Fuse type disconnecting switch

Abstract

The utility model discloses a fuse type disconnecting switch, which comprises a base, a flip cover and a fuse, one end of the flip cover is hinged on the base, the flip cover is provided with at least one connecting seat, the connecting seat is provided with a sliding groove, the fuse is provided with a connecting part, the connecting part is arranged in the sliding groove in a sliding mode, and the connecting part is provided with a connecting rod. The fuse is provided with a sliding groove, elastic pieces are arranged on the two sides of the sliding groove and act on the two sides of the connecting part, so that the fuse is fixedly connected with the connecting base, the connecting part is provided with a lifting ejector rod, and the ejector rod is used for enabling the connecting part to be separated from the elastic pieces. By means of the sliding groove and the elastic piece, the fuse can be connected and fixed with the connecting base without accurate alignment, rapid disassembly of the fuse and the connecting base can be relieved by pushing the ejector rod, the operability of the product is greatly improved, meanwhile, the design effectively overcomes the problems of disassembly and assembly caused by poor sight, and the safety of the product is improved. And the convenience and high efficiency of the product in the disassembly and assembly process are ensured.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a fuse-type disconnect switch. Background Technology

[0002] Fuse-type disconnect switches are important switching devices in low-voltage power distribution systems. They work by melting the fusible element with the heat generated when the current exceeds a specified value for a period of time, thereby breaking the circuit. Their main functions are as power switches, disconnect switches, emergency switches, and AC circuit protection in power distribution circuits and motor circuits with high short-circuit currents.

[0003] Existing disconnect switches can switch the fuse on and off by flipping the cover on the base. However, when the fuse is damaged, it needs to be replaced, which requires removing the fuse from the cover. However, the disconnect switch is installed at a high position, resulting in poor visibility and difficulties in disassembly or assembly. Therefore, the applicant has made a useful design and found a way to solve the above problems. The technical solution to be introduced below is produced in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional fuse-type disconnect switch design and to provide a product that is quick to operate, easy to assemble and disassemble, and has a simplified operation process.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A fuse-type disconnect switch includes a base, a flip cover hinged thereon at one end, and a fuse. The flip cover has at least one connecting seat, the connecting seat has a sliding groove, the fuse has a connecting part, the connecting part is slidably disposed in the sliding groove, elastic elements are provided on both sides of the sliding groove, and act on both sides of the connecting part to connect and fix the fuse to the connecting seat. The connecting part has a liftable top rod, the top rod is used to disengage the connecting part from the elastic elements.

[0007] Preferably, the connecting part has a cavity, and the two ends of the cavity have through holes for the push rod to pass through.

[0008] Preferably, the push rod is provided with a retaining ring, which is slidably disposed in the cavity. One end of the cavity is provided with a spring, which applies an upward force to the retaining ring. The push rod is provided with a pressing part.

[0009] Preferably, the connecting part has a first extension at both ends on one side and is connected and fixed to the fuse.

[0010] Preferably, the chute is provided with a through groove through which the first extension passes, and the inlet of the through groove is provided with an inclined surface.

[0011] Preferably, the flip cover has a first groove for accommodating the connecting seat, and second grooves are provided on both sides of the first groove.

[0012] Preferably, the connecting seat has second extensions on both sides and is disposed in the second groove.

[0013] Preferably, one end of the connecting seat is provided with a pressure-bearing part, and both sides of the connecting seat are provided with fixing grooves, one of which is close to the pressure-bearing part.

[0014] Preferably, the elastic element has fixing parts on both sides and is inserted into the fixing groove. The fixing parts have anti-retraction parts and are tightly abutted against the side wall of the fixing groove.

[0015] Beneficial effects:

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention utilizes a sliding groove to allow the fuse to smoothly slide along a preset trajectory into a designated position. Applying a downward force to the fuse causes the elastic element to expand outwards. At this point, the connecting part touches the bottom of the sliding groove, and the elastic element then applies force to the connecting part, ensuring a secure fixation between the fuse and the connecting seat. When the fuse needs to be disassembled, simply applying a certain downward pressure to the push rod causes the connecting part to detach from the elastic element, achieving rapid separation. This design avoids the complexity of precise alignment between the fuse and connecting components, simplifying the operation process. Simply pushing the push rod allows for rapid disassembly of the fuse and connecting seat, greatly improving the product's ease of operation. Furthermore, this design effectively overcomes the difficulties of disassembly and assembly caused by poor visibility, ensuring convenience and efficiency during the product's assembly and disassembly process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a fuse-type disconnect switch of this utility model during rotation;

[0019] Figure 2 This is a side cross-sectional view of a fuse-type disconnector according to the present invention. Figure 1 ;

[0020] Figure 3 This utility model Figure 2 A partial enlarged view A of a fuse-type disconnector;

[0021] Figure 4 This utility model Figure 2 A partial enlarged view (B) of a fuse-type disconnector;

[0022] Figure 5This is a schematic diagram of the structure of a fuse-type disconnect switch according to this utility model;

[0023] Figure 6 This is a side cross-sectional view of a fuse-type disconnector according to the present invention. Figure 2 ;

[0024] Figure 7 This utility model Figure 6 A partial enlarged view (C) of a fuse-type disconnector;

[0025] Figure 8 This is a schematic diagram of the flip cover structure of a fuse-type disconnect switch according to this utility model;

[0026] Figure 9 This is a schematic diagram of the fuse of a fuse-type disconnect switch according to the present invention;

[0027] Figure 10 This is an exploded structural diagram of the connection base of a fuse-type disconnect switch according to this utility model;

[0028] The correspondence between the labels and component names in the attached figures is as follows:

[0029] Reference numerals: 1. Base; 2. Flip cover; 3. Fuse; 4. Connecting seat; 5. Elastic element; 6. Top rod; 7. Spring; 21. First groove; 22. Second groove; 31. Connecting part; 32. Cavity; 33. Through hole; 34. First extension; 41. Slide groove; 42. Through groove; 43. Inclined surface; 44. Second extension; 45. Pressure bearing part; 46. Fixing groove; 51. Fixing part; 52. Anti-reverse part; 61. Retaining ring; 62. Pressing part. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0032] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0033] Reference example Figures 1 to 10 A fuse-type disconnect switch includes a base 1, a flip cover 2 hinged to one end thereon, and a fuse 3. The flip cover 2 is provided with at least one connecting seat 4. The connecting seat 4 is provided with a sliding groove 41. The fuse 3 is provided with a connecting part 31. The connecting part 31 is slidably disposed in the sliding groove 41. Elastic members 5 are provided on both sides of the sliding groove 41 and act on both sides of the connecting part 31 to connect and fix the fuse 3 to the connecting seat 4. The connecting part 31 is provided with a liftable top rod 6. The top rod 6 is used to disengage the connecting part 31 from the elastic members 5.

[0034] It is worth mentioning that the connecting part 31 is provided with a cavity 32, and the two ends of the cavity 32 are provided with through holes 33 for the push rod 6 to pass through. The cavity 32 provides a space for the spring 7 to be accommodated.

[0035] It is worth mentioning that the push rod 6 is provided with a retaining ring 61, which is slidably disposed in the cavity 32. One end of the cavity 32 is provided with a spring 7, which applies an upward force to the retaining ring 61. The push rod 6 is provided with a pressing part 62, which allows the operator to apply downward pressure to the push rod 6.

[0036] It is worth mentioning that the connecting part 31 has a first extension 34 at both ends on one side, which is connected and fixed to the fuse 3. The connecting part 31 and the first extension 34 form a convex shape.

[0037] It is worth mentioning that the slide 41 is provided with a through groove 42 for the first extension 34 to pass through. The entrance of the through groove 42 is provided with an inclined surface 43. The through groove 42 prevents the connecting part 31 from disengaging from the slide 41, and the inclined surface 43 guides the connecting part 31 to quickly enter the through groove 42.

[0038] It is worth mentioning that the flip cover 2 is provided with a first groove 21 for accommodating the connecting seat 4, and second grooves 22 are provided on both sides of the first groove 21. When installing the connecting seat 4, an inward force is applied to one side of the connecting seat 4 so that one of the second extensions 44 enters the second groove 22 first, and then the above installation steps are repeated so that the other second extension 44 enters the second groove 22.

[0039] It is worth mentioning that the connecting seat 4 is provided with second extensions 44 on both sides and is provided in the second groove 22. The second extensions 44 and the second groove 22 abut against each other, thereby preventing the connecting seat 4 from disengaging from the first groove 21.

[0040] It is worth mentioning that one end of the connecting seat 4 is provided with a pressure bearing part 45, and the two sides of the connecting seat 4 are provided with fixing grooves 46. One of the fixing grooves 46 is close to the pressure bearing part 45. The pressure bearing part 45 puts the fuse 3 in a preset installation position, and the fixing groove 46 puts the elastic element 5 close to the pressure bearing part 45, which works in conjunction with the push rod 6.

[0041] It is worth mentioning that the elastic member 5 has a fixing part 51 on both sides and is inserted into the fixing groove 46. The fixing part 51 has a backstop part 52 and is tightly against the side wall of the fixing groove 46. The elastic member 5 is arc-shaped and is connected and fixed to the fixing groove 46 by interference fit through the backstop part 52.

[0042] The working principle of this utility model is described as follows:

[0043] The connecting part 31 is inserted into the slide groove 41. The slide groove 41 allows the fuse 3 to slide smoothly along the preset track into the designated position. The downward force is applied to the fuse 3, causing the elastic element 5 to expand outward. At this time, the connecting part 31 touches the bottom of the slide groove 41, and the elastic element 5 applies force to the connecting part 31 to ensure the firm fixation between the fuse 3 and the connecting seat 4.

[0044] When it is necessary to remove the fuse 3, simply apply a certain downward pressure to the pressing part 62. At the same time, the spring 7 is compressed and put into an energy storage state. After the push rod 6 touches the pressure bearing part 45, it pushes the fuse 3 to rise. The connecting part 31 will then be separated from the action of the elastic element 5, achieving rapid separation. When the force applied to the pressing part 62 is released, the spring 7 drives the push rod 6 to quickly return to its original position.

[0045] The above design avoids the complexity of precise alignment between the fuse 3 and the connecting part 31, simplifies the operation process, and allows for quick disassembly of the fuse 3 and the connecting seat 4 simply by pushing the push rod 6, greatly improving the ease of operation of the product. At the same time, the design effectively overcomes the difficulties of disassembly and assembly caused by poor visibility, ensuring the convenience and efficiency of the product during disassembly and assembly.

[0046] The above design scheme enables the product to achieve the advantages of quick operation, rapid assembly and disassembly, and simplified operation process.

[0047] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A fuse-type disconnect switch, comprising a base (1), a flip cover (2) hinged thereon at one end, and a fuse (3), characterized in that: The flip cover (2) is provided with at least one connecting seat (4), the connecting seat (4) is provided with a sliding groove (41), the fuse (3) is provided with a connecting part (31), the connecting part (31) is slidably disposed in the sliding groove (41), the sliding groove (41) is provided with elastic elements (5) on both sides, and acts on both sides of the connecting part (31) to connect and fix the fuse (3) to the connecting seat (4), the connecting part (31) is provided with a liftable top rod (6), the top rod (6) is used to disengage the connecting part (31) from the elastic element (5).

2. The fuse-type disconnector according to claim 1, characterized in that: The connecting part (31) is provided with a cavity (32), and the two ends of the cavity (32) are provided with through holes (33) for the top rod (6) to pass through.

3. The fuse-type disconnector according to claim 2, characterized in that: The top rod (6) is provided with a retaining ring (61), which is slidably disposed in the cavity (32). One end of the cavity (32) is provided with a spring (7), which applies an upward force to the retaining ring (61). The top rod (6) is provided with a pressing part (62).

4. The fuse-type disconnect switch according to claim 1, characterized in that: The connecting part (31) has a first extension (34) at both ends on one side, and is connected and fixed to the fuse (3).

5. The fuse-type disconnect switch according to claim 4, characterized in that: The chute (41) is provided with a through groove (42) through which the first extension (34) passes, and the inlet of the through groove (42) is provided with an inclined surface (43).

6. The fuse-type disconnector according to claim 1, characterized in that: The flip cover (2) is provided with a first groove (21) for accommodating the connecting seat (4), and second grooves (22) are provided on both sides of the first groove (21).

7. The fuse-type disconnector according to claim 6, characterized in that: The connecting seat (4) has a second extension (44) on both sides and is provided in the second groove (22).

8. The fuse-type disconnect switch according to claim 1, characterized in that: One end of the connecting seat (4) is provided with a pressure bearing part (45), and the two sides of the connecting seat (4) are provided with fixing grooves (46), one of the fixing grooves (46) being close to the pressure bearing part (45).

9. The fuse-type disconnector according to claim 8, characterized in that: The elastic member (5) has fixing parts (51) on both sides and is inserted into the fixing groove (46). The fixing part (51) has a backstop part (52) and is tightly against the side wall of the fixing groove (46).

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