Photovoltaic support roof waterproof type fixing buckle

By using corrugated rubber sleeves and metal sleeves in the photovoltaic brackets to prevent rainwater dripping, the problem of bolt corrosion was solved, enabling convenient disassembly and assembly of the photovoltaic brackets and extending their service life.

CN224468684UActive Publication Date: 2026-07-07NANJING NINGJIN MASCH MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING NINGJIN MASCH MFG CO LTD
Filing Date
2025-10-09
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The bolts of existing photovoltaic brackets are exposed to the environment, causing them to rust when it rains, making them difficult to turn and affecting the ease of installation and disassembly of the photovoltaic brackets.

Method used

A waterproof fixing buckle for photovoltaic brackets on the roof was designed. A corrugated rubber sleeve and a metal sleeve are placed on the outside of the clamping bolt to prevent rainwater from dripping onto the connection. The smooth connection between the clamping bolt and the U-shaped frame extends the service life and ensures convenient assembly and disassembly.

Benefits of technology

It effectively prevents rainwater from corroding the bolt connections, maintains a smooth connection between the bolts and the U-shaped frame, extends the service life of the snap-fit ​​structure, and ensures ease of assembly and disassembly.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224468684U_ABST
    Figure CN224468684U_ABST
Patent Text Reader

Abstract

The utility model relates to photovoltaic support technical field, concretely is a kind of photovoltaic support roof waterproof type fixed buckle, it includes: purlin, the top surface of purlin is equipped with C-shaped frame, the top surface of C-shaped frame is equipped with photovoltaic board;Clasp structure is installed on the purlin, the clasp structure includes U-shaped frame, the bottom end outside of purlin is sleeved in U-shaped frame, the upper end of U-shaped frame is equipped with L-shaped clamping slot, the inside top surface of U-shaped frame is integrally formed with positioning ring, the outside of positioning ring is equipped with corrugated rubber sleeve.The utility model sets up corrugated rubber sleeve and metal sleeve, can be set in the outside of abutting bolt, and the upper end of corrugated rubber sleeve abuts to the bottom surface of purlin, rainwater on the surface of purlin cannot drip to the outside of abutting bolt and U-shaped frame junction, can make between abutting bolt and U-shaped frame keep smooth, prolong the service life of clasp structure, guarantee the dismounting convenience of clasp structure.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic bracket technology, specifically a waterproof fixing buckle for photovoltaic bracket roofs. Background Technology

[0002] A photovoltaic (PV) support frame is a frame installed on the bottom of a PV panel and can be connected to the top of a steel structure to provide support and fixation for the PV panel installation.

[0003] Existing photovoltaic (PV) mounting systems are installed on steel structures using U-shaped brackets. During installation, the U-shaped bracket is fitted under the bottom of the steel structure, with its upper end wedged into the inside of the PV mounting system. By tightening bolts, the upper end of the bolts abuts against the bottom surface of the steel structure. As the bolts rotate, they pull the PV mounting system downwards, thus fixing it to the steel structure. However, the bolts are directly exposed to the environment. When it rains, rainwater drips down the steel structure, and over time, the connection between the bolts and the U-shaped bracket corrodes, making the bolts difficult to turn. When the PV panels are damaged, the PV mounting system cannot be easily removed from the steel structure, resulting in significant limitations in the use of the device.

[0004] Therefore, in order to solve the above problems, a waterproof fixing clip for photovoltaic brackets on the roof is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof fixing buckle for photovoltaic brackets on roofs, in order to solve the problem mentioned in the background art where the bolts of the buckles are directly exposed to the environment. When it rains, rainwater drips down the steel structure, and over time, it will corrode the connection between the bolts and the U-shaped frame, making the bolts difficult to turn. When the photovoltaic panels are damaged, the photovoltaic bracket cannot be easily removed from the steel structure, resulting in significant limitations in the use of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof fixing buckle for a photovoltaic bracket roof, comprising: a purlin, a C-shaped frame installed on the top surface of the purlin, and a photovoltaic panel installed on the top surface of the C-shaped frame;

[0007] The purlin is equipped with a snap-fit ​​structure, which includes a U-shaped frame. The U-shaped frame is sleeved on the outer side of the bottom end of the purlin. An L-shaped groove is opened at the upper end of the U-shaped frame. A positioning ring is integrally formed on the top inner side of the U-shaped frame. A corrugated rubber sleeve is snapped on the outer side of the positioning ring. A metal sleeve is integrally formed on the bottom surface of the U-shaped frame. A threaded groove is opened in the middle of the U-shaped frame. A tightening bolt is movably installed on the inner side of the threaded groove through the thread. A rubber plug is snapped on the bottom inner side of the metal sleeve.

[0008] Preferably, the L-shaped slot is engaged at the bottom end of the C-shaped frame.

[0009] Preferably, the positioning ring, corrugated rubber sleeve, metal sleeve, and threaded groove are coaxially arranged.

[0010] Preferably, the top surface of the corrugated rubber sleeve abuts against the bottom surface of the purlin.

[0011] Preferably, the bottom end of the clamping bolt is located inside the metal sleeve, the middle part of the clamping bolt passes through the U-shaped frame via a threaded groove, and the top surface of the clamping bolt abuts against the bottom surface of the purlin.

[0012] Preferably, the rubber plug is located below the tightening bolt.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a corrugated rubber sleeve and a metal sleeve, this utility model can be fitted onto the outside of the clamping bolt, and the upper end of the corrugated rubber sleeve abuts against the bottom surface of the purlin. Rainwater on the purlin surface cannot drip onto the outside of the connection between the clamping bolt and the U-shaped frame, which can keep the clamping bolt and the U-shaped frame smooth, extend the service life of the buckle structure, and ensure the convenience of the buckle structure for disassembly and assembly.

[0014] This utility model features a snap-fit ​​structure. A C-shaped bracket is mounted on the top surface of two sets of purlins. The bottom end of the corrugated rubber sleeve is secured to the outside of the positioning ring, and a U-shaped bracket is secured from the bottom to the outside of the purlin. An L-shaped groove is secured to the outside of the bottom end of the C-shaped bracket. At this point, the top surface of the corrugated rubber sleeve abuts against the bottom surface of the purlin. A clamping bolt is inserted into the metal sleeve, and by rotating the clamping bolt, it is screwed into the threaded groove. The upper end of the clamping bolt protrudes from the inside of the U-shaped bracket through the threaded groove. The upper end of the clamping bolt can pass inside the corrugated rubber sleeve, and the top surface of the clamping bolt abuts against the bottom of the purlin. Continue rotating the tightening bolt. The tightening bolt will cause the U-shaped bracket to descend on the outside of the purlin. As the U-shaped bracket descends, it will cause the C-shaped bracket to press against the top surface of the purlin, thus fixing the C-shaped bracket to the top surface of the purlin. Finally, insert the rubber plug into the inside of the metal sleeve from the bottom to seal the inside of the metal sleeve. The corrugated rubber sleeve, together with the metal sleeve, can protect the tightening bolt, preventing rainwater from dripping onto the connection between the tightening bolt and the U-shaped bracket. This allows the tightening bolt and the U-shaped bracket to slide smoothly, extending the service life of the snap-fit ​​structure and ensuring the ease of assembly and disassembly of the snap-fit ​​structure. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the structure of this utility model;

[0017] Figure 3 This is an exploded view of the snap-fit ​​structure of this utility model;

[0018] Figure 4 This is a front sectional view of the purlin, C-shaped frame, and U-shaped frame of this utility model.

[0019] In the diagram: 1. Purlin; 11. C-shaped frame; 12. Photovoltaic panel; 2. Snap-fit ​​structure; 21. U-shaped frame; 22. L-shaped slot; 23. Positioning ring; 24. Corrugated rubber sleeve; 25. Metal sleeve; 26. Threaded groove; 27. Tightening bolt; 28. Rubber plug. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model provides an embodiment of a waterproof roof fixing clip for photovoltaic brackets:

[0022] The purlin 1, C-shaped frame 11, photovoltaic panel 12 and U-shaped frame 21 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0023] A waterproof roof fixing clip for photovoltaic brackets includes: a purlin 1, a C-shaped frame 11 installed on the top surface of the purlin 1, and a photovoltaic panel 12 installed on the top surface of the C-shaped frame 11;

[0024] A snap-fit ​​structure 2 is installed on the purlin 1. The snap-fit ​​structure 2 includes a U-shaped frame 21, which is sleeved on the outer side of the bottom end of the purlin 1. An L-shaped groove 22 is opened at the upper end of the U-shaped frame 21. A positioning ring 23 is integrally formed on the inner top surface of the U-shaped frame 21. A corrugated rubber sleeve 24 is snapped on the outer side of the positioning ring 23. A metal sleeve 25 is integrally formed on the bottom surface of the U-shaped frame 21. A threaded groove 26 is opened in the middle of the U-shaped frame 21. A tightening screw is installed on the inner side of the threaded groove 26 through the thread. A rubber plug 28 is fitted into the inner bottom of the bolt 27 and the metal sleeve 25. The corrugated rubber sleeve 24, in conjunction with the metal sleeve 25, can be fitted onto the outside of the tightening bolt 27. The upper end of the corrugated rubber sleeve 24 abuts against the bottom surface of the purlin 1. Rainwater on the surface of the purlin 1 cannot drip onto the outside of the connection between the tightening bolt 27 and the U-shaped frame 21. This allows the tightening bolt 27 and the U-shaped frame 21 to maintain smoothness, extending the service life of the buckle structure 2 and ensuring the ease of assembly and disassembly of the buckle structure 2.

[0025] Furthermore, the L-shaped slot 22 is engaged at the bottom end of the C-shaped frame 11, and the L-shaped slot 22 provides conditions for the connection between the U-shaped frame 21 and the C-shaped frame 11.

[0026] Furthermore, the positioning ring 23, the corrugated rubber sleeve 24, the metal sleeve 25 and the threaded groove 26 are coaxially arranged, and the tightening bolt 27 installed inside the threaded groove 26 can be inserted inside the corrugated rubber sleeve 24 and the metal sleeve 25.

[0027] Furthermore, the top surface of the corrugated rubber sleeve 24 abuts against the bottom surface of the purlin 1, and the corrugated rubber sleeve 24 can seal the space between the bottom end of the U-shaped frame 21 and the purlin 1 to prevent rainwater from entering and ensure that the tightening bolt 27 is dry.

[0028] Furthermore, the bottom end of the clamping bolt 27 is located inside the metal sleeve 25, and the middle part of the clamping bolt 27 passes through the U-shaped frame 21 via the threaded groove 26. The top surface of the clamping bolt 27 abuts against the bottom surface of the purlin 1. The rotation of the clamping bolt 27 causes the U-shaped frame 21 to move downward away from the purlin 1, thereby driving the C-shaped frame 11 to fit against the purlin 1 and providing power for fixing the C-shaped frame 11 on the purlin 1.

[0029] Furthermore, the rubber plug 28 is located below the clamping bolt 27. The rubber plug 28 can block the clamping bolt 27 inside the metal sleeve 25 and keep the inside of the metal sleeve 25 sealed.

[0030] Working principle: During installation, the C-shaped bracket 11 is placed on the top surface of the two sets of purlins 1. The bottom end of the corrugated rubber sleeve 24 is secured to the outside of the positioning ring 23, and the U-shaped bracket 21 is secured to the outside of the purlin 1 from the bottom, so that the L-shaped groove 22 is secured to the outside of the bottom end of the C-shaped bracket 11. At this time, the top surface of the corrugated rubber sleeve 24 abuts against the bottom surface of the purlin 1. The clamping bolt 27 is inserted into the inside of the metal sleeve 25, and the clamping bolt 27 is rotated to screw the clamping bolt 27 into the inside of the threaded groove 26. The upper end of the clamping bolt 27 protrudes from the inside of the U-shaped bracket 21 through the threaded groove 26. The upper end of the clamping bolt 27 can be inserted into the inside of the corrugated rubber sleeve 24, and the top surface of the clamping bolt 27 abuts against the bottom surface of the purlin 1. Continue rotating the tightening bolt 27. The tightening bolt 27 will drive the U-shaped frame 21 to descend outside the purlin 1. When the U-shaped frame 21 descends, it will drive the C-shaped frame 11 downward to press against the top surface of the purlin 1, thus fixing the C-shaped frame 11 to the top surface of the purlin 1. Finally, the rubber plug 28 is inserted into the inside of the metal sleeve 25 from the bottom, which can seal the inside of the metal sleeve 25 and keep the inside of the metal sleeve 25 sealed. The corrugated rubber sleeve 24, together with the metal sleeve 25, can shield and protect the tightening bolt 27, so that rainwater cannot drip onto the connection between the tightening bolt 27 and the U-shaped frame 21, which can keep the tightening bolt 27 and the U-shaped frame 21 smooth, extend the service life of the buckle structure 2, and ensure the convenience of the buckle structure 2 for disassembly and assembly.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A waterproof roof mounting clip for photovoltaic brackets, comprising: A purlin (1) is provided with a C-shaped frame (11) on its top surface and a photovoltaic panel (12) is provided on the top surface of the C-shaped frame (11). Its features are: The purlin (1) is equipped with a snap-fit ​​structure (2), which includes a U-shaped frame (21). The U-shaped frame (21) is sleeved on the outer side of the bottom end of the purlin (1). The upper end of the U-shaped frame (21) is provided with an L-shaped slot (22). The inner top surface of the U-shaped frame (21) is integrally formed with a positioning ring (23). The outer side of the positioning ring (23) is fitted with a corrugated rubber sleeve (24). The bottom surface of the U-shaped frame (21) is integrally formed with a metal sleeve (25). The middle part of the U-shaped frame (21) is provided with a threaded groove (26). The inner side of the threaded groove (26) is movably installed with a tightening bolt (27) through a thread. The inner bottom end of the metal sleeve (25) is fitted with a rubber plug (28).

2. The waterproof roof fixing clip for photovoltaic brackets according to claim 1, characterized in that: The L-shaped slot (22) is engaged at the bottom of the C-shaped frame (11).

3. The waterproof roof fixing clip for photovoltaic brackets according to claim 1, characterized in that: The positioning ring (23), corrugated rubber sleeve (24), metal sleeve (25) and threaded groove (26) are coaxially arranged.

4. The waterproof roof fixing clip for photovoltaic brackets according to claim 1, characterized in that: The top surface of the corrugated rubber sleeve (24) abuts against the bottom surface of the purlin (1).

5. A waterproof roof fixing clip for photovoltaic brackets according to claim 1, characterized in that: The bottom end of the clamping bolt (27) is located inside the metal sleeve (25), the middle part of the clamping bolt (27) passes through the U-shaped frame (21) via the threaded groove (26), and the top surface of the clamping bolt (27) abuts against the bottom surface of the purlin (1).

6. The waterproof roof fixing clip for photovoltaic brackets according to claim 1, characterized in that: The rubber plug (28) is located on the underside of the clamping bolt (27).