Over-temperature protection composite fuse

Abstract

The utility model relates to the technical field of fuses, in particular to an over-temperature protection composite fuse which comprises an insulating shell, a rotating rod is jointly and rotationally connected to the inner walls of the two ends of the insulating shell, a plurality of supporting rods are fixedly connected to the outer walls of the two ends of the rotating rod, and sliding rings are fixedly connected to the other ends of the supporting rods. After the composite fuse is damaged, the rotating rod is rotated to drive the supporting rods to rotate synchronously, the sliding rings are made to move synchronously at the same time, then the fuse is driven to move, when the complete fuse moves to the position between the second positive plate and the negative plate, the negative plate is slid, and the fuse is driven to move. When the other end of the fuse abuts against one side of the second positive plate, then the first spring is compressed, and the first positive plate is kept in contact with the fuse and the negative plate through the second positive plate. The purpose of replacing the fuse is achieved.

Description

Technical Field

[0001] The utility model relates to a fuse, in particular to an over-temperature protection composite fuse, belonging to the technical field of fuses. Background Art

[0002] Overtemperature protection composite fuses are usually composed of two or more fuse elements with different fusing characteristics. When abnormally high temperature appears in the circuit, the fuse will gradually melt according to the increase in temperature to protect the circuit and equipment from damage. When current passes through, the metal wire in the fuse element will generate heat, causing the bimetallic strip to bend due to heat. If the temperature rises to a certain level, the bimetallic strip will bend to a certain extent, disconnecting the circuit, thereby protecting the circuit and equipment. Overtemperature protection composite fuses are often used in electronic equipment to protect circuits from overheating damage to prevent equipment from overheating and possible fires and other dangerous situations.

[0003] The existing over-temperature protection composite fuse is disposable and non-resettable. Once the over-temperature protection composite fuse is disconnected, it can no longer be reset or repaired. It must be replaced with a new fuse to restore the normal operation of the circuit, resulting in increased maintenance costs.

[0004] Therefore, there is an urgent need to improve an over-temperature protection composite fuse to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide an over-temperature protection composite fuse. After the composite fuse is damaged, the rotating rod drives multiple support rods to rotate synchronously, and at the same time, multiple sliding rings are moved synchronously, and then the fuse is driven to move. When the intact fuse moves between the positive plate 2 and the negative plate, the negative plate is slid, so that one end of the negative plate and one end of the fuse are mutually abutted, and the fuse is pushed to move in the direction of the positive plate 2 in the sliding ring. When the other end of the fuse is mutually abutted with one side of the positive plate 2, the spring 1 is compressed, so that the positive plate 1 keeps contact with the fuse and the negative plate through the positive plate 2, so as to achieve the purpose of replacing the fuse.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] An over-temperature protection composite fuse comprises an insulating shell, wherein the inner walls at both ends of the insulating shell are rotatably connected to a rotating rod, the outer walls at both ends of the rotating rod are fixedly connected to a plurality of support rods, the other ends of the support rods are fixedly connected to a sliding ring, and fuses are slidably connected inside two corresponding sliding rings, one end of the insulating shell is fixedly connected to a positive plate 1 on a side below the rotating rod, a spring 1 is fixedly connected to the inner side of the positive plate 1, the other end of the spring 1 is fixedly connected to a positive plate 2, and the other end of the insulating shell is slidably connected to a negative plate corresponding to the positive plate 1.

[0008] Preferably, a sliding groove and a limiting groove are respectively opened on the inner side of the insulating shell near the negative plate, and the outer wall of the negative plate near the sliding groove is fixedly connected to a limiting plate 12-, and the limiting plate 12- corresponds to the sliding groove and the limiting groove.

[0009] Preferably, the negative electrode plate located outside the insulating shell is slidably connected to an insulating plate, a plurality of return springs are provided between the insulating plate and the insulating shell, and the other side of the insulating plate corresponds to one side of the negative electrode plate.

[0010] Preferably, slide plates are fixedly connected to the inner walls at both ends of the insulating shell, and opposite sides of the two slide plates are slidably connected to the two ends of the plurality of fuses, and sliding holes are provided on one side of the two slide plates close to the second positive plate and the negative plate.

[0011] Preferably, a slide rail which is slidably connected to an end of the fuse is fixedly connected to a side of the slide plate close to the fuse.

[0012] Preferably, the outer wall of the insulating shell close to one end of the rotating rod is rotatably connected with a rotating buckle, the inner side of the rotating buckle is fixedly connected to one end of the rotating rod, and the other side of the rotating buckle is provided with an X-shaped groove.

[0013] Preferably, a collecting chamber is provided on the lower side of the insulating shell, and the collecting chamber is located directly below the sliding hole.

[0014] The utility model has at least the following beneficial effects:

[0015] 1. After the composite fuse is damaged, the rotating rod drives multiple support rods to rotate synchronously, and at the same time, multiple sliding rings move synchronously, and then drive the fuse to move. When the intact fuse moves between the positive plate 2 and the negative plate, slide the negative plate so that one end of the negative plate and one end of the fuse collide with each other, and push the fuse to move in the sliding ring toward the positive plate 2. When the other end of the fuse and one side of the positive plate 2 collide with each other, then compress the spring 1, so that the positive plate 1 keeps in contact with the fuse and the negative plate through the positive plate 2, so as to achieve the effect of replacing the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 An isometric structural schematic diagram provided for the utility model;

[0018] Figure 2 The utility model provides an overall cross-sectional schematic diagram;

[0019] Figure 3 The utility model provides Figure 2 Figure A in the middle is a separate enlarged structural schematic diagram;

[0020] Figure 4 A separate enlarged schematic diagram of the internal structure of the insulating housing provided by the utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the limit plate 12 provided by the utility model and the sliding groove and the limit groove.

[0022] In the figure, 1. insulating shell; 2. rotating rod; 3. supporting rod; 4. sliding ring; 5. fuse; 6. positive plate 1; 7. spring 1; 8. positive plate 2; 9. negative plate; 10. sliding groove; 11. limiting groove; 12. limiting plate; 13. insulating plate; 14. reset spring; 15. sliding plate; 16. sliding hole; 17. sliding rail; 18. rotating buckle; 19. X-shaped groove; 20. collecting chamber. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] like Figure 1-Figure 5As shown, an over-temperature protection composite fuse provided in this embodiment includes an insulating shell 1, and the inner walls at both ends of the insulating shell 1 are connected to a rotating rod 2 for rotation, and the outer walls at both ends of the rotating rod 2 are fixedly connected to multiple support rods 3. When the rotating rod 2 rotates, it will drive the multiple support rods 3 to rotate synchronously, and the other end of the support rod 3 is fixedly connected to a sliding ring 4, and the corresponding two sliding rings 4 are slidably connected to the inside of the two sliding rings 4. The two corresponding sliding rings 4 mean that the two sliding rings 4 are located at the same position at both ends of the rotating rod 2. One end of the insulating shell 1 is fixedly connected to a positive plate 6 on one side below the rotating rod 2, and a spring 7 is fixedly connected to the inner side of the positive plate 6, and the other end of the spring 7 is fixedly connected to a positive plate 2 8. The spring 7 allows electricity to be passed between the positive plate 6 and the positive plate 2 8, and at the same time, the spring 7 can be compressed by contacting the positive plate 2 8 to change the distance between the positive plate 2 8 and the positive plate 6.

[0025] Among them, Figure 1-Figure 5 As shown, the other end of the insulating housing 1 is slidably connected with a negative plate 9 corresponding to the positive plate 1 6, and the negative plate 9 is in the shape of an "I". When the fuse 5 slides between the positive plate 2 8 and the negative plate 9, the negative plate 9 can be slid to push the fuse 5 to slide in the sliding ring 4, so that the other end of the fuse 5 and the positive plate 2 8 are in conflict with each other, achieving the effect of powering on. At the same time, the current passes through the fuse 5, and the fuse 5 can be used to protect the circuit.

[0026] Among them, Figure 1-Figure 5 As shown, the inner side of the insulating shell 1 near the negative plate 9 is respectively provided with a sliding groove 10 and a limiting groove 11, the sliding groove 10 and the limiting groove 11 are arranged in a cross manner, and the depth of the sliding groove 10 is greater than the depth of the limiting groove 11, the outer wall of the negative plate 9 near the sliding groove 10 is fixedly connected to the limiting plate 12, the limiting plate 12 corresponds to the sliding groove 10 and the limiting groove 11, the limiting plate 12 is in the initial state inside the sliding groove 10, when the negative plate 9 drives the limiting plate 12 from the inside of the sliding groove 10 to the positive plate 8 When sliding in the direction of , it will hit the fuse 5 located between the positive plate 2 8 and the negative plate 9. When one end of the fuse 5 hits the positive plate 2 8 and hits the positive plate 2 8, the limiting plate 12 will be separated from the connection with the sliding groove 10, and then the negative plate 9 is rotated to drive the limiting plate 12 to move the limiting plate 12 into the limiting groove 11. The limiting plate 12 is limited by the limiting groove 11, so that the limiting plate 12 and the negative plate 9 cannot move, and the positive plate 2 8 is kept connected with the fuse 5 and the negative plate 9.

[0027] Further, such as Figure 1-Figure 5As shown, the negative plate 9 located on the outside of the insulating shell 1 is slidably connected to the insulating plate 13, and a plurality of reset springs 14 are provided between the insulating plate 13 and the insulating shell 1. The other side of the insulating plate 13 corresponds to one side of the negative plate 9. Through the elastic force of the plurality of reset springs 14 on the insulating plate 13, the insulating plate 13 and one side of the negative plate 9 can be made to contact each other, thereby forming a force on the negative plate 9, so that the negative plate 9 remains stable when the limit plate 12 is located in the sliding groove 10 and the limit groove 11.

[0028] Among them, Figure 1-Figure 5 As shown, the inner walls at both ends of the insulating shell 1 are fixedly connected with slides 15, and the opposite sides of the two slides 15 are slidably connected with the two ends of the multiple fuses 5. The two slides 15 are provided with slide holes 16 on one side close to the positive plate 28 and the negative plate 9. The two slides 15 can prevent the multiple fuses 5 from sliding in the sliding ring 4 as the rotating rod 2 rotates. At the same time, the sliding hole 16 is convenient for moving the negative plate 9, so that one end of the negative plate 9 slides inside the sliding hole 16, thereby pushing the other end of the fuse 5 through the sliding hole 16 to contact the positive plate 28. The outer wall diameter of the positive plate 28 is larger than the sliding hole 16, so that the positive plate 28 cannot slide from the inside of the sliding hole 16, and the outer wall of the negative plate 9 is fixedly connected with a limit plate 12 corresponding to the sliding hole 16.

[0029] Further, such as Figure 1-Figure 5 As shown, a slide rail 17 slidably connected to the end of the fuse 5 is fixedly connected to the side of the slide plate 15 close to the fuse 5 . The slide rail 17 can reduce the friction generated when sliding with the fuse 5 , thereby protecting the fuse 5 .

[0030] Among them, Figure 1-Figure 5 As shown, the outer wall of the insulating shell 1 near one end of the rotating rod 2 is rotatably connected with a rotating buckle 18, and the inner side of the rotating buckle 18 is fixedly connected to one end of the rotating rod 2. The rotating rod 2 can be driven to rotate by rotating the rotating buckle 18. An X-shaped groove 19 is provided on the other side of the rotating buckle 18, and the X-shaped groove 19 facilitates the rotation of the rotating buckle 18.

[0031] Among them, Figure 1-Figure 5 As shown, a collecting chamber 20 is provided on the lower side of the insulating shell 1, and the collecting chamber 20 is located directly below the sliding hole 16. The fuse 5 will melt and disconnect the circuit when the current is too large and the heat is too high. The damaged fuse 5 will slide from the inside of the sliding ring 4 under the action of the positive plate 8 and finally fall into the collecting chamber 20.

[0032] like Figure 1-Figure 5As shown, the principle of an over-temperature protection composite fuse provided in this embodiment is as follows: after the composite fuse is damaged, the rotating rod 2 is driven by the rotating buckle 18 to drive multiple support rods 3 to rotate synchronously, and at the same time, multiple sliding rings 4 are moved synchronously, and then the fuse 5 is driven to move. When the intact fuse 5 moves between the positive plate 2 8 and the negative plate 9, the negative plate 9 is slid so that one end of the negative plate 9 and one end of the fuse 5 are in conflict with each other, and the fuse 5 is pushed to move in the direction of the positive plate 2 8 in the sliding ring 4. When the other end of the fuse 5 and one side of the positive plate 2 8 are in conflict with each other, the spring 1 7 is compressed, so that the positive plate 1 6 is connected with the fuse 5 and the negative plate 9 through the positive plate 2 8, and the negative plate 9 is rotated to rotate the limit plate 12 into the limit groove 11.

[0033] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0034] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0035] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An over-temperature protection composite fuse, comprising an insulating housing (1), characterized in that: The inner walls at both ends of the insulating shell (1) are rotatably connected to a rotating rod (2), the outer walls at both ends of the rotating rod (2) are fixedly connected to a plurality of support rods (3), the other end of the support rod (3) is fixedly connected to a sliding ring (4), and two corresponding sliding rings (4) are slidably connected to fuses (5) inside, one end of the insulating shell (1) is fixedly connected to a positive plate (6) located below the rotating rod (2), the inner side of the positive plate (6) is fixedly connected to a spring (7), the other end of the spring (7) is fixedly connected to a positive plate (8), and the other end of the insulating shell (1) is slidably connected to a negative plate (9) corresponding to the positive plate (6).

2. The over-temperature protection composite fuse according to claim 1, characterized in that: The insulating shell (1) is provided with a sliding groove (10) and a limiting groove (11) on the inner side close to the negative electrode plate (9), and the negative electrode plate (9) is fixedly connected to the outer wall of the sliding groove (10) close to the limiting plate (12), and the limiting plate (12) corresponds to the sliding groove (10) and the limiting groove (11).

3. The over-temperature protection composite fuse according to claim 1, characterized in that: The negative electrode plate (9) located outside the insulating shell (1) is slidably connected to an insulating plate (13), a plurality of return springs (14) are provided between the insulating plate (13) and the insulating shell (1), and the other side of the insulating plate (13) corresponds to one side of the negative electrode plate (9).

4. The over-temperature protection composite fuse according to claim 1, characterized in that: Slide plates (15) are fixedly connected to the inner walls at both ends of the insulating shell (1), and opposite sides of the two slide plates (15) are slidably connected to the two ends of the plurality of fuses (5). Sliding holes (16) are provided on one side of the two slide plates (15) close to the second positive electrode plate (8) and the negative electrode plate (9).

5. The over-temperature protection composite fuse according to claim 4, characterized in that: A slide rail (17) which is slidably connected to the end of the fuse (5) is fixedly connected to the side of the slide plate (15) close to the fuse (5).

6. The over-temperature protection composite fuse according to claim 5, characterized in that: The outer wall of the insulating housing (1) near one end of the rotating rod (2) is rotatably connected to a rotating buckle (18); the inner side of the rotating buckle (18) is fixedly connected to one end of the rotating rod (2); and the other side of the rotating buckle (18) is provided with an X-shaped groove (19).

7. The over-temperature protection composite fuse according to claim 6, characterized in that: A collecting chamber (20) is provided on the lower side of the insulating housing (1), and the collecting chamber (20) is located directly below the sliding hole (16).

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