Replaceable multimeter pen tip without damaging original structure

Abstract

The utility model provides a replaceable multimeter pen tip without damaging an original structure, and belongs to the field of multimeters. Comprising a pen point body which is divided into a pen point part and a containing part. An opening is formed in one end of the containing part, the containing part is of a cylindrical structure, and a containing cavity is formed in the containing part and used for containing an original universal meter pen; the diameter of the pen point body is gradually reduced from the containing part to the pen point part, and a fixing device is arranged on the outer wall of the containing part. According to the utility model, any structure of the original meter pen is not damaged, the installation is simple, the disassembly is convenient, and the pen point of the replaced meter pen is good in contact and does not loosen or shake; and measured data are accurate.

Description

Technical Field

[0001] The utility model relates to the field of multimeters, in particular to a replaceable pen tip of a multimeter which does not damage the original structure. Background Art

[0002] In the process of electrical calibration, measurement, and maintenance, the multimeter probe is a key component for transmitting signals, an important component of the multimeter, and a key component that affects test data. In the use of traditional multimeter pens, when the probe tip contacts the object being measured, the conductive parts of the object being measured are affected by oxidation and other attachments. To ensure good contact, testers often use the probe tip instead of a screwdriver to slide back and forth on the contact surface. Over time, the probe tip will wear more seriously. If the probe tip is not sharp, it will cause poor contact or data jumps. In order to reduce measurement errors, some testers will polish the probe tip, but in order to reduce contact resistance, the probe tip and pen line of the original structure are made of copper-containing materials, which are softer. For circuit boards sprayed with insulating paint, insufficient force will cause inaccurate measurement results, and excessive force will cause the probe tip to slide and cause a short circuit.

[0003] Some maintenance staff are often equipped with multiple test pens, but most of them are not original. In order to ensure good contact and prevent oxidation, the plugs between the test pens and the multimeter are even gold-plated when high-end original multimeters are equipped with test pens. In this way, the price of the multimeter pens will be greatly increased. In order to measure the SMD components, CPU and other circuit board-intensive places on the circuit board, when the maintenance personnel solder a pin or a sharp object on the pen tip, the high temperature will damage the glue injection or insulation part, which will damage the structure of the original multimeter pens. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a multimeter probe tip that can be replaced without damaging the original structure. It can not damage any structure of the original probe, and is simple to install and easy to disassemble, so that the replaced probe tip has good contact, is not loose, and does not shake; and the measurement data is accurate.

[0005] In order to solve the above technical problems, the utility model provides a replaceable multimeter pen tip without damaging the original structure, comprising a pen tip body, wherein the pen tip body is divided into a pen tip part and a receiving part; an opening is provided at one end of the receiving part, and the receiving part is a cylindrical structure, and a receiving cavity is provided inside thereof for loading the original multimeter pen;

[0006] The diameter of the nib body from the accommodating part to the nib part gradually decreases, and a fixing device is provided on the outer wall of the accommodating part.

[0007] Furthermore, the shape of the accommodating cavity is cylindrical.

[0008] Furthermore, a plurality of grooves are provided on the side wall of the accommodating cavity.

[0009] Furthermore, a plurality of grooves are provided on the side wall of the accommodating cavity, 3 mm away from the pen tip portion and toward the open end.

[0010] Furthermore, the number of the slots is 4.

[0011] Furthermore, the groove is an axisymmetric structure, and the side wall of the groove and its axis form an angle; the axis of the groove is arranged parallel to the axis of the accommodating cavity.

[0012] Furthermore, the angle is 3°.

[0013] Furthermore, the fixing device includes a screw and a screw buckle, which are threadedly connected to fix the inserted original test lead.

[0014] Furthermore, insulating glue is attached to the outside of the screw.

[0015] Furthermore, the pen tip is made of a pointed, wear-resistant and conductive material.

[0016] The utility model provides a replaceable multimeter pen tip without damaging the original structure, and has the following beneficial effects:

[0017] By gradually reducing the diameter from the receiving part to the pen tip part of the pen tip body, the original multimeter probe inserted into the new probe can be better fixed;

[0018] By fastening the outer wall of the accommodating part with inclined screws and opening a plurality of grooves on the side wall of the accommodating cavity, the original multimeter probe can be better fixed, so that it does not loosen or shake, has good contact, and measures accurate data. It is suitable for replacing the pen tips of various multimeter probes.

[0019] The new test lead tip is made of a pointed, wear-resistant and conductive material, which enables it to have the advantage of precise positioning when measuring circuit board wiring and surface mount components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a traditional multimeter probe;

[0021] Figure 2 This is a schematic structural diagram of a multimeter pen tip that can be replaced without damaging the original structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the internal structure of the accommodation part of the utility model;

[0023] Figure 4It is an enlarged side view schematic diagram of the position of the groove provided in the accommodation cavity of the utility model;

[0024] Figure 5 It is an enlarged schematic diagram of the groove provided in the accommodation cavity of the utility model;

[0025] Reference figures: 1. nib part; 2. accommodating part; 3. screw; 4. groove; 5. accommodating cavity. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to better understand the purpose, structure and function of the utility model, the utility model is further described in detail below with reference to the accompanying drawings, which is a replaceable multimeter pen tip that does not damage the original structure.

[0031] Embodiment 1:

[0032] like Figures 2 to 4As shown, the utility model provides a replaceable multimeter pen tip without damaging the original structure, including a pen tip body, wherein the pen tip body is divided into a pen tip part 1 and a receiving part 2; an opening is provided at one end of the receiving part 2, and the receiving part 2 is a cylindrical structure, and a receiving cavity 5 is provided inside for loading the original multimeter pen;

[0033] The diameter of the nib body's receiving portion 2 gradually decreases toward the nib portion 1 , and a fixing device is disposed on the outer wall of the receiving portion 2 .

[0034] The structure of the traditional multimeter probe is as follows Figure 1 As shown, the utility model gradually reduces the diameter from the accommodating part 2 to the nib part 1 of the nib body, and an accommodating cavity 5 is provided inside the accommodating part 2. The shape of the accommodating cavity 5 is cylindrical. When the original test lead is inserted into the accommodating cavity 5, the original test lead can be better fixed without damaging any structure of the original test lead.

[0035] Embodiment 2:

[0036] like Figures 2 to 4 As shown, the utility model provides a replaceable multimeter pen tip without damaging the original structure, including a pen tip body, wherein the pen tip body is divided into a pen tip part 1 and a receiving part 2; an opening is provided at one end of the receiving part 2, and the receiving part 2 is a cylindrical structure, and a receiving cavity 5 is provided inside for loading the original multimeter pen;

[0037] The diameter of the nib body's receiving portion 2 gradually decreases toward the nib portion 1 , and a fixing device is disposed on the outer wall of the receiving portion 2 .

[0038] The difference between this embodiment and embodiment 1 is that:

[0039] like Figures 2 to 5 As shown, on the side wall of the accommodating cavity 5, a plurality of grooves 4 are provided toward the open end at a distance of 3 mm from the pen tip; specifically, 4 grooves are provided; the groove 4 is an axisymmetric structure, and the side wall of the groove and its axis form an angle of 3°; the axis of the groove is arranged parallel to the axis of the accommodating cavity; because the original test lead is worn, it will become loose when inserted into the accommodating cavity 5, and the screw is not fixed tightly, the groove 4 can better fix the original multimeter test lead, prevent it from loosening and shaking, make it have good contact, and make the measurement data more accurate;

[0040] The middle part of the outer wall of the accommodating part 2 is provided with a screw 3 and a screw buckle, which are threadedly connected to better fix the inserted original test pen, and are easy to install and disassemble. If the pen tip is not sharp due to sparking or other reasons, it can be replaced at any time, with low cost and excellent practical effect; the outside of the screw 3 is attached with insulating glue, which can withstand 1000V high voltage to prevent electric shock and short circuit;

[0041] The pen tip part is made of high-quality material with a pointed shape, wear resistance and good conductivity. The pen tip made in this way is sharp, has high pen tip hardness, and has good conductivity. It has the advantage of precise positioning when measuring circuit board wiring and surface mount components; the effect is particularly outstanding when measuring circuit boards and relatively precise parts.

[0042] The parts of the present invention that are not described in detail are prior art, and their internal structures will not be described one by one here.

[0043] Although various embodiments of the present invention have been described in detail herein, it should be understood that the present invention is not limited to the specific embodiments described and illustrated herein, and other modifications and variations may be implemented by those skilled in the art without departing from the essence and scope of the present invention. All such modifications and variations fall within the scope of the present invention. Moreover, all components described herein may be replaced by other technically equivalent components.

Claims

1. A replaceable multimeter pen tip without damaging the original structure, characterized in that: The pen tip body comprises a pen tip part and a receiving part; an opening is arranged at one end of the receiving part, and the receiving part is a cylindrical structure, and a receiving cavity is arranged inside the receiving part for loading the original multimeter probe; The diameter of the nib body from the accommodating part to the nib part gradually decreases, and a fixing device is provided on the outer wall of the accommodating part.

2. The replaceable multimeter pen tip without damaging the original structure according to claim 1, characterized in that: The shape of the accommodating cavity is cylindrical.

3. The replaceable multimeter pen tip without damaging the original structure according to claim 1, characterized in that: A plurality of grooves are provided on the side wall of the accommodating cavity.

4. The replaceable multimeter pen tip without damaging the original structure according to claim 3, characterized in that: A plurality of grooves are provided on the side wall of the accommodating cavity, 3 mm away from the pen tip portion and toward the open end.

5. The replaceable multimeter pen tip without damaging the original structure according to claim 4, characterized in that: The groove is an axisymmetric structure, and the side wall of the groove and its axis form an angle; the axis of the groove is arranged parallel to the axis of the accommodating cavity.

6. The replaceable multimeter pen tip without damaging the original structure according to claim 5, characterized in that: The angle is 3°.

7. The replaceable multimeter pen tip without damaging the original structure according to claim 3, characterized in that: The number of slots is 4.

8. The replaceable multimeter pen tip without damaging the original structure according to claim 1, characterized in that: The fixing device comprises a screw and a screw buckle, which are threadedly connected and used to fix the inserted original test lead.

9. The replaceable multimeter pen tip without damaging the original structure according to claim 8, characterized in that: Insulating glue is attached to the outside of the screw.

10. The replaceable multimeter pen tip without damaging the original structure according to claim 1, characterized in that: The pen tip part is made of a material with wear resistance and electrical conductivity, and the shape of the pen tip part is pointed.

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