CN108600926B

CN108600926B - Front shell assembly

Info

Publication number: CN108600926B
Application number: CN201810570774.6A
Authority: CN
Inventors: 李琳; 罗剑; 戴强武
Original assignee: Shanghai Moruan Communication Technology Co Ltd
Current assignee: Shanghai Moruan Communication Technology Co Ltd
Priority date: 2018-06-05
Filing date: 2018-06-05
Publication date: 2024-12-31
Anticipated expiration: 2038-06-05
Also published as: CN108600926A

Abstract

The present invention discloses a front shell assembly, which includes a terminal front shell and a handset, wherein the terminal front shell has a bottom wall and a side frame, wherein the side frame has an upper side wall located in the width direction of the terminal front shell, and the handset includes a handset holder. The area near the upper side wall in the bottom wall has a receiving space, and the receiving space runs through the bottom wall along the thickness direction of the terminal front shell. The handset holder is embedded in the receiving space and is integrally formed with the terminal front shell. The present invention does not need to set two positioning ribs and an avoidance gap between the positioning ribs and the handset, which reduces the distance between the lower side of the handset and the upper side wall of the terminal front shell, reduces the area that needs to be shielded by the non-light-transmitting area of the front cover of the mobile terminal, and reduces the width of the non-light-transmitting area in the length direction of the front shell assembly, thereby reducing the black border area on the upper part of the mobile terminal and increasing the display area ratio of the front cover of the mobile terminal.

Description

Front shell assembly

Technical Field

The invention relates to the field of electronic equipment, in particular to a front shell assembly.

Background

With the development of science and technology, electronic devices such as mobile terminals (e.g., mobile phones) have been greatly popularized and become an integral part of people's work and life. Meanwhile, to meet the needs of consumers, these mobile terminals generally have various audiovisual entertainment functions such as playing videos and listening to songs. Along with the improvement of living standard, the requirements of users on the functions and the design of electronic devices such as mobile terminals are increasing.

Referring now to fig. 1-2, a front housing assembly 1 'of a mobile terminal generally includes a front housing 2' and an earpiece, the front housing 2 'has a bottom wall 20' and a side frame 21 'surrounding the bottom wall 20', the side frame 21 'has an upper side wall 22' located in a width direction of the front housing 2', an annular positioning frame 23' is disposed at a region of a back surface of the bottom wall 20 'adjacent to the upper side wall 22', the earpiece is embedded in the annular positioning frame 23', the annular positioning frame 23' has two positioning ribs 24 'disposed opposite to each other along a length direction of the front housing 2', and the two positioning ribs 24 'are respectively located at two sides of the earpiece and are both located in the width direction of the front housing 2'.

However, the structure has the following defects that two positioning ribs are distributed on two sides of the earphone in the length direction of the front shell of the terminal, an avoidance gap is formed between the positioning ribs and the earphone, the distance between the positioning ribs positioned below and the upper side wall of the front shell of the terminal is large, and the width of the non-light-transmitting area in the length direction of the front shell component is large due to the fact that the non-light-transmitting area of the front cover of the mobile terminal is large in the area, so that the black edge area on the upper part of the mobile terminal is large, and the display area occupation ratio of the front cover of the mobile terminal is reduced.

Disclosure of Invention

The invention aims to overcome the defects that the black edge area at the upper part of a mobile terminal is larger and the display area occupation ratio of the front cover of the mobile terminal is reduced caused by a traditional front shell component of the mobile terminal in the prior art.

The invention solves the technical problems by the following technical scheme:

A front housing assembly for a mobile terminal, the front housing assembly comprising a terminal front housing having a bottom wall and a side frame surrounding the bottom wall, the side frame having an upper side wall located in a width direction of the terminal front housing, and an earpiece comprising an earpiece holder;

The region of the bottom wall, which is close to the upper side wall, is provided with an accommodating space, the accommodating space penetrates through the bottom wall along the thickness direction of the terminal front shell, and the earphone bracket is embedded in the accommodating space and is integrally formed with the terminal front shell.

In this scheme, earphone support and terminal front shroud integrated into one piece need not to set up the clearance of dodging between two location ribs and location rib and the earphone in addition, and this makes the downside of earphone and the distance between the last lateral wall of terminal front shroud reduce, and the required region that shields of the non-light-transmitting zone of mobile terminal's protecgulum reduces for the width of non-light-transmitting zone in the length direction of preceding shell subassembly reduces, thereby makes the black limit area on mobile terminal upper portion reduce, has improved the display area ratio of mobile terminal's protecgulum.

Optionally, the earpiece holder abuts the upper sidewall. This can further reduce the distance between the underside of the earpiece and the upper side wall of the front housing of the terminal, thereby reducing the area of the front cover of the mobile terminal that is required to be shielded from light.

Optionally, the earpiece holder is integrally formed with the front terminal housing by an injection molding process. Simple process, low production cost and high structural strength.

Optionally, the front face of the earpiece holder is flush with the front surface of the bottom wall of the adjacent terminal front shell.

In this scheme, the front end face of earphone support is parallel and level with the front surface of the diapire of adjacent terminal front housing, is convenient for the direct processing shaping have the terminal front housing of earphone support like this, and is convenient for with the other parts assembly of earphone to earphone support.

Optionally, the earphone bracket is provided with a mounting groove, and the mounting groove penetrates through the earphone bracket along the thickness direction of the front terminal shell;

the earphone further comprises magnetic steel, a sound module, an earphone front cover and earphone foam which are sequentially arranged from back to front along the thickness direction of the terminal front shell, wherein the magnetic steel, the sound module and the earphone front cover are all fixed in the mounting groove, and the magnetic steel and the sound module are arranged at intervals;

The earphone foam is fixed on the earphone front cover and is positioned outside the mounting groove, a sound cavity is formed around the earphone foam, the earphone front cover and the sound mould, and the earphone foam is provided with a sound playing hole communicated with the sound cavity.

Optionally, the foam of the earphone is fixed on the front cover of the earphone through a dispensing process;

The earphone front cover and/or the voice mould are/is fixed in the mounting groove through a dispensing process.

In the scheme, the dispensing process is adopted, so that the process is simple, the sealing effect of the sound cavity can be ensured, and further sound is ensured to be transmitted out through the sound playing hole in a concentrated manner.

Optionally, the magnetic steel is in interference fit with the mounting groove. Therefore, the firmness and stability of the magnetic steel connection can be ensured, and the disassembly and assembly of the magnetic steel can be realized conveniently.

Optionally, the earphone further includes an elastic connecting piece, one end of the elastic connecting piece is electrically connected with the sound module, the other end of the elastic connecting piece extends out of the rear end face of the earphone bracket and is used for being electrically connected with a main board of the mobile terminal, and the other end of the elastic connecting piece is provided with a strip-shaped protrusion.

In this scheme, rectangular bellied setting is favorable to reducing the frictional force between elastic connection spare and the mainboard to improve the tone quality of earphone.

Optionally, the voice module includes a voice coil and a diaphragm, the voice coil is connected to the diaphragm, and one end of the elastic connection member is electrically connected to the voice coil.

Optionally, the earphone further includes a conductive component, where the conductive component is fixed on the magnetic steel and electrically connected with the magnetic steel, and the conductive component is electrically connected with the motherboard of the mobile terminal.

In the scheme, the magnetic steel of the earphone is conducted with the main board through the conductive component, so that the magnetic steel is grounded, and the influence of the earphone on the performance of a nearby radio frequency antenna is reduced.

The invention has the positive progress effects that:

According to the front shell assembly, the earphone bracket and the front shell of the terminal are integrally formed, two positioning ribs and an avoidance gap between the positioning ribs and the earphone are not required, so that the distance between the lower side surface of the earphone and the upper side wall of the front shell of the terminal is reduced, the area required to be shielded by the non-light-transmitting area of the front cover of the mobile terminal is reduced, the width of the non-light-transmitting area in the length direction of the front shell assembly is reduced, the black edge area at the upper part of the mobile terminal is reduced, and the display area occupation ratio of the front cover of the mobile terminal is improved.

Drawings

Fig. 1 is a schematic view of a part of a structure of a conventional front case assembly.

Fig. 2 is a schematic view showing a part of the structure of a terminal front case of a conventional front case assembly.

Fig. 3 is a schematic view of a part of a front case assembly according to an embodiment of the present invention.

Fig. 4 is a schematic partial perspective view of a front housing assembly according to an embodiment of the present invention, in which a rear structure of the front housing assembly is mainly shown.

Fig. 5 is a schematic structural view of an earpiece foam of a front shell assembly in accordance with an embodiment of the present invention.

Description of the reference numerals

Prior Art

Front shell assembly 1'

Front shell of terminal 2'

Bottom wall 20'

Side frame 21'

Upper side wall 22'

Annular locating rack 23'

Positioning rib 24'

Earphone 3'

The invention is that

Front case assembly 1

Front shell of terminal 2

Bottom wall 20

Front surface 200

Side frame 21

Upper side wall 22

Earphone 3

Earphone support 30

Mounting groove 300

Front end face 301

Magnetic steel 31

Sound mould 32

Voice coil 320

Vibrating diaphragm 321

Earphone front cover 33

Foam of earphone 34

Playback hole 340

Sound cavity 35

Elastic connector 36

Length direction of front case of terminal L

Width direction of front case of terminal W

Thickness direction of front case of terminal T

Detailed Description

The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.

Fig. 3 and 4 show a schematic structure of a front case assembly 1 according to an embodiment of the present invention. As shown in fig. 3-4, the front housing assembly 1 is for a mobile terminal. In this embodiment, the mobile terminal may be a mobile phone or a tablet computer. The front housing assembly 1 comprises a terminal front housing 2 and an earpiece 3. In this embodiment, the earpiece 3 is disposed at the upper end of the mobile terminal (i.e. the upper end along the length direction of the mobile terminal and located at the upper end of the display area of the mobile terminal), so that the earpiece 3 can be close to the ear of the user during answering, and the sound is louder and clearer.

Wherein the earpiece 3 comprises an earpiece holder 30. The front terminal housing 2 has a bottom wall 20 and a side frame 21 surrounding the bottom wall 20. The side frames 21 have upper side walls 22 located in the width direction W of the terminal front case. The bottom wall 20 has a receiving space (not shown) in a region adjacent to the upper side wall 22. The receiving space extends through the bottom wall 20 in the thickness direction T of the front terminal case. The earphone bracket 30 is embedded in the accommodating space and is integrally formed with the front terminal housing 2.

The earphone bracket 30 and the front terminal shell 2 are integrally formed, two positioning ribs and an avoidance gap between the positioning ribs and the earphone 3 are not required to be additionally arranged, the distance between the lower side surface of the earphone 3 and the upper side wall 22 of the front terminal shell 2 is reduced, the area required to be shielded by a non-light-transmitting area of the front cover of the mobile terminal is reduced, the width of the non-light-transmitting area in the length direction (parallel to the length direction L of the front terminal shell) of the front terminal shell component 1 is reduced, the black edge area on the upper part of the mobile terminal is reduced, and the display area ratio of the front cover of the mobile terminal is improved.

Specifically, the earpiece holder 30 is integrally formed with the terminal front shell 2 by an injection molding process. Simple process, low production cost and high structural strength. In the present embodiment, the earpiece holder 30 is made of the same material as the front terminal housing 2. During the processing, the earpiece holder 30 part of the earpiece 3 is processed in the terminal front shell 2 by an injection molding process. After the injection molding is completed, the other parts of the earpiece 3 are assembled to the earpiece holder 30 in the front terminal housing 2.

Further, the earpiece holder 30 abuts the upper side wall 22. This enables a further reduction in the distance between the underside of the earpiece 3 and the upper side wall 22 of the front terminal housing 2, thereby enabling a reduction in the area of the front cover of the mobile terminal that is required to be shielded from light.

Still further, the front face 301 of the earpiece holder 30 is flush with the front surface 200 of the bottom wall 20 of the adjacent terminal front shell 2. This facilitates direct machining of the front terminal housing 2 with the earpiece holder 30 and facilitates assembly of the remaining components of the earpiece 3 to the earpiece holder 30.

In addition, the earpiece holder 30 is provided with a mounting groove 300, and the mounting groove 300 penetrates the earpiece holder 30 in the thickness direction T of the terminal front case. The earpiece 3 further comprises a magnetic steel 31, a sound pattern 32, an earpiece front cover 33 and an earpiece foam 34 which are arranged in sequence from back to front along the thickness direction T of the front terminal shell. The magnetic steel 31, the sound mold 32 and the earphone front cover 33 are all fixed in the mounting groove 300, and the magnetic steel 31 and the sound mold 32 are arranged at intervals. In this embodiment, the magnetic steel 31 and the mounting groove 300 are in interference fit. Therefore, the firmness and stability of the connection of the magnetic steel 31 can be ensured, and the disassembly and assembly of the magnetic steel 31 can be realized conveniently.

The earpiece foam 34 is fixed to the earpiece front cover 33 and is located outside the mounting groove 300. The earphone foam 34, the earphone front cover 33 and the sound module 32 are surrounded by a sound cavity 35. As will be appreciated in connection with fig. 5, the earpiece foam 34 is provided with a sound reproducing aperture 340 in communication with the sound cavity 35.

The earpiece foam 34 is fixed to the earpiece front cover 33 through a dispensing process. The earpiece front cover 33 and the voice die 32 are both fixed to the mounting groove 300 by a dispensing process. By adopting the dispensing process, the process is simple, the sealing effect of the sound cavity 35 can be ensured, and the sound is further ensured to be concentrated and transmitted out through the sound playing hole 340. In alternative embodiments, the earpiece front cover 33 is fixed to the mounting groove 300 by a dispensing process, or the speaker 32 is fixed to the mounting groove 300 by a dispensing process.

As shown in fig. 3-4, the earpiece 3 further comprises a resilient connection 36. One end of the elastic connection member 36 is electrically connected to the sound module 32, and the other end of the elastic connection member 36 extends out of the rear end surface of the earpiece holder 30 and is used for electrical connection with a main board (not shown) of the mobile terminal. And the other end of the elastic connection member 36 is provided with an elongated protrusion (not shown). This is advantageous in reducing the friction between the resilient connecting element 36 and the main board and thereby improving the sound quality of the earpiece 3. The elongated protrusions may be formed by die stamping, so that the elastic connecting member 36 is manufactured by only modifying the shape of the die, without increasing the cost. In the present embodiment, the elastic connection member 36 is a metal spring.

The acoustic module 32 includes a voice coil 320 and a diaphragm 321, the voice coil 320 is connected to the diaphragm 321, and one end of the elastic connection member 36 is electrically connected to the voice coil 320. When in use, the audio signal of the main board is input to the voice coil 320 through the elastic connecting piece 36, the magnetic field of the voice coil 320 itself is changed to vibrate, so as to drive the vibrating membrane 321 to vibrate to sound, and the sound is transmitted from the sound reproducing hole 340.

The earpiece 3 further comprises a conductive member (not shown in the figures) fixed to the magnetic steel 31 and electrically connected to the magnetic steel 31, and electrically connected to the motherboard of the mobile terminal. In the scheme, the magnetic steel 31 of the earphone 3 is conducted with the main board through the conductive component, so that the magnetic steel 31 is grounded, and the influence of the earphone 3 on the performance of a nearby radio frequency antenna is reduced. In this embodiment, the conductive member is a conductive cloth.

According to the design characteristics of the radio frequency antenna of the mobile terminal product, metal devices around the radio frequency antenna need to be grounded to reduce the influence of the metal devices on the performance of the radio frequency antenna. The earphone 3 of the embodiment is grounded to the exposed copper on the motherboard through a conductive cloth. When the earphone 3 is in a working state, the magnetic steel 31 of the earphone 3 is conducted with the main board through the conductive cloth, so that the magnetic steel 31 of the earphone 3 is grounded, and the influence of the earphone 3 on the performance of a nearby radio frequency antenna is reduced.

In describing the present invention, an embodiment may be provided with a plurality of drawings, and reference numerals of the same components in the same embodiment are not necessarily indicated in each of the drawings, but it should be understood by those skilled in the art that when one or more drawings in the embodiment are described, it may be understood with reference to other drawings in the embodiment, and it may be understood by those skilled in the art that when it is not indicated what drawing the text specifically corresponds to, it may be understood with reference to all the drawings in the embodiment.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims

1. A front housing assembly for a mobile terminal, the front housing assembly including a terminal front housing and an earpiece, the terminal front housing having a bottom wall and surrounding in a side frame of the bottom wall, the side frame having an upper side wall located in a width direction of the terminal front housing, the earpiece comprising an earpiece holder, characterized in that:

the region, close to the upper side wall, of the bottom wall is provided with an accommodating space, the accommodating space penetrates through the bottom wall along the thickness direction of the terminal front shell, and the earphone bracket is embedded in the accommodating space and is integrally formed with the terminal front shell;

The earphone bracket is provided with a mounting groove, and the mounting groove penetrates through the earphone bracket along the thickness direction of the front terminal shell;

The earphone also comprises magnetic steel, a sound mould, an earphone front cover and earphone foam which are sequentially arranged in the thickness direction of the terminal front shell, wherein the magnetic steel is far away from the upper side wall relative to the sound mould, the earphone front cover and the earphone foam, the magnetic steel, the sound mould and the earphone front cover are all fixed in the mounting groove, the sound mould comprises a voice coil and a vibrating diaphragm, and the voice coil is connected to the vibrating diaphragm.

2. The front housing assembly of claim 1, wherein the earpiece support abuts the upper sidewall.

3. The front housing assembly of claim 1, wherein the earpiece support is integrally formed with the terminal front housing by an injection molding process.

4. The front housing assembly of claim 1, wherein the front face of the earpiece support is flush with a front surface of the bottom wall of the adjacent terminal front housing.

5. The front housing assembly of claim 1, wherein the magnetic steel is spaced from the acoustic die;

6. The front housing assembly of claim 5, wherein the earpiece foam is secured to the earpiece front cover by a dispensing process;

7. The front housing assembly of claim 5, wherein the magnetic steel is an interference fit with the mounting groove.

8. The front housing assembly of claim 5, wherein the earpiece further comprises an elastic connection member, one end of the elastic connection member is electrically connected with the sound module, the other end of the elastic connection member extends out of the rear end surface of the earpiece holder and is used for being electrically connected with a main board of the mobile terminal, and the other end of the elastic connection member is provided with an elongated protrusion.

9. The front housing assembly of claim 8, wherein one end of the elastic connection member is electrically connected to the voice coil.

10. The front housing assembly of claim 5, wherein the earpiece further comprises a conductive member secured to and electrically connected with the magnetic steel, and the conductive member is electrically connected with a motherboard of the mobile terminal.