Clamp and measuring system

Abstract

The invention relates to the technical field of measuring devices, and provides a clamp and a measuring system.The clamp comprises a first insulating part, a second insulating part and a measuring assembly, the first insulating part is provided with a first abutting part and a protection cavity channel penetrating through the first abutting part, the second insulating part is hinged to the first insulating part, the second insulating part is provided with a second abutting part, and the first abutting part is hinged to the second abutting part; the first abutting part and the second abutting part face each other in the second direction, the cavity opening of the protection cavity and the second insulating part are arranged in a spaced mode in the second direction, the measuring assembly is arranged on the first insulating part and comprises a conductive part, the conductive part is movably arranged in the protection cavity in a penetrating mode, and the conductive part is switched between a detection state and a storage state. According to the invention, the problems of large measurement result fluctuation and large measurement error when the contact impedance of the switch cabinet is measured can be solved.

Description

Technical Field

[0001] This application relates to the field of measuring device technology, and more particularly to a clamp and measuring system. Background Technology

[0002] A switchgear is an electrical device. External power lines first enter the main control switch inside the cabinet, then proceed to the branch control switches, with each branch circuit configured according to its needs. Its main function is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes of a power system.

[0003] Switchgear operating at high temperatures for extended periods can accelerate the aging of insulation components and shorten the lifespan of equipment connections, potentially leading to discharge accidents. Therefore, it is necessary to periodically measure the circuit impedance degradation of the switchgear.

[0004] In related technologies, when measuring the contact impedance of switchgear, there are problems such as large fluctuations in measurement results and large measurement errors. Summary of the Invention

[0005] This application provides a fixture and a measurement system that can solve the problems of large fluctuations in measurement results and large measurement errors when measuring the contact impedance of switchgear.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a clamp, comprising:

[0008] The first insulating member has a first abutting portion and a protective cavity passing through the first abutting portion;

[0009] The second insulating member is hinged to the first insulating member. The second insulating member has a second abutting portion. Along the second direction, the first abutting portion and the second abutting portion face each other. Along the second direction, the cavity opening of the protective cavity is spaced apart from the second insulating member.

[0010] A measuring component is disposed on the first insulating member. The measuring component includes a conductive element that is movably disposed within the protective cavity.

[0011] The measuring end of the conductive element has a detection state in which it moves toward the side closer to the second insulating element and protrudes from the cavity opening, and a storage state in which it moves toward the side farther from the second insulating element and is recessed into the cavity opening. The conductive element switches between the detection state and the storage state.

[0012] In some embodiments, the clamp has a clamping state in which the first abutting part and the second abutting part are close to each other, and a releasing state in which the first abutting part and the second abutting part are far apart from each other, and the clamp is switched between the clamping state and the releasing state.

[0013] When the clamp is in the clamping state, the second abutting part abuts against the outer wall of the first insulating member, the first abutting part and the outer wall of the second insulating member are spaced apart, and the conductive member is in the detection state;

[0014] When the clamp is in the released state, the second abutment portion and the first abutment portion are spaced apart along the second direction, and the conductive component is in the stored state.

[0015] In some embodiments, two second abutment portions are provided, arranged at intervals along a third direction, and the third direction and the second direction intersect each other;

[0016] When the clamp is in the clamping state, along the third direction, the first abutment is located between the two second abutments.

[0017] In some implementations, the measurement component further includes:

[0018] A pressure sensor is disposed on a first insulating member. The pressure sensor has a mounting end and a measuring end, one of which is insulated from a conductive member.

[0019] An elastic element is disposed on the first insulating element, and one end of the elastic element is insulated from the other of the mounting end and the measuring end;

[0020] A driving element is disposed on the first insulating element and connected to the other end of the elastic element;

[0021] The driving component is used to drive the elastic component, pressure sensor and conductive component to move toward the side closer to the second insulating component, so that the measuring end of the conductive component protrudes from the cavity opening, thereby putting the conductive component in the detection state.

[0022] And / or, the driving element is used to drive the elastic element, pressure sensor and conductive element to move toward the side away from the second insulating element, so that the measuring end of the conductive element is recessed into the cavity opening, thereby putting the conductive element in a retracted state.

[0023] In some embodiments, a guide cavity is provided at the end of the first insulating member away from the first abutting portion, and the guide cavity is connected to the protective cavity.

[0024] The inner wall of the guide cavity is provided with internal threads;

[0025] The driving components include:

[0026] The adjustment knob has an external thread, which is connected to the internal thread.

[0027] A gasket is sandwiched between the adjusting knob and the elastic element, and is connected to both the adjusting knob and the elastic element respectively.

[0028] In some implementations, it also includes:

[0029] A pressure display is located on the first insulating element and is electrically connected to the pressure sensor.

[0030] In some embodiments, the first insulating member further has an opening communicating with the guiding cavity;

[0031] The measurement components also include:

[0032] The first connecting wire passes through the opening and electrically connects the pressure display and the pressure sensor;

[0033] A second connecting wire is inserted through the opening. One end of the second connecting wire is electrically connected to a conductive element, and the other end of the second connecting wire is used to electrically connect to one of the variable inductor and / or impedance analyzer.

[0034] In some embodiments, the conductive element has a connected conductive base layer and a rigid layer covering the conductive base layer.

[0035] In some embodiments, the first abutting portion has a toothed surface; the cavity opening for protecting the cavity is located on the toothed surface;

[0036] Along the second direction, the teeth on the tooth surface are positioned towards the end closest to the second contact portion.

[0037] Secondly, this application provides a measurement system, including a fixture.

[0038] This fixture, by incorporating a first and a second insulating element, achieves an insulated connection to a preset measurement position, enabling clamping of that position. The measurement component allows for conductive connection between the conductive element and the preset measurement position, allowing the conductive element to measure the resistance at the preset position when connected to an external resistance measuring device. By switching between a detection state and a retracted state, the conductive element's detection end is conductively connected to the preset measurement position when resistance measurement is needed. When resistance measurement is not required, the measuring end of the conductive element retracts into a protective cavity, protecting the conductive element and reducing interference and contamination from the external environment. This minimizes unevenness or contamination at the measuring end, reducing measurement errors. In some embodiments, during repeated measurements, the measuring end of the conductive element can extend the same length relative to the cavity opening, ensuring consistent contact area and force between the conductive element and the preset measurement position each time, facilitating repeated measurements.

[0039] Therefore, the fixture provided in the embodiments of this application can solve the problems of large fluctuations in measurement results and large measurement errors when measuring the contact impedance of switchgear. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of the main structure of the fixture provided in the embodiments of this application;

[0042] Figure 2 A schematic diagram of the connection structure between the first insulating member and the second insulating member provided for embodiments of this application;

[0043] Figure 3 This is a schematic diagram of the main structure of the measurement component provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100 - First insulating element; 101 - First abutting part; 102 - First hinge part; 103 - Protective cavity; 104 - Guiding cavity; 105 - Opening;

[0046] 200 - Second insulating element; 201 - Second abutting part; 202 - Second hinge part;

[0047] 300 - Measuring component; 301 - Conductive component; 302 - Pressure sensor; 303 - Elastic component; 304 - Driving component; 3041 - Adjusting knob; 3042 - Gasket; 305 - First connecting wire; 306 - Second connecting wire;

[0048] 400 - Pressure Indicator;

[0049] X - First direction;

[0050] Y - Second direction;

[0051] Z - Third-party orientation. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0053] It should be noted that loop impedance is a measure of the total resistance to the flow of current (especially alternating current) along a complete closed path in a circuit, and includes the sum of the loop resistance, inductive reactance, and capacitive reactance vectors.

[0054] In this context, loop resistance refers to the total resistance of conductors along a complete current path in a circuit. It is not just the resistance of a single component, but the sum of all resistances encountered by the current as it flows from the positive terminal of the power source, through the entire circuit path (including wires, switches, connection points, contact points, and the conductors themselves), and finally back to the negative terminal of the power source.

[0055] Furthermore, when measuring the loop impedance of the switchgear, fluctuations in contact impedance can lead to large fluctuations in the measurement results.

[0056] In the existing technology, the traditional impedance testing method uses metal clips to fix the test leads and then clamps the metal clips onto the switch cabinet. In actual use, it is inevitable that the contact impedance will fluctuate due to unevenness of the contact surface between the switch cabinet and the metal clip, or contamination of the metal clip, resulting in large fluctuations in measurement error.

[0057] To overcome the shortcomings of existing technologies, by setting a first insulating element and a second insulating element, an insulating connection to the preset measurement position can be achieved, thereby clamping the preset measurement position. By setting a measuring component, a conductive element in the measuring component can be electrically connected to the preset measurement position. This allows the conductive element to measure the resistance of the preset measurement position when an external resistance measuring device is connected. In this case, by switching the conductive element between a detection state and a storage state, the detection end of the conductive element can be electrically connected to the preset measurement position when resistance measurement is required. When resistance measurement at a preset measurement position is not required, the measuring end of the conductive component retracts into the protective cavity. The protective cavity protects the conductive component, thereby reducing interference and contamination from the external environment. This reduces the occurrence of unevenness or contamination at the measuring end of the conductive component, thus reducing measurement errors. In some embodiments, when performing multiple repeated measurements, the measuring end of the conductive component can extend the same length relative to the cavity opening, ensuring that the contact area and contact force between the conductive component and the preset measurement position are the same each time, facilitating repeated measurements at the preset measurement position.

[0058] Therefore, the fixture provided in the embodiments of this application can solve the problems of large fluctuations in measurement results and large measurement errors when measuring the contact impedance of switchgear.

[0059] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0060] like Figure 1 As shown, this application embodiment provides a clamp, including: a first insulating member 100, a second insulating member 200, and a measuring component 300. The first insulating member 100 has a first abutting portion 101 and a protective cavity 103 passing through the first abutting portion 101. The second insulating member 200 is hinged to the first insulating member 100 and has a second abutting portion 201. Along a second direction, the first abutting portion 101 and the second abutting portion 201 face each other. Along the second direction, the cavity of the protective cavity 103... The opening is spaced apart from the second insulating member 200. The measuring component 300 is disposed on the first insulating member 100. The measuring component 300 includes a conductive member 301, which is movably disposed in the protective cavity 103. The measuring end of the conductive member 301 has a detection state in which it moves toward the side closer to the second insulating member 200 and protrudes from the cavity opening, and a storage state in which it moves toward the side away from the second insulating member 200 and is recessed into the cavity opening. The conductive member 301 switches between the detection state and the storage state.

[0061] The following sections provide a detailed description of the specific structure of the fixture and measurement system, as well as various possible implementation methods.

[0062] It should be noted that the measuring end of the conductive component 301 is recessed into the cavity opening. The outer peripheral wall of the measuring end can be set coplanarly with the cavity opening, or the measuring end can be located inside the protective cavity. There are no restrictions here, and the selection can be made according to the actual use requirements.

[0063] It should be noted that the first insulating member 100 has a first hinge portion 102, and the first abutting portion 101 and the first hinge portion 102 are spaced apart along the first direction, and the first direction and the second direction are intersecting. The second insulating member 200 has a second hinge portion 202, and the second abutting portion 201 and the second hinge portion 202 are spaced apart along the first direction. The first hinge portion 102 and the second hinge portion 202 are hinged together.

[0064] It is understandable that by providing the first hinge portion 102 and the second hinge portion 202, the first insulating member 100 and the second insulating member 200 can be hinged together so that the first abutting portion 101 and the second abutting portion 201 cooperate to clamp the preset measurement position.

[0065] It should be noted that the fixture has a variety of different configuration shapes, and examples of the configuration shapes of the fixture will be given below.

[0066] In one embodiment, the first hinge portion 102 is located at the middle position of the first insulating member 100, and the first insulating member 100 also has a first grip portion. Along the first direction, the first grip portion is located on the side of the first hinge portion 102 away from the first abutment portion 101. Along the first direction, the second hinge portion 202 is located at the middle position of the second insulating member 200, and the second insulating member 200 also has a second grip portion. The second grip portion is located on the side of the second hinge portion 202 away from the first abutment portion 101. The first grip portion and the second grip portion cooperate to form a gripping area for the operator.

[0067] It is understood that, through the above-described embodiments, the first insulating member 100 and the second insulating member 200 can form a scissor-shaped structure.

[0068] Furthermore, when the operator controls the first gripping part and the second gripping part to rotate in a direction away from each other, the first insulating member 100 and the second insulating member 200 will rotate around the connection between the first hinge part 102 and the second hinge part 202 as the center of rotation, and drive the first abutting part 101 and the second abutting part 201 to rotate in a direction closer to each other, thereby achieving clamping of the preset measurement position.

[0069] Furthermore, when the operator controls the first gripping part and the second gripping part to rotate toward each other, the first insulating member 100 and the second insulating member 200 will rotate around the connection between the first hinge part 102 and the second hinge part 202 as the center of rotation, and drive the first abutting part 101 and the second abutting part 201 to rotate toward each other, thereby realizing the release of the clamping on the preset measurement position.

[0070] In one embodiment, the first hinge portion 102 is located at the end position of the first insulating member 100, and the second hinge portion 202 is located at the end position of the second insulating member 200.

[0071] It is understood that, through the above-described embodiments, the first insulating member 100 and the second insulating member 200 can form a hinge structure.

[0072] Furthermore, the operator presses the first insulating member 100 toward the side closer to the second insulating member 200. The first insulating member 100 can rotate around the connection between the first hinge portion 102 and the second hinge portion 202 as the rotation center, thereby allowing the first insulating member 100 to rotate toward the side closer to the second insulating member 200, thus enabling clamping of the preset measurement position.

[0073] Furthermore, the operator pulls the first insulating member 100 toward the side away from the second insulating member 200. The first insulating member 100 can rotate around the connection between the first hinge portion 102 and the second hinge portion 202 as the rotation center, thereby allowing the first insulating member 100 to rotate toward the side away from the second insulating member 200, thus releasing the clamp on the preset measurement position.

[0074] Understandably, there are no restrictions on the shape of the fixture; it can be selected according to actual usage requirements.

[0075] It should be noted that the processing material of the first insulating component 100 can be polyvinyl chloride, silicone rubber, ethylene propylene rubber, or other insulating materials. There are no restrictions here, and the material can be selected according to the actual use requirements.

[0076] It should be noted that the processing material of the second insulating component 200 can be polyvinyl chloride, silicone rubber, ethylene propylene rubber, or other insulating materials. There are no restrictions here, and the material can be selected according to the actual use requirements.

[0077] In one embodiment, the first insulating member 100 is made of polyvinyl chloride (PVC), and the second insulating member 200 is made of PVC.

[0078] Understandably, polyvinyl chloride has the advantages of high rigidity and high resistivity, which makes it easy for operators to hold the first insulating component 100 and the second insulating component 200. It also makes the clamp less prone to deformation when holding the preset measurement position, thereby improving the stability of the clamp and extending its service life.

[0079] like Figure 2 As shown, the clamp provided in the embodiment of this application has a clamping state in which the first abutting part 101 and the second abutting part 201 are close to each other, and a release state in which the first abutting part 101 and the second abutting part 201 are far apart from each other. The clamp is switched between the clamping state and the release state. When the clamp is in the clamping state, the second abutting part 201 abuts against the outer wall of the first insulating member 100. The first abutting part 101 and the outer wall of the second insulating member 200 are spaced apart, and the conductive member 301 is in the detection state. When the clamp is in the release state, the second abutting part 201 and the first abutting part 101 are spaced apart along the second direction, and the conductive member 301 is in the storage state.

[0080] It is understood that through the above-described embodiments, the clamp can be used to clamp and release the preset measurement position, and the conductive element 301 can be accommodated for safety protection. In addition, the mutual interference between the first contact part 101 and the second contact part 201 can be reduced. When the clamp is in the clamping state, the conductive element 301 is in the detection state, which can realize the clamping of the preset measurement position and the measurement of resistance. When the clamp is in the release state, the conductive element 301 is in the storage state, which can realize the release of the preset measurement position and the storage of the conductive element 301.

[0081] The embodiments of this application provide two second abutment portions 201. Along the third direction, the two second abutment portions 201 are spaced apart and are arranged to intersect the third direction and the second direction. When the clamp is in the clamping state, along the third direction, the first abutment portion 101 is located between the two second abutment portions 201.

[0082] Furthermore, the first direction, the second direction, and the third direction are set to intersect in pairs.

[0083] It is understood that, through the above-described embodiments, when the clamp is in the clamping state and the second abutment portion 201 abuts against the outer wall of the first insulating member 100, the formation of a cantilever structure between the second abutment portion 201 and the outer wall of the first insulating member 100 is reduced, thus reducing stress concentration in the second abutment portion 201 and preventing breakage of the second abutment portion 201 relative to the second insulating member 200. This extends the service life of the second abutment portion 201. Furthermore, in some embodiments, such as when measuring the resistance of a wire, the two second abutment portions 201 can assist in limiting and restricting the wire, thereby reducing the occurrence of the wire detaching from the clamp.

[0084] like Figure 3 As shown, the measurement assembly 300 provided in the embodiments of this application further includes: a pressure sensor 302, an elastic element 303, and a driving element 304. The pressure sensor 302 is disposed on the first insulating member 100 and has a mounting end and a measuring end. One of the mounting end and the measuring end is insulated from the conductive member 301. The elastic element 303 is disposed on the first insulating member 100, and one end of the elastic element 303 is insulated from the other of the mounting end and the measuring end. The driving element 304 is disposed on the first insulating member 100 and is connected to the other end of the elastic element 303. The driving member 304 is used to drive the elastic member 303, the pressure sensor 302 and the conductive member 301 to move toward the side closer to the second insulating member 200, so that the measuring end of the conductive member 301 protrudes from the cavity opening, thereby putting the conductive member 301 in a detection state; and / or, the driving member 304 is used to drive the elastic member 303, the pressure sensor 302 and the conductive member 301 to move toward the side away from the second insulating member 200, so that the measuring end of the conductive member 301 is recessed into the cavity opening, thereby putting the conductive member 301 in a retracted state.

[0085] It is understood that, through the above-described embodiments, the driving member 304 can drive the elastic member 303 to move, and in turn, drive the pressure sensor 302 and the conductive member 301 to move, so that the conductive member 301 can move towards or away from the preset measurement position. By providing the conductive member 301, when it contacts the preset measurement position, it can form an electrical connection with the preset measurement position and be electrically connected to the resistance measuring device to measure the resistance at the preset measurement position. By providing the elastic member 303, the driving force of the driving member 304 can be buffered, reducing the risk of damage to the pressure sensor 302 caused by the driving member 304 directly contacting the pressure sensor 302, thus providing safety protection for the pressure sensor 302. The elastic member 303 and the pressure sensor 302 are insulated from each other, reducing mutual interference between them. The pressure sensor 302 and the conductive member 301 are insulated from each other, reducing electrical interference between them, thereby improving the service life of the fixture.

[0086] It should be noted that the mounting end of the pressure sensor 302 is insulated from the conductive element 301, and the measuring end of the pressure sensor 302 is insulated from the elastic element 303. Alternatively, the mounting end of the pressure sensor 302 may be insulated from the elastic element 303, and the measuring end of the pressure sensor 302 may be insulated from the conductive element 301. No restriction is imposed here, and the appropriate option can be selected according to actual usage requirements.

[0087] It should be noted that either the mounting end or the measuring end is insulated from the conductive component 301. This can be achieved by either the mounting end or the measuring end being insulated from the conductive component 301 through an insulating gasket 3042, or by either the mounting end or the measuring end being insulated from the conductive component 301 through insulating adhesive. There are no restrictions on this, and the choice can be made according to actual usage requirements.

[0088] It should be noted that the other of the mounting end and measuring end is insulated from the elastic element 303. This can be achieved by the other of the mounting end and measuring end being insulated from the elastic element 303 through an insulating gasket 3042, or by the other of the mounting end and measuring end being insulated from the elastic element 303 through insulating adhesive. There are no restrictions here, and the choice can be made according to the actual usage requirements.

[0089] It should be noted that the elastic element 303 can be a spring, elastic washer, elastic coupling, or other parts that utilize the elastic deformation of materials to buffer, dampen, store energy, or transmit force. There are no restrictions here, and it can be selected according to actual usage requirements.

[0090] In one embodiment, the elastic element 303 is a spring.

[0091] Understandably, the spring design allows for an elastic buffer area between the pressure sensor 302 and the drive unit 304, reducing the risk of damage to the pressure sensor 302 caused by the drive unit 304 directly contacting the pressure sensor 302, thus providing safety protection for the pressure sensor 302.

[0092] It should be noted that the driver 304 has several different settings, and the following examples illustrate the settings of the driver 304.

[0093] In one embodiment, the drive element 304 is a cylinder.

[0094] Understandably, the cylinder can drive the elastic element 303, pressure sensor 302, and conductive element 301 to move towards the side closer to the second insulating element 200, so that the conductive element 301 can abut against the preset measurement position. The cylinder can also drive the elastic element 303, pressure sensor 302, and conductive element 301 towards the side away from the second insulating element 200, so that the conductive element 301 can be separated from the preset measurement position.

[0095] In one embodiment, the first insulating member 100 provided in the present application has a guide cavity 104 at one end away from the first abutment portion 101. The guide cavity 104 is connected to the protective cavity 103. An internal thread is provided on the inner sidewall of the guide cavity 104. The driving member 304 includes an adjusting knob 3041 and a washer 3042. The adjusting knob 3041 has an external thread, which is threadedly connected to the internal thread. The washer 3042 is sandwiched between the adjusting knob 3041 and the elastic member 303, and is connected to the adjusting knob 3041 and the elastic member 303 respectively.

[0096] It is understood that, through the above-described embodiments, the adjusting knob 3041 can be moved towards the side closer to the second insulating member 200, thereby driving the pad 3042, pressure sensor 302, and conductive member 301 to move towards the side closer to the second insulating member 200, so that the conductive member 301 can abut against the preset measurement position. Alternatively, the adjusting knob 3041 can be moved away from the second insulating member 200, thereby driving the pad 3042, pressure sensor 302, and conductive member 301 to move away from the second insulating member 200, so that the conductive member 301 can separate from the preset measurement position. By providing internal and external threads, the operator can easily control the adjusting knob 3041. By providing the pad 3042, the pressure between the adjusting knob 3041 and the elastic member 303 can be evenly distributed, preventing damage or deformation of the elastic member 303 due to pressure concentration, thereby extending the service life of the clamp.

[0097] Understandably, there are no restrictions on the specific settings of the driver 304; it can be selected according to actual usage requirements.

[0098] The fixture provided in the embodiments of this application further includes a pressure display 400, which is disposed on the first insulating member 100 and is electrically connected to the pressure sensor 302.

[0099] It is understandable that by setting the pressure display 400, the pressure value detected by the pressure sensor 302 can be displayed, so that the operator can adjust the pressure of the clamp according to the value displayed on the pressure display 400. This ensures that the pressure between the clamp and the preset measurement position can remain stable during each measurement, thereby reducing the fluctuation of the contact resistance between the clamp and the preset measurement position and improving the accuracy and repeatability of the measurement.

[0100] The first insulating member 100 provided in the embodiments of this application also has an opening 105 communicating with the guide cavity 104. The measuring assembly 300 further includes: a first connecting wire 305 and a second connecting wire 306. The first connecting wire 305 passes through the opening 105 and is conductively connected to the pressure display 400 and the pressure sensor 302. The second connecting wire 306 passes through the opening 105. One end of the second connecting wire 306 is conductively connected to the conductive member 301, and the other end of the second connecting wire 306 is used to conductively connect to one of the variable inductor and / or impedance analyzer.

[0101] It is understandable that by providing the opening 105, it is convenient to extend the first connecting wire 305 and the second connecting wire 306 to the outside of the guide cavity 104.

[0102] It should be noted that the other end of the second connecting wire 306 is used for conductive connection to the variable inductor, or for conductive connection to the impedance analyzer. There are no restrictions here, and the choice can be made according to actual usage requirements.

[0103] The conductive element 301 provided in the embodiments of this application has a connected conductive base layer and a rigid layer covering the conductive base layer.

[0104] It is understood that, through the above-described embodiments, the surface hardness of the conductive component 301 can be increased while ensuring its conductivity, thereby improving the service life of the fixture.

[0105] Furthermore, the conductive base layer is at least one of aluminum or aluminum alloy, and the hard layer is at least one of nickel plating or tin plating.

[0106] Understandably, aluminum or aluminum alloys have good conductivity and are cost-effective and lightweight when used as conductive base layers. Nickel or tin plating has the advantages of high hardness and good stability. When applied to aluminum or aluminum alloys, it can also reduce the oxidation of aluminum or aluminum alloys and reduce the formation of high-resistivity aluminum oxide films, thereby improving the service life of the fixture.

[0107] In one embodiment, the conductive base layer is made of aluminum, and the hard layer is a tin-nickel plating.

[0108] Understandably, aluminum has good electrical conductivity and the advantages of low cost and lightweight. Tin-nickel plating has the advantages of high hardness and good stability. When it is applied to aluminum, it can also reduce aluminum oxidation and reduce the formation of high-resistivity aluminum oxide film, thereby improving the service life of the fixture.

[0109] The first abutting part 101 provided in the embodiments of this application has a toothed surface, the cavity opening of the protective cavity 103 is provided on the toothed surface, and along the second direction, the teeth of the toothed surface are disposed towards the end close to the second abutting part 201.

[0110] It is understood that the above-described embodiments can increase the friction between the first contact portion 101 and the preset measurement position, thereby making the connection between the clamp and the preset measurement position more stable.

[0111] Embodiments of this application provide a measurement system including the fixture provided in any of the above embodiments.

[0112] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0113] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0114] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0115] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A clamp, characterized in that, include: A first insulating member (100) has a first abutting portion (101) and a protective cavity (103) passing through the first abutting portion (101). The second insulating member (200) is hinged to the first insulating member (100). The second insulating member (200) has a second abutting portion (201). Along the second direction, the first abutting portion (101) and the second abutting portion (201) face each other. Along the second direction, the cavity opening of the protective cavity (103) is spaced apart from the second insulating member (200). A measuring component (300) is disposed on the first insulating member (100). The measuring component (300) includes a conductive member (301) which is movably disposed in the protective cavity (103). The measuring end of the conductive element (301) has a detection state in which it moves toward the side closer to the second insulating element (200) and protrudes from the cavity opening, and a retracted state in which it moves toward the side away from the second insulating element (200) and is recessed into the cavity opening. The conductive element (301) switches between the detection state and the retracted state.

2. The clamp according to claim 1, characterized in that, The clamp has a clamping state in which the first abutting part (101) and the second abutting part (201) are close to each other, and a releasing state in which the first abutting part (101) and the second abutting part (201) are far apart from each other. The clamp is switched between the clamping state and the releasing state. When the clamp is in the clamping state, the second abutting part (201) abuts against the outer wall of the first insulating member (100), the first abutting part (101) and the outer wall of the second insulating member (200) are spaced apart, and the conductive member (301) is in the detection state; When the clamp is in the released state, the second abutment portion (201) and the first abutment portion (101) are spaced apart along the second direction, and the conductive element (301) is in the stored state.

3. The clamp according to claim 2, characterized in that, Two second abutment portions (201) are provided along a third direction, with the two second abutment portions (201) spaced apart, and the third direction and the second direction intersecting each other; When the clamp is in the clamping state, along the third direction, the first abutment (101) is located between the two second abutment (201).

4. The clamp according to any one of claims 1-3, characterized in that, The measurement component (300) also includes: A pressure sensor (302) is disposed on the first insulating member (100). The pressure sensor (302) has a mounting end and a measuring end, one of which is insulated from the conductive member (301). An elastic element (303) is disposed on the first insulating element (100), and one end of the elastic element (303) is insulated from the other of the mounting end and the measuring end; A driving member (304) is disposed on the first insulating member (100) and connected to the other end of the elastic member (303); The driving member (304) is used to drive the elastic member (303), the pressure sensor (302) and the conductive member (301) to move toward the side closer to the second insulating member (200), so that the measuring end of the conductive member (301) protrudes out of the cavity opening, thereby putting the conductive member (301) in the detection state; And / or, the drive member (304) is used to drive the elastic member (303), the pressure sensor (302) and the conductive member (301) to move toward the side away from the second insulating member (200), so that the measuring end of the conductive member (301) is recessed into the cavity opening, thereby so that the conductive member (301) is in the retracted state.

5. The clamp according to claim 4, characterized in that, The first insulating member (100) has a guide cavity (104) at one end away from the first abutment portion (101), and the guide cavity (104) is connected to the protective cavity (103); The inner wall of the guide cavity (104) is provided with an internal thread; The drive element (304) includes: An adjustment knob (3041) has an external thread that is threadedly connected to the internal thread; A gasket (3042) is sandwiched between the adjustment knob (3041) and the elastic element (303), and is connected to the adjustment knob (3041) and the elastic element (303) respectively.

6. The clamp according to claim 4, characterized in that, Also includes: A pressure display (400) is disposed on the first insulating member (100), and the pressure display (400) is electrically connected to the pressure sensor (302).

7. The clamp according to claim 5, characterized in that, The first insulating element (100) also has an opening (105) communicating with the guiding cavity (104). The measurement component (300) also includes: A first connecting wire (305) passes through the opening (105) and electrically connects the pressure display (400) and the pressure sensor (302). A second connecting wire (306) is inserted through the opening (105). One end of the second connecting wire (306) is electrically connected to the conductive element (301), and the other end of the second connecting wire (306) is used to electrically connect to one of the variable inductor and / or impedance analyzer.

8. The clamp according to any one of claims 5-7, characterized in that, The conductive element (301) has a connected conductive base layer and a rigid layer covering the conductive base layer.

9. The clamp according to any one of claims 1-3, characterized in that, The first abutting part (101) has a toothed surface; the cavity opening of the protective cavity (103) is located on the toothed surface; Along the second direction, the teeth of the tooth surface are positioned toward the end closest to the second abutment (201).

10. A measurement system, characterized in that, The clamp includes any one of claims 1-9.

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