CN2286500Y - Insertion type expanding fastening means - Google Patents
Insertion type expanding fastening means Download PDFInfo
- Publication number
- CN2286500Y CN2286500Y CN 97207177 CN97207177U CN2286500Y CN 2286500 Y CN2286500 Y CN 2286500Y CN 97207177 CN97207177 CN 97207177 CN 97207177 U CN97207177 U CN 97207177U CN 2286500 Y CN2286500 Y CN 2286500Y
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- CN
- China
- Prior art keywords
- expanding
- expansion
- plug
- circular hole
- sleeve
- 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 relates to an insertion type expanding fastening body which is composed of an expanding sleeve tube and an expanding nail. The utility model is characterized in that the expanding sleeve tube is in a tubular structure with a circular hole in the middle, and the diameter of the front end of the circular hole is gradually shrunken; the front end of the sleeve tube is provided with a cross bursting groove. The diameter of the expanding nail is smaller than that of the circular hole of the back part of the sleeve tube and is larger than that of the circular hole of the front part, and the expanding nail is pegged into the sleeve tube; the expanding nail oppresses the front part of the expanding sleeve tube to expand to oppress a fixed hole, which enables the nail body to be tightly fixed. The utility model has the advantages of simple structure and convenient use and operation, alters the expanding mechanism of the existing expanding screw bolt, changes the line expansion into the surface expansion, enhances the fastness, the reliability and the intensity of the utility model, and is a novel expanding fastening body.
Description
The utility model relates to a kind of expansion fastener, particularly a kind of plug-in type expansion fastener.
The general expansion nut that adopts when present stage is installed object on body of wall or ceiling board.Insert the expansion nut after body of wall boring, swivel nut draws nut outward, and the cone of its afterbody forces casing expandable, and compressing body of wall hole makes nut and body of wall fastening.Need screw nut when this expansion nut is installed, till fastening, operation is complicated always.Because this nut only depends on outermost one circle of nut afterbody cone fastening with body of wall when expanding, be that the line contact is fixing, its soundness, reliability are all relatively poor.In addition this nut fixedly back wall generally also leave one section nut outward, neither attractive in appearance, inconvenient again when object is installed.
The purpose of this utility model provides a kind of plug-in type expansion fastener, and the line contact that it will have the expansion nut now is expanded and fixedly changed the face contact into and expand fixingly, increases the expansion surface of contact, thus the enhancing soundness.
The technical solution of the utility model is: a kind of plug-in type expansion fastener, form by expansion sleeve and expandable nail, it is characterized in that described expansion sleeve is the round-meshed tubular structure in a kind of centre, the diameter of circular hole front end progressively dwindles, the front end of sleeve pipe has cross spalling groove, described expandable nail diameter less than the circular hole at sleeve pipe rear portion greater than the circular hole of front portion.After expansion sleeve is put into fixed hole like this, expandable nail is inserted sleeve pipe, with hammer expandable nail is hammered into the sleeve pipe front portion, expandable nail compressing expansion sleeve front portion is expanded anterior one section sleeve pipe in fixed hole, realize the fastening of fastener.
This plug-in type expansion fastening body structure is simple, uses easy to operate.It has changed the mechanism of intumescence of existing expansion nut, and modified line is expanded to surface expansion, and soundness, reliability and the intensity of fastener are strengthened greatly, can reduce cost simultaneously.This expander not only can be used for the object of body of wall or ceiling board to be installed, and also can be used for mechanical parts and install, be a kind of novel expansion fastener, very wide application is arranged.
Describe structure of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to cut-away view.
Fig. 3 is second a kind of embodiment's of the present utility model sleeve structure schematic representation.
Fig. 4 is the third an embodiment's of the present utility model sleeve structure schematic representation.
As shown in Figure 1, this plug-in type expansion fastener is made up of expansion sleeve 1 and expandable nail 5.Has circular hole 2 in the expansion sleeve 1.The anterior diameter of this circular hole 2 progressively dwindles.The front portion of expansion sleeve 1 has cross spalling groove 3 simultaneously, as shown in Figure 2.The effect that circular hole 2 front portions progressively dwindle is that the insertion to expandable nail 5 plays guiding and expands.This shrinkage cavity can be step-like, and its ladder number is being best more than three.Outer wall at expansion sleeve 1 is provided with anti-skidding line 7, and purpose is to increase frictional force, prevents that sleeve pipe from skidding in the wall hole.The stage casing of expandable nail 5 is provided with annular knurl 6, and its effect is to utilize annular knurl to make expandable nail 5 and circular hole 2 temporary fixed, and is easy to operate when being convenient to upwards hammer into.
The rear portion outer wall of expansion sleeve embodiment illustrated in fig. 1 is provided with screw thread, connects, is threaded onto by nut 4 during mounting article that sleeve pipe is external to be finished.
Fig. 3, Fig. 4 are the other two kinds of embodiments' of this plug-in type expansion fastener sleeve structure schematic representation.The afterbody of its expansion sleeve 1 is provided with locking cap 8, can directly object be fixed on the body of wall by locking cap 8.Wherein Fig. 3 exposes nail head type: be provided with tapered slope outside the circular orifices of sleeve pipe afterbody, be convenient to extract expandable nail, thereby take out expansion sleeve, unload the object that is fixed.Fig. 4 is built-in nail head type: the pit that also has a built-in ailhead at the circular orifices place of sleeve pipe afterbody.This type is for one-time fixing, and ailhead can not take out.
Claims (6)
1. plug-in type expansion fastener, form by expansion sleeve and expandable nail, it is characterized in that described expansion sleeve is the round-meshed tubular structure in a kind of centre, the diameter of circular hole front end progressively dwindles, the front end of sleeve pipe has cross spalling groove, described expandable nail diameter less than the circular hole at sleeve pipe rear portion greater than the circular hole of front portion.
2. plug-in type expansion fastener according to claim 1 is characterized in that described shrinkage cavity is step-like, and its ladder number is more than three.
3. plug-in type expansion fastener according to claim 1 is characterized in that being provided with anti-skidding line at the outer wall of described expansion sleeve.
4. plug-in type expansion fastener according to claim 1 is characterized in that being provided with annular knurl in the stage casing of described expandable nail.
5. according to claim 1 or 2 or 3 or 4 described plug-in type expansion fasteners, it is characterized in that the afterbody of described expansion sleeve is provided with locking cap, outside the circular orifices of sleeve pipe afterbody, be provided with the desirable tapered slope that goes out ailhead.
6. according to claim 1 or 2 or 3 or 4 described plug-in type expansion fasteners, it is characterized in that the afterbody of described expansion sleeve is provided with locking cap, also have the pit of a built-in ailhead at the circular orifices place of sleeve pipe afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207177 CN2286500Y (en) | 1997-02-04 | 1997-02-04 | Insertion type expanding fastening means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207177 CN2286500Y (en) | 1997-02-04 | 1997-02-04 | Insertion type expanding fastening means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2286500Y true CN2286500Y (en) | 1998-07-22 |
Family
ID=33927001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207177 Expired - Fee Related CN2286500Y (en) | 1997-02-04 | 1997-02-04 | Insertion type expanding fastening means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2286500Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255784A (en) * | 2019-05-10 | 2020-06-09 | 上海踏蓝实业有限公司 | Quick-mounting inner expansion bolt |
| CN112057152A (en) * | 2020-09-11 | 2020-12-11 | 天津市威曼生物材料有限公司 | Intramedullary nail system |
-
1997
- 1997-02-04 CN CN 97207177 patent/CN2286500Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255784A (en) * | 2019-05-10 | 2020-06-09 | 上海踏蓝实业有限公司 | Quick-mounting inner expansion bolt |
| CN112057152A (en) * | 2020-09-11 | 2020-12-11 | 天津市威曼生物材料有限公司 | Intramedullary nail system |
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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 |