CN215257252U - Deformation-preventing high-strength drill tail screw - Google Patents
Deformation-preventing high-strength drill tail screw Download PDFInfo
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- CN215257252U CN215257252U CN202120158192.4U CN202120158192U CN215257252U CN 215257252 U CN215257252 U CN 215257252U CN 202120158192 U CN202120158192 U CN 202120158192U CN 215257252 U CN215257252 U CN 215257252U
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- screw
- hole
- drill tail
- screw rod
- reinforcing
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Abstract
The utility model discloses an anti-deformation high-strength drill tail screw, including spiral shell head and screw rod, be equipped with the external screw thread on the outer wall of screw rod, the top of screw rod is fixed in the bottom surface central authorities of spiral shell head and the bottom is equipped with self-tapping drill bit, still be equipped with the enhancement plug in the screw rod, be equipped with the bulge that a plurality of encircleed the axis setting on the outer wall of enhancement plug, the body and the bulge formula structure as an organic whole of enhancement plug, the central authorities of screw rod are equipped with the through-hole that suits with the body of enhancement plug and the shape of bulge, it fixes among the through-hole with one heart to strengthen the plug. The utility model effectively increases the strength of the screw and avoids the screw from deforming under pressure in the use process by arranging the reinforcing core rod in the screw as the supporting framework; through set up the bulge that a plurality of encircleed the axis setting on the outer wall at the enhancement plug, further improve the deformation effect of preapring for an unfavorable turn of events of screw.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a technical field of screw, especially a prevent technical field of deformation high strength brill tail screw.
[ background of the invention ]
The self-tapping screw is a screw with a self-tapping drill bit arranged at the bottom end of a screw rod. The self-tapping drill bit of the self-tapping screw is not needed to be processed in an auxiliary mode, and the self-tapping screw can be used for directly drilling, tapping and locking a base material, so that the construction time can be greatly saved. However, the existing self-drilling screw has low strength and is easy to deform, and is not suitable for being installed in a device which needs to be kept to run safely, stably and uninterruptedly in a severe working environment.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, providing a prevent deformation high strength brill tail screw, can effectively increase the intensity of screw, avoid the screw to be compressed and warp in the use.
In order to achieve the purpose, the utility model provides an anti-deformation high-strength drill tail screw, including spiral shell head and screw rod, be equipped with the external screw thread on the outer wall of screw rod, the top of screw rod is fixed in the bottom surface central authorities of spiral shell head and the bottom is equipped with self-tapping drill bit, still be equipped with the enhancement plug in the screw rod.
Preferably, the outer wall of the reinforcing mandrel is provided with a plurality of protruding portions arranged around the central axis, the body of the reinforcing mandrel and the protruding portions are of an integrated structure, the center of the screw is provided with a through hole matched with the shape of the body of the reinforcing mandrel and the shape of the protruding portions, and the reinforcing mandrel is concentrically fixed in the through hole.
Preferably, the cross section of the protruding part is in a straight strip shape or a horn shape, and when the protruding part is in the horn shape, the end with the larger diameter of the protruding part is connected with the body of the reinforcing core rod.
Preferably, corners of the hole wall of the through hole are rounded corners.
Preferably, a reinforcing wire mesh is attached to an inner wall of the through hole.
Preferably, the through hole extends upwards into the screw head, and the height of the reinforcing mandrel and the height of the wire mesh are consistent with the height of the through hole.
Preferably, the through hole penetrates through the top surface of the screw head, and the through hole does not penetrate through the bottom surface of the screw rod.
Preferably, the reinforcing mandrel is a titanium alloy mandrel.
The utility model has the advantages that: the utility model effectively increases the strength of the screw and avoids the screw from deforming under pressure in the use process by arranging the reinforcing core rod in the screw as the supporting framework; the outer wall of the reinforcing core rod is provided with a plurality of convex parts arranged around the central axis, so that the deformation prevention effect of the screw is further improved; the corner of the hole wall of the through hole is a round angle, so that the probability of generating cracks is reduced; the strength of the hole wall of the through hole is further improved by sticking a layer of reinforced metal wire mesh on the inner wall of the through hole.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of an anti-deformation high-strength self-drilling screw of the present invention;
FIG. 2 is a schematic cross-sectional view of a screw according to the first embodiment;
FIG. 3 is a schematic cross-sectional view of a screw according to the second embodiment.
In the figure: 1-screw head, 2-screw head, 21-external screw thread, 22-self-tapping drill bit, 3-reinforced core rod, 31-bulge and 4-reinforced metal wire mesh.
[ detailed description ] embodiments
The first embodiment is as follows:
referring to fig. 1 and 2, the utility model relates to an anti-deformation high-strength drill tail screw, including spiral shell head 1 and screw rod 2, be equipped with external screw thread 21 on the outer wall of screw rod 2, the top of screw rod 2 is fixed in the bottom surface central authorities of spiral shell head 1 and the bottom is equipped with self-tapping drill bit 22, still be equipped with in the screw rod 2 and strengthen plug 3.
The outer wall of the reinforcing mandrel 3 is provided with a plurality of protruding parts 31 arranged around the central axis, the body of the reinforcing mandrel 3 and the protruding parts 31 are of an integrated structure, the center of the screw rod 2 is provided with a through hole matched with the body of the reinforcing mandrel 3 and the protruding parts 31 in shape, and the reinforcing mandrel 3 is concentrically fixed in the through hole.
The cross section of the protruding part 31 is a straight bar.
And corners of the hole walls of the through holes are round corners.
And a reinforcing metal wire mesh 4 is adhered to the inner wall of the through hole.
The through hole extends upwards into the screw head 1, and the height of the reinforcing core rod 3 and the height of the metal wire mesh 4 are consistent with the height of the through hole.
The through hole penetrates through the top surface of the screw head 1, and the through hole does not penetrate through the bottom surface of the screw rod 2.
The reinforcing core rod 3 is a titanium alloy core rod.
Example two:
referring to fig. 3, the cross section of the protrusion 31 is shaped like a horn, and the end of the protrusion 31 with the larger diameter is connected to the body of the reinforcing mandrel 3. The other steps are the same as those of the first embodiment.
The utility model discloses the working process:
the utility model effectively increases the strength of the screw and avoids the screw from deforming under pressure in the use process by arranging the reinforcing core rod in the screw as the supporting framework; the outer wall of the reinforcing core rod is provided with a plurality of convex parts arranged around the central axis, so that the deformation prevention effect of the screw is further improved; the corner of the hole wall of the through hole is a round angle, so that the probability of generating cracks is reduced; the strength of the hole wall of the through hole is further improved by sticking a layer of reinforced metal wire mesh on the inner wall of the through hole.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (8)
1. The utility model provides an anti-deformation high-strength drill tail screw, includes spiral shell head (1) and screw rod (2), be equipped with external screw thread (21) on the outer wall of screw rod (2), the top of screw rod (2) is fixed in the bottom surface central authorities of spiral shell head (1) and the bottom is equipped with self-tapping drill bit (22), its characterized in that: and a reinforcing core rod (3) is also arranged in the screw rod (2).
2. The anti-deformation high-strength drill tail screw according to claim 1, wherein: the outer wall of the reinforcing mandrel (3) is provided with a plurality of protruding parts (31) arranged around the central axis, the body of the reinforcing mandrel (3) and the protruding parts (31) are of an integrated structure, the center of the screw (2) is provided with a through hole matched with the body of the reinforcing mandrel (3) and the protruding parts (31) in shape, and the reinforcing mandrel (3) is concentrically fixed in the through hole.
3. The anti-deformation high-strength drill tail screw according to claim 2, wherein: the cross section of the protruding part (31) is in a straight strip shape or a horn shape, and when the protruding part (31) is in the horn shape, the end with the larger diameter of the protruding part (31) is connected with the body of the reinforcing core rod (3).
4. The anti-deformation high-strength drill tail screw according to claim 3, wherein: and corners of the hole walls of the through holes are round corners.
5. The anti-deformation high-strength drill tail screw according to claim 4, wherein: and a reinforced metal wire mesh (4) is adhered to the inner wall of the through hole.
6. The anti-deformation high-strength drill tail screw according to claim 5, wherein: the through hole extends upwards into the screw head (1), and the height of the reinforcing core rod (3) and the height of the metal wire mesh (4) are consistent with the height of the through hole.
7. The anti-deformation high-strength drill tail screw according to claim 6, wherein: the through hole penetrates through the top surface of the screw head (1), and the through hole does not penetrate through the bottom surface of the screw rod (2).
8. An anti-deformation high strength drill tail screw according to any one of claims 1 to 7, wherein: the reinforcing core rod (3) is a titanium alloy core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120158192.4U CN215257252U (en) | 2021-01-20 | 2021-01-20 | Deformation-preventing high-strength drill tail screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120158192.4U CN215257252U (en) | 2021-01-20 | 2021-01-20 | Deformation-preventing high-strength drill tail screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215257252U true CN215257252U (en) | 2021-12-21 |
Family
ID=79499035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120158192.4U Active CN215257252U (en) | 2021-01-20 | 2021-01-20 | Deformation-preventing high-strength drill tail screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215257252U (en) |
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2021
- 2021-01-20 CN CN202120158192.4U patent/CN215257252U/en active Active
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