WO2021056772A1

WO2021056772A1 - Housing assembly and mobile terminal

Info

Publication number: WO2021056772A1
Application number: PCT/CN2019/119530
Authority: WO
Inventors: 程超; 樊志超
Original assignee: 掌阅科技股份有限公司; 深圳市掌阅科技有限公司
Priority date: 2019-09-29
Filing date: 2019-11-19
Publication date: 2021-04-01
Also published as: CN210377227U

Abstract

A housing assembly and a mobile terminal. The housing assembly comprises a housing (1), a sound cavity assembly (2), and an electromagnetic shielding piece (3); a front surface of the housing (1) is provided with a display area (11), a back surface of the housing (1) is provided with a first mounting groove (12), and a speaker area (13) is provided in the first mounting groove (12); the sound cavity assembly (2) comprises a sound cavity housing (21) and a speaker provided in the sound cavity, the sound cavity housing (21) is provided in the first mounting groove (12), and the speaker directly faces the speaker area (13); the electromagnetic shielding piece (3) comprises a shielding piece (31), and the shielding piece (31) is provided between the speaker area (13) and the display area (11) and is used for shielding electromagnetic interference of the speaker area (13) to the display area (11).

Description

Shell assembly and mobile terminal

Cross reference of related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 2019216527287 and titled "Housing Assembly and Mobile Terminal" on September 29, 2019, the entire content of which is incorporated into this application by reference.

Technical field

The present disclosure relates to the technical field of electronic display devices, and in particular to a housing assembly and a mobile terminal.

Background technique

In some mobile terminals, such as a reader with a handwriting function, the handwriting function is implemented based on the principle of electromagnetic induction. An electromagnetic film or plate with the same size as the screen is arranged on the back of the screen of the reader, electromagnetic induction is formed between the stylus pen and the electromagnetic film or plate, and the movement track of the stylus can be sensed through the electromagnetic film or plate. However, most readers have speakers in order to realize the audio playback function, and the electromagnetic field generated by the speakers easily interferes with the electromagnetic film and interferes with the coordinate data of the movement track of the stylus.

Summary of the invention

Based on this, it is necessary to provide a housing assembly and a mobile terminal to solve the problem that the speaker interferes with the movement track coordinate data of the stylus in the mobile terminal.

In order to solve the above technical problems, the present disclosure provides a housing assembly, which includes a housing, a sound cavity assembly, and an electromagnetic shield;

A display area is provided on the front of the housing, a first installation groove is provided on the back of the housing, and a speaker area is provided in the first installation groove;

The sound cavity assembly includes a sound cavity shell and a speaker arranged in the sound cavity, the sound cavity shell is arranged in the first installation groove, and the speaker faces the loudspeaker area;

The electromagnetic shielding component includes a shielding sheet, which is arranged between the speaker area and the display area, and is used for shielding electromagnetic interference from the speaker area to the display area.

In the housing assembly, the content written by the stylus on the screen is obtained by electromagnetic membrane induction to obtain the coordinate data of the handwriting, and the coordinate data is transmitted to the main chip. The main chip outputs the written image after data processing and passes through the display screen of the reader To display. In the present disclosure, a shielding sheet is arranged between the speaker area and the display area, thereby shielding the electromagnetic field emitted from the speaker area, that is, shielding the electromagnetic field emitted from the speaker, and avoiding electromagnetic induction between the electromagnetic field emitted by the speaker and the electromagnetic film , Finally avoiding the speaker from interfering with the movement track coordinate data of the stylus.

In one of the embodiments, a non-display area is further provided on the front surface of the housing, the first installation groove is facing the non-display area, and the shielding sheet is disposed on the first side wall of the first installation groove.

In one of the embodiments, the first side wall is provided with a accommodating groove for accommodating the shielding sheet, and the shielding sheet is disposed in the accommodating groove.

In one of the embodiments, a second mounting groove is provided at a position corresponding to the display area on the front of the housing, and the second mounting groove is recessed from the front of the housing to the back of the housing;

The first mounting groove is recessed from the back of the housing to the front of the housing.

In one of the embodiments, the electromagnetic shielding member further includes a fixing sheet, one end of the fixing sheet is connected to the shielding sheet, and the other end of the fixing sheet is fixedly connected to the back of the housing.

In one of the embodiments, one side edge of the fixing piece is connected to one side edge of the shielding piece, and the fixing piece and the shielding piece are arranged at an angle, and the angle range formed is greater than or equal to 45 degrees and less than or equal to 135 degrees.

In one of the embodiments, the electromagnetic shielding component further includes a bending section, the cross section of the bending section is U-shaped, one end of the bending section is connected to the fixing plate, and the other end of the bending section is connected to the shielding plate.

In one of the embodiments, the shielding sheet, the bending section and the fixing sheet are integrally formed.

In one of the embodiments, a connecting post is provided on the back of the housing;

The fixing piece is provided with a connecting hole matched with the connecting column, and the fixing piece is fixed on the connecting column.

In order to solve the above-mentioned technical problems, the present disclosure also provides a mobile terminal, which includes the above-mentioned housing assembly.

Brief description of the drawings

Fig. 1 is a schematic back view of a housing assembly provided by an embodiment of the present disclosure;

Figure 2 is an exploded view of a housing assembly provided by an embodiment of the present disclosure;

Fig. 3 is an enlarged view of a partial area A in Fig. 2;

Fig. 4 is a schematic diagram of an electromagnetic shield provided by an embodiment of the present disclosure;

Fig. 5 is a side view of an electromagnetic shield provided by an embodiment of the present disclosure.

The reference signs in the specification are as follows:

1. Housing; 11. Display area; 12. First installation slot; 121. First side wall; 13. Speaker area; 14. Non-display area; 15. Receiving slot; 16. Connecting column;

2. Sound cavity components; 21. Sound cavity shell;

3. Electromagnetic shielding parts; 31. Shielding sheet; 32. Fixing sheet; 321. Connecting hole; 33. Bending section.

Preferred embodiment of the present disclosure

In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiment of the present disclosure is shown in the accompanying drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present disclosure. The terms used in the specification of the present disclosure herein are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the figures shown in the drawings. The method or positional relationship is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure .

The embodiment of the present disclosure provides a housing assembly applied to a mobile terminal. Specifically, as shown in FIG. 1, the housing assembly includes a housing 1, a sound cavity assembly 2 and an electromagnetic shielding member 3.

Wherein, the front of the housing 1 is provided with a display area 11, the back of the housing 1 is provided with a first installation groove 12, and the first installation groove 12 is provided with a loudspeaker area 13. In order to facilitate viewing of the main structure of the housing assembly, the viewing angle of the housing assembly in FIG. 1 is a back view, and the display area 11 indicated in FIG. 1 is actually located on the front of the housing assembly in FIG. 1.

As shown in FIG. 2, the sound cavity assembly 2 includes a sound cavity housing 21 and a speaker (not shown in the figure) arranged in the sound cavity housing 21. The sound cavity housing 21 is arranged in the inner shell of the first mounting groove 12, The speaker is facing the speaker area 13.

As shown in FIG. 4 and FIG. 5, the electromagnetic shielding member 3 includes a shielding sheet 31 disposed between the speaker area 13 and the display area 11 for shielding electromagnetic interference from the speaker area 13 to the display area 11.

In the mobile terminal, the speaker receives the audio electrical signal, and through electromagnetic induction, the audio electrical signal is converted into the vibration of the diaphragm in the speaker, thereby realizing sound. Due to the electromagnetic induction of the speaker, it is easy for the speaker to release an electromagnetic field, thereby causing interference to the components in the 11 domain of the display area. Taking the aforementioned reader as an example for detailed description, the handwriting function of the reader with handwriting function is realized based on the principle of electromagnetic induction. Specifically, on the back of the display screen (not shown in the figure), an electromagnetic induction module with the same or similar size as the display screen, such as an electromagnetic film or an electromagnetic board, is arranged on the back of the display screen. When the pen is handwritten (not shown in the figure), electromagnetic induction is formed between the electromagnetic film, and the movement track of the stylus can be sensed through the electromagnetic film. The content written by the stylus on the display, the electromagnetic film obtains the coordinate data of the handwriting through electromagnetic induction, and the coordinate data is transmitted to the main chip. The main chip (not shown in the figure) outputs the written image after data processing, and reads Display on the monitor. In the aforementioned readers, the electromagnetic field generated by the speaker is likely to interfere with the electromagnetic film, causing the electromagnetic film to produce erroneous moving track coordinate data. In this embodiment, a shielding sheet 31 is provided between the speaker area 13 and the display area 11 to shield the electromagnetic field emitted from the speaker area 13, that is, to shield the electromagnetic field emitted from the speaker, and prevent the electromagnetic field emitted from the speaker from affecting The electromagnetic film produces electromagnetic induction, which ultimately prevents the speaker from interfering with the movement track coordinate data of the stylus.

In one embodiment, as shown in FIGS. 1 and 3, the front surface of the housing 1 is further provided with a non-display area 14, the first mounting groove 12 is facing the non-display area 14, and the shielding sheet 31 is disposed in the first mounting groove 12.的first side wall 121. The position in the housing 1 corresponding to the display area 11 is usually used for accommodating the display screen. In contrast, the non-display area 14 has a thicker space, so that the first mounting groove 12 has enough space to install the sound cavity assembly 2. The shielding sheet 31 is disposed on the first side wall 121 of the first mounting groove 12, and the shielding sheet 31 is located between the display area 11 and the speaker area 13, that is, the first side wall 121 corresponding to the aforementioned shielding sheet 31 is the first The side wall of the installation groove 12 between the display area 11 and the speaker area 13. When the sound cavity assembly 2 is installed in the first installation groove 12, the shielding sheet 31 is arranged on the first side wall 121 of the first installation groove 12. The shielding sheet 31 separates the display area 11 and the speaker area 13, so that the two areas form an electromagnetic The partition prevents the electromagnetic field emitted by the speaker in the speaker area 13 from generating electromagnetic induction on the electromagnetic film in the display area 11.

In this embodiment, one non-display area 14 may be included. For example, one side of the front of the housing 1 is the display area 11 and the other side is the non-display area 14, or it may include two non-display areas 14, such as the front of the housing 1. The middle part of is the display area 11, and the two ends of the front of the housing 1 are the non-display areas 14.

In one embodiment, a second installation groove (not shown in the figure) is provided on the front of the housing 1 at a position corresponding to the display area 11, and the second installation groove is used for accommodating the display screen and the electromagnetic film. The second mounting groove is recessed from the front of the housing 1 to the back of the housing 1, the first mounting groove 12 is recessed from the back of the housing 1 to the front of the housing 1, and the second mounting groove and the first mounting groove 12 are mutually recessed. staggered. When the second installation groove and the first installation groove 12 intersect each other, the shielding sheet 31 is arranged on the first side wall 121 of the first installation groove 12, so that the shielding sheet 31 is just blocked between the electromagnetic membrane and the speaker. The shielding sheet 31 has a better electromagnetic shielding effect.

In one embodiment, as shown in FIG. 3, the first side wall 121 is provided with a receiving groove 15, and the shielding sheet 31 is disposed in the receiving groove 15. After the accommodating groove 15 is provided, the side wall of the first installation groove 12 has a space for accommodating the shielding sheet 31, which prevents the shielding sheet 31 from occupying the space of the first installation groove 12, and thus avoids the addition of the electromagnetic shielding member 3 As a result, the structure of the sound cavity assembly 2 needs to be improved to vacate the space for accommodating the shielding sheet 31, so that the modification of the housing assembly is minimized, and the adverse effects of the electromagnetic shielding member 3 are reduced.

Specifically, the accommodating groove 15 faces the speaker area 13, the accommodating groove 15 extends from the back of the housing 1 to the bottom of the first mounting groove 12, and the outer contour of the accommodating groove 15 is greater than or equal to the outer contour of the shielding sheet 31.

In an embodiment, as shown in FIGS. 4 and 5, the electromagnetic shielding member 3 further includes a fixing piece 32, one end of the fixing piece 32 is connected to the shielding piece 31, and the other end of the fixing piece 32 is fixedly connected to the back of the housing 1. . In this embodiment, the fixing piece 32 is fixedly connected to the housing 1 so that the shielding piece 31 can be fixed in the first mounting groove 12 to prevent the shielding piece 31 from shifting.

In one embodiment, as shown in FIG. 5, one side edge of the fixing piece 32 is connected to one side edge of the shielding piece 31, and the fixing piece 32 and the shielding piece 31 are arranged at an angle, and the angle range formed is greater than or equal to 45 degrees. And the angle is less than or equal to 135 degrees. The angle formed by the fixing piece 32 and the shielding piece 31 depends on the situation of the back surface of the housing 1 and the first installation groove 12. Specifically, the angle formed by the fixing piece 32 and the shielding piece 31 is defined as the first angle, and the angle formed by the plane connecting the fixing piece 32 on the back of the housing 1 and the first side wall 121 is defined as the second angle. The first angle is equal to the second angle, or the first angle is slightly larger than the second angle, or the second angle is slightly larger than the first angle.

In an embodiment, as shown in FIGS. 4 and 5, the electromagnetic shielding member 3 further includes a bending section 33, and the middle of the bending section 33 is bent so that the bending section 33 is U-shaped as a whole, that is, the bending section 33 The cross section is U-shaped, one end of the bending section 33 is connected to the fixing piece 32, and the other end of the bending section 33 is connected to the shielding piece 31. When the fixing piece 32 and the shielding piece 31 are formed by bending, it is easy to cause rounded corners between the fixing piece 32 and the shielding piece 31. The fixed piece 32 and the shielding piece 31 transition in an arc shape. The sharp corner of the upper part of a side wall 121 causes installation interference. In this embodiment, the fixed piece 32 and the shielding piece 31 use the bent section 33 as a transition structure, and the U-shaped bent section 33 can avoid the sharp corners on the first side wall 121 to facilitate the installation of the electromagnetic shield 3.

In one embodiment, as shown in FIG. 4, the fixing piece 32, the shielding piece 31 and the bending section 33 are integrally formed, and the forming method includes sheet metal forming or casting forming. Of course, the fixing piece 32, the shielding piece 31 and the bending section 33 can also be connected into one body by means of clamping or welding.

In an embodiment, the electromagnetic shielding member 3 is a metal sheet or an electromagnetic shielding diaphragm.

In one embodiment, the fixing piece 32, the bending section 33 and the shielding piece 31 are of the same material as a sheet structure. In this way, the shielding area of the electromagnetic shielding member 3 is increased, and the shielding effect of the electromagnetic field emitted by the speaker is increased.

In one embodiment, the shielding sheet 31 is a flexible membrane with electromagnetic shielding function, and the flexible membrane is attached to the first side wall 121.

In some embodiments, the flexible membrane can be extended to the bottom of the first installation slot 12, of course, the flexible membrane can also be extended to the back of the housing 1, thereby increasing the area of electromagnetic shielding and increasing the electromagnetic shielding effect.

In an embodiment, as shown in FIGS. 3 and 4, a connecting post 16 is provided on the back of the housing 1. The fixing piece 32 is provided with a connecting hole 321 that is matched to the connecting post 16, and the fixing piece 32 is clamped to the connecting post 16 through the connecting hole 321, so that the fixing piece 32 is fixed on the connecting post 16 so that the shielding piece 31 It is fixedly connected with the connecting post 16 on the back of the housing 1.

Specifically, one or more connecting pillars 16 may be provided in this embodiment. When a plurality of connecting pillars 16 are provided, the connecting pillars 16 are arranged along a position close to the first side wall 121. When a plurality of connecting posts 16 are provided, the fixing piece 32 has a better fixing effect.

The embodiment of the present disclosure also provides a mobile terminal, including the above-mentioned housing assembly. On the front side of the housing 1, a display screen is arranged in the display area 11, and an electromagnetic film is arranged on the back of the display screen. The stylus generates electromagnetic induction to obtain the movement trajectory of the stylus. In this embodiment, a shielding sheet 31 is provided between the display area 11 and the speaker area 13, so as to cut off the electromagnetic interference of the speaker in the speaker area 13 to the electromagnetic film and prevent the speaker from interfering with the movement track coordinate data of the stylus.

In one embodiment, the mobile terminal is an ink screen reader with handwriting function.

In one embodiment, as shown in FIG. 1, the housing assembly includes a front housing and a rear cover (not shown in the figure), and the back cover is buckled on the back of the front housing. The aforementioned housing 1 is a front housing, as shown in FIG. 1 It is a schematic diagram of the back of the modified housing assembly after removal.

In one embodiment, the front case includes a middle frame and a front panel. The front surface of the aforementioned casing 1 is the front surface of the front panel, and the back surface of the aforementioned casing 1 is the back surface of the middle frame.

In other embodiments, the mobile terminal may also be any electronic device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a wearable device, and the like. Examples of mobile terminals include, but are not limited to satellite or cellular phones. A personal communication system (PCS) terminal that can combine cellular phones with data processing, fax, and data communication capabilities. May include radio phones, pagers, Internet/Intranet access, Web browsers, note pads, calendars, PDAs with global positioning system (GPS) receivers, conventional laptop receivers, palm-size receivers, and radio phone transceivers At least one of the other electronic devices of the device.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered as the range described in this specification.

The above examples only express a few implementations of the present disclosure, and the descriptions are more specific and detailed, but they should not be interpreted as a limitation on the scope of the disclosed patents. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure should be subject to the appended claims.

Claims

A housing assembly, characterized in that the housing assembly includes a housing, a sound cavity assembly and an electromagnetic shield;

A display area is provided on the front of the housing, a first installation groove is provided on the back of the housing, and a speaker area is provided in the first installation groove;

The sound cavity assembly includes a sound cavity housing and a speaker arranged in the sound cavity housing, the sound cavity housing is arranged in the first installation groove, and the speaker faces the loudspeaker area;

The electromagnetic shielding member includes a shielding sheet, which is disposed between the speaker area and the display area, and is used for shielding electromagnetic interference from the speaker area to the display area.
The housing assembly of claim 1, wherein the front of the housing is further provided with a non-display area, the first mounting groove is directly opposite to the non-display area, and the shielding sheet is disposed on the On the first side wall of the first mounting groove.
The housing assembly according to claim 2, wherein the first side wall is provided with an accommodation groove for accommodating the shielding sheet, and the shielding sheet is disposed in the accommodation groove.
The housing assembly according to claim 2 or 3, wherein a second mounting groove is provided at a position corresponding to the display area on the front of the housing, and the second mounting groove extends from the front of the housing. Recessed to the back of the shell;

The first mounting groove is recessed from the back of the housing to the front of the housing.
The housing assembly of claim 2, wherein the electromagnetic shielding member further comprises a fixing piece, one end of the fixing piece is connected to the shielding piece, and the other end of the fixing piece is connected to the housing The back of the fixed connection.
The housing assembly according to claim 4, wherein one side edge of the fixing piece is connected to one side edge of the shielding piece, and the fixing piece and the shielding piece are arranged at an angle. The range is greater than or equal to 45 degrees and less than or equal to 135 degrees.
The housing assembly according to claim 4, wherein the electromagnetic shielding member further comprises a bending section, the cross section of the bending section is U-shaped, and one end of the bending section is connected to the fixing piece Connected, the other end of the bending section is connected with the shielding sheet.
8. The housing assembly according to claim 7, wherein the shielding sheet, the bending section and the fixing sheet are integrally formed.
The housing assembly according to any one of claims 5 to 8, wherein a connecting post is provided on the back of the housing;

The fixing piece is provided with a connecting hole matched to the connecting column, and the fixing piece is fixed on the connecting column.
A mobile terminal, characterized in that the mobile terminal comprises the housing assembly of any one of claims 1-9.