A voltage monitoring probe

Abstract

The utility model relates to voltage probe technical field, and disclose a voltage monitoring probe, including voltage detector, the both sides of voltage detector are equipped with wire and probe respectively, the surface sliding of wire and probe and voltage detector's junction is equipped with threaded sleeve, through setting up hooking mechanism, threaded sleeve and elastic pin piece threaded connection in place, pull down and rotate movable rod and make U type hook and enter the connecting hole of limit seat, after loosening, compression spring rebound pre -tension locking threaded sleeve, form axial limit. When the probe drags for a long time, the axial tension of the wire is transmitted to the threaded sleeve, the clamping of the U-shaped hook and the connecting hole reduces the influence of the tension on the threaded joint, prevents the relative rotation or displacement of the threaded sleeve and the elastic pin piece, avoids the loosening of the threaded connection due to continuous stress or alternating stress, ensures the stable connection of the wire, the probe and the voltage detector, and ensures the continuous and accurate transmission of the voltage signal.

Description

Technical Field

[0001] This utility model relates to the field of voltage probe technology, and in particular to a voltage monitoring probe. Background Technology

[0002] Voltage monitoring devices are key components used in power systems and electrical equipment testing for real-time monitoring of voltage parameters. They transmit voltage signals via a transmission line to a signal processing unit through contact or sensing of the circuit under test, providing crucial data support for equipment operation status assessment and fault diagnosis. Currently, commercially available monitoring devices typically consist of a signal processing unit, a transmission line, and a detection terminal. The transmission line and detection terminal are connected to opposite sides of the signal processing unit, and for ease of disassembly and maintenance, threaded connections are commonly used at the junctions of the transmission line and detection terminal with the signal processing unit.

[0003] However, in practical applications, when the detection end is in a state of long-term dragging, such as in work scenarios where the detection end needs to be moved frequently for multi-point detection, the transmission line will be continuously subjected to tension along its axis. This tension acts directly on the threaded joint at the connection between the transmission line and the signal processing unit. Since the threaded connection mainly relies on the friction between the threads to maintain tightness, the continuous tension will constantly try to overcome this friction. Over time, relative displacement will gradually occur between the threads, eventually leading to loosening of the connection. This not only affects the accuracy and stability of voltage monitoring, but may also cause the detection end to fall off due to connection failure, causing safety hazards. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a voltage monitoring probe.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a voltage monitoring probe, including a voltage detector, wherein a wire and a probe are respectively provided on both sides of the voltage detector, a threaded sleeve is slidably provided on the surface of the connection between the wire and the probe and the voltage detector, and a hooking mechanism is provided on the side of the voltage detector near the wire.

[0006] The hooking mechanism includes multiple sets of ear seats, with two ear seats in each set, evenly and fixedly installed on the surface of the voltage detector. A through hole is opened through the surface of the ear seat, and a movable rod is slidably installed inside the through hole. A U-shaped hook is fixedly installed on the side of the movable rod near the wire. Multiple limiting seats are evenly installed on the outer surface of a threaded sleeve near the wire. A connecting hole is opened through the surface of each limiting seat. A contact plate is fixedly installed in the middle of the movable rod, and a compression spring is provided on the side of the contact plate near the U-shaped hook.

[0007] Preferably, the compression spring is sleeved on the outside of the movable rod, and the side of the compression spring away from the touch plate is fixedly installed on the inside of the ear seat.

[0008] Preferably, plugs are fixedly installed at the corresponding positions of the wires and probes and the voltage detector, and wiring slots are provided at both ends of the voltage detector.

[0009] Preferably, the wires and probes are respectively inserted into the wiring slots on both sides of the voltage detector via plugs, and limiting plates are fixedly installed on the surface of the wires and probes near the voltage detector. The threaded sleeve slides between the plug and the limiting plates.

[0010] Preferably, three elastic pins are fixedly installed on both sides of the voltage detector. The three elastic pins are distributed in a circle and located on the outside of the wiring groove. Threaded grooves are formed on the surface of the three elastic pins.

[0011] Preferably, the threaded sleeves on the surface of the wire and probe are threadedly connected to both ends of the voltage detector through the threaded grooves on the surfaces of three elastic pins.

[0012] Preferably, the radius of the elastic pin on the side closer to the wire and probe is larger than the radius on the side closer to the voltage detector, and an insulating and wear-resistant layer is fixedly provided on the inner wall of the elastic pin, the thickness of which is 0.3-0.8mm.

[0013] Preferably, the U-shaped hook is adapted to the connecting hole, and the end of the movable rod away from the U-shaped hook is provided with a protrusion for easy operation.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. By setting up a hook mechanism, after the threaded sleeve and the elastic pin are threadedly connected in place, pull down and rotate the movable rod to make the U-shaped hook engage with the connection hole of the limiting seat. After releasing, the compression spring rebounds and pre-tightens to lock the threaded sleeve, forming an axial limit. When the probe is dragged for a long time, the axial tension of the wire is transmitted to the threaded sleeve. The engagement of the U-shaped hook with the connection hole reduces the impact of this tension on the threaded joint, prevents the threaded sleeve and the elastic pin from rotating or displacing relative to each other, and avoids the threaded connection from loosening due to continuous force or alternating stress. This ensures a stable connection between the wire, probe and voltage detector, and ensures continuous and accurate voltage signal transmission.

[0016] 2. By setting three circularly distributed elastic pins, when the threaded sleeve is tightened, because the radius of the elastic pins near the wire and probe is larger than that near the voltage detector, the inner wall of the elastic pins exerts a radial inward squeezing force on the elastic pins, causing the elastic pins to deform and fit tightly against the outer wall of the voltage detector end. The reaction force generated by the deformation acts on the inner wall of the threaded sleeve, which can increase the friction between the two to improve the threaded connection preload. In addition, the continuous elastic force of the elastic pins can compensate for the wear clearance of the thread after long-term use, alleviate the fatigue damage of the thread teeth, and form a double fastening with the hooking mechanism to ensure reliable connection under frequent dragging conditions.

[0017] 3. By designing the wires, probes, and voltage detector into a modular structure, the wires and probes are connected to the wiring slots of the voltage detector via plugs, and are fixed by the threaded connection of the threaded sleeve and the elastic pin. When a component fails, the wire or probe can be removed for repair or replacement without disassembling the entire device. This simplifies the disassembly and assembly process, reduces maintenance difficulty, and minimizes the cost waste caused by replacing the entire device, while ensuring connection stability and improving the maintenance convenience and service life of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the voltage detector of this utility model on both sides;

[0020] Figure 3 This is an exploded structural diagram of the connection between the voltage detector and the wire of this utility model;

[0021] Figure 4 This is an exploded structural diagram of the connection between the voltage detector and the wire of this utility model;

[0022] Figure 5 This is an exploded structural diagram of part of the interlocking mechanism of this utility model.

[0023] Figure label:

[0024] 1. Voltage detector; 101. Wire; 102. Probe;

[0025] 21. Plug; 22. Wiring slot;

[0026] 3. Threaded sleeve; 301. Elastic pin; 302. Threaded groove;

[0027] 4. Limiting plate;

[0028] 5. Hooking mechanism; 501. Ear seat; 502. Through hole; 503. Movable rod; 504. U-shaped hook; 505. Limit seat; 506. Connecting hole; 507. Compression spring; 508. Contact plate. Detailed Implementation

[0029] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0031] Example: Reference Figures 1-5 A voltage monitoring probe includes a voltage detector 1, with a wire 101 and a probe 102 respectively provided on both sides of the voltage detector 1. A threaded sleeve 3 is slidably provided on the surface of the connection between the wire 101 and the probe 102 and the voltage detector 1. A hooking mechanism 5 is provided on the side of the voltage detector 1 near the wire 101.

[0032] The hooking mechanism 5 includes multiple sets of ear seats 501. Each set of ear seats 501 has two ear seats 501, which are evenly and fixedly installed on the surface of the voltage detector 1. A through hole 502 is opened through the surface of the ear seat 501. A movable rod 503 is slidably installed inside the through hole 502. A U-shaped hook 504 is fixedly installed on the side of the movable rod 503 near the wire 101. Multiple limit seats 505 are evenly installed on the outer surface of a threaded sleeve 3 near the wire 101. A connecting hole 506 is opened through the surface of each limit seat 505. A contact plate 508 is fixedly installed in the middle of the movable rod 503. A compression spring 507 is provided on the side of the contact plate 508 near the U-shaped hook 504.

[0033] Specifically: The hook mechanism 5 provides axial limiting for the threaded sleeve 3. The movable rod 503 serves as a connection and transmission mechanism, transmitting the external force applied by the operator to the U-hook 504. Simultaneously, it drives the contact plate 508 to compress or release the compression spring 507, thereby adjusting the position of the U-hook 504. The U-hook 504 can directly limit the axial displacement of the threaded sleeve 3 through a snap-fit ​​engagement, forming a mechanical lock. The contact plate 508 serves as the force fulcrum for the compression spring 507, converting the linear motion of the movable rod 503 into a compressive force on the compression spring 507. At the same time, it drives the movable rod 503 to reset when the spring rebounds. The compression spring 507 utilizes its elastic deformation characteristics to provide a continuous preload after the U-hook 504 is engaged in the connecting hole 506, ensuring a tight fit between the U-hook 504 and the connecting hole 506 and preventing loosening of the engagement.

[0034] After the threaded sleeve 3 is tightened into place, by pulling the end of the movable rod 503 away from the U-shaped hook 504, the movable rod 503 slides along the through hole 502 of the lug 501. The contact plate 508 continuously presses the compression spring 507, aligning the U-shaped hook 504 with the connection hole 506 of the limit seat 505 and locking it in. After releasing the movable rod 503, the compression spring 507 rebounds and pushes the contact plate 508 to drive the movable rod 503 to reset, so that the U-shaped hook 504 is firmly locked with the connection hole 506. At this time, the threaded sleeve 3 is axially locked and cannot produce axial displacement or relative rotation, effectively offsetting the influence of the axial tension generated when the wire 101 is dragged on the threaded connection, ensuring the stability of the overall connection.

[0035] Compression spring 507 is sleeved on the outside of movable rod 503, and the side of compression spring 507 away from contact plate 508 is fixedly installed on the inside of ear seat 501. Plugs 21 are fixedly installed at the corresponding positions of wire 101 and probe 102 and voltage detector 1. Wiring grooves 22 are opened at both ends of voltage detector 1. Wire 101 and probe 102 are respectively inserted into the wiring grooves 22 on both sides of voltage detector 1 through plugs 21. Limiting pieces 4 are fixedly installed on the surface of wire 101 and probe 102 near voltage detector 1. Threaded sleeve 3 slides between plug 21 and limiting piece 4.

[0036] Specifically: the combination of plug 21 and wiring slot 22 enables rapid electrical connection between wire 101, probe 102 and voltage detector 1. The way plug 21 is inserted into wiring slot 22 provides a preliminary positioning reference for the three and ensures the stability of the signal transmission path. The setting of limit piece 4 limits the sliding range of threaded sleeve 3 and prevents threaded sleeve 3 from detaching from wire 101 or probe 102 during sliding.

[0037] The wire 101 and probe 102 are initially connected by inserting plug 21 into the wiring slot 22 of voltage detector 1. At this time, threaded sleeve 3 can slide freely between plug 21 and limit piece 4. When a tight connection is required, push threaded sleeve 3 to slide towards plug 21 and tighten it until threaded sleeve 3 and elastic pin 301 are fully threaded. Limit piece 4 then prevents threaded sleeve 3 from sliding further, ensuring that the threaded connection is in place. When hooking mechanism 5 is activated, compression spring 507 is sleeved on the outside of movable rod 503 and fixed inside ear seat 501. When movable rod 503 slides, contact plate 508 compresses spring 507. After release, spring can stably push movable rod 503 to reset, so that U-hook 504 is tightly engaged with connection hole 506, forming multiple fastening guarantees.

[0038] Three elastic pins 301 are fixedly installed on both sides of the voltage detector 1. The three elastic pins 301 are distributed in a circle and located on the outside of the wiring groove 22. The surface of the three elastic pins 301 is provided with threaded grooves 302. The threaded sleeves 3 on the surface of the wire 101 and the probe 102 are threadedly connected to both ends of the voltage detector 1 through the threaded grooves 302 on the surface of the three elastic pins 301.

[0039] The radius of the elastic pin 301 on the side closer to the wire 101 and the probe 102 is larger than the radius on the side closer to the voltage detector 1. An insulating and wear-resistant layer is fixedly provided on the inner wall of the elastic pin 301. The thickness of the insulating and wear-resistant layer is 0.3-0.8mm. The U-shaped hook 504 is adapted to the connecting hole 506. The end of the movable rod 503 away from the U-shaped hook 504 is provided with a protrusion for easy operation.

[0040] Specifically: The circular distribution of the three elastic pins 301 can evenly distribute the force and avoid local stress concentration. The radius of the elastic pins 301 on the side closer to the wire 101 and probe 102 is larger than that on the side closer to the voltage detector 1. This structural characteristic allows the threaded sleeve 3 to generate a radially inward compressive force on the elastic pins 301 when it is tightened, causing it to undergo elastic deformation and fit tightly against the inner wall of the threaded sleeve 3, thereby enhancing the connection sealing and firmness.

[0041] Meanwhile, the protrusion at one end of the movable rod 503 provides a convenient point of force for the operator, making it easy to pull the movable rod 503 to engage or disengage the U-shaped hook 504 with the connecting hole 506, thus improving ease of use. When the plug 21 of the wire 101 and the probe 102 is inserted into the wiring slot 22, the sliding threaded sleeve 3 is threaded to connect with the threaded groove 302 on the surface of the elastic pin 301. As the threaded sleeve 3 is tightened, due to the difference in radius on both sides of the elastic pin 301, it will be squeezed and deformed and tightly fit against the end of the voltage detector 1, and the insulating wear-resistant layer will simultaneously contact the outer wall of the voltage detector 1. At the same time, by pulling the movable rod 503 through the protrusion, the U-shaped hook 504 is engaged in the connecting hole 506. The fit between the U-shaped hook 504 and the connecting hole 506 is used to achieve a stable engagement, completing the overall connection and fixation.

[0042] The working principle of this utility model is as follows: In specific use, firstly, the plugs 21 of the wire 101 and the probe 102 are inserted into the wiring slots 22 on both sides of the voltage detector 1 to make the three initially connected; then, the threaded sleeves 3 on the surface of the wire 101 and the probe 102 are slid to tighten them along the threaded grooves 302 on the surface of the elastic pin 301. During the tightening process, because the radius of the elastic pin 301 on the side closer to the wire 101 and the probe 102 is larger than that on the side closer to the voltage detector 1, the inner wall of the threaded sleeve 3 generates a radially inward squeezing force on the elastic pin 301, causing the elastic pin 301 to undergo elastic deformation and tightly fit against the inner wall of the threaded sleeve 3. The reaction force generated by the deformation enhances the preload of the threaded connection.

[0043] After the threaded sleeve 3 is tightened into place, pull down and adjust to a suitable angle to rotate the movable rod 503. The movable rod 503 slides along the through hole 502 of the lug 501. The contact plate 508 compresses the spring 507 in sync, aligning the U-shaped hook 504 with the connecting hole 506 of the limiting seat 505 and locking it in. After releasing the movable rod 503, the compression spring 507 rebounds and pushes the contact plate 508 and the movable rod 503 back to their original positions, so that the U-shaped hook 504 is tightly locked with the connecting hole 506, forming an axial locking limit for the threaded sleeve 3.

[0044] During monitoring, when the probe is subjected to prolonged dragging, the axial tension on the wire 101 is transmitted to the threaded sleeve 3. The snap-fit ​​between the U-shaped hook 504 and the connecting hole 506 reduces the impact of this tension on the threaded joint and prevents relative displacement between the threaded sleeve 3 and the elastic pin 301. At the same time, the continuous elastic force of the elastic pin 301 can compensate for the wear gap caused by long-term use of the thread, forming a double fastening with the hook mechanism 5, ensuring that the connection between the wire 101 and the probe 102 and the voltage detector 1 is always stable, and ensuring that the voltage signal is stably transmitted to the voltage detector 1 for processing.

[0045] If disassembly and maintenance are required, first pull down the movable rod 503 to disengage the U-shaped hook 504 from the connecting hole 506, rotate the movable rod 503 to misalign the U-shaped hook 504 with the connecting hole 506, and then release it. Due to the reset effect of the compression spring 507, the movable rod 503 drives the U-shaped hook 504 to automatically return to its original position, which is convenient for the next assembly. Then, rotate the threaded sleeve 3 in the opposite direction to loosen the elastic pin 301 from the voltage detector 1, so that the wire 101 or probe 102 can be pulled out from the wiring slot 22 individually, realizing the individual disassembly and assembly of the modular components.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A voltage monitoring probe, comprising a voltage detector (1), wherein a wire (101) and a probe (102) are respectively provided on both sides of the voltage detector (1), characterized in that: A threaded sleeve (3) is slidably provided on the surface of the connection between the wire (101) and the probe (102) and the voltage detector (1), and a hooking mechanism (5) is provided on the side of the voltage detector (1) near the wire (101); The hooking mechanism (5) includes multiple sets of ear seats (501). Each set of ear seats (501) has two ear seats (501) and is evenly fixedly installed on the surface of the voltage detector (1). The surface of the ear seat (501) is provided with a through hole (502). A movable rod (503) is slidably provided inside the through hole (502). A U-shaped hook (504) is fixedly installed on the side of the movable rod (503) near the wire (101). Multiple limiting seats (505) are evenly installed on the outer surface of a threaded sleeve (3) near the wire (101). The surface of each limiting seat (505) is provided with a connecting hole (506). A contact plate (508) is fixedly installed in the middle of the movable rod (503). A compression spring (507) is provided on the side of the contact plate (508) near the U-shaped hook (504).

2. A voltage monitoring probe according to claim 1, characterized in that: The compression spring (507) is sleeved on the outside of the movable rod (503), and the side of the compression spring (507) away from the touch plate (508) is fixedly installed on the inside of the ear seat (501).

3. A voltage monitoring probe according to claim 1, characterized in that: The wire (101) and probe (102) are each fixedly installed with plugs (21) at their corresponding positions with the voltage detector (1), and the voltage detector (1) has wiring slots (22) at both ends.

4. A voltage monitoring probe according to claim 3, characterized in that: The wire (101) and probe (102) are respectively inserted into the wiring slots (22) on both sides of the voltage detector (1) via plug (21). Limiting plates (4) are fixedly installed on the side surface of the wire (101) and probe (102) near the voltage detector (1). The threaded sleeve (3) slides between the plug (21) and the limiting plate (4).

5. A voltage monitoring probe according to claim 4, characterized in that: Three elastic pins (301) are fixedly installed on both sides of the voltage detector (1). The three elastic pins (301) are arranged in a circle and located on the outside of the wiring groove (22). Threaded grooves (302) are opened on the surface of the three elastic pins (301).

6. A voltage monitoring probe according to claim 5, characterized in that: The threaded sleeves (3) on the surfaces of the wire (101) and probe (102) are threadedly connected to both ends of the voltage detector (1) through the threaded grooves (302) on the surfaces of three elastic pins (301).

7. A voltage monitoring probe according to claim 6, characterized in that: The radius of the elastic pin (301) near the wire (101) and probe (102) is greater than the radius of the side near the voltage detector (1), and an insulating and wear-resistant layer is fixedly provided on the inner wall of the elastic pin (301), the thickness of which is 0.3-0.8mm.

8. A voltage monitoring probe according to claim 1, characterized in that: The U-shaped hook (504) is adapted to the connecting hole (506), and the end of the movable rod (503) away from the U-shaped hook (504) is provided with a protrusion for easy operation.

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