CN205715181U - A kind of antitheft inward turning bolt - Google Patents
A kind of antitheft inward turning bolt Download PDFInfo
- Publication number
- CN205715181U CN205715181U CN201620534136.5U CN201620534136U CN205715181U CN 205715181 U CN205715181 U CN 205715181U CN 201620534136 U CN201620534136 U CN 201620534136U CN 205715181 U CN205715181 U CN 205715181U
- Authority
- CN
- China
- Prior art keywords
- bolt
- force application
- application part
- threaded portion
- antitheft
- 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
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Lock And Its Accessories (AREA)
Abstract
A kind of antitheft inward turning bolt, including nut portion, bolt body, threaded portion, tightens force application part；Described nut portion diameter is bigger than bolt body diameter, and surrounding is smooth curved；Described bolt body one end is connected with nut portion, and other end major part is provided with screw thread；The lower end of described threaded portion is provided with tightens force application part, and the external diameter tightening force application part is less than threaded portion diameter.Described force application part of tightening has various ways, and a kind of is to be provided with polygon projection in the lower end of threaded portion, and this polygon is hexagon, square, triangle.Another kind tightens force application part, is to be provided with polygon pit in the lower end of threaded portion, and this polygon is hexagon, square, triangle.The beneficial effects of the utility model are: simple in construction, tighten conveniently from antitheft inward turning bolt end, nut portion smooth and beautiful appearance, from nut portion cannot rotating bolt, prevent bolt from being turned on from outside by people.
Description
Technical field
This utility model relates to five metals firm part field, particularly relates to a kind of antitheft inward turning bolt.
Background technology
Bolt is a kind of connector the most frequently used in industrial products, it is common that nut portion is designed to hexagon, tetragon
Tighten screw etc. specific purpose tool easy to use, or hexagonal counterbore in nut portion designs, but be used in antitheft door, condom,
During some special connecting portions such as regulation box that inaccurate stranger opens, door lock, these screws also give thief one from the outside
The condition turned on, is nothing but polyvoltine a little time.
Inventor breaks through conventional thought, nut portion be designed to round and smooth, without any force feature that can turn, but can handle
Screw is tightened smoothly, and therefore this case occurs.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the present invention provides a kind of antitheft inward turning bolt.
The technical scheme is that antitheft inward turning bolt, including nut portion, bolt body, threaded portion, tighten force section
Position；
Described nut portion diameter is bigger than bolt body diameter, and surrounding is smooth curved；
Described bolt body one end is connected with nut portion, and other end major part is provided with screw thread；
The lower end of described threaded portion is provided with tightens force application part, and tightens the external diameter of force application part than threaded portion diameter
Little.
Described force application part of tightening has various ways, and a kind of is to be provided with polygon projection in the lower end of threaded portion, and these are many
Limit shape is hexagon, square, triangle.
Another kind tightens force application part, is to be provided with polygon pit in the lower end of threaded portion, this polygon be hexagon,
Square, triangle.
The invention has the beneficial effects as follows: simple in construction, tighten conveniently from antitheft inward turning bolt end, smooth U.S. of nut portion
See, from nut portion cannot rotating bolt, prevent bolt from being turned on from outside by people.
Accompanying drawing explanation
Fig. 1 is the antitheft inward turning bolt schematic diagram of band projection；
Fig. 2 is the antitheft inward turning bolt schematic diagram of band pit；
Fig. 3 is the state diagram before screw tightening；
Fig. 4 is the state diagram after screw tightening.
Reference:
1, bolt body；2, nut portion；3, threaded portion；4, projection；41 pits；5 though-hole connections；6. screw connector.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is expanded on further.
Embodiment 1
As it is shown in figure 1, a kind of antitheft inward turning bolt, including nut portion 2, bolt body 1, threaded portion 3, tighten force section
Position；
Nut portion 2 diameter is bigger than bolt body 1 diameter, and nut portion 2 surrounding is smooth curved；
Described bolt body 1 one end is connected with nut portion 2, and other end major part is provided with threaded portion 3；
The lower end of described threaded portion 3 is provided with tightens force application part.In the present embodiment, described force application part of tightening is six
Dihedral projection.
Referring to Fig. 3, if though-hole connections 5 and screw connector 6 are clamped, first antitheft inward turning bolt through through hole
The through hole of connector 5, projection 4 through the screw of screw connector 6, arrives at the spiral shell of screw connector 6 in the front end of threaded portion 3
During bore edges, turn projection 4 with wrench, make the external screw thread of threaded portion 3 progressively screw in the screw of screw connector 6, until through hole
Connector 5 and screw connector 6 fit tightly, as shown in Figure 4.If feeling the need to, it is also possible to the exposed junction in threaded portion 3 is again
Screw on a standard component nut.
Because tightening screw from antitheft inward turning bolt end, it is exposed at nut portion 2 smooth and beautiful appearance on connector surface,
From nut portion 2 cannot rotating bolt, prevent bolt from being turned on from outside by people.
Embodiment 2
Referring to Fig. 2, the basic structure of antitheft inward turning bolt is identical with embodiment 1, is uniquely a difference in that at described screw thread
The lower end in portion 3 is not provided with polygon projection 4, and is provided with polygon pit 41 in the inside of threaded portion 3, by inserting with specific purpose tool
Enter pit 41 to tight a bolt.
Above-described embodiment is only the elaboration to the present invention, is not a kind of restriction to the present invention, all according to side of the present invention
The equivalent transformation that case is done, such as, be converted to square, triangle, N limit shape etc. hexagon, both fall within the protection of the present invention
Scope.
Claims (3)
1. an antitheft inward turning bolt, including nut portion, bolt body, threaded portion, tightens force application part；
Described nut portion diameter is bigger than bolt body diameter, and surrounding is smooth curved；Described bolt body one end and nut
Portion connects, and other end major part is provided with screw thread；The lower end of described threaded portion is provided with tightens force application part, and tightens force
The external diameter at position is less than threaded portion diameter.
One the most according to claim 1 antitheft inward turning bolt, it is characterised in that: described force application part of tightening is polygon
Shape projection, this polygon is hexagon, square, triangle.
One the most according to claim 1 antitheft inward turning bolt, it is characterised in that: described force application part of tightening is polygon
Shape pit, this polygon is hexagon, square, triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620534136.5U CN205715181U (en) | 2016-06-02 | 2016-06-02 | A kind of antitheft inward turning bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620534136.5U CN205715181U (en) | 2016-06-02 | 2016-06-02 | A kind of antitheft inward turning bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715181U true CN205715181U (en) | 2016-11-23 |
Family
ID=57300989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620534136.5U Expired - Fee Related CN205715181U (en) | 2016-06-02 | 2016-06-02 | A kind of antitheft inward turning bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654460A (en) * | 2017-09-15 | 2018-02-02 | 苏州嘉辉超声波科技有限公司 | The mounting structure of ultrasonic transducer |
-
2016
- 2016-06-02 CN CN201620534136.5U patent/CN205715181U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654460A (en) * | 2017-09-15 | 2018-02-02 | 苏州嘉辉超声波科技有限公司 | The mounting structure of ultrasonic transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |