Fuse with fool-proof structure

Abstract

The utility model relates to the technical field of fuses, in particular to a fuse with a fool-proof structure, which comprises a base and a fool-proof assembly. The base comprises a main body and a cover body, an installation groove is formed in the main body, an indicator is arranged at one end of the installation groove and located at the movable end of the cover body, the cover body is rotationally connected to the main body, an installation frame is arranged on the cover body, a fusible core is installed in the installation frame, and a protruding block is arranged at the end, provided with a pop-up block, of the fusible core. The fool-proof assembly comprises an abutting plate and a reset piece, the abutting plate is rotationally connected to the mounting frame, the movable end of the abutting plate extends into the mounting frame, the end, extending to the mounting frame, of the abutting plate can abut against the protruding block, and the reset piece is mounted between the abutting plate and the mounting frame and used for driving the abutting plate to rotate towards the side where the fusible core is mounted. The abutting plate is used for limiting the protruding block, so that the end with the protruding block cannot be inserted into the mounting frame, and a wrong mounting mode is avoided. The fusible core mounting structure has the effect that the fusible core is correctly mounted in the base.

Description

Technical Field

[0001] The present application relates to the technical field of fuses, and in particular to a fuse with an anti-fooling structure. Background Art

[0002] A fuse is an electrical protection device, usually including a base and a fuse core. Fuses are widely used in power systems and electronic devices to prevent circuit damage caused by overload and short circuit. Its working principle is to utilize the melting point of the fuse core. When the current in the circuit exceeds a predetermined value, the fuse core quickly melts, thereby cutting off the current and protecting the circuit.

[0003] In order to facilitate the identification and alarm of the fuse core melting, an alarm indicator is usually provided in the base. In order to facilitate the accurate display of the state of the fuse core by the indicator, a structure for triggering the indicator is usually provided in the fuse core.

[0004] Referring to Figure 1 , the fuse core 101 includes a porcelain tube 102, end caps 103, and a fuse wire 104. One end of the fuse core 101 is provided with a spring 105 and a pop-up block 106. One end of the spring 105 is fixedly connected to the porcelain tube 102, and the other end is fixedly connected to the pop-up block 106. The pop-up block 106 is inserted into the end cap 103, and one side of the pop-up block 106 located inside the porcelain tube 102 is fixedly connected to the fuse wire 104, so that the pop-up block 106 compresses the spring 105 under the traction of the fuse wire 104. When the fuse wire 104 melts, the pop-up block 106 pops out under the drive of the spring 105, thereby causing the alarm indicator to alarm.

[0005] In view of the above related technologies, during the installation process of the fuse core, both ends of the fuse core can be installed inside the base, so there is a situation where the end with the pop-up block does not correspond to one end of the indicator. Therefore, when the fuse core is installed reversely, the indicator cannot correctly display the state of the fuse core. Utility Model Content

[0006] In order to correctly install the fuse core in the base, the present application provides a fuse with an anti-fooling structure.

[0007] The fuse with an anti-fooling structure provided by the present application adopts the following technical solutions:

[0008] A fuse with an anti-fooling structure, comprising:

[0009] A base, including a main body and a cover body. An installation groove is formed on the main body. One end of the installation groove is provided with an indicator. The indicator is located at the movable end of the cover body. The cover body is rotatably connected to the main body. An installation frame is provided on the cover body, and a fuse core is installed in the installation frame. One end of the fuse core with a pop-up block is provided with a convex block;

[0010] The anti-fooling component includes a butting plate and a resetting member. The butting plate is rotatably connected to the mounting bracket. The movable end of the butting plate extends into the mounting bracket, and one end extending into the mounting bracket can abut against the bump. The resetting member is installed between the butting plate and the mounting bracket, and the resetting member is used to drive the butting plate to rotate towards the side where the fuse core is installed.

[0011] By adopting the above technical solution, when installing the fuse core, when the end of the fuse core with the bump is installed on the mounting bracket, the butting plate abuts against the bump, thereby preventing the fuse core from being continuously installed in the mounting bracket, and further avoiding incorrect installation methods.

[0012] When the flat end of the fuse core is installed on the mounting bracket, the butting plate abuts against the parallel fuse core, and the part where the butting plate does not abut against the force. Therefore, the butting plate continuously rotates during the installation process of the fuse core, so that the fuse core can be correctly inserted on the mounting bracket.

[0013] After the fuse core is correctly inserted on the mounting bracket, the bump is located on the rotating side of the cover. Rotate the cover so that the mounting bracket and the fuse core are located in the mounting groove of the main body. At this time, the position of the bump corresponds to that of the indicator. When the fuse wire in the fuse core melts, the ejecting block ejects to drive the indicator to give an alarm, so as to correctly judge the state of the fuse core.

[0014] By using the cooperation of the butting plate and the resetting member, the fuse core is correctly installed in the base, so that the fuse can give an alarm normally.

[0015] Optionally, the anti-fooling component further includes a mounting block. The mounting block is installed on the mounting bracket. A rotating rod is fixedly connected to the mounting block. The butting plate is rotatably connected to the rotating rod. The resetting member is sleeved on the rotating rod. The resetting member is a torsion spring. One end of the torsion spring is fixedly connected to the rotating rod, and the other end is fixedly connected to the butting plate to drive the butting plate to rotate towards the movable end of the cover.

[0016] By adopting the above technical solution, the rotating rod is fixedly connected to the mounting block, and the cooperation of the torsion spring and the rotating rod is used to drive the butting plate to rotate towards the movable end of the cover, so that each time the fuse core is inserted into the mounting bracket, the butting plate can stably abut against the fuse core.

[0017] Optionally, a plugging groove is formed on the mounting bracket, and the mounting block is inserted into the plugging groove.

[0018] By adopting the above technical solution, the mounting block is arranged to be pluggable, which is convenient for separately manufacturing the mounting bracket and the anti-fooling component. After manufacturing, the anti-fooling component can be installed on the mounting bracket, which is convenient for the production and manufacturing of the anti-fooling component.

[0019] Optionally, a groove is provided on one side of the socket, and a plug is provided on one side of the mounting block, and the plug is inserted into the groove.

[0020] By adopting the above technical solution, the cooperation of the groove and the plug facilitates inserting the mounting block into the socket from the correct direction.

[0021] Optionally, a plurality of heat dissipation windows are provided on the mounting frame.

[0022] By adopting the above technical solution, the provision of the heat dissipation windows facilitates heat dissipation of the fuse core, avoiding insufficient heat dissipation of the fuse core on the mounting frame, resulting in the mounting frame being scorched and yellowed.

[0023] Optionally, one of the heat dissipation windows communicates with the socket.

[0024] By adopting the above technical solution, the heat dissipation window is used for the abutting plate to pass through, thereby facilitating inserting the mounting block into the socket and facilitating the overall installation of the anti-fooling component.

[0025] Optionally, the convex block is located at the axis of the fuse core.

[0026] By adopting the above technical solution, setting the convex block at the axis avoids the position of the convex block being easily changed during installation, and thus facilitates the abutting plate to abut against the convex block.

[0027] Optionally, the length of the abutting plate located inside the mounting frame is greater than the radius of the fuse core and less than the diameter of the fuse core.

[0028] By adopting the above technical solution, when the side of the fuse core with the convex block is inserted into the mounting frame, the abutting plate with a length greater than the radius of the fuse core facilitates abutting against the convex block, preventing the fuse core from continuing to be inserted into the mounting frame and limiting the misaligned fuse core.

[0029] When the smooth side of the fuse core is inserted into the mounting frame, the abutting plate with a length less than the diameter of the fuse core facilitates directly rotating to fit with the mounting frame, thus facilitating the installation of the fuse core.

[0030] Optionally, the end of the side of the abutting plate that fits the fuse core is arc-shaped.

[0031] By adopting the above technical solution, the arc-shaped end of the abutting plate reduces the damage to the fuse core when the abutting plate abuts against the fuse core.

[0032] Optionally, a relief groove is provided at one end of the mounting frame away from the installation of the fuse core, and the relief groove is used to accommodate the abutting plate.

[0033] By adopting the above technical solution, the extrusion of the fuse core inserted in the mounting frame by the abutting plate is reduced by means of the arrangement of the relief groove, thereby facilitating the installation and removal of the fuse core.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. Through the cooperation of the main body, the cover body, the mounting groove, the indicator, the mounting frame, the fuse core, the convex block, the abutting plate and the reset member, the fuse core is correctly installed in the base, so that the fuse can give an alarm normally;

[0036] 2. Through the cooperation of the insertion slot and the mounting block, the mounting frame and the anti-fooling component are separately manufactured, and after the manufacturing is completed, the anti-fooling component can be installed on the mounting frame, which is convenient for the production and manufacturing of the anti-fooling component;

[0037] 3. By connecting the heat dissipation window with the insertion slot, the heat dissipation window not only has the effect of heat dissipation, but also facilitates the insertion of the mounting block into the insertion slot, thereby facilitating the overall installation of the anti-fooling component. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a drawing of the background art of the present application.

[0039] Figure 2 is a schematic structural diagram of a fuse with an anti-fooling structure in an embodiment of the present application.

[0040] Figure 3 is a schematic internal structural diagram of a fuse with an anti-fooling structure in an embodiment of the present application.

[0041] Figure 4 is a schematic structural diagram of the cover body in an embodiment of the present application.

[0042] Figure 5 is a schematic structural diagram of the anti-fooling component in an embodiment of the present application.

[0043] DESCRIPTION OF THE REFERENCE NUMERALS:

[0044] 101, fuse core; 102, porcelain tube; 103, end cap; 104, fuse wire; 105, spring; 106, ejecting block; 1, base; 11, main body; 12, cover body; 13, mounting groove; 14, indicator; 15, mounting frame; 16, insertion slot; 17, groove; 18, heat dissipation window; 19, relief groove; 2, anti-fooling component; 21, abutting plate; 22, reset member; 23, mounting block; 24, rotating rod; 25, inserting block; 3, convex block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] The following is a further detailed description of the present application in conjunction with the attached Figures 1-5 drawings.

[0046] An embodiment of the present application discloses a fuse with an anti-fooling structure.

[0047] Referring to Figures 1-4 , a fuse with an anti-fooling structure includes a base 1 and an anti-fooling component 2. The base 1 includes a main body 11 and a cover 12. An installation groove 13 is formed on the main body 11. One end of the installation groove 13 is provided with an indicator 14. The indicator 14 is located at the movable end of the cover 12. The cover 12 is rotatably connected to the main body 11. An installation frame 15 is provided on the cover 12. A fuse core 101 is installed in the installation frame 15. A convex block 3 is provided at one end of the fuse core 101 having a pop-up block 106. The anti-fooling component 2 includes a contact plate 21 and a reset member 22. The contact plate 21 is rotatably connected to the installation frame 15. The movable end of the contact plate 21 extends into the installation frame 15, and one end extending into the installation frame 15 can contact the convex block 3. The reset member 22 is installed between the contact plate 21 and the installation frame 15. The reset member 22 is used to drive the contact plate 21 to rotate towards the side where the fuse core 101 is installed. By limiting the convex block 3 with the contact plate 21, the end with the convex block 3 cannot be inserted into the installation frame 15, avoiding incorrect installation methods, so that the fuse core 101 can be correctly inserted into the installation frame 15, and further the fuse core 101 is correctly installed in the base 1.

[0048] The indicator 14 in this embodiment is a transmission mechanism between multiple rotating blocks. In other embodiments, it can also be set as other triggering structures or electronic induction devices, which will not be elaborated in this embodiment.

[0049] Referring to Figure 4 and Figure 5 , the anti-fooling component 2 further includes an installation block 23. The contact plate 21 and the reset member 22 are both installed on the installation block 23. A plug-in slot 16 is formed on the installation frame 15. The installation block 23 is inserted into the plug-in slot 16. By setting the anti-fooling component 2 to be installed using the installation block 23, the installation block 23 and the installation frame 15 are detachably connected, facilitating the separate manufacturing of the installation frame 15 and the anti-fooling component 2. Thus, the anti-fooling component 2 and the installation frame 15 are separately manufactured and then assembled, which is convenient for the production and manufacturing of the anti-fooling component 2 and is suitable for large-scale industrial production.

[0050] In an alternative embodiment, a groove 17 is provided on one side of the plug-in slot 16, and a plug 25 is provided on one side of the installation block 23. The plug 25 is inserted into the groove 17. The cooperation between the groove 17 and the plug 25 facilitates inserting the installation block 23 into the plug-in slot 16 from the correct direction, thus facilitating the assembly of the anti-fooling component 2 and the installation frame 15.

[0051] The mounting bracket 15 is provided with a plurality of heat dissipation windows 18, and one of the heat dissipation windows 18 communicates with the insertion slot 16. The heat dissipation window 18 not only facilitates the heat dissipation of the fuse core 101, avoiding insufficient heat dissipation of the fuse core 101 on the mounting bracket 15, which may cause the mounting bracket 15 to burn and turn yellow. At the same time, by connecting the heat dissipation window 18 with the insertion slot 16, the heat dissipation window 18 allows the abutting plate 21 to pass through, thus facilitating the insertion of the mounting block 23 into the insertion slot 16 and facilitating the overall installation of the anti-fooling component 2.

[0052] A rotating rod 24 is fixedly connected to the mounting block 23. The abutting plate 21 is rotatably connected to the rotating rod 24. The reset member 22 is sleeved on the rotating rod 24. In this embodiment, the reset member 22 is a torsion spring, and in other embodiments, it can also be set as an elastic or other elastic device. One end of the torsion spring is fixedly connected to the rotating rod 24, and the other end is fixedly connected to the abutting plate 21 to drive the abutting plate 21 to rotate towards the movable end of the cover body 12.

[0053] The rotating rod 24 is fixedly connected to the mounting block 23. By using the cooperation of the torsion spring and the rotating rod 24, the abutting plate 21 is driven to rotate towards the movable end of the cover body 12, so that each time the fuse core 101 is inserted into the mounting bracket 15, the abutting plate 21 can stably abut the fuse core 101.

[0054] In this embodiment, the convex block 3 is located on the axis of the fuse core 101, and the ejection block 106 is also located on the axis, so that the protruding convex block 3 can guide the ejection block 106, facilitating the determination of the position of the ejection block 106. By setting the convex block 3 on the axis, it is avoided that the position of the convex block 3 is likely to change during installation, and thus it is convenient for the abutting plate 21 to abut the convex block 3.

[0055] The length of the abutting plate 21 located inside the mounting bracket 15 is greater than the radius of the fuse core 101 and less than the diameter of the fuse core 101. When the side of the fuse core 101 with the convex block 3 is inserted into the mounting bracket 15, the abutting plate 21 with a length greater than the radius of the fuse core 101 is convenient for abutting on the convex block 3, so that the fuse core 101 cannot continue to be inserted into the mounting bracket 15, and the misaligned fuse core 101 is limited.

[0056] When the smooth side of the fuse core 101 is inserted into the mounting bracket 15, the abutting plate 21 with a length less than the diameter of the fuse core 101 is convenient for directly rotating to fit with the mounting bracket 15, thus facilitating the installation of the fuse core 101.

[0057] In other embodiments, the position of the convex block 3 can also be eccentrically arranged. At this time, the width of the abutting plate 21 needs to be greater than the eccentric distance of the convex block 3, so that when one end of the fuse core 101 with the convex block 3 is inserted into the mounting bracket 15 from any angle, the abutting plate 21 can abut on the convex block 3, thereby restricting the insertion of the fuse core 101 into the mounting bracket 15.

[0058] The end of the abutting plate 21 that fits against one side of the fuse core 101 is bent so that the end that abuts against the contact surface of the fuse core 101 is arc-shaped. By using the arc-shaped end of the abutting plate 21, the damage to the fuse core 101 caused by the abutting plate 21 abutting against the fuse core 101 is reduced.

[0059] A relief groove 19 is provided at one end of the mounting bracket 15 that is away from the installation of the fuse core 101. The relief groove 19 penetrates the mounting bracket 15 from the movable end of the anti-fooling component 2 towards the cover body 12. When the fuse core 101 is inserted into the mounting bracket 15, the abutting plate 21 rotates into the relief groove 19. By using the accommodation of the relief groove 19 for the abutting plate 21, the extrusion of the fuse core 101 by the abutting plate 21 when the fuse core 101 is inserted into the mounting bracket 15 is reduced, thereby facilitating the installation and removal of the fuse core 101.

[0060] The implementation principle of a fuse with an anti-fooling structure in an embodiment of the present application is as follows: By adopting the above technical solution, when installing the fuse core 101, when the end of the fuse core 101 with the convex block 3 is installed on the mounting bracket 15, the abutting plate 21 abuts against the convex block 3, thereby preventing the fuse core 101 from continuing to be installed in the mounting bracket 15, and thus avoiding incorrect installation methods.

[0061] When the flat end of the fuse core 101 is installed on the mounting bracket 15, the abutting plate 21 abuts against the parallel fuse core 101, and the part of the abutting plate 21 that does not abut against the force. Therefore, the abutting plate 21 continuously rotates during the installation process of the fuse core 101, so that the fuse core 101 can be correctly inserted on the mounting bracket 15.

[0062] After the fuse core 101 is correctly inserted into the mounting bracket 15, the convex block 3 is located on the rotating side of the cover body 12. Rotate the cover body 12 so that the mounting bracket 15 and the fuse core 101 are located in the mounting groove 13 of the main body 11. At this time, the position of the convex block 3 corresponds to that of the indicator 14. When the fuse wire 104 in the fuse core 101 melts, the ejection block 106 ejects to drive the indicator 14 to give an alarm, so as to correctly judge the state of the fuse core 101.

[0063] By using the cooperation of the abutting plate 21 and the reset member 22, the fuse core 101 is correctly installed in the base 1, so that the fuse can give an alarm normally.

[0064] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fuse with a foolproof structure, characterized in that: include: A base (1) comprises a main body (11) and a cover (12), wherein the main body (11) is provided with a mounting groove (13), one end of the mounting groove (13) is provided with an indicator (14), the indicator (14) is located at a movable end of the cover (12), the cover (12) is rotatably connected to the main body (11), a mounting frame (15) is provided on the cover (12), a fusible core (101) is installed in the mounting frame (15), and one end of the fusible core (101) having a pop-up block (106) is provided with a protrusion (3); The foolproof assembly (2) comprises an abutment plate (21) and a reset member (22), wherein the abutment plate (21) is rotatably connected to the mounting frame (15), a movable end of the abutment plate (21) extends into the mounting frame (15), and one end extending to the mounting frame (15) can abut against the protrusion (3), and the reset member (22) is installed between the abutment plate (21) and the mounting frame (15), and the reset member (22) is used to drive the abutment plate (21) to rotate toward the side where the fuse (101) is installed.

2. A fuse with foolproof structure according to claim 1, characterized in that: The foolproof assembly (2) further comprises a mounting block (23), wherein the mounting block (23) is mounted on the mounting frame (15), a rotating rod (24) is fixedly connected to the mounting block (23), the abutment plate (21) is rotatably connected to the rotating rod (24), the reset member (22) is sleeved on the rotating rod (24), the reset member (22) is a torsion spring, one end of the torsion spring is fixedly connected to the rotating rod (24), and the other end is fixedly connected to the abutment plate (21), so as to drive the abutment plate (21) to rotate toward the movable end of the cover body (12).

3. A fuse with foolproof structure according to claim 2, characterized in that: The mounting frame (15) is provided with an inserting slot (16), and the mounting block (23) is inserted into the inserting slot (16).

4. A fuse with fool-proof structure according to claim 3, characterized in that: A groove (17) is provided on one side of the plug-in slot (16), and an insert block (25) is provided on one side of the mounting block (23), wherein the insert block (25) is inserted into the groove (17).

5. A fuse with fool-proof structure according to claim 4, characterized in that: The mounting frame (15) is provided with a plurality of heat dissipation windows (18).

6. A fuse with fool-proof structure according to claim 5, characterized in that: One of the heat dissipation windows (18) is in communication with the plug-in slot (16).

7. A fuse with foolproof structure according to claim 1, characterized in that: The protrusion (3) is located at the axis of the fuse core (101).

8. A fuse with foolproof structure according to claim 7, characterized in that: The length of the abutment plate (21) located in the mounting frame (15) is greater than the radius of the fusible core (101) and smaller than the diameter of the fusible core (101).

9. A fuse with fool-proof structure according to claim 1, characterized in that: The end of the abutment plate (21) that abuts against the fusible core (101) is arranged in the shape of an arc.

10. A fuse with foolproof structure according to claim 1, characterized in that: An end of the mounting frame (15) which is installed away from the fuse core (101) is provided with a clearance groove (19), and the clearance groove (19) is used to accommodate the abutment plate (21).

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