CN112086779A

CN112086779A - PCB (printed circuit board) end connecting wire structure of charging gun

Info

Publication number: CN112086779A
Application number: CN202010743941.XA
Authority: CN
Inventors: 高春江
Original assignee: Shenzhen Yuedian New Energy Technology Co ltd
Current assignee: Shenzhen Yuedian New Energy Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-12-15
Anticipated expiration: 2040-07-29
Also published as: CN112086779B

Abstract

The invention discloses a charging gun PCB terminal connecting wire structure, which comprises a PCB board and a cable connector used for connecting the PCB board and a cable; the cable connector comprises a connector body arranged on the PCB, at least three wiring terminals arranged on the connector body and used for connecting the cable, and a cable fixing structure arranged on the connector body and used for fixing the cable; at least three binding post uses cable fixed knot to construct and is fan-shaped setting as the axle center. The charging gun PCB terminal connection wire provided by the invention has the advantages of reasonable structural design, good voltage-resistant insulating performance and high assembly efficiency.

Description

PCB (printed circuit board) end connecting wire structure of charging gun

Technical Field

The invention relates to the field of charging guns, in particular to a PCB (printed circuit board) end connecting wire structure of a charging gun.

Background

Along with the rapid development of the electric automobile industry, the stability requirement on a charging system is very high, wherein the charging gun can be used for connecting an electric automobile and charging a pile, so that the convenience is provided for an automobile owner.

However, the existing charging gun has unreasonable wiring structure design in the PCB end, and the cable is usually directly connected with the PCB, so that the problems of poor voltage-resistant insulation and disconnection of the cable and the PCB exist, and potential hazards exist in products; or rifle PCB end that charges utilizes the terminal of neatly arranging, and the cable passes through the terminal to be connected with the PCB board, but the inventor is in the assembling process, will cut out the cable usually many times, just can accomplish to install the cable on the terminal, and the packaging efficiency is low, unfavorable operation.

Disclosure of Invention

The embodiment of the invention provides a charging gun PCB end wiring structure, which aims to solve the problems that in the prior art, the wiring structure of the charging gun PCB end is unreasonable in design, so that hidden dangers exist in products and the assembling efficiency is low.

The invention provides a charging gun PCB terminal connection wire structure which is used for connecting a cable and comprises a PCB and a cable connector used for connecting the PCB and the cable; the cable connector comprises a connector body arranged on the PCB, at least three wiring terminals arranged on the connector body and used for connecting the cable, and a cable fixing structure arranged on the connector body and used for fixing the cable; at least three binding post uses cable fixed knot to construct and is fan-shaped setting as the axle center.

Preferably, a Pin pinhole is arranged on the PCB; the connector body is provided with a terminal mounting hole opposite to the Pin pinhole; the bottom of the wiring terminal is provided with a Pin needle matched with the Pin needle hole, the wiring terminal is assembled in the terminal mounting hole, and the Pin needle penetrates through the terminal mounting hole and is assembled in the Pin needle hole.

Preferably, the charging gun PCB terminal connection structure further comprises a fixing metal ring used for connecting the cable and the connection terminal, and a cable insulating part is arranged at the position where the fixing metal ring is connected with the cable.

Preferably, the cable connector further includes an insulating protrusion disposed on a side of the connector body opposite to the PCB; the PCB is provided with an insulation groove, and the insulation bulge is assembled on the insulation groove.

Preferably, the cable connector further includes an insulating spacer disposed on the connector body for separating two adjacent connection terminals, and the insulating spacer is provided with an opening for the cable to pass through.

Preferably, the cable connector is a triangular plug connector, the two triangular plug connectors are respectively arranged at two ends of the PCB, and the insulating partition is a triangular insulating member.

Preferably, the charging gun PCB terminal wiring structure further comprises a signal connector arranged on one of the triangular plug connectors, and the signal connector is provided with a signal insulating member; the connector comprises a connector body and is characterized in that a first insulation sliding groove with the length smaller than the thickness of the connector body is arranged on the connector body, a second insulation sliding groove with the length smaller than the length of the triangular insulation part is arranged outside the triangular insulation part, and a first sliding rail matched with the first insulation sliding groove and a second sliding rail matched with the second insulation sliding groove are arranged on the signal insulation part.

Preferably, the cable fixing structure includes a cable fixing member for connecting with the cable and a cable buckle connected with the connector body, and the cable buckle is provided with an accommodating portion matched with the cable fixing member.

Preferably, the cable buckle comprises a buckle fixing piece and a buckle moving piece connected with the buckle fixing piece, and the buckle fixing piece comprises a fixing body assembled on the connector main body and a fixing clamping part arranged on the body; the buckle moving part includes the fly leaf and sets up on the fly leaf with the relative activity joint portion of fixed joint portion, fixed joint portion with activity joint portion joint is so that connect the buckle mounting with the buckle moving part is connected.

Preferably, the snap fixing member further includes a first receiving wall extending outwardly along two opposite sides of the fixing body, and the snap moving member further includes a second receiving wall extending outwardly along two opposite sides of the moving plate; the fixed body, the movable plate, the first accommodating wall and the second accommodating wall cooperate to form an accommodating part.

The embodiment of the invention provides a charging gun PCB terminal connection structure, wherein the number of cables is at least three, one cable is correspondingly connected with one terminal, so that the cables are electrically connected with a PCB board by utilizing the terminal, because the three terminals are arranged in a fan shape by taking a cable fixing structure as an axis, the distance between each terminal and the cable fixing structure is equal, when the charging gun PCB terminal connection structure is assembled subsequently, the cables and the terminals can be quickly connected by only cutting a plurality of cables at the same time, so that the assembly efficiency is improved, and the cables and the PCB board are quickly connected. Utilize cable fixed knot to construct the fixed cable to ensure that cable and binding post are connected firmly, avoid dragging the cable, lead to cable and binding post disconnection, cause potential safety hazard and harm.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of a terminal structure of a PCB of a charging gun according to an embodiment of the present invention;

FIG. 2 is an exploded view of the terminal structure of the PCB of the charging gun in one embodiment of the present invention;

FIG. 3 is a schematic view of a cable connector according to an embodiment of the present invention;

FIG. 4 is a schematic view of the cable connector of FIG. 3 from another perspective;

fig. 5 is a schematic structural view of the snap-fit movable member according to an embodiment of the present invention.

Wherein,

10. a PCB board; 11. positioning holes; 12. a Pin pinhole; 13. an insulating groove;

20. a cable connector; 21. a connector body; 211. a positioning column; 212. positioning a buckle; 213. a terminal mounting hole; 22. a wiring terminal; 221. a Pin needle; 23. a cable fixing structure; 231. a cable fixing member; 232. a cable buckle; 2321. an accommodating portion; 2322. a fastener fixing member; 23221. a fixed body; 23222. a fixed clamping part; 23223. a first containing wall; 2323. a buckle moving part; 23231. a movable plate; 23232. a movable clamping part; 23233. a second accommodating wall; 24. an insulating protrusion; 25. an insulating spacer; 251. a second insulating chute; 26. a first insulating runner; 28. a signal connector; 281. a signal insulator; 282. a first slide rail; 283. a second slide rail;

30. fixing a metal ring; 31. a cable insulator.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention provides a charging gun PCB terminal connection structure, as shown in FIGS. 1 and 2, for connecting a cable, comprising a PCB 10 and a cable connector 20 for connecting the PCB 10 and the cable; the cable connector 20 comprises a connector body 21 arranged on the PCB board 10, at least three connection terminals 22 arranged on the connector body 21 for connecting cables, and a cable fixing structure 23 arranged on the connector body 21 for fixing the cables; at least three terminals 22 are disposed in a fan shape with the cable fixing structure 23 as an axis.

The quantity of cable is three at least in this embodiment, a cable corresponds with a binding post 22 and is connected, in order to utilize binding post 22 to realize cable and PCB board 10 electrical connection, because three binding post 22 uses cable fixed knot to construct 23 and be fan-shaped setting as the axle center, then each binding post 22 is equal with cable fixed knot constructs 23's distance, during follow-up equipment, only need once tailor many cables simultaneously, then can be connected cable and binding post 22 fast, in order to improve packaging efficiency, realize connecting cable and PCB board 10 fast. Avoid the staff to tailor the cable many times, the assembling process is loaded down with trivial details.

Utilize cable fixed knot to construct 23 fixed cable to ensure that cable and binding post 22 are connected firmly, avoid not having any fixed knot structure between cable and the binding post 22, lead to cable and binding post 22 easy disconnection, cause potential safety hazard and harm.

As an example, the PCB 10 is provided with a positioning hole 11, a positioning post 211 opposite to the positioning hole 11 is provided on a side of the connector body 21 opposite to the PCB 10, and a rotatable positioning buckle 212 is provided on the positioning post 211, wherein during assembly, the positioning post 211 passes through the positioning hole 11 and rotates the positioning buckle 212 to connect the connector body 21 and the PCB 10 for connecting the connecting terminal 22 and the PCB 10 in the following. It can be understood that the connector body 21 can be movably connected to the PCB 10 for subsequent maintenance, and the cable connector 20 or the PCB 10 can be flexibly replaced, thereby improving the utilization rate of each device.

As an example, the charging gun PCB terminal connection structure of the present solution is applied to the two PCB terminals in the charging gun mode, so as to effectively improve the terminal assembly efficiency.

In one embodiment, as shown in fig. 3 and 4, a Pin pinhole 12 is provided on the PCB 10; the connector body 21 is provided with a terminal mounting hole 213 opposite to the Pin pinhole 12; the bottom of the terminal block 22 is provided with a Pin 221 matching with the Pin hole 12, the terminal block 22 is fitted in the terminal mounting hole 213, and the Pin 221 passes through the terminal mounting hole 213 and is fitted in the Pin hole 12.

In this embodiment, the number of the Pin pins 221 is several, so as to satisfy the requirement of large current transmission, effectively improve the charging efficiency, and shorten the charging time.

In one embodiment, as shown in fig. 2, the terminal wiring structure of the PCB of the charging gun further includes a fixing metal ring 30 for connecting the cable and the terminal 22, and a cable insulator 31 is disposed at a position where the fixing metal ring 30 is connected to the cable.

Specifically, the terminal 22 is provided with a conductive threaded post, and the fixing metal ring 30 is sleeved on the threaded post and then connected with the threaded post by a nut so as to connect the fixing metal ring 30 with the terminal 22. The cable insulating part 31 is arranged at the connecting position of the fixing metal ring 30 and the cable, so that the good insulating performance of the terminal structure of the PCB of the charging gun is ensured, and the potential safety hazard is eliminated.

In one embodiment, as shown in fig. 2 and 4, the cable connector 20 further includes an insulating protrusion 24, the insulating protrusion 24 being disposed on a side of the connector body 21 opposite to the PCB; the PCB board 10 is provided with an insulation groove 13, and an insulation protrusion 24 is fitted on the insulation groove 13.

Specifically, when the connection terminals 22 are assembled in the terminal mounting holes 213 and the Pin needle 221 is assembled in the Pin needle hole 12, during charging, the creepage distance between adjacent connection terminals 22 is very short, and the problem of poor withstand voltage insulation is easily caused.

In one embodiment, as shown in fig. 3, the cable connector 20 further includes an insulating spacer 25 disposed on the connector body 21 for separating two adjacent connection terminals 22, and the insulating spacer 25 is provided with an opening for passing a cable therethrough.

In this embodiment, the insulating spacer 25 may separate two adjacent connection terminals 22 to increase the creepage distance between two adjacent connection terminals 22 on the side of the connector body 21 away from the PCB board 10, specifically, increase the creepage distance of the pin positions of the adjacent connection terminals 22, so as to ensure good voltage insulation of the charging gun PCB termination structure. In this embodiment, the insulating spacer 25 includes a plurality of compartments, each compartment corresponding to one of the terminals 22, so that a better insulating effect can be achieved.

It can be understood that the connector body 21 is provided with an insulating protrusion 24 on the side opposite to the PCB, and an insulating spacer 25 for separating two adjacent connection terminals 22 is provided on the connector body 21, so as to increase the creepage distance between the adjacent connection terminals 22 on the side opposite to the PCB on the connector body 21 and increase the creepage distance between the adjacent connection terminals 22 on the side far from the PCB board 10 on the connector body 21, thereby realizing the overall protection of the charging gun, and ensuring the good withstand voltage insulation of the PCB terminal connection structure of the charging gun.

In one embodiment, as shown in fig. 2, the cable connector 20 is a triangular plug connector, two triangular plug connectors are respectively disposed at two ends of the PCB board 10, and the insulating spacer 25 is a triangular insulating member.

In the embodiment, the two triangular plug connectors are respectively arranged at two ends of the PCB 10 to be respectively connected with the charging pile and the automobile so as to charge the automobile; at this time, the insulating spacer 25 is a triangular insulating member for separating the connection terminals 22 on the triangular plug connector.

In one embodiment, as shown in fig. 3, the terminal wiring structure of the charging gun PCB further includes a signal connector 28 disposed on a triangular plug connector, and the signal connector 28 is provided with a signal insulator 281; the connector body 21 is provided with a first insulation sliding groove 26 with a length smaller than the thickness of the connector body, a second insulation sliding groove 251 with a length smaller than the length of the triangular insulation piece is arranged outside the triangular insulation piece, and the signal insulation piece 281 is provided with a first sliding rail 282 matched with the first insulation sliding groove 26 and a second sliding rail 283 matched with the second insulation sliding groove 251.

Specifically, the signal connector 28 is provided on one of the triangular plug connectors so that when an abnormality occurs in the circuit, for example, when the voltage is too large, the triangular plug connector can be automatically disconnected to disconnect the circuit to protect the charging gun PCB terminal wiring structure. And a signal insulating member 281 is provided on the signal connector 28 so as to insulate the connection terminal 22 on the signal connector 28 from the connection terminal 22 of the adjacent triangular plug connector, ensuring good voltage-resistance insulation of the terminal structure of the charging gun PCB. It should be noted that the distance between the wire connecting terminal 22 on the signal connector 28 and the cable fixing structure 23 is smaller than or equal to the distance between the wire connecting terminal 22 of the adjacent triangular plug connector and the cable fixing structure 23, so as to better protect the cable connected to the signal connector 28.

Specifically, since the connector body 21 is provided with the first insulating sliding groove 26 having a length smaller than the thickness of the connector body, and the triangular insulating member is provided with the second insulating sliding groove 251 having a length smaller than the length of the triangular insulating member, the length of the first insulating sliding groove 26 is smaller than the thickness of the connector body, and the length of the second insulating sliding groove 251 is smaller than the length of the triangular insulating member, so that the first sliding rail 282 enters the first insulating sliding groove 26 and is limited in the first insulating wall sliding groove, and the second sliding rail 283 enters the second insulating sliding groove 251 and is limited in the second insulating wall sliding groove, thereby flexibly selecting whether to use the signal connector 28 according to actual needs. It can be understood that the width of the groove bottom of the first insulation sliding groove 26 is greater than the width of the groove opening, so that the first sliding rail 282 is limited in the second insulation wall sliding groove, and the first sliding rail 282 is prevented from sliding off the first insulation sliding groove 26; similarly, the width of the bottom of the second insulating sliding groove 251 is greater than the width of the notch, so that the second sliding rail 283 is limited in the second insulating wall sliding groove, and the second sliding rail 283 is prevented from sliding off the second insulating sliding groove 251.

In one embodiment, the connector body 21 is molded with a cable identification that mates with the wire terminal 22. Be provided with the cable sign to do benefit to subsequent cable and connect, improve wiring efficiency. Specifically, the position that connector body 21 set up binding post 22 corresponds respectively and moulds plastics "L", "PE" and "N" sign, live wire and mark to the live wire is connected with the binding post 22 that "L" sign corresponds, and the ground wire is connected with the binding post 22 that "PE" sign corresponds, and the zero line is connected with the binding post 22 that "N" sign corresponds.

In an embodiment, as shown in fig. 2, the cable fixing structure 23 includes a cable fixing member 231 for connecting with a cable and a cable catch 232 connected with the connector body, and the cable catch 232 is provided with a receiving portion 2321 matching with the cable fixing member 231.

Specifically, the cable fixing member 231 is connected with the cable to fix the cable into a bundle, and then the cable fixing member 231 is installed in the accommodating portion 2321, in this embodiment, the outside of the cable fixing member 231 is matched with the inner wall of the accommodating portion 2321, so that the accommodating portion 2321 limits the cable fixing member 231, protects the cable, and prevents the cable fixing member 231 from moving, which causes disconnection between the cable and the connection terminal 22, and causes potential safety hazards and hazards.

As an example, the cable holder 231 is a holder in which two semicircular housings are fitted to each other, and the cable is installed at the center of the two semicircular housings. At this time, the inside of the accommodating part 2321 is matched with the outer shape of the cable fixing member 231, so that the accommodating part 2321 restricts the cable fixing member 231 to protect the cable. It is understood that the cable fixing member 231 may have other shapes, and is not limited herein as long as the cable fixing member can fix the cable.

In an embodiment, as shown in fig. 2 to 5, the cable catch 232 includes a catch fixing member 2322 and a catch moving member 2323 connected to the catch fixing member 2322, the catch fixing member 2322 includes a fixing body 23221 assembled to the connector main body and a fixing catch portion 23222 provided on the body; the snap-moving member 2323 includes a movable plate 3231 and a movable engaging portion 23232 disposed on the movable plate 3231 and opposite to the fixed engaging portion 23222, and the fixed engaging portion 23222 engages with the movable engaging portion 23232 to connect the connection snap-fixing member 2322 with the snap-moving member 2323.

As an example, two ends of the fixed body 23221 are respectively provided with two fixed clamping portions 23222, and two ends of the movable plate 3231 are respectively provided with two movable clamping portions 23232 opposite to the fixed clamping portions 23222, so that the fixed clamping portions 23222 and the movable clamping portions 23232 are clamped to limit the cable clamp 232, and the cable is ensured to be replaceable, which is beneficial to improving the flexibility of subsequent operations.

As another example, one end of the fixed body 23221 is rotatably connected to one end of the movable plate 3231 by a pin, the other end of the fixed body 23221 is provided with a fixed clamping portion 23222, the other end of the movable plate 3231 is provided with a movable clamping portion 23232 opposite to the fixed clamping portion 23222, and the fixed clamping portion 23222 is clamped to the movable clamping portion 23232 to limit the cable clamp 232 and ensure that the cable can be replaced, which is beneficial to improving the flexibility of subsequent operations.

In one embodiment, as shown in fig. 4 and 5, the snap mount 2322 includes a first receiving wall 23223 extending outwardly along opposite sides of the fixed body 23221, and the snap-acting member 2323 further includes a second receiving wall 23233 extending outwardly along opposite sides of the movable plate 3231; the fixed body 23221, the movable plate 3231, the first accommodation wall 23223 and the second accommodation wall 23233 cooperate to form the accommodation portion 2321.

In this embodiment, the fixed body 23221 and the first accommodating wall 23223 form a cavity with an opening at one end, the movable plate 3231 and the second accommodating wall 23233 form a cavity with an opening at one end, and the openings of the two cavities are opposite, so that the fixed body 23221, the movable plate 3231, the first accommodating wall 23223 and the second accommodating wall 23233 cooperate to form the accommodating portion 2321.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. A charging gun PCB terminal connection structure is used for connecting a cable and is characterized by comprising a PCB and a cable connector used for connecting the PCB and the cable; the cable connector comprises a connector body arranged on the PCB, at least three wiring terminals arranged on the connector body and used for connecting the cable, and a cable fixing structure arranged on the connector body and used for fixing the cable; at least three binding post uses cable fixed knot to construct and is fan-shaped setting as the axle center.

2. The connector structure of claim 1, wherein the PCB board is provided with Pin holes; the connector body is provided with a terminal mounting hole opposite to the Pin pinhole; the bottom of the wiring terminal is provided with a Pin needle matched with the Pin needle hole, the wiring terminal is assembled in the terminal mounting hole, and the Pin needle penetrates through the terminal mounting hole and is assembled in the Pin needle hole.

3. The charging gun PCB terminal structure of claim 1, further comprising a fixing metal ring for connecting the cable and the terminal, wherein a cable insulator is provided at a position where the fixing metal ring is connected to the cable.

4. The charging gun PCB termination line structure of claim 1, wherein the cable connector further comprises an insulating protrusion disposed on an opposite side of the connector body from the PCB; the PCB is provided with an insulation groove, and the insulation bulge is assembled on the insulation groove.

5. The charging gun PCB terminal structure of claim 1, wherein the cable connector further comprises an insulating spacer disposed on the connector body for separating two adjacent terminals, the insulating spacer having an opening for the cable to pass through.

6. The charging gun PCB terminal structure of claim 5, wherein the cable connectors are triangular plug connectors, two triangular plug connectors are respectively disposed at two ends of the PCB, and the insulating partition is a triangular insulating member.

7. The charging gun PCB termination line structure of claim 6, further comprising a signal connector disposed on one of the triangular plug connectors, the signal connector having a signal insulator disposed thereon; the connector comprises a connector body and is characterized in that a first insulation sliding groove with the length smaller than the thickness of the connector body is arranged on the connector body, a second insulation sliding groove with the length smaller than the length of the triangular insulation part is arranged outside the triangular insulation part, and a first sliding rail matched with the first insulation sliding groove and a second sliding rail matched with the second insulation sliding groove are arranged on the signal insulation part.

8. The PCB terminal connection structure of claim 1, wherein the cable fixing structure comprises a cable fixing member for connecting with the cable and a cable buckle connected with the connector body, and the cable buckle is provided with a receiving portion matched with the cable fixing member.

9. The charging gun PCB terminal structure of claim 8, wherein the cable buckle comprises a buckle fixing member and a buckle moving member connected with the buckle fixing member, the buckle fixing member comprises a fixing body assembled on the connector main body and a fixing clamping portion arranged on the body; the buckle moving part includes the fly leaf and sets up on the fly leaf with the relative activity joint portion of fixed joint portion, fixed joint portion with activity joint portion joint is so that connect the buckle mounting with the buckle moving part is connected.

10. The connector of claim 8, wherein the snap fastener includes first receiving walls extending outwardly along opposite sides of the fixed body, and the snap movable member includes second receiving walls extending outwardly along opposite sides of the movable plate; the fixed body, the movable plate, the first accommodating wall and the second accommodating wall cooperate to form an accommodating part.