CN219953895U - Drilling self-tapping screw for wood - Google Patents
Drilling self-tapping screw for wood Download PDFInfo
- Publication number
- CN219953895U CN219953895U CN202320779967.9U CN202320779967U CN219953895U CN 219953895 U CN219953895 U CN 219953895U CN 202320779967 U CN202320779967 U CN 202320779967U CN 219953895 U CN219953895 U CN 219953895U
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- screw head
- screw
- groove cavity
- external unit
- self
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 17
- 239000002023 wood Substances 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 title description 2
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Connection Of Plates (AREA)
Abstract
The utility model relates to the technical field of fasteners, in particular to a self-tapping screw for wood, which comprises a rod body, a screw head arranged on one end of the rod body and a tip part arranged on the other end of the rod body, wherein an external thread is arranged on the peripheral wall of the rod body, a groove cavity is formed in the screw head, a notch communicated with the groove cavity is formed in the peripheral wall of the screw head, an external unit is arranged in the groove cavity, an extension part which extends out of the notch and is arranged outside the screw head is arranged on the external unit, and the external unit made of rubber is arranged in the groove cavity on the screw head, so that the screw head is prevented from being directly and rigidly contacted with the screw head when the screw head is contacted with the screw head, the pressure-relieving effect is achieved, and the groove cavity is ensured not to be easily damaged when being stressed.
Description
Technical Field
The utility model relates to the technical field of fasteners, in particular to a self-tapping screw for wood.
Background
The self-tapping screw is extremely wide in the connection of furniture, especially on timber, and self-tapping screw includes the threaded body of rod, forms the screw head in the one end of body of rod, and the up end of this screw head is the cell body of a font, cross, when need dismantle or fasten the screw, only be used for electric drill or screwdriver drive screw rotation can accomplish the installation.
When the end part of the screw driver is not aligned with the groove body or the structural strength of the screw is low, the end part can slide in the groove body in the use process of the existing screw, so that the structure of the groove body is broken, the screw cannot be used continuously or even the screw cannot be disassembled.
To this problem, publication No. CN211951117U discloses a self-tapping screw, which guarantees the realization of disassembling the screw by the cooperation of a wrench and a second groove body under the condition that the first groove body is damaged due to the rotation of the wrench by external force through an additionally installed high-strength alloy sleeve assembly.
However, the structure has high manufacturing cost, a sleeve structure made of alloy materials is needed, and the screw head needs to be heightened and threaded during installation, so that high processing technology requirements are needed. After being connected with the wood, the screw head is exposed due to the fact that the screw head is heightened, the screw head is easy to touch, and potential safety hazards exist.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide the punching self-tapping screw which has reasonable and simple structure and strong practicability, improves the structural strength of the screw head groove body, and reduces the possibility of damage caused by rigid extrusion.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a self-tapping screw for wood comprises a rod body, a screw head arranged at one end of the rod body and a tip arranged at the other end of the rod body, wherein the peripheral wall of the rod body is provided with external threads, a groove cavity is arranged on the screw head, a notch communicated with the groove cavity is arranged on the peripheral wall of the screw head,
an external unit is arranged in the groove cavity, and an extension part which extends out of the notch and is arranged outside the screw head is arranged on the external unit.
The utility model is further provided with: the external unit is provided with a through groove penetrating through the body of the external unit corresponding to the outline of the groove cavity.
The utility model is further provided with: the external unit is made of rubber.
The utility model is further provided with: the groove cavity is cross-shaped, the notch is four corresponding to the groove cavity, reinforcing ribs are arranged on the cross connection parts of the external units, and the outer walls of the reinforcing ribs are arc-shaped.
The utility model is further provided with: the end face of the extension part is parallel to the notch.
The utility model is further provided with: the outer edge of the end part of the screw head is downwards rolled with an outer ring part, and an annular groove is formed between the outer ring part and the outer peripheral wall of the screw head.
Compared with the defects in the prior art, the utility model has the beneficial effects that:
by installing the external unit made of rubber in the groove cavity on the screw head, the direct rigid contact between the screw driver end and the screw driver end is avoided, the pressure-relieving effect is achieved, and the groove cavity is not easy to damage when being stressed.
The notch is formed in the screw head corresponding to the groove cavity, and the extension part extends out of the notch and is used for being in contact with a connected object of the screw to be extruded, so that the connection strength is improved, and the extension part achieves the purpose of a traditional gasket.
Drawings
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a schematic bottom perspective view of the present utility model;
fig. 3 is a schematic top view of the present utility model.
Self-tapping screw 1, screw body 11, screw head 12, tip 13, groove cavity 10, notch 101, external unit 2, through groove 20, reinforcing rib 21, extension 22, outer ring portion 3, annular groove 31.
Description of the embodiments
Embodiments of the present utility model will be further described with reference to fig. 1 to 3.
The specific structure of the embodiment is as follows: the self-tapping screw 1 specifically comprises a rod body 11, a screw head 12 arranged at one end of the rod body 11 and a tip 13 arranged at the other end of the rod body 11, wherein external threads are arranged on the peripheral wall of the rod body 11, a cross-shaped groove cavity 10 is formed in the screw head 12, notches 101 communicated with the groove cavity 10 are formed in the peripheral wall of the screw head 12, and the notches 101 are arranged in four directions corresponding to the groove cavity 10.
An external unit 2 made of rubber is arranged in the groove cavity 10, a cross-shaped through groove 20 with the same appearance as the groove cavity 10 is arranged in the center of the external unit 2, namely a cross-shaped cavity is formed, and the through groove 20 is used for enabling a screwdriver end to extend into the screwdriver for applying force. An extension part 22 is arranged on the outer wall of the external unit 2, when the external unit 2 is inserted into the groove cavity 10 and fixed in the groove cavity 10, the end face of the extension part 22 can extend out of the notch 101 to lift away from the notch 101, and the end face of the extension part 22 is parallel to the notch 101. The end face of the extension portion 22 is U-shaped, so that when the extension portion contacts with wood, the extension portion can be bent in one direction by extrusion, and then is attached to the outer wall of the screw head 12, and the connection strength between the external unit 2 and the groove cavity 10 can be further improved.
Because the screw head 12 is the toper form, so in the connection process of screw and timber, screw head 12 outer wall and timber are rigid extrusion, when the screw was pressed the timber by the too big application of force of screwdriver, because screw head 12 does not have the screw thread pressure tooth, it can lead to producing the crackle around punching to the port hard stay of trompil on the timber, through the rubber characteristic of extension 22, with timber extrusion realization buffering damping purpose, when extension 22 and perforating end contact, the rotational speed of screw obviously has the stagnant sense, can remind constructor to slow down the speed of punching.
The cross connection part of the external unit 2 is provided with a reinforcing rib 21, and the outer wall of the reinforcing rib 21 is arc-shaped. The structural strength of the external unit 2 can be improved by the arrangement of the reinforcing ribs 21, and the external unit is not easy to break when being forced.
The outer edge of the end part of the screw head is downwards rolled with an outer ring part 3, and an annular groove 30 is formed between the outer ring part 3 and the outer peripheral wall of the screw head. The setting of outer loop portion 3 can be after the screw head gets into the quilt and connects the thing, and its outer edge is smooth curved surface, cuts the skin when avoiding unexpected and finger contact, and outer loop portion 3 has realized hanging down moreover, and it makes after being connected the thing contact for its screw head 12 terminal surface lifts off the quilt and connects the thing, makes things convenient for follow-up dismantlement with the screw.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model, but one skilled in the art can make common changes and substitutions within the scope of the technical solution of the present utility model.
Claims (6)
1. A self-tapping screw (1) punches for timber, includes body of rod (11), arranges in screw head (12) on body of rod (11) one end and arranges in tip (13) of body of rod (11) other end, is equipped with the external screw thread on the periphery wall of body of rod (11), its characterized in that: a groove cavity (10) is formed in the screw head (12), a notch (101) communicated with the groove cavity (10) is formed in the peripheral wall of the screw head (12),
an external unit (2) is arranged in the groove cavity (10), and an extension part (22) which extends out of the notch (101) and is arranged outside the screw head (12) is arranged on the external unit (2).
2. A self-tapping screw for wood according to claim 1, wherein: the external unit (2) is provided with a through groove (20) penetrating through the body of the external unit corresponding to the outline of the groove cavity (10).
3. A self-tapping screw for wood according to claim 2, wherein: the external unit (2) is made of rubber.
4. A self-tapping screw for wood according to claim 2, wherein: the groove cavity (10) is cross-shaped, the notch (101) is arranged to correspond to the groove cavity (10) and is provided with four, the cross connection part on the external unit (2) is provided with reinforcing ribs (21), and the outer wall of each reinforcing rib (21) is arc-shaped.
5. A self-tapping screw for wood according to claim 1, wherein: the end face of the extension part (22) is parallel to the notch (101).
6. A self-tapping screw for wood according to claim 1, wherein: the outer edge of the end part of the screw head is downwards rolled with an outer ring part (3), and an annular groove is formed between the outer ring part (3) and the outer peripheral wall of the screw head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320779967.9U CN219953895U (en) | 2023-04-06 | 2023-04-06 | Drilling self-tapping screw for wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320779967.9U CN219953895U (en) | 2023-04-06 | 2023-04-06 | Drilling self-tapping screw for wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953895U true CN219953895U (en) | 2023-11-03 |
Family
ID=88538610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320779967.9U Active CN219953895U (en) | 2023-04-06 | 2023-04-06 | Drilling self-tapping screw for wood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953895U (en) |
-
2023
- 2023-04-06 CN CN202320779967.9U patent/CN219953895U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |