An electrical testing pen for electrical equipment debugging and maintenance

Abstract

The utility model discloses a kind of electrical equipment commissioning and overhauling are measured electric pen, belong to measured electric pen field, including pen body, the detection end of the pen body is fixedly connected with insulating sleeve rod, the inside fixed connection of the pen body has detection rod, and another end of detection rod extends to the inside of insulating sleeve rod, the outside of the insulating sleeve rod movably connected with extension mechanism, and the output end fixedly connected with metal nib of extension mechanism, the rear end of metal nib extends to the inside of insulating sleeve rod, the utility model guarantees electrical equipment commissioning and overhauling, detection position deeper measured electric pen detection end can extend to detection position, or avoid detection space limitation to cause pen body to be unable to be perpendicular with detection position, cause metal nib to be unable to be inserted into detection position, secondly according to the adjustment metal nib orientation, always guarantee pen body display area orientation operator when detecting.

Description

Technical Field

[0001] This utility model relates to the field of test pens, specifically to a test pen for debugging and repairing electrical equipment. Background Technology

[0002] A test pen is an electrical tool used to test whether a wire is live. It contains a neon bulb; if the bulb lights up, it indicates that the wire is energized or is a live wire. The tip and tail of the test pen are made of metal, while the barrel is made of insulating material. When using a test pen, you must always touch the metal part at the tail end. Otherwise, because a circuit is not formed between the live conductor, the test pen, your body, and the ground, the neon bulb will not light up, leading to a false alarm that the conductor is not energized.

[0003] Electrical equipment debugging and maintenance requires the use of a test pen to test the connection points of the equipment. However, in the existing electrical equipment debugging and testing process, the test position is too deep or the space is limited so that the pen body cannot be perpendicular to the test position, making it impossible for the metal pen tip to be inserted into the test position. Operators need to disassemble some internal components of the electrical equipment to remove the obstruction to the test position. Therefore, we have proposed a test pen for electrical equipment debugging and maintenance to solve the above-mentioned problems. Summary of the Invention

[0004] Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a test pen for debugging and maintenance of electrical equipment. It solves the problem that in the existing process of debugging and testing electrical equipment, the test position is too deep or the space is limited so that the pen body cannot be perpendicular to the test position, which makes it impossible for the metal pen tip to be inserted into the test position. This requires the operator to disassemble some internal components of the electrical equipment to remove the obstruction to the test position.

[0005] Technical solution To solve the above problems, the present invention adopts the following technical solution.

[0006] A test pen for debugging and maintenance of electrical equipment includes a pen body, an insulating sleeve rod fixedly connected to the detection end of the pen body, a detection rod fixedly connected inside the pen body, and the other end of the detection rod extending into the interior of the insulating sleeve rod. A detection length extension mechanism is movably connected to the outside of the insulating sleeve rod, and a metal pen tip is fixedly connected to the output end of the detection length extension mechanism. The rear end of the metal pen tip extends into the interior of the insulating sleeve rod.

[0007] Furthermore, the detection length extension mechanism includes a connecting ring, an insulating cover, a control ring, and a fixing ring. A slide bar is fixedly connected to one end of the insulating cover, and the slide bar is annular. A groove is formed on the side of the connecting ring near the insulating cover, and the groove is annular. The slide bar and the groove are adapted to each other, and the insulating cover is movably connected to the connecting ring through the slide bar and the groove. The control ring is fixedly connected to the end of the insulating cover away from the control ring, and the fixing ring is located inside the control ring.

[0008] Furthermore, the outer side of the insulating sleeve rod is threaded, and the connecting ring is movably connected to the outer side of the insulating sleeve rod through the thread.

[0009] Furthermore, the fixing ring is fixed to the outside of the metal pen tip, and the metal pen tip is L-shaped. The cross-section of the fixing ring is U-shaped. The recess of the fixing ring is fixedly connected to the adjustment teeth in a ring array. The inside of the control ring is fixedly connected to the control teeth, and the control teeth and the adjustment teeth mesh with each other.

[0010] Furthermore, a connecting hole is provided at the front end of the insulating sleeve rod, and a limiting block is fixedly connected to the top end of the insulating sleeve rod. The limiting block is circular and is fixedly connected to the inner side of the top end of the connecting hole.

[0011] Furthermore, a guide post is fixedly connected to the end of the connecting hole away from the limiting block, and the guide post passes through the insulating sleeve rod and is fixedly connected to the end of the detection rod away from the pen body.

[0012] Furthermore, the rear end of the metal pen tip passes through the limiting block and extends into the interior of the connecting hole. A retaining ring is fixedly connected to the rear end of the metal pen tip. A guide hole is provided at one end of the metal pen tip inside the connecting hole. The guide hole is adapted to the guide post, and the front end of the guide post extends into the interior of the guide hole. A spring is sleeved on the outside of the guide post, and the spring is located directly behind the retaining ring.

[0013] Beneficial effects Compared with existing technologies, the advantages of this utility model are: This solution uses a rotating connecting ring driven by a thread to push the insulating cover towards the front end of the insulating sleeve rod. At this time, the insulating cover moves forward by pressing against the fixed ring through the control ring, and the metal pen tip extends forward with the insulating cover. Then, the insulating cover is held and rotated, and the control ring rotates in the same direction. This causes the control teeth to drive the fixed ring through the adjusting teeth, so that the rotation angle of the metal pen tip is consistent with that of the insulating cover. This helps to ensure that when the electrical equipment is being debugged and repaired, the testing end of the test pen can extend to the testing position when the testing position is deep, or to avoid the test space limitation that prevents the pen body from being perpendicular to the testing position, thus preventing the metal pen tip from being inserted into the testing position. Furthermore, by adjusting the orientation of the metal pen tip, it is always ensured that the pen body display area faces the operator during testing. In this design, when the metal pen tip is displaced, its rear end drives the retaining ring to slide inside the connecting hole. The spring reaction force acts on the retaining ring, and the guide core slides out from inside the metal pen tip through the guide hole. At this time, the metal pen tip slides out smoothly until the retaining ring hits the limit block. The metal pen tip slides out to its maximum length, which helps to ensure that the test pen's detection performance is normal and the detection value is accurate when adjusting the extension of the test pen's detection end. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional view of the connection structure of the insulating sleeve rod of this utility model; Figure 3 This is a schematic diagram of the detection length extension mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0015] Explanation of the labels in the diagram: 1. Pen body; 2. Insulating sleeve rod; 3. Detection rod; 4. Detection length extension mechanism; 401. Connecting ring; 402. Insulating cover; 403. Control ring; 404. Fixing ring; 5. Metal pen tip; 6. Slider; 7. Adjustment gear; 8. Control gear; 9. Connecting hole; 10. Limiting block; 11. Guide post; 12. Snap ring; 13. Guide hole; 14. Spring. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example 1

[0017] Please see Figures 1-4 A test pen for debugging and maintenance of electrical equipment includes a pen body 1, an insulating sleeve rod 2 fixedly connected to the detection end of the pen body 1, a detection rod 3 fixedly connected inside the pen body 1, and the other end of the detection rod 3 extending into the interior of the insulating sleeve rod 2. A detection length extension mechanism 4 is movably connected to the outside of the insulating sleeve rod 2, and a metal pen tip 5 is fixedly connected to the output end of the detection length extension mechanism 4. The rear end of the metal pen tip 5 extends into the interior of the insulating sleeve rod 2. Example 2

[0018] In view of the above embodiment 1, further description is provided, see reference. Figure 1 , Figure 2 , Figure 3 and Figure 4 The detection length extension mechanism 4 includes a connecting ring 401, an insulating cover 402, a control ring 403, and a fixing ring 404. A sliding strip 6, which is annular, is fixedly connected to one end of the insulating cover 402. A sliding groove, also annular, is formed on the side of the connecting ring 401 closest to the insulating cover 402. The sliding strip 6 and the sliding groove are matched, and the insulating cover 402 is movably connected to the connecting ring 401 via the sliding strip 6 and the sliding groove. The control ring 403 is fixedly connected to the end of the insulating cover 402 furthest from the control ring 404. The fixing ring 404 is located inside the control ring 403. The outer side of the insulating sleeve rod 2 is threaded, and the connecting ring 401 is movably connected to the outer side of the insulating sleeve rod 2 through the thread. The fixing ring 404 is fixed to the outer side of the metal pen tip 5, and the metal pen tip 5 is L-shaped. The cross section of the fixing ring 404 is U-shaped. The recess of the fixing ring 404 is fixedly connected to the adjusting teeth 7 in a ring array. The inside of the control ring 403 is fixedly connected to the controlling teeth 8, and the controlling teeth 8 and the adjusting teeth 7 mesh with each other.

[0019] By rotating the connecting ring 401 via the threaded drive, the insulating cover 402 is pushed towards the front end of the insulating sleeve rod 2. At this time, the insulating cover 402 moves forward against the fixing ring 404 through the control ring 403. Subsequently, the metal pen tip 5 extends forward with the insulating cover 402. Then, the insulating cover 402 is grasped and rotated. At this time, the control ring 403 rotates in the same direction, causing the control tooth 8 to drive the fixing ring 404 through the adjusting tooth so that the metal pen tip rotates at the same angle as the insulating cover 402. This helps to ensure that when the electrical equipment is debugged and repaired, the testing end of the test pen can extend to the testing position if the testing position is deep, or if the testing space is limited and the pen body 1 cannot be perpendicular to the testing position, causing the metal pen tip 5 to be unable to be inserted into the testing position. Furthermore, by adjusting the orientation of the metal pen tip 5, it is always ensured that the display area of ​​the pen body 1 faces the operator during testing. Example 3

[0020] In view of the above embodiments 1 and 2, further description is provided, please refer to... Figure 1 , Figure 2 and Figure 3The front end of the insulating sleeve rod 2 is provided with a connecting hole 9. The top end of the insulating sleeve rod 2 is fixedly connected to a limiting block 10, which is circular. The limiting block 10 is fixedly connected to the inner side of the top end of the connecting hole 9. The end of the connecting hole 9 away from the limiting block 10 is fixedly connected to a guide post 11. The guide post 11 passes through the insulating sleeve rod 2 and is fixedly connected to the end of the detection rod 3 away from the pen body 1. The rear end of the metal pen tip 5 passes through the limiting block 10 and extends into the interior of the connecting hole 9. The rear end of the metal pen tip 5 is fixedly connected to a retaining ring 12. The end of the metal pen tip 5 located inside the connecting hole 9 is provided with a guide hole 13. The guide hole 13 is adapted to the guide post 11, and the front end of the guide post 11 extends into the interior of the guide hole 13. A spring 14 is sleeved on the outside of the guide post 11, and the spring 14 is located directly behind the retaining ring 12.

[0021] When the metal pen tip 5 is displaced, its rear end drives the retaining ring 12 to slide inside the connecting hole 9. The spring 14 exerts a reaction force on the retaining ring 12, and the guide core 11 slides out from inside the metal pen tip 5 through the guide hole 13. At this time, the metal pen tip 5 slides out smoothly until the retaining ring 12 presses against the limiting block 10. The metal pen tip 5 slides out to its maximum length, which helps to ensure that the test pen's detection performance is normal and the detection value is accurate when adjusting the extension of the test pen's detection end.

[0022] Based on the above embodiments 1, 2, and 3, the working principle is further described; when debugging and repairing electrical equipment, if the detection position is too deep or the space is limited and the pen body 1 cannot be perpendicular to the detection position, causing the metal pen tip 5 to be unable to be inserted into the detection position, the rotating connecting ring 401 is driven by the thread to push the insulating cover 402 to move towards the front end of the insulating sleeve rod 2. At this time, the insulating cover 402 moves forward by pressing against the fixing ring 404 through the control ring 403, and the metal pen tip 5 extends forward with the insulating cover 402. The insulating cover 402 then rotates, and the control ring 403 rotates in the same direction, causing the control tooth 8 to drive the fixed ring 404 through the adjusting tooth so that the metal pen tip 5 rotates at the same angle as the insulating cover 402. When the metal pen tip 5 is displaced, its rear end drives the retaining ring 12 to slide inside the connecting hole 9. The spring 14 reacts to the retaining ring 12, and the guide core 11 slides out from inside the metal pen tip 5 through the guide hole 13. At this time, the metal pen tip 5 slides out smoothly until the retaining ring 12 hits the limiting block 10, and the metal pen tip 5 slides out the longest length.

[0023] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A test pen for debugging and maintenance of electrical equipment, comprising a pen body (1), characterized in that: An insulating sleeve rod (2) is fixedly connected to the detection end of the pen body (1). A detection rod (3) is fixedly connected inside the pen body (1), and the other end of the detection rod (3) extends into the interior of the insulating sleeve rod (2). A detection length extension mechanism (4) is movably connected to the outside of the insulating sleeve rod (2), and a metal pen tip (5) is fixedly connected to the output end of the detection length extension mechanism (4). The rear end of the metal pen tip (5) extends into the interior of the insulating sleeve rod (2). The detection length extension mechanism (4) includes a connecting ring (401), an insulating cover (402), a control ring (403), and a fixing ring (404). One end of the insulating cover (402) is fixedly connected to a slide bar (6), and the slide bar (6) is annular. The connecting ring (401) has a groove on the side near the insulating cover (402), and the groove is annular. The slide bar (6) and the groove are adapted to each other, and the insulating cover (402) is movably connected to the connecting ring (401) through the slide bar (6) and the groove. The control ring (403) is fixedly connected to the end of the insulating cover (402) away from the control ring (403), and the fixing ring (404) is located inside the control ring (403).

2. The test pen for debugging and maintenance of electrical equipment according to claim 1, characterized in that: The outer side of the insulating sleeve rod (2) is threaded, and the connecting ring (401) is movably connected to the outer side of the insulating sleeve rod (2) through the thread.

3. A test pen for debugging and maintenance of electrical equipment according to claim 1, characterized in that: The fixing ring (404) is fixed to the outside of the metal pen tip (5), and the metal pen tip (5) is L-shaped. The cross section of the fixing ring (404) is U-shaped. The recess of the fixing ring (404) is fixedly connected to the adjustment teeth (7) in a ring array. The inside of the control ring (403) is fixedly connected to the control teeth (8), and the control teeth (8) and the adjustment teeth (7) mesh with each other.

4. A test pen for debugging and maintenance of electrical equipment according to claim 1, characterized in that: The front end of the insulating sleeve rod (2) is provided with a connection hole (9), and the top end of the insulating sleeve rod (2) is fixedly connected to a limiting block (10), and the limiting block (10) is circular. The limiting block (10) is fixedly connected to the inner side of the top end of the connection hole (9).

5. A test pen for debugging and maintenance of electrical equipment according to claim 4, characterized in that: The end of the connecting hole (9) away from the limiting block (10) is fixedly connected to a guide post (11), and the guide post (11) passes through the insulating sleeve rod (2) and is fixedly connected to the end of the detection rod (3) away from the pen body (1).

6. A test pen for debugging and maintenance of electrical equipment according to claim 1, characterized in that: The rear end of the metal pen tip (5) passes through the limiting block (10) and extends into the interior of the connecting hole (9). The rear end of the metal pen tip (5) is fixedly connected to a retaining ring (12). A guide hole (13) is provided at one end of the metal pen tip (5) located inside the connecting hole (9). The guide hole (13) is adapted to the guide post (11), and the front end of the guide post (11) extends into the interior of the guide hole (13). A spring (14) is sleeved on the outside of the guide post (11), and the spring (14) is located directly behind the retaining ring (12).

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