A digital caliper for quickly measuring capacitors of various sizes

Abstract

A digital caliper for quickly measuring various sizes of capacitors, relates to the technical field of measuring tools, solves the technical deficiency that the existing digital caliper is not suitable for batch detection of capacitor sizes, and the technical solution includes: a main scale, a scale frame, a circular support mechanism, a first distance sensor assembly, a secondary scale, a longitudinal measuring rod, a waist measuring anvil assembly, a second distance sensor assembly, a capacitance grid sensor assembly, a processor and a display. The beneficial effects of the present invention are: the capacitor to be measured is clamped by the circular support mechanism and the main scale measuring claws, the height and waist height of the capacitor are measured by the main scale and the secondary scale, the diameter of the capacitor is measured by the first distance sensor assembly located at the periphery of the capacitor, the waist of the capacitor is clamped by the waist measuring anvil assembly correspondingly slidably connected to the two ends of the longitudinal measuring rod, the diameter of the waist of the capacitor is measured by the second distance sensor assembly, the values ​​of various sizes of the capacitor to be measured are obtained by the processor and displayed on the display, so as to achieve the purpose of measuring various sizes of the capacitor at one time, and the detection efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitor quality inspection measuring tools, and more specifically to a digital caliper for quickly measuring various sizes of capacitors. Background Art

[0002] Capacitor manufacturers need to conduct strict quality inspections on the capacitors they produce. Among them, the more important quality inspection item is the inspection of the capacitor's appearance and size, which mainly uses digital calipers to measure the capacitor's diameter, height, waist diameter and depth, etc. In order to ensure the accuracy of the inspection, in actual inspection operations, it is often necessary to randomly inspect at least 50 samples from a batch of capacitor products.

[0003] The existing common digital calipers can only measure one size of the capacitor at a time, such as clamping the capacitor axially between the main scale jaws and the scale frame jaws of the digital caliper to detect its axial height. After measuring the axial height of the capacitor, the capacitor needs to be removed, and its side wall is clamped between the main scale jaws and the scale frame jaws to measure its diameter. Then the capacitor is removed again, and its waist is clamped between the main scale jaws and the scale frame jaws to measure its waist diameter. Then, the depth of the waist is calculated by subtracting the waist diameter from the capacitor diameter. Often, the measurement of various sizes of a capacitor requires repeated clamping, adjustment, measurement, degree, calculation and other operation steps. Completing the sampling inspection of a batch of products will consume a lot of time and energy of the inspectors, and the workload is extremely large, and the efficiency is low.

[0004] Therefore, it is necessary to provide a measuring tool specifically for capacitor size detection so that it can simultaneously measure multiple dimensions of the capacitor in one operation, thereby reducing the complicated detection operation steps of the detection personnel, reducing the detection workload, and improving the efficiency of capacitor size detection. Summary of the invention

[0005] In summary, the purpose of the present invention is to solve the technical deficiencies that the structural design of the existing digital caliper is not suitable for simultaneously measuring multiple sizes of capacitors, resulting in complicated measurement operation steps, large workload and low measurement efficiency, and to provide a digital caliper with a more reasonable structural design that can quickly detect multiple sizes of capacitors in one operation.

[0006] In order to solve the technical deficiencies proposed by the present invention, the technical solution adopted is:

[0007] A digital caliper for quickly measuring various sizes of capacitors, including:

[0008] The main ruler has a main ruler measuring claw disposed horizontally on its upper end and perpendicular to the ruler body;

[0009] A ruler frame is slidably connected to the main ruler and is provided with a ruler frame measuring claw assembly that cooperates with the main ruler measuring claw to clamp the capacitor to be measured;

[0010] It is characterized in that the ruler frame measuring claw assembly includes:

[0011] The circular support mechanism is horizontally fixedly connected to one side of the upper end of the ruler frame, and its transverse diameter corresponds to the extension direction of the main ruler claws, and is used to support the end face of the capacitor facing away from the waist part and limit and fix the capacitor in the middle position;

[0012] A first distance measuring sensor assembly is arranged on the circular support mechanism and evenly distributed around the periphery of the capacitor to be measured, and is used to measure the distance between the first distance measuring sensor assembly and the outer wall of the capacitor to be measured and convert it into a measuring electrical signal;

[0013] The digital caliper also includes:

[0014] The auxiliary ruler is slidably connected to the ruler frame and is located on the side of the main ruler opposite to the main ruler claw. A longitudinal measuring rod is arranged horizontally and longitudinally on the upper end of the auxiliary ruler corresponding to the main ruler claw, and the main ruler claw is located on the mid-vertical line of the longitudinal measuring rod.

[0015] Two waist measuring anvil assemblies are correspondingly connected to the two ends of the longitudinal measuring rod in a horizontal and transverse sliding manner and extend to one side of the main ruler measuring claw, and are used to move toward each other along the longitudinal measuring rod to clamp the waist of the capacitor when the upper end of the secondary ruler moves to one side of the waist of the capacitor to be measured;

[0016] A second distance measuring sensor assembly is provided on the waist measuring anvil assembly, and is used to measure the distance between the waist measuring anvil assemblies clamped on both sides of the waist of the capacitor to be measured and convert it into a measuring electrical signal;

[0017] The capacitive grid sensor assembly is arranged between the main scale, the auxiliary scale and the scale frame, and is used to measure the displacement of the main scale and the auxiliary scale relative to the scale frame and convert it into a measurement electrical signal;

[0018] A processor is disposed in the ruler frame and is electrically connected to the first distance measuring sensor assembly, the second distance measuring sensor assembly and the capacitance grid sensor assembly, and is used to receive and process the measurement electrical signals sent by each sensor assembly to calculate the diameter of the measured capacitor, the diameter of the capacitor waist, the height of the capacitor, the height of the capacitor waist, and calculate the depth of the capacitor waist;

[0019] The display is arranged on the ruler frame and is electrically connected to the processor through a display circuit to display the measurement result.

[0020] Furthermore, the circular support mechanism includes:

[0021] A circular pedestal, horizontally fixedly connected to one side of the upper end of the ruler frame, with its upper end surface flush with the upper end surface of the ruler frame, its diameter is larger than the diameter of the largest capacitor to be measured, and at least three limiting guide grooves are evenly distributed in the radial direction;

[0022] The limit clamping rods are movably inserted into the limit guide grooves one by one, and the upper ends thereof extend vertically out of the upper end surface of the circular pedestal to clamp and fix the capacitor to be tested on the circular pedestal under the guidance of the limit guide grooves so that the two are on the same axis;

[0023] The circular driving seat is coaxially rotatably connected under the circular pedestal, and is evenly distributed with arc driving grooves having the same number as the limit guide grooves. The lower ends of the limit clamping rods are movably connected in the arc driving grooves one by one, so that when the circular driving seat is screwed by external force, the limit clamping rods are driven by the arc driving grooves to move synchronously toward or away from the limit guide grooves to clamp or release the capacitor under test.

[0024] Furthermore, the circular drive seat has an annular outer wall uniformly distributed with anti-slip grooves that facilitate user's twisting.

[0025] Furthermore, a self-clamping tension spring for driving the limit clamping rod to automatically clamp the capacitor under test is provided between the circular pedestal and the circular driving seat.

[0026] Furthermore, the first distance measuring sensor assembly includes:

[0027] A plurality of measuring columns are evenly distributed vertically at the edge of the upper end surface of the circular support mechanism, and the height of the measuring columns is not greater than the height of the waist of the smallest capacitor to be measured;

[0028] The first distance measuring sensor is respectively fixed on the upper part of the measuring column on the side facing the axis of the circular support platform mechanism, and is used to transmit detection signals to the side wall of the capacitor to be measured and receive reflection signals. It is one of a laser distance measuring sensor, an infrared distance measuring sensor, an ultrasonic distance measuring sensor, or a radar distance measuring sensor.

[0029] Furthermore, the second distance measuring sensor assembly includes:

[0030] The second ranging sensor is arranged on the side of one of the waisted anvil assemblies facing the main scale measuring claw, and is correspondingly located outside the gap between the main scale and the secondary scale to transmit a detection signal to the other waisted anvil assembly through the gap and receive a reflected signal. The second ranging sensor is one of a laser ranging sensor, an infrared ranging sensor, an ultrasonic ranging sensor, or a radar ranging sensor.

[0031] Furthermore, the capacitive sensor assembly includes:

[0032] A first fixed grid is arranged vertically on a side wall of the main ruler body facing the main ruler measuring claw;

[0033] A first moving grid is vertically arranged on a side wall of the ruler frame corresponding to a first slot for plugging into the main ruler body and corresponding to a side of the first fixed grid, and the first moving grid is not in direct contact with the first fixed grid;

[0034] A second fixed grid is arranged vertically on a side wall of the ruler frame and is used to match and insert the second slot of the secondary ruler body;

[0035] The second moving grid is vertically arranged on the side wall of the secondary ruler body corresponding to the second fixed grid, and the second moving grid is not in direct contact with the second fixed grid.

[0036] Furthermore, the digital caliper also includes:

[0037] The wireless communication module is arranged in the ruler frame and electrically connected to the processor, and is used to wirelessly connect the digital caliper to the user's terminal device to send measurement data thereto, and is one of a Bluetooth module, a ZigBee module, or a WiFi module.

[0038] Furthermore, the ruler frame is provided with a power switch, a reset key, a unit conversion key and a wireless communication switch.

[0039] Furthermore, the ruler frame is provided with a first locking member and a second locking member for respectively locking and fixing the main ruler and the auxiliary ruler.

[0040] The beneficial effects of the present invention are:

[0041] 1. The present invention only needs to clamp the capacitor to be measured between the main ruler measuring claw and the ruler frame measuring claw assembly once, so as to simultaneously measure the height, diameter, height and diameter of the capacitor waist and the concave depth of the waist relative to the outer wall of the capacitor to be measured, thereby achieving the purpose of clamping the capacitor once and measuring its various dimensional data at the same time, greatly reducing the workload of capacitor size detection, reducing the complicated steps in the capacitor size detection process, improving the detection efficiency and saving the detection time.

[0042] 2. The present invention can accurately measure the displacement between the main scale and the auxiliary scale relative to the upper end surface of the circular support platform mechanism through the capacitance grid sensor assembly and send the measurement electrical signal to the processor for processing, so that the processor can accurately calculate the axial height of the capacitor under test and the height of its waist. The first distance measuring sensor assembly surrounding the periphery of the capacitor under test accurately measures the distance between it and the outer wall of the capacitor under test and sends the measurement electrical signal to the processor for processing, so that the processor can accurately calculate the diameter of the capacitor under test according to the fixed distance between the first distance measuring sensor assembly and the center position of the upper end surface of the circular support platform mechanism. The waist of the capacitor under test is clamped by two waist measuring anvil assemblies and the distance between the two waist measuring anvil assemblies is accurately measured by the second distance measuring sensor assembly and the measurement electrical signal is sent to the processor, so that the processor can accurately calculate the waist diameter of the capacitor under test, and then the processor uses the obtained capacitor diameter minus the waist diameter to calculate the depth of the waist of the capacitor under test. Through the above-mentioned measurement method, multiple size data of the capacitor under test can be measured simultaneously in one operation, with high measurement accuracy, and no manual reading and calculation by the detection personnel is required, and the detection efficiency is high.

[0043] 3. The circular support platform mechanism of the present invention can limit and fix the capacitor to be measured, so that the capacitor to be measured is always coaxial with the upper end surface of the circular support platform mechanism, ensuring that the main ruler claw can be clamped in the transverse diameter direction of the cross section of the capacitor to be measured, and at the same time ensuring that the first distance measuring sensor assembly can be evenly distributed on the periphery of the outer wall of the capacitor to be measured, so that the two waist measuring anvil assemblies at both ends of the longitudinal measuring rod can clamp the waist of the capacitor to be measured synchronously and at the same interval, and ensure that the spacing between the first distance measuring sensor assembly and the outer wall of the capacitor to be measured is equal, thereby ensuring the accuracy and reliability of the size measurement of the capacitor to be measured of the present invention.

[0044] 4. The ruler frame of the present invention is slidably connected to the main ruler, and the auxiliary ruler is slidably connected to the ruler frame, and the auxiliary ruler is correspondingly located on the side of the main ruler facing away from the main ruler measuring claw, and is used to measure the height of the measured capacitor and the height of its waist, respectively. The structure is simple, the design is ingenious, and the ruler frame space is fully utilized. The main ruler and the auxiliary ruler work independently and do not affect each other, and can measure the height of the measured capacitor and the height of the waist at the same time. Moreover, the longitudinal measuring rod and the main ruler measuring claw are on the same horizontal plane, which ensures that the main ruler and the auxiliary ruler can be reset and zeroed on the upper end surface of the ruler frame, and the measurement accuracy is high.

[0045] 5. The present invention adds a first distance measuring sensor component and a second distance measuring sensor component to the capacitance grid sensor component in the existing digital caliper to perform precise measurement, enriching the measurement method of the digital caliper sensor of the present invention, making the measurement of the capacitor more accurate, simple, convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 It is a circuit principle block diagram of the present invention;

[0048] Figure 3 It is a schematic diagram of the structure of the circular support mechanism and the first distance measuring sensor assembly of the present invention;

[0049] Figure 4 It is a structural schematic diagram of the circular driving seat of the present invention driving the limit clamping rod to move along the limit guide groove;

[0050] Figure 5 It is a schematic cross-sectional structure diagram of the circular support mechanism of the present invention when it is cut vertically along the direction of one pair of limiting guide grooves in a normal state;

[0051] Figure 6 It is a schematic diagram of the structure of the waisted anvil assembly and the second distance measuring sensor assembly of the present invention;

[0052] Figure 7 It is an enlarged schematic diagram of the local structure of the present invention;

[0053] Figure 8 It is an enlarged schematic diagram of the local structure on the right side of the secondary ruler, longitudinal measuring rod and waisted measuring anvil assembly of the present invention;

[0054] Fig. 9 It is a schematic diagram of the horizontal cross-section structure of the main ruler, auxiliary ruler and ruler frame of the present invention.

[0055] In the figure: 100. Main board, 101. Processor, 102. Wireless communication module, 1. Main ruler, 11. Main ruler scale, 12. Main ruler claw, 2. Ruler frame, 21. Circular support mechanism, 211. Circular pedestal, 212. Limit guide groove, 213. Limit clamping rod, 214. Circular drive seat, 215. Arc drive groove, 216. Bushing, 217. Hanging part, 218. Hanging groove, 219. Anti-skid pattern, 220. Self-clamping tension spring, 22. First distance sensor assembly, 221. Measuring column, 222. First distance sensor, 223. First reflector, 23. The first slot, 24. The second slot, 25. The thumb support, 26. The power switch, 27. The reset key, 28. The unit conversion key, 29. The wireless communication switch, 30. The first locking piece, 301. The second locking piece, 3. The secondary ruler, 31. The secondary ruler scale, 32. The extension part, 4. The longitudinal measuring rod, 41. The measuring rod scale, 5. The waisted anvil assembly, 51. The marking line, 6. The second distance measuring sensor assembly, 61. The second distance measuring sensor, 62. The second reflector, 7. The capacitive grid sensor assembly, 71. The first fixed grid, 72. The first moving grid, 73. The second fixed grid, 74. The second moving grid, 8. The display. DETAILED DESCRIPTION

[0056] The structure of the present invention is further described below in conjunction with the accompanying drawings and preferred specific embodiments of the present invention.

[0057] Reference Figure 1 and Figure 2 As shown, the present invention:

[0058] A digital caliper for quickly measuring various sizes of capacitors, including:

[0059] The main ruler 1 has main ruler scales 11 arranged vertically on the left side of its vertical ruler body, and main ruler measuring claws 12 perpendicular to the ruler body are horizontally arranged on the left side of its upper end.

[0060] The ruler frame 2 is a rectangular frame structure as a whole, and is vertically slidably connected to the ruler body of the main ruler 1. A ruler frame measuring claw assembly is horizontally disposed on the left side of the upper end thereof, which cooperates with the main ruler measuring claw 12 to clamp the capacitor to be measured.

[0061] The inventive point of the present invention is that the ruler frame measuring claw assembly comprises:

[0062] The circular support mechanism 21 is horizontally fixedly connected to the left side of the upper end of the ruler frame 2, and the lateral diameter of its upper end surface corresponds to the main ruler measuring claw 12. The circular support mechanism 21 is used to support the end surface of the capacitor to be measured that is away from its waist and limit and fix the capacitor in the middle position of its upper end surface.

[0063] The first distance measuring sensor assembly 22 is arranged on the upper end surface of the circular support mechanism 21 and is evenly distributed on the periphery of the outer wall of the capacitor to be measured, and is used to measure the distance between the first distance measuring sensor assembly 22 and the outer wall of the capacitor to be measured and convert it into a measurement electrical signal.

[0064] Furthermore, the digital caliper of the present invention also includes:

[0065] The auxiliary ruler 3 has auxiliary ruler scales 31 arranged vertically on the left side of its vertical ruler body. Its ruler body is slidably connected to the ruler frame 2 and is located on the side of the main ruler 1 facing away from its main ruler measuring claw 12. A longitudinal measuring rod 4 with a rectangular vertical cross-section is arranged horizontally and longitudinally on the upper end of the main ruler measuring claw 12. The main ruler measuring claw 12 is located on the mid-perpendicular line of the longitudinal measuring rod 4.

[0066] The two waist measuring anvil assemblies 5 are correspondingly connected to the two ends of the longitudinal measuring rod 4 in a horizontal and transverse sliding manner and extend to one side of the main scale measuring claw 12. They are used to move toward each other along the longitudinal measuring rod 4 to clamp the waist of the capacitor when the upper end of the secondary scale 3 moves to the right side of the waist of the capacitor being measured.

[0067] The second distance measuring sensor assembly 6 is correspondingly arranged on the two waist measuring anvil assemblies 5, and is used to measure the distance between the waist measuring anvil assemblies 5 clamped on both sides of the waist of the capacitor to be measured and convert it into a measuring electrical signal.

[0068] The capacitive grid sensor assembly 7 is arranged between the main scale 1, the auxiliary scale 3 and the scale frame 2, and is used to measure the displacement of the main scale 1 and the auxiliary scale 3 relative to the scale frame 2 and convert it into a measurement electrical signal.

[0069] The processor 101 is arranged on the main board 100 in the ruler frame 2, and is electrically connected to the first distance measuring sensor component 22, the second distance measuring sensor component 6 and the capacitor grid sensor component 7, and is used to receive and process the measurement electrical signals sent by each sensor component to calculate the diameter of the measured capacitor, the diameter of the capacitor waist, the height of the capacitor, the height of the capacitor waist, and calculate the depth of the capacitor waist.

[0070] The display 8 is disposed on the front surface of the ruler frame 2 and is electrically connected to the processor 101 via a display circuit to display various measurement results.

[0071] After adopting the above technical solution, the present invention can bring the following significant technical effects:

[0072] Firstly, the present invention only needs to clamp the capacitor to be measured between the main ruler measuring claw 12 and the ruler frame measuring claw assembly once, so as to simultaneously measure the height, diameter, height and diameter of the capacitor waist and the inner concave depth of the waist relative to the outer wall of the capacitor to be measured, thereby achieving the purpose of clamping the capacitor once and measuring its various dimensional data at the same time, greatly reducing the workload of capacitor size detection, reducing the complicated steps in the capacitor size detection process, improving the detection efficiency and saving the detection time.

[0073] Moreover, the present invention can accurately measure the displacement between the main scale 1 and the secondary scale 3 relative to the upper end surface of the circular support platform mechanism 21 through the capacitance grid sensor assembly 7 and send the measurement electrical signal to the processor 101 for processing, so that the processor 101 can accurately calculate the axial height of the capacitor under test and the height of its waist. The first distance measuring sensor assembly 22 surrounding the periphery of the capacitor under test accurately measures the distance between it and the outer wall of the capacitor under test and sends the measurement electrical signal to the processor 101 for processing, so that the processor 101 can accurately calculate the diameter of the capacitor under test according to the fixed distance between the first distance measuring sensor assembly 22 and the center position of the upper end surface of the circular support platform mechanism 21. The waist of the capacitor under test is clamped by two waist measuring anvil assemblies 5 and the distance between the two waist measuring anvil assemblies 5 is accurately measured by the second distance measuring sensor assembly 6 and the measurement electrical signal is sent to the processor 101, so that the processor 101 can accurately calculate the waist diameter of the capacitor under test, and then the processor 101 can obtain the depth of the waist of the capacitor under test by subtracting the diameter of the waist from the obtained capacitor diameter. It can measure various dimensions of the capacitor in one operation, with high measurement accuracy, no need for manual reading and calculation by the inspector, fast detection speed and high efficiency.

[0074] At the same time, the circular support platform mechanism 21 of the present invention can limit and fix the capacitor to be measured, so that the capacitor to be measured is always coaxial with the upper end surface of the circular support platform mechanism 21, so that the main ruler claw 12 can be clamped in the transverse diameter direction of the cross section of the capacitor to be measured, and at the same time, the first distance measuring sensor assembly 22 can be evenly distributed on the periphery of the outer wall of the capacitor to be measured, thereby ensuring that the two waist measuring anvil assemblies 5 at both ends of the longitudinal measuring rod 4 can clamp the waist of the capacitor to be measured synchronously and at the same interval, and ensuring that the spacing between the first distance measuring sensor assembly 22 and the outer wall of the capacitor to be measured is equal, thereby ensuring the accuracy and reliability of the size measurement of the capacitor to be measured of the present invention.

[0075] Moreover, the ruler frame 2 of the present invention is slidably connected to the main ruler 1, and the auxiliary ruler 3 is slidably connected to the ruler frame 2, and the auxiliary ruler 3 is correspondingly located on the side of the main ruler 1 facing away from the main ruler measuring claw 12, respectively measuring the height of the measured capacitor and the height of its waist, with a simple structure, ingenious layout, and reasonable design, making full use of the ruler frame 2 space, and the main ruler 1 and the auxiliary ruler 3 work independently and do not affect each other, and can simultaneously measure the height of the measured capacitor and the height of the waist. Moreover, the longitudinal measuring rod 4 and the lower end surface of the main ruler measuring claw 12 are on the same horizontal plane, ensuring that the main ruler 1 and the auxiliary ruler 3 can be reset and zeroed on the upper end surface of the ruler frame 2, and the measurement accuracy is high.

[0076] Moreover, the present invention adds a first distance measuring sensor component 22 and a second distance measuring sensor component 6 on the basis of the capacitor sensor component 7 in the existing digital caliper to perform precise measurement, enriching the measurement method of the digital caliper sensor of the present invention, making the measurement of the capacitor size more accurate, simple, reliable, convenient and fast.

[0077] In addition, the display 8 provided on the ruler frame 2 of the present invention can intuitively display the measured values ​​of various sizes of the capacitor under test, which is convenient for the measurement personnel to observe and record, eliminating the tediousness of manual reading and avoiding the errors caused by manual reading, and achieving higher accuracy.

[0078] Further, see Figures 3 to 5 As shown, the circular support mechanism 21 of the present invention includes:

[0079] The circular pedestal 211 is horizontally fixedly connected to the left side of the upper end of the ruler frame 2, and its upper end surface is flush with the upper end surface of the ruler frame 2. Its diameter is larger than the diameter of the largest capacitor to be measured, and there are four limiting guide grooves 212 extending from its edge to its center evenly distributed in the radial direction.

[0080] There are four limit clamping rods 213 in total and they are vertically movably inserted into the limit guide grooves 212 one by one. The upper end of each limit clamping rod 213 extends vertically out of the upper end surface of the circular pedestal 211 to clamp and fix the capacitor under test on the circular pedestal 211 under the guidance of the limit guide grooves 212 so that the capacitor under test and the circular pedestal 211 are on the same axis.

[0081] The circular drive seat 214 is coaxially connected to the lower part of the circular pedestal 211 and has four arc-shaped drive grooves 215 (such as Figure 4 As shown, the lower end of the limit clamping rod 213 passes through the shaft sleeve 216 (as shown Figure 5 During use, the testing personnel manually rotate the circular driving seat 214 to drive the limiting clamping rod 213 to move synchronously toward or away from the limiting guide groove 212 through the arc driving groove 215 to clamp or release the capacitor under test.

[0082] Specifically, refer to Figure 5As shown, a hanging portion 217 for hanging a circular driving seat 214 is provided on the edge of the lower surface of the circular pedestal 211 of the present invention, and a hanging groove 218 matching and embedded in the hanging portion 217 is provided on the inner surface of the side wall of the circular driving seat 214. The circular driving seat 214 is rotatably connected to the lower part of the circular pedestal 211 through the hanging groove 218 and the hanging portion 217 coaxially, and a certain space is left between the circular pedestal 211 and the circular driving seat 214 after the connection.

[0083] It should be noted that the connection structure design between the circular drive seat 214 and the circular pedestal 211 in the present embodiment is only a preferred implementation mode of the present invention and is not a limitation of the present invention. In some other embodiments, the circular pedestal 211 and the circular drive seat 214 can also be coaxially rotatably connected via a rotating shaft and a sleeve assembly, or connected by other coaxially rotatably connecting methods. It is only necessary to ensure that the limit clamping rod 213 is driven to clamp or release the capacitor under test during the rotation of the circular drive seat 214.

[0084] Further, see Figure 3 As shown, the annular outer wall of the circular drive seat 214 of the present invention is uniformly distributed with anti-skid patterns 219 that are convenient for users to twist. During use, the inspector can conveniently move the circular drive seat 214 with the thumb through the anti-skid patterns 219, so that the inspector can operate the circular support mechanism 21 with a single thumb to clamp or release the capacitor under test. The operation is simple and convenient, and does not occupy the inspector's hands. The other hand can be used to operate the secondary ruler 3 and the waisted anvil assembly 5 at the same time, which is conducive to quickly measuring the capacitor under test and improving the detection efficiency.

[0085] Further, see Figure 4 and Figure 5 As shown, a self-clamping tension spring 220 is provided in the space reserved between the circular pedestal 211 and the circular driving seat 214 of the present invention, which is used to automatically pull the circular driving seat 214 to rotate to the initial position so as to drive the limit clamping rod 213 to automatically clamp the capacitor under test at the center position of the circular pedestal 211.

[0086] Preferably, refer to Figure 4 As shown, there are four self-clamping tension springs 220, which are respectively arranged on one side of the limiting guide groove 212 in a one-to-one correspondence. One end of each self-clamping tension spring 220 is fixedly connected to the outer side of the limiting guide groove 212 near the center of the circle on the lower surface of the circular seat 211, and the other end is fixedly connected to the inner side of the edge of the upper surface of the circular driving seat 214. Under normal conditions, the circular driving seat 214 is reset under the elastic drive of the four self-clamping tension springs 220 to drive the four limiting clamping rods 213 to automatically clamp at the middle position of the circular seat 211 along the limiting guide groove 212 through the arc driving groove 215.

[0087] The self-clamping tension spring 220 provided in the present invention can drive the limit clamping rod 213 to automatically clamp and fix the capacitor under test under the action of elastic force, ensuring that after the capacitor under test is placed on the circular support platform mechanism 21 and fixed, there is no need for the inspector to manually screw the circular driving seat 214 to maintain the clamping state of the capacitor under test, thereby removing the restriction on the inspector's hands in order to maintain the clamping state of the capacitor under test during the measurement process, making it convenient for the inspector to perform other measurement operations with his hands, making the detection operation process more convenient and saving time and effort.

[0088] Of course, in some other embodiments, the number and installation position of the self-clamping tension spring 220 can be adjusted according to actual needs, as long as it can be ensured that the limit clamping rod 213 can be driven to automatically clamp the capacitor under test.

[0089] It should be noted that the number and position design of the position-limiting guide grooves 212 and the position-limiting clamping rods 213 in this embodiment are only a preferred embodiment of the present invention and are not intended to limit the present invention. This embodiment adopts such a structural design to facilitate the main scale 1 and the auxiliary scale 3 to maintain a closed zero state without being hindered by the position-limiting clamping rods 213 in the initial standby state. In the initial state, the four position-limiting clamping rods 213 can be automatically clamped on both sides of the main scale measuring claws 12 and the waist measuring anvil assembly 5 under the elastic force of the self-clamping tension spring 220.

[0090] In some other embodiments, the number of the limit clamping rods 213 can be designed to be three, so as to clamp and fix the capacitor under test at an angle of 120° between them, or the number of the limit clamping rods 213 can be designed to be five, so as to clamp and fix the capacitor under test at an angle of 72° between them, as long as the limit clamping rods 213 do not hinder the main scale 1 and the auxiliary scale 3 from closing and returning to zero in the initial standby state.

[0091] At the same time, it should be noted that since the specifications and sizes of the capacitor products produced by the enterprise are varied, with different sizes, heights, and fatness, in order to improve the applicability of the size detection of the present invention, the upper height of the limit clamping rod 213 exposed to the upper end surface of the circular pedestal 211 cannot exceed the minimum height of the waist of the capacitor to be measured, to ensure that when measuring the capacitor with the minimum specification size, the longitudinal measuring rod 4 at the upper end of the secondary ruler 3 can be adjusted to the right side of the waist of the capacitor, and the two waist measuring anvil assemblies 5 can be smoothly clamped horizontally on the waist of the capacitor from both sides without being hindered by the limit clamping rod 213.

[0092] Further, see Figure 3 and Figure 5 As shown, the first distance measuring sensor assembly 22 of the present invention preferably includes:

[0093] Four measuring posts 221 are respectively located outside the outer ends of the four limiting guide grooves 212, and the four measuring posts 221 are evenly distributed vertically at the edge of the upper end surface of the circular pedestal 211, and the height of the measuring posts 221 is not greater than the height of the waist of the smallest capacitor to be measured. Preferably, the height of the measuring posts 221 is not higher than the height of the corresponding limiting clamping rod 213, and the distances between the measuring posts 221 and the center of the upper end surface of the circular pedestal are equal.

[0094] The first distance measuring sensors 222 are respectively fixedly mounted on the upper part of the measuring column 221 on the side facing the axis of the circular support mechanism 21, and are preferably laser distance measuring sensors, for emitting laser detection signals to the side wall of the capacitor under test and receiving laser reflection signals.

[0095] It should be noted that in this embodiment, the measuring column 221 is correspondingly arranged on the outer side of the limit clamping rod 213. This design is only a preferred embodiment of the present invention and is not a limitation of the present invention. This structural design can avoid the layout of the measuring column 221 on the circular pedestal 211 from conflicting with the layout of the limit clamping rod 213, and is conducive to the first distance measuring sensor 222 emitting a laser detection signal to the axis of the circular pedestal 211. In some other embodiments, the position and number of the measuring column 221 can be adjusted according to actual needs. For example, three measuring columns 221 can be arranged at equal intervals at an angle of 120° to each other at the edge of the upper end surface of the circular pedestal 211 and avoid the position where the main ruler claw 12 is closed and reset to zero, as long as the distance between each measuring column 221 and the center of the upper end surface of the circular pedestal 211 is equal.

[0096] In this embodiment, the laser detection signal emitted by the first distance measuring sensor 222 is not directly irradiated onto the outer wall of the capacitor to be measured, but irradiated onto the corresponding limit clamping rod 213. In order to reduce the scattering of the laser detection signal emitted by the first distance measuring sensor 222 and improve the measurement accuracy and efficiency of the first distance measuring sensor 222, the present invention further provides a first reflector 223 for directly reflecting the laser detection signal back at the position of each limit clamping rod 213 corresponding to the first distance measuring sensor 222. During actual measurement, the laser detection signal emitted by the first distance measuring sensor 222 is irradiated onto the corresponding first reflector 223 and receives the laser reflection signal reflected back by the first reflector 223, and then converted into a measurement electrical signal and sent to the processor 101 for processing.

[0097] Since the distance between the two corresponding measuring columns 221 is fixed and known, and the cross-sectional diameter of the limit clamping rod 213 is also fixed and known, after receiving the measurement electrical signal sent by the first distance measuring sensor 222, the processor 101 will use the fixed distance between the measuring column 221 and the center of the circular pedestal 211 minus the measured value and then minus the diameter of the limit clamping rod 213 to obtain the radius of the measured capacitor according to the set operation rules, and then multiply the obtained radius value by 2 to obtain the diameter of the measured capacitor. In addition, in this embodiment, a total of four measuring columns 221 are provided, so the calculated diameter of the measured capacitor is the average value of the four sets of measurement data after calculation, and the result is more accurate and reliable.

[0098] Further, see Figure 6 As shown, the second distance measuring sensor assembly 6 of the present invention includes:

[0099] The second distance measuring sensor 61 is preferably a laser distance measuring sensor, which is arranged on the side of one of the waist measuring anvil assemblies 5 facing the main scale measuring claw 12, and is located correspondingly outside the gap between the main scale 1 and the secondary scale 3 to transmit a laser detection signal to the other waist measuring anvil assembly 5 through the gap and receive a laser reflection signal.

[0100] In order to reduce the scattering of the laser detection signal emitted by the second ranging sensor 61 and improve the measurement accuracy and efficiency of the second ranging sensor 61, the present invention further provides a second reflector 62 for directly reflecting the laser detection signal back at a position of another beam waist anvil assembly 5 corresponding to the second ranging sensor 61.

[0101] Reference Figure 7 As shown, the second distance measuring sensor 61 of the present invention can accurately detect the distance between the two beam waist anvil assemblies 5. During the detection, the laser detection signal emitted by the second distance measuring sensor 61 horizontally and vertically passes through the gap between the main scale 1 and the secondary scale 3 and irradiates the second reflector 62 of the other corresponding beam waist anvil assembly 5, thereby receiving the laser reflection signal reflected back and converting it into a measurement electrical signal, and then transmitting the measurement electrical signal to the processor 101 for processing and finally calculating the distance between the two beam waist anvil assemblies 5, thereby obtaining the diameter of the beam waist of the capacitor under test.

[0102] Since the first ranging sensor 222 has already measured the diameter of the capacitor under test, after the second ranging sensor 61 measures the diameter of the waist of the capacitor under test, the processor 101 can calculate the depth of the waist of the capacitor under test by subtracting the diameter of the waist of the capacitor under test from the obtained diameter of the capacitor under test and then dividing the result by 2 according to the calculation formula.

[0103] Further, see Figure 7 and Figure 8As shown, the two waist measuring anvil assemblies 5 are correspondingly connected to the two ends of the longitudinal measuring rod 4 by horizontal transverse sliding. During actual measurement, they can be adjusted by manual toggling so that the two waist measuring anvil assemblies 5 are correspondingly clamped on the waist of the capacitor to be measured.

[0104] In order to facilitate manual reading of measurement values, a measuring rod scale 41 is longitudinally arranged on the right end face of the longitudinal measuring rod 4 of the present invention, and a marking line 51 for indicating the measuring rod scale 41 is provided on the right end face of each waisted anvil assembly 5, and the measuring rod scale 41 is symmetrically designed to ensure that after the two waisted anvil assemblies 5 clamp the waist of the capacitor to be measured, the distance between the two waisted anvil assemblies 5 can be read through the measuring rod scale 41 at any end of the longitudinal measuring rod 4.

[0105] 1mm。 In the measuring rod scale 41 of the present embodiment, each minimum scale represents 0.5mm, plus the estimated value so that the accuracy of the manual reading when measuring the waist diameter of the capacitor of the present invention reaches 0. 1mm.

[0106] Furthermore, in order to facilitate manual adjustment of the position of the secondary ruler 3 during measurement, the present invention further provides an extension portion 32 (such as Figure 7 As shown in FIG. 1 ), the lower end surface of the extension portion 32 is flush with the lower end surface of the longitudinal measuring rod 4, which can ensure that the secondary ruler 3 is closed and zeroed. Moreover, in actual detection operations, the detection personnel can use the thumb to move the extension portion 32 to adjust the position of the secondary ruler 3, which is convenient for operation.

[0107] Further, see Fig. 9 As shown, the capacitive sensor assembly 7 of the present invention includes:

[0108] The first fixed grid 71 is vertically arranged on the left side wall of the main ruler 1 facing the main ruler measuring claw 12 .

[0109] The first moving fence 72 is vertically arranged on the left side wall of the ruler frame 2 corresponding to the first fixed fence 71 for matching the first slot 23 of the ruler body of the main ruler 1, and the first moving fence 72 is not in direct contact with the first fixed fence 71.

[0110] The second fixed grid 73 is arranged vertically on the left side wall of the ruler frame 2 for matching and inserting the second slot 24 of the ruler body of the secondary ruler 3 .

[0111] The second moving fence 74 is vertically arranged on the left side wall of the secondary ruler 3 corresponding to the second fixed fence 73 , and the second moving fence 74 is not in direct contact with the second fixed fence 73 .

[0112] The first fixed grid 71 and the second moving grid 74 are respectively arranged on the main scale 1 and the auxiliary scale 3. When actually measuring, the main scale 1 is adjusted first, and after the circular support mechanism 21 clamps and fixes the capacitor to be measured, the thumb support 25 at the lower end of the scale frame 2 is pushed (such as Figure 1 As shown in the figure, the main ruler measuring claw 12 is made to contact the end face of the capacitor to be measured near its waist, and then the position of the secondary ruler 3 is adjusted with the ruler frame 2 as the base point, until the longitudinal measuring rod 4 at the upper end of the secondary ruler 3 is adjusted to the right side of the waist of the capacitor to be measured. In this process, the fixed grid and the moving grid are partially overlapped, and because the two are not in direct contact, there is a certain gap, so that a pair of capacitors are formed between the fixed grid and the moving grid. During the measurement process, when the main ruler 1 and the secondary ruler 3 move vertically along the ruler body direction, the relative covering length of each pair of capacitors will change periodically from large to small and from small to large, and the capacitance value will also change periodically accordingly. After conversion and processing by the processor 101, the mechanical displacement values ​​of the main ruler 1 and the secondary ruler 3 relative to the upper end face of the ruler frame 2 can be measured, and the axial height of the capacitor to be measured and the height of its waist can be obtained.

[0113] The measuring principle of the main scale 1 and the auxiliary scale 3 of the present invention is based on the capacitance sensor measuring principle of the existing digital caliper and is adaptively improved on this basis, so that the main scale 1 and the auxiliary scale 3 can simultaneously measure the height of the capacitor to be measured and the height of the waist, without repeatedly clamping and adjusting the position of the capacitor to be measured to measure its different types of dimensional data. Under the premise of ensuring the measurement accuracy, the complicated steps of the measurement operation are greatly reduced, and the detection speed and efficiency are greatly improved.

[0114] Further, see Figure 2 As shown, the digital caliper of the present invention also includes:

[0115] The wireless communication module 102 is arranged on the main board 100 in the ruler frame 2 and is electrically connected to the processor 101, and is used to wirelessly connect the digital caliper of the present invention to a terminal device such as a user's smart phone, so as to send measurement data to the user's smart phone, thereby replacing the work of the measurement personnel manually recording the measurement data, facilitating the recording and storage of the measurement data, reducing the workload of the measurement personnel, and improving the detection efficiency.

[0116] Preferably, the wireless communication module 102 in this embodiment is a Bluetooth module, because the Bluetooth module technology is simple, has a wide range of applications, and has a relatively low cost, low power consumption, and can be wirelessly connected to different types of smart devices, and has strong applicability. Of course, in some other embodiments, the wireless communication module 102 can completely use a ZigBee module or a WiFi module, as long as the present invention can be wirelessly connected to the user's terminal device to transmit the detection data.

[0117] Further, see Figure 1As shown, the ruler frame 2 of the present invention is provided with a power switch key 26, a reset key 27, a unit conversion key 28 and a wireless communication switch key 29 which are electrically connected to the processor 101. In actual use, the power switch key 26 can be used to control the power on and off of the present invention, the reset key 27 can be used to ensure that the main ruler 1 and the auxiliary ruler 3 can be reset to zero in the initial standby state, the unit conversion key 28 can be used to convert the measurement unit, and the wireless communication switch key 29 can be used to control the switch of the Bluetooth module, and the Bluetooth communication function can be turned off when the measurement data recording is not needed to reduce power consumption.

[0118] Further, see Figure 1 As shown, in order to facilitate the fixation of the main ruler 1 and the auxiliary ruler 3 during the measurement process and ensure the measurement accuracy, the ruler frame 2 of the present invention is also provided with a first locking member 30 and a second locking member 301 for respectively locking and fixing the main ruler 1 and the auxiliary ruler 3.

[0119] The above embodiment is only for the purpose of clearly describing a specific implementation of the present invention, and is not intended to limit the implementation of the present invention. For those skilled in the art, other adjustments or changes to the main scale 1, scale frame 2, circular support mechanism 21, first distance sensor 222 assembly 22, secondary scale 3, longitudinal measuring rod 4, waisted anvil assembly 5, second distance sensor 61 assembly 6, capacitive grid sensor assembly 7, etc. can be deduced and summarized based on the present invention, which will not be listed one by one here. Any modification, replacement or improvement made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A digital caliper for quickly measuring various sizes of capacitors, including: A main ruler (1) having a main ruler measuring claw (12) disposed horizontally at its upper end and perpendicular to the ruler body; A ruler frame (2) is slidably connected to the main ruler (1), and is provided with a ruler frame measuring claw assembly that cooperates with the main ruler measuring claw (12) to clamp the capacitor to be measured; It is characterized in that The ruler frame measuring claw assembly includes: A circular support mechanism (21) is horizontally fixedly connected to one side of the upper end of the ruler frame (2), and its transverse diameter corresponds to the extension direction of the main ruler claw (12), and is used to support the end face of the capacitor facing away from the waist portion and limit and fix the capacitor in its middle position; A first distance measuring sensor assembly (22), arranged on the circular support platform mechanism (21) and evenly distributed around the periphery of the capacitor to be measured, for measuring the distance between the first distance measuring sensor assembly and the outer wall of the capacitor to be measured and converting the distance into a measurement electrical signal; The digital caliper also includes: The auxiliary ruler (3) is slidably connected to the ruler frame (2) and is located on a side of the main ruler (1) opposite to the main ruler measuring claw (12). A longitudinal measuring rod (4) is provided horizontally and longitudinally at the upper end of the auxiliary ruler (3) corresponding to the main ruler measuring claw (12). The main ruler measuring claw (12) is located on the mid-vertical line of the longitudinal measuring rod (4). Two waist measuring anvil assemblies (5) are correspondingly connected to the two ends of the longitudinal measuring rod (4) in a horizontal and transverse sliding manner and extend toward one side of the main ruler measuring claw (12), and are used to move toward each other along the longitudinal measuring rod (4) to clamp the waist of the capacitor when the upper end of the secondary ruler (3) moves to one side of the waist of the capacitor to be measured; A second distance measuring sensor assembly (6) is arranged on the waist measuring anvil assembly (5) and is used to measure the distance between the waist measuring anvil assemblies (5) clamped on both sides of the waist of the capacitor to be measured and convert it into a measuring electrical signal; A capacitive grid sensor assembly (7) is disposed between the main scale (1), the auxiliary scale (3) and the scale frame (2), and is used to measure the displacement of the main scale (1) and the auxiliary scale (3) relative to the scale frame (2) and convert it into a measurement electrical signal; A processor (101) is disposed in the ruler frame (2), and is electrically connected to the first distance measuring sensor assembly (22), the second distance measuring sensor assembly (6), and the capacitor grid sensor assembly (7), and is used to receive and process the measurement electrical signals sent by each sensor assembly to calculate the diameter of the measured capacitor, the diameter of the capacitor waist, the height of the capacitor, the height of the capacitor waist, and to calculate the depth of the capacitor waist; A display (8) is disposed on the ruler frame (2) and is electrically connected to the processor (101) via a display circuit to display the measurement result.

2. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The circular support mechanism (21) comprises: A circular pedestal (211) is horizontally fixedly connected to one side of the upper end of the ruler frame (2), its upper end surface is flush with the upper end surface of the ruler frame (2), its diameter is larger than the diameter of the largest capacitor to be measured, and at least three limiting guide grooves (212) are evenly distributed in the radial direction; The limiting clamping rods (213) are movably inserted into the limiting guide grooves (212) in a one-to-one correspondence, and the upper ends thereof extend vertically outward from the upper end surface of the circular pedestal (211) so as to clamp and fix the capacitor to be tested on the circular pedestal (211) under the guidance of the limiting guide grooves (212) so that the two are on the same axis; The circular drive seat (214) is coaxially rotatably connected under the circular pedestal (211), and is evenly distributed with arc-shaped drive grooves (215) having the same number as the limit guide grooves (212). The lower ends of the limit clamping rods (213) are movably connected in the arc-shaped drive grooves (215) in a one-to-one correspondence, so that when the circular drive seat (214) is screwed by an external force, the arc-shaped drive grooves (215) drive the limit clamping rods (213) to move synchronously toward or away from the limit guide grooves (212) to clamp or release the capacitor under test.

3. A digital caliper for quickly measuring capacitors of various sizes according to claim 2, characterized in that: The circular drive seat (214) has an annular outer wall uniformly distributed with anti-slip grooves (219) that facilitate user rotation.

4. A digital caliper for quickly measuring capacitors of various sizes according to claim 2, characterized in that: A self-clamping tension spring (220) for driving the position-limiting clamping rod (213) to automatically clamp the capacitor under test is provided between the circular pedestal (211) and the circular driving seat (214).

5. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The first distance measuring sensor component (22) comprises: A plurality of measuring columns (221) are evenly distributed vertically at the edge of the upper end surface of the circular support platform mechanism (21), and the height of the measuring columns is not greater than the height of the waist of the smallest capacitor to be measured; The first distance measuring sensors (222) are respectively fixedly mounted on the upper part of the measuring column (221) on the side facing the axis of the circular support platform mechanism (21), and are used to transmit detection signals to the side wall of the capacitor to be measured and receive reflection signals. The first distance measuring sensors (222) are selected from the group consisting of a laser distance measuring sensor, an infrared distance measuring sensor, an ultrasonic distance measuring sensor, and a radar distance measuring sensor.

6. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The second distance measuring sensor assembly (6) comprises: The second distance measuring sensor (61) is arranged on a side of one of the waisted anvil assemblies (5) facing the main scale measuring claw (12), and is correspondingly located outside the gap between the main scale (1) and the secondary scale (3) so as to transmit a detection signal to the other waisted anvil assembly (5) through the gap and receive a reflected signal, and is one of a laser distance measuring sensor, an infrared distance measuring sensor, an ultrasonic distance measuring sensor, or a radar distance measuring sensor.

7. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The capacitive sensor assembly (7) comprises: A first fixed grid (71) is arranged vertically on a side wall of the main ruler (1) on a side facing the main ruler measuring claw (12); a first moving fence (72) arranged vertically on a side wall of the ruler frame (2) corresponding to a first slot (23) for plugging into a ruler body of the main ruler (1) and corresponding to a side of the first fixed fence (71), and the first moving fence (72) and the first fixed fence (71) are not in direct contact with each other; A second fixed grid (73) is arranged vertically on a side wall of the ruler frame (2) and is used to match and insert the second slot (24) of the ruler body of the secondary ruler (3); The second moving grid (74) is arranged vertically on a side wall of the secondary ruler (3) corresponding to the second fixed grid (73), and the second moving grid (74) is not in direct contact with the second fixed grid (73).

8. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The digital caliper also includes: The wireless communication module (102) is arranged in the ruler frame (2) and is electrically connected to the processor (101), and is used to wirelessly connect the digital caliper to the user's terminal device to send measurement data thereto, and is one of a Bluetooth module, a ZigBee module, or a WiFi module.

9. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The ruler frame (2) is provided with a power switch (26), a reset key (27), a unit conversion key (28) and a wireless communication switch key (29).

10. A digital caliper for quickly measuring capacitors of various sizes according to claim 1, characterized in that: The ruler frame (2) is provided with a first locking member (30) and a second locking member (301) for respectively locking and fixing the main ruler (1) and the auxiliary ruler (3).

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