CN2297583Y - Theft-proof bolt assembly - Google Patents
Theft-proof bolt assembly Download PDFInfo
- Publication number
- CN2297583Y CN2297583Y CN 96230068 CN96230068U CN2297583Y CN 2297583 Y CN2297583 Y CN 2297583Y CN 96230068 CN96230068 CN 96230068 CN 96230068 U CN96230068 U CN 96230068U CN 2297583 Y CN2297583 Y CN 2297583Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- nut
- nut body
- theft
- shape
- 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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- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to a theft-proof bolt assembly which comprises a screw rod and a nut, wherein a nut body is made into the shape of a ball table, and the head of the screw rod is made into the shape of a ball cap; the bottom sides of the nut body and the screw rod are made into an odd polygonal shape, and thus, the screw rod and the nut can not be clamped by conventional tools. In addition, shims are arranged on the bottom sides of the nut body and the head of the screw rod to enable the utility model to have the characteristics of simple structure, convenient manufacture, secure and reliable use, theft-proof function, etc.
Description
The utility model relates to a kind of fastening piece, belong to the improvement of fastening piece.
As everyone knows, the fastening piece of standard is based on the bolt assembly of hexagonal configuration, it comprises hexagon screw head and the six-sided nut that matches, the bolt assembly that also has plenty of square shape, because they all adopt the even number of axial symmetry to meet shape, thereby use conventional instrument such as spanner etc. to clamp the symmetrical parallel limit can conveniently to turn bolt assembly, just owing to this, some all often taking place because of the readily removable and stolen phenomenon of fastening piece, has caused immeasurable loss to state and collective in various machinery and electric power facility.Although on patent gazette, disclose the bolt assembly of some antitheft, anti-conifers at present, take a broad view of their structure, or structure is too complicated, use extremely inconvenience, or antitheft effect is poor, does not have good anti-theft effect.
The purpose of this utility model is in order to overcome the deficiency of above-mentioned existence, and the anti-theft bolt component that provides the conventional instrument of a kind of usefulness can't clamping and turn.
The purpose of this utility model is finished by following technical solution, and described bolt assembly comprises screw rod and nut two-part, and wherein nut body is made the billiard table shape, and it is polygon-shaped that the nut body bottom side of this billiard table shape is made into odd number.
Also be provided with the pad of evagination on the base of described billiard table shape nut body,, increase impacting force to increase the area of contact of this limit to fastening object.
Screw head described in the utility model is made into the spherical crown shape, and it is polygon-shaped that its bottom side also is made into odd number, makes the conventional instrument can't clamping.
Described screw head also is provided with the pad of evagination on its base, it also can play the corresponding effect that increases impacting force equally.
The utility model is the Heptagon shape with the polygon-shaped optimal selection of nut and screw rod, uses same special tool to get final product corresponding nut and the screw rod of turning.
Description of drawings is as follows:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to structural representation.
Below will the utility model is further introduced by accompanying drawing: the utility model comprises screw rod 1 and nut 2 two-part, and nut 2 is to be shaped on screw 4 on nut body 3, and the internal thread in it matches with the outside thread in the screw rod 1 bar portion 5.Nut body 3 adopts the billiard table shape, and the bottom side of the nut body 3 of this billiard table shape is made into positive Heptagon shape, and it is polygon-shaped also it can be made odd numbers such as positive three limits or positive five limits, and it is asymmetric parallel mutually with the axle center to make it each limit, and conventional instrument can't clamping.Screw rod 1 has head 6 and screw rod 5, and head 6 is made into the spherical crown shape, and its bottom side and nut body 3 be the same to be made into positive Heptagon shape, and also can as required it being made positive three limits or positive five, odd number such as to meet polygon-shaped.Because the head of this screw rod 1 is polygon-shaped with the nut body 2 the same odd numbers that are made into, its axial periphery is also asymmetric, conventional instrument also can't turn its clamping, can equally with nut play antitheft effect in this use occasion that screw head is exposed, and in practice, built-in as screw head, at this moment also available common screw cooperates the same antitheft effect of playing with anti-theft nut.In order to increase the clamping force between screw rod 1 and the nut 2, the base of the utility model nut 2 is provided with the pad 7 of an evagination, on the head base of screw rod 1, also be provided with the pad 8 of an evagination, when they during at clamping article, owing to be in contact with one another area evenly and increase, be delivered on the object equably after making clamping force can be distributed on pad.It has not only played the effect of general pad, and have easy to use, effect such as be difficult for losing.
The utility model compared with prior art has simple in structurely, easy to make, uses The characteristics such as safe and reliable because conventional instrument can't make it loosening, thereby have played well anti-Robber's effect.
Claims (5)
1, a kind of anti-theft bolt component, it comprises screw rod and nut, it is characterized in that described nut body (3) adopts the billiard table shape, it is polygon-shaped that the nut body of this billiard table shape (3) bottom side is made into odd number.
2, anti-theft bolt component as claimed in claim 1 is characterized in that the base of described nut body (3) is provided with the pad (7) of evagination.
3, anti-theft bolt component as claimed in claim 1 or 2, the head that it is characterized in that described screw rod (1) is the spherical crown shape, it is polygon-shaped that its bottom side also is made into odd number.
4, anti-theft bolt component as claimed in claim 3 is characterized in that also being provided with on described screw head (6) base pad (8) of evagination.
5, anti-theft bolt component as claimed in claim 4 is characterized in that described nut body (3) and screw head (6) are positive Heptagon shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230068 CN2297583Y (en) | 1996-06-18 | 1996-06-18 | Theft-proof bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230068 CN2297583Y (en) | 1996-06-18 | 1996-06-18 | Theft-proof bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2297583Y true CN2297583Y (en) | 1998-11-18 |
Family
ID=33907581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96230068 Expired - Fee Related CN2297583Y (en) | 1996-06-18 | 1996-06-18 | Theft-proof bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2297583Y (en) |
-
1996
- 1996-06-18 CN CN 96230068 patent/CN2297583Y/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 |