Diverter test fixture

Abstract

The utility model discloses a shunt test fixture, which comprises a base and two groups of connecting pieces arranged on the base, the connecting pieces are made of conductive materials, each group of connecting pieces is respectively provided with a first connecting end and a second connecting end which are oppositely arranged in the longitudinal direction, the first connecting end is detachably connected with a current flat cable, and the second connecting end is detachably connected with a current flat cable. The second connecting ends are detachably connected with a to-be-tested sample piece, so that the two transverse ends of the to-be-tested sample piece are erected at the two second connecting ends in a one-to-one correspondence manner. The connecting piece made of the conductive material provides stable support for the to-be-tested sample piece, prevents the to-be-tested sample piece from being pulled or twisted due to the dead weight of the current flat cable, and remarkably reduces the risk of damage to the to-be-tested sample piece; the clamping posture of the to-be-tested sample piece can be solidified, and the measurement deviation caused by inconsistent installation is effectively eliminated, so that the testing precision and repeatability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic device testing, in particular to a shunt testing fixture. Background Art

[0002] When testing existing shunt resistors, the sample to be tested is usually directly connected to the current busbar, and then a voltage sampling line is installed.

[0003] The existing test clamping method is too simple. During installation, due to the weight of the current cable, the product is easily pulled or twisted on the left and right sides, thereby damaging the sample to be tested. Secondly, it is not convenient for personnel to install and operate. Moreover, it is impossible to solidify the contact clamping posture between the current cable and the sample to be tested, which leads to deviations in repeated measurement results. Utility Model Content

[0004] The utility model aims to provide a shunt test fixture which can avoid deformation of a test sample caused by pulling of a wiring harness on the test sample, is easy to install and operate, and has a solid clamping posture.

[0005] In order to solve the above technical problems, the utility model provides a shunt test fixture, comprising:

[0006] A base, the base is made of insulating material and has a mounting surface; and

[0007] A connecting member is arranged on the mounting surface, and two groups of the connecting members are arranged at intervals in the horizontal direction. Each of the connecting members is made of a conductive material, and each group of the connecting members has a first connecting end and a second connecting end which are arranged opposite to each other in the vertical direction, wherein the first connecting end is used for detachably connecting the current busbar, and the second connecting end is used for detachably connecting the sample to be tested, so that the two ends of the sample to be tested in the horizontal direction are mounted on the two second connecting ends in a one-to-one correspondence.

[0008] In one embodiment, the shunt test fixture also includes two supports, the two supports are made of insulating material and protrude from the mounting surface, the two supports are spaced apart in the transverse direction, and the two groups of connecting members are fixedly connected to the ends of the two supports away from the mounting surface one by one.

[0009] In one embodiment, a bracket is protruding from the mounting surface, and the bracket is arranged between the two supports in the transverse direction. A temperature measuring probe is arranged at one end of the bracket away from the mounting surface.

[0010] In one embodiment, the bracket includes a first connection part, a second connection part and a third connection part which are arranged in sequence from the mounting surface to the free end away from the mounting surface, wherein the first connection part is attached to the mounting surface and has a first elongated hole extending longitudinally in the length direction, the first connection part is screwed to the mounting surface through the first elongated hole in a longitudinally position-adjustable manner, the second connection part extends from the first connection part to the free end, the third connection part is adjacent to an end of the second connection part away from the first connection part, and the first connection part is detachably connected to and fixed to the temperature measuring probe.

[0011] In one embodiment, the protrusion height of the support on the mounting surface is adjustable.

[0012] In one embodiment, each of the connecting members includes a fixing portion and an adjusting portion, the fixing portion is fixed to one end of the corresponding support away from the mounting surface, one end of the fixing portion in the longitudinal direction forms the first connecting end, the other end of the fixing portion in the longitudinal direction is connected to the adjusting portion, the adjusting portion is installed on the fixing portion so that its position can be adjusted relative to the fixing portion, and the second connecting end is formed on the adjusting portion.

[0013] In one embodiment, a second elongated hole is provided on one of the adjusting portion and the fixing portion, and a bolt is correspondingly provided on the other of the adjusting portion and the fixing portion. The angle between the length direction and the transverse direction of the second elongated hole is greater than or equal to 0 degrees and less than 85 degrees, and the bolt is adjustable in position and inserted into the second elongated hole.

[0014] In one embodiment, the second elongated hole is opened in the adjusting portion, the length direction of the adjusting portion is the same as the length direction of the second elongated hole, and the second elongated hole and the second connecting end are respectively provided at both ends of the adjusting portion in the length direction, and the adjusting portion is rotatably connected to the fixing portion through the bolt and the second elongated hole.

[0015] In one embodiment, the length direction of the second elongated hole extends in a transverse direction.

[0016] In one embodiment, the first connection end and the second connection end are respectively provided with connection holes, the current busbar is detachably screwed to the first connection end through the connection hole provided in the first connection end, and the sample to be tested is detachably screwed to the second connection end through the connection hole provided in the second connection end.

[0017] The technical solution provided by the utility model has the following advantages:

[0018] The utility model provides a shunt test fixture, including a base and a connector arranged on the base, wherein the connector is provided in two groups and is made of conductive material, and each group of connectors respectively has a first connecting end and a second connecting end arranged oppositely in the longitudinal direction, wherein the first connecting end is detachably connected to a current cable, and the second connecting end is detachably connected to a sample to be tested, so that the two ends of the sample to be tested in the transverse direction are correspondingly mounted on the two second connecting ends. The connector made of conductive material not only provides stable support for the sample to be tested, avoiding the sample to be tested from being pulled or twisted due to the deadweight of the current cable, significantly reducing the risk of damage to the sample to be tested; it can also solidify the clamping posture of the sample to be tested, effectively eliminating the measurement deviation caused by inconsistent installation, thereby improving the accuracy and repeatability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a shunt test fixture provided by the utility model;

[0021] Figure 2 for Figure 1 Top view of the middle shunt test fixture;

[0022] Figure 3 for Figure 1 Front view of the middle shunt test fixture;

[0023] Figure 4 for Figure 1 Side view of the mid-shunt test fixture.

[0024] Description of reference numerals:

[0025] 100-shunt test fixture; 10-base; 11-mounting surface; 20-connector; 21-first connecting end; 22-second connecting end; 23-fixing part; 24-adjusting part; 241-second elongated hole; 30-support; 40-bracket; 41-first connecting part; 411-first elongated hole; 42-second connecting part; 43-third connecting part; 50-temperature measuring probe; 200-sample to be tested; 300-current cable; 400-voltage connecting line. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0028] See also Figures 1 to 4 The utility model provides a shunt test fixture 100 for testing a sample 200 to be tested. The sample 200 to be tested is a shunt, and current contacts are respectively arranged at both ends in the horizontal direction, and a voltage contact is also arranged on the upper side. When the sample 200 to be tested is tested under a large current condition, a current cable 300 is usually used to conductively connect the current contacts, and a voltage connection line 400 is used to conductively connect the voltage contacts. The current cable 300 is usually composed of a plurality of cables, preferably a plurality of cables braided together, and has a large self-weight. In the traditional testing method, the current cable 300 is directly connected to the current contacts of the sample 200 to be tested, which often causes the sample 200 to be twisted and deformed, or even damaged, and the clamping posture of the current cable 300 and the sample 200 to be tested cannot be fixed, and the repeatability of the test cannot be guaranteed, which leads to deviations in the test results.

[0029] To solve the above technical problems, please refer to Figures 1 to 4 In the embodiment provided by the utility model, a base 10 and a connector 20 arranged on the base 10 are included. The base 10 is made of insulating material, and the base 10 has a mounting surface 11. Insulating material refers to a material that is non-conductive or extremely conductive under the action of a DC voltage, and its resistivity is generally greater than 1010Ω·m. Specifically, the insulating material can be plastic, ceramic, etc. The connector 20 is arranged on the mounting surface 11, and the connector 20 is provided with two groups, which are conductive materials. The conductive material refers to a material with high conductivity, such as brass or copper. In this embodiment, the connector 20 has high conductivity and is not easy to deform. Each group of connectors 20 respectively has a first connecting end 21 and a second connecting end 22 arranged oppositely in the longitudinal direction, wherein the first connecting end 21 is detachably connected to the current bus 300, and the second connecting end 22 is detachably connected to the sample 200 to be tested, so that the two ends of the sample 200 to be tested in the transverse direction are correspondingly mounted on the two second connecting ends 22.

[0030] There are many specific ways for the first connection end 21 to connect the current cable 300, and the second connection end 22 to connect the sample 200 to be tested, such as clamping, crimping, etc. Preferably, the first connection end 21 and the second connection end 22 are respectively provided with a connection hole 60, and the current cable 300 is detachably screwed to the first connection end 21 through the connection hole 60 provided in the first connection end 21, and the sample 200 to be tested is detachably screwed to the second connection end 22 through the connection hole 60 provided in the second connection end 22. The design of the connection hole 60 provides a stable connection method, reduces test problems caused by unstable connection, and improves the reliability of the test process.

[0031] In this embodiment, the connector 20 made of conductive material not only provides stable support for the test sample 200, preventing the test sample 200 from being pulled or twisted due to the weight of the current cable 300, thereby significantly reducing the risk of damage to the test sample 200; it can also solidify the clamping posture of the test sample 200, effectively eliminating the measurement deviation caused by inconsistent installation, thereby improving the accuracy and repeatability of the test.

[0032] For further information, please refer to Figures 1 to 4 The shunt test fixture 100 further includes two supports 30, which are made of insulating materials and protrude from the mounting surface 11. The two supports 30 are arranged at intervals in the horizontal direction, and the two groups of connectors 20 are fixedly connected to the ends of the two supports 30 away from the mounting surface 11 in a one-to-one correspondence. This structure enhances the stability of the overall structure and reduces the test error caused by improper installation. The supports 30 set up the connectors 20 to adapt to a specific test environment or a sample 200 to be tested.

[0033] Furthermore, a bracket 40 is protrudingly provided on the mounting surface 11, and the bracket 40 is disposed between the two supports 30 in the horizontal direction, and a temperature measuring probe 50 is disposed at one end of the bracket 40 away from the mounting surface 11. The bracket 40 is used to lift up the temperature measuring probe 50 so that the temperature measuring probe 50 can contact the sample 200 to be tested, so as to realize the temperature detection function of the sample 200 to be tested.

[0034] Specifically, the bracket 40 includes a first connection portion 41, a second connection portion 42, and a third connection portion 43 which are sequentially arranged from the mounting surface 11 to the free end away from the mounting surface 11, wherein the first connection portion 41 is attached to the mounting surface 11 and has a first elongated hole 411 extending in the longitudinal direction, the first connection portion 41 is screwed to the mounting surface 11 in an adjustable position in the longitudinal direction through the first elongated hole 411, the second connection portion 42 is extended from the first connection portion 41 to the free end, the third connection portion 43 is adjacent to an end of the second connection portion 42 away from the first connection portion 41, and the first connection portion 41 is detachably connected and fixed to the temperature measuring probe 50. In this embodiment, the first elongated hole 411 can be used to cooperate with the base 10 to realize the adjustable installation of the temperature measuring probe 50 on the base 10 in the longitudinal direction, so as to adapt to the position required for temperature measurement of the samples 200 to be tested of different specifications and models.

[0035] Furthermore, the height of the protrusion of the support 30 on the mounting surface 11 is adjustable. Specifically, the support 30 may be a telescopic adjustment structure, for example, it may include a telescopic fixed sleeve and a plug rod, so that the height of the sample 200 to be tested is adjustable relative to the base 10, thereby adapting to the height of the temperature measuring probe 50, so as to achieve accurate temperature measurement of the sample 200 to be tested.

[0036] On the basis of the above-mentioned embodiments, each of the connecting members 20 includes a fixing portion 23 and an adjusting portion 24, wherein the fixing portion 23 is fixed to one end of the corresponding support 30 away from the mounting surface 11, and the first connecting end 21 is formed at one end of the fixing portion 23 in the longitudinal direction, and the adjusting portion 24 is connected to the other end of the fixing portion 23 in the longitudinal direction, and the adjusting portion 24 is installed on the fixing portion 23 in an adjustable position relative to the fixing portion 23, and the second connecting end 22 is formed on the adjusting portion 24. In this embodiment, the adjusting portion 24 is adjustable relative to the fixing portion 23, providing more installation options. The design of the position-adjustable connecting member 20 provides greater flexibility. By changing the relative position of the adjusting portion 24 and the fixing portion 23, the shunt test fixture 100 can adapt to the test samples 200 of different sizes and shapes, thereby improving the scope of application of the shunt test fixture 100.

[0037] Further, a second elongated hole 241 is provided on one of the adjusting portion 24 and the fixing portion 23, and a bolt is correspondingly provided on the other of the adjusting portion 24 and the fixing portion 23, and the angle between the length direction and the transverse direction of the second elongated hole 241 is greater than or equal to 0 degrees and less than 85 degrees, and the bolt is adjustable in position and penetrates the second elongated hole 241. Preferably, the length direction of the second elongated hole 241 extends in the transverse direction (not shown in the figure), so that the posture of the adjusting portion 24 can be adapted to the installation and fixation of the test samples 200 of different specifications and sizes by adjusting the fixing position of the bolt in the second elongated hole 241.

[0038] Optionally, the second elongated hole 241 is formed in the adjusting portion 24, the length direction of the adjusting portion 24 is the same as the length direction of the second elongated hole 241, and the adjusting portion 24 is provided with the second elongated hole 241 and the second connecting end 22 at both ends in the length direction, and the adjusting portion 24 is rotatably connected to the fixing portion 23 through the bolt and the second elongated hole 241. In this embodiment, the adjusting portion 24 is rotatably and relatively movably installed relative to the fixing portion 23 to adapt to the installation of the test samples 200 of different specifications and sizes, and the test sample 200 can be adjusted to be directly above the temperature measuring probe 50, so as to facilitate the temperature measurement by the temperature measuring probe 50.

[0039] Obviously, the above described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. A shunt test fixture, characterized in that: include: A base, the base is made of insulating material and has a mounting surface; as well as, A connecting member is arranged on the mounting surface, and two groups of the connecting members are arranged at intervals in the horizontal direction. Each of the connecting members is made of a conductive material, and each group of the connecting members has a first connecting end and a second connecting end which are arranged opposite to each other in the vertical direction, wherein the first connecting end is used for detachably connecting the current busbar, and the second connecting end is used for detachably connecting the sample to be tested, so that the two ends of the sample to be tested in the horizontal direction are mounted on the two second connecting ends in a one-to-one correspondence.

2. The shunt test fixture as claimed in claim 1, characterized in that: The shunt test fixture also includes two supports, which are made of insulating material and protrude from the mounting surface. The two supports are spaced apart in the horizontal direction, and the two groups of connecting members are fixedly connected to the ends of the two supports away from the mounting surface in a one-to-one manner.

3. The shunt test fixture as claimed in claim 2, characterized in that: A bracket is also protrudingly provided on the installation surface. The bracket is arranged between the two supports in the transverse direction. A temperature measuring probe is arranged at one end of the bracket away from the installation surface.

4. The shunt test fixture as claimed in claim 3, characterized in that: The bracket includes a first connection part, a second connection part and a third connection part which are arranged in sequence from the mounting surface to a free end away from the mounting surface, wherein the first connection part is attached to the mounting surface and has a first elongated hole extending in the longitudinal direction, the first connection part is screwed to the mounting surface through the first elongated hole in an adjustable position in the longitudinal direction, the second connection part extends from the first connection part to the free end, the third connection part is adjacent to an end of the second connection part away from the first connection part, and the first connection part is detachably connected to and fixed to the temperature measuring probe.

5. The shunt test fixture as claimed in claim 4, characterized in that: The protruding height of the support on the mounting surface is adjustable.

6. The shunt test fixture according to any one of claims 2 to 5, characterized in that: Each of the connecting parts includes a fixing part and an adjusting part, wherein the fixing part is fixed to one end of the corresponding support away from the mounting surface, one end of the fixing part in the longitudinal direction forms the first connecting end, and the other end of the fixing part in the longitudinal direction is connected to the adjusting part, the adjusting part is installed on the fixing part so that its position can be adjusted relative to the fixing part, and the second connecting end is formed on the adjusting part.

7. The shunt test fixture as claimed in claim 6, characterized in that: A second elongated hole is provided on one of the adjusting part and the fixing part, and a bolt is correspondingly provided on the other of the adjusting part and the fixing part. The angle between the length direction and the transverse direction of the second elongated hole is greater than or equal to 0 degree and less than 85 degrees, and the bolt is adjustable in position and penetrates through the second elongated hole.

8. The shunt test fixture as claimed in claim 7, characterized in that: The second elongated hole is opened in the adjusting part, the length direction of the adjusting part is the same as the length direction of the second elongated hole, and the second elongated hole and the second connecting end are respectively provided at two ends of the adjusting part in the length direction, and the adjusting part is rotatably connected to the fixing part through the bolt and the second elongated hole.

9. The shunt test fixture as claimed in claim 7, characterized in that: The length direction of the second elongated hole extends in the transverse direction.

10. The shunt test fixture according to any one of claims 1 to 5, characterized in that: The first connection end and the second connection end are respectively provided with connection holes, the current busbar is detachably screwed to the first connection end through the connection hole provided in the first connection end, and the sample to be tested is detachably screwed to the second connection end through the connection hole provided in the second connection end.

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