Waterproof high-precision digital caliper

Abstract

The utility model relates to digital caliper technical field, concretely relates to a waterproof high accuracy digital caliper, including the body, sensing board group, frame and cover, the frame includes frame body and fastening screw, sensing board group includes sensing board and adapter fixed plate, and the adapter fixed plate has the hollow hole, the digital caliper will sensing board and adapter fixed plate press together and weld, and drop UV glue in the hollow hole, through the welding and the way of sticking, the gap of two board fixed will not change, can effectively control the interval between two boards, and sensing board whole use nanometer waterproof paint dip -coating waterproof treatment, make material surface keep waterproof, guarantee use oil dirt, water stain cannot adhere to the sensor board surface, and the frame body and cover will cover the assembled sensing board group, and the sensing board group is sealed protection.

Description

Technical Field

[0001] This utility model relates to the field of digital caliper technology, and in particular to a waterproof high-precision digital caliper. Background Technology

[0002] Digital vernier calipers are length measuring tools that display measurement values ​​digitally. They offer advantages such as high measurement efficiency, clear and intuitive readings, ease of use, and simple operation, making them widely used in design and measurement fields. However, traditional digital calipers have certain limitations.

[0003] Due to its circuit structure, the solder joints on the PCB cannot be evenly distributed, resulting in large spacing between them. Considering the impact of soldering on the stress and deformation of the sensor board, an excessive number of solder joints cannot be used. Using only solder joints to fix the two boards creates an uncertain gap between the sensor board and the adapter board. When subjected to external forces or stress, this gap will change, affecting accuracy. Furthermore, in humid environments or when exposed to water, oil, cutting fluid, or other media, water vapor can easily condense and form a water film, causing leakage or short circuits, rendering the digital caliper malfunction or even causing it to fail. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof, high-precision digital caliper, which aims to solve the problem that the sensor plate and adapter plate of existing digital vernier calipers have uncertain gaps, which can easily cause leakage or short circuits due to water vapor penetration.

[0005] To achieve the above objectives, this utility model provides a waterproof, high-precision digital caliper, comprising a caliper body, a sensor plate assembly, a caliper frame, and a cover. The caliper body is mounted on one side of the caliper frame, the sensor plate assembly is mounted on one side of the caliper frame, and the cover is mounted on the outer side of the caliper frame. The caliper frame includes a caliper frame body and fastening screws. The sensor plate assembly includes a sensor plate and an adapter fixing plate. The caliper frame body is mounted on one side of the caliper body, and the adapter fixing plate is disposed on the top of the caliper frame body. The fastening screws are threadedly connected to the caliper frame body and pass through the adapter fixing plate. The sensor plate is fixedly connected to the adapter fixing plate and is located on the side of the adapter fixing plate closer to the caliper frame body. The adapter fixing plate has a perforated hole located on one side of the adapter fixing plate.

[0006] The spacing between the perforated holes is less than 15mm.

[0007] The cover includes a housing, a transparent window, and a PCB board. The housing is disposed outside the ruler frame. The transparent window is fixedly connected to the housing and located on the top of the housing. The PCB board is fixedly connected to the housing and connected to the sensing plate, and is located inside the housing.

[0008] The cover also includes a silicone sealing strip, which is disposed on the top of the PCB board.

[0009] The housing has a glue groove located on the side of the housing near the transparent window.

[0010] This utility model discloses a waterproof, high-precision digital caliper. The caliper comprises a sensor plate and a connecting fixing plate, which are press-welded together. UV adhesive is then applied into the hollowed-out holes. Through welding and gluing, the gap between the sensor plate and the connecting fixing plate remains unchanged, effectively controlling the distance between the two plates. Furthermore, the entire sensor plate is treated with a nano-waterproof coating, maintaining its surface waterproofness and preventing oil and water stains from adhering to the sensor plate surface. The caliper frame and the housing further seal the assembled sensor plate assembly. Furthermore, the assembled sensor plate assembly is independently positioned outside the housing and directly fixed to the ruler frame body by the fastening screws. This effectively prevents the housing from deforming during use, such as when subjected to excessive external force or impact, from being transmitted to the sensor plate assembly, causing stress deformation or permanent deformation between the sensor plate assembly and the ruler frame body, thus affecting measurement accuracy. The fastening screws on the ruler frame body restrict the housing from moving vertically, and other degrees of freedom do not cause displacement of the sensor plate assembly. In use, this digital caliper senses the sliding distance of the ruler frame body on the caliper body through the sensor plate assembly, thereby obtaining the measured value. This solves the problem of uncertain gaps between the sensor plate and adapter plate in existing digital vernier calipers, which can easily lead to leakage or short circuits due to water vapor penetration. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a structural schematic diagram of a waterproof, high-precision digital caliper according to this utility model.

[0013] Figure 2 This is a schematic diagram showing the connection between the ruler body, sensor plate assembly, and ruler frame of a waterproof high-precision digital caliper according to this utility model.

[0014] Figure 3 This is a top view of the connection between the ruler body, sensor plate assembly, and ruler frame of a waterproof high-precision digital caliper according to this utility model.

[0015] Figure 4 This is a schematic diagram of the connection of the sensor board assembly of a waterproof high-precision digital caliper according to this utility model.

[0016] Figure 5 This is a top view of the housing of a waterproof high-precision digital caliper according to this utility model.

[0017] Figure 6 yes Figure 5 A cross-sectional view along plane AA.

[0018] Figure 7 yes Figure 6 A magnified view of detail B.

[0019] In the diagram: 1-Scale body, 2-Sensor board assembly, 3-Scale frame, 4-Cover, 31-Scale frame body, 32-Fasting screw, 21-Sensor board, 22-Adapter fixing plate, 23-Kuve hole, 41-Housing, 42-Transparent window, 43-PCB board, 44-Silicone sealing strip, 45-Glue groove. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] Please see Figures 1 to 7 This utility model provides a waterproof high-precision digital caliper, including a caliper body 1, a sensor plate assembly 2, a caliper frame 3, and a cover 4. The caliper body 1 is assembled on one side of the caliper frame 3, the sensor plate assembly 2 is assembled on one side of the caliper frame 3, and the cover 4 is assembled on the outside of the caliper frame 3. The caliper frame 3 includes a caliper frame body 31 and fastening screws 32. The sensor plate assembly 2 includes a sensor plate 21 and an adapter fixing plate 22. The caliper frame body 31 is assembled on one side of the caliper body 1, and the adapter fixing plate 22 is disposed on the top of the caliper frame body 31. The fastening screws 32 are threadedly connected to the caliper frame body 31 and pass through the adapter fixing plate 22. The sensor plate 21 is fixedly connected to the adapter fixing plate 22 and is located on the side of the adapter fixing plate 22 closer to the caliper frame body 31. The adapter fixing plate 22 has a hollow hole 23 located on one side of the adapter fixing plate 22.

[0022] In this embodiment, the digital caliper presses and welds the sensor plate 21 and the adapter fixing plate 22 together, and drips UV glue into the hollow hole 23. Through welding and gluing, the gap between the sensor plate 21 and the adapter fixing plate remains unchanged, effectively controlling the distance between the two plates. Furthermore, the sensor plate 21 is entirely coated with a nano-waterproof coating for waterproofing, ensuring the material surface remains waterproof and preventing oil and water stains from adhering to the sensor plate surface. The ruler frame body 31 and the cover 4 then cover the assembled sensor plate assembly 2, providing sealed protection. Simultaneously, the assembly... The assembled sensor plate assembly 2 is independently mounted outside the housing 4 and directly fixed to the ruler frame body 31 by the fastening screws 32. This effectively prevents the housing 4 from deforming under excessive external force or impact during use, thus avoiding stress deformation or permanent deformation between the sensor plate assembly 2 and the ruler frame body 31, which would affect measurement accuracy. The fastening screws 32 on the ruler frame body 31 restrict the housing 4 from moving vertically, and prevent displacement of the sensor plate assembly 2 in other directions. When in use, the sensor plate assembly 2 senses the sliding distance of the ruler frame body 31 on the ruler body 1 to obtain the measured value. This solves the problem of uncertain gaps between the sensor plate and adapter plate in existing digital vernier calipers, which can easily cause leakage or short circuits due to water vapor penetration.

[0023] Furthermore, the cover 4 includes a housing 41, a transparent window 42, and a PCB board 43. The housing 41 is disposed outside the ruler frame 3. The transparent window 42 is fixedly connected to the housing 41 and located on the top of the housing 41. The PCB board 43 is fixedly connected to the housing 41 and connected to the sensing plate 21, and located inside the housing 41.

[0024] In this embodiment, the housing 41 covers the ruler frame body 31 to protect the ruler frame body 31. The PCB board 43 is electrically connected to the sensing board 21 and is used to control the movement of the sensing board 21 to realize measurement. The transparent window 42 is used to display the reading obtained by the sensing board 21.

[0025] Furthermore, the cover 4 also includes a silicone sealing strip 44, which is disposed on the top of the PCB board 43.

[0026] In this embodiment, the silicone sealing strip 44 is provided for waterproof protection of the housing 41 and the PCB board 43. The silicone sealing strip 44 adopts a full-enclosed structure, and the moving parts (buttons) are wrapped inside the silicone sealing strip 44. Due to airtightness, the button sealing affects the button rebound. An independent gap is left between the button and the overall sealing cavity, so that the button space is connected to the overall cavity, and the button is not affected.

[0027] Furthermore, the housing 41 has a glue groove 45, which is located on the side of the housing 41 near the transparent window 42.

[0028] In this embodiment, since the transparent window 42 is currently fixed by ultrasonic welding, considering the injection molding process, ultrasonic welding may not be completely airtight. Therefore, glue is injected into the space between the housing 41 and the transparent window 42 through the glue groove 45 to enhance the airtightness of the housing 41 and further improve the waterproofness of the digital caliper.

[0029] The above-disclosed embodiments are merely preferred embodiments of a waterproof high-precision digital caliper of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments, and equivalent variations made in accordance with the claims of this application, still fall within the scope of this application.

Claims

1. A waterproof, high-precision digital caliper. Its characteristics are: It includes a ruler body, a sensor plate assembly, a ruler frame, and a cover. The ruler body is assembled on one side of the ruler frame, the sensor plate assembly is assembled on one side of the ruler frame, and the cover is assembled on the outside of the ruler frame. The ruler frame includes a ruler frame body and fastening screws, and the sensor plate assembly includes a sensor plate and an adapter fixing plate. The ruler frame body is assembled on one side of the ruler body, the adapter fixing plate is disposed on the top of the ruler frame body, the fastening screw is threadedly connected to the ruler frame body and passes through the adapter fixing plate, the sensing plate is fixedly connected to the adapter fixing plate and is located on the side of the adapter fixing plate close to the ruler frame body, the adapter fixing plate has a hollow hole, and the hollow hole is located on one side of the adapter fixing plate.

2. The waterproof high-precision digital caliper as described in claim 1, characterized in that... ； The spacing between the perforated holes is less than 15mm.

3. The waterproof high-precision digital caliper as described in claim 1, characterized in that... ； The cover includes a housing, a transparent window, and a PCB board. The housing is disposed outside the ruler frame. The transparent window is fixedly connected to the housing and located on the top of the housing. The PCB board is fixedly connected to the housing and connected to the sensing plate, and is located inside the housing.

4. The waterproof high-precision digital caliper as described in claim 3, characterized in that... ； The cover also includes a silicone sealing strip, which is disposed on the top of the PCB board.

5. The waterproof high-precision digital caliper as described in claim 3, characterized in that... ； The housing has a glue groove located on the side of the housing near the transparent window.

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