CN2876406Y - Plastic expansion pin bolt - Google Patents
Plastic expansion pin bolt Download PDFInfo
- Publication number
- CN2876406Y CN2876406Y CN 200520037497 CN200520037497U CN2876406Y CN 2876406 Y CN2876406 Y CN 2876406Y CN 200520037497 CN200520037497 CN 200520037497 CN 200520037497 U CN200520037497 U CN 200520037497U CN 2876406 Y CN2876406 Y CN 2876406Y
- Authority
- CN
- China
- Prior art keywords
- pin body
- pin
- wall
- plastic expansion
- groove
- 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 utility model discloses a plastic expanding pin, including the pin body which is the center-hollowed and pipe-shaped; on the pin body is equipped with at least two penetrated grooves parallel to the pin body axis; the penetrated grooves connect the outer wall and the inner wall of the pin body; on the inner wall of the pin body is equipped with at least one circle of inner grooves; on the outer wall of the pin body is equipped with at least one circle of outer grooves; the inner and outer grooves both are vertical to the axis of the pin body; the insert end of the pin body has a contracted-neck hole connected with the center-hollowed cavity of the pin body. The utility model is not only with big tension, difficult to break off, easy to remove and install, but also with the simple structure, low production cost, and easy to promate.
Description
Technical field
The utility model relates to a kind of pin link, particularly plastic expansion pin.
Background technique
The installation of the billboard of Xiao Shouing, sheet material, pipe fitting etc. is in the market mainly still installed with links such as rivet, self-tapping screw, bolts or is adopted welding connecting mode to install.Adopt self-tapping screw to install to exist the thread tapping pulling force little, easily come off, easily metope is caused the deficiency of damage, and also is unfavorable for dismounting again with mounting types such as welding, rivet or bolt connections, have problems such as repeated removal difficulty.
Summary of the invention
The purpose of this utility model is to provide a kind of plastic expansion pin, and not only pulling force is big, difficult drop-off, and dismounting easily, and also simple in structure, cheap for manufacturing cost, be easy to promote.
The purpose of this utility model is achieved in that a kind of plastic expansion pin, comprise the pin body, the pin body is the tubulose of hollow, at least the groove that twice and pin body axis are parallel to each other is being set on the pin body, groove is linked up the periphery wall and the inner circle wall of pin body, at least one circle inner groovy is being set on the inner circle wall of pin body, groove outside at least one circle is being set on the periphery wall of pin body, in said, outer groove is all perpendicular with the axis of pin body, has a necking down through hole that is connected with the hollow cavity of pin body in the insertion end of pin body.
When the utility model uses, earlier on the members such as sheet material that will connect, accomplish fluently mounting hole, the utility model plastic expansion pin is inserted in the mounting hole, then bolt or screw are inserted in the hollow cavity of plastic expansion pin, by constantly turning bolt or screw, the threaded end of bolt or screw is deepened continuously in the necking down through hole in the pin body insertion end, deepening continuously along with bolt or screw like this, make the middle part tube wall of pin body radially constantly outwards expand along it, thereby the inner chamber of mounting hole is held out against, finish connection work.Oppositely turn bolt or screw until it is withdrawed from from the pin body, then the tube wall that expands of pin body can restore to the original state again gradually, thereby the pin body can be taken out from mounting hole.Therefore, the utility model not only pulling force is big, difficult drop-off, and dismounting easily, and also simple in structure, cheap for manufacturing cost, be easy to promote.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 looks cross-sectional view for the utility model embodiment 1 master;
Fig. 2 is the A-A cross-sectional view among Fig. 1;
Fig. 3 looks cross-sectional view for the utility model embodiment 2 master;
Fig. 4 is user mode figure of the present utility model.
Embodiment
A kind of plastic expansion pin, as Fig. 1, Fig. 2, shown in Figure 3, comprise pin body 2, pin body 2 is the T font, have the stop end and an insertion end of expanding, it is conical that the profile of insertion end is, hemisphere or taper type, pin body 2 is the tubulose of hollow, at least the groove 4 that twice and pin body 2 axis are parallel to each other is being set on pin body 2, groove 4 is linked up the periphery wall and the inner circle wall of pin body 2, at least one circle inner groovy 1 is being set on the inner circle wall of pin body 2, groove 3 outside at least one circle is being set on the periphery wall of pin body 2, in said, outer groove 1,3 is all perpendicular with the axis of pin body 2, has a necking down through hole that is connected with the hollow cavity of pin body 2 in the insertion end of pin body 2.The sectional shape of inside and outside groove 1,3 is V font or circular arc, and the radially outwards expansion of tube wall that inside and outside groove 1,3 helps pin body 2 is set.As shown in Figure 1, on said necking down through-hole inner surface internal thread 5 is being set, internal thread 5 is set, and can be convenient to the screw thread of screw coupled, the convenient installation.Certainly, also internal thread can be set on the necking down through-hole inner surface, but form connecting thread thereon by self tapping screw oneself when mounted, thus the manufacturing process of simplification pin body.As shown in Figure 3, setting-in nut 6 in said necking down through hole, can conveniently use bolt to connect like this, is applicable to the occasion that join strength is big, connection reliability is had relatively high expectations.As shown in Figure 4, when turning in the hollow cavity of bolt 7 insertion pin bodies 2, the threaded end of bolt 7 is connected with the internal thread of necking down through hole, along with constantly being screwed into of bolt 7, the middle part tube wall of pin body 2 radially constantly outwards expands along it, thereby the mounting hole inner chamber on the link is held out against, finish connection work.
Claims (4)
1, a kind of plastic expansion pin, comprise pin body (2), it is characterized in that: pin body (2) is the tubulose of hollow, at least the groove (4) that twice and pin body (2) axis are parallel to each other is being set on pin body (2), groove (4) is linked up the periphery wall and the inner circle wall of pin body (2), at least one circle inner groovy (1) is being set on the inner circle wall of pin body (2), groove outside at least one circle (3) is being set on the periphery wall of pin body (2), in said, outer groove (1,3) all perpendicular with the axis of pin body (2), have a necking down through hole that is connected with the hollow cavity of pin body (2) in the insertion end of pin body (2).
2, plastic expansion pin according to claim 1 is characterized in that: the sectional shape of inside and outside groove (1,3) is V font or circular arc.
3, plastic expansion pin according to claim 1 is characterized in that: internal thread (5) is being set on said necking down through-hole inner surface.
4, plastic expansion pin according to claim 1 is characterized in that: setting-in nut (6) in said necking down through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037497 CN2876406Y (en) | 2005-12-20 | 2005-12-20 | Plastic expansion pin bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037497 CN2876406Y (en) | 2005-12-20 | 2005-12-20 | Plastic expansion pin bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876406Y true CN2876406Y (en) | 2007-03-07 |
Family
ID=37819643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520037497 Expired - Fee Related CN2876406Y (en) | 2005-12-20 | 2005-12-20 | Plastic expansion pin bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876406Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277382A (en) * | 2013-06-05 | 2013-09-04 | 邦林机械制造(上海)有限公司 | Elastic nail hook connection cap |
| CN107035751A (en) * | 2017-06-20 | 2017-08-11 | 苏州艾力光电科技有限公司 | One kind expansion muff-joint device |
-
2005
- 2005-12-20 CN CN 200520037497 patent/CN2876406Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277382A (en) * | 2013-06-05 | 2013-09-04 | 邦林机械制造(上海)有限公司 | Elastic nail hook connection cap |
| CN103277382B (en) * | 2013-06-05 | 2016-03-02 | 邦林机械制造(上海)有限公司 | Elastic nail hook connection cap |
| CN107035751A (en) * | 2017-06-20 | 2017-08-11 | 苏州艾力光电科技有限公司 | One kind expansion muff-joint device |
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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 |