A current probe with a mechanically locked, secure connection structure

Abstract

The present invention relates to the technical field of current probe equipment, and discloses a current probe equipped with a mechanically locked and firmly connected structure, comprising a socket, a plug-in sleeve fixedly connected to the bottom of the socket, a spiral groove provided on the inner wall of the plug-in sleeve, and an annular groove provided on the inner wall of the plug-in sleeve near the side of the external plug; a probe body, the probe body comprising a probe body, a plug-in post detachably mounted on the top of the probe body, a ridge provided on the outer circumference of the plug-in post that fits the inner wall of the spiral groove, and a limiter provided in an installation cavity provided inside the plug-in post that can be used to lock the probe body. The current probe equipped with a mechanically locked and firmly connected structure can effectively solve the problem in the prior art that the plug-in interface will become loose when frequently used or in complex environments such as vibration and impact, resulting in poor contact, and thus causing deviations in measurement data or even interruption of measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of current probe equipment, and in particular to a current probe equipped with a mechanical locking and stable connection structure. Background Art

[0002] In the field of electronic testing and measurement, current probes are extremely critical tools, widely used in power system testing, electronic equipment development, fault diagnosis, and many other aspects. With the rapid development of modern technology, the performance of electronic equipment has been continuously improved, and the requirements for the accuracy, stability, and reliability of current measurement have become increasingly higher.

[0003] Traditional current probes typically use simple plug-in connectors or basic threaded connections to connect to test equipment or the circuit being measured. However, these connectors can become loose with frequent use or in environments subject to vibration, shock, and other harsh conditions. This can lead to poor contact, distorted measurement data, or even interrupted measurements. This unstable connection not only affects the continuity of current probe testing but can also cause signal interference due to momentary connection anomalies, seriously compromising the accuracy of test results. Summary of the Invention

[0004] Technical problems solved

[0005] To address the aforementioned shortcomings of the prior art, the present invention provides a current probe with a mechanically locked, secure connection structure. This effectively addresses the problem of loose connections in existing plug-in connectors that can occur during frequent use or in complex environments such as vibration and impact, leading to poor contact and, in turn, measurement data deviations or even interrupted measurements. This unstable connection not only affects the continuity of the current probe test but can also cause signal interference due to momentary connection anomalies, seriously compromising the accuracy of test results.

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

[0007] The present invention provides a current probe with a mechanical locking and stable connection structure, comprising:

[0008] A socket, wherein a quick-release member is provided on the top of the socket, and the socket is connected to an external plug via the quick-release member. A plug sleeve is fixedly connected to the bottom of the socket, and a spiral groove is provided on the inner wall of the plug sleeve. A ring groove is provided on the inner wall of the plug sleeve near the external plug;

[0009] The probe body comprises a probe body, a plug-in column is detachably mounted on the top of the probe body, and the outer surface of the plug-in column is provided with a ridge that fits with the inner wall of the spiral groove, and an installation cavity is provided inside the plug-in column, and a limiter is provided in the installation cavity that can be used to lock the probe body;

[0010] Among them, the limiting part includes a limiting block, which is slidably connected in the installation cavity. The limiting block is slidably connected to a locking block through a cavity set inside it. When the limiting block moves into the annular groove, the primary limiting action is triggered, and when the locking block moves into the annular groove, the secondary limiting action is triggered.

[0011] Furthermore, the quick-release part includes a mounting seat, which is fixedly connected to the top of the socket. A through hole is provided on the inner wall of the mounting seat, and a limiting ball is provided in the through hole. The socket is slidably connected to a fixing sleeve that fits the outer surface of the mounting seat through an axis rod provided at the top thereof, and a notch is provided on the upper part of the inner wall of the fixing sleeve.

[0012] Furthermore, a groove is formed on the outer circumferential surface of the external plug to fit the surface of the limiting ball, and the groove is tapered.

[0013] Furthermore, adjacent surfaces of a pair of the limit blocks are designed with inclined surfaces, and the installation cavity is connected to an abutment plate that fits the inclined surfaces of the limit blocks via a return spring arranged at the bottom thereof.

[0014] Furthermore, a slot is provided at the top of the plug-in column, and the slot is communicated with the installation cavity. A guide rod is fixedly connected to the top of the inner wall of the plug-in sleeve, and a counterweight block that fits the inner wall of the slot is slidably connected to the outer surface of the guide rod. In the locked state, the bottom end of the counterweight block fits with the top of the abutment plate.

[0015] Furthermore, the locking block is provided with an inclined surface on the side close to the abutment plate, and the locking block is connected to the inner wall of the cavity through a compression spring provided on the inclined surface, and a roller is rotatably installed on the inclined surface, and a plurality of rollers are provided and distributed in an array along the inclined surface, and the locking block is provided with an arc surface on the side away from the abutment plate, and a clamping block is fixedly connected to the arc surface, and a plurality of clamping blocks are provided and distributed in an array along the arc surface, and a clamping groove that fits the clamping block is opened in the annular groove.

[0016] Furthermore, a guide plate is fixedly connected in the cavity, and a counterweight plate is slidably connected to the surface of the guide plate. In a locked state, the bottom end of the counterweight plate fits with the lower portion of the inclined surface of the locking block.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention is provided with a limit piece. When the probe position of the probe body is placed downward, the counterweight block and the counterweight plate will contact the abutment plate and the locking block respectively under the cooperation of their own gravity. When the counterweight block contacts the abutment plate, the abutment plate will drive the limit block to move until the limit block extends out of the installation cavity and fits against the inner wall of the annular groove, so that the limit block can achieve primary locking. When the counterweight plate contacts the locking block, the locking block will move a short distance along the limit block cavity until the locking block moves into the annular groove, and the card block and the card slot will engage with each other, thereby achieving secondary locking, which can prevent the probe body from loosening during use and can ensure that the probe body and the socket maintain a stable connection during long-term use, which is beneficial to the continuity of the current probe test work and ensures the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the plug sleeve, the socket and the probe body according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the three-dimensional separation of the probe body according to an embodiment of the present invention;

[0023] Figure 4 This is a structural diagram of the transformation of the probe body installation and use status according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic structural diagram of a planar cross-section of a quick-release portion according to an embodiment of the present invention;

[0025] Figure 6 For the embodiment of the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0026] Figure 7 This is a schematic diagram of a planar cross-sectional structure of a plug sleeve according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of a planar cross-sectional structure of a plug-in column according to an embodiment of the present invention;

[0028] Figure 9 For the embodiment of the present invention Figure 8 Enlarged structural diagram at point B in the middle.

[0029] The numbers in the figure represent: 1. socket; 11. quick release part; 111. mounting seat; 112. through hole; 113. limiting ball; 114. fixing sleeve; 115. notch; 12. plug sleeve; 121. spiral groove; 122. ring groove; 1221. card slot; 123. guide rod; 124. counterweight; 2. external plug; 21. groove; 3. probe body; 31. probe body; 32. plug-in column; 33. ridge; 34. limiting part; 341. limiting block; 342. locking block; 343. abutment plate; 344. card block; 345. roller; 346. guide plate; 347. counterweight. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0031] The present invention will be further described below with reference to the embodiments. Example

[0032] See also Figures 1-9 The present invention provides a technical solution: a current probe with a mechanical locking and stable connection structure, comprising:

[0033] Socket 1, with a quick-release part 11 on the top, through which the socket 1 is connected to the external plug 2, and a plug sleeve 12 fixedly connected to the bottom of the socket 1, with a spiral groove 121 on the inner wall of the plug sleeve 12, and an annular groove 122 on the inner wall of the plug sleeve 12 close to the external plug 2;

[0034] The probe body 3 includes a probe body 31, a plug-in post 32 is detachably mounted on the top of the probe body 31, and a ridge 33 is provided on the outer circumference of the plug-in post 32 to fit the inner wall of the spiral groove 121. A mounting cavity is provided inside the plug-in post 32, and a stopper 34 is provided in the mounting cavity to lock the probe body 31;

[0035] Among them, the limiting member 34 includes a limiting block 341, which is slidably connected in the installation cavity. The limiting block 341 is slidably connected to the locking block 342 through a cavity set inside it. When the limiting block 341 moves into the annular groove 122, the primary limiting action is triggered, and when the locking block 342 moves into the annular groove 122, the secondary limiting action is triggered.

[0036] The quick-release part 11 includes a mounting base 111, which is fixedly connected to the top of the socket 1. A through hole 112 is provided on the inner wall of the mounting base 111, and a limiting ball 113 is provided in the through hole 112. The socket 1 is slidably connected to a fixing sleeve 114 that fits the outer surface of the circumference of the mounting base 111 through a shaft arranged at the top thereof, and a notch 115 is provided on the upper part of the inner wall of the fixing sleeve 114.

[0037] A groove 21 is formed on the outer surface of the external plug 2 to fit the surface of the limiting ball 113 , and the groove 21 is tapered.

[0038] The adjacent surfaces of a pair of limit blocks 341 are both designed with inclined surfaces, and the installation cavity is connected to an abutment plate 343 that fits the inclined surfaces of the limit blocks 341 through a return spring arranged at the bottom thereof.

[0039] A slot is provided at the top of the plug-in column 32, and the slot is communicated with the installation cavity. A guide rod 123 is fixedly connected to the top of the inner wall of the plug-in sleeve 12, and a counterweight block 124 that fits in with the inner wall of the slot is slidably connected to the outer surface of the guide rod 123. In the locked state, the bottom end of the counterweight block 124 fits in with the top of the abutment plate 343.

[0040] The locking block 342 is provided with an inclined surface on the side close to the abutment plate 343. The locking block 342 is connected to the inner wall of the cavity through a compression spring provided on its inclined surface, and a roller 345 is rotatably installed on the inclined surface. There are multiple rollers 345 and they are distributed in an array along the inclined surface. The locking block 342 is provided with an arc surface on the side away from the abutment plate 343, and a clamping block 344 is fixedly connected to the arc surface. There are multiple clamping blocks 344 and they are distributed in an array along the arc surface. A clamping groove 1221 that fits with the clamping block 344 is opened in the annular groove 122.

[0041] A guide plate 346 is fixedly connected in the cavity, and a counterweight plate 347 is slidably connected to the surface of the guide plate 346 . In the locked state, the bottom end of the counterweight plate 347 fits with the lower part of the inclined surface of the locking block 342 .

[0042] Principles and advantages of current probes with a mechanically locked, stable connection structure:

[0043] Installation of current probe:

[0044] First, place the probe body 31 with the probe in the upward position. At this time, the counterweight plate 347 and the counterweight block 124 will not contact the locking block 342 and the abutment plate 343 under the cooperation of their own gravity. It is worth noting that the counterweight plate 347 and the counterweight block 124 are made of high-density material, which can ensure that the counterweight plate 347 and the counterweight block 124 have a certain weight, which is sufficient to push the locking block 342 and the abutment plate 343 to move, and will not affect the detection results of the current probe. Then, the plug-in post 32 on the probe body 31 is connected to the plug sleeve 12 on the socket 1. At this time, the spiral groove 121 on the inner wall of the plug sleeve 12 will fit with the ridge 33 on the outer surface of the circumference of the plug-in post 32. Rotate the probe body 31 clockwise, and the ridge 33 will move along the spiral groove 121 until the plug-in post 32 moves to a suitable position in the plug sleeve 12. It is worth noting that the cross-sections of the ridge 33 and the spiral groove 121 are both trapezoidal. This shape enables it to generate greater friction when subjected to axial force. The trapezoidal spiral groove 121 and the ridge 33 cooperate with each other. Since the side friction of the trapezoidal cross-section is large, it can effectively prevent the plug sleeve 12 from loosening on the plug-in post 32 in the absence of external force driving it to rotate in the opposite direction, thereby achieving a better self-locking function.

[0045] When the plug-in column 32 moves along the spiral groove 121 to the inside of the plug-in sleeve 12, the staff puts the probe body 31 downward. At this time, the counterweight block 124 will first contact the abutment plate 343 under the cooperation of its own gravity, and will push the abutment plate 343 to move downward. At this time, the limit block 341 inside the plug-in column 32 will gradually extend out of the plug-in column 32 under the cooperation of the abutment plate 343. It is worth noting that the contact surface of the abutment plate 343 and the limit block 341 is an inclined surface, and the two inclined surfaces are parallel to each other. There is a The cam 343 is provided with a guide block, and a guide groove is provided on the inclined surface of the limit block 341. The guide block moves along the guide groove, which can increase the smoothness of movement between the abutment plate 343 and the limit block 341. As the abutment plate 343 moves, the return spring on the abutment plate 343 cooperates to realize the limit block 341 extending or retracting into the installation cavity in the plug-in column 32. When the limit block 341 extends out of the plug-in column 32, the arc surface position of the limit block 341 will abut against the arc surface in the annular groove 122, and the plane position of the limit block 341 will fit with the plane position of the annular groove 122, thereby The first-level locking between the probe body 31 and the socket 1 is realized, which can preliminarily fix the current probe and the socket 1, and can withstand a certain external force and vibration to prevent the probe from loosening or falling off due to slight shaking or pulling during normal use. At the same time, the counterweight plate 347 will move along the guide plate 346 under the action of its own gravity until the counterweight plate 347 contacts the inclined surface of the locking block 342. At this time, the locking block 342 will move along the cavity of the limit block 341 until the block 344 at the arc surface position of the locking block 342 contacts the groove 1221 set in the annular groove 122. The two components engage with each other, thereby achieving a two-stage locking between the probe body 31 and the socket 1. If the current probe and socket 1 tend to loosen, the locking block 342 can prevent them from detaching, maintaining a secure connection. It is worth noting that the roller 345 provided on the inclined surface of the locking block 342 reduces the friction between the counterweight plate 347 and the locking block 342. The friction between the locking block 342 and the counterweight plate 347 changes from sliding friction to rolling friction. The rolling friction coefficient is much smaller than the sliding friction coefficient, making it easier to push the locking block 342 to move. When the locking block 342 is engaged in the annular groove 122, the socket 1 and the probe body 31 are installed.

[0046] When it is necessary to separate the probe body 31 from the socket 1, the probe position of the probe body 31 is placed upward again. At this time, the counterweight plate 347 and the counterweight block 124 will respectively separate from the locking block 342 and the abutment plate 343 under the cooperation of their own gravity. When the locking block 342 and the counterweight plate 347 are no longer in contact, the locking block 342 will reset under the cooperation of the compression spring. At this time, the block 344 on the arc surface of the locking block 342 will separate from the slot 1221 in the annular groove 122 until the locking block 342 is completely moved into the cavity of the limit block 341. When the counterweight block 124 and the abutment plate 343 are separated from each other, the abutment plate 343 will reset to the mounting cavity in the plug column 32 under the cooperation of the reset spring, so that the limit member 34 will be in contact with the plug The sleeve 12 is unlocked, and then the probe body 31 is rotated counterclockwise. As the probe body 31 continues to rotate counterclockwise, the ridge 33 will move along the spiral groove 121 until the ridge 33 is completely out of the spiral groove 121. At this time, the probe body 31 will be separated from the socket 1. It is worth noting that during the installation of the probe body 31, the probe position of the probe body 31 is placed upward, which can ensure that the counterweight plate 347 and the counterweight block 124 do not contact the locking block 342 and the abutment plate 343. The plug-in column 32 is fully engaged in the plug-in sleeve 12. At this time, the probe position of the probe body 31 is placed downward. At this time, the limit block 341 and the locking block will fit into the annular groove 122, thereby realizing the locking between the probe body 31 and the socket 1. At the same time, during use, the probe body 31 will be placed vertically, and the probe position will be aligned with the detection point, so that the counterweight block 124 and the counterweight plate 347 will continue to apply pressure to the abutment plate 343 and the locking block 342.

[0047] In summary, the present invention uses the limiting member 34, the plug-in column 32 and the plug-in sleeve 12, which has the following advantages:

[0048] Advantage 1: The probe body 31 and the socket 1 are connected through the plug-in column 32, the ridge 33 in the plug-in sleeve 12, and the spiral groove 121, so that the probe body 31 can be disassembled or installed separately. Different types of probe bodies 31 can be replaced according to different detection requirements, so that the probe body 31 can perform testing work on different test points, which is conducive to improving detection efficiency.

[0049] Advantage 2: The ridges 33 on the surface of the plug-in column 32 and the spiral grooves 121 in the plug-in sleeve 12 are both trapezoidal in cross-section. The spiral grooves 121 and ridges 33 with trapezoidal cross-sections have good self-locking properties. This shape can withstand larger axial loads and has better guidance. Due to the small tooth angle, the radial component force generated under the same axial force is smaller, which makes the friction between the ridges 33 and the spiral grooves 121 relatively small during the tightening process, making it easier to install. At the same time, when subjected to axial loads, the ridges 33 and spiral grooves 121 with trapezoidal cross-sections have strong load-bearing capacity and can effectively prevent the connection from loosening.

[0050] Advantage three, after the plug-in column 32 and the plug-in sleeve 12 are installed, the probe body 31 is placed downward, and the counterweight block 124 will first contact the abutment plate 343 under the cooperation of its own gravity, and will push the abutment plate 343 to move downward, and the abutment plate 343 will drive the limit block 341 in the installation cavity to move until the limit block 341 extends out of the installation cavity and fits with the inner wall of the annular groove 122, so that the limit block 341 can achieve a first-level locking, which can prevent the probe body 31 from being subjected to axial force under vibration conditions and becoming loose. At the same time, the counterweight plate 347 Under the action of its own gravity, the locking block 342 will come into contact with the inclined surface of the locking block 342 along the guide plate 346, and then the locking block 342 will move a short distance along the cavity of the limit block 341 until the locking block 342 moves into the annular groove 122, and the block 344 and the groove 1221 engage with each other, thereby achieving secondary locking, which can prevent the probe body 31 from loosening due to radial force under vibration conditions. The limit member 34 resists the axial force and radial force, and can ensure the stability of the connection between the probe body 31 and the socket 1 during long-term use.

[0051] Advantage four: Since the limiter 34 shares the axial force and radial force, the harmful force on the spiral groove 121 and the ridge 33 is reduced. During normal use, the wear of the spiral groove 121 and the ridge 33 is mainly due to friction and deformation caused by the action of force. Through the protection of the limiter 34, the loosening-related force between the spiral groove 121 and the ridge 33 is reduced, thereby reducing the wear rate of the spiral groove 121 and the ridge 33. Under vibrating conditions, frequent vibrations may cause the spiral groove 121 and the ridge 33 to wear severely in a short period of time. With the limiter 34, the service life of the spiral groove 121 and the ridge 33 can be greatly extended, reducing the maintenance and replacement costs of the probe body 31.

[0052] Installation between socket 1 and plug:

[0053] Push the fixing sleeve 114 downward, and the fixing sleeve 114 will move along the shaft. When the notch 115 inside the fixing sleeve 114 is aligned with the through hole 112 on the mounting seat 111, since the through hole 112 is set to be conical, the limiting ball 113 will be separated along the inner wall of the through hole 112 under the action of its own gravity, and a part of the limiting ball 113 will move into the notch 115. Then, the external plug 2 is inserted into the mounting seat 111. At this time, the fixing sleeve 114 is released, and the fixing sleeve 114 will be reset with the cooperation of the spring on the shaft. During this process, the inner wall of the fixing sleeve 114 closes the through-hole 112 during movement, causing the limiting ball 113 to extend out of the through-hole 112 until it engages with the groove 21 on the surface of the external plug 2. It is worth noting that the through-hole 112 is tapered, and the limiting ball 113 can only extend partially, not fully, and the extended portion engages with the groove 21, thereby achieving quick installation between the external plug 2 and the receptacle 1. At the same time, the tapered sidewalls of the through-hole 112 facilitate the limiting ball 113's automatic disengagement from the groove 21 under its own weight. Furthermore, the external plug 2 is provided with connecting guide posts. Once the external plug 2, receptacle 1, and probe body 31 are installed, the probe body 31 connects to the connecting guide posts via the guide posts within the plug posts 32, facilitating stable transmission of the detection signal to the test equipment connected to the external plug 2. When separation is required, the external plug 2 and receptacle 1 can be separated by repeating the operation again.

[0054] In summary, the present invention uses the quick release member 11, which has the following advantages:

[0055] Its advantages are that the quick-release part 11 can quickly connect and disconnect the external plug 2 and the socket 1. In scenarios where frequent plugging and unplugging is required, such as electronic equipment testing and maintenance, the operation time can be greatly shortened and work efficiency can be improved. When the probe body 31 or the external plug 2 is damaged and needs to be replaced, the quick-release part 11 is easy to disassemble quickly without the need for complex tools and a lot of time to disassemble the circuit. The faulty parts can be replaced in time, and the quick-release part 11 can prevent the external plug 2 and the socket 1 from accidentally falling off, avoiding equipment damage, electric shock and other safety accidents, and ensuring the safety of personnel and equipment.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. 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 various embodiments of the present invention.

Claims

1. A current probe with a mechanical locking and stable connection structure, characterized in that: include: A socket (1), wherein a quick-release part (11) is provided on the top of the socket (1), the socket (1) is connected to an external plug (2) via the quick-release part (11), a plug sleeve (12) is fixedly connected to the bottom of the socket (1), and a spiral groove (121) is provided on the inner wall of the plug sleeve (12), and an annular groove (122) is provided on the inner wall of the plug sleeve (12) near the external plug (2); A probe body (3), the probe body (3) comprising a probe body (31), a plug-in column (32) being detachably mounted on the top of the probe body (31), and a ridge (33) being provided on the circumferential outer surface of the plug-in column (32) and being in contact with the inner wall of the spiral groove (121), a mounting cavity being provided inside the plug-in column (32), and a stopper (34) being provided in the mounting cavity for locking the probe body (31); The limiting member (34) includes a limiting block (341), the limiting block (341) is slidably connected in the installation cavity, the limiting block (341) is slidably connected to a locking block (342) through a cavity provided inside the limiting block (341), and when the limiting block (341) moves into the annular groove (122), a primary limiting action is triggered, and when the locking block (342) moves into the annular groove (122), a secondary limiting action is triggered; The quick-release component (11) includes a mounting seat (111), the mounting seat (111) is fixedly connected to the top of the socket (1), a through hole (112) is provided on the inner wall of the mounting seat (111), and a limiting ball (113) is provided in the through hole (112), the socket (1) is slidably connected to a fixing sleeve (114) that fits the outer circumference of the mounting seat (111) through a shaft arranged at the top thereof, and a notch (115) is provided on the upper part of the inner wall of the fixing sleeve (114); Among them, the adjacent surfaces of a pair of the limit blocks (341) are both designed with inclined surfaces, and the installation cavity is connected to an abutment plate (343) that fits the inclined surface of the limit block (341) through a return spring arranged at the bottom thereof, and a slot hole is provided at the top end of the plug-in column (32), and the slot hole is connected to the installation cavity, and a guide rod (123) is fixedly connected to the top of the inner wall of the plug-in sleeve (12), and the outer surface of the circumference of the guide rod (123) is slidably connected to a counterweight block (124) that fits the inner wall of the slot hole. In the locked state, the bottom end of the counterweight block (124) fits the top end of the abutment plate (343), and the A bevel is provided on one side of the locking block (342) close to the abutment plate (343), the locking block (342) is connected to the inner wall of the cavity via a compression spring provided on the bevel, and a roller (345) is rotatably mounted on the bevel, a plurality of rollers (345) are provided and distributed in an array along the bevel, a side of the locking block (342) away from the abutment plate (343) is provided with an arc surface, and a clamping block (344) is fixedly connected to the arc surface, a plurality of clamping blocks (344) are provided and distributed in an array along the arc surface, and a clamping groove (1221) is provided in the annular groove (122) to fit the clamping block (344); When the probe body (31) and the socket (1) need to be separated, the probe of the probe body (31) is placed upward, and the counterweight plate (347) and the counterweight block (124) are separated from the locking block (342) and the abutment plate (343) respectively under the action of their own gravity. At this time, the abutment plate (343) drives the limit block (341) to return to the installation cavity of the plug column (32) under the action of the reset spring, so as to release the lock between the limit member (34) and the plug sleeve (12); When the probe body (31) is rotated counterclockwise, the ridge (33) moves along the spiral groove (121) until it is separated from the spiral groove (121), thereby completing the separation of the probe body (31) and the socket (1).

2. The current probe with a mechanical locking and stable connection structure according to claim 1, characterized in that: A groove (21) is provided on the outer circumferential surface of the external plug (2) and is fitted with the surface of the limiting ball (113), and the groove (21) is tapered.

3. The current probe with a mechanical locking and stable connection structure according to claim 1, characterized in that: A guide plate (346) is fixedly connected in the cavity, and a counterweight plate (347) is slidably connected to the surface of the guide plate (346). In the locked state, the bottom end of the counterweight plate (347) fits into the lower part of the inclined surface of the locking block (342).

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