Automobile engine fuse box

Abstract

The utility model relates to the technical field of automobile engine fuse boxes, in particular to an automobile engine fuse box, which comprises a lower main body and an upper main body, the upper main body is clamped and mounted in the lower main body, an upper cover is clamped and mounted at the upper end of the lower main body, a lower cover is clamped and mounted at the lower end of the lower main body, and a PCBA (printed circuit board assembly) is clamped and mounted in the lower main body. A pin end of the PCBA penetrates through the upper main body, and a fuse is inserted into the pin end of the PCBA and is positioned in the upper main body; the fuse is connected with the PCBA, the PCBA is installed in a sealed mode through the upper main body and the lower main body, the two ends of the lower main body are buckled in a sealed mode through the upper cover and the lower cover, the PCBA is adopted to replace internal complicated wiring, the whole product is light in weight, small in size and simple, the MIDI fuse riveting assembly serves as an independent module to be assembled on the fuse box, selective installation is achieved according to requirements, and the production cost is reduced. Therefore, cost and weight are reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile engine fuse boxes, in particular to an automobile engine fuse box. Background Art

[0002] As the functions of the vehicle become more and more, there are more and more electrical appliances and various control modules in the car, and the wiring harnesses that power these electrical appliances and modules are also increasing. The engine fuse box is located in the engine compartment. It is a power distribution and circuit protection device that connects the vehicle power supply and electrical appliances. It is the largest power distribution and protection device for most cars.

[0003] Prior art, such as publication number "CN221708649U", discloses an engine fuse box, which is composed of an upper cover, a base, a connecting column, a clamping plate and other structures. A clamping plate is provided to replace the fastening bolts to connect the upper cover and the base. When the clamping plate of the clamping plate is worn, the upper cover and the base cannot be fastened well. At this time, by pulling the elastic limit plate upward, the rotational connection between the connecting block and the elastic limit plate and the connecting column can be cancelled, and then the clamping plate can be removed for easy replacement, thereby reducing material waste.

[0004] The prior art, such as publication number "CN217955794U", discloses a car front cabin fuse box, including an upper cover and a lower cover, using PCB board routing and MIDI fuse component connection, an upper body and a lower body are arranged between the upper cover and the lower cover, the upper body is located inside the upper cover, and the lower body is located above the lower cover.

[0005] However, the prior art has defects. In the patent with publication number "CN221708649U", when the fuse box requires more and more fuses and relays, the connection relationship will become more and more complicated. In the patent with publication number "CN217955794U", the upper body and the lower body installation structure occupy more space, resulting in a larger engine fuse box, heavier weight, and complicated wiring harness. Therefore, an automobile engine fuse box is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide an automobile engine fuse box to solve the problems raised in the above background technology.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A car engine fuse box comprises a lower body and an upper body, wherein the upper body is snap-fitted and installed inside the lower body, an upper cover is snap-fitted and installed on the upper end of the lower body, a lower cover is snap-fitted and installed on the lower end of the lower body, a PCBA is snap-fitted and installed inside the lower body, a pin end of the PCBA penetrates the upper body, and a fuse is plugged and installed on the pin end of the PCBA, the fuse is located in the upper body, a MIDI insurance plastic seat for installing a MIDI insurance riveting assembly is snap-fitted and installed on one side of the lower body, and the upper cover is arranged outside the MIDI insurance plastic seat.

[0009] Preferably, a plurality of sets of fasteners are fixedly connected to the MIDI insurance plastic seat, and the MIDI insurance riveting assembly is snap-fitted and installed on the plurality of sets of fasteners.

[0010] Preferably, a mounting frame is fixedly connected to one side of the lower main body, a docking frame is clamped and mounted on the mounting frame, and a mounting bracket is fixedly connected to one side of the docking frame.

[0011] Preferably, an inner clamping block is fixedly connected to the inner wall of the lower body, a fixing block is fixedly connected to the side wall of the upper body, the fixing block is engaged with the inner clamping block, and the lower end of the upper body is mounted in contact with the inner wall of the lower body.

[0012] Preferably, a lower clamping block is fixedly connected to the side wall of the lower main body, and a lower buckle is fixedly connected to the side wall of the lower cover, and the lower buckle is clamped and installed with the lower clamping block.

[0013] Preferably, an upper clamping block is fixedly connected to the side wall of the lower body, and an upper buckle is fixedly connected to the side wall of the upper cover, and the upper buckle is clamped and installed with the upper clamping block.

[0014] Beneficial effects of the utility model:

[0015] The utility model connects the fuse to the PCBA, the PCBA is sealed and installed through the upper body and the lower body, the upper cover and the lower cover are sealed and buckled on the two ends of the lower body, and the upper body is installed inside the lower body, so that the upper body does not occupy additional space outside the lower body, the fuse box as a whole is reduced in volume, the internal components are densely packed and the wiring harness is reduced, so as to avoid the problem of complex connection relationship caused by too many and messy wiring harnesses. The whole product is light in weight, small in size and simple in product. The copper busbar on the MIDI insurance riveting assembly is connected to the power inlet position, and the current of the high-power electrical appliances is directly distributed from the power supply to the high-power electrical appliances through the MIDI insurance riveting assembly. It is assembled on the fuse box as a separate module and selectively installed according to needs to achieve cost reduction and weight reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the utility model structure with the upper cover removed;

[0019] Figure 3 This is a schematic diagram of the structure of the MIDI insurance riveting assembly of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall explosion structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 6 yes Figure 5 A schematic diagram of the structure at A;

[0023] The reference numerals in the figures are as follows:

[0024] 1. Lower cover; 11. Lower buckle; 2. MIDI insurance riveting assembly; 3. Fastener; 4. Mounting bracket; 41. Docking frame; 5. MIDI insurance plastic seat; 6. Lower body; 61. Lower clamping block; 62. Upper clamping block; 63. Inner clamping block; 64. Mounting frame; 7. PCBA; 8. Upper body; 81. Fixing block; 9. Fuse; 10. Upper cover; 101. Upper buckle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] A car engine fuse box, such as Figure 1-Figure 6 As shown, it includes a lower body 6 and an upper body 8, the upper body 8 is snap-fitted and installed inside the lower body 6, the upper end of the lower body 6 is snap-fitted with an upper cover 10, the lower end of the lower body 6 is snap-fitted with a lower cover 1, the lower body 6 is snap-fitted with a PCBA 7 inside the lower body 6, the pin end of the PCBA 7 passes through the upper body 8, and the pin end of the PCBA 7 is plugged and installed with a fuse 9, the fuse 9 is located in the upper body 8, a MIDI insurance plastic seat 5 for installing a MIDI insurance rivet assembly 2 is snap-fitted and installed on one side of the lower body 6, and the upper cover 10 is covered on the outside of the MIDI insurance plastic seat 5.

[0027] Pins and PCB relays are welded on PCBA7. The pins are used to connect fuses 9 and connectors. The power enters the PCB from the copper bus on PCBA7, and then the copper foil wiring inside the PCB is used to connect the pins and PCB relays to distribute a power supply to the corresponding electrical appliances in the car. The internal wiring of the PCB replaces the bus and internal connecting wires of the traditional fuse box. The pins on PCBA7 leak out of the plastic holes of the upper body 8 and the lower body 6. All fuses 9 are inserted into the pins of PCBA7. The fuses 9 play a protective role in each circuit.

[0028] By connecting the fuse 9 to the PCBA 7, the PCBA 7 is sealed and installed through the upper body 8 and the lower body 6, and the upper cover 10 and the lower cover 1 are sealed and buckled on both ends of the lower body 6. The upper cover 10 is buckled on the lower body 6 to cover all the fuses 9 to prevent water, dust or foreign matter from entering the engine compartment fuse box. The lower cover 1 is installed to the lower body 6 by snapping to protect water, dust or foreign matter from entering the engine compartment fuse box from the bottom surface, and to restrain the wires that transmit power to various electrical appliances of the whole vehicle. The upper body 8 is snap-fitted and installed inside the lower body 6, so that the upper body 8 does not occupy additional space outside the lower body 6. The upper cover 10 is directly snap-fitted and installed with the lower body 6, so that the distance between the upper cover 10 and the lower cover 1 is reduced. The overall volume of the fuse box is reduced, and the internal components are densely installed while reducing the wiring harness to prevent problems such as complex wiring relationships caused by multiple wiring harnesses. The entire product is light in weight, small in size, and simple in product. The single-sided riveted MIDI fuse 9 uses a riveting process and a copper busbar to form a MIDI insurance riveted assembly 2. The MIDI insurance riveted assembly 2 is installed on the MIDI insurance plastic seat 5, and the entire plastic seat is installed on the side of the lower body 6. The copper busbar on the MIDI insurance riveted assembly 2 is connected to the power input position, and the current of high-power electrical appliances is directly distributed from the power supply to the high-power electrical appliances through the MIDI insurance riveted assembly 2. It is assembled on the fuse box as a separate module and selectively installed according to needs to achieve cost reduction and weight reduction.

[0029] This engine fuse box uses smaller Micro fuses, Mcase fuses and PCB relays to replace MINI fuses, Jcase fuses and plug-in relays, making the entire product lighter and smaller in size, meeting the requirements of miniaturization and lightweight of automobiles.

[0030] A single-sided riveted MIDI fuse is used to replace a double-sided screwed MIDI fuse and a customized combination fuse. The double-sided screwed MIDI fuse requires an extra pair of fasteners 3, which increases material cost and product weight. The customized combination fuse needs to be newly developed and changes require mold modification and re-verification, which increases development cycle and cost and is not conducive to subsequent platform applications. The single-sided riveted MIDI fuse uses a standard fuse and a copper bar to rivet together to form a MIDI fuse riveted assembly 2, which can save a pair of fasteners 3. Platform applications also make it convenient to change fuse specifications, saving costs, weight and development cycle.

[0031] like Figure 3-Figure 4 As shown, a plurality of fasteners 3 are fixedly connected to the MIDI insurance plastic seat 5 , and the MIDI insurance riveting assembly 2 is mounted on the plurality of fasteners 3 by snap-fitting.

[0032] The MIDI insurance riveting assembly 2 is installed on the MIDI insurance plastic seat 5 through the fastener 3.

[0033] like Figure 1 , Figure 3 , Figure 4 As shown, a mounting frame 64 is fixedly connected to one side of the lower body 6 , a docking frame 41 is clamped and installed on the mounting frame 64 , and a mounting bracket 4 is fixedly connected to one side of the docking frame 41 .

[0034] The mounting bracket 4 is mounted by being clipped with the mounting frame 64 of the side wall of the lower main body 6 through the docking frame 41, which is convenient for disassembly and assembly. The fuse box is fastened to the vehicle body through the mounting bracket 4. The mounting bracket 4 adopts a detachable structure. Whether to disassemble and assemble can be reasonably selected according to the installation space and needs, thereby increasing the applicability of the installation space of the fuse box. The mounting bracket 4 of different shapes can also be customized according to the space, so that the overall installation space of the fuse box can be adjusted.

[0035] like Figure 5-Figure 6 As shown, the inner wall of the lower body 6 is fixedly connected with an inner block 63 , and the side wall of the upper body 8 is fixedly connected with a fixing block 81 . The fixing block 81 is engaged with the inner block 63 , and the lower end of the upper body 8 is installed in contact with the inner wall of the lower body 6 .

[0036] The upper body 8 is buckled downward from the upper end of the lower body 6 until the inner clamping block 63 is engaged with the fixing block 81 , and the upper body 8 is buckled inside the lower body 6 .

[0037] like Figure 1-Figure 4 As shown, a lower clamping block 61 is fixedly connected to the side wall of the lower body 6 , and a lower buckle 11 is fixedly connected to the side wall of the lower cover 1 . The lower buckle 11 is clamped and installed with the lower clamping block 61 .

[0038] The lower buckle 11 of the lower cover 1 is engaged with the lower block 61 of the lower body 6 , so that the lower cover 1 and the lower end of the lower body 6 are sealed and installed.

[0039] like Figure 1 , Figure 2 , Figure 4 As shown, an upper clamping block 62 is fixedly connected to the side wall of the lower body 6 , and an upper buckle 101 is fixedly connected to the side wall of the upper cover 10 . The upper buckle 101 is clamped and installed with the upper clamping block 62 .

[0040] The upper buckle 101 of the upper cover 10 is engaged with the upper clamping block 62 of the lower body 6 , so that the upper cover 10 and the upper end of the lower body 6 are sealed and installed.

[0041] The working principle of an automobile engine fuse box provided by the utility model is as follows:

[0042] By connecting the fuse 9 to PCBA7, PCBA7 is sealed and installed through the upper body 8 and the lower body 6, and the upper cover 10 and the lower cover 1 are sealed and buckled on both ends of the lower body 6, the connection between the internal parts is not complicated, the wiring harness is reduced, the whole product is light in weight, small in size, and simple in product. The copper busbar on the MIDI insurance rivet assembly 2 is connected to the power input position, and the current of the high-power electrical appliances is directly distributed from the power supply to the high-power electrical appliances through the MIDI insurance rivet assembly 2. It is assembled on the fuse box as a separate module and selectively installed according to needs to achieve cost reduction and weight reduction.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An automobile engine fuse box, comprising a lower body (6) and an upper body (8), characterized in that: The upper body (8) is snap-fitted and installed inside the lower body (6); an upper cover (10) is snap-fitted and installed on the upper end of the lower body (6); a lower cover (1) is snap-fitted and installed on the lower end of the lower body (6); a PCBA (7) is snap-fitted and installed inside the lower body (6); a pin end of the PCBA (7) penetrates the upper body (8); and a fuse (9) is plugged and installed on the pin end of the PCBA (7); the fuse (9) is located inside the upper body (8); a MIDI insurance plastic seat (5) for installing a MIDI insurance riveting assembly (2) is snap-fitted and installed on one side of the lower body (6); and the upper cover (10) is arranged outside the MIDI insurance plastic seat (5).

2. An automobile engine fuse box according to claim 1, characterized in that: A plurality of sets of fasteners (3) are fixedly connected to the MIDI safety plastic seat (5), and the MIDI safety riveting assembly (2) is snap-fitted and installed on the plurality of sets of fasteners (3).

3. The automobile engine fuse box according to claim 1, characterized in that: A mounting frame (64) is fixedly connected to one side of the lower body (6), a docking frame (41) is clamped and mounted on the mounting frame (64), and a mounting bracket (4) is fixedly connected to one side of the docking frame (41).

4. The automobile engine fuse box according to claim 1, characterized in that: The inner wall of the lower body (6) is fixedly connected with an inner clamping block (63), the side wall of the upper body (8) is fixedly connected with a fixing block (81), the fixing block (81) is engaged with the inner clamping block (63), and the lower end of the upper body (8) is mounted in abutment with the inner wall of the lower body (6).

5. The automobile engine fuse box according to claim 4, characterized in that: The side wall of the lower body (6) is fixedly connected with a lower clamping block (61), and the side wall of the lower cover (1) is fixedly connected with a lower buckle (11), and the lower buckle (11) is clamped and installed with the lower clamping block (61).

6. The automobile engine fuse box according to claim 5, characterized in that: An upper clamping block (62) is fixedly connected to the side wall of the lower body (6), and an upper buckle (101) is fixedly connected to the side wall of the upper cover (10), and the upper buckle (101) is clamped and installed with the upper clamping block (62).

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