Test pencil with replaceable tool bit

Abstract

The test pencil comprises a shell, an illuminating lamp, a bidirectional tool bit and a positioning mechanism, the illuminating lamp is arranged at the bottom of the shell, the positioning mechanism is arranged in the bottom end of the shell, the bidirectional tool bit is detachably fixed with the shell through the positioning mechanism, a hexagonal column is arranged in the middle of the bidirectional tool bit, and the bidirectional tool bit is arranged in the hexagonal column. The two ends of the bidirectional tool bit are tool bits of different specifications, and the positioning mechanism is provided with a conical sleeve, a mounting shell, a magnet and a conductive spring. The bidirectional tool bits are detachably fixed through the positioning mechanism, and the tool bits of different models can be detached and replaced when needing to be used, so that the tool can be suitable for different use scenes, and the number of carried tools is reduced; the lighting lamp is arranged at the bottom of the shell, so that other lighting tools do not need to be used for assistance when the test pencil is operated for detection, and the purpose of convenient detection and use is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of test pen, especially to a replaceable test pen. BACKGROUND

[0002] The test pen is also called test pen, and is a kind of electrician tool, which is used to test whether the wire is electrified.The existing test pen has the function of loosening the wire screw when testing the line connection point in the electric box, so as to ensure that the connection point does not fall off and cause the line to be disconnected.At present, the bit of the test pen is not replaceable, and only a single specification screw can be loosened during use, and a screwdriver is needed to loosen other types of screws, and a lighting device needs to be carried in a place with insufficient light to prevent the test pen from being touched by mistake, thereby causing a large number of tools to be carried during line maintenance.Therefore, in order to solve the above problems, a replaceable test pen is designed. SUMMARY

[0003] In view of the shortcomings of the existing test pen, the utility model aims to provide a replaceable test pen with replaceable bits, lighting function and other advantages.

[0004] To achieve the above purpose, the utility model adopts one technical scheme: a replaceable test pen, which comprises a shell, a lighting lamp, a bidirectional bit and a positioning mechanism, the lighting lamp is arranged at the bottom of the shell, the inside of the bottom end of the shell is provided with the positioning mechanism, the bidirectional bit is detachably fixed with the shell through the positioning mechanism, the middle part of the bidirectional bit is a hexagonal column, the two ends of the bidirectional bit are bits of different specifications, the positioning mechanism comprises a conical sleeve, a mounting shell, a magnet and a conductive spring, the mounting shell is arranged in the inside of the bottom end of the shell, the inside of the mounting shell is provided with an axially extending hexagonal groove, the inside of one end of the mounting shell is provided with a magnet, the middle part of the hexagonal column of the bidirectional bit is embedded in the hexagonal groove in the inside of the mounting shell and is attracted by the magnet, the other end of the mounting shell extends out of the shell and is provided with a plurality of conical contraction petals distributed at equal angles, the conical contraction petals and the mounting shell are further provided with a threaded part, the conical sleeve is rotatably fixed with the mounting shell through the threaded part, the conical contraction petals are compressed and contracted by the conical sleeve to fix the bidirectional bit, and the conductive spring is arranged on the other side of the magnet to conduct current.

[0005] Preferably, the top end of the shell is provided with a battery cover for mounting a battery, and the outer end face of the battery cover is further provided with a pen buckle.

[0006] Preferably, the middle part of the shell is further provided with a display screen for displaying test data.

[0007] Preferably, the shell is further provided with a plurality of waterproof keys for switching data on both sides of the display screen.

[0008] Preferably, the shell and the rear shell also have a circuit board between them, and one end of the conductive spring is fixed to the circuit board;

[0009] Preferably, the shell and the battery cover outer surface also have anti-skid ribs;

[0010] The utility model discloses the beneficial effect is: 1, through the positioning mechanism detachable fixed two -way knife head, when needing to use different model knife head can carry out the disassembly replacement, thereby can be applicable to different use scene and reduce the carrying number of tool, 2, through setting up the illuminating lamp at the bottom of the shell, make when operating the detection of the megohmmeter, need not use other lighting tool auxiliary, thereby reach the purpose of convenient detection use. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is three-dimensional structure view of the utility model;

[0012] Fig. 2 It is three-dimensional view of two -way knife head and positioning mechanism connection state of the utility model;

[0013] Fig. 3 It is three-dimensional structure view of two -way knife head of the utility model;

[0014] Fig. 4 It is three-dimensional structure view of installation shell. DETAILED DESCRIPTION

[0015] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is more clearly and explicitly defined.

[0016] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] In addition, it should also be noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "providing", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] Please refer toFigs. 1 to 4 The utility model embodiment includes:

[0019] A replaceable electric testing pen, comprising a shell 1, an illuminating lamp 2, a two-way tool bit 3 and a positioning mechanism 4, the illuminating lamp 2 is arranged at the bottom of the shell 1, the bottom end inside the shell 1 is equipped with the positioning mechanism 4, the two-way tool bit 3 is detachably fixed through the positioning mechanism 4 and the shell 1, the middle part of the two-way tool bit 3 is a hexagonal column 31, the two ends of the two-way tool bit 3 are tool bits of different specifications, the positioning mechanism 4 has a conical sleeve 41, a mounting shell 42, a magnet 43 and a conductive spring 44, the mounting shell 42 is arranged at the bottom end inside the shell 1, the inside of the mounting shell 42 has an axially extending hexagonal groove 421, one end of the inside of the mounting shell 42 has the magnet 43, the middle part hexagonal column 31 of the two-way tool bit 3 is embedded in the inside hexagonal groove 421 of the mounting shell 42 and is attracted by the magnet 43, the other end of the mounting shell 42 extends out of the shell 1 and is equipped with a plurality of conical contraction petals 422 of equal angle distribution, the conical contraction petals 422 and the mounting shell 42 also have a threaded part 423 between them, the conical sleeve 41 is screwed and fixed through the threaded part 423 and the mounting shell 42, the conical contraction petals 422 are compressed and folded in by the conical sleeve 41 to fix the two-way tool bit 3, the conductive spring 44 is arranged on the other side of the magnet 43 for conducting current;

[0020] The top end of the shell 1 is equipped with a battery cover 5 for mounting a battery, and the outer end face of the battery cover 5 also has a pen buckle;

[0021] The middle part of the shell 1 also has a display screen 6 for displaying test data;

[0022] The shell 1 also has a plurality of waterproof keys 7 for switching data on both sides corresponding to the display screen 6;

[0023] The shell 1 and the rear shell 1 also have a circuit board between them, and one end of the conductive spring 44 is fixed with the circuit board for detecting electric shock;

[0024] The outer surface of the shell 1 and the battery cover 5 also has an anti-skid rib;

[0025] Through the above setting, in the actual working process, the specific working principle is as follows:

[0026] When the tool bit needs to be replaced, firstly, the conical sleeve 41 is unscrewed from the threaded part 423 of the mounting shell 42, at this time the conical contraction petals 422 are no longer compressed by the conical sleeve 41, the bidirectional tool bit 3 can be removed axially from the hexagonal groove 421 inside the mounting shell 42, then the bidirectional tool bit 3 is inserted into the hexagonal groove 421 inside the mounting shell 42 after being reversed, after the insertion, the conical sleeve 41 is screwed and fixed at the bottom of the mounting shell 42, so that the magnet 43 attracts the bidirectional tool bit 3, at this time the conical contraction petals 422 are compressed by the conical sleeve 41, thereby fixing the bidirectional tool bit 3, so as to complete the replacement of the tool bit;

[0027] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A replaceable blade tester, characterized in that, Including shell, lighting lamp, two-way cutter head and positioning mechanism, the lighting lamp is arranged at the bottom of the shell, the bottom end of the shell is internally provided with the positioning mechanism, the two-way cutter head is detachably fixed through the positioning mechanism and the shell, the middle part of the two-way cutter head is a hexagonal column, the two ends of the two-way cutter head are cutter heads of different specifications, the positioning mechanism has a conical sleeve, a mounting shell, a magnet and a conductive spring, the mounting shell is arranged at the bottom end of the shell, the mounting shell has an axially extending hexagonal groove in the inside, the mounting shell has a magnet in the inside of one end, the middle part of the two-way cutter head is embedded in the hexagonal groove in the inside of the mounting shell and is attracted by the magnet, the other end of the mounting shell extends out of the shell and is provided with a plurality of conical contraction petals distributed at equal angles, the conical contraction petals and the mounting shell are further provided with threaded portions, the conical sleeve is rotatably fixed through the threaded portions and the mounting shell, the conical contraction petals are compressed and folded by the conical sleeve to fix the two-way cutter head, and the conductive spring is arranged on the other side of the magnet for conducting current.

2. The replaceable blade electrical tester according to claim 1, wherein, The top end of the shell is provided with a battery cover for mounting a battery, and the outer end face of the battery cover is further provided with a pen buckle.

3. The replaceable blade electrical tester according to claim 1, wherein, The middle part of the shell is further provided with a display screen for displaying test data.

4. The replaceable blade electrical tester of claim 1, wherein: The shell is further provided with a plurality of waterproof keys for switching data on both sides corresponding to the display screen.

5. The replaceable blade electrical tester of claim 1, wherein: The shell and the rear shell are further provided with a circuit board, and one end of the conductive spring is fixedly connected with the circuit board.

6. The replaceable blade electrical tester of claim 1, wherein, The outer surface of the shell and the battery cover is further provided with an anti-skid convex rib.

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