TWI434474B - Connector - Google Patents

Description

Connector

The present invention relates to a connector, and more particularly to a connector for optical transmission.

The Universal Serial Bus (USB) interface is a standard input/output interface that has been widely used in the design of many electronic devices. In 1994, seven world-renowned computer and communication companies, including Compaq, Digital, IBM, Microsoft, NEC, and Northern Telecom, jointly established the USB Association (USB-IF) to initially establish a USB interface specification. So far, the USB Association has released versions 1.0, 1.1, 2.0 and 3.0, and the USB transfer rate has gradually improved. With the development of the electronics industry and the advancement of technology, people continue to strive to increase the transmission rate of USB. Currently, there is a USB connector that can transmit optical signals to further increase the transmission rate. The connector usually includes an insulating body and a fixed a conductive terminal on the insulative housing, a fiber optic component for optical transmission, and a shield housing that is wrapped around the outer side of the insulative housing. However, due to the miniaturization of the motherboard, the same connector can be plugged into different mating plugs, and the height and insertion depth of different mating plugs are also different. For the purpose of ensuring the positioning accuracy of the docking fiber plug, the docking plug of the USB standard is lower in height than the USB standard mating plug, and the insertion depth is deep. The positioning accuracy of the USB standard mating plug in the up and down direction is completed by the shielding shell. Because the fiber plug is lower in height than the USB standard mating plug, the gap between the fiber plug and the shielding shell is relatively large while ensuring the positioning accuracy of the USB standard mating plug, and the fiber plug will be in the up and down direction. The sloshing occurs, and if it is arranged, the positioning accuracy of the optical fiber plug cannot meet certain requirements.

Therefore, it is necessary to modify the conventional connector to overcome the above drawbacks.

In view of the above, the purpose of this creation is to provide a connector that can improve the positioning accuracy of the fiber plug.

In order to achieve the above object, the present invention adopts the following technical solution: a connector comprising an insulative housing, a plurality of conductive terminals mounted on the insulative housing, a fiber optic component disposed on the insulative housing, and a cover of the outer side of the insulative housing The shielding body includes a mating surface at the front end, an accommodating space recessed from the rear surface of the plugging surface, and a tongue plate located in the accommodating space, the conductive terminal including a contact portion disposed on the tongue plate And extending a tail portion of the insulative housing, the connector including a step portion at the rear end and extending into the accommodating space to prevent the butt fiber plug from moving upward.

Compared with the prior art, the authoring connector is provided with a step that restricts the upward movement of the fiber plug, and if it is arranged, the depth of insertion of the USB 2.0 plug, the USB 3.0 plug, and the fiber plug is different, without affecting the USB2. When the .0 plug and the USB3.0 plug are inserted, the positioning accuracy of the optical fiber plug is improved.

100‧‧‧Connector

200‧‧‧USB 3.0 plug

300‧‧‧Optical fiber plug

1‧‧‧Insulating body

10‧‧‧ accommodating space

11‧‧‧ Main body

110‧‧‧ upper surface

111‧‧‧ front end

112‧‧‧ rear end face

113‧‧‧Installation slot

1130‧‧‧ card recess

114‧‧‧ docking holes

115‧‧‧ containment chamber

1151‧‧‧ card slot

12‧‧‧ side

13‧‧‧ tongue plate

1301‧‧‧ first side

1302‧‧‧ second side

131‧‧‧First terminal slot

132‧‧‧Second terminal slot

133‧‧‧ third terminal slot

14‧‧‧Interface

15‧‧‧Steps

151‧‧‧ upper surface

152‧‧‧ front surface

16‧‧‧First limit surface

17‧‧‧second limit surface

18‧‧‧ third limit surface

2‧‧‧Electrical terminals

21‧‧‧First terminal group

210‧‧‧First terminal

2101‧‧‧Contacts

2102, 2202, 2302‧‧ ‧ tail

22‧‧‧Second terminal group

220‧‧‧second terminal

2201, 2301‧ ‧ contact

23‧‧‧ Third terminal group

230‧‧‧ third terminal

3‧‧‧Fiber optic components

31‧‧‧ base

32‧‧‧Cars Department

320‧‧‧Wedge card holder

321‧‧‧Resistance

33‧‧‧Docking Department

330‧‧‧Department

331‧‧‧ lens

332‧‧‧ docking post

4‧‧‧Shrap

41‧‧‧ flat retaining section

410‧‧‧Trap

42‧‧‧Clamping Department

43‧‧‧Installation Department

5‧‧‧ Positioning Block

51‧‧‧First fixed slot

52‧‧‧Second fixing slot

53‧‧‧3rd fixing slot

6‧‧‧Shaded housing

61‧‧‧ top wall

611‧‧‧First pressure shrapnel

62‧‧‧ bottom wall

621‧‧‧Second pressure shrapnel

63‧‧‧ side wall

The first picture is a three-dimensional combination of the author of the author.

The second figure is a three-dimensional combination of the other angles of the first figure.

The third figure is a partial perspective combination view of the authoring connector separating the shielding shell.

The fourth figure is a partial perspective combination of the other angle of the third figure.

The fifth figure is a partial exploded view of the present authoring connector.

The sixth figure is a perspective view of the insulative body in the present connector.

The seventh drawing is a cross-sectional view taken along line VII-VII in the first drawing.

The eighth figure is an exploded perspective view of the authoring connector.

The ninth drawing is an exploded perspective view of another angle of the eighth figure.

Figure 10 is a partial cross-sectional view of the fiber optic plug mated with the present authoring connector.

Figure 11 is a partial cross-sectional view of the USB 3.0 plug in contact with the authoring connector.

The twelfth figure is a perspective view of the present invention in which the shielded housing is removed.

Referring to the first to twelfth figures, the connector 100 of the present invention can be used to selectively plug in a plurality of docking plugs, such as a USB 2.0 standard USB 2.0 plug (not shown), and a USB 3.0 standard. The USB 3.0 plug 200, the E-SATA standard E-SATA plug (not shown), and the optical fiber plug 300 for optical transmission. The connector 100 includes an insulative housing 1, a plurality of conductive terminals 2 mounted on the insulative housing 1, a fiber optic component 3, a pair of elastic pieces 4 for fixing the mating plug, a positioning seat 5 for fixing the conductive terminal 2, and a covering The shielding case 6 is outside the insulating body 1.

Referring to the third to fourth and seventh to eighth embodiments, the insulative housing 1 includes a main body portion 11 at the rear end, a mating surface 14 at the front end, and a recessed rearward from the mating surface 14. The accommodating space 10 is located in front of the main body portion 11. The main body portion 11 includes an upper surface 110 at an upper end, a front end surface 111 at the front end, and a rear end surface 112 at the rear end opposite to the front end surface 111. The insulative housing 1 is provided with a step portion 15 extending horizontally forward from the front end surface 111. The step portion 15 is located above the accommodating space 10 for restricting the upward movement of the optical fiber plug 300. The step portion 15 is provided with the main body. The upper surface 110 of the portion 11 is coplanar with the upper surface 151 and the front surface 152 at the front end. Now, because the connector 100 needs to selectively plug in the USB 2.0 plug, the USB 3.0 plug 200, the E-SATA plug, and the optical fiber plug 300, the height dimensions of the plugs and the depth of insertion are not the same, wherein the The fiber optic plug 300 is lower in height than the USB 2.0 plug and the USB 3.0 plug 200, the fiber The plug 300 is deeper than the USB 2.0 plug and the USB 3.0 plug 200 in insertion depth. Referring to FIG. 12 , the front end of the main body portion 11 is provided with a first limiting surface 16 , and the first limiting surface 16 is pressed against the optical fiber plug 300 such that the front end of the optical fiber plug 300 is located at the step portion 15 . Immediately below, at this time, after the optical fiber plug 300 is pressed against the first limiting surface 16, the optical fiber plug 300 cannot be inserted backward, and the first limiting surface 16 is provided to define the insertion of the optical fiber plug 300. The position ensures the positioning accuracy of the optical fiber plug 300. In the present embodiment, the gap between the front end of the optical fiber plug 300 inserted in position and the step portion 15 is small, and the front end of the optical fiber plug 300 is pressed upward against the step portion 15 with almost no gap. Regardless of whether the front end of the optical fiber plug 300 and the step portion 15 are pressed against each other or have a small gap, the optical fiber plug 300 does not sway in the up and down direction, which improves the fiber plug 300 when mated with the optical fiber component 3. The matching precision ensures that the optical signal of the optical fiber plug 300 is on the same line as the optical signal of the optical fiber component 3, thereby preventing the loss of the optical signal and ensuring the quality of the optical signal transmission.

In this embodiment, the positioning accuracy of the USB 2.0 plug and the USB 3.0 plug 200 in the up and down direction is completed by the shielding case 6. The USB 2.0 plug and the USB 3.0 plug 200 are not in the up and down direction by the shielding case 6. It will shake and ensure the positioning accuracy of USB2.0 plug and USB3.0 plug 200. Moreover, since the optical fiber plug 300 is lower in height than the USB 2.0 plug and the USB 3.0 plug 200, the gap formed between the optical fiber plug 300 and the shielding case 6 is relatively large. In this embodiment, by providing one The step portion 15 fills the gap so that the optical fiber plug 300 does not sway in the up and down direction, and if it is arranged, it facilitates the positioning of the optical fiber plug 300, and uses the USB 2.0 plug, the USB 3.0 plug 200, and the optical fiber plug 300 to insert the depth. The difference is that the positioning accuracy of the optical fiber plug 300 is improved while not affecting the insertion of the USB 2.0 plug and the USB 3.0 plug 200. The front end of the inserted USB 2.0 plug is located in front of the step portion 15 and the USB 2.0 plug is provided with an upper surface higher than the step portion 15, the USB 2.0 plug inserted in place and the front surface 152 of the step portion 15 There is a gap between them. The front end of the inserted USB 3.0 plug 200 is located in front of the step portion 15 and the USB 3.0 plug is provided with an upper surface higher than the step portion 15, and the USB 3.0 plug and the step portion 15 inserted therein are inserted. There is a gap between the front surfaces 152. The front end of the inserted E-SATA plug is located below the step portion 15 and spaced apart from the step portion 15. The front end of the optical fiber plug 300 inserted into position is located directly below the step portion 15. In this embodiment, the step portion 15 is disposed on the insulative housing 1 . Of course, in other embodiments, the step portion 15 may be directly formed on the upper surface of the shielding housing 6 as long as the step portion 15 is formed. The step portion 15 can fill the gap formed between the optical fiber plug 300 and the shielding case 6, that is, the purpose of the present invention can be achieved.

The insulative housing 1 further includes a horizontally disposed flat tongue 13 extending integrally into the accommodating space 10 from the central portion of the front end surface 111 of the main body portion 11 and extending integrally from both side ends of the main body portion 11 The side portion 12 on both sides of the side edge of the tongue plate 13 , the mounting groove 113 recessed forward from the rear end surface 112 of the main body portion 11 , and the mating hole 114 recessed from the mounting groove 113 to communicate with the accommodating space 10 The holding recess 1130 recessed from the mounting groove 113 to both sides and the receiving cavity 115 located below the mounting groove 113. A retaining groove 1151 for positioning the positioning base 5 is disposed at a rear end of the receiving cavity 115. The tongue plate 13 is provided with a first side surface 1301 disposed above and below and a second side surface 1302 located opposite to the first side surface 1301. The first side surface 1301 is provided with four downwardly recessed first terminal slots 131 extending in the front-rear direction and laterally arranged in the left-right direction, and five rectangular second terminal slots 132 located in front of the first terminal slots 131; The second side surface 1302 is provided with seven upwardly recessed third terminal grooves 133 extending in the front-rear direction and laterally arranged in the left-right direction. The docking holes 114 are rectangular and are arranged to be recessed on the main body portion 11 on the left and right sides. The two mating holes 114 are located above the plane of the first side surface 1301 of the tongue plate 13. Referring to FIG. 12, the tongue plate 13 includes a USB 2.0 plug or a USB 3.0 plug 200 that is pressed against the front end of the step portion 15 of the USB 2.0 plug or the USB 3.0 plug 200. a second limiting surface 17 and a third portion located behind the second limiting surface 17 and located below the second limiting surface 17 are pressed against the E-SATA plug such that the front end of the E-SATA plug is located below the step portion 15 Limit surface 18. The second limiting surface 17 is located in front of the first limiting surface 16 , and the third limiting surface 18 is located between the first limiting surface 16 . After the USB 2.0 plug or the USB 3.0 plug 200 is inserted into the position, the second limiting surface 17 is pressed against the USB 2.0 plug or the USB 3.0 plug 200 to insert the USB 2.0 plug or the USB 3.0 plug 200 into place and the front end of the USB 2.0 plug or the USB 3.0 plug 200 is located above the front portion of the step portion 15, At this time, after the USB2.0 plug or the USB3.0 plug 200 is pressed against the second limiting surface 17, the USB 2.0 plug cannot be inserted backward, and the second limiting surface 17 is provided to define the USB2. The insertion position of the 0 plug or the USB 3.0 plug 200 ensures the positioning accuracy of the USB 2.0 plug or the USB 3.0 plug 200. The third limiting surface 18 is pressed against the E-SATA plug to insert the E-SATA plug into position and the front end of the E-SATA plug is located below the step portion 15. At this time, the E-SATA plug and the third After the limiting surface 18 is pressed, the E-SATA plug cannot be inserted backwards. By setting the third limiting surface 18 to define the insertion position of the E-SATA plug, the positioning accuracy of the E-SATA plug is ensured. The extension length of the step portion 15 is determined according to the situation after the USB 2.0 plug or the USB 3.0 plug 200 is inserted, and the weight is ensured that the step portion 15 does not affect the normal insertion of the USB 2.0 plug or the USB 3.0 plug 200. After the E-SATA plug is inserted, it is located in the space below the accommodating space 10. Therefore, the extension length of the step portion 15 does not actually affect the insertion of the E-SATA plug.

Referring to the eighth and ninth diagrams, the conductive terminal 3 includes a first terminal set 21 mounted in the first terminal slot 131 of the first side 1301 of the tongue 13 and mounted on the first side of the tongue 13 The second terminal group 22 in the second terminal slot 132 of the 1301 and the third terminal group 23 mounted in the third terminal slot 133 of the second side 1302 of the tongue plate 13. The first terminal group 21 is a USB 2.0 terminal, and the first terminal group 21 conforms to the USB 2.0 transmission standard and includes four first terminals 210 having protruding elastic portions 2101. The first terminal 210 also includes a tail portion 2102 that is vertically disposed. The first terminal group 21 and the second terminal group 22 together form a USB 3.0 terminal, and collectively conform to the USB 3.0 transmission standard. The second terminal group 22 includes five second terminals 220 having flat contact portions 2201. The second terminal 220 further includes a tail portion 2202 that is vertically disposed. The contact portion 2101 is received in the first terminal slot 131 and protrudes upwardly from the first side surface 1301. The contact portion 2201 is exposed in the second terminal slot 132. The contact portion 2201 is closer to the tongue than the contact portion 2101. The front end of the board 13. The third terminal group 23 includes seven third terminals 230 having contact portions 2301. The first The three terminals 230 also include a tail portion 2302 that is vertically disposed. The third terminal 230 is an E-SATA terminal for electrically connecting to the E-SATA docking plug. The tongue plate 13 can be selectively connected to the USB 2.0 plug, the USB 3.0 plug 200 and the E-SATA plug. In other embodiments, the second terminal group 22 and the third terminal group 23 can respectively be respectively connected. The first side surface 1301 and the second side surface 1302 of the tongue plate 13 are embedded.

Referring to the third to fifth figures, the optical fiber component 3 is exposed to the accommodating space 10 and located at the side of the tongue plate 13, and the optical fiber component 3 is located above the tongue plate 13 in the up and down direction, The optical fiber element 3 is located behind the tongue 13 in the front-rear direction. The optical fiber component 3 includes a base portion 31 housed in the mounting groove 113, a pair of latching portions 32 extending rearward from both sides of the base portion 31 and elastically deformable inwardly, and extending from the front end of the base portion 31 into the main body portion 11 The abutting portion 33 provided at two intervals in the hole 114, the optical fiber (not shown) attached to the base portion 31, and the propelling portion 34 for propelling the propulsion device (not shown) projecting rearward from the rear end of the base portion 31 . An optical fiber hole (not labeled) for receiving the optical fiber is provided in the base portion 31 and the abutting portion 33. The outer side of each of the holding portions 32 is provided with a wedge-shaped holding block 320 which protrudes outward and an abutting portion 321 which is convexly extended from the free end of the holding portion 32. The wedge-shaped holding blocks 320 on the two sides of the pair of latching portions 32 are configured to be engaged with the latching recesses 1130 on both sides of the mounting slot 113, so as to prevent the optical fiber component 3 from being retracted from the mounting slot 113; The enlarged abutting portion 321 is located on the rear side of the mounting groove 113, and the rear end surface 112 of the main body portion 11 holds the abutting portion 321 rearward. By the arrangement, the optical fiber component 3 can be positioned in the mounting groove 113 in the front-rear direction. When the pair of latching portions 32 are pressed inward, the latching portions 32 are elastically deformed inward. At this time, the wedge-shaped latching blocks 320 can be separated from the latching recesses 1130 on both sides of the mounting slot 113. The arrangement and disassembly of the optical fiber component 3 can be facilitated by the arrangement. Each of the abutting portions 33 is provided with a table portion 330 received in the mating hole 114, a docking post 332 protruding from the table portion 330 into the accommodating space 10 for positioning the mating plug, and mounting on the side of the docking pole 332 The lens 331 for collecting the optical signals is arranged in the mesa portion 330 and exposed to the left and right sides of the accommodating space 10. The lens 331 is mounted on the foremost end of the optical fiber hole for interfacing with the optical fiber in the optical fiber hole. The two abutting portions 33 are left and right The arrangement is said to be such that the four lenses 331 are located between the two docking posts 332. The lens 331 is located above the contact portions 2101, 2201, and 2301 of all the conductive terminals 2 in the up-and-down direction, and is located behind the contact portions 2101, 2201, and 2301 of all the conductive terminals 2 in the front-rear direction. The lens 331 is located above the tail portions 2102, 2202, 2302 of all the conductive terminals 2 in the up and down direction, and is located in front of the tail portions 2102, 2202, 2302 of all the conductive terminals 2 in the front and rear direction. The lens 331 is flush with the front end surface 111 of the main body portion 11 or behind the front end surface 111 of the main body portion 11, and the docking post 332 protrudes from the front end surface 111 of the main body portion 11 for insertion. Position the docking plug. The connector 100 can be selectively inserted into the optical fiber plug 300. The optical fiber plug 300 can be fixedly coupled to the two docking posts 332. The lens 331 can be optically transmitted with the optical fiber plug 300. The front surface 152 of the step portion 15 is located on the front upper side of the docking post 332. By arranging, the other plugs are prevented from being mis-inserted and the docking pole 332 is damaged.

Referring to FIGS. 8 to 9 , the pair of elastic pieces 4 are symmetrically mounted on the both side portions 12 . The elastic piece 4 includes a flat-shaped holding portion 41, and a protruding clamping portion 42 extending forward from the flat-shaped holding portion 41 and protruding into the accommodating space 10 is vertically bent outward from the flat-shaped holding portion 41. Then, the mounting portion 43 which is vertically bent and extended is further rotated forward. The central portion of the flat-shaped holding portion 41 protrudes toward one side to extend a tab 410 for holding with the side portion 12. The flat retaining portion 41 can be stably held in the side portion 12 by the arrangement. The clamping portion 42 can clamp the two sides of the mating plug inwardly, and if it is arranged, the mating plug and the connector 100 can be firmly inserted. The hook-shaped mounting portion 43 extends rearwardly from the side portion 12 and is pivoted to overlap with the outer shielding case 6. If the arrangement is arranged, the mating plug can be grounded.

Referring to the eighth and ninth drawings, the positioning base 5 is mounted in the receiving cavity 115. The front end of the positioning base 5 is provided with a plurality of third fixing slots extending in the vertical direction and arranged in the horizontal direction. The third fixing groove 53 is configured to cooperate with the holding groove 1151 at the rear end of the receiving cavity 115 to jointly clamp the tail portion 2302 of the third terminal group 23 . The positioning seat 5 is further provided with two rows of front and rear a first fixing groove 51 and a second fixing groove 52 extending in a horizontal direction and arranged in a horizontal direction, the first fixing groove 51 and the second fixing groove 52 respectively for receiving and fixing the first terminal group 21 and the second terminal The tail portions 2102, 2202 of the terminal set 22.

Referring to the first to sixth figures, the shielding case 6 has a hollow tubular shape having a substantially rectangular parallelepiped shape. The shielding case 6 is wrapped around the outer side of the tongue plate 13 to form the accommodating space 10 for accommodating the mating plug. The shielding case 6 includes a top wall 61 at the upper end, a bottom wall 62 at the lower end, and a connection. The top wall 61 and the two side walls 63 of the bottom wall 62. The top wall 61 is provided with a first pressing elastic piece 611 protruding into the accommodating space 10 for pressing against the mating plug. The bottom wall 62 is provided with a second pressing elastic piece 621 protruding into the accommodating space 10 for pressing against the mating plug. The top wall 61 is pressed against the step portion 15. The step portion 15 is pressed against the front end of the optical fiber plug 300. The first pressing elastic piece 611 is pressed against the rear end of the optical fiber plug 300, and if it is arranged, the step portion 15 and the first pressing elastic piece 611 respectively The fiber optic plugs 300 are pressed against different positions in the front-rear direction to prevent the fiber plug 300 from being shaken when inserted, thereby ensuring the stability of the fiber plug 300 positioning.

The artificial connector 100 fills the gap formed between the optical fiber plug 300 and the shielding case 6 by providing a step portion 15, so that the optical fiber plug 300 does not sway in the up and down direction, and the optical fiber plug is beneficial to the optical fiber plug. 300 positioning, using USB2.0 plug, USB3.0 plug 200 and fiber plug 300 insertion depth, without affecting the USB2.0 plug and USB3.0 plug 200 insertion, improve the positioning accuracy of the fiber plug 300 .

The authoring connector 100 skillfully sets various signal transmission components (such as terminals and optical fiber components) on the insulative housing 1 so that the connector 100 can be selectively plugged into the USB 2.0 plug, the USB 3.0 plug 200, and the E-SATA plug. And the optical fiber plug 300; first, the volume of the connector 100 is saved, and secondly, the function of the connector 100 is enhanced.

The authoring connector 100 defines the insertion position of the optical fiber plug 300 by providing the first limiting surface 16 and, in turn, the fiber optic plug by the different positions of the step portion 15 and the first pressing elastic piece 611 from the front-rear direction. The 300 phase is pressed to prevent the swaying of the optical fiber plug 300 when it is inserted, and the matching precision of the optical fiber plug 300 and the optical fiber component 3 is improved, and the optical signal of the optical fiber plug 300 and the optical signal of the optical fiber component 3 are ensured to be on the same straight line, thereby preventing The loss of optical signals ensures the quality of optical signal transmission.

The authoring connector 100 defines the insertion position of the USB 2.0 plug or the USB 3.0 plug 200 by setting the second limiting surface 17, thereby ensuring the insertion accuracy of the USB 2.0 plug or the USB 3.0 plug 200. The extension length of the step portion 15 is determined according to the situation after the USB 2.0 plug or the USB 3.0 plug 200 is inserted, and the weight is ensured that the step portion 15 does not affect the normal insertion of the USB 2.0 plug or the USB 3.0 plug 200. .

The authoring connector 100 defines the insertion position of the E-SATA plug by setting the third limiting surface 18, thereby ensuring the insertion accuracy of the E-SATA plug.

In summary, the creation meets the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those who are familiar with the skill of the present invention are equivalent to the equivalent modifications or changes made by the spirit of the present creation. It should be covered by the following patent application.

15‧‧‧Steps

151‧‧‧ upper surface

2101‧‧‧Contacts

2102, 2202, 2302‧‧ ‧ tail

2201, 2301‧ ‧ contact

6‧‧‧Shaded housing

Claims (10)

The connector is provided with a socket for receiving the docking socket, and includes: an insulating body, comprising: a plugging surface at the front end; an accommodating space recessed from the rear surface of the plugging surface; and a tongue plate located in the accommodating space; The plurality of conductive terminals are mounted on the insulative housing, the conductive terminal includes a contact portion disposed on the tongue plate and a tail portion extending from the insulative housing; the optical fiber component is disposed on the insulative housing; and the shielding shell is covered The outer side of the insulative housing, wherein the connector includes a step portion at the rear end and extending forward into the accommodating space to prevent upward movement of the mating optical fiber plug, and the optical fiber component is further provided with a forward protruding and receiving A docking pole for positioning the fiber plug in the space, the step portion is located above the docking pole and the front surface of the step portion is located in front of the docking pole. The electrical connector of claim 1, wherein the shielding housing comprises a top wall at an upper end, the step portion being pressed against the top wall. The electrical connector of claim 2, wherein the top wall is provided with a first pressing elastic piece protruding into the accommodating space for pressing against the mating plug, the step portion and the A pressing elastic piece is pressed against the mating optical fiber plug from different positions in the front-rear direction. The connector of claim 1, wherein the insulative housing is provided with a main body portion at a rear side of the accommodating space, the main body portion is provided with a front end surface at the front end, and the step portion is front facing from the front end Horizontal extension is formed. The connector of claim 2, wherein the step portion is located at a rear end of the contact portion and at a front end of the tail portion, and the insulating body is provided with a first limiting surface at the rear end, the first limit The plane faces against the fiber optic plug to insert the fiber optic plug into position and the front end of the fiber optic plug is located directly below the stepped portion, the first limiting surface being in the same plane as the front end face. The connector of claim 5, wherein the tongue plate is provided with a first side, the conductive terminal comprises a first terminal set mounted on the first side, and a contact portion of the first terminal set The contact portion of the first terminal group protrudes from the first side surface and protrudes into the accommodating space, the first terminal group is a USB2.0 terminal, and the connector is pluggable. a standard USB 2.0 plug, the insulative housing is provided with a second limiting surface at the front end, and the second limiting surface is pressed against the USB 2.0 plug to insert the USB 2.0 plug into position and enable the USB 2.0 The front end of the plug is located in front of the front portion of the step portion, the second limiting surface is located in front of the first limiting surface, and the USB 2.0 plug is not in contact with the step portion. The connector of claim 6, wherein the conductive terminal comprises a second terminal group disposed on the first side, the contact portion of the second terminal group is a flat plate, and the second terminal group The contact portion is located at the front end of the contact portion of the first terminal group, and the first terminal group and the second terminal combination constitute a USB3.0 terminal, and the connector can be plugged into a standard USB 3.0 plug, the second limit The plane is pressed against the USB 3.0 plug so that the front end of the USB 3.0 plug is located in front of the step portion, and the USB 3.0 plug does not contact the step portion. The connector of claim 6, wherein the tongue plate is provided with a second side opposite to the first side, and the conductive terminal comprises a third terminal set disposed on the second side, the The three terminal group is an E-SATA terminal, the contact portion of the third terminal group is a flat plate, the connector can be plugged into an E-SATA plug, and the insulating body is disposed at a first limiting surface and a second limit a third limiting surface between the planes, the third limiting surface is pressed against the E-SATA plug to insert the E-SATA plug into position and the front end of the E-SATA plug is located below the step, the E- The SATA plug does not touch the step. The connector of claim 1, wherein the optical fiber component comprises a base mounted on the insulative housing and an abutting portion projecting forwardly from the base, wherein the optical fiber is mounted in the base, and the mating portion is provided a lens for docking an optical fiber, the lens being located above the contact portion of the conductive terminal in the up-and-down direction and at the rear of the contact portion of the conductive terminal in the front-rear direction The lens is located above the tail of the conductive terminal in the up-and-down direction and in front of the tail of the conductive terminal in the front-rear direction. The connector of claim 9, wherein the docking post is located outside the lens.