CN107172241B

CN107172241B - Functional module and mobile terminal

Info

Publication number: CN107172241B
Application number: CN201710530946.2A
Authority: CN
Inventors: 曾赞坚
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2023-08-04
Anticipated expiration: 2037-06-30
Also published as: CN107172241A

Abstract

The functional component comprises a circuit board, a decorative ring fixed relative to the circuit board and a grounding metal sheet fixed on one side of the circuit board, which faces the decorative ring, wherein the grounding metal sheet is provided with a grounding end far away from the circuit board, and the grounding end and the decorative ring form a capacitor so as to realize the grounding arrangement of the decorative ring. Through the earthing terminal of earthing metal sheet with set up the clearance between the decorative ring, the earthing metal sheet with the decorative ring forms electric capacity jointly, realizes decorative ring ground connection, the earthing metal sheet is right decorative ring is not applyed conflict power moreover, decorative ring can not be unstable because of the atress structure, has improved user experience.

Description

Functional module and mobile terminal

Technical Field

The present invention relates to the field of electronic devices, and in particular, to a functional component and a mobile terminal.

Background

At present, the outside of the mobile phone is provided with an exposed decorative ring. When touching the decorative ring, the user is easy to have the problems of electric shock or static electricity discharge and the like, so that the mobile phone has potential safety hazard. At present, the grounding spring plate is arranged inside the mobile phone to abut against the decorative ring, so that the decorative ring is grounded, and the electric shock or static discharge problem is avoided. However, under such a structure, the grounding spring plate has elastic supporting force on the decorative ring, so that the decorative ring is stressed, and the decorative ring is unstable in structure under the stress condition, thereby reducing user experience.

Disclosure of Invention

The invention aims to provide a functional component and a mobile terminal for improving user experience.

In order to solve the technical problems, the invention provides a functional component, wherein the functional component comprises a functional device, a decorative ring sleeved on the functional device, a circuit board and a grounding metal sheet fixed on the circuit board, the grounding metal sheet is provided with a grounding end far away from the circuit board, and the grounding end and the decorative ring form a capacitor so as to realize grounding arrangement of the decorative ring.

The invention further provides the mobile terminal, wherein the mobile terminal comprises the functional component.

According to the functional component and the mobile terminal provided by the invention, the grounding metal sheet and the decorative ring form a capacitor together through the gap between the grounding end of the grounding metal sheet and the decorative ring, so that the decorative ring is grounded, the grounding metal sheet does not apply an interference force to the decorative ring, the decorative ring is not unstable in structure due to stress, and the user experience is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a functional assembly provided by an embodiment of the present invention;

FIG. 2 is a schematic circuit diagram of a functional component according to an embodiment of the present invention;

FIG. 3 is another cross-sectional schematic view of a functional assembly provided by an embodiment of the present invention;

FIG. 4 is a side exploded view of a functional assembly provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of the three-dimensional diversity of functional components provided by an embodiment of the present invention;

FIG. 6 is a schematic front view of a functional assembly provided by another embodiment of the present invention;

FIG. 7 is another partial cross-sectional schematic view of a functional assembly provided by an embodiment of the present invention;

FIG. 8 is a schematic partial cross-sectional view of a functional assembly provided by another embodiment of the present invention;

FIG. 9 is a schematic partial cross-sectional view of a functional assembly provided by another embodiment of the present invention;

FIG. 10 is another partial cross-sectional schematic view of a functional assembly provided by an embodiment of the present invention;

FIG. 11 is a schematic perspective view of a grounding metal sheet of a functional module according to another embodiment of the present invention;

fig. 12 is a schematic perspective view of a grounding metal sheet of a functional component according to an embodiment of the present invention;

FIG. 13 is another partially exploded perspective view of the functional components provided by an embodiment of the present invention;

FIG. 14 is another partially exploded perspective view of the functional components provided by an embodiment of the present invention;

FIG. 15 is another schematic front view of a functional assembly provided by another embodiment of the present invention;

FIG. 16 is another side schematic view of a functional assembly provided by another embodiment of the present invention;

fig. 17 is an exploded perspective view of a mobile terminal according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.

In describing embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the term "thickness" or the like is based on the orientation or positional relationship shown in the drawings, for convenience of description and simplification of the description, and is not to be construed as implying or indicating that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the present invention provides a functional module 100, where the functional module 100 includes a circuit board 10, a decorative ring 20 fixed relative to the circuit board 10, and a grounding metal sheet 30 fixed on a side of the circuit board 10 facing the decorative ring 20, the grounding metal sheet 30 has a grounding end 31 far from the circuit board 10, and a gap a exists between the grounding end 31 and the decorative ring 20, so that the decorative ring 20 and the grounding metal sheet 30 form a capacitor b, and the decorative ring 20 is grounded. The functional assembly 100 further comprises a functional device 40, and the decorative ring 20 is sleeved on the functional device 40. It is understood that the functional component 100 is applied to a mobile terminal, which may be a mobile phone, a tablet computer, a notebook computer, or the like. The decorative ring 20 is an external structural member of the mobile terminal, and when the mobile terminal is used by a user, the decorative ring 20 is easy to touch, and the decorative ring 20 is grounded through the grounding metal sheet 30, so that the safety is improved.

Through the earthing end 31 of the earthing metal sheet 30 with set up clearance a between the decorative ring 20, decorative ring 20 with earthing metal sheet 30 forms electric capacity b, and decorative ring 20 passes through electric capacity b ground connection for earthing metal sheet 30 is right decorative ring 20 does not exert the conflict power, decorative ring 20 can not be unstable because of atress structure, has improved user experience.

In this embodiment, the circuit board 10 includes a first surface 11 and a second surface 12 disposed opposite to the first surface 11. The first surface 11 faces the decorative ring 20, and the grounding metal sheet 30 is fixed on the first surface 11 of the circuit board 10. The circuit board 10 supports the ground metal sheet 30 such that a gap is always maintained between the ground metal sheet 30 and the bezel 20. And the grounding metal pieces 30 facilitate electrical connection to the ground electrode 301 via the circuit board 10. In one embodiment, the circuit board 10 may be independent of the ground electrode 301, and the ground metal sheet 30 may be electrically connected to the ground electrode 301 via a flexible circuit board. In another embodiment, the ground electrode 301 may be disposed on the circuit board 10, and the ground metal sheet 30 may be electrically connected to the ground electrode 301 via a copper foil wire disposed on the circuit board 10. The decorative ring 20 is indirectly fixed to the circuit board 10, and the decorative ring 20 may be fixed to the circuit board 10 by a bracket or may be fixed to the circuit board 10 by a housing. The decorative ring 20 and the grounding metal sheet 30 are arranged at the opposite position in a flat manner, so that the decorative ring 20 can effectively transfer charges to the grounding metal sheet 30, electric arcs are prevented from being generated between the decorative ring 20 and the grounding metal sheet 30, and safety is improved. The grounding metal sheet 30 is disposed flat towards one end face of the decorative ring 20. The functional device 40 may be a glass cover plate, a key, or a decorative cover plate, and the decorative ring 20 absorbs static electricity to prevent static electricity from being transferred to the functional module through the functional device 40, thereby improving safety.

Further, referring to fig. 3, the functional module 100 further includes a housing 50, the housing 50 is provided with a mounting hole 51 extending from the outside to the inside, the decorative ring 20 is fixed to the mounting hole 51, and the circuit board 10 and the grounding metal sheet 30 are both fixed to the inside of the housing 50.

In this embodiment, the housing 50 has an outer surface 52 and an inner surface 53 disposed opposite the outer surface. The mounting hole 51 extends from the outer surface 52 to the inner surface 53. The housing 50 may be a rear cover of a mobile phone battery, a front cover of a mobile phone, or a middle frame of a mobile phone. The circuit board 10 is fixed inside the housing 50. The first surface 11 of the circuit board 10 faces the inner surface 53. A space exists between the first surface 11 and the inner surface 53. The decorative ring 20 may partially cover the mounting hole 51, and may cover the mounting hole 51 in combination with other cover plates. The bezel 20 may also be configured to completely cover the mounting hole 51. The housing 50 and the bezel 20 protect the ground strap 30.

In one embodiment, referring to fig. 4 and 5, the housing 50 includes a front cover 54, a center frame 55, and a back cover 56. The front cover 54 is covered with the back cover 56, and the middle frame 55 is fixed between the front cover 54 and the back cover 56. The front cover 54 is composed of a glass plate and a display screen. The back cover 56 is a battery cover. The circuit board 10 is fixed to the middle frame 55. The second surface 12 of the circuit board 10 faces the center 54. The mounting hole 51 is provided in the back cover 56 and is located at one end of the back cover 56 in the longitudinal direction. The back cover 56 is provided with two antenna slots 561 extending in parallel in the width direction of the back cover 56, and the two antenna slots 561 divide the back cover 56 into a first region 562, a second region 563 and a third region 564. The mounting hole 51 may be located in the first region 562, the second region 563, or the third region 564. The bezel 20 may be a decorative piece or feature that is secured to the back cover 56. The bezel 20 covers the mounting hole 51 together with the functional device 40.

In another embodiment, referring to fig. 6, the mounting hole 51 is disposed on the front cover 54 and is located at one end of the front cover 54 in the length direction. The front cover 54 has a display region 541 and non-display regions 542 located at both ends in the longitudinal direction of the display region 541. The mounting hole 51 is located in the non-display region 542. The mounting holes 51 reduce the loss of the display area of the display region 541 and improve the appearance of the front cover 54. The bezel 20 may be a decorative piece or feature secured to the front cover 54.

Further, referring to fig. 7, 8 and 9, the end of the bezel 20 away from the grounding plate 30 exposes the mounting hole 51.

In this embodiment, the decorative ring 20 includes a bottom end 22 and a top end 21 opposite to the bottom end 22. The top end 21 exposes the mounting hole 51, and the decorative ring 20 decorates the outer shell 50, so that the outer shell 50 partially presents a metallic appearance effect. At the same time, the decorative ring 20 enhances the local structural stability of the housing 50.

In one embodiment, as shown in FIG. 7, the bottom end 22 is positioned within the mounting hole 51. The gap a exists between the ground end 31 and the bottom end 22. The ground terminal 31 is opposite to the bottom end 22. The grounding end 31 may be accommodated in the mounting hole 51, so that the distance between the first surface 11 and the inner surface 53 is reduced, and the overall thickness of the functional component 100 is reduced, thereby improving the user experience.

In another embodiment, as shown in fig. 8, the bottom end 22 exposes the mounting hole 51. The gap a exists between the ground end 31 and the bottom end 22. The grounding end 31 is opposite to the end face of the bottom end 22. The peripheral side wall of the decorative ring 20 is in interference fit with the inner peripheral side wall of the mounting hole 51, so that the contact area between the decorative ring 20 and the back cover 56 is increased. The decorative ring 20 is structurally stable with the back cover 56.

In another embodiment, as shown in fig. 9, the bottom end 22 exposes the mounting hole 51. The gap a exists between the ground end 31 and the peripheral side wall of the bottom end 22. The ground 31 is offset from the bezel 20, the ground 31 being closer to the inner surface 53. The first surface 11 is reduced from the inner surface 53, and the overall thickness of the functional component 100 is reduced, improving the user experience.

Further, referring to fig. 10, a support flange 511 is disposed on the inner side of the mounting hole 51, and the support flange 511 supports the bezel 20 on the side away from the circuit board 10.

In this embodiment, the support flange 511 extends circumferentially along the mounting hole 51. The support flange 511 is located inwardly of the open end of the mounting aperture 51 at the inner surface 53. The bearing flange 511 has a bearing surface 512 that opens onto the outer surface 52 toward the mounting hole 51. The supporting surface 512 is provided with a double-sided tape 513. The end surface of the bottom end 22 of the decorative ring 20 is adhered to the support flange 511 through the double-sided tape 513. The decorative ring 20 is structurally stable with the back cover 56. The decorative ring 20 can withstand a large pressure. The gap a exists between the grounding metal sheet 30 and the decorative ring 20, the grounding metal sheet 30 does not apply an interference force to the decorative ring 20 towards the outer surface 52, the decorative ring 20 is not easy to eject out of the mounting hole 51, and the double sided adhesive tape 513 is effectively adhered to the decorative ring 20.

Further, referring to fig. 11 and 12, the grounding metal sheet 30 includes a bottom plate 32 and a protrusion 33 disposed on the bottom plate 32, and the bottom plate 32 is fixed on the circuit board 10.

In this embodiment, the bottom plate 32 is a bent member. The bottom plate 32 is provided with two oppositely arranged bending support legs 321 in the length direction. The bending support 321 abuts against the first surface 11 of the circuit board 10. By disposing the grounding copper foil on the first surface 11 of the circuit board 10, the bent legs 321 abut against the grounding copper foil on the first surface 11, so that the grounding metal sheet 30 is grounded. The base plate 32 is screwed to the circuit board 10 between the two bent legs 321.

In one embodiment, as shown in fig. 11, the protrusion 33 is formed by bending the bottom plate 32 between two bending legs 321 toward the bezel 20. The grounding metal sheet 30 has a simple structure, is convenient to manufacture the grounding metal sheet 30, and reduces production cost.

In another embodiment, as shown in fig. 12, the protrusion 33 is disposed between two of the bent legs 321. The protrusions 33 receive the electric charges of the bezel 20 and then conduct the electric charges to the two folded legs 321. The protrusions 33 are in the shape of bosses. The protrusions 33 may have a large charge receiving end surface, and the protrusions 33 are effective to receive static electricity of the bezel 20.

Further, referring to fig. 13, the circuit board 10 is a motherboard, the circuit board 10 is provided with a ground electrode 301, and the grounding metal sheet 30 is electrically connected to the ground electrode 301.

In this embodiment, the circuit board 10 is a printed circuit board. The ground electrode 301 of the circuit board 10 is electrically connected to the bent leg 321 of the grounding metal sheet 30 through a copper foil line. The ground electrode 301 has a lower potential, the decorative ring 20 is conducted with the ground electrode 301 through the capacitor b and the grounding metal sheet 30, and static electricity of the decorative ring 20 is absorbed by the ground electrode 301, so that the decorative ring 20 is not easy to generate static electricity. And the decorative ring 20 and the grounding metal sheet 30 form a capacitor b, when the grounding metal sheet 30 is accidentally introduced with a high-level current on the circuit board 10, the capacitor b blocks the high-level current, so that the decorative ring 20 is not introduced with the high-level current, and a user touches the decorative ring 20 to avoid electric shock.

Further, the bezel 20 is a camera bezel. The functional device 40 is a camera cover plate. The decorative ring 20 comprises a metal ring 23. The outer peripheral side wall of the metal ring 23 is matched with the inner peripheral side wall of the mounting hole 51, and the metal ring 23 is grounded via the grounding metal sheet 30. In one embodiment, the metal ring 23 is an elliptical ring. The functional device 40 is fixed inside the metal ring 23. The metal ring 23 and the functional device 40 together cover the mounting hole 51. The bottom of the metal ring 23 is opposite to the grounding end 31. The functional device 40 is opposite to the camera module 60 fixed on the circuit board 10.

Further, referring to fig. 14, the decorative ring 20 further includes a metal support plate 24, the metal support plate 24 is fixedly connected to the metal ring 23, the metal support plate 24 is in conduction with the metal ring 23, and the grounding capacitor b is formed between the metal support plate 24 and the grounding end 31. The metal support plate 24 is integrally formed with the metal ring 23. The top end of the metal ring 23 is exposed to the mounting hole 51. The metal ring 23 receives the electric charge and then conducts to the grounding metal plate 30 through the metal support plate 24. The inner side of the metal ring 23 is fixedly connected with the functional device 40. The metal support plate 24 supports the functional device 40. The decorative ring 20 is structurally stable with the functional device 40.

In one embodiment, the metal ring 23 extends along an elliptical racetrack-type curve. The functional device 40 covers both the camera module 60 and the flash 70. The functional device 40 transmits the photographing light of the camera module 60 and the light of the flash 70. The metal support plate 24 is provided with a camera hole 241 and a flash hole 242 corresponding to the camera module 60 and the flash 70. The flash hole 242 is spaced from the camera hole 241. The camera hole 241 shoots light through the camera. The flash hole 242 transmits flash light. The ground terminal 31 is opposite the metal support plate 24 away from the camera hole 241 and the flash hole 242.

In another embodiment, referring to fig. 15, the bezel 20 is a fingerprint module bezel. The functional device 40 is a fingerprint module cover plate. The mounting hole 51 is provided in the front cover 54. The bezel 20 is fixed in the mounting hole 51 of the front cover 54. The functional device 40 is fixed inside the bezel 20. The fingerprint module 41 is fixed on the inner side of the functional device 40.

In another embodiment, referring to fig. 16, the bezel 20 is a metal key bezel. The functional device 40 is a metal key cap. The mounting hole 51 is provided at a side portion of the back cover 56, and the bezel 20 is fixed in the mounting hole 51 of the front cover 54.

Referring to fig. 17, the present invention further provides a mobile terminal 200, where the mobile terminal 200 includes the functional component 100. The mobile terminal 200 further includes a camera module 60 and a flash 70 fixed to the circuit board 10. The mobile terminal 200 also includes other functional components that are secured to the circuit board 10. The mobile terminal 200 may be a mobile phone, a tablet computer or a notebook computer.

Claims

1. The functional component is characterized by comprising a functional device, a decorative ring sleeved on the functional device, a circuit board and a grounding metal sheet fixed on the circuit board, wherein the position, opposite to the grounding metal sheet, of the decorative ring is arranged flatly, the grounding metal sheet is provided with a grounding end far away from the circuit board, the grounding end is staggered with the decorative ring, a gap is reserved between the grounding end and the peripheral side wall of the bottom end of the decorative ring, and the grounding end and the decorative ring form a capacitor so as to realize the grounding arrangement of the decorative ring through the capacitor; the grounding metal sheet still include the bottom plate with set up in the arch of bottom plate, the bottom plate is fixed in on the circuit board, the bottom plate is equipped with two bending stabilizer blades of relative setting, bending stabilizer blade conflict in the circuit board makes grounding metal sheet ground connection, protruding set up in two between the bending stabilizer blade, the earthing terminal set up in protruding, protruding receive the charge of decorative circle and with the charge conduction is to two the bending stabilizer blade.

2. The functional assembly according to claim 1, further comprising a housing provided with a mounting hole extending from an outside to an inside, the bezel and the functional device being fixed to the mounting hole, the circuit board and the ground metal sheet being both fixed to an inside of the housing.

3. The functional assembly of claim 2, wherein an end of the bezel remote from the ground strap exposes the mounting aperture.

4. The functional module of claim 2, wherein a support flange is provided on an inner side of the mounting hole, and the support flange supports the bezel on a side away from the circuit board.

5. The functional assembly of claim 4, wherein an adhesive bond is provided between the support flange and the decorative ring.

6. The functional assembly of claim 1, wherein the circuit board is provided with a ground electrode, and the grounding metal plate is electrically connected to the ground electrode.

7. The functional assembly according to any one of claims 1 to 6, wherein the decorative ring is a camera decorative ring and the functional device is a camera cover plate.

8. The functional assembly of claim 7, wherein the bezel comprises a metal ring having an outer peripheral sidewall that mates with an inner peripheral sidewall of the mounting aperture, the metal ring being grounded via the grounding metal plate.

9. The functional assembly of claim 8, wherein the metal ring extends along an elliptical racetrack-type curve.

10. The functional assembly of claim 8, wherein the decorative ring further comprises a metal support plate fixedly connected to the metal ring, the metal support plate in communication with the metal ring, the metal support plate and the ground terminal forming a ground capacitor therebetween.

11. The functional module of claim 10, wherein the metal support plate is provided with a camera hole for capturing light through the camera.

12. The functional assembly of claim 11, wherein the ground end faces the metal support plate away from the camera aperture.

13. The functional assembly of claim 11, wherein the support plate is further provided with a flash hole spaced from the camera, the flash hole configured to transmit flash light.

14. The functional module according to any one of claims 1 to 6, wherein the decorative ring is a fingerprint module decorative ring, and the functional device is a fingerprint module cover plate.

15. The functional assembly of claim 14, wherein a side of the functional device facing the circuit board is configured to secure a fingerprint module.

16. A mobile terminal, characterized in that it comprises the functional component of any one of claims 1-15.