CN208040877U - Tamper proof screws with internal thread linkage function - Google Patents
Tamper proof screws with internal thread linkage function Download PDFInfo
- Publication number
- CN208040877U CN208040877U CN201721876763.8U CN201721876763U CN208040877U CN 208040877 U CN208040877 U CN 208040877U CN 201721876763 U CN201721876763 U CN 201721876763U CN 208040877 U CN208040877 U CN 208040877U
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- section
- screw
- outer diameter
- internal thread
- annular wall
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Abstract
The utility model discloses a kind of tamper proof screws with internal thread linkage function, includes metal master, and metal master includes to be sequentially connected and the first screw terminal of coaxial center line, cylindrical shearind section, frustum section, the first external thread section；The gradually big setting from top to bottom of frustum section, the upper end outer diameter of frustum section is equal with the cylindrical outer diameter of shearind section, and the lower end outer diameter of frustum section is equal with the outer diameter of the first external thread section, and the outer diameter of the first screw terminal is more than the outer diameter of the first external thread section；The lower end of external thread section is concave up to be equipped with internal thread connecting hole；Thereby, pass through the design of cylindrical shearind section so that it can easily twist into two parts the first screw terminal after being screwed into tool, so that joint is close, it is antitheft to have achieved the purpose that tamper is prevented unloading；And the design by internal thread connecting hole, so that the function that it has the connection of second of fastened by screw is preferably avoided the phenomenon that screw easily loosens to enhance the stability connected between structure.
Description
Technical field
The utility model is related to screw field technologies, refer in particular to a kind of tamper proof screws with internal thread linkage function.
Background technology
Some are chronically at outdoor mechanical equipment, stolen situation usually occur, and main cause is an exposure to outside
Screw be easy to be disassembled, therefore, tamper proof screws occur therewith, and tamper proof screws in the prior art are shearind section mostly and outer
Thread segment combine structure realize tamper, though having achieved the purpose that tamper, stable connection is not good enough, for some often by
To the equipment of vibration effect, easily there is the phenomenon that loosened screw.
Therefore, it is necessary to work out a kind of new technology to solve the above problems.
Utility model content
In view of this, the utility model is in view of the existing deficiencies of the prior art, main purpose is to provide a kind of with interior
The tamper proof screws of function are threadedly coupled, smart structural design is reasonable, has achieved the purpose that tamper is anti-and has unloaded antitheft, has enhanced connection
Stability, avoid the phenomenon that screw easily loosens well.
To achieve the above object, the utility model is using following technical solution：
A kind of tamper proof screws with internal thread linkage function, include metal master, the metal master include according to
First screw terminal of secondary connection and coaxial center line, cylindrical shearind section, frustum section, the first external thread section；The frustum section
Gradually big setting from top to bottom, the upper end outer diameter of the frustum section is equal with the cylindrical outer diameter of shearind section, under the frustum section
Hold outer diameter equal with the outer diameter of the first external thread section, the outer diameter of first screw terminal is more than the outer diameter of the first external thread section；Institute
The lower end for stating external thread section is concave up equipped with internal thread connecting hole.
As a preferred embodiment, it is stretched into from bottom to top in the internal thread connecting hole and is fitted with reinforcing screw；It is described to add
Gu there is screw the second external thread section, the second screw terminal set gradually from top to bottom, second external thread section to adapt to interior
In threaded connection hole.
As a preferred embodiment, all side surfaces of second screw terminal are recessed with upper end annular groove, lower end annular
Groove, the upper end annular groove penetrate through the top and periphery of the second screw terminal, and the lower end annular groove penetrates through the second screw
The bottom end and periphery of head；The periphery of second screw terminal is arranged with elastic washer, and the section of the elastic washer is C-shaped, institute
Stating elastic washer, there is top annular wall, bottom end annular wall and side annular wall, the side annular wall to be connected to upper end annular
Between wall, lower end annular wall, the upper end annular wall adapts in the annular groove of upper end, and the lower end annular wall adapts to lower end
In annular groove, the side annular wall is placed on all side surfaces of the second screw terminal.
The utility model has clear advantage and advantageous effect compared with prior art, specifically, by above-mentioned technology
Scheme is it is found that it mainly passes through the design of cylindrical shearind section so that it can be easily by the first screw terminal after being screwed into tool
It twists into two parts, so that joint is close, it is antitheft to have achieved the purpose that tamper is prevented unloading；And the design by internal thread connecting hole,
Its function of having the connection of second of fastened by screw is set preferably to be avoided to enhance the stability connected between structure
The phenomenon that screw easily loosens.
More clearly to illustrate the structure feature, technological means and its specific purposes and work(reached of the utility model
Can, the utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the general configuration schematic diagram of the embodiment of the utility model；
Fig. 2 is the schematic cross-section of the embodiment of the utility model；
Fig. 3 is the part-structure schematic cross-section of the embodiment of the utility model.
Description of drawing identification：
10, metal master 11, the first screw terminal
12, cylindrical shearind section 13, frustum section
14, the first external thread section 15, internal thread connecting hole
20, screw 21, the second external thread section are reinforced
22, the second screw terminal 221, upper end annular groove
222, lower end annular groove 30, elastic washer
31, top annular wall 32, bottom end annular wall
33, side annular wall.
Specific implementation mode
It please refers to shown in Fig. 1 to Fig. 3, that show the concrete structures of the embodiment of the utility model.
A kind of tamper proof screws with internal thread linkage function include metal master 10, and the metal master 10 includes
It is sequentially connected and the first screw terminal 11 of coaxial center line, cylindrical shearind section 12, frustum section 13, the first external thread section 14；
The gradually big setting from top to bottom of the frustum section 13, the outer diameter phase of the upper end outer diameter of the frustum section 13 and cylindrical shearind section 12
Deng the lower end outer diameter of the frustum section 13 is equal with the outer diameter of the first external thread section 14, and the outer diameter of first screw terminal 11 is big
In the outer diameter of the first external thread section 14；The lower end of the external thread section is concave up to be equipped with internal thread connecting hole 15；The internal thread
It stretches into be fitted with from bottom to top in connecting hole 15 and reinforces screw 20；The screw 20 of reinforcing has the set gradually from top to bottom
Two external thread sections 21, the second screw terminal 22, second external thread section 21 adapt in internal thread connecting hole 15.Herein, it uses
When, easily cap head can be twisted into two parts after being screwed into tool, to make joint more closely see from the outside, under normal circumstances without
Method is dismantled, and prevents unloading anti-theft function so as to play good tamper, and in terms of inside, pass through and reinforces screw 20 and internal thread
The adaptation of connecting hole 15 can further reinforce connection, the phenomenon that avoid screw from easily loosening.
In addition, in this present embodiment, all side surfaces of second screw terminal 22 be recessed with upper end annular groove 221, under
End ring connected in star 222, the upper end annular groove 221 penetrate through the top and periphery of the second screw terminal 22, and the lower end annular is recessed
Slot 222 penetrates through the bottom end and periphery of the second screw terminal 22；The periphery of second screw terminal 22 is arranged with elastic washer 30, described
The section of elastic washer 30 is C-shaped, and the elastic washer 30 has top annular wall 31, bottom end annular wall 32 and side annular wall
33, the side annular wall 33 is connected between upper end annular wall, lower end annular wall, and the upper end annular wall adapts to top ring
In connected in star 221, the lower end annular wall adapts in lower end annular groove 222, and the side annular wall 33 is placed on the second spiral shell
All side surfaces of silk head 22.Herein, which is conducive to reinforce the fastening between screw 20 and tamper proof screws, while energy
It prevents from reinforcing and touch on the important component of equipment between screw 20, in case the surface to some important components generates damage.
In conclusion the design focal point of the utility model is, mainly pass through the design of cylindrical shearind section so that
It can easily twist into two parts the first screw terminal after being screwed into tool so that joint is close, reached tamper it is anti-unload it is antitheft
Purpose；And the design by internal thread connecting hole, so that it is had the function of second of fastened by screw connection, to enhance
The stability connected between structure, preferably avoids the phenomenon that screw easily loosens.
The above descriptions are merely preferred embodiments of the present invention, not makees to the technical scope of the utility model
Any restrictions, therefore any trickle amendment made by the above technical examples according to the technical essence of the present invention, equivalent change
Change and modify, is still within the scope of the technical solutions of the present invention.
Claims (3)
1. a kind of tamper proof screws with internal thread linkage function, it is characterised in that：Include metal master, the metal master
Include to be sequentially connected and the first screw terminal of coaxial center line, cylindrical shearind section, frustum section, the first external thread section；Institute
The gradually big setting from top to bottom of frustum section is stated, the upper end outer diameter of the frustum section is equal with the cylindrical outer diameter of shearind section, the cone
The lower end outer diameter of platform section is equal with the outer diameter of the first external thread section, and the outer diameter of first screw terminal is more than the first external thread section
Outer diameter；The lower end of the external thread section is concave up to be equipped with internal thread connecting hole.
2. the tamper proof screws according to claim 1 with internal thread linkage function, it is characterised in that：The internal thread connects
It connects to stretch into from bottom to top in hole and is fitted with reinforcing screw；The screw of reinforcing has the second external screw thread set gradually from top to bottom
Section, the second screw terminal, second external thread section adapt in internal thread connecting hole.
3. the tamper proof screws according to claim 2 with internal thread linkage function, it is characterised in that：Second screw
All side surfaces of head are recessed with upper end annular groove, lower end annular groove, and the upper end annular groove penetrates through the second screw terminal
Top and periphery, the lower end annular groove penetrate through the bottom end and periphery of the second screw terminal；The periphery of second screw terminal covers
Equipped with elastic washer, the section of the elastic washer is C-shaped, the elastic washer have top annular wall, bottom end annular wall and
Side annular wall, the side annular wall are connected between upper end annular wall, lower end annular wall, and the upper end annular wall adapts to
In the annular groove of upper end, the lower end annular wall adapts in the annular groove of lower end, and the side annular wall is placed on the second screw
All side surfaces of head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876763.8U CN208040877U (en) | 2017-12-28 | 2017-12-28 | Tamper proof screws with internal thread linkage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876763.8U CN208040877U (en) | 2017-12-28 | 2017-12-28 | Tamper proof screws with internal thread linkage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208040877U true CN208040877U (en) | 2018-11-02 |
Family
ID=63955500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721876763.8U Expired - Fee Related CN208040877U (en) | 2017-12-28 | 2017-12-28 | Tamper proof screws with internal thread linkage function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208040877U (en) |
-
2017
- 2017-12-28 CN CN201721876763.8U patent/CN208040877U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20191228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |