CN220122140U - Battery connector and electronic equipment - Google Patents

Battery connector and electronic equipment Download PDF

Info

Publication number
CN220122140U
CN220122140U CN202321571491.6U CN202321571491U CN220122140U CN 220122140 U CN220122140 U CN 220122140U CN 202321571491 U CN202321571491 U CN 202321571491U CN 220122140 U CN220122140 U CN 220122140U
Authority
CN
China
Prior art keywords
connector
battery
circuit board
housing
spring piece
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
Application number
CN202321571491.6U
Other languages
Chinese (zh)
Inventor
杨万群
周辉虎
周烽
高裕文
顾凯
吴永锋
王振茂
刘远
许昌军
张鑫炜
陈普双
代钊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Lianbao Information Technology Co Ltd
Original Assignee
Hefei Lianbao Information Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hefei Lianbao Information Technology Co Ltd filed Critical Hefei Lianbao Information Technology Co Ltd
Priority to CN202321571491.6U priority Critical patent/CN220122140U/en
Application granted granted Critical
Publication of CN220122140U publication Critical patent/CN220122140U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Battery Mounting, Suspending (AREA)

Abstract

The embodiment of the utility model provides a battery connector, which comprises a connector shell, an anode shrapnel and a cathode shrapnel, wherein the connector shell is arranged at a corresponding installation position on a circuit board; the connector shell protrudes out of the upper surface and the lower surface of the circuit board respectively, and an accommodating cavity for adapting the battery is formed in the connector shell; the positive pole shell fragment and the negative pole shell fragment are respectively connected with the electric appliance of circuit board electricity, in the state that the battery holds in holding the chamber, with the positive pole face and the negative pole face butt of battery in order to form the power supply structure, therefore the battery connector of the utility model makes between battery and the circuit board need not to utilize complicated electric wire to connect, avoids the danger of line ball, is favorable to reducing the thinning of whole electronic equipment.

Description

Battery connector and electronic equipment
Technical Field
The utility model belongs to the technical field of electronic equipment, and particularly relates to a battery connector and electronic equipment.
Background
In order to supply power to a CMOS (Complementary Metal-Oxide-Semiconductor) in an electronic device such as a notebook computer, a pad, etc., a small battery is required to be mounted on a circuit board to supply power to the circuit board, so that internal clock time, CMOS settings, BIOS settings, etc. are conveniently saved. The small battery can enable the circuit board to work continuously without any external power supply, and is prepared for the next starting up and the internal clock in advance. This is also the reason that when all external power supply of the computer is cut off, the time on the computer will not be disordered after the next computer is started.
In the existing electronic devices, the wires are typically welded to the positive and negative electrodes of a small battery by hand, and the battery is wrapped and then connected to the male wire connector before shipment. This approach has the following drawbacks: the preparation process is multiple, and the unit price is high; the winding space is long, the adhesion is troublesome, and the danger of line pressing is easy to cause; the later maintenance is troublesome, and special small batteries are required to be purchased; after the small battery is attached to the circuit board, the thickness of the whole small battery is about 4.2mm; when the circuit board is tested, the small battery needs to be repeatedly plugged and unplugged, and the process efficiency is affected.
In other electronic devices, a plastic mounting seat is arranged on a circuit board, and a small battery is mounted in the plastic mounting seat, but a larger connector is required to be electrically connected to realize power supply to the circuit board. In this way, the height of the plastic mounting seat on the circuit board is about 4.2mm, which is unfavorable for the thickness reduction of the whole machine.
Disclosure of Invention
In view of the foregoing problems of the prior art, an object of an embodiment of the present utility model is to provide a battery connector and an electronic device, which can solve the problem that a complicated wire is required for connecting the battery connector to a circuit board, and the problem that the height of the battery connector protruding from the upper surface of the circuit board is large.
The first scheme adopted by the embodiment of the utility model is that the battery connector comprises a connector shell, an anode spring piece and a cathode spring piece, wherein the connector shell is arranged at a corresponding installation position on a circuit board; the connector shell protrudes out of the upper surface and the lower surface of the circuit board respectively, and an accommodating cavity for adapting the battery is formed in the connector shell; the positive pole shell fragment and negative pole shell fragment are connected with the electrical equipment electricity of circuit board respectively, hold the state in holding the chamber in the battery, with the positive pole face and the negative pole face butt of battery in order to form the power supply structure.
In some embodiments, the connector housing includes a connector outer housing and a connector inner housing, the connector outer housing is coated on an outer surface of the connector inner housing, the connector outer housing is made of a metal conductive material, and the connector inner housing is made of a plastic insulating material.
In some embodiments, the connector housing is provided with a first conductive contact hole, the positive electrode spring plate includes a first spring plate and a second spring plate which are respectively connected with the connector housing, the first spring plate is contacted with and conducted with the positive electrode surface of the battery through the first conductive contact hole, and the second spring plate is electrically connected with the electric device of the circuit board.
In some embodiments, the connector housing is provided with a second conductive contact hole, the connector inner housing corresponding to the side wall of the second conductive contact hole is provided with a clamping groove, the negative pole shrapnel is connected with the clamping groove, one end of the negative pole shrapnel is contacted with the negative pole face of the battery through the second conductive contact hole and conducted, and the other end of the negative pole shrapnel is electrically connected with the electric device of the circuit board.
In some embodiments, two second elastic pieces of the positive electrode elastic piece are arranged, and the two second elastic pieces are respectively arranged at two sides of the connector shell, and the negative electrode elastic piece and the two second elastic pieces are connected to the circuit board at different positions.
In some embodiments, the ratio of the thickness of the connector housing perpendicular to the circuit board to the thickness of the circuit board is 3-4; the height of the connector shell protruding out of the upper surface of the circuit board is smaller than 4mm.
In some embodiments, the mounting locations are configured as notches cut into the edges of the circuit board, and the length of the connector housing along the direction of the depth of the notches is greater than the depth of the notches such that the connector housing portions are located outside of the notches.
In some embodiments, the connector housing has a mounting opening, the mounting opening communicates with the receiving cavity, the battery is loaded into the receiving cavity through the mounting opening, a fixing spring is provided at a position of the connector housing corresponding to the mounting opening, and in a state that the battery is located in the receiving cavity, the fixing spring abuts against a side edge portion of the battery to restrict the battery to be located in the receiving cavity.
In some embodiments, the connector housing has a removal opening located near the bottom edge of the notch.
The second aspect adopted by the embodiment of the utility model is an electronic device, including the battery connector of the first aspect, and a main board of the electronic device is configured as a circuit board.
Compared with the prior art, the embodiment of the utility model has the beneficial effects that: the positive pole shell fragment and negative pole shell fragment are connected with the electrical apparatus electricity of circuit board respectively, and positive pole shell fragment and negative pole shell fragment still support respectively with the positive pole face and the negative pole face of battery, form the power supply structure that switches on to for the electrical apparatus power supply of circuit board, so need not to utilize complicated electric wire to connect between battery and the circuit board, avoid the danger of line ball. The battery is arranged in the accommodating cavity, the battery is fixed on the circuit board of the electronic equipment through the connector shell, the connector shell is partially protruded out of the upper surface of the circuit board, and the connector shell is partially protruded out of the lower surface of the circuit board, so that the problem that the height of the connector shell on the circuit board is large and the thinning of the electronic equipment is not facilitated due to the fact that the whole connector shell is attached to the upper surface of the circuit board can be avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.
An overview of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.
Drawings
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the inventive embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.
Fig. 1 is a schematic diagram of the overall structure of a battery connector at a first angle according to an embodiment of the present utility model after the battery connector is connected to a circuit board.
Fig. 2 is a schematic diagram of the overall structure of the battery connector according to the second embodiment of the present utility model after the battery connector is connected to the circuit board.
Fig. 3 is a schematic structural view of a connector housing according to an embodiment of the utility model.
Fig. 4 is a schematic structural view of an inner housing of a connector according to a first angle of an embodiment of the present utility model.
Fig. 5 is a schematic structural view of an inner housing of a connector according to a second angle of the embodiment of the present utility model.
Fig. 6 is a schematic structural diagram of a negative electrode spring according to an embodiment of the utility model.
Reference numerals:
1-a connector housing; 2-an anode shrapnel; 3-a negative pole shrapnel; 4-a circuit board; 5-a receiving cavity; a 6-connector housing; 7-a connector inner housing; 8-a first elastic piece; 9-a first conductive contact hole; 10-a second elastic sheet; 11-a second conductive contact hole; 12-clamping grooves; 13-a support; 14-fixing the spring plate; 15-a disassembly port; 16-battery.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components thereof have been omitted.
As shown in fig. 1 and 2, the embodiment of the utility model provides a battery connector, which comprises a connector housing 1, and a positive pole spring piece 2 and a negative pole spring piece 3, wherein the connector housing 1 is arranged at a corresponding installation position on a circuit board 4; the connector housing 1 protrudes from the upper surface and the lower surface of the circuit board 4, respectively, and an accommodating cavity 5 for adapting to the battery 16 is formed inside the connector housing 1; the positive pole shrapnel 2 and the negative pole shrapnel 3 are respectively and electrically connected with the electric appliance of the circuit board 4, and are abutted with the positive pole face and the negative pole face of the battery 16 to form a power supply structure in the state that the battery 16 is accommodated in the accommodating cavity 5.
The battery 16 is placed in the receiving cavity 5, and the fixing of the battery 16 to the circuit board 4 of the electronic device is achieved by the connector housing 1. And the connector housing 1 partially protrudes out of the upper surface of the circuit board 4, and partially protrudes out of the lower surface of the circuit board 4, so that the problem that the height of the connector housing 1 on the circuit board 4 is large due to the fact that the whole connector housing 1 is attached to the upper surface of the circuit board 4 can be avoided, and the thinning of the whole electronic equipment is facilitated.
The positive electrode spring plate 2 and the negative electrode spring plate 3 are respectively electrically connected with the circuit board 4, for example, by soldering tin. The positive pole shrapnel 2 and the negative pole shrapnel 3 are respectively abutted with the positive pole face and the negative pole face of the battery 16 to form a conductive power supply structure so as to supply power to the electric device of the circuit board 4. The battery 16 and the circuit board 4 are not required to be connected by using complex wires, so that the danger of wire pressing is avoided, and the installation and the use are more convenient. The whole connector has simple manufacturing process and lower cost.
When the circuit board 4 is tested, the repeated plug of the wire connector is not needed, and only the operation that the battery 16 enters and exits the accommodating cavity 5 is needed to be repeated, so that the testing efficiency is improved.
As shown in fig. 1, 2, 3, 4 and 5, in some embodiments, the connector housing 1 includes a connector outer housing 6 and a connector inner housing 7, the connector outer housing 6 is coated on an outer surface of the connector inner housing 7, the connector outer housing 6 is made of a metal conductive material, and the connector inner housing 7 is made of a plastic insulating material. The connector shell 6 made of metal materials enables the connector to have higher strength, the inner shell made of plastic materials can provide support for the outer shell, the whole connector is not easy to deform, the positive pole shrapnel 2 and the negative pole shrapnel 3 are favorably kept in continuity and good lap joint with the battery 16, the pins are not easy to be unwelded, and the stability of use is ensured. The connector inner housing 7 also has an insulating effect. The specific plastic insulating material can comprise polyvinyl chloride (EC) material or ABS plastic material and the like. The metal conductive material may be SUS stainless steel material or the like. In addition, the high strength of the connector housing 1 and the structural form of the accommodating chamber 5 for connecting the battery 16 are not easy to break when the battery 16 is mounted and dismounted, and the connector housing 1 is not damaged by multiple plugging and unplugging in the case of testing the circuit board 4 and the like.
As shown in fig. 1 and 2, in some embodiments, the connector housing 1 is provided with a first conductive contact hole 9, the positive pole elastic piece 2 includes a first elastic piece 8 and a second elastic piece 10 that are respectively connected with the connector housing 6, the first elastic piece 8 contacts and conducts with the positive pole surface of the battery 16 through the first conductive contact hole 9, and the second elastic piece 10 is electrically connected with the electrical device of the circuit board 4. The first elastic piece 8 contacts and conducts with the positive electrode surface of the battery 16, and the connector housing 6 has the electric conduction capacity, so that the first elastic piece 8, the connector housing 6 and the second elastic piece 10 are matched together to complete the electric connection between the positive electrode of the battery 16 and the electric device on the circuit board 4.
As shown in fig. 1, 2, 4, 5 and 6, in some embodiments, the connector housing 1 is provided with a second conductive contact hole 11, a clamping groove 12 is provided on the connector inner housing 7 corresponding to a side wall of the second conductive contact hole, the negative pole shrapnel 3 is connected with the clamping groove 12, one end of the negative pole shrapnel 3 contacts and conducts with a negative pole surface of the battery 16 through the second conductive contact hole 11, and the other end is electrically connected with an electrical device of the circuit board 4. The negative pole shell fragment 3 is fixed through connector inner shell 7, can also realize with the contact and the switch-on of negative pole face.
As shown in fig. 1, 2 and 3, in some embodiments, two second spring plates 10 of the positive spring plate 2 are disposed, and the two second spring plates 10 are respectively disposed at two sides of the connector housing 1, and the negative spring plate 3 and the two second spring plates 10 are connected to the circuit board 4 at different positions. In order to power the electrical devices on the circuit board 4. The second spring plate 10 and the negative spring plate 3 can be connected to the circuit board 4 through welding respectively, so that the connection between the battery connector and the circuit board 4 is firmer. In addition, can set up the connecting hole in the position that the circuit board corresponds second shell fragment and negative pole shell fragment, second shell fragment and negative pole shell fragment can insert in the connecting hole like this, then carry out soldering tin and connect, improve the stability of connection. In this way, no solder stripping is caused at the soldering site by deformation of the connector housing.
As shown in fig. 1, 4 and 5, in some embodiments, a support portion 13 is disposed at a position corresponding to the second conductive contact hole 11 at a side edge portion of the inner connector housing 7, the support portion 13 is disposed through the outer connector housing 6, and the support portion 13 abuts against the upper surface of the circuit board 4. The two second elastic pieces 10 and the supporting part 13 are respectively connected with different positions of the circuit board 4 to form a triangular supporting system, so that the connection between the battery connector and the circuit board 4 is firmer and more stable.
In some embodiments, the ratio of the thickness of the connector housing 1 in the direction perpendicular to the circuit board 4 to the thickness of the circuit board 4 is 3-4; the height of the connector housing 1 protruding from the upper surface of the circuit board is less than 4mm. For example, the thickness of the circuit board 4 is 1.2mm, the thickness of the connector housing 1 is 4.3mm, and the height of the connector housing 1 protruding from the upper surface of the circuit board is 2.5mm. Since the connector housing 1 is provided in a form of partially protruding from the circuit board 4, the thickness of the connector housing 1 protruding from the upper surface of the circuit board 4 can be less than 4mm, and even can be made to be 2.5mm or less than 2.5mm, which is advantageous in that the thickness of the entire electronic apparatus becomes small.
As shown in fig. 1 and 2, in some embodiments, the mounting location is configured as a notch opened at an edge of the circuit board 4, and a length of the connector housing 1 along a direction of a depth of the notch is greater than the depth of the notch, such that the connector housing 1 is partially located outside of the notch. The notch is provided at the edge of the circuit board 4, which can facilitate the installation of the battery connector and the insertion and extraction of the battery 16. The occupied area of the circuit board 4 can be reduced. In addition, the mounting position can further select a non-part area of the circuit board 4, and does not occupy the part area of the circuit board 4.
In some embodiments, the length of the connector housing 1 outside the notch along the depth direction of the notch is 0.2-0.35, and further may be 0.3-0.35 of the length of the connector housing 1. For example, the length of the connector housing 1 along the depth direction of the notch is 22mm, and the length of the connector housing 1 outside the notch is 7.5mm.
As shown in fig. 1 and 2, in some embodiments, the connector housing 1 has a mounting opening communicating with the accommodation chamber 5 through which the battery 16 is fitted into the accommodation chamber 5, and the connector housing 6 has a fixing spring piece 14 at a position corresponding to the mounting opening, and the fixing spring piece 14 abuts against a side edge portion of the battery 16 in a state where the battery 16 is located in the accommodation chamber 5 to restrain the battery 16 within the accommodation chamber 5. The accommodating chamber 5 has the function of restraining the battery 16, and the battery 16 is abutted against the battery 16 from the outside of the accommodating chamber 5 through the fixing spring piece 14, so that the battery 16 can be stably installed in the accommodating chamber 5.
As shown in fig. 1, 2 and 3, in some embodiments, the connector housing 1 has a removal opening 15, the removal opening 15 being located near the bottom edge of the notch. The disassembly opening 15 is communicated with the accommodating cavity 5, and when the battery 16 is disassembled, the battery 16 is pushed out only through the disassembly opening 15. The battery 16 is easily removed and damage to the connector housing 1 is avoided.
The embodiment of the utility model also provides electronic equipment, which comprises the battery connector of any embodiment of the utility model, wherein the main board of the electronic equipment is configured as the circuit board 4. The electronic device provided with the battery connector has the advantages that the small battery 16 is convenient to mount and dismount, the occupied area of the circuit board 4 is small, and the height protruding from the upper surface of the circuit board 4 is small.
The above description is intended to be illustrative and not limiting, and variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present disclosure. Also, the above examples (or one or more aspects thereof) may be used in combination with each other, and it is contemplated that the embodiments may be combined with each other in various combinations or permutations.

Claims (10)

1. The battery connector is characterized by comprising a connector shell, an anode spring piece and a cathode spring piece, wherein the connector shell is arranged at a corresponding installation position on a circuit board;
the connector shell protrudes out of the upper surface and the lower surface of the circuit board respectively, and an accommodating cavity for adapting to the battery is formed in the connector shell;
the positive pole shell fragment and negative pole shell fragment are connected with the electrical apparatus electricity of circuit board respectively, in the battery holding in hold the state of chamber, with positive pole face and the negative pole face butt of battery form the power supply structure.
2. The battery connector of claim 1, wherein the connector housing comprises a connector outer housing and a connector inner housing, the connector outer housing is wrapped on the outer surface of the connector inner housing, the connector outer housing is made of a metal conductive material, and the connector inner housing is made of a plastic insulating material.
3. The battery connector of claim 2, wherein the connector housing is provided with a first conductive contact hole, the positive electrode spring piece comprises a first spring piece and a second spring piece which are respectively connected with the connector housing, the first spring piece is contacted with the positive electrode surface of the battery through the first conductive contact hole and is conducted, and the second spring piece is electrically connected with the electric device of the circuit board.
4. The battery connector according to claim 3, wherein the connector housing is provided with a second conductive contact hole, the connector inner housing corresponding to a side wall of the second conductive contact hole is provided with a clamping groove, the negative pole spring piece is connected with the clamping groove, one end of the negative pole spring piece is in contact with and conducted with a negative pole surface of the battery through the second conductive contact hole, and the other end of the negative pole spring piece is electrically connected with an electric device of the circuit board.
5. The battery connector according to claim 3, wherein two second elastic pieces are provided for the positive elastic piece, and the two second elastic pieces are respectively provided on two sides of the connector housing, and the negative elastic piece and the two second elastic pieces are connected to the circuit board at different positions.
6. The battery connector of claim 1, wherein a ratio of a thickness of the connector housing perpendicular to the circuit board direction to a circuit board thickness is 3:1-4:1; the connector housing protrudes from the upper surface of the circuit board by a height of less than 4mm.
7. The battery connector of claim 1, wherein the mounting location is configured as a notch opening at an edge of the circuit board, a length of the connector housing along a direction of a depth of the notch being greater than the depth of the notch such that the connector housing portion is located outside of the notch.
8. The battery connector according to claim 2, wherein the connector housing has a mounting port which communicates with the accommodation chamber, the battery is fitted into the accommodation chamber through the mounting port, and the connector housing has a fixing spring piece at a position corresponding to the mounting port, and in a state where the battery is in the accommodation chamber, the fixing spring piece abuts against a side edge portion of the battery to restrict the battery from being in the accommodation chamber.
9. The battery connector of claim 7, wherein the connector housing has a removal opening located proximate a bottom edge of the notch.
10. An electronic device comprising the battery connector of any one of claims 1-9, wherein a motherboard of the electronic device is configured as the circuit board.
CN202321571491.6U 2023-06-16 2023-06-16 Battery connector and electronic equipment Active CN220122140U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321571491.6U CN220122140U (en) 2023-06-16 2023-06-16 Battery connector and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321571491.6U CN220122140U (en) 2023-06-16 2023-06-16 Battery connector and electronic equipment

Publications (1)

Publication Number Publication Date
CN220122140U true CN220122140U (en) 2023-12-01

Family

ID=88887228

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321571491.6U Active CN220122140U (en) 2023-06-16 2023-06-16 Battery connector and electronic equipment

Country Status (1)

Country Link
CN (1) CN220122140U (en)

Similar Documents

Publication Publication Date Title
CN201018034Y (en) Cable connector assembly
CN201438799U (en) Circuit board bracket
WO2019201015A1 (en) Back-clamping battery
US6860743B2 (en) Adaptor assembly
CN220122140U (en) Battery connector and electronic equipment
CN212011033U (en) Battery and electronic device with same
CN114156575A (en) Button cell, battery module and electronic equipment
EP2985839B1 (en) Plug
CN201038388Y (en) Power supply connector
CN210576595U (en) Charging plug, charging wire and charger
CN216311939U (en) Battery and expandable battery module
CN212163632U (en) Wireless earphone charging box
CN218039898U (en) Connecting seat, connector, battery pack and terminal equipment
CN211062823U (en) Charging device
CN220673422U (en) Vehicle-mounted charger
CN205141277U (en) Electric connector
CN205141186U (en) Electric connector
CN216213963U (en) Terminal switching structure and battery pack
CN219046345U (en) Socket with charging power supply
CN211088545U (en) Connector, battery pack and electronic device
CN213340907U (en) Easily-replaced plug assembly
CN210668906U (en) Row socket with USB jack
CN214100931U (en) Compact charger
CN102117984A (en) Socket module and combined device of socket module and plug
CN213243014U (en) Wiring mechanism of electric connector

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant