JP4484885B2 - Plug adapter - Google Patents

Description

  The present invention relates to a plug adapter. In particular, it refers to a plug adapter having plugs of different standards.

  Plug adapters are one of the indispensable when traveling abroad, which provides the most basic plug conversion for electrical products, so that electrical products can be made by forming electrical connections in sockets with two different standard plugs Can get electricity. For such products, the inventor has obtained a related patent and may sell the product to the market. In addition, the inventor has filed a plurality of patents related to this, and the application for the patent has been published, which will be briefly described below.

  Patent Document 1 has a structure in which sockets around the world are standardized and assembled quickly. In particular, if necessary, a socket with different plug holes in each country is fitted on a socket fixing base with one or more fitting holes, so that the sockets in each country can be quickly assembled and the connection of the power supply completed. It is what you point to. It is mainly provided with metal pins with screw holes or sealing holes for sealing at the bottom of the base of the socket, and each metal pin is connected to two conductive frames and ground guide frames in the base, respectively. Since each conductive unit with a screw can be quickly provided in the threaded portion, current can be introduced into the socket. Moreover, the above-mentioned socket can be quickly fitted and provided on one socket fixing base. The socket fixing base is composed of an upper case and a base having one or more fitting holes, and the base is provided at the bottom of the socket at a position facing the fitting hole on the upper case. A fastening terminal that is connected to and integrated with each other is provided, and the fastening terminal is provided by being fitted to edges of a plurality of fixed frames provided on the base. One safety partition plate is provided between the base and the upper case, and the safety partition plate is provided with a hole penetrating through the conductive unit provided at the bottom of the socket at a position opposite to each fastening terminal. So, if necessary, sockets with plug holes of different countries can be installed in all the fitting holes in the socket fixing base, and the conductive unit provided at the bottom of the socket penetrates the holes in the safety partition plate. Then, by assembling and integrating with the retaining terminal provided on the base, you can introduce the power supply into the socket and insert each type of power plug and use it on both sides of the socket A certain buckle allows the socket to be quickly fixed in each hole to be fitted in the socket fixing base. Furthermore, the safety purpose can be achieved because of the design of the safety partition plate, when the socket is not fitted, there is no direct contact with the retaining terminal with electricity.

  Patent Document 2 is a universal plug adapter that can quickly change the panel of the plug hole. In particular, by assembling a plug hole panel with a plug hole of a different standard of each country, if necessary, a panel with a universal plug hole in a socket or plug adapter, and quickly changing to a socket or plug adapter with the required plug hole Refers to what can be. It is mainly pre-installed with a plug hole to provide the insertion of plugs of different standards in the socket or plug adapter panel, and a flange frame with one appropriate height at the edge of the plug hole of the socket or plug adapter. As a result, an appropriate concave location is formed in the flange frame, and if necessary, a plug hole panel having various different types of plug holes can be assembled in the concave location. When assembling the plug hole panel in a concave place by providing one or more elastic buckles on the bottom surface of the plug hole panel, the socket or plug adapter panel is provided through the provided elastic buckle. By inserting it into one of the plug holes and fixing it, the plug hole panel can be quickly assembled into the concave place And positioning Te, state exhibiting plug hole of a single standard is formed. Also, if necessary, the plug hole panel can be removed at any time and changed to a plug hole panel with a plug hole of a different standard, so by achieving the purpose of quickly replacing a plug hole panel with a different plug hole, The purpose of quickly replacing the socket or plug adapter with the required plug hole can be achieved.

  Patent Document 3 is a simple plug adapter. In particular, it refers to the adapter body based on the German plug standard, which is integrally molded with the plug adapter panel. Furthermore, one universal type conductive frame is provided in each storage area formed on both sides of the interior, and a ground frame with one single plywood is provided in the central storage area, around one end of the plug adapter body At least one flange to be fixed is provided, and one fixed concave hole is provided at a position facing the edge of each insertion plate. When assembling the insertion plate, the plug adapter body After fixing the fixing flange on the edge of the insertion plate into the edge of the insertion plate and fixing the hole on one side of the concave hole, the fixing flange is on one side by rotating the insertion plate By entering the fixed concave hole, the insertion plate can be quickly integrated with the main body of the plug adapter or replaced. By providing one ground plate in each of the German type ground slots that are symmetrical on both sides of the plug adapter, and connecting one side edge of the two ground plates in contact with the ground frame. After inserting the main body of the plug adapter into the slot of the German socket, its ground plate can be brought into contact with the ground terminal. In addition, in order to insert the plug adapter into the French standard socket at the same time, the positioning position of the insertion plate is set to a position that shows a specific oblique angle with the insert hole of the panel. Therefore, when the insertion plate is assembled at a positioning position having an oblique angle, the inside of the insertion portion is maintained in contact with the portion where the conductive frame extends. Also, a grounding insertion hole is provided at a position where the insertion plate faces the grounding plate of the French socket, and the position of the grounding insertion hole is shifted to one side of the grounding insertion hole provided on the panel of the plug adapter. When the plug adapter is inserted into a French standard socket by providing a state to be transferred, the ground plate can be inserted from the ground insertion hole of the insertion plate, and the ground is connected to the plug adapter body. The effect of grounding is constituted by contacting the arc-shaped contact edge on the corresponding grounding plate. This design simplifies the structure, speeds up assembly and reduces costs. This plug adapter can be used as a general plug adapter, and can also be used with German and Franc standard sockets. As it is, it is a universal plug adapter design that is simpler in construction and more effective.

  The purpose of each of the above-mentioned patents is to design an electric product that can be used in accordance with local socket standards by changing the plug type when the user travels abroad. Each of the above-mentioned plug adapters is fully functional and can be changed immediately with a socket, but it has multiple functions, so its volume is relatively large, which puts a burden on the travel for the user. Become. The inventor of the present invention has many years of experience in this industry, so it is well understood that multi-function effects can be achieved even if the plug adapter is reduced. Furthermore, for the safety design of concave slots in Germany and France types, the current universal plug adapter is shared with other insertion terminals unless a corresponding plug is designed for the concave slot. It is clear that it cannot be done (the insertion terminal is too short). If the above-mentioned difficulties can be overcome, it will have a major impact on the industry, and travelers will expect such a product.

Taiwan Patent No. 430166 Specification Taiwan Patent No. 445671 Taiwan Patent No. 456634 Specification

  The main object of the present invention is to solve the above-mentioned drawbacks. The present invention relates to a plug adapter. By having two or more sets of insertion terminals in the present invention, a corresponding standard can be selected and inserted into a socket. By providing the two sets of insertion terminals relative to the plug adapter relative to each other, it is possible to reduce the occupied space for using the multi-set insertion terminals in a relatively open form, and in the state where they are used By inserting one set of insertion terminal sets upright, the socket can be inserted into a matching socket. In addition, by storing the insertion terminal in the plug adapter storage slot in the closed state, the space occupied by the entire plug adapter can be shortened, so that it is easy to carry when traveling.

  Another object of the present invention is to insert the two insertion terminals into a storage slot provided on the surface of the plug adapter in order to avoid damaging the human body or article with the insertion terminals. This is to avoid damage for the terminal.

  Another object of the present invention is to provide the plug adapter of the present invention with a concave shape by fitting a length-adjustable part on the insertion terminal so that the plug adapter has wider applicability. Inserting into a German or French socket with a slot does not cause the insertion terminal to be too short, so you can turn it on after inserting it.

According to the first aspect of the present invention, in the plug adapter, electrical connection is formed to a plug and a socket of different standards, the plug adapter is provided with an insertion surface for inserting the plug, and the plug conductive terminal is inserted into the insertion surface. A plurality of connection holes are provided, and a connection surface for inserting a single socket is provided.
Including a storage slot recessed in one connecting surface and two sets of first and second insertion terminals with different standards,
The first and second insertion terminal sets are pivoted on opposite ends of the storage slot, respectively, and are formed symmetrically facing each other.
The first and second insertion terminal set is inserted terminals and round insert pin European-type flat shapes of American, the round insert pin of the upper Symbol European, can be moved by sliding And, by positioning, an extension element forming a first fixing position and a second fixing position is fitted, and the extension element has an electrical connection relationship with the European round insertion terminal, the first and By placing the second insertion terminal set in the storage slot and rotating one of the insertion terminal sets in the state of use, the second insertion terminal set can be inserted into the corresponding socket .
The insertion terminals of the first and second insertion terminal sets are provided on one insulated terminal block and one insulated connecting rod, respectively, and pivot shafts and rotating shafts are provided on both sides of the terminal block and the insulated connecting rod, respectively. Thus , the plug adapter is provided so as to be pivoted to the guide rail and the rotation slot of the connection surface, respectively .
The invention of claim 2 is provided with a conductive element for inserting the plug conductive terminal in the plug adapter, the conductive element is provided with a contact end extending to two first and second insertion terminal sets, 2. The plug adapter according to claim 1, wherein when the plug adapter is used, one set of the two insertion terminal sets is in a state of electrical connection with the contact end.
According to a third aspect of the present invention , one end of the extending element is an open hole, the inside thereof is hollow, a single protrusion is provided at the same end, and the open hole is further fitted to the insertion terminal. After that, the terminal is covered with a single insulating layer, and the insulating layer is provided with a slide slot in which one projecting portion can be slid and moved, and the front end and the bottom end of the slide hole are respectively first. Since the second fixing hole is provided in a recessed manner, the protruding portion is fixed to the first or second fixing hole and positioned at the front end or the bottom end of the insertion terminal, thereby forming an electrical connection. The plug adapter according to claim 1 is provided .
According to a fourth aspect of the present invention, one screw portion is provided at each end of the extension element, the insertion terminal is hollow, and a hollow conductive element provided with the extension element is fixedly provided therein. The first fixed position and the second fixed position are formed by positioning with respect to each other because the threaded portion is also provided at a place where the inner wall of the conductive element is symmetrical with the extending element. The plug adapter is described.
According to a fifth aspect of the present invention, there is provided the plug adapter according to the first aspect, wherein a fuse for preventing one current from becoming excessive is provided on the connection surface, and the fuse can be replaced.

  Since the space occupied by the entire plug adapter can be shortened according to the present invention, there is an advantage that it is easy to carry when traveling. In order to avoid damaging the human body or article with the insertion terminal, the two insertion terminals are installed in the storage slot provided on the surface of the plug adapter to avoid damage due to the protruding insertion terminal. is there. In order to give the plug adapter wider applicability, the plug adapter of the present invention can be applied to a socket in Germany and France with a concave slot by fitting a length-adjustable part on the insertion terminal. The insertion terminal does not cause a phenomenon that is too short even if it is inserted, so the power can be turned on after insertion.

  Details of the present invention and technical contents will be described below with reference to the drawings. Please refer to Figs. 1 to 6 are an external perspective view of the present invention and an explanatory view of an embodiment. As shown in the figure, the present invention relates to a plug adapter 1. Using this, electrical connections are made to plugs and sockets of different standards, and the plug adapter 1 is provided with an insertion surface 50 for receiving the plug, and a connection hole 51 (FIG. 8) is formed on the insertion surface 50. There is a connection surface 10 on which the conductive terminals of the plug are inserted, and two sets of first and second insertion terminal sets 20 and 30 are provided. And the second insertion terminal set 20, 30 is inserted into the matching socket (not shown in the figure). A storage slot 11 for storing the first and second insertion terminal sets 20, 30 is provided on the connection surface 10, and the two first and second insertion terminal sets 20, 30 are connected to the storage slot 11. The two first and second insertion terminal sets 20 and 30 are closed and pivoted at the opposite ends, so that a shape that opens relative to each other is formed. The terminal can be selected and rotated to stand upright on the connection surface 10 (indicated on FIGS. 1 and 5 to select a different type of insertion terminal set) and can be inserted over the socket. When the plug adapter 1 is in a closed state, the first and second insertion terminal sets 20 and 30 are housed in the housing slot 11 and protrude from the surface of the connection surface 10 (see FIG. 13). Therefore, by providing an insertion terminal of a different standard on the plug adapter 1, it is possible to correspond to the matching socket.

  As described above, the first and second insertion terminal sets 20 and 30 in the plug adapter 1 are respectively shown as an example of an American-style flat insertion terminal and a European-style round insertion terminal, which is preferable in the present invention. The system utilizes the fact that the pitches of the two types of insertion terminals 21 and 31 are different. That is, since the pitch B of the American-style flat insertion terminal 21 is shorter and the pitch A of the European-style round insertion terminal is wider, the American-style flat insertion terminal 21 is replaced with the European-style round insertion terminal 21. By providing in the pitch A of the insertion terminal 31, both are opened relatively and it does not interfere with each other. Further, in the closed state, the two sets of first and second insertion terminal sets 20 and 30 are stored in the storage slot 11 and do not protrude out of the connection surface 10, so that the space occupied by the plug adapter 1 is reduced. It can be reduced and protrudes so that it does not damage the human body or article (as in FIG. 13) and in use, for example, as shown in FIG. 1 or FIG. By selecting the terminal set 20 or the second insertion terminal set 30 and inserting it into the matching socket, electricity from a socket of a different standard can be put into the plug. Further, the present invention is not limited to the use of the European insertion terminal 31. As shown in FIG. 6, the second insertion terminal set 30 'uses an English-style square insertion terminal 31'. C is wider than the pitch B of American insertion terminals. In place of the European insertion terminal 31, a British square insertion terminal 31 'may be used.

  Also, for safety and to accommodate plugs of different standards from country to country, many country sockets have ground end designs such as ground holes. For example, England. Therefore, one ground terminal 32 can be provided on the plug adapter 1 again. For example, as shown in FIG. 2, since the ground terminal 32 is pivotally provided at an appropriate position in the storage slot 11, it is stored in the storage slot 11 in a closed state. Does not protrude. Furthermore, in the state of use, it can be inserted into a matching ground hole in the socket by rotating it upright to the connection surface 10.

  Please refer to Figure 2. Since safety measures are also provided in the grounding hole of the British type socket, when the grounding terminal 32 is not inserted, the corresponding insertion terminal 31 cannot be inserted into the British socket to turn on the power. Since the present invention uses the installation of the ground terminal 32 as described above, even if the insertion terminal 31 of the plug adapter 1 is a European-type round insertion terminal 31, the ground terminal 32 can be The European-style round insertion terminal 31 can obtain electricity from a British socket. The grounding terminal 32 can be made of an insulating material or a conductive material, but does not limit that it must have a function of conductive grounding, so open the safety measures in the UK socket and insert the insertion terminal 31 into the socket. It is only necessary to insert electricity into the switch and turn on electricity.

  Please refer to Fig.7 and Fig.8. It is a structural decomposition explanatory view of the present invention. As shown in the figure, the plug adapter 1 is provided with conductive elements 40 for forming an electrical connection state between the two insertion terminals 21 and 31 and the conductive terminals of the socket. By providing the contact end 41 extending to the second insertion terminal set 20, 30, the insertion terminal set can be brought into contact with the contact end 41 in a state where the insertion terminals 21, 31 are used upright, and the plug And form an electrical connection state.

  As shown in FIG. 8, the first insertion terminal set 20 is positioned on an insulating terminal block 22 by a fixing element 23, and two pivot shafts 221 protrude from both sides of the terminal block 22, The guide rail 14 that rotates and displaces the pivot shaft 221 is provided with the inner end corresponding to the two pivot shafts 221. Therefore, when selecting a use state in which the first insertion terminal set 20 is upright, the pivot shaft 221 is selected. Forms an electrical connection through the conductive element 40 and the conductive terminal.

  By providing the second insertion terminal set 30 at one end in the plug adapter 1 and connecting it to the insulating connecting rod 301, an electrical connection side 303 connected to the contact end 41 is formed. Two rotary shafts 302 are provided on both sides, and one end of the connection surface 10 is attached to the rotary slot 13 provided corresponding to the two rotary shafts 302. Therefore, the rotary shaft 302 and the rotary slot 13 are used. By rotating the second insertion terminal set 30 and displacing the second insertion terminal set 30 upright, the second insertion terminal set 30 can be closed or used.

  Please refer to FIG. 9 and FIG. It is a partial structural explanatory view of the present invention and a cross-sectional explanatory view of the partial structure. As shown in the figure, when the second insertion terminal set 30 is a European-type round insertion terminal 31, one extension element 314 is fitted on the two insertion terminals 31. One end is hollow, one protrusion 315 is provided in the inside, and a single insulating layer 316 is covered on the insertion terminal 31. Further, the insulating layer 316 is provided with a slide slot 311 on which the protruding portion 315 can slide. By providing the first and first fixing holes 312 and 313 in a recessed manner at the front end and bottom end of the slide slot 311, when the protrusion 315 is moved to the front end or the rear end of the insertion terminal 31 by sliding, the protrusion 315 and the first fixing hole 312 are used to extend the extending element 314 to the front end or the bottom end to form the first fixing position or the second fixing position of the extending element 314, respectively. An electrical connection is formed between the two. The purpose of forming the extending element 314 in the first fixing position or the second fixing position is to adjust the length of the insertion terminal 31. For example, when the present invention is applied to a German / French socket (not shown in the figure), the socket is provided with a safety concave slot having a safety design, and the insertion hole is provided with a safety concave slot. By providing the plug adapter 1 of the present invention in correspondence with this socket by providing it on the bottom surface, the length of the insertion terminal 31 is adjusted according to the safety concave slot, so that there is a gap between the connection surface and the socket. By forming this, it is possible to cope with a case where the length of the insertion terminal 31 is required to be longer. The main feature of the design of the insertion terminal 31 of the present invention is that the second fixing position in the protruding portion 315 of the extending element 314 corresponds to the insertion hole of a general flat socket, and the protruding portion 315 is the first feature. By fixing and positioning in the two fixing holes 313, the second fixing position of the stretching element 314 is formed, so that the insertion terminal 31 is not loosened in the insertion hole of a general flat socket. Can be inserted into. Further, in order to correspond to the above-described German and French sockets, the present invention rotates the protruding portion 315 in the second fixing hole 313 to prevent the insertion terminal 31 from being too short. Then, the slide slot 311 is moved as a track to the front end of the insertion terminal 31 and moved into the first fixing hole 312 to be positioned in the first fixing hole 312. Thus, since the first fixed element of the extending element 314 is formed, the power supply can be obtained by inserting the insertion terminal 31 into the German or French socket with the extending element 314 that extends. Also, refer to FIGS. 14 and 15 for the implementation state of one insertion terminal 31 and the drawing element 34. One threaded portion 341, 342 is provided at each end of the extension element 34, and the insertion terminal 31 is hollow. A conductive element 33 that is hollow and fits the extension element 34 is fixedly provided therein, a terminal head 36 is provided at one end of the extension element 34, and an element 35 that is sealed at the other end is inserted into the hollow insertion terminal 31. Since the threaded portion 331 is also provided at the place where the inner wall of the conductive element 33 is opposed to the extending element 34, the extending element 34 can be slid and moved to the first fixed position and the second fixed position. it can. Furthermore, mutual positioning with the screw portion 331 is performed using the screw portions 341 and 342. Please refer to Fig. 5, Fig. 11 and Fig. 12 at the same time. It is an operation explanatory view of a part of the invention. There is one diagonal angle D in the insertion hole of the Australian style socket, and the size of the insertion hole can be matched with the American style flat shape insertion terminal. As shown in the figure, in order to increase the versatility of the plug adapter 1, the first insertion terminal set 20 is positioned on the terminal block 22 by the fixing element 23 using the fact that the first insertion terminal set 20 is in use. However, when the fixed element 23 is used as the pivot shaft 221, and the rotational displacement is performed, the terminal set 20 can be inserted corresponding to the oblique flat-shaped insertion terminal 21 of the Australian socket by the rotational displacement. . The connection surface 10 is provided with concave slots 12 and 222 corresponding to the terminal block 22 and the oblique angle D, respectively, so that the oblique flat insertion terminal 21 of the Australian type socket is accommodated and fixed.

  Please refer to FIG. 13 and FIG. It is an explanatory view of another embodiment of the present invention and a front view thereof. When the plug adapter 1 is in a closed state, the first and second insertion terminal sets 20 and 30 are all housed in the housing slot 11 and therefore do not protrude from the surface of the connection surface 10. It has the effect of reducing the amount of damage and does not damage humans and articles. Further, for safety in the case of using electricity, the fuse 60 (which may be omitted depending on actual necessity) is provided on the connection surface 10 to prevent the incineration of electricity due to excessive current. The application field of the present invention is very wide. For example, the plug adapter 1 is applied to a transformer 2 (see FIG. 17) or the plug adapter 1 is used as a portable charger 3 (mainly charging a portable battery 4). Or can be arranged in one charger 5 (mainly for charging the rechargeable battery 6; see FIG. 19). By the above, people traveling or doing business between countries can use electronic products in sockets in that country in accordance with the major country's socket standards.

It is an external solid explanatory drawing of this invention. It is an external solid explanatory drawing of this invention. It is an external solid explanatory drawing of this invention. It is an external solid explanatory drawing of this invention. It is explanatory drawing of another one Example of this invention. It is explanatory drawing of another Example of this invention. It is structural decomposition explanatory drawing of this invention. It is structural decomposition explanatory drawing of this invention. It is decomposition | disassembly explanatory drawing of the partial structure of this invention. It is sectional explanatory drawing of the partial structure of this invention. It is operation | movement explanatory drawing of the one part element of this invention. It is operation | movement explanatory drawing of the one part element of this invention. It is explanatory drawing of another Example of this invention. FIG. 6 is a structural diagram of another embodiment in which terminals are connected. It is sectional drawing of one Example which has connected the terminal again. It is a front view of a plug adapter. It is explanatory drawing which applies this invention to a transformer. It is explanatory drawing which applies this invention to a portable charger. It is explanatory drawing which applies this invention to a charger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plug adapter 2 Transformer 3 Portable charger 4 Portable battery 5 Charger 6 Rechargeable battery 10 Connection surface 11 Storage slot 12, 222 Recessed slot 13 Rotation slot 14 Guide rail 20, 30 Terminal set 22 Terminal block 23 Fixing element 21 , 31 Insertion terminal 30 ′ Insertion terminal set 31 ′ Insertion terminal 32 Grounding terminal 33 Conductive element 34, 314 Extension element 35 Sealing element 36 Terminal head 40 Conductive element 41 Contact end 50 Insertion surface 51 Connection hole 60 Fuse 221 Pivot shaft 301 Connecting rod 302 Rotating shaft 311 Slide slot 312, 313 Fixing hole 315 Protruding part 316 Insulating layer 331, 341, 342 Threaded part

Claims (5)

In the plug adapter, electrical connections are made to plugs and sockets of different standards, the plug adapter has an insertion surface for inserting the plug, and there are a plurality of connection holes for inserting the plug conductive terminals on the insertion surface. And a connecting surface for inserting one socket, the plug adapter is
Including a storage slot recessed in one connection surface and two sets of first and second insertion terminals with different standards,
The first and second insertion terminal sets are pivoted on opposite ends of the storage slot, respectively, and are formed symmetrically facing each other.
The first and second insertion terminal set is inserted terminals and round insert pin European-type flat shapes of American, the round insert pin of the upper Symbol European, it can be moved by sliding And, by positioning, an extension element that forms a first fixing position and a second fixing position is fitted, and the extension element has an electrical connection relationship with the European round insertion terminal, and The second insertion terminal set is placed in the storage slot, and in the state of use, by inserting one set of the insertion terminal sets upright, it can be inserted into the corresponding socket ,
The insertion terminals of the first and second insertion terminal sets are provided on one insulating terminal block and one insulating connecting rod, respectively, and pivot shafts and rotating shafts are provided on both sides of the terminal block and the insulating connecting rod, respectively. Thus , the plug adapter is provided so as to pivot on the guide rail and the rotation slot of the connection surface, respectively .   A conductive element for inserting the plug conductive terminal is provided in the plug adapter, the conductive element is provided with contact ends extending to two first and second insertion terminal sets, and the plug adapter is used. The plug adapter according to claim 1, wherein one of the two insertion terminal sets is electrically connected to the contact end. One end of the extending element is an open hole, the inside is hollow, and one projecting portion is provided at the same end. After the open hole is fitted to the insertion terminal, the terminal is further layered. The slide layer is provided with a slide slot that can move by sliding one protrusion into the insulation layer. The front and bottom ends of the slide hole are recessed in the first and second fixing holes, respectively. The projection is fixed to the first or second fixing hole and positioned at the front end or the bottom end of the insertion terminal to form an electrical connection. The plug adapter according to 1. One threaded portion is provided at each of both ends of the stretching element, the insertion terminal is hollow, a hollow conductive element provided with a stretching element is fixed therein, and an inner wall of the conductive element is provided. 2. The plug adapter according to claim 1, wherein a threaded portion is also provided at a position symmetrical with the extending element, and the first fixed position and the second fixed position are formed by positioning each other. The plug adapter according to claim 1, wherein a fuse for preventing one current from becoming excessive is provided on the connection surface, and the fuse can be replaced.

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