Voltmeter convenient for replacing detection head

Abstract

The voltmeter comprises a voltmeter body, two detection pens are inserted outside the voltmeter body, each detection pen comprises a pen holder and a pen point, one end of the pen holder is detachably provided with the pen point, one side of the pen holder is provided with an installation groove, and the installation groove is provided with a through hole. First indication blocks are symmetrically and fixedly installed at one end of the outer portion of the pen holder, the pen point is in threaded connection with the interior of the installation groove, and through the structural design of the pen holder, the installation groove, the pen point and the circular block and the detachable design of the pen holder and the pen point, when the detection probe is accidentally damaged, separation of the pen point and the pen holder is conveniently achieved; and meanwhile, through the structural design of a circular groove and an insulating spring, after the pen holder and the pen point are connected, the second conducting strip and the first conducting strip can be stable after being in contact, and the normal working state of the device during use is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of voltmeter accessories, in particular to a voltmeter and a voltmeter probe structure which are convenient for replacing probes. Background Art

[0002] A voltmeter is an instrument used to measure voltage. It can convert the magnitude and direction of voltage into an intuitive numerical value and pointer deflection form for easy measurement and analysis. A voltmeter usually consists of a measuring mechanism and a housing. The measuring mechanism includes elements such as a meter head, a voltage divider, and an additional resistor, which is the core part of the voltmeter, and the housing plays a role in protection and support.

[0003] Once the traditional voltmeter probe is damaged or needs to be replaced, professional personnel and complex tools are often required for operation and replacement, and it is difficult for ordinary users to complete the replacement by themselves. This not only increases the maintenance cost but also affects the normal use of the voltmeter. Therefore, in view of the above situation, a voltmeter and a voltmeter probe structure which are convenient for replacing probes are proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that once the traditional voltmeter probe is damaged or needs to be replaced, professional personnel and complex tools are often required for operation and replacement, and it is difficult for ordinary users to complete the replacement by themselves in the prior art, and a voltmeter and a voltmeter probe structure which are convenient for replacing probes are proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A voltmeter which is convenient for replacing a probe includes a voltmeter body. Two test pens are plugged outside the voltmeter body. The test pen includes a pen rod and a pen tip. One end of the pen rod is detachably installed with the pen tip.

[0007] An installation groove is formed on one side of the pen rod. First indicating blocks are symmetrically and fixedly installed at the outer end of the pen rod. The pen tip is threadedly connected inside the installation groove.

[0008] A circular block is fixedly connected to the pen tip at the end close to the pen rod. A circular groove is formed on one side of the circular block. A plurality of insulating springs are uniformly and fixedly installed inside the circular groove. One ends of the plurality of insulating springs are commonly and fixedly connected to a second conductive sheet. Second indicating blocks are symmetrically and fixedly installed at the outer end of the pen tip.

[0009] Preferably, a first conductive sheet is fixedly installed at one end inside the installation groove. One side of the first conductive sheet is fixedly connected with a wire. The other end of the wire penetrates through the other end of the pen rod and is fixedly connected with a plug connector.

[0010] Preferably, a detection probe is fixedly connected to one end of the pen tip away from the circular block. One side of the second conductive sheet is fixedly connected to a wire, and one end of the wire penetrates through the pen tip and is fixedly connected to one end of the detection probe.

[0011] Preferably, internal threads are provided inside the installation groove, and external threads are provided on the outer surface of the circular block.

[0012] Preferably, the cross-sectional projection of the first indicating block is in a "C" shape, and the cross-sectional projection of the second indicating block is in a convex shape.

[0013] A voltmeter and a voltmeter detection head structure facilitating the replacement of the detection head. The inner diameter of the circular groove is the same as the diameter of the second conductive sheet, and the pen tip is in a conical structure.

[0014] The utility model has the following beneficial effects:

[0015] 1. Through the structural design of the pen rod, installation groove, pen tip and circular block, with the detachable design of the pen rod and the pen tip, when the detection probe is accidentally damaged, it is convenient to separate the pen tip from the pen rod, thus facilitating ordinary users to quickly perform maintenance and replacement. At the same time, through the structural design of the circular groove and the insulating spring, after connecting the pen rod and the pen tip, the second conductive sheet can be stably in contact with the first conductive sheet, ensuring the normal working state of the device during use.

[0016] 2. Through the structural design of the first indicating block and the second indicating block, when the pen rod and the pen tip are installed and connected, at this time, the second indicating block moves into the interior of the first indicating block. When the connection between the pen rod and the pen tip accidentally becomes loose, at this time, the second indicating block will move out of the first indicating block, causing the second indicating block to be misaligned with the first indicating block, thus achieving the advantage of reminding the user that the pen rod and the pen tip are loose, which is convenient for the user's daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view structural schematic diagram proposed by the utility model;

[0018] Figure 2 is the assembly structural schematic diagram of the detection pen proposed by the utility model;

[0019] Figure 3 is proposed by the utility model Figure 2 the partial enlarged structural schematic diagram at A in;

[0020] Figure 4 is the assembly structural schematic diagram of the pen tip proposed by the utility model.

[0021] In the figure: 1, voltmeter body; 2, detection pen; 3, pen holder; 301, mounting slot; 302, first conductive sheet; 303, first indicator block; 4, pen tip; 401, detection probe; 402, circular block; 403, circular slot; 404, insulating spring; 405, second conductive sheet; 406, second indicator block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figures 1-4 A voltmeter with an easy-to-replace detection head includes a voltmeter body 1, two detection pens 2 are plugged into the outside of the voltmeter body 1, the detection pen 2 includes a pen holder 3 and a pen head 4, and the pen head 4 is detachably mounted on one end of the pen holder 3.

[0024] A mounting groove 301 is provided on one side of the pen body 3, and an internal thread is provided inside the mounting groove 301. A first conductive sheet 302 is fixedly installed at one end of the mounting groove 301, and a wire is fixedly connected to one side of the first conductive sheet 302, and the other conductive end passes through the other end of the pen body 3 and is fixedly connected to a connector. Furthermore, the connector refers to a structural member used to be plugged into the plug interface of the voltmeter body 1. This is a prior art and will not be elaborated on here. A first indicator block 303 is symmetrically fixedly installed at one end of the outside of the pen body 3, and the cross-sectional projection of the first indicator block 303 is in the shape of a "匚", and the internal thread of the mounting groove 301 is connected to the pen head 4.

[0025] The pen tip 4 is fixedly connected to a circular block 402 at one end close to the pen shaft 3, and an external thread is provided on the outer surface of the circular block 402. The pen tip 4 is fixedly connected to a detection probe 401 at one end away from the circular block 402. A wire is fixedly connected to one side of the second conductive sheet 405, and one end of the wire passes through the pen tip 4 and is fixedly connected to one end of the detection probe 401. A circular groove 403 is provided on one side of the circular block 402, and a plurality of insulating springs 404 are evenly fixedly installed inside the circular groove 403, and one end of the plurality of insulating springs 404 are commonly fixedly connected to the second conductive sheet 405, and a second indicator block 406 is symmetrically fixedly installed at one end outside the pen tip 4, and the cross-sectional projection of the second indicator block 406 is convex.

[0026] This embodiment also provides a voltmeter and a voltmeter detection head structure that are easy to replace the detection head. The inner diameter of the circular groove 403 is the same as the diameter of the second conductive sheet 405, and the pen tip 4 has a conical structure and is made of plastic material. The detection probe 401 is made of metal material.

[0027] Usage method and advantages of the present utility model: When the voltage meter and the voltage meter detection head structure that are convenient for replacing the detection head are in use, the working process is as follows:

[0028] As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in [relevant figures], when using this device, during the daily use of the user, when the detection probe 401 is accidentally damaged, rotate the pen tip 4 counterclockwise to remove the circular block 402 from the installation groove 301. After replacing the new pen tip 4, then screw the circular block 402 clockwise into the installation groove 301. After tightening, the second conductive sheet 405 contacts the first conductive sheet 302. At the same time, the second indicating block 406 will rotate into the corresponding first indicating block 303 and keep horizontal with the outer surface of the first indicating block 303. When the pen tip 4 and the pen rod 3 are accidentally loosened during daily use, the second indicating block 406 will move out of the first indicating block 303, causing the second indicating block 406 to be misaligned with the first indicating block 303, thereby facilitating the user to observe and achieving the benefit of reminding the user that the pen rod 3 and the pen tip 4 are loose.

[0029] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its utility model concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A voltmeter facilitating the replacement of a detection head, comprising a voltmeter body (1), characterized in that: Two detection pens (2) are plugged into the outside of the voltage meter body (1), and the detection pens (2) comprise a pen holder (3) and a pen head (4), and the pen head (4) is detachably mounted on one end of the pen holder (3); A mounting groove (301) is provided on one side of the pen holder (3); a first indicator block (303) is symmetrically fixedly mounted on one end of the outside of the pen holder (3); and a pen head (4) is threadedly connected to the inside of the mounting groove (301); The pen tip (4) is fixedly connected to a circular block (402) at one end close to the pen shaft (3); a circular groove (403) is provided on one side of the circular block (402); a plurality of insulating springs (404) are evenly and fixedly installed inside the circular groove (403); one end of the plurality of insulating springs (404) is commonly and fixedly connected to a second conductive sheet (405); and a second indicating block (406) is symmetrically and fixedly installed at one end outside the pen tip (4).

2. The voltmeter capable of facilitating the replacement of a detection head according to claim 1, wherein: A first conductive sheet (302) is fixedly mounted on one end of the mounting groove (301), a conductive wire is fixedly connected to one side of the first conductive sheet (302), and the other end of the conductive sheet passes through the other end of the pen holder (3) and is fixedly connected to a connector.

3. The voltmeter capable of facilitating the replacement of a detection head according to claim 1, wherein: The pen tip (4) is fixedly connected to a detection probe (401) at one end away from the circular block (402), and a wire is fixedly connected to one side of the second conductive sheet (405), and one end of the wire passes through the pen tip (4) and is fixedly connected to one end of the detection probe (401).

4. A voltmeter facilitating the replacement of a detection head according to claim 1, characterized in that: The interior of the installation groove (301) is provided with an internal thread, and the outer surface of the circular block (402) is provided with an external thread.

5. A voltmeter facilitating the replacement of a detection head according to claim 1, characterized in that: The cross-sectional projection of the first indicator block (303) is in a "匚" shape, and the cross-sectional projection of the second indicator block (406) is in a convex shape.

6. The voltmeter for facilitating the replacement of a detection head according to claim 1, wherein: The inner diameter of the circular groove (403) is the same as the diameter of the second conductive sheet (405), and the pen tip (4) has a conical structure.

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