CN209838897U - Special self-tapping screw - Google Patents
Special self-tapping screw Download PDFInfo
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- CN209838897U CN209838897U CN201821894171.3U CN201821894171U CN209838897U CN 209838897 U CN209838897 U CN 209838897U CN 201821894171 U CN201821894171 U CN 201821894171U CN 209838897 U CN209838897 U CN 209838897U
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- screw
- thread
- screw rod
- jiaos
- screwhead
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Abstract
The utility model discloses a special self tapping screw, including screwhead and screw rod, characterized by: middle part is equipped with 45 external screw threads on the screw rod, the afterbody is equipped with 45 and attacks the screw thread, 45 external screw thread is 34 jiaos towards the one side of screwhead, is 11 jiaos towards the one side of screw rod tip, 45 attack the screw thread and be 11 jiaos towards the one side of screwhead, be 34 jiaos towards the one side of screw rod tip. The angle of 34 degrees and the angle of 11 degrees of the 45-degree external thread teeth and the 45-degree attack thread teeth of the special self-tapping screw are opposite in arrangement, so that the meshing length between the screw and the thin plate is effectively increased, and the connecting strength is further increased.
Description
Technical Field
The utility model relates to a special self-tapping screw.
Background
When the existing tapping screw is matched with a thin plate, the engagement length of the existing tapping screw and the thin plate is short, and the bonding strength is low.
Disclosure of Invention
In view of the deficiencies of the background art, the technical problem to be solved by the present invention is to provide a special tapping screw capable of increasing the engagement length.
Therefore, the utility model discloses an adopt following technical scheme to realize:
the special self-tapping screw comprises a screw head and a screw rod, and is characterized in that: middle part is equipped with 45 external screw threads on the screw rod, the afterbody is equipped with 45 and attacks the screw thread, 45 external screw thread is 34 jiaos towards the one side of screwhead, is 11 jiaos towards the one side of screw rod tip, 45 attack the screw thread and be 11 jiaos towards the one side of screwhead, be 34 jiaos towards the one side of screw rod tip.
The errors of the 34-degree angle and the 11-degree angle of the 45-degree external thread teeth and the 45-degree attack thread teeth are between plus or minus 2 degrees.
After the technical scheme is adopted, the 34-degree angle and the 11-degree angle of the 45-degree external thread teeth and the 45-degree attack thread teeth are reversely arranged, so that the meshing length between the screw and the thin plate is effectively increased, and the connecting strength is further increased.
Drawings
The utility model discloses there is following figure:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
Referring to the above-mentioned attached drawings, the utility model provides a special self-tapping screw includes screwhead 1 and screw rod 2, the middle part is equipped with 45 external screw thread 3 on the screw rod 2, the afterbody is equipped with 45 and attacks thread 4, 45 external screw thread 3 is 34 jiaos towards the one side of screwhead, be 11 jiaos towards the one side of screw rod tip, 45 attack thread 4 and be 11 jiaos towards the one side of screwhead, be 34 jiaos towards the one side of screw rod tip, 45 external screw thread 3 and 45 attack 34 jiaos and 11 jiaos error of thread 4 between positive and negative 2.
In the embodiment, the 34-degree angle and the 11-degree angle of the 45-degree external thread teeth 3 and the 45-degree attack thread teeth 4 are oppositely arranged, so that the meshing length between the screw and the thin plate is effectively increased, and the connecting strength is further increased.
Claims (2)
1. The special self-tapping screw comprises a screw head and a screw rod, and is characterized in that: middle part is equipped with 45 external screw threads on the screw rod, the afterbody is equipped with 45 and attacks the screw thread, 45 external screw thread is 34 jiaos towards the one side of screwhead, is 11 jiaos towards the one side of screw rod tip, 45 attack the screw thread and be 11 jiaos towards the one side of screwhead, be 34 jiaos towards the one side of screw rod tip.
2. A special self-tapping screw as defined in claim 1, wherein: the errors of the 34-degree angle and the 11-degree angle of the 45-degree external thread teeth and the 45-degree attack thread teeth are between plus or minus 2 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821894171.3U CN209838897U (en) | 2018-11-17 | 2018-11-17 | Special self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821894171.3U CN209838897U (en) | 2018-11-17 | 2018-11-17 | Special self-tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209838897U true CN209838897U (en) | 2019-12-24 |
Family
ID=68888538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821894171.3U Active CN209838897U (en) | 2018-11-17 | 2018-11-17 | Special self-tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209838897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116517941A (en) * | 2023-06-28 | 2023-08-01 | 沈阳市黎阳机械构件制造有限公司 | 45-degree self-tapping thread, composite screw sleeve and preparation and use methods of screw sleeve |
-
2018
- 2018-11-17 CN CN201821894171.3U patent/CN209838897U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116517941A (en) * | 2023-06-28 | 2023-08-01 | 沈阳市黎阳机械构件制造有限公司 | 45-degree self-tapping thread, composite screw sleeve and preparation and use methods of screw sleeve |
| CN116517941B (en) * | 2023-06-28 | 2023-10-13 | 沈阳市黎阳机械构件制造有限公司 | 45-degree self-tapping thread, composite screw sleeve and preparation and use methods of screw sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 611, Dingxiang Road, Wenzhou Economic and Technological Development Zone, Zhejiang 325000 Patentee after: Zhejiang Huayuan Automobile Technology Co.,Ltd. Address before: No. 611, Dingxiang Road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: ZHEJIANG HUAYUAN AUTOMOBILE PARTS Co.,Ltd. |
|
| CP03 | Change of name, title or address |