An oscilloscope probe that is easy to replace and maintain.

Abstract

This utility model belongs to the field of oscilloscope probe technology and discloses an oscilloscope probe that is easy to replace and maintain. It includes an oscilloscope connector, a handheld probe rod, connecting wires, an electrical contact probe, and a grounding alligator clip. The signal to be measured is acquired by the tip or hook of the detachable electrical contact probe, transmitted to the attenuation circuit inside the handheld probe rod via a telescopic rod, and the signal attenuation is adjusted by a range switch. The signal is then connected to the oscilloscope via a standard BNC interface through the connecting wires. The electrical contact probe can be quickly replaced. The probe extension / retraction structure is driven by an internal threaded ring and a limiting component, combining detection accuracy and protection. Color-coded slots enable rapid channel matching, and the grounding alligator clip constructs a reliable grounding loop through a shielded wire and a metal ring. This probe solves the problems of traditional probes being easily damaged, having limited functionality, and being inconvenient to maintain. While ensuring signal transmission accuracy, it improves durability and ease of operation, making it suitable for diverse electronic testing scenarios.

Description

Technical Field

[0001] This utility model relates to the field of oscilloscope probe technology, specifically to an oscilloscope probe that is easy to replace and maintain. Background Technology

[0002] In the field of electronic circuit testing, oscilloscope probes are the core tools for acquiring electrical signal waveforms, and their performance and reliability directly affect testing efficiency and accuracy. As electronic devices become increasingly miniaturized and integrated, higher demands are placed on the accuracy and adaptability of oscilloscope probes.

[0003] Most oscilloscope probes currently on the market use a fixed probe design with extremely small tips. This design allows for precise contact with tiny components on circuit boards or narrow testing points, thereby obtaining accurate waveform data. However, this design also has significant drawbacks: due to the brittle material and delicate structure of the probe, it is highly susceptible to bending, breakage, and other damage when frequently inserted or removed, or when in contact with hard surfaces. Once the probe is damaged, it not only leads to signal acquisition distortion, affecting the accuracy of the test results, but more seriously, because most probes have an integrated probe design with the main body, local repair is difficult, requiring the entire probe to be scrapped. This undoubtedly increases testing costs and wastes resources significantly.

[0004] Furthermore, in practical testing, for certain wire connection points or special installation environments, using a hook-type probe can more securely hook onto the wire being tested, avoiding signal fluctuations caused by poor contact and greatly improving the convenience of testing operations. However, in existing technologies, the function conversion is usually achieved by attaching a probe cap over the tip of the probe. While this solution can meet the needs to a certain extent, it has significant drawbacks: because the probe cap and the needle are usually fixed by a simple sleeve, excessive force or improper operation by the operator can easily cause the fragile needle to be squeezed and deformed; and after long-term use, the probe cap may loosen or fall off, not only failing to provide stable fixation but also potentially exposing the needle, increasing the risk of damage and thus affecting the continuity and effectiveness of the testing work. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an oscilloscope probe that is easy to replace and maintain, thus solving the problems mentioned in the background section, such as the inconvenience of using the probe cap and the easy damage of the probe.

[0006] (II) Technical Solution To achieve the above-mentioned objectives, this utility model provides the following technical solution: an oscilloscope probe that is easy to replace and maintain, comprising: Oscilloscope connector, wherein the oscilloscope connector is a standard BNC connector; A handheld probe, which is a cylindrical rod structure, has an attenuation circuit inside, an attenuation level switch on the handheld probe, and a connection interface at one end of the handheld probe; A connecting wire is provided, one end of which is connected to the oscilloscope connector, and the other end of which is connected to the handheld probe. A detachable electrical probe is provided on one side of the handheld probe. The electrical probe is detachable and electrically connected through the connection interface. The electrical probe is provided with a needle telescopic structure and a needle. The needle drives the needle telescopic structure to extend and retract relative to the electrical probe. A grounding alligator clip is provided on one side of the handheld probe. The grounding alligator clip is electrically connected to the handheld probe through a wire and a metal ring to achieve grounding.

[0007] Preferably, both the oscilloscope connector and the handheld probe are provided with color mark slots, and the color mark slots are provided with color marks of the same color.

[0008] Preferably, one end of the electrical probe is provided with a fixed contact block corresponding to the connection interface, the fixed contact block is provided with an electrical contact base at its center, the fixed contact block is inserted into the connection interface, and the electrical probe is electrically connected to the handheld probe rod through the electrical contact base.

[0009] Preferably, the needle telescopic structure includes an internally threaded ring, a telescopic rod, a limiting groove, and a limiting block. The electrical contact probe base is provided with a rotatable internally threaded ring, and the telescopic rod is threadedly connected to the center of the internally threaded ring. One end of the telescopic rod is fixedly connected to the needle, and the other end of the telescopic rod is electrically connected to the electrical contact base through a wire. The electrical contact probe base is provided with two sets of limiting grooves, and the limiting block is slidably engaged in the limiting groove. The limiting block is fixedly connected to the telescopic rod.

[0010] Preferably, the electrical contact probe has a window corresponding to the internal threaded ring.

[0011] Preferably, the needle is either a pointed needle or a hook needle.

[0012] Preferably, the electrical contact probe with the hook is provided with a hook slot.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides an oscilloscope probe that is easy to replace and maintain, and has the following advantages: 1. This easy-to-replace and maintain oscilloscope probe is equipped with an oscilloscope connector, handheld probe rod, connecting wire, electrical probe, and grounding alligator clip. The tip and hook can be switched by replacing the electrical probe. The electrical probe can be completely disassembled and stored. The tip is not easily damaged and is easy to repair and maintain if damaged. It is convenient to use and has high practicality.

[0014] 2. It is equipped with a detachable electrical contact probe, which can be used to replace the tip and hook. Compared with the probe cap method, it can greatly improve the detection accuracy, is less likely to damage the needle, is very convenient to use, and can be directly replaced if the electrical contact probe is damaged, making maintenance very convenient.

[0015] 3. It is equipped with a needle retraction structure, which can retract the fragile needle inside the electrical contact probe, effectively preventing needle damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the handheld probe and electrical contact probe of this utility model; Figure 3 This is a schematic diagram of the needle telescopic structure of this utility model; Figure 4 This is a schematic diagram of the electrical contact probe with hook needle of this utility model.

[0017] In the diagram: 1. Oscilloscope connector; 2. Handheld probe; 3. Connecting wire; 4. Electrical probe; 5. Grounding alligator clip; 6. Color mark slot; 7. Attenuation level switch; 8. Connecting interface; 9. Fixing block; 10. Electrical base; 11. Needle telescopic structure; 12. Needle; 13. Internal threaded dial; 14. Telescopic rod; 15. Limiting groove; 16. Limiting block; 17. Dial window; 18. Hook needle slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution: An oscilloscope probe that is easy to replace and maintain includes: Oscilloscope connector 1, which is a standard BNC connector; Handheld probe 2, which is a cylindrical rod structure, has an attenuation circuit inside, an attenuation level switch 7 on the handheld probe 2, and a connection interface 8 at one end of the handheld probe 2; Connect wire 3, one end of which is connected to oscilloscope connector 1, and the other end of which is connected to handheld probe 2; A detachable electrical probe 4 is provided on one side of the handheld probe 2. The electrical probe 4 is detachable and electrically connected through the connection interface 8. The electrical probe 4 is provided with a needle telescopic structure 11 and a needle 12. The needle 12 drives the needle telescopic structure 11 to extend and retract relative to the electrical probe 4. Grounding alligator clip 5 is installed on one side of the handheld probe 2. The grounding alligator clip 5 is electrically connected to the handheld probe 2 through a wire and a metal ring to achieve grounding.

[0020] Furthermore, both the oscilloscope connector 1 and the handheld probe 2 are provided with color mark slots 6, and color mark slots 6 are provided with color marks of the same color.

[0021] Furthermore, one end of the electrical probe 4 is provided with a fixed contact block 9 corresponding to the connection interface 8, and the fixed contact block 9 is provided with an electrical contact base 10 at its center. The fixed contact block 9 is inserted into the connection interface 8, and the electrical probe 4 is electrically connected to the handheld probe 2 through the electrical contact base 10.

[0022] Furthermore, the needle telescopic structure 11 includes an internally threaded ring 13, a telescopic rod 14, a limiting groove 15, and a limiting block 16. The electrical contact probe 4 base is provided with a rotatable internally threaded ring 13. The center thread of the internally threaded ring 13 is connected to the telescopic rod 14. One end of the telescopic rod 14 is fixedly connected to the needle 12, and the other end of the telescopic rod 14 is electrically connected to the electrical contact base 10 through a wire. The electrical contact probe 4 base is provided with two sets of limiting grooves 15. The limiting block 16 is slidably engaged in the limiting groove 15, and the limiting block 16 is fixedly connected to the telescopic rod 14.

[0023] Furthermore, a dial window 17 is provided on the electrical contact probe 4 at the corresponding position of the internal thread dial ring 13.

[0024] Furthermore, the needle 12 is either a pointed needle or a hook needle.

[0025] Furthermore, the electrical contact probe 4 for the hook is provided with a hook retainer groove 18. The hook retainer groove 18 provides clearance for the hook and facilitates the retraction of the hook.

[0026] Structural Description: Oscilloscope Connection Connector 1: Standard BNC connector for connecting to an oscilloscope to enable signal transmission between the probe and the oscilloscope; Handheld probe 2: Cylindrical rod structure, with an internal attenuation circuit and an external attenuation level switch 7 and connection interface 8. It is the main holding part of the probe and also has signal processing and function switching functions. Connecting wire 3: Both ends are connected to the oscilloscope connector 1 and the handheld probe 2 respectively, for transmitting electrical signals and realizing the electrical connection between the probe and the oscilloscope; Electrical probe 4: A detachable component located on one side of the handheld probe 2. It is detachable and electrically connected to the handheld probe 2 via the connection interface 8. It integrates a needle telescopic structure 11 and a needle 12 for contacting the measured point to collect electrical signals. Grounding alligator clip 5: Located on one side of the handheld probe 2, it is electrically connected to the handheld probe 2 through a wire and a metal ring, and is used to connect to the grounding terminal of the circuit under test to form a grounding loop; Color mark slots 6: These are respectively set on the oscilloscope connector 1 and the handheld probe 2. The slots are equipped with color marks of the same color to quickly match the probe with the oscilloscope channel and avoid misoperation. Attenuation level switch 7: Located on the handheld probe 2, it is used to control the resistor network configuration of the internal attenuation circuit and realize the switching of signal attenuation levels such as ×1 or ×10. Connection interface 8: Located at one end of the handheld probe 2, it is inserted into the fixing block 9 of the electrical probe 4 to realize the mechanical connection and electrical conduction between the electrical probe 4 and the handheld probe 2; Fixed connector 9: One end of the electrical probe 4 corresponds to the connection interface 8, and an electrical base 10 is set in the center. It is connected to the handheld probe 2 by plugging in to ensure the mechanical stability of the electrical probe 4 and signal transmission. Electrical base 10: Located at the center of fixed contact block 9, it is connected to the internal circuit of handheld probe 2 and connected to the telescopic rod 14 of electrical probe 4 through wires to realize the transmission of the collected signal to handheld probe 2; Needle telescopic structure 11: includes an internal threaded dial ring 13, a telescopic rod 14, a limiting groove 15 and a limiting block 16. By rotating the internal threaded dial ring 13, the telescopic rod 14 is driven to extend or retract the needle 12. The limiting component ensures the stability of the movement and has both detection and protection functions. Needle 12: The signal acquisition end of the electrical probe 4, which can be a sharp needle or a hook. The sharp needle is used for precise point measurement of tiny parts, and the hook is used to hook the wire-like object being measured to achieve signal acquisition in different scenarios. Internal threaded dial 13: Rotatably disposed in the base of the electrical contact probe 4, threadedly connected to the telescopic rod 14, and drives the telescopic rod 14 to move axially by rotation, thereby controlling the extension and retraction state of the needle 12; Telescopic rod 14: One end is fixedly connected to the needle 12, and the other end is electrically connected to the electrical base 10 through a wire. Under the action of threaded transmission, it drives the needle 12 to move and transmits the collected electrical signals at the same time. Limiting groove 15: Two sets of grooves are provided in the base of the electrical contact probe 4, which are slidably engaged with the limiting block 16 to limit the movement trajectory of the telescopic rod 14, ensuring that it only moves in a straight line and avoids rotation; Limiting block 16: It is fixedly connected to the telescopic rod 14 and snapped into the limiting groove 15. Through the guiding effect of the limiting groove 15, it ensures that the telescopic rod 14 drives the needle 12 to extend and retract stably. Window 17: A window on the electrical probe 4 corresponding to the internal threaded dial 13, which allows the user to rotate the internal threaded dial 13 with a tool or finger to operate the needle telescopic structure 11. Hook slot 18: Located on the electrical contact probe 4 with hook, providing storage space for the hook. Working Principle: During testing, the electrical signal of the circuit under test is acquired by the needle 12 of the electrical contact probe 4. The needle 12 can be selected as a sharp needle or a hook needle as needed. The sharp needle is used for precise testing of small parts such as solder joints on the circuit board, while the hook needle can firmly hook onto wires or other objects under test. The acquired electrical signal is transmitted to the electrical contact base 10 via the telescopic rod 14, which is fixedly connected to the needle 12, through its built-in wire. The fixing block 9 of the electrical contact probe 4 is tightly connected to the connection interface 8 of the handheld probe 2, so that the electrical contact base 10 and the circuit inside the handheld probe 2 are electrically connected, thereby transmitting the signal to the attenuation circuit. The user can control the resistor network configuration of the attenuation circuit by operating the attenuation level switch 7 on the handheld probe 2, realizing the switching of different levels such as ×1 or ×10 to adapt to different amplitudes of the tested signal. The attenuated signal is transmitted to the standard BNC connector 1 of the oscilloscope via the connecting wire 3, and finally connected to the oscilloscope for waveform analysis. During this process, the resistor divider network and compensation capacitor in the attenuation circuit work together to ensure accurate signal transmission at different frequencies, avoiding high-frequency distortion. It is worth mentioning that the detachable design of the electrical probe 4 greatly facilitates maintenance and function switching. When the needle 12 is damaged or needs to be replaced with a different type of needle, the user can directly unplug the electrical probe 4, insert a suitable new probe module, and quickly restore the detection function. Meanwhile, the needle telescopic structure 11 further enhances the probe's durability. The user rotates the internal threaded dial ring 13 through the dial window 17 on the electrical probe 4, using the threaded transmission principle to cause the telescopic rod 14 to extend or retract the needle 12. The cooperation between the limiting block 16 and the limiting groove 15 ensures that the telescopic rod 14 only moves in a linear motion, avoiding instability caused by rotation. When not in use, retracting the needle 12 into the electrical probe 4 effectively prevents damage from impacts. In addition, the color mark slots 6 on the oscilloscope connector 1 and the handheld probe 2 are equipped with color marks of the same color, which makes it easy for users to quickly match the probe with the oscilloscope channel and reduce misoperation; the grounding alligator clip 5 is electrically connected to the handheld probe 2 through a wire and a metal ring. When in use, it clamps the grounding terminal of the circuit under test, so that the probe system and the circuit under test share a common ground, eliminating potential difference interference. Moreover, the grounding wire adopts a shielded design, which, together with the spring structure of the alligator clip, ensures reliable grounding and reduces the impact of external electromagnetic interference on the measurement results.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oscilloscope probe that is easy to replace and maintain, characterized in that, include: Oscilloscope connector (1), wherein the oscilloscope connector (1) is a standard BNC plug port; Handheld probe (2), the handheld probe (2) is a cylindrical rod structure, the handheld probe (2) is provided with an attenuation circuit, the handheld probe (2) is provided with an attenuation level switch (7), and one end of the handheld probe (2) is provided with a connection interface (8). Connecting wire (3), one end of the connecting wire (3) is connected to the oscilloscope connector (1), and the other end of the connecting wire (3) is connected to the handheld probe (2); A detachable electrical probe (4) is provided on one side of the handheld probe (2). The electrical probe (4) is detachable and electrically connected through the connection interface (8). The electrical probe (4) is provided with a needle telescopic structure (11) and a needle (12). The needle (12) drives the needle telescopic structure (11) to extend and retract relative to the electrical probe (4). Grounding alligator clip (5) is disposed on one side of the handheld probe (2). The grounding alligator clip (5) is electrically connected to the handheld probe (2) through a wire and a metal ring to achieve grounding.

2. The oscilloscope probe that is easy to replace and maintain according to claim 1, characterized in that: Both the oscilloscope connector (1) and the handheld probe (2) are provided with color mark grooves (6), and color marks of the same color are provided in the color mark grooves (6).

3. The oscilloscope probe that is easy to replace and maintain according to claim 1, characterized in that: One end of the electrical probe (4) is provided with a fixed contact block (9) corresponding to the connection interface (8). The fixed contact block (9) is provided with an electrical contact base (10) at its center. The fixed contact block (9) is inserted into the connection interface (8). The electrical probe (4) is electrically connected to the handheld probe rod (2) through the electrical contact base (10).

4. The oscilloscope probe that is easy to replace and maintain according to claim 3, characterized in that: The needle telescopic structure (11) includes an internal threaded ring (13), a telescopic rod (14), a limiting groove (15), and a limiting block (16). The electrical contact probe (4) base is provided with a rotatable internal threaded ring (13). The center thread of the internal threaded ring (13) is connected to the telescopic rod (14). One end of the telescopic rod (14) is fixedly connected to the needle (12), and the other end of the telescopic rod (14) is electrically connected to the electrical contact base (10) through a wire. The electrical contact probe (4) base is provided with two sets of limiting grooves (15). The limiting block (16) is slidably engaged in the limiting groove (15), and the limiting block (16) is fixedly connected to the telescopic rod (14).

5. An oscilloscope probe that is easy to replace and maintain according to claim 4, characterized in that: The electrical contact probe (4) has a dial window (17) at the position corresponding to the internal thread dial ring (13).

6. An oscilloscope probe that is easy to replace and maintain according to claim 4, characterized in that: The needle (12) is either a pointed needle or a hook needle.

7. An oscilloscope probe that is easy to replace and maintain according to claim 5, characterized in that: The electrical contact probe (4) is provided with a hook slot (18).

Images