CN212380381U - Distribution box and fuse thereof - Google Patents

Abstract

The utility model provides a block terminal and fuse. The fuse includes shell, fuse and resistive layer, the shell includes accommodation space, the fuse is located in the accommodation space, the resistive layer set up in the surface of shell, the shell includes first end, the fuse with the resistive layer is in the first end of shell is connected. The utility model provides a fuse and resistor all regard as solitary component to use in the distribution box, these two products will increase the volume of distribution box, and install and use inconvenient technical problem.

Description

Distribution box and fuse thereof

Technical Field

The utility model relates to a fuse technical field, in particular to block terminal and fuse thereof.

Background

The existing fuse and the existing resistor are used in the distribution box as separate elements, and the two products can increase the volume of the distribution box and are inconvenient to install and use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a block terminal and fuse thereof to solve foretell technical problem.

The utility model provides a fuse, including shell, fuse and resistance layer, the shell includes accommodation space, the fuse is located in the accommodation space, the resistance layer set up in the surface of shell, the shell includes first end, the fuse with the resistance layer is in the first end of shell is connected.

The fuse further comprises an arc extinguishing piece, the fuse wire comprises a first bending section, a second bending section and a connecting section, the second bending section is opposite to the first bending section, the first bending section is connected with the connecting section of the second bending section, the first bending section is close to the first end, the first bending section, the connecting section and the second bending section are connected to form an accommodating cavity, and the arc extinguishing piece is arranged in the accommodating cavity.

The fuse further comprises a first conducting strip, the first conducting strip is arranged on one side of the first end of the shell and electrically connected with the first bending section of the fuse wire, and the first conducting strip is electrically connected with the resistance layer.

The fuse further comprises a guide connection layer, the resistance layer comprises an orientation third end of the first conducting strip, the first end of the shell is flush with the third end of the resistance layer, the first end of the shell and the third end of the resistance layer jointly form a containing surface, the guide connection layer is arranged between the first conducting strip and the containing surface, and the first conducting strip and the resistance layer are electrically connected through the guide connection layer.

The fuse further comprises a second conducting strip, the shell further comprises a second end opposite to the first end, the second conducting strip is arranged on one side of the second end of the shell, and the second conducting strip is electrically connected with the second bending section of the fuse.

The fuse further comprises a plated piece, the resistor layer further comprises a fourth end opposite to the third end, the plated piece is fixed on the outer surface of the outer shell, and the plated piece is electrically connected with the fourth end of the resistor layer.

The fuse further comprises an adapter piece, and the adapter piece is fixedly connected to the electroplating piece.

The fuse comprises a wire bundle, and the wire bundle is fixed on the adapter.

Wherein, the surface of the resistance layer is provided with the insulating layer.

The utility model provides a distribution box, including foretell fuse.

To sum up, this application shunts the electric current on the fuse through the resistive layer of locating the shell surface to reduce the electric current that flows through on the fuse, this not only can restrict the electric current that flows through on the fuse, increases the life of fuse, the volume of fuse can also remain unchanged moreover. When the fuse is applied to the distribution box, the use of a resistor is avoided, and the volume of the distribution box is reduced. Therefore, when the distribution box does not use the resistor, materials such as a shell, a winding core rod, a nichrome wire and a cement filling material in the resistor are saved, and the cost is saved; meanwhile, the electric connection material, the processing cost and the production cost of the fuse and the resistance wire which are connected in parallel can be saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a fuse provided in an embodiment of the present application.

Fig. 2 is an exploded view of the fuse shown in fig. 1.

Fig. 3 is an electrical schematic diagram of the fuse of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The application provides a distribution box, including fuse. The distribution box of this application is small. The distribution box of this application is high voltage distribution box. The fuse will be described in detail as follows.

Referring to fig. 1-3, the fuse includes a housing 3, a fuse 5 and a resistive layer 7, the housing 3 includes a receiving space 12, the fuse 5 is disposed in the receiving space 12, the resistive layer 7 is disposed on an outer surface of the housing 3, the housing 3 includes a first end 31, and the fuse 5 and the resistive layer 7 are connected at the first end 31 of the housing 3. It is understood that the resistive layer 7 may be disposed on any one of the outer surfaces of the outer shell 3, or on multiple outer surfaces of the outer shell 3, e.g., the resistive layer 7 may be disposed on the outer surface of the outer shell 3. The resistive layer 7 may be formed on the outer surface of the outer case 3 by a coating method. The housing 3 is used for supporting the fuse shape, insulating the fuse wire 5 and conducting heat, and the material of the housing 3 may be ceramic. The cross section of the housing 3 can be circular or square, and the size and the shape of the housing 3 are not limited by the application. The fuse 5 is mainly composed of copper or copper-silver alloy. The fuse 5 is mainly used for blowing when the current on the fuse 5 exceeds the use range, thereby protecting the circuit. The resistance layer 7 is a thin film resistance layer 7, and the thin film resistance layer 7 forms a certain resistance, which can shunt current on the fuse 5, so as to limit the current on the fuse 5, and transfer the generated heat to the shell 3, and radiate the heat through the shell 3, or the thin film resistance layer 7 itself radiates the heat to the air. The resistive layer 7 may be a variety of printed or non-reticulated structures. Alternatively, the resistive layer 7 is composed of an alloy of nickel, chromium, silver, palladium, or the like. The present application does not limit the overall size or shape of the resistive layer 7. The outer surface of the resistive layer 7 is provided with an insulating layer to improve the safety of the fuse.

Therefore, the current on the fuse wire 5 is divided by the resistance layer 7 arranged on the outer surface of the shell 3 to reduce the current flowing on the fuse wire 5, which not only can limit the current flowing on the fuse wire 5 and prolong the service life of the fuse, but also can keep the volume of the fuse unchanged. When the fuse is applied to the distribution box, the use of a resistor is avoided, and the volume of the distribution box is reduced. Therefore, when the distribution box does not use the resistor, materials such as a shell, a winding core rod, a nichrome wire and a cement filling material in the resistor are saved, and the cost is saved; meanwhile, the electric connection material, the processing cost and the production cost of the fuse and the resistance wire which are connected in parallel can be saved.

Referring to fig. 2, the fuse further includes an arc extinguishing member 4, the fuse 5 includes a first bending section 51, a second bending section 52 opposite to the first bending section 51, and a connecting section 53 connecting the first bending section 51 and the second bending section 52, the first bending section 51 is close to the first end 31, the first bending section 51, the connecting section 53, and the second bending section 52 are connected to form a receiving cavity 54, the arc extinguishing member 4 is disposed in the receiving cavity 54, and the arc extinguishing member 4 is configured to extinguish an arc generated in a fusing process of the fuse 5. Specifically, after the arc extinguishing member 4 is accommodated in the accommodating cavity 54, the arc extinguishing member 4 is connected to the first bending section 51, the connecting section 53 and the second bending section 52, and the arc extinguishing member 4 can extinguish the arc generated at the fusing position no matter whether the first bending section 51, the connecting section 53 or the second bending section 52 of the fuse 5 is fused to generate the arc. The arc extinguishing member 4 is made of quartz sand.

The fuse further comprises a first conducting strip 1, the first conducting strip 1 is arranged on one side of the first end 31 of the shell 3, the first conducting strip 1 is electrically connected with the first bending section 51 of the fuse wire 5, and the first conducting strip 1 is electrically connected with the resistance layer 7. Specifically, the first conductive sheet 1 is used for current input to input a current to the fuse 5 and the resistive layer 7, and the current on the resistive layer 7 can realize current division on the fuse 5. The fuse is fixedly mounted to other elements of the distribution box through the first conductive plate 1 to fix one end of the fuse. The first conductive sheet 1 can serve as a medium for heat conduction. In this application, the first conductive sheet 1 may be a copper bar. The first conductive sheet 1 is bent into an L-shape. Of course, in other implementations, the first conductive sheet 1 may have other shapes, such as a sheet shape without being bent, or a sheet shape with being bent into other shapes, and the shape of the first conductive sheet 1 is not limited in this application.

The fuse further comprises a second conductive plate 11, the housing 3 further comprises a second end 32 opposite to the first end 31, the second conductive plate 11 is disposed on one side of the second end 32 of the housing 3, and the second conductive plate 11 is electrically connected to the second bending section 52 of the fuse 5. Specifically, the second conductive sheet 11 serves to output a current flowing through the fuse 5. The fuse is fixedly mounted to other elements of the distribution box by the second conductive plate 11 to fix the other end of the fuse. The second conductive sheet 11 may also serve as a medium for heat dissipation. In this application, the second conductive sheet 11 may be a copper bar. The second conductive sheet 11 is bent into an L-shape. Of course, in other implementations, the second conductive sheet 11 may also have other shapes, such as a sheet without being bent, or a sheet with being bent into other shapes, and the shape of the second conductive sheet 11 is not limited in this application.

The fuse further comprises a fixing member 2, the fixing member 2 being for fixing the first conductive plate 1 with a first end 31 of the housing 3 and for fixing the second conductive plate 11 with a second end 32 of the housing 3. Specifically, the first end 31 of the housing 3 is provided with a fixing hole 33, the first conductive plate 1 is provided with a fixing hole, the fixing hole 33 on the first end 31 of the housing 3 corresponds to the fixing hole on the first conductive plate 1 one by one, and the fixing member 2 penetrates through the fixing hole 33 on the first end 31 and the fixing hole on the first conductive plate 1 to fix the first conductive plate 1 and the first end 31 of the housing 3. The second end 32 of the housing 3 is provided with a fixing hole, the second conductive plate 11 is provided with a fixing hole, the fixing holes on the second end 32 of the housing 3 and the fixing holes on the second conductive plate 11 are in one-to-one correspondence, and the fixing member 2 penetrates through the fixing holes on the second end 32 and the fixing holes on the second conductive plate 11 to fix the second conductive plate 11 and the second end 32 of the housing 3. The fixing member 2 may be a screw. In this embodiment, the number of the fixing holes on the first end 31 of the housing 3 is 4, the number of the fixing holes on the second end 32 of the housing 3 is 4, the number of the fixing holes on the first conductive plate 1 is 4, and the number of the fixing holes on the second conductive plate 11 is 4. The number of the screws is 8. The first conductive plate 1 is fixed to the first end 31 of the housing 3 by 4 screws, and the second conductive plate 11 is fixed to the second end 32 of the housing 3 by 4 screws.

The fuse further comprises a conducting layer 6, the resistance layer 7 comprises a third end 71 facing the first conducting strip 1, the first end 31 of the outer shell 3 is flush with the third end 71 of the resistance layer 7, the first end 31 of the outer shell 3 and the third end 71 of the resistance layer 7 jointly form a containing surface, the conducting layer 6 is arranged between the first conducting strip 1 and the containing surface, and the first conducting strip 1 is electrically connected with the resistance layer 7 through the conducting layer 6. Specifically, the fixing holes are also formed in the conductive layer 6, the fixing holes in the conductive layer 6 correspond to the fixing holes in the first conductive sheet 1 one to one, and correspond to the fixing holes 33 in the first end 31 of the housing 3 one to one, and when the fixing member 2 penetrates through the fixing holes in the first conductive sheet 1 and the fixing holes in the first end 31 of the housing 3, the fixing member 2 further penetrates through the fixing holes in the conductive layer 6, so that the fixing member 2 can fixedly connect the first conductive member, the conductive layer 6 and the housing 3. Because the conductive layer 6 is arranged between the first conductive sheet 1 and the accommodating surface, the conductive layer 6 is connected with the resistance layer 7, and the conductive layer 6 is connected with the first conductive sheet 1, the first conductive sheet 1 can be electrically connected with the resistance layer 7 through the conductive layer 6.

The fuse further comprises a plated member 8, the resistive layer 7 further comprises a fourth end 72 disposed opposite the third end 71, the plated member 8 is fixed to the outer surface of the housing 3, and the plated member 8 is electrically connected to the fourth end 72 of the resistive layer 7. The fuse further comprises an adapter piece 9, and the adapter piece 9 is fixedly connected to the electroplating piece 8. Specifically, the plated part 8 is formed on the outer surface of the outer shell 3 and connected to the resistor layer 7, and the plated part 8 is used for soldering and fixing the adaptor 9. The plated item 8 is a brazed plated item 8. The adaptor 9 is a metal sheet. The connection of the plated member 8 to the housing 3 may be by a ceramic to metal brazing technique. The connection of the adapter 9 to the plated part 8 can be made by metal-to-metal resistance welding or soldering.

The fuse comprises a conductor bundle 10, which conductor bundle 10 is fixed to the adapter 9. Specifically, the lead bundle 10 is fixed on the adaptor 9, the adaptor 9 is fixed on the plating 8, and the plating 8 is fixed on the outer surface of the outer shell 3 and electrically connected with the resistor layer 7. The current on the resistive layer 7 flows out through the plated member 8, the adapter member 9, and the lead bundle 10 in this order. Thus, the current on the first conductive sheet 1 partially flows out through the second conductive sheet 11 and partially flows out through the wire harness 10. The resistive layer 7, the plated part 8, the adapter 9 and the lead bundle 10 can shunt current on the fuse 5, thereby prolonging the service life of the fuse 5. The wire harness 10 is mainly used as a connection wire. The length and the shape of the lead bundle 10 are not limited, and the lead bundle 10 can be changed into a flexible circuit board, a hard copper bar and the like. It should be understood that the adaptor 9 is made of metal sheet only as an embodiment of the present invention, the present invention is not limited to the specific structure of the adaptor 9, and in other embodiments, the adaptor 9 may be made of metal clamping groove, buckle, etc. as long as the wire bundle 10 can be fixed on the electroplated component 8.

During installation, the resistance layer 7, the electroplated part 8 and the adapter part 9 are attached to the outer surface of the manufactured shell 3 through printing, baking, brazing and other processes, and the conducting and connecting layer 6 is installed on the accommodating surface; placing the fuse 5 in the accommodating space 12 of the housing 3, overlapping the second bending section 52 at the second end 32 of the housing 3, connecting the second conductive plate 11 with the second end 32 of the housing 3 through the fixing member 2, and connecting the second conductive plate 11 with the second bending section 52 of the fuse 5; filling the arc extinguishing member 4 in the accommodating space 12 of the shell 3, and curing and molding the arc extinguishing member 4; bending the first bending section 51 of the fuse 5, and making the first bending section 51 flush with the conductive connection layer 6, wherein the first conductive sheet 1 is connected with the first end 31 of the shell 3 through the fixing piece 2, and the first conductive sheet 1 compresses the first bending section 51; the wire bundle 10 is connected and fixed with the adaptor 9 by resistance welding or soldering.

The technical features of the above embodiments may be arbitrarily combined, and for the sake of brief description, all possible combinations of the technical features in the above embodiments are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a fuse, its characterized in that, includes shell, fuse and resistive layer, the shell includes accommodation space, the fuse is located in the accommodation space, the resistive layer set up in the surface of shell, the shell includes first end, the fuse with the resistive layer is in the first end of shell is connected.

2. The fuse of claim 1, further comprising an arc extinguishing member, wherein the fuse includes a first bending section, a second bending section disposed opposite to the first bending section, and a connecting section connecting the first bending section and the second bending section, the first bending section is adjacent to the first end, the first bending section, the connecting section, and the second bending section are connected to form a receiving cavity, and the arc extinguishing member is disposed in the receiving cavity.

3. The fuse of claim 2, further comprising a first conductive tab disposed on one side of the first end of the housing, the first conductive tab electrically connected to the first bend section of the fuse, the first conductive tab electrically connected to the resistive layer.

4. The fuse of claim 3, further comprising a conductive layer, wherein the resistive layer includes a third end facing the first conductive sheet, the first end of the housing is flush with the third end of the resistive layer, the first end of the housing and the third end of the resistive layer together form a receiving surface, the conductive layer is disposed between the first conductive sheet and the receiving surface, and the first conductive sheet and the resistive layer are electrically connected through the conductive layer.

5. The fuse of claim 2, further comprising a second conductive tab, wherein the housing further comprises a second end disposed opposite the first end, wherein the second conductive tab is disposed on a side of the second end of the housing, and wherein the second conductive tab is electrically connected to the second bend section of the fuse.

6. The fuse of claim 4, wherein the fuse further comprises a plating, the resistive layer further comprises a fourth end disposed opposite the third end, the plating is secured to an outer surface of the housing, and the plating is electrically connected to the fourth end of the resistive layer.

7. The fuse of claim 6, further comprising an adapter fixedly attached to the plating.

8. The fuse of claim 7, wherein the fuse includes a wire harness secured to the adapter.

9. The fuse as claimed in claim 1, wherein an outer surface of the resistive layer is provided with an insulating layer.

10. A distribution box, comprising the fuse of any of claims 1-9.

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