Thin film type heating film test fixture

Abstract

The utility model relates to the technical field of heating film testing devices, in particular to a thin film type heating film testing clamp which comprises a metal supporting plate and a heating film, magnetic supporting columns are fixedly arranged at the four corners of the upper end of the metal supporting plate, the heating film is placed at the upper ends of the magnetic supporting columns, and heating film electrodes are arranged on the two sides of the heating film. Metal positioning buckles are arranged at the positions, located on the four magnetic supporting columns, of the upper end of the heating film, and an adjustable power source is arranged on one side of the metal supporting plate. According to the utility model, the heating film can be suspended in the air in the testing process, heat is mainly dissipated to the surrounding air, and the problem of rapid heat dissipation caused by contact with objects such as a table top is avoided, so that more uniform surface heating can be realized, various performance parameters such as temperature rise speed, temperature uniformity and power consumption of the heating film can be accurately measured, and the testing efficiency is improved. And a reliable test means is provided for research and development, production quality control and performance optimization of thin film type heating films.

Description

Technical Field

[0001] This utility model relates to the technical field of heating film testing devices, specifically a thin-film heating film testing fixture. Background Technology

[0002] Transparent heating films have attracted widespread attention in outdoor electronic devices, automotive windows, and other fields due to their high transmittance and high heating efficiency. They are mainly composed of transparent electrode materials such as copper metal mesh, silver nanowires, ITO, graphene, and carbon nanotubes attached to the surface of a film substrate. These substrates are generally very thin, ranging from several hundred to tens of micrometers in thickness. In existing technologies, when testing thin-film heating films, the film is typically placed directly on a table or other flat surface, and then heated by connecting electrodes to a power source.

[0003] However, this placement method has several drawbacks. Firstly, the heating film's contact with the tabletop causes rapid heat conduction, resulting in significant heat loss and uneven temperature distribution on the film's surface, making it difficult to accurately measure its true heating performance and temperature distribution characteristics. Secondly, due to the tabletop's heat dissipation, the heating film requires more electrical energy to maintain the set temperature. This not only increases testing costs but may also damage the tabletop due to heat buildup, affecting the accuracy and reliability of the test data and failing to meet the demands for high-precision testing of thin-film heating films. Therefore, developing a testing fixture for thin-film heating films that effectively solves these problems is of significant practical importance. Utility Model Content

[0004] The purpose of this invention is to provide a thin-film heating film testing fixture that avoids the problem of rapid heat loss caused by contact with objects such as desktops, thereby enabling more uniform surface heating and accurate measurement of various performance parameters of the heating film, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A thin-film heating film testing fixture includes a metal support plate and a heating film. Magnetic support columns are fixed at the four corners of the upper end of the metal support plate. The heating film is placed on the upper end of the magnetic support columns. Heating film electrodes are provided on both sides of the heating film. Metal positioning buckles are provided at the upper end of the heating film at the four magnetic support columns. An adjustable power supply is provided on one side of the metal support plate. An elastic copper sheet is provided at the upper end of the metal support plate corresponding to the position of the heating film electrodes through a connecting mechanism. The elastic copper sheet is connected to the adjustable power supply through a wire.

[0007] As a further embodiment of this utility model, the connecting mechanism includes a hollow column and a sliding rod. The upper end of the hollow column is provided with a sliding hole, and the sliding rod is slidably disposed in the sliding hole. The upper end of the sliding rod is fixedly connected to an elastic copper sheet, and the lower end of the sliding rod is fixedly provided with a circular push block. The lower end of the circular push block is fixedly provided with a spring, and the lower end of the spring is fixedly connected to the lower end of the hollow column.

[0008] As a further embodiment of this invention, the diameter of the circular pusher is larger than the diameter of the sliding hole.

[0009] As a further embodiment of this invention, the elastic copper sheet is configured to be arc-shaped.

[0010] As a further embodiment of this invention, the spring is always in a compressed state.

[0011] As a further embodiment of this utility model, the side wall of the metal support plate is provided with two suspension hooks.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This thin-film heating film testing fixture, comprising a heating film, a suspension hook, wires, a hollow column, heating film electrodes, a metal support plate, an adjustable power supply, a magnetic support column, a metal positioning buckle, a spring, a circular push block, an elastic copper sheet, and a slide bar, allows the thin-film heating film to suspend in the air during testing. Heat is primarily dissipated into the surrounding air, avoiding rapid heat loss due to contact with objects such as tabletops. This enables more uniform surface heating and accurate measurement of various performance parameters of the heating film, such as heating rate, temperature uniformity, and power consumption. It provides a reliable testing method for the research and development, production quality control, and performance optimization of thin-film heating films. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a thin-film heating film testing fixture.

[0015] Figure 2 This is a side view schematic diagram of a thin-film heating film testing fixture.

[0016] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0017] In the diagram: 1. Heating film; 2. Suspension hook; 3. Wire; 4. Hollow column; 5. Heating film electrode; 6. Metal support plate; 7. Adjustable power supply; 8. Magnetic support column; 9. Metal positioning buckle; 10. Spring; 11. Circular push block; 12. Elastic copper sheet; 13. Slide rod. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 3 This utility model provides a technical solution:

[0020] A thin-film heating film test fixture includes a metal support plate 6 and a heating film 1. Magnetic support columns 8 are fixed at the four corners of the upper end of the metal support plate 6. The heating film 1 is placed on the upper end of the magnetic support columns 8. Heating film electrodes 5 are provided on both sides of the heating film 1. Metal positioning buckles 9 are provided at the upper end of the heating film 1 at the four magnetic support columns 8 to support and fix the four corners of the heating film 1. They are magnetic and can move freely on the metal support plate 6 to accommodate heating films 1 of different sizes. An adjustable power supply 7 is provided on one side of the metal support plate 6. An elastic copper sheet 12 is provided at the upper end of the metal support plate 6 corresponding to the position of the heating film electrodes 5 through a connecting mechanism. The elastic copper sheet 12 is connected to the adjustable power supply 7 through a wire 3. The elastic copper sheet 12 and the connecting mechanism enable the adjustable power supply 7 to supply power to the heating film 1.

[0021] Reference Figure 2 and Figure 3 The connecting mechanism includes a hollow column 4 and a sliding rod 13. The upper end of the hollow column 4 is provided with a sliding hole, and the sliding rod 13 is slidably disposed in the sliding hole. The upper end of the sliding rod 13 is fixedly connected to the elastic copper sheet 12, and the lower end of the sliding rod 13 is fixedly provided with a circular push block 11. The lower end of the circular push block 11 is fixedly provided with a spring 10, and the lower end of the spring 10 is fixedly connected to the lower end of the hollow column 4. The spring 10 is always in a compressed state and pushes the circular push block 11 upward. The diameter of the circular push block 11 is larger than the diameter of the sliding hole, which can prevent the sliding rod 13 from disengaging from the sliding hole.

[0022] Reference Figure 2 The elastic copper sheet 12 is set in an arc shape to ensure that the middle part of the elastic copper sheet 12 always abuts against the heating film electrode 5.

[0023] Reference Figure 1 The metal support plate 6 has two suspension hooks 2 on its side wall, which allow the metal support plate 6 to be laid flat or suspended vertically in the air.

[0024] In use, firstly, adjust the positions of the four magnetic support posts 8 on the metal support plate 6 according to the size of the heating film 1, so that it can accurately clamp the four corners of the heating film 1, ensuring that the heating film 1 is fixed flat on the fixture, avoiding wrinkles or twisting that would affect the test results. Then, the elastic copper sheet 12 is tightly connected to the surface electrode of the heating film 1 to ensure good conductivity, so as to stably supply power to the heating film 1. After the connection is completed, check the reliability of the connection to prevent loosening or poor contact during the test. Suspend the metal support plate 6 and the heating film 1 fixed on it in a suitable test space through the suspension hook 2, ensuring that the suspension is stable and that a sufficient safe distance is maintained from surrounding objects to avoid the test process being affected by accidental collisions or other factors.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thin-film heating film testing fixture, comprising a metal support plate (6) and a heating film (1), characterized in that: Magnetic support columns (8) are fixed at the four corners of the upper end of the metal support plate (6). The heating film (1) is placed on the upper end of the magnetic support columns (8). Heating film electrodes (5) are provided on both sides of the heating film (1). Metal positioning buckles (9) are provided at the upper end of the heating film (1) at the four magnetic support columns (8). An adjustable power supply (7) is provided on one side of the metal support plate (6). An elastic copper sheet (12) is provided at the position corresponding to the heating film electrode (5) at the upper end of the metal support plate (6) through a connecting mechanism. The elastic copper sheet (12) is connected to the adjustable power supply (7) through a wire (3).

2. The thin-film heating film testing fixture according to claim 1, characterized in that: The connecting mechanism includes a hollow column (4) and a sliding rod (13). The upper end of the hollow column (4) is provided with a sliding hole. The sliding rod (13) is slidably disposed in the sliding hole. The upper end of the sliding rod (13) is fixedly connected to an elastic copper sheet (12). The lower end of the sliding rod (13) is fixedly provided with a circular push block (11). The lower end of the circular push block (11) is fixedly provided with a spring (10). The lower end of the spring (10) is fixedly connected to the lower end of the hollow column (4).

3. A thin-film heating film testing fixture according to claim 2, characterized in that: The diameter of the circular pusher (11) is larger than the diameter of the sliding hole.

4. A thin-film heating film testing fixture according to claim 3, characterized in that: The elastic copper sheet (12) is set in an arc shape.

5. A thin-film heating film testing fixture according to claim 4, characterized in that: The spring (10) is always in a compressed state.

6. A thin-film heating film testing fixture according to claim 5, characterized in that: The side wall of the metal support plate (6) is provided with two suspension hooks (2).

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