Fuse with waterproof structure

Abstract

The utility model relates to the technical field of fuses, and discloses a fuse with a waterproof structure, which comprises a frame body, the inner top surface of the frame body is fixedly connected with a shell, and the shell is internally provided with a switching assembly. According to the fuse with the waterproof structure, through the arrangement of the rotating frame, the transverse strip and the rubber pad, the sealing degree of the device is improved, water vapor is prevented from invading the interior of the fuse, and the probability of occurrence of accidents such as equipment short circuit and electric leakage is reduced; the fused fuse body rotates to cancel the abutting connection with the binding post, an intact fuse body abuts against the binding post, replacement of the fuse body is achieved, the shell does not need to be disassembled or a fuse wire does not need to be installed again, the equipment maintenance time is shortened, the friction force between the abutting block and the frame body is improved through the sealing ring, and the service life of the fuse body is prolonged. Therefore, the abutting block can be inserted on the frame body more stably.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically a fuse with a waterproof structure. Background Technology

[0002] A fuse is a current protection device that breaks the circuit by melting a fusible element due to the heat generated when the current exceeds a specified value for a period of time. Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors. They are one of the most commonly used protective devices.

[0003] According to a publicized application for a waterproof fuse device (publication number: CN215417942U), the above application includes a mounting base and a cover plate. A fuse is connected to the top outer side of the mounting base, and heat-conducting plates are provided on both outer sides of the fuse. A connecting groove is provided at the bottom center of the mounting base, and wire passages are provided on both inner sides of the connecting groove. Cooling fans are connected to the bottom sides of the heat-conducting plates.

[0004] However, in actual use, if the above-mentioned fuse blows, the cover plate must first be removed, the blown fuse wire removed, and then a new fuse wire installed. This involves many steps, increases maintenance time, and is not conducive to quickly restoring equipment operation. In view of this, we propose a fuse with a waterproof structure. Utility Model Content

[0005] The purpose of this invention is to provide a fuse with a waterproof structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fuse with a waterproof structure, comprising a frame, a housing fixedly connected to the inner top surface of the frame, and a switching assembly disposed inside the housing, the switching assembly comprising:

[0007] A rotating shaft is rotatably connected to the inner wall of the frame. A rotating frame is fixedly connected to the side wall of the rotating shaft. The inner wall of the rotating frame is inserted into the fuse body. A handle is fixedly connected to the end of the rotating shaft away from the rotating frame.

[0008] A horizontal bar is fixedly connected to the outer wall of the rotating frame;

[0009] An abutment block is inserted into the outer wall of the frame, and the abutment block abuts against the fuse body.

[0010] Preferably, a sealing ring is fixedly connected to the outer wall of the abutment block, and the sealing ring is movably connected to the inner wall of the frame.

[0011] Preferably, a terminal block is fixedly connected to the inner wall of the frame, the terminal block abuts against the fuse body, a wiring groove is provided at the end of the terminal block away from the fuse body, and a heat shrink tubing is fixedly connected to the outer wall of the wiring groove.

[0012] Preferably, a rubber pad is fitted onto the side wall of the rotating shaft, and the rubber pad is movably connected to the inner wall of the frame. The rubber pad improves the waterproof performance of the connection between the rotating shaft and the frame, reducing the possibility of water entering the shell.

[0013] Preferably, the inner top surface of the frame is provided with a horizontal groove, which is adapted to a horizontal bar. The horizontal bar is a rubber strip. When the rotating frame rotates, the horizontal bar is first squeezed and deformed against the top of the frame. When the horizontal bar rotates to the top, it is stuck in the horizontal groove, and the resistance to rotation suddenly decreases, thereby indicating to the operator that the fuse body has been rotated into place.

[0014] Preferably, the fuse body is provided in three sets. The three sets of fuse bodies are inserted into the rotating frame. The fuse body of the uppermost set abuts against the terminal block. The two sets of fuse bodies are at the bottom, so that the center of gravity of the rotating frame is lower and more stable.

[0015] Compared with the prior art, this utility model provides a fuse with a waterproof structure, which has the following advantages:

[0016] 1. This waterproof fuse, through its rotating frame, crossbars, and rubber pads, enhances the sealing of the device, preventing moisture from entering the fuse and reducing the probability of short circuits, leakage, and other accidents. When the fuse blows due to excessive current, turning the handle rotates the shaft and frame, causing the blown fuse body to disengage from the terminal block. This allows for the replacement of the fuse body without disassembling the casing or reinstalling the fuse wire, reducing equipment maintenance time. During rotation, the rubber crossbars press against the top surface of the frame until they engage in the transverse groove, where the resistance suddenly decreases, providing clear operational feedback to the operator that the fuse body has been switched to the correct position, reducing the possibility of misoperation.

[0017] 2. This waterproof fuse, through the setting of the sealing ring, the elastic deformation of the sealing ring fills the gap between the abutment block and the frame, reducing the possibility of moisture entering the housing through the sealing ring and the frame. At the same time, the sealing ring increases the friction between the abutment block and the frame, so that the abutment block can be inserted into the frame more stably. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2This is a schematic diagram of the cross-sectional structure of the frame of this utility model;

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the structure of region A in the middle;

[0021] Figure 4 This is a schematic diagram of the frame structure of this utility model from below;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the terminal block of this utility model.

[0023] In the diagram: 1. Frame; 2. Housing; 3. Terminal block; 4. Wiring groove; 5. Switching assembly; 501. Shaft; 502. Rotating frame; 503. Fuse body; 504. Handle; 505. Rubber pad; 506. Horizontal bar; 507. Horizontal groove; 508. Abutment block; 6. Heat shrink tubing; 7. Sealing ring. Detailed Implementation

[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a fuse with a waterproof structure, including a frame 1, a housing 2 fixedly connected to the inner top surface of the frame 1, a terminal post 3 fixedly connected to the inner wall of the frame 1, the terminal post 3 abutting against the fuse body 503, a wiring groove 4 opened at the end of the terminal post 3 away from the fuse body 503, a heat shrink tubing 6 fixedly connected to the outer wall of the wiring groove 4, the heat shrink tubing 6 is heated after wiring to make the heat shrink tubing 6 tightly fit against the outer wall of the wire to prevent moisture intrusion, a switching assembly 5 is provided inside the housing 2, the switching assembly 5 includes a rotating shaft 501, a rotating frame 502, a fuse body 503, a handle 504, a rubber pad 505, a horizontal bar 506, a horizontal groove 507, and an abutment block 508.

[0025] In one embodiment of this utility model, the rotating shaft 501 is rotatably connected to the inner wall of the frame 1. A rubber pad 505 is sleeved on the side wall of the rotating shaft 501. The rubber pad 505 is movably connected to the inner wall of the frame 1. The rubber pad 505 improves the waterproof performance of the connection between the rotating shaft 501 and the frame 1, reducing the possibility of water entering the shell 2. A rotating frame 502 is fixedly connected to the side wall of the rotating shaft 501. Three sets of fuse bodies 503 are provided. The three sets of fuse bodies 503 are inserted into the rotating frame 502. The fuse body 503 of the uppermost set abuts against the terminal 3. The two sets of fuse bodies 503 are at the bottom, so that the center of gravity of the rotating frame 502 is lower, which makes it more stable. The inner wall of the rotating frame 502 is inserted into the fuse body 503. A handle 504 is fixedly connected to the end of the rotating shaft 501 away from the rotating frame 502.

[0026] A horizontal bar 506 is fixedly connected to the outer wall of the rotating frame 502. A horizontal groove 507 is provided on the top surface of the inner side of the frame 1. The horizontal groove 507 is adapted to the horizontal bar 506. The horizontal bar 506 is a rubber strip. When the rotating frame 502 rotates, the horizontal bar 506 is first squeezed and deformed against the top of the frame 1. When the horizontal bar 506 rotates to the top, it is stuck in the horizontal groove 507. The resistance to rotation suddenly decreases, which in turn indicates to the operator that the fuse body 503 has been rotated into place. An abutment block 508 is inserted into the outer wall of the frame 1. The abutment block 508 abuts against the fuse body 503.

[0027] When the fuse body 503 blows due to excessive current, turn the handle 504 to drive the rotating shaft 501 and the rotating frame 502 to rotate, causing the blown fuse body 503 to rotate and cancel its contact with the terminal 3. Then, a good fuse body 503 is connected to the terminal 3, realizing the replacement of the fuse body 503 without disassembling the housing 2 or reinstalling the fuse, thus reducing equipment maintenance time.

[0028] When rotating, the rubber crossbar 506 presses against the top surface of the frame 1 until it is engaged in the cross groove 507. The resistance suddenly decreases, providing clear operational feedback and indicating to the operator that the fuse body 503 has been switched to the correct position, reducing the possibility of misoperation. Two of the three sets of fuse bodies 503 are located below the rotating frame 502, which lowers the center of gravity of the rotating frame 502, thereby making the switching component 5 more stable during use and preventing the fuse body 503 from breaking off from the terminal block 3 during use.

[0029] When replacing the faulty fuse body 503, pull out the abutment block 508, push in the new fuse body 503, and the new fuse body 503 will push the faulty fuse body 503 to move outward of the frame 1, so that the faulty fuse body 503 can be pulled out. Then, reinsert the abutment block 508, and the abutment block 508 will abut against both ends of the fuse body 503, so that the fuse body 503 is centered and moves into place.

[0030] By incorporating heat shrink tubing 6 and rubber gasket 505, the sealing of the device is improved, preventing moisture from entering the fuse and reducing the probability of accidents such as short circuits and leakage.

[0031] In addition, a sealing ring 7 is fixedly connected to the outer wall of the abutment block 508. The sealing ring 7 is movably connected to the inner wall of the frame 1. After the sealing ring 7 is movably connected to the inner wall of the frame 1, the elastic deformation of the sealing ring 7 fills the gap between the abutment block 508 and the frame 1, reducing the possibility of moisture entering the interior of the shell 2 through the sealing ring 7 and the frame 1. At the same time, the sealing ring 7 increases the friction between the abutment block 508 and the frame 1, so that the abutment block 508 can be inserted into the frame 1 more stably.

[0032] In this utility model, when in use, rotating the handle 504 drives the rotating shaft 501 and the rotating frame 502 to rotate, causing the blown fuse body 503 to rotate and cancel its contact with the terminal 3, allowing a good fuse body 503 to contact the terminal 3, thus replacing the fuse body 503. The abutment block 508 is pulled out, and by pushing in the new fuse body 503, the new fuse body 503 pushes the broken fuse body 503 to move outward of the frame 1, thereby allowing the broken fuse body 503 to be pulled out. Then, the abutment block 508 is reinserted, and the abutment block 508 contacts both ends of the fuse body 503, centering the fuse body 503 and moving it into place.

[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A fuse with a waterproof structure, comprising a frame (1), wherein a housing (2) is fixedly connected to the inner top surface of the frame (1), characterized in that: The housing (2) is provided with a switching component (5), which includes: A rotating shaft (501) is rotatably connected to the inner wall of the frame (1). A rotating frame (502) is fixedly connected to the side wall of the rotating shaft (501). The inner wall of the rotating frame (502) is inserted into the fuse body (503). A handle (504) is fixedly connected to the end of the rotating shaft (501) away from the rotating frame (502). A horizontal bar (506) is fixedly connected to the outer wall of the rotating frame (502); Abutting block (508) is inserted into the outer wall of the frame (1), and the abutting block (508) abuts against the fuse body (503).

2. A fuse with a waterproof structure according to claim 1, characterized in that: A sealing ring (7) is fixedly connected to the outer wall of the abutment block (508), and the sealing ring (7) is movably connected to the inner wall of the frame (1).

3. A fuse with a waterproof structure according to claim 1, characterized in that: The inner wall of the frame (1) is fixedly connected with a terminal block (3), which abuts against the fuse body (503). A wiring groove (4) is provided at the end of the terminal block (3) away from the fuse body (503), and a heat shrink tubing (6) is fixedly connected to the outer wall of the wiring groove (4).

4. A fuse with a waterproof structure according to claim 1, characterized in that: A rubber pad (505) is fitted onto the side wall of the rotating shaft (501), and the rubber pad (505) is movably connected to the inner wall of the frame (1).

5. A fuse with a waterproof structure according to claim 1, characterized in that: The frame (1) has a horizontal groove (507) on its inner top surface. The horizontal groove (507) is adapted to the horizontal bar (506), which is a rubber strip.

6. A fuse with a waterproof structure according to claim 1, characterized in that: The number of fuse bodies (503) is set in three sets, and the three sets of fuse bodies (503) are inserted into the rotating frame (502).

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