CN214661437U

CN214661437U - Anti-loose screw

Info

Publication number: CN214661437U
Application number: CN202120838916.XU
Authority: CN
Inventors: 陈勇
Original assignee: Suzhou Hongly Hardware Co ltd
Current assignee: Suzhou Lituo Hardware Industry Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-11-09
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a locking screw that moves, including head, pole portion and the afterbody that sets gradually, the tip that pole portion was kept away from to the head has the recess, the afterbody is the toper, be formed with the unequal first screw thread section of tooth pitch and second screw thread section on the pole portion at least. The utility model provides a locking screw that moves can make the installation quick between the substrate to effectively prevent the not hard up that arouses at substrate vibrations in-process, thereby stop the object and drop and cause the accident, the practicality is strong.

Description

Anti-loose screw

Technical Field

The utility model belongs to the building field, concretely relates to locking screw that moves.

Background

In the installation of a home or other building, it is often necessary to use screws on one or more substrates to effect the attachment. Generally, a screw with a single thread or an unthreaded iron nail is used for connection, but after a long time, the single thread screw or the iron nail is easy to loosen after the building is vibrated continuously, so that an accident caused by falling of an object is caused. Thus, there is a high necessity for a coupling member that effectively prevents loosening.

Therefore, in view of the above technical problems, there is a need to provide a screw with anti-loosening function.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a screw with anti-loosening function, so as to effectively prevent the base material from loosening.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

the screw comprises a head part, a rod part and a tail part which are sequentially arranged, wherein a groove is formed in the end part, far away from the rod part, of the head part, the tail part is conical, and a first thread section and a second thread section with unequal thread pitches are formed on the rod part.

In one embodiment, the pitch of the first thread segments is greater than the pitch of the second thread segments.

In one embodiment, the pitch of the first thread section is 1.2 to 3 times that of the second thread section.

In one embodiment, the thread diameter of the first thread section is not equal to the thread diameter of the second thread section.

In one embodiment, the thread diameter of the first thread section is larger than the thread diameter of the second thread section.

In one embodiment, the thread diameter of the first thread section is 1.02-1.1 times that of the second thread section.

In one embodiment, the shaft has a neck portion adjacent to the head portion, and the neck portion has a diameter that gradually increases in a direction from the shaft portion to the head portion.

In one embodiment, a portion of the first thread segments and a portion of the second thread segments are staggered.

In one embodiment, the groove is in a straight line shape, a cross shape, a hexagon shape or a quincunx shape.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model provides a locking screw that moves can make the installation quick between the substrate to effectively prevent the not hard up that arouses at substrate vibrations in-process, thereby stop the object and drop and cause the accident, the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic front view of a locking screw according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiments, and the structural, method, or functional changes made by those skilled in the art according to the embodiments are all included in the scope of the present invention.

The utility model discloses a locking screw that moves, including the head, pole portion and the afterbody that set gradually, the tip that pole portion was kept away from to the head has the recess, and the afterbody is the toper, is formed with the unequal first screw thread section of tooth pitch and second screw thread section on the pole portion at least.

The present invention will be further described with reference to the following specific examples.

Referring to fig. 1, an anti-loosening screw, including head 1 that sets gradually, pole portion 2 and afterbody 3, the top of head 1 has the recess, the horizontal cross-section of recess is the in-line, the cross, hexagon or plum blossom shape, can make things convenient for use tool and twist the screw through the recess, afterbody 3 is the toper, afterbody 3 adopts and cuts the tail technology and makes, be formed with the unequal first screw thread section 21 of tooth pitch and second screw thread section 22 on pole portion 2 at least, first screw thread section 21 and second screw thread section 22 set gradually, first screw thread section 21 is close to afterbody 3 and sets up, second screw thread section 22 is close to head 1 and sets up.

In particular, the pitch L of the first thread segments 21₁Greater than the pitch L of the second thread segments 22₂Pitch L of the first thread segments 21₁Is the pitch L of the second thread segments 22₂1.2-3 times of the total amount of the active component.

In addition, the thread diameter d of the first thread segments 21₁The diameter d of the second thread segments 22₂Unequal, in particular, the thread diameter d of the first thread segments 21₁Larger than the diameter d of the second thread segments 22₂The diameter d of the first thread segments 21₁Is the pitch diameter d of the second thread segments 22₂1.02 to 1.1 times of the total weight of the composition.

Referring to fig. 1, the shaft 2 has a neck 4 near the head 1, and the diameter of the neck 4 gradually increases along the direction from the shaft 2 to the head 1.

Further, a part of the first thread segments 21 and a part of the second thread segments 22 are arranged in a staggered manner, specifically, the first thread segments 21 and the second thread segments 22 are both arranged on the rod portion 2 in a spiral manner, and along the direction of the rod portion 2, a part of threads on the second thread segments 22 and a part of threads on the first thread segments 21 are arranged in a staggered manner.

In mounting the substrate the tail 3 first enters the substrate and is caused to enter rapidly by severing the substrate surface texture and the first thread segments 21 subsequently enter the substrate. Due to the pitch L of the first thread segments 21₁Larger, the first thread segments 21 will penetrate more quickly into the substrate; the second thread segments 22 then enter the substrate due to the pitch L of the second thread segments 22₂Less than the pitch L of the first thread segments 21₁Firstly, the first thread segments 21 are broken and then the tracks in the substrate are made tighter, and secondly, the second thread segments 22 pull the first thread segments 21 during the process to make the substrate more conformable.

And (3) actual test: use the utility model discloses a locking screw that moves carries out contrast test with conventional screw, and two kinds of different screws are installed into in same piece of timber, carry out two sets of experiments contrast:

the first group is under the condition of continuous tremble, until there is the screw not hard up, use the utility model discloses an anti-loosening screw does not become flexible, and conventional screw begins to appear not hard up.

The second group is under quiescent condition, reverse screw out screw, uses the utility model discloses a locking screw that moves compares in ordinary screw, needs bigger torsion just can reverse screw out, explains that locking screw that moves is more firm in timber.

According to the technical scheme provided by the utility model, the utility model discloses following beneficial effect has:

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The anti-loosening screw is characterized by comprising a head part, a rod part and a tail part which are sequentially arranged, wherein a groove is formed in the end part, far away from the rod part, of the head part, the tail part is conical, and at least a first thread section and a second thread section with unequal thread pitches are formed on the rod part.

2. The anti-loosening screw according to claim 1, wherein the pitch of the first threaded section is greater than the pitch of the second threaded section.

3. The anti-loosening screw according to claim 2, wherein the pitch of the first thread section is 1.2 to 3 times that of the second thread section.

4. The anti-loosening screw according to claim 1, wherein the thread diameter of the first thread section is not equal to the thread diameter of the second thread section.

5. The anti-loosening screw according to claim 4, wherein the thread diameter of the first thread section is larger than the thread diameter of the second thread section.

6. The anti-loosening screw according to claim 5, wherein the diameter of the first thread section is 1.02 to 1.1 times the diameter of the second thread section.

7. The anti-loosening screw according to claim 1, wherein the shank has a neck portion near the head, and the diameter of the neck portion gradually increases in a direction from the shank to the head.

8. The anti-loosening screw according to claim 1, wherein a portion of the first thread section and a portion of the second thread section are staggered.

9. The anti-loosening screw according to claim 1, wherein the recess has a straight shape, a cross shape, a hexagonal shape or a quincunx shape.