Novel corner key for frame fixing and capable of achieving transverse cascading

Abstract

The invention relates to a novel corner key for frame fixing and capable of achieving transverse cascading, and belongs to the technical field of photovoltaic equipment. The corner key comprises a first insertion plate and a second insertion plate, a key groove is formed in a narrow long edge of the first insertion plate in the length direction, and a key groove is formed in the edge opposite to the narrow long edge in the length direction; one end of the first insertion plate is hinged to one end of the second insertion plate, and a torsion spring is arranged on the hinge portion of the first insertion plate and the second insertion plate; the first insertion plate and the second insertion plate are each of an inner hollow structure, and multiple reinforcing ribs are disposed in the inner hollow structures. By means of the torsion spring having a closing function on the insertion plates, clamping force of the corner key to a frame lasts, seamless connection between corner keys is achieved through matching of key bodies and grooves on the corner keys to meet requirements of some non-standard elements, and adaptability of the corner key is improved.

Description

technical field [0001] The invention relates to a horizontally cascadable corner key for fixing a frame, which belongs to the technical field of photovoltaic equipment. Background technique [0002] As we all know, photovoltaic cells and their related components are mostly soft or fragile materials. How to ensure the normal operation of photovoltaic components in harsh outdoor working environments. Usually, the method of increasing the mechanical strength is adopted, but we cannot meet our requirements by simply increasing the mechanical strength of the photovoltaic module itself. Therefore, we consider a simpler way, which is to add a frame to the photovoltaic module. [0003] As a frame, the integrated structure is not a good solution due to the difficulty of processing, installation, molding and other problems, so we adopt the method of multi-frame combination, and the corner key is often used in the field of photovoltaic equipment technology to connect the two frames....

AI Technical Summary

Problems solved by technology

However, this treatment also faces a new problem, how to ensure the stress retention of the teeth under the long-term deformation state

If this problem cannot be solved, the corner key will gradually lose its clamping force on the frame during use, making the overall structure of the frame loose, and eventually the protective structure of the photovoltaic cells with the frame as the fixed main body may fall apart, resulting in economic losses or other damages. major hazard

[0006] And the existing corner keys are often only applicable to specific borders, or standard size borders, and it is often difficult to adapt to the size of some non-standard borders. It is a problem worth considering to improve the wide applicability of the corner key to the frame under the premise of proper function

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