CN207673683U - Double thread section expansion cracking proof drywall screw - Google Patents

Abstract

The utility model discloses a kind of double thread section expansion cracking proof drywall screws, including ailhead, nail tail and rivet nut, the rivet nut is equipped with two sections of screw threads, two sections of screw threads are respectively the head end screw thread close to the threads and close described ailhead one end of described nail tail one end, and the sawtooth of radially outwardly projecting is equipped at intervals on the head end screw thread.The double thread section expansion cracking proof drywall screw of the utility model, by the way that two sections of screw threads are arranged in rivet nut, threads are as existing drywall screw screw thread, it can quickly be shot in connected piece together with nail tail, and the sawtooth being arranged on head end screw thread can play the role of the connecting hole repairing type to shooting, to avoid connected piece by spalling, i.e. the double thread section expansion cracking proof drywall screw of the utility model can not only play connection function as traditional drywall screw, but also connected piece can be effectively prevent by spalling.

Description

Double thread section expansion cracking proof drywall screw

Technical field

The utility model belongs to screw technique field, is specifically a kind of double thread section expansion cracking proof drywall screw.

Background technology

Drywall screw is a kind of nail, and maximum feature in appearance is exactly head of the trumpet moulding, divides two-wire closely-pitched dry wall screw With the dry wall screw of single line coarse thread, the maximum difference of the two is that the former screw thread is double thread.Drywall screw is generally used for plasterboard With the connection of rough ground and plasterboard and lightgage steel joist.As one kind of fastener, technology requires relatively high, it can be Under conditions of not making pre- hole, it is quickly screwed keel or steel plate, plays connection and fixed function well.

Although existing drywall screw disclosure satisfy that requirement to a certain extent, the wooden dragon is being shot with automated tool When in bone and plasterboard, rough ground and plasterboard spalling are may result in, and then bonding strength is caused to reduce, design is not achieved and wants It asks.

Invention content

In view of this, the purpose of this utility model is to provide a kind of double thread section expansion cracking proof drywall screw, can not only expire Sufficient requirement, and can effectively avoid spalling connected piece.

In order to achieve the above objectives, the utility model provides the following technical solutions：

A kind of double thread section expansion cracking proof drywall screw, including ailhead, nail tail and rivet nut, the rivet nut are equipped with two sections of screw threads, Two sections of screw threads are respectively the head end screw thread close to the threads and close described ailhead one end of described nail tail one end, described The sawtooth of radially outwardly projecting is equipped at intervals on head end screw thread.

Further, it is equipped with plum blossom trough in the middle part of the top surface of the ailhead.

Further, the outer diameter of the ailhead is directed toward the direction for following closely tail along ailhead and is gradually reduced, and the ailhead Annular is laid with for preventing from reversely rotating the diagonal bar exited on periphery wall.

Further, it is at least four that the diagonal bar annular, which is uniformly arranged,.

Further, the diagonal bar is equipped with the edge of a knife for preventing from reversely rotating.

Further, the geometric dimension of the nail tail is directed toward the direction for following closely tail along the ailhead and is gradually reduced, and institute It includes following closely tail ontology to state nail tail, and annular is laid with cutting edge on the nail tail ontology.

Further, the nail tail ontology is rectangular, and the cutting edge annular is uniformly arranged as two and is located at described Follow closely the both ends of tail ontology.

The beneficial effects of the utility model are：

The double thread section expansion cracking proof drywall screw of the utility model, by the way that two sections of screw threads are arranged in rivet nut, threads are such as Existing drywall screw screw thread is the same, the sawtooth that quickly can be shot in connected piece together with nail tail, and be arranged on head end screw thread It can play the role of the connecting hole repairing type to shooting, to avoid connected piece by spalling, i.e. the double thread section of the utility model Expansion cracking proof drywall screw can not only play connection function as traditional drywall screw, but also connected piece can be effectively prevent swollen It splits.

Description of the drawings

In order to keep the purpose of this utility model, technical solution and advantageous effect clearer, the utility model provides as follows Attached drawing illustrates：

Fig. 1 is the structural schematic diagram of the utility model double thread section expansion cracking proof drywall screw embodiment；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the sectional view of ailhead；

Fig. 4 is the longitudinal section view of head end screw thread；

Fig. 5 is the longitudinal section view for following closely tail.

Specific implementation mode

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art The utility model can be better understood from and can be practiced, but illustrated embodiment is not as the restriction to the utility model.

As shown in Figure 1, for the structural schematic diagram of the utility model double thread section expansion cracking proof drywall screw embodiment.The present embodiment Double thread section expansion cracking proof drywall screw, including ailhead 1, nail tail 2 and rivet nut 3, rivet nut 3 be equipped with two sections of screw threads, two sections of screw threads point Diameter Wei not be equipped at intervals with close to the threads 4 of 2 one end of nail tail and on the head end screw thread 5 of 1 one end of ailhead, head end screw thread 5 To the sawtooth of outwardly convex.

Further, it is equipped with plum blossom trough 6 in the middle part of the top surface of the ailhead 1 of the present embodiment.The outer diameter of ailhead 1 is directed toward along ailhead 1 The direction of nail tail 2 is gradually reduced, and annular is laid with for preventing from reversely rotating the diagonal bar 7 exited on the periphery wall of ailhead 1, Specifically, the diagonal bar 7 of the present embodiment is equipped with the edge of a knife for preventing from reversely rotating.It is at least four that 7 annular of diagonal bar, which is uniformly arranged, A, it is 6 that 7 annular of diagonal bar of the present embodiment, which is uniformly arranged, can effectively ensure that connection reliability, prevents because after long-time use Loosening leads to the problem of Joint failure.

Further, the geometric dimension of nail tail 2 is gradually reduced along the direction of the direction nail tail 2 of ailhead 1, and it includes nail to follow closely tail 2 Annular is laid with cutting edge 2b on tail ontology 2a, nail tail ontology 2a.The nail tail ontology 2a of the present embodiment is rectangular, cutting edge 2b Annular is uniformly arranged as two and is located at the both ends of nail tail ontology 2a, as shown in Figure 5.

The double thread section expansion cracking proof drywall screw of the present embodiment, by the way that two sections of screw threads are arranged in rivet nut, threads are such as existing Some drywall screw screw threads are the same, can quickly be shot in connected piece together with nail tail, and the sawtooth being arranged on head end screw thread can To play the role of the connecting hole repairing type to shooting, to avoid connected piece by spalling, i.e. the double thread section of the utility model is anti- Spalling drywall screw can not only play connection function as traditional drywall screw, but also connected piece can be effectively prevent by spalling.

Embodiment described above is only the preferred embodiment lifted to absolutely prove the utility model, the utility model Protection domain it is without being limited thereto.Those skilled in the art on the basis of the utility model made by equivalent substitute or change It changes, both is within the protection scope of the present invention.The scope of protection of the utility model is subject to claims.

Claims (9)

1. a kind of double thread section expansion cracking proof drywall screw, including ailhead（1）, nail tail（2）And rivet nut（3）, it is characterised in that：The nail Body（3）Two sections of screw threads are equipped with, two sections of screw threads are respectively close to the nail tail（2）The threads of one end（4）With it is close The ailhead（1）The head end screw thread of one end（5）, the head end screw thread（5）On be equipped at intervals with the sawtooth of radially outwardly projecting.

2. double thread section expansion cracking proof drywall screw according to claim 1, it is characterised in that：The ailhead（1）Top surface in Portion is equipped with plum blossom trough（6）.

3. double thread section expansion cracking proof drywall screw according to claim 1 or 2, it is characterised in that：The ailhead（1）Outer diameter Along ailhead（1）It is directed toward the nail tail（2）Direction be gradually reduced, and the ailhead（1）Periphery wall on annular be laid with For preventing from reversely rotating the diagonal bar exited（7）.

4. double thread section expansion cracking proof drywall screw according to claim 3, it is characterised in that：The diagonal bar（7）Annular is uniformly distributed It is set as at least four.

5. double thread section expansion cracking proof drywall screw according to claim 3, it is characterised in that：The diagonal bar（7）It is equipped with and uses In the edge of a knife for preventing from reversely rotating.

6. double thread section expansion cracking proof drywall screw according to claim 1 or 2, it is characterised in that：The nail tail（2）Geometry Size is along the ailhead（1）It is directed toward the nail tail（2）Direction be gradually reduced, and the nail tail（2）Including following closely tail ontology （2a）, the nail tail ontology（2a）Upper annular is laid with cutting edge（2b）.

7. double thread section expansion cracking proof drywall screw according to claim 6, it is characterised in that：The nail tail ontology（2a）For side Shape, the cutting edge（2b）Annular is uniformly arranged as two and is located at the nail tail ontology（2a）Both ends.

8. double thread section expansion cracking proof drywall screw according to claim 3, it is characterised in that：The nail tail（2）Dimensioning It is very little along the ailhead（1）It is directed toward the nail tail（2）Direction be gradually reduced, and the nail tail（2）Including following closely tail ontology（2a）, The nail tail ontology（2a）Upper annular is laid with cutting edge（2b）.

9. double thread section expansion cracking proof drywall screw according to claim 8, it is characterised in that：The nail tail ontology（2a）For side Shape, the cutting edge（2b）Annular is uniformly arranged as two and is located at the nail tail ontology（2a）Both ends.