CN107172241B - Functional module and mobile terminal - Google Patents

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 components and mobile terminals

technical field

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

Background technique

At present, there is an exposed decorative ring on the outside of the mobile phone. When users touch the decorative ring, they are prone to problems such as electric shock or static discharge, resulting in potential safety hazards for mobile phones. The current approach to such safety issues is to set grounding shrapnel inside the mobile phone against the decorative ring, so that the decorative ring is grounded, thereby avoiding electric shock or static discharge. However, under this structure, the grounding shrapnel has elastic resistance to the decorative ring, causing the decorative ring to be stressed, and the structure of the decorative ring is unstable under the force, thereby reducing user experience.

Contents of the invention

The purpose of the present invention is to provide a functional component and a mobile terminal that improve user experience.

In order to solve the above technical problems, the present invention provides a functional assembly, wherein the functional assembly includes a functional device, a decorative ring and a circuit board sleeved on the functional device, and a grounding metal sheet fixed to the circuit board The grounding metal sheet has a grounding terminal far away from the circuit board, and the grounding terminal forms a capacitance with the decorative ring, so as to realize the grounding setting of the decorative ring.

The present invention also provides a mobile terminal, wherein the mobile terminal includes the above functional components.

In the functional component and the mobile terminal provided by the present invention, a gap is provided between the grounding end of the grounding metal sheet and the decorative ring, and the grounding metal sheet and the decorative ring jointly form a capacitor to realize the grounding of the decorative ring. Moreover, the ground metal sheet does not exert any resistance force to the decoration ring, and the structure of the decoration ring will not be unstable due to force, which improves user experience.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the implementation. Obviously, the drawings in the following description are some implementations of the present invention, which are common to those skilled in the art. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

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

Fig. 2 is a schematic circuit structure diagram of functional components provided by an embodiment of the present invention;

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

Fig. 4 is a side exploded schematic diagram of functional components provided by an embodiment of the present invention;

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

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

Fig. 7 is another partial cross-sectional schematic diagram of a functional component provided by an embodiment of the present invention;

Fig. 8 is a partial cross-sectional schematic diagram of a functional component provided by another embodiment of the present invention;

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

Fig. 10 is another partial cross-sectional schematic diagram of a functional component provided by an embodiment of the present invention;

Fig. 11 is a schematic perspective view of a grounding metal sheet of a functional component provided by another embodiment of the present invention;

Fig. 12 is a schematic perspective view of a grounding metal sheet of a functional component provided by an embodiment of the present invention;

Fig. 13 is another partial perspective exploded schematic view of the functional components provided by the embodiment of the present invention;

Fig. 14 is another partial perspective exploded schematic view of the functional components provided by the embodiment of the present invention;

Fig. 15 is another schematic front view of functional components provided by another embodiment of the present invention;

Fig. 16 is another schematic side view of functional components provided by another embodiment of the present invention;

Fig. 17 is an exploded perspective view of a mobile terminal provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the term "thickness" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying Or an indication that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

Please refer to Fig. 1 and Fig. 2, the present invention provides a functional assembly 100, the functional assembly 100 includes a circuit board 10 and a decorative ring 20 fixed relative to the circuit board 10, and fixed on the circuit board 10 toward the The grounding metal sheet 30 on one side of the decorative ring 20, the grounding metal sheet 30 has a grounding end 31 away from the circuit board 10, there is a gap a between the grounding end 31 and the decorative ring 20, so that the The decorative ring 20 and the ground metal sheet 30 form a capacitance b, and the decorative ring 20 is grounded. The functional component 100 further includes a functional device 40 , and the decorative ring 20 is sleeved on the functional device 40 . It can be understood that the functional component 100 is applied to a mobile terminal, which may be a mobile phone, a tablet computer, or a notebook computer. The decorative ring 20 is an external structural part of the mobile terminal. When a user uses the mobile terminal, it is easy to touch the decorative ring 20 . The decorative ring 20 is grounded through the grounding metal sheet 30 to increase safety.

A gap a is set between the ground end 31 of the ground metal sheet 30 and the decorative ring 20, the decorative ring 20 and the ground metal sheet 30 form a capacitor b, and the decorative ring 20 passes through the capacitor b Being grounded, the grounding metal sheet 30 does not exert any resistance to the decorative ring 20, and the decorative ring 20 will not be structurally unstable due to force, which improves user experience.

In this embodiment, the circuit board 10 includes a first surface 11 and a second surface 12 opposite to the first surface 11 . The first surface 11 faces the decoration ring 20 , and the ground 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 so that there is always a gap between the ground metal sheet 30 and the decorative ring 20 . Moreover, the ground metal sheet 30 is conveniently electrically connected to the ground electrode 301 through the circuit board 10 . In one embodiment, the circuit board 10 may be independent from 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 line 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 through a bracket, or may be fixed to the circuit board 10 through a casing. The decorative ring 20 and the grounding metal sheet 30 are flatly arranged, so that the decorative ring 20 can effectively transfer charges to the grounding metal sheet 30, avoiding a gap between the decorative ring 20 and the grounding metal sheet 30. An arc is generated between them, which improves the safety. The ground metal sheet 30 is flatly arranged on one end surface of the decorative ring 20 . The functional device 40 may be a glass cover, a button, or a decorative cover, and the decorative ring 20 absorbs static electricity to prevent static electricity from being transmitted to the functional module through the functional device 40, thereby improving safety.

Further, please refer to FIG. 3 , the functional component 100 also 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 in the mounting hole 51, the circuit Both the plate 10 and the ground metal sheet 30 are fixed inside the casing 50 .

In this embodiment, the housing 50 has an outer surface 52 and an inner surface 53 disposed opposite to the outer surface. The installation hole 51 extends from the outer surface 52 to the inner surface 53 . The shell 50 can be the battery back cover of the mobile phone, the front cover of the mobile phone or the middle frame of the 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 . There is a distance between the first surface 11 and the inner surface 53 . The decorative ring 20 may partially cover the installation hole 51 and cover the installation hole 51 in conjunction with other cover plates. The decorative ring 20 can also completely cover the installation hole 51 . The shell 50 and the decorative ring 20 protect the ground metal sheet 30 .

In one embodiment, please refer to FIG. 4 and FIG. 5 , the housing 50 includes a front cover 54 , a middle 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 on the middle frame 55 . The second surface 12 of the circuit board 10 faces the middle frame 54 . The installation hole 51 is disposed on 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 slits 561 extending in parallel along the width direction of the back cover 56, and the two antenna slits 561 separate the back cover 56 into a first area 562, a second area 563 and a third area 564. The installation hole 51 may be located in the first area 562 , or the second area 563 , or the third area 564 . The decorative ring 20 may be a decorative part or a functional part fixed on the back cover 56 . The decoration ring 20 and the functional device 40 jointly cover the installation hole 51 .

In another embodiment, please refer to FIG. 6 , the installation hole 51 is disposed on the front cover 54 and is located at one end of the front cover 54 in the longitudinal direction. The front cover 54 has a display area 541 and non-display areas 542 located at two ends of the display area 541 in the lengthwise direction. The installation hole 51 is located in the non-display area 542 . The installation hole 51 reduces the display area loss of the display area 541 and improves the appearance performance of the front cover 54 . The decorative ring 20 may be a decorative part or a functional part fixed on the front cover 54 .

Further, please refer to FIG. 7 , FIG. 8 and FIG. 9 , the end of the decorative ring 20 away from the ground metal sheet 30 exposes the installation 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 installation hole 51 , and the decorative ring 20 decorates the casing 50 , so that the casing 50 partially presents a metal appearance effect. At the same time, the decorative ring 20 enhances the stability of the local structure of the casing 50 .

In one embodiment, as shown in FIG. 7 , the bottom end 22 is located in the installation hole 51 . The gap a exists between the ground end 31 and the bottom end 22 . The ground end 31 is opposite to the bottom end 22 . The ground terminal 31 can be accommodated in the installation hole 51 , so that the distance from the first surface 11 to the inner surface 53 is reduced, and the overall thickness of the functional component 100 is reduced, which improves user experience.

In another embodiment, as shown in FIG. 8 , the bottom end 22 exposes the installation hole 51 . The gap a exists between the ground end 31 and the bottom end 22 . The ground end 31 is opposite to the end face of the bottom end 22 . The outer peripheral sidewall of the decorative ring 20 is in interference fit with the inner peripheral sidewall of the installation hole 51 , which increases the contact area between the decorative ring 20 and the back cover 56 . The decorative ring 20 and the back cover 56 are structurally stable.

In another embodiment, as shown in FIG. 9 , the bottom end 22 exposes the installation hole 51 . The gap a exists between the ground end 31 and the peripheral sidewall of the bottom end 22 . The grounding end 31 is offset from the decorative ring 20 , and the grounding end 31 is closer to the inner surface 53 . The distance from the first surface 11 to the inner surface 53 is reduced, and the overall thickness of the functional component 100 is reduced, which improves user experience.

Further, referring to FIG. 10 , a supporting flange 511 is provided inside the mounting hole 51 , and the side of the supporting flange 511 away from the circuit board 10 supports the decoration ring 20 .

In this embodiment, the supporting flange 511 extends circumferentially along the installation hole 51 . The supporting flange 511 is located inside the opening end of the mounting hole 51 on the inner surface 53 . The supporting flange 511 has a supporting surface 512 facing the opening of the mounting hole 51 on the outer surface 52 . The supporting surface 512 is provided with a double-sided adhesive tape 513 . The end surface of the bottom end 22 of the decorative ring 20 is bonded to the supporting flange 511 by the double-sided adhesive 513 . The decorative ring 20 and the back cover 56 are structurally stable. The decorative ring 20 can withstand relatively high pressure. There is the gap a between the ground metal sheet 30 and the decorative ring 20, the ground metal sheet 30 does not exert any resistance force towards the outer surface 52 on the decorative ring 20, and the decorative ring 20 is not easy to Pushed out of the mounting hole 51 , the double-sided adhesive tape 513 is effectively bonded to the decorative ring 20 .

Further, referring to FIG. 11 and FIG. 12 , the ground 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 part. The bottom plate 32 is provided with two opposite bent legs 321 along the length direction. The bending leg 321 is in contact with 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 collide with the grounding copper foil on the first surface 11 , so that the grounding metal sheet 30 is grounded. The bottom 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 edge of the bottom plate 32 between two bending legs 321 toward the decorative ring 20 . The ground metal sheet 30 has a simple structure, which facilitates the manufacture of the ground metal sheet 30 and reduces production costs.

In another embodiment, as shown in FIG. 12 , the protrusion 33 is disposed between two bending legs 321 . The protrusion 33 receives the charge of the decoration ring 20 and conducts it to the two bending legs 321 . The protrusion 33 is in the shape of a boss. The protrusion 33 may have a larger charge receiving end surface, and the protrusion 33 effectively receives the static electricity of the decoration ring 20 .

Further, please refer to FIG. 13 , the circuit board 10 is a main board, the circuit board 10 is provided with a ground electrode 301 , and the ground 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 ground metal sheet 30 through a copper foil circuit. The potential of the ground electrode 301 is low, the decorative ring 20 is connected to the ground electrode 301 through the capacitor b and the grounding metal sheet 30, the static electricity of the decorative ring 20 is absorbed by the ground electrode 301, This makes the decorative ring 20 less likely to generate static electricity. Moreover, the decorative ring 20 and the grounding metal sheet 30 form a capacitor b, and when the grounding metal sheet 30 is accidentally introduced into 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 a high-level current, and it is difficult for a user to get an electric shock when touching the decorative ring 20 .

Further, the decorative ring 20 is a camera decorative ring. The functional device 40 is a camera cover. The bezel 20 includes a metal ring 23 . The outer peripheral sidewall of the metal ring 23 matches the inner peripheral sidewall of the installation hole 51 , and the metal ring 23 is grounded through the grounding metal sheet 30 . In one embodiment, the metal ring 23 is an oval ring. The functional device 40 is fixed inside the metal ring 23 . The metal ring 23 and the functional device 40 jointly cover the installation hole 51 . The bottom of the metal ring 23 is opposite to the ground terminal 31 . The functional device 40 is facing the camera module 60 fixed on the circuit board 10 .

Further, please refer to FIG. 14 , the decorative ring 20 also includes a metal support plate 24, the metal support plate 24 is fixedly connected to the metal ring 23, and the metal support plate 24 is connected to the metal ring 23, The ground capacitor b is formed between the metal support plate 24 and the ground terminal 31 . The metal support plate 24 is integrally formed with the metal ring 23 . The top end of the metal ring 23 exposes the installation hole 51 . The metal ring 23 conducts the charge to the ground metal sheet 30 through the metal support plate 24 after receiving the charge. The inner side of the metal ring 23 is fixedly connected to the functional device 40 . The metal support plate 24 supports the functional device 40 . The decorative ring 20 and the functional device 40 are structurally stable.

In one embodiment, the metal ring 23 extends along an elliptical racetrack-shaped curve. The functional device 40 covers the camera module 60 and the flash 70 at the same time. The functional device 40 passes through the shooting light of the camera module 60 and the light of the flashlight 70 . The metal support plate 24 is provided with a camera hole 241 and a flash light hole 242 corresponding to the camera module 60 and the flash light 70 . The flash hole 242 is spaced apart from the camera hole 241 . The camera hole 241 captures light through the camera. The flash hole 242 transmits light from the flash. The ground terminal 31 is facing the metal support plate 24 away from the camera hole 241 and the flash hole 242 .

In another embodiment, please refer to FIG. 15 , the decorative ring 20 is a fingerprint module decorative ring. The functional device 40 is a fingerprint module cover. The installation hole 51 is disposed on the front cover 54 . The decoration ring 20 is fixed in the installation hole 51 of the front cover 54 . The functional device 40 is fixed inside the decorative ring 20 . The fingerprint module 41 is fixed inside the functional device 40 .

In another embodiment, please refer to FIG. 16 , the decorative ring 20 is a metal button decorative ring. The functional device 40 is a metal keycap. The mounting hole 51 is disposed on a side of the back cover 56 , and the decorative ring 20 is fixed in the mounting hole 51 of the front cover 54 .

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

In the functional component and the mobile terminal provided by the present invention, a gap is provided between the grounding end of the grounding metal sheet and the decorative ring, and the grounding metal sheet and the decorative ring jointly form a capacitor to realize the grounding of the decorative ring. Moreover, the ground metal sheet does not exert any resistance force to the decoration ring, and the structure of the decoration ring will not be unstable due to force, which improves user experience.

Claims (16)

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.