Safety test pencil

Abstract

The utility model discloses a safe test pencil, which relates to the technical field of test pencils, and comprises a main body, the front side and the rear side of the main body are respectively provided with a connecting rod, the top of the main body is clamped with a clamp ring plate, the middle part of the top end of the clamp ring plate is provided with an end cap, and the top of the end cap is fixedly provided with a data display. The upper portion of the connecting rod is sleeved with a hanging rope, and a contraction cavity is formed in the lower portion of the inner side of the connecting rod. According to the utility model, through the arrangement of the fixed lantern ring, the folding sleeve and the telescopic rod, the probe is protected by the protection cavity formed by the fixed lantern ring and the folding sleeve when the probe is not used, and when the probe is used, the telescopic rod is pulled upwards to drive the folding sleeve to fold through the fixed lantern ring to expose the lower part of the probe, so that electricity testing can be carried out; the probe can be conveniently protected in the using process, the probe is prevented from being eroded by external stains, the service life of the probe is prolonged, and workers are conveniently prevented from being scratched by the sharp probe in the carrying process of the test pencil.

Description

Technical Field

[0001] The utility model relates to the technical field of electric test pens, in particular to a safety electric test pen. Background Art

[0002] The electric tester (also known as an electric pen) is one of the common tools used by electricians to determine whether an object is charged. Its test range is between 60 and 500V. It has a pen type and a screwdriver type. It is composed of a neon tube (commonly known as a neon bulb), a resistor, a spring, etc. When used,

[0003] The charged body forms a potential difference between the tester, the human body and the earth, generating an electric field. The neon tube in the tester will glow under the action of the electric field. The tester is a tool used to distinguish the live wire and the neutral wire.

[0004] Patent announcement number CN220171141U discloses a safety test pen. By removing the pen cover, the metal probe can monitor the current. When the test pen is carried daily, the pen cover is connected to the frame to protect the probe.

[0005] The electric pen can be hung on the pocket of a coat through the hook on the outer wall of the pen cover, so that the electric pen is easy to carry.

[0006] The electric pen in the above-mentioned comparative document has the following shortcomings: the protective pen cover on the electric pen requires the worker to use both hands during use, one hand holding the pen and the other hand holding the pen cover. If the worker's other hand holds other tools, it is more inconvenient to use. Or when the worker climbs to a high place, if both hands are occupied, the worker can easily fall from the ladder. When the hook on the pen cover is hung on the worker's clothes, the worker needs to use one hand to fix the clothes in the hanging position and then hook them. Otherwise, it is difficult to hook all the clothes at once with one hand. Moreover, the electric pen in the comparative document cannot read the detected current data and can only detect whether there is current, which is a relatively simple function. Utility Model Content

[0007] The purpose of the utility model is to solve the following shortcomings of the electric pen in the above-mentioned comparative document: the protective pen cover on the electric pen requires the staff to occupy two hands during use, one hand holding the pen and the other hand holding the pen cover. If the staff member's other hand holds other tools, it is more troublesome to use; or when the staff member climbs to a high place, if both hands are occupied, the staff member is likely to fall from the ladder; and when the hook on the pen cover is hung on the staff member's clothes, the staff member needs to occupy one hand to fix the clothes to be hung at the position and then hook them, otherwise it is difficult to hook them all at once with one hand; and the electric pen in the comparative document cannot read the detected current data and can only detect whether there is current, which has a relatively single function, thereby providing a safety test pen.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety tester, comprising a main body, a connecting rod is provided on the front and rear sides of the main body, a clamp ring plate is clamped on the top of the main body, an end cap is provided in the middle of the top of the clamp ring plate, a data display is fixed on the top of the end cap, a hanging rope is sleeved on the top of the connecting rod, a contraction cavity is opened at the lower inner side of the connecting rod, a guide slide bar is provided in the middle of the inner side of the contraction cavity, a return spring is provided on the outer side of the guide slide bar, a contraction rod is provided below the return spring, the top of the contraction rod is slidably connected to the inner side of the contraction cavity, a fixing ring is fixedly connected to the inner surface below the contraction rod, a folding sleeve is fixedly connected to the top of the fixing ring, a docking cap is fixedly connected to the top of the folding sleeve, a threaded clamp ring column is clamped in the inner cavity of the docking cap, and the top of the threaded clamp ring column is fixedly connected to the bottom of the main body.

[0009] As a further solution of the utility model: a lighting lamp bead is provided on both the front and rear sides of the bottom of the main body, and the lighting lamp bead is electrically connected to the data display.

[0010] As a further solution of the utility model: an auxiliary spring is provided in the middle of the bottom end of the end cap, and a neon tube is provided at the bottom end of the auxiliary spring.

[0011] As a further solution of the utility model: a resistor is arranged at the bottom end of the neon tube, and a probe is clamped at the bottom end of the resistor.

[0012] As a further solution of the utility model: a plurality of anti-skid rubber arc blocks are evenly distributed on both left and right ends above the outer surface of the main body, and a lighting switch is provided at one end of the top of the data display.

[0013] As a further solution of the utility model: a guide column cavity is opened in the wall cavity of the retractable rod, and the size of the outer side of the guide slide rod matches the size of the inner side of the guide column cavity.

[0014] As a further solution of the utility model: the top of the guide slide rod is fixedly connected to the middle of the top of the contraction cavity, and the bottom of the guide slide rod is slidably connected to the contraction rod through a guide column cavity.

[0015] Compared with the prior art, the utility model has the following beneficial effects: it is convenient to protect the probe during use, prevent external stains from corroding the probe and increase the service life of the probe, it is convenient to carry the test pen, it is convenient to prevent the sharp probe from scratching the staff during the carrying of the test pen, it is convenient to detect and read the detected current, and it is convenient to illuminate the position to be detected when the light is dim.

[0016] 1. Through the fixed ring, folding sleeve and retractable rod, when not in use, the protective cavity composed of the fixed ring and the folding sleeve protects the probe. When in use, the retractable rod is pulled up to drive the folding sleeve to fold through the fixed ring to expose the bottom of the probe for electrical testing. It is convenient to protect the probe during use, prevent external stains from corroding the probe, and increase the service life of the probe. It is convenient to prevent the sharp probe from scratching the staff when carrying the test pen.

[0017] 2. The hanging rope can be hung around the neck of the staff through the set hanging rope. When in use, the hanging test pen can be directly held, which makes it easy to carry the test pen.

[0018] 3. Through the set data display and lighting lamp beads, the current data detected by the test pen will be displayed on the display screen on the data display. When the light is dim, turn on the switch of the lighting lamp beads, and the light emitted by the lighting lamp beads will illuminate the dim environment, making it easier to detect and read the detected current, and to illuminate the location to be detected when the light is dim. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the side view of the utility model;

[0021] Figure 3 For this utility model Figure 2 The structural diagram of the enlarged view of the middle A part; Figure 4 It is a structural schematic diagram of a three-dimensional connection diagram of a retractable rod and a fixed collar according to the utility model.

[0022] In the figure: 1. main body; 2. connecting rod; 3. clamp ring plate; 4. end cap; 5. data display; 6. hanging rope; 7. anti-slip rubber arc block; 8. retractable rod; 9. folding sleeve; 10. fixed ring; 11. probe; 12. docking cap; 13. lighting lamp bead; 14. reset spring; 15. retracting chamber; 16. guide slide rod; 17. auxiliary spring; 18. neon tube; 19. resistor; 20. threaded clamp ring column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in 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 in 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 4 In the embodiment of the utility model, a safety test pencil comprises a main body 1, a connecting rod 2 is provided on both the front and rear sides of the main body 1, a clamp ring plate 3 is clamped on the top of the main body 1, an end cap 4 is provided in the middle of the top of the clamp ring plate 3, a data display 5 is fixed on the top of the end cap 4, a hanging rope 6 is sleeved on the top of the connecting rod 2, a contraction cavity 15 is provided at the lower part of the inner side of the connecting rod 2, a guide slide bar 16 is provided in the middle part of the inner side of the contraction cavity 15, a return spring 14 is provided on the outer side of the guide slide bar 16, a contraction rod 8 is provided below the return spring 14, the top of the contraction rod 8 is slidably connected to the inner side of the contraction cavity 15, a fixing ring 10 is fixedly connected to the inner surface of the lower part of the contraction rod 8, and the top of the fixing ring 10 is fixedly connected to the inner surface of the lower part of the contraction rod 8. A folding sleeve 9 is fixedly connected, and a docking cap 12 is fixedly connected to the top of the folding sleeve 9. A threaded clamp ring column 20 is clamped in the inner cavity of the docking cap 12. The top of the threaded clamp ring column 20 is fixedly connected to the bottom of the main body 1. A guide column cavity is opened in the wall cavity of the contraction rod 8. The size of the outer side of the guide slide rod 16 matches the size of the inner side of the guide column cavity. The top of the guide slide rod 16 is fixedly connected to the middle part of the top of the contraction cavity 15. The lower part of the guide slide rod 16 is slidably connected to the contraction rod 8 through the guide column cavity. An auxiliary spring 17 is provided in the middle part of the bottom end of the end cap 4, and a neon tube 18 is provided at the bottom end of the auxiliary spring 17. A resistor 19 is provided at the bottom end of the neon tube 18, and a probe 11 is clamped at the bottom end of the resistor 19.

[0025] In this embodiment: when carrying, the test pen is carried to the designated position by hanging the hanging rope 6 on the neck of the staff. When testing electricity, the test pen is held on the anti-skid rubber arc block 7, and one end of the test pen probe 11 is placed at the position to be tested. The protective shell provided on the downward pressing hoop test area will push the fixed ring 10 to slide steadily in the direction of the main body 1 along the contraction cavity 15 and the guide slide bar 16 under the restriction of the contraction rod 8, so that the bottom of the probe 11 slides into the hole to be tested while being exposed. If there is current at the position to be tested, the current enters the resistor 19 through the detection head, and enters the neon tube 18 and the auxiliary spring 17 in turn through the resistor 19. The detected current enters the data display 5 through the electrical connection, and the detected current is displayed on the display screen provided on the data display 5;

[0026] In addition, the staff can also press the thumb onto the connecting rod 2, and then clamp the index finger under the pushing frame fixed on the outer side above the retracting rod 8, and then use the thumb to pull the pushing frame to slide upward on the connecting rod 2, thereby driving the retracting rod 8 connected to the pushing frame to slide upward, and the upward sliding retracting rod 8 will drive the fixed ring 10 to slide upward to push the folding sleeve 9 so that the folding sleeve 9 is folded, exposing the bottom of the probe 11, and touching the exposed probe 11 to the position to be measured.

[0027] Please refer to Figure 1 A lighting lamp bead 13 is provided on both the front and rear sides of the bottom of the main body 1, and the lighting lamp bead 13 is electrically connected to the data display 5. A plurality of anti-slip rubber arc blocks 7 are evenly distributed on the left and right ends above the outer surface of the main body 1, and a lighting switch is provided at one end of the top of the data display 5.

[0028] In this embodiment: when the location for measuring electricity is in a dimly lit environment, turn on the lighting switch of the lighting bead 13, and then the light emitted by the lighting bead 13 illuminates the dim environment. When in use, the staff's hands are gripped on the anti-slip rubber arc block 7, and the gaps between the anti-slip rubber arc blocks 7 clamp the gripping fingers.

[0029] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety tester, comprising a main body (1), characterized in that: A connecting rod (2) is provided on both the front and rear sides of the main body (1); a clamp ring plate (3) is clamped on the top of the main body (1); an end cap (4) is provided in the middle of the top of the clamp ring plate (3); a data display (5) is fixed on the top of the end cap (4); a hanging rope (6) is sleeved on the top of the connecting rod (2); a contraction cavity (15) is provided at the bottom of the inner side of the connecting rod (2); a guide slide rod (16) is provided in the middle of the inner side of the contraction cavity (15); a return spring (14) is provided on the outer side of the guide slide rod (16); A retractable rod (8) is provided below the return spring (14), the top of the retractable rod (8) is slidably connected to the inner side of the retractable cavity (15), a fixed collar (10) is fixedly connected to the inner surface below the retractable rod (8), a folding sleeve (9) is fixedly connected to the top of the fixed collar (10), a docking cap (12) is fixedly connected to the top of the folding sleeve (9), a threaded clamp ring column (20) is clamped in the inner cavity of the docking cap (12), and the top of the threaded clamp ring column (20) is fixedly connected to the bottom of the main body (1).

2. A safety test pencil according to claim 1, characterized in that: A lighting lamp bead (13) is provided on both the front and rear sides of the bottom of the main body (1), and the lighting lamp bead (13) is electrically connected to the data display (5).

3. A safety tester according to claim 1, characterized in that: An auxiliary spring (17) is provided at the middle of the bottom end of the end cap (4), and a neon tube (18) is provided at the bottom end of the auxiliary spring (17).

4. A safety test pencil according to claim 3, characterized in that: A resistor (19) is provided at the bottom end of the neon tube (18), and a probe (11) is clamped at the bottom end of the resistor (19).

5. A safety test pencil according to claim 1, characterized in that: A plurality of anti-slip rubber arc blocks (7) are evenly distributed on both left and right ends above the outer surface of the main body (1), and a lighting switch is provided at one end of the top of the data display (5).

6. A safety tester according to claim 1, characterized in that: A guide column cavity is provided in the wall cavity of the retractable rod (8), and the size of the outer side of the guide slide rod (16) matches the size of the inner side of the guide column cavity.

7. A safety tester according to claim 6, characterized in that: The top of the guide slide bar (16) is fixedly connected to the middle of the top of the contraction cavity (15), and the bottom of the guide slide bar (16) is slidably connected to the contraction rod (8) via a guide column cavity.

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