A plug-in terminal structure inside a charging gun

Abstract

The present invention discloses a plug-in terminal structure inside a charging gun, which is arranged on the main housing of the charging gun. The plug-in terminal structure includes a charging interface, a PCB assembly module, a fixing member, a wiring terminal, and a plug-in member. The fixing member is connected to the charging interface, a plurality of the wiring terminals are inserted and arranged on the fixing member, a plurality of the plug-in members are arranged on the PCB assembly module, and the wiring terminals are inserted into the plug-in members to achieve electrical connection. The present invention realizes modular installation between the wiring terminal and the charging interface, realizes the pre-installation process, enhances the connection reliability, is convenient to install, and improves the installation efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging guns, and particularly relates to a plug-in terminal structure inside a charging gun. Background Art

[0002] At present, new energy vehicles have advantages such as low pollution, low energy consumption, and low noise, and are increasingly widely used in life. Charging connection products for new energy vehicles such as charging guns used in conjunction with them have also developed rapidly. For the charging gun products on the market currently, the connection process between the terminals inside the gun body and the cables is a crimping process or a welding process, resulting in a relatively high working hours required for production and low efficiency. Once there are problems in the crimping or welding process, the scrap rate of the terminals is relatively high, and they cannot be disassembled and reused repeatedly, and are relatively dependent on the process stability of the crimping or welding equipment. Summary of the Invention

[0003] The present invention is to avoid the deficiencies of the prior art and provides a plug-in terminal structure inside a modular charging gun.

[0004] The present invention solves the technical problems by adopting the following technical solutions: A plug-in terminal structure inside a charging gun is provided on the main housing of the charging gun. The plug-in terminal structure includes a charging interface, a PCB assembly module, a fixing member, a wiring terminal, and a plug-in member. The fixing member is connected to the charging interface. A plurality of the wiring terminals are inserted and arranged on the fixing member. A plurality of the plug-in members are arranged on the PCB assembly module. The wiring terminals are inserted into the plug-in members and electrically connected.

[0005] In one embodiment, the fixing member is provided with a limiting hole, a first limiting groove, a second limiting groove, and a third limiting groove. The limiting hole is arranged at the center of the fixing member and axially penetrates the fixing member. Two of the first limiting grooves are axially penetrated and arranged on the side curved surface of the fixing member. The two first limiting grooves are symmetrically arranged on the left and right sides of the limiting hole and are on the same straight line as the limiting hole. Two of the second limiting grooves are axially penetrated and arranged on the side curved surface of the fixing member. The two second limiting grooves are arranged above the limiting hole and between the two first limiting grooves. Two of the third limiting grooves are axially penetrated and arranged on the side curved surface of the fixing member. The two third limiting grooves are arranged below the limiting hole. The first limiting groove, the second limiting groove, and the third limiting groove are all used for placing the wiring terminals.

[0006] In one embodiment, the first limiting groove, the second limiting groove, and the third limiting groove are all in a "U" shape. A first limiting block is arranged along the inner surface of the first limiting groove. A second limiting block is arranged along the inner surface of the second limiting groove. A third limiting block is arranged along the inner surface of the third limiting groove. The first limiting block, the second limiting block, and the third limiting block are all in a "U" shape.

[0007] In one embodiment, the fixing member is connected to the charging interface by bolts. There are three connecting posts provided on the fixing member. The three connecting posts are distributed in a right triangle shape and the center of gravity coincides with the center of the fixing member. One end of the connecting post protrudes from the surface of the fixing member, and a guiding hole is provided inside the connecting post, and the bolt is inserted into the guiding hole.

[0008] In one embodiment, one of the connecting posts is arranged between two first limiting grooves, and the two connecting posts are respectively arranged between the second limiting groove and the third limiting groove on both sides.

[0009] In one embodiment, a plurality of end holes are provided through the charging interface. The end holes are matched with the wiring terminals. Three threaded holes are provided on one side of the charging interface connected to the fixing member, and the threaded holes correspond to the guiding holes.

[0010] In one embodiment, two first spare holes are provided on the fixing member, and the first spare holes are arranged on both sides of the connecting post at the top. Two second spare holes are provided on the charging interface, and the second spare holes are matched with the first spare holes.

[0011] In one embodiment, a plurality of insertion holes are provided on the PCB assembly module. The plug-in member is matched with the insertion holes and is electrically connected to the PCB assembly module. The plug-in member adopts a banana plug.

[0012] In one embodiment, at least two sealing rings are sleeved on the charging interface.

[0013] The present invention realizes the modular installation between the wiring terminal and the charging interface, realizes the pre-installation process, and improves the installation efficiency. By welding banana joints on the PCB assembly module, during installation, inserting the rubber joints into the corresponding wiring terminals can realize the pluggable installation structure, which can be disassembled and assembled repeatedly; reduces the terminal scrap rate, does not need to be directly crimped or welded to the cable, enhances the connection reliability, is convenient for installation, and improves the installation efficiency.

[0014] The present invention adopts a fixing member with a specific structure, which facilitates the arrangement of the wiring terminals and the connection between the fixing member and the charging interface. Through the arrangement at a specific position, when the wiring terminal is located on the fixing member, the overall center of gravity is stable, and the connection effect of the bolt is stable and not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are only for the purpose of illustrating the selected embodiments and do not represent all possible embodiments, and should not be considered as a limitation of the scope of the present invention.

[0016] Figure 1Schematically shows the plug-in terminal structure inside the charging gun according to an embodiment of the present invention in combination with the overall structure of the charging gun;

[0017] Figure 2 Schematically shows the overall structure of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention;

[0018] Figure 3 Schematically shows the exploded structure of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention;

[0019] Figure 4 Schematically shows the partial connection structure of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention, where the charging interface is not included;

[0020] Figure 5 Schematically shows the side view structure of the charging interface of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention;

[0021] Figure 6 Schematically shows the overall structure of the fixing member of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention.

[0022] Figure 7 Schematically shows the overall structure of the PCB assembly module of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention in combination with the plug-in connector.

[0023] Figure 8 Schematically shows the structure of the PCB assembly module of the plug-in terminal structure inside the charging gun according to an embodiment of the present invention. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0026] The terms used in this document are intended to explain the embodiments and are not intended to limit and / or define the present invention. It should be understood that the orientation or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is customarily placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0027] Next, with reference to Figures 1 to 8 , the preferred embodiments according to the present invention will be described in detail.

[0028] Figure 1 This is an overall schematic diagram of the plug-in terminal structure inside this charging gun in combination with the charging gun.

[0029] Figure 2 This is an overall three-dimensional state schematic diagram of the plug-in terminal structure inside this charging gun.

[0030] Figure 3 This is an exploded state schematic diagram of the plug-in terminal structure inside this charging gun.

[0031] Figure 4 This is a partial connection state schematic diagram of the plug-in terminal structure inside this charging gun, excluding the charging interface.

[0032] Figure 5 This is a side plane state schematic diagram of the charging interface of the plug-in terminal structure inside this charging gun.

[0033] Figure 6 This is a three-dimensional state schematic diagram of the fixing member of the plug-in terminal structure inside this charging gun.

[0034] Figure 7 This is an installation state schematic diagram of the PCB assembly module of the plug-in terminal structure inside this charging gun in combination with the plug-in connector.

[0035] Figure 8 This is a three-dimensional state schematic diagram of the PCB assembly module of the plug-in terminal structure inside this charging gun. Embodiment 1

[0036] The plug-in terminal structure inside the charging gun according to an embodiment of the present invention is arranged on the main housing 1000 of the charging gun and is electrically connected to the three-pronged cable 10. The plug-in terminal structure includes a charging interface 100, a PCB assembly module 200, a fixing member 300, a wiring terminal 400, and a plug-in member 500. The fixing member 300 is connected to the charging interface 100. Five or seven of the wiring terminals 400 are inserted and arranged on the fixing member 300, and correspondingly, five or seven of the plug-in members 500 are arranged on the PCB assembly module 200. The wiring terminal 400 is inserted into the plug-in member 500 and realizes electrical connection.

[0037] In this embodiment, the fixing member is generally cylindrical, and a limiting hole 310, a first limiting groove 320, a second limiting groove 330, and a third limiting groove 340 are arranged on the fixing member 300. The limiting hole 310 is arranged at the center of the fixing member 300 and axially penetrates the fixing member 300. Two of the first limiting grooves 320 are axially penetrated and arranged on the side curved surface of the fixing member 300. The two first limiting grooves 320 are symmetrically arranged on the left and right sides of the limiting hole 310 and are located on the same straight line as the limiting hole 310.

[0038] Among them, two of the second limiting grooves 330 are axially penetrated and arranged on the side curved surface of the fixing member 300. The two second limiting grooves 330 are arranged above the limiting hole 310 and are located between the two first limiting grooves 320.

[0039] Among them, two of the third limiting grooves 340 are axially penetrated and arranged on the side curved surface of the fixing member 300. The two third limiting grooves 340 are arranged below the limiting hole 310. The first limiting groove 320, the second limiting groove 330, and the third limiting groove 340 are all used to place the wiring terminal 400.

[0040] Among them, the first limiting groove 320, the second limiting groove 330, and the third limiting groove 340 are all in a "U" shape. A first limiting block 321 is arranged along the inner surface of the first limiting groove 320. A second limiting block 331 is arranged along the inner surface of the second limiting groove 330. A third limiting block 341 is arranged along the inner surface of the third limiting groove 340. The first limiting block 321, the second limiting block 331, and the third limiting block 341 are all in a "U" shape. The wiring terminal 400 is correspondingly inserted into the first limiting groove 320 and the second limiting groove 330. Since there is a clamping portion on the wiring terminal, the clamping portion is corresponded to the corresponding limiting block and clamped on both sides of the first limiting block 321 and the second limiting block 331 to achieve a preliminary fixing effect.

[0041] In this embodiment, the fixing member 300 is connected to the charging interface 100 by bolts 600. Three connecting posts 610 are provided on the fixing member 300. The three connecting posts 610 are distributed in a right triangle shape and the center of gravity coincides with the center of the fixing member 300. One end of the connecting post 610 protrudes from the surface of the fixing member 300. A guiding hole 611 is provided in the connecting post 610, and the bolt 600 is inserted into the guiding hole 611.

[0042] Moreover, one of the connecting posts 610 is arranged between two first limiting grooves 320, and the two connecting posts 610 are respectively arranged between the second limiting grooves 330 and the third limiting grooves 340 on both sides.

[0043] In this embodiment, seven terminal holes 401 are provided through the charging interface 100, and are arranged in three rows from top to bottom in the numbers of two, three, and two respectively, just corresponding to the limiting holes, the first limiting grooves, the second limiting grooves, and the third limiting grooves. The terminal holes 401 cooperate with the terminal blocks 400. Three threaded holes 601 are provided on one side of the charging interface 100 where it is connected to the fixing member 300, and the threaded holes 601 correspond to the guiding holes 611.

[0044] The number of terminal blocks can be five, corresponding to the first limiting grooves, the second limiting grooves, and the limiting holes respectively. When seven terminal blocks are needed, they can be assembled in the corresponding third limiting grooves and the corresponding plug-in parts can be added at the same time to achieve this.

[0045] In this embodiment, two first spare holes 301 are provided on the fixing member 300. The first spare holes 301 are arranged on both sides of the connecting post 610 at the top, between the first limiting groove and the second limiting groove on the same side. Two second spare holes 101 are provided on the charging interface 100. The second spare holes 101 cooperate with the first spare holes 301. By means of the first spare holes and the second spare holes, bolts 600 can be added, increasing from three to five, further improving the connection strength.

[0046] In this embodiment, seven plug-in holes 201 are provided on the PCB assembly module 200. The plug-in parts 500 cooperate with the plug-in holes 201 and are electrically connected to the PCB assembly module 200. The plug-in parts 500 adopt banana plugs, and the tails of the plug-in parts are inserted into the plug-in holes and fixed by welding.

[0047] At the same time, at least two sealing rings 110 are sleeved on the charging interface 100 to improve the connection sealing performance between it and the main housing of the charging gun.

[0048] During the assembly of the present invention, first select the structure with five wiring terminals or seven wiring terminals according to requirements. Taking the five-wiring-terminal structure as an example, insert two thinner wiring terminals into the first limiting groove for fixation, and then insert three thicker wiring terminals into the second limiting groove and the limiting holes for fixation. Then connect the fixing part to the charging interface through bolts, and insert the banana plug in the PCB assembly module into the wiring terminals, thus realizing the overall pluggable connection.

[0049] It should be noted that in the present invention, the connection methods not described between components can all adopt the commonly used connection methods in the field.

[0050] The scope of the present invention is not limited by the described embodiments, but is limited by the appended claims and their equivalents.

Claims

1. A pluggable terminal structure inside a charging gun, which is arranged on the main housing of the charging gun, and is characterized in that, The pluggable terminal structure includes a charging interface, a PCB assembly module, a fixing member, a wiring terminal, and a plug-in member. The fixing member is connected to the charging interface. A plurality of the wiring terminals are inserted and arranged on the fixing member. A plurality of the plug-in members are arranged on the PCB assembly module. The wiring terminal is inserted into the plug-in member to achieve electrical connection; The fixing member is provided with a limiting hole, a first limiting groove, a second limiting groove, and a third limiting groove. The limiting hole is arranged at the center of the fixing member and axially penetrates the fixing member. Two of the first limiting grooves are axially penetrated and arranged on the side curved surface of the fixing member. The two first limiting grooves are symmetrically arranged on the left and right sides of the limiting hole and are on the same straight line as the limiting hole. Two of the second limiting grooves are axially penetrated and arranged on the side curved surface of the fixing member. The two second limiting grooves are arranged above the limiting hole and between the two first limiting grooves. Two of the third limiting grooves are axially penetrated and arranged on the side curved surface of the fixing member. The two third limiting grooves are arranged below the limiting hole. The first limiting groove, the second limiting groove, and the third limiting groove are used for placing the wiring terminals; The first limiting groove, the second limiting groove, and the third limiting groove are all in a "U" shape. A first limiting block is arranged along the inner surface of the first limiting groove. A second limiting block is arranged along the inner surface of the second limiting groove. A third limiting block is arranged along the inner surface of the third limiting groove. The first limiting block, the second limiting block, and the third limiting block are all in a "U" shape; At least two sealing rings are sleeved on the charging interface.

2. The pluggable terminal structure inside a charging gun according to claim 1, characterized in that, The fixing member and the charging interface are connected by bolts. The fixing member is provided with three connecting columns. The three connecting columns are distributed in a right triangle shape and the center of gravity coincides with the center of the fixing member. One end of the connecting column protrudes from the surface of the fixing member. A guiding hole is arranged in the connecting column. The bolt is inserted into the guiding hole.

3. The pluggable terminal structure inside a charging gun according to claim 2, characterized in that, One of the connecting columns is arranged between the two first limiting grooves. The two connecting columns are respectively arranged between the second limiting groove and the third limiting groove on both sides.

4. The plug-in and unplugging terminal structure inside a charging gun according to claim 2, characterized in that, A plurality of end holes are axially penetrated on the charging interface. The end holes are matched with the wiring terminals. Three threaded holes are arranged on one side of the charging interface connected to the fixing member. The threaded holes correspond to the guiding holes.

5. The plug-in type terminal structure inside a charging gun according to claim 3, characterized in that, Two first spare holes are arranged on the fixing member. The first spare holes are arranged on both sides of the connecting column at the top. Two second spare holes are arranged on the charging interface. The second spare holes are matched with the first spare holes.

6. A pluggable terminal structure inside a charging gun according to claim 4, characterized in that, A plurality of plug holes are arranged on the PCB assembly module. The plug-in member is matched with the plug hole and is electrically connected to the PCB assembly module. The plug-in member uses a banana plug.

Images