CN205910669U - Structure of keyboard - Google Patents
Structure of keyboard Download PDFInfo
- Publication number
- CN205910669U CN205910669U CN201620357308.6U CN201620357308U CN205910669U CN 205910669 U CN205910669 U CN 205910669U CN 201620357308 U CN201620357308 U CN 201620357308U CN 205910669 U CN205910669 U CN 205910669U
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- Prior art keywords
- active key
- pressure
- conductive spring
- firing point
- key
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- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000010304 firing Methods 0.000 claims description 45
- 239000012634 fragment Substances 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 15
- 239000000428 dust Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Push-Button Switches (AREA)
Abstract
The utility model belongs to the technical field of the computer fittings technique and specifically relates to indicate a structure of keyboard, including circuit board and key switch, the circuit board is equipped with breakover point, the key switch includes that casing, activity set up in the movable button of this casing, are used for to drive that this activity button resets resets to reach and drive the pressure of being connected with this activity button and touch and switch on the spring, press movable button when upper end, should activity button drive pressure touch and switch on spring follow casing bottom and stretch out butt breakover point. The utility model discloses its compact structure, it adopts, and key switch, stability are good, manufacturing and use cost are low, the spare part that significantly reduces, reduce manufacturing cost, improve the efficiency of equipment, the change of be convenient for maintenance and part.
Description
Technical field
This utility model is related to computer fittings technical field, refers in particular to a kind of keyboard structure.
Background technology
For the such as keyboard of human-computer interaction device now, mouse, the input product such as button, the key of its impact quality
Judge stability, sensitivity and the long-life of prototype part depending on electric response during input.Modal computer week at present
The side input equipment such as product such as keyboard, mouse, can the key of impact serviceability timely as electrical number during man-machine interaction
Response, and produce the signal of telecommunication whether rationally it is critical only that physical mechanism that the signal of telecommunication produces, conventional films silica gel keyboard is logical
Cross the contact of flexible circuit board bilevel firing point and produce the signal of telecommunication, traditional mechanical keyboard is by two pole in mechanical switch
Property shell fragment conducting produce the signal of telecommunication, and this two classes product all suffers from the critical defect of a life-span and stability.
One button of traditional general thin silica gel keyboard is a signal coding unit, and all signals of such product
Coding unit is integrated into an entirety because of mechanism's reason, and therefore when a unit is destroyed, then whole equipment is just damaged.
According to modular switch as a unit, these units are integrated into an equipment by way of array combination,
When one of unit is impaired, by simple substitute mode change modular unit, just can solve such product long-life and
Easily keep in repair bottleneck.
One keyboard structure of traditional mechanical keyboard is a signal coding unit although a unit quilt of such product
Make the form of module, from the defect to a certain degree solving traditional general thin silica gel keyboard on the ground.Traditional mechanical keyboard
Switch, it include opening close the lid, lower cover of uncapping, plastic cement active key, plastic cement activity external member, metal conduction moving plate, metal conduction
Stator and pressure control spring, during work, under the driving of plastic cement active key and plastic cement activity external member, make metal conduction moving plate
Mobile, the signal of telecommunication is turned on the wiring board of bottom using metal conduction moving plate and metal conduction stator.
But traditional mechanical keyboard adopts metal conduction moving plate and metal conduction stator to turn on the signal of telecommunication, the longevity of such switch
Life is depending on the fatigue resistance of metal conduction moving plate and metal conduction stator, high to sheet metal material and manufacture requirements, increases
Use cost；Again because metal conduction moving plate and metal conduction stator easily rub static electrification, during use, easy dust suction, leads to card
Dead or wear phenomenon, the shell fragment of metal conduction moving plate and metal conduction stator touch switch is easily damaged, changes module
Difficulty, switching stability and short life, and lead to the keyboard life of the such switch of whole use, stability difference and also use cost is high.
In sum, traditional mechanical keyboard, manufacturing process is complicated, and manufacturing cost and use cost is high, and service life is short, and stability is poor, defect
Fairly obvious, need badly and a kind of new keyboard structure is provided.
Content of the invention
The technical problems to be solved in the utility model is to provide a kind of compact conformation, good stability, manufacturing cost and use cost
Low, long service life keyboard structure.
In order to solve above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of keyboard structure, including wiring board and key switch, described wiring board is provided with firing point；Described key switch bag
Include housing, be movably set in this housing active key, for drive this active key reset return unit and with this activity by
The pressure of key drive connection touches conductive spring；During pressing active key upper end, this active key driving pressure touches conductive spring from housing
Abutting firing point is stretched out in bottom.
Preferably, described wiring board is flexible circuit board.
Another preferably described wiring board is hard wiring board, and described firing point includes being arranged at the of hard wiring board
One firing point and the second firing point；
During pressing active key upper end, the tactile conductive spring of this active key driving pressure is stretched out abutting first from housing bottom and is led
Logical point and the second firing point.
Wherein, described first firing point and the equal semicircular in shape of the second firing point.
Wherein, described key switch also includes keycap, and described housing includes base and the upper lid with this base pairing.
Wherein, described base is provided with containing cavity and the bottom outlet connecting with this containing cavity；Described upper lid is provided with accommodating with this
The movable chamber of chamber connection；Described active key and pressure are touched conductive spring and be may be contained within movable chamber, during pressing active key upper end, should
Active key driving pressure is touched conductive spring and is stretched out from bottom outlet.
Wherein, described upper lid is provided with clamping ear, and this clamping ear is provided with draw-in groove；Described base is provided with card convex, base pair
During the upper lid closing, card convex and draw-in groove clamping.
Wherein, also include the feedback force shell fragment for feedback activity key activities；Feedback force shell fragment include installation portion and by
The kink of this installation portion bending downwards.
Wherein, described upper lid is provided with shell fragment mounting groove, and described installation portion is arranged at this shell fragment mounting groove, described kink
Stretch out shell fragment mounting groove, and abut with the side of active key.
Wherein, described active key is provided with the installation cavity connecting with containing cavity and the last item being arranged at this installation cavity；Multiple
Position part is pressure control spring, and this pressure control spring is arranged in installation cavity and containing cavity, and described pressure is touched conductive spring and worn
In pressure control spring, pressure touches conductive spring and last item drive connection.
This utility model, when actually used, presses active key, this active key moves in the housing, and then makes activity
Button promotes the tactile conductive spring bottom from housing of pressure to stretch out, and this pressure touches the firing point that conductive spring abuts on wiring board, thus
Send the signal of telecommunication, input is corresponding to be instructed, after pressure release, return unit drives active key and pressure to touch conductive spring and reset, pressure
Tactile conductive spring is separated with the firing point on wiring board, disconnects the signal of telecommunication.It has a beneficial effect as follows:
(1) this utility model adopts key switch, its compact conformation, greatly reduces parts, reduces manufacturing cost, improves
The efficiency of assembling, is easy to keep in repair the replacing with part.
(2) this utility model touches conductive spring using active key driving pressure and abuts the firing point on wiring board to trigger electricity
Signal, pressure touches conductive spring long service life, will not be disturbed by dust, not high to the water proof and dust proof performance requirement of housing,
Relatively the signal of telecommunication, long service life are triggered using existing sheet metal, to stablize, manufacturing cost and use cost is low, practical.
(3) this utility model touches conductive spring using active key driving pressure and abuts the firing point on wiring board to trigger electricity
Signal, this pressure touches conductive spring and wiring board flexible contact, it is to avoid produce abrasion during rigid contact, improves service life, and
Do not need assist side triggering connection terminal, reduce manufacturing cost.
(4) this utility model touches conductive spring using active key driving pressure and abuts the firing point on wiring board to trigger electricity
Signal, touches the size of conductive spring by adjusting this pressure, realizes the speed electrically conducting, it is easy to control, and adjustability is good, meets
User's preference requires.
(5) this utility model substitutes common conventional films keyboard, can make each signal of telecommunication signaling of conventional films keyboard
Unit realizes modularity, maintenance convenience when so the common point of increase product and product are impaired；By new using this practicality
Type, to substitute common traditional mechanical, fundamentally changes the traditional electrical occurring mode of mechanical switch, can greatly simplify and optimize
The manufacturing process of mechanical switch keyboard and the cost of repair and maintenance.
Brief description
Fig. 1 is the structural representation of this utility model embodiment one.
Fig. 2 is the partial structural diagram of the hard wiring board described in this utility model embodiment one.
Fig. 3 is the perspective view of the key switch described in this utility model embodiment one.
Fig. 4 is the perspective view that key switch described in this utility model embodiment one presses during active key.
Fig. 5 is the stereochemical structure decomposing schematic representation of the key switch described in this utility model embodiment one.
Fig. 6 is another stereochemical structure decomposing schematic representation of the key switch described in this utility model embodiment one.
Fig. 7 is the cross-section structure decomposing schematic representation of key switch described in this utility model embodiment one.
Fig. 8 is the perspective view of the feedback force shell fragment described in this utility model embodiment one.
Fig. 9 is the structural representation of this utility model embodiment two.
Specific embodiment
For the ease of the understanding of those skilled in the art, this utility model is made further with accompanying drawing with reference to embodiment
Explanation, the content that embodiment refers to is not to restriction of the present utility model.
Embodiment one.
As shown in Figures 1 to 8, a kind of keyboard structure, including wiring board 10 and key switch 20, described wiring board 10 is provided with
Firing point；Described key switch 20 include housing 1, the active key 2 being movably set in this housing 1, be used for driving this activity by
The return unit 3 of key 2 reset and the pressure with this active key 2 drive connection touch conductive spring 4；During pressing active key 2 upper end, should
Active key 2 driving pressure is touched conductive spring 4 and is stretched out abutting firing point from housing 1 bottom.
When actually used, press active key 2, this active key 2 moves within the case 1, and then so that active key 2 is pushed away
Dynamic pressure is touched conductive spring 4 and is stretched out bottom from housing 1, and this pressure touches the firing point that conductive spring 4 abuts on wiring board 10, thus sending out
Go out the signal of telecommunication, input is corresponding to be instructed, after pressure release, return unit 3 drives active key 2 and pressure to touch conductive spring 4 and reset, pressure
Tactile conductive spring 4 is separated with the firing point on wiring board 10, disconnects the signal of telecommunication.
This utility model adopts key switch 20, its compact conformation, greatly reduces parts, reduces manufacturing cost, improves
The efficiency of assembling, is easy to keep in repair the replacing with part.
This utility model touches conductive spring 4 using active key 2 driving pressure and abuts the firing point on wiring board 10 to trigger
The signal of telecommunication, pressure touches conductive spring 4 long service life, will not be disturbed by dust, to the water proof and dust proof performance requirement of housing 1 not
Height, relatively to trigger the signal of telecommunication, long service life using existing sheet metal, to stablize, manufacturing cost and use cost is low, practicality
By force.
This utility model touches conductive spring 4 using active key 2 driving pressure and abuts the firing point on wiring board 10 to trigger
The signal of telecommunication, this pressure touches conductive spring 4 and wiring board 10 flexible contact, it is to avoid produce abrasion during rigid contact, improves service life,
And do not need assist side 10 triggering connection terminal, reduce manufacturing cost.
This utility model touches conductive spring 4 using active key 2 driving pressure and abuts the firing point on wiring board 10 to trigger
The signal of telecommunication, touches the size of conductive spring 4 by adjusting this pressure, realizes the speed electrically conducting, it is easy to control, and adjustability is good,
Meet user's preference requirement.
This utility model substitutes common conventional films keyboard, can make each signal of telecommunication coding unit of conventional films keyboard
Realize modularity, maintenance convenience when so the common point of increase product and product are impaired；By using this utility model
Substitute common traditional mechanical, fundamentally change the traditional electrical occurring mode of mechanical switch, can greatly simplify and optimize machinery
The manufacturing process of switchboards and the cost of repair and maintenance.
In the present embodiment, described wiring board 10 is hard wiring board, and described firing point includes being arranged at hard wiring board
First firing point 30 and the second firing point 40；Pressing active key 2 upper end when, this active key 2 driving pressure touch conductive spring 4 from
Abutting the first firing point 30 and the second firing point 40 are stretched out in housing 1 bottom.
During use, pressure is touched conductive spring 4 and is stretched out bottom from housing 1, and this pressure is touched conductive spring 4 and abutted the first firing point 30
With the second firing point 40, the first firing point 30 and the second firing point 40 is made to turn on, thus sending the signal of telecommunication, input refers to accordingly
Order, after pressure release, return unit 3 drives active key 2 and pressure to touch conductive spring 4 and reset, and pressure touches conductive spring 4 and the first conducting
Point 30 and the second firing point 40 separate.
As shown in Fig. 2 in the present embodiment, described first firing point 30 and the equal semicircular in shape of the second firing point 40.It takies
Area is little, and big with tactile conductive spring 4 contact area of pressure.
In the present embodiment, also include the fixed plate 50 for installing described key switch 20.Key switch 20 is contained in solid
Fixed board 50, is easily installed and fixes.
In the present embodiment, described key switch 20 also includes keycap 60, and described housing 1 includes base 5 and right with this base 5
The upper lid 6 closing.Keycap 60 is covered on key switch 20, is easy to the input of character, setting and the upper lid 6 of base 5 pairing, is easy to
Assembling parts and dismounting in housing 1.
In the present embodiment, described base 5 is provided with containing cavity 51 and the bottom outlet 52 connecting with this containing cavity 51；Described upper lid 6
It is provided with the movable chamber 61 connecting with this containing cavity 51；Described active key 2 and pressure are touched conductive spring 4 and be may be contained within movable chamber
61, during pressing active key 2 upper end, this active key 2 driving pressure is touched conductive spring 4 and is stretched out from bottom outlet 52.Containing cavity 51 and work
Dynamic chamber 61 constitutes the guide groove for active key 2 activity, and active key 2 can in guide groove slidably, this compact conformation, activity
Button 2 is mobile steadily reliable.
In the present embodiment, described upper lid 6 is provided with clamping ear 62, and this clamping ear 62 is provided with draw-in groove 621；Described base 5
It is provided with card convex 53, during the upper lid 6 of base 5 pairing, card convex 53 and draw-in groove 621 clamping, its clamping is reliable, easy accessibility.
In the present embodiment, also include the feedback force shell fragment 7 for feedback activity button 2 activity.
The product being switched using this, has more preferably FORCE FEEDBACK, sound than conventional films keyboard in terms of using feature
Feedback and shorter response time, have great lifting in terms of ergonomics and in terms of the sensitivity of product.
Specifically, described feedback force shell fragment 7 includes installation portion 71 and the kink 72 being bent downwards by this installation portion 71.Institute
State lid 6 and be provided with shell fragment mounting groove 64, described installation portion 71 is arranged at this shell fragment mounting groove 64, and described kink 72 stretches out bullet
Piece mounting groove 64, and abut with the side of active key 2.
Feedback force shell fragment 7 can freely be beated in shell fragment mounting groove 64, when active key 2 is moved in guide groove
Wait, slided by active key 2 and oppress feedback force shell fragment 7, make active key 2 by one of specific feedback power shell fragment 7 applying
The counteracting force of cataclysm, thus allow active key 2 on the basis of the counteracting force that return unit 3 is bestowed, then a plus cataclysm
Counteracting force so that active key 2 have meet ergonomics disconnected fall feel and experience.
When active key 2 compressing feedback force shell fragment 7, freely the feedback force shell fragment 7 of activity passes through active force and retroaction
The principle of power, produces the abrupt release of a power so that feedback force shell fragment 7 produces the beating an of moment, and allows feedback force shell fragment 7
Moment clashes into housing 1 or feedback force shell fragment 7, and the high frequency forming feedback force shell fragment 7 trembles, and vibrates air and produces clear and melodious sound
Ring, increase the Experience Degree of product.
In the present embodiment, described active key 2 is provided with the installation cavity 21 being connected with containing cavity 51 and is arranged at this installation
The last item 22 in chamber 21；Return unit 3 is pressure control spring, and this pressure control spring is arranged in installation cavity 21 and containing cavity 51,
Described pressure is touched conductive spring 4 and is arranged in pressure control spring, and pressure touches conductive spring 4 and last item 22 drive connection.
During pressing active key 2, this active key 2 compression pressure controls spring, and this active key 2 promotes pressure to touch and leads simultaneously
Logical spring 4 stretches out pressure the first firing point 30 and the second firing point 40 from bottom outlet 52, after the completion of triggering, on releasing activity button 2
Pressure, active key 2 and pressure touch conductive spring 4 and rebound by pressure control spring.
Embodiment two.
The present embodiment two is with the difference of embodiment one: described wiring board 10 is flexible circuit board.Flexible circuit board is
The wiring board that existing common keyboard adopts, which is provided with some firing points.During use, pressure touches conductive spring 4 bottom from housing 1
Stretch out, this pressure touches the firing point that conductive spring 4 abuts flexible circuit board, thus sending the signal of telecommunication, input is corresponding to be instructed, pressure
After release, return unit 3 driving active key 2 and pressure are touched conductive spring 4 and are resetted, and the tactile conductive spring 4 of pressure is led with flexible circuit board
Logical point separates.In the present embodiment, using flexible circuit board, it is easy to use, reduces manufacturing cost.
Above-described embodiment is this utility model preferably implementation, and in addition, this utility model can also other side
Formula is realized, and on the premise of conceiving without departing from the technical program, any obvious replacement is all in protection model of the present utility model
Within enclosing.
Claims (10)
1. a kind of keyboard structure, including wiring board (10) and key switch (20) it is characterised in that: described wiring board (10) is provided with
Firing point；Described key switch (20) includes housing (1), is movably set in the active key (2) of this housing (1), is used for driving
Return unit (3) that this active key (2) resets and the pressure with this active key (2) drive connection touch conductive spring (4)；
Pressing active key (2) upper end when, this active key (2) driving pressure touch conductive spring (4) from housing (1) bottom stretch out to
Connect firing point.
2. a kind of keyboard structure according to claim 1 it is characterised in that: described wiring board (10) be flexible circuit board.
3. a kind of keyboard structure according to claim 1 it is characterised in that: described wiring board (10) be hard wiring board,
Described firing point includes the first firing point (30) and the second firing point (40) being arranged at hard wiring board；
Pressing active key (2) upper end when, this active key (2) driving pressure touch conductive spring (4) from housing (1) bottom stretch out to
Connect the first firing point (30) and the second firing point (40).
4. a kind of keyboard structure according to claim 3 it is characterised in that: described first firing point (30) and second conducting
Point (40) all semicirculars in shape.
5. a kind of keyboard structure according to claim 1 it is characterised in that: described key switch (20) also includes keycap
(60), described housing (1) includes base (5) and the upper lid (6) with this base (5) pairing.
6. a kind of keyboard structure according to claim 5 it is characterised in that: described base (5) be provided with containing cavity (51) and
The bottom outlet (52) connecting with this containing cavity (51)；Described upper lid (6) is provided with the movable chamber (61) connecting with this containing cavity (51)；
Described active key (2) and pressure are touched conductive spring (4) and be may be contained within movable chamber (61), during pressing active key (2) upper end,
This active key (2) driving pressure is touched conductive spring (4) and is stretched out from bottom outlet (52).
7. a kind of keyboard structure according to claim 5 it is characterised in that: described upper lid (6) is provided with clamping ear (62),
This clamping ear (62) is provided with draw-in groove (621)；
Described base (5) is provided with card convex (53), during upper lid (6) of base (5) pairing, card convex (53) and draw-in groove (621) clamping.
8. a kind of keyboard structure according to claim 5 it is characterised in that: also include for feedback activity button (2) live
Dynamic feedback force shell fragment (7)；
Feedback force shell fragment (7) includes installation portion (71) and the kink (72) by this installation portion (71) bending downwards.
9. a kind of keyboard structure according to claim 8 it is characterised in that: described upper lid (6) is provided with shell fragment mounting groove
(64), described installation portion (71) is arranged at this shell fragment mounting groove (64), and described kink (72) stretches out shell fragment mounting groove (64), and
Abut with the side of active key (2).
10. a kind of keyboard structure according to claim 6 it is characterised in that: described active key (2) be provided with accommodating
Installation cavity (21) and the last item (22) being arranged at this installation cavity (21) that chamber (51) connects；
Return unit (3) is pressure control spring, and this pressure control spring is arranged in installation cavity (21) and containing cavity (51), described
Pressure is touched conductive spring (4) and is arranged in pressure control spring, and pressure touches conductive spring (4) and last item (22) drive connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357308.6U CN205910669U (en) | 2016-04-26 | 2016-04-26 | Structure of keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357308.6U CN205910669U (en) | 2016-04-26 | 2016-04-26 | Structure of keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205910669U true CN205910669U (en) | 2017-01-25 |
Family
ID=57815837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620357308.6U Active CN205910669U (en) | 2016-04-26 | 2016-04-26 | Structure of keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205910669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107562231A (en) * | 2017-09-28 | 2018-01-09 | 惠州佳达隆电子科技有限公司 | A kind of mouse |
-
2016
- 2016-04-26 CN CN201620357308.6U patent/CN205910669U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107562231A (en) * | 2017-09-28 | 2018-01-09 | 惠州佳达隆电子科技有限公司 | A kind of mouse |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Building 3, No. 252 Jinsha East Road, Shajiao, Shipai Town, Dongguan City, Guangdong Province, 523525 Patentee after: DONGGUAN JUCHENG ELECTRONIC TECHNOLOGY CO.,LTD. Address before: 3rd Floor, Bairun Science and Technology Park, No. 93 Daxin Road, Dazhou Community, Qiaotou Town, Dongguan City, Guangdong Province, 523525 Patentee before: DONGGUAN JUCHENG ELECTRONIC TECHNOLOGY CO.,LTD. |