8 of nut 4 bottoms, guaranteed that hollow bolt 3 reduces to greatest extent along nut 4 inwalls, prevents hollow bolt 3 downward whiz nuts 4 downwards.
Aforesaid seat riser, owing to be provided with the dynamic resistance groove in the bottom of hollow bolt, therefore the dynamic resistance pin breaks away from the dynamic resistance groove when the user sits down, even rotary seat can not make its rising or decline yet, and after the user stands up, the dynamic resistance pin then falls in the dynamic resistance groove and is close to the hollow bolt lower surface, and rotary seat can reach the lifting effect.
Though the utility model is described with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, under the situation that does not break away from the utility model spirit, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of the utility model claims in connotation scope of the present utility model.
Claims (2)
1. a seat riser is characterized in that, comprising:
One outer valve jacket;
One fixedly is embedded at the nut in the described outer valve jacket, and its lower end endoporus forms the screw thread inwall;
One lifting vertical shaft includes the major diameter axle of upper end and the small diameter shaft of lower end, and described small diameter shaft bottom is provided with one and radially runs through pin-and-hole;
Be set in compression spring, plane bearing and hollow bolt on the described small diameter shaft successively; The threaded outer wall of described hollow bolt matches with the screw thread inwall of described nut; Described hollow bolt bottom is formed with a dynamic resistance groove;
One dynamic resistance pin is embedded in the pin-and-hole of described small diameter shaft and is positioned at described dynamic resistance groove; And
One spacing collar is installed in described nut bottom.
2. seat riser as claimed in claim 1 is characterized in that: described outer valve jacket is a cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201078570U CN2667970Y (en) | 2003-11-07 | 2003-11-07 | Chair lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201078570U CN2667970Y (en) | 2003-11-07 | 2003-11-07 | Chair lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667970Y true CN2667970Y (en) | 2005-01-05 |
Family
ID=34438706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201078570U Expired - Fee Related CN2667970Y (en) | 2003-11-07 | 2003-11-07 | Chair lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667970Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117800A (en) * | 2013-04-26 | 2014-10-29 | 上海道多汽车设备有限公司 | Exchange mechanism for white vehicle body welding clamp of vehicle |
| CN109094692A (en) * | 2017-06-20 | 2018-12-28 | 北京必和易达知识产权咨询中心（有限合伙） | A kind of bicycle convenient for adjusting seat |
| CN110074576A (en) * | 2019-05-21 | 2019-08-02 | 淳安青节电子商务有限公司 | Screw rod is used in a kind of lifting of high security seat |
-
2003
- 2003-11-07 CN CNU2003201078570U patent/CN2667970Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117800A (en) * | 2013-04-26 | 2014-10-29 | 上海道多汽车设备有限公司 | Exchange mechanism for white vehicle body welding clamp of vehicle |
| CN109094692A (en) * | 2017-06-20 | 2018-12-28 | 北京必和易达知识产权咨询中心（有限合伙） | A kind of bicycle convenient for adjusting seat |
| CN110074576A (en) * | 2019-05-21 | 2019-08-02 | 淳安青节电子商务有限公司 | Screw rod is used in a kind of lifting of high security seat |
| CN110074576B (en) * | 2019-05-21 | 2024-01-19 | 淳安青节电子商务有限公司 | Screw rod for lifting high-safety seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |