Calibrating device

Abstract

The utility model discloses a calibrating device. The calibrating device comprises a first calibrating column and a second calibrating column, the axis of the first verification column is parallel to the first direction, the first verification column is provided with a first insertion end and a first driving end which are oppositely distributed in the first direction, the first insertion end is suitable for being inserted into a device to be verified, and the first driving end extends in the direction crossed with the first direction. The axis of the second verification column is parallel to the first direction, the second verification column is provided with a second insertion end and a second driving end which are oppositely distributed in the first direction, the second insertion end is suitable for being inserted into a device to be verified, and the second driving end extends in the direction crossed with the first direction. Wherein the first driving end and the second driving end extend in different directions, and / or the first driving end and the second driving end extend in the same direction, and the lengths of the first driving end and the second driving end are different. According to the application, the first verification column and / or the second verification column which do not participate in work can be rapidly retracted so as to avoid a shell of a to-be-verified device, and the shell (appearance) of a detected electric energy meter is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter calibration, and in particular to a calibration device. Background Technology

[0002] In modern industrial and scientific experimental environments, calibration devices are widely used to test and calibrate various types of devices to be calibrated. These devices vary greatly in type, design, and the location, shape, and size of their terminals. To ensure that the performance of the device to be calibrated meets the specified standards, the calibration device must be able to accurately connect to the relevant terminals of the device and perform the necessary measurement or calibration operations.

[0003] Traditional calibration devices are typically equipped with multiple calibration posts to accommodate different models and specifications of devices to be calibrated. However, in practical applications, due to significant differences in the terminal layout of different devices, some calibration posts on the calibration device may not be able to mate with the valid terminals of the device being calibrated. When these unused calibration posts come into contact with the housing of the device being calibrated, they may be forced to retract due to external force. This process may cause mechanical damage to the calibration posts, shorten their service life, increase maintenance costs, and potentially lead to inaccurate calibration results. Utility Model Content

[0004] The main purpose of this invention is to provide a testing device that can quickly retract the first and / or second testing columns that are not involved in the operation, so as to avoid the outer shell of the device to be tested. This not only prevents damage to the outer shell (appearance) of the tested electricity meter, but also prevents damage to the first and second testing columns.

[0005] To achieve the above objectives, some embodiments of this utility model provide a testing device, comprising:

[0006] The first calibration post has an axis parallel to the first direction. The first calibration post has a first insertion end and a first driving end that are relatively distributed along the first direction. The first insertion end is adapted to insert into the device to be calibrated, and the first driving end extends in a direction that intersects with the first direction.

[0007] The second calibration post has an axis parallel to the first direction. The second calibration post has a second insertion end and a second driving end that are relatively distributed along the first direction. The second insertion end is adapted to insert into the device to be calibrated, and the second driving end extends in a direction that intersects with the first direction.

[0008] The first driving end and the second driving end extend in different directions, and / or the first driving end and the second driving end extend in the same direction, and their lengths are different.

[0009] In some embodiments, the surface of the first driving end is configured to be insulating, and the surface of the second driving end is configured to be insulating.

[0010] In some embodiments, the first driving end includes a first connecting segment and a first bending segment, the first connecting segment extending along a first direction, and the first bending segment protruding from the first connecting segment along a second direction;

[0011] The second driving end includes a second connecting section and a second bending section, the second connecting section extends along a first direction, and the second bending section protrudes from the second connecting section along a second direction;

[0012] The first and second verification columns are distributed at intervals along a third direction, and the first, second, and third directions are perpendicular to each other.

[0013] In some embodiments, the first bending segment and the second bending segment bend in the same direction along the second direction, and the length of the second bending segment is less than the length of the first bending segment.

[0014] In some embodiments, along the first direction, the length L1 of the first connecting segment satisfies:

[0015] 8mm≤L1≤25mm;

[0016] Along the second direction, the length L2 of the first bend satisfies:

[0017] 6mm≤L2≤20mm;

[0018] Along the first direction, the thickness L3 of the first bent segment satisfies:

[0019] 3.5mm≤L3≤6mm.

[0020] In some embodiments, along the first direction, the length L4 of the second connecting segment satisfies:

[0021] 10mm≤L4≤25mm;

[0022] Along the second direction, the length L5 of the second bend segment satisfies:

[0023] 6mm≤L5≤20mm;

[0024] Along the first direction, the thickness L6 of the second bending segment satisfies:

[0025] 3.5mm≤L6≤8mm.

[0026] In some embodiments, the testing device further includes a third testing column, the axis of which is parallel to the first direction. The third testing column has a third insertion end and a third driving end that are relatively distributed along the first direction. The third insertion end is adapted to insert into the device to be tested, and the third driving ends all extend in a direction that intersects the first direction.

[0027] The first driving end extends in the same direction as the second driving end, while the third driving end extends in the opposite direction to the first driving end.

[0028] In some embodiments, the surfaces of the third driving end are all configured to be insulated.

[0029] In some embodiments, the third driving end includes a third connecting segment and a third bending segment, the third connecting segment extends along a first direction, and the third bending segment protrudes from the third connecting segment along a second direction;

[0030] The first and third verification columns are distributed at intervals along the third direction, and the first, second and third directions are perpendicular to each other.

[0031] In some embodiments, along the first direction, the length L7 of the third connecting segment satisfies:

[0032] 10mm≤L7≤25mm;

[0033] Along the second direction, the length L8 of the third bend segment satisfies:

[0034] 6mm≤L8≤10mm;

[0035] Along the first direction, the thickness L9 of the third bend segment satisfies:

[0036] 3.5mm≤L9≤8mm.

[0037] According to the above embodiments, the beneficial effects of this utility model are:

[0038] The testing device of this utility model includes a first testing column and a second testing column. The axis of the first testing column is parallel to a first direction. The first testing column has a first insertion end and a first driving end that are relatively distributed along the first direction. The first insertion end is suitable for inserting the device to be tested. The first driving end extends in a direction that intersects with the first direction. The first insertion end is used to bear the driving force. The design of the first insertion end extending intersecting with the first direction makes it unnecessary for the first testing column to be subjected to a force that coincides with its own axis when it moves along the first direction.

[0039] The axis of the second calibration post is parallel to the first direction. The second calibration post has a second insertion end and a second driving end that are distributed opposite to each other along the first direction. The second insertion end is suitable for inserting the device to be calibrated. The second driving end extends in a direction that intersects with the first direction. The first insertion end is used to bear the driving force. The design of the first insertion end extending intersecting with the first direction makes it unnecessary for the first calibration post to be subjected to a force that coincides with its own axis when it moves along the first direction.

[0040] The first and second driving ends extend in different directions, and / or they extend in the same direction, but with different lengths. This design ensures that the first and second driving ends do not interfere with each other when moving under driving force, providing good flexibility. Furthermore, the structures applying driving force to the first and second driving ends can be arranged in layers, resulting in rational and compact space utilization. Because a driving force can be actively applied to the first and second verification columns, the telescopic movement of the first and second verification columns along the first direction can be actively controlled. Therefore, in practical use, the verification device of this application can quickly retract the first and / or second verification columns that are not involved in operation to avoid damage to the outer casing of the device to be verified. This not only prevents damage to the casing (appearance) of the tested energy meter but also prevents damage to the first and second verification columns.

[0041] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0043] Figure 1 This is a three-dimensional structural diagram of the first verification column in one embodiment of the present invention;

[0044] Figure 2 for Figure 1 A side view of the first inspection column;

[0045] Figure 3 This is a three-dimensional structural diagram of the second verification column in one embodiment of the present invention;

[0046] Figure 4 for Figure 3 A side view of the second verification column;

[0047] Figure 5 This is a three-dimensional structural diagram of the third verification column in one embodiment of the present invention;

[0048] Figure 6 for Figure 5 A side view of the third verification column;

[0049] Figure 7This is a schematic diagram of the structure of the testing device in one embodiment of the present invention, wherein the first testing column, the second testing column and the third testing column all extend along the first direction;

[0050] Figure 8 This is a schematic diagram of the connection status of a two-position three-phase energy meter connected via a current transformer in one embodiment of the present invention.

[0051] Figure 9 This is a schematic diagram of the connection status when the verification device is a two-position three-phase direct-connection energy meter in one embodiment of the present invention.

[0052] Figure 10 This is a schematic diagram of the connection status when the testing device is a 3-position single-phase energy meter in one embodiment of the present invention.

[0053] Explanation of icon numbers:

[0054] Verification device 10;

[0055] First calibration column 100; first drive end 110; first connecting section 111; first bending section 112; first insertion end 120;

[0056] Second calibration column 200; second drive end 210; second connecting section 211; second bending section 212; second insertion end 220;

[0057] Third calibration column 300; Third drive end 310; Third connecting section 311; Third bending section 312; Third insertion end 320;

[0058] Drive mechanism 400;

[0059] First direction X; third direction Y; second direction Z.

[0060] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0062] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0063] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0064] The following is for reference. Figures 1 to 10 The present invention describes a testing device 10 according to an embodiment of the present invention. In some embodiments, the testing device 10 of the present application includes a first testing post 100 and a second testing post 200. The testing device 10 of the present application can be an electricity meter, wherein the first testing post 100 can be configured as a voltage terminal and the second testing post 200 can be configured as a current terminal, or the first testing post 100 can be configured as a current terminal and the second testing post 200 can be configured as a voltage terminal.

[0065] Reference Figure 1 and Figure 2The axis of the first calibration post 100 is parallel to the first direction X. The first calibration post 100 has a first insertion end 120 and a first driving end 110 that are relatively distributed along the first direction X. The first insertion end 120 is adapted to insert into the device 10 to be calibrated. When the first calibration post 100 is a current terminal, the first calibration post 100 is inserted into the terminal of the device 10 to be calibrated to obtain the current signal of the device 10 to be calibrated. When the first calibration post 100 is a voltage terminal, the first calibration post 100 is inserted into the terminal of the device 10 to be calibrated to obtain the voltage signal of the device 10 to be calibrated. The first driving end 110 and the first insertion end 120 are distributed opposite to each other. The first insertion end 120 is the end of the first verification post 100 closer to the device to be verified 10, which can be referred to as the head end of the first verification post 100. The first driving end 110 is the end of the first verification post 100 farther from the device to be verified 10, which can be referred to as the tail end of the first verification post 100. The first driving end 110 is driven by a driving force to move the first verification post 100 along a preset trajectory. The first driving end 110 extends in a direction intersecting the first direction X, that is, the first driving end 110 has a portion that protrudes outward along the axis of the first verification post 100 itself. This protruding portion can be used to connect other driving structures. For example, the driving mechanism 400 is a plate and a cylinder. The cylinder drives the plate to move along the preset trajectory. The plate is provided with a groove or a through hole. The protruding structure is embedded in the groove or the protruding structure passes through the through hole on the plate so that the first verification post 100 moves synchronously with the movement of the plate.

[0066] This design allows the first calibration post 100 to move along the first direction X without coinciding with its axis when the driving force is applied. Furthermore, when multiple first calibration posts 100 need to move simultaneously along the first direction X, the first drive ends 110 of the multiple first calibration posts 100 can be designed to be fixed to the connecting plate of the drive mechanism 400. As the connecting plate moves towards the first direction X, the multiple first calibration posts 100 move synchronously towards the first direction X, thereby achieving the effect of the first insertion end 120 extending into or retracting from the working position of the device to be calibrated 10.

[0067] Since the driving force does not necessarily coincide with the axis of the first calibration column 100, the use of a cross-extending first drive end 110 allows the first calibration column 100 to complete complex motion transformations within a smaller space, reducing the overall size of the equipment. Simultaneously, because the first drive end 110 is arranged cross-shaped with the first direction X, this helps prevent damage caused by accidental collisions, increasing the safety of the equipment.

[0068] Furthermore, the design of the first drive end 110 can be customized with different geometries depending on the specific application scenario. For example, in some embodiments, if a larger lateral force is required, it can be designed as a flat structure or a structure with an inclined surface; in other embodiments, if higher space utilization is desired, a slender design or a polygonal cross-section design can be chosen. These variations not only meet the needs of different operating conditions but also improve overall performance.

[0069] In some embodiments, to account for potential vibrations or impacts, a damping element, such as a rubber washer or a spring, can be added between the first drive end 110 and the first insertion end 120. This reduces noise and wear during mechanical transmission, extending the equipment's lifespan. Additionally, the damping element can act as a buffer, protecting sensitive components from excessive impacts.

[0070] In some embodiments, considering the influence of environmental conditions, the first calibration column 100 can be made of a material with strong weather resistance or coated with a material to ensure that it can function normally under harsh conditions. Surface treatment techniques, such as plating or coating, can also be considered to improve the wear resistance and corrosion resistance of the components.

[0071] In some embodiments, the connections between the first calibration columns 100 should be modularly designed as much as possible to facilitate maintenance and replacement. This means that users can easily disassemble or assemble individual parts as needed without worrying about affecting other components. This not only simplifies the maintenance process but also reduces costs.

[0072] Reference Figure 3 and Figure 4 In some embodiments, the axis of the second verification post 200 is parallel to the first direction X. The second verification post 200 has a second insertion end 220 and a second driving end 210 that are relatively distributed along the first direction X. The second insertion end 220 is adapted to be inserted into the device to be verified 10, and the second driving end 210 extends in a direction intersecting the first direction X. The design concept of the second verification post 200 is similar to that of the first verification post 100, and the effects of the second insertion end 220 and the second driving end 210 are also similar to those of the first insertion end 120 and the first driving end 110, which will not be described in detail here.

[0073] The second driving end 210 and the first driving end 110 extend in different directions, and / or they extend in the same direction but with different lengths. This design ensures that the first driving end 110 and the second driving end 210 do not interfere with each other when moving under driving force, providing good flexibility. Furthermore, the structures applying driving force to the first driving end 110 and the second driving end 210 can be arranged in layers, resulting in reasonable and compact space utilization. Since driving force can be actively applied to the first verification column 100 and the second verification column 200, the telescopic movement of the first verification column 100 and the second verification column 200 along the first direction X can be actively controlled. Therefore, in actual use, the verification device 10 of this application can quickly retract the first verification column 100 and / or the second verification column 200 that are not involved in the operation to avoid the outer casing of the device 10 to be verified. This not only prevents damage to the outer casing (appearance) of the tested energy meter but also prevents damage to the first verification column 100 and the second verification column 200.

[0074] Specifically, refer to Figure 3 and Figure 4 In some embodiments, the first driving end 110 extends downward and the second driving end 210 extends upward. The driving mechanism 400 includes a first cylinder, a first connecting plate, a second cylinder, and a second connecting plate. The first cylinder drives the first connecting plate to move along a first direction X, and the second cylinder drives the second connecting plate to move along the first direction X. The first driving end 110 is connected to the first connecting plate of the driving mechanism 400, so the first verification column 100 can move synchronously with the first connecting plate as it moves. The second driving end 210 is connected to the second connecting plate of the driving mechanism 400, so the second verification column 200 can move synchronously with the second connecting plate as it moves. In this embodiment, the surfaces of the first and second connecting plates can be designed to be parallel, and the first and second connecting plates can be stacked, i.e., the second connecting plate is located above the first connecting plate. This not only saves space but also enables the simultaneous synchronous movement of each first verification column 100 and each second verification column 200, making the operation steps of the verification device 10 more hierarchical, simplifying the logic of the verification device 10, and improving efficiency.

[0075] In some embodiments, the first driving end 110 extends downwards, and the second driving end 210 extends downwards, but the downward extension length of the first driving end 110 is longer than the downward extension length of the second driving end 210. The first verification post 100 and the second verification post 200 are respectively connected to the aforementioned driving mechanism 400. In this case, the first connecting plate and the second connecting plate can also be arranged in a parallel, stacked manner. Specifically, the second connecting plate connected to the shorter second driving end 210 is located above the first connecting plate connected to the longer first driving end 110. Similarly, this design enables the simultaneous synchronous movement of the first verification post 100 and the second verification post 200, making the operation steps of the verification device 10 more hierarchical, simplifying the logic of the verification device 10, and improving efficiency.

[0076] Regarding the application scenarios of the verification device 10 of this application, specifically, for example, when the verification device 10 of this application switches from verifying single-phase electricity meters to verifying three-phase electricity meters, or verifies single-phase electricity meters with different interfaces, different types of electricity meters have different wiring ports, or it is necessary to select specific first verification columns 100 and second verification columns 200 for verification. At this time, in order to avoid interference between the ends of other first verification columns 100 and second verification columns 200 and the outer wall of the device 10 to be verified, which would cause damage to the casing (appearance) of the electricity meter being tested, it is necessary to retract the first verification columns 100 and second verification columns 200 that are not involved in the operation. Through the design of this application, a specific batch of first verification columns 100 can be retracted simultaneously, and a specific batch of second verification columns 200 can be retracted simultaneously, achieving the effect of avoiding the casing of the device 10 to be verified. The verification device 10 of this application has high working efficiency, simple logic, and reasonable and compact internal space. The extension and retraction of the first verification column 100 and the second verification column 200 in batches have been described previously and will not be repeated here. It should be noted that the design of the first drive end 110 and the second drive end 210 ensures that the first verification column 100 and the second verification column 200 do not interfere with each other when extending or retracting along the first direction X, allowing them to work simultaneously. For example, during the retraction of the first verification column 100, the second verification column 200 can also retract. At this time, the first verification column 100 does not interfere with each other, the second verification column 200 does not interfere with each other, and the first and second verification columns do not interfere with each other. Furthermore, the first connecting plate, the second connecting plate, the first verification column 100, and the second verification column 200 do not interfere with each other. Therefore, this application can significantly improve work efficiency and accuracy for applications requiring multi-point synchronous detection.

[0077] In some embodiments, the first verification columns 100 can be arranged side by side in a horizontal direction, and the first verification columns 100 can also be arranged at different heights, as long as the first drive end 110 of each first verification column 100 is connected to the first connecting plate and moves synchronously with the first connecting plate. Similarly, the second verification columns 200 can be arranged side by side in a horizontal direction, and the second verification columns 200 can also be arranged at different heights, as long as the second drive end 210 of each second verification column 200 is connected to the second connecting plate and moves synchronously with the second connecting plate.

[0078] Regarding the connection method of the first driving end 110 to the first connecting plate, specifically, the portion of the first driving end 110 extending intersecting the first direction X can be welded to the first connecting plate so that it moves along the first direction X with the first connecting plate. This part of the structure can also achieve synchronous movement of the first verification column 100 and the first connecting plate by means of through holes in the first connecting plate, grooves embedded in the first connecting plate, or adhesive to the first connecting plate. The connection method of the second verification column 200 to the second connecting plate is similar and will not be described again here. The purpose of this connection is to enable multiple first verification columns 100 to move synchronously along the first direction X, and multiple second verification columns 200 to move synchronously along the first direction X. Therefore, the first connecting plate and the second connecting plate are only intermediate transitional structures. There are no limitations on the shape of the connecting plate, the connection method between the first connecting column and the first connecting plate, or the connection method between the second connecting column and the second connecting plate. It is only necessary to use a platform to realize the connection of each first connecting column and second connecting column.

[0079] Regarding the design of the first driving end 110 and the second driving end 210 extending intersectingly with the first direction X, in some embodiments, the extension direction of the first driving end 110 can be perpendicular to the first direction X. For example, if the axis of the first verification post 100 is horizontal, the first driving end 110 extends vertically downward, or the first driving end 110 extends horizontally perpendicular to the axis of the first verification post 100. The extension direction of the first driving end 110 can also be inclined to the first direction X. For example, the angle between the extension direction of the first driving end 110 and the axis of the first verification post 100 is an acute angle. The design of the second driving end 210 is similar to that of the first driving end 110, and will not be described again here. Regarding the design of the first driving end 110 and the second driving end 210, it is only necessary to ensure that the first verification post 100 and the second verification post 200 do not interfere with each other during their movement along the first direction X.

[0080] In some embodiments, to improve the response speed and positioning accuracy of the first verification column 100 and the second verification column 200, high-precision sensors and a fast feedback control system can be introduced. By monitoring the position and state of the second insertion end 220 in real time, the control system can react quickly and correct any deviations in a timely manner. In addition, by combining advanced motion control algorithms, such as PID control or adaptive control, the movements of the first verification column 100 and the second verification column 200 can be made smoother and more accurate.

[0081] In some embodiments, to enhance the intelligence of the second verification column 200, an automatic calibration function can be integrated therein. After each round of testing, the system automatically compares the current reading with a preset standard value and makes necessary corrections accordingly. This not only ensures the consistency of each test result but also automatically compensates for changes caused by the passage of time or other external factors, thereby maintaining high testing quality at all times.

[0082] It is understood that, in some embodiments, the drive ends of the first verification post 100 and the second verification post 200 can be designed to be adjustable in angle, meaning they are not limited to a fixed cross direction, but can also be adjusted in angle through specific mechanical connections (such as hinges or ball joints). This increases the flexibility of the verification device 10, enabling it to be used in more complex spatial conditions.

[0083] In some embodiments, for applications requiring precise control of torque or displacement, the difference in length between the drive ends can be used to generate different lever arm effects, thereby affecting the final calibration results. If the two drive ends face the same direction, the difference in length will directly affect the maximum force or torque that can be applied, which is a very important parameter for some high-precision calibrations.

[0084] In some embodiments, considering the different types and sizes of devices 10 to be tested that may be encountered during the verification process, the insertion ends of the first verification column 100 and the second verification column 200 can be equipped with interfaces or adapters of various specifications. These interfaces or adapters can be installed on the verification columns through a quick-change mechanism to meet the verification requirements of different models of equipment. Meanwhile, to ensure the safety and reliability of the verification process, the verification columns themselves and their various components are made of high-strength materials and undergo rigorous surface treatment processes to enhance wear resistance and corrosion resistance.

[0085] Reference Figures 1 to 4In some embodiments, the surfaces of the first drive end 110 and the second drive end 210 of the calibration device 10 are configured to be insulated. Insulation here means that the drive end is made of a non-conductive material or has an insulating coating on its surface. The main purpose of this is to avoid potential current leakage problems during calibration, especially when calibrating electrical equipment. The insulation design effectively protects the safety of operators and prevents accidental electric shock. Simultaneously, the insulated surface also reduces electromagnetic interference, ensuring the accuracy and stability of the calibration data.

[0086] It is understandable that in some embodiments, in addition to simple surface insulation treatment, the testing device 10 can take more measures to enhance safety performance. For example, the drive end can be provided with a multi-layer insulation structure, each layer composed of insulating materials with different properties, forming a composite insulation barrier. This multi-layer structure not only provides higher insulation strength but also provides redundant protection in the event of failure of a certain layer. Furthermore, to address the possibility of operation in extreme environments, the drive end of the testing device 10 can also integrate temperature and humidity sensors to monitor changes in the working environment in real time and adjust its own operating status or issue warning signals accordingly to remind the operator to take necessary protective measures. In addition, for certain special industries (such as the medical field), the insulating material of the drive end can also be biocompatible, ensuring that it will not harm human health even when used near the human body.

[0087] Reference Figure 1 and Figure 2In some embodiments, the first drive end 110 of the verification device 10 includes a first connecting segment 111 and a first bent segment 112, and the second drive end 210 includes a second connecting segment 211 and a second bent segment 212. The first connecting segment 111 extends along a first direction X, ensuring continuity and stability from the insertion end to the drive end, while the first bent segment 112 protrudes from the first connecting segment 111 along a second direction Z, forming a structural change perpendicular to the first direction X. This allows the first drive end 110 to be spatially offset, thereby better adapting to different operational requirements, i.e., it is not necessary to apply a driving force to the first drive end 110 along a direction coinciding with the axis of the first verification post 100. Similarly, the second drive end 210 is composed of a second connecting segment 211 and a second bent segment 212, wherein the second connecting segment 211 extends along the first direction X, and the second bent segment 212 protrudes along the second direction Z. The first verification post 100 and the second verification post 200 are spaced apart along the third direction Y, and the first direction X, the second direction Z, and the third direction Y are perpendicular to each other. This arrangement ensures that the first verification post 100 and the second verification post 200 do not interfere with each other when moving along the first direction X, and facilitates the synchronous movement of each first verification post 100 and each second verification post 200, thereby improving the accuracy and flexibility of the verification process.

[0088] It is understood that, in some embodiments, to further enhance the functionality and applicability of the testing device 10, the first connecting section 111 and the second connecting section 211 may be designed to be of adjustable length. For example, they may be adjusted in length by means of threaded connection or telescopic rod mechanism to accommodate testing devices 10 of different depths or shapes.

[0089] In some embodiments, the angles of the first bending segment 112 and the second bending segment 212 can also be adjustable, allowing the user to select the most suitable working angle according to the specific application scenario. Meanwhile, all exposed metal parts can be passivated or wrapped with insulating material to prevent accidental electric shock.

[0090] Reference Figure 3 and Figure 4In some embodiments, the first bending segment 112 and the second bending segment 212 bend in the same direction along the second direction Z, and the length of the second bending segment 212 is less than the length of the first bending segment 112. This means that when the two bending segments face the same side, the first bending segment 112 will extend further than the second bending segment 212, forming a stepped structure. The main purpose of this design is to enable the first driving end 110 to cover a larger range of action, and to allow the driven position of the first driving end 110 to be spaced apart from the driven position of the second driving end 210. The longer first bending segment 112 can provide better accessibility and ease of operation; that is, due to the length difference between the first bending segment 112 and the second bending segment 212, the structures used to drive the first bending end and the second bending segment 212 can be stacked along the length direction, resulting in higher space utilization.

[0091] It is understood that, in some embodiments, the cross-sectional shape of the first bending segment 112 and the second bending segment 212 can be designed in different forms such as circular, rectangular, or polygonal to accommodate different types of connectors. For certain specific applications, such as high-precision measurement, the thickness and hardness of the bending segment will also be strictly controlled to ensure that the results are not affected by its own deformation during inspection.

[0092] In some embodiments, to accommodate various types of devices 10 to be tested, a pitch variation may be required between the first test column 100 and the second test column 200. Considering the frictional forces that may be generated during the testing process, the surface of the bent section may be specially treated, such as by adding a lubricating coating or using a low-friction coefficient material, to reduce unnecessary energy loss, i.e., designed as a smooth, wear-resistant structure.

[0093] Reference Figure 2 In some embodiments, the length L1 of the first connecting segment 111 is set to 8mm ≤ L1 ≤ 25mm, for example, L1 is 8mm, 14mm, 18mm, 22mm, or 25mm, to ensure stability. As a preferred design, L1 is 15.5mm. Meanwhile, in some embodiments, the length L2 of the first bending segment 112 in the second direction Z is limited to 6mm ≤ L2 ≤ 20mm, for example, L2 is 6mm, 10mm, 14mm, 18mm, or 20mm, ensuring sufficient operating space without occupying excessive volume. As a preferred design, L2 is 14mm. In some embodiments, considering structural strength and material utilization, the thickness L3 of the first bending segment 112 is controlled to 3.5mm ≤ L3 ≤ 6mm, for example, L3 is 3.5mm, 4mm, 5mm, or 6mm. As a preferred design, L3 is a 4mm metal square, ensuring necessary mechanical strength while avoiding unnecessary weight increase.

[0094] Through the design of the above structure, the calibration device 10 can provide stable calibration functions within a limited space, and the dimensional parameters of each component can be adjusted according to actual applications to meet diverse usage scenarios. This not only improves the applicability of the calibration device 10, but also enhances its reliability under different operating conditions.

[0095] Understandably, in some embodiments, regarding the length L1 of the first connecting segment 111, if the application scenario has extremely high accuracy requirements, such as the inspection of high-precision mechanical parts, a longer first connecting segment 111 can be selected, for example, a maximum value close to 25mm, to ensure higher positioning accuracy. Conversely, if the application scenario has high speed requirements, such as rapid inspection in an assembly line, a shorter first connecting segment 111 can be selected, for example, a minimum value of about 8mm, thereby accelerating the inspection speed.

[0096] Regarding the length L2 of the first bending segment 112, a larger value, such as close to 20mm, can be chosen when a greater range of operational freedom is required, to facilitate complex movements by the operator; while for compact equipment, a smaller value, such as 6mm, can be chosen to reduce the overall space occupied. As for the thickness L3 of the first bending segment 112, if material cost is not a major consideration, a larger thickness, such as 6mm, can be chosen to enhance structural rigidity; conversely, if lightweight design is pursued, a minimum thickness of 3.5mm can be chosen to reduce weight and save materials.

[0097] Furthermore, considering manufacturing processes and cost control, these parts can be produced using forming methods such as stamping and casting. Especially for mass production, selecting the appropriate forming process will significantly reduce production costs. Additionally, suitable surface treatment technologies, such as plating and coating, can be selected based on the requirements of different usage environments to improve corrosion resistance and wear resistance, thereby extending service life.

[0098] Reference Figure 4 The length L4 of the second connecting segment 211 is set to 10mm ≤ L4 ≤ 25mm, for example, L4 is 10mm, 15mm, 20mm, or 25mm, making the connection of the second connecting segment 211 more stable. As a preferred design, L4 is 21mm. The length L5 of the second bending segment 212 in the second direction Z is 6mm ≤ L5 ≤ 20mm, for example, L5 is 6mm, 10mm, 14mm, 18mm, or 20mm. This design allows for minimizing the overall size of the equipment while maintaining sufficient operating space. As a preferred design, L5 is 6mm. The thickness L6 of the second bending segment 212 is limited to 3.5mm ≤ L6 ≤ 8mm, for example, L6 is 3.5mm, 5mm, 7mm, or 8mm, ensuring appropriate mechanical strength and material efficiency. As a preferred design, L6 is 6mm.

[0099] This structural design enables the second calibration column 200 to perform exceptionally well in a variety of testing tasks, especially when fine adjustments are required or operations are performed in confined spaces. It ensures good operational performance without compromising the trend towards miniaturization, making it ideal for the demands of modern industrial environments for efficient, compact equipment.

[0100] Understandably, in some embodiments, regarding the length L4 of the second connecting segment 211, if used in an environment where the device to be calibrated 10 needs to be frequently changed, a longer connecting segment (e.g., close to 25 mm) can help the user more easily identify and operate the calibration column, improving work efficiency. However, in space-constrained situations, such as within a portable toolbox, a shorter connecting segment (e.g., 10 mm) helps save space and facilitates portability.

[0101] Regarding the length L5 of the second bending segment 212, a longer bending segment (e.g., close to 20mm) provides greater operational flexibility when facing complex operating environments, such as multi-angle adjustment requirements; while under simple and direct operating conditions, a shorter bending segment (e.g., 6mm) is sufficient to meet the needs, while reducing potential collision risks. As for the thickness L6 of the second bending segment 212, if durability is the priority, a larger thickness, such as 8mm, can be selected to increase resistance to deformation; if weight and cost are the focus, a smaller thickness, such as 3.5mm, can be selected to achieve the goals of lightweighting and economy.

[0102] Furthermore, to further optimize product performance, additional functionalities could be added to the second calibration column 200, such as integrating sensor monitoring for real-time feedback of data changes during the testing process, or designing it as a modular structure for easier maintenance and upgrades. These improvements not only enhance the product's practical value but also provide users with a more convenient and efficient user experience.

[0103] Reference Figure 5 and Figure 6 In some embodiments, the testing device 10 further includes a third testing post 300, the axis of which is parallel to the first direction X. The third testing post 300 has a third insertion end 320 and a third driving end 310 that are relatively distributed along the first direction X. The third insertion end 320 is adapted to be inserted into the device 10 to be tested, and the third driving ends 310 all extend in a direction intersecting the first direction X. Specifically, the first driving end 110 and the second driving end 210 extend in the same direction, while the third driving end 310 extends in the opposite direction to the first driving end 110.

[0104] This structural design ensures that the first verification column 100, the second verification column 200, and the third verification column 300 can extend and retract along the first direction X without interference, and that the first verification columns 100, the second verification columns 200, and the third verification columns 300 can extend and retract synchronously. Furthermore, the first verification columns 100, the second verification columns 200, and the third verification columns 300 can simultaneously act on different parts of the device 10 to be verified, achieving multi-point synchronous detection. By adjusting the extension direction of each drive end, the verification device 10 can be adapted to more complex detection tasks, improving detection accuracy and efficiency. For example, when detecting symmetrical or asymmetrical mechanical parts, different drive end directions can be set to ensure comprehensive coverage of all key measurement points, thereby obtaining more accurate data.

[0105] It is understandable that, in some embodiments, the design of the third drive end 310 can be flexibly adjusted according to specific application scenarios. When testing a larger device 10 to be inspected, the length of the third drive end 310 can be designed to be longer to reach farther locations; for small precision parts, a shorter third drive end 310 can be selected to ensure operational precision. Furthermore, to meet the specific needs of certain industries, such as the requirement to prevent electrostatic damage in the electronics manufacturing industry, insulating material can be applied to the surface of the third drive end 310 to ensure that no charge accumulation occurs during the testing process, protecting the safety of sensitive components.

[0106] Reference Figure 5 and Figure 6 In some embodiments, the surface of the third drive terminal 310 is configured to be insulating. The third drive terminal 310 itself can be made of an insulating material, or its surface can be coated with an insulating material to prevent current from passing through. This design avoids short circuits or other effects caused by conductivity when the third drive terminal 310 comes into contact with the inner wall of the housing of the calibration device 10.

[0107] In some embodiments, specific types of insulating materials can be selected based on the characteristics of different operating environments. For example, for the calibration device 10 operating in high-temperature environments, insulating materials with excellent heat resistance, such as silicone or Teflon, should be preferred; while in humid or dusty environments, materials with higher waterproof and dustproof ratings, such as polyurethane or epoxy resin, should be used. The application of these special materials not only enhances the adaptability of the equipment but also provides a strong guarantee for long-term stable operation.

[0108] To optimize production and reduce costs, new production processes and technologies can be explored. For example, injection molding can be used to manufacture the third drive end 310, ensuring precise shape while simplifying the production process; alternatively, 3D printing technology can be used to customize products with special specifications, meeting individual needs while improving resource utilization. In short, through continuous improvement and refinement of details, the calibration device 10 can better meet the needs of practical applications and demonstrate higher cost-effectiveness.

[0109] Reference Figure 5 In some embodiments, the third drive end 310 includes a third connecting section 311 and a third bending section 312. The third connecting section 311 extends along a first direction X, and the third bending section 312 protrudes from the third connecting section 311 along a second direction Z. The first calibration post 100 and the third calibration post 300 are distributed at intervals, with the first direction X, the second direction Z, and the third direction Y perpendicular to each other. The third bending section 312 protrudes from the third connecting section 311 along the second direction Z so that when the third calibration post 300 needs to move along the first direction X, the force acting on the third drive end 310 does not necessarily coincide with the third calibration post 300, thereby increasing the flexibility of the drive mechanism 400 used to drive the third drive end 310.

[0110] Reference Figure 6 In some embodiments, along the first direction X, the length L7 of the third connecting segment 311 satisfies 10mm ≤ L7 ≤ 25mm, for example, L7 is 10mm, 15mm, 20mm, or 25mm, preferably 21mm. Along the second direction Z, the length L8 of the third bending segment 312 satisfies 6mm ≤ L8 ≤ 10mm, for example, L8 is 6mm, 7mm, 8mm, 9mm, or 10mm, preferably 6mm. Along the first direction X, the thickness L9 of the third bending segment 312 satisfies 3.5mm ≤ L9 ≤ 8mm, for example, L9 is 3.5mm, 4mm, 5mm, 6mm, 7mm, or 8mm, preferably 6mm. This arrangement gives the third driving end 310 good structural rigidity.

[0111] It is understood that the first driving end 110, the second driving end 210 and the third driving end 310 can be formed separately and then fitted onto the main structure of the first verification post 100, the second verification post 200 and the third verification post 300. Alternatively, the first driving end 110, the second driving end 210 and the third driving end 310 can be integrally formed with the first verification post 100, the second verification post 200 and the third verification post 300 respectively.

[0112] The following is an example of a specific embodiment of the verification device 10 of this application. When the verification device 10 of this application is used as an electricity meter, the first verification post 100 can be configured as a voltage terminal, the second verification post 200 can be configured as a current terminal, and the third verification post 300 can be configured as a current terminal. The axes of the first verification post 100, the second verification post 200, and the third verification post 300 are all parallel to the first direction X, and the first verification post 100, the second verification post 200, and the third verification post 300 are arranged at intervals along the third direction Y, forming a row. The first verification end is L-shaped, with the first bending segment 112 bending downwards for a relatively long bending distance. The second verification end is L-shaped, with the second bending segment 212 bending downwards for a shorter bending distance. The third verification segment is L-shaped, with the third bending segment 312 bending upwards, and the bending distance is not affected by the first bending segment 112 and the second bending segment 212. The drive structure includes a first drive cylinder, a second drive cylinder, a third drive cylinder, a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate, the second connecting plate, and the third connecting plate are stacked sequentially from bottom to top, and their widths along the first direction X are all the same. The first bent section 112 is connected to the side of the first connecting plate opposite to the first insertion end 120, the second bent section 212 is connected to the side of the second connecting plate opposite to the second insertion end 220, and the third bent section 312 is connected to the side of the third connecting plate opposite to the third insertion end 320. With this configuration, when the first cylinder drives the first connecting plate to move along the first direction X, all the first verification columns 100 can move synchronously along the first direction X. When the second cylinder drives the second connecting plate to move along the first direction X, all the second verification columns 200 can move synchronously along the first direction X. When the third cylinder drives the third connecting plate to move along the first direction X, all the third verification columns 300 can move synchronously along the first direction X. Moreover, the movements of the first verification columns 100, second verification columns 200, third verification columns 300, first connecting plate, second connecting plate, and third connecting plate along the first direction X do not affect each other. For example, during the movement of the first verification column 100 along the first direction X, the second verification columns 200 and third verification columns 300 can also move along the first direction X. The movement of the three can be synchronous or asynchronous. The second verification column 200 or the third verification column 300 can also remain stationary.

[0113] Furthermore, when the verification device 10 is an electricity meter, and the first verification post 100 is a voltage terminal and the second verification post 200 is a current terminal, and the third verification post 300 is a current terminal, the first drive end 110, the second drive end 210, and the third drive end 310 of the voltage and current terminals (voltage terminal diameter 3mm, current terminal diameter 4mm) are equipped with corresponding springs. When various electricity meters are connected, the springs of the voltage and current terminals will be compressed. The avoidance design also relies on pulling back the compression springs to make the terminals that do not need to be connected move back, avoiding contact with the outer shell of the electricity meter being connected, and avoiding damage to the outer surface of the electricity meter. The first drive end 110, the second drive end 210, and the third drive end 310 are insulated to ensure insulation between the terminals and between the terminals and the outer shell of the mechanism.

[0114] Reference Figure 7 The partial view of the electricity meter shows that the mechanism has 24 terminals, including 8 voltage terminals (all of which are designed as the first verification terminal 100 of this application, with a first drive end 110) and 16 current terminals (3 of which are designed as the second verification terminal 200 of this application, 4 of which are designed as the third verification terminal 300 of this application, and the rest are conventional "current terminals", which are similar to conventional "voltage terminals").

[0115] Reference Figure 8 When the energy meter is in the three-phase connected energy meter state via current transformer, the two second verification columns 200 retract simultaneously. The retraction mechanism is a metal structure pull-back mode. Therefore, based on the original traditional current terminals, an innovative "upward and insulated L-shaped structure" is designed to facilitate the overall pull-back of the retraction mechanism and ensure mutual insulation.

[0116] Reference Figure 9 When the electricity meter is in the three-phase direct-connection electricity meter connection state, all 8 first verification columns 100 retract simultaneously. The retraction mechanism is a metal structure pull-back mode. Therefore, based on the original traditional voltage terminals, an innovative "downward and insulated L-shaped structure" is designed. At the same time, a layered design with a downward length greater than "avoidance and local insulation current terminals" is carried out to facilitate the overall pull-back of the retraction mechanism and ensure mutual insulation.

[0117] Reference Figure 10When the electricity meter is in the three-position single-phase electricity meter connection state, all eight first verification columns 100 retract simultaneously. The retraction mechanism is a metal structure pull-back mode. Therefore, based on the original traditional voltage terminals, an innovative "downward and insulated L-shaped structure" is designed. Simultaneously, a layered design is implemented with a downward length greater than that of the "avoidance and partial insulation current terminal," facilitating the overall pull-back of the retraction mechanism while ensuring mutual insulation. Similarly, all three second verification columns 200 retract simultaneously. The retraction mechanism is also a metal structure pull-back mode. Therefore, based on the original traditional current terminals, an innovative "downward and insulated L-shaped structure" is designed. Simultaneously, a layered design is implemented with a downward length less than that of the "avoidance and partial insulation voltage terminal," facilitating the overall pull-back of the retraction mechanism while ensuring mutual insulation.

[0118] Furthermore, in some embodiments, when the mechanism implements various connections such as single-phase energy meters, three-phase direct-connect energy meters, and three-phase energy meters connected via current transformers, Figure 7 The 24 terminals are divided into 8 modules that can move left and right to adjust the pitch. To accommodate the pitch adjustment, the L-shaped structure of the first drive end 110, the second drive end 210, and the third drive end 310 is designed to have a smooth and wear-resistant outer surface after molding.

[0119] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A testing device, characterized in that, include: The first calibration post has an axis parallel to a first direction. The first calibration post has a first insertion end and a first driving end that are relatively distributed along the first direction. The first insertion end is adapted to insert into the device to be calibrated, and the first driving end extends in a direction that intersects with the first direction. The second verification column has an axis parallel to the first direction. The second verification column has a second insertion end and a second driving end that are relatively distributed along the first direction. The second insertion end is adapted to insert into the device to be verified, and the second driving end extends in a direction that intersects with the first direction. Wherein, the first driving end and the second driving end extend in different directions, and / or the first driving end and the second driving end extend in the same direction, and their lengths are different.

2. The testing device according to claim 1, characterized in that, The surface of the first driving end is configured to be insulating, and the surface of the second driving end is configured to be insulating.

3. The testing device according to claim 1, characterized in that, The first driving end includes a first connecting segment and a first bending segment, the first connecting segment extending along the first direction, and the first bending segment protruding from the first connecting segment along the second direction; The second drive end includes a second connecting segment and a second bending segment, the second connecting segment extending along the first direction, and the second bending segment protruding from the second connecting segment along the second direction; The first and second verification columns are distributed at intervals along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

4. The testing device according to claim 3, characterized in that, The first and second bending segments bend in the same direction along the second direction, and the length of the second bending segment is less than the length of the first bending segment.

5. The testing device according to claim 4, characterized in that, Along the first direction, the length L1 of the first connecting segment satisfies: 8mm≤L1≤25mm; Along the second direction, the length L2 of the first bent segment satisfies: 6mm≤L2≤20mm; Along the first direction, the thickness L3 of the first bent segment satisfies: 3.5mm≤L3≤6mm.

6. The testing device according to claim 4, characterized in that, Along the first direction, the length L4 of the second connecting segment satisfies: 10mm≤L4≤25mm; Along the second direction, the length L5 of the second bent segment satisfies: 6mm≤L5≤20mm; Along the first direction, the thickness L6 of the second bent segment satisfies: 3.5mm≤L6≤8mm.

7. The testing device according to claim 1, characterized in that, The testing device further includes a third testing column, the axis of which is parallel to the first direction. The third testing column has a third insertion end and a third driving end that are relatively distributed along the first direction. The third insertion end is adapted to be inserted into the device to be tested, and the third driving ends all extend in a direction that intersects the first direction. Wherein, the first driving end and the second driving end extend in the same direction, and the third driving end extends in the opposite direction to the first driving end.

8. The testing device according to claim 7, characterized in that, The surfaces of the third driving end are all configured to be insulated.

9. The testing device according to claim 7, characterized in that, The third driving end includes a third connecting section and a third bending section. The third connecting section extends along the first direction, and the third bending section protrudes from the third connecting section along the second direction. The first and third verification columns are distributed at intervals along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

10. The testing device according to claim 9, characterized in that, Along the first direction, the length L7 of the third connecting segment satisfies: 10mm≤L7≤25mm; Along the second direction, the length L8 of the third bending segment satisfies: 6mm≤L8≤10mm; Along the first direction, the thickness L9 of the third bending segment satisfies: 3.5mm≤L9≤8mm.

Images