Portable grounding resistance tester

Abstract

The utility model relates to a portable grounding resistance tester, which comprises a resistance tester main body, a grounding probe and a test wire, and is characterized in that one end of the test wire is electrically connected with the resistance tester main body, and the other end is electrically connected with the grounding probe; a connecting assembly is arranged at the joint of the test wire and the grounding probe, the connecting assembly comprises a wire connecting mechanism, a probe connecting mechanism and a connecting fastener, and the two ends of the connecting fastener are connected with the wire connecting mechanism and the probe connecting mechanism respectively; one end, far away from the connecting fastener, of the wire connecting mechanism is connected to a test wire; the end, away from the connecting fastener, of the probe connecting mechanism is connected to the grounding probe. According to the invention, the test wire and the grounding probe are connected through the connection assembly composed of the wire connection mechanism, the probe connection mechanism and the connection fastener, and the connection mode can ensure that the connection between the test wire and the grounding probe is more stable, thereby effectively reducing the loosening or falling-off condition in the test process. And the continuity and the accuracy of measurement are ensured.

Description

Technical Field

[0001] This disclosure relates to the field of resistance testing instruments, specifically to a portable grounding resistance tester. Background Technology

[0002] A grounding resistance tester is an instrument specifically designed to measure the grounding resistance of grounding devices in various electrical equipment. This device typically consists of a main body and several probes, which are inserted into the ground to establish an electrical connection with the grounding system. During the test, the probes must maintain a specified distance and be connected to the tester main body via wires. The tester main body sends a test current to the ground and measures the voltage drop across the grounding resistance, thereby calculating the grounding resistance value. Existing grounding resistance testers have the following drawbacks in practical applications:

[0003] The probe is connected to the ground resistance meter body via a test lead. The test lead is connected by clamping the probe with a clip. The clip may not provide sufficient clamping force, resulting in an unstable connection. The probe may loosen or fall off during the test, affecting the continuity and accuracy of the measurement. Utility Model Content

[0004] To address the problems existing in the prior art, the present disclosure aims to provide a portable grounding resistance tester. This portable grounding resistance tester connects the test lead and the grounding probe using a connection assembly consisting of a lead connecting mechanism, a probe connecting mechanism, and connecting fasteners. This connection method ensures a more secure connection between the test lead and the grounding probe, effectively reducing the possibility of loosening or detachment during testing, and guaranteeing the continuity and accuracy of the measurement. Furthermore, the connection is simple: before use, the lead connecting mechanism is connected to the test lead, and the probe connecting mechanism is connected to the grounding probe. During use, the lead connecting mechanism and the probe connecting mechanism are directly connected to the connecting fasteners to complete the connection between the test lead and the grounding probe. This makes the connection between the test lead and the grounding probe more convenient and faster, effectively improving work efficiency.

[0005] The present disclosure discloses a portable grounding resistance tester, which includes a resistance tester body, a grounding probe and a test lead, wherein one end of the test lead is electrically connected to the resistance tester body and the other end is electrically connected to the grounding probe;

[0006] A connection assembly is provided at the connection point between the test wire and the grounding probe. The connection assembly includes a wire connection mechanism, a probe connection mechanism, and a connection fastener. The two ends of the connection fastener are respectively connected to the wire connection mechanism and the probe connection mechanism.

[0007] The end of the wire connection mechanism away from the connection fastener is connected to the test wire;

[0008] The probe connection mechanism is connected to the grounding probe at the end furthest from the connecting fastener.

[0009] Preferably, the wire connection mechanism includes a first fastener and a first connector, one end of the first fastener having a first through hole adapted to the end of the test wire, and one end of the test wire passing through the first through hole and connected to the first fastener.

[0010] Preferably, the connection between the end of the first fastener away from the first through hole and one end of the first connector is a threaded connection.

[0011] Preferably, the probe connection mechanism includes a second fastener and a second connector. One end of the second fastener has a second through hole adapted to the end of the grounding probe. One end of the grounding probe passes through the second through hole and is connected to the second fastener.

[0012] Preferably, the connection between the end of the second fastener away from the second through hole and one end of the second connector is a threaded connection.

[0013] Preferably, the connection between the connecting fastener and the wire connecting mechanism is a threaded connection;

[0014] The connection between the fastener and the probe connection mechanism is a threaded connection.

[0015] Preferably, the connecting fastener portion is made of a conductive material.

[0016] Preferably, the resistance tester body includes a switch assembly and a handle component disposed on the outside.

[0017] The advantages of the portable grounding resistance tester disclosed herein are as follows:

[0018] This disclosure discloses a portable grounding resistance tester, comprising a main body, a grounding probe, and a test lead. One end of the test lead is electrically connected to the main body, and the other end is electrically connected to the grounding probe. A connecting assembly is provided at the connection point between the test lead and the grounding probe. The connecting assembly includes a lead connecting mechanism, a probe connecting mechanism, and a connecting fastener. The two ends of the connecting fastener are respectively connected to the lead connecting mechanism and the probe connecting mechanism. The end of the lead connecting mechanism furthest from the connecting fastener is connected to the test lead; the end of the probe connecting mechanism furthest from the connecting fastener is connected to the grounding probe. By connecting the test lead and the grounding probe using the connecting assembly consisting of the lead connecting mechanism, the probe connecting mechanism, and the connecting fastener, this connection method ensures a more stable connection between the test lead and the grounding probe, effectively reducing the possibility of loosening or detachment during testing, and guaranteeing the continuity and accuracy of the measurement. Furthermore, the connection is simple: before use, the lead connecting mechanism is connected to the test lead, and the probe connecting mechanism is connected to the grounding probe. During use, the lead connecting mechanism and the probe connecting mechanism are directly connected to the connecting fastener to achieve the connection between the test lead and the grounding probe. This makes the connection between the test lead and the grounding probe more convenient and faster, effectively improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a portable grounding resistance tester as described in this disclosure;

[0020] Figure 2 This is a schematic diagram of the connection components of a portable grounding resistance tester as described in this disclosure;

[0021] Figure 3 This is a schematic diagram of the probe connection mechanism of a portable grounding resistance tester as described in this disclosure;

[0022] Figure 4 This is a schematic diagram of the wire connection mechanism of a portable grounding resistance tester as described in this disclosure;

[0023] Figure 5 This is a schematic diagram of the connection fastener structure of a portable grounding resistance tester as described in this disclosure.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10 - Main body of the resistance tester;

[0026] 20 - Grounding probe;

[0027] 30 - Test leads;

[0028] 40-Connecting assembly; 401-Wire connecting mechanism; 4011-First fastener; 4012-First connector; 402-Probe connecting mechanism; 4021-Second fastener; 4022-Second connector; 403-Connecting fastener. Detailed Implementation

[0029] like Figure 1 - Figure 5 As shown, the present disclosure discloses a portable grounding resistance tester, which includes a resistance tester body 10, a grounding probe 20 and a test wire 30. One end of the test wire 30 is electrically connected to the resistance tester body 10 and the other end is electrically connected to the grounding probe 20.

[0030] A connection component 40 is provided at the connection between the test wire 30 and the grounding probe 20. The connection component 40 includes a wire connection mechanism 401, a probe connection mechanism 402, and a connection fastener 403. The two ends of the connection fastener 403 are respectively connected to the wire connection mechanism 401 and the probe connection mechanism 402.

[0031] The end of the wire connection mechanism 401 away from the connecting fastener 403 is connected to the test wire 30;

[0032] The end of the probe connection mechanism 402 away from the connecting fastener 403 is connected to the grounding probe 20;

[0033] The test lead 30 and the ground probe 20 are connected by a connection assembly 40 consisting of a lead wire connection mechanism 401, a probe connection mechanism 402 and a connection fastener 402. This connection method ensures a more stable connection between the test lead 30 and the ground probe 20, effectively reducing the possibility of loosening or falling off during the test, and ensuring the continuity and accuracy of the measurement.

[0034] Furthermore, in this embodiment, the wire connection mechanism 401 includes a first fastener 4011 and a first connector 4012. One end of the first fastener 4011 has a first through hole adapted to the end of the test wire 30. One end of the test wire 30 passes through the first through hole and is connected to the first fastener 4011. The connection between one end of the test wire 30 and the first fastener 4011 can be a snap-fit ​​connection. A snap-fit ​​mechanism is provided inside the first fastener 4011. After one end of the test wire 30 passes through the first through hole, the snap-fit ​​mechanism connects and fixes the test wire 30, preventing the test wire 30 from sliding out or falling off along the first through hole during the test. In other optional embodiments, the connection between one end of the test wire 30 and the first fastener 4011 can be fixed by adhesive.

[0035] Furthermore, in this embodiment, the connection between the end of the first fastener 4011 away from the first through hole and one end of the first connector 4012 is a threaded connection; the end of the first fastener 4011 connected to the first connector 4012 uses an internal thread, and the end of the first connector 4012 connected to the first fastener 4011 uses an external thread.

[0036] Furthermore, in this embodiment, the probe connection mechanism 402 includes a second fastener 4021 and a second connector 4022. One end of the second fastener 4021 has a second through hole adapted to the end of the ground probe 20. One end of the ground probe 20 passes through the second through hole and is connected to the second fastener 4021. The connection between one end of the ground probe 20 and the second fastener 4021 can be a snap-fit ​​connection. A snap-fit ​​mechanism is provided inside the second fastener 4021. After one end of the ground probe 20 passes through the second through hole, the ground probe 20 is connected and fixed by the snap-fit ​​mechanism to prevent the ground probe 20 from sliding out or falling off along the second through hole during the test. In other optional embodiments, the connection between one end of the ground probe 20 and the second fastener 4021 can be fixed by adhesive.

[0037] Furthermore, in this embodiment, the connection between the end of the second fastener 4021 away from the second through hole and one end of the second connector 4022 is a threaded connection; the end of the second fastener 4021 connected to the second connector 4022 uses an internal thread, and the end of the second connector 4022 connected to the second fastener 4021 uses an external thread.

[0038] Furthermore, in this embodiment, the connection between the fastener 403 and the wire connection mechanism 401 is a threaded connection;

[0039] The connection between the fastener 403 and the probe connection mechanism 402 is a threaded connection;

[0040] The use of threaded connection makes the connection between grounding probe 20 and test wire 30 more secure. When it is necessary to replace grounding probe 20 or test wire 30, only one end needs to be replaced. The probe connection mechanism 402 or wire connection mechanism 401 can be disassembled and the replacement can be directly connected, which improves the efficiency of replacing parts.

[0041] A waterproof sealing ring is provided in the middle of the connecting fastener 403. The thread of the connecting fastener 403 extends from the waterproof sealing ring along both ends, so that the connection point from both ends of the connecting fastener 403 to the middle is sealed, preventing water from seeping through the gaps at the connection point and affecting the grounding probe 20 or the test wire 30.

[0042] Furthermore, in this embodiment, the connecting fastener 403 is made of a conductive material; the conductive material can be copper. After the wire connecting mechanism 401 and the probe connecting mechanism 402 are connected from both ends of the connecting fastener 403, the end of the test wire 30 in the wire connecting mechanism 401 contacts the conductive material portion of the connecting fastener 403, and the end of the grounding probe 20 in the probe connecting mechanism 402 contacts the conductive material portion of the connecting fastener 403, thereby making the test wire 30 and the grounding probe 20 electrically connected.

[0043] Furthermore, in this embodiment, the resistance tester body 10 includes a switch assembly and a handle component disposed on the outside; the switch assembly is used to turn the resistance tester body 10 on or off, and the handle component is used to facilitate holding and carrying the resistance tester body 10.

[0044] The following will, in conjunction with the above content, fully describe the working process of a portable grounding resistance tester according to this embodiment.

[0045] First, select an appropriate number of grounding probes 20 and a corresponding number of test wires 30. Connect the end of the grounding probe 20 that needs to be electrically connected to the test wire 30 to the probe connection mechanism 402, and connect the end of the test wire 30 that needs to be electrically connected to the grounding probe 20 to the wire connection mechanism 401.

[0046] Then, connect the end of the grounding probe 20 away from the probe connection mechanism 402 to the corresponding position, and connect the end of the test wire 30 away from the wire connection mechanism 401 to the resistance tester body 10. Then, the wire connection mechanism 401 and the probe connection mechanism 402 are connected from both ends of the connecting fastener 403 respectively. The grounding probe 20 and the test wire 30 are electrically connected through the conductive part of the connecting fastener 403. Finally, turn on the switch assembly of the resistance tester body 10 to perform the test.

[0047] In summary, the connection assembly 40, consisting of a wire connection mechanism 401, a probe connection mechanism 402, and a fastener 402, connects the test wire 30 and the ground probe 20. This connection method ensures a more stable connection between the test wire 30 and the ground probe 20, effectively reducing the possibility of loosening or falling off during testing, and guaranteeing the continuity and accuracy of the measurement. Furthermore, the connection is simple: before use, the wire connection mechanism 401 is connected to the test wire 30, and the probe connection mechanism 402 is connected to the ground probe 20. During use, the wire connection mechanism 401 and the probe connection mechanism 402 are directly connected to the fastener 403 to achieve the connection between the test wire 30 and the ground probe 20. This makes the connection between the test wire 30 and the ground probe 20 more convenient and faster, effectively improving work efficiency.

[0048] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0049] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims disclosed herein.

Claims

1. A portable grounding resistance tester, comprising a resistance tester body (10), a grounding probe (20), and a test lead (30), characterized in that, One end of the test lead (30) is electrically connected to the main body (10) of the resistance tester, and the other end is electrically connected to the grounding probe (20); A connection component (40) is provided at the connection between the test wire (30) and the grounding probe (20). The connection component (40) includes a wire connection mechanism (401), a probe connection mechanism (402), and a connection fastener (403). The two ends of the connection fastener (403) are respectively connected to the wire connection mechanism (401) and the probe connection mechanism (402). The end of the wire connection mechanism (401) away from the connection fastener (403) is connected to the test wire (30); The probe connection mechanism (402) is connected to the grounding probe (20) at the end away from the connection fastener (403).

2. The portable grounding resistance tester according to claim 1, characterized in that, The wire connection mechanism (401) includes a first fastener (4011) and a first connector (4012). One end of the first fastener (4011) has a first through hole adapted to the end of the test wire (30). One end of the test wire (30) passes through the first through hole and is connected to the first fastener (4011).

3. The portable grounding resistance tester according to claim 2, characterized in that, The connection between the end of the first fastener (4011) away from the first through hole and one end of the first connector (4012) is a threaded connection.

4. The portable grounding resistance tester according to claim 1, characterized in that, The probe connection mechanism (402) includes a second fastener (4021) and a second connector (4022). One end of the second fastener (4021) has a second through hole adapted to the end of the grounding probe (20). One end of the grounding probe (20) passes through the second through hole and is connected to the second fastener (4021).

5. The portable grounding resistance tester according to claim 4, characterized in that, The connection between the end of the second fastener (4021) away from the second through hole and one end of the second connector (4022) is a threaded connection.

6. The portable grounding resistance tester according to claim 1, characterized in that, The connection between the fastener (403) and the wire connection mechanism (401) is a threaded connection; The connection between the fastener (403) and the probe connection mechanism (402) is a threaded connection.

7. The portable grounding resistance tester according to claim 1, characterized in that, The connecting fastener (403) is made of a conductive material.

8. The portable grounding resistance tester according to claim 1, characterized in that, The resistance tester body (10) includes a switch assembly and a handle component located on the outside.

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