CN209046878U - A kind of electronic equipment - Google Patents
A kind of electronic equipment Download PDFInfo
- Publication number
- CN209046878U CN209046878U CN201821995748.XU CN201821995748U CN209046878U CN 209046878 U CN209046878 U CN 209046878U CN 201821995748 U CN201821995748 U CN 201821995748U CN 209046878 U CN209046878 U CN 209046878U
- Authority
- CN
- China
- Prior art keywords
- electronic equipment
- circuit board
- atrium
- sound
- loudspeaker
- 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.)
- Active
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
This application provides a kind of electronic equipment, the electronic equipment includes center, circuit board and loudspeaker, center is equipped with the first atrium, circuit board is set to the side of the opening direction of center the first atrium of direction, circuit board is equipped with the aperture being connected to the first atrium, loudspeaker is arranged in circuit board by aperture and is covered on the first atrium, so that the first atrium forms rear sound chamber, under the premise of ensure that the audio fruit out of loudspeaker, increase the length of circuit board, so that the width of circuit board can be reduced, to increase the space for the battery for accommodating electronic equipment that the width direction in circuit board is arranged, and then increase the capacity of the battery of electronic equipment, improve the cruising ability of electronic equipment.
Description
Technical field
This application involves the technical fields of electronic equipment, are specifically related to a kind of electronic equipment.
Background technique
In order to guarantee the normal work of loudspeaker, needs circuit board to be electrically connected and power for it, while on circuit board also
Equipped with multiple components, in order to meet the rational deployment of component, circuit board needs enough area, in the prior art, circuit board
With loudspeaker generally be arranged side by side, this mode arranged side by side, cause length of the circuit board in the two side by side direction compared with
It is small, it is larger so as to cause width, and then cause the space for being used to accommodate battery in electronic equipment smaller, battery capacity is also smaller.
Utility model content
On the one hand the embodiment of the present application provides a kind of electronic equipment, the electronic equipment includes center, circuit board and raises
Sound device, the center are equipped with the first atrium, and the circuit board is set to the center towards the opening of first atrium
The side in direction, the circuit board are equipped with the aperture being connected to first atrium, and the loudspeaker is worn by the aperture
Set on the circuit board and it is covered on first atrium, so that first atrium forms rear sound chamber.
Electronic equipment provided by the embodiments of the present application includes center, circuit board and loudspeaker, and center is equipped with the first atrium,
Circuit board is set to the side of the opening direction of center the first atrium of direction, and circuit board is equipped with and opens with what the first atrium was connected to
Hole, loudspeaker is arranged in circuit board by aperture and is covered on the first atrium, so that the first atrium forms rear sound chamber,
Under the premise of the audio fruit out that ensure that loudspeaker, the length of circuit board is increased, so that the width of circuit board can be reduced, from
And increase in the space of the battery for accommodating electronic equipment of the width direction setting of circuit board, and then increase electronic equipment
The capacity of battery improves the cruising ability of electronic equipment.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of electronic equipment embodiment provided by the present application；
Fig. 2 is the decomposition texture schematic diagram of electronic equipment partial structurtes in Fig. 1；
Fig. 3 is the schematic cross-sectional view that center is upward in III-III in Fig. 2；
Fig. 4 is the schematic cross-sectional view that circuit board and center assemble upwards in III-III in Fig. 2；
Fig. 5 is the diagrammatic cross-section that center in Fig. 2, circuit board and loudspeaker assemble upwards in III-III；
Fig. 6 is the diagrammatic cross-section of Standard in Fig. 2 cover plate and Fig. 5；
Fig. 7 is Fig. 2 cover plate structural schematic diagram upward in C；
Fig. 8 be in Fig. 7 VIII-VIII to schematic cross-sectional view；
Fig. 9 is the enlarged diagram of the part D in Fig. 6.
Specific embodiment
With reference to the accompanying drawings and examples, the application is described in further detail.It is emphasized that following implement
Example is merely to illustrate the application, but is not defined to scope of the present application.Likewise, following embodiment is only the portion of the application
Point embodiment and not all embodiments, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, shall fall in the protection scope of this application.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Please jointly refering to fig. 1 and Fig. 2, Fig. 1 be 10 embodiment of electronic equipment provided by the present application structural schematic diagram, Fig. 2
It is the decomposition texture schematic diagram of 10 partial structurtes of electronic equipment in Fig. 1, the electronic equipment 10 in the present embodiment can be any tool
The equipment of standby communication and store function, such as: tablet computer, mobile phone, electronic reader, remote controler, personal computer
(Personal Computer, PC), laptop, mobile unit, Web TV, wearable device etc. have network function
Smart machine, the electronic equipment 10 in the present embodiment includes center 20, circuit board 30 and loudspeaker 40.
Term " includes " in the application, it is intended that cover and non-exclusive include.Such as it contains above structure and does not have
It is defined in listed structure, but optionally further comprising the structure that do not list.
Center 20 is the frame structure of electronic equipment 10, in other embodiments, is also possible to the shell of electronic equipment 10,
For example the housing unit of front housing, rear shell or front housing and rear shell composition, center 20 are generally metal alloy compositions production, for example,
Steel plate, magnesium alloy.
It is jointly center 20 is upward in III-III in Fig. 2 schematic cross-sectional view refering to Fig. 2 and Fig. 3, Fig. 3, wherein center
20 are equipped with the first atrium 201, and optionally, center 20 includes bottom wall 21 and the first side wall 22, which is set to
On bottom wall 21.
Optionally, the first side wall 22 includes the first side wall portion 221, and the first side wall portion 221 is connect with bottom wall 21 and direction the
The opening direction of one atrium 201, namely A is to extension as shown in Figure 2, to form the first accommodating space 202 with bottom wall 21,
First accommodating space 202 is connected to the first atrium 201.
Wherein, the first side wall portion 221 is equipped with the first sound outlet hole 203 being connected to the first accommodating space 202.
Optionally, the quantity of the first sound outlet hole 203 is multiple.
In the description of the present application, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise clearly having
The restriction of body.
Optionally, the first side wall further includes second side wall portion 222, and second side wall portion 222 connect with bottom wall 21 and towards back
The direction of opening direction from the first atrium 201, namely B is held to extension with forming second with bottom wall 21 as shown in Figure 2
204 between emptying, which is used to accommodate the display screen component of electronic equipment 10.
Term " first ", " second " in the application are used for description purposes only, and are not understood to indicate or imply opposite
Importance or the quantity for implicitly indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be bright
Show or implicitly include at least one this feature.
It is jointly that circuit board 30 is cutd open what III-III was assembled upwards with center 20 in Fig. 2 refering to Fig. 2, Fig. 3 and Fig. 4, Fig. 4
Depending on schematic diagram, wherein circuit board 30 be set to center 20 towards the first atrium 201 opening direction side, in this implementation
In example namely circuit board 30 be set to bottom wall 21 towards the first atrium 201 opening direction side, and circuit board 30 is located at
In first accommodating space 202.
Wherein, circuit board 30 is equipped with the aperture 301 being connected to the first atrium 201.
Optionally, the first above-mentioned sound outlet hole 203 is at least partially disposed at circuit board on the direction perpendicular to circuit board 30
30 close to the side of bottom wall 21, namely as shown in Figure 3, the first sound outlet hole 203 on the direction perpendicular to circuit board 30 at least
Part is located at the lower section of circuit board 30.
Optionally, circuit board 30 is equipped with notch 302 close to the side in the first side wall portion 221.
It is jointly that center 20 in Fig. 2, circuit board 30 and loudspeaker 40 are upward in III-III refering to Fig. 2, Fig. 4 and Fig. 5, Fig. 5
The diagrammatic cross-section of assembly, loudspeaker 40 are set in the first accommodating space 202, and are arranged in circuit board 30 by aperture 301
And it is covered on the first atrium 201, so that sound chamber 401 after the formation of the first atrium 201, in the sound out that ensure that loudspeaker 40
Under the premise of effect, the length of circuit board 30 is increased, so that the width of circuit board 30 can be reduced, to increase in circuit board
The space of the battery for accommodating electronic equipment of 30 width direction setting, and then increase the capacity of the battery of electronic equipment,
Improve the cruising ability of electronic equipment.
It should be understood that circuit board 30 is equipped with multiple components, in order to guarantee the rational deployment of multiple components, circuit
Plate 30 needs enough areas, and in the present embodiment, loudspeaker 40 can be arranged in circuit board 30 by the aperture 301 of circuit board 30,
In compared with the prior art, the arranged side by side namely circuit board 30 of circuit board 30 and loudspeaker 40 is only arranged at loudspeaker 40
Side, circuit board 30 increase the part for being set to the opposite other side of loudspeaker 40, so that the length of circuit board 30 is increased,
So that the width of circuit board 30 can be reduced in the case where same area, it is above-mentioned to achieve the effect that.
It should be understood that above-mentioned length and width is merely to illustrate that the size of circuit board 30 in different directions,
And the battery of the electronic equipment positional relationship with circuit board 30 in the corresponding direction.
Optionally, first seal 50 is additionally provided between circuit board 30 and center 20, first seal 50 is located on first
Atrium 201, to seal above-mentioned rear sound chamber.
Optionally, first seal 50 is the sealing foam for including but is not limited to or sealed silicone etc..
It is the diagrammatic cross-section of Standard in Fig. 2 cover plate 60 and Fig. 5, Fig. 7 refering to Fig. 6, Fig. 7 and Fig. 8, Fig. 6 jointly
The structural schematic diagram upward in C of Fig. 2 cover plate 60, Fig. 8 be in Fig. 7 VIII-VIII to schematic cross-sectional view, in the present embodiment
Electronic equipment 10 further include cover board 60, cover board 60 is equipped with the second atrium 601, and be covered on loudspeaker 40 goes out sound side, with
So that the second atrium 601 forms preceding sound chamber 602.
Optionally, cover board 60 is covered on loudspeaker including roof 61 and the second sidewall 62 connecting with roof 61, roof 61
40 side for going out sound side, the second above-mentioned atrium 601 are set to the side that goes out sound side of the roof 61 close to loudspeaker.
Optionally, cover board 60 close to loudspeaker 40 go out sound side side be equipped with enclosure member 63, the enclosure member 63 with
The second above-mentioned atrium 601 is collectively formed in cover board 60, and in the present embodiment namely roof 61 is close to the sound side out of loudspeaker 40
Side be equipped with enclosure member 63, the second above-mentioned atrium 601 is collectively formed in the enclosure member 63 and roof 61.
Optionally, enclosure member 63 is equipped with step mechanisms 631, the step structure 631 close to the side of the second atrium 601
It is equipped with loudspeaker 40, so that cover board 60 is arranged close to the side for going out sound side of loudspeaker 40 and the interval of loudspeaker 40,
In the present embodiment namely roof 61 is arranged with the interval of loudspeaker 40, and then forms above-mentioned preceding sound chamber 602.
Further, above-mentioned second sidewall 62 is equipped with and is respectively communicated with the second of preceding sound chamber 602 and the first sound outlet hole 203
Sound outlet hole 603, so that the sound that loudspeaker 40 issues passes sequentially through preceding sound chamber 602, the second sound outlet hole 603 and the first sound outlet hole
203 outflows.
Optionally, second sidewall 62 is arranged in circuit board 30 by the notch 302 of circuit board 30, so that the second sound outlet hole
603 projection close to one end of the first sound outlet hole 203 in the first side wall portion 221 is at least partly located at the first sound outlet hole 203
Circuit board 30 partially overlaps close to the side of bottom wall 21, increases the second sound outlet hole 603 and goes out sound with first on sound direction out
The overlapping area in hole 203 improves the audio fruit out of the second sound outlet hole 603 and the first sound outlet hole 203, and second sidewall 62 passes through electricity
The notch 302 of road plate 30 is arranged in the set-up mode of circuit board 30, additionally it is possible to reduce the thickness of electronic equipment 10.
Optionally, second seal 70 is additionally provided between cover board 60 and circuit board 30, which is located on out
Hole 301, to seal preceding sound chamber 602.
Optionally, second seal 70 can be sealing foam, sealed silicone including but not limited to etc..
It is the enlarged diagram of the part D in Fig. 6 refering to Fig. 2 and Fig. 9, Fig. 9 jointly, the electronic equipment 10 in the present embodiment is also
Including flexible circuit board 80, which is electrically connected with circuit board 30 and loudspeaker 40 respectively, for 40 work of loudspeaker
Power supply when making.
Optionally, flexible circuit board 80 is set to side namely flexible circuit of the loudspeaker 40 close to the first atrium 201
Plate 80 is set to loudspeaker 40 by the side of nearby sound chamber 401.
Fig. 2, Fig. 3 and Fig. 4 are further regarded to, the electronic equipment 10 in the present embodiment further includes sound absorption part 90, and absorb sound part 90
It is set in rear sound chamber 401, to improve the bass effect of loudspeaker 40 when loudspeaker 40 works.
Optionally, stainless steel material can be used in sound absorption part 90 or plastic cement material is prepared, naturally it is also possible to use other
Sound-absorbing material is prepared.
Optionally, sound absorption part 90 is adhered to center 20, in the present embodiment, namely is adhered to bottom wall 21, the mode of bonding
Dispensing including but not limited to and the form of double-sided adhesive can be used.
Optionally, sound absorption part 90 is equipped with through-hole 901, and through-hole 901 is through sound absorption part 90, in the bass effect for improving loudspeaker 40
While fruit, not by 90 the space occupied of sound absorption part in sound chamber 401 after being increased by multiple through-holes 901, to improve loudspeaking
The audio of device 40.
Optionally, the quantity of the through-hole 231 can be one or more.
Electronic equipment provided by the embodiments of the present application includes center, circuit board and loudspeaker, and center is equipped with the first atrium,
Circuit board is set to the side of the opening direction of center the first atrium of direction, and circuit board is equipped with and opens with what the first atrium was connected to
Hole, loudspeaker is arranged in circuit board by aperture and is covered on the first atrium, so that the first atrium forms rear sound chamber,
Under the premise of the audio fruit out that ensure that loudspeaker, the length of circuit board is increased, so that the width of circuit board can be reduced, from
And increase in the space of the battery for accommodating electronic equipment of the width direction setting of circuit board, and then increase electronic equipment
The capacity of battery improves the cruising ability of electronic equipment.
The foregoing is merely the section Examples of the application, are not intended to limit the protection scope of the application, all utilizations
Equivalent device made by present specification and accompanying drawing content or equivalent process transformation are applied directly or indirectly in other correlations
Technical field, similarly include in the scope of patent protection of the application.
Claims (14)
1. a kind of electronic equipment, which is characterized in that the electronic equipment includes center, circuit board and loudspeaker, and the center is set
Have the first atrium, the circuit board be set to the center towards first atrium opening direction side, it is described
Circuit board is equipped with the aperture that is connected to first atrium, the loudspeaker by the aperture be arranged in the circuit board and
It is covered on first atrium, so that first atrium forms rear sound chamber.
2. electronic equipment according to claim 1, which is characterized in that the electronic equipment further includes sound absorption part, the suction
It is intracavitary that sound part is set to the rear sound.
3. electronic equipment according to claim 2, which is characterized in that the sound absorption part is equipped with through the logical of the sound absorption part
Hole.
4. electronic equipment according to claim 1, which is characterized in that be equipped with first between the circuit board and the center
Sealing element, the first seal are located on first atrium.
5. electronic equipment according to claim 1, which is characterized in that the electronic equipment further includes cover board, the cover board
Equipped with the second atrium, the cover plate lid is set to the sound side out of the loudspeaker, so that second atrium forms preceding sound
Chamber.
6. electronic equipment according to claim 5, which is characterized in that be equipped with second between the cover board and the circuit board
Sealing element, the second seal are located on the aperture.
7. electronic equipment according to claim 5, which is characterized in that the cover board is close to the sound side out of the loudspeaker
Side is equipped with enclosure member, and the enclosure member and the cover board are fitted to each other to form second atrium.
8. electronic equipment according to claim 7, which is characterized in that the enclosure member is close to second atrium
Side is equipped with step structure, and the step structure is equipped with the loudspeaker, so that the cover board is close to the loudspeaking
The side for going out sound side of device and the loudspeaker interval are arranged, and then form the preceding sound chamber.
9. electronic equipment according to claim 5, which is characterized in that the center includes bottom wall and the first side wall, described
First atrium is set on the bottom wall, and the first side wall includes the first side wall portion, the first side wall portion and the bottom
Wall connects and extends towards the opening direction of first atrium, to be connected to bottom wall formation with first atrium
The first accommodating space, the circuit board and the loudspeaker are set in first accommodating space.
10. electronic equipment according to claim 9, which is characterized in that the first side wall portion is equipped with to be held with described first
The first sound outlet hole being connected between emptying, the cover board include roof and second sidewall, and the roof is covered on the loudspeaker
Sound side out, second atrium are set to the side that goes out sound side of the roof close to the loudspeaker, the second sidewall
It is connect with the roof and is equipped with the second sound outlet hole for being respectively communicated with the preceding sound chamber and first sound outlet hole.
11. electronic equipment according to claim 9, which is characterized in that the first side wall further includes second side wall portion, institute
State second side wall portion connect and face away from the bottom wall first atrium opening direction direction extend, with institute
It states bottom wall and forms the second accommodating space, second accommodating space is used to accommodate the display screen component of the electronic equipment.
12. electronic equipment according to claim 10, which is characterized in that first sound outlet hole is perpendicular to the circuit
The circuit board is at least partially disposed on the direction of plate close to the side of the bottom wall, the circuit board is close to the first side wall
The side in portion is equipped with notch, and the second sidewall is arranged in the circuit board by the notch, so that described second goes out sound
Hole is close to projection of the one end of first sound outlet hole in the first side wall portion at least partly with described at least partly first
Sound outlet hole is overlapped.
13. electronic equipment according to claim 1, which is characterized in that the electronic equipment further includes flexible circuit board, institute
It states flexible circuit board to be electrically connected with the circuit board and loudspeaker respectively, for the power speakers.
14. electronic equipment according to claim 13, which is characterized in that the flexible circuit board is set to the loudspeaker
Close to the side of first atrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821995748.XU CN209046878U (en) | 2018-11-29 | 2018-11-29 | A kind of electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821995748.XU CN209046878U (en) | 2018-11-29 | 2018-11-29 | A kind of electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209046878U true CN209046878U (en) | 2019-06-28 |
Family
ID=67043840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821995748.XU Active CN209046878U (en) | 2018-11-29 | 2018-11-29 | A kind of electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209046878U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110677792A (en) * | 2019-10-25 | 2020-01-10 | Oppo广东移动通信有限公司 | Electronic device and control method of electronic device |
| CN112165542A (en) * | 2020-09-07 | 2021-01-01 | Oppo广东移动通信有限公司 | Sound outputting assembly and electronic equipment thereof |
| CN112261187A (en) * | 2020-10-23 | 2021-01-22 | 维沃移动通信有限公司 | Electronic device |
| CN112398990A (en) * | 2020-11-04 | 2021-02-23 | 惠州Tcl移动通信有限公司 | Sound production device and mobile phone thereof |
| CN112788166A (en) * | 2021-01-06 | 2021-05-11 | Oppo广东移动通信有限公司 | Electronic device |
| CN114257672A (en) * | 2020-09-22 | 2022-03-29 | 华为终端有限公司 | Sound production device and electronic equipment |
| WO2022213918A1 (en) * | 2021-04-06 | 2022-10-13 | 维沃移动通信有限公司 | Electronic device |
| CN117596526A (en) * | 2022-08-16 | 2024-02-23 | 荣耀终端有限公司 | Sound production device and electronic equipment |
-
2018
- 2018-11-29 CN CN201821995748.XU patent/CN209046878U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110677792A (en) * | 2019-10-25 | 2020-01-10 | Oppo广东移动通信有限公司 | Electronic device and control method of electronic device |
| CN110677792B (en) * | 2019-10-25 | 2021-09-17 | Oppo广东移动通信有限公司 | Electronic device and control method of electronic device |
| CN112165542A (en) * | 2020-09-07 | 2021-01-01 | Oppo广东移动通信有限公司 | Sound outputting assembly and electronic equipment thereof |
| CN114257672A (en) * | 2020-09-22 | 2022-03-29 | 华为终端有限公司 | Sound production device and electronic equipment |
| CN114257672B (en) * | 2020-09-22 | 2023-07-14 | 华为终端有限公司 | Sound production device and electronic equipment |
| CN112261187A (en) * | 2020-10-23 | 2021-01-22 | 维沃移动通信有限公司 | Electronic device |
| CN112398990A (en) * | 2020-11-04 | 2021-02-23 | 惠州Tcl移动通信有限公司 | Sound production device and mobile phone thereof |
| CN112398990B (en) * | 2020-11-04 | 2023-04-07 | 惠州Tcl移动通信有限公司 | Sound production device and mobile phone thereof |
| CN112788166A (en) * | 2021-01-06 | 2021-05-11 | Oppo广东移动通信有限公司 | Electronic device |
| CN112788166B (en) * | 2021-01-06 | 2022-12-27 | Oppo广东移动通信有限公司 | Electronic device |
| WO2022213918A1 (en) * | 2021-04-06 | 2022-10-13 | 维沃移动通信有限公司 | Electronic device |
| CN117596526A (en) * | 2022-08-16 | 2024-02-23 | 荣耀终端有限公司 | Sound production device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209046878U (en) | A kind of electronic equipment | |
| CN107734092A (en) | Mobile terminal | |
| CN109451120A (en) | A kind of mobile terminal device | |
| CN205068235U (en) | Mobile terminal | |
| JP7478837B2 (en) | Electronics | |
| CN112291394A (en) | Electronic device | |
| CN107613069A (en) | Housing unit, side switch module and mobile terminal | |
| CN109274790A (en) | A kind of mobile terminal | |
| CN108430017A (en) | A kind of sound-producing device and electronic equipment | |
| CN107071667A (en) | loudspeaker assembly and mobile terminal | |
| CN107426365B (en) | Sound cavity structure and mobile phone with same | |
| CN106374961B (en) | Mobile terminal | |
| CN203193823U (en) | Acoustics module | |
| CN107340705A (en) | A kind of side goes out the waterproof intelligent watch of sound | |
| CN214281613U (en) | Electronic device | |
| CN207543153U (en) | Mobile terminal | |
| CN212434116U (en) | Frame assembly of display device and display device thereof | |
| CN205847345U (en) | A kind of mobile phone with detachable extension back-cover | |
| CN107635032A (en) | Housing and electronic equipment | |
| CN207339957U (en) | A kind of electronic equipment | |
| CN207218778U (en) | A kind of mobile phone of embedded with bluetooth earphone | |
| CN206923027U (en) | Loudspeaker assembly and mobile terminal | |
| CN206542463U (en) | Mobile terminal | |
| CN208905147U (en) | A kind of center component and electronic equipment | |
| CN215300839U (en) | Speaker and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |