Capacitive grating type caliper capable of resisting external influence

Abstract

The utility model relates to the technical field of precision measuring tools, in particular to a capacitive grating type caliper capable of resisting external influence. Comprising a caliper main body and a housing, the inner surface of a hollow area on the caliper main body is coated with an epoxy resin glue layer and is provided with a phosphor bronze spring strip with an inclined 45-degree concave-convex rib structure, a gap gasket is arranged between a movable gate and a fixed gate on the caliper main body, and the epoxy resin glue layer structure can ensure that a sensor plate and a caliper frame are better attached. The parallelism and distance parallelism of the two sensors can be guaranteed, the non-hollow area can also guarantee reliable connection of the ruler frame and the sensor plate and reduce external signal interference, the gap gasket is used for gap adjustment of the two corresponding sensors on the sensor plate, and after the gap of the ruler body is adjusted, the ruler body can be adjusted by arranging the phosphor bronze spring strip of an inclined 45-degree concave-convex rib structure. Under the condition that the product precision is guaranteed, the sliding resistance of the caliper body during use can be reduced, the sliding hand feeling during use is improved, the overall precision and stability of the caliper body during use can be improved, and use is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of precision measuring tools, and in particular to a capacitive caliper that is resistant to external influences. Background Technology

[0002] Capacitive calipers are precision measuring tools, and a core issue in their use is the decrease in measurement accuracy due to long-term use or environmental changes (such as temperature and vibration). Furthermore, in existing technologies, the moving caliper is often fixed to the frame using a single method (such as glue or screws). Due to the compact size of the product, the design often involves fixing the sensor to the housing first, and then fixing the entire assembly to the frame. This presents risks of displacement due to external forces, loosening, and differences in thermal expansion, thus affecting overall accuracy and stability and causing inconvenience in use. Utility Model Content

[0003] The purpose of this invention is to provide a capacitive caliper that is resistant to external influences, which aims to improve the overall accuracy and stability of the caliper body during use and facilitate its use.

[0004] To achieve the above objectives, this utility model provides a capacitive caliper resistant to external influences, comprising a caliper body and a cover, wherein the cover is detachably mounted on the caliper body, and an epoxy resin adhesive layer is scraped onto the surface of the hollow area on the caliper body, wherein the epoxy resin adhesive layer is located between the sensor plate and the frame of the caliper body.

[0005] A gap shim is provided between the moving grid and the fixed grid on the caliper body. A scale film is provided on the side of the fixed grid near the moving grid. The moving grid is fixed by a screw.

[0006] The caliper body is also equipped with a phosphor bronze spring strip with a 45° concave-convex rib structure.

[0007] The working gap between the two sensors on the sensor board is adjusted to a range of 0.05mm-0.12mm using the gap shim.

[0008] The sensor board can be fixed with screws or rivets.

[0009] The caliper body is equipped with a rivet nut structure.

[0010] The cover and the ruler frame are connected by cover locking screws.

[0011] This utility model discloses a capacitive caliper resistant to external influences. An epoxy resin layer is applied to the surface of the hollow area between the sensor plate and the caliper frame. This structure ensures better fit between the sensor plate and the frame, facilitating parallelism and distance between the two sensors. The non-hollow area also ensures reliable connection between the frame and the sensor plate, reducing external signal interference. A gap shim is used to adjust the gap between the two corresponding sensors on the sensor plate. Furthermore, a phosphor bronze spring strip with a 45° concave-convex rib structure reduces the sliding resistance of the caliper body during use, improving the sliding feel while maintaining product accuracy, thus enhancing the overall accuracy and stability of the caliper body and facilitating its use. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of the caliper with a grating that resists external influences, which is a utility model.

[0014] Figure 2 This is a schematic diagram of the sensor board of this utility model installed with screws.

[0015] Figure 3 This is a schematic diagram of the installation position of the phosphor bronze spring strip with a 45° concave-convex rib structure according to this utility model.

[0016] Figure 4 This is the utility model Figure 3 Enlarged view of point B in the middle.

[0017] Figure 5 This is a schematic diagram showing the placement of the gap gasket of this utility model.

[0018] Figure 6 This is a schematic diagram of the installation of the cover of this utility model.

[0019] Figure 7 This is a schematic diagram showing the installation position of the rivet nut structure of this utility model.

[0020] Figure 8 This is the utility model Figure 7 Enlarged view of point A in the middle.

[0021] Figure 9 This is a cross-sectional view of the riveting nut structure of this utility model.

[0022] In the diagram: 101-Caliper body, 102-Cover, 103-Epoxy resin layer, 104-Sensor plate, 105-Scale frame, 106-Moving grid, 107-Fixed grid, 108-Gap shim, 109-Scale film, 110-Matching screw, 111-45° angled concave-convex rib structure phosphor bronze spring strip, 112-Rivet nut structure, 113-Cover locking screw. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] like Figures 1 to 9 As shown, where Figure 1 This is a schematic diagram of the overall structure of a caliper with a grating mechanism that resists external influences. Figure 2 This is a schematic diagram of the sensor board 104 being mounted with screws. Figure 3 This is a schematic diagram showing the installation position of the phosphor bronze spring strip 111 with a 45° concave-convex rib structure. Figure 4 yes Figure 3 Enlarged view at point B in the middle. Figure 5 This is a schematic diagram showing the installation position of the gap shim 108. Figure 6 This is an installation diagram of cover 102. Figure 7 This is a schematic diagram showing the installation position of the rivet nut structure 112. Figure 8 yes Figure 7 Enlarged view of point A in the middle. Figure 9 This is a cross-sectional view of the riveting nut structure 112. This utility model provides a caliper with a pleated grid design resistant to external influences: it includes a caliper body 101 and a cover 102. The hollow area on the caliper body 101 is coated with an epoxy resin layer 103 and has a phosphor bronze spring strip 111 with a 45° concave-convex rib structure. A gap shim 108 is provided between the moving grid 106 and the fixed grid 107 on the caliper body 101. The aforementioned solution improves the overall accuracy and stability of the caliper body 101 during use, facilitating its operation. It is understood that the aforementioned solution can improve the overall accuracy and stability of the caliper body 101.

[0025] In this embodiment, the cover 102 is detachably mounted on the caliper body 101.

[0026] In this design, an epoxy resin layer 103 is applied to the surface of the hollowed-out area on the caliper body 101. This epoxy resin layer 103 is located between the sensor plate 104 and the frame 105 of the caliper body 101. The epoxy resin layer 103 is made of epoxy resin adhesive, which has a temperature resistance of -40℃ to 120℃, exhibiting excellent temperature resistance and facilitating stable use in various environments. Furthermore, by applying the epoxy resin layer 103 to the surface of the hollowed-out area between the sensor plate 104 and the frame 105 of the caliper body 101, this structure not only ensures better fit between the sensor plate 104 and the frame 105, facilitating parallelism and distance between the two sensors, but also ensures reliable connection (grounding) between the frame 105 and the sensor plate 104 in the non-hollowed-out areas, reducing external signal interference. The gap shims 108, using different thicknesses and stacking methods, adjust the gap between the two sensors on the sensor plate 104, thereby optimizing the sensing signal.

[0027] A gap shim 108 is provided between the movable grid 106 and the fixed grid 107 on the caliper body 101. A scale film 109 is provided on the side of the fixed grid 107 near the movable grid 106. The movable grid 106 is fixed by a mating screw 110.

[0028] The caliper body 101 is also equipped with a phosphor bronze spring strip 111 with a 45° concave-convex rib structure. By using the phosphor bronze spring strip 111 with a 45° concave-convex rib structure, after adjusting the caliper body gap and ensuring product accuracy, the sliding resistance of the caliper body 101 during use can be reduced, improving the sliding feel. Simultaneously, the uniform concave-convex grooves on the phosphor bronze spring strip 111 reduce the sliding contact area during measurement, thereby reducing sliding resistance. The recessed positions can trap oil stains and small impurities, providing better lubrication. Finally, the 45° concave-convex rib structure of the phosphor bronze spring strip 111 also ensures good operation during forward and backward movement.

[0029] Secondly, the working gap between the two sensors of the sensor plate 104 is adjusted to a range of 0.05mm-0.12mm using the gap shim 108. The working gap between the two sensors of the sensor plate 104 is adjusted by using the gap shim 108 with different thicknesses and stacking methods, thereby optimizing the sensing signal.

[0030] The sensor plate 104 can then be fixed with screws or rivets.

[0031] Furthermore, the caliper body 101 is provided with a riveting nut structure 112. Because the caliper body 101 is small and compact, the screws used for fixing the corresponding components can only be M2 or smaller. In addition, the frame material and the hardness after heat treatment exceed HRC50, making the machining of very small threads extremely difficult. Therefore, by providing the riveting nut structure 112 on the caliper body 101, machining becomes much easier.

[0032] Finally, the cover 102 and the ruler frame 105 are connected by cover locking screws 113. The connection between the cover 102 and the ruler frame 105 via cover locking screws 113 minimizes the impact on the sensor on the sensor plate 104 during use, thus ensuring the performance of the caliper body 101.

[0033] When using this utility model, the overall accuracy and stability of the caliper body 101 can be improved. Firstly, by applying an epoxy resin adhesive layer 103 to the surface of the hollow area between the sensor plate 104 and the frame 105 of the caliper body 101, the epoxy resin adhesive layer 103 is applied. In practice, the epoxy resin adhesive layer 103 uses epoxy resin glue with a temperature resistance of -40℃ to 120℃, thus possessing good temperature resistance performance, which facilitates stable use in different environments and improves the practicality of the caliper body 101. Simultaneously, this structure not only ensures better fit between the sensor plate 104 and the frame 105, facilitating the parallelism and distance between the two sensors, but also ensures reliable connection (grounding) between the frame 105 and the sensor plate 104 in the non-hollowed-out area, reducing external signal interference. The working gap between the two sensors on the sensor plate 104 is addressed by using gap shims 108 with different thicknesses and overlapping. The method achieves the adjustment of the gap between the two sensors on the sensor plate 104, thereby optimizing the sensing signal. Finally, through the phosphor bronze spring strip 111 with a 45° concave-convex rib structure, after the gap of the scale body is adjusted, and under the condition of ensuring product accuracy, this structure can reduce the sliding resistance of the caliper body 101 during use, and improve the sliding feel. At the same time, the evenly arranged concave and convex grooves on the phosphor bronze spring strip 111 with a 45° concave-convex rib structure can reduce the sliding contact area during measurement sliding, thereby reducing the sliding resistance. Moreover, the concave position can hide oil stains and small impurities, playing a certain role in oil storage and obtaining better lubrication. The 45° concave-convex rib structure of the phosphor bronze spring strip 111 with a 45° concave-convex rib structure can also be used well during forward and backward movement, thereby improving the overall accuracy and stability of the caliper body 101 during use, which is beneficial to use.

[0034] The above-disclosed embodiments are merely one or more preferred embodiments 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 changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A caliper resistant to external influences, comprising a caliper body and a cover, wherein the cover is detachably mounted on the caliper body, characterized in that: An epoxy resin layer is applied to the surface of the hollow area on the caliper body, and the epoxy resin layer is located between the sensor plate and the frame of the caliper body. A gap shim is provided between the moving grid and the fixed grid on the caliper body. A scale film is provided on the side of the fixed grid near the moving grid. The moving grid is fixed by a screw. The caliper body is also equipped with a phosphor bronze spring strip with a 45° concave-convex rib structure.

2. The caliper with a grating that resists external influences as described in claim 1, characterized in that: The working gap between the two sensors on the sensor board is adjusted to a range of 0.05mm-0.12mm using the gap shims.

3. The caliper with a grating that resists external influences as described in claim 1, characterized in that: The sensor board can be fixed with screws or rivets.

4. The caliper with a grating that resists external influences as described in claim 1, characterized in that: The caliper body is equipped with a rivet nut structure.

5. The caliper with a grating that resists external influences as described in claim 1, characterized in that... : The cover and the frame are connected by cover locking screws.

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