Circuit detection device
By designing a circuit testing device that includes a base, a circuit testing mechanism, and a mounting base, and utilizing sliding connections and mating terminals to achieve stable connection, the deviation problem during manual circuit testing is solved, thereby improving the efficiency and reliability of circuit testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU HUAYANGTONG ELECTROMECHANICAL CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-05
AI Technical Summary
In existing technologies, manual circuit testing is prone to errors, which can damage circuit terminals and result in low testing efficiency.
Design a circuit testing device, including a base, a circuit testing mechanism and a mounting base. The product to be tested is placed on the base through a sliding connection of the mounting base. Stable connection is achieved by using the mating terminals of the first and second testing components. Combined with a driving mechanism and a test feedback module, the functional testing of the circuit is realized.
This improves the efficiency and reliability of circuit testing, avoids damage to circuit terminals, and ensures the stability and efficiency of circuit testing.
Smart Images
Figure CN224203360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit testing technology, and in particular to a circuit testing device. Background Technology
[0002] Electronic products typically contain many circuits. During manufacturing, each circuit within the product needs to be tested to identify any circuits that are not conducting, thereby ensuring product quality.
[0003] In existing technologies, the continuity of product wiring is typically checked manually. Specifically, the input and output terminals of the circuit need to be inserted into a circuit testing device to determine whether the circuit is conductive. However, when a product has multiple circuits, manual insertion makes it difficult to ensure the overall balance of the product. Deviations can easily occur during insertion, preventing proper insertion into the circuit testing device and causing damage to the circuit terminals. Furthermore, testing a single product requires four insertion and removal operations, resulting in low circuit testing efficiency. Utility Model Content
[0004] To address the shortcomings of the prior art, this utility model provides a circuit testing device that, while ensuring stable connection between the product under test and the first and second test components, also improves the circuit testing efficiency of the product.
[0005] The technical effect to be achieved by this utility model is realized through the following technical solution:
[0006] This utility model provides a circuit testing device, comprising:
[0007] Base;
[0008] The circuit testing mechanism includes a first test component and a second test component arranged opposite to each other, the first test component being mounted on the base; and
[0009] The mounting base is slidably connected to the base and located between the first test component and the second test component. The mounting base is provided with a mounting station for placing the product to be tested.
[0010] The first test component includes a first mating terminal, and the second test component includes a second mating terminal. When the mounting base is close to the first test component, the mounting station is close to the first mating terminal so that the product under test can be inserted into the first mating terminal. When the second test component is close to the mounting station, the second mating terminal can be inserted into the product under test to achieve functional testing.
[0011] In some implementations, the first docking terminal includes a plurality of first plug interfaces, which are oriented toward the mounting base and arranged parallel to the mounting station.
[0012] In this implementation, multiple first insertion interfaces are set parallel to the installation station, so that the third mating terminal of the product to be tested is parallel to the first insertion interface, thereby enabling the third mating terminal to be smoothly inserted into the first insertion interface and avoiding the problem of damage to the third mating terminal caused by deviation during insertion.
[0013] In some implementations, the second docking terminal includes a plurality of second plug interfaces, which are oriented toward the mounting base and arranged parallel to the mounting station.
[0014] In some implementations, the first test component further includes a test feedback module, which is electrically connected to the first docking terminal.
[0015] In this implementation, when the product under test is plugged into the first test component and the second test component, the external power supply is turned on. If the first test component, the product under test, and the second test component are electrically connected, the test feedback module will report that the circuit is conducting.
[0016] In some implementations, a drive mechanism is also included, which is driven to connect to the mounting base to move the mounting base closer to or further away from the first test component.
[0017] In this implementation, the drive mechanism drives the mounting base closer to the first test component so that the product under test can be inserted into the first mating terminal. After the test is completed, the drive mechanism drives the mounting base away from the first test component to facilitate the replacement of the product under test on the mounting base.
[0018] In some implementations, the second test component further includes a pressure plate with a limiting hole. The second insertion interface passes through the limiting hole, and when the second insertion interface is inserted into the product under test, the pressure plate abuts against the product under test.
[0019] In some implementations, the second test component further includes a fixing plate, which is arranged parallel to the pressure plate and has a fixing hole corresponding to the limiting hole. The second insertion interface passes through both the fixing hole and the limiting hole.
[0020] In some implementations, the mounting base includes a mounting plate, a first positioning block, and a second positioning block. The mounting plate is slidably connected to the base. The first positioning block and the second positioning block are respectively disposed on the mounting plate. The installation station is located between the first positioning block and the second positioning block.
[0021] In some implementations, the mounting base further includes a first stop and a second stop, the first stop and the second stop being respectively disposed on the mounting plate and perpendicular to the first positioning block and / or the second positioning block, and the installation station being located between the first stop, the second stop, the first positioning block and the second positioning block.
[0022] In some implementations, the product under test has a third mating terminal on the side near the first test component, and the first stop is disposed on the upper surface of the mounting plate near the first test component, and the first stop has a clearance groove for avoiding the third mating terminal.
[0023] In summary, this utility model has at least the following advantages:
[0024] The circuit testing device provided by this utility model has a mounting base slidably connected to a base and located between a first test component and a second test component. The mounting base is provided with a mounting station for placing the product to be tested. The first test component includes a first mating terminal, and the second test component includes a second mating terminal. The mounting station is close to the first test component so that the product to be tested can be inserted into the first mating terminal, and the second test component is close to the mounting station so that the second mating terminal can be inserted into the product to be tested. This enables electrical connection between the first test component, the product to be tested, and the second test component, thereby realizing the functional testing of the circuit. While ensuring that the product to be tested can be stably inserted into the first test component and the second test component respectively, it also improves the circuit testing efficiency of the product. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the circuit detection device in Example 1;
[0026] Figure 2 for Figure 1 The diagram shows the structure of the first connector.
[0027] Figure 3 This is a schematic diagram of the drive mechanism in Example 1;
[0028] Figure 4 This is a schematic diagram of the circuit detection device in Example 2;
[0029] Figure 5 This is a schematic diagram of the circuit detection device in Example 3.
[0030] Marked in the image:
[0031] 10. Base;
[0032] 20. Circuit testing mechanism; 21. First testing component; 211. First mating terminal; 212. First insertion interface; 213. Test feedback module; 22. Second testing component; 221. Second mating terminal; 222. Second insertion interface; 223. Pressure plate; 2231. Limiting hole; 224. Fixing plate; 2241. Fixing hole;
[0033] 30. Mounting base; 31. Installation station; 32. Mounting plate; 33. First positioning block; 34. Second positioning block; 35. First stop block; 351. Clearance groove; 36. Second stop block;
[0034] 40. Drive mechanism;
[0035] 50. Sliding mechanism; 51. Slide rail; 52. Slider;
[0036] 60. Product to be tested; 61. Third mating terminal; 62. Fourth mating terminal. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.
[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0039] Example 1:
[0040] Please see the appendix Figure 1 ~Appendix Figure 3 The circuit testing device of this utility model includes a base 10, a circuit testing mechanism 20 and a mounting base 30.
[0041] Please see below. Figure 1 , Figure 1The diagram illustrates the structural relationship between the base 10, the circuit testing mechanism 20, the mounting base 30, and the product under test 60 in this embodiment of the present invention. Specifically, the circuit testing mechanism 20 includes a first testing component 21 and a second testing component 22 disposed opposite to each other. The first testing component 21 is mounted on the base 10. The mounting base 30 is slidably connected to the base 10 and located between the first testing component 21 and the second testing component 22. The mounting base 30 is provided with a mounting station 31 for placing the product under test 60. The first testing component 21 includes a first mating terminal 211, and the second testing component 22 includes a second mating terminal 221. When the mounting base 30 is close to the first testing component 21, the mounting station 31 is close to the first mating terminal 211, so that the product under test 60 can be inserted into the first mating terminal 211. The second testing component 22 is close to the mounting station 31, so that the second mating terminal 221 can be inserted into the product under test 60 to achieve functional testing.
[0042] In this embodiment, the product to be tested 60 is placed on the mounting base 30, which can slide relative to the base 10, thereby moving closer to or further away from the first test component 21. The product to be tested 60 has a third mating terminal 61 and a fourth mating terminal 62 on opposite sides along the sliding direction of the mounting base 30. Specifically, the side of the product to be tested 60 closer to the first test component 21 has the third mating terminal 61, and the side closer to the second test component 22 has the fourth mating terminal 62.
[0043] During circuit testing, the mounting base 30 slides along the base 10, bringing the product under test 60 closer to the first test component 21. When the mounting station 31 approaches the first mating terminal 211, the third mating terminal 61 of the product under test 60 located on the mounting station 31 is inserted into the first mating terminal 211, so that the product under test 60 is connected to the first test component 21. Then, the second test component 22 is moved so that the second test component 22 approaches the mounting base 30. When the second mating terminal 221 approaches the mounting station 31, the second mating terminal 221 is inserted into the fourth mating terminal 62 of the product under test 60 located on the mounting station 31, so that the product under test 60 is connected to the second test component 22. Finally, the external power supply is turned on to make the second test component 22, the product under test 60 and the first test component 21 electrically connected. In this way, it can be determined whether the circuit in the product under test 60 is conductive.
[0044] It is understandable that by placing the product under test 60 on the mounting station 31 of the mounting plate 32, and then connecting the two opposite ends of the product under test 60 to the first test component 21 and the second test component 22 respectively, the circuit function test can be achieved. No matter how many circuits are inside the product under test 60, as long as the terminals at both ends of the circuit are electrically connected to the first test component 21 and the second test component 22 respectively, the function test of multiple circuits can be completed at one time, thereby improving the test efficiency and avoiding the problem of easily damaging the circuit terminals when manually connecting them.
[0045] The aforementioned circuit testing device has a mounting base 30 slidably connected to the base 10 and located between the first test component 21 and the second test component 22. The mounting base 30 is provided with a mounting station 31 for placing the product under test 60. The first test component 21 includes a first mating terminal 211, and the second test component 22 includes a second mating terminal 221. The mounting station 31 is close to the first test component 21 so that the product under test 60 can be inserted into the first mating terminal 211, and the second test component 22 is close to the mounting station 31 so that the second mating terminal 221 can be inserted into the product under test 60. This enables electrical connection between the first test component 21, the product under test 60, and the second test component 22, thereby realizing the functional testing of the circuit. While ensuring that the product under test 60 is stably inserted into the first test component 21 and the second test component 22 respectively, the circuit testing efficiency of the product is also improved.
[0046] In some preferred embodiments, please refer to Figure 2 , Figure 2 The diagram illustrates the structural relationship between the first connector 212 and the mounting station 31 in this embodiment of the invention. Specifically, the first mating terminal 211 includes multiple first connectors 212, which face the mounting base 30 and are arranged parallel to the mounting station 31. The multiple first connectors 212 are arranged parallel to the mounting station 31, ensuring that the third mating terminal 61 of the product under test 60 is parallel to the first connectors 212. This allows the third mating terminal 61 to be smoothly inserted into the first connectors 212, avoiding damage to the third mating terminal 61 caused by misalignment during insertion. It can be understood that when the product under test 60 has multiple circuits, i.e., multiple third mating terminals 61, each third mating terminal 61 corresponds one-to-one with multiple first connectors 212, thereby ensuring the reliability of circuit testing.
[0047] In some preferred embodiments, the second mating terminal 221 includes a plurality of second insertion interfaces 222, which are arranged facing the mounting base 30 and parallel to the mounting station 31. The parallel arrangement of the plurality of second insertion interfaces 222 to the mounting station 31 ensures that the fourth mating terminal 62 of the product under test 60 is parallel to the second insertion interfaces 222, thereby allowing the fourth mating terminal 62 to be smoothly inserted into the second insertion interfaces 222, avoiding damage to the fourth mating terminal 62 due to misalignment during insertion. It can be understood that when the product under test 60 has multiple circuits, i.e., multiple fourth mating terminals 62, each fourth mating terminal 62 corresponds one-to-one with the multiple second insertion interfaces 222, thus ensuring the reliability of circuit testing.
[0048] In some preferred embodiments, please continue to refer to Figure 2 , Figure 2 The diagram illustrates the structural relationship between the test feedback module 213 and the first docking terminal 211 in this embodiment of the invention. Specifically, the first test component 21 further includes a test feedback module 213, which is electrically connected to the first docking terminal 211. When the product under test 60 is plugged into the first test component 21 and the second test component 22, an external power supply is activated. If the first test component 21, the product under test 60, and the second test component 22 are electrically connected, the test feedback module 213 will report that the circuit is conducting. Preferably, the test feedback module 213 can be a light source, a sound source, or a vibration indicator.
[0049] It should be noted that the second docking terminal 221 is electrically connected to an external power source. The product under test 60 is plugged into the first docking terminal 211, and the second docking terminal 221 is plugged into the product under test 60. Since the test feedback module 213 is electrically connected to the first docking terminal 211, the test feedback module 213 will provide feedback when the power is on, thereby determining whether the circuit is conducting. If the test feedback module 213 is not powered when plugged in, then the circuit is faulty.
[0050] Furthermore, there are multiple test feedback modules 213, and each module is electrically connected to a corresponding first plug-in interface 212, thereby accurately providing feedback on whether each circuit in the product is conductive.
[0051] In some more preferred embodiments, please refer to Figure 3 , Figure 3The diagram illustrates the structural relationship between the drive mechanism 40 and the mounting base 30 in this embodiment of the invention. Specifically, the circuit testing device further includes a drive mechanism 40, which is driven and connected to the mounting base 30 to move the mounting base 30 closer to or further away from the first test component 21. The drive mechanism 40 drives the mounting base 30 closer to the first test component 21 so that the product under test 60 can be inserted into the first mating terminal 211. After the test is completed, the drive mechanism 40 drives the mounting base 30 away from the first test component 21 to facilitate the replacement of the product under test 60 on the mounting base 30. Preferably, the drive mechanism 40 can be a cylinder, which keeps the position of the mounting base 30 fixed when replacing the product under test 60 on the mounting base 30.
[0052] Furthermore, the circuit testing device also includes a sliding mechanism 50, which includes a slide rail 51 and a slider 52. The slide rail 51 is disposed on the base 10, and the slider 52 is disposed on the side of the mounting base 30 near the base 10. The slider 52 is slidably connected to the slide rail 51 so that the mounting base 30 can be smoothly slidably connected to the base 10, thereby ensuring the stability of the product 60 to be tested.
[0053] Example 2:
[0054] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the circuit detection device of this utility model. Please refer to the appendix. Figure 4 .
[0055] The second test component 22 also includes a pressure plate 223. The pressure plate 223 has a limiting hole 2231. The second insertion interface 222 passes through the limiting hole 2231. When the second insertion interface 222 is inserted into the product 60 to be tested, the pressure plate 223 abuts against the product 60 to be tested.
[0056] In this embodiment, when the second connector 222 is plugged into the product under test 60, the pressure plate 223 abuts against the product under test 60, thereby ensuring that the second connector 222 and the product under test 60 are stably plugged in, and improving the reliability of circuit testing.
[0057] Furthermore, there are multiple limiting holes 2231, which are spaced apart on the pressure plate 223 and are set in correspondence with the fourth mating terminal 62 of the product under test 60. Multiple second plug-in interfaces 222 are inserted one by one into the multiple limiting holes 2231, which not only fixes the multiple second plug-in interfaces 222, but also makes the overall structure more compact.
[0058] In some preferred embodiments, the second test assembly 22 further includes a fixing plate 224, which is arranged parallel to the pressure plate 223 and has a fixing hole 2241 corresponding to the limiting hole 2231. The second insertion interface 222 passes through both the fixing hole 2241 and the limiting hole 2231. The fixing plate 224 is parallel to the pressure plate 223, thereby ensuring that the second insertion interface 222 is parallel to the fourth mating terminal 62 of the product under test 60, thus enabling the second insertion interface 222 and the fourth mating terminal 62 to be inserted in parallel, avoiding the problem of deviation during insertion that could damage the second insertion interface 222 and / or the fourth mating terminal 62.
[0059] Example 3:
[0060] The difference between this embodiment and Embodiment 2 is that this embodiment further optimizes the structure of the circuit detection device of this utility model. Please refer to the appendix. Figure 5 .
[0061] The mounting base 30 includes a mounting plate 32, a first positioning block 33, and a second positioning block 34. The mounting plate 32 is slidably connected to the base 10. The first positioning block 33 and the second positioning block 34 are respectively disposed on the mounting plate 32. The installation station 31 is located between the first positioning block 33 and the second positioning block 34.
[0062] In this embodiment, the first positioning block 33 and the second positioning block 34 restrict the placement position of the product under test 60, thereby ensuring that the product under test 60 does not shift during the insertion process. Specifically, the first positioning block 33 and the second positioning block 34 are respectively extended along the sliding direction of the mounting plate 32, so that the product under test 60 always remains aligned with the first test component 21 and the second test component 22, facilitating insertion with the first mating terminal 211 and the second mating terminal 221.
[0063] In some preferred embodiments, the mounting base 30 further includes a first stop 35 and a second stop 36, which are respectively disposed on the mounting plate 32 and perpendicular to the first positioning block 33 and / or the second positioning block 34. The mounting station 31 is located between the first stop 35, the second stop 36, the first positioning block 33, and the second positioning block 34. The first stop 35 and the second stop 36 are disposed on the mounting plate 32 perpendicular to the first positioning block 33 and / or the second positioning block 34, which restricts the product under test 60 within the mounting station 31, avoiding the problem of the product under test 60 sliding on the mounting plate 32 in a direction away from the first mating terminal 211 or the second mating terminal 221 during insertion, thus ensuring the stability of the product under test 60.
[0064] In some more preferred embodiments, the product under test 60 has a third mating terminal 61 on the side near the first test component 21, and a first stop 35 is disposed on the upper surface of the mounting plate 32 near the first test component 21. The first stop 35 has a recess 351 for avoiding the third mating terminal 61. The first stop 35 not only fixes the product under test 60 but also avoids interference with the third mating terminal 61. The third mating terminal 61 is inserted into the first insertion interface 212 through the recess 351, improving the overall structural compactness.
[0065] The circuit testing device of this utility model has a mounting base 30 slidably connected to the base 10 and located between the first test component 21 and the second test component 22. The mounting base 30 is provided with a mounting station 31 for placing the product under test 60. The first test component 21 includes a first mating terminal 211, and the second test component 22 includes a second mating terminal 221. The mounting station 31 is close to the first test component 21 so that the product under test 60 can be inserted into the first mating terminal 211, and the second test component 22 is close to the mounting station 31 so that the second mating terminal 221 can be inserted into the product under test 60. This enables electrical connection between the first test component 21, the product under test 60, and the second test component 22, realizing the functional testing of the circuit. While ensuring that the product under test 60 is stably inserted into the first test component 21 and the second test component 22 respectively, the circuit testing efficiency of the product is also improved.
[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0067] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0068] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0069] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0070] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.
Claims
1. A circuit testing device, characterized in that, include: Base (10); The circuit testing mechanism (20) includes a first test component (21) and a second test component (22) arranged opposite to each other, wherein the first test component (21) is mounted on the base (10); and Mounting base (30) is slidably connected to the base (10) and located between the first test component (21) and the second test component (22). The mounting base (30) is provided with a mounting station (31) for placing the product to be tested (60). The first test component (21) includes a first mating terminal (211), and the second test component (22) includes a second mating terminal (221). When the mounting base (30) is close to the first test component (21), the mounting station (31) is close to the first mating terminal (211) so that the product under test (60) can be plugged into the first mating terminal (211). The second test component (22) is close to the mounting station (31) so that the second mating terminal (221) can be plugged into the product under test (60) to achieve functional testing.
2. The circuit testing device according to claim 1, characterized in that, The first docking terminal (211) includes a plurality of first plug interfaces (212), which are arranged facing the mounting base (30) and parallel to the mounting station (31).
3. The circuit testing device according to claim 2, characterized in that, The second docking terminal (221) includes a plurality of second plug interfaces (222), which are arranged facing the mounting base (30) and parallel to the mounting station (31).
4. The circuit detection device according to claim 1, characterized in that, The first test component (21) further includes a test feedback module (213), which is electrically connected to the first docking terminal (211).
5. The circuit testing device according to claim 1, characterized in that, It also includes a drive mechanism (40) that is driven to connect to the mounting base (30) to bring the mounting base (30) closer to or further away from the first test component (21).
6. The circuit testing device according to claim 3, characterized in that, The second test component (22) also includes a pressure plate (223), which has a limiting hole (2231). The second insertion interface (222) passes through the limiting hole (2231). When the second insertion interface (222) is inserted into the product to be tested (60), the pressure plate (223) abuts against the product to be tested (60).
7. The circuit testing device according to claim 6, characterized in that, The second test component (22) also includes a fixing plate (224), which is arranged parallel to the pressure plate (223) and has a fixing hole (2241) corresponding to the limiting hole (2231). The second insertion interface (222) passes through both the fixing hole (2241) and the limiting hole (2231).
8. The circuit detection device according to claim 1, characterized in that, The mounting base (30) includes a mounting plate (32), a first positioning block (33) and a second positioning block (34). The mounting plate (32) is slidably connected to the base (10). The first positioning block (33) and the second positioning block (34) are respectively disposed on the mounting plate (32). The installation station (31) is located between the first positioning block (33) and the second positioning block (34).
9. The circuit testing device according to claim 8, characterized in that, The mounting base (30) further includes a first stop (35) and a second stop (36), the first stop (35) and the second stop (36) are respectively disposed on the mounting plate (32) and perpendicular to the first positioning block (33) and / or the second positioning block (34), and the installation station (31) is located between the first stop (35), the second stop (36), the first positioning block (33) and the second positioning block (34).
10. The circuit testing device according to claim 9, characterized in that, The product under test (60) has a third mating terminal (61) on the side near the first test component (21). The first stop (35) is disposed on the upper surface of the mounting plate (32) near the first test component (21). The first stop (35) has a clearance groove (351) for avoiding the third mating terminal (61).