Electric pencil for electrical equipment detection

Abstract

The utility model relates to the technical field of electrowork pens, and provides an electrowork pen for electrical equipment detection, which comprises a barrel body, a refill is detachably mounted in an inner cavity of the barrel body, an upper limiting groove and a lower limiting groove are formed in the middle of the barrel body, a circular ring is movably mounted in the middle of the barrel body, and limiting rings are fixedly mounted on the upper side and the lower side of the circular ring. Multiple limiting holes are formed in the outer surface of the circular ring, a circular block is fixedly installed in the middle of the outer surface of the barrel, a connecting plate is rotationally installed on the front side of the circular block, and a limiting block is fixedly installed at the bottom of the rear side of the connecting plate; according to the electric engineering pen for electrical equipment detection, through cooperative use of a circular ring structure and a refill structure, during work, a circular ring is rotated, a thread matched with the inner wall of the circular ring and formed in the outer surface of a refill is utilized, then the refill is controlled to move front and back, after movement, a connecting plate is rotated to enable a limiting block to move into an inner cavity of a limiting hole, and therefore the rotated circular ring is fixed; the length of the electrician refill can be simply and rapidly changed, and the use requirements of different detection places can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of electrician pens, and specifically relates to an electrician pen for detecting electrical equipment. Background Art

[0002] The electrician's pen is a commonly used electrician's tool. It can be used to determine the neutral line and the live line in the home lighting circuit, and can also be used to determine whether there is leakage in home appliances. It is an indispensable electrical equipment for electricians to detect circuits. However, in the actual use of the existing electrician's pen, the front end of the electrician's pen needs to be placed at the detection position to detect the position to be detected. When encountering a relatively narrow or insufficient distance, it is not conducive to detection. Since most of the existing electrician's pens do not have the function of replacing the pen tip, it may make it difficult to detect in a relatively narrow place.

[0003] After searching, the Chinese patent announcement number is CN215986243U, which discloses an electrician's pen for electrical equipment detection. In the patent, by pushing the pressing rod, the pressing rod pushes the T-shaped extrusion block, and the T-shaped extrusion block pushes the T-shaped limit block, so that the T-shaped limit block retracts into the inside of the horizontal slide groove, and the square slider is squeezed under the action of the first spring, and the square slider squeezes the electrician's pen core, so that the electrician's pen core is easy to replace, thereby solving the problem that most existing electrician's pens do not have the function of replacing the pen tip, which may cause difficulty in detection in a relatively narrow place;

[0004] However, in actual use of the above device, it can be seen from the accompanying drawings that the replacement electrician's pen refills stored in the storage tank are of the same size and length, which cannot meet the requirements of narrow or insufficient distance detection. At the same time, the method of replacing the electrician's pen refill is complicated and wastes working time. Utility Model Content

[0005] The utility model provides an electrician's pen for testing electrical equipment, which has the advantages of simply and quickly changing the length of the electrician's pen core to meet the needs of different testing locations, and solves the problem in the related art that the pen core cannot be quickly replaced, resulting in the inability to use it in a narrow or insufficiently spaced testing location in a timely manner.

[0006] The technical scheme of the utility model is as follows: an electrician pen for detecting electrical equipment comprises a barrel, a refill is detachably installed in the inner cavity of the barrel, two upper and lower limit grooves are provided in the middle of the barrel, a circular ring is movably installed in the middle of the barrel, limit rings are fixedly installed on the upper and lower sides of the circular ring, a plurality of limit holes are provided on the outer surface of the circular ring, a round block is fixedly installed in the middle of the outer surface of the barrel, a connecting plate is rotatably installed on the front side of the round block, a limit block is fixedly installed on the bottom of the rear side of the connecting plate, a barrel cover is detachably installed on the top of the barrel, a connecting shell is detachably installed on the top of the inner cavity of the barrel cover, a detection block is detachably installed on the inner cavity of the top of the barrel cover, a drum frame is movably installed on the outer surface of the barrel cover, a connecting wire is wound around the inner cavity of the drum frame, and a reset spring is fixedly installed on the outer surface of the drum frame.

[0007] Preferably, the circular ring is arranged in the area between the upper and lower limit grooves in the middle of the cylinder, and the shape of the outer surface of the limit ring matches the shape of the inner cavity of the limit groove, so that when in use, the limit ring and the limit groove are utilized to enable the circular ring to be movably installed in the middle of the cylinder.

[0008] Preferably, the inner wall of the ring is provided with a shape matching that of the outer surface of the pen core, and the bottom of the pen core is designed to be conical, so that when in use, the pen core is driven to move up and down by rotating the ring, thereby changing the length of the pen core extending from the front side of the barrel.

[0009] Preferably, the round block is arranged on the top of the circular ring, the connecting plate is constructed of plastic material, the limiting holes are evenly arranged on the outer surface of the circular ring, and the shape of the outer surface of the limiting block matches the shape of the inner cavity of the limiting hole. Therefore, when in use, the position of the limiting block can be changed by rotating the round block and the connecting plate. By matching the shape of the outer surface of the limiting block and the inner cavity of the limiting hole and the number of limiting holes, after the circular ring rotates, the limiting block moves into the inner cavity of the limiting hole to fix the position of the circular ring after rotation.

[0010] Preferably, the top of the outer surface of the barrel is provided with a thread matching the inner cavity side wall of the barrel cover, and the inner cavity side wall of the connecting shell is provided with a thread matching the top of the outer surface of the refill, so that when in use, the refill is inserted into the inner cavity of the barrel and assembled with the connecting shell by means of the thread, and then the barrel cover is assembled with the barrel.

[0011] Preferably, the detection block includes a battery and a detection module and connecting wires therebetween, so that when in use, the detachable design of the detection block facilitates rapid disassembly for subsequent maintenance.

[0012] Preferably, one end of the connecting wire wound on the outer surface of the drum frame is connected to the detection block, and the other end of the connecting wire wound on the outer surface of the drum frame is connected to the connection shell, so that when in use, the detection block and the connecting wire are used to connect the pen core.

[0013] Preferably, one end of the return spring is fixedly connected to the outer surface of the drum frame, and the other end of the return spring is fixedly connected to the outer surface of the drum cover, so that when in use, the connecting line is stretched to drive the drum frame to rotate, and the return spring is compressed at this time. When the external force disappears, under the action of the elastic force of the return spring, the drum frame automatically rotates in the opposite direction and resets, and automatically reels the connecting line.

[0014] The working principle and beneficial effects of the utility model are:

[0015] 1. The electrician's pen for detecting electrical equipment is used in combination with a ring structure and a core structure. When working, the ring is rotated, and the threads on the outer surface of the core that match the inner wall of the ring are used to control the forward and backward movement of the core. After moving, the connecting plate is rotated to move the limit block into the inner cavity of the limit hole, so as to fix the rotated ring, so as to achieve the effect of simply and quickly changing the length of the electrician's pen core to meet the use of different detection locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the front appearance of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance of the overall structure of the utility model from a top perspective;

[0019] Figure 3 It is a schematic diagram of the appearance of the overall structure of the utility model after being cut apart;

[0020] Figure 4 For this utility model Figure 3 A schematic diagram of the structure at A;

[0021] Figure 5 For this utility model Figure 3 Schematic diagram of the structure at point B.

[0022] In the figure: 1, cylinder; 2, refill; 3, limit groove; 4, circular ring; 5, limit ring; 6, limit hole; 7, round block; 8, connecting plate; 9, limit block; 10, cylinder cover; 11, connecting shell; 12, detection block; 13, drum frame; 14, connecting line; 15, reset spring. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 to Figure 5As shown, an electrician's pen for testing electrical equipment comprises a barrel 1, the inner cavity of the barrel 1 is detachably mounted with a pen core 2, the middle of the barrel 1 is provided with two upper and lower limit grooves 3, the middle of the barrel 1 is movably mounted with a ring 4, the inner wall of the ring 4 is provided with a shape matching the shape of the outer surface of the pen core 2, the bottom of the pen core 2 is designed as a cone, so that when in use, the pen core 2 is driven to move up and down by rotating the ring 4, thereby changing the length of the pen core 2 extending out of the front side of the barrel 1, and limit rings 5 ​​are fixedly mounted on the upper and lower sides of the ring 4, the ring 4 is arranged in the area between the upper and lower limit grooves 3 opened in the middle of the barrel 1, the shape of the outer surface of the limit ring 5 matches the shape of the inner cavity of the limit groove 3, so that when in use, the limit ring 5 and the limit groove 3 are utilized to make the ring 4 is movably installed in the middle of the cylinder 1, and a plurality of limiting holes 6 are provided on the outer surface of the circular ring 4. A circular block 7 is fixedly installed in the middle of the outer surface of the cylinder 1. A connecting plate 8 is rotatably installed on the front side of the circular block 7. A limiting block 9 is fixedly installed on the bottom of the rear side of the connecting plate 8. The circular block 7 is arranged on the top of the circular ring 4. The connecting plate 8 is made of plastic material. The limiting holes 6 are evenly provided on the outer surface of the circular ring 4. The shape of the outer surface of the limiting block 9 matches the shape of the inner cavity of the limiting hole 6. When in use, the position of the limiting block 9 is changed by rotating the circular block 7 and the connecting plate 8. The shape of the outer surface of the limiting block 9 and the inner cavity of the limiting hole 6 and the number of the limiting holes 6 are matched. After the circular ring 4 is rotated, the limiting block 9 is moved into the inner cavity of the limiting hole 6 to fix the position of the circular ring 4 after rotation. A cylinder cover 10 is detachably mounted on the top of the cylinder body 1, a connecting shell 11 is detachably mounted on the top of the inner cavity of the cylinder cover 10, a thread matching the inner cavity side wall of the cylinder cover 10 is provided on the top of the outer surface of the cylinder body 1, and a thread matching the top of the outer surface of the pen core 2 is provided on the inner cavity side wall of the connecting shell 11, so that when in use, the pen core 2 is inserted into the inner cavity of the cylinder body 1 and assembled with the connecting shell 11 by utilizing the thread, and then the cylinder cover 10 is assembled with the cylinder body 1, a detection block 12 is detachably mounted on the inner cavity of the top of the cylinder cover 10, a roller frame 13 is movably mounted on the outer surface of the cylinder cover 10, a connecting wire 14 is wound around the inner cavity of the roller frame 13, the detection block 12 includes a storage battery and a detection module as well as the connecting wires 14 between them, so that when in use, the detection block 12 is utilized The detachable design is convenient for quick disassembly during subsequent maintenance. One end of the connecting wire 14 wound on the outer surface of the drum frame 13 is connected to the detection block 12, and the other end of the connecting wire 14 wound on the outer surface of the drum frame 13 is connected to the connecting shell 11. When in use, the detection block 12 and the connecting wire 14 are used to connect the pen core 2. A reset spring 15 is fixedly installed on the outer surface of the drum frame 13. One end of the reset spring 15 is fixedly connected to the outer surface of the drum frame 13, and the other end of the reset spring 15 is fixedly connected to the outer surface of the drum cover 10. When in use, the connecting wire 14 is stretched to drive the drum frame 13 to rotate. At this time, the reset spring 15 is compressed. When the external force disappears, under the elastic force of the reset spring 15, the drum frame 13 automatically rotates in the opposite direction to reset, and the connecting wire 14 is automatically reeled up.

[0025] Working principle: When working, first insert the refill 2 from the bottom of the barrel 1, and use the matching threads on the outer surface of the refill 2 and the inner wall of the connecting shell 11 to fix the refill 2 and the connecting shell 11, and then use the matching threads on the top of the outer surface of the barrel 1 and the inner wall of the barrel cover 10 to quickly and correctly assemble the barrel 1 and the barrel cover 10. During the initial use, due to the detection environment and other reasons, it is necessary to extend the distance of the refill 2. At this time, first move the limit block 9 out of the limit hole 6 and rotate the connecting plate 8. At this time, the ring 4 can rotate, and then rotate the ring 4 again, through the threads starting from the inner wall of the ring 4 that match the outer surface of the refill 2, and then control the refill 2 to move toward the front side of the barrel 1 when the ring 4 rotates. After the refill 2 moves to the appropriate position, adjust the connecting plate 8 and the limit block 9 again so that the limit block 9 moves into the inner cavity of the limit hole 6, so as to fix the rotated ring 4 and prevent the refill 2 from moving during use.

[0026] In summary, compared with the general similar devices, the electrician's pen for testing electrical equipment has the advantages of simply and quickly changing the length of the electrician's pen core 2 to meet the needs of different testing locations.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrician's pen for testing electrical equipment, characterized in that: The invention comprises a barrel (1), wherein a refill (2) is detachably mounted in the inner cavity of the barrel (1), two upper and lower limit grooves (3) are provided in the middle of the barrel (1), a circular ring (4) is movably mounted in the middle of the barrel (1), limit rings (5) are fixedly mounted on both upper and lower sides of the circular ring (4), a plurality of limit holes (6) are provided on the outer surface of the circular ring (4), a round block (7) is fixedly mounted in the middle of the outer surface of the barrel (1), a connecting plate (8) is rotatably mounted on the front side of the round block (7), and the connecting plate (8) is rotatably mounted on the front side of the round block (7). 8) A limit block (9) is fixedly installed at the bottom of the rear side, a cylinder cover (10) is detachably installed at the top of the cylinder body (1), a connecting shell (11) is detachably installed at the top of the inner cavity of the cylinder cover (10), a detection block (12) is detachably installed at the top inner cavity of the cylinder cover (10), a drum frame (13) is movably installed on the outer surface of the cylinder cover (10), a connecting wire (14) is wound around the inner cavity of the drum frame (13), and a reset spring (15) is fixedly installed on the outer surface of the drum frame (13).

2. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: The circular ring (4) is arranged in the area between the upper and lower limit grooves (3) in the middle of the cylinder (1), and the shape of the outer surface of the limit ring (5) matches the shape of the inner cavity of the limit groove (3).

3. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: The inner wall of the circular ring (4) is provided with a shape matching the shape of the outer surface of the pen core (2), and the bottom of the pen core (2) is designed to be conical.

4. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: The circular block (7) is arranged on the top of the circular ring (4), the connecting plate (8) is constructed of a plastic material, the limiting holes (6) are evenly arranged on the outer surface of the circular ring (4), and the shape of the outer surface of the limiting block (9) matches the shape of the inner cavity of the limiting hole (6).

5. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: The top of the outer surface of the barrel (1) is provided with a thread matching the inner cavity side wall of the barrel cover (10), and the inner cavity side wall of the connecting shell (11) is provided with a thread matching the top of the outer surface of the pen core (2).

6. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: The detection block (12) comprises a storage battery and a detection module and connecting wires (14) therebetween.

7. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: One end of the connecting wire (14) wound around the outer surface of the drum frame (13) is connected to the detection block (12), and the other end of the connecting wire (14) wound around the outer surface of the drum frame (13) is connected to the connection shell (11).

8. The electrician's pen for testing electrical equipment according to claim 1, characterized in that: One end of the return spring (15) is fixedly connected to the outer surface of the drum frame (13), and the other end of the return spring (15) is fixedly connected to the outer surface of the drum cover (10).

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