CN202955101U - Anti-dismounting screw with breakable nut - Google Patents
Anti-dismounting screw with breakable nut Download PDFInfo
- Publication number
- CN202955101U CN202955101U CN 201220690606 CN201220690606U CN202955101U CN 202955101 U CN202955101 U CN 202955101U CN 201220690606 CN201220690606 CN 201220690606 CN 201220690606 U CN201220690606 U CN 201220690606U CN 202955101 U CN202955101 U CN 202955101U
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- Prior art keywords
- screw
- nut
- twisting
- contiguous block
- piece
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- 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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Abstract
The utility model discloses an anti-dismounting screw with a breakable nut. The anti-dismounting screw comprises a columnar screw body provided with external threads outside, wherein a nut is arranged on one side of the screw body in the length direction; the nut comprises a twisting block and a connecting block; one side of the connecting block is connected with the screw body; one side of the connecting block, deviated from the screw body, is connected with the twisting block; the outer diameter of the twisting block is gradually reduced in the direction the twisting block to the connecting block; the outer diameter of the connecting block is gradually reduced in the direction from the connecting block to the twisting block; one end with the smallest outer diameter of the connecting block and one end with the smallest outer diameter of the twisting block are connected with each other to form a twisting throat part of the screw; and one side, deviating from the connecting block, of the twisting block is provided with an installation groove. The nut of the screw disclosed by the utility model adopts a special structure, the twisting throat part with small diameter is arranged, and the twisting block can be twisted off from the connecting block to enable the screw to lose a dismountable installation part after the anti-dismounting screw rotates into a corresponding thread hole, so that the screw is prevented from being dismounted, the loss of internal parts of related devices is effectively reduced, and the screw is safe and reliable.
Description
Technical field
The utility model relates to the technical field of screw, is specifically related to the disassembling prevention screw that a kind of nut can be disconnected.
Background technique
Screw is a kind of threaded fastener with various structure shape heads, is widely used in all trades and professions.Screw often is used on the equipment that some indoor and outdoors are used.Existing screw head structure is generally cross recess or straight groove, can utilize the screw-driver commonly used that usually can buy on the market to be opened, the equipment that adopts these screws to be connected, usually by the lawless person, dismantled, make the inner components of equipment suffer to destroy, lose, make the equipment cisco unity malfunction.
Summary of the invention
The purpose of this utility model is: for the deficiencies in the prior art, the utility model provides the disassembling prevention screw that a kind of nut of Anti-dismantling of easy to operate, tamper reliable in function can be disconnected.
To achieve these goals, the utility model has adopted following technological scheme:
A kind of nut can be disconnected disassembling prevention screw, comprise columned screw body, be shaped with outside thread on described screw body, one side of screw body length direction is provided with nut, described nut comprises and twists off piece and contiguous block, one side of described contiguous block is connected with screw body, the side that contiguous block deviates from screw body with twist off piece and be connected, the described external diameter that twists off piece dwindles gradually by twisting off piece to contiguous block direction, the external diameter of described contiguous block is dwindled to twisting off the piece direction gradually by contiguous block, the external diameter smallest end of described contiguous block interconnects with the external diameter smallest end that twists off piece, form the throat that twists off of nut, twist off the side that piece deviates from contiguous block and be provided with mounting groove.
As preferably, describedly twist off piece and contiguous block all is round table-like, form the nut that is the hourglass shape.After adopting above-mentioned preferred version, the profile of the utility model nut is more attractive in appearance,
As preferably, described mounting groove is cross recess, and described cross recess comprises minute groove be interconnected, described minute groove and be provided with arc-shaped transitional surface between groove in adjacent minute.After adopting above-mentioned preferred version, the cross recessed surface of contact is larger, makes setting tool when screw is installed pair, the power that screw is applied is larger, and the power that screw applies is larger, simultaneously, after screw is screwed in to corresponding screw, can apply larger power the piece that twists off of nut is twisted off.
Nut of the present utility model can be disconnected the nut of disassembling prevention screw adopt special construction, have external diameter less twist off throat, after disassembling prevention screw is rotated into corresponding tapped hole, can from contiguous block, twist off twisting off piece, make screw lose the part that can remove and install, thereby prevent that screw is disassembled, effectively reduced the loss situation of component in relevant device, safe and reliable.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment;
The plan view that Fig. 2 is the utility model embodiment.
Embodiment
As Fig. 1, shown in Fig. 2, the embodiment of the present utility model disassembling prevention screw that specifically a kind of nut can be disconnected, comprise columned screw body 1, be shaped with outside thread 11 on screw body 1, one side of screw body 1 length direction is provided with nut 2, nut 2 comprises and twists off piece 21 and contiguous block 22, one side of contiguous block 22 is connected with screw body 1, the side that contiguous block 22 deviates from screw body 1 with twist off piece 21 and be connected, the external diameter that twists off piece 21 dwindles gradually by twisting off piece 21 to contiguous block 22 directions, the external diameter of contiguous block 22 is dwindled to twisting off piece 21 directions gradually by contiguous block 22, the external diameter smallest end of contiguous block 22 interconnects with the external diameter smallest end that twists off piece 21, what form nut 2 twists off throat 23, twist off piece 21 and contiguous block 22 and all be round table-like, formation is the nut 2 of hourglass shape.Twist off the side that piece 21 deviates from contiguous block 22 and be provided with mounting groove 211.Mounting groove 211 is cross recess, and cross recess comprises minute groove be interconnected, and divides groove and is provided with arc-shaped transitional surface 212 between groove in adjacent minute.
During work, screw body 1 is aimed to tapped hole, utilize the setting tool be complementary with cross recess, this screw body 1 is screwed in to tapped hole, screw in tapped hole, because screw body 1 is screw-thread fit with tapped hole, the power of needed screw-in is less, can not twist off twisting off throat 23, after screw body 1 is all screwed in, because screw body 1 is subject to the active force of tapped hole sidewall, can not move again, now continue again the rotation setting tool, the piece 21 that twists off of nut 2 can be twisted off, thereby prevent that screw body 1 is disassembled.
Claims (3)
1. the disassembling prevention screw that a nut can be disconnected, comprise columned screw body, be shaped with outside thread on described screw body, one side of screw body length direction is provided with nut, it is characterized in that: described nut comprises and twists off piece and contiguous block, one side of described contiguous block is connected with screw body, the side that contiguous block deviates from screw body with twist off piece and be connected, the described external diameter that twists off piece dwindles gradually by twisting off piece to contiguous block direction, the external diameter of described contiguous block is dwindled to twisting off the piece direction gradually by contiguous block, the external diameter smallest end of described contiguous block interconnects with the external diameter smallest end that twists off piece, form the throat that twists off of nut, twist off the side that piece deviates from contiguous block and be provided with mounting groove.
2. the disassembling prevention screw that nut according to claim 1 can be disconnected is characterized in that: describedly twist off piece and contiguous block all is round table-like, form the nut that is the hourglass shape.
3. the disassembling prevention screw that nut according to claim 1 can be disconnected is characterized in that: described mounting groove is cross recess, and described cross recess comprises minute groove be interconnected, described minute groove and be provided with arc-shaped transitional surface between groove in adjacent minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690606 CN202955101U (en) | 2012-12-13 | 2012-12-13 | Anti-dismounting screw with breakable nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690606 CN202955101U (en) | 2012-12-13 | 2012-12-13 | Anti-dismounting screw with breakable nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955101U true CN202955101U (en) | 2013-05-29 |
Family
ID=48460676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690606 Expired - Fee Related CN202955101U (en) | 2012-12-13 | 2012-12-13 | Anti-dismounting screw with breakable nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955101U (en) |
-
2012
- 2012-12-13 CN CN 201220690606 patent/CN202955101U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |