CN108448305B

CN108448305B - USB connection structure and electronic equipment with same

Info

Publication number: CN108448305B
Application number: CN201810146127.2A
Authority: CN
Inventors: 王晓; 朱志辉; 吴锋辉
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2020-11-10
Anticipated expiration: 2038-02-12
Also published as: CN108448305A

Abstract

The present disclosure relates to a USB connection structure and an electronic device having the same, wherein the USB connection structure includes a tongue for transmitting data between an internal device and an external device, the USB connection structure further includes a fixedly installed inner housing and an outer housing, the inner housing is formed in a substantially cylindrical shape through a drawing process of a stamping process, a space for inserting the external device is formed between the tongue and the inner housing, and the outer housing is connected to the internal device. Different from the traditional MIM process, the inner shell material manufactured by the stamping and drawing process is compact in interior and does not have bubbles or cracks, so that the waterproof performance is better, and even if water enters the space between the tongue piece and the inner shell, the water cannot further permeate into the inner shell, so that the first protection is formed on the water which accidentally enters; in addition, the cost of the stamping process is reduced by 10-20 times compared with the MIM process, the manufacturing investment is saved, and the manufacturing efficiency is improved.

Description

USB connection structure and electronic equipment with same

Technical Field

The present disclosure relates to a USB connection structure, and more particularly, to a USB connection structure with waterproof performance and an electronic device having the USB connection structure.

Background

The USB connection structure is an indispensable bridge for data transmission between different electronic devices. The USB connection structure includes a conventional USB connector, such as a USB2.0 interface, a USB3.0 interface, etc., where the conventional USB connector needs to distinguish front and back sides, and an external connection device needs to be aligned with an interface direction of a USB connection female socket (i.e., an internal device disposed in a mobile phone, a computer, etc.) to be inserted; still include neotype USB connector, for example have TYPE C interface, this TYPE neotype USB connector need not distinguish the positive and negative, external connection equipment with USB connect female seat direct cartridge can, realized that the positive and negative two sides can be inserted.

As shown in fig. 1, taking a new USB connector with TYPE C interface as an example, the USB connector has a tongue piece 10 and a shell, the tongue piece 10 is used for transmitting data information between an external device and an internal device, the shell is formed in a cylindrical shape and has a body 21 and ear plates 22 protruding from two sides of the body 21, the body 21 is used for wrapping the tongue piece 10, and the ear plates 22 have round holes for screwing with the internal device. A space for inserting an external connector is formed between the case through which the USB connector is connected to an internal device and the tongue 10. In the related art, the housing is molded by using a Metal Injection Molding (MIM) process, and a housing product is formed through steps of mixing metal powder with a binder, kneading, pulverizing, granulating, Injection Molding, degreasing, and sintering.

The USB connector in the related art has the following drawbacks: the shell is made by an MIM process, and the texture is rough, so that expression pores can be formed in the material during the forming process, so that when the USB connector is contacted with liquid, the liquid can permeate into the shell, further reach a gap between the shell and an electric element contacted with the shell, and further reach the electric element, and finally damage to the electric element is caused, which is not beneficial to the whole machine water resistance of the electronic equipment; in addition, the MIM process has many steps and relatively complicated process, which is helpful for forming products with complicated shapes, but the manufacturing cost is too high.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a USB connection structure and an electronic device having the same.

According to a first aspect of the embodiments of the present disclosure, there is provided a USB connection structure including a tongue extending in an insertion direction of an external device and an internal device to transmit data between the internal device and the external device, the USB connection structure further including a fixedly installed inner housing and an outer housing, the inner housing being formed substantially in a cylindrical shape by a drawing process of a punching process, a space for insertion of the external device being formed between the tongue and the inner housing, and the outer housing being connected to the internal device.

Preferably, the USB connection structure further includes a sealing ring, the inner shell includes an inner shell body sleeved with the tongue piece and an inner shell flange turned over radially outward from the inner shell body, the outer shell includes an outer shell body sleeved with the inner shell body and an outer shell flange turned over radially outward from the outer shell body, the inner shell body and the outer shell body are both cylindrical, and the sealing ring is located between the outer shell flange and the inner shell flange along the insertion direction and can be deformed by external force to be extruded between the inner shell flange, the outer shell flange and the internal device.

Preferably, the inner case body has an opening for receiving the external device, the inner case burring is formed along an entire circumference of the opening, and the outer case burring is dispersedly formed along a circumferential direction of the outer case body.

Preferably, the inner shell flanging and the outer shell body form a predetermined gap along the insertion direction, the predetermined gap is slightly larger than the thickness of the sealing ring, and when the sealing ring deforms under external force, the predetermined gap is filled with the deformed sealing ring.

Preferably, the inner shell body and the outer shell body are fixedly installed by laser welding or dispensing.

Preferably, the case body is formed through a bending process of a punching process.

Preferably, the inner shell bead is integrally formed with the inner shell body by a stamping process.

Preferably, the inner shell body is formed by:

the plate is subjected to a drawing process to form: drawing the plate in multiple steps to form the plate; or

The pipe is formed by performing a drawing process: the cylindrical tube is formed by multiple steps of expanding and withdrawing.

Preferably, the USB connection structure conforms to TYPE C interface standard.

According to a second aspect of the embodiments of the present disclosure, an electronic device with a USB connection structure is provided, where the electronic device is a mobile phone, and the USB connection structure is the USB connection structure according to any one of the above technical solutions.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

different from the traditional MIM process, the inner shell material manufactured by the stamping and drawing process is compact in interior and does not have bubbles or cracks, so that the waterproof performance is better, and even if water enters the space between the tongue piece and the inner shell, the water cannot further permeate into the inner shell, so that the first protection is formed on the water which accidentally enters; in addition, compared with the MIM process, the stamping process has the advantages that the cost is reduced by 10-20 times, the manufacturing investment is saved, and meanwhile, the manufacturing efficiency is improved.

The USB connecting structure forms a first protection through the inner shell manufactured by the stamping and drawing process, and forms a second protection through the sealing ring, so that effective protection can be implemented no matter water enters into the insertion space of external equipment or water enters into the space between the USB connecting structure and the internal equipment, and the whole machine is waterproof.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic perspective view of a conventional USB connection structure.

Fig. 2 is a schematic perspective view of a USB connection structure according to a first embodiment of the present invention, showing the USB connection structure mounted on a circuit board of an internal device.

Fig. 3 is an exploded view of the USB connection structure of fig. 2, showing the USB connection structure detached from the circuit board.

Fig. 4 is a side view of a USB connection structure according to a first embodiment of the present invention.

Description of reference numerals:

the prior art is as follows:

10 tongue

21 body

22 ear plate

The present disclosure:

1 tongue piece

11 base member

12 surround

2 inner shell

21 inner shell body

22 inner shell flanging

3 outer cover

31 housing body

32 mounting piece

33 connecting claw

34 riveting gap

35 shell flanging

4 sealing ring

5 PCB Circuit Board

51 mounting hole

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The invention provides a USB connecting structure which is used for connecting external equipment (such as a data line) and internal equipment (such as a mobile phone and a computer) and transmitting data between the external equipment and the internal equipment through an internal tongue piece.

Fig. 2 to 4 show a first embodiment of the USB connection structure, which is constructed in detail below.

The USB connecting structure may include a tongue 1, an inner housing 2, and an outer housing 3, the tongue 1 extends along a direction of inserting an external device into an internal device so as to transmit data between the internal device and the external device, the inner housing 2 and the outer housing 3 are sequentially sleeved outside the tongue 1, the tongue 1 is fixedly mounted on the inner housing 2, a space for inserting the external device is formed between the inner housing 2 and the tongue 1, the outer housing 3 is fixedly mounted on the inner housing 2, and the outer housing 3 is connected to the internal device, as in this embodiment, the outer housing 2 may be specifically connected to a PCB 5 of the internal device (e.g., a mobile phone). Thus, the tongue 1 is fixed to the internal device by the inner and

outer shells

2 and 3.

In this embodiment, the inner shell 2 is formed by a punching process, specifically, a drawing process (hereinafter, referred to as a punching drawing process) of a punching process, which uses a metal plate or a metal pipe as a raw material, and gradually forms a finished product of the inner shell 2 by a plurality of times of drawing.

Different from the traditional MIM process, the material of the inner shell 2 manufactured by the stamping and drawing process is compact in the interior and has no bubbles or cracks, so that the waterproof performance is better, and even if water enters the space between the tongue piece 1 and the inner shell 2, the water cannot further permeate into the inner shell 2, so that the first protection is formed on the water which accidentally enters; in addition, the inner shell 2 and the outer shell 3 are distinguished by functions, namely the inner shell 2 is used for sleeving the tongue pieces 1, the outer shell 3 is used for connecting internal equipment, the inner shell 2 and the outer shell 3 are manufactured in a split mode, a stamping process is adopted for the cylindrical inner shell 2 to replace a traditional MIM process, the cost can be reduced by 10-20 times at least in the step of forming the inner shell 2 compared with the existing manufacturing process, and manufacturing investment is saved. .

The various components of the USB connection structure are described in detail below.

Tongue 1

Tongue 1 is an important part of a USB connection structure having a data transmission function, and includes a base member 11 and a plurality of pins provided on base member 11, and the pins for connecting an external device and the pins for connecting PCB circuit board 5 communicate so that data is transmitted between the external device and an internal device. Tongue 1 further comprises a surrounding element 12 surrounding base element 11, surrounding element 12 being located at the end of tongue 1 near the internal equipment and being intended to be connected to inner shell 2. The enclosure 12 may be attached to the inner shell 2 by means of spot-gluing or laser welding.

Inner shell 2

The inner case 2 includes an inner case body 21 and an inner case bead 22, and the inner case body 21 is formed in a substantially cylindrical shape whose cross-sectional shape is not circular but elliptical or oblong, so that the cross-section of the inner case 2 has a major diameter in the direction along the width direction of the tongue piece 1 and a minor diameter in the direction along the thickness direction of the tongue piece 1.

In this section, the term "radially outward" refers to the radial direction of the inner shell 2, for example, "radially outward along the inner shell 2" refers to the axial direction away from the inner shell 2 in the radial direction, and the term "insertion direction" refers to the cylindrical extension direction, i.e., the axial direction of the inner shell 2.

The inner case body 21 is fitted over the tongue 1, and the inner case body 21 has an opening near an external device, through which the external device can enter the space between the tongue 1 and the inner case 2. The inner shell flange 22 is folded radially outward from the opening of the inner shell body 21, and the inner shell flange 22 is formed along the entire circumference of the opening of the inner shell body 21. Like this, when unexpected into water between USB connection structure and the internal plant, the sealing washer that is located the opening part can stop water to permeate along the cartridge direction the very first time.

The inner case body 21 may be manufactured through a drawing process by a punching process. The following describes the forming process of the inner shell body 21 by taking the example of punching a sheet or plate and punching a pipe or tube to manufacture the inner shell body 21:

when punching the sheet material, the axial direction of the inner shell 2 is the punching direction, and the finished product of the inner shell 2 is formed through the steps of punching blanking, multi-step drawing, shaping, lower bottom hole, adjusting, electroplating and the like, and the drawing process can be gradually performed through the drawing of a plurality of steps, for example: in this embodiment, the inner shell body 21 may include two sections with different inner diameters, the large-diameter section and the small-diameter section may be formed gradually through a plurality of drawing steps, and both may be drawn simultaneously or sequentially; for the inner shell body 21 with uniform inner diameter, the whole of the inner shell body 21 is extracted

When stamping the pipe, the finished metal pipe is used as the raw material, or the pipe formed by rolling the sheet into a cylinder and welding the joint is used as the raw material, the raw material is placed in a specific jig, and the pipe is expanded and drawn by a mold core to obtain the required shape of the inner shell, for example: in this embodiment, the inner shell body 21 may include two sections with different inner diameters, and the small-diameter section may be formed only by natural shaping (the small section after natural shaping has the same circumference and a different cross-sectional shape as the raw material pipe) and then the above-mentioned multiple drawing steps are applied to the large-diameter section, and the finished inner shell body is formed through the multiple drawing steps; for the inner shell body 21 with uniform inner diameter, the raw material can be placed in a specific jig, and all the pipe fittings can be expanded and drawn out through the die core, so as to obtain the required shape of the inner shell.

The inner shell body 21 with better quality and standard shape can be formed by multiple times of gradual drawing.

The inner shell burring 22 may be formed integrally with the inner shell body 21 by a press process, and may be formed by a bending process, a burring process, or the like in the process of forming the inner shell body 21. Thus, no gap exists between the inner shell flanging 22 and the inner shell body 21, which is beneficial to the water resistance of the whole machine and the improvement of the manufacturing efficiency.

Outer cover 3

The housing 3 includes a housing body 31, a housing flange 35, and a connecting structure, and the housing body 31 is formed in a substantially cylindrical shape whose sectional shape is not a circle but an ellipse or an oval, so that the housing 3 has a section with a major diameter in a direction along the width direction of the tongue piece 1 and a minor diameter in a direction along the thickness direction of the tongue piece 1.

In this section, the term "axial" refers to the axial direction of the housing 3, and in this section, the term "radial" refers to the radial direction of the housing 3.

The shell flange 35 is turned outward in the radial direction of the shell body, specifically, the shell flange 35 may be turned outward in the radial direction from the opening of the shell body 31, and the shell flange 35 is formed dispersedly in the circumferential direction along the opening of the shell body 31. In this embodiment, the shell flange 35 is a flange protruding radially outward from the shell body 31, and the number may be 4 and be located on both axial sides of the shell body 31 in a pair.

The outer shell body 31 encases the inner shell body 21 on the outside of the inner shell body 21, and the connecting structure extends outwardly from the outer shell body 31. The connecting structure has a mounting piece 32 connected to the housing body 31 and a connecting claw 33 extending from the mounting piece 32, the mounting piece 32 extends backward from the housing body 31 in the insertion direction, and the connecting claw 33 extends from the mounting piece 32 to both sides of the housing body 31 in the axial direction and forms three bends, a first bend, a second bend and a third bend.

The three bends of the connecting claw 33 are connected in sequence, the first bend extends in the thickness direction of the tongue piece 1, the second bend extends in the width direction of the tongue piece 1, and the third bend extends in the thickness direction of the tongue piece 1, so that the connecting claw 33 covers the tongue piece 1 in the thickness direction on the side of the tongue piece 1 by the three bends and substantially coincides with the size of the case body 31 in the thickness direction of the tongue piece 1.

The four connecting claws 33 may be provided, and two of them are arranged in pairs on both sides of the housing body 31 in the axial direction. The PCB 5 is formed with a mounting hole 51, and the connecting claw 33 of the housing 3 can be inserted into the mounting hole 51 and clamped in the mounting hole 51 to fixedly mount the PCB 5 to the internal device. Thus, the housing 3 can be stably mounted to the PCB circuit board 5.

The inner housing body 21 may be fixedly mounted to the outer housing 3 by the outer housing body 31 and the mounting pieces 32, such as by laser welding or adhesive bonding between the inner housing body 21 and the outer housing body 31 and between the inner housing body 21 and the mounting pieces 32.

It can be seen that in this embodiment, the housing 3 is not manufactured by the MIM process, does not have an excessively complicated shape, and can be stably mounted to an internal device by a connection structure.

The housing body 31 may be formed by a press process, and may be formed by a bending process.

The attachment pieces 32, the connecting claws 33, and the housing body 31 may be integrally formed by a punching process, such as by punching a sheet metal member, or by a press-bending process.

The housing body 31 has a caulking slit 34 formed by a bending process, and the caulking slit 34 and the attachment piece 32 are located on both sides of the housing 3 in the axial direction. With respect to fig. 2, the rivet slit 34 is located below the view (not shown due to occlusion).

Sealing ring 4

The USB connecting structure can also comprise a sealing ring 4, and the sealing ring 4 is positioned between the outer shell flange 35 and the inner shell flange 22 along the inserting direction. The gasket 4 can be deformed by an external force, and the deformed gasket 4 is pressed between the inner shell flange 22 and the outer shell flange 35. The shell flange 35 protrudes outward in the radial direction of the shell body 31 by a predetermined length over which the seal ring 4 contacts the shell flange 35, while also being able to contact the shell body 31, so that the shell flange 35 and the shell body 31 (mainly the shell flange 35) restrict the movement of the seal ring 4 in the insertion direction at a specific position in the circumferential direction of the shell 3. The inner shell bead 22 can be brought into contact with the seal ring 4 along the entire circumference of the seal ring 4 to restrict the movement of the seal ring 4 in the insertion direction.

The inner shell flange 22 and the outer shell 3 have a predetermined gap in the insertion direction closest to the inner shell flange 22, the predetermined gap is slightly larger than the sealing ring 4, so that the sealing ring 4 is not deformed and is in a natural state without external force, and when the sealing ring 4 is deformed by external force, the size of the sealing ring 4 in the insertion direction is increased, so that the sealing ring is clamped by the inner shell flange 22, the outer shell flange 35 and the outer shell body 31 simultaneously. At the same time, the sealing ring 4 protrudes radially outward along the outer shell 3 beyond the outer shell flange 35 and the inner shell flange 22, so that it can fill the gap between the internal device and the USB connection structure when deformed.

Thus, even if water enters the space between the USB connecting structure and the internal equipment, the water is blocked by the sealing ring 4 and cannot further permeate along the insertion direction, and a second protection is formed for the water which accidentally enters.

It can be seen that, in this embodiment, the USB connection structure forms the first protection through the inner shell 2 that the punching press was drawn and is drawn technology and make, and form the second protection through sealing washer 4, and like this, no matter be that the cartridge space of external equipment intakes or the USB connection structure intakes with the internal plant between, effective protection can all be implemented to realize that the complete machine is waterproof.

It should be understood that the USB connection structure provided by the present invention is a USB connection female socket, which is typically installed within an internal device.

The USB connection structure may have a conventional USB structure, such as USB2.0 interface standard and USB3.0 interface standard, and may also conform to TYPE C interface standard.

The USB connecting structure can be arranged on a mobile phone and provides a charging interface and a data transmission interface of the mobile phone.

The first embodiment of the USB connection structure provided by the present invention is specifically described above, and the following points are described:

1. the housing body 31 may also be formed by a stamping and drawing process, and the connection structure is formed separately from the housing body 31 by a sheet metal stamping process.

2. The sealing ring 4 is formed by a common elastic material, such as a rubber material.

3. The inner casing 2 and the outer casing 3 are formed of a common metal material, such as stainless steel.

4. The inner shell beads 22 may also be formed discretely along the opening of the inner shell body 21, or not formed at the opening but formed at the rear side of the opening in the insertion direction.

The 5 shell flange 35 may be formed along the entire periphery of the opening of the shell body 31, or may not be formed at the opening, but may be formed at the rear side of the opening in the insertion direction.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A USB connection structure including a tongue extending in an insertion direction of an external device and an internal device to transmit data between the internal device and the external device, characterized by further comprising a fixedly installed inner housing formed substantially in a cylindrical shape by a drawing process of a punching process, and an outer housing connected to the internal device with a space for insertion of the external device formed therebetween,

the USB connecting structure further comprises a sealing ring, the inner shell comprises an inner shell body sleeved with the tongue piece and an inner shell flanging turned outwards along the radial direction from the inner shell body, the outer shell comprises an outer shell body sleeved with the inner shell body and an outer shell flanging turned outwards along the radial direction from the outer shell body, the inner shell body and the outer shell body are both cylindrical, and the sealing ring is located between the outer shell flanging and the inner shell flanging along the inserting direction and can be deformed by external force to be extruded among the inner shell flanging, the outer shell flanging and the internal equipment;

the USB connecting structure has a mounting piece connected to the case body and connecting claws extending from the mounting piece, the mounting piece extends rearward from the case body in the insertion direction, the connecting claws extend from the mounting piece to both axial sides of the case body,

the connecting claw can be inserted into a mounting hole formed on a PCB of the internal device and clamped in the mounting hole so as to be fixedly mounted on the PCB,

the outer shell body is provided with riveting gaps, the riveting gaps and the area of the outer shell body for being installed with the inner shell body are positioned on two opposite sides of the axis of the outer shell body, the area of the outer shell body for being installed with the inner shell body comprises the area of the outer shell body connected with the installation sheet, the inner shell body and the outer shell body are fixedly installed through laser welding or dispensing,

the inner case body has an opening for receiving the external device, the inner case burring is formed along the entire circumference of the opening, and the outer case burring is dispersedly formed along the circumference of the outer case body.

2. The USB connecting structure according to claim 1, wherein the flange of the inner shell and the outer shell body form a predetermined gap along the inserting direction, the predetermined gap is slightly larger than the thickness of the sealing ring, and when the sealing ring is deformed by an external force, the predetermined gap is filled with the deformed sealing ring.

3. The USB connection structure according to claim 1, wherein the case body is formed by a bending process of a punching process.

4. The USB connecting structure of claim 1, wherein the inner shell flange is integrally formed with the inner shell body by a stamping process.

5. The USB connection structure of claim 1, wherein the inner housing body is formed by:

6. The USB connection structure of claim 1, wherein the USB connection structure conforms to TYPE C interface standard.

7. An electronic device with a USB connection structure, wherein the electronic device is a mobile phone, and the USB connection structure is the USB connection structure according to any one of claims 1 to 6.