Adapters and test fixtures

Abstract

This application relates to adapters and testing fixtures, belonging to the technical field of testing equipment. The adapter provided in this application includes an insulating shell and connecting terminals. The insulating shell has a receiving cavity, and the connecting terminals include a first electrical connection portion and a second electrical connection portion connected together. At least a portion of the connecting terminals is located within the receiving cavity, addressing the technical problem of poor safety in high-voltage live testing in related technologies.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, specifically to adapters and testing fixtures. Background Technology

[0002] In the field of power equipment operation and maintenance, high-voltage live testing technology effectively avoids power outages caused by power outages during maintenance by testing and evaluating the electrical performance, insulation condition and operating parameters of equipment while it is energized, and greatly improves the reliability and economy of power system operation. It has become an important technical means to ensure the stable operation of power equipment. For example, in the off-line testing of electric drives and power supplies, due to the involvement of multiple testing items such as electrical performance and insulation performance, the industry currently commonly adopts a testing process that distributes different testing items to multiple workstations. In this process, workpiece handling, tooling disassembly, and testing operations are mainly carried out manually.

[0003] The testing process in related technologies requires a lot of manpower, which increases production costs; and in the specific testing process, operators need to frequently come into contact with high-voltage live equipment, which poses a high safety risk. Utility Model Content

[0004] The purpose of this application is to provide adapters and testing fixtures to solve the technical problem of poor safety in high-voltage live testing in related technologies.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: According to a first aspect of this application, this application provides an adapter including an insulating housing and a connecting terminal. The insulating housing has a receiving cavity, and the connecting terminal includes a first electrical connection portion and a second electrical connection portion connected to each other. At least a portion of the connecting terminal is located within the receiving cavity.

[0006] According to the above-mentioned technical means, the insulating shell of the insulating component in this application is made of insulating material and has a sealed receiving cavity, which physically isolates at least part of the connecting terminal from the outside world, avoids operators from directly contacting live parts, and avoids electric shock accidents.

[0007] Meanwhile, the connection portion of the first electrical connection part and the connection portion of the second electrical connection part of the connection terminal are arranged in the receiving cavity. With the separation structure of the insulating shell, the connection terminal can be prevented from short-circuiting, further ensuring the safety during the test process.

[0008] In one possible implementation, the insulating housing is provided with a first wiring hole and a second wiring hole, with a portion of the first electrical connection portion housed in the first wiring hole and a portion of the second electrical connection portion housed in the second wiring hole.

[0009] According to the above technical means, the first wiring hole and the second wiring hole can strictly limit the channel for the connection terminal to contact the outside world by the insulating shell. Operators can only perform wiring operations through specific holes to avoid direct contact with other live areas of the connection terminal.

[0010] Meanwhile, the first and second wiring holes provide precise installation positioning for the connection terminals, ensuring that the first and second electrical connection parts are in the correct positions, and avoiding poor contact or short circuit problems caused by installation deviations.

[0011] In one possible implementation, the insulating housing includes a first surface and a second surface opposite each other along a first direction, with a first wiring hole disposed on the first surface and a second wiring hole disposed on the second surface.

[0012] By employing the aforementioned technical methods, the first and second wiring holes with different functions are placed on opposite surfaces, making the connection paths of the test circuits clearer and more independent. Simultaneously, this avoids potential mutual interference that might occur when multiple test circuits are connected together on the same surface, ensuring the accuracy and stability of test signal transmission and improving the reliability of test results.

[0013] In one possible implementation, the first electrical connection portion and the second electrical connection portion are arranged along a first direction.

[0014] According to the above-mentioned technical means, the first electrical connection part and the second electrical connection part are arranged along the first direction and cooperate with the layout of the first wiring hole and the second wiring hole of the insulating shell, so as to make full use of the space inside the insulating shell and arrange the connection terminals reasonably in a limited space, making the overall structure of the adapter more compact.

[0015] In one possible implementation, the peripheral surface of the end of the first electrical connection portion opposite to the second electrical connection portion is provided with threads; and / or, the second electrical connection portion includes a first connecting portion, a body portion and a second connecting portion connected in sequence, the first connecting portion being connected to the first connecting portion, and the radial dimension of the body portion being larger than the radial dimension of the second connecting portion.

[0016] Based on the above technical means, the first electrical connection part is provided with threads on its circumference, which can be used to achieve a firm connection with other equipment through matching fasteners such as nuts and threaded sleeves. Compared with ordinary plug-in connections, threaded connections can provide stronger axial tensile force and torque resistance.

[0017] Meanwhile, by utilizing the larger radial dimension of the main body to form a limiting step with the second connecting part, when the second point connecting part is assembled with other components, this step can cooperate with the corresponding structure to limit the range of movement of the second electrical connection part in the axial direction and prevent it from accidentally coming off the installation position.

[0018] In one possible implementation, the insulating shell is a plastic shell.

[0019] Based on the above-mentioned technical means, plastics have good electrical insulation properties and can effectively prevent current leakage.

[0020] In one possible implementation, the adapter in this application further includes at least one boss connected to the outer peripheral surface of the insulating housing.

[0021] Based on the above-mentioned technical means, the boss in this application can provide additional fixing points for the adapter, and the adapter can be firmly installed on the test equipment or other carrier through the connector.

[0022] In one possible implementation, the boss is provided with at least one connecting portion.

[0023] Based on the above technical means, when the adapter fails, the connection part allows maintenance personnel to quickly disassemble and replace the parts.

[0024] In one possible implementation, the boss is provided with at least one connecting hole, which forms a connecting portion, and the axial direction of the connecting hole is parallel to the extension direction of the connecting terminal.

[0025] According to the above technical means, the axial direction of the connecting hole is parallel to the extension direction of the connecting terminal, so that when the adapter is fixed through the connecting hole, the transmission direction of the external force (such as vibration and tension) is consistent with the axial direction of the connecting terminal. This avoids uneven force or tortuous deformation of the connecting terminal caused by the eccentric force, ensures the stability of the electrical connection, prevents poor electrical contact caused by mechanical stress, and reduces the risk of failure caused by structural instability during the test.

[0026] According to a second aspect of this application, a test fixture is provided, the test fixture including a testing device, a product under test, and an adapter as described in any of the above embodiments. The adapter includes at least one connection terminal, a first electrical connection portion for electrical connection with one of the testing device and the product under test, and a second electrical connection portion for electrical connection with the other of the testing device and the product under test.

[0027] Based on the aforementioned technical means, the insulating shell of the adapter itself, the specifically designed connection terminals, and the threaded structure ensure the safety and stability of the electrical connection. During high-voltage live-line testing, a stable connection avoids signal interruptions and data deviations caused by poor contact, ensuring the accuracy and reliability of test data, reducing repetitive testing due to connection failures, and lowering testing costs and time.

[0028] In this way, the present application achieves the following beneficial effects: (1) The physical isolation and protection design of the insulating shell in this application can prevent operators from directly contacting high-voltage live parts during the connection process and reduce the risk of electric shock.

[0029] (2) The compact structure and reasonable layout of wiring holes and connection terminals of the adapter in this application can effectively utilize the space of the test fixture and avoid space waste caused by messy wiring.

[0030] It should be noted that the technical effects brought about by the second aspect can be referred to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0033] Figure 1 This is one of the assembly drawings of a test fixture provided in an embodiment of this application; Figure 2 This is a second assembly drawing of a test fixture provided in an embodiment of this application; Figure 3 This is one of the structural schematic diagrams of an adapter provided in an embodiment of this application; Figure 4 This is a second schematic diagram of the structure of an adapter provided in an embodiment of this application; Figure 5 for Figure 4 Schematic diagram of the BB cross section; Figure 6 for Figure 4 Schematic diagram of AA section; Figure 7 This is the third schematic diagram of the structure of an adapter provided in an embodiment of this application; Figure 8 This is the third assembly drawing of a test fixture provided in an embodiment of this application; Figure 9 This is the fourth structural schematic diagram of an adapter provided in an embodiment of this application.

[0034] Figure label: 100 - Adapter; 101 - Connecting terminal; 1011 - First electrical connection part; 1012 - Second electrical connection part; 1012a - Body part; 102 - Insulating shell; 1021 - First wiring hole; 1022 - Second wiring hole; 1023 - Boss; 1023a - Connecting hole; 200 - Product under test; 201 - Viewing window. Detailed Implementation

[0035] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0036] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0037] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0038] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, where the range of similarity is within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0039] In some embodiments, see Figure 1 This application provides a testing fixture, which includes a testing device and a product under test 200. The testing device is used to test various parameters of the product under test 200.

[0040] For example, the test fixture in this application is used for high-voltage live testing, and the testing device is used to test the insulation performance of the product under test 200. The product under test 200 can be a finished electronic control and drive system of a vehicle, or other components; this application does not limit its scope.

[0041] In other embodiments, please refer to Figure 1 and combined Figure 2 The test fixture in this application also includes an adapter 100, which is connected between the testing device and the product under test 200 to achieve the connection between the two.

[0042] In some embodiments, see Figure 3 and combined Figure 5 The adapter 100 includes an insulating housing 102 and a connecting terminal 101. The insulating housing 102 is provided with a receiving cavity. The connecting terminal 101 includes a first electrical connection portion 1011 and a second electrical connection portion 1012 connected to each other. At least a portion of the connecting terminal 101 is located in the receiving cavity.

[0043] Correspondingly, please see Figures 3-5 The first electrical connection part 1011 is used to electrically connect to one of the detection device and the product under test 200, and the second electrical connection part 1012 is used to electrically connect to the other of the detection device and the product under test 200.

[0044] Based on this, the insulating shell 102 of the insulating component in this application is made of insulating material and has a sealed receiving cavity, which physically isolates at least part of the connecting terminal 101 from the outside world, so as to prevent operators from directly contacting the live parts and avoid electric shock accidents.

[0045] Meanwhile, the connection portion of the first electrical connection portion 1011 and the second electrical connection portion 1012 of the connection terminal 101 are arranged in the receiving cavity. Together with the partition structure of the insulating shell 102, the connection terminal 101 can be prevented from short-circuiting, further ensuring the safety during the test process.

[0046] In other embodiments, please refer to Figures 3-5 The adapter 100 includes at least one connection terminal 101.

[0047] For example, the connection terminal 101 is made of metal to facilitate electrical connection between the testing device and the product under test 200.

[0048] It is understood that there may be one, two, or three connecting terminals 101, which can be adjusted according to the specific tooling. This application does not limit this, and this application uses the adapter 100 including two connecting terminals 101 as an example for illustration.

[0049] Based on this, the adapter 100 in this application can meet the connection requirements between the testing device and the product under test 200.

[0050] In some embodiments, see Figure 5 and Figure 6 The insulating housing 102 is provided with a first wiring hole 1021 and a second wiring hole 1022. A portion of the first electrical connection part 1011 is accommodated in the first wiring hole 1021, and a portion of the second electrical connection part 1012 is accommodated in the second wiring hole 1022.

[0051] Based on this, the first wiring hole 1021 and the second wiring hole 1022 can strictly limit the channel for the connection terminal 101 to contact the outside world by the insulating shell 102. Operators can only perform wiring operations through specific holes to avoid direct contact with other live areas of the connection terminal 101.

[0052] It should be noted that the first electrical connection portion 1011 and the second electrical connection portion 1012 may be partially or completely accommodated in the corresponding wiring hole, and this application does not limit this.

[0053] Meanwhile, the first wiring hole 1021 and the second wiring hole 1022 provide precise installation positioning for the connection terminal 101, ensuring that the first electrical connection part 1011 and the second electrical connection part 1012 are in the correct position, avoiding poor contact or short circuit problems caused by installation deviation.

[0054] It is understandable that when the testing device is connected to the product under test 200, the positioning of the first wiring hole 1021 and the second wiring hole 1022 can ensure the connection requirements between the product under test 200 and the adapter 100, as well as between the testing device and the adapter 100.

[0055] Furthermore, the testing device can be pre-installed with the adapter 100, and only the adapter 100 needs to be driven to complete the docking with the product under test 200 without manual intervention.

[0056] Of course, this application does not limit the number of the first wiring hole 1021 and the second wiring hole 1022.

[0057] In other embodiments, please refer to Figure 1 and combined Figure 2 The product under test 200 in this application is also provided with a viewing window 201, which is opened on the periphery where the product under test 200 is connected to the adapter 100, so as to meet the disassembly and inspection needs of the operator.

[0058] In some embodiments, see Figure 5 and Figure 6The insulating housing 102 includes a first surface and a second surface opposite to each other along a first direction, a first wiring hole 1021 is provided on the first surface, and a second wiring hole 1022 is provided on the second surface.

[0059] Based on this, the first wiring hole 1021 and the second wiring hole 1022 with different functions are placed on opposite surfaces, making the connection path of the test circuit clearer and more independent. At the same time, it avoids the mutual interference that may occur when multiple test circuits are connected together on the same surface, ensuring the accuracy and stability of test signal transmission and improving the reliability of test results.

[0060] In some embodiments, see Figure 5 and Figure 7 The first electrical connection portion 1011 and the second electrical connection portion 1012 are arranged along the first direction.

[0061] Based on this, the first electrical connection part 1011 and the second electrical connection part 1012 are arranged along the first direction and cooperate with the layout of the first wiring hole 1021 and the second wiring hole 1022 of the insulating shell 102, so as to make full use of the space inside the insulating shell 102 and arrange the connection terminal 101 reasonably in the limited space, making the overall structure of the adapter 100 more compact.

[0062] In some embodiments, see Figure 5 , Figure 7 and Figure 8 The circumferential surface of the end of the first electrical connection 1011 that is away from the second electrical connection 1012 is provided with threads.

[0063] Based on this, the first electrical connection part 1011 is provided with threads on its circumference, which can be used to achieve a firm connection with other equipment through matching fasteners such as nuts and threaded sleeves. Compared with ordinary plug-in connections, threaded connections can provide stronger axial tensile force and torque resistance.

[0064] In some embodiments, see Figure 5 The second electrical connection portion 1012 includes a first connection portion, a body portion 1012a and a second connection portion connected in sequence. The first connection portion is connected to the first connection portion, and the radial dimension of the body portion 1012a is larger than the radial dimension of the second connection portion.

[0065] Based on this, the larger radial dimension of the main body 1012a forms a limiting step with the second connecting part. When the second point connecting part is assembled with other components, this step can cooperate with the corresponding structure to limit the range of movement of the second electrical connecting part 1012 in the axial direction and prevent it from accidentally coming off the mounting position.

[0066] For example, the body portion 1012a is an external hexagonal segment.

[0067] In some embodiments, the insulating housing 102 is a plastic housing.

[0068] In addition, plastics have good electrical insulation properties, which can effectively prevent current leakage.

[0069] Of course, the insulating shell 102 can also be made of other materials, such as ceramic.

[0070] In some embodiments, see Figure 3 The adapter 100 in this application also includes at least one boss 1023, which is connected to the outer peripheral surface of the insulating housing 102.

[0071] Based on this, the boss 1023 in this application can provide additional fixing points for the adapter 100, and the adapter 100 can be securely installed on the test equipment or other carriers through the connector.

[0072] For example, please see Figure 3 There are two bosses 1023, which are arranged opposite each other along the outer peripheral surface of the insulating shell 102.

[0073] Of course, the boss 1023 can be set at one end of the adapter 100 facing the detection device, or at the other end of the adapter 100 facing the product 200 to be tested.

[0074] In some embodiments, see Figure 3 The boss 1023 is provided with at least one connecting part.

[0075] Based on this, when the adapter 100 malfunctions, the connection part allows maintenance personnel to quickly disassemble and replace components.

[0076] In some embodiments, see Figure 3 and Figure 9 The boss 1023 is provided with at least one connecting hole 1023a, the connecting hole 1023a forms a connecting part, and the axial direction of the connecting hole 1023a is parallel to the extension direction of the connecting terminal 101.

[0077] Based on this, the axial direction of the connecting hole 1023a is parallel to the extension direction of the connecting terminal 101, so that when the adapter 100 is fixed through the connecting hole 1023a, the transmission direction of the external force (such as vibration or tension) is consistent with the axial direction of the connecting terminal 101. This avoids uneven force or tortuous deformation of the connecting terminal 101 caused by the eccentric force, ensures the stability of the electrical connection, prevents poor electrical contact caused by mechanical stress, and reduces the risk of failure caused by structural instability during the test.

[0078] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An adapter, characterized in that include: An insulating outer shell (102) is provided with a receiving cavity; A connection terminal (101) includes a first electrical connection portion (1011) and a second electrical connection portion (1012) connected to each other, and at least a portion of the connection terminal (101) is located within the receiving cavity.

2. The adapter of claim 1, wherein, The insulating housing (102) is provided with a first wiring hole (1021) and a second wiring hole (1022). A portion of the first electrical connection part (1011) is accommodated in the first wiring hole (1021); a portion of the second electrical connection part (1012) is accommodated in the second wiring hole (1022).

3. The adapter according to claim 2, characterized in that, The insulating housing (102) includes a first surface and a second surface opposite to each other along a first direction, the first wiring hole (1021) is provided on the first surface, and the second wiring hole (1022) is provided on the second surface.

4. The adapter according to claim 3, characterized in that, The first electrical connection portion (1011) and the second electrical connection portion (1012) are arranged along the first direction.

5. The adapter according to claim 2, characterized in that, The first electrical connection portion (1011) has a threaded circumferential surface on the end opposite to the second electrical connection portion (1012); and / or, the second electrical connection portion (1012) includes a first connecting portion, a body portion (1012a) and a second connecting portion connected in sequence, the first connecting portion being connected to the first connecting portion, and the radial dimension of the body portion (1012a) being greater than the radial dimension of the second connecting portion.

6. The adapter according to any one of claims 1-5, characterized in that, The insulating outer shell (102) is a plastic shell.

7. The adapter according to any one of claims 2-5, characterized in that, Also includes: At least one boss (1023) is attached to the outer peripheral surface of the insulating housing (102).

8. The adapter according to claim 7, characterized in that, The boss (1023) is provided with at least one connecting part.

9. The adapter according to claim 8, characterized in that, The boss (1023) is provided with at least one connecting hole (1023a), the connecting hole (1023a) forms the connecting part, and the axial direction of the connecting hole (1023a) is parallel to the extending direction of the connecting terminal (101).

10. A testing fixture, characterized in that, include: Testing equipment and product to be tested (200); The adapter (100) according to any one of claims 1-9, the adapter (100) includes at least one of the connection terminals (101), the first electrical connection portion (1011) is used for electrical connection with one of the detection device and the product under test (200), and the second electrical connection portion (1012) is used for electrical connection with the other of the detection device and the product under test (200).

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