Fuse with high stability

Abstract

The utility model belongs to the technical field of electric tool battery protection, and particularly relates to a high-stability fuse which comprises a shell, one end of the shell is sleeved with a first outer cap, an opening of the first outer cap is provided with a first limiting piece, the outer side of one end of the shell is provided with a first limiting groove, and the first limiting piece is embedded into the first limiting groove. One end of the shell is sleeved with a first outer cap, the other end of the shell is sleeved with a second outer cap, the interior of the shell is hollow, a fuse wire penetrates through the interior of the shell, one end of the fuse wire is electrically connected with the first outer cap, the other end of the fuse wire is electrically connected with the second outer cap, a fixing body is arranged at the end of the fuse wire, and the end, away from the fuse wire, of the fixing body covers the surface of the first outer cap and / or the surface of the second outer cap. According to the utility model, the first limiting piece and the first limiting groove are arranged, so that the connection between the first outer cap and the shell is more stable, and the overall stability of the fuse is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power tool battery protection, and in particular relates to a fuse with strong stability. Background Art

[0002] The popularization of the power system has brought convenience to human life, but due to the frequent fire accidents caused by improper use of electricity, electricity safety has received special attention. Among them, fuses play a very important role in preventing electrical disasters. Their main function is to prevent excessive current from flowing through electronic circuits. The most important characteristic of a general fuse is its current carrying capacity. The maximum current carrying capacity of various fuses is set as a statistical value obtained through a series of tests for reference and selection by circuit designers. When excess current flows through the fuse, it will generate high temperature and cause it to melt, thereby protecting the circuit from damage. At the same time, it can also achieve the practical purpose of preventing electrical wires from catching fire and avoiding fires. The end caps of existing fuses are prone to loosening, resulting in a decrease in the quality of the fuse.

[0003] Therefore, it is urgent to propose a new technical solution to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fuse with strong stability in view of the deficiencies of the prior art, which can make the connection between the first outer cap and the shell more stable, enhance the overall stability of the fuse, and improve the quality of the fuse.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fuse with strong stability comprises a shell, one end of the shell is sleeved with a first outer cap, an opening of the first outer cap is provided with a first limiting piece, an outer side of one end of the shell is provided with a first limiting groove, the first limiting piece is embedded in the first limiting groove, the other end of the shell is sleeved with a second outer cap, the interior of the shell is hollow, a fuse is passed through the interior of the shell, one end of the fuse is electrically connected to the first outer cap, the other end of the fuse is electrically connected to the second outer cap, a fixing body is provided at the end of the fuse, and the fixing body covers the surface of the first outer cap and / or the second outer cap at one end away from the fuse.

[0007] Preferably, a second limiting member is provided at the opening of the second outer cap, a second limiting groove is provided on the outer side of the other end of the shell, and the second limiting member is embedded in the second limiting groove.

[0008] Preferably, a first blocking block is provided at one end of the first limiting member away from the first outer cap, and the first blocking block is used to prevent the first limiting member from shaking in the first limiting groove.

[0009] Preferably, a second blocking block is provided at one end of the second limiting member away from the second outer cap, and the second blocking block is used to prevent the second limiting member from shaking in the second limiting groove.

[0010] Preferably, the interior of the shell is filled with arc-extinguishing material, and the arc-extinguishing material wraps the surface of the fuse.

[0011] Preferably, a recessed portion is provided on the outer side of the end portion of the shell, and a bending piece is provided on the end portion of the fuse, and a side surface of the bending piece abuts against a surface of the recessed portion.

[0012] Preferably, a first inner cap is sleeved on one end of the shell, an end of the first inner cap is concave to form a first notch, one end of the fuse passes through the first notch and is electrically connected to the first outer cap, and the fixing body is filled between the first notch and the first outer cap.

[0013] Preferably, the other end of the shell is sleeved with a second inner cap, the end of the second inner cap is concave to form a second notch, the other end of the fuse passes through the second notch and is electrically connected to the second outer cap, and the fixing body is filled between the second notch and the second outer cap.

[0014] Preferably, a recessed portion is provided on the outer side of the end portion of the shell, and the side surface of the first inner cap and / or the second inner cap abuts against the surface of the recessed portion.

[0015] Preferably, the surface of the fuse has at least one through hole, and a plurality of the through holes are arranged at intervals along the surface of the fuse.

[0016] Preferably, the surface of the fuse has at least one groove, and a plurality of the grooves are arranged on the side of the fuse in a relatively staggered manner.

[0017] The beneficial effect of the utility model is that the utility model includes a shell, one end of the shell is sleeved with a first outer cap, the opening of the first outer cap is provided with a first stopper, the outer side of one end of the shell is provided with a first stopper groove, the first stopper groove is embedded in the first stopper groove, the other end of the shell is sleeved with a second outer cap, the interior of the shell is hollow, a fuse is passed through the interior of the shell, one end of the fuse is electrically connected to the first outer cap, the other end of the fuse is electrically connected to the second outer cap, a fixed body is provided at the end of the fuse, and the end of the fixed body away from the fuse covers the surface of the first outer cap and / or the second outer cap. The utility model is provided with a first stopper groove and a first stopper groove, the first stopper groove is embedded in the first stopper groove, and the first outer cap is not easy to be separated from the shell by the abutment between the side of the first stopper groove and the side of the first stopper groove, so that the connection between the first outer cap and the shell is more stable, the overall stability of the fuse is enhanced, and the quality of the fuse is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of Example 2 of the utility model.

[0020] Figure 3 This is a schematic diagram of the overall structure of Example 3 of the utility model.

[0021] Figure 4 This is a schematic diagram of the overall structure of Example 4 of the utility model.

[0022] Figure 5 This is a schematic diagram of the overall structure of Example 5 of the utility model.

[0023] Figure 6 This is a schematic diagram of the overall structure of the fuse of Example 6 of the utility model.

[0024] Figure 7 This is a schematic diagram of the overall structure of the fuse of Example 7 of the utility model.

[0025] Among them: 1. shell; 11. first limiting groove; 12. second limiting groove; 13. arc extinguishing material; 14. recessed portion; 2. first outer cap; 21. first limiting member; 211. first positioning block; 3. second outer cap; 31. second limiting member; 311. second positioning block; 4. fuse; 41. bending member; 42. through hole; 43. groove; 5. fixed body; 6. first inner cap; 61. first notch; 7. second inner cap; 71. second notch. DETAILED DESCRIPTION

[0026] If certain words are used in the specification and claims to refer to specific components, those skilled in the art should understand that 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. As mentioned throughout the specification and claims, "including" is an open term and 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.

[0027] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0028] The following is combined with Figures 1 to 7 The utility model is further described in detail with specific embodiments, but is not intended to limit the utility model.

[0029] Example 1

[0030] A fuse with strong stability comprises a shell 1, the shell 1 is a porcelain tube, one end of the shell 1 is sleeved with a first outer cap 2, the first outer cap 2 is used to be electrically connected to an external device, a first limiting member 21 is arranged at the opening of the first outer cap 2, a first limiting groove 11 is arranged on the outer side of one end of the shell 1, the first limiting member 21 is embedded in the first limiting groove 11, the side surface of the first limiting member 21 abuts against the side surface portion of the first limiting groove 11, the first limiting member 21 is bent at the opening of the first outer cap 2 and then embedded in the first limiting groove 11, the bending part can abut against the side edge of the first limiting groove 11, play a limiting role, prevent the first outer cap 2 from detaching from the shell 1, the end of the first limiting member 21 away from the first outer cap 2 abuts against the bottom of the first limiting groove 11, so that The first limiting member 21 is not easy to shake in the first limiting groove 11, and the other end of the shell 1 is sleeved with a second outer cap 3, and the second outer cap 3 is used to be electrically connected to an external device. The interior of the shell 1 is hollow, and a fuse 4 is passed through the interior of the shell 1, one end of the fuse 4 is electrically connected to the first outer cap 2, and the other end of the fuse 4 is electrically connected to the second outer cap 3. Both ends of the fuse 4 are provided with a fixed body 5, and the end of the fixed body 5 away from the fuse 4 covers the surface of the first outer cap 2 and / or the second outer cap 3. The fixed body 5 is used to increase the contact area between the fuse 4 and the first outer cap 2 or the second outer cap 3, improve the conductive effect of the fuse 4 and the first outer cap 2 or the second outer cap 3, and also enhance the stability of the connection between the fuse 4 and the first outer cap 2 or the second outer cap 3. The fixed body 5 is solder paste. By providing the first limiting member 21 and the first limiting groove 11, the first limiting member 21 is embedded in the first limiting groove 11, and the side surface of the first limiting member 21 abuts against the side surface of the first limiting groove 11, so that the first outer cap 2 is not easily separated from the shell 1, thereby making the connection between the first outer cap 2 and the shell 1 more stable, enhancing the overall stability of the fuse, and improving the quality of the fuse.

[0031] In this embodiment, a second limiting piece 31 is provided at the opening of the second outer cap 3, and a second limiting groove 12 is provided on the outer side of the other end of the shell 1. The second limiting piece 31 is embedded in the second limiting groove 12, and the side surface of the second limiting piece 31 abuts against the side surface portion of the second limiting groove 12. The second limiting piece 31 is bent at the opening of the second outer cap 3 and then embedded in the second limiting groove 12. The bending part can abut against the side edge of the second limiting groove 12, which plays a limiting role to prevent the second outer cap 3 from detaching from the shell 1. The end of the second limiting piece 31 away from the second outer cap 3 abuts against the bottom of the second limiting groove 12, so that the second limiting piece 31 is not easy to shake in the second limiting groove 12. By providing the second limiting member 31 and the second limiting groove 12, the second limiting member 31 is embedded in the second limiting groove 12, and the side surface of the second limiting member 31 and the side surface of the second limiting groove 12 abut against each other, so that the second outer cap 3 is not easily separated from the shell 1, thereby making the connection between the second outer cap 3 and the shell 1 more stable, enhancing the overall stability of the fuse, and improving the quality of the fuse.

[0032] Example 2

[0033] The present embodiment is different from the first embodiment in that a recessed portion 14 is provided at the outer side of the end of the housing 1, and a bent piece 41 is provided at the end of the fuse 4, and the side surface of the bent piece 41 abuts against the surface of the recessed portion 14. By providing the bent piece 41, the fixing effect between the end of the fuse 4 and the housing 1 can be enhanced, and the other side surface of the bent piece 41 is electrically connected to the inner side surface of the first outer cap 2 through the fixing body 5, which can enhance the conductive effect between the fuse 4 and the first outer cap 2. The fixing body 5 is provided in the recessed portion 14 and on the inner end surface of the first outer cap 2, which can increase the conductive area between the fuse 4 and the first outer cap 2.

[0034] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0035] Example 3

[0036] The present embodiment is different from the embodiment 1 in that a first inner cap 6 is sleeved on one end of the housing 1, the outer side surface of the first inner cap 6 is electrically connected to the inner side surface of the first outer cap 2, the end of the first inner cap 6 is concave to form a first notch 61, one end of the fuse 4 passes through the first notch 61 and is electrically connected to the first outer cap 2, and a fixing body 5 is filled between the first notch 61 and the first outer cap 2, which enhances the conductive effect between the fuse 4 and the first inner cap 6 and between the fuse 4 and the first outer cap 2. The fixing body 5 is disposed at the first notch 61, one end of the fuse 4 is electrically connected to the first inner cap 6 and the first outer cap 2 through the fixing body 5, and the first outer cap 2 is sleeved on the outer side of the first inner cap 6, which increases the conductive area between the fuse 4 and the first outer cap 2.

[0037] In this embodiment, the other end of the housing 1 is sleeved with a second inner cap 7, the outer side surface of the second inner cap 7 is electrically connected to the inner side surface of the second outer cap 3, the end of the second inner cap 7 is concave to form a second notch 71, the other end of the fuse 4 passes through the second notch 71 and is electrically connected to the second outer cap 3, and the second notch 71 and the second outer cap 3 are filled with a fixing body 5, which enhances the conductive effect between the fuse 4 and the second inner cap 7 and between the fuse 4 and the second outer cap 3. The fixing body 5 is arranged at the second notch 71, one end of the fuse 4 is electrically connected to the second inner cap 7 and the second outer cap 3 through the fixing body 5, and the second outer cap 3 is sleeved on the outside of the second inner cap 7, which increases the conductive area between the fuse 4 and the second outer cap 3.

[0038] In this embodiment, a recessed portion 14 is provided on the outer side of the end of the housing 1, and the side surface of the first inner cap 6 and / or the second inner cap 7 abuts against the surface of the recessed portion 14. By providing the recessed portion 14, part of the inner side surface of the first outer cap 2 and / or the second outer cap 3 can also abut against the surface of the housing 1, thereby enhancing stability.

[0039] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0040] Example 4

[0041] The present embodiment is different from the embodiment 1 in that the interior of the housing 1 is filled with arc extinguishing material 13, and the arc extinguishing material 13 wraps the surface of the fuse 4. By providing the arc extinguishing material 13, the arc extinguishing capability can be improved and the safety of the fuse can be improved. The arc extinguishing material 13 can be quartz sand.

[0042] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0043] Example 5

[0044] The present embodiment is different from the embodiment 1 in that a first blocking block 211 is provided at one end of the first limiting member 21 away from the first outer cap 2, and the first blocking block 211 is used to prevent the first limiting member 21 from shaking in the first limiting groove 11. The first blocking block 211 matches the first limiting groove 11, and the first blocking block 211 abuts against the bottom surface and the side surface of the first limiting groove 11, respectively, so that the first limiting member 21 can be stably limited in the first limiting groove 11, thereby enhancing the limiting effect of the first limiting member 21.

[0045] In this embodiment, a second stopper 311 is provided at one end of the second stopper 31 away from the second outer cap 3, and the second stopper 311 is used to prevent the second stopper 31 from shaking in the second stopper groove 12. The second stopper 311 matches the second stopper groove 12, and the second stopper 311 abuts against the bottom surface and the side surface of the second stopper groove 12, so that the second stopper 31 can be stably limited in the second stopper groove 12, thereby enhancing the limiting effect of the second stopper 31.

[0046] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0047] Example 6

[0048] The difference between this embodiment and the first embodiment is that the surface of the fuse 4 has at least one through hole 42, and a plurality of through holes 42 are arranged at intervals along the surface of the fuse 4. By providing the through holes 42, the voltage passing through can be divided into multiple sections, thereby achieving the purpose of voltage division, allowing the temperature of the melting point to be concentrated between a certain area, so that the discreteness of the melting time of the fuse 4 is small, the temperature rise is low, and the temperature point is more centered, effectively improving the short circuit and disconnection protection capabilities of the product.

[0049] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0050] Example 7

[0051] The difference between this embodiment and the first embodiment is that the surface of the fuse 4 has at least one groove 43, and the plurality of grooves 43 are relatively staggered on the two sides of the fuse 4. By setting the grooves 43, the voltage passing through can be divided into multiple sections, thereby achieving the purpose of voltage division, and the temperature of the melting point is concentrated between a certain area, so that the discreteness of the melting time of the fuse 4 is small, the temperature rise is low, and the temperature point is more centered, which effectively improves the short circuit and disconnection protection capabilities of the product. The grooves 43 are relatively staggered on the sides of the fuse 4, which will not reduce the conductive effect of the fuse 4, and can be fused quickly from the position of the grooves 43.

[0052] The other structures of this embodiment are the same as those of Embodiment 1 and will not be described again here.

[0053] Obviously, the utility model includes a shell, one end of the shell is sleeved with a first outer cap, the opening of the first outer cap is provided with a first stopper, the outer side of one end of the shell is provided with a first stopper groove, the first stopper groove is embedded in the first stopper groove, the other end of the shell is sleeved with a second outer cap, the interior of the shell is hollow, a fuse is passed through the interior of the shell, one end of the fuse is electrically connected to the first outer cap, the other end of the fuse is electrically connected to the second outer cap, a fixed body is provided at the end of the fuse, and the end of the fixed body away from the fuse covers the surface of the first outer cap and / or the second outer cap. The utility model makes the connection between the first outer cap and the shell more stable by providing the first stopper groove and the first stopper groove, enhances the overall stability of the fuse, and improves the quality of the fuse.

[0054] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A fuse with strong stability, characterized in that: The invention comprises a shell (1), one end of the shell (1) is sleeved with a first outer cap (2), the opening of the first outer cap (2) is provided with a first limiting member (21), the outer side of one end of the shell (1) is provided with a first limiting groove (11), the first limiting member (21) is embedded in the first limiting groove (11), the other end of the shell (1) is sleeved with a second outer cap (3), the interior of the shell (1) is hollow, a fuse (4) is passed through the interior of the shell (1), one end of the fuse (4) is electrically connected to the first outer cap (2), the other end of the fuse (4) is electrically connected to the second outer cap (3), a fixing body (5) is provided at the end of the fuse (4), and the end of the fixing body (5) away from the fuse (4) covers the surface of the first outer cap (2) and / or the second outer cap (3).

2. The strong and stable fuse as claimed in claim 1, characterized in that: A second limiting member (31) is provided at the opening of the second outer cap (3), a second limiting groove (12) is provided on the outside of the other end of the shell (1), and the second limiting member (31) is embedded in the second limiting groove (12).

3. The strong and stable fuse as claimed in claim 1, characterized in that: A first locking block (211) is provided at one end of the first limiting member (21) away from the first outer cap (2), and the first locking block (211) is used to prevent the first limiting member (21) from shaking in the first limiting groove (11).

4. The strong and stable fuse as claimed in claim 2, characterized in that: A second blocking block (311) is provided at one end of the second limiting member (31) away from the second outer cap (3), and the second blocking block (311) is used to prevent the second limiting member (31) from shaking in the second limiting groove (12).

5. The strong and stable fuse as claimed in claim 1, characterized in that: The interior of the housing (1) is filled with arc extinguishing material (13), and the arc extinguishing material (13) wraps the surface of the fuse (4).

6. The strong and stable fuse as claimed in claim 1, characterized in that: A recessed portion (14) is provided on the outer side of the end of the shell (1), and a bent piece (41) is provided on the end of the fuse (4), and the side surface of the bent piece (41) abuts against the surface of the recessed portion (14).

7. The strong and stable fuse as claimed in claim 1, characterized in that: A first inner cap (6) is sleeved on one end of the shell (1); an end of the first inner cap (6) is concave to form a first notch (61); one end of the fuse (4) passes through the first notch (61) and is electrically connected to the first outer cap (2); and the fixing body (5) is filled between the first notch (61) and the first outer cap (2).

8. The strong and stable fuse as claimed in claim 7, characterized in that: The other end of the shell (1) is sleeved with a second inner cap (7), the end of the second inner cap (7) is concave to form a second notch (71), the other end of the fuse (4) passes through the second notch (71) and is electrically connected to the second outer cap (3), and the fixing body (5) is filled between the second notch (71) and the second outer cap (3).

9. The strong fuse according to any one of claims 1 to 8, characterized in that: The surface of the fuse (4) has at least one through hole (42), and a plurality of through holes (42) are arranged at intervals along the surface of the fuse (4).

10. The strong fuse according to any one of claims 1 to 8, characterized in that: The surface of the fuse (4) has at least one groove (43), and a plurality of the grooves (43) are arranged on the side of the fuse (4) in a relatively staggered manner.

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