CN2416274Y - Anti-disassembling nut and its spanner - Google Patents
Anti-disassembling nut and its spanner Download PDFInfo
- Publication number
- CN2416274Y CN2416274Y CN 98222592 CN98222592U CN2416274Y CN 2416274 Y CN2416274 Y CN 2416274Y CN 98222592 CN98222592 CN 98222592 CN 98222592 U CN98222592 U CN 98222592U CN 2416274 Y CN2416274 Y CN 2416274Y
- Authority
- CN
- China
- Prior art keywords
- spanner
- nut
- garden
- hole
- core
- 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
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model provides an anti-disassembling screw nut or screw bolt which can not be disassembled with tools, such as a general service wrench, a pipe wrench, etc. and a special spanner. The screw nut is composed of a circular screw nut and an outer sleeve. The upper end of the circular screw nut is provided with a spanner head hole which is eccentric with the outer circle of the circular screw nut. The special spanner is composed of a spanner body and a spanner core, an operating hole which is arranged at the lower part of the spanner body is concentric with a positioning hole which is arranged at the upper part, and the spanner head which is arranged at the lower part of the spanner core is eccentric with a positioning rod which is arranged at the upper part. So the utility model can be operated by inserting the positioning rod into the positioning hole, inserting the spanner head into the spanner head hole, sheathing the operating hole of the spanner body on the outer circle of the circular screw nut and rotating the spanner core or the spanner body.
Description
The utility model relates to a kind of fastening piece or machine part, particularly a kind of anti-disassembling nut, bolt and spanner thereof.
The fastener nut of current widespread usage and bolt head have shapes such as hexagon, interior hexagon, square.A common feature of these fastening pieces is exactly that available common wrench screws or unclamps, and causes with this class fastening piece fastening member or equipment and is destroyed and steal by the lawless person, causes very big loss to national wealth.
The utility model purpose provide a kind of with Allen wrench the nut that can not screw or unclamp and the spanner that is exclusively used in it.
The technical solution of the utility model is: nut is made of garden nut and overcoat, and the garden nut is positioned on the step surface of overcoat endoporus, and matches with endoporus, and a driving head hole is arranged at nut top, garden, and it and garden the nut offset in garden outward are e.
Special spanner is made of wrench body and spanner core, and positioning hole is arranged at wrench body top, and the handle hole concentric with positioning hole arranged at the bottom, the spanner core is installed in the positioning hole of wrench body, and cooperate with it, spanner core bottom is the driving end of garden cylindricality, the offset of driving end and positioning hole is e.
Jug or hexagonal are first-class in turn on the top of spanner core or wrench body.
Nut structure of the present utility model also can be used for the structure as bolt head, and the special spanner structure is identical.
The utility model has the advantages that:
The end allows to dismantle nut through the person in charge.Be tightened on this anti-disassembling nut on the equipment, round nut places overcoat, round nut top outside diameter is greater than the bottom outside diameter, overcoat is blocked, overcoat round nut rotation relatively, can not take out, and the overcoat outside is cylindrical, can prevent that the lawless person from turning on nut with instruments such as common wrench, pipe wrench and stealing national property.In addition, it and current institute accepted standard fastener forms and mode of operation are all inequality, are suitable for adopting in some specific equipment, have increased the category of fastening piece.
Accompanying drawing 1 is anti-disassembling nut and spanner sectional view thereof
Accompanying drawing 2 is anti-demounting bolt and spanner sectional view thereof
Embodiment one.
As shown in Figure 1, nut is made of garden nut 1 and overcoat 2, and garden nut 1 is positioned on the step surface of overcoat 2 endoporus, and matches with endoporus.One driving end hole is arranged on the top of garden nut, and the offset of it and garden nut is e.
Also as shown in Figure 1, special spanner is made of spanner core 6 and wrench body 3.Spanner core 6 is contained in the positioning hole on wrench body 3 tops, and cooperates with it, and the bottom of spanner core 6 is driving ends 4 of garden cylindricality, and driving end 4 is e with the offset of positioning hole, and Fig. 1 is a user mode, and driving end 4 is placed in the driving end hole on garden nut 1 top.The bottom of wrench body 3 is handle holes, and it is concentric with positioning hole, and the handle hole of wrench body is enclosed within on the outer garden post of overcoat 2.On the top of spanner core 6 hexagon head 5 is arranged, as shown in Figure 1, when the hexagon head 5 on rotating spanner core top, garden nut 1 can be screwed or it is screwed off from bolt.
Embodiment two.
Present embodiment is the situation that the structure of this model utility is used for bolt, with embodiment one difference be that spanner core top is not hexagon head but a rotatory handling 7 is arranged, other and embodiment one are identical, so no longer describe in detail.
Claims (3)
1. an anti-disassembling nut is characterized in that, nut is made of garden nut and overcoat, and the garden nut is positioned on the endoporus step surface of overcoat, and matches with endoporus, and a driving end hole is arranged at nut top, garden, and it and garden the nut offset in garden outward are e.
2. one kind is used for the described special spanner of claim 1, it is made of wrench body and spanner core, it is characterized in that, positioning hole is arranged at wrench body top, the handle hole concentric with positioning hole arranged at the bottom, and the spanner core is installed in the positioning hole of wrench body, and cooperates with it, spanner core bottom is the driving end of garden cylindricality, and the offset of driving end and positioning hole is e.
3. special spanner according to claim 2 is characterized in that, at the top of spanner core jug or hexagon head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98222592 CN2416274Y (en) | 1998-10-12 | 1998-10-12 | Anti-disassembling nut and its spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98222592 CN2416274Y (en) | 1998-10-12 | 1998-10-12 | Anti-disassembling nut and its spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2416274Y true CN2416274Y (en) | 2001-01-24 |
Family
ID=33973890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98222592 Expired - Fee Related CN2416274Y (en) | 1998-10-12 | 1998-10-12 | Anti-disassembling nut and its spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2416274Y (en) |
-
1998
- 1998-10-12 CN CN 98222592 patent/CN2416274Y/en not_active Expired - Fee Related
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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 |