CN219605770U

CN219605770U - Anticreep formula self-tapping screw for photovoltaic module

Info

Publication number: CN219605770U
Application number: CN202321083471.4U
Authority: CN
Inventors: 柯强武
Original assignee: Zhejiang Yijie Te Fastener Manufacturing Co ltd
Current assignee: Zhejiang Yijie Te Fastener Manufacturing Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-08-29
Anticipated expiration: 2033-05-08

Abstract

The utility model discloses a self-tapping screw for an anti-falling photovoltaic module, which comprises a screw cap, wherein the lower end of the screw cap is provided with a screw rod, the lower end of the screw rod is fixedly connected with a tail rod, a part, close to the tail rod, of the screw rod is provided with a first external thread, and the screw rod is also provided with a second external thread. According to the self-tapping screw, when the self-tapping screw is used for fixing the photovoltaic module, the first external screw is tapped in the hole after the tail rod is drilled and the hole is screwed, so that screwing of the self-tapping screw is ensured, and then the second external screw can deform the thread generated by tapping of the first external screw when screwing, and the gap of the thread is smaller than the width of the check block, so that the anti-falling purpose is realized, the fixing effect of the photovoltaic module is ensured, and the use requirement of fixing the photovoltaic module such as a photovoltaic panel outdoors is met.

Description

Anticreep formula self-tapping screw for photovoltaic module

Technical Field

The utility model relates to the technical field of fasteners, in particular to a self-tapping screw for an anti-falling photovoltaic module.

Background

The self-tapping screw is used for nonmetal or softer metal, does not need to punch a bottom hole and tap, directly holes and taps on an object by utilizing the tip of the self-tapping screw to match with the harder rough pressure, and can 'tap-drill, squeeze and press' corresponding threads of a consolidated body on the consolidated material by virtue of the threads of the self-tapping screw so as to be mutually matched tightly, thereby screwing the self-tapping screw into the object and realizing the due function of the self-tapping screw as a fastener.

In the fixing of photovoltaic module, need be in the part in the photovoltaic module is arranged in outdoor environment, especially photovoltaic board needs the sun of large tracts of land to realize the effect of converting solar energy into the electric energy, nevertheless the photovoltaic board that the area is great also can exist great windage in the windy weather for photovoltaic board rocks, conventional self-tapping screw is easy not hard up after long-term use, and the user often can not often inspect self-tapping screw, once photovoltaic board drops then drops, the photovoltaic board is scrapped to appear easily, cause great economic loss, for this reason, we propose an anticreep formula photovoltaic module and solve above-mentioned problem with self-tapping screw.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a self-tapping screw for an anti-falling photovoltaic module.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the self-tapping screw for the anti-falling photovoltaic module comprises a screw cap, wherein the lower end of the screw cap is provided with a screw rod;

the lower extreme fixedly connected with tail boom of screw rod, and the screw rod is close to the part of tail boom and has seted up first external screw thread, still seted up the second external screw thread on the screw rod, the second external screw thread is located first external screw thread top setting, the pitch of second external screw thread is less than the pitch of first external screw thread, the junction fixedly connected with check block that the symmetry set up of first external screw thread and second external screw thread.

Preferably, the width of the second external thread is smaller than the width of the first external thread, and the thickness of the second external thread is larger than the thickness of the first external thread.

Preferably, the tail rod is sheet-shaped, and the upper end of the tail rod is provided with a strengthening block.

Preferably, the second external thread is provided with an elastic piece, and the elastic piece is arc-shaped.

Preferably, the screw is fixedly connected with a compression ring near the side wall of the nut, and the compression ring is conical.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the self-tapping screw, when the photovoltaic module is fixed by the self-tapping screw, after the tail rod is drilled, the first external screw is tapped in the hole after being screwed into the hole, so that screwing of the self-tapping screw is ensured, then the second external screw can deform the thread generated by tapping of the first external screw when screwing, and the gap of the thread is smaller than the width of the check block, so that the anti-falling purpose is realized, the fixing effect of the photovoltaic module is ensured, and the use requirement of fixing the photovoltaic module such as a photovoltaic panel outdoors is met;

2. according to the photovoltaic panel fixing device, the second external thread with the width smaller than that of the first external thread is arranged to avoid the situation that the thread tops of threads tapped by the first external thread are broken, so that the thread cannot limit the non-return block and the first external thread, and particularly the photovoltaic panel is fixed on the metal bracket after the photovoltaic panel fixing device is used.

Drawings

Fig. 1 is a schematic diagram of the whole structure of a self-tapping screw for an anti-drop photovoltaic module according to the present utility model;

fig. 2 is a schematic view of another view angle structure of a self-tapping screw for an anti-drop photovoltaic module according to the present utility model;

fig. 3 is an enlarged schematic view of the structure at a in fig. 1.

In the figure: 1. a screw cap; 2. a screw; 3. tail rod; 4. a first external thread; 5. a second external thread; 6. a non-return block; 7. a reinforcing block; 8. an elastic sheet; 9. and a compression ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, a self-tapping screw for an anti-falling photovoltaic module comprises a screw cap 1, wherein a screw rod 2 is arranged at the lower end of the screw cap 1;

the lower extreme fixedly connected with tail boom 3 of screw rod 2, and screw rod 2 is close to the part of tail boom 3 and has seted up first external screw thread 4, still set up second external screw thread 5 on the screw rod 2, second external screw thread 5 is located first external screw thread 4 top setting, the pitch of second external screw thread 5 is less than the pitch of first external screw thread 4, the junction fixedly connected with check 6 of first external screw thread 4 and second external screw thread 5 symmetry setting, in this kind of design, first external screw thread 4 carries out the tapping in the hole after the drilling of tail boom 3 in the hole, ensures the screw-in of this kind of self-tapping screw, and the screw thread that first external screw thread 4 tapping produced takes place deformation later on the second external screw thread 5 when screwing in for the screw thread becomes inseparable, and the clearance that obtains the screw thread is less than the width of check 6 at this moment, finally makes this kind of self-tapping screw unable gyration, realizes better anticreep effect.

Further, the width of the second external thread 5 is smaller than the width of the first external thread 4, and the thickness of the second external thread 5 is larger than the thickness of the first external thread 4, so that the situation that the thread tapped by the first external thread 4 is broken to cause that the thread deformed by the extrusion of the second external thread 5 cannot limit the non-return block 6 is avoided by arranging the second external thread 5 with a width smaller than the first external thread 4.

Further, the tail rod 3 is sheet-shaped, the strengthening block 7 is arranged at the upper end of the tail rod 3, the sheet-shaped tail rod 3 is matched with the strengthening block 7, the strength of the tail rod 3 can be improved while the hole rotating effect of the tail rod 3 is ensured, and breakage of the tail rod 3 during drilling is avoided.

Furthermore, the second external thread 5 is provided with an elastic piece 8, in this design, since the second external thread 5 further works on the thread tapped by the first external thread 4, the thread is inevitably damaged, and a part of the elastic piece 8 can be inserted into the damaged portion, thereby further improving the anti-falling effect.

Further, the screw rod 2 is close to the clamping ring 9 of nut 1 lateral wall fixedly connected with, and clamping ring 9 is the toper, sets up clamping ring 9 and is used for extruding the a small amount of screw teeth after first external screw thread 4 and the tapping of second external screw thread 5 for this department warp and oppression on second external screw thread 5, and then improves the anticreep effect.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The self-tapping screw for the anti-falling photovoltaic module is characterized by comprising a screw cap (1), wherein the lower end of the screw cap (1) is provided with a screw rod (2);

the lower extreme fixedly connected with tail boom (3) of screw rod (2), and the screw rod (2) is close to the part of tail boom (3) and is equipped with first external screw thread (4), second external screw thread (5) have still been seted up on screw rod (2), second external screw thread (5) are located first external screw thread (4) top setting, the pitch of second external screw thread (5) is less than the pitch of first external screw thread (4), the junction fixedly connected with check block (6) of first external screw thread (4) and second external screw thread (5) symmetry setting.

2. The self-tapping screw for the anti-drop photovoltaic module according to claim 1, wherein the width of the second external thread (5) is smaller than the width of the first external thread (4), and the thickness of the second external thread (5) is larger than the thickness of the first external thread (4).

3. The self-tapping screw for the anti-drop photovoltaic module according to claim 1, wherein the tail rod (3) is sheet-shaped, and a reinforcing block (7) is arranged at the upper end of the tail rod (3).

4. The self-tapping screw for the anti-drop photovoltaic module according to claim 2, wherein the second external thread (5) is provided with an elastic sheet (8), and the elastic sheet (8) is arc-shaped.

5. The self-tapping screw for the anti-drop photovoltaic module according to claim 1, wherein the screw (2) is fixedly connected with a pressing ring (9) close to the side wall of the screw cap (1), and the pressing ring (9) is conical.