CN210954173U

CN210954173U - DC resistance tester

Info

Publication number: CN210954173U
Application number: CN201921871127.5U
Authority: CN
Inventors: 常栋凯
Original assignee: Baoding Zhuoyue Electric Co ltd
Current assignee: Baoding Zhuoyue Electric Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-07
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a direct current resistance tester, which comprises a housin, install tester body and baffle in the casing, all be equipped with air intake and air outlet on casing and the tester body, install the support in the air intake, install axial fan on the support, be equipped with the mounting groove on the casing, install battery and switch in the mounting groove. The direct current resistance tester blows external air into the tester body through the axial flow fan, so that air circulation inside the tester body can be accelerated, the heat dissipation efficiency of electronic elements inside the tester body is improved, and the condition that the service life of the electronic elements is influenced due to overhigh internal temperature of the tester body is avoided; receive the wire casing through rotating for the winding of test wire is on receiving the wire casing, thereby can control the length of test wire as required, avoids appearing the chaotic condition of test wire, convenient to use.

Description

DC resistance tester

Technical Field

The utility model relates to a resistance test technical field specifically is direct current resistance tester.

Background

The fast DC resistance tester (microohm meter) is a high-precision upgrading product replacing DC single-arm and double-arm bridges. The DC resistance rapid tester adopts an advanced switching power supply technology, and a measurement result is displayed by a dot-matrix liquid crystal. The defect that the value displayed by an LED of other similar products is inconvenient to read in the sun is overcome, and the automatic arc extinction function is achieved. The direct current resistance test of the transformer winding is an indispensable test project after the transformer is handed over, overhauled and changed with a tap switch. In general, measuring the dc resistance of the transformer winding and the high power inductive device by conventional methods (bridge method and voltage drop method) is a time-consuming and labor-intensive task. To change such a situation, the measurement time is shortened and the workload of the tester is reduced.

At present, a direct current resistance tester at the present stage generally comprises a test box body and a box cover hinged to the test box body, wherein the top of the test box body is an operation panel, and an inner cavity of the test box body is provided with an electronic element. At the in-process of direct current resistance tester work, the electronic component in the test box can generate heat for the high temperature in the test box influences the life of electronic component in the direct current resistance tester, and, current direct current resistance tester's test wire is longer, appears the chaotic condition of test wire during the use easily, and is very inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a direct current resistance tester to solve the electronic component in the test box and can generate heat, make the high temperature in the test box, influence the life of electronic component in the direct current resistance tester, and, current direct current resistance tester's test wire is longer, appears the chaotic condition of test wire during the use easily, very inconvenient problem.

In order to achieve the above object, the utility model provides a following technical scheme: the direct current resistance tester comprises a shell, wherein a tester body and a partition plate are installed in the shell, an air inlet and an air outlet are formed in the shell and the tester body, a support is installed in the air inlet, an axial flow fan is installed on the support, a mounting groove is formed in the shell, a storage battery and a switch are installed in the mounting groove, and the axial flow fan, the storage battery and the switch are connected in series through wires.

Preferably, the air inlet and the air outlet are internally provided with dust screens.

Preferably, a rotating shaft is installed between the shell and the partition plate, and a wire collecting groove is installed on the rotating shaft.

Preferably, the test circuit board of the tester body is connected with a test wire, the partition plate, the rotating shaft and the wire collecting groove are all provided with wire holes, and one end of the test wire penetrates through the wire holes to be connected with a wire clamp.

Preferably, one end of the rotating shaft penetrates through the shell, and a knob is mounted at the penetrating end of the rotating shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the direct current resistance tester blows external air into the tester body through the axial flow fan, so that air circulation inside the tester body can be accelerated, the heat dissipation efficiency of electronic elements inside the tester body is improved, and the condition that the service life of the electronic elements is influenced due to overhigh internal temperature of the tester body is avoided; receive the wire casing through rotating for the winding of test wire is on receiving the wire casing, thereby can control the length of test wire as required, avoids appearing the chaotic condition of test wire, convenient to use.

Drawings

Fig. 1 is a top view of the overall structure of the present invention;

FIG. 2 is a top cross-sectional view of the overall structure of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2 according to the present invention.

In the figure: the device comprises a shell 1, a tester body 2, a partition plate 3, an air inlet 4, an air outlet 5, a support 6, an axial flow fan 7, a mounting groove 8, a storage battery 9, a switch 10, a dust screen 11, a rotating shaft 12, a wire collecting groove 13, a test wire 14, a wire hole 15, a wire clamp 16 and a knob 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: DC resistance tester, including casing 1, install tester body 2 and baffle 3 through the screw in the casing 1, all be equipped with air intake 4 and air outlet 5 on casing 1 and the tester body 2, all install dust screen 11 through the screw in air intake 4 and the air outlet 5, can avoid appearing the condition that the dust got into in the tester body 2 through dust screen 11, install support 6 through the screw in the air intake 4, install axial fan 7 through the screw on the support 6, axial fan 7's model is R87F-A1A85HP, be equipped with mounting groove 8 on casing 1, install battery 9 and switch 10 through the screw in the mounting groove 8, axial fan 7, through wire series connection between battery 9 and the switch 10.

Referring to fig. 1, 2 and 3, a rotating shaft 12 is installed between the casing 1 and the partition plate 3 through a bearing, a wire receiving groove 13 is installed on the rotating shaft 12 through a screw, a test circuit board of the tester body 2 is connected with a test wire 14, wire holes 15 are formed in the partition plate 3, the rotating shaft 12 and the wire receiving groove 13, and one end of the test wire 14 penetrates through the wire hole 15 to be connected with a wire clamp 16.

Referring to fig. 2, one end of the rotating shaft 12 penetrates through the housing 1, and a knob 17 is mounted on the end of the rotating shaft 12 through a bolt.

The utility model discloses when concrete implementation: when the tester is used, the switch 10 is used for controlling the axial flow fan 7 to operate, the axial flow fan 7 blows external air into the tester body 2, and air circulation inside the tester body 2 can be accelerated, so that the heat dissipation efficiency of electronic elements inside the tester body 2 is improved, and the condition that the service life of the electronic elements is influenced due to overhigh internal temperature of the tester body 2 is avoided; drive axis of rotation 12 through rotating knob 17 and rotate, axis of rotation 12 drives receipts wire casing 13 and rotates for 14 twines of test wire are on receiving wire casing 13, thereby can control the length of test wire 14 as required, avoid appearing the chaotic condition of test wire 14, convenient to use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Direct current resistance tester, including casing (1), its characterized in that: install tester body (2) and baffle (3) in casing (1), all be equipped with air intake (4) and air outlet (5) on casing (1) and tester body (2), install support (6) in air intake (4), install axial fan (7) on support (6), be equipped with mounting groove (8) on casing (1), install battery (9) and switch (10) in mounting groove (8), through wire series connection between axial fan (7), battery (9) and the switch (10).

2. The direct current resistance tester of claim 1, wherein: and dust screens (11) are respectively arranged in the air inlet (4) and the air outlet (5).

3. The direct current resistance tester of claim 1, wherein: a rotating shaft (12) is installed between the shell (1) and the partition plate (3), and a wire collecting groove (13) is installed on the rotating shaft (12).

4. The direct current resistance tester of claim 3, wherein: the tester is characterized in that a test circuit board of the tester body (2) is connected with a test lead (14), the partition plate (3), the rotating shaft (12) and the wire collecting groove (13) are all provided with wire holes (15), and one end of the test lead (14) penetrates through the wire holes (15) to be connected with a wire clamp (16).

5. The direct current resistance tester of claim 3, wherein: one end of the rotating shaft (12) penetrates through the shell (1), and a knob (17) is installed at the end, through which the rotating shaft (12) penetrates out, of the rotating shaft.