TWM467228U - Plug, socket, and its assembly - Google Patents

Description

Plug, socket and combination thereof

The present invention relates to a plug, a socket and a combination thereof, and more particularly to a plug, a socket and a combination thereof capable of transmitting power and signals.

The combination of plugs and sockets typically used to transmit audio signals typically only has a single function of transmitting audio signals. In addition, a combination of a plug and a socket that combines video and audio signal transmission functions can simultaneously transmit video and audio signals, such as those disclosed in U.S. Patent No. 7,736,193.

The plug disclosed in the aforementioned U.S. patent has an outer ring structure compared with the plug for generally transmitting the audio signal, so as to respectively provide a video guiding area and a connecting area on the inner and outer wall surfaces of the outer ring structure, and the socket has corresponding terminals. The electrical connection is made by contacting the video guiding area and the connecting area of the plug respectively. However, the contact portion of the terminal is fixed and has no elasticity, and there is a risk of poor contact.

In addition, the plugs and sockets currently used for transmitting audio signals cannot transmit power at the same time, and how to meet different usage requirements remains to be solved.

Therefore, one of the purposes of the present invention is to provide a kind of A combination of a plug and a socket that transmits power and signals.

Another object of the present invention is to provide a plug that can simultaneously transmit power and signals.

Yet another object of the present invention is to provide a socket that can simultaneously transmit power and signals.

Therefore, the combination of the new plug and the socket comprises: a plug and a socket. The plug includes a base, a power guiding unit and a signal guiding unit. The base has an end face. The power guiding unit protrudes from the end surface of the base, and has an annular insulating wall, a conductive portion and a grounding portion. The conductive portion is disposed on the inner wall surface of the insulating wall and the ground portion is disposed on the insulating portion. The outer wall of the wall. The signal guiding unit is located in a region surrounded by the power guiding unit, has a column shape and protrudes from the power guiding unit at an end surface of the base and protrudes from the power guiding unit. The signal guiding unit has a signal grounding portion formed on an outer circumferential surface thereof, at least one signal guiding portion and an insulating portion adjacent to the end surface, and the insulating portion is opposite to the conductive portion and spaced apart from the signal guiding unit The central axis is retracted to form a yield space, and the signal ground portion and the signal guiding portion are insulated from each other. The socket includes an insulative housing, at least one power grounding terminal, at least one power terminal, a signal grounding terminal, and at least one signal terminal. The insulative housing defines a signal slot and a power supply slot. The signal slot is inserted into the signal guiding unit, and the power slot is inserted into the power guiding unit. The power grounding terminal is disposed on the insulating case and has a first elastic contact portion extending into the power supply slot to correspond to a grounding portion of the power guiding unit of the plug. The power terminal is disposed on the insulating case and has a second elastic contact portion extending into the power supply slot to correspondingly contact the power source of the plug Conducting a conductive portion of the unit, and the second elastic contact portion is located between the conductive portion and the yield space. The signal grounding terminal is disposed on the insulating case and has a third elastic contact portion extending into the signal slot to correspond to the signal grounding portion of the signal guiding unit of the plug. The signal terminal is disposed on the insulating case and has a fourth elastic contact portion extending into the signal slot to correspond to the signal guiding portion of the signal guiding unit contacting the plug.

The combination of the plug and the socket according to the present invention, wherein the socket comprises two power terminals, and the two power terminals are symmetrically disposed on the insulating case.

The combination of the plug and the socket of the present invention, wherein the two power terminals further have a front and rear extending fixing portion and a tail portion, and the second elastic contact portion of each power terminal extends from the front end of the fixing portion and The contact faces are disposed obliquely with the circumferential direction of the power supply slot. The tail portions of the two power terminals are respectively bent obliquely downwardly from the rear end of the fixing portion, and then bent downward to extend straight and the tail portions of the two power terminals are arranged side by side.

The combination of the plug and the socket of the present invention, wherein the two power terminals each have a laterally extending connection portion and is connected to the connection portion of the other power terminal.

The combination of the plug and the socket of the present invention, wherein the socket comprises two power grounding terminals, the two power grounding terminals are symmetrically disposed on the insulating shell, and each has a front and rear extending fixing portion and a tail portion, and each a first elastic contact portion of a power grounding terminal extends from a front end of the fixing portion and a contact surface thereof is obliquely disposed in a circumferential direction of the power supply slot, and the tail portions of the two power supply ground terminals are respectively bent obliquely at a right angle of the fixing portion Extend and bend to extend straight down.

The combination of the plug and the socket of the present invention, wherein the tail portions of the two power terminals are disposed side by side with the tail portions of the two power supply ground terminals and are located between the tail portions of the two power supply ground terminals, and the first elasticity of the two power supply ground terminals The contact portions are respectively disposed opposite to the second elastic contact portions of the two power terminals, and define a plane rectangular coordinate with the axis of the power supply slot as an origin, and the opposite two sets of first elastic contact portions and second elastic contact portions They are located in the first quadrant and the second quadrant and are respectively arranged in a direction that is 45 degrees from the horizontal axis.

The combination of the plug and the socket according to the present invention, wherein the two power supply ground terminals respectively have a laterally extending connection portion and are connected to the connection portion of the other power supply ground terminal.

The combination of the plug and the socket of the present invention, the socket includes two signal terminals, the signal grounding terminal is located between the two power terminals, and the two signal terminals are respectively located at left and right sides of the signal grounding terminal and located at the power terminals Under the power grounding terminal, the signal grounding terminal and the signal terminal respectively have a tail portion extending upward and downward, and the tail portions are arranged in a row in the left and right direction and are arranged in front and rear with the tail portions of the power terminal and the power grounding terminal. arrangement.

The combination of the plug and the socket of the present invention, wherein the insulating case has a body, an inner ring wall and an outer ring wall, and the inner ring wall is formed at a front end of the body at a distance from the outer ring wall, and the outer ring wall The inner ring wall defines the signal slot, and the outer ring wall and the inner ring wall together define the power supply slot, and the signal slot and the power supply slot extend into the body.

The combination of the plug and the socket of the present invention, wherein the signal guiding unit of the plug is an audio signal guiding unit, and the signal grounding terminal and the signal terminal of the socket are respectively an audio signal grounding terminal and an audio signal terminal.

The new type of plug and socket can simultaneously transmit power and (audio) signals to meet different usage requirements. Compared with the general audio plug, the plug of the present invention has a power guiding unit that surrounds the outside, and cannot be inserted into a general audio socket, thereby avoiding user mis-insertion. The arrangement of the socket terminals of the present invention can make the terminal have a high degree of integration, save space, and reduce the overall volume of the socket, and the terminal tails are arranged in two rows for assembly and soldering to the circuit board. Further, the two power terminals connected to each other can conduct heat to each other, and the risk that the power terminal is overheated to make the transmission of the power source unstable can be reduced, and the stability of the electrical connector in the transmission current can be maintained.

100‧‧‧ plug

1‧‧‧Base

11‧‧‧ end face

2‧‧‧Power supply unit

21‧‧‧Insulated wall

22‧‧‧Electrical Department

23‧‧‧ Grounding Department

3‧‧‧Signal Guide Unit

31‧‧‧Insulation

311‧‧‧Let the space

32‧‧‧ Signal Grounding

33‧‧‧Signal Guide

200‧‧‧ socket

4‧‧‧Insulation shell

41‧‧‧Ontology

411‧‧‧ front end

42‧‧‧ Inner Ring Wall

43‧‧‧ outer ring wall

44‧‧‧Signal slot

45‧‧‧Power slot

5‧‧‧Power grounding terminal

51‧‧‧ Fixed Department

52‧‧‧First elastic contact

521‧‧‧Contact surface

53‧‧‧ tail

6‧‧‧Power terminal

61‧‧‧ Fixed Department

62‧‧‧Second elastic contact

621‧‧‧Contact surface

63‧‧‧ tail

7‧‧‧ Signal Ground Terminal

71‧‧‧ Fixed Department

72‧‧‧ Third elastic contact

73‧‧‧ tail

8‧‧‧ Signal Terminal

81‧‧‧ fixed department

82‧‧‧4th Elastic Contact

83‧‧‧ tail

9‧‧‧Shaping shell

91‧‧‧Bounce arm

10‧‧‧ boards

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective view showing a first preferred embodiment of the combination of the present plug and the socket; FIG. 1 is a partial cross-sectional view showing the plug of the first preferred embodiment; FIG. 4 is an exploded perspective view showing the socket of the first preferred embodiment; FIG. 5 is another view of FIG. An angle view; FIG. 6 is a front view showing the end of the socket of the first preferred embodiment FIG. 7 is a rear view showing the terminal arrangement position relationship of the socket of the first preferred embodiment. FIG. 8 is a plan view showing the mating relationship between the plug and the socket of the first preferred embodiment. Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8; Figure 10 is a perspective view showing the state of contact of the plug of the first preferred embodiment with the terminal of the socket, wherein the socket portion only shows the terminal; Figure 11 is a bottom view of Figure 10; Figure 12 is a perspective view showing the state of contact between the power supply terminal of the plug of the first preferred embodiment and the power terminal and the power supply ground terminal of the socket; Figure 13 is a partial cross-sectional view illustrating The contact state of the power guiding unit of the plug of the first preferred embodiment with the power terminal and the power ground terminal of the socket; and FIG. 14 is a partially exploded perspective view showing the second preferred embodiment of the combination of the plug and the socket of the present invention. Example power terminal and power ground terminal.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1 through 5, a first preferred embodiment of the present combination of plug and socket includes a plug 100 and a socket 200.

The plug 100 includes a base 1, a power guiding unit 2 and a signal guiding unit 3. The base 1 has an end face 11. Power supply unit 2 The end surface 11 of the base 1 protrudes from the end surface 11 of the base 1 and has an annular insulating wall 21, a conductive portion 22 and a ground portion 23. The conductive portion 22 is provided on an inner wall surface of the insulating wall 21, and the ground portion 23 is provided on an outer wall surface of the insulating wall 21. The signal guiding unit 3 is located in a region surrounded by the power guiding unit 2, and has a column shape and protrudes from the power guiding unit 2 to protrude from the end surface 11 of the base 1 and is convexer than the power guiding unit 2 Out. The signal guiding unit 3 has an insulating portion 31, a signal grounding portion 32 and a two-signal guiding portion 33 formed on the outer peripheral surface thereof. The insulating portion 31 is opposite to the conductive portion 22 and spaced apart from the central axis C of the signal guiding unit 3 to form a yield space 311. The signal grounding portion 32 and the signal guiding portion 33 are insulated from each other. In this embodiment, the signal guiding unit 3 is an audio signal guiding unit, and the two signal guiding portions 33 are respectively a left channel and a right channel. Of course, if only for mono, only one signal guiding portion 33 is provided. Further, in the present embodiment, the power supply guiding unit 2 is annular, but a non-circular annular shape may be implemented without being limited to the embodiment.

The socket 200 is mounted on a circuit board 10 and includes an insulative housing 4, two power grounding terminals 5, two power terminals 6, a signal grounding terminal 7, a two-signal terminal 8, and a shielding shell 9. The insulating case 4 has a body 41, an inner ring wall 42 and an outer ring wall 43. The inner ring wall 42 is spaced apart from the outer ring wall 43 at the front end 411 of the body 41. The two together define a signal slot 44 and a power slot 45. The inner ring wall 42 defines the signal slot 44. The outer ring wall 43 and the inner ring wall 42 together define the power supply slot 45, and the power supply slot 45 is spaced apart from the signal slot 44, and the power supply slot 45 is located at the periphery of the signal slot 44, and the signal slot 44 and the signal slot 44 Power slot 45 extends to Inside the body 41. The signal slot 44 is inserted into the signal guiding unit 3, and the power slot 45 is inserted into the power guiding unit 2.

The signal grounding terminal 7 is disposed on the insulating case 4 and has a fixing portion 71, a third elastic contact portion 72 and a tail portion 73. The third elastic contact portion 72 extends from the front end of the fixing portion 71 and extends into the signal slot 44 to correspondingly contact the signal grounding portion 32 of the signal guiding unit 3 of the plug 100. The tail portion 73 is bent and extended by the rear end of the fixing portion 71 for soldering to the circuit board 10. The two signal terminals 8 are disposed on the insulating case 4 and have a fixing portion 81, a fourth elastic contact portion 82 and a tail portion 83, respectively. The fourth resilient contact portion 82 extends from the front end of the fixing portion 81 and extends into the signal slot 44 to correspond to the signal guiding portion 33 of the signal guiding unit 3 of the plug 100. The tail portion 83 extends from the rear end of the fixing portion 81 for soldering to the circuit board 10. In this embodiment, the two signal terminals 8 are respectively located on the left and right sides of the signal grounding terminal 7, and the two fourth elastic contact portions 82 are offset back and forth to respectively correspond to the two signal guiding portions 33 of the contact signal guiding unit 3. The number of signal terminals 8 corresponds to the signal guiding portion 33, so there may be only one signal terminal 8. Similarly, the signal ground terminal 7 and the signal terminal 8 of the socket 200 are an audio signal ground terminal and an audio signal terminal, respectively.

Referring to FIG. 6 and FIG. 7 , the two power supply grounding terminals 5 are symmetrically disposed on the insulating case 4 and have a plate-shaped fixing portion 51 extending forward and backward, a first elastic contact portion 52 and a tail portion 53 . The first elastic contact portion 52 extends from the front end of the fixing portion 51 and extends into the power supply slot 45 and is adjacent to the outer ring wall 43. The contact surface 521 is disposed obliquely with the circumferential direction of the power supply slot 45 to correspondingly contact the first elastic contact portion 52. The power supply guiding unit 2 of the plug 100 Grounding portion 23. The tail portions 53 of the two power supply grounding terminals 5 are bent obliquely downward from the rear end of the fixing portion 51 and then bent downward to extend straightly to be soldered to the circuit board 10. The two power terminals 6 are symmetrically disposed on the insulating case 4, and each has a front and rear fixing portion 61, a second elastic contact portion 62, and a tail portion 63. The second elastic contact portion 62 extends from the front end of the fixing portion 61 and extends into the power supply slot 45 and is adjacent to the inner ring wall 42 . The contact surface 621 is disposed obliquely with the circumferential direction of the power supply slot 45 to correspondingly contact the plug 100 . The conductive portion 22 of the power guiding unit 2 is located between the conductive portion 22 and the yield space 311. The tail portions 63 of the two power terminals 6 are bent obliquely downward from the rear end of the fixing portion 61 and then bent downward to extend straight to be soldered to the circuit board 10. The tail portion 63 of the two power terminals 6 is disposed side by side with the tail portion 53 of the two power source ground terminals 5 and between the tail portions 53 of the two power source ground terminals 5.

More specifically, the fixing portion 61 of the two power terminals 6 and the second elastic contact portion 62 connected thereto are respectively inclined in the tangential direction of the power supply slot 45, and the fixing portions 51 of the two power supply ground terminals 5 are connected thereto. The first elastic contact portions 52 are also relatively inclined in the tangential direction of the power supply slot 45, respectively. The first elastic contact portions 52 of the two power supply ground terminals 5 are disposed opposite to the second elastic contact portions 62 of the two power supply terminals 6 respectively. Furthermore, a plane orthogonal coordinate with the axis of the power supply slot 45 as an origin is defined, and the opposite two sets of the first elastic contact portion 52 and the second elastic contact portion 62 are located in the first quadrant I and the second quadrant H, respectively. They are arranged in directions D, D' which are respectively 45 degrees from the horizontal axis X. Thereby, the two sets of power terminals 6 and the power ground terminal 5 can be respectively located on the left and right sides of the signal ground terminal 7, that is, the signal The ground terminal 7 is located between the two power terminals 6, and the two signal terminals 8 are respectively located under the power terminal 6 and the power ground terminal 5, and the signal ground terminals 7 and the tail portions 73 and 83 of the signal terminals 8 are respectively located. The rows are arranged in a row in the left-right direction and are arranged in front and rear rows with the tail portion 63 of the power terminal 6 and the tail portion 53 of the power source ground terminal 5. By this arrangement, the degree of integration of the terminals can be made high, and the occupied space can be saved to reduce the overall volume of the socket 200. Moreover, the terminal tails are arranged in two rows for easy assembly and soldering to the circuit board.

Referring to FIGS. 4 and 5, the shielding shell 9 covers the body 41 of the insulating housing 4 and has a resilient arm 91. The body 41 of the insulating case 4 forms a through hole 412 corresponding to the elastic arm 91 for the elastic arm 91 to penetrate (see FIG. 9) to contact the signal ground terminal 7 to form an electrical connection.

Referring to FIG. 8 to FIG. 13 , when the plug 100 is docked with the socket 200 , the signal guiding unit 3 and the power guiding unit 2 of the plug 100 are respectively inserted into the signal slot 44 and the power slot 45 of the socket 200 to enable the signal guiding unit 3 . The signal grounding portion 32 and the two signal guiding portions 33 are electrically connected to the third elastic contact portion 72 of the signal grounding terminal 7 and the fourth elastic contact portion 82 of the two signal terminals 8 respectively, and the conductive power guiding unit 2 is electrically conductive. The portion 22 and the ground portion 23 are electrically connected to the second elastic contact portion 62 of the power supply terminal 6 and the first elastic contact portion 52 of the power supply ground terminal 5, respectively. Since the contact portion of the terminal has elasticity, it is ensured that the corresponding contact portion on the plug 100 is in stable contact. As shown in FIG. 13, since the insulating portion 31 of the signal guiding unit 3 of the plug 100 is retracted toward the central axis C (see FIG. 3) to form the yield space 311, the second elastic contact portion 62 of the power supply terminal 6 can be provided to contact the power source. The space of the conductive portion 22 of the connection unit 2 is elastically displaceable, and because the insulating portion 31 It does not conduct electricity, and even if it comes into contact with the second elastic contact portion 62 of the power supply terminal 6, a short circuit does not occur, thereby ensuring stability of power supply and signal transmission. In addition, since the plug 100 of the present embodiment has a power guiding unit 2 surrounding the outer side of the general audio plug, it cannot be inserted into a general audio socket, and the user can be prevented from accidentally inserting the plug 100 of the embodiment. The audio jack makes the electronic device (not shown) to which the plug 100 is connected inoperable.

Referring to FIG. 14, the second preferred embodiment of the combination of the plug and the socket of the present invention is substantially the same as the first preferred embodiment. However, in the second preferred embodiment, the two power supply ground terminals 5 each have a lateral direction. The extended connecting portion 54 is connected to the connecting portion 54 of the other power supply ground terminal 5. The two power terminals 6 each have a laterally extending connecting portion 64 and are connected to the connecting portion 64 of the other power terminal 6. In the present embodiment, the connection portion 54 of the two power supply ground terminals 5 is connected between the two fixing portions 51, and the connection portion 64 of the two power supply terminals 6 is connected between the two fixing portions 61. The two power terminals 6 connected to each other can conduct heat to each other, and when one of the power terminals 6 has poor contact so that the contact resistance value increases and a heat generation occurs, the heat energy can be dispersed to the other power terminal 6, so The risk of the power supply terminal 6 being overheated to make the transmission of the power supply unstable can be reduced, and the stability of the electrical connector in the transmission current can be maintained.

In summary, the plug 100 and the socket 200 of the foregoing embodiment can simultaneously transmit power and (audio) signals to meet different usage requirements. The plug 100 of the embodiment has a power guiding unit 2 surrounding the outer side of the general audio plug, and cannot be inserted into a general audio socket, and can be avoided. Free users from inserting. The arrangement of the terminals of the socket 200 of the foregoing embodiment can make the terminal have a high degree of integration, save space, and reduce the overall volume of the socket 200. Moreover, the terminal tails are arranged in two rows for easy assembly and soldering to the circuit board. Further, the two power supply terminals 6 connected to each other can conduct heat to each other, and the risk that the power supply terminal 6 is overheated to make the transmission of the power supply unstable can be reduced, and the stability of the electrical connector in the transmission current can be maintained.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

100‧‧‧ plug

1‧‧‧Base

11‧‧‧ end face

22‧‧‧Electrical Department

23‧‧‧ Grounding Department

31‧‧‧Insulation

311‧‧‧Let the space

32‧‧‧ Signal Grounding

33‧‧‧Signal Guide

5‧‧‧Power grounding terminal

52‧‧‧First elastic contact

6‧‧‧Power terminal

62‧‧‧Second elastic contact

Claims (22)

A combination of a plug and a socket, comprising: a plug, comprising a base having an end surface, a power guiding unit protruding from an end surface of the base, and having an annular insulating wall, a conductive portion and a a grounding portion, the conductive portion is disposed on an inner wall surface of the insulating wall, the grounding portion is disposed on an outer wall surface of the insulating wall, and a signal guiding unit is located in a region surrounded by the power guiding unit, and is columnar and The power guiding unit protrudes from the end surface of the base and protrudes from the power guiding unit. The signal guiding unit has a signal grounding portion formed on the outer circumferential surface thereof, and at least one signal guiding portion. An insulating portion adjacent to the end surface, the insulating portion is opposite to the conductive portion and spaced apart from the central axis of the signal guiding unit to form a seating space, and the signal grounding portion and the signal guiding portion are insulated from each other; The socket includes an insulative housing defining a signal slot and a power slot, the signal slot is inserted into the signal guiding unit, the power slot is inserted into the power guiding unit, and at least one power grounding terminal is disposed at the socket Insulating shell A first resilient contact portion extending into the supply slot to the corresponding a grounding portion of the power guiding unit contacting the plug, at least one power terminal disposed on the insulating case and having a second elastic contact portion extending into the power supply slot to correspond to the conductive portion of the power guiding unit contacting the plug And the second elastic contact portion is located between the conductive portion and the accommodating space, and a signal grounding terminal is disposed on the insulating shell and has a third elastic contact portion extending into the signal slot to correspondingly contact the plug The signal grounding portion of the signal guiding unit and the at least one signal terminal are disposed on the insulating housing and have a fourth elastic contact portion extending into the signal slot to correspond to the signal guiding of the signal guiding unit contacting the plug unit. The combination of the plug and the socket according to claim 1, wherein the socket comprises two power terminals, and the two power terminals are symmetrically disposed on the insulating case. The combination of the plug and the socket according to claim 2, wherein the two power terminals further have a front and rear extending fixing portion and a tail portion, and the second elastic contact portion of each power terminal is extended by the front end of the fixing portion. The tail surface of the two power terminals is obliquely extended by the right end of the fixing portion, and then bent downward to extend straight downward, and the tail portions of the two power terminals are arranged side by side. The combination of the plug and the socket according to claim 2, wherein the two power terminals each have a laterally extending connection portion and is connected to the connection portion of the other power terminal. The combination of the plug and the socket according to claim 3, wherein the socket comprises two power grounding terminals, the two power grounding terminals are symmetrically disposed on the insulating shell, and each has a front and rear extending fixing portion and a tail portion, respectively. And the first elastic contact portion of each of the power supply grounding terminals is extended by the front end of the fixing portion and the contact surface thereof is inclined with the circumferential direction of the power supply slot, and the tail portions of the two power supply grounding terminals are respectively bent at right angles from the rear end of the fixing portion It extends obliquely and then bends to extend straight down. The combination of the plug and the socket according to claim 5, wherein the tail portions of the two power terminals are disposed side by side with the tail portions of the two power supply ground terminals and are located between the tail portions of the two power supply ground terminals, and the two power supply ground terminals are An elastic contact portion is disposed opposite to the second elastic contact portion of the two power terminals, respectively, defining a plane orthogonal coordinate with the axis of the power supply slot as an origin, the opposite two sets of first elastic contact portions and the second elasticity The contact portions are respectively located in the first quadrant and the second quadrant and are respectively arranged in a direction that is 45 degrees from the horizontal axis. The combination of the plug and the socket according to claim 5, wherein the two power supply ground terminals respectively have a laterally extending connection portion and are connected to the connection portion of the other power supply ground terminal. The combination of the plug and the socket according to claim 5, wherein the socket comprises two signal terminals, the signal ground terminal is located between the two power terminals, and the two signal terminals are respectively located at left and right sides of the signal ground terminal Below the power terminals and the power ground terminal, the signal ground terminals and the signal terminals respectively have an upper The tail portions are extended downward, and the tail portions are arranged in a row in the left-right direction and arranged in front and rear rows with the tail portions of the power terminals and the power supply ground terminals. The combination of the plug and the socket according to any one of claims 1 to 8, wherein the insulating case has a body, an inner ring wall and an outer ring wall, and the inner ring wall is spaced apart from the outer ring wall. At the front end of the body, the inner ring wall defines the signal slot, the outer ring wall and the inner ring wall together define the power supply slot, and the signal slot and the power supply slot extend into the body. The combination of the plug and the socket according to any one of claims 1 to 8, wherein the signal guiding unit of the plug is an audio signal guiding unit, and the signal grounding terminal and the signal terminal of the socket are respectively an audio signal grounding terminal and Audio signal terminal. A plug includes: a base having an end surface; a power guiding unit protruding from an end surface of the base and having an annular insulating wall, a conductive portion and a ground portion, the conductive portion being disposed An inner wall surface of the insulating wall is disposed on an outer wall surface of the insulating wall; and a signal guiding unit is located in a region surrounding the power guiding unit, and is columnar and spaced apart from the power guiding unit And protruding from the end surface of the base and protruding from the power guiding unit, the signal guiding unit has a signal grounding portion formed on the outer circumferential surface thereof, at least one signal guiding portion, and a proximity The insulating portion of the end surface is opposite to the conductive portion and is spaced apart from the central axis of the signal guiding unit to form a space for escaping, and the signal grounding portion and the signal guiding portion are insulated from each other. The plug of claim 11, wherein the signal guiding unit is an audio signal guiding unit. A socket includes: an insulating case defining a signal slot and a power slot, the power slot is spaced apart from the signal slot, and the power slot is located at a periphery of the signal slot; at least one power ground terminal is disposed in the insulating case The first elastic contact portion extends into the power supply slot; the at least one power supply terminal is disposed on the insulating case and has a second elastic contact portion extending into the power supply slot; a signal grounding terminal is disposed on the insulating case And a third elastic contact portion extending into the signal slot; and at least one signal terminal disposed on the insulating case and having a fourth elastic contact portion extending into the signal slot. The socket according to claim 13, comprising two power terminals, wherein the two power terminals are symmetrically disposed on the insulating case. The socket of claim 14, wherein the two power terminals further have a front and rear fixing portion and a tail portion, and the second elastic contact portion of each power terminal extends from the front end of the fixing portion and the contact surface thereof Tilting with the wraparound direction of the power supply slot, the second The tail portions of the power terminals are respectively bent obliquely downward from the rear end of the fixing portion and then bent downward to extend straight downwards, and the tail portions of the two power terminals are arranged side by side. The socket of claim 14, wherein the two power terminals each have a laterally extending connection portion connected to the connection portion of the other power terminal. The socket of claim 15, comprising two power supply grounding terminals, wherein the two power grounding terminals are symmetrically disposed on the insulating housing, and further have a front and rear extending fixing portion and a tail portion, and each of the power grounding terminals The first elastic contact portion extends from the front end of the fixing portion and the contact surface thereof is obliquely disposed in the circumferential direction of the power supply slot. The tail portions of the two power supply ground terminals are respectively bent obliquely downwardly from the rear end of the fixing portion and then bent downward. Extends in a straight line. The socket of claim 17, wherein the tail portions of the two power terminals are disposed side by side with the tail portions of the two power supply ground terminals and are located between the tail portions of the two power supply ground terminals, and the first elastic contact portion of the two power supply ground terminals The two elastic contact portions of the two power terminals are opposite to each other, and define a plane rectangular coordinate with the axial center of the power supply slot as an origin. The two opposite first elastic contact portions and the second elastic contact portion are respectively located. The first quadrant and the second quadrant are respectively arranged in a direction that is 45 degrees from the horizontal axis. The socket of claim 17, wherein the two power supply ground terminals respectively have a laterally extending connection portion connected to the connection portion of the other power supply ground terminal. The socket of claim 17, comprising two signal terminals, wherein the signal grounding terminal is located between the two power terminals, and the two signal terminals are respectively located at left and right sides of the signal grounding terminal and located at the power terminal and the power grounding terminal. In the lower part, the signal grounding terminal and the signal terminal respectively have a tail portion extending upward and downward, and the tail portions are arranged in a row in the left-right direction and arranged in front and rear rows with the tail portions of the power terminal and the power grounding terminal. The socket of any one of claims 13 to 20, wherein the insulating case has a body, an inner ring wall and an outer ring wall, the inner ring wall being formed on the body at a distance from the outer ring wall a front end, and the inner ring wall defines the signal slot, the outer ring wall and the inner ring wall together define the power supply slot, and the signal slot and the power supply slot extend into the body. The socket of any one of claims 13 to 20, wherein the signal ground terminal and the signal terminal are respectively an audio signal ground terminal and an audio signal terminal.