Charging socket convenient to assemble

Abstract

The utility model relates to the technical field of automobile charging connectors, in particular to a charging socket capable of being conveniently assembled, and solves the problem that a terminal of a charging socket in the prior art cannot be conveniently assembled. Which comprises a main shell connected with a PCB (printed circuit board), and is characterized in that the PCB is provided with signal elastic contacts, the main shell is provided with signal terminals, the end parts of the signal terminals are in contact with the signal elastic contacts, and the end parts of the signal terminals are provided with protective structures matched with the signal elastic contacts. The beneficial effects are that when the signal terminal is connected with the signal elastic contact, the signal terminal contact surface presses the signal elastic contact to realize connection, and the protection groove completely wraps the signal elastic contact to play a role in protecting the signal elastic contact. In the assembling process of the charging socket, the metal terminal and the PCB are in contact connection in a radial compression mode, signal transmission between the metal terminal and the PCB is achieved, the requirement for the installation precision of the metal terminal is low, and the assembling efficiency of the charging socket can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile charging connectors, and in particular to a charging socket that can be easily assembled. Background Art

[0002] The charging port of new energy vehicles or electric vehicles is a charging interface equipped with charging devices such as charging guns. Since the charging port of electric vehicles is designed to achieve fast charging speeds, it has higher technical requirements. The charging socket is a key component of electric vehicles. It is a multi-hole connector. The metal terminals in each hole must be reliably fixed to the plastic shell, and the plastic shell is locked to the flange by bolts. And each hole needs to be wired to the outside of the socket to realize the current transmission function. The 1 kilo-ohm resistor connection between the metal terminal and the CC1 terminal is prone to disconnection when the charging socket is assembled, resulting in complex socket assembly and low production efficiency of the charging harness.

[0003] The patent with the announcement number CN210074317U discloses a plug-in connector for plug-in connection with a corresponding mating plug-in connector, comprising a housing, a plug-in surface formed on the housing, and a circuit board, wherein the plug-in connector can be plug-in connected with the mating plug-in connector through the plug-in surface and a plurality of contact elements for electrical connection with the mating plug-in connector are arranged on the plug-in surface, and at least one electrical or electronic functional component is arranged on the circuit board. The circuit board has a first opening, and a first contact element among the plurality of contact elements extends through the first opening, wherein the circuit board has at least one first contact elasticity for thermal contact and / or electrical contact with the first contact element and at least one second contact elasticity for thermal contact and / or electrical contact with the second contact element among the plurality of contact elements. The at least one second contact elasticity electrically connects the second contact element to the circuit board, wherein the circuit board has a resistor for providing resistance coding. Although the above-mentioned plug-in connector uses a circuit board to replace the connection between the second contact element and the resistor, which reduces the difficulty of assembly, when the plug-in connector is actually assembled, the signal terminal is easily misaligned when connected to the elastic contact on the circuit board, and the elastic contact on the circuit board is easily damaged. Summary of the invention

[0004] The present invention provides a charging socket that can be easily assembled, which solves the problem in the prior art that the terminals of the charging socket cannot be easily assembled.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A conveniently assembled charging socket includes a main housing, a PCB board connected to the main housing, a signal elastic contact provided on the PCB board, a signal terminal provided on the main housing, an end of the signal terminal in contact with the signal elastic contact, and a protective structure matched with the signal elastic contact provided at the end of the signal terminal. The end face of the signal terminal contacts the signal elastic contact in an axial compression manner, thereby realizing signal transmission, and the protective structure provides protection for the signal elastic contact.

[0007] The protection structure includes a signal terminal protection groove arranged at the end of the signal terminal, a signal terminal contact surface is arranged at the bottom of the signal terminal protection groove, and a signal elastic contact is located in the signal terminal protection groove, and the signal elastic contact contacts the signal terminal contact surface. When the signal terminal is connected to the signal elastic contact, the signal terminal contact surface presses down the signal elastic contact to achieve the connection, and the protection groove completely wraps the signal elastic contact, thereby protecting the signal elastic contact.

[0008] The main housing is plugged with a metal terminal, which passes through a PCB board. The PCB board is provided with an elastic terminal, which is in radial contact with the metal terminal. During the assembly of the charging socket, since the metal terminal is in radial contact with the elastic terminal, the metal terminal can be connected to the elastic terminal by passing through the PCB board. The installation accuracy of the metal terminal is low, which is convenient for workers to assemble quickly and is conducive to improving the assembly efficiency of the charging socket.

[0009] The metal terminal includes a grounding terminal, and the elastic terminal includes a grounding elastic terminal, and the grounding terminal is pressed and connected with the grounding elastic terminal. A shaft shoulder is provided on the grounding terminal, and the grounding elastic terminal contacts the shaft shoulder. The shaft shoulder increases the diameter size of the grounding terminal, so that the gap between the grounding elastic terminal and the shaft shoulder is smaller, and the grounding elastic terminal is more likely to contact the shaft shoulder, thereby ensuring the stability of the connection between the grounding elastic terminal and the grounding terminal.

[0010] The PCB board is provided with a resistor, and the grounding elastic terminal is connected to the resistor through a copper-clad circuit on the PCB board. The copper-clad circuit can make the connection between the resistor and the grounding terminal more stable, effectively avoiding the situation where the connection between the resistor and the grounding terminal is disconnected.

[0011] The PCB board is provided with a pin header, which is connected to the pin header connector, and the signal elastic contact is connected to the pin header through the copper-clad circuit on the PCB board. The signal terminal is connected to the pin header through the copper-clad circuit; and the signal inside the charging socket is transmitted to the outside of the charging socket through the pin header connector.

[0012] The two sides of the main housing are connected with flanges and large tail covers respectively. The main housing is provided with housing fixing holes, and the large tail cover is provided with tail cover fixing holes. The housing fixing holes correspond to the tail cover fixing holes, and fixing bolts I connected with the flange are passed through the housing fixing holes and the tail cover fixing holes. The fixing bolts I are threadedly connected with the flange after passing through the tail cover fixing holes and the housing fixing holes in sequence, thereby reducing the number of connecting bolts between the flange and the main housing, and between the main housing and the large tail cover, and at the same time ensuring the connection reliability between the flange, the main housing and the large tail cover.

[0013] The metal terminal also includes a power terminal, which is plugged into the main housing. The tail ends of the power terminal and the grounding terminal are respectively connected to cables, and the cables are located in the wire hole of the large tail cover; a sealing plug matching the cable is provided in the wire hole; and a small tail cover corresponding to the wire hole is provided on the large tail cover. The sealing plug is used to achieve sealing between the cable and the large tail cover to ensure the sealing of the charging socket; the small tail cover is used to limit the position of the cable and the sealing plug to ensure the stability of the position of the cable and the sealing plug on the charging socket, thereby ensuring the stability of the charging socket structure.

[0014] The wire hole is provided with a first spring claw or a second spring claw, the second spring claw is provided with a second spring claw plane, the ground terminal is provided with a shoulder plane, and the second spring claw plane cooperates with the shoulder plane; the first spring claw is provided with a first spring claw plane, the power terminal is provided with a power terminal boss, one side of the power terminal boss is provided with a boss plane, and the first spring claw plane cooperates with the boss plane. The front end surface of the power terminal cooperates with the main shell to limit the forward movement of the power terminal, the first spring claw limits the retreat of the power terminal, and then realizes the axial limit of the docking power terminal, and the second spring claw limits the axial position of the ground terminal through the cooperation of the second spring claw plane and the shoulder plane, ensuring the stable installation of the ground terminal position.

[0015] The beneficial effects of the present invention are as follows: when the signal terminal is connected to the signal elastic contact, the contact surface of the signal terminal presses down the signal elastic contact to achieve connection, and the protective groove completely wraps the signal elastic contact to protect the signal elastic contact. A PCB board is set in the charging socket to replace the connection of the wires between the components to avoid the situation of wire breakage during the assembly of the charging socket and ensure the assembly quality; in addition, during the assembly process of the charging socket, the metal terminal and the PCB board are contacted and connected by radial compression to achieve signal transmission between the metal terminal and the PCB board. The metal terminal can pass through the PCB board to achieve the connection between the metal terminal and the elastic terminal on the PCB board. The installation accuracy requirements of the metal terminal are low, which is convenient for workers to quickly assemble and is conducive to improving the assembly efficiency of the charging socket.

[0016] The fixing bolts I pass through the tail cover fixing holes and the shell fixing holes in sequence and are then threadedly connected to the flange, thereby reducing the number of connecting bolts between the flange and the main shell, and between the main shell and the large tail cover, while ensuring the connection reliability among the flange, the main shell and the large tail cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a charging socket structure that can be easily assembled according to the present invention Figure 1 ;

[0019] Figure 2 Schematic diagram of the charging socket structure Figure 2 ;

[0020] Figure 3 Cutaway view of charging socket Figure 1 ;

[0021] Figure 4 Cutaway view of charging socket Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the large tail cover structure;

[0023] Figure 6 This is a schematic diagram of the connection between the main housing and the PCB;

[0024] Figure 7 Schematic diagram of PCB board structure Figure 1 ;

[0025] Figure 8 Schematic diagram of PCB board structure Figure 2 ;

[0026] Fig. 9 Schematic diagram of the signal terminal structure;

[0027] Fig.10 Schematic diagram of metal terminal structure Figure 1 ;

[0028] Fig.11 Schematic diagram of metal terminal structure Figure 2 .

[0029] In the figure: 1, flange, 2, main shell, 21, shell fixing hole, 3, large tail cover, 301, large tail cover boss, 31, first small tail cover, 310, first small tail cover elastic arm, 32, second small tail cover, 321, second small tail cover elastic arm, 33, tail cover fixing hole, 34, fixing bolt I, 35, first elastic claw, 351, first elastic claw plane, 36, sealing plug, 37, wire hole, 38, second elastic claw, 381, second elastic claw plane, 4, power terminal, 4 1. Power terminal boss, 42. Boss plane, 43. Front end face of power terminal, 5. Grounding terminal, 51. Grounding terminal shoulder, 52. Shoulder plane, 6. Signal terminal, 61. Signal terminal protection groove, 62. Signal terminal contact surface, 7. PCB board, 71. Fixing bolt II, 72. Pin header, 73. Grounding elastic terminal, 74. Power terminal jack, 75. PCB board fixing hole, 76. Resistor, 77. Signal elastic contact, 8. Pin header connector. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, as Figure 8 As shown, a conveniently assembled charging socket includes a main housing 2, a PCB board 7 is connected to the main housing 2, a signal elastic contact 77 is provided on the PCB board 7, a signal terminal 6 is provided on the main housing 2, and the end of the signal terminal 6 contacts the signal elastic contact 77. The signal elastic contact 77 is arranged on the back of the PCB board 7, and the end surface of the signal terminal 6 is connected to the signal elastic contact 77 through axial compression, thereby realizing signal transmission.

[0032] Further, if Fig. 9 As shown, the end of the signal terminal 6 is provided with a signal terminal protection groove 61, the bottom of the signal terminal protection groove 61 is provided with a signal terminal contact surface 62, the signal elastic contact 77 is located in the signal terminal protection groove 61, and the signal elastic contact 77 is in contact with the signal terminal contact surface 62. When the signal terminal 6 is connected to the signal elastic contact 77, the signal terminal contact surface 62 presses down the signal elastic contact 77 to achieve the connection, and the signal terminal protection groove 61 completely wraps the signal elastic contact 77, which plays a role in protecting the signal elastic contact 77.

[0033] Embodiment 2, based on embodiment 1, a charging socket that can be easily assembled, such as Figure 6 , Figure 7As shown, a metal terminal is plugged into the main housing 2, and the metal terminal passes through the PCB board 7. The PCB board 7 is provided with an elastic terminal, and the elastic terminal is in radial contact with the metal terminal. The PCB board 7 is used to replace the wire to connect the various components to ensure stable connection and avoid disconnection; the PCB board 7 is provided with a socket, and the metal terminal passes through the socket to be plugged into the main housing 2. In this embodiment, an elastic terminal is provided on the side of the socket. When the metal terminal passes through the socket, the elastic terminal radially presses the metal terminal to achieve the connection between the elastic terminal and the metal terminal. The radial pressing has a low requirement on the installation position accuracy of the metal terminal, which is convenient for workers to quickly assemble and improve the assembly efficiency of the charging socket.

[0034] Further, the metal terminal includes a grounding terminal 5, and the elastic terminal includes a grounding elastic terminal 73, and the grounding terminal 5 is pressed and connected with the grounding elastic terminal 73. In this embodiment, three grounding elastic terminals 73 are provided at the edge of the socket on the PCB board 7, and the three grounding elastic terminals 73 work together to ensure that the grounding terminal 5 is arranged in the center of the socket, and at the same time ensure that the grounding terminal 5 and the grounding elastic terminal 73 are in stable contact. A shoulder 51 is provided on the grounding terminal 5, and the grounding elastic terminal 73 is in contact with the shoulder 51. The shoulder 51 increases the diameter size of the grounding terminal 5, so that the gap between the grounding elastic terminal 73 and the shoulder 51 is smaller, and the grounding elastic terminal 73 is more likely to contact the shoulder 51, thereby ensuring the stability of the connection between the grounding elastic terminal 73 and the grounding terminal 5.

[0035] In addition, during the production process of the PCB board 7, the relative position of the grounding elastic terminal 73 and the socket is adjustable. Specifically, according to the size of the shaft shoulder 51 on the grounding terminal 5 of different models, the distance between the grounding elastic terminal 73 and the edge of the socket is adjusted to keep the contact force between the grounding elastic terminal 73 and the grounding terminal 5 unchanged, thereby avoiding the situation where the contact force between the grounding elastic terminal 73 and the grounding terminal 5 is large, the grounding terminal 5 is inconvenient to install or the contact force is small, and the grounding elastic terminal 73 and the grounding terminal 5 are poorly contacted, thereby ensuring the quality of the charging socket.

[0036] Furthermore, a resistor 76 is provided on the PCB board 7, and the grounding elastic terminal 73 is connected to the resistor 76 through the copper-clad circuit on the PCB board 7. The grounding elastic terminal 73 is mounted on the PCB board 7, and the connection between CC1 and the 1 kilo-ohm resistor, and the connection between the 1 kilo-ohm resistor and the grounding elastic terminal 73 is realized through the copper-clad circuit on the PCB board 7.

[0037] Furthermore, a pin header 72 is provided on the PCB board 7, and the pin header 72 is connected to the pin header connector 8, and the signal elastic contact 77 is connected to the pin header 72 through the copper-clad circuit on the PCB board 7. The internal signal of the charging socket can be transmitted to the outside of the charging socket through the pin header connector 8. In addition, the signal elastic contact 77 is mounted on the PCB board 7, and the signal elastic contact 77 transmits the signal to the pin header 72 through the copper-clad circuit, and then the signal is transmitted by the pin header connector 8.

[0038] Further, if Figure 6 As shown, a PCB board fixing hole 75 is provided on the PCB board 7, and a fixing bolt II 71 is threadedly connected to the main housing 2. The fixing bolt II 71 passes through the PCB board fixing hole 75 and is connected to the main housing 2 to ensure that the PCB board 7 is stably installed on the main housing 2.

[0039] Embodiment 3, based on embodiment 1 or embodiment 2, a charging socket that can be easily assembled, such as Figure 1 , Figure 2 As shown, the flange 1 and the large tail cover 3 are connected to both sides of the main housing 2, the main housing 2 is provided with a housing fixing hole 21, and the large tail cover 3 is provided with a tail cover fixing hole 33. The housing fixing hole 21 corresponds to the tail cover fixing hole 33, and the housing fixing hole 21 and the tail cover fixing hole 33 are penetrated with fixing bolts I34 connected to the flange 1. The fixing bolts I34 pass through the tail cover fixing hole 33 and the housing fixing hole 21 in sequence and are threadedly connected to the flange 1, thereby reducing the number of connecting bolts between the flange 1 and the main housing 2, and between the main housing 2 and the large tail cover 3, and at the same time can ensure the connection reliability between the flange 1, the main housing 2 and the large tail cover 3.

[0040] Further, if Figure 3 As shown, the metal terminal also includes a power terminal 4, which is plugged into the main housing 2, and the tail ends of the power terminal 4 and the grounding terminal 5 are respectively connected to cables, and the cables are located in the wire hole 37 of the large tail cover 3; the wire hole 37 is provided with a sealing plug 36 that matches the cable; the large tail cover 3 is provided with a small tail cover corresponding to the wire hole 37. The sealing plug 36 is used to achieve sealing between the cable and the large tail cover 3 to ensure the sealing of the charging socket; the small tail cover is used to limit the position of the cable and the sealing plug 36 to ensure the stability of the position of the cable and the sealing plug 36 on the charging socket, thereby ensuring the stability of the charging socket structure.

[0041] In this embodiment, a first small tail cover 31 and a second small tail cover 32 are provided on the large tail cover 3, the first small tail cover 31 corresponds to the power terminal 4, the second small tail cover 32 corresponds to the grounding terminal 5, the first small tail cover 31 is provided with a first small tail cover elastic arm 310, the second small tail cover 32 is provided with a second small tail cover elastic arm 321, and a boss is provided on the large tail cover 3, the first small tail cover elastic arm 310 and the second small tail cover elastic arm 321 are respectively hung with the boss, thereby realizing the connection between the first small tail cover 31 and the second small tail cover 32 and the large tail cover 3, ensuring that the first small tail cover 31 and the second small tail cover 32 are stably installed on the large tail cover 3.

[0042] Further, if Figure 4 , Figure 5 As shown, the wire hole 37 is provided with a first spring claw 35 or a second spring claw 38, the second spring claw 38 is provided with a second spring claw plane 381, the grounding terminal 5 is provided with a shoulder plane 52, and the second spring claw plane 381 cooperates with the shoulder plane 52; the first spring claw 35 is provided with a first spring claw plane 351, the power terminal 4 is provided with a power terminal boss 41, one side of the power terminal boss 41 is provided with a boss plane 42, and the first spring claw plane 351 cooperates with the boss plane 42. The front end surface 43 of the power terminal cooperates with the main housing 2 to limit the forward movement of the power terminal 4, the first spring claw 35 limits the retreat of the power terminal 4, and then realizes the axial limit of the docking power terminal 4, and the second spring claw 38 limits the axial position of the grounding terminal 5 through the cooperation of the second spring claw plane 381 and the shoulder plane 52, ensuring the stable installation of the grounding terminal 5.

[0043] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveniently assembled charging socket, comprising a main housing (2), a PCB board (7) being connected to the main housing (2), characterized in that: A signal elastic contact (77) is provided on the PCB board (7), a signal terminal (6) is provided on the main housing (2), an end of the signal terminal (6) is in contact with the signal elastic contact (77), and a protective structure cooperating with the signal elastic contact (77) is provided at the end of the signal terminal (6).

2. The conveniently assembled charging socket according to claim 1, characterized in that: The protection structure comprises a signal terminal protection groove (61) arranged at the end of the signal terminal (6), a signal terminal contact surface (62) is provided at the bottom of the signal terminal protection groove (61), a signal elastic contact point (77) is located in the signal terminal protection groove (61), and the signal elastic contact point (77) is in contact with the signal terminal contact surface (62).

3. The conveniently assembled charging socket according to claim 1 or 2, characterized in that: A metal terminal is plugged into the main housing (2), and the metal terminal passes through the PCB board (7). The PCB board (7) is provided with an elastic terminal, and the elastic terminal is in radial contact with the metal terminal.

4. The conveniently assembled charging socket according to claim 3, characterized in that: The metal terminal comprises a grounding terminal (5), the elastic terminal comprises a grounding elastic terminal (73), and the grounding terminal (5) and the grounding elastic terminal (73) are pressed and connected.

5. The conveniently assembled charging socket according to claim 4, characterized in that: A shaft shoulder (51) is provided on the grounding terminal (5), and the grounding elastic terminal (73) is in contact with the shaft shoulder (51).

6. The conveniently assembled charging socket according to claim 5, characterized in that: A resistor (76) is provided on the PCB board (7), and the grounding elastic terminal (73) is connected to the resistor (76) via a copper-clad circuit on the PCB board (7).

7. The conveniently assembled charging socket according to claim 6, characterized in that: A pin row (72) is provided on the PCB board (7), the pin row (72) is connected to the pin row connector (8), and the signal elastic contact (77) is connected to the pin row (72) via a copper-clad circuit on the PCB board (7).

8. The conveniently assembled charging socket according to any one of claims 1, 2, 4 to 7, characterized in that: The main housing (2) is connected to flanges (1) and large tail covers (3) on both sides, respectively. The main housing (2) is provided with housing fixing holes (21), and the large tail covers (3) are provided with tail cover fixing holes (33). The housing fixing holes (21) and the tail cover fixing holes (33) are located at corresponding positions, and fixing bolts I (34) connected to the flanges (1) are inserted into the housing fixing holes (21) and the tail cover fixing holes (33).

9. The conveniently assembled charging socket according to claim 8, characterized in that: The metal terminal also includes an electrical connection terminal (4), which is plugged into the main housing (2), and the tail ends of the electrical connection terminal (4) and the grounding terminal (5) are respectively connected to cables, and the cables are located in the wire passing holes (37) of the large tail cover (3); a sealing plug (36) matching the cable is provided in the wire passing holes (37); and a small tail cover corresponding to the wire passing holes (37) is provided on the large tail cover (3).

10. The conveniently assembled charging socket according to claim 9, characterized in that: A first spring claw (35) or a second spring claw (38) is provided in the wire hole (37); a second spring claw plane (381) is provided on the second spring claw (38); a shoulder plane (52) is provided on the ground terminal (5); the second spring claw plane (381) cooperates with the shoulder plane (52); a first spring claw plane (351) is provided on the first spring claw (35); an electrical terminal boss (41) is provided on the electrical terminal (4); a boss plane (42) is provided on one side of the electrical terminal boss (41); the first spring claw plane (351) cooperates with the boss plane (42).

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