CN109861032B - Electric connector - Google Patents

Abstract

The invention relates to the technical field of magnetic attraction charging, in particular to an electric connector. The electric connector is used for being matched with the electric connection device, the electric connector comprises a bus structure and terminal assemblies, at least two terminal assemblies are arranged at intervals, each terminal assembly comprises an electric connection terminal, an electric connection arm with one end connected with the electric connection terminal and the other end electrically connected with the bus structure and elastic, and a magnetic piece which is positioned on one side of the electric connection terminal and is magnetic, wherein the electric connection terminal is positioned between the magnetic piece and the electric connection device, and the magnetic piece is used for receiving external magnetic attraction towards the electric connection device and pushing the electric connection terminal to and electrically connecting the electric connection device. When the invention is used for magnetic attraction, the electric connection of each electric connection terminal is mutually independent, and at least two terminal assemblies are arranged, so that the connection reliability of the electric connector is improved.

Description

Electric connector

Technical Field

The invention relates to the technical field of magnetic attraction charging, in particular to an electric connector.

Background

At present, most of charging functions of many wearing products on the market are designed to be magnetic charging structures, and the charging structures comprise a male head seat and a female head seat; the male and female bases each include a connector that is electrically connected to one another, the connector including an electrical terminal. The male head seat and the female head seat are internally provided with magnetic pieces which are mutually magnetically attracted, and the male head seat and the female head seat can be automatically attracted and contacted when being close to each other, so that the electric connection terminals arranged in the male head seat and the female head seat are mutually and electrically connected for charging.

Typically, the electrical terminals are provided in pairs to facilitate processing. Wherein, the positive electric connection terminal of electrode sets up as a set of and connects as an organic wholely, and the negative electric connection terminal of electrode sets up as a set of and also connects as an organic wholely.

However, when the electric connection is performed, the electric connection terminals in the same group can interfere with each other, namely, the electric connection terminals in the same group can swing, accidentally vibrate and pull due to operation in the plugging process, and the deformation and tail tilting of the electric connection terminals are caused, so that the electric connection is unstable.

Disclosure of Invention

The invention aims to provide an electric connector, which aims to solve the problem of how to improve the reliability of the electric connector when in electric connection.

The invention is realized in that an electrical connector for mating with an electrical connector comprises a bus structure and terminal assemblies, at least two terminal assemblies being arranged at intervals, each terminal assembly comprising an electrical connection terminal, an electrical connection arm having elasticity and one end connected with the electrical connection terminal and the other end electrically connected with the bus structure, and a magnetic member having magnetism and located at one side of the electrical connection terminal, wherein the electrical connection terminal is located between the magnetic member and the electrical connector, and the magnetic member is used for receiving magnetic attraction towards the outside of the electrical connector and pushing and electrically connecting the electrical connection terminal to the electrical connector.

In one embodiment, the electrical connector further comprises a housing structure including a base having a front facing toward the electrical connector and a back facing away from the electrical connector, the back facing defining a cavity in the shape of an opening for the placement of the terminal assembly and the bus structure, the electrical connector being located between the magnetic member and the front facing, the front facing defining a conductive aperture for the electrical connector to electrically connect each of the electrical connectors.

In one embodiment, the bottom of the accommodating cavity is provided with a wiring groove for placing the terminal assembly, the conductive hole is communicated with the wiring groove, the electric connection terminal is arranged at one end of the wiring groove and covers the conductive hole, the electric connection arm extends to the other end of the wiring groove and is connected with the bus structure, and one end of the magnetic piece is abutted to the electric connection terminal.

In one embodiment, the slot bottom of the wiring slot is provided with a countersunk head slot, the conductive hole is communicated with the countersunk head slot, the electric connection terminal is in a cap shape and is arranged in the countersunk head slot, the electric connection arm is connected with the cap edge of the electric connection terminal, and one end of the magnetic piece is positioned at the concave part of the electric connection terminal and compresses the electric connection terminal in the corresponding countersunk head slot.

In one embodiment, the slot bottom of the wiring slot is provided with a countersink, the conductive hole is communicated with the countersink, the electric connection terminal is disc-shaped and comprises a disc body arranged in the countersink, a connecting ring positioned in the wiring slot and connected with the electric connection arm, and a plurality of connecting ribs which are connected with the connecting ring and the disc body, and one end of the magnetic piece pushes the disc body into the corresponding countersink.

In one embodiment, the connecting ribs are uniformly arranged along the circumference of the corresponding disc body, and the groove wall of each countersunk groove is provided with an avoiding groove for the connecting ribs to pass through at the position corresponding to the connecting ribs.

In one embodiment, the terminal assemblies are arranged in pairs and at least two pairs are provided.

In one embodiment, at least one pair of the terminal assemblies is configured for data communication.

In one embodiment, both of the terminal assemblies of any pair are axisymmetric about the same straight line of symmetry.

In one embodiment, the connecting line of the centers of any two electric connection terminals positioned on the same side of the symmetrical line is not parallel to the symmetrical line.

In one embodiment, at least one pair of the magnetic pieces are opposite in magnetic pole direction.

In one embodiment, the magnetic pole directions of the two magnetic pieces of any pair are opposite.

In one embodiment, the magnetic pole directions of the magnetic pieces on the same side of the symmetrical line are identical.

In one embodiment, the bus structure includes a tail plug for plugging in an external device and a flexible circuit board for connecting the tail plug with each of the electrical connection arms.

In one embodiment, the accommodating cavity is provided with a wiring groove provided with the flexible circuit board, each wiring groove is communicated with the wiring groove, the flexible circuit board comprises a connecting section, a middle section and a tail plug section which are sequentially connected, the connecting section is connected with the terminal assembly, and the tail plug section is connected with the tail plug.

In one embodiment, the intermediate section is softened and the intermediate section is folded within the wiring slot to push/pull the flexible circuit board into/out of the wiring slot.

In one embodiment, the bus structure further comprises a limit post, wherein two ends of the limit post are respectively connected with two side slot walls of the wiring slot; the spacing post interval is provided with two, the interlude is two spacing post is the folding setting of zigzag.

In one embodiment, the bus structure further comprises a limit post, wherein two ends of the limit post are respectively connected with two side slot walls of the wiring slot; the limiting column is provided with one, and the middle section is folded and arranged in a U shape around the limiting column.

In one embodiment, the bus structure further includes a plurality of electrical connection bars, the number of the electrical connection bars is set corresponding to the number of the electrical connection arms, one end of each electrical connection bar is connected with the corresponding electrical connection arm, and the other end of each electrical connection bar is electrically connected with the connection section.

In one embodiment, a groove is formed in one end, connected with the flexible circuit board, of the electric connection strip, and the middle section is folded and arranged in the groove.

In one embodiment, the bus structure further comprises a reinforcing layer made of a tear resistant material, the surface of the tail insert section being provided with the reinforcing layer.

The invention has the technical effects that: after the electric connector and the external electric connector are magnetically attracted in place, the magnetic part pushes the electric connection terminal, so that the electric connection terminal is fully electrically contacted with the external electric connector, and the electric connection arm is elastically deformed. Since the electric terminals are individually arranged and independent from each other. Therefore, when the magnetic attraction is carried out, the electric connection of each electric connection terminal is not influenced, and at least two terminal assemblies are arranged, so that the reliability of the connection of the electric connector is improved.

Drawings

Fig. 1 is a schematic diagram of the magnetic attraction principle of an electrical connector and an electrical connector according to an embodiment of the present invention.

Fig. 2 is an exploded view of an electrical connector provided by an embodiment of the present invention.

Fig. 3 is a partial enlarged view at a of fig. 2.

Fig. 4 is a schematic structural view of a U-fold of a flexible circuit board.

The correspondence between the reference numbers and names in the drawings is as follows:

101. an electrical connection device; 102. an electrical connector; 50. a bus structure; 40. a terminal assembly; 41. an electrical connection terminal; 42. an electrical connection arm; 411. a connecting rib; 413. a tray body; 412. a connecting ring; 43. a magnetic member; 51. a flexible circuit board; 52. a tail plug; 511. a connection section; 512. an intermediate section; 513. a tail insertion section; 60. a housing structure; 62. a backing plate; 61. a base; 53. a limit column; 64. a receiving chamber; 611. wiring grooves; 612. wiring grooves; 613. a countersunk head groove; 614. an avoidance groove; 615. a conductive hole; 54. an electrical connection bar; 541. a groove;

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "vertical," "parallel," "bottom," "angular," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements.

Referring to fig. 1 to 3, an electrical connector 102 is provided in an embodiment of the present invention, which is connected to an external device and cooperates with an electrical connector 101 connected to a power source to charge the external device. Optionally, the external device in this example is a mobile phone, and in other examples, the external device may also be a tablet computer or the like.

Specifically, the electrical connector 102 is located between the electrical connector 101 and the mobile phone, and the electrical connector 102 is attached to the back of the mobile phone, it can be understood that the electrical connector 102 can take various connection modes to realize the back attachment connection with the mobile phone, such as a magnetic attraction mode, a sleeving mode of a mobile phone cover, or a clamping mode of a card. The electrical connector 102 includes: a bus structure and terminal assemblies 40, the terminal assemblies 40 being arranged at least two apart. Each terminal assembly 40 includes an electrical connection terminal 41, an electrical connection arm 42 having elasticity, and a magnetic member 43 that can generate a magnetic field. Specifically, the magnetic member 43 is a permanent magnet or a permanent magnet, and the magnetic member 43 is a flat cylinder. The number of the magnetic pieces 43 is the same as the number of the electric connection terminals 41 and is arranged in a one-to-one correspondence, that is, one magnetic piece 43 matches one electric connection terminal 41. One end of the electrical connection arm 42 is electrically connected to the electrical connection terminal 41, the other end of the electrical connection arm 42 is electrically connected to the bus structure, and the magnetic member 43 is located on the electrical connection terminal 41 side. The electrical connection terminal 41 is located between the magnetic member 43 and the electrical connection device, and the magnetic member 43 moves toward the electrical connection device under the action of magnetic attraction to push and electrically connect the electrical connection terminal 41 to the electrical connection device.

After the electric connector 102 and the external electric connector 101 are magnetically attracted in place, the magnetic members 43 independently push the corresponding electric connection terminals 41, so that the electric connection terminals 41 are fully electrically contacted with the external electric connector, at least two pairs of terminal assemblies 40 are arranged, and the electric connection arms 42 are elastically deformed. Since each of the electric connection terminals 41 and the corresponding magnetic member 43 are provided separately and independently from the other electric connection terminals 41 and magnetic members 43, the reliability of the electric connection of the individual electric connection terminals 41 is optimized. Therefore, the electrical connection of the respective electrical connection terminals 41 is not affected by each other at the time of magnetic attraction, and the reliability of the electrical connector connection is improved.

Referring to fig. 1 to 3, the electrical connector further includes a housing structure 60. The housing structure 60 includes a base 61, the base 61 has a front facing toward the electrical connector 101 and a back facing toward the electrical connector 101, and the back facing is provided with an open-shaped accommodating cavity 64. The material of the base 61 may be a plastic material, so that the base 61 may be integrally injection-molded through an injection molding process. The terminal assembly 40 is positioned in the receiving cavity 64 and the electrical terminals and the electrical connection arms 42 are each made of a material that is electrically conductive and not magnetically attractable. Optionally, the material of the electrical connection terminal 41 and the electrical connection arm 42 is copper, which has the characteristics of excellent conductivity and abundant resources. The bus structure 50 is disposed in the accommodating cavity 64 and is used for connecting the terminal assembly 40 and the mobile phone. The front facing is provided with conductive holes 615 for the electrical connection terminals of the electrical connection device 101.

The bottom of the accommodating cavity is provided with a wiring groove for placing the terminal assembly 40, the conductive hole is communicated with the wiring groove, the electric connection terminal 41 is arranged at one end of the wiring groove and covers the conductive hole, the electric connection arm 42 extends to the other end of the wiring groove and is connected with the bus structure, and one end of the magnetic piece 43 is abutted against the electric connection terminal 41. The terminal assembly 40 is disposed in the wiring groove 611, so that the movement of the electrical connection terminal can be prevented, which is advantageous for the stability of electrical connection.

The bottom of the wiring groove 611 is also provided with a countersunk head groove 613, and the conductive hole 615 is communicated with the countersunk head groove 613.

In one embodiment, the electrical connection terminal 41 is in a cap shape, the protruding portion of the electrical connection terminal 41 is located in the countersunk head groove 613, the electrical connection arm 42 is connected to the cap edge of the electrical connection terminal 41, and one end of the magnetic piece 43 is located in the concave portion of the electrical connection terminal 41 and presses the electrical connection terminal 41 into the corresponding countersunk head groove 613. The magnetic member 43 is provided in the recess of the electrical connection terminal 41, so that the overall thickness of the electrical connector 102 can be reduced.

In one embodiment, the electrical connection terminal 41 has a disc shape and includes a disc body 413 disposed in the countersunk slot 613, a connection ring 412 disposed in the wiring slot 611 and connected to the electrical connection arm 42, and a plurality of connection ribs 411 each connecting the connection ring 412 and the disc body 413, wherein one end of the magnetic member 43 presses the disc body 413 into the corresponding countersunk slot 613. The diameter of the magnetic piece 43 is adapted to the diameter of the disc body 413, and the conductive hole 615 is arranged corresponding to the center of the disc body and the center of the magnetic piece 43, so that the magnetic piece 43 can absorb the center by the center when magnetically absorbing. Specifically, one end of each connection rib 411 is connected to the inner side surface of the connection ring 412, and the other end of each connection rib 411 connects the disc side surface of the disc body 413. With disc body 413 and go-between 412 dislocation setting, in the assembly process of magnetic part 43 and disc body, can make disc body 413 wrap up in the one end of magnetic part 43 through a plurality of connecting ribs 411, place magnetic part 43 and disc body 413 together in corresponding countersunk head groove 613 again, can reduce electric connector 102's overall thickness.

The connecting ribs 411 are uniformly arranged along the circumference of the corresponding disc body 413, and the groove walls of the countersunk grooves 613 are provided with avoiding grooves 614 for the connecting ribs 411 to pass through at positions corresponding to the connecting ribs 411. The connection ribs 411 are disposed in the corresponding avoidance grooves 614, and further prevent the movement of the tray body 413, thereby improving the reliability of the electrical connector 102.

Referring to fig. 1 to 3, it can be understood that during processing, the connection ring 412, the disc body 413 and the plurality of connection ribs 411 can be integrally formed and located on the same plane, then the electrical connection terminal 41 is disposed above the countersunk slot 613, the magnetic member 43 is used to lower the platen body 413 towards the bottom of the countersunk slot 613, and each connection rib 411 is clamped in the corresponding avoidance slot 614, so that the connection ring 412 and the disc body 413 are arranged in a staggered manner, which is beneficial to reducing the overall thickness of the electrical connector 102.

The terminal assemblies 40 are arranged in pairs and at least two pairs are provided. At least one pair of terminal assemblies 40 is provided for data communication. In this embodiment, two pairs of terminal assemblies 40 are provided, and correspondingly, four conductive holes 615 are provided. One pair of terminal assemblies 40 is used for data communication of a handshake protocol when fast charging, and the other pair of terminal assemblies 40 is used for charging a mobile phone. The electrical connection arms 42 of the pair of terminal assemblies 40 for charging the cell phone may be widened so that the terminal assemblies 40 may pass a large current to support rapid charging of the cell phone.

Optionally, the pair of terminal assemblies 40 may also perform other data communication, such as when the mobile phone is connected to a computer through the electrical connector 102, the data exchange between the mobile phone and the computer may be realized through the pair of terminal assemblies 40.

When the plurality of pairs of terminal assemblies 40 are used for charging, the reliability and stability of the connection between the electrical connector 102 and the electrical connector 101 can be further improved. It will be appreciated that when the plurality of pairs of terminal assemblies 40 are used for data communication, the reliability of data communication in the handshake protocol may also be improved.

The two terminal assemblies 40 of any pair are axisymmetric about the same symmetry line, and the connecting lines of any two adjacent electric terminals 41 located on the same side of the symmetry line are non-parallel to the symmetry line. That is, any two conductive vias 615 on the same side of the symmetry line are asymmetric with respect to any one line perpendicular to the symmetry line, so that when the electrical connector 101 and the electrical connector 102 are magnetically mated, the conductive vias 615 can be prevented from being misplaced, that is, each conductive via 615 is prevented from being electrically connected by the electrical connector 101. In this embodiment, four conductive vias 615 are located at the four vertices of one isosceles trapezoid, respectively.

Alternatively, the positive and negative polarities of the electric connection terminals 41 on the same side of the symmetrical line are the same, i.e., the electric connection terminal 41 with positive polarity is on one side of the symmetrical line, and the electric connection terminal 41 with negative polarity is on the other side of the symmetrical line.

Referring to fig. 1 to 3, alternatively, at least one pair of two magnetic members 43 are disposed with opposite magnetic pole directions. Specifically, at least one magnetic member 43 is arranged with a magnetic pole direction opposite to the magnetic pole direction of the other magnetic member 43. I.e. overlooking the front facing from top to bottom, all magnetic members 43 have at least one south pole and one north pole facing the front facing. It will be appreciated that the pole orientation of the electrical connector 102 is adapted to the pole orientation of the electrical connector 101, i.e. the pole orientation of the electrical connector 102 is opposite to the pole orientation of the electrical connector 101. Thus, not only the electric connector 101 and the electric connector 102 can be prevented from being magnetically attracted to be misplaced, but also when the electric connector 101 and the electric connector 102 are magnetically attracted to be aligned, the electric connector 101 can be self-aligned and the center can be magnetically attracted to the center, so that the electric terminals 41 can be correctly electrically connected by the electric connector 101.

Alternatively, the magnetic pole directions of the two magnetic pieces 43 of any pair are set opposite. I.e. the magnetic poles of the two magnetic members 43 located in the same pair are oppositely arranged, so as to improve the accuracy of magnetic attraction of the electric connector 101 and the electric connector 102.

Alternatively, the magnetic pole directions of the magnetic pieces 43 on the same side of the symmetry line are set to be the same. I.e. the magnetic elements 43 with south poles facing the front facing are all located on one side of the line of symmetry and the magnetic elements 43 with north poles facing the front facing are all located on the other side of the line of symmetry.

Optionally, the housing structure 60 further includes a back board 62 detachably covering the opening of the accommodating cavity 64, and the back board 62 is located between the mobile phone and the magnetic member 43. The backing plate 62 is attached to the back of the phone to reduce the overall thickness of the phone and the electrical connector 102.

The bus structure 50 includes a tail plug 52 for plugging in the handset and a flexible circuit board 51 for connecting the tail plug 52 to each of the electrical connection arms 42. The tail plug 52 may be a tail plug 52 for an apple phone or a tail plug 52 for an android phone.

The accommodating cavity 64 is internally provided with a wiring groove 612 for arranging the flexible circuit board 51, each wiring groove 611 is communicated with the wiring groove 612, the flexible circuit board 51 comprises a connecting section 511, a middle section 512 and a tail plug section 513 which are sequentially connected, the connecting section 511 is connected with each electric connecting arm 42, and the tail plug section 513 is connected with the tail plug 52.

Referring to fig. 1 to 3, specifically, the intermediate section 512 is softened, and the intermediate section 512 may be softened by thinning the base layer of the intermediate section 512 or thinning the conductive layer disposed on the intermediate section 512. The bus structure 50 further includes a limiting post 53, and two ends of the limiting post 53 are respectively connected to two side slot walls of the wiring slot 612.

In one embodiment, the limiting post 53 is provided with one, and the middle section 512 is folded in a U shape around the limiting post 53, and the limiting post 53 is located at the bottom of the inner side of the U shape. Thus, the flexible circuit board 51 can have a telescopic function, and the limit posts 53 can protect the flexible circuit board 51 from being broken and disconnected from the terminal assembly 40 during pushing/pulling of the flexible circuit board 51.

Referring to fig. 4, in an example, the bus structure 50 further includes a plurality of electrical connection bars 54, where the number of electrical connection bars 54 is set corresponding to the number of electrical connection arms 42, one end of the electrical connection bars 54 is connected to the corresponding electrical connection arms 42, and the other end of the electrical connection bars 54 is electrically connected to the connection section 511. Optionally, the material of the electrical connection strip 54 is copper, copper has good electrical conductivity, and the electrical connection strip 54 is used to connect the flexible circuit board 51 and the electrical connection terminal 41, so that the length of the flexible circuit board 51 can be reduced, and the electrical connection strip 54 made of copper can carry more current than the flexible circuit board 51 and has the characteristic of low heat productivity compared with the flexible circuit board 51.

The end of the electrical connection strip 54 connected with the flexible circuit board 51 is provided with a groove 541, and the middle section 512 is folded and arranged in the groove 541. The middle section 512 is U-folded and placed in the groove 541, which not only allows the middle section 512 of the flexible circuit board 51 to be U-folded and positioned, but also facilitates reducing the overall thickness of the electrical connector 102.

In one embodiment, two spacing posts 53 are provided at intervals, and the intermediate section 512 is folded around the two spacing posts 53, respectively. Specifically, the middle section 512 is folded in a zigzag manner around the two limiting columns 53, the two limiting columns 53 are respectively located at the inner side portions of the corners of the letter Z, and the middle section 512 can be contracted in the wiring groove 612 by folding the middle section 512, so that the flexible circuit board 51 can obtain a proper telescopic length by pulling/pushing the tail insertion section 513, and the tail plug 52 can be conveniently operated to be plugged into the mobile phone.

Specifically, the flexible circuit board 51 is pulled out to a proper length, then the tail plug 52 is inserted into the mobile phone, and the flexible circuit board 51 correspondingly contracts for a preset plugging distance in the process of insertion, so that the whole assembly with the mobile phone is compact; when the electrical connector 102 is idle, the flexible circuit board 51 can be pushed completely into the wiring groove 612, thereby improving convenience of use and protecting the flexible circuit board 51. It will be appreciated that multiple zig-zag folds, multiple U-shapes, or other folding patterns may be employed to provide the flexible circuit board 51 with a collapsing function.

Further, the cooperation of the folded middle section 512 and the two limiting posts 53 makes the flexible circuit board 51 have anti-pulling function, and the tension and multi-layer winding between the middle section 512 and the limiting posts 53 can also prevent the connection section 511 from being disconnected from the terminal assembly 40.

The bus structure 50 further comprises a reinforcing layer made of a tear-resistant material, the surface of the tail insert section 513 being provided with a reinforcing layer. The reinforcing layer covers the surface of the tail insertion section 513 through a hot pressing process, thereby improving the structural strength of the tail insertion section 513. Thus, not only is the convenience of operation of the tail insertion section 513 improved, but also the flexible circuit board 51 can be smoothly pushed/pulled by operating the tail insertion section 513, so that the flexible circuit board 51 can obtain a proper telescopic length; and because the reinforcing section is made of tearing-resistant materials, the tail insertion section 513 exposed outside can resist tearing, and the service life of the flexible circuit board 51 is prolonged.

Optionally, the material of the reinforcing layer is polyimide (polyimide), and the reinforcing layer ensures that the flexible circuit board has certain flexibility application requirements and also has tearing-resistant toughness.

It will be appreciated that reinforcement layers may be provided on either or both side surfaces of the tail insert section 513.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (17)

1. An electrical connector for mating with an electrical connector device, the electrical connector comprising a bus structure and terminal assemblies, the terminal assemblies being arranged at least two apart, each of the terminal assemblies comprising an electrical connector terminal, an electrical connector arm having elasticity and having one end connected to the electrical connector terminal and the other end electrically connected to the bus structure, and a magnetic member having magnetism and located on one side of the electrical connector terminal, wherein the electrical connector terminal is located between the magnetic member and the electrical connector device, the magnetic member being adapted to receive an external magnetic attraction toward the electrical connector device and to push and electrically connect the electrical connector terminal to the electrical connector device; the electric connector further comprises a shell structure, the shell structure comprises a base, the base is provided with a front surface facing the electric connector and a back surface facing away from the electric connector, the back surface is provided with an accommodating cavity which is in an opening shape and is used for placing the terminal assembly and the bus structure, the electric connector is positioned between the magnetic piece and the front surface, and the front surface is provided with a conductive hole for the electric connector to be electrically connected with each electric connector; the bottom of the accommodating cavity is provided with a wiring groove for placing the terminal assembly, the conductive hole is communicated with the wiring groove, the electric connection terminal is arranged at one end of the wiring groove and covers the conductive hole, the electric connection arm extends to the other end of the wiring groove and is connected with the bus structure, and one end of the magnetic piece is abutted against the electric connection terminal; countersunk grooves are formed in the bottoms of the wiring grooves, the conducting holes are communicated with the countersunk grooves, the electric connection terminals are in cap shapes and are arranged in the countersunk grooves, the electric connection arms are connected with the cap edges of the electric connection terminals, and one ends of the magnetic pieces are located at the concave positions of the electric connection terminals and compress the electric connection terminals in the corresponding countersunk grooves.

2. An electrical connector for mating with an electrical connector device, the electrical connector comprising a bus structure and terminal assemblies, the terminal assemblies being arranged at least two apart, each of the terminal assemblies comprising an electrical connector terminal, an electrical connector arm having elasticity and having one end connected to the electrical connector terminal and the other end electrically connected to the bus structure, and a magnetic member having magnetism and located on one side of the electrical connector terminal, wherein the electrical connector terminal is located between the magnetic member and the electrical connector device, the magnetic member being adapted to receive an external magnetic attraction toward the electrical connector device and to push and electrically connect the electrical connector terminal to the electrical connector device; the electric connector further comprises a shell structure, the shell structure comprises a base, the base is provided with a front surface facing the electric connector and a back surface facing away from the electric connector, the back surface is provided with an accommodating cavity which is in an opening shape and is used for placing the terminal assembly and the bus structure, the electric connector is positioned between the magnetic piece and the front surface, and the front surface is provided with a conductive hole for the electric connector to be electrically connected with each electric connector; the bottom of the accommodating cavity is provided with a wiring groove for placing the terminal assembly, the conductive hole is communicated with the wiring groove, the electric connection terminal is arranged at one end of the wiring groove and covers the conductive hole, the electric connection arm extends to the other end of the wiring groove and is connected with the bus structure, and one end of the magnetic piece is abutted against the electric connection terminal; the bottom of the wiring groove is provided with a countersunk head groove, the conductive hole is communicated with the countersunk head groove, the electric connection terminal is disc-shaped and comprises a disc body arranged in the countersunk head groove, a connecting ring which is positioned in the wiring groove and is connected with the electric connection arm, and a plurality of connecting ribs which are connected with the connecting ring and the disc body, and one end of the magnetic piece pushes the disc body into the corresponding countersunk head groove; the connecting ribs are uniformly arranged along the circumference of the corresponding disc body, and the positions of the groove walls of the countersunk grooves corresponding to the connecting ribs are provided with avoiding grooves for the connecting ribs to pass through.

3. The electrical connector of any one of claims 1-2, wherein: the terminal assemblies are arranged in pairs and at least two pairs are arranged.

4. The electrical connector of claim 3, wherein: at least one pair of the terminal assemblies is configured for data communication.

5. The electrical connector of claim 3, wherein: the two terminal assemblies of any pair are axisymmetric about the same symmetry line.

6. The electrical connector of claim 5, wherein: the connecting line positioned at the center of any two electric connection terminals on the same side of the symmetrical line is arranged in a non-parallel way with the symmetrical line.

7. The electrical connector of claim 5, wherein: the magnetic pole directions of at least one pair of the magnetic pieces are opposite.

8. The electrical connector of claim 7, wherein: the magnetic pole directions of the two magnetic pieces of any pair are opposite.

9. The electrical connector of claim 8, wherein: the magnetic pole directions of the magnetic pieces positioned on the same side of the symmetrical line are identical.

10. The electrical connector of any one of claims 1-2, wherein: the bus structure comprises a tail plug for plugging in external equipment and a flexible circuit board for connecting the tail plug with each electric connecting arm.

11. The electrical connector of claim 10, wherein: the flexible circuit board comprises a connecting section, a middle section and a tail plug section which are sequentially connected, wherein the connecting section is connected with the terminal assembly, and the tail plug section is connected with the tail plug.

12. The electrical connector of claim 11, wherein: the middle section is arranged in a softening mode, and the middle section is arranged in the wiring groove in a folding mode, so that the flexible circuit board can be pushed into/pulled out of the wiring groove.

13. The electrical connector of claim 12, wherein: the bus structure further comprises a limit column, and two ends of the limit column are respectively connected with two side groove walls of the wiring groove; the spacing post interval is provided with two, the interlude is two spacing post is the folding setting of zigzag.

14. The electrical connector of claim 12, wherein: the bus structure further comprises a limit column, and two ends of the limit column are respectively connected with two side groove walls of the wiring groove; the limiting column is provided with one, and the middle section is folded and arranged in a U shape around the limiting column.

15. The electrical connector of claim 14, wherein: the bus structure further comprises a plurality of electric connection bars, the number of the electric connection bars is corresponding to the number of the electric connection arms, one end of each electric connection bar is connected with the corresponding electric connection arm, and the other end of each electric connection bar is electrically connected with the corresponding connection section.

16. The electrical connector of claim 15, wherein: the electric connection strip is connected with one end of the flexible circuit board and is provided with a groove, and the middle section is folded and arranged in the groove.

17. The electrical connector of claim 11, wherein: the bus structure further comprises a reinforcing layer made of a tear-resistant material, the surface of the tail insert section being provided with the reinforcing layer.