CN206864692U

CN206864692U - Sheath, extension facility, data wire and its connector

Info

Publication number: CN206864692U
Application number: CN201720355408.XU
Authority: CN
Inventors: 雷灿伙; 晏升福; 张晓辉
Original assignee: Shenzhen Romoss Technology Co Ltd
Current assignee: Shenzhen Romoss Technology Co Ltd
Priority date: 2017-04-06
Filing date: 2017-04-06
Publication date: 2018-01-09
Anticipated expiration: 2027-04-06

Abstract

It the utility model is related to a kind of sheath, extension facility, data wire and its connector.The connector of above-mentioned sheath is used to be connected to mobile device, and connector includes circuit board, lead, terminal and glue core；The circuit board is provided with multiple pole pieces；Lead is welded on circuit board, and is electrically connected with pole piece；The number of terminal is multiple, and terminal is corresponded with pole piece and electrically connected；Glue core coating circuit plate, the side of terminal and one end of lead, glue core are used to be plugged in mobile device, terminal is electrically connected with mobile device；Glue core has flexibility.Above-mentioned connector can be pulled out with oblique cutting on mobile device, the site error between by connector and mobile device influenceed it is smaller so that the ease of use of connector is preferable；The structure of above-mentioned connector is relatively simple, easy to manufacture processing, makes the cost of connector relatively low.

Description

Sheath, expansion equipment, data line and connector thereof

Technical Field

The utility model relates to a technical field of mobile device especially relates to a sheath, extension equipment, data line and connector thereof.

Background

The traditional connector comprises an iron shell, a conductive terminal and a rubber core, wherein the conductive terminal is inserted on the rubber core, the iron shell is sleeved on the periphery of the rubber core, and the connector is complex in structure and high in cost. When the connector and the mobile device have position deviation, the connector cannot be obliquely inserted into or pulled out of the mobile device, so that the connector is poor in use convenience.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a flexible connector capable of being obliquely inserted and pulled out, which has a simple structure and a low cost, and is used for solving the problems of poor convenience, complex structure and high cost of the connector.

Furthermore, the utility model discloses still provide a convenient to use's data line.

The utility model also provides a convenient to use's sheath and expand equipment.

A connector for connecting to a mobile device, the connector comprising:

the circuit board is provided with a plurality of pole pieces;

the lead is welded on the circuit board and is electrically connected with the pole piece;

the number of the terminals is multiple, and the terminals are electrically connected with the pole pieces in a one-to-one correspondence manner; and

the rubber core wraps the circuit board, one side of the terminal and one end of the lead, and is used for being plugged into mobile equipment to enable the terminal to be electrically connected with the mobile equipment; and part of the rubber core has flexibility.

In one embodiment, the terminal is connected to the pole piece by welding or riveting, so that the terminal is fixedly connected with the pole piece electrical connection terminal and the pole piece by welding, and the reliability of the electrical connection between the terminal and the pole piece can be ensured.

In one embodiment, a plurality of terminals are regularly arranged on one side of the circuit board; or the terminals are averagely arranged on two opposite side surfaces of the circuit board.

In one embodiment, the connector further comprises a hook, the rubber core is provided with a clamping groove and an end accommodating groove, the hook is clamped in the clamping groove to be connected with the rubber core, and the hook is used for being buckled in the mobile device; the terminal is located hold the end inslot with the pole piece electricity of circuit board is connected, and is more firm when making the gluey core peg graft on mobile device, is difficult for the pine to take off.

In one embodiment, an insertion groove is formed in the end face of the rubber core, and the insertion groove is used for being sleeved on the mobile device; the circuit board and the terminal are both positioned in the insertion groove and connected with the rubber core; or,

the terminal surface of the rubber core is provided with an insertion groove which is used for being sleeved on the mobile equipment, the circuit board and the terminal are both positioned in the insertion groove and connected with the rubber core, the rubber core is provided with an extension groove which is communicated with the insertion groove, and one part of the terminal is positioned in the extension groove and connected with the rubber core, so that the connection between the rubber core and the mobile equipment is firmer.

In one embodiment, the rubber core is hard rubber and/or soft rubber;

or the rubber core comprises a rubber core body and a peripheral layer, the peripheral layer is wrapped on the rubber core body, and the rubber core body is made of hard rubber and/or soft rubber; the peripheral layer is made of hard glue and/or soft glue.

A data line comprises a data line body and the connector, wherein the data line body is electrically connected with the end part of the lead wire, which is far away from the circuit board.

An expansion device comprises an expansion device body and the connector, wherein the expansion device body is electrically connected with the lead.

In one embodiment, the expansion device body is a back-clip battery, and the expansion device body is used for charging the mobile device;

or the expansion equipment body is a loudspeaker and is used for putting out the mobile equipment;

or the expansion equipment body is a projector and is used for projecting for the mobile equipment.

A sheath, which comprises a sheath body and the expansion device; the sheath body is provided with an accommodating groove and a first through hole, the accommodating groove is communicated with the first through hole, and the accommodating groove is used for accommodating the mobile equipment; the lead is arranged in the first through hole in a penetrating mode; the expansion equipment body is positioned in the accommodating groove and connected with the sheath body.

In one embodiment, a clamping groove is formed in the sheath body, the clamping groove is communicated with the accommodating groove, and the rubber core can be arranged in the clamping groove in a penetrating manner; when the rubber core is inserted into the mobile device, the rubber core penetrates through the clamping groove, and the rubber core is positioned on the sheath body when inserted into the mobile device, so that the rubber core and the mobile device can be better inserted.

In one embodiment, the sheath further comprises a cover plate and a connecting pin, wherein the connecting pin is fixed on the cover plate; the expansion device body is provided with an expansion pin which is electrically connected with the connection pin; the cover plate is insulating and is positioned in the accommodating groove and connected with the sheath body; two sides of the expansion equipment body are respectively abutted against the cover plate and the sheath body; the end part of the lead, which is far away from the circuit board, is fixed on the cover plate and is electrically connected with the connecting pin; the two sides of the expansion device body are respectively abutted against the cover plate and the sheath body, and the cover plate is positioned in the accommodating groove and connected with the sheath body, so that the expansion device body is not easy to separate from the sheath body, and the expansion device body can be protected.

In one embodiment, the sheath further comprises a fastener, the fastener having magnetic properties; a first groove is formed in the inner wall of the accommodating groove, and part of the fixing piece is buckled into the first groove and connected with the sheath body; the fixing piece adsorbs the expansion equipment body.

In one embodiment, the expansion device body is provided with a second groove, and the fixing member is clamped in the second groove and adsorbs the expansion device body, so that the connection between the fixing member and the expansion device body is firmer.

In the sheath, the expansion device, the data line and the connector thereof, the lead wire is welded on the circuit board and is electrically connected with the pole pieces on the circuit board, and the terminal is electrically connected with the terminal because the terminal is electrically connected with the pole pieces in a one-to-one correspondence manner; the rubber core coats the circuit board, the terminal and part of the lead, so that the circuit board, the terminal and the lead are fixed together, and the terminal is reliably electrically connected with the lead; the rubber core is inserted into the mobile equipment and has flexibility, so that the rubber core can bear certain deformation, and the connector can be obliquely inserted into and pulled out of the mobile equipment and is less influenced by a position error between the connector and the mobile equipment, so that the connector is better in use convenience; the end part of the lead wire far away from the circuit board can be electrically connected to the expansion equipment, so that the mobile equipment is electrically connected with the expansion equipment; the connector is simple in structure, easy to manufacture and process and low in cost.

Drawings

FIG. 1 is a schematic view of a sheath connector of an embodiment;

FIG. 2 is an exploded view of the connector shown in FIG. 1;

FIG. 3 is a schematic view of another embodiment of a connector;

FIG. 4 is an exploded view of a connector of yet another embodiment;

FIG. 5 is a schematic view of the connector of FIG. 4;

FIG. 6 is a cross-sectional view of a terminal of the connector shown in FIG. 1;

FIG. 7 is a cross-sectional view of the connector of FIG. 1;

FIG. 8 is a schematic view of an expansion device with the connector of FIG. 1;

FIG. 9 is a schematic view of the sheath with the expansion device of FIG. 8;

FIG. 10 is an exploded view of the sheath of FIG. 9;

FIG. 11 is a schematic view of an expansion device of another embodiment of a sheath;

fig. 12 is a partial schematic view of a corresponding sheath of the expansion device of fig. 10.

Detailed Description

To facilitate an understanding of the present invention, the sheath, the expansion device, the data line and the connector thereof will be more fully described with reference to the accompanying drawings. Preferred embodiments of the sheath, expansion device, data line and connector therefor are shown in the drawings. However, the sheath, expansion device, data line and connector thereof may be embodied in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete with respect to the sheath, the expansion device, the data lines, and their connectors.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the sheath, expansion device, data line and connectors thereof is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the connector 300 according to the preferred embodiment of the present invention includes a circuit board 310, leads 320, terminals 330, and a rubber core 340. A plurality of pole pieces 312 are disposed on the circuit board 310. Lead wire 320 is soldered to circuit board 310 and electrically connected to pole piece 312.

The number of the terminals 330 is plural, and specifically, the number of the terminals 330 is 16 (as shown in fig. 2), 5 (as shown in fig. 3), and 24 (as shown in fig. 4 and 5), and the number of the terminals is not limited to the above number and may be adjusted according to the number of the terminals of the data interface of the mobile device. The terminals 330 are electrically connected to the pole pieces 312 in a one-to-one correspondence. The terminal 330 is electrically connected to the mobile device. The core 340 encapsulates the circuit board 310, one side of the terminal 330, and one end of the lead 320. The rubber core 340 is used for being plugged on the mobile device, so that the terminal 330 is electrically connected with the mobile device. Part of the core 340 is flexible.

In this embodiment, the mobile device is a mobile phone, and in other embodiments, the mobile device may also be an electronic device such as a tablet computer or a notebook computer. The number of pole pieces 312 and terminals 330 is plural. In one embodiment, the plurality of terminals are regularly disposed on one side of the circuit board. Or the plurality of terminals are averagely arranged on two opposite side surfaces of the circuit board. In this embodiment, the plurality of terminals 330 may be arranged in two rows. It is understood that in other embodiments, the plurality of terminals 330 may be distributed on the circuit board 310 in one or more rows. The plurality of pole pieces 312 are electrically connected to the plurality of terminals 330 in a one-to-one correspondence. Wherein at least one pole piece 312 and at least one terminal 330 are used for ground. The number of the leads 320 is one, two or more, and the leads 320 are soldered or riveted to the circuit board 310.

In one embodiment, the lead 320 may be a cable or a flex cable or an FPC (Flexible printed circuit board). In the present embodiment, the lead 320 is a cable. In other embodiments, the terminals 330 may also be replaced with gold fingers.

The mobile equipment is provided with a data interface. The plastic core 340 is snapped into the data interface, so that the plastic core 340 is plugged into the mobile device. In one embodiment, the Circuit Board 310 is a PCB (Printed Circuit Board) or a chip or FPC. In the present embodiment, the circuit board 310 is a PCB.

As shown in fig. 2, in one embodiment, the number of terminals is 16, and the terminals are electrically connected to the pole pieces in a one-to-one correspondence. 8 of the pole pieces are disposed on a first side of the circuit board 310, and the other 8 pole pieces are disposed on a second side of the circuit board 310 opposite to the first side. The circuit board 310 is encapsulated in the plastic core 340, and the terminal 330 is partially encapsulated in the plastic core 340 and partially exposed outside the plastic core 340.

As shown in fig. 3, in one embodiment, the connector 300 further includes a hook 334. The rubber core 340 is provided with a clamping groove 341 and an end accommodating groove 343. The terminal 330 is located in the end-receiving slot 343 and electrically connected with the pole piece in the rubber core 340. The hook 334 is clipped into the slot 341 to connect with the rubber core 340. The hook 334 is used for being buckled into the mobile device, so that the connector 300 is more firm when being plugged into the mobile device and is not easy to loosen. Specifically, the snap 334 snaps into a data interface of the mobile device. One part of the terminal 330 is located in the rubber core 340 and electrically connected to the pole piece of the circuit board 310, and the other part is exposed on the end-receiving slot 343 and electrically connected to the data interface of the mobile device.

In one embodiment, the number of the card slots 341 is two, and the end receiving slot 343 is located between the two card slots 341. The number of the hooks 334 is two, and the two hooks 334 correspond to the two slots 341 one by one, so that the connector 300 is more firmly locked into the mobile device. In this embodiment, the two locking grooves 341 and the end-receiving groove 343 are both opened on the same side of the rubber core 340. In other embodiments, the two locking grooves 341 and the end-receiving groove 343 may be opened on different sides of the rubber core 340. In one embodiment, the depth of the catch groove 341 is less than the depth of the end-receiving groove 343.

It is understood that in other embodiments, the circuit board 310 may be omitted, and in one embodiment, the terminal 330 is soldered or riveted to the lead 320, such that the terminal 330 is electrically connected to the lead 320. During manufacturing, the terminal 330 is first molded by an injection molding process, the terminal 330 is welded on the circuit board 310 after molding, and the lead 320 is also welded on the circuit board 310 or the terminal 330 is directly welded on the lead 320 for secondary molding.

As shown in fig. 6, in one embodiment, the outer wall of the terminal 330 is plated with a wear layer 336 to improve the wear resistance of the terminal 330. In one embodiment, the terminal 330 is bent.

As shown in fig. 7, in one embodiment, the rubber core 340 has elasticity. When the rubber core 340 is plugged onto the mobile device, the rubber core 340 is elastically abutted against the mobile device, so that the firmness of connection between the rubber core 340 and the mobile device is ensured. In one embodiment, the material of the glue core 340 is hard glue and/or soft glue. In one embodiment, the core 340 includes a core body 342 and a peripheral layer 344, the peripheral layer 344 being wrapped around the core body 342. The rubber core body 342 is made of hard rubber and/or soft rubber. Peripheral layer 344 is made of a hard and/or soft gum. In one embodiment, the outer layer 344 has a hardness greater than the hardness of the rubber core body 342. In other embodiments, the hardness of peripheral layer 344 can also be less than or equal to the hardness of the glue core body 342.

In one embodiment, peripheral layer 344 is provided with a plurality of protrusions (not shown) that a user can grip to insert or remove the core into or from the mobile device. In one embodiment, the glue core 340 includes a first portion and a second portion, the first portion being connected to the second portion, the first portion being made of a soft glue material and the second portion being made of a hard glue material. For example, the first and second portions of the glue cartridge 340 divide the glue cartridge 340 in half. The two halves may be a front half and a back half.

As shown in fig. 5, in one embodiment, an end surface of the rubber core 340 is provided with a plug-in groove 343, the plug-in groove 343 is sleeved on a boss (not shown) of the mobile device, and the circuit board 310 and the terminal 330 are both located in the plug-in groove 343 and connected to the rubber core 340, so that the connection between the rubber core 340 and the mobile device is firmer. In one embodiment, the rubber core 340 is provided with a protruding groove 346, and the protruding groove 346 is communicated with the inserting groove 343. The terminal 330 is bent. A portion of the terminal 330 is positioned within the protrusion 346 and coupled to the core 340 to position the terminal 330.

As shown in fig. 4, in one embodiment, the number of the terminals 330 and the pole pieces 312 is 24, and 24 terminals 330 are electrically connected to 24 pole pieces 312 in a one-to-one correspondence. The 24 terminals are arranged in two rows, with 12 terminals located on a first side of the circuit board 310 and the other 12 terminals located on a second side of the circuit board 310 opposite the first side. The number of the protrusion grooves 346 is 24. The 24 terminals 330 are located in the 24 protruding slots 346 in a one-to-one correspondence. Wherein 12 protruding grooves 346 are arranged on a first side of the rubber core 340, and the other 12 protruding grooves 346 are arranged on a second side of the rubber core 340 opposite to the first side.

The present application also provides a data line (not shown). The data line includes a data line body and the connector 300 described above. The data line body is electrically connected to the end of the lead 320 remote from the circuit board 310. When the data line is plugged into the mobile device through the connector 300, the body of the data line is electrically connected with the mobile device.

As shown in fig. 2 and 8, the present application also provides an expansion device 14. The expansion device 14 includes an expansion device body 142 and the connector 300 described above. The expansion device body 142 is electrically connected to the leads 320, so that the expansion device body 142 is electrically connected to the circuit board 310. In the present embodiment, the expansion device body 142 is electrically connected to the end of the lead 320 far from the circuit board 310. When the connector 300 is plugged into the mobile device, the expansion device body 142 is electrically connected with the mobile device.

The expansion device body 142 can charge the mobile device, or play out, project and the like for the mobile device. The expansion device body 142 may be a back-clip battery or a speaker or a projector or other device. In one embodiment, the expansion device body 142 is a back-clip battery. The expansion device body 142 is used for charging the mobile device. When the connector is plugged into the mobile device, the expansion device body 142 charges the mobile device. Or the expansion device body 142 is a loudspeaker, and the expansion device body 142 provides external placement for the mobile device. Or the expansion device body 142 is a projector, and the expansion device body 142 projects for the mobile device.

As shown in fig. 9, the present application also provides a sheath 10. The case 10 is used to protect the mobile device. Sheath 10 includes a sheath body 12 and an expansion device 14. The sheath body 12 is provided with a receiving groove 110 and a first through hole (not shown), and the receiving groove 110 is communicated with the first through hole. The receiving groove 110 is used to receive a mobile device. The lead 320 is disposed through the first through hole. The end of the lead 320 remote from the circuit board 310 is electrically connected to the expansion device body.

The expansion device body 142 is connected to the sheath body 12 within the receiving groove 110. As shown in fig. 9, in one embodiment, the sheath body 12 is formed with a slot 130, and the slot 130 is communicated with the receiving groove 110. The rubber core 340 can penetrate through the clamping groove 130. When the rubber core 340 is inserted into the mobile device, the rubber core 340 is inserted into the slot 130, so that the rubber core 340 is inserted into the mobile device and is positioned on the sheath body 12, thereby better inserting the rubber core 340 into the mobile device. In the present embodiment, the card slot 130 corresponds to a data interface of the mobile device.

As shown in fig. 10, in one embodiment, the sheath 10 further includes a cover plate 400 and a connection pin 500, the connection pin 500 being fixed to the cover plate 400. The expansion device body 142 is provided with expansion pins 142a, and the expansion pins 142a are electrically connected to the connection pins 500. The cover 400 has insulation properties. The cover plate 400 is located in the receiving groove 110 and connected to the jacket body 12. The two sides of the expansion device body 142 are respectively abutted against the cover plate 400 and the sheath body 12, and since the cover plate 400 is located in the accommodating groove 110 and connected with the sheath body 12, the expansion device body 142 is not easily separated from the sheath body 12, and the expansion device body 142 can be protected.

The end of the lead 320 far from the circuit board 310 is fixed on the cover plate 400 and electrically connected to the connection pin 500, and the extension pin 142a is electrically connected to the extension pin 320 and the connection pin 500, so that the lead 320 is electrically connected to the extension pin 142 a. The two sides of the expansion device body 142 are respectively abutted with the cover plate 400 and the sheath body 12, and the cover plate 400 is located in the accommodating groove 110 and connected with the sheath body 12.

In this embodiment, the cover 400 is covered on the sheath body 12, so that the expansion device body 142 is clamped between the cover 400 and the sheath body 12. In one embodiment, the cover plate 400 is attached to the jacket body 12 by gluing or welding. It is to be understood that the cover plate 400 is not limited to being attached to the jacket body 12 by gluing or welding. For example, the cover plate 400 may be fastened to the jacket body 12 by screws.

As shown in fig. 10, in one embodiment, the sheath 10 further includes a fastener 600. The fixing member 600 has magnetism. As shown in fig. 9, a first groove 112 is formed on an inner wall of the receiving groove 110. Part of the fixing member 600 is buckled into the first groove 112 to be connected with the sheath body 12. The fixing member 600 absorbs the expansion device body 142, so that the expansion device body 142 is fixed to the sheath body 12.

As shown in fig. 10, in one embodiment, the expansion device body 142 is provided with a second groove 213, and the fixing member 600 is located in the second groove 213 and adsorbs the expansion device body 142, so that the fixing member 600 performs positioning and fixing functions on the expansion device body 142. In this embodiment, the fixing member 600 is a magnet.

As shown in fig. 10, in one embodiment, the number of the fixing members 600 is multiple, the number of the second grooves 213 is multiple, and the plurality of fixing members 600 are snapped into the plurality of second grooves 213 in a one-to-one correspondence, so that the expansion device body 142 is better connected to the sheath body 110.

It is understood that the cover plate 400 may be omitted. As shown in fig. 11 and 12, in one embodiment, connection pin 500 is disposed on sheath body 12. The connection pin 500 abuts against the expansion pin 142a to be electrically connected to the expansion pin 142 a. The expansion device body 142 is connected to the sheath body 12 within the receiving groove 110. In one embodiment, the expansion device body 142 may be connected to the sheath body 12 by gluing or welding. In other embodiments, the expansion device body 142 may be connected to the sheath body 12 by magnetic attraction.

In one embodiment, a magnetic layer (not shown) or a metal layer (not shown) is disposed on an inner wall of the receiving groove 110 of the sheath body 12, so that the fixing element 600 is attracted to the sheath body 12, thereby further securing the connection between the fixing element 600 and the sheath body 12.

In the sheath 10, the expansion device 14, the data line 144 and the connector 300 thereof, the lead wire 320 is soldered on the circuit board 310 and electrically connected to the pole piece 312 on the circuit board 310, and the terminal 330 is electrically connected to the terminal 320 because the terminal 330 is electrically connected to the pole piece 312 in a one-to-one correspondence. Since the core 340 covers the circuit board 310, the terminal 330 and a portion of the lead 320, the circuit board 310, the terminal 330 and the lead 320 are fixed together, so that the terminal 330 and the lead 320 are electrically connected reliably.

Because gluey core 340 pegs graft on the mobile device, and gluey core 340 has the compliance, makes gluey core 340 can bear certain deformation, so, connector 300 can insert and draw on the mobile device to one side, receives the influence of the position error between connector 300 and the mobile device less to the convenient to use nature that makes connector 300 is better. The end of the lead 320 remote from the circuit board 310 may be electrically connected to the expansion device 14 to electrically connect the mobile device to the expansion device 14. The connector 300 has a simple structure, is easy to manufacture and process, and enables the connector 300 to have low cost.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A connector for connecting to a mobile device, the connector comprising:

the circuit board is provided with a plurality of pole pieces;

2. The connector of claim 1, wherein the terminal is connected to the pole piece by welding or riveting, electrically connecting the terminal to the pole piece.

3. The connector according to claim 1 or 2, wherein a plurality of the terminals are regularly provided on one side of the circuit board; or the terminals are averagely arranged on two opposite side surfaces of the circuit board.

4. The connector according to claim 1 or 2, further comprising a hook, wherein the rubber core is provided with a slot and an end receiving slot, the hook is clamped into the slot and connected with the rubber core, and the hook is used for being buckled into the mobile device; the terminal is positioned in the accommodating end groove and is electrically connected with the pole piece of the circuit board.

5. The connector according to claim 1 or 2, wherein an insertion groove is formed in an end face of the rubber core, the insertion groove is used for being sleeved on the mobile device, and the circuit board and the terminal are both located in the insertion groove and connected with the rubber core; or,

the terminal surface of the rubber core is provided with an insertion groove, the insertion groove is used for being sleeved on the mobile device, the circuit board and the terminal are both positioned in the insertion groove and connected with the rubber core, the rubber core is provided with an extension groove, the extension groove is communicated with the insertion groove, and one part of the terminal is positioned in the extension groove and connected with the rubber core.

6. The connector according to claim 1 or 2, wherein the glue core is a hard glue and/or a soft glue;

7. A data cable comprising a data cable body and a connector as claimed in any one of claims 1 to 6, the data cable body being electrically connected to the end of the lead remote from the circuit board.

8. An expansion device comprising an expansion device body and the connector of any one of claims 1 to 6, wherein the expansion device body is electrically connected to the lead.

9. The expansion device of claim 8, wherein the expansion device body is a back-clip battery, and the expansion device body is used for charging the mobile device;

10. A sheath comprising a sheath body and an expansion device of claim 8 or 9; the sheath body is provided with an accommodating groove and a first through hole, the accommodating groove is communicated with the first through hole, and the accommodating groove is used for accommodating the mobile equipment; the lead is arranged in the first through hole in a penetrating mode; the expansion equipment body is positioned in the accommodating groove and connected with the sheath body.

11. The sheath of claim 10, wherein a clamping groove is formed on the sheath body, the clamping groove is communicated with the accommodating groove, and the rubber core can be arranged in the clamping groove in a penetrating manner; when the rubber core is inserted into the mobile device, the rubber core penetrates through the clamping groove.

12. The sheath of claim 11, further comprising a cover plate and a connection pin, the connection pin being secured to the cover plate; the expansion device body is provided with an expansion pin which is electrically connected with the connection pin; the cover plate is insulating and is positioned in the accommodating groove and connected with the sheath body; two sides of the expansion equipment body are respectively abutted against the cover plate and the sheath body; the end part of the lead wire, which is far away from the circuit board, is fixed on the cover plate and is electrically connected with the connecting pin.

13. The sheath of claim 12, further comprising a fastener, the fastener having magnetic properties; a first groove is formed in the inner wall of the accommodating groove, and part of the fixing piece is buckled into the first groove and connected with the sheath body; the fixing piece adsorbs the expansion equipment body.

14. The sheath of claim 13, wherein the expansion device body is provided with a second groove, and the fixing member is located in the second groove and absorbs the expansion device body.