CN203272397U - Anti-dismounting screw - Google Patents
Anti-dismounting screw Download PDFInfo
- Publication number
- CN203272397U CN203272397U CN 201320335989 CN201320335989U CN203272397U CN 203272397 U CN203272397 U CN 203272397U CN 201320335989 CN201320335989 CN 201320335989 CN 201320335989 U CN201320335989 U CN 201320335989U CN 203272397 U CN203272397 U CN 203272397U
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- screw
- fan
- shaped
- domatic
- screw body
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-dismounting screw. The anti-dismounting screw comprises a screw body and a screw head separated from the screw body, wherein two centrally symmetric fan-shaped slope gaps are formed at one end, matched with the screw head, of the screw body; one sides with lower slopes of the fan-shaped slope gaps are close to the screwing direction of the screw; a circular ring with the inner diameter matched with the outer diameter of the screw body is arranged at one end, matched with the screw body, of the screw head; fan-shaped slope bulges corresponding to the fan-shaped slope gaps are arranged in the circular ring; and an opening for screwing is formed in the other end of the screw head. The anti-dismounting screw has the advantages that after being mounted, the anti-dismounting screw is difficult to dismount, meanwhile, the design and machining difficulties are low, the anti-dismounting screw is neat and attractive, and the wasting of resources and the environmental pollution can be avoided.
Description
Technical field
The utility model relates to a kind of screw, is specifically related to a kind of disassembling prevention screw.
Background technique
Screw is widely used in the connection of equipment as a kind of screw threads for fastening connecting piece.In the prior art, screw is structure as a whole mostly, screw head is provided with straight groove or cross recess, utilize general flathead screwdriver or cross head driver to screw or to dismantle, therefore, adopt the equipment that traditional screw connects easily to be dismantled, steal or destroy, therefore by the lawless person, at some in particular cases, need to adopt the screw of Anti-dismantling that equipment is fixed.
Chinese utility model patent 201220690606.9 discloses the disassembling prevention screw that a kind of nut can break, 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.This disassembling prevention screw unloads after screw threads changes respective screw hole over to, can twist off from contiguous block twisting off piece, make screw lose detachable mounting portion, thereby prevent that screw is disassembled, effectively reduced the loss situation of component in relevant device, safe and reliable, but still have a following defective: 1, design, difficulty of processing are larger, need to satisfy the intensity that screw screws, consider again the intensity that can be twisted off; 2, to twist off ear end face irregular, not attractive in appearance for screw, also easily by corrosion; 3, the screw head of turning round causes the wasting of resources, can cause environmental pollution as not reclaiming also.
For defects, be necessary to develop a kind of disassembling prevention screw, after being installed, it is difficult for being disassembled, and design simultaneously, difficulty of processing are low, neat appearance and can not cause the wasting of resources and environmental pollution after installing.
The model utility content
The utility model discloses a kind of disassembling prevention screw, be difficult for being disassembled after it is installed, design simultaneously, difficulty of processing are low, neat appearance and can not cause the wasting of resources and environmental pollution after installing.
The technical solution of the utility model is as follows:
A kind of disassembling prevention screw, the screw body and the screw head that comprise separation, the end that screw body coordinates with screw head is provided with two centrosymmetric fan-shaped domatic breach, the domatic lower side of fan-shaped domatic breach is near the direction that screws of screw, the end that screw head coordinates with screw body is provided with the annulus of the external diameter coupling of internal diameter and screw body, annulus inside is provided with the fan-shaped domatic projection corresponding with fan-shaped domatic breach, and the other end of screw head is provided be used to the opening that screws.
The mode that the screw body of disassembling prevention screw of the present utility model and screw head adopt fan-shaped domatic breach and fan-shaped domatic projection to coordinate is transmitted clamp load torque, the direction that a domatic lower side screws near screw, make the moment can only unidirectional delivery, if counterrotating, screw head separates with screw body, thereby prevents that screw is disassembled; Its principle and simple in structure, the transmission of moment is reliable, thereby has reduced the difficulty of design and processing; Its interchangeability is good simultaneously, and minimum of a plurality of screw bodies of same specification need to be equipped with a screw head, install also recyclable recycling of rear screw head, have saved resource, can not cause environmental pollution simultaneously; In addition, rule section invariably after screw body is installed, neat appearance.
Description of drawings
Fig. 1 is the utility model embodiment's decomposition texture schematic diagram;
Fig. 2 is the assembly structure schematic diagram of Fig. 1;
Fig. 3 is the structural representation of screw head in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
As shown in Figure 1 to Figure 3, disassembling prevention screw of the present utility model comprises screw body 1 and screw head 3, the end that screw body 1 coordinates with screw head 3 is provided with two centrosymmetric fan-shaped domatic breach 2, the domatic lower side of fan-shaped domatic breach 2 is near the direction that screws of screw, the end that screw head 3 coordinates with screw body 1 is provided with the annulus 5 of the external diameter coupling of internal diameter and screw body, be provided with corresponding with fan-shaped domatic breach 2 fan-shaped domatic protrudingly 6 in annulus 5, the other end of screw head is provided be used to the opening 4 that screws;
The screw body 1 of disassembling prevention screw of the present utility model and screw head 3 adopt fan-shaped domatic breach 2 and fan-shaped domatic protruding 6 modes that coordinate to transmit clamp load torque, the direction that the domatic lower side of fan-shaped domatic breach 2 screws near screw, make the moment can only unidirectional delivery, if counterrotating, screw head 3 separates with screw body 1, thereby prevents that screw is disassembled; Its principle and simple in structure, the transmission of moment is reliable, thereby has reduced the difficulty of design and processing; Its interchangeability is good simultaneously, and minimum of a plurality of screw bodies 1 of same specification need to be equipped with a screw head 3, install also recyclable recycling of rear screw head 3, have saved resource, can not cause environmental pollution simultaneously; In addition, rule section invariably after screw body 1 is installed, neat appearance.
Preferably, described opening 4 is in-line opening or cross opening, so that use common screw-driver to screw;
Preferably, described fan-shaped domatic breach 2 and fan-shaped domatic protruding 6 fan-shaped central angle are an angle of 90 degrees, to guarantee that moment is even, the transmission of balance;
Preferably, the dihedral angle of the end face of the fan-shaped domatic and screw body 1 of described fan-shaped domatic breach 2 is less than 30 degree, and the resistance that is subject to when making screw head to the direction rotation that unscrews is less, strengthens the non-dismountable property of screw body 1.
Above-described embodiment of the present invention does not consist of the restriction to protection domain of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (4)
1. disassembling prevention screw, it is characterized in that: the screw body and the screw head that comprise separation, the end that screw body coordinates with screw head is provided with two centrosymmetric fan-shaped domatic breach, the domatic lower side of fan-shaped domatic breach is near the direction that screws of screw, the end that screw head coordinates with screw body is provided with the annulus of the external diameter coupling of internal diameter and screw body, annulus inside is provided with the fan-shaped domatic projection corresponding with fan-shaped domatic breach, and the other end of screw head is provided be used to the opening that screws.
2. disassembling prevention screw as claimed in claim 1, it is characterized in that: described opening is in-line opening or cross opening.
3. disassembling prevention screw as claimed in claim 1 or 2, it is characterized in that: the fan-shaped central angle of described fan-shaped domatic breach and fan-shaped domatic projection is an angle of 90 degrees.
4. disassembling prevention screw as claimed in claim 1 or 2 is characterized in that: the dihedral angle of the end face of the fan-shaped domatic and screw body of described fan-shaped domatic breach is less than 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320335989 CN203272397U (en) | 2013-06-13 | 2013-06-13 | Anti-dismounting screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320335989 CN203272397U (en) | 2013-06-13 | 2013-06-13 | Anti-dismounting screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272397U true CN203272397U (en) | 2013-11-06 |
Family
ID=49502819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320335989 Expired - Fee Related CN203272397U (en) | 2013-06-13 | 2013-06-13 | Anti-dismounting screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272397U (en) |
-
2013
- 2013-06-13 CN CN 201320335989 patent/CN203272397U/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: 20131106 Termination date: 20140613 |
|
| EXPY | Termination of patent right or utility model |