CN114071316A

CN114071316A - Terminal and manufacturing method thereof

Info

Publication number: CN114071316A
Application number: CN202010761613.2A
Authority: CN
Inventors: 王伯源
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2022-02-18

Abstract

The disclosure relates to a terminal and a terminal manufacturing method, comprising: a piezoelectric body; the middle frame is provided with a first area and a second area, and the first area is positioned in the middle frame and used for supporting the piezoelectric body; the second area is other than the first area; the first region is locally connected with the second region; the drive assembly is connected with the piezoelectric body and used for driving the piezoelectric body to vibrate and driving the first area to vibrate and sound through changing the voltage acting on the piezoelectric body. The piezoelectric body is arranged on the middle frame, and when the piezoelectric body needs to be detached due to maintenance, replacement and the like, the linkage loss can be reduced, and the maintainability of the terminal is improved.

Description

Terminal and manufacturing method thereof

Technical Field

The disclosure relates to the field of machinery, and in particular, to a terminal and a method for manufacturing the terminal.

Background

The voice call is the most basic function of a terminal such as a mobile phone, and a receiver is one of basic components for realizing the function, and converts an audio electric signal into a sound signal to realize audio playback. Generally, earpiece solution designs require an aperture through which sound is directed. With the progress of industry technology and the increase of user requirements, more and more functions are integrated in the terminal, and the internal space is in tension day by day; in addition, the shapes of terminals such as mobile phones are developing towards full screens, and the screen occupation ratio is higher and higher, so that the implementation mode of innovative functions becomes a trend.

The current improved earphone scheme implementation mode comprises a micro-slit hole opening and an audio exciter driven screen sounding technology and the like. Among them, the audio exciter drives the screen sounding technology, as shown in fig. 1. The audio exciter 13 is fixed on the screen 11 and located between the screen 11 and the supporting body 13, and converts electric energy into mechanical energy through the electromagnetic induction principle of the magnet and the coil to drive the screen 11 to vibrate. The principle is similar to that of a conventional moving coil speaker except that the vibration unit is replaced with a screen 11. In the audio exciter driven screen sounding technology, the audio exciter 13 is fixed on the screen 11, and if the exciter 13 is damaged and needs to be repaired or replaced, the exciter 13 needs to be detached from the screen 11, but the screen 11 is fragile, so that the screen 11 is easily damaged, and a larger loss is caused, and the maintainability is poor.

Disclosure of Invention

The present disclosure provides a terminal and a method of manufacturing the terminal.

According to a first aspect of the embodiments of the present disclosure, there is provided a terminal, including:

a piezoelectric body;

the middle frame is provided with a first area and a second area, and the first area is positioned in the middle frame and used for supporting the piezoelectric body; the second area is other than the first area; the first region is locally connected with the second region;

and the driving component is connected with the piezoelectric body and used for driving the piezoelectric body to vibrate and drive the first area to vibrate and sound by changing the voltage acted on the piezoelectric body.

In some embodiments, the locally connecting the first region and the second region comprises:

the first area and the second area are of a connected structure;

the edge of the first area is provided with hollows, the hollows are discontinuous, and partial connecting ribs are reserved to form the local connection. .

the first area and the second area are of split structures;

and after the first area and the second area are completely separated, welding the first area and the second area on the edge of the second area to form the local connection.

In some embodiments, the first region is located at an upper central position of the middle frame.

In some embodiments, the piezoelectric body is adhesively secured to the first region.

In some embodiments, the piezoelectric body comprises a piezoceramic module.

In some embodiments, the terminal further comprises:

and the display screen is arranged on the middle frame, and the piezoelectric body is positioned between the middle frame and the display screen.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for manufacturing a terminal, which is used for the terminal according to any one of the embodiments, including:

forming a middle frame comprising a first area and a second area, wherein the second area is other areas except the first area; the first region is locally connected with the second region;

fixing a piezoelectric body on the first region;

and the driving component is electrically connected with the piezoelectric body.

In some embodiments, forming a middle frame including a first region and a second region comprises:

hollowing out is formed in the first substrate, and the first substrate is discontinuously hollowed out, and part of connecting ribs are reserved; the area inside the hollow enclosure is the first area, and the area outside the hollow enclosure is the second area.

manufacturing a second substrate, wherein the second substrate comprises: an opening;

manufacturing a third substrate, wherein the area of the third substrate is smaller than that of the opening;

placing the third substrate within the opening with a gap between an outer edge of the third substrate and an edge of the opening of the second substrate;

and welding the second substrate and the third substrate arranged in the opening of the second substrate at one or more positions of the gap to obtain the hollow middle frame.

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

as can be seen from the above embodiments, in the present disclosure, the first region and the second region are locally connected, and the connection between the first region and the second region of the middle frame is weakened. When drive assembly drive piezoelectricity body vibrates, the vibration effect of first region along with the piezoelectricity is greater than the second region, and the center vibration sound production can mainly concentrate on first region, has improved the sound production directive property, has reduced the whole center vibration and has leaked the risk because of lacking the conversation that the directive property caused.

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

Drawings

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

Fig. 1 is one of partial structural diagrams of a terminal;

fig. 2 is a second partial schematic structure of a terminal;

FIG. 3 is one of the partial structural schematics shown in accordance with an exemplary embodiment;

FIG. 4 is a second schematic diagram illustrating a partial structure according to an exemplary embodiment;

fig. 5 is a flowchart illustrating a terminal fabricating method according to an exemplary embodiment.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings.

The embodiment of the present disclosure provides a terminal, which mainly includes:

a piezoelectric body 200;

a middle frame 100 having a first region 110 and a second region 120, the first region 110 being located in the middle frame 100 and supporting the piezoelectric body 200; the second region 120 is a region other than the first region; the first region 110 is locally connected to the second region 120;

and the driving component is connected with the piezoelectric body 200 and used for driving the piezoelectric body to vibrate and driving the first area 110 to vibrate and sound by changing the voltage applied to the piezoelectric body 200.

In the embodiment of the present disclosure, the piezoelectric body 200 is installed on the middle frame 100, and when the driving component drives the piezoelectric body 200 to vibrate, the piezoelectric body 200 drives the middle frame 100 to vibrate and sound, so as to implement a receiver function. The display screen does not need to be used for vibrating and sounding, and when the piezoelectric body 200 is maintained, detached or replaced and detached, the associated loss is reduced, and the maintainability of the terminal is improved.

As shown in fig. 2, the cantilever beam type piezoelectric body 22 causes the entire center frame 21 to vibrate nondirectionally, which tends to make the sound transmission direction unclear and lack directivity, and when a call is made with a terminal, the content of the call is easily heard by the surrounding people, and privacy protection is lacking. In the embodiment of the present disclosure, the middle frame 100 is divided into the first area 110 and the second area 120, and the first area 110 is locally connected to the second area 120, so that the connection between the first area 110 and the second area 120 of the middle frame 100 is weakened. When the driving assembly drives the piezoelectric body 200 located on the first area 110 to vibrate, the vibration amplitude of the first area 110 is greater than that of the second area 120, the vibration effect of the first area 110 along with the piezoelectric body 200 is greater than that of the second area 120, the vibration sounding of the middle frame 100 is mainly concentrated on the first area 110, the sounding directivity is improved, the call leakage risk caused by the lack of directivity of the vibration of the whole middle frame 100 is reduced, and the privacy of the call process is improved.

Furthermore, as shown in fig. 3, the piezoelectric body 200 is located on the first region 110, and the local connection reduces the connection area between the first region 110 and the second region 120, so that the first region 110 and the second region 120 are changed from a strong connection to a weak connection, and the mechanical vibration of the piezoelectric body 200 is more retained on the first region 110, so that the amplitude of the first region 110 can be increased, and the driving assembly can realize a larger amplitude of the first region 110 with a smaller power. Compared with the middle frame 21 in fig. 2, the driving assembly of the embodiment of the disclosure drives the second area 120 to vibrate through the vibration of the first area 110, so as to realize the vibration mode of the whole middle frame 100, thereby not only improving privacy protection, but also improving communication quality.

The piezoelectric body 200 includes a material capable of converting electrical energy into mechanical energy, such as: piezoelectric ceramics or piezoelectric crystals.

The driving assembly includes a driving circuit, and an electric field generated by the driving circuit can cause polarization of the piezoelectric body 200, so that mechanical stress such as deformation is generated in the piezoelectric body 200, thereby realizing vibration of the piezoelectric body 200. Generally, the larger the vibration intensity to be obtained, the more the piezoelectric body 200 needs to be sufficiently deformed, and the larger the volume of the piezoelectric body 200 is. Due to the local connection, the piezoelectric body 200 can drive the vibration of the first region 110 with a smaller vibration strength, and therefore, on the premise of also meeting the communication requirement, compared with the case that the cantilever beam type piezoelectric body 22 is used to drive the whole middle frame 21 to vibrate and sound in the structure shown in fig. 2, the piezoelectric body 200 in the embodiment of the disclosure can be made smaller in volume, and the occupation of the internal space of the terminal is reduced.

The position and area of the first region 110 can be adjusted according to performance requirements, maintenance requirements, and the like. For example, the first region 110 may be disposed at a middle position of the entire middle frame 100; alternatively, the first region 110 is located at an upper central position of the middle frame 100. So that the first region 110 where the sound is more concentrated is near the user's ear when talking.

The terminal of the embodiment of the present disclosure includes, but is not limited to, an electronic product such as a mobile phone, a tablet computer, a notebook computer, a television, or a desktop computer.

The terminal takes a mobile phone as an example, when a user uses the mobile phone to talk, the held part is closer to the second area 120 of the middle frame 100, because the vibration sounding part of the middle frame 100 is concentrated in the first area 110, and the vibration intensity of the second area 120 is smaller than that of the first area 110, the vibration sense of the edge of the whole body is effectively reduced, and the user experience is improved.

The shape of the first area 110 can also be adjusted as required, for example, fig. 3 illustrates a rectangular first area 110, and the shape of the first area 110 can also be designed as a circle, a triangle, a star, etc., as required.

In the embodiment of the present disclosure, the middle frame 100 may have a hollow frame structure. The middle frame 100 is used for providing a supporting function for electronic components or functional components such as a circuit board, a battery or a camera in the terminal to mount the electronic components and the functional components together.

In other alternative embodiments, locally connecting the first region 110 to the second region 120 includes:

the first region 110 and the second region 120 are connected;

the edge of the first region 110 is provided with a hollow 130, the hollow 130 is discontinuous, and a part of connecting ribs are reserved to form local connection. The conjoined structure can be manufactured in an integrated forming mode such as machining or compression molding, and the like, so that the manufacturing steps of the middle frame 100 are simplified; also, poor connection of the first region 110 and the second region 120 due to assembly is reduced.

Further, the length of the connecting rib (i.e., the hollow space 140) between two adjacent hollows 130 of the middle frame 100 is smaller than the length of the hollow 130.

As shown in fig. 3, the first region 110 and the second region 120 are connected by a hollow space 140. The total length of the openings 130 along the peripheral side of the first region 110 is greater than the total length of the opening spaces 140, so that only a weak connection is ensured between the first region 110 and the second region 120, vibration is concentrated in the first region 110, and the driving assembly can realize large amplitude vibration of the first region 110 with low power.

The number of the openings 130 can be adjusted as required, and usually the number of the openings 130 is at least two.

The number of the openings 130 is several, and a semi-closed area needs to be formed, and the first area 110 is a semi-closed area. The semi-enclosed area refers to: the sum of the circumferences of the different junctions of the first region 110 and the second region 120 is less than 50% of the total circumference of the first region 110. For example: the joint perimeter may account for 1% to 48%, or 5% to 30% of the entire perimeter of the first region 110. further, the joint perimeter may account for 3%, 8%, 10%, 15%, 20%, 30%, 40%, or 48% of the entire perimeter of the first region 110; alternatively, the sum of the angles occupied by the respective junctions of the first region 110 and the second region 120 is less than 180 °, for example: the sum of the angles occupied by the joints of the first region 110 and the second region 120 is 5-175 degrees, or 15-100 degrees; further, the angle occupied by the connection is 10 °, 15 °, 25 °, 30 °, 40 °, 50 °, 80 °, or 100 °.

Further, the number of the openings 130 is related to the shape of the first region 110, for example, if the first region 110 is circular, the openings 130 may be arc-shaped openings close to two semicircles; if the first region 110 is triangular, the possible openings 130 are three linear openings arranged along the triangular shape; if the first region 110 is a quadrilateral, the hollow 130 may be three hollows arranged along the quadrilateral shape, wherein two hollows are in a straight line shape, and the other hollow is in an L shape; if the first region 110 is a quadrilateral, the openings 130 may also be four linear openings arranged along the quadrilateral shape.

The middle frame 100 may be formed by forming the hollow 130 on the first substrate in a machining groove manner. Alternatively, the middle frame 100 having the hollow 130 is directly manufactured by using a mold. At this time, the first region 110 and the second region 120 are of a one-piece structure, and the material of the first region 110, the second region 120 and the hollow 130 and the space 140 is the same as the material of the first substrate constituting the middle frame 100.

Generally, the material of the middle frame 100 comprises a conductive metal or conductive alloy material in order to obtain better strength and fatigue resistance of the conductive metal or conductive alloy. The spacing 140 of the openings 130 comprises conductive elements of correspondingly conductive metals and conductive alloys.

the first region 110 and the second region 120 are of a split structure;

after the first region 110 is completely separated from the second region 120, it is welded to the edge of the second region 120 to form a partial connection.

The first region 110 and the second region 120 may also be two physically separable portions prior to welding to form the middle frame 100. The first region 110 and the second region 120 are connected by using a welding metal, and the portion of the periphery of the first region 110 except the portion connected with the second region 120 is hollowed out from the second region 120.

In other alternative embodiments, the piezoelectric body 200 is adhesively secured to the first region 110.

As shown in fig. 4, the adhesive may be fixed by bonding with an adhesive layer 300 formed by curing an adhesive, or may be fixed by bonding with a double-sided tape having an adhesive. Adhesives include, but are not limited to, acrylic polymer glues or epoxy glue.

The piezoelectric body 200 may be fixed to the first region 110 by screw connection, thermal fusion connection, or the like.

In other alternative embodiments, the piezoelectric body 200 comprises a piezoceramic module.

In addition to ceramics, other materials capable of exhibiting piezoelectric effects may be used for the piezoelectric body 200, such as: polyvinylidene fluoride, crystal, or the like is used.

In other optional embodiments, the terminal further includes:

and a display screen mounted on the middle frame 100, and the piezoelectric body 200 is positioned between the middle frame 100 and the display screen.

In the embodiment of the present disclosure, the piezoelectric body 200 drives the middle frame 100 to vibrate, and the vibration of the middle frame 100 may be transmitted through air and/or transmitted into the ear by contacting with the body, so as to achieve the function of the earphone. Therefore, the display screen does not need to be provided with holes, and the screen occupation ratio of the terminal is favorably improved.

In addition, the terminal may further include a rear case, the display screen and the rear case are respectively installed on two sides of the middle frame 100, the middle frame 100 and the rear case may form a housing of the terminal, and in practical applications, besides the middle frame 100 and the rear case, the housing of the terminal may also be formed by matching with other structures.

In a specific example, as shown in fig. 3 and 4, a central partial hollow 130 of the middle frame 100 is formed to form a relatively independent first region 110, the first region 110 is connected to the second region 120 at an interval 140 through the hollow 130, and the piezoceramic module is fixed in the first region 110. During operation, the piezoelectric ceramic module drives the first region 110 to vibrate and sound, so as to realize the function of a receiver. The openings 130 can break the strong connection between the first region 110 and the second region 120, but the openings 140 can remain weak connection, so that the vibration sound is concentrated in the first region 110. Therefore, on one hand, the small-power large amplitude can be realized, on the other hand, the vibration sound-emitting area is concentrated, the directivity is good, the privacy can be improved, the small-power large amplitude is realized, and the efficiency is high.

In addition, the piezoelectric ceramic module is fixed on the middle frame 100, and has no loss in maintenance and replacement, and good maintainability. The sizes of the openings 130, the opening spaces 140, and the first region 110 are adjusted according to performance requirements, maintenance requirements, and the like.

The embodiment of the disclosure also provides a manufacturing method, which is applied to the terminal in any one of the embodiments. As shown in fig. 5, the method mainly includes the following steps:

s101, forming a middle frame 100 comprising a first area 110 and a second area 1201, wherein the second area 110 is an area other than the first area 120; the first region 110 is locally connected to the second region 120;

s102, fixing the piezoelectric body 200 to the first region 110;

and S103, electrically connecting the driving assembly and the piezoelectric body 200.

In actual operation, the operation sequence between step S101 to step S103 may be changed, for example: the piezoelectric body 200 may be fixed on the middle frame 100, and then the hollow 130 may be formed on the middle frame 100.

Without limitation, the piezoelectric body 200 may be fixed to the first region 110 by means of adhesion.

In other alternative embodiments, forming a middle frame containing the first region 110 and the second region 120 includes:

the first substrate is provided with hollows 130, the hollows 130 are discontinuous, and part of connecting ribs (namely hollow intervals 140) are reserved; the area inside the hollow 130 is the first area 110, and the area outside the hollow 130 is the second area 120.

The first substrate is a raw material for manufacturing the middle frame 100. As shown in fig. 3, a first region 110 and a second region 120 of a connected structure are formed by opening a hollow 130 on a first substrate.

placing a third substrate in the opening with a gap between an outer edge of the third substrate and an edge of the opening of the second substrate;

and welding the second substrate and a third substrate arranged in the opening of the second substrate at one or more positions of the gap to obtain the middle frame 100 containing the hollow parts 130.

In practice, the second substrate and the third substrate are physically separable and independent two parts, and after soldering, the second substrate corresponds to the first region 110 of the middle frame 100, and the third substrate corresponds to the second region 120 of the middle frame 100.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.

The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.

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

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

Claims

1. A terminal, comprising:

a piezoelectric body;

2. The terminal of claim 1, wherein the first region being locally connected to the second region comprises:

the first area and the second area are of a connected structure;

the edge of the first area is provided with hollows, the hollows are discontinuous, and partial connecting ribs are reserved to form the local connection.

3. The terminal of claim 1, wherein the first region being locally connected to the second region comprises:

the first area and the second area are of split structures;

4. A terminal according to claim 1, wherein the first region is located at an upper central position of the middle frame.

5. A terminal as claimed in claim 1, wherein the piezoelectric body is adhesively secured to the first region.

6. A terminal according to claim 1, wherein the piezoelectric body comprises a piezoelectric ceramic module.

7. The terminal of claim 1, further comprising:

8. A method for manufacturing a terminal according to any one of claims 1 to 7, comprising:

fixing a piezoelectric body on the first region;

9. The method of claim 8, wherein forming the middle frame including the first region and the second region comprises:

10. The method of claim 8, wherein forming the middle frame including the first region and the second region comprises: