CN201925301U - Improved self-tapping screw - Google Patents
Improved self-tapping screw Download PDFInfo
- Publication number
- CN201925301U CN201925301U CN2011200784627U CN201120078462U CN201925301U CN 201925301 U CN201925301 U CN 201925301U CN 2011200784627 U CN2011200784627 U CN 2011200784627U CN 201120078462 U CN201120078462 U CN 201120078462U CN 201925301 U CN201925301 U CN 201925301U
- Authority
- CN
- China
- Prior art keywords
- tapping screw
- self tapping
- screw
- conical section
- nut
- 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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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model discloses an improved self-tapping screw, which comprises a nut and a screw stem. The screw stem is provided with a thread, a washer is formed at the inner end of the nut, antiskid teeth are formed on the washer, and a conical section is arranged at the head of the screw stem. The improved self-tapping screw has better anti-loosening effect, is quite laborsaving when in tapping, and has better guiding and positioning effect.
Description
Technical field
The utility model relates to mechanical connection spare technical field, especially relates to a kind of improved self tapping screw.
Background technique
Self tapping screw is a kind of common mechanical connection spare, is used for connecting sheetmetal, light alloy and plastic part etc. more, is coupled and need not machining screw in advance on the part, during connection, by the direct tap out of the screw thread on the screw rod.
Present seen self tapping screw, and employed gasket surface is smooth, the phenomenon that gets loose occurs because of vibrations easily after screw tightens; In addition, relatively require great effort during tapping, when connecting in the hole of punching out in advance on the screw head insertion connecting piece, guiding and locating effect are also undesirable, make screw produce off-set phenomenon easily.Therefore be necessary existing self tapping screw is improved.
The model utility content
At the deficiency that above-mentioned prior art exists, the purpose of this utility model provides a kind of improved self tapping screw, and it has anti-loose preferably effect, and is more laborsaving during tapping, and has guiding and locating effect preferably.
To achieve these goals, the technological scheme that the utility model adopted is: improved self tapping screw, comprise nut and screw rod, and screw rod is provided with screw thread, and the inner of described nut forms pad, forms slideproof tooth on the pad, and the head of screw rod has conical section.
The sectional shape of described conical section is a polygonal.
The sectional shape of described conical section is for roughly triangular in shape.
The screw thread of described conical section is provided with the disconnection groove.
Described disconnection groove evenly distributes around circumferencial direction.
Described pad is circular, and slideproof tooth evenly distributes around circumferencial direction.
Described nut is a hexagon.
The outer end of described nut forms cross recess.
After adopting said structure, the utility model is compared the advantage that is had with prior art and is: 1, form slideproof tooth on the pad, be not easy to occur the phenomenon that gets loose after screw tightens.2, the head of screw rod has conical section, and the screw thread of conical section is provided with the disconnection groove, and the sectional shape of conical section is a polygonal or roughly triangular in shape, and is more laborsaving during tapping like this, and has guiding and locating effect preferably, can improve efficiency of assembling.3, the outer end of nut forms cross recess, has brought convenience to assembling.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 is the utility model embodiment one a schematic perspective view;
Fig. 2 is the utility model embodiment two a schematic perspective view;
Fig. 3 is the utility model embodiment three a schematic perspective view;
Fig. 4 is the floor map of the utility model nut.
Among the figure: nut 10; Cross recess 11; Screw rod 20; Conical section 21; Disconnect groove 22; Pad 30; Slideproof tooth 31.
Embodiment
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
Embodiment one, sees Fig. 1 and shown in Figure 4: improved self tapping screw, comprise nut 10 and screw rod 20, and nut 10 is a hexagon, its outer end forms cross recess 11; Screw rod 20 is provided with screw thread, and the inner of nut 10 forms circular gasket 30, forms on the pad 30 around the equally distributed slideproof tooth 31 of circumferencial direction.The head of screw rod 20 has conical section 21, and the sectional shape of conical section 21 is a nonagon.
Embodiment two, see Fig. 2 and shown in Figure 4: the sectional shape of conical section 21 is for roughly triangular in shape.All the other are with embodiment one.
Embodiment three, see Fig. 3 and shown in Figure 4: the sectional shape of conical section 21 is for circular, and the screw thread of conical section 21 is provided with and disconnects groove 22, disconnects groove 22 and evenly distributes around circumferencial direction.All the other are with embodiment one.
When the utility model uses, the conical section 21 of screw rod 20 heads is inserted in the hole of going out in advance on the connecting piece, use spanner or Phillips screwdriver to rotate the utility model then, can compare directly tapping in the hole of labour-saving, make that forcing tapping and product to connect once finishes, and anti-loose effective, connect firmly, can reach the effect that assemble in no gap.
Claims (8)
1. improved self tapping screw, comprise nut (10) and screw rod (20), screw rod (20) is provided with screw thread, it is characterized in that: the inner of described nut (10) forms pad (30), form slideproof tooth (31) on the pad (30), the head of screw rod (20) has conical section (21).
2. self tapping screw according to claim 1 is characterized in that: the sectional shape of described conical section (21) is a polygonal.
3. self tapping screw according to claim 1 is characterized in that: the sectional shape of described conical section (21) is for roughly triangular in shape.
4. self tapping screw according to claim 1 is characterized in that: the screw thread of described conical section (21) is provided with and disconnects groove (22).
5. self tapping screw according to claim 4 is characterized in that: described disconnection groove (22) evenly distributes around circumferencial direction.
6. self tapping screw according to claim 1 is characterized in that: described pad (30) is for circular, and slideproof tooth (31) evenly distributes around circumferencial direction.
7. according to each described self tapping screw in the claim 1 to 6, it is characterized in that: described nut (10) is a hexagon.
8. self tapping screw according to claim 7 is characterized in that: the outer end of described nut (10) forms cross recess (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200784627U CN201925301U (en) | 2011-03-23 | 2011-03-23 | Improved self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200784627U CN201925301U (en) | 2011-03-23 | 2011-03-23 | Improved self-tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925301U true CN201925301U (en) | 2011-08-10 |
Family
ID=44429151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200784627U Expired - Fee Related CN201925301U (en) | 2011-03-23 | 2011-03-23 | Improved self-tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451674A (en) * | 2013-06-27 | 2016-03-30 | 蛇牌股份公司 | Out-of-round pedicle screw |
-
2011
- 2011-03-23 CN CN2011200784627U patent/CN201925301U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451674A (en) * | 2013-06-27 | 2016-03-30 | 蛇牌股份公司 | Out-of-round pedicle screw |
| CN105451674B (en) * | 2013-06-27 | 2018-04-20 | 蛇牌股份公司 | Lose cone pedicle screw |
| US10413343B2 (en) | 2013-06-27 | 2019-09-17 | Aesculap Ag | Out-of-round pedicle screw |
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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: 20110810 Termination date: 20160323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |