CN2248793Y - Inlay type external expansion screw nut - Google Patents
Inlay type external expansion screw nut Download PDFInfo
- Publication number
- CN2248793Y CN2248793Y CN 96229036 CN96229036U CN2248793Y CN 2248793 Y CN2248793 Y CN 2248793Y CN 96229036 CN96229036 CN 96229036 CN 96229036 U CN96229036 U CN 96229036U CN 2248793 Y CN2248793 Y CN 2248793Y
- Authority
- CN
- China
- Prior art keywords
- main body
- nut
- nut main
- hole
- screw nut
- 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.)
- Ceased
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Abstract
The utility model relates to an inlay type external expansion screw nut which is characterized in that the main body of the screw nut forms a cylinder shape and is provided with a through hole in the center, and one end of the main body of the screw nut is provided with an open slot; an inner hole point on the top of the end is provided with a positioning step, and the other end of the main body of the screw nut is provided with inner screw threads. A taper pin approximately forms a flat head solid circular cone of which the outside diameter of one end is matched with that of the through hole of the main body of the screw nut, and the other end of the circular cone is larger than the through hole of the main body of the screw nut; the cross section of the taper pin forms a trapezoid. The utility model has no projection in the wall body of building, and hole making depth can be reduced by nearly a half, raw material saves by 40 percent, and the utility model also has the obvious advantages of high universality of matched bolts, safe and convenient operation, large traction force, etc.
Description
The utility model relates to the fixed connection structure spare in the field of mechanical technique, in particular for the fastening connection piece between parts and parts in building, five metals and the decoration operation.
Stressed bigger fixed connecting piece generally adopts expansible anchor of metal in the prior art, soon bolt is inserted in and places in the hole in the nut, by tighten overhanging bolt nut produce to be expanded reach the function of fastening connection piece, the deficiency one of this structure to be since bolt overhanging be not suitable in building pre-buried; The 2nd, pretty troublesome if the bolt that does not need to bury in advance in decoration is pulled out, staying body of wall internal cause double-screw bolt, to protrude influence attractive in appearance, in addition because the particularity versatility of bolt is not strong.
The purpose of this utility model is to provide a kind of stressed big embedded outer expanding nut, and it is highly versatile when being connected bolt, does not protrude overhangingly, can be used as fastening connection piece and imbeds in advance in the body of wall of building.
The technical solution of the utility model is achieved in that it comprises nut main body and taper pin, it is characterized in that: nut main body is cylindrical, its center has through hole, one end of nut main body is provided with opening slot, endoporus place at this end top has positioning step, and the other end of nut main body is provided with internal thread; Taper pin is approximately tack filled circles cone, and the external diameter of one end and the through hole of nut main body are suitable, and the other end is greater than the through hole of nut main body, and it is trapezoidal that section is.
The utility model is used traditional expanding nut and bolt with the EXPANSION ANCHOR BOLTS structure of one, being improved to only needs cooperating of expanding nut main body and taper pin, just can be with the spiral shell expanding nut as fastening connection piece, embed in the building masonry wall firmly, it is overhanging not have protrusion, the punching degree of depth only needs the length of expanding nut main body, be particularly suitable for being embedded in the building, the utility model also has the highly versatile of institute's cooperation clamping bolt, than the EXPANSION ANCHOR BOLTS of the existing same specification punching degree of depth can reduce near half, raw material save 40%, and safe in utilization, convenient, reliably, the big remarkable advantage that waits of pulling force.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 embeds schematic representation in the body of wall for Fig. 1.
The utility model will be further described below in conjunction with drawings and Examples.
The utility model is made up of nut main body 1 and taper pin 2, nut main body 1 is cylindrical, the centre is a through hole, one end of nut main body 1 is provided with opening slot 3, opening slot has the 3-6 bar, also can be provided with the shallow skewed slot 4 of 2-5 bar that intersects with the opening slot near normal or with the oblique shallow slot of opening slot oblique to increase the frictional force of nut, the length of opening slot 3 is the 1/3-1/2 of nut main body 1 length, the length of being made up of several shallow skewed slots is less than the length of opening slot, and endoporus has positioning step at the top of this end; The other end of nut main body is provided with internal thread, and the length of internal thread is the 1/4-1/2 of nut main body length; Taper pin 2 is approximately tack filled circles cone, and the outer warp of one end is suitable with the through hole of nut main body, and this end is generally the 1/3-1/2 of taper pin length, also the salient point that several match with opening slot can be set on this end.The other end is greater than the through hole of nut main body, and it is trapezoidal that section is, and tapering is 5 °-10 °.The optional engineering plastics of using of the material of this expanding nut, as high tensile steel of nylon and multiple metallic material such as stainless steel, the various trades mark etc., nut main body and taper pin should be selected same material for use.
When using the utility model, earlier with the drill bit punching of percussion drill by the specification that adapts, hole depth is the length of nut main body, one end of taper pin is placed in the through hole of band opening slot one end of nut main body, put into and bore good aperture, knock the plane of a threaded end with the hammering rod, expanding nut moves in the hole along with knocking slowly, taper pin progresses in the expanding nut body and the opening slot expansion of nut body is opened, reach fastening and equal with wall, if will connect fastening piece, only need select the bolt of same size for use, get final product in the precession nut.
Embodiment
Nut main body and taper pin are all selected plain carbon steel for use, the opening slot of nut main body is i.e. 4 opening slots of cross recess, 4 of shallow skewed slots are set, the length of opening slot is 1/2 of nut main body, the length of the other end internal thread is 1/3 of nut main body, the suitable end of taper pin and nut main body is 1/3 of a taper pin length, and the tapering of taper pin is 8 °, and totally 12 match with opening slot prominent stupefied also are set on this end taper pin.The diameter of nut main body adopts φ 8, φ 10, φ 12, φ 16, φ 20 its corresponding internal threads are selected M6 respectively for use, M8, M10, M12, the metric thread of M16, now the expanding nut of different size is embedded in (basic compressive strength 27.6MPa) in the cement wall and measures the technical order of its intensity of expression following (wherein to be that safe load is multiplied by safety coefficient long-pending for the reference value of breaking load, and safety coefficient is 3): specification safety pulling force (kg) Safety scissors (kg) screw thread stretching resistance safe load (Kg) M6 233 200 38,2M8 400 356 457,M10 517 600 659,M12 766 1033 1,411,M16 1,170 1,290 1676
Claims (4)
1. embedded outer expanding nut, it comprises nut main body and taper pin, it is characterized in that: nut main body is cylindrical, its center has through hole, one end of nut main body is provided with opening slot, has positioning step at the endoporus place at this end top, and the other end of nut main body is provided with internal thread; Taper pin is approximately tack filled circles cone, and the external diameter of one end and the through hole of nut main body are suitable, and the other end is greater than the through hole of nut main body, and it is trapezoidal that section is.
2. by the described embedded outer expanding nut of claim 1, it is characterized in that: the opening slot in nut main body one end setting has the 3-6 bar, also be provided with the crossing shallow skewed slot of 2-5 bar of opening slot near normal or with the oblique shallow slot of opening slot oblique.
3. by the described embedded outer expanding nut of claim 1, it is characterized in that: the length of opening slot is the 1/3-1/2 of nut main body length; The length of being made up of several shallow skewed slots is less than the length of opening slot; The length of internal thread is the 1/4-1/2 of nut main body length.
4. by the described embedded outer expanding nut of claim 1, it is characterized in that: the suitable end of taper pin and nut main body is the 1/3-1/2 of taper pin length, and several convex protrusion that matches with opening slot points also can be set on this end; It is 5 °-10 ° that the other end section is trapezoidal tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96229036 CN2248793Y (en) | 1996-01-05 | 1996-01-05 | Inlay type external expansion screw nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96229036 CN2248793Y (en) | 1996-01-05 | 1996-01-05 | Inlay type external expansion screw nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2248793Y true CN2248793Y (en) | 1997-03-05 |
Family
ID=33906784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96229036 Ceased CN2248793Y (en) | 1996-01-05 | 1996-01-05 | Inlay type external expansion screw nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2248793Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705959B (en) * | 2009-11-14 | 2011-10-05 | 山西大同大学 | Nut embedded type resin-anchored bolt and method for anchoring equipment by using same |
| CN111779738A (en) * | 2020-08-13 | 2020-10-16 | 盛勇 | Non-metal 3d printing piece anti-slip wire structure and traceless processing method thereof |
-
1996
- 1996-01-05 CN CN 96229036 patent/CN2248793Y/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705959B (en) * | 2009-11-14 | 2011-10-05 | 山西大同大学 | Nut embedded type resin-anchored bolt and method for anchoring equipment by using same |
| CN111779738A (en) * | 2020-08-13 | 2020-10-16 | 盛勇 | Non-metal 3d printing piece anti-slip wire structure and traceless processing method thereof |
| CN111779738B (en) * | 2020-08-13 | 2022-09-23 | 重庆大千汇鼎智能科技研究院有限公司 | Non-metal 3d printing piece anti-slip wire structure and traceless processing method thereof |
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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 | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 19991222 Decision number of declaring invalidation: 1728 |