Fuse box for vehicle battery

Abstract

A fuse box for a battery of a vehicle, comprising: a lower shell having a space for accommodating a fuse therein and placing a bus bar for electrically connecting a battery and the fuse; a plate-shaped upper shell having a through hole formed in a middle thereof and a first extension portion extending upward along a circumference of the through hole, wherein the upper shell is assembled on an upper side of the lower shell; and a fuse cover coupled to the upper side of the upper shell to cover the fuse exposed through the through hole of the upper shell.

Description

Technical Field

[0001] The invention relates to a fuse box for a battery of a vehicle. Background Art

[0002] Generally, a vehicle is equipped with various electrical devices for the operation of the vehicle itself and the convenience of passengers, and these electrical devices are electrically connected to a battery and a generator to receive power required for operation, and are operated by a switch operation of the driver and electronic control of a controller.

[0003] In addition, a fuse is provided on the power line of the electrical equipment. When the current is too large due to an abnormality or overload of the electrical system, the fuse will be heated and short-circuited to protect the electronic equipment. The fuse is integrated / installed in the fuse box for easy management.

[0004] On the other hand, in electric vehicles equipped with high-voltage batteries, it should be considered that the fuse box for installing the fuse of the high-voltage battery should meet design conditions such as the optimal size to reduce design cost and weight, the minimum number of openings that can easily replace the fuse in the event of a failure and improve water tightness, ensuring robustness against external impacts, electromagnetic shielding, and easy access to the inside of the battery.

[0005] However, the design of the existing fuse box does not take all of the above design conditions into consideration. Therefore, it is necessary to develop a technology for a fuse box for a battery of a vehicle that has a simple structure, improves water tightness, and ensures robustness and electromagnetic shielding performance in consideration of the above design conditions.

[0006] The information disclosed in this Background of the Invention section is for assisting understanding of the background of the invention and should not be construed as an admission that it constitutes any part of the prior art. Summary of the invention

[0007] An object of the present invention is to provide a fuse box for a battery of a vehicle, which has a simple structure, can improve water tightness, and ensure robustness and electromagnetic shielding performance.

[0008] According to an embodiment of the present invention, a fuse box for a battery of a vehicle includes: a lower shell having a space for accommodating a fuse and placing a bus bar and the fuse for electrically connecting a battery; a plate-shaped upper shell having a through hole formed in a middle thereof and a first extension portion extending upward along the circumference of the through hole, the upper shell being assembled on an upper side of the lower shell; and a fuse cover coupled to the upper side of the upper shell to cover the fuse exposed through the through hole of the upper shell.

[0009] The lower shell may include at least one of the following: a fuse placement portion in which the fuse is accommodated and placed; a fuse fastening portion, which is located on both sides of the fuse placement portion and is fastened to the fuse; a bus bar placement portion, which places bus bars respectively connected to two electrodes of the battery; a bus bar fastening portion, which is fastened to one of the bus bars; or a first assembly hole, which is used for assembly with the upper shell.

[0010] When the fuse is seated on the fuse seating portion, a gap having a predetermined length may be formed between at least one end of the fuse and an inner wall of the fuse seating portion.

[0011] A partition wall having a predetermined height may be arranged on at least one side of the bus bar seating portion.

[0012] The upper case may include: a first coupling portion coupled to the battery upper case around the through hole; and a second coupling portion coupled to the fuse cover around the through hole.

[0013] The first coupling portion may include an embedding nut formed by injection molding, and a lower end surface of the first coupling portion may include a positioning hole for adjusting a position of the embedding nut at the time of injection molding of the embedding nut.

[0014] The inner side surface of the insert nut may include threads, the inner bottom surface thereof may be closed, and the outer side surface thereof may be embossed.

[0015] The fuse box for a battery of a vehicle may further include: an upper shell seal, the upper shell seal including a plate-shaped body having a non-circular through hole formed in a middle portion thereof; a second extension portion extending upward along an edge of the body to a predetermined height; and a protrusion having a predetermined area along the edge of the body and protruding from an upper surface of the body, wherein the upper shell seal is coupled to an upper side of the upper shell.

[0016] The upper housing may have a second assembly hole for assembling the upper housing seal, the second assembly hole being disposed around the first extension, and the first protrusion may be disposed on a lower surface of the upper housing seal and may be assembled to the upper housing through the second assembly hole.

[0017] The inner side of the fuse cover may have an inner wall having a predetermined height and spaced apart from the circumference of the fuse cover, and the fuse cover seal may be disposed in a space between the circumference of the fuse cover and the inner wall and may be coupled to the first extension of the upper case.

[0018] The fuse cover may be assembled with the fuse cover seal and may include an anti-separation assembly portion preventing the fuse cover seal from being separated; and the second protrusion may be disposed on one surface of the fuse cover seal and may be assembled with the anti-separation assembly portion.

[0019] The anti-separation assembly part may include: a third assembly hole through which the second protrusion is assembled; and an anti-separation part that prevents the second protrusion from separating. The second protrusion may include a neck and a head, the head being provided at the upper end of the neck and having a width that narrows from the lower end to the upper end; and the width of the lower end of the head may be greater than the diameter of the third assembly hole, and the lower end of the head may be stuck at the upper end of the anti-separation part to prevent the second protrusion from separating.

[0020] The separation prevention portion may include a recessed portion recessed from an upper surface of the fuse cover.

[0021] The outer side surface of the inner wall of the fuse cover may include a plurality of recesses, the inner side surface of the fuse cover seal may include a third protrusion inserted into one of the recesses, and its outer side surface may include a toothed first locking portion, and the inner side surface of the first extension portion of the upper shell may include a toothed second locking portion.

[0022] The fuse cover may further include a third coupling portion coupled to the second coupling portion.

[0023] The fuse box for a battery of a vehicle may further include: a bus bar cover covering one bus bar placed on the bus bar seating portion, wherein the bus bar cover may be hinged to the lower case to be opened and closed by the hinge.

[0024] The fuse box for a battery of a vehicle may further include: a main cover covering the fuse cover and made of a steel material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a view showing a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0026] Figure 2 is an exploded perspective view of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0027] Figure 3 is a view showing a lower case of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0028] Figure 4 is a view showing a state in which a fuse and a bus bar are housed in a lower case of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0029] Figure 5 1 is a view showing a state in which a bus bar cover coupled to a lower case of a fuse box for a vehicle according to an embodiment of the present invention is opened and closed.

[0030] Figure 6is a view showing an upper case of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0031] Figure 7 is a view for describing a first coupling portion of an upper case of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0032] Figure 8 is a view showing an upper surface of an upper case sealer of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0033] Fig. 9 is a view showing a lower surface of an upper case seal of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0034] Fig.10 is a view showing that an upper housing seal is assembled in an upper housing of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0035] Fig.11 1 is a view showing that an upper case assembled with an upper case sealer is assembled in a battery upper case in a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0036] Fig.12 is a view showing a fuse cover of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0037] Fig.13 1 is a view showing that a fuse cover seal is assembled in a fuse cover of a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0038] Fig.14 It is a view for describing a coupling relationship of a fuse cover, a fuse cover seal, and an upper case in a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0039] Fig.15 is a view for describing a process of replacing a fuse in a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0040] Fig.16 is a view for describing that electromagnetic waves are shielded in a fuse box for a battery of a vehicle according to an embodiment of the present invention.

[0041] Fig.17 1 is a view for describing an assembling process of a fuse box for a battery of a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to describe the various embodiments of the present invention disclosed herein, only a specific structural or functional description will be provided. Therefore, the embodiments of the present invention can be implemented in various forms, and the present invention should not be interpreted as being limited to the embodiments described herein.

[0043] Since the embodiments of the present invention may be variously modified and may have several forms, specific embodiments will be shown in the drawings and described in detail in this specification or disclosure. However, it should be understood that the present invention is not limited to specific embodiments, but includes all modifications, equivalents and substitutions without departing from the scope and spirit of the present invention.

[0044] Terms such as "first", "second", etc. may be used to describe various components, but these components should not be construed as limited to these terms. These terms are only used to distinguish one component from another. For example, a "first" component may be referred to as a "second" component, and a "second" component may also be similarly referred to as a "first" component without departing from the scope of the present invention.

[0045] It should be understood that when an element is referred to as being "connected to" or "coupled to" another element, it may be directly connected to or directly coupled to the other element, or there may be other elements between them to connect to or couple to the other element. On the other hand, it should be understood that when an element is referred to as being "directly connected to" or "directly coupled to" another element, it may be connected to or coupled to the other element without another element being present therebetween. In addition, other expressions describing the relationship between structural elements, i.e., "between," "directly between," "adjacent," "directly adjacent," etc., should be interpreted in the same manner as described above.

[0046] The terms used in this specification are only used to describe specific embodiments, rather than to limit the present invention. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form. It will be further understood that when used in this specification, the words "comprise" or "have" specify the presence of the features, steps, numbers, operations, elements, components or groups thereof, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components or groups thereof.

[0047] Unless otherwise specified, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. It should be understood that the terms defined in the dictionary have the same meaning as the contextual meaning in the relevant art, and unless the context clearly indicates otherwise, these terms should not be given an ideal or overly formal definition.

[0048] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals shown in each of the drawings represent the same elements.

[0049] like Figure 1 and Figure 2 As shown, a fuse box for a battery of a vehicle according to an embodiment of the present invention may include: a lower shell 100, which is provided with a space for accommodating a fuse 800 and placing a bus bar 900 for electrically connecting the battery and the fuse 800; a plate-shaped upper shell 200, which has a through hole formed in the middle thereof, includes a first extension portion 210 extending upward along the circumference of the through hole, and is assembled on the upper side of the lower shell 100; and a fuse cover 300, which is combined to the upper side of the upper shell 200 to cover the fuse 800 exposed through the through hole of the upper shell 200, and may also include a main cover 700 covering the fuse cover 300.

[0050] refer to Figure 3 The lower shell 100 can be configured to include at least one of the following: a fuse placement portion 110 in which the fuse 800 is accommodated and placed; a fuse fastening portion 120 located on both sides of the fuse placement portion 110 and fastened to the fuse 800; a bus bar placement portion 130 for placing a bus bar 900 respectively connected to two electrodes of the battery; a bus bar fastening portion 140 fastened to the bus bar 900 and a first assembly hole 150 for assembly with the upper shell 200.

[0051] Specifically, the fuse seating portion 110 may be formed such that when the fuse 800 is seated on the fuse seating portion 110, a gap (G) having a predetermined length is formed between both ends of the fuse 800 and the inner wall of the fuse seating portion 110. According to an embodiment, when the fuse 800 is seated on the fuse seating portion 110, the gap (G) between both ends of the fuse 800 and the inner wall of the fuse seating portion 110 may be 1.5 mm.

[0052] As described above, when the fuse 800 is seated on the fuse seating portion 110, the fuse box according to the present invention can prevent the lower housing 100 from catching fire when the fuse is heated by forming a gap (G) having a predetermined length between both ends of the fuse 800 and the inner wall of the fuse seating portion 110.

[0053] In addition, a partition wall 132 having a predetermined height may be formed on at least one side of the bus bar seating portion 130. As described above, by forming the partition wall 132 having a predetermined height on at least one side of the bus bar seating portion 130, the bus bar 900 may be more stably fixed to the bus bar seating portion 130 to maintain the layout of the initial state.

[0054] Furthermore, in the present invention, the fuse fastening portion 120 and the bus bar fastening portion 140 may be formed by insert molding with bolts. Figure 4, both ends of the fuse 800 may be coupled and fastened to the fuse fastening part 120 in which the bolts are inserted, and the bus bars 900 respectively connected to the two electrodes of the battery may be fastened to the bus bar fastening parts 140 , respectively.

[0055] Reference Figure 5 , the bus bar cover 600 may cover the bus bar 900 placed on the bus bar placement portion 130. Here, since the bus bar 900 is connected to the high voltage battery and conducts high voltage, a safety accident may occur when an operator's hand touches the bus bar 900 during assembly or disassembly of the fuse 800 due to a malfunction of the fuse 800. In the present invention, by providing the bus bar cover 600 covering the bus bar 900 in the lower case 100, a safety accident caused by an operator's hand touching the bus bar 900 during assembly or disassembly of the fuse 800 can be prevented.

[0056] According to an embodiment, Figure 5 As shown, the bus bar cover 600 is hinged to the lower case 100 such that the bus bar cover 600 can be opened and closed by the hinge.

[0057] Reference Figure 6 and Fig.11 , the upper case 200 may include: a first coupling portion 220 disposed around the through hole and coupled to the battery upper case 910; and a second coupling portion 230 disposed around the through hole and coupled to the fuse cover 300. At this time, the upper case 200 may be made of a plastic material as a non-conductive substance.

[0058] Here, the first coupling part 220 coupled with the battery upper case 910 may be formed by injection molding with an embedding nut, and the second coupling part 230 may be formed by injection molding with an embedding nut.

[0059] Reference Figure 7 , the first coupling part 220 is described in detail. As mentioned above, the first coupling part 220 can be formed by injection molding of an embedded nut, and a positioning hole 222 can be provided on its lower end surface for adjusting the position of the corresponding embedded nut during the injection molding process.

[0060] In addition, refer to Figure 7 The inner side surface of the embedded nut of the first coupling portion 220 may be provided with threads, the inner bottom surface thereof may be closed, and the outer side surface thereof may be hatched.

[0061] On the other hand, referring to Figure 7 The arrow indicating water flow in the figure indicates that moisture may flow into the embedded nut where the bolt is coupled to the first coupling portion 220. In the present invention, the moisture inflow problem can be prevented by using an embedded nut with a closed inner bottom surface.

[0062] In addition, by forming hatching on the outer side surface of the embed nut, the injection molding material and the embed nut can be molded more firmly when the insert is injected, thereby preventing moisture from entering the outer side surface of the embed nut.

[0063] Reference Figure 8 and Fig. 9 , the upper housing seal 400 coupled to the upper side of the upper housing 200 may include: a plate-shaped body 410 having a non-circular through hole formed in the middle thereof; a second extension 420 extending upward to a predetermined height along the edge of the body; and a protrusion 430 having a predetermined area along the edge of the body and protruding from the upper surface of the body. At this time, the upper housing seal 400 may be made of a rubber material.

[0064] Specifically, refer to Fig.11 , the upper case sealer 400 is coupled to the upper side of the upper case 200 to serve as a watertight surface of the inner side surface of the battery upper case 910 .

[0065] More specifically, as described above, the upper case sealer 400 has a plurality of protrusions 430 having a predetermined area along the edge of the body and protruding from the upper surface of the body to increase a contact area with the battery upper case 910 , thereby improving waterproof performance.

[0066] In addition, the upper case sealer 400 according to the present invention includes a second extension portion 420 extending upward along the edge of the body to a predetermined height to increase a contact area with the battery upper case 910 , thereby preventing water from entering the interior of the battery pack.

[0067] In addition, refer to Figure 6 , the upper housing seal 400 may include a second assembly hole 250 for assembling the upper housing seal 400, the second assembly hole 250 is arranged around the first extension portion 210, and refers to Fig. 9 , the lower surface of the upper housing seal 400 may be provided with a first protrusion 440 assembled in the second assembly hole 250. In other words, the first protrusion 440 formed on the lower surface of the upper housing seal 400 is coupled to the second assembly hole 250 formed in the upper housing 200, and thus may be coupled to the upper side of the upper housing 200 of the upper housing seal 400.

[0068] Reference Fig.12 , the fuse cover 300 may be provided with inner walls 310 having a predetermined height and spaced at predetermined distances along the circumference of the fuse cover 300. As described above, Fig.13 and Fig.14As shown, the fuse cover seal 500 and the first extension portion 210 of the upper case 200 may be inserted into the space between the fuse cover 300 and the inner wall 310 and combined.

[0069] The combination relationship of the upper housing 200, the fuse cover 300 and the fuse cover seal 500 can be referred to Fig.14 To describe, the fuse cover 300 can be assembled with the fuse cover seal 500, the fuse cover 300 can be provided with an anti-separation assembly part 320 that prevents the fuse cover seal 500 from being separated, and one surface of the fuse cover seal 500 can be provided with a second protrusion 510, and the second protrusion 510 is assembled with the anti-separation assembly part 320.

[0070] More specifically, referring to each component, the anti-separation assembly portion 320 may include: a third assembly hole 322 through which the second protrusion 510 passes and is assembled; and an anti-separation portion 324 that prevents the second protrusion 510 from being separated. In one embodiment, the anti-separation portion 324 may include a recessed portion recessed from the upper surface of the fuse cover 300.

[0071] In addition, the second protrusion 510 may include a neck 512 and a head 514, the head 514 being formed at the upper end of the neck 512 and having an area (or width) that narrows from the lower end to the upper end. According to an embodiment, the head 514 may be formed as follows: Fig.14 According to an embodiment, the fuse cover seal 500 may be made of an elastic rubber material.

[0072] On the other hand, the width of the lower end of the head 514 may be formed to be larger than the diameter of the third assembly hole 322, and the neck 512 is preferably formed to be equal to or smaller than the diameter of the third assembly hole 322. In other words, the neck is formed to be equal to or smaller than the diameter of the third assembly hole, the width of the lower end of the head is formed to be larger than the diameter of the third assembly hole, and therefore, when Fig.14 As shown, when the second protrusion is coupled to the anti-separation assembly, the lower end of the head is caught at the upper end of the anti-separation portion, thereby preventing the fuse cover seal 500 from being separated from the fuse cover.

[0073] In addition, refer to Fig.14 , a plurality of recesses 312 may be provided on the outer side surface of the inner wall 310 of the fuse cover 300, the inner side surface of the fuse cover seal 500 may be provided with a third protrusion 520 inserted into the recess 312, and the outer side surface of the fuse cover seal 500 may be provided with a first locking portion 530 having a tooth shape. In addition, the inner side surface of the first extension portion 210 of the upper housing 200 may be provided with a second locking portion 212 having a tooth shape.

[0074] In addition, the fuse cover 300 may further include a third coupling portion 330 for coupling to the second coupling portion 230 of the upper case 200. Here, the third coupling portion 330 may be implemented by assembling a bushing in a hole formed in a side mounting portion of the fuse cover.

[0075] When the fuse cover is assembled with the upper case 200, if the formed hole in the side mounting portion of the fuse cover is tightened by a bolt having a force of a predetermined size or more, a problem of damaging the side mounting portion of the fuse cover may occur. In the present invention, in order to prevent such a problem, by providing a third coupling portion 330 for assembling the bushing coupled with the upper case 200 in the fuse cover 300, the fuse cover 300 can be assembled with the upper case 200 more stably without damaging the side mounting portion of the fuse cover 300.

[0076] The main cover 700 covers the fuse cover 300 and may be made of steel. Fig.16 , by using the main cover 700 made of steel covering the fuse cover 300, the rigidity can be ensured from the influence of external impact, and at the same time, the electromagnetic wave can be conducted along the battery box and led to the ground, thereby shielding the electromagnetic wave.

[0077] When the fuse 800 in the fuse box of the vehicle battery according to the present invention having the structural features as described above fails or needs to be checked, Fig.15 As shown, the main cover 700 and the fuse cover 300 are removed so that the fuse 800 can be inspected or replaced.

[0078] Fig.17 1 is a view for describing an assembly process of a fuse box for a battery of a vehicle according to an embodiment of the present invention. Fig.17 , describes a process of assembling a fuse box for a battery of a vehicle according to the present invention. The bus bar 900 is placed on the bus bar seating portion 130 of the lower housing 100, the fuse 800 is placed on the fuse seating portion 110, and then the bus bar fastening portion and the fuse fastening portion are fastened with nuts, thereby fixing the bus bar 900 and the fuse 800 to the lower housing 100. After that, the bus bar cover 600 is coupled to the lower housing 100 by a hinge connection to cover the bus bar 900, and then the upper housing 200 coupled to the upper housing seal 400 is coupled to the upper side of the lower housing 100. Thereafter, the fuse box for a battery of a vehicle can be assembled by a process of coupling the fuse cover 300 coupled with the fuse cover seal 500 to the upper side of the upper housing 200.

[0079] exist Fig.17 The main cover, which is not shown in detail, may be coupled to the upper side of the fuse cover 300 by fixing the assembled fuse box to the battery box.

[0080] In the fuse box according to the present invention, when the fuse 800 is seated on the fuse seating portion 110, gaps having a predetermined length are formed between both ends of the fuse and the inner wall of the fuse seating portion 110, thereby preventing the lower case 100 from catching fire when the fuse 800 is heated.

[0081] In the present invention, by providing the bus bar cover 600 covering the bus bar 900 in the lower case 100 , a safety accident caused by the operator's hand contacting the bus bar 900 during the assembly or disassembly process of the fuse 800 can be prevented.

[0082] In the present invention, by covering the fuse cover 300 with a main cover made of a steel material, rigidity can be ensured from external impact, and at the same time, electromagnetic waves can be conducted along the battery box and guided to the ground, thereby shielding the electromagnetic waves.

[0083] While the present invention has been shown and described with respect to the particular embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention as defined by the following claims.

Claims

1. A fuse box for a battery of a vehicle, include: a lower housing having a space for accommodating a fuse therein and for arranging a bus bar for electrically connecting the battery and the fuse; a plate-shaped upper housing having a through hole formed in a middle portion thereof and a first extending portion extending upward along a circumference of the through hole, the upper housing being assembled on an upper side of the lower housing; a fuse cover coupled to an upper side of the upper housing to cover the fuse exposed through the through hole of the upper housing; a bus bar placement portion for placing bus bars respectively connected to two electrodes of the battery; and a bus bar cover covering one of the bus bars placed on the bus bar seating portion, The busbar cover is hinged to the lower housing to be opened and closed by a hinge.

2. The fuse box according to claim 1, in, The lower housing includes at least one of the following: a fuse housing portion in which the fuse is accommodated and housed; A fuse fastening portion, which is located at both sides of the fuse placement portion and is fastened to the fuse; a bus bar fastening portion fastened to one of the bus bars; and A first assembly hole is used for assembling with the upper shell.

3. The fuse box according to claim 2, in, When the fuse is seated on the fuse seating portion, a gap having a predetermined length is formed between at least one end of the fuse and an inner wall of the fuse seating portion.

4. The fuse box according to claim 2, in, A partition wall having a predetermined height is arranged on at least one side of the bus bar seating portion.

5. The fuse box according to claim 1, in, The upper housing comprises: A first coupling portion coupled to the battery upper housing around the through hole; and A second coupling portion is coupled to the fuse cover around the through hole.

6. The fuse box according to claim 5, in, The first coupling portion includes an embedded nut formed by injection molding, and a lower end surface of the first coupling portion includes a positioning hole, and the positioning hole is used to adjust the position of the embedded nut when the embedded nut is injection molded.

7. The fuse box according to claim 6, in, The inner surface of the embedded nut includes threads, the inner bottom surface of the embedded nut is closed, and the outer surface of the embedded nut is formed with embossing.

8. The fuse box according to claim 5, further comprising: include: An upper shell seal, the upper shell seal comprising a plate-like body having a non-circular through hole formed in the middle thereof; a second extension portion extending upwardly along an edge of the body to a predetermined height; and a protrusion portion having a predetermined area along the edge of the body and protruding from an upper surface of the body, Wherein, the upper shell seal is coupled to the upper side of the upper shell.

9. The fuse box according to claim 8, in, The upper housing has a second assembly hole for assembling the upper housing seal, the second assembly hole is arranged around the first extension portion, and A first protrusion is provided on a lower surface of the upper housing seal, and the first protrusion is assembled to the upper housing through the second assembling hole.

10. The fuse box according to claim 1, in, The inner side of the fuse cover has an inner wall having a predetermined height and spaced apart from the circumference of the fuse cover, and A fuse cover seal is disposed in a space between a circumference of the fuse cover and the inner wall, and is coupled to the first extension portion of the upper case.

11. The fuse box according to claim 10, in, The fuse cover is assembled with the fuse cover seal and includes an anti-separation assembly portion that prevents the fuse cover seal from being separated; and The second protrusion is provided on one surface of the fuse cover seal and is assembled with the separation prevention assembling portion.

12. The fuse box according to claim 11, in, The anti-separation assembly part includes: a third assembly hole through which the second protrusion is assembled; and an anti-separation part that prevents the second protrusion from separating. The second protrusion includes a neck and a head, the head being provided at an upper end of the neck and having a width narrowing from a lower end to an upper end; and The width of the lower end of the head portion is greater than the diameter of the third assembling hole, and the lower end of the head portion is caught at the upper end of the separation prevention portion to prevent the second protrusion from being separated.

13. The fuse box according to claim 12, in, The separation prevention portion includes a recessed portion recessed from an upper surface of the fuse cover.

14. The fuse box according to claim 10, in, The outer surface of the inner wall of the fuse cover includes a plurality of recesses, The inner side surface of the fuse cover seal includes a third protrusion inserted into one of the recesses, and the outer side surface of the fuse cover seal includes a tooth-shaped first locking portion, and An inner side surface of the first extending portion of the upper housing includes a tooth-shaped second locking portion.

15. The fuse box according to claim 5, in, The fuse cover further includes a third combining portion combined to the second combining portion.

16. The fuse box according to claim 1, further comprising: include: The main cover covers the fuse cover and is made of steel material.

Images