CN221262862U - Plug, socket and binding post for binding post of charging pile and charging pile - Google Patents

Abstract

A plug for a binding post of a charging pile, a socket, a binding post and a charging pile are disclosed, wherein the socket comprises a rear seat, a plug bush assembly arranged on the rear seat, and a face cover detachably connected to the rear seat and provided with a jack corresponding to the plug bush assembly. The plug bush assembly comprises a conductive plug bush and clamping pieces arranged outside the conductive plug bush, wherein the conductive plug bush comprises two elastic pieces which are oppositely arranged, the two elastic pieces respectively bulge towards each other to form a contact for clamping a plug, and the elasticity of the two elastic pieces forms a concave position at the outer side of the corresponding contact. The two opening ends of the clamping piece are respectively embedded into the concave positions, and elastic force which enables the two contacts to be close to each other is applied to the two elastic pieces.

Description

Plug, socket and binding post for binding post of charging pile and charging pile

Technical Field

The application relates to the technical field of charging piles, in particular to a plug, a socket and a wiring terminal for a wiring terminal of a charging pile and the charging pile.

Background

With the development and the scale of new energy automobiles, the requirement of charging vehicles through charging piles is increasingly vigorous.

The charging pile is internally provided with a wiring terminal for connecting a power line with the circuit board. As shown in fig. 1, the connection terminals are generally configured as a detachable plug-and-socket-type fitting structure for convenience of assembly. Therefore, the connection of the power line of the socket and the connection of the plug and the circuit board are finished firstly, and then the plug and the socket are matched and connected together, so that the connection of the power line to the circuit board can be finished.

The wiring terminal is formed into a plug and a socket, which indeed brings great convenience to the assembly process. On the other hand, however, the above-described construction of the connection terminal as an intermediate connection member bridging the power supply line and the circuit board presents challenges for electrical conductivity and long-term maintenance of such performance. Since the socket elastically clamps the plug by itself and thus maintains conductive contact with the plug. That is, the socket is used for clamping the metal plug bush of the plug, and not only has the function of conducting electricity, but also has the function of clamping and fixing the plug. And, with the conductive connection effect of plug, need to take the firm centre gripping plug of plug as the premise. Therefore, as the service time is prolonged, the metal plug bush gradually generates stress fatigue, so that the elastic clamping acting force of the metal plug bush is reduced, and the problem of poor conduction occurs.

Disclosure of utility model

In view of the above, the present utility model provides a plug, a socket, a terminal and a charging pile for a terminal of the charging pile, which can maintain the conductive connection between the socket and the plug for a long time, and avoid poor conduction.

In order to achieve the above object, the present utility model provides the following technical solutions.

A socket for a terminal of a charging post, comprising:

A rear seat;

The plug bush subassembly is established on the back seat, include: the clamping piece is sleeved outside the conductive plug bush; the conductive plug bush comprises two oppositely arranged elastic sheets, the two elastic sheets respectively bulge towards each other to form a contact for clamping the plug, and the elasticity forms a concave position at the outer side of the corresponding contact; the two opening ends of the clamping piece are respectively embedded into the concave positions, and inward elastic force is applied to the two elastic pieces, so that the two contacts have a trend of approaching each other;

The face cover is detachably connected to the rear seat and is provided with a jack corresponding to the plug bush component.

Preferably, a cushion block is arranged on the rear seat, and the cushion block and/or the rear seat are/is made of an electric insulation material; the plug bush component is arranged on the cushion block, so that the plug bush component is lifted away from contact with the rear seat.

Preferably, one end of the conductive plug bush is open, and comprises a bottom wall integrally connected with the two elastic sheets; the bottom wall extends outwards away from the opening end of the conductive plug bush to form a conductive pin.

Preferably, the rear seat is provided with a conductive joint assembly, and the conductive joint assembly comprises a frame which is approximately rectangular and a fastener arranged on the frame; the conductive pins extend into the frame and are used for clamping a power line between the conductive pins and the bottom wall of the frame; the end of the fastener abuts against the upper surface of the conductive pin and is used to apply a downward compressive force to the conductive pin.

Preferably, the end part of the conductive pin back opposite to the conductive plug bush is lifted upwards to form a limiting part, and the limiting part abuts against the upper wall of the frame.

The plug for the wiring terminal of the charging pile is used for being in plug-in fit with the socket in the embodiment, the plug comprises an inserting sheet, and the head end of the inserting sheet is detachably inserted between the two elastic sheets and is in contact with the contact.

Preferably, the insert is formed with teeth on the outer wall near the tail end, the teeth having a straight face toward the tail end and a bevel face toward the head end; the plug also comprises a shell, the shell is provided with a mounting hole penetrating through the front surface and the rear surface of the shell, and the position of the insert corresponding to the tooth is penetrated in the mounting hole and in interference fit with the mounting hole.

Preferably, an avoidance groove is formed at the tail end of the insert, and the avoidance groove is used for allowing molten welding materials to enter when the insert is welded with the circuit board.

A wire connection terminal comprising:

The socket according to the above embodiment;

the plug of the above embodiment is mated with the receptacle.

A charging pile comprising:

a housing;

the terminal according to the above embodiment, the terminal is housed in the housing.

In the embodiment, the clamping piece is sleeved outside the conductive plug bush, and the clamping piece applies inward elastic force to the elastic piece of the conductive plug bush. Thus, the force for clamping the plug need not be exerted entirely by the spring tabs of the conductive sleeve, but rather is exerted in part by the external clamping tabs. Therefore, the phenomenon that the elastic sheet of the conductive plug bush is stressed and tired can be reduced, so that the conductive connection between the socket and the plug can be maintained for a long time, and the conductive adverse event is avoided.

Drawings

FIG. 1 is a circuit module topology of a charging stake;

Fig. 2 is a schematic structural view of a plug and a socket included in the connection terminal of the present embodiment in a disassembled state;

FIG. 3 is a schematic view of the internal structure of the socket of FIG. 2;

FIG. 4 is a schematic view of the ferrule assembly of FIG. 3;

FIG. 5 is an exploded perspective view of the ferrule assembly of FIG. 4;

Fig. 6 is a schematic structural view of the insert sheet in fig. 2.

Description of the embodiments

As shown in fig. 1, the charging pile of the present embodiment includes a housing (not shown) and a connection terminal 100 accommodated in the housing. As shown in fig. 2, the connection terminal 100 includes a receptacle 101 for connection with a power line, a plug 102 for connection with a circuit board, and the plug 102 is mated with the receptacle 101.

As shown in fig. 3 to 5, the receptacle 101 includes a housing case composed of a rear seat 1011 at a rear end and a face cover 1012 at a front end, and a ferrule assembly 1013 housed in the housing case. Wherein, back seat 1011 and face cover 1012 can be connected by a buckle to realize detachable connection. The plurality (specifically, 5) of insert assemblies 1013 are provided on the rear seat 1011, and include: conductive sleeve 1014, and clip 1015 disposed outside conductive sleeve 1014. The conductive socket 1014 includes two oppositely disposed spring plates 1014a, the spring plates 1014a each bulge toward each other to form a contact 1014b for holding the plug 102, and the spring forms a recess 1014c outside the corresponding contact 1014 b. The two open ends of the holding piece 1015 are respectively inserted into the recess 1014c, and exert an inward elastic force on the two elastic pieces 1014a, which causes the two contacts 1014b to have a tendency to approach each other. The cover 1012 has a receptacle 1016 corresponding to the ferrule assembly 1013 for receiving a blade 1021 of the plug 102 for conductive engagement with the conductive ferrule 1014.

In this embodiment, the clamping piece 1015 is made of a material with better toughness, such as stainless steel, and is sleeved on the conductive sleeve 1014, and the two opening ends are used to apply inward force to the two elastic pieces 1014a of the conductive sleeve 1014, so that the force of clamping the inserting piece 1021 by the two elastic pieces 1014a of the conductive sleeve 1014 is not applied by the conductive sleeve 1014, which is very beneficial to reducing stress fatigue of the conductive sleeve 1014, and is beneficial to keeping the clamping and conductive cooperation of the two elastic pieces 1014a of the conductive sleeve 1014 and the inserting piece 1021 for a long time, so as to avoid poor conduction.

Since the socket unit 1013 is electrically connected to the power line, in order to prevent the human body from contacting the receiving case of the socket 101 and causing an electric shock, the rear seat 1011 is provided with a spacer 1017, and the socket unit 1013 is provided on the spacer 1017 such that the socket unit 1013 is lifted away from contact with the rear seat 1011. The spacer 1017 and/or the rear seat 1011 are made of an electrically insulating material, so as to prevent the rear seat 1011 from being electrified, and further prevent a human body from accidentally contacting the receiving case of the socket 101 to cause an electric shock accident.

The conductive sleeve 1014 has an opening at one end, and includes a bottom wall 1014d integrally connecting two spring plates 1014 a. The bottom wall 1014d extends outwardly away from the open end of the conductive sleeve 1014 to form a conductive pin 1018, the conductive pin 1018 being adapted to connect with a power cord. To achieve a secure connection of the conductive pins 1018 to the power cord, a conductive engagement member 1019 is provided on the rear housing 1011, the conductive engagement member 1019 comprising a generally rectangular frame 1019a and a fastener 1019b provided on the frame 1019 a. Frame 1019a is hollow in structure, and both conductive pins 1018 and power wires can extend into frame 1019a, which can be clamped between conductive pins 1018 and bottom wall 1014d of frame 1019 a. The end of fastener 1019b abuts against the upper surface of conductive pin 1018 and can apply a downward compressive force to conductive pin 1018 to compress the power cord. In this embodiment, the fastener 1019b is a bolt.

Further, the end of the conductive pin 1018 facing away from the conductive socket 1014 is lifted up to form a limiting portion 1018a, and the limiting portion 1018a can abut against the upper wall of the frame 1019a, so as to limit the conductive pin 1018, and prevent the conductive pin 1018 from being separated from the frame 1019 a.

As shown in fig. 6, in the present embodiment, the plug 102 includes a metal insert 1021, and the head end of the insert 1021 is detachably inserted between the spring plates 1014a of the two sockets 101 and contacts with the contacts 1014b, thereby achieving conductive connection of the plug 102 and the sockets 101.

The tail end of the insert 1021 is used for being connected with a circuit board in a welding mode. In one embodiment, to improve the welding strength of the two, a relief groove 1022 is formed at the tail end of the insert 1021, and the relief groove 1022 is used for allowing molten welding material to enter when the insert 1021 is welded with the circuit board. Thus, the stacking and bonding area of the solder material can be increased, and the connection strength between the plug 102 and the circuit board can be improved.

Further, the insert 1021 is formed with teeth 1023 at the outer wall near the trailing end, the teeth 1023 having a straight face toward the trailing end and a beveled face toward the leading end. The plug 102 further includes a housing 1024, where the housing 1024 has mounting holes penetrating through the front and rear surfaces thereof, and the portions of the insert 1021 corresponding to the teeth 1023 are inserted into the mounting holes and are in interference fit with the mounting holes.

Since the plug 102 is inserted into the receptacle 101 along the tail end toward the head end when mated with the receptacle 101. Thus, the tab 1021 has a tendency to move rearward (in the direction of the trailing end) relative to the housing 1024. This places greater demands on the strength of the connection of the insert 1021 to the housing 1024. By arranging the teeth 1023 on the insert 1021, the rear end of the teeth 1023 is directly engaged with the housing 1024, so as to form a rearward limit function, thereby preventing the insert 1021 from being withdrawn from the housing 1024 during the process of inserting the insert 1021 into the receptacle 101. The front bevel design of the teeth 1023 allows the insert 1021 to be inserted forward into the mounting hole of the housing 1024, thereby facilitating assembly of the insert 1021 with the housing 1024.

The foregoing is merely a few embodiments of the present utility model and those skilled in the art, based on the disclosure herein, may make numerous changes and modifications to the embodiments of the present utility model without departing from the spirit and scope of the utility model.

Claims (10)

1. A socket for a terminal of a charging post, comprising:

A rear seat;

The plug bush subassembly is established on the back seat, include: the clamping piece is sleeved outside the conductive plug bush; the conductive plug bush comprises two oppositely arranged elastic sheets, wherein the two elastic sheets respectively bulge towards each other to form a contact for clamping a plug, and the elastic sheets form concave positions at the outer sides of the corresponding contacts; the two opening ends of the clamping piece are respectively embedded into the concave positions, and inward elastic force is applied to the two elastic pieces, so that the two contacts have a trend of approaching each other;

The face cover is detachably connected to the rear seat and is provided with a jack corresponding to the plug bush component.

2. The socket of claim 1, wherein a pad is provided on the rear seat, the pad and/or rear seat being made of an electrically insulating material; the plug bush component is arranged on the cushion block, so that the plug bush component is lifted away from contact with the rear seat.

3. The jack of claim 1, wherein said conductive sleeve has an opening at one end, including a bottom wall integrally connecting two of said spring plates; the bottom wall extends outwards away from the opening end of the conductive plug bush to form a conductive pin.

4. A jack as claimed in claim 3 wherein said rear seat is provided with an electrically conductive engagement assembly comprising a generally rectangular frame, a fastener provided on said frame; the conductive pins extend into the frame and are used for clamping a power line between the conductive pins and the bottom wall of the frame; the end of the fastener abuts against the upper surface of the conductive pin and is used to apply a downward compressive force to the conductive pin.

5. The jack of claim 4, wherein the conductive pin backs are upturned toward ends of the conductive sleeve to form a stop portion, the stop portion abutting against an upper wall of the frame.

6. A plug for a connection terminal of a charging pile, characterized in that the plug is adapted to be in plug-in fit with a socket according to any one of claims 1-5, the plug comprising a blade, the head end of which is detachably inserted between two of the spring plates and is in contact with the contact.

7. The plug of claim 6, wherein the blade defines teeth on an outer wall proximate the tail end, the teeth having a straight face toward the tail end and a beveled face toward the head end;

The plug also comprises a shell, the shell is provided with a mounting hole penetrating through the front surface and the rear surface of the shell, and the position of the insert corresponding to the tooth is penetrated in the mounting hole and in interference fit with the mounting hole.

8. The plug of claim 6, wherein the tail end of the blade is formed with a relief groove for the entry of molten solder material when the blade is soldered to a circuit board.

9. A terminal block, comprising:

a socket as claimed in any one of claims 1 to 5;

The plug of any of claims 6-8, the plug mated with the receptacle.

10. A charging pile, comprising:

a housing;

the electrical terminal of claim 9, the electrical terminal being received within the housing.