CN111212529A

CN111212529A - Mobile terminal shell, preparation method thereof and mobile terminal

Info

Publication number: CN111212529A
Application number: CN201811400505.1A
Authority: CN
Inventors: 张斌; 靳宏志
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2020-05-29
Anticipated expiration: 2038-11-22
Also published as: CN111212529B

Abstract

The disclosure relates to a shell of a mobile terminal, a preparation method of the shell and the mobile terminal. The preparation method comprises the following steps: manufacturing a first matching surface, a second matching surface, a third matching surface and a fourth matching surface of the first shell; cutting to form a plane glass plate; performing a hot bending operation on the flat glass sheet to form a second housing, the second housing comprising first and second opposing sidewalls, and third and fourth opposing sidewalls; after the first shell and the second shell are assembled, the first matching surface is parallel and opposite to the first side wall, the second matching surface is parallel and opposite to the second side wall, the third matching surface is parallel and opposite to the third side wall, and the fourth matching surface is parallel and opposite to the fourth side wall. The technical scheme can avoid edge touch, and is beneficial to falling impact and gap control.

Description

Mobile terminal shell, preparation method thereof and mobile terminal

Technical Field

The disclosure relates to the technical field of mechanical manufacturing, in particular to a shell of a mobile terminal, a manufacturing method of the shell and the mobile terminal.

Background

At present, a molding knife on a CNC (computer Numerical Control) Machine is generally adopted to process a middle frame part of the mobile terminal, and a glass battery cover is cut by the CNC (computer Numerical Control) Machine and then is hot-bent to be manufactured; however, after the middle frame and the glass battery cover are assembled, the uniformity and the parallel correspondence of the fit clearance between the middle frame and the glass battery cover are both problematic, the tolerance is difficult to control, and the glass is easy to deform, dislocate and crack due to the fact that the glass falls into edge touch.

Disclosure of Invention

The embodiment of the disclosure provides a shell of a mobile terminal, a preparation method of the shell and the mobile terminal. The technical scheme is as follows:

according to a first aspect of embodiments of the present disclosure, there is provided a method of manufacturing a case of a mobile terminal,

manufacturing a first matching surface, a second matching surface, a third matching surface and a fourth matching surface of a first shell, wherein the first matching surface and the second matching surface are opposite and mirror-symmetrical, the third matching surface and the fourth matching surface are opposite and mirror-symmetrical, a first included angle is formed between the first matching surface and the second matching surface, a second included angle is formed between the third matching surface and the fourth matching surface, and the angles of the first included angle and the second included angle are different;

cutting to form a plane glass plate;

performing a hot bending operation on the flat glass sheet to form a second enclosure comprising first and second opposing side walls, third and fourth opposing side walls;

after the first shell and the second shell are assembled, the first matching surface is parallel and opposite to the first side wall, the second matching surface is parallel and opposite to the second side wall, the third matching surface is parallel and opposite to the third side wall, and the fourth matching surface is parallel and opposite to the fourth side wall.

In one embodiment, the manufacturing of the first mating surface, the second mating surface, the third mating surface and the fourth mating surface of the first shell includes:

manufacturing a first matching surface and a second matching surface of the first shell by adopting a first forming cutter;

and manufacturing a third matching surface and a fourth matching surface of the first shell by adopting a second molding cutter.

In one embodiment, the CNC fabrication of the flat glass sheet with the computer numerical control machine comprises:

cutting a first side wall and a second side wall of a plane glass plate into inclined planes which incline to a middle shaft of the plane glass plate by a preset angle;

the hot bending operation of the planar glass sheet to form a second housing includes:

and carrying out hot bending operation on the plane glass plate to form a second shell, and manufacturing the first side wall and the second side wall into vertical surfaces.

According to a second aspect of the embodiments of the present disclosure, there is provided a housing of a mobile terminal, made by the above preparation method, including:

the first shell comprises a four-side frame body, wherein the four-side frame body comprises a first matching surface and a second matching surface which are opposite and mirror-symmetrical, and a third matching surface and a fourth matching surface which are opposite and mirror-symmetrical; a first included angle is formed between the first matching surface and the second matching surface, a second included angle is formed between the third matching surface and the fourth matching surface, and the first included angle is different from the second included angle;

the second shell comprises a cover body, the cover body comprises a first side wall and a second side wall which are opposite, and a third side wall and a fourth side wall which are opposite;

the first matching surface is parallel and opposite to the first side wall, the second matching surface is parallel and opposite to the second side wall, the third matching surface is parallel and opposite to the third side wall, and the fourth matching surface is parallel and opposite to the fourth side wall.

In one embodiment, the first side wall and the second side wall are vertical surfaces, and the first mating surface and the second mating surface are also vertical surfaces.

In one embodiment, the range of distances between the first mating surface and the first sidewall includes: 0.05mm to 0.075 mm;

the distance range between the second mating surface and the second side wall comprises: 0.05mm to 0.075 mm.

In one embodiment, the range of distances between the third mating surface and the third sidewall includes: 0.05mm to 0.07 mm;

the range of distances between the fourth mating surface and the fourth side wall includes: 0.05mm to 0.07 mm.

In one embodiment, the second housing includes a battery back cover or a screen protection cover.

According to a third aspect of the embodiments of the present disclosure, there is provided a mobile terminal including the above-mentioned housing.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in this embodiment, a first mating surface, a second mating surface, a third mating surface and a fourth mating surface of a first housing may be manufactured, where the first mating surface and the second mating surface are opposite and mirror-symmetric, the third mating surface and the fourth mating surface are opposite and mirror-symmetric, a first included angle is formed between the first mating surface and the second mating surface, a second included angle is formed between the third mating surface and the fourth mating surface, and the first included angle and the second included angle are different in size; after the first shell and the second shell are assembled, the first matching surface is parallel and opposite to the first side wall, the second matching surface is parallel and opposite to the second side wall, the third matching surface is parallel and opposite to the third side wall, and the fourth matching surface is parallel and opposite to the fourth side wall; the edges can not touch, and the falling impact and the gap control are facilitated.

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 a flowchart illustrating a method of manufacturing a case of a mobile terminal according to an exemplary embodiment.

Fig. 2 is a schematic structural diagram illustrating a housing of a mobile terminal according to an exemplary embodiment.

Fig. 3 is a block diagram illustrating a terminal according to an example 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 apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a flowchart illustrating a method for preparing a housing of a mobile terminal according to an exemplary embodiment, where the method for preparing a housing of a mobile terminal is used in a preparation device such as a CNC and includes the following steps 101 and 103:

in step 101, a first mating surface, a second mating surface, a third mating surface and a fourth mating surface of a first housing are manufactured.

Fig. 2 is a schematic structural diagram illustrating a housing of a mobile terminal according to an exemplary embodiment, where as shown in fig. 2, the housing 2 includes a first housing 21 and a second housing 22, and a preparation device such as a CNC or the like can manufacture a first mating surface 211, a second mating surface 212, a third mating surface 213 and a fourth mating surface 214 of the first housing 21. The first matching surface 211 and the second matching surface 212 are opposite and mirror-symmetrical, the third matching surface 213 and the fourth matching surface 214 are opposite and mirror-symmetrical, a first included angle is formed between the first matching surface 211 and the second matching surface 212, a second included angle is formed between the third matching surface 213 and the fourth matching surface 214, the first included angle and the second included angle are different, and because the first matching surface 211 and the second matching surface 212 are opposite and mirror-symmetrical, the inclination degree of the first matching surface 211 and the second matching surface 212 is the same but the inclination direction is axisymmetric; since the third mating surface 213 and the fourth mating surface 214 are opposite and mirror-symmetrical, the third mating surface 213 and the fourth mating surface 214 are inclined to the same degree but are axially symmetrical in the inclined direction; if the first included angle is different from the second included angle, the first engagement surface 211 and the second engagement surface 212 are inclined to a different degree than the third engagement surface 213 and the fourth engagement surface 214; therefore, the first mating surface 211, the second mating surface 212, the third mating surface 213 and the fourth mating surface 214 can be made by four-axis forming cutter or six-axis forming cutter.

In step 102, a flat glass sheet is cut.

Here, the manufacturing apparatus may employ a cutter knife to cut a large glass plate into pieces of flat glass plates of fixed sizes.

In step 103, the flat glass sheet is subjected to a hot bending operation to form a second enclosure comprising opposing first and second sidewalls, and opposing third and fourth sidewalls.

Here, the manufacturing apparatus may perform a hot bending operation on the flat glass to form the second casing 22 shown in fig. 2, the second casing 22 including opposite first and

second sidewalls

221 and 222, and opposite third and

fourth sidewalls

223 and 224. After the first housing 21 and the second housing 22 are assembled, the first mating surface 211 is parallel and opposite to the first sidewall 221, the second mating surface 212 is parallel and opposite to the second sidewall 222, the third mating surface 213 is parallel and opposite to the third sidewall 223, and the fourth mating surface 214 is parallel and opposite to the fourth sidewall 224.

Here, in the prior art, one forming cutter is adopted to manufacture four matching surfaces of the first shell, so that the four matching surfaces have the same inclination degree; when the second shell is formed by hot bending, the degree of curvature of the curved surface between the first side wall and the second side wall is different from the degree of curvature of the curved surface between the third side wall and the fourth side wall, so that the degree of inclination of the first side wall and the second side wall is different from the degree of inclination of the third side wall and the fourth side wall, and thus when the first side wall and the first matching surface are parallel to each other, the second side wall and the second matching surface are parallel to each other, but the third side wall and the third matching surface are not parallel to each other, and the fourth side wall and the fourth matching surface are not parallel to each other, but the edge of one matching surface is opposite to the surface of one side wall or the matching surface is opposite to the edge of one side wall. Therefore, in this embodiment, a first included angle is formed between the first matching surface and the second matching surface which are opposite and mirror-symmetrical in the manufactured first shell, and a second included angle is formed between the third matching surface and the fourth matching surface which are opposite and mirror-symmetrical, the two included angles are different, that is, the inclination degree of the first matching surface and the second matching surface is the same as degree a, the inclination degree of the third matching surface and the fourth matching surface is the same as degree B, but degree a and degree B are different, so that the first matching surface and the first side wall are parallel and opposite, the second matching surface and the second side wall are parallel and opposite, and meanwhile, the third matching surface and the third side wall are parallel and opposite, and the fourth matching surface and the fourth side wall are parallel and opposite. Because the contact surfaces of the first shell and the second shell are parallel, the contact surfaces can not be touched by edges, and the falling impact and the gap control are facilitated.

In this embodiment, a first mating surface, a second mating surface, a third mating surface and a fourth mating surface of a first housing may be manufactured, where the first mating surface and the second mating surface are opposite and mirror-symmetric, the third mating surface and the fourth mating surface are opposite and mirror-symmetric, a first included angle is formed between the first mating surface and the second mating surface, a second included angle is formed between the third mating surface and the fourth mating surface, and the first included angle and the second included angle are different in size; after the first shell and the second shell are assembled, the first matching surface is parallel and opposite to the first side wall, the second matching surface is parallel and opposite to the second side wall, the third matching surface is parallel and opposite to the third side wall, and the fourth matching surface is parallel and opposite to the fourth side wall; the edges can not touch, and the falling impact and the gap control are facilitated.

In a possible implementation manner, in step 101, the method for preparing the housing of the mobile terminal may be implemented as the following steps a1 and a 2.

In step a1, a first forming tool is used to form a first mating surface and a second mating surface of the first housing.

In step a2, a second forming tool is used to form a third mating surface and a fourth mating surface of the first housing.

Here, in order to reduce the cost of manufacture, the preparation facilities can adopt first shaping sword to make first fitting surface and the second fitting surface of first casing, so, guarantee that the inclination degree of first fitting surface and second fitting surface is the same for degree a, adopt the second third fitting surface and the fourth fitting surface of shaping sword preparation first casing, guarantee that the inclination degree of first fitting surface and second fitting surface is the same for degree B, but first shaping sword and second are different shaping sword, guarantee that inclination degree a and inclination degree B are different.

It should be noted that the inclination degree a and the inclination degree B may be set according to the inclination degree of the side wall of the second housing, and the preparation apparatus may prepare the second housing in advance, determine the inclination degree a according to the inclination degree of the first side wall and the second side wall of the second housing formed by hot bending, so that the first mating face is parallel to and opposite to the first side wall, and the second mating face is parallel to and opposite to the second side wall; and determining the inclination degree B according to the inclination degrees of the third side wall and the fourth side wall, so that the third matching surface is opposite to the third side wall in parallel, and the fourth matching surface is opposite to the fourth side wall in parallel. Different degrees of thermal bowing can determine different degrees of tilt a and different degrees of tilt B.

In the embodiment, the first matching surface and the second matching surface of the first shell can be manufactured by the first forming cutter, and the third matching surface and the fourth matching surface of the first shell can be manufactured by the second forming cutter, so that the manufacturing cost is low.

In a possible implementation manner, step 102 in the preparation method of the housing of the mobile terminal may be implemented as the following step B1, and step 103 may be implemented as the following step B2.

In step B1, the first and second side walls of the flat glass sheet are made to be inclined planes inclined at a predetermined angle toward the middle axis of the flat glass sheet.

In step B2, the flat glass sheet is subjected to a hot bending operation to form a second housing, the first and second side walls being made vertical.

Here, an experimental glass plate having four vertical side walls and the same size as the plane glass plate may be manufactured in advance, and then the experimental glass plate may be subjected to hot bending using preset hot bending parameters to obtain an experimental glass plate having four inclined side walls, and the inclination angle C of the side wall on the experimental glass plate having the same position as the first side wall and the second side wall of the plane glass plate may be measured. Therefore, when the preparation device is used for manufacturing the second shell, the first side wall and the second side wall of the plane glass plate can be directly inclined planes which incline to the middle axial plane of the plane glass plate by the preset angle C, so that when the plane glass plate is subjected to hot bending forming by adopting preset hot bending forming parameters, the first side wall and the second side wall can be manufactured into vertical planes.

This embodiment can adopt CNC preparation plane glass board, make first lateral wall with the second lateral wall be to the inclined plane of plane glass board intermediate axis face slope default angle, it is right the plane glass board carries out the hot-bending operation and forms the second casing, makes first lateral wall and second lateral wall are vertical face, make things convenient for the measurement control clearance.

The embodiment also provides a housing of a mobile terminal, which is manufactured by the above manufacturing method, as shown in fig. 2, the housing 2 includes: the first housing 21 comprises a four-sided frame body, the four-sided frame body comprises a first mating surface 211 and a second mating surface 212 which are opposite and mirror-symmetrical, and a third mating surface 213 and a fourth mating surface 214 which are opposite and mirror-symmetrical; a first included angle is formed between the first mating surface 211 and the second mating surface 212, a second included angle is formed between the third mating surface 213 and the fourth mating surface 214, and the first included angle is different from the second included angle; the second housing 22 includes a cover body including first and second opposing

sidewalls

221 and 222, and third and fourth opposing

sidewalls

223 and 224.

The first engagement surface 211 is parallel and opposite to the first sidewall 221, the second engagement surface 212 is parallel and opposite to the second sidewall 222, the third engagement surface 213 is parallel and opposite to the third sidewall 223, and the fourth engagement surface 214 is parallel and opposite to the fourth sidewall 224.

In the embodiment, the contact surfaces of the first shell and the second shell are parallel and opposite, so that edge touch is avoided, and falling impact and gap control are facilitated.

In a possible embodiment, the first side wall and the second side wall are vertical surfaces, and the first mating surface and the second mating surface are also vertical surfaces.

This embodiment can set up first lateral wall and second lateral wall as vertical face, will first fitting surface with the second fitting surface also sets up to vertical face, makes things convenient for measurement control clearance.

In one possible embodiment, the range of distances between the first mating surface and the first sidewall includes: 0.05mm to 0.075 mm;

In one possible embodiment, the range of distances between the third mating surface and the third sidewall includes: 0.05mm to 0.07 mm;

The gap between the parallel opposite matching surface and the side wall is not easy to be too large, so that substances such as dust and the like are prevented from entering the terminal through the gap, and the gap is not easy to be too small, so that the difficulty in assembling the first shell and the second shell is avoided.

In one possible embodiment, the second housing includes a battery back cover or a screen protection cover.

Here, when the second housing is a rear cover of the battery, the first housing may also include a middle frame and a front case; when the second shell is a screen protective cover, the first shell comprises a middle frame and a rear cover.

Fig. 3 is a block diagram illustrating a mobile terminal 300, which may be, for example, a smart phone, a game console, a computer, a tablet device, a personal digital assistant, etc., according to an example embodiment.

The device 300 may be configured to process outside of the housing described above, and may further include one or more of the following components: processing component 301, memory 302, power component 303, multimedia component 304, audio component 305, input/output (I/O) interface 306, sensor component 307, and communication component 308.

The processing component 301 generally controls the overall operation of the device 300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 301 may include one or more processors 320 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 301 may include one or more modules that facilitate interaction between the processing component 301 and other components. For example, the processing component 301 may include a multimedia module to facilitate interaction between the multimedia component 304 and the processing component 301.

The memory 302 is configured to store various types of data to support operations at the apparatus 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 302 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 303 provides power to the various components of the device 300. The power components 303 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 300.

The multimedia component 304 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 304 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 300 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 305 is configured to output and/or input audio signals. For example, the audio component 305 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 302 or transmitted via the communication component 308. In some embodiments, the audio assembly 305 also includes a speaker for outputting audio signals.

The I/O interface 306 provides an interface between the processing component 301 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 307 includes one or more sensors for providing various aspects of status assessment for the device 300. For example, the sensor component 307 may detect an open/closed state of the device 300, the relative positioning of components, such as a display and keypad of the device 300, the sensor component 307 may also detect a change in the position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration/deceleration of the device 300, and a change in the temperature of the device 300. The sensor component 307 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 307 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 307 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 308 is configured to facilitate communication between the apparatus 300 and other devices in a wired or wireless manner. The device 300 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 308 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 308 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 302 comprising instructions, executable by the processor 320 of the apparatus 300 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

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 application 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 method for preparing a shell of a mobile terminal is characterized in that,

cutting to form a plane glass plate;

2. The method of claim 1, wherein fabricating the first mating surface, the second mating surface, the third mating surface, and the fourth mating surface of the first housing comprises:

3. The method of claim 1, wherein the CNC fabrication of the flat glass sheet with the computer numerically controlled machine tool comprises:

4. A case for a mobile terminal, manufactured by the method of any one of claims 1 to 3, comprising:

5. The housing of claim 4, wherein the first and second side walls are vertical surfaces and the first and second mating surfaces are also vertical surfaces.

6. The housing of claim 4, wherein a range of distances between the first mating surface and the first sidewall comprises: 0.05mm to 0.075 mm;

7. The housing of claim 4, wherein a range of distances between the third mating surface and the third sidewall comprises: 0.05mm to 0.07 mm;

8. The case of claim 4, wherein the second case comprises a battery back cover or a screen protection cover.

9. A mobile terminal characterized by comprising a housing according to any of claims 4 to 8.