An assembleable modular current probe

Abstract

The present invention relates to the technical field of current probes, and discloses an assemblable modular current probe, comprising: a module block, as a basic structure for modular assembly; an outer tube, fixedly mounted on the bottom of the module block; a needle, mounted on the inner side of the outer tube, and a vertical groove A for vertical guidance is provided on the outer side of the needle; wherein a connecting assembly is symmetrically arranged on the inner side of the outer tube, and the connecting assembly is slidably connected to the needle along the vertical groove A, and is detachably arranged with the vertical groove A; a pressing block is movably arranged on the inner side of the outer tube, and is pressed against the top of the needle by elastic force. The assemblable modular current probe can effectively solve the problem in the prior art that, during the test and use, if the needle is worn, the entire probe needs to be scrapped, and the loss cannot be reduced by replacing the needle alone.

Description

Technical Field

[0001] The invention relates to the technical field of current probes, and in particular to an assemblable modular current probe. Background Art

[0002] The probe is generally composed of four basic components: a needle head, a needle tail, a spring, and an outer tube, which are pre-pressed by riveting with precision instruments. It can prevent pressure loss to the electrical device under test while ensuring normal current conduction. The probe can also be integrated and installed on the module base according to the type of the electrical device under test to achieve rapid testing of the electrical device.

[0003] The traditional probe outer tube and needle are set together, which requires high assembly precision and is not easy to disassemble. During the test and use, if the needle is worn, the entire probe needs to be scrapped, and the loss cannot be reduced by replacing the needle alone. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above shortcomings of the prior art, the present invention provides an assemblable modular current probe, which can effectively solve the problem in the prior art that if the needle tip is worn out during testing, the entire probe needs to be scrapped and the loss cannot be reduced by replacing the needle tip alone.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an assemblable modular current probe, comprising:

[0008] Module blocks, which serve as the basic structure for modular assembly;

[0009] An outer tube, fixedly mounted on the bottom of the module block;

[0010] A needle is installed on the inner side of the outer tube, and a vertical groove A for vertical guidance is provided on the outer side of the needle;

[0011] Among them, a connecting component is symmetrically arranged on the inner side of the outer tube, and the connecting component is slidably connected to the needle along the vertical groove A and is detachably arranged on the vertical groove A; a clamping block is movably arranged on the inner side of the outer tube, which presses the top of the needle under the action of elastic force.

[0012] Furthermore, an inner tube is fixedly arranged inside the outer tube, and a connecting assembly is arranged between the outer tube and the inner tube;

[0013] The connecting assembly comprises an upper clamping rod and a lower clamping rod which are slidably arranged with the inner tube, the upper clamping rod and the lower clamping rod are arranged along the radial direction of the inner tube, one end of the upper clamping rod and the lower clamping rod are both slidably arranged inside the vertical groove A by means of a ball, and the upper clamping rod and the lower clamping rod are both slid by the elastic force received by the other end;

[0014] A vertical groove B and an arc groove for connecting the vertical groove B and the vertical groove A are also provided on the outside of the needle head. An inclined surface A is provided at the bottom of the vertical groove B for guiding the lower clamping rod to disengage from the inner side of the vertical groove B.

[0015] Furthermore, an inclined surface B is provided at the bottom of the vertical groove A to guide the upper clamping rod and the lower clamping rod to disengage from the inner side of the vertical groove A. A protrusion is fixedly provided on the outer side of the needle head parallel to the vertical groove A, and the protrusion is located on the side of the vertical groove A away from the arc groove.

[0016] Furthermore, a truncated cone is fixedly provided on the top of the needle head, and an inclined groove is provided on the outer side of the truncated cone corresponding to the vertical groove B;

[0017] The connection assembly also includes a limit block, which is symmetrically arranged at the bottom of the outer tube. The limit block cooperates with the inner side of the inclined groove, and the limit block slides under the extrusion of the truncated table.

[0018] Furthermore, a slide plate is fixedly provided on the top of the limit block, and the other end of the slide plate is connected to the end of the lower clamping rod, and is slidably reset by the elastic force exerted on the lower clamping rod.

[0019] Furthermore, the connection assembly further comprises a slide bar A fixedly connected to the end of the lower clamping rod, the other end of the slide bar A penetrates the side wall of the outer tube and is slidably connected to the outer tube, and the other end of the slide bar A is fixedly provided with a push piece;

[0020] A U-shaped plate is slidably provided on the outside of the outer tube through a fixed rod. The U-shaped plate is located outside the push piece. A power connection piece A is fixedly provided on the side of the U-shaped plate away from the outer tube, and a power connection piece B is fixedly provided on the side of the push piece close to the power connection piece A.

[0021] Furthermore, it also includes an elastic sheet, which is arranged at the bottom of the vertical groove B through a side groove to prevent the upper clamping rod from sliding downward; wherein the bottom of the upper clamping rod is fixedly arranged on the limiting plate.

[0022] Furthermore, one end of the elastic sheet is bent to form a right-angle portion, and the right-angle portion is detachably mounted on the inner side of the side groove through a pin, and the other end of the elastic sheet is bent to form an inclined portion, and the inclined portion is located on the inner side of the inclined surface A, and the top of the inclined portion is higher than the bottom of the arc groove.

[0023] Furthermore, the module block is an internal hollow structure, an air vent is provided on the outside of the module block, and a dustproof plate is provided on the outside of the air vent; the inner tube is located inside the module block, and air holes are provided on the circumference of the inner tube.

[0024] Furthermore, a slide bar B is fixedly provided on the top of the clamping block, and the slide bar B is slidably provided on the inner side of the inner tube. A longitudinal spring is provided between the top of the clamping block and the inner tube; and a guide core is fixedly provided on the inner side of the needle.

[0025] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0026] The present invention is provided with a connecting assembly to detachably connect the outer tube and the needle, so that the needle can be separately removed and replaced when worn, and the replaced needle remains stable under the action of the connecting assembly and can slide smoothly for buffering, so as to prevent pressure loss to the electrical device under test during the test, thereby reducing the loss caused by needle damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the explosion of an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the front view of the outer tube and the needle in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the outer tube of an embodiment of the present invention;

[0032] Figure 5 It is a structural schematic diagram of a connection assembly according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic structural diagram of a compression block according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of a needle according to an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the partial structure of a needle according to an embodiment of the present invention;

[0036] Fig. 9 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0037] Fig.10 for Figure 8 Schematic diagram of the enlarged structure at point B in the middle.

[0038] The numbers in the figure represent:

[0039] 1. Module block; 11. Ventilation port; 12. Dustproof plate; 13. Cover plate; 14. Baffle;

[0040] 2. Outer tube; 21. Connecting assembly; 211. Upper clamping rod; 212. Lower clamping rod; 213. Lateral spring; 214. Support plate; 215. Sliding rod A; 216. Pushing plate; 217. Sliding plate; 218. Limiting block; 219. Limiting plate; 22. Pressing block; 221. Sliding rod B; 222. Longitudinal spring; 23. U-shaped plate; 231. Fixed rod; 232. Electrical connection plate A; 233. Electrical connection plate B; 24. Inner tube; 241. Air vent;

[0041] 3. needle head; 31. vertical groove A; 32. vertical groove B; 33. arc groove; 34. inclined surface A; 35. inclined surface B; 36. raised part; 37. round table; 38. inclined groove; 39. guide core; 310. side groove; 311. pin;

[0042] 4. elastic piece; 41. right angle portion; 42. inclined portion. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The present invention will be further described below in conjunction with the embodiments.

[0045] Example: See Figure 1-Figure 10 The present invention provides a technical solution: an assemblable modular current probe, comprising:

[0046] Module block 1, serving as the basic structure for modular assembly;

[0047] The outer tube 2 is fixedly mounted on the bottom of the module block 1;

[0048] The needle 3 is installed on the inner side of the outer tube 2, and a vertical groove A31 for vertical guidance is provided on the outer side of the needle 3;

[0049] Among them, a connecting component 21 is symmetrically arranged on the inner side of the outer tube 2, and the connecting component 21 is slidably connected to the needle 3 along the vertical groove A31, and is detachably arranged with the vertical groove A31; a clamping block 22 is movably arranged on the inner side of the outer tube 2, and is pressed against the top of the needle 3 by elastic force.

[0050] An inner tube 24 is fixedly arranged inside the outer tube 2, and a connecting assembly 21 is arranged between the outer tube 2 and the inner tube 24;

[0051] The connecting assembly 21 includes an upper clamping rod 211 and a lower clamping rod 212 which are slidably arranged with the inner tube 24. The upper clamping rod 211 and the lower clamping rod 212 are arranged along the radial direction of the inner tube 24. One end of the upper clamping rod 211 and the lower clamping rod 212 are both slidably arranged on the inner side of the vertical groove A31 through a ball bearing. The upper clamping rod 211 and the lower clamping rod 212 slide by the elastic force exerted on the other end. Specifically, the upper clamping rod 211 and the lower clamping rod 212 are fixedly arranged at one end away from the needle 3 with a lateral spring 213, and the other end of the lateral spring 213 is fixed to the inner side of the outer tube 2 through a support plate 214.

[0052] A vertical groove B32 and an arc groove 33 for connecting the vertical groove B32 and the vertical groove A31 are also formed on the outside of the needle 3. An inclined surface A34 is provided at the bottom of the vertical groove B32 to guide the lower clamping rod 212 to escape from the inner side of the vertical groove B32.

[0053] An inclined surface B35 is provided at the bottom of the vertical groove A31 for guiding the upper clamping rod 211 and the lower clamping rod 212 to disengage from the inner side of the vertical groove A31. A protrusion 36 is fixedly provided on the outer side of the needle 3 parallel to the vertical groove A31. The protrusion 36 is located on the side of the vertical groove A31 away from the arc groove 33.

[0054] A truncated platform 37 is fixedly provided on the top of the needle 3, and an inclined groove 38 is provided on the outer side of the truncated platform 37 corresponding to the vertical groove B32;

[0055] The connection assembly 21 further includes a limit block 218 symmetrically disposed at the bottom of the outer tube 2 . The limit block 218 cooperates with the inner side of the inclined groove 38 , and the limit block 218 slides under the pressure of the truncated table 37 .

[0056] A slide plate 217 is fixedly provided on the top of the limiting block 218 , and the other end of the slide plate 217 is connected to the end of the lower clamping rod 212 , and is slidably reset by the elastic force exerted on the lower clamping rod 212 .

[0057] The connecting assembly 21 further includes a slide rod A215 fixedly connected to the end of the lower clamping rod 212, the other end of the slide rod A215 penetrates the side wall of the outer tube 2 and is slidably connected to the outer tube 2, and a push piece 216 is fixedly provided at the other end of the slide rod A215;

[0058] A U-shaped plate 23 is slidably provided on the outside of the outer tube 2 through a fixed rod 231. The U-shaped plate 23 is located outside the push piece 216. A power connection piece A232 is fixedly provided on the side of the U-shaped plate 23 away from the outer tube 2, and a power connection piece B233 is fixedly provided on the side of the push piece 216 close to the power connection piece A232.

[0059] It also includes an elastic sheet 4, which is arranged at the bottom of the vertical groove B32 through the side groove 310 to prevent the upper clamping rod 211 from sliding downward; wherein the bottom of the upper clamping rod 211 is fixedly arranged on the limiting plate 219.

[0060] One end of the elastic sheet 4 is bent to form a right-angle portion 41, and the right-angle portion 41 is detachably mounted on the inner side of the side groove 310 through a pin 311. The other end of the elastic sheet 4 is bent to form an inclined portion 42, which is located on the inner side of the inclined surface A34, and the top of the inclined portion 42 is higher than the bottom of the arc groove 33.

[0061] The module block 1 has an internal hollow structure, and an air vent 11 is provided on the outside of the module block 1. A dustproof plate 12 is provided on the outside of the air vent 11. Specifically, a cover plate 13 is fixedly installed on the top of the module block 1 by screws, and a baffle 14 for fixing the dustproof plate 12 is fixedly provided on the outside of the cover plate 13; the inner tube 24 is located inside the module block 1, and an air vent 241 is provided on the peripheral side of the inner tube 24.

[0062] A slide bar B221 is fixedly arranged on the top of the clamping block 22 , and the slide bar B221 is slidably arranged inside the inner tube 24 . A longitudinal spring 222 is arranged between the top of the clamping block 22 and the inner tube 24 . A guide core 39 is fixedly arranged inside the needle 3 .

[0063] Principles and advantages of assembled modular current probe:

[0064] First, the needle 3 is installed on the inner side of the outer tube 2 through the connecting component 21, and the needle 3 is integrated and installed at the bottom of the module block 1 through the outer tube 2. When testing, the module block 1 drives the needle 3 to be close to the electrical device under test and presses it, so that the electrical signal is transmitted from the end of the needle 3 to the guide core 39, and then transmitted to the clamping block 22 through the guide core 39, and finally transmitted to the test equipment through the slide bar B221 on the top of the clamping block 22; it is worth noting that when the needle 3 is tested and used after being installed separately, the needle 3 can slide on the inner side of the outer tube 2 under the action of the connecting component 21, and the needle 3 is elastically pressed by the clamping block 22, so that the needle 3 completes the test action, and the assembly gap between the needle 3 and the outer tube 2 is increased, and the air can circulate inside the module block 1 and the outer tube 2 to ensure normal heat dissipation of the needle 3.

[0065] Its advantages are that the needle 3 can be easily disassembled and installed separately under the action of the connecting component 21, and after installation, the needle 3 can maintain normal sliding under the action of the connecting component 21, and will not affect subsequent test actions, thereby reducing the loss caused by wear of the needle 3; and needles 3 of different diameters can be replaced under the action of the connecting component 21, so that the modular probe can perform testing of different test points with the same spacing as a whole, and at the same time, the assembly clearance of the needle 3 is increased, which reduces the installation requirements and also makes the air between the outer tube 2 and the needle 3 more circulated, thereby ensuring the heat dissipation effect of the needle 3.

[0066] When the connection assembly 21 in the assemblable modular current probe of the present application is connected to the needle 3, first the round table 37 on the top of the needle 3 is inserted into the bottom of the outer tube 2, and the inclined groove 38 is matched with the limit block 218 at the bottom of the outer tube 2, and then the needle 3 is pressed into the inner part of the outer tube 2. Under the pressure of the round table 37, the limit block 218 will be gradually pushed to slide to ensure that the needle 3 is smoothly inserted; when the inclined groove 38 slides to the outside of the lower clamping rod 212, the lower clamping rod 212 gradually comes into contact with the inclined groove 38, and when the lower clamping rod 212 slides along the inclined groove 38 to the inside of the vertical groove B32, the lower clamping rod 212 drives the limit block 218 away from The outer side of the needle head 3 is prevented from affecting the subsequent rotation of the needle head 3; when the lower clamping rod 212 slides to the bottom of the vertical groove B32, it will be resisted by the elastic sheet 4. At this time, increasing the insertion force can make the lower clamping rod 212 squeeze the elastic sheet 4 and move along the inclined surface A34 to the outer side of the needle head 3. At this time, the upper clamping rod 211 is located on the inner side of the vertical groove B32 and slides. When the upper clamping rod 211 cannot move downward, it is resisted by the elastic sheet 4. Since the limit plate 219 is set at the bottom of the upper clamping rod 211, it cannot pass over the elastic sheet 4. At this time, the installer can be reminded to rotate the needle head 3 to move the upper clamping rod 211 to the inner side of the arc groove 33, and finally the upper clamping rod 211 is The rod 211 enters the inner side of the vertical groove A31 along the arc groove 33. At this time, the lower clamping rod 212 located below the upper clamping rod 211 is also located on the inner side of the vertical groove A31. When the insertion force of the needle 3 is released, the needle 3 is pressed downward under the action of the clamping block 22, so that the needle 3 slides at the ends of the upper clamping rod 211 and the lower clamping rod 212 through the vertical groove A31. At this time, the upper clamping rod 211 is located at the top of the vertical groove A31, and the lower clamping rod 212 is located below the arc groove 33, preventing the upper clamping rod 211 and the lower clamping rod 212 from rotating when the needle 3 rotates, thereby ensuring the rotation of the needle 3 through the two groups of upper clamping rods 211 and lower clamping rods 212 and the clamping block 22 at the top. The stability of the needle 3; it should be noted that when the upper clamping rod 211 and the lower clamping rod 212 move from the inner side of the inclined groove 38 to the inner side of the vertical groove B32, they will be squeezed, so that the lower clamping rod 212 pushes the push piece 216 to move through the slide rod A215, and then the push piece 216 pushes the U-shaped plate 23 to move along the fixed rod 231. When the lower clamping rod 212 passes through the inclined surface A34 and is located on the outside of the needle 3, it will continue to push the U-shaped plate 23, and when the lower clamping rod 212 slides horizontally and is located on the inner side of the vertical groove A31, it will reset again. At this time, the power connection piece B233 on the outside of the push piece 216 and the power connection piece A232 on one side of the U-shaped plate 23 do not contact each other, refer to Fig. 9 As shown; further, during the test process, if the needle 3 slides too far inside the outer tube 2, causing the lower clamping rod 212 to pass through the inclined surface B35 and disengage from the inner side of the vertical groove A31, the lower clamping rod 212 will push the power connection piece B233 and the power connection piece A232 to contact each other to connect the alarm circuit, causing the external alarm to sound an alarm, thereby preventing the needle 3 from being subjected to excessive pressure and causing damage to the test device.

[0067] It is worth mentioning that the above installation method has the following advantages:

[0068] Advantage 1: by arranging two sets of upper clamping rods 211 and lower clamping rods 212 on the outside of the needle 3, the stability of the needle 3 in the horizontal and vertical directions is ensured, and the needle 3 can be in close contact with the test piece under the action of the clamping block 22.

[0069] Advantage two, during installation, by moving the upper clamping rod 211 along the vertical groove B32 and the arc groove 33 to the inner side of the vertical groove A31 for easy installation, and at the same time guiding the lower clamping rod 212 to the outer side of the needle 3 through the inclined surface A34 and then following the upper clamping rod 211 into the inner side of the vertical groove A31, the upper clamping rod 211 can be horizontally limited to prevent the needle 3 from rotating when the ends of the upper clamping rod 211 and the lower clamping rod 212 slide.

[0070] Advantage three: during the installation of the needle 3, the operator can be reminded to rotate the needle 3 by sequentially sensing the resistance of the elastic sheet 4 to the lower clamping rod 212 and the upper clamping rod 211, making the installation of the needle 3 more convenient.

[0071] Advantage four, when the upper clamping rod 211 moves along the vertical groove A31 and the vertical groove B32, the lower clamping rod 212 will push the U-shaped plate 23 to move outside the fixed rod 231. When the lower clamping rod 212 is located on the inner side of the vertical groove A31, it drives the power connection piece B233 away from the power connection piece A232. During the test, when the needle 3 is subjected to greater pressure and the lower clamping rod 212 is separated from the vertical groove A31, an alarm is issued in time, thereby improving the safety of use.

[0072] In actual application, the needle 3 is disassembled as follows: the needle 3 is pushed toward the inside of the outer tube 2 by pressure, so that the vertical groove A31 on the outside of the needle 3 moves upward. Relatively speaking, the lower clamping rod 212 and the upper clamping rod 211 will successively detach from the inside of the vertical groove A31 through the inclined surface B35. At this time, the upper clamping rod 211 and the lower clamping rod 212 are not subject to resistance in the horizontal direction. Then the needle 3 is rotated so that the outer protrusion 36 approaches the upper clamping rod 211, and finally the needle 3 is pulled out.

[0073] The advantage is that, through the setting of the inclined surface B35, it can not only guide the lower clamping rod 212 to trigger the overpressure alarm during the test, but also guide the lower clamping rod 212 and the upper clamping rod 211 to disengage from the vertical groove A31 during disassembly, thereby ensuring the smooth progress of the test and disassembly work.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assemblable modular current probe, characterized in that: include: Module block (1), serving as a basic structure for modular assembly; An outer tube (2) fixedly mounted on the bottom of the module block (1); A needle (3) is mounted on the inner side of the outer tube (2), and a vertical groove A (31) for vertical guidance is provided on the outer side of the needle (3); Wherein, a connecting assembly (21) is symmetrically arranged on the inner side of the outer tube (2), and the connecting assembly (21) is slidably connected to the needle (3) along the vertical groove A (31), and is detachably arranged on the vertical groove A (31); a pressing block (22) is movably arranged on the inner side of the outer tube (2), and is pressed against the top of the needle (3) by elastic force; The inner tube (24) is fixedly arranged on the inner side of the outer tube (2), and a connecting assembly (21) is arranged between the outer tube (2) and the inner tube (24). The connecting assembly (21) comprises an upper clamping rod (211) and a lower clamping rod (212) which are slidably arranged with the inner tube (24). The upper clamping rod (211) and the lower clamping rod (212) are arranged along the radial direction of the inner tube (24). One end of the upper clamping rod (211) and the lower clamping rod (212) are both slidably arranged on the inner side of the vertical groove A (31) through a ball bearing. The upper clamping rod (211) and the lower clamping rod (212) slide by the elastic force exerted on the other end. The outer side of the needle (3) A vertical groove B (32) and an arc groove (33) for connecting the vertical groove B (32) and the vertical groove A (31) are also provided. The bottom of the vertical groove B (32) is provided with an inclined surface A (34) for guiding the lower clamping rod (212) to disengage from the inner side of the vertical groove B (32). The bottom of the vertical groove A (31) is provided with an inclined surface B (35) for guiding the upper clamping rod (211) and the lower clamping rod (212) to disengage from the inner side of the vertical groove A (31). A protrusion (36) is fixedly provided on the outer side of the needle head (3) parallel to the vertical groove A (31). The protrusion (36) is located on the side of the vertical groove A (31) away from the arc groove (33).

2. The assemblable modular current probe according to claim 1, characterized in that: A truncated platform (37) is fixedly provided on the top of the needle head (3), and an inclined groove (38) is provided on the outer side of the truncated platform (37) corresponding to the vertical groove B (32); The connection assembly (21) further comprises a limit block (218), the limit block (218) being symmetrically arranged at the bottom of the outer tube (2), the limit block (218) cooperating with the inner side of the inclined groove (38), and the limit block (218) sliding under the pressure of the round table (37).

3. The assemblable modular current probe according to claim 2, characterized in that: A slide plate (217) is fixedly provided on the top of the limit block (218); the other end of the slide plate (217) is connected to the end of the lower clamping rod (212) and is slidably reset by the elastic force exerted on the lower clamping rod (212).

4. The assemblable modular current probe according to claim 2, characterized in that: The connecting assembly (21) further comprises a sliding rod A (215) fixedly connected to the end of the lower clamping rod (212); the other end of the sliding rod A (215) penetrates the side wall of the outer tube (2) and is slidably connected to the outer tube (2); the other end of the sliding rod A (215) is fixedly provided with a push piece (216); A U-shaped plate (23) is slidably provided on the outside of the outer tube (2) via a fixing rod (231); the U-shaped plate (23) is located outside the push plate (216); a power connection plate A (232) is fixedly provided on the side of the U-shaped plate (23) away from the outer tube (2); and a power connection plate B (233) is fixedly provided on the side of the push plate (216) close to the power connection plate A (232).

5. The assemblable modular current probe according to claim 1, characterized in that: It also comprises an elastic sheet (4), which is arranged at the bottom of the vertical slot B (32) through a side slot (310) and is used to prevent the upper clamping rod (211) from sliding downward; wherein the bottom of the upper clamping rod (211) is fixedly arranged on the limiting plate (219).

6. The assemblable modular current probe according to claim 5, characterized in that: One end of the elastic sheet (4) is bent to form a right-angle portion (41), and the right-angle portion (41) is detachably mounted on the inner side of the side groove (310) via a pin (311). The other end of the elastic sheet (4) is bent to form an inclined portion (42), and the inclined portion (42) is located on the inner side of the inclined surface A (34), and the top of the inclined portion (42) is higher than the bottom of the arc groove (33).

7. The assemblable modular current probe according to claim 1, characterized in that: The module block (1) is an internal hollow structure, an air vent (11) is provided on the outside of the module block (1), and a dustproof plate (12) is provided on the outside of the air vent (11); the inner tube (24) is located inside the module block (1), and air vents (241) are provided on the circumference of the inner tube (24).

8. The assemblable modular current probe according to claim 7, characterized in that: A slide bar B (221) is fixedly arranged on the top of the pressing block (22), and the slide bar B (221) is slidably arranged on the inner side of the inner tube (24). A longitudinal spring (222) is arranged between the top of the pressing block (22) and the inner tube (24); a guide core (39) is fixedly arranged on the inner side of the needle (3).

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