New energy automobile charging pile fuse

Abstract

The utility model belongs to the technical field of electronic components, and particularly relates to a new energy automobile charging pile fuse which comprises an insulating base, a base contact terminal, a contact knife and a shell. The base contact terminal comprises a conductive contact terminal and a conductive elastic sheet. The number of the conductive elastic sheets is two, an elastic clamping groove is formed between the two conductive elastic sheets, the depth of the elastic clamping groove is smaller than the thickness of the contact knife, and the contact knife is arranged in the elastic clamping groove and is in compression joint contact with the two conductive elastic sheets. One end of the conductive contact terminal extending out of the insulating base is provided with a mounting hole. According to the new energy automobile charging pile fuse provided by the invention, the conductive contact terminal is arranged outside the shell, and the end, extending out of the insulating base, of the conductive contact terminal is provided with the mounting hole, so that when the fuse is damaged or needs to be replaced, a fuse mounting screw does not need to be disassembled, the fuse is directly pulled out, and a brand new fuse is inserted; repeated dismounting and mounting of fuse bolts are reduced, so that the fuse is replaced more conveniently and quickly, and the later maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic components, and particularly relates to a fuse for a new energy vehicle charging pile. Background Art

[0002] A fuse is an overcurrent protector. The fuse mainly consists of a housing, terminals, a fuse element, and additional fillers. When in use, the fuse is connected in series to the protected circuit. When the current in the protected circuit exceeds the specified value and after a certain period of time, due to overcurrent heating (the current thermal effect), the accumulation of heat inside the fuse causes the internal fuse element to reach the melting point of the metal material, and then the fuse element melts, disconnecting the circuit, thereby playing a protective role. It has an inverse time-delay characteristic. When the overload current is small, the fusing time is long; when the overload current is large, the fusing time is short. Therefore, within a certain range of overload current until the current returns to normal, the fuse will not blow and can continue to be used. The fuse mainly consists of a housing and a fuse tube, and the fuse tube is the key component controlling the fusing characteristics.

[0003] When the existing fuse is damaged or needs to be replaced, it is necessary to disassemble the housing of the fuse and connect the wire to the conductor inside the housing, resulting in inconvenient wire connection. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fuse for a new energy vehicle charging pile, aiming to solve the technical problem that when the existing fuse is damaged or needs to be replaced, it is necessary to disassemble the housing of the fuse and connect the wire to the conductor inside the housing, resulting in inconvenient wire connection.

[0005] To achieve the above purpose, the fuse for a new energy vehicle charging pile provided by the embodiment of the utility model includes an insulating base, a base contact terminal, a contact blade, and a housing. The base contact terminal is connected to the top side of the insulating base. One end of the contact blade is connected to the side of the housing, and the other end extends out of the housing and is elastically pressed against the base contact terminal.

[0006] The base contact terminal includes a conductive contact terminal and a conductive elastic sheet. One end of the conductive contact terminal is connected to the conductive elastic sheet, and the other end extends out of the insulating base. There are two conductive elastic sheets, which are arranged parallel and opposite to each other. An elastic clamping groove is formed between the two conductive elastic sheets. The depth of the elastic clamping groove is less than the thickness of the contact blade. The contact blade is arranged in the elastic clamping groove and is respectively in pressure contact with the two conductive elastic sheets. One end of the conductive contact terminal extending out of the insulating base is provided with a mounting hole.

[0007] As an alternative solution of the present utility model, the insulating base is made of insulating material. The insulating base includes a base body and heat insulating strips. The heat insulating strips are arranged between the base body and the conductive contact terminals and are fixedly connected to the base body and the conductive contact terminals respectively. A plurality of heat insulating strips are provided and are evenly arranged at the end of the base body.

[0008] As an alternative solution of the present utility model, positioning holes are provided on the base body. Two positioning holes are provided and both penetrate through the base body.

[0009] As an alternative solution of the present utility model, two base contact terminals are provided. The two base contact terminals are arranged parallel and opposite to each other and are both fixedly connected to the insulating base.

[0010] As an alternative solution of the present utility model, the number of the contact blades is the same as that of the base contact terminals. Two contact blades are provided. The material of the contact blades is copper-zinc alloy.

[0011] As an alternative solution of the present utility model, the contact blade includes a contact blade body and a contact blade guide head. One end of the contact blade guide head is fixedly connected to the contact blade body, and the other end is arranged in a V shape.

[0012] As an alternative solution of the present utility model, an introduction groove is formed at the tops of the two conductive elastic pieces. The introduction groove is in a horn shape and the width gradually becomes larger from bottom to top. The width of the bottom end of the introduction groove is the same as that of the elastic card slot and is connected to the elastic card slot.

[0013] One or more of the above technical solutions in the fuse of the new energy vehicle charging pile provided by the embodiment of the present utility model at least have one of the following technical effects:

[0014] The fuse of the new energy vehicle charging pile provided by the present application includes an insulating base, base contact terminals, contact blades and a housing. The base contact terminals include conductive contact terminals and conductive elastic pieces. The conductive contact terminals are arranged outside the housing. An installation hole is provided at one end of the conductive contact terminal extending out of the insulating base. When the fuse is damaged or needs to be replaced, there is no need to disassemble the fuse installation screws (traditional installation method: disassemble the bolts at both ends of the fuse, reinstall the bolts after replacing the fuse). The fuse can be directly pulled out and a new fuse can be inserted, reducing the repeated disassembly and installation of the fuse bolts. The wire can be directly connected to the installation hole of the conductive contact terminal, so that the wire connection is more convenient and the fuse can be replaced more quickly, reducing the later maintenance cost. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional view of the fuse for a new energy vehicle charging pile provided by an embodiment of the present utility model.

[0017] Figure 2 It is a three-dimensional view of the base contact terminal of the fuse for a new energy vehicle charging pile provided by an embodiment of the present utility model.

[0018] Figure 3 It is a side view of the base contact terminal of the fuse for a new energy vehicle charging pile provided by an embodiment of the present utility model.

[0019] Figure 4 It is a three-dimensional view of the contact blade of the fuse for a new energy vehicle charging pile provided by an embodiment of the present utility model.

[0020] Figure 5 It is a three-dimensional view of the insulating base of the fuse for a new energy vehicle charging pile provided by an embodiment of the present utility model.

[0021] Among them, the reference numerals in the figures are as follows:

[0022] 1. Insulating base; 2. Base contact terminal; 3. Contact blade; 4. Housing;

[0023] 11. Base body; 12. Heat insulation strip; 13. Positioning hole;

[0024] 21. Conductive contact terminal; 22. Conductive elastic sheet; 23. Elastic clamping groove; 24. Mounting hole; 25. Introduction groove;

[0025] 31. Contact blade body; 32. Contact blade guide head. Detailed implementation manners

[0026] The following will describe the embodiments of the present utility model in detail. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation of the present utility model.

[0027] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0030] In one embodiment of the present utility model, as Figures 1 to 5 shown, a fuse for a new energy vehicle charging pile is provided, which includes an insulating base 1, a base contact terminal 2, a contact blade 3, and a housing 4. The base contact terminal 2 is fixedly connected to the top side of the insulating base 1. One end of the contact blade 3 is fixedly connected to the side of the housing 4, and the other end extends out of the housing 4 and is elastically pressed against the base contact terminal 2.

[0031] The base contact terminal 2 includes a conductive contact terminal 21 and a conductive spring 22. One end of the conductive contact terminal 21 is fixedly connected to the conductive spring 22, and the other end extends out of the insulating base 1. Two conductive springs 22 are provided, and are arranged in parallel and opposite to each other. An elastic card slot 23 is formed between the two conductive springs 22, and the depth of the elastic card slot 23 is less than the thickness of the contact blade 3, so as to ensure that the contact blade 3 can be clamped in the elastic card slot 23. The contact blade 3 is arranged in the elastic card slot 23, and is respectively crimped and contacted with the two conductive springs 22. One end of the conductive contact terminal 21 extending out of the insulating base 1 is provided with a mounting hole 24, and the mounting hole 24 is connected to the wire. During use, when the wire is short-circuited or the wire temperature rises significantly due to excessive power, the wire will transfer heat to the conductive contact terminal 21 and the conductive spring 22, and then the conductive spring 22 transfers heat to the contact blade 3. When the temperature reaches the melting point of the contact blade 3, the contact blade 3 will gradually melt until it is no longer in contact with the conductive spring 22. At this time, the wire and the contact blade 3 remain disconnected, thereby disconnecting the circuit to avoid burning the wire due to excessive temperature, thereby improving safety. The new energy vehicle charging pile fuse provided by the present application has a conductive contact terminal 21 arranged outside the housing 4, and an end of the conductive contact terminal 21 extending out of the insulating base 1 is provided with a mounting hole 24. When the fuse is damaged or needs to be replaced, there is no need to remove the fuse mounting screws (traditional installation method: remove the bolts at both ends of the fuse, and reinstall the bolts after replacing the fuse). The fuse can be directly pulled out and a new fuse can be inserted, reducing repeated removal and installation of the fuse bolts. The wire is directly connected to the mounting hole 24 of the conductive contact terminal 21, so that the wire wiring is more convenient, the fuse can be replaced quickly, and the later maintenance cost can be reduced.

[0032] In another embodiment of the utility model, the insulating base 1 of the new energy vehicle charging pile fuse is made of insulating material, and can be made of high temperature resistant insulating material, such as ABS plastic, PC plastic, etc. The insulating base 1 includes a base body 11 and a thermal insulation strip 12. The thermal insulation strip 12 is arranged between the base body 11 and the conductive contact terminal 21, and is fixedly connected to the base body 11 and the conductive contact terminal 21 respectively. There are multiple thermal insulation strips 12, and they are evenly arranged at the end of the base body 11. The thermal insulation strip 12 separates the base body 11 from the bottom surface of the conductive contact terminal 21, and has a heat insulation effect.

[0033] In another embodiment of the utility model, the base body 11 of the new energy vehicle charging pile fuse is provided with a positioning hole 13, and two positioning holes 13 are provided and both penetrate the base body 11. The positioning holes 13 are used to fix the base body 11.

[0034] In another embodiment of the utility model, the new energy vehicle charging pile fuse has two base contact terminals 2 , which are arranged in parallel and opposite to each other and are both fixedly connected to the insulating base 1 .

[0035] In another embodiment of the utility model, the number of contact blades 3 of the new energy vehicle charging pile fuse is the same as the number of base contact terminals 2, and two contact blades 3 are provided, and the material of the contact blades 3 is copper-zinc alloy. The copper-zinc alloy is used not only because of its excellent electrical conductivity and thermal conductivity, but also because it can quickly fuse when the current is too large or the temperature is too high, thereby cutting off the current and protecting other components in the circuit from damage.

[0036] In another embodiment of the utility model, the contact blade 3 of the new energy vehicle charging pile fuse includes a contact blade body 31 and a contact blade guide head 32. One end of the contact blade guide head 32 is fixedly connected to the contact blade body 31, and the other end is arranged in a V shape. The contact blade 3 is inserted into the introduction groove 25 and the elastic card groove 23 in sequence through the contact blade guide head 32.

[0037] In another embodiment of the utility model, the top of the two conductive spring pieces 22 of the new energy vehicle charging pile fuse forms an introduction groove 25, which is horn-shaped and gradually increases in width from bottom to top, and the bottom of the introduction groove 25 is the same width as the elastic card slot 23 and is connected to the elastic card slot 23. The introduction groove 25 facilitates the insertion of the contact knife 3, and the contact knife 3 is sequentially plugged into the introduction groove 25 and the elastic card slot 23 through the contact knife guide head 32.

[0038] The new energy vehicle charging pile fuse provided in the present application has a conductive contact terminal 21 arranged outside the shell 4, and one end of the conductive contact terminal 21 extending from the insulating base 1 is provided with a mounting hole 24. When the fuse is damaged or needs to be replaced, there is no need to remove the fuse mounting screws (traditional installation method: remove the bolts at both ends of the fuse, and reinstall the bolts after replacing the fuse). The fuse can be directly pulled out and a new fuse can be inserted to reduce repeated disassembly and installation of the fuse bolts. The wire can be directly connected to the mounting hole 24 of the conductive contact terminal 21, so that the wire wiring is more convenient and quick, and the fuse can be replaced to reduce the later maintenance cost.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuse for a new energy vehicle charging pile, characterized in that, It includes an insulating base, a base contact terminal, a contact blade and a housing. The base contact terminal is connected to the top side of the insulating base. One end of the contact blade is connected to the side of the housing, and the other end extends out of the housing and is elastically pressed against the base contact terminal. The base contact terminal includes a conductive contact terminal and a conductive elastic piece. One end of the conductive contact terminal is connected to the conductive elastic piece, and the other end extends out of the insulating base. There are two conductive elastic pieces which are arranged parallel and opposite to each other. An elastic clamping groove is formed between the two conductive elastic pieces. The depth of the elastic clamping groove is less than the thickness of the contact blade. The contact blade is arranged in the elastic clamping groove and is respectively pressed against and contacted with the two conductive elastic pieces. An installation hole is provided at one end of the conductive contact terminal that extends out of the insulating base.

2. The fuse of a new energy vehicle charging pile according to claim 1, characterized in that, The insulating base is made of insulating material. The insulating base includes a base body and a heat insulation strip. The heat insulation strip is arranged between the base body and the conductive contact terminal and is fixedly connected to the base body and the conductive contact terminal respectively. There are multiple heat insulation strips which are evenly arranged at the end of the base body.

3. The fuse of a new energy vehicle charging pile according to claim 2, characterized in that, There are two positioning holes provided on the base body, and both of them penetrate through the base body.

4. A fuse for a new energy vehicle charging pile according to claim 1, characterized in that, There are two base contact terminals, and the two base contact terminals are arranged parallel and opposite to each other and are both fixedly connected to the insulating base.

5. A fuse for a new energy vehicle charging pile according to claim 4, characterized in that, The number of the contact blades is the same as that of the base contact terminals. There are two contact blades, and the material of the contact blades is copper-zinc alloy.

6. A fuse for a new energy vehicle charging pile according to claim 1, characterized in that, The contact blade includes a contact blade body and a contact blade guide head. One end of the contact blade guide head is fixedly connected to the contact blade body, and the other end is arranged in a V shape.

7. The fuse of a new energy vehicle charging pile according to claim 1, characterized in that, An introduction groove is formed at the top of the two conductive elastic pieces. The introduction groove is in a trumpet shape and the width gradually becomes larger from bottom to top. The width of the bottom end of the introduction groove is the same as that of the elastic clamping groove and is connected to the elastic clamping groove.

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