# US 12,763,527 B2 · Plug-in apparatus for a vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,527 B2 - Document ID: US12763527B2 - Status: Granted - Kind: B2 - Application number: 18/265,944 - Filed: 2021-10-20 - Published: 2024-02-01 - Granted: 2026-10-13 - Earliest claimed: 2020-12-21 - Assignees: Changchun Jetty Automotive Technology Co., Ltd. - Applicants: Changchun Jetty Automotive Technology Co., Ltd. - Inventors: Chao Wang - Web page: https://patentgrep.com/patent/US12763527B2 ## CPC - H01R 13/68: with built-in fuse - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract A plug-in apparatus; comprising a wire inlet connection portion and a wire outlet connection portion is disclosed, in which a fuse is connected between a first end of the wire inlet connection portion and a first end of the wire outlet connection portion, a second end of the wire inlet connection portion is connected to a power supply wire, a second end of the wire outlet connection portion is connected to a load wire, and the second end of the wire outlet connection portion having at least one connection branch, each of which serves as a load interface. The plug-in apparatus of achieves wire diameter reduction and current-shunting of the wire while protecting the wire, realizes capacity-increasing use, and performs design supplementation. The plug-in apparatus has the advantages of having a simple structure, convenient use and high safety. ## Claims ### Claim 1 A plug-in apparatus, comprising a wire inlet connection portion and a wire outlet connection portion, wherein: a fuse is connected between a first end of the wire inlet connection portion and a first end of the wire outlet connection portion, a second end of the wire inlet connection portion is connected to a power supply wire, and a second end of the wire outlet connection portion is connected to a load wire; the second end of the wire outlet connection portion has at least one connection branch which serves as a load interface; the plug-in apparatus further comprises at least one connection terminal, to which the second end of the wire inlet connection portion and/or the at least one connection branch is connected, and the connection terminal is connected to the power supply wire or the load wire; the plug-in apparatus further comprises a positioning plate, on which the at least one connection terminal is disposed to penetrate therethrough; the plug-in apparatus further comprises a plug-in portion provided with at least one plug-in through-hole penetrating from a first end to a second end thereof; one end of the connection terminal is connected to the second end of the wire inlet connection portion or the connection branch, the other end of the connection terminal extends into the plug-in through-hole from one end of the plug-in through-hole, and the other end of the plug-in through-hole is connected to the power supply wire or the load wire, wherein the plurality of connection terminals are plugged into the plurality of plug-in through-holes in a one-to-one correspondence, the load wire or the power supply wire extends into the plug-in through-hole, and the connection terminal crimps the load wire or the power supply wire in the plug-in through-hole to realize the connection between the connection terminal and the load wire or the power supply wire; and the plug-in apparatus further comprises a housing, in which the positioning plate, the wire inlet connection portion and the wire outlet connection portion are disposed, and the plug-in portion is detachably connected to the housing from one side of the housing, and a first end of the plug-in portion is located in the housing. ### Claim 2 (depends on 1) The plug-in apparatus according to claim 1, wherein: two ends of the connection terminal are located at two sides of the positioning plate, respectively; the wire inlet connection portion and the wire outlet connection portion are both located at a first side of the positioning plate, and one end of the connection terminal located at the first side of the positioning plate is connected to the wire inlet connection portion or the wire outlet connection portion; and the plug-in portion is located at a second side of the positioning plate, and one end of the connection terminal located at the second side of the positioning plate extends into the plug-in through-hole. ### Claim 3 (depends on 1) The plug-in apparatus according to claim 1, wherein: the connection terminal is laid flat on a side of the positioning plate from a first end to a second end thereof; the wire inlet connection portion and the wire outlet connection portion are close to the first end of the positioning plate, and one end of the connection terminal close to the first end of the positioning plate is connected to the wire inlet connection portion or the wire outlet connection portion; and the plug-in portion is close to the second end of the positioning plate, and one end of the connection terminal close to a second side of the positioning plate extends into the plug-in through-hole. ### Claim 4 (depends on 1) The plug-in apparatus according to claim 1, wherein the plug-in apparatus further comprises a plug-in board, on which a plurality of sockets are provided, and the plug-in board is connected to a top of the housing, and wherein the top of the housing has an opening for mounting the plug-in board, and the plug-in board is detachably connected into the opening, and the fuse is connected to the wire inlet connection portion and the wire outlet connection portion located inside the housing through the socket. ### Claim 5 (depends on 1) The plug-in apparatus according to claim 1, wherein an outer wall of the housing is provided with at least one positioning hanger. ### Claim 6 (depends on 1) The plug-in apparatus according to claim 1, wherein each of the first end of the wire inlet connection portion and the first end of the wire outlet connection portion is provided with a connector which is connected to the fuse. ### Claim 7 (depends on 1) The plug-in apparatus according to claim 1, wherein the wire inlet connection portion and the wire outlet connection portion are disposed in at least one pair, and the position between the wire inlet connection portions and the wire outlet connection portions of each pair is connected to the fuse. ### Claim 8 (depends on 1) The plug-in apparatus according to claim 1, wherein the fuse is one or more of a hot-melt fuse, a thermistor fuse, a positive temperature coefficient resistor fuse, a memory alloy fuse, a thermal trigger electronic fuse and a current trigger electronic fuse. ### Claim 9 (depends on 1) The plug-in apparatus according to claim 1, wherein a current carrying capacity of the power supply wire connected to the second end of the wire inlet connection portion is greater than or equal to that of the load wire connected to the second end of the wire outlet connection portion. ### Claim 10 (depends on 4) The plug-in apparatus according to claim 4, wherein the socket is connected to a cover, at least one sealing member sleeves on the cover, and the sealing member is located between the cover and the housing. ### Claim 11 (depends on 1) The plug-in apparatus according to claim 1, wherein the fuse is matched according to the load with the smallest rated current among the loads to be connected, the calculated minimum specification of the fuse is taken as the actually selected specification of the fuse, and the load wire with an appropriate wire diameter is matched based on the specification of the fuse. ### Claim 12 (depends on 4) The plug-in apparatus according to claim 4, wherein an extension direction of the connection branch and an extension direction of the second end of the wire inlet connection portion are parallel to the plug-in board, an extension direction of the first end of the wire inlet connection portions and an extension direction the first end of the wire outlet connection portion are perpendicular to the plug-in board. ### Claim 13 (depends on 4) The plug-in apparatus according to claim 4, wherein the housing is provided with a first accommodating cavity penetrating the one side of the housing along a first direction, and a second accommodating cavity penetrating the top of the housing along a second direction, the first direction is perpendicular to the second direction; and the plug-in portion is inserted into the first accommodating cavity, the positioning plate, the wire inlet connection portion and the wire outlet connection portion are all disposed in the second accommodating cavity of the housing, and the plug-in portion is arranged on the top of the housing. ### Claim 14 (depends on 13) The plug-in apparatus according to claim 13, wherein the connection terminal and the plug-in through-hole are arranged along the first direction, the first end of the wire inlet connection portion, the first end of the wire outlet connection portion, and the socket are arranged along the second direction.