Weak current safety detection device

Abstract

The utility model relates to the technical field of weak current engineering, in particular to a weak current safety detection device which comprises a universal meter body, a wire storage box is fixedly installed on the lower side of the universal meter body, a wire winding assembly is rotatably installed on the inner wall of the wire storage box and comprises two wire rollers, a partition plate is fixedly installed on the inner wall of the wire storage box, and the two wire rollers are rotatably installed on the inner wall of the wire storage box. Two sliding openings are formed in one side of the panel. According to the utility model, the knob is manually rotated, the knob drives the wire roller to rotate, the wire roller drives the wire to move, the wire is released, the joint at one end of the wire is installed at the interface of the universal meter body, the other end of the wire is used to detect the current of a weak current circuit, and after the detection is completed, the joint is pulled out from the interface. And a rotary knob is manually and reversely rotated, and the rotary knob drives the wire roller to reversely rotate to take up the wire, so that the effect of winding the wire is achieved, the condition of wire winding is prevented, and the convenience of next use is improved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage engineering technology, specifically a low-voltage safety detection device. Background Technology

[0002] Low-voltage electrical engineering refers to the installation and maintenance of electrical equipment involving low voltage. Low-voltage systems typically operate at voltages below 50VAC or 120VDC and do not involve high-power currents, thus posing a lower electrical hazard. Low-voltage systems are widely used in construction, security, communications, and intelligent building systems. While the electrical hazard in low-voltage engineering is relatively low, direct contact with low-current equipment can still cause harm to personnel. Therefore, safety testing is still required during low-voltage system construction to detect the presence and magnitude of low-current equipment. A multimeter is typically used for this safety testing.

[0003] In existing technologies, when using a multimeter to test low-voltage circuits, two wires are generally required. One end of the wire is fitted with a connector, and the other end is fitted with a test probe. By connecting the two connectors to the multimeter, the test probe at the other end is used to detect the low-voltage circuit and display the result on the multimeter. In actual use, the wires are generally quite long, and after use, they are usually bundled or wrapped directly. This can lead to the wires becoming tangled, affecting normal use in the next application. Utility Model Content

[0004] The purpose of this invention is to provide a low-voltage safety detection device to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is: a low-voltage safety detection device, including a multimeter body, a wire storage box fixedly installed on the lower side of the multimeter body, and a wire take-up assembly rotatably installed on the inner wall of the wire storage box;

[0006] The take-up assembly includes two wire rollers. A partition is fixedly installed on the inner wall of the wire storage box. The two wire rollers are rotatably mounted on both sides of the partition. Wire through holes are opened on the surface of the wire rollers. Wires are fixedly installed in the wire through holes. The wires are wound around the surface of the wire rollers. A detection probe is fixedly installed at one end of the wires, and a connector is fixedly installed at the other end of the wires. A panel is fixedly installed on one side of the wire storage box. Two sliding openings are opened on one side of the panel, and wire management units are slidably installed in the sliding openings.

[0007] Preferably, the cable management unit includes two cable management blocks, which are slidably installed in two sliding ports. One side of each cable management block has a cable outlet hole through which the wire passes. The inner top wall of each sliding port has a groove, and a drive unit is slidably installed in the groove.

[0008] Preferably, the driving unit includes two driving blocks, which are slidably installed in two grooves. The lower sides of the two driving blocks are installed on the upper sides of two cable management blocks. A lead screw is rotatably installed in the groove, and the two driving blocks are screwed onto the surface of the lead screw.

[0009] Preferably, the drive unit further includes two transmission gears, which are fixedly installed on the non-threaded areas of the two lead screw surfaces, and a drive gear is fixedly installed on the surface of the wire roller, the drive gear meshing with the transmission gear.

[0010] Preferably, a damping bearing is fixedly installed on the surface of the wire roller, mounting holes are provided on both sides of the wire storage box, the outer ring of the damping shaft is fixedly connected to the mounting hole, and a knob is fixedly installed on one end of the wire roller.

[0011] Preferably, two placement boxes are fixedly installed on one side of the cable storage box, and a rubber protective sleeve is fixedly installed on the inner wall of the placement box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model allows for manual rotation of a knob, which drives a wire roller to rotate, thereby releasing the wire. By attaching one end of the wire to the interface on the multimeter body, the other end of the wire is used to detect the current in a low-voltage circuit. After the test is completed, the connector is pulled out of the interface, and the knob is manually rotated in the opposite direction. The knob drives the wire roller to rotate in the opposite direction, retracting the wire. This achieves the effect of winding the wire, preventing tangling and improving the convenience for future use.

[0014] 2. In this utility model, by manually rotating the knob in the opposite direction, the knob drives the wire roller to rotate in the opposite direction to retract the wire. During the wire retraction process, the wire roller drives the drive gear to rotate, the drive gear drives the transmission gear to rotate, the transmission gear drives the lead screw to rotate, the lead screw drives the drive block to move, the drive block drives the wire guiding block to move horizontally, and the wire guiding block drives the wound wire to adjust its level, so that the wire is evenly wound around the surface of the wire roller and prevents the wire from tangling. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the wire take-up assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the wire storage box in this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the center roller of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Multimeter body; 2. Test probe; 3. Cable storage box; 4. Connector; 5. Panel; 6. Knob; 7. Damping bearing; 8. Storage box; 9. Rubber protective sleeve; 10. Cable management block; 11. Drive gear; 12. Wire; 13. Wire roller; 14. Divider; 15. Lead screw; 16. Drive block; 17. Transmission gear; 18. Wire hole. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0023] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0024] like Figures 1-4 As shown, a low-voltage safety testing device includes a multimeter body 1, a wire storage box 3 is fixedly installed on the lower side of the multimeter body 1, and a wire take-up assembly is rotatably installed on the inner wall of the wire storage box 3.

[0025] The take-up assembly includes two wire rollers 13. A partition 14 is fixedly installed on the inner wall of the wire storage box 3. The two wire rollers 13 are rotatably installed on both sides of the partition 14. A wire hole 18 is opened on the surface of the wire roller 13. A wire 12 is fixedly installed in the wire hole 18. The wire 12 is wound around the surface of the wire roller 13. A detection probe 2 is fixedly installed at one end of the wire 12. A connector 4 is fixedly installed at the other end of the wire 12. A panel 5 is fixedly installed on one side of the wire storage box 3. Two sliding openings are opened on one side of the panel 5. A wire management unit is slidably installed in the sliding openings.

[0026] With the above structure, the multimeter body 1 is a multimeter commonly used in circuit testing in the prior art, which can detect weak current. The wire storage box 3 installed on the lower side of the multimeter is divided into equally spaced sections by the partition 14. Each area is rotatably installed with a wire roller 13. The wire roller 13 is hollow inside, and the radius of its end face away from the partition 14 is smaller than the radius of the winding surface. The wire hole 18 opened on the surface of the wire roller 13 is used to fix the wire 12. The connector 4 at one end of the wire 12 is used to connect to the multimeter body 1, and the detection probe 2 at the other end is used to test the circuit.

[0027] Furthermore, the cable management unit includes two cable management blocks 10, which are slidably installed in two sliding ports. One side of each cable management block 10 has a cable outlet hole through which the wire 12 passes. The inner top wall of the sliding port has a groove, and a drive unit is slidably installed in the groove.

[0028] With the above structure, the radius of the outlet hole on the surface of the wire guide block 10 is slightly larger than the radius of the wire 12, which can appropriately limit the wire 12 without damaging it. After the wire guide block 10 slides once in the sliding port, its wire 12 is completely stored on the surface of the wire roller 13, avoiding excess wire 12 from being left outside the device.

[0029] Furthermore, the drive unit includes two drive blocks 16, which are slidably installed in two slide grooves. The lower sides of the two drive blocks 16 are installed on the upper sides of the two cable management blocks 10. A lead screw 15 is rotatably installed in the slide groove, and the two drive blocks 16 are screwed onto the surface of the lead screw 15.

[0030] With the above structure, the two lead screws 15 are on the same horizontal plane, and a drive block 16 is screwed onto the threaded area of ​​each lead screw 15. When the lead screw 15 rotates, it drives the drive block 16 to move, and the drive block 16 drives the cable management block 10 to move.

[0031] Furthermore, the drive unit also includes two transmission gears 17, which are fixedly installed on the non-threaded areas of the surfaces of the two lead screws 15. A drive gear 11 is fixedly installed on the surface of the wire roller 13, and the drive gear 11 meshes with the transmission gears 17.

[0032] With the above structure, two clearance openings are provided on the surface of panel 5 to allow the transmission gear 17 to pass and prevent movement restriction. By rotating the drive gear 11, the drive gear 11 drives the transmission gear 17 to rotate, thereby driving the cable management block 10.

[0033] Furthermore, a damping bearing 7 is fixedly installed on the surface of the wire roller 13, and mounting holes are opened on both sides of the wire storage box 3. The outer ring of the damping shaft is fixedly connected to the mounting hole, and a knob 6 is fixedly installed on one end of the wire roller 13.

[0034] With the above structure, the surface of the wire roller 13 is fixedly connected to the inner ring of the damping shaft, and a knob 6 is fixedly installed at its port. The outer ring of the damping shaft is installed in the mounting hole. The damping shaft can prevent the rotation of the wire roller 13 from affecting the storage of the wire 12.

[0035] Furthermore, two placement boxes 8 are fixedly installed on one side of the cable storage box 3, and rubber protective sleeves 9 are fixedly installed on the inner wall of the placement box 8.

[0036] With the above structure, an insertion hole is provided on one side of the rubber protective sleeve 9. When the detection probe 2 is not in use, it can be inserted into the rubber protective sleeve 9 to protect the metal surface of the detection probe 2 and prevent it from rusting. The connector 4 can be directly inserted into the interface on the surface of the multimeter body 1 for protection.

[0037] Working principle: When using the device, first hold the multimeter and move it to the location of the low-voltage circuit that needs to be measured. Then, manually turn the knob 6. The knob 6 drives the wire roller 13 to rotate, and the wire roller 13 drives the wire 12 to move. Release the wire 12 to a suitable length, and then stop turning the knob 6. At this time, install the connector 4 at one end of the wire 12 at the interface on the multimeter body 1. Use the other end of the wire 12 to detect the current in the low-voltage circuit, and determine whether there is a low-voltage current and its magnitude by observing the data displayed on the multimeter body 1.

[0038] After the test is completed, first pull the connector 4 out of the interface and manually turn the knob 6 in the opposite direction. The knob 6 drives the wire roller 13 to rotate in the opposite direction to retract the wire 12. During the retraction of the wire 12, the wire roller 13 drives the drive gear 11 to rotate, the drive gear 11 drives the transmission gear 17 to rotate, the transmission gear 17 drives the lead screw 15 to rotate, the lead screw 15 drives the drive block 16 to move, the drive block 16 drives the wire guide block 10 to move horizontally, and the wire guide block 10 drives the wound wire 12 to adjust horizontally so that the wire 12 is evenly wrapped around the surface of the wire roller 13 to prevent the wire 12 from getting tangled.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its scope of protection shall still fall within the protection scope of this utility model.

Claims

1. A low-voltage safety testing device, comprising a multimeter body (1), characterized in that: A wire storage box (3) is fixedly installed on the lower side of the multimeter body (1), and a wire take-up assembly is rotatably installed on the inner wall of the wire storage box (3). The take-up assembly includes two wire rollers (13). A partition (14) is fixedly installed on the inner wall of the wire storage box (3). The two wire rollers (13) are rotatably installed on both sides of the partition (14). A wire hole (18) is opened on the surface of the wire roller (13). A wire (12) is fixedly installed in the wire hole (18). The wire (12) is wound around the surface of the wire roller (13). A detection probe (2) is fixedly installed at one end of the wire (12). A connector (4) is fixedly installed at the other end of the wire (12). A panel (5) is fixedly installed on one side of the wire storage box (3). Two sliding openings are opened on one side of the panel (5). A wire management unit is slidably installed in the sliding openings.

2. The low-voltage safety detection device according to claim 1, characterized in that: The cable management unit includes two cable management blocks (10), which are slidably installed in two sliding ports. A cable outlet hole is provided on one side of each cable management block (10), through which the wire (12) passes. A sliding groove is provided on the inner top wall of the sliding port, and a drive unit is slidably installed in the sliding groove.

3. The low-voltage safety detection device according to claim 2, characterized in that: The drive unit includes two drive blocks (16), which are slidably installed in two grooves. The lower sides of the two drive blocks (16) are installed on the upper sides of two cable management blocks (10). A lead screw (15) is rotatably installed in the groove, and the two drive blocks (16) are screwed onto the surface of the lead screw (15).

4. The low-voltage safety detection device according to claim 3, characterized in that: The drive unit also includes two transmission gears (17), which are fixedly installed on the non-threaded areas of the surfaces of the two lead screws (15). A drive gear (11) is fixedly installed on the surface of the roller (13), and the drive gear (11) meshes with the transmission gear (17).

5. A low-voltage safety detection device according to claim 1, characterized in that: A damping bearing (7) is fixedly installed on the surface of the wire roller (13). Mounting holes are provided on both sides of the wire storage box (3). The outer ring of the damping bearing (7) is fixedly connected to the mounting hole. A knob (6) is fixedly installed on one end of the wire roller (13).

6. The low-voltage safety detection device according to claim 1, characterized in that: Two placement boxes (8) are fixedly installed on one side of the wire storage box (3), and a rubber protective sleeve (9) is fixedly installed on the inner wall of the placement box (8).

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