CN205001311U - Back frame pipe locking mechanism - Google Patents
Back frame pipe locking mechanism Download PDFInfo
- Publication number
- CN205001311U CN205001311U CN201520762726.9U CN201520762726U CN205001311U CN 205001311 U CN205001311 U CN 205001311U CN 201520762726 U CN201520762726 U CN 201520762726U CN 205001311 U CN205001311 U CN 205001311U
- Authority
- CN
- China
- Prior art keywords
- screw thread
- section
- screw
- frame
- base
- 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
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The utility model provides a back frame pipe locking mechanism, including the back frame, the back frame includes two frame pipes and base, and through two structural connections of screwing, the structure of screwing includes screw thread button, bullet circle between frame pipe and the base, the screw thread button includes that the inner wall is equipped with the screw thread section of first screw thread and the binding off section of being connected with the screw thread section, the great one end and screw thread section integrated into one piece of the section that closes up diameter, the frame pipe passes the screw thread button from the less one end of section that closes up to in inserting the base, base outer wall is last be equipped with with a screw -thread fit's second screw, the cover is gone up to frame pipe in the screw button has the bullet circle, and the bullet circle lies in the section that closes up, and this mechanism has cancelled original welded nut cover to and with welded nut cover matched with handle screw, during the use, rotate the screw thread button and can tub lock on the base putting up, can scratch frame tube -surface, and lock effectually, make back frame outward appearance more succinct.
Description
Technical field
The utility model relates to wheel-chair component technical field, especially relates to a kind of back rest pipe locking mechanism.
Background technique
In current electric wheelchair especially foldable electric wheeled chair, usual back rest pipe is directly welded with wheelchair frame or on wheelchair frame, welds several nut sleeve, nut sleeve is screwed in by screw of handle, screw of handle screws in the continuous locking of an end face along with screw of handle, threaded end in the face of the pressure increase of back rest pipe, thus reaches the locking to back rest pipe.The shortcoming of this locking mode to back rest pipe is: first, and the end face of screw of handle, usually with tool withdrawal groove, is easy to the scuffing causing back rest tube-surface like this, affects the outward appearance of back rest pipe in the process of screw lock; Secondly, want the backrest vehicle frame that combines needs to weld some nut sleeve with back rest pipe, this both added cost, too increased the quantity of backrest vehicle frame weld seam simultaneously, affected the surface flatness of backrest vehicle frame and attractive in appearance.
Model utility content
For solving the problems of the technologies described above, the utility model proposes a kind of back rest pipe locking mechanism, comprise backrest vehicle frame, described backrest vehicle frame comprises two frame pipes and base, described frame pipe is connected by two tightened-up structures with between described base, and described tightened-up structure comprises screw thread button, bullet circle; Described screw thread button comprises the thread section that inwall is provided with the first screw thread and the closing in section be connected with described thread section; One end that described closing in section diameter is larger and described thread section one-body molded; Described frame pipe passes described screw thread button from described less one end of closing in section, and inserts in described base, and described base outer wall is provided with the second screw thread with described first screw-thread fit; On frame pipe in described screw thread button, cover has described bullet circle, and described bullet circle is positioned at described closing in section.
Preferably, described bullet circle is circumferentially provided with breach.
Preferably, described thread section outer wall is provided with vertical slideproof tooth.
The back rest pipe locking mechanism that the utility model proposes has following beneficial effect: mechanism eliminates original welded nut cover, and the screw of handle to match with welded nut cover, during use, rotating screw thread button can lock onto on base by frame pipe, can not scratch frame tube-surface, and locking effect is good, make backrest vehicle frame outward appearance more succinct.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described.
Fig. 1 is structural blast figure of the present utility model;
Fig. 2 is erection drawing of the present utility model;
Fig. 3 is the schematic diagram of screw thread button of the present utility model;
Fig. 4 is the schematic diagram of bullet circle of the present utility model;
Wherein, 1-frame pipe, 2-base, 3-screw thread button, 4-bullet circle, 5-thread section, 6-closing in section, 7-second screw thread, 8-breach.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described.
Composition graphs 1, Fig. 2, Fig. 3, Fig. 4, the utility model proposes a kind of back rest pipe 1 locking mechanism, comprise backrest vehicle frame, described backrest vehicle frame comprises two frame pipes 1 and base 2, be connected by two tightened-up structures between described frame pipe 1 with described base 2, described tightened-up structure comprises screw thread button 3, bullet circle 4; Described screw thread button 3 comprises the thread section 5 that inwall is provided with the first screw thread and the closing in section 6 be connected with described thread section 5; One end that described closing in section 6 diameter is larger and described thread section 5 one-body molded; Described frame pipe 1 passes described screw thread button 3 from described less one end of closing in section 6, and inserts in described base 2, and described base 2 outer wall is provided with the second screw thread 7 with described first screw-thread fit; On frame pipe 1 in described screw thread button 3, cover has described bullet circle 4, and described bullet circle 4 is positioned at described closing in section 6.
Working method of the present utility model is: by above mechanism, with two hands clockwise direction rotation simultaneously screw thread button 3, bullet circle 4 is pressed in the closing in section 6 of screw thread button 3, and bullet circle 4 is placed on frame pipe 1, bullet circle 4 inner hole wall and frame pipe 1 pressure are strengthened, gradually until back rest pipe 1 is locked gradually.When needing the height regulating back rest pipe 1, use two hands counterclockwise turn screw thread button 3, bullet circle 4 resets simultaneously, diameter increases, and when departing from the closing in section 6 in screw knob when bullet circle 4, back rest pipe 1 loosens, just can regulate the height of back rest pipe 1, above process all realizes design effect.
Preferably, described bullet circle 4 is circumferentially provided with breach 8, and when compressing, the breach 8 of bullet circle 4 reduces, and internal diameter reduces, can locking rack pipe 1, and the frictional force between frame pipe 1 and screw thread button 3 also increases, and fastening effect is good.
Preferably, described thread section 5 outer wall is provided with vertical slideproof tooth, is convenient to user when rotating, and increasing frictional force can not skid.
To be apparent for those skilled in the art to the multiple amendment of embodiment, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. a back rest pipe locking mechanism, is characterized in that, comprises backrest vehicle frame, and described backrest vehicle frame comprises two frame pipes and base, and described frame pipe is connected by two tightened-up structures with between described base, and described tightened-up structure comprises screw thread button, bullet circle; Described screw thread button comprises the thread section that inwall is provided with the first screw thread and the closing in section be connected with described thread section; One end that described closing in section diameter is larger and described thread section one-body molded; Described frame pipe passes described screw thread button from described less one end of closing in section, and inserts in described base, and described base outer wall is provided with the second screw thread with described first screw-thread fit; On frame pipe in described screw thread button, cover has described bullet circle, and described bullet circle is positioned at described closing in section.
2. back rest pipe locking mechanism according to claim 1, is characterized in that, described bullet circle is circumferentially provided with breach.
3. back rest pipe locking mechanism according to claim 1, is characterized in that, described thread section outer wall is provided with vertical slideproof tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520762726.9U CN205001311U (en) | 2015-09-29 | 2015-09-29 | Back frame pipe locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520762726.9U CN205001311U (en) | 2015-09-29 | 2015-09-29 | Back frame pipe locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001311U true CN205001311U (en) | 2016-01-27 |
Family
ID=55158200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520762726.9U Expired - Fee Related CN205001311U (en) | 2015-09-29 | 2015-09-29 | Back frame pipe locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001311U (en) |
-
2015
- 2015-09-29 CN CN201520762726.9U patent/CN205001311U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205001311U (en) | Back frame pipe locking mechanism | |
| CN206227941U (en) | A kind of screw rod rotation regulation lifting leg | |
| CN210196588U (en) | Health instant heating faucet with lifting device | |
| CN204628886U (en) | A kind of agricultural pipe fitting joining structure for automobile | |
| CN207583813U (en) | A kind of nut of anti-slip thread | |
| CN201027733Y (en) | Novel pipe coupling structure | |
| CN208008211U (en) | A kind of cable winding apparatus | |
| CN204053977U (en) | Multifunctional hammer | |
| CN206200896U (en) | Assembled multi-purpose tool | |
| CN206253758U (en) | Large gear fixture | |
| CN206480823U (en) | A kind of convenient for wiring line plate | |
| CN208132782U (en) | A kind of Multifunctional holding clamp tool of furniture filler | |
| CN207432127U (en) | A kind of device for will be locked by locking member | |
| CN207170552U (en) | A kind of tank body corrector | |
| CN206433990U (en) | A kind of brush applied to cleaning product | |
| CN206029786U (en) | Do not pound hammer of hand | |
| CN107837147B (en) | Medical chair | |
| CN214811035U (en) | Experimental platform for health detection | |
| CN210250994U (en) | Self-locking horizontal bar | |
| CN104741696B (en) | Multipurpose self-locking file handle | |
| CN204137272U (en) | A kind of electric bicycle handle grip anti-slip structure | |
| CN203098529U (en) | Nut suite capable of being fastened manually | |
| CN204524413U (en) | Multiplex self-locking Handle of file | |
| CN203666886U (en) | Adjusting handlebar stem | |
| CN206608426U (en) | Double-tube screw |
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: 20180929 |