A high-precision resistance detector

Abstract

A high-precision resistance tester, belonging to the field of resistance testers, comprises a tester body and a cover plate. The top surface of the tester body has a testing panel with a test probe connected to it. The cover plate is closable and connected to the top of the tester body to seal and prevent dust accumulation. The end of the cover plate facing the tester body has a storage slot containing at least one magnetic test probe storage structure. The probe enters the probe sealing assembly, ensuring a sealed and dustproof environment while also providing cushioning protection to guarantee the probe's testing accuracy. This also effectively prevents the probe from scratching other parts of the instrument during use. The elastic outer shell of the test probe is magnetically attracted and held by a metal sheet within its interlayer, facilitating operation and providing connection stability.

Description

Technical Field

[0001] This utility model is a high-precision resistance detector, belonging to the field of resistance detectors. Background Technology

[0002] A resistance tester is an instrument used to measure the conductivity of an object. Resistance testers are widely used in electrical safety inspections and grounding project completion acceptance. There are many types of resistance testers, including grounding resistance testers, insulation resistance testers, DC resistance meters, surface resistance testers, and loop resistance testers.

[0003] Among them, the insulation resistance tester, also known as the digital insulation resistance tester, megohmmeter, or intelligent insulation resistance tester, is suitable for performing insulation tests during the maintenance, repair, testing, and calibration of various electrical equipment.

[0004] After use, existing insulation resistance testers require the test pens to be stored. The test pens are held and positioned by the elastic clips on the cover. With repeated use, the elastic clips are prone to damage, and the probes of the test pens are exposed. During the handling process, they are likely to come into contact with the instrument shell, causing wear and affecting the testing work. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a high-precision resistance tester. This solves the problem that existing insulation resistance testers require storage of the test pens after use. The test pens are held and positioned directly by elastic clips on the cover. However, with repeated use, the elastic clips are prone to damage, and the probes of the test pens are exposed. During handling, they are easily exposed to contact with the instrument casing, causing wear and affecting the testing process.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-precision resistance detector, the structure of which includes a detector body and a cover plate; the top surface of the detector body is provided with a detection panel, on which a detection pen is connected; the cover plate is connected to the top of the detector body in an openable and closable manner to seal and prevent dust from entering the detector body; the end of the cover plate facing the detector body has a storage slot, and at least one magnetic detection pen storage structure is provided in the storage slot;

[0007] The magnetic detection pen storage structure includes a storage shell fixedly connected to the inner wall of the storage slot. The storage shell is provided with a positioning groove for storing the detection pen. From left to right, the inner wall of the positioning groove is provided with a probe sealing assembly, a magnetic block for attracting and positioning the detection pen, and a wire protrusion.

[0008] Furthermore, in order to cooperate with the magnetic detection pen storage structure for attraction and storage, the detection pen includes a pen body, a probe located at one end of the pen body, and a wire located at the other end of the pen body. The outer wall of the pen body is wrapped with an elastic shell, which is tightly nested inside the magnetic block. A metal sheet that attracts the magnetic block is provided in the interlayer of the elastic shell. The probe extends into the probe sealing assembly, and the wire extends out from the wire extension port and connects to the detection panel.

[0009] Furthermore, in order to improve the attraction stability, the magnetic block is a U-shaped structure with the opening direction consistent with the opening of the positioning groove, and the inner wall of the magnetic block is provided with at least one elastic protrusion to restrict the positioning of the detection pen.

[0010] Furthermore, in order to protect the probe and prevent dust, the probe sealing assembly includes a sealing block, a probe insertion channel located in the middle section of the sealing block, and an inlet located at the bottom of the sealing block and connected to the insertion channel, with the inner walls of the two sides of the inlet fitted together.

[0011] Furthermore, for periodic replacement, the sealing block is detachably connected to the housing.

[0012] Furthermore, to improve the ease of assembly and disassembly, the detachable connection is specifically one of Velcro connection or snap-on connection.

[0013] Furthermore, in order to perform the testing work, the testing panel includes a display screen for displaying data, a button for starting the testing, a power socket, a switch for turning on and off, a current output terminal connected to the testing pen, and an electrical signal input terminal.

[0014] Furthermore, for ease of opening and closing, the opening and closing mechanism is specifically a hinge.

[0015] The beneficial effects of this utility model are:

[0016] After using the resistance tester, disconnect the wires from the test panel and place the test pen in the positioning slot. The housing provides protection.

[0017] The probe enters the probe sealing assembly, which not only ensures a sealed and dustproof environment but also provides a buffering protection effect to guarantee the probe's detection accuracy. It also effectively prevents the probe from scratching other parts of the instrument when it is being handled.

[0018] The flexible outer shell of the testing pen is held in place by a magnetic block through a metal sheet inside its interlayer, making it easy to operate and providing stable connection. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a high-precision resistance detector according to the present invention;

[0021] Figure 2 A cross-sectional schematic diagram of the magnetic detection pen storage structure;

[0022] Figure 3 A schematic diagram of the cross-sectional structure connecting the magnetic detection pen storage structure and the detection pen itself.

[0023] Figure 4 This is a schematic diagram of the probe sealing assembly.

[0024] Figure 5 This is a schematic diagram of the magnetic block.

[0025] In the diagram: Detector body-1, cover plate-2, detection panel-11, magnetic pen storage structure-21, storage shell-211, positioning groove-212, magnetic block-213, probe sealing assembly-214, arc groove-215, wire extension port-216, pen body-2121, probe-2122, wire-2125, metal sheet-2124, elastic shell-2123, elastic protrusion-2131, sealing block-2141, probe insertion channel-2142, inlet-2143. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example 1

[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 This utility model provides a high-precision resistance tester technical solution: its structure includes a tester body 1 and a cover plate 2; the top surface of the tester body 1 is provided with a test panel 11, and a test pen is connected to the test panel 11; the cover plate 2 is connected to the top of the tester body 1 in an openable and closable manner to seal the tester body 1 and prevent dust; the end face of the cover plate 2 facing the tester body 1 has a storage slot, and at least one magnetic test pen storage structure 21 is provided in the storage slot;

[0028] like Figure 2As shown, the magnetic detection pen storage structure 21 includes a storage shell 211 fixedly connected to the inner wall of the storage slot. The storage shell 211 is provided with a positioning slot 212 for storing the detection pen. The inner wall of the positioning slot 212 is provided with a probe sealing assembly 214, a magnetic block 213 for attracting and positioning the detection pen, and a wire protrusion 216 from left to right.

[0029] Among them, the inner wall of the middle section of the opening of the positioning groove 212 is provided with an arc-shaped groove 215 to facilitate the use of the detection pen.

[0030] like Figure 3 As shown, in order to cooperate with the magnetic detection pen storage structure 21 for suction and storage, the detection pen includes a pen body 2121, a probe 2122 located at one end of the pen body 2121, and a wire 2125 located at the other end of the pen body 2121. The outer wall of the pen body 2121 is wrapped with an elastic shell 2123. The elastic shell 2123 is tightly nested inside the magnetic block 213, and a metal sheet 2124 that attracts the magnetic block 213 is provided in the interlayer of the elastic shell 2123. The probe 2122 extends into the probe sealing assembly 214, and the wire 2125 extends out from the wire extension port 216 and is connected to the detection panel 11.

[0031] The elastic outer shell 2123 is made of rubber and can be deformed to fit tightly into the inner side of the magnetic block 213. In addition, the outer wall of the elastic outer shell 2123 has anti-slip texture to facilitate the grip of the operator.

[0032] like Figure 5 As shown, in order to improve the attraction stability, the magnetic block 213 is a U-shaped structure with the opening direction consistent with the opening of the positioning groove 212, and the inner wall of the magnetic block 213 is provided with at least one elastic protrusion 2131 for limiting the positioning of the detection pen.

[0033] The elastic protrusion 2131 is made of either silicone or elastic plastic and has an arc at its end to facilitate the installation and removal of the elastic shell 2123.

[0034] like Figure 4 As shown, in order to protect and prevent dust from the probe 2122, the probe sealing assembly 214 includes a sealing block 2141, a probe insertion channel 2142 located in the middle section of the sealing block 2141, and an inlet 2143 located at the bottom of the sealing block 2141 and connected to the insertion channel 2142. The inner walls of the inlet 2143 are fitted together on both sides. The sealing block 2141 is made of sponge material, which has a buffering and sealing effect. During the insertion process, since the probe 2122 enters the positioning groove 212 vertically, the probe 2122 will first squeeze open the inlet 2143 and then directly enter the probe insertion channel 2142. The inner walls of the inlet 2143 are fitted together on both sides, which effectively improves the sealing effect.

[0035] The sealing block 2141 has a cuboid or cube structure, preferably a cuboid, to improve the ease of installation.

[0036] For periodic replacement, the sealing block 2141 is detachably connected to the housing 211.

[0037] To improve the ease of assembly and disassembly, the detachable connection is specifically a Velcro connection, wherein the barbed side of the Velcro is connected to the outer wall of the sealing block 2141, and the rough side of the Velcro is connected to the inner wall of the storage shell 211.

[0038] For the purpose of conducting the testing, the testing panel 11 includes a display screen for displaying data, a button for starting the testing, a power socket, a switch for turning on and off, a current output terminal connected to the testing pen, and an electrical signal input terminal.

[0039] For ease of opening and closing, the opening and closing mechanism is specifically a hinge.

[0040] Principle: After the resistance tester is used, the lead wire 2125 is disconnected from the detection panel 11, and then the test pen is placed in the positioning groove 212. Under the positioning of the housing 211, it has a protective effect. During the process of entering, the probe 2122 enters the probe sealing assembly 214, which not only ensures sealing and dust prevention, but also has a buffer protection effect to ensure the detection accuracy of the probe 2122. When taking it out, it will also effectively prevent the probe 2122 from scratching other structures of the instrument. The elastic housing 2123 of the test pen will be attracted and held by the magnetic block 213 through the metal sheet 2124 in its interlayer, which is convenient to operate and has connection stability. Example 2

[0041] For the sake of brevity, the parts that are the same as those in other embodiments will not be described again. The main focus here is on the structure that is different from other embodiments of this utility model. The detachable connection described in this application is specifically a snap-fit ​​connection. The snap-fit ​​connection includes fasteners and buckle seats that are respectively connected to the outer wall of the sealing block 2141 and the inner wall of the storage shell 211.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision resistance detector, characterized in that: Its structure includes the detector body (1); The cover plate (2) is connected to the top of the detector body (1) in an openable and closable manner to seal the detector body (1) and prevent dust. The top surface of the detector body (1) is provided with a detection panel (11), and a detection pen is connected to the detection panel (11); The end face of the cover plate (2) facing the detector body (1) has a storage slot, and at least one magnetic detection pen storage structure (21) is provided in the storage slot. The magnetic pen storage structure (21) includes a storage shell (211) fixedly connected to the inner wall of the storage slot. The storage shell (211) is provided with a positioning slot (212) for storing the pen. The inner wall of the positioning slot (212) is provided with a probe sealing assembly (214), a magnetic block (213) for attracting and positioning the pen, and a wire protrusion (216) from left to right.

2. The high-precision resistance detector according to claim 1, characterized in that: The detection pen includes a pen body (2121), a probe (2122) located at one end of the pen body (2121), and a wire (2125) located at the other end of the pen body (2121). The outer wall of the pen body (2121) is wrapped with an elastic shell (2123). The elastic shell (2123) is tightly nested inside the magnetic block (213), and a metal sheet (2124) that attracts the magnetic block (213) is provided in the interlayer of the elastic shell (2123). The probe (2122) extends into the probe sealing assembly (214), and the wire (2125) extends out from the wire extension port (216) and is connected to the detection panel (11).

3. A high-precision resistance detector according to claim 2, characterized in that: The magnetic block (213) is a U-shaped structure with the opening direction consistent with the opening of the positioning groove (212). The inner wall of the magnetic block (213) is provided with at least one elastic protrusion (2131) for limiting the positioning of the detection pen.

4. A high-precision resistance detector according to claim 2, characterized in that: The probe sealing assembly (214) includes a sealing block (2141), a probe insertion channel (2142) located in the middle section of the sealing block (2141), and an inlet (2143) located at the bottom of the sealing block (2141) and connected to the insertion channel (2142), with the inner walls of the two sides of the inlet (2143) fitting together.

5. A high-precision resistance detector according to claim 4, characterized in that: The sealing block (2141) and the housing (211) are detachably connected.

6. A high-precision resistance detector according to claim 5, characterized in that: The detachable connection is specifically one of Velcro connection or snap-on connection.

7. A high-precision resistance detector according to claim 2, characterized in that: The detection panel (11) includes a display screen for displaying data, a button for starting the detection, a power socket, a switch for turning on and off, a current output terminal connected to the detection pen, and an electrical signal input terminal.

8. A high-precision resistance detector according to claim 1, characterized in that: The opening and closing mechanism is specifically a hinge.

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