Square resistance test probe

Abstract

The utility model provides a square resistance test probe, including probe seat, radial fixed plate, axial fixed plate, probe, the front end of probe seat is provided with the radial fixed plate, its inner side is fixed with the axial fixed plate, the radial fixed plate and the axial fixed plate are coaxially arranged, the number of the probe is four, the front end of each probe is inserted on the radial fixed plate, and the axial fixed plate is fixed on the axial fixed plate. The middle end of the spring is inserted into the axial fixing plate, the rear end of the spring is sleeved with a spring, one end of the spring abuts against the limiting boss on the probe, the other end of the spring abuts against the adjusting sleeve, and the adjusting sleeve is arranged at the tail end of the probe in a sleeving mode and used for adjusting the elastic force of the spring. The probe is simple in structure and convenient to disassemble and assemble, the spring is loaded on the probe, when the probe makes contact with a sample, the probe can elastically retract along with the spring, the probe can be prevented from damaging the sample, it is guaranteed that the contact force of the probe and the sample is stable and consistent, and therefore the detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a square resistance test technical field especially relates to a square resistance test probe. BACKGROUND

[0002] The battery piece is the core part of solar cell, and the performance of the battery piece will directly affect the conversion rate and other performances of the battery, therefore, the performance of the battery piece needs to be monitored in the process of manufacturing the solar cell, wherein the square resistance value of the battery piece is a parameter that needs to be tested.

[0003] At present, the square resistance test mode is mainly divided into two types: contact type and non-contact type. Among them, the non-contact eddy current measurement combines the sheet resistivity of the substrate and the resistivity of the surface layer together for measurement, which leads to unstable measurement structure. The contact type generally adopts probe to contact the sample for testing, and the contact force between the existing probe and the sample is unstable when contacting the sample, which leads to unstable detection structure and affects the detection precision. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a square resistance test probe to overcome the deficiencies in the prior art.

[0005] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a square resistance test probe, comprising a probe seat, a radial fixing plate, an axial fixing plate and a probe, the front end of the probe seat is provided with a radial fixing plate, the inner side of the radial fixing plate is fixed with an axial fixing plate, the radial fixing plate and the axial fixing plate are coaxially arranged, the probe is provided with four, each probe is inserted at the front end into the radial fixing plate, is inserted at the middle end into the axial fixing plate, and the rear end is sleeved with a spring, one end of the spring abuts against a limiting boss on the probe, the other end abuts against an adjusting sleeve, the limiting boss is located on the inner side of the axial fixing plate, the adjusting sleeve is sleeved at the end of the probe, and is used for adjusting the elastic force of the spring.

[0006] Further, the square resistance test probe, the rear side of the probe seat is further provided with a probe cover which is detachably connected with the probe seat, the inner side of the probe cover is provided with a support table which protrudes inward, the rear end of the adjusting sleeve is inserted into the support table and is in sliding connection with the support table.

[0007] Further, the square resistance test probe further comprises an adjusting block, the adjusting block is in threaded connection with the probe cover, and the inner side of the adjusting block abuts against the adjusting sleeve.

[0008] Further, the square resistance test probe, the probe cover is provided with a threaded hole, the threaded hole is coaxially arranged with the support table, the adjusting block is in threaded connection with the threaded hole, the support table is provided with a sliding hole which is arranged in one-to-one correspondence with the plurality of adjusting sleeves, and the sliding hole is in communication with the threaded hole.

[0009] Further, the square resistance test probe, the front side of the probe base is equipped with a mounting groove one, the radial fixing plate is inlaid in the mounting groove one, and the outer side of the radial fixing plate is equipped with an opening groove one, and the mounting groove one is equipped with a pin one matched with the opening groove one in the circumferential direction.

[0010] Further, the square resistance test probe, the rear side of the mounting groove one is equipped with a mounting groove two inside the probe base, the axial fixing plate is inlaid in the mounting groove two and is fixedly connected with the probe base through fasteners, and the outer side of the axial fixing plate is equipped with an opening groove two, and the mounting groove two is equipped with a pin two matched with the opening groove two in the circumferential direction.

[0011] Further, the square resistance test probe, the inside of the probe base is further equipped with a mounting groove three below the mounting groove two, and the PCB board is arranged in the mounting groove three.

[0012] Further, the square resistance test probe, the bottom surface of the probe base is equipped with a coil sleeve.

[0013] Compared with the prior art, the square resistance test probe has the advantages that the structure is simple, the disassembly and assembly are convenient, the spring is loaded on the probe, the spring is pressed when the probe contacts the sample, the probe is elastically retracted with the spring at any time, the probe can avoid damaging the sample, the contact force of the probe and the sample is stable and consistent, the test result is stable and accurate, the detection precision is improved, the spring force of the probe can be adjusted, the probe meets the square resistance test of most samples, the flexibility is good, and the use range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0015] Figure 1 Structure diagram of the square resistance test probe of the present application Figure 1 ;

[0016] Figure 2 Structure diagram of the square resistance test probe of the present application Figure 2 ;

[0017] Figure 3 A sectional view of the square resistance test probe of the present application Figure 2 ;

[0018] Figure 4 Partial structure diagram of the square resistance test probe of the present application Figure 1 ;

[0019] Figure 5 This is a partial structural diagram of the sheet resistance test probe of this utility model. Figure 2 ;

[0020] In the diagram: 1. Probe holder; 101. Mounting slot one; 102. Mounting slot two; 103. Mounting slot three; 2. Radial fixing plate; 21. Opening slot one; 3. Axial fixing plate; 31. Opening slot two; 4. Probe; 41. Limiting boss; 5. Spring; 6. Adjusting sleeve; 7. Adjusting block; 8. Pin one; 9. Pin two; 10. PCB board; 11. Collector coil sleeve; 12. Probe cover; 121. Support platform; 122. Threaded hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figures 1-5 As shown, a sheet resistance test probe includes a probe base 1, a radial fixing plate 2, an axial fixing plate 3, and probes 4. The front end of the probe base is provided with the radial fixing plate 2, and the inner side of the radial fixing plate 3 is fixed therein. The radial fixing plate 2 and the axial fixing plate 3 are arranged coaxially. There are four probes 4, with the front end of each probe 4 inserted into the radial fixing plate 2 and the middle end inserted into the axial fixing plate 3. A spring 5 is sleeved on the rear end of each probe 4. The radial fixing plate 2 and the axial fixing plate 3 position and support the probe 4. One end of the spring 5 abuts against a limiting boss 41 on the probe 4, and the other end abuts against an adjusting sleeve 6. The limiting boss 41 is located inside the axial fixing plate 3. The adjusting sleeve 6 is sleeved on the end of the probe 4 and is used to adjust the elastic force of the spring 5. When the probe 4 contacts the sample, the spring 5 is compressed by pressure, and the probe 4 retracts with the spring 5, which can avoid damage to the sample by the probe and ensure that the contact force between the probe 4 and the sample is stable and consistent.

[0024] In addition, such as Figures 2-4As shown in the above, the above-mentioned square resistance test probe further comprises an adjusting block 7, the rear side of the probe base 1 is further provided with a probe cover 12 which is detachably connected therewith, the inner side of the probe cover 12 is provided with a support table 121 which protrudes inward, a plurality of adjusting sleeves 6 are provided on the support table 121 in one-to-one correspondence, the rear end of the adjusting sleeve is inserted into the sliding hole and is in sliding connection with the support table 121; and the probe cover 12 is further provided with a threaded hole 122, the sliding hole and the threaded hole 122 are in communication, the threaded hole 122 is coaxially arranged with the support table 121, the adjusting block 7 is in threaded connection with the threaded hole of the probe cover 12, and the inner side of the adjusting block 7 is in abutment with the adjusting sleeve 6. Rotating the adjusting block 7 can drive the adjusting sleeve 6 to move axially along the sliding hole, so as to adjust the elastic force of the spring 5, ensure appropriate elastic force for different sample configurations, and expand the adjustment range of the elastic force by replacing the type of the spring 5, so as to meet the square resistance test of most samples and have good flexibility.

[0025] Embodiment 2

[0026] Based on the structure of embodiment 1, as shown in Figure 3 , 4 , the front side of the probe base 1 is provided with a mounting groove one 101, the radial fixing plate 2 is inlaid in the mounting groove one 101, and the outer side of the radial fixing plate 2 is provided with an open groove one 21, the mounting groove one 101 is circumferentially provided with a pin one 8 matched with the open groove one 21, the pin one 8 is clamped in the open groove one 21 to position the mounting direction of the radial fixing plate 2, and the assembly speed is accelerated.

[0027] As shown in Figures 3-5 , the rear side of the mounting groove one 101 is provided with a mounting groove two 102 located inside the probe base 1, the axial fixing plate 3 is inlaid in the mounting groove two 102 and is fixedly connected with the probe base 1 through fasteners, and the outer side of the axial fixing plate 3 is provided with an open groove two 31, the mounting groove two 102 is circumferentially provided with a pin two 9 matched with the open groove two 31, the pin two 9 is clamped in the open groove two 102 to position the mounting direction of the axial fixing plate 3, and the assembly speed is accelerated.

[0028] As shown in Figure 5 , the inside of the probe base 1 is further provided with a mounting groove three 103 located below the mounting groove two 102, the mounting groove three 103 is provided with a PCB board 10, which is integrated with each probe, and is convenient for connection with test equipment.

[0029] As shown in Figure 1 , 2 , the bottom surface of the probe base 1 is provided with a coil sleeve 11, which integrates the wire harness, so that the whole is more neat and beautiful.

[0030] The utility model discloses simple structure, easy to assemble and disassemble, and the spring 5 is loaded on the probe 4, when the probe contacts the sample, the spring is pressed, and the probe will be retracted with the spring elasticity, can avoid the probe damage sample, and guarantee the contact force of probe and sample stable and consistent, thereby guaranteeing test result stable, accurate, improve detection precision, and the spring force of probe loading can be adjusted, makes the probe head meet the square resistance test of most samples, and the flexibility is good, and the use range is wide.

[0031] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A sheet resistance testing probe, characterized in that: The device includes a probe base, a radial fixing plate, an axial fixing plate, and probes. The probe base has a radial fixing plate at its front end and an axial fixing plate fixed inside it. The radial fixing plate and the axial fixing plate are arranged coaxially. There are four probes. The front end of each probe is inserted into the radial fixing plate, the middle end is inserted into the axial fixing plate, and a spring is sleeved on its rear end. One end of the spring abuts against a limiting boss on the probe, and the other end abuts against an adjusting sleeve. The limiting boss is located inside the axial fixing plate. The adjusting sleeve is sleeved on the end of the probe and is used to adjust the spring force.

2. The sheet resistance test probe according to claim 1, characterized in that: The probe base is also provided with a probe cover that can be detachably connected to it. The inner side of the probe cover is provided with an inwardly protruding support platform. The rear end of the adjusting sleeve is inserted into the support platform and slidably connected to the support platform.

3. The sheet resistance testing probe according to claim 2, characterized in that: It also includes an adjustment block, which is threadedly connected to the probe cover and its inner side abuts against the adjustment sleeve.

4. The sheet resistance test probe according to claim 3, characterized in that: The probe cover is provided with a threaded hole, which is coaxially arranged with the support platform. The adjusting block is threadedly connected to the threaded hole. The support platform is provided with sliding holes that correspond one-to-one with multiple adjusting sleeves. The sliding holes are connected to the threaded hole.

5. The sheet resistance test probe according to claim 1 or 4, characterized in that: The probe holder has a mounting groove on its front side, the radial fixing plate is inlaid in the mounting groove, and the radial fixing plate has an opening groove on its outer side. The mounting groove has a pin that mates with the opening groove around its circumference.

6. The sheet resistance test probe according to claim 5, characterized in that: The mounting groove one is provided with a mounting groove two located inside the probe seat on the rear side. The axial fixing plate is embedded in the mounting groove two and is fixedly connected to the probe seat by fasteners. The outer side of the axial fixing plate is provided with an opening groove two. The mounting groove two is provided with a pin two that cooperates with the opening groove two on the circumference.

7. The sheet resistance test probe according to claim 1, characterized in that: The probe holder also has a mounting slot three located below the mounting slot two, and a PCB board is installed in the mounting slot three.

8. The sheet resistance test probe according to claim 1, characterized in that: The probe holder has a collecting coil sleeve on its bottom surface.

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