Coating thickness gauge and application of sensor
By using a large-size display screen and a thicker transparent lens in the coating thickness gauge, combined with a sliding spring and micro switch made of 60Si2Mn steel, the problems of easy damage to the display screen, rapid wear of the spring, and short life of the trigger switch in traditional coating thickness gauges have been solved, achieving higher measurement accuracy and a better user experience.
Patent Information
- Application Number
- CN202411693291.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional coating thickness gauges have small and easily damaged displays, rapid wear of spring components, and short lifespan of trigger switches, which affect measurement accuracy and user experience.
It features a large display screen and a thickened transparent lens design, uses 60Si2Mn steel to make the sliding spring, and employs a micro switch as the trigger switch, combined with a multi-layer PCB board structure and an anti-slip feel design.
It improves the intuitiveness of data observation and the lifespan of the instrument, enhances measurement accuracy and user experience, and extends the instrument's lifespan.
Smart Images

Figure CN122083876A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coating thickness measurement technology, specifically to the application of a coating thickness gauge and sensor. Background Technology
[0002] A coating thickness gauge, also known as a film thickness gauge, plating thickness gauge, or paint film thickness gauge, is a professional device for non-destructive testing of the thickness of coatings on metal substrates. It is widely used as a precision testing tool in industrial and scientific research fields. This device can efficiently measure coating thickness to determine whether it meets requirements and offers good convenience. However, traditional coating thickness gauges still have shortcomings. First, traditional coating thickness gauges typically only have one display screen to show data, limiting their applicability. Furthermore, most commercially available displays are small and thin, resulting in poor data observation and increased susceptibility to breakage. Second, with frequent use, the spring components in traditional coating thickness gauges wear out quickly, significantly reducing the instrument's lifespan. Third, traditional coating thickness gauges usually use a switch as a signal triggering device during measurement, but these switches often have short lifespans and low triggering accuracy, affecting measurement accuracy and user experience. Therefore, designing a coating thickness gauge and sensor application is essential. Summary of the Invention
[0003] The purpose of this invention is to provide an application of a coating thickness gauge and sensor to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a coating thickness gauge, comprising a front shell, a first transparent lens fixedly connected to the front shell, a top display screen fixedly connected to the first transparent lens, the top display screen fixedly connected to the front shell, a first display screen mounting bracket fixedly connected to the front shell, the first display screen mounting bracket fixedly connected to the top display screen, the first display screen mounting bracket fixedly connected to a bottom shell, a battery cover snapped onto the bottom shell, the battery cover tightly attached to a battery pack, the battery pack tightly attached to a battery base, battery electrodes fixedly connected to the battery base, the battery electrodes symmetrically attached to the battery pack, and the battery base fixedly connected to a main PCB board.
[0005] As a further technical solution of the present invention, the main PCB board is fixedly connected to the front shell, and the front shell is fixedly connected to the bottom shell.
[0006] As a further technical solution of the present invention, a second display screen mounting bracket is fixedly connected to the main PCB board, the second display screen mounting bracket is fixedly connected to the front shell, a front display screen is fixedly connected to the front shell, the front display screen is fixedly connected to the second display screen mounting bracket, a second transparent lens is fixedly connected to the front display screen, and the second transparent lens is fixedly connected to the front shell.
[0007] As a further technical solution of the present invention, the faceplate is provided with an operation button, the operation button penetrates the faceplate and is attached to the control button, the control button is fixedly connected to the main PCB board, one end of the main PCB board is tightly attached to the spring base, and the spring base is fixedly connected to the faceplate.
[0008] As a further technical solution of the present invention, one end of a sliding spring is fixedly connected to the spring base, the other end of the sliding spring is fixedly connected to the sub-PCB board, the sub-PCB board is slidably connected to the sliding cover, and the sliding cover is fixedly connected to the front shell.
[0009] As a further technical solution of the present invention, a limiting plate is fixedly connected to the front shell, the limiting plate is fixedly connected to the bottom shell, a probe is slidably connected in the limiting plate, the probe is fixedly connected to the secondary PCB board, a trigger switch is fixedly connected to the secondary PCB board, one end of a flexible flat cable is fixedly connected to the secondary PCB board, the other end of the flexible flat cable is fixedly connected to the main PCB board, a buzzer is fixedly connected to the main PCB board, a type-C port is fixedly connected to the main PCB board, a type-C mounting port is fixedly connected to the type-C port, the type-C mounting port is located on the front shell, the type-C mounting port is located on the bottom shell, a connecting bolt is fixedly connected to the bottom shell, the connecting bolt is fixedly connected to the connecting seat, the connecting seat is fixedly connected to the front shell, an anti-slip tactile area is provided on the front shell, the anti-slip tactile area is fixedly located on the bottom shell, a first mounting hole is provided on the front shell, a second transparent lens is fixedly connected in the first mounting hole, a second mounting hole is provided on the front shell, the second mounting hole is located on the bottom shell, and a first transparent lens is fixedly connected in the second mounting hole.
[0010] An application of a coating thickness gauge sensor includes the following steps: Step 1, display screen installation; Step 2, overall assembly; Step 3, measurement.
[0011] In step one above, the two displays are installed at the designed locations;
[0012] In step two above, the spring and trigger components are installed in their designed positions.
[0013] In step three above, an instrument is used to measure the coating to be tested.
[0014] As a further technical solution of the present invention, in step one, the first transparent lens and the top display screen are mounted on the first display screen mounting bracket and installed in the front shell through the second mounting hole. At the same time, the second transparent lens and the front display screen are mounted on the second display screen mounting bracket and installed in the front shell and the bottom shell through the first mounting hole. The top display screen is 1.3 inches in size, the first transparent lens is 3.0 mm thick, the front display screen is 2.0 inches in size, and the second transparent lens is 2.0 mm thick. The three batteries are combined and assembled into a battery pack, which is then fastened to the battery electrode and the battery base. The battery cover is then fastened to the bottom shell to complete the sealing and fixing of the battery pack. The main PCB board and the sub-PCB board are connected by a flexible flat cable and installed in the front shell.
[0015] As a further technical solution of the present invention, in step two, 60Si2Mn steel is used as raw material. After isothermal quenching, it is tempered and then shot peened to make a sliding spring. Probes and sliding springs are installed at both ends of the sub-PCB board. A micro switch with a small contact interval and a quick-acting mechanism is used as a trigger switch. The trigger switch is set on the sub-PCB board, and control buttons are set on the main PCB board. Corresponding operation buttons are set on the front shell. The front shell and the bottom shell are sealed and connected by connecting bolts and connecting seats.
[0016] As a further technical solution of the present invention, in step three, the probe is checked to ensure it is clean and undamaged, and that it can make close contact with the surface to be measured. The probe is then placed stably on the surface of the coating to be measured, ensuring that it is in close contact with the coating and perpendicular to it. At this time, the probe and the sub-PCB board move under the action of the sliding spring and the limit of the sliding cover, which drives the trigger switch to move and be pressed in response. The measurement signal is collected and processed by the sub-PCB board and transmitted to the main PCB board through the flexible flat cable. The main PCB board further processes the data and displays it on the top display screen and the front display screen. After the measurement is completed, the probe is moved away from the coating to be measured. The trigger switch, the sub-PCB board and the probe return to the initial position by the action of the sliding spring.
[0017] Compared with the prior art, the beneficial effects of this invention are as follows: The application of this coating thickness gauge and sensor involves mounting a first transparent lens and a top display screen on a first display screen mounting bracket, and then mounting them in the front housing through a second mounting hole. Simultaneously, a second transparent lens and a front display screen are mounted on a second display screen mounting bracket, and then mounted in the front and bottom housings through the first mounting hole. The top display screen is 1.3 inches in size, the first transparent lens is 3.0 mm thick, the front display screen is 2.0 inches in size, and the second transparent lens is 2.0 mm thick. Using two displays to show data increases the applicability, and the size and thickness exceed those of commercially available products, making data observation more intuitive and less difficult. The instrument is designed to withstand impact damage. Using 60Si2Mn steel as raw material, the steel undergoes isothermal quenching, tempering, and shot peening to produce sliding springs. Probes and sliding springs are installed at both ends of the secondary PCB board, ensuring the strength of the sliding springs under frequent use and extending the instrument's lifespan. Microswitches with micro-intervals and quick-acting mechanisms are used as trigger switches, with the trigger switch located on the secondary PCB board and control buttons on the main PCB board. Corresponding operation buttons are also located on the front and back shells. The front and back shells are sealed together using connecting bolts and connectors. The microswitches used as trigger switches have a lifespan of up to 1 million cycles and high trigger accuracy, improving measurement accuracy and user experience. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0019] Figure 2 This is a schematic diagram of the rear view structure of the present invention;
[0020] Figure 3 This is an exploded view of part of the structure of the present invention;
[0021] Figure 4 This is a schematic diagram showing the position of the buzzer in this invention;
[0022] Figure 5 This is a side view of the structural cross-section in this invention;
[0023] Figure 6 This is a flowchart of the method of the present invention;
[0024] In the diagram: 1. Front shell; 2. First transparent lens; 3. Top display screen; 4. First display screen mounting bracket; 5. Bottom shell; 6. Battery cover; 7. Battery pack; 8. Main PCB board; 9. Battery terminals; 10. Second display screen mounting bracket; 11. Front display screen; 12. Second transparent lens; 13. Operation button; 14. Control button; 15. Spring base; 16. Sliding spring; 17. Secondary PCB board; 18. Sliding cover; 19. Limiting plate; 20. Probe; 21. Trigger switch; 22. Flexible ribbon cable; 23. Buzzer; 24. Type-C port; 25. Type-C mounting port; 26. Connecting bolt; 27. Connecting base; 28. Anti-slip grip; 29. First mounting hole; 30. Second mounting hole; 31. Battery base. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] Please see the appendix Figure 1 - Appendix Figure 5An embodiment of the present invention provides a coating thickness gauge, comprising a front shell 1, a first transparent lens 2 fixedly connected to the front shell 1, a top display screen 3 fixedly connected to the first transparent lens 2, the top display screen 3 fixedly connected to the front shell 1, a first display screen mounting bracket 4 fixedly connected to the front shell 1, the first display screen mounting bracket 4 fixedly connected to the top display screen 3, the first display screen mounting bracket 4 fixedly connected to the bottom shell 5, a battery cover 6 snapped onto the bottom shell 5, the battery cover 6 tightly attached to a battery pack 7, the battery pack 7 tightly attached to a battery base 31, battery electrode plates 9 fixedly connected to the battery base 31, the battery electrode plates 9 symmetrically attached to the battery pack 7, the battery base 31 fixedly connected to a main PCB board 8, and the main PCB board 8 fixedly... A second display screen bracket 10 is fixedly connected to the main PCB board 8 and to the front shell 1. A front display screen 11 is fixedly connected to the front shell 1 and to the second display screen bracket 10. A second transparent lens 12 is fixedly connected to the front display screen 11 and to the front shell 1. An operation button 13 is provided on the front shell 1 and extends through the shell 1, fitting snugly against a control button 14. The control button 14 is fixedly connected to the main PCB board 8. One end of the main PCB board 8 is tightly attached to a spring base 15, which is fixedly connected to the front shell 1. One end of a sliding spring 16 is fixedly connected to PCB 15, and the other end of the sliding spring 16 is fixedly connected to the sub-PCB board 17. The sub-PCB board 17 is slidably connected to the sliding cover 18, and the sliding cover 18 is fixedly connected to the front shell 1. A limit plate 19 is fixedly connected to the front shell 1, and the limit plate 19 is fixedly connected to the bottom shell 5. A probe 20 is slidably connected to the limit plate 19, and the probe 20 is fixedly connected to the sub-PCB board 17. A trigger switch 21 is fixedly connected to the sub-PCB board 17, and one end of a flexible flat cable 22 is fixedly connected to the sub-PCB board 17. The other end of the flexible flat cable 22 is fixedly connected to the main PCB board 8, and a buzzer 23 is fixedly connected to the main PCB board 8. A type of... Type-C port 24 is fixedly connected to Type-C mounting port 25, which is located on the front shell 1 and the bottom shell 5. A connecting bolt 26 is fixedly connected to the bottom shell 5 and is fixedly connected to a connecting seat 27. The connecting seat 27 is fixedly connected to the front shell 1. An anti-slip grip position 28 is provided on the front shell 1 and is fixedly located on the bottom shell 5. A first mounting hole 29 is provided on the front shell 1 and is fixedly connected to a second transparent lens 12. A second mounting hole 30 is provided on the front shell 1 and is located on the bottom shell 5. A first transparent lens 2 is fixedly connected to the second mounting hole 30.
[0027] Please see the appendix Figure 6The present invention provides an embodiment of the application of a coating thickness gauge sensor, comprising the following steps: Step 1, installation of the display screen; Step 2, overall assembly; Step 3, measurement;
[0028] In step one above, the two displays are installed in their designed positions. The first transparent lens 2 and the top display 3 are installed on the first display mounting bracket 4 and then installed in the front shell 1 through the second mounting hole 30. At the same time, the second transparent lens 12 and the front display 11 are installed on the second display mounting bracket 10 and then installed in the front shell 1 and the bottom shell 5 through the first mounting hole 29. The top display 3 is 1.3 inches in size, the first transparent lens 2 is 3.0 mm thick, the front display 11 is 2.0 inches in size, and the second transparent lens 12 is 2.0 mm thick. The three batteries are combined and assembled into a battery pack 7 and fastened to the battery electrode 9 and the battery base 31. The battery cover 6 is then fastened to the bottom shell 5 to complete the sealing and fixing of the battery pack 7. The main PCB board 8 and the secondary PCB board 17 are connected by a flexible flat cable 22 and installed into the front shell 1.
[0029] In step two above, the spring and triggering components are installed in the designed positions. 60Si2Mn steel is used as the raw material. After isothermal quenching, it is tempered and shot peened to make the sliding spring 16. The probe 20 and the sliding spring 16 are installed at both ends of the sub-PCB board 17. A micro switch with a small contact interval and a quick-acting mechanism is used as the trigger switch 21. The trigger switch 21 is set on the sub-PCB board 17. The control button 14 is set on the main PCB board 8, and the corresponding operation button 13 is set on the front shell 1. The front shell 1 and the bottom shell 5 are sealed and connected by the connecting bolt 26 and the connecting seat 27.
[0030] In step three above, the instrument is used to measure the coating to be tested. The probe 20 is checked to ensure it is clean and undamaged, and that it can make close contact with the surface to be tested. The probe 20 is placed stably on the surface of the coating to be tested, ensuring that it is in close contact with the coating and perpendicular to it. At this time, the probe 20 and the sub-PCB board 17 move under the action of the sliding spring 16 and the limit of the sliding cover 18, which drives the trigger switch 21 to move and be pressed in response. The measurement signal is collected and processed by the sub-PCB board 17 and transmitted to the main PCB board 8 through the flexible flat cable 22. The main PCB board 8 further processes the data and displays it through the top display screen 3 and the front display screen 11. After the measurement is completed, the probe 20 is moved away from the coating to be tested. Under the action of the sliding spring 16, the trigger switch 21, the sub-PCB board 17 and the probe 20 return to the initial position.
[0031] Working principle: In use, the first transparent lens 2 and the top display screen 3 are mounted on the first display screen mounting bracket 4 and installed in the front shell 1 through the second mounting hole 30. Simultaneously, the second transparent lens 12 and the front display screen 11 are mounted on the second display screen mounting bracket 10 and installed in the front shell 1 and bottom shell 5 through the first mounting hole 29. The top display screen 3 is 1.3 inches in size, the first transparent lens 2 is 3.0 mm thick, the front display screen 11 is 2.0 inches in size, and the second transparent lens 12 is 2.0 mm thick. Using two displays to display data increases the applicability, and the size and thickness exceed those of products on the market, making data observation more intuitive and less prone to breakage. 60Si2Mn steel is used as the raw material. The material is isothermally quenched, tempered, and shot-peened to make the sliding spring 16. The probe 20 and the sliding spring 16 are installed at both ends of the secondary PCB board 17, ensuring the strength of the sliding spring 16 under frequent use and extending the service life of the instrument. A micro switch with a small contact interval and a quick-acting mechanism is used as the trigger switch 21. The trigger switch 21 is set on the secondary PCB board 17, and the control button 14 is set on the main PCB board 8. The corresponding operation button 13 is set on the front shell 1. The front shell 1 and the bottom shell 5 are sealed and connected by the connecting bolt 26 and the connecting seat 27. The micro switch 21 has a life of up to 1 million cycles and high triggering accuracy, which improves the measurement accuracy and user experience.
[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A coating thickness gauge, comprising a housing (1), characterized in that: A first transparent lens (2) is fixedly connected to the face shell (1), a top display screen (3) is fixedly connected to the first transparent lens (2), the top display screen (3) is fixedly connected to the face shell (1), a first display screen mounting bracket (4) is fixedly connected to the face shell (1), the first display screen mounting bracket (4) is fixedly connected to the top display screen (3), the first display screen mounting bracket (4) is fixedly connected to the bottom shell (5), a battery cover (6) is snapped onto the bottom shell (5), the battery cover (6) is tightly attached to the battery pack (7), the battery pack (7) is tightly attached to the battery base (31), battery electrode plates (9) are fixedly connected to the battery base (31), the battery electrode plates (9) are symmetrically attached to the battery pack (7), and the battery base (31) is fixedly connected to the main PCB board (8).
2. The coating thickness gauge according to claim 1, characterized in that: The main PCB board (8) is fixedly connected to the front shell (1), and the front shell (1) is fixedly connected to the bottom shell (5).
3. The coating thickness gauge according to claim 2, characterized in that: A second display screen mounting bracket (10) is fixedly connected to the main PCB board (8). The second display screen mounting bracket (10) is fixedly connected to the front shell (1). A front display screen (11) is fixedly connected to the front shell (1). The front display screen (11) is fixedly connected to the second display screen mounting bracket (10). A second transparent lens (12) is fixedly connected to the front display screen (11). The second transparent lens (12) is fixedly connected to the front shell (1).
4. A coating thickness gauge according to claim 3, characterized in that: The faceplate (1) is provided with an operation button (13), which passes through the faceplate (1) and is attached to the control button (14). The control button (14) is fixedly connected to the main PCB board (8). One end of the main PCB board (8) is tightly attached to a spring base (15), which is fixedly connected to the faceplate (1).
5. A coating thickness gauge according to claim 4, characterized in that: One end of a sliding spring (16) is fixedly connected to the spring base (15), and the other end of the sliding spring (16) is fixedly connected to the sub-PCB board (17). The sub-PCB board (17) is slidably connected to the sliding cover (18), and the sliding cover (18) is fixedly connected to the face shell (1).
6. A coating thickness gauge according to claim 5, characterized in that: A limiting plate (19) is fixedly connected to the front shell (1). The limiting plate (19) is fixedly connected to the bottom shell (5). A probe (20) is slidably connected in the limiting plate (19). The probe (20) is fixedly connected to the secondary PCB board (17). A trigger switch (21) is fixedly connected to the secondary PCB board (17). One end of a flexible flat cable (22) is fixedly connected to the secondary PCB board (17). The other end of the flexible flat cable (22) is fixedly connected to the main PCB board (8). A buzzer (23) is fixedly connected to the main PCB board (8). A type-c port (24) is fixedly connected to the main PCB board (8). A type-c mounting port (25) is fixedly connected to the type-c port (24). The mounting port (25) is set on the front shell (1), the type-c mounting port (25) is set on the bottom shell (5), the bottom shell (5) is fixedly connected to the connecting bolt (26), the connecting bolt (26) is fixedly connected to the connecting seat (27), the connecting seat (27) is fixedly connected to the front shell (1), the front shell (1) is provided with an anti-slip feel position (28), the anti-slip feel position (28) is fixedly set on the bottom shell (5), the front shell (1) is provided with a first mounting hole (29), the first transparent lens (12) is fixedly connected in the first mounting hole (29), the front shell (1) is provided with a second mounting hole (30), the second mounting hole (30) is set on the bottom shell (5), the second mounting hole (30) is fixedly connected in the second mounting hole (30).
7. An application of a coating thickness gauge sensor, comprising the following steps: Step 1, Display screen installation; Step 2, Overall assembly; Step 3, Measurement; Features: In step one above, the two displays are installed at the designed locations; In step two above, the spring and trigger components are installed in their designed positions. In step three above, an instrument is used to measure the coating to be tested.
8. The application of the coating thickness gauge sensor according to claim 7, characterized in that: In step one, the first transparent lens (2) and the top display screen (3) are mounted on the first display screen mounting bracket (4), and then mounted in the front shell (1) through the second mounting hole (30). At the same time, the second transparent lens (12) and the front display screen (11) are mounted on the second display screen mounting bracket (10), and then mounted in the front shell (1) and the bottom shell (5) through the first mounting hole (29). The top display screen (3) has a size of 1.3 inches, and the first transparent lens (2) has a thickness of... The design is 3.0mm thick, the front display screen (11) is 2.0 inches in size, and the second transparent lens (12) is designed to be 2.0mm thick. The three batteries are combined and assembled into a battery pack (7), and then fastened to the battery electrode (9) and the battery base (31). The battery cover (6) is then fastened to the bottom shell (5) to complete the sealing and fixing of the battery pack (7). The main PCB board (8) and the secondary PCB board (17) are connected by a flexible flat cable (22) and installed into the front shell (1).
9. The application of the coating thickness gauge sensor according to claim 7, characterized in that: In step two, 60Si2Mn steel is used as raw material. After isothermal quenching, it is tempered and shot peened to make a sliding spring (16). Probes (20) and sliding springs (16) are installed at both ends of the sub-PCB board (17). A micro switch with a small contact interval and a quick-acting mechanism is used as a trigger switch (21). The trigger switch (21) is set on the sub-PCB board (17). Control buttons (14) are set on the main PCB board (8). Operation buttons (13) are set on the front shell (1). The front shell (1) and the bottom shell (5) are sealed and connected by connecting bolts (26) and connecting seats (27).
10. The application of the coating thickness gauge sensor according to claim 7, characterized in that: In step three, check whether the probe (20) is clean and undamaged, and ensure that it can make close contact with the surface to be measured. Place the probe (20) stably on the surface of the coating to be measured, ensuring that it is in close contact with the coating and perpendicular. At this time, the probe (20) and the sub-PCB board (17) move under the action of the sliding spring (16) and the limit of the sliding cover (18), driving the trigger switch (21) to move and be pressed in response. The measurement signal is collected and processed through the sub-PCB board (17) and transmitted to the main PCB board (8) through the flexible flat cable (22). The main PCB board (8) further processes the data and displays it through the top display screen (3) and the front display screen (11). After the measurement is completed, move the probe (20) away from the coating to be measured. Under the action of the sliding spring (16), the trigger switch (21), the sub-PCB board (17) and the probe (20) return to the initial position.