CN205452527U - Antenna - Google Patents
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- CN205452527U CN205452527U CN201521125850.0U CN201521125850U CN205452527U CN 205452527 U CN205452527 U CN 205452527U CN 201521125850 U CN201521125850 U CN 201521125850U CN 205452527 U CN205452527 U CN 205452527U
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- edge frame
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Abstract
The utility model discloses an antenna, it is including arrange in the metal frame in the mobile communication device outside in succession, be arranged in mobile communication device and with the ground connection portion that metal frame part interval set up, one side and connection in mobile communication device the first feed portion of metal frame and ground connection portion to and the first control portion of the first feed portion of control, ground connection portion has the connection the first connecting portion and the second connecting portion of the different positions of metal frame, metal frame, first feed portion, ground connection portion and first connecting portion enclose into an antenna, metal frame, first feed portion, ground connection portion and second connecting portion enclose into the 2nd antenna, antenna still includes a switch circuit of the 3rd antenna, the 3rd antenna of connection and ground connection portion and controls a switch circuit's second control part, the 3rd antenna lies in the metal frame with between the ground connection portion, thereby a second control part control switch circuit controls the 3rd antenna's operating condition.
Description
[technical field]
This utility model relates to a kind of antenna, especially a kind of antenna for mobile phone.
[background technology]
The mobile phone good hand touch of metal edge frame, meets user to aesthetic requirement, is the technology selected by flagship product of a lot of brand manufacturers, and metal edge frame can be as a part for antenna simultaneously, and therefore increasing mobile phone frame is used as a part for antenna.But owing to being limited by antenna technology, metal edge frame mobile phone is usually provided with breakpoint, breakpoint then have impact on the attractive in appearance of mobile phone, seldom sees the mobile phone of all-metal frame.
Chinese patent is announced No. CN201420551405 and is disclosed a kind of closed loop (seamless) metal edge frame 3G antenna, it is possible to achieve working frequency range be 824MHz～960MHz and 1710MHz～2170MHz.
Refer to shown in Fig. 1, this closed loop metal edge frame 3G antenna, it is adaptable to there is the mobile terminal of metal edge frame structure, including metal edge frame, pcb board and antenna cabling.Metal edge frame is made up of first frame the 102, second frame the 103, the 3rd frame the 104, the 4th frame 105.Pcb board includes that metallic region 100 and empty regions 101, the left and right two ends of empty regions 101 extend to the both sides of metallic region and be respectively provided with so that the first earth point 111 and the second earth point 112 of pcb board with metal edge frame electrical connection.
Antenna cabling is arranged in the empty regions 101 of pcb board, and antenna cabling includes feed section, antenna slot part and spurious portion.Wherein, antenna slot part includes the first groove the 301, second groove 302 and the 3rd groove 303, first groove 301 and the second groove 302 form a grooved radiant loop, the first time mould of the low-frequency range of composition antenna cabling, realize 824-960MHz frequency range, additionally, the second time mould of this antenna slot is for producing the first high frequency, it is achieved the frequency range of 1710-1990MHz.But the closed loop metal edge frame antenna of the prior art is 3G antenna, it is impossible to realizing the high frequency of the high frequency of 4G technology, i.e. more than 2300MHz, range is extremely limited.
Therefore, in order to overcome drawbacks described above, it is necessary to provide the antenna of a kind of improvement.
[utility model content]
The purpose of this utility model is to provide a kind of antenna.
nullTo achieve these goals，This utility model adopts the following technical scheme that a kind of antenna，It includes the metal edge frame being arranged in continuously outside mobile communication equipment，Be positioned in mobile communication equipment and with the described spaced grounding parts of metal edge frame part，Side in a mobile communication device and connect the first current feed department of described metal edge frame and grounding parts，And control the first control portion of the first current feed department，Described grounding parts has the first connecting portion and the second connecting portion connecting described metal edge frame diverse location，Described metal edge frame、First current feed department、Grounding parts、First antenna is surrounded with the first connecting portion，Described metal edge frame、First current feed department、Grounding parts and the second connecting portion surround the second antenna，Described antenna also includes third antenna、Connect third antenna and the first on-off circuit of grounding parts and control the second control portion of the first on-off circuit，Described third antenna is between described metal edge frame and described grounding parts，Described second control portion controls the first on-off circuit thus controls the duty of third antenna.
Preferably, described first antenna also includes the first short circuit portion connecting described metal edge frame and grounding parts, described second antenna also includes the second short circuit portion connecting described metal edge frame and grounding parts, by first antenna described in the position adjustments in the described first short circuit portion of regulation and the second short circuit portion and the bandwidth of the second antenna and frequency.
Preferably, described first antenna is L-shaped, and described second antenna is L-shaped, and the total length of described second antenna is more than described first antenna.
Preferably, described antenna also includes that the second current feed department connecting described third antenna and metal edge frame, described second current feed department one end connect described metal edge frame, and another side connects described third antenna.
Preferably, described third antenna is positioned at described second antenna area, or the part being positioned at the second antenna area is more longer than the partial-length being positioned at first antenna region.
Preferably, described third antenna forms T font with described second current feed department, and described first on-off circuit connects one end of described third antenna.
Preferably, described third antenna is horizontally extending, described second current feed department extends along the vertical direction being perpendicular to described third antenna, described third antenna is divided into the first shorter support arm and the second longer support arm by described second current feed department, and it is opposing in one end of described second support arm that described first on-off circuit is connected to described first support arm.
Preferably, described first antenna includes horizontally extending first paragraph and the second segment vertically extended, described second segment is connected with described first connecting portion, and described third antenna is parallel with the first paragraph of described first antenna, between described first paragraph and described grounding parts.
Preferably, described second antenna includes the first horizontally extending side arm and the second side arm vertically extended, and described second side arm is connected with described second connecting portion.
Preferably, described antenna also includes the 3rd current feed department, described first connecting portion, the 3rd current feed department, grounding parts and metal edge frame in a mobile communication device, the opposing opposite side in described first antenna of described grounding parts surround the 4th antenna.
Preferably, described 4th antenna is L-shaped.
Preferably, described antenna also includes the 4th current feed department and controls the 3rd control portion of described 4th current feed department, described 4th current feed department, described second connecting portion, grounding parts and metal edge frame in a mobile communication device, the opposing opposite side in described second antenna of described grounding parts surround the 5th antenna, the 3rd control portion control the 4th current feed department duty.
Preferably, described 5th antenna is L-shaped.
Preferably, described antenna also includes that second switch circuit, described second switch circuit are positioned in described 5th antenna.
Preferably, described antenna also includes at least one the 3rd on-off circuit, described 3rd on-off circuit is between described 3rd current feed department and the 4th current feed department, described 3rd current feed department, grounding parts, metal edge frame and the 3rd on-off circuit surround the 6th antenna, and described 4th current feed department, grounding parts, metal edge frame and the 3rd on-off circuit surround the 7th antenna.
Preferably, the quantity of described 3rd on-off circuit is two.
Compared to prior art, this utility model antenna has the advantage that the antenna as mobile communication equipment of the metal edge frame by closing, and this antenna has simple in construction, excellent in efficiency simultaneously, and frequency band covers wide advantage.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of prior art antenna.
Fig. 2 is the schematic diagram of the antenna of this utility model preferred embodiment.
Fig. 3 is the antenna of this utility model preferred embodiment schematic diagram under another duty.
Fig. 4 is the schematic diagram of the antenna of another preferred embodiment of this utility model.
[detailed description of the invention]
nullA kind of antenna of preferred embodiment of the present utility model，It includes the metal edge frame being arranged in continuously outside mobile communication equipment，Be positioned in mobile communication equipment and with the described spaced grounding parts of metal edge frame part，Side in a mobile communication device and connect the first current feed department of described metal edge frame and grounding parts，And control the first control portion of the first current feed department，Described grounding parts has the first connecting portion and the second connecting portion connecting described metal edge frame diverse location，Described metal edge frame、First current feed department、Grounding parts、First antenna is surrounded with the first connecting portion，Described metal edge frame、First current feed department、Grounding parts and the second connecting portion surround the second antenna，Described antenna also includes third antenna、Connect third antenna and the first on-off circuit of grounding parts and control the second control portion of the first on-off circuit，Described third antenna is between described metal edge frame and described grounding parts，Described second control portion controls the first on-off circuit thus controls the duty of third antenna.By length and width first antenna is set, the second antenna can be operated in B12, mid frequency in the frequency range of 1800MHz, 1900MHz, 210MHz, third antenna is operable with 850MHz, 900MHz, B38, B40, B41 frequency range.By the first control portion, the control in the second control portion, switch first antenna, the second antenna and the duty of third antenna as required, it is possible to achieve the covering of 699-2690MHz full frequency band.This utility model antenna utilizes a part for the metal edge frame antenna the most of mobile communication equipment, saves space, easily manufactured.On the other hand third antenna is set between metal edge frame and grounding parts, it is not required to additionally increase the space of mobile communication equipment, but the frequency of more than the 2300HZ that metal edge frame possibly cannot realize is supplemented by third antenna, make this utility model antenna can cover mobile communication equipment work full frequency band (699HZ-2690HZ frequency), and functional.
Specifically, refer to shown in Fig. 2 and Fig. 3, a kind of antenna 1, including the metal edge frame 10 being arranged in mobile communication equipment (non-label) outside continuously, be positioned in mobile communication equipment and with the metal edge frame 10 spaced grounding parts of part 12, connect metal edge frame 10 and the first current feed department 17 of grounding parts 12 in mobile communication equipment side and control the first control portion T1 of the first current feed department 17.Sky space of lines 11 is formed between grounding parts 12 and metal edge frame 10.Grounding parts 12 has the first connecting portion 121 and the second connecting portion 122 connecting metal edge frame 10 diverse location.First connecting portion 121 and the second connecting portion 122 lay respectively at the left and right sides in mobile communication equipment in the horizontal direction, after being connected with metal edge frame 10, sky space of lines 11 is divided into upper and lower two parts and lays respectively at the both sides that grounding parts 12 is opposing.Metal edge frame the 10, first current feed department 17, grounding parts 12 and the first connecting portion 121 surround first antenna 501.Metal edge frame the 10, first current feed department 17, grounding parts 12 and the second connecting portion 122 surround the second antenna 502.Antenna 1 also includes third antenna 15, connects third antenna 15 and the first on-off circuit S1 of grounding parts 12 and control the second control portion T3 of the first on-off circuit S1.In the third antenna 15 sky space of lines 11 between metal edge frame 10 and grounding parts 12, the second control portion T3 controls the first on-off circuit S1 thus controls the duty of third antenna 15.In the present embodiment, first antenna 501 is L-shaped, and the second antenna 502 is L-shaped, and the total length of the second antenna 502 is more than described first antenna 501.
It is first antenna 501 metal edge frame 13 that metal edge frame 10 is positioned at the part of first antenna 501, and it is the second antenna 502 metal edge frame 14 that metal edge frame 10 is positioned at the part of the second antenna 502.First antenna 501 metal edge frame 13 is L-shaped, and the fluting 131 formed between it and grounding parts 12 is also L-shaped.Second antenna 502 metal edge frame 14 is L-shaped, and the fluting 141 formed between it and grounding parts 12 is also L-shaped.The total length of first antenna 501 metal edge frame 13 is less than the total length of the second antenna 502 metal edge frame 14.First antenna 501 metal edge frame 13 includes horizontally extending first paragraph 132 and the second segment 133 vertically extended, and second segment 133 is connected with the first connecting portion 121.Second antenna 502 metal edge frame 14 includes the first horizontally extending side arm 142 and the second side arm 143 vertically extended, and the second side arm 143 is connected with the second connecting portion 122.Third antenna 15 is parallel, between first paragraph 132 and grounding parts 12 with the first side arm 142 of the second antenna 502.
In the present embodiment, first paragraph 132 is vertical with second segment 133, and the first side arm 142 is vertical with the second side arm 143.In other embodiments, between first paragraph 132 and second segment 133, may not be vertical relation, but at an angle, may not be vertical relation between the first side arm 142 and the second side arm 143, but at an angle.
First antenna 501 also includes connecting metal edge frame 10 and the first short circuit portion 134 of grounding parts 12, and the second antenna 502 also includes connecting metal edge frame 10 and the second short circuit portion 144 of grounding parts 12.First short circuit portion 134 can adjust the position being connected with first antenna 501 metal frame 13, grounding parts 12 as required, and the second short circuit portion 144 can adjust the position being connected with the second antenna 502 metal frame 14, grounding parts 12 as required.By regulating the position adjustments first antenna 501 in the first short circuit portion 134 and the second short circuit portion 144 and the bandwidth of the second antenna 502 and frequency.Antenna 1 might not have the first short circuit portion 134 and/or the second short circuit portion 144, in other embodiments, it is also possible to a short circuit portion is selectively set or is not provided with short circuit portion.
In the present embodiment, antenna 1 also includes connecting third antenna 15 and the second current feed department 16 of metal edge frame 10, and second current feed department 16 one end connects metal edge frame 10, and another side connects third antenna 15.Third antenna 15 is positioned at the second antenna 502 region.
Third antenna 15 and the second current feed department 16 form T font, and the first on-off circuit S1 connects one end of third antenna 15.Third antenna 15 is horizontally extending, second current feed department 16 extends along the vertical direction being perpendicular to third antenna 15, third antenna 15 is divided into the first shorter support arm 151 and the second longer support arm 152 by the second current feed department 16, and it is opposing in one end of the second support arm 152 that the first on-off circuit S1 is connected to the first support arm 151.Refer to shown in Fig. 3, when the second control portion T3 controls the first on-off circuit S1 conducting, second current feed department the 16, first on-off circuit S1, metal edge frame the 10, first connecting portion 121 and grounding parts 12 form new first antenna 601.Second current feed department the 16, first on-off circuit S1, metal edge frame the 10, second connecting portion 122 and grounding parts 12 form the second new antenna 602.The frequency band of new first antenna 601, the second new antenna 602 and former first antenna the 501, second antenna 502 complements each other, antenna 1 mates the first suitable current feed department 17 or the second current feed department 16 as required, so that the band coverage of antenna 1 is wider, effect is more preferable.When the second control portion T3 controls the first on-off circuit S1 conducting, third antenna 15 works in 850MHz, 900MHz, B38, B40, B41 frequency range.First on-off circuit S1 can be grounded circuit, can be open circuit (disconnection) circuit, can be radio-frequency feed circuit, it is also possible to be combinations of the above.
When the second current feed department 16 is as current feed department, third antenna 15 is not fully located in former second antenna 502 region, but the second antenna 502 is split by the second current feed department 16, the first support arm 151 is positioned at first antenna 501 region, and the second support arm 152 is positioned at the second antenna 502 region.I.e. to be positioned at the part in the second antenna 502 region more longer than the partial-length being positioned at first antenna 501 region for third antenna 15.In other embodiments, it is also possible to be not provided with the second current feed department 16 as required.The antenna (non-label) of such as another preferred embodiment of this utility model shown in Fig. 4, does not the most have the second current feed department 16.Arranging of second current feed department 16 adjusts according to mobile communication equipment internal medium.
Antenna 1 also includes that the 3rd current feed department 18, the first connecting portion the 121, the 3rd current feed department 18, grounding parts 12 and metal edge frame 10 surround the 4th antenna 504 at the opposing opposite side in first antenna 501 of grounding parts 12.In the present embodiment, the 4th antenna 504 is L-shaped.
Antenna 1 also includes the 4th current feed department 19 and controls the 3rd control portion T2 of the 4th current feed department 19, the 4th current feed department the 19, second connecting portion 122, grounding parts 12 and metal edge frame 10 in a mobile communication device, the opposing opposite side in the second antenna 502 of grounding parts 12 surround the 5th antenna 505.In the present embodiment, the 5th antenna 505 is L-shaped.
Antenna 1 also includes that second switch circuit S2, second switch circuit S2 are positioned in the 5th antenna 505.By frequency and the bandwidth of position-adjustable the 5th antenna 505 of regulation second switch circuit S2.Other embodiments can not also include second switch circuit S2.
Antenna 1 also includes at least one the 3rd on-off circuit S3, and the 3rd on-off circuit S3 is between the 3rd current feed department 18 and the 4th current feed department 19.3rd current feed department 18, grounding parts 12, metal edge frame 10 and the 3rd on-off circuit S3 surround the 6th antenna 506, and the 4th current feed department 19, grounding parts 12, metal edge frame 10 and the 3rd on-off circuit S3 surround the 7th antenna 507.In the present embodiment, the quantity of the 3rd on-off circuit S3 is two, separately between the 3rd current feed department 18 and the 4th current feed department 19.In other embodiments, the quantity of the 3rd on-off circuit S3 can also be one.
First antenna the 501, second antenna 502, third antenna 15, as auxiliary antenna, are supplemented by the 4th antenna 504 and the 6th antenna 506, and the performance making antenna 1 is more stable.
During work, as shown in Table 1 below, adjust control circuit as required and select to connect different antennas.By the first on-off circuit S1, the different operating state of the first control portion T1, first antenna the 501, second antenna 502 and the third antenna 15 covering to full frequency band 699-2690MHz can be realized.By second switch circuit S2 and the different operating state of the 3rd on-off circuit S3, the support to B12,1800MHz, 1900MHz, 2100MHz, B38, B40, B41 frequency range can be realized.By controlling the 3rd control portion T2 and the duty of the 3rd on-off circuit S3, the covering to frequency range required under GPS, WiFi, Bluetooth agreement can be realized, so that antenna 1 can cover the full frequency band needed for mobile communication equipment.The work efficiency of different antennae when showing different current feed department work shown in table 2, as can be seen from Table 2, this utility model antenna 1 has good work efficiency at B12,850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, B38, B40, B41 frequency band, meets the needs of present mobile communication equipment.
Table 1
Table 2
In one or more embodiments, mobile communication equipment is mobile cellular communication equipment, as smart mobile phone, intelligent watch, panel computer etc. possess the equipment of radio communication function.
Should be noted that, embodiment of the present utility model has preferably implementation, and not this utility model is made any type of restriction, any one skilled in the art changes possibly also with the technology contents of the disclosure above or is modified to effective embodiment of equivalent, in every case without departing from the content of technical solutions of the utility model, the any amendment made above example according to technical spirit of the present utility model or equivalent variations and modification, all still fall within the range of technical solutions of the utility model.
Claims (16)
- null1. an antenna，It is characterized in that: it includes the metal edge frame being arranged in continuously outside mobile communication equipment，Be positioned in mobile communication equipment and with the described spaced grounding parts of metal edge frame part，Side in a mobile communication device and connect the first current feed department of described metal edge frame and grounding parts，And control the first control portion of the first current feed department，Described grounding parts has the first connecting portion and the second connecting portion connecting described metal edge frame diverse location，Described metal edge frame、First current feed department、Grounding parts、First antenna is surrounded with the first connecting portion，Described metal edge frame、First current feed department、Grounding parts and the second connecting portion surround the second antenna，Described antenna also includes third antenna、Connect third antenna and the first on-off circuit of grounding parts and control the second control portion of the first on-off circuit，Described third antenna is between described metal edge frame and described grounding parts，Described second control portion controls the first on-off circuit thus controls the duty of third antenna.
- 2. antenna as claimed in claim 1, it is characterized in that: described first antenna also includes connecting the first short circuit portion of described metal edge frame and grounding parts, described second antenna also includes the second short circuit portion connecting described metal edge frame and grounding parts, by first antenna described in the position adjustments in the described first short circuit portion of regulation and the second short circuit portion and the bandwidth of the second antenna and frequency.
- 3. antenna as claimed in claim 1, it is characterised in that: described first antenna is L-shaped, and described second antenna is L-shaped, and the total length of described second antenna is more than described first antenna.
- 4. antenna as claimed in claim 1, it is characterised in that: described antenna also includes that the second current feed department connecting described third antenna and metal edge frame, described second current feed department one end connect described metal edge frame, and another side connects described third antenna.
- 5. antenna as claimed in claim 4, it is characterised in that: described third antenna is positioned at described second antenna area, or the part being positioned at the second antenna area is more longer than the partial-length being positioned at first antenna region.
- 6. antenna as claimed in claim 5, it is characterised in that: described third antenna forms T font with described second current feed department, and described first on-off circuit connects one end of described third antenna.
- 7. antenna as claimed in claim 6, it is characterized in that: described third antenna is horizontally extending, described second current feed department extends along the vertical direction being perpendicular to described third antenna, described third antenna is divided into the first shorter support arm and the second longer support arm by described second current feed department, and it is opposing in one end of described second support arm that described first on-off circuit is connected to described first support arm.
- 8. antenna as claimed in claim 5, it is characterized in that: described first antenna includes horizontally extending first paragraph and the second segment vertically extended, described second segment is connected with described first connecting portion, described third antenna is parallel with the first paragraph of described first antenna, between described first paragraph and described grounding parts.
- 9. antenna as claimed in claim 8, it is characterised in that: described second antenna includes the first horizontally extending side arm and the second side arm vertically extended, and described second side arm is connected with described second connecting portion.
- 10. antenna as claimed in claim 1, it is characterized in that: described antenna also includes the 3rd current feed department, described first connecting portion, the 3rd current feed department, grounding parts and metal edge frame in a mobile communication device, the opposing opposite side in described first antenna of described grounding parts surround the 4th antenna.
- 11. antennas as claimed in claim 10, it is characterised in that: described 4th antenna is L-shaped.
- 12. antennas as claimed in claim 11, it is characterized in that: described antenna also includes the 4th current feed department and controls the 3rd control portion of described 4th current feed department, described 4th current feed department, described second connecting portion, grounding parts and metal edge frame in a mobile communication device, the opposing opposite side in described second antenna of described grounding parts surround the 5th antenna, the 3rd control portion control the 4th current feed department duty.
- 13. antennas as claimed in claim 12, it is characterised in that: described 5th antenna is L-shaped.
- 14. antennas as claimed in claim 13, it is characterised in that: described antenna also includes that second switch circuit, described second switch circuit are positioned in described 5th antenna.
- 15. antennas as claimed in claim 12, it is characterized in that: described antenna also includes at least one the 3rd on-off circuit, described 3rd on-off circuit is between described 3rd current feed department and the 4th current feed department, described 3rd current feed department, grounding parts, metal edge frame and the 3rd on-off circuit surround the 6th antenna, and described 4th current feed department, grounding parts, metal edge frame and the 3rd on-off circuit surround the 7th antenna.
- 16. antennas as claimed in claim 15, it is characterised in that: the quantity of described 3rd on-off circuit is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521125850.0U CN205452527U (en) | 2015-12-29 | 2015-12-29 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521125850.0U CN205452527U (en) | 2015-12-29 | 2015-12-29 | Antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205452527U true CN205452527U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521125850.0U Active CN205452527U (en) | 2015-12-29 | 2015-12-29 | Antenna |
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| CN (1) | CN205452527U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514575A (en) * | 2015-12-29 | 2016-04-20 | 北京锤子数码科技有限公司 | Antenna |
| CN108288761A (en) * | 2017-10-27 | 2018-07-17 | 珠海市魅族科技有限公司 | The control method of antenna assembly, terminal device and antenna assembly |
-
2015
- 2015-12-29 CN CN201521125850.0U patent/CN205452527U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514575A (en) * | 2015-12-29 | 2016-04-20 | 北京锤子数码科技有限公司 | Antenna |
| CN108288761A (en) * | 2017-10-27 | 2018-07-17 | 珠海市魅族科技有限公司 | The control method of antenna assembly, terminal device and antenna assembly |
| CN108288761B (en) * | 2017-10-27 | 2024-04-26 | 珠海市魅族科技有限公司 | Antenna device, terminal device, and control method of antenna device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190117 Address after: 100041 B-0035, 2 floor, 3 building, 30 Shixing street, Shijingshan District, Beijing. Patentee after: BEIJING ZIJIE TIAODONG NETWORK TECHNOLOGY CO., LTD. Address before: Room 309 and 310, Building 3, 33 D, No. 99, Kechuang 14th Street, Beijing Economic and Technological Development Zone, 100176 Patentee before: Beijing hammer numeral science and technology company limited |
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| TR01 | Transfer of patent right |