Reusable automobile fuse

Abstract

The utility model provides a reusable automobile fuse, which relates to the technical field of fuses and comprises a fuse seat, the fuse seat comprises a shell, a first conducting strip, a second conducting strip and a top cover, the top cover is fixed at the top of the shell, and the first conducting strip and the second conducting strip are fixed on the top cover and the shell. According to the reusable automobile fuse, after a circuit returns to normal, the bimetallic strip recovers to the original shape after the temperature is reduced, the device is inverted, mercury flows into the upper connecting shell again, at the moment, the pull block is pulled to relieve limiting of the first magnetic sheet to the top plate, and the top plate drives the connecting rod and the sealing block to reset under the elastic force action of the positioning spring; and the bottom of the upper connecting shell is sealed by the sealing block, finally, the device is turned over, the first conducting strip and the second conducting strip are connected through mercury, the first conducting strip and the second conducting strip are recovered to be closed, a new fuse does not need to be replaced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to an automotive fuse, specifically a reusable automotive fuse, and belongs to the field of fuse technology. Background Technology

[0002] An automotive fuse is an important protective component in a car's electrical circuit, primarily used to protect the vehicle's electrical equipment and wiring from damage caused by short circuits or overload currents. It breaks the circuit by melting itself when the current becomes too high, preventing damage to electrical equipment or fire.

[0003] Chinese Patent Publication CN201629283U discloses a solderable automotive fuse. The conductive connector uses copper as the base material, which has better conductivity and reduces the impedance generated by the fuse itself, enabling electrical equipment to perform more efficiently. The insulating shell is made of transparent material, which makes it easy to visually identify whether the fused conductor has melted, and can quickly and accurately determine the location of the fault so as to troubleshoot it in a timely manner.

[0004] The aforementioned patent achieves its protective function through the fuse's melting mechanism. Once melted, the fuse cannot be restored and must be replaced with a new fuse, increasing maintenance costs.

[0005] The aforementioned patent allows for visual inspection to identify whether a fused conductor has melted. However, some meltdowns (such as minor fractures or internal conductor damage) may be difficult to detect with the naked eye, especially when there are many fuses in the circuit, making it time-consuming to locate the faulty fuse. Therefore, this paper proposes a reusable automotive fuse. Utility Model Content

[0006] This invention proposes a reusable automotive fuse that allows for manual restoration of the circuit after it has been restored to normal, eliminating the need to replace the fuse and reducing maintenance costs. Additionally, it provides an LED indicator light to alert the user when the circuit is disconnected, saving troubleshooting time.

[0007] This utility model is achieved through the following technical solution: a reusable automotive fuse, including a fuse holder, the fuse holder including a housing, a first conductive plate, a second conductive plate and a top cover, the top cover being fixed to the top of the housing, and the first and second conductive plates being fixed to the top cover and the housing.

[0008] A connection assembly for disconnecting abnormal circuits is provided between the first conductive sheet and the second conductive sheet. The connection assembly includes an upper connecting shell fixed to the first conductive sheet and the second conductive sheet. The bottom of the upper connecting shell is connected to a lower connecting shell. A sealing component is slidably connected to the upper connecting shell. The sealing component includes a connecting rod that is slidably connected to the upper connecting shell. A sealing block is fixed to the bottom of the connecting rod. The sealing block and the lower connecting shell are in a sealing sliding connection.

[0009] A top plate is fixed to the top of the sealing component, and a positioning spring is fixed between the top plate and the upper connecting shell. A bimetallic component is fixed to the side of the upper connecting shell, and the top surface of the bimetallic component is in contact with the bottom of the top plate. The bimetallic component includes a fixing seat, which is fixed to the side of the upper connecting shell. A bimetallic sheet is fixed to the upper end of the fixing seat, and the bimetallic sheet is in contact with the bottom of the top plate.

[0010] A heat-conducting component is fixed on the upper connecting shell. The heat-conducting component is fixed to the bimetallic component. The heat-conducting component includes a heat-conducting block, which is embedded in the inner wall of the upper connecting shell. A heat-conducting plate extending to the outer side of the upper connecting shell is fixed on the heat-conducting block. A heat-conducting sleeve is fixed at the upper end of the heat-conducting plate. The heat-conducting sleeve is fixedly fitted on the bimetallic sheet. Mercury is present inside the upper connecting shell.

[0011] The connection assembly and fuse holder are provided with a prompting component for alerting the user to circuit abnormalities. The prompting component includes wire A and wire B, the lower ends of which extend into the interior of the lower connection housing. The upper ends of wire A and wire B are jointly equipped with an LED indicator light, which is fixed to the top of the top cover.

[0012] The top cover and the top plate are provided with a limiting mechanism for limiting the position of the top plate. The limiting mechanism includes a mounting groove opened on the top of the top cover, a sliding rod slidably connected in the mounting groove, the sliding rod passing through the top cover, a pull block fixed to the top of the sliding rod, a tension spring fixed between the mounting groove and the pull block, a first magnetic sheet fixed to the bottom of the sliding rod, and a second magnetic sheet fixed to the top of the top plate.

[0013] This invention provides a reusable automotive fuse, which has the following advantages:

[0014] 1. When the circuit of this reusable automotive fuse malfunctions, the mercury transfers heat to the bimetallic strip through the heat-conducting block, heat-conducting plate, and heat-conducting sleeve. After being heated, the left end of the bimetallic strip will bend upwards, which in turn drives the connecting rod and sealing block to move through the top plate. The mercury will flow into the lower connecting shell. At this time, the first and second conductive strips are open circuits, while wires A and B are closed circuits. The LED indicator light will turn on to remind the user and save troubleshooting time.

[0015] 2. After the circuit returns to normal, the bimetallic strip cools down and returns to its original shape. When the device is inverted, mercury flows back into the upper connecting shell. At this time, pulling the pull block releases the first magnetic strip from the top plate. Under the action of the positioning spring, the top plate drives the connecting rod and the sealing block to reset. The bottom of the upper connecting shell is sealed by the sealing block. Finally, the device is flipped over, and the first and second conductive strips are connected by mercury, restoring the circuit between the first and second conductive strips. There is no need to replace the fuse, reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the shell and top cover of this utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the internal structure of the upper connecting shell and the lower connecting shell of this utility model;

[0020] Figure 5 This is a cross-sectional view of the internal structure of the top cover of this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Fuse holder; 101. Housing; 102. First conductive plate; 103. Second conductive plate; 104. Top cover;

[0023] 2. Connecting components; 201. Upper connecting shell; 202. Lower connecting shell; 203. Sealing component; 2031. Connecting rod; 2032. Sealing block; 204. Top plate; 205. Bimetallic component; 2051. Fixing base; 2052. Bimetallic sheet; 206. Heat-conducting component; 2061. Heat-conducting block; 2062. Heat-conducting plate; 2063. Heat-conducting sleeve; 207. Mercury; 208. Positioning spring;

[0024] 3. Indicator components; 301. Wire A; 302. Wire B; 303. LED indicator;

[0025] 4. Limiting mechanism; 401. Mounting groove; 402. Slide rod; 403. Pull block; 404. Tension spring; 405. First magnetic piece; 406. Second magnetic piece. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0027] Please see Figures 1-5 The present invention proposes the following implementation scheme: a reusable automotive fuse, including a fuse holder 1, the fuse holder 1 including a housing 101, a first conductive sheet 102, a second conductive sheet 103 and a top cover 104, the top cover 104 being fixed to the top of the housing 101, and the first conductive sheet 102 and the second conductive sheet 103 being fixed to the top cover 104 and the housing 101.

[0028] Please refer to this carefully. Figure 2 , Figure 3 and Figure 4 A connection component 2 for disconnecting abnormal circuits is provided between the first conductive sheet 102 and the second conductive sheet 103. The connection component 2 includes an upper connecting shell 201 fixed to the first conductive sheet 102 and the second conductive sheet 103.

[0029] The bottom of the upper connecting shell 201 is connected to the lower connecting shell 202. A sealing component 203 is slidably connected to the upper connecting shell 201. The sealing component 203 includes a connecting rod 2031, which is slidably connected to the upper connecting shell 201. A sealing block 2032 is fixed to the bottom of the connecting rod 2031, and the sealing block 2032 is slidably connected to the lower connecting shell 202.

[0030] A top plate 204 is fixed to the top of the sealing component 203. A positioning spring 208 is fixed between the top plate 204 and the upper connecting shell 201. A bimetallic component 205 is fixed to the side of the upper connecting shell 201. The top surface of the bimetallic component 205 is in contact with the bottom of the top plate 204.

[0031] The bimetallic component 205 includes a fixing base 2051, which is fixed to the side of the upper connecting shell 201. A bimetallic strip 2052 is fixed to the upper end of the fixing base 2051. The bimetallic strip 2052 is in contact with the bottom of the top plate 204. When the bimetallic strip 2052 is heated, the left end of the bimetallic strip 2052 will deform, and the bimetallic strip 2052 will drive the top plate 204 to move upward.

[0032] Please refer to this carefully. Figure 3 and Figure 4A heat-conducting component 206 is fixed on the upper connecting shell 201. The heat-conducting component 206 is fixed to the bimetallic component 205. The heat-conducting component 206 includes a heat-conducting block 2061, which is embedded in the inner wall of the upper connecting shell 201. A heat-conducting plate 2062 extending to the outer side of the upper connecting shell 201 is fixed on the heat-conducting block 2061. A heat-conducting sleeve 2063 is fixed at the upper end of the heat-conducting plate 2062. The heat-conducting block 2061, the heat-conducting plate 2062, and the heat-conducting sleeve 2063 are all made of insulating material with good thermal conductivity.

[0033] The heat-conducting sleeve 2063 is fixedly sleeved on the bimetallic sheet 2052. The upper connecting shell 201 contains mercury 207, which has good conductivity. The mercury 207 can be used to electrically connect the first conductive sheet 102 and the second conductive sheet 103 or the wire A301 and the wire B302.

[0034] Please refer to this carefully. Figure 2 and Figure 4 The connecting component 2 and the fuse holder 1 are provided with a prompting component 3 for reminding the user of circuit abnormalities. The prompting component 3 includes wires A301 and B302. The lower ends of wires A301 and B302 extend into the interior of the lower connecting housing 202. The upper ends of wires A301 and B302 are jointly equipped with an LED indicator 303.

[0035] When the LED indicator 303 is fixed on the top of the top cover 104 and the mercury 207 is located at the bottom of the lower connecting shell 202, the wires A301 and B302 are in a circuit path, and the LED indicator 303 will turn on, thereby informing the user which part of the circuit has a fault.

[0036] Please refer to this carefully. Figure 2 and Figure 5 The top cover 104 and the top plate 204 are provided with a limiting mechanism 4 for limiting the top plate 204. The limiting mechanism 4 includes a mounting groove 401 opened on the top of the top cover 104, and a sliding rod 402 is slidably connected in the mounting groove 401, the sliding rod 402 passing through the top cover 104.

[0037] A pull block 403 is fixed to the top of the slide rod 402. Pulling the pull block 403 can cause the slide rod 402 to slide on the top cover 104. A tension spring 404 is fixed between the mounting groove 401 and the pull block 403. A first magnetic sheet 405 is fixed to the bottom of the slide rod 402.

[0038] The movement of the slide bar 402 will also drive the first magnetic piece 405 to move. The top of the top plate 204 is fixed with a second magnetic piece 406. The first magnetic piece 405 and the second magnetic piece 406 can attract each other.

[0039] Working principle: When a circuit malfunctions, mercury 207 heats up. The mercury 207 transfers heat to the bimetallic strip 2052 via the heat-conducting block 2061, heat-conducting plate 2062, and heat-conducting sleeve 2063. Upon heating, the left end of the bimetallic strip 2052 bends upwards, which in turn causes the connecting rod 2031 and sealing block 2032 to move upwards via the top plate 204. The sealing block 2032 no longer seals the top of the lower connecting shell 202, and mercury 207 flows into the lower connecting shell 202. At this time, the... When the first conductive sheet 102 and the second conductive sheet 103 are open circuits, and the wires A301 and B302 are in a closed circuit, the LED indicator 303 will turn on to remind the user and save troubleshooting time. During the above process, when the top plate 204 rises, it will also drive the second magnetic sheet 406 to move until the second magnetic sheet 406 is in contact with the first magnetic sheet 405. The first magnetic sheet 405 and the second magnetic sheet 406 can limit the top plate 204, the connecting rod 2031, and the sealing block 2032.

[0040] After the circuit returns to normal, the bimetallic strip 2052 cools down and returns to its original shape. First, the device is inverted, and mercury 207 flows back into the upper connecting shell 201. At this time, the pull block 403 is pulled, and the pull block 403 drives the first magnetic strip 405 to move through the slide rod 402. The first magnetic strip 405 will no longer be in contact with the second magnetic strip 406, releasing the first magnetic strip 405 from limiting the top plate 204. Under the elastic force of the positioning spring 208, the top plate 204 drives the connecting rod 2031 and the sealing block 2032 to reset. The bottom of the upper connecting shell 201 is sealed by the sealing block 2032. Finally, the device is flipped over, and the first conductive strip 102 and the second conductive strip 103 are connected by mercury 207. The first conductive strip 102 and the second conductive strip 103 are restored to the original path, eliminating the need to replace the fuse and reducing maintenance costs.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reusable automotive fuse, comprising a fuse holder (1), the fuse holder (1) comprising a housing (101), a first conductive plate (102), a second conductive plate (103), and a top cover (104), characterized in that: A connection component (2) for disconnecting abnormal circuits is provided between the first conductive sheet (102) and the second conductive sheet (103), and a prompt component (3) for reminding the user of circuit abnormalities is provided on the connection component (2) and the fuse holder (1); The connecting assembly (2) includes an upper connecting shell (201) fixed to the first conductive sheet (102) and the second conductive sheet (103). The bottom of the upper connecting shell (201) is connected to the lower connecting shell (202). A sealing component (203) is slidably connected to the upper connecting shell (201). A top plate (204) is fixed to the top of the sealing component (203). A bimetallic component (205) is fixed to the side of the upper connecting shell (201). The top surface of the bimetallic component (205) is in contact with the bottom of the top plate (204). A heat-conducting component (206) is fixed on the upper connecting shell (201), and the heat-conducting component (206) is fixed to the bimetallic component (205). Mercury (207) is present inside the upper connecting shell (201). A positioning spring (208) is fixed between the top plate (204) and the upper connecting shell (201). A limiting mechanism (4) for limiting the top plate (204) is provided on the top cover (104) and the top plate (204).

2. A reusable automotive fuse according to claim 1, characterized in that: The limiting mechanism (4) includes a mounting groove (401) opened on the top of the top cover (104), a sliding rod (402) is slidably connected in the mounting groove (401), the sliding rod (402) passes through the top cover (104), a pull block (403) is fixed on the top of the sliding rod (402), a tension spring (404) is fixed between the mounting groove (401) and the pull block (403), a first magnetic piece (405) is fixed on the bottom of the sliding rod (402), and a second magnetic piece (406) is fixed on the top of the top plate (204).

3. A reusable automotive fuse according to claim 1, characterized in that: The sealing component (203) includes a connecting rod (2031), which is slidably connected to the upper connecting shell (201). A sealing block (2032) is fixed to the bottom of the connecting rod (2031), and the sealing block (2032) is slidably connected to the lower connecting shell (202).

4. A reusable automotive fuse according to claim 1, characterized in that: The bimetallic component (205) includes a fixing base (2051), which is fixed to the side of the upper connecting shell (201). A bimetallic sheet (2052) is fixed to the upper end of the fixing base (2051), and the bimetallic sheet (2052) is in contact with the bottom of the top plate (204).

5. A reusable automotive fuse according to claim 4, characterized in that: The heat-conducting component (206) includes a heat-conducting block (2061), which is embedded in the inner wall of the upper connecting shell (201). A heat-conducting plate (2062) extending to the outside of the upper connecting shell (201) is fixed on the heat-conducting block (2061). A heat-conducting sleeve (2063) is fixed at the upper end of the heat-conducting plate (2062), and the heat-conducting sleeve (2063) is fixedly sleeved on the bimetallic sheet (2052).

6. A reusable automotive fuse according to claim 1, characterized in that: The prompting component (3) includes wire A (301) and wire B (302), the lower ends of which extend into the interior of the lower connecting shell (202), and the upper ends of which are jointly equipped with an LED indicator (303), which is fixed to the top of the top cover (104).

7. A reusable automotive fuse according to claim 1, characterized in that: The top cover (104) is fixed to the top of the housing (101), and the first conductive sheet (102) and the second conductive sheet (103) are fixed to the top cover (104) and the housing (101).

Images