CN213635887U

CN213635887U - Fuse assembly

Info

Publication number: CN213635887U
Application number: CN202022749434.5U
Authority: CN
Inventors: 李鸣; 张巧然; 亢策策
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-06
Anticipated expiration: 2030-11-24

Abstract

The utility model provides a fuse assembly, which comprises a fuse box, a fuse with a main body and a conductive part is accommodated in the fuse box, the fuse box comprises a base and an upper cover, an accommodating part for accommodating the main body is enclosed between the base and the upper cover, the conductive part extends out of the accommodating part, a lower protective part arranged at the lower side of the conductive part is arranged on the base, and an upper protective part arranged at the upper side of the conductive part is arranged on the upper cover; the length a and the width b of the connecting part of the conductive part extending out of the accommodating part and connected with the external conductive unit and the width c of the external conductive unit meet the condition that a is more than or equal to 1.2c, and b is more than or equal to c. The utility model discloses a fuse box subassembly, the fuse box can protect the conductive part, effectively prevents operating personnel's electric shock, improves overall structure and injects the size relation between conductive part and the external conductive element, also allows external conductive element to be connected with the conductive part from three direction simultaneously, and its application scope is extensive, and simple structure, and has better practicality.

Description

Fuse assembly

Technical Field

The utility model relates to an electronic components technical field, in particular to fuse subassembly.

Background

The fuse is an electric appliance which fuses a melt by heat generated by itself to break a circuit when a current exceeds a predetermined value. At present in all kinds of vehicles, engineering machine tool, for the protection fuse, be provided with the fuse box usually, the fuse box installation of should being convenient for, and have certain guard action to the fuse, nevertheless because the difference of actual installation environment and fuse specification, the structure of fuse box and all have the difference to the fixed mode of fuse, lead to the commonality poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a fuse assembly, so as to improve the application range thereof.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a fuse assembly comprises a fuse box and a fuse arranged in the fuse box, wherein the fuse is provided with a main body and a conductive part arranged on the main body and connected with an external conductive unit; wherein:

the fuse box comprises a base and an upper cover which are buckled and connected, an accommodating part for accommodating the main body is formed between the base and the upper cover, a communicating part communicated with the accommodating part is formed between the base and the upper cover, a conductive part of the fuse extends out of the accommodating part from the communicating part, a lower protection part arranged on the lower side of the conductive part is arranged on the base, and an upper protection part arranged on the upper side of the conductive part is arranged on the upper cover;

the length a and the width b of a connecting part, extending out of the accommodating part, of the conductive part and connected with the external conductive unit, and the width c of the external conductive unit meet the condition that a is more than or equal to 1.2c, and b is more than or equal to c.

Further, the base and the upper cover are detachably connected.

Further, the base is connected with the upper cover in a clamping mode.

Furthermore, a reinforcing part for reinforcing the upper protection part is arranged on the upper cover.

Furthermore, at least one of the base and the upper cover is provided with a fuse box mounting part.

Furthermore, an insert is arranged on at least one of the base and the upper cover, and the fuse box mounting part comprises a connecting hole formed in the insert.

Further, the conductive part includes a first conductive part integrated on the main body, and a second conductive part detachably connected to the first conductive part, and the second conductive part is configured such that a lap joint area between itself and the external conductive unit is 5 times or more a cross-sectional area of the external conductive unit.

Further, the current-carrying capacity of the second conductive member is at least 4A/mm²。

Furthermore, a gasket capable of tightly abutting against at least one side of the fuse is arranged in the accommodating part.

Further, the pad is made of foam.

Compared with the prior art, the utility model discloses following advantage has:

fuse subassembly, stretch outside the portion of holding through the conductive part that makes the fuse to set up protection portion and lower protection portion, both can protect the conductive part, can effectively prevent the operating personnel electric shock again, in addition, improve overall structure and injecing the size relation between conductive part and the external conductive element, allow external conductive element to be connected with the conductive part from three direction simultaneously, application scope is extensive, and simple structure has better practicality.

Furthermore, the utility model discloses well base and upper cover can be dismantled the connection, install and remove the convenience, and base and upper cover joint link to each other, can further improve and install and remove the convenience. And set up the reinforcement on the upper cover, can improve the structural strength of the upper cover, thus improve the reliability of its application. The base is provided with the insert, and the fuse box mounting part is provided with the connecting hole formed on the insert, so that the fuse box mounting structure has the advantages of simple structure and high connection reliability.

Additionally, the utility model discloses a conductive part is including dismantling the first electrically conductive piece of connection and electrically conductive with the second, does to improve the convenience of installing and removing the maintenance.

The utility model discloses a fuse subassembly sets up the liner in the portion of holding, also is favorable to absorbing the size difference between fuse box and the fuse, through the adjustment liner, is applicable in multiple not unidimensional fuse to improve the application scope of fuse box.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.

In the drawings:

fig. 1 is a schematic structural diagram of a fuse box according to an embodiment of the present invention in an applied state;

FIG. 2 is a front view of the structure shown in FIG. 1;

fig. 3 is a top view of the structure shown in fig. 1.

FIG. 4 is a schematic view of the structure of FIG. 3 without the upper cover;

FIG. 5 is an exploded view of the structure shown in FIG. 1;

fig. 6 is another exploded view of the structure shown in fig. 1.

Description of reference numerals:

1. a base; 2. an upper cover; 3. a fuse; 4. a connecting member; 5. a liner; 6. an external conductive unit;

101. a lower guard portion; 102. a through hole; 103. an insert; 104. a clamping block;

201. an upper guard portion; 202. a reinforcing portion; 203. a clamping hole;

301. a main body; 302. a first conductive member; 303. a second conductive member.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present embodiment relates to a fuse assembly, which includes a fuse and a fuse in an overall design, and a fuse box including a base and an upper cover for mounting the fuse having a main body and a conductive portion. Meanwhile, an accommodating part for accommodating the main body and a communication part communicated with the accommodating part are formed between the upper cover and the base, and the conductive part extends out of the accommodating part through the communication part. An upper protection part for protecting the upper side of the conductive part is also arranged on the upper cover, and a lower protection part for protecting the lower side of the conductive part is also arranged on the base; the length a and the width b of the connecting part, extending out of the accommodating part, of the conductive part and connected with the external conductive unit and the width c of the external conductive unit meet the condition that a is more than or equal to 1.2c and b is more than or equal to c.

An exemplary structure of the fuse block of the present embodiment in the applied state is shown in fig. 1 to 3 based on the overall description above. Here, the fuse 3 is installed between the base 1 and the upper cover 2, and for better understanding of the present embodiment, the structure of the fuse 3 will be described first.

The fuse 3 includes a main body 301, and conductive portions are provided at both ends of the main body 301. In a specific structure, the conductive portion includes a first conductive member 302 and a second conductive member 303 detachably connected, the first conductive member 302 is integrated with the main body 301, the second conductive member 303 is preferably a copper bar, and the current-carrying capacity of the copper bar is at least 4A/mm²

With continued reference to the structure shown in fig. 4, a portion of the second conductive member 303 is connected to the first conductive member 302 in a lap joint manner, specifically, but not limited to, a bolt connection manner. The part of the second conductive member 303 not overlapped with the first conductive member 302 forms a connection part for connecting with the external conductive unit 6, and the length a and the width b of the connection part and the width c of the external conductive unit 6 satisfy a is larger than or equal to 1.2c, b is larger than or equal to c, so that enough size space is reserved to facilitate the connection with the external conductive unit 6. And when the second conductive member 303 is actually connected to the external conductive unit 6, the overlapping area between the second conductive member 303 and the external conductive unit 6 is more than 5 times the cross-sectional area of the external conductive unit 6, so as to ensure the connection reliability. Referring to fig. 4 to 6, the base 1 of the present embodiment includes a bottom plate, and a fuse box mounting portion is disposed on the bottom plate to facilitate mounting the fuse box on an external carrier. In a specific structure, since the base 1 is generally integrally formed by an injection molding process, in order to improve the connection reliability, four through holes 102 are provided at positions near four corners of the bottom plate, and the insert 103 is respectively installed in each through hole 102, and the fuse box installation portion is a connection hole formed in the insert 103.

In a preferred embodiment, the insert 103 is preferably made of a relatively hard metal material, such as stainless steel or iron. The height of the insert 103 is slightly higher than the thickness of the part of the base 1 formed with the through hole 102, and the size difference between the insert and the part is about 0.5mm, so that the base 1 is conveniently fixed on an external carrier by a bolt penetrating through the connecting hole, and the base 1 can be prevented from being damaged by overlarge screwing force.

It should be noted here that the fuse block mounting portion may be provided on the base 1, the upper cover 2, or both the base 1 and the upper cover 2. In addition, the fuse block mounting portion may have other structure than the connection hole, such as a clamping portion for facilitating clamping connection with an external carrier.

Still referring to fig. 4 to 6, in the present embodiment, the base 1 is configured with the lower protection parts 101 extending outward at the left and right sides, two connection holes are respectively formed on the two lower protection parts 101, and side plates are respectively configured at the front and rear sides of the base 1, the height of the side plates is preferably greater than that of the lower protection parts 101, and the space between the two lower protection parts 101 and the two side plates constitutes a lower accommodation cavity for installing the main body 301.

Specifically, two connecting holes are formed in each of the two lower protective portions 101, and for the sake of convenience of overall arrangement, the two connecting holes are arranged vertically in the axial direction, one of the connecting holes is arranged close to the lower accommodating chamber, and the other connecting hole is arranged far away from the lower accommodating chamber.

It should be added to the structure of the base 1 that the lower protection part 101 is preferably integrally formed with the bottom plate, the side plates, etc., and besides, the lower protection part 101, the bottom plate, and the side plates can also be detachably connected, such as clamped connection, which only may result in increased production cost and relatively complicated assembly process.

In order to facilitate connection with the upper cover 2, in this embodiment, the base 1 is further provided with four clamping blocks 104, and as a preferred embodiment, the clamping blocks 104 are provided, and the left side and the right side of each side plate of the base 1 are respectively provided with one clamping block 104, so as to improve the clamping reliability. In this structure, the number of the locking blocks 104 may also be other numbers, so as to connect the base 1 and the upper cover 2 stably.

In this embodiment, the upper cover 2 includes a top plate, four corners of the top plate are respectively provided with a vertical plate extending downwards, and a distance between the left vertical plate and the right vertical plate corresponds to the side plate, so that the upper cover 2 and the base 1 can enclose a containing portion configured to contain the main body 301, and a gap between the front vertical plate and the rear vertical plate can form a communicating portion capable of communicating with the containing portion. In addition, the vertical plates are also respectively provided with a clamping hole 203, and the positions of the clamping holes 203 correspond to the positions of the clamping blocks 104 one by one, so that the upper cover 2 and the base 1 are connected in a clamping manner.

In addition, in the present embodiment, the upper protection portions 201 are further disposed on the left and right sides of the base 1, and extend in a direction away from the accommodating portion relative to the vertical plate, and the upper cover 2 is provided with a reinforcing portion 202 for reinforcing the upper protection portions 201. In a specific structure, the top of the upper protection part 201 is lower than the top surface of the top plate, the reinforcing part 202 includes two reinforcing plates disposed at the top of each upper protection part 201, and the shape of each reinforcing plate is preferably triangular.

In this embodiment, the upper protection part 201, the top plate, the vertical plate and the like are preferably integrally formed by injection molding, and besides, the three parts can also be detachably connected, such as clamping, only the cost can be increased, and the assembly process is relatively complicated.

Through the arrangement of the structure, the base 1 and the upper cover 2 can be connected in a clamping manner through the clamping block 104 and the clamping hole 203, the main body 301 is located in the accommodating part formed by splicing the upper cover 2 and the base 1, the two conductive parts extend outwards from the communicating part, the lower protection part 101 has the functions of supporting and protecting the lower sides of the conductive parts, and the upper protection part 201 plays a role of protecting the upper sides of the conductive parts.

When the fuse protector is applied specifically, the base 1 is fixed on an external carrier, then the fuse 3 is installed, the first conductive piece 302 and the second conductive piece 303 are fixedly arranged on the lower protection part 101 on the corresponding side through the connecting piece 4 such as a bolt, the second conductive piece 303 can be connected with the external conductive unit 6 through the connecting piece 4, the second conductive piece 303 and the external conductive unit 6 can be screwed on the lower protection part 101 through the connecting piece 4, and then the upper cover 2 is connected with the base 1 in a clamping manner, so that the fuse protector is convenient to assemble and disassemble. Finally, it should be noted that, in the above structure, the base 1 and the upper cover 2 are preferably connected in a snap-fit manner, and besides, other detachable or non-detachable connection manners, such as bolt connection, riveting, welding, bonding, etc., may also be used between the two.

In order to facilitate the installation of the fuse 3, a liner 5 is arranged in the accommodating part, and in a better practical mode, the liner 5 is made of foam, and the foam with good insulating property and good heat conducting property is preferably selected from the foam, so that heat accumulation is prevented. The foam 5 is bonded to the base 1 and/or the upper cover 2, so that the fuse 3 can be conveniently mounted to protect the periphery of the main body of the fuse 3.

In this embodiment, the gasket 5 is preferably "U" shaped, and when the gasket 5 is installed in the accommodating portion, the front and rear sides and the lower portion of the gasket 5 can be abutted against the corresponding sides of the main body 301, and the fuse box can be adapted to various fuses 3 of different sizes by adjusting the gasket 5, which is beneficial to absorbing the size difference between the fuse box and the fuse 3, thereby improving the application range of the fuse box. Further, the pads 5 are preferably arranged in two at a left-right interval, which can stably fix the fuse 3 and prevent heat accumulation.

The fuse box of the utility model can protect the conductive part and effectively prevent operators from electric shock by extending the conductive part of the fuse 3 out of the accommodating part and arranging the upper protection part 201 and the lower protection part 101 at the same time; in addition, the overall structure is improved, the size relation between the conductive part and the external conductive unit is limited, the external conductive unit 6 is allowed to be connected with the conductive part from three directions, the application range is wide, the structure is simple, and the practicability is good.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuse assembly, characterized by: the fuse box comprises a fuse box body and a fuse (3) arranged in the fuse box body, wherein the fuse (3) is provided with a main body (301) and a conductive part arranged on the main body (301) and connected with an external conductive unit (6); wherein:

the fuse box comprises a base (1) and an upper cover (2) which are connected in a buckling manner, an accommodating part for accommodating the main body (301) is formed between the base (1) and the upper cover (2), a communicating part communicated with the accommodating part is formed between the base (1) and the upper cover (2), a conductive part of the fuse (3) extends out of the accommodating part from the communicating part, a lower protection part (101) arranged on the lower side of the conductive part in a blocking manner is arranged on the base (1), and an upper protection part (201) arranged on the upper side of the conductive part in a blocking manner is arranged on the upper cover (2);

the length a and the width b of a connecting part of the conductive part extending out of the accommodating part and connected with the external conductive unit (6) and the width c of the external conductive unit (6) meet that a is more than or equal to 1.2c, and b is more than or equal to c.

2. A fuse assembly as recited in claim 1, wherein: the base (1) and the upper cover (2) are detachably connected.

3. A fuse assembly as recited in claim 2, wherein: the base (1) is connected with the upper cover (2) in a clamping manner.

4. A fuse assembly as recited in claim 1, wherein: a reinforcing part (202) for reinforcing the upper protection part (201) is arranged on the upper cover (2).

5. A fuse assembly as recited in claim 1, wherein: at least one of the base (1) and the upper cover (2) is provided with a fuse box mounting part.

6. A fuse assembly as recited in claim 5, wherein: an insert (103) is arranged on at least one of the base (1) and the upper cover (2), and the fuse box mounting part comprises a connecting hole formed in the insert (103).

7. A fuse assembly as recited in claim 1, wherein: the conductive part comprises a first conductive piece (302) integrated on the main body (301), and a second conductive piece (303) detachably connected with the first conductive piece (302), and the second conductive piece (303) is configured to enable the overlapping area of the second conductive piece (302) and the external conductive unit (6) to be more than 5 times of the cross-sectional area of the external conductive unit (6).

8. A fuse assembly as recited in claim 7, wherein: the current-carrying capacity of the second conductive member (303) is at least 4A/mm²。

9. A fuse assembly as recited in any one of claims 1-8, wherein: a gasket (5) capable of tightly abutting against at least one side of the fuse (3) is arranged in the accommodating part.

10. A fuse assembly as recited in claim 9, wherein: the pad (5) is made of foam.