CN106710922A - Key structure and electronic device - Google Patents
Key structure and electronic device Download PDFInfo
- Publication number
- CN106710922A CN106710922A CN201611185053.0A CN201611185053A CN106710922A CN 106710922 A CN106710922 A CN 106710922A CN 201611185053 A CN201611185053 A CN 201611185053A CN 106710922 A CN106710922 A CN 106710922A
- Authority
- CN
- China
- Prior art keywords
- key
- groove
- press
- key body
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
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- Telephone Set Structure (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The present disclosure provides a key structure. The key structure comprises a body, a key body inserted into the body, and a connection component arranged in the body and the key body; and the connection component includes a first end arranged in the body and a second end arranged in the key body, wherein the second end is in interference fit with the key body. The present invention also provides an electronic device provided with the above key structure. According to the key structure and the electronic device provided by the technical schemes of the invention, the key body has little possibility of swinging, generates no abnormal noises, and has little possibility of being abraded, and therefore, the key structure has the advantages of long service life, low cost, low requirements for processing size accuracy and high adaptability.
Description
Technical field
This disclosure relates to the communications field, more particularly to a kind of press-key structure and electronic equipment.
Background technology
Button can select the catch of metal the key body that limit and fix button during installation, typically.Related skill
For example externally to built-in press-key structure, complex structure, it is necessary to the key body movement travel of reserved button, key body difficult processing in art
Spend big, high cost high to requirement on machining accuracy.Button after assembling is rocked because there is stroke gap, influences experience.
The content of the invention
In view of this, the disclosure provides a kind of press-key structure and electronic equipment, for realizing being difficult to rock after installing, uses
Long lifespan, the easy purpose of production economy.
Specifically, the disclosure is achieved by the following technical solution：
A kind of press-key structure, including body, be plugged on the intrinsic key body and be arranged in the body and key body
Connector, the connector include be arranged on the intrinsic first end and the second end being arranged in the key body, it is described
Second end and key body interference fit.
Connector two ends connect body and key body respectively, by the free travel of the second end limit key body of interference fit,
Reduce rocking for part cooperation.
Further, the body is provided with the first groove for housing the first end, and the key body is provided with collecting post
State second groove at the second end.Connector is housed by groove, the steadiness of connection is ensure that, and convenient for production, manufacture
Simply.
Further, when the key body is in the first position not by external force, the lower surface of second groove is higher than
The lower surface of first groove；When key body is in the second place of stress trigger action, the lower surface of second groove
Less than the lower surface or concordant with the lower surface of first groove of first groove.This is designed to be carried for the motion of key body
For enough inner spaces, ensure trigger action it is firm while optimize user's use feeling.
Further, first groove and the second groove are oppositely arranged the host cavity to be formed and house the connector, institute
State the first groove and the second groove is respectively arranged with two.Two connectors are separately mounted to receive in two cavity volumes, are that key body is carried
For the support of stabilization.
Further, the upper surface of first groove extends to form one and keep out along the opening direction of first groove
Face, when the key body moves to the second place by first position, the face of keeping out offsets with the upper surface of second groove；
When key body moves to first position by the second place, the face of keeping out offsets with the connector.The design is advantageous in that
The motion for being capable of effectively limit key body is interval.
Further, the ratio of the A/F of first groove and the second groove is 0.8~2.The selection of the numerical value
Taken into account production convenience and it is actually used in effect.
Further, the first end of the connector and the body interference fit.Interference fit avoids being produced because of loosening
The raw relative travel between key body and connector.
Further, connecting portion is provided between the first end and the second end, the connecting portion is in the key body direction of motion
On thickness of the thickness less than the first end and the second end.Thinning connecting portion for key body can provide movement travel and reduce
Key body is in motion process since it is desired that removing the resistance for overcoming connector deformation and producing.
Further, the connector forms the first cambered surface and the second cambered surface, first cambered surface respectively in upper and lower both sides
Be located along the same line with the center of circle of the second cambered surface and second cambered surface curvature less than or equal to first cambered surface curvature.
Further, the connector is integrated and generally continuous arcuate structure.The structure energy of consecutive variations
It is enough effectively to reduce part itself stress concentration, so as to increase the service life.
Further, the bottom of the key body is provided with the pushing portion between two second grooves.
A kind of electronic equipment, the equipment includes：
Processing assembly；
Memory for storing processing assembly executable instruction；
Press-key structure is provided with the electronic equipment, the press-key structure includes body, is plugged on the intrinsic key body
And the connector in the body and key body is arranged on, the connector includes being arranged on the intrinsic first end and setting
The second end in the key body, second end and key body interference fit.Supported by connector and reset key body, Neng Gouti
Gao Jianti's is firm, so that preferably response user operation.
The technical scheme provided by this disclosed embodiment can include the following benefits：
1st, mobile phone from exterior side switch with can deformation connector instead of correlation technique in metal or plastic cement catch,
Without motion stroke between connector and key body, key body is easily rocked and has the shortcomings that abnormal sound in solving correlation technique；
2nd, two sections of connectors of insertion can compensate the abrasion of key body by self-deformation, solve and easily grind in correlation technique
Damage, the shortcoming of short life；
3rd, the connector that grafting is installed is convenient operates, and solves complex process in correlation technique, the shortcoming of high cost；
4th, the connector of interference fit is capable of the key body and body of automatic adaptation difference tolerance, and it is right in correlation technique to solve
Accurate to dimension requirement shortcoming high.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the disclosure
Example, and it is used to explain the principle of the disclosure together with specification.
Fig. 1 is a kind of schematic diagram of the press-key structure shown in the exemplary embodiment of the disclosure one；
Fig. 2 is the internal structure schematic diagram of press-key structure in Fig. 1；
Fig. 3 is the electronic equipment schematic diagram shown in the exemplary embodiment of the disclosure one.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in implementation method do not represent all implementation methods consistent with the disclosure.Conversely, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects described in detail in claims, the disclosure.
The term used in the disclosure is the purpose only merely for description specific embodiment, and is not intended to be limiting the disclosure.
" one kind ", " described " and " being somebody's turn to do " of singulative used in disclosure and the accompanying claims book is also intended to include majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wraps
May be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the disclosure
A little information should not necessarily be limited by these terms.These terms are only used for being distinguished from each other open same type of information.For example, not departing from
In the case of disclosure scope, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
Fig. 1 is a kind of schematic diagram of the press-key structure shown in the exemplary embodiment of the disclosure one, and Fig. 2 is by bond in Fig. 1
The internal structure schematic diagram of structure；Hereinafter represented as being not known, described above-below direction is the direction of motion of key body 10, such as Fig. 1
Shown in~2：
A kind of press-key structure, including body 11, the key body 10 that is plugged in the body 11 and it is arranged on the body 11
With the connector 12 in key body 10, the connector 12 includes the first end 121 that is arranged in the body 11 and is arranged on described
The second end 123 in key body 10, second end 123 and the interference fit of key body 10.
The two ends of connector 12 connect body 11 and key body 10 respectively, by the limit key body 10 of the second end 123 of interference fit
Free travel, reduce part coordinate rocks, the design be advantageous in that key body 10 install after be difficult to rock, service life
Long, production economy is easy.Connector 12 can select plastic cement material.Plastic cement material elasticity easy to process has one while preferable
Fixed intensity.
In one embodiment, body 11 is provided with the first groove 114 for housing the first end 121, on the key body 10
It is provided with the second groove 101 for housing second end 123.The groove 101 of first groove 114 and second is oppositely arranged to form receipts
Hold the host cavity of the connector 12, the groove 101 of first groove 114 and second is respectively arranged with two.
When the key body 10 is in the first position not by external force, the lower surface 103 of second groove 101 is higher than institute
State the lower surface 116 of the first groove 114；When key body 10 is in the second place of stress trigger action, second groove 101
Lower surface 103 less than first groove 114 lower surface 116 or concordant with the lower surface 116 of first groove 114.
The upper surface of first groove 114 extends to form one and keep out face along the opening direction of first groove 114
113, when the key body 10 moves to the second place by first position, described to keep out face 113 upper with second groove 101
Surface 104 offsets；When key body 10 moves to first position by the second place, the face 113 of keeping out is with the phase of the connector 12
Support.In the present embodiment, up big and down small in the volume such as Fig. 2 of key body 10, the presence for keeping out face 113 being capable of effective limit key body 10
Motion is interval, extends the life-span of connector 12, it is also possible to avoids should be the excessive switch member 112 on electronic equipment of force and causes to damage
It is bad.
The ratio of the A/F of the groove 101 of first groove 114 and second is 1.2.The selection of the numerical value takes into account
The convenience of production and it is actually used in effect.
In one embodiment, the first end 121 of the connector 12 and the interference fit of the body 11.Interference Fit Design
Be advantageous in that the spacious amount that can be reduced between body 11, key body 10 and connector 12, so as to avoid key body 10 loosening and
Rock.
In one embodiment, connecting portion 122 is provided between the end 123 of the first end 121 and second, the connecting portion 122 exists
Thickness of the thickness less than the end 123 of the first end 121 and second in the direction of motion of key body 10.
The connector 12 forms the first cambered surface 124 and the second cambered surface 125, first cambered surface respectively in upper and lower both sides
124 and second cambered surface 125 the center of circle be located along the same line and second cambered surface 125 curvature be less than or equal to first arc
The curvature in face 124.
The connector 12 is integrated and generally continuous arcuate structure.
The so design of connector 12 can include the following benefits：
1st, for space is conceded in the motion of key body 10.As shown in figure 1, when key body 10 is up or descending, the first groove 114
Dislocation can be produced with the second groove 101, the second thinning cambered surface 125 can be that the lower surface 103 of the second groove 101 concedes space,
The first thinning cambered surface 124 can be that space is conceded in the upper surface 115 of the first groove 114, optimize motion process；
2nd, the trigger force of button, lifting user's impression are reduced.Connector 12 is plastic cement material, adds two ends and is interference and matches somebody with somebody
The grafting of conjunction, deformation power is larger, and thinning connecting portion 122 can provide the space of release deformation, reduces deformation power, it is to avoid occur
The too small situation of button trigger force；
3rd, for guard block, the life-span is extended.The continuous arcuate structure of connector 12 is advantageous in that and can reduce stress collection
In, so as to extend the life-span.
In one embodiment, the bottom of the key body 10 is provided with the pushing portion 102 between two second grooves 101.Support
Pushed section 102 is arranged in the bottom centre position of key body 10 in the present embodiment, but simultaneously the position of pushing portion 102 is not restricted to key
The geometric center of the bottom of body 10, only with respect to the middle part for both sides.The design is advantageous in that can provide more stable
Triggering effect.
In use：
When user applies pressure to key body 10, key body 10 has the trend for moving downward, the first groove 114 and second downwards
The dislocation motion of groove 101, overcomes the deformation elastic force of connector 12 to enable that key body 10 moves downwardly to pushing portion 102 and electronics
Switch member 112 on equipment mainboard 111 is acted on, and switch member 112 transmits signals to processing assembly to continue relative users operation.
After the completion of triggering, user removes the pressure being applied on key body 10, in being restored back to for the self-deformation of connector 12
Cheng Zhong, key body 10 is resetted upwards, and wait is triggered next time.
Fig. 3 is the electronic equipment schematic diagram shown in the exemplary embodiment of the disclosure one, and as described in Fig. 1~3, a kind of electronics sets
Standby, the equipment includes：
Processing assembly；
Memory for storing processing assembly executable instruction；
Press-key structure is provided with the electronic equipment, the press-key structure includes body 11, is plugged in the body 11
Key body 10 and the connector 12 being arranged in the body 11 and key body 10, the connector 12 include being arranged on the body 11
Interior first end 121 and the second end 123 being arranged in the key body 10, second end 123 and the interference fit of key body 10.
Supported by connector 12 and reset key body 10, it is possible to increase key body 10 it is firm, so as to preferably respond user
Operation.
Electronic equipment 700 can be mobile phone, computer, digital broadcast terminal, messaging devices, game control
The electronic equipments such as platform, tablet device, Medical Devices, body-building equipment, personal digital assistant.
Electronic equipment 700 can include following one or more assemblies：Processing assembly 702, memory 704, power supply module
706, multimedia groupware 708, audio-frequency assembly 710, the interface 712 of input/output (I/O), sensor cluster 714, and communication
Component 716.
The integrated operation of the usual control electronics 700 of processing assembly 702, such as with display, call, data are led to
Letter, camera operation and the associated operation of record operation.Treatment element 702 can include one or more processors 720 to hold
Row instruction, to complete the response with above-mentioned button.Additionally, processing assembly 702 can include one or more modules, it is easy to treatment
Interaction between component 702 and other assemblies.For example, processing component 702 can include multi-media module, to facilitate multimedia group
Interaction between part 708 and processing assembly 702.
Memory 704 is configured as storing various types of data supporting the operation in equipment 700.These data are shown
Example includes the instruction for any application program or method operated on electronic equipment 700, contact data, telephone directory number
According to, message, picture, video etc..Memory 704 can by any kind of volatibility or non-volatile memory device or they
Combination realize that such as static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM) is erasable
Programmable read only memory (EPROM), programmable read only memory (PROM), read-only storage (ROM), magnetic memory, quick flashing
Memory, disk or CD.
Electric power assembly 706 provides electric power for the various assemblies of electronic equipment 700.Electric power assembly 706 can include power supply pipe
Reason system, one or more power supplys, and other generate, manage and distribute the component that electric power is associated with for electronic equipment 700.
Multimedia groupware 708 is included in one screen of output interface of offer between the electronic equipment 700 and user.
In certain embodiments, screen can include liquid crystal display (LCD) and touch panel (TP).If screen includes touch surface
Plate, screen may be implemented as touch-screen, to receive the input signal from user.Touch panel is touched including one or more
Sensor is with the gesture on sensing touch, slip and touch panel.The touch sensor can not only sensing touch or slip
The border of action, but also the detection duration related to the touch or slide and pressure.In certain embodiments,
Multimedia groupware 708 includes a front camera and/or rear camera.When equipment 700 is in operator scheme, mould is such as shot
When formula or video mode, front camera and/or rear camera can receive outside multi-medium data.Each preposition shooting
Head and rear camera can be a fixed optical lens systems or with focusing and optical zoom capabilities.
Audio-frequency assembly 710 is configured as output and/or input audio signal.For example, audio-frequency assembly 710 includes a Mike
Wind (MIC), when electronic equipment 700 is in operator scheme, such as call model, logging mode and speech recognition mode, microphone
It is configured as receiving external audio signal.The audio signal for being received can be further stored in memory 704 or via logical
Letter component 716 sends.In certain embodiments, audio-frequency assembly 710 also includes a loudspeaker, for exports audio signal.
, to provide interface between processing assembly 702 and peripheral interface module, above-mentioned peripheral interface module can for I/O interfaces 712
To be keyboard, click wheel, button etc..These buttons may include but be not limited to：Home button, volume button, start button and lock
Determine button.
Sensor cluster 714 includes one or more sensors, the state for providing various aspects for electronic equipment 700
Assessment.For example, sensor cluster 714 can detect the opening/closed mode of equipment 700, the relative positioning of component, such as institute
Display and keypad that component is electronic equipment 700 are stated, sensor cluster 714 can also detect electronic equipment 700 or electronics
The position of 700 1 components of equipment changes, and user is presence or absence of with what electronic equipment 700 was contacted, the orientation of electronic equipment 700
Or the temperature change of acceleration/deceleration and electronic equipment 700.Sensor cluster 714 can include proximity transducer, be configured to
The presence of object near being detected when without any physical contact.Sensor cluster 714 can also include optical sensor, such as
CMOS or ccd image sensor, for being used in imaging applications.In certain embodiments, the sensor cluster 714 can be with
Including acceleration transducer, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 716 is configured to facilitate the communication of wired or wireless way between electronic equipment 700 and other equipment.
Electronic equipment 700 can access the wireless network based on communication standard, such as WiFi, 2G or 3G, or combinations thereof.Show at one
In example property embodiment, communication component 716 receives broadcast singal or broadcast from external broadcasting management system via broadcast channel
Relevant information.In one exemplary embodiment, the communication component 716 also includes near-field communication (NFC) module, short to promote
Cheng Tongxin.For example, radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band can be based in NFC module
(UWB) technology, bluetooth (BT) technology and other technologies are realized.NFC module can be arranged in the installation portion position, installation portion
The signal transmission effect of NFC module can be optimized.
In the exemplary embodiment, electronic equipment 700 can be by one or more application specific integrated circuits (ASIC), number
Word signal processor (DSP), digital signal processing appts (DSPD), PLD (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized.
In the exemplary embodiment, the non-transitorycomputer readable storage medium including instructing is additionally provided, for example, is wrapped
The memory 704 of instruction is included, for example, the non-transitorycomputer readable storage medium can be ROM, random access memory
(RAM), CD-ROM, tape, floppy disk and optical data storage devices etc..
The function of unit and the implementation process of effect correspond to step in specifically referring to the above method in said apparatus
Implementation process, will not be repeated here.
The preferred embodiment of the disclosure is the foregoing is only, is not used to limit the disclosure, all essences in the disclosure
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of disclosure protection.
Claims (12)
1. a kind of press-key structure, it is characterised in that including body, be plugged on the intrinsic key body and be arranged on the body
With the connector in key body, the connector is including being arranged on the intrinsic first end and be arranged in the key body second
End, second end and key body interference fit.
2. press-key structure as claimed in claim 1, it is characterised in that the body is provided with and houses the first of the first end
Groove, the key body is provided with the second groove for housing second end.
3. press-key structure as claimed in claim 2, it is characterised in that when the key body is in first position not by external force
When, the lower surface of the lower surface higher than first groove of second groove；When key body is in the second of stress trigger action
During position, the lower surface of second groove is put down less than the lower surface of first groove or with the lower surface of first groove
Together.
4. press-key structure as claimed in claim 2, it is characterised in that first groove and the second groove are oppositely arranged to be formed
The host cavity of the connector is housed, first groove and the second groove are respectively arranged with two.
5. press-key structure as claimed in claim 3, it is characterised in that the upper surface of first groove is along first groove
Opening direction extend to form one and keep out face, when the key body moves to the second place by first position, it is described keep out face with
The upper surface of second groove offsets；When key body moves to first position by the second place, the face of keeping out is with the company
Fitting offsets.
6. press-key structure as claimed in claim 2, it is characterised in that the A/F of first groove and the second groove
Ratio is 0.8~2.
7. press-key structure as claimed in claim 1, it is characterised in that the first end of the connector and the body interference are matched somebody with somebody
Close.
8. press-key structure as claimed in claim 1, it is characterised in that be provided with connecting portion between the first end and the second end,
Thickness of the connecting portion in the key body direction of motion is less than the first end and the thickness at the second end.
9. press-key structure as claimed in claim 1, it is characterised in that the connector forms the first arc respectively in upper and lower both sides
The center of circle of face and the second cambered surface, first cambered surface and the second cambered surface is located along the same line and the curvature of second cambered surface is small
In the curvature equal to first cambered surface.
10. press-key structure as claimed in claim 1, it is characterised in that the connector is integrated and generally connects
Continuous arcuate structure.
11. press-key structures as claimed in claim 4, it is characterised in that the bottom of the key body is provided with positioned at two second grooves
Between pushing portion.
12. a kind of electronic equipment, it is characterised in that the equipment includes：
Processing assembly；
Memory for storing processing assembly executable instruction；
Be provided with press-key structure on the electronic equipment, the press-key structure include body, be plugged on the intrinsic key body and
The connector in the body and key body is arranged on, the connector includes being arranged on the intrinsic first end and is arranged on institute
State the second end in key body, second end and key body interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185053.0A CN106710922B (en) | 2016-12-20 | 2016-12-20 | A kind of press-key structure and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185053.0A CN106710922B (en) | 2016-12-20 | 2016-12-20 | A kind of press-key structure and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106710922A true CN106710922A (en) | 2017-05-24 |
| CN106710922B CN106710922B (en) | 2019-10-11 |
Family
ID=58939444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611185053.0A Active CN106710922B (en) | 2016-12-20 | 2016-12-20 | A kind of press-key structure and electronic equipment |
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| Country | Link |
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| CN (1) | CN106710922B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107896258A (en) * | 2017-10-23 | 2018-04-10 | 广东欧珀移动通信有限公司 | The housing unit and terminal of terminal |
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| CN201956240U (en) * | 2010-12-22 | 2011-08-31 | 海尔集团公司 | Key structure |
| CN202503837U (en) * | 2012-03-22 | 2012-10-24 | 广州三星通信技术研究有限公司 | Portable electronic equipment and side key installation structure thereof |
| CN202617533U (en) * | 2012-05-11 | 2012-12-19 | 广州三星通信技术研究有限公司 | Portable electronic equipment and side key installation structure thereof |
| CN103258675A (en) * | 2012-02-21 | 2013-08-21 | 三星电子株式会社 | Side key for portable terminal |
| CN206331946U (en) * | 2016-12-20 | 2017-07-14 | 北京小米移动软件有限公司 | A kind of press-key structure and electronic equipment |
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| CN101075505A (en) * | 2006-05-15 | 2007-11-21 | 三星电机株式会社 | Input device |
| CN201956240U (en) * | 2010-12-22 | 2011-08-31 | 海尔集团公司 | Key structure |
| CN103258675A (en) * | 2012-02-21 | 2013-08-21 | 三星电子株式会社 | Side key for portable terminal |
| CN202503837U (en) * | 2012-03-22 | 2012-10-24 | 广州三星通信技术研究有限公司 | Portable electronic equipment and side key installation structure thereof |
| CN202617533U (en) * | 2012-05-11 | 2012-12-19 | 广州三星通信技术研究有限公司 | Portable electronic equipment and side key installation structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107896258A (en) * | 2017-10-23 | 2018-04-10 | 广东欧珀移动通信有限公司 | The housing unit and terminal of terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106710922B (en) | 2019-10-11 |
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