CN109587984B - Campus safety electronic communication equipment based on thing networking - Google Patents

Campus safety electronic communication equipment based on thing networking Download PDF

Info

Publication number
CN109587984B
CN109587984B CN201811357404.0A CN201811357404A CN109587984B CN 109587984 B CN109587984 B CN 109587984B CN 201811357404 A CN201811357404 A CN 201811357404A CN 109587984 B CN109587984 B CN 109587984B
Authority
CN
China
Prior art keywords
key
button
electronic communication
slope
circuit board
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
CN201811357404.0A
Other languages
Chinese (zh)
Other versions
CN109587984A (en
Inventor
陈丽琴
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.)
Zhejiang Business College
Original Assignee
Zhejiang Business College
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 Zhejiang Business College filed Critical Zhejiang Business College
Priority to CN201811357404.0A priority Critical patent/CN109587984B/en
Publication of CN109587984A publication Critical patent/CN109587984A/en
Application granted granted Critical
Publication of CN109587984B publication Critical patent/CN109587984B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/12Movable parts; Contacts mounted thereon
    • H01H13/14Operating parts, e.g. push-button
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/12Movable parts; Contacts mounted thereon
    • H01H13/20Driving mechanisms

Abstract

The invention provides campus safety electronic communication equipment based on the Internet of things, which comprises an electronic communication box shell, a key limiting plate and a communication circuit board, wherein the communication circuit board is fixedly installed inside the electronic communication box shell, the surface of the electronic communication box shell is fixedly connected with a key board, the surface of the key board is provided with a plurality of key holes, the inner walls of the key holes are connected with horizontal keys in a sliding manner, one ends of the horizontal keys are hinged with inclined supporting tubes, and the surfaces of the inclined supporting tubes incline upwards, and the campus safety electronic communication equipment relates to the field of communication equipment. This campus safety electronic communication equipment based on thing networking changes traditional button structure, changes the relation of connection of button and circuit board, utilizes magnetism to inhale power and inertial power and accomplishes the button work to effectual solved general electronic communication equipment in the campus by the high frequency use lead to button and circuit board distance to pull open easily, the condition that the button is malfunctioning appears, give the problem that normal apartment communication brought inconvenience.

Description

Campus safety electronic communication equipment based on thing networking
Technical Field
The invention relates to the technical field of communication equipment, in particular to campus security electronic communication equipment based on the Internet of things.
Background
The school is provided with a student apartment and a teacher apartment, communication equipment is arranged on doors of some apartments to facilitate conversation between buildings, downstairs communication devices and communication devices inside dormitories can be used in a matched mode, and the communication equipment can be communicated with the communication devices inside the dormitories through key operation of the communication devices outside the downstairs doors, due to the fact that outdoor environment is complex, some keys cannot be in contact with circuit boards due to wind, sunshine and frequent use of human factors, the keys need to be pressed forcefully to be in contact with the circuit boards, habits and the power paths of many people are different, but the distance between the keys and the circuit boards is easy to be larger and larger, the keys need to be adjusted again for a long time due to failure, after adjustment, people may feel that the keys are forcefully pressed by subconscious, and the use of the ordinary electronic communication equipment is inconvenient in the school due to high-frequency use, the distance between the keys and the circuit boards is easy to be pulled, the situation that the keys are out of order brings inconvenience to normal apartment communication, so that the campus safety electronic communication equipment based on the Internet of things is needed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides campus safety electronic communication equipment based on the Internet of things, and solves the problems that the distance between a key and a circuit board is easy to be pulled apart when common electronic communication equipment is used at a high frequency in a campus, the key fails, and the inconvenience is brought to normal apartment communication.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a campus safety electronic communication device based on the Internet of things comprises an electronic communication box shell, a key limiting plate and a communication circuit board, wherein the communication circuit board is fixedly arranged in the electronic communication box shell, the surface of the electronic communication box shell is fixedly connected with a key board, the surface of the key board is provided with a plurality of key holes, the inner wall of each key hole is slidably connected with a horizontal key, one end of each horizontal key is hinged with an inclined supporting tube, the surface of each inclined supporting tube inclines upwards, the inner wall of each inclined supporting tube is slidably connected with an inclined key, the material of each inclined key comprises iron, one end of each inclined key is always exposed out of the corresponding inclined supporting tube, the inclined direction of each inclined key is consistent with the inclined direction of each inclined supporting tube, the inner wall of each inclined supporting tube is provided with an inner limiting groove, and the surface of each inclined key is inlaid with a, the surface of activity spacing pearl and the inner wall sliding connection of intraductal spacing groove, the fixed surface of horizontal button is connected with the tension ring, the fixed surface of tension ring is connected with the extension spring, the one end that the tension ring was kept away from to the extension spring is connected with the fixed surface of keypad.
The utility model discloses a communication circuit board, including button limiting plate, button hole, fixed bolt, button hole, the fixed bolt is connected with the fixed surface of keypad to the surface of button limiting plate, the spacing hole of a plurality of button has been seted up on the surface of button limiting plate, the quantity in the spacing hole of button is the same with the quantity in button hole, the button hole is with the spacing hole one-to-one of button, the spacing hole of button faces communication circuit board, the interior roof fixedly connected with powerful permanent magnet in the spacing hole of button, the interior diapire fixedly connected with bracing piece in the spacing hole of button, the one end that the spacing downthehole diapire of button was kept away from to the bracing piece is inlayed and is had.
Preferably, the communication circuit board is mounted in the same manner as a general communication device circuit board.
Preferably, one surface of the key board is positioned outside the electronic communication box shell, and the other surface of the key board is positioned inside the electronic communication box shell.
Preferably, the top of the inclined supporting tube is hinged with the top of the horizontal key, the inclined supporting tube is removed from the position hinged with the horizontal key, and the rest part of the inclined supporting tube is overlapped on the surface of the horizontal key, so that the inclined supporting tube is convenient to rotate.
Preferably, the inner wall of the key hole is provided with an inner limiting groove, the inner wall of the inner limiting groove is connected with a limiting block in a sliding mode, and the surface of the limiting block is fixedly connected with the surface of the horizontal key.
Preferably, the fixed surface of button limiting plate is connected with the attachment strap, the groove has been seted up and has been leaned on the surface of button board, the surface of attachment strap with take the inner wall overlap joint in groove, when installing the button limiting plate, will earlier with the attachment strap with take the groove butt joint, then screwed on fixing bolt, easy to assemble.
Preferably, the surface of the electronic communication box shell is fixedly provided with a display screen, and the display screen is positioned above the key board.
(III) advantageous effects
(1) When the invention is used, the horizontal key is pressed from the outside of the shell of the electronic communication box, the horizontal key slides in the key hole and drives the inclined supporting tube to approach to the strong permanent magnet in the key limiting hole, the inclined supporting tube is pushed upwards by the movable top ball at the bottom when sliding in the key limiting hole, the inclined supporting tube rotates, the inclined angle of the inclined supporting tube which is closer to the strong permanent magnet is larger, the inclined key is closer to the strong permanent magnet, the inclined key is attracted by the strong permanent magnet and can instantly slide outwards in the inclined supporting tube, the inclined key punched from the inclined supporting tube can not contact the strong permanent magnet all the time, but can be punched to the position of the communication circuit board corresponding to the inclined key under the action of the attraction force and inertia of the strong permanent magnet, the key work is finished, compared with the common key, the key is slightly influenced by the pressing force, the pressing force cannot be directly applied to the circuit board, the circuit board cannot be separated from the key under the action of the pressing force, and the condition that the key fails due to the fact that the key is farther and farther is avoided.
(2) When the invention is used, the attractive force of the strong permanent magnet and the inertia of the inclined key are instantly contacted with the corresponding position of the communication circuit board, then the inertia disappears instantly after being blocked, the inclined key is separated from the communication circuit board and keeps a gap with the communication circuit board, compared with the common key, the situation that the number is input again carelessly when the finger is not completely loosened can not occur, and the situation that the input is repeated due to one-time key pressing can be avoided.
(3) According to the invention, the inclined supporting tube is arranged, on one hand, the inclined supporting tube can provide the function of supporting the inclined key, on the other hand, after the key is pressed, the horizontal key is loosened, the tension spring pulls the horizontal key to reset through the tension ring, the horizontal key drives the inclined supporting tube to be far away from the strong permanent magnet, the inclined supporting tube can drive the inclined key to be lowered downwards and far away from the strong permanent magnet when being far away from the strong permanent magnet, the inclined key slides down to the inner part of the inclined supporting tube under the action of gravity, the inclined supporting tube is convenient for resetting of the inclined key, and the use.
(4) The invention changes the traditional key structure, changes the connection relation between the key and the circuit board, and utilizes the magnetic attraction force and the inertia force to complete the key work, thereby effectively solving the problem that the common electronic communication equipment is used at high frequency in a campus, which easily causes the distance between the key and the circuit board to be pulled apart, causes the key failure and brings inconvenience to normal apartment communication.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of the key sheet structure of the present invention;
FIG. 3 is a perspective view of a key position-limiting plate structure according to the present invention;
FIG. 4 is a cross-sectional view of a key retaining plate structure according to the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 4A according to the present invention.
Wherein, 1 electronic communication case casing, 2 button limiting plates, 3 communication circuit board, 4 keypad, 5 key holes, 6 horizontal button, 7 slope stay tubes, 8 slope buttons, 9 intraductal spacing grooves, 10 spacing pearls of activity, 11 tension ring, 12 extension springs, 13 fixing bolt, 14 spacing holes of button, 15 display screens, 16 powerful permanent magnet, 17 bracing pieces, 18 activity top pearls, 19 downthehole spacing grooves, 20 stoppers, 21 buttresses, 22 take the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, an embodiment of the present invention provides a campus security electronic communication device based on the internet of things, including an electronic communication box housing 1, a key limiting plate 2 and a communication circuit board 3, the installation manner of the communication circuit board 3 is the same as that of a general communication device circuit board, the surface of the key limiting plate 2 is fixedly connected with an access plate 21, the surface of the key plate 4 is provided with a storage groove 22, the surface of the access plate 21 is in lap joint with the inner wall of the storage groove 22, the communication circuit board 3 is fixedly installed inside the electronic communication box housing 1, the surface of the electronic communication box housing 1 is fixedly connected with a key plate 4, one surface of the key plate 4 is located outside the electronic communication box housing 1, the other surface of the key plate 4 is located inside the electronic communication box housing 1, the surface of the electronic communication box housing 1 is fixedly installed with a display screen 15, the display screen 15 is located above the, the surface of the key board 4 is provided with a plurality of key holes 5, the inner wall of the key hole 5 is provided with an inner limiting groove 19, the inner wall of the inner limiting groove 19 is connected with a limiting block 20 in a sliding way, the surface of the limiting block 20 is fixedly connected with the surface of the horizontal key 6, the inner wall of the key hole 5 is connected with the horizontal key 6 in a sliding way, one end of the horizontal key 6 is hinged with an inclined supporting tube 7, the top of the inclined supporting tube 7 is hinged with the top of the horizontal key 6, the inclined supporting tube 7 is removed from the position hinged with the horizontal key 6, the rest part is lapped on the surface of the horizontal key 6, the surface of the inclined supporting tube 7 inclines upwards, the inner wall of the inclined supporting tube 7 is connected with an inclined key 8 in a sliding way, the material of the inclined key 8 comprises iron, one end of the inclined key 8 is always exposed out, limiting groove 9 in the pipe has been seted up to the inner wall of slope stay tube 7, and the surface mosaic of slope button 8 has activity limiting bead 10, and the surface of activity limiting bead 10 and the inner wall sliding connection of intraductal limiting groove 9, the fixed surface of horizontal button 6 is connected with tension ring 11, and the fixed surface of tension ring 11 is connected with extension spring 12, and tension ring 11's one end and keypad 4's fixed surface are connected are kept away from to extension spring 12.
The surface threaded connection of button limiting plate 2 has fixing bolt 13, the fixed surface that fixing bolt 13 and keypad 4 were passed through to the surface of button limiting plate 2 is connected, the spacing hole 14 of a plurality of button has been seted up on the surface of button limiting plate 2, the quantity of the spacing hole 14 of button is the same with the quantity of button hole 5, button hole 5 and the spacing hole 14 one-to-one of button, the spacing hole 14 of button faces communication circuit board 3, the powerful permanent magnet 16 of interior roof fixedly connected with in the spacing hole 14 of button, the interior diapire fixedly connected with bracing piece 17 in the spacing hole 14 of button, the one end that diapire was kept away from in the spacing hole 14 of button to bracing piece 17 is inlayed and is had movable summit 18, movable summit 18 is located the.
When the electronic communication box is used, the horizontal key 6 is pressed from the outside of the electronic communication box shell 1, the horizontal key 6 slides in the key hole 5 and drives the inclined support tube 7 to approach to the strong permanent magnet 16 in the key limit hole 14, the inclined support tube 7 is pushed upwards by the movable top bead 18 at the bottom when sliding in the key limit hole 14, the inclined support tube 7 rotates, the inclined angle of the inclined support tube 7 which is closer to the strong permanent magnet 16 is larger, the inclined key 8 which is closer to the strong permanent magnet 16 is smaller, the inclined key 8 which is attracted by the strong permanent magnet 16 can instantly slide outwards in the inclined support tube 7, the inclined key 8 which is punched out from the inclined support tube 7 can not contact with the strong permanent magnet 16 all the time, but can be punched to the position of the corresponding communication circuit board 3 under the action of the attraction force and inertia of the strong permanent magnet 16, accomplish the work that the button was pressed, then inertia disappears in the twinkling of an eye after being blocked, slope button 8 breaks away from communication circuit board 3 and keeps having the space with communication circuit board 3, press the completion back at the button, loosen horizontal button 6, extension spring 12 resets through 11 pulling horizontal buttons 6 of tension ring, horizontal button 6 drives slope stay tube 7 and keeps away from powerful permanent magnet 16, slope stay tube 7 keeps away from powerful permanent magnet 16 and will drive slope button 8 and descend the position and keep away from powerful permanent magnet 16 downwards, slope button 8 landing can incline the inside of stay tube 7 under the effect of gravity, the slope stay tube 7 of slope makes things convenient for the restoration of slope button 8, thereby the whole campus safety electronic communication equipment's based on the thing networking button use process has been accomplished.

Claims (7)

1. The utility model provides a campus safety electronic communication equipment based on thing networking, includes electronic communication case casing (1), button limiting plate (2) and communication circuit board (3), communication circuit board (3) fixed mounting is in the inside of electronic communication case casing (1), the fixed surface of electronic communication case casing (1) is connected with keypad (4), a plurality of button hole (5) have been seted up on the surface of keypad (4), the inner wall sliding connection that has horizontal button (6), its characterized in that according to button hole (5): the one end of horizontal button (6) articulates there is slope stay tube (7), the surperficial tilt up of slope stay tube (7), the inner wall sliding connection of slope stay tube (7) has slope button (8), the material of slope button (8) includes iron, the one end of slope button (8) exposes in the outside of slope stay tube (7) all the time, the incline direction of slope button (8) is unanimous with the incline direction of slope stay tube (7), the inner wall of slope stay tube (7) has been seted up intraductal spacing groove (9), the surface mosaic of slope button (8) has activity spacing pearl (10), the surface of activity spacing pearl (10) and the inner wall sliding connection of intraductal spacing groove (9), the fixed surface of horizontal button (6) is connected with pulling force ring (11), the fixed surface of pulling force ring (11) is connected with extension spring (12), one end of the tension spring (12) far away from the tension ring (11) is fixedly connected with the surface of the key board (4);
the surface of the key limiting plate (2) is in threaded connection with a fixing bolt (13), the surface of the key limiting plate (2) is fixedly connected with the surface of the key plate (4) through the fixing bolt (13), the surface of the key limiting plate (2) is provided with a plurality of key limiting holes (14), the number of the key limiting holes (14) is the same as that of the key holes (5), the key holes (5) correspond to the key limiting holes (14) one by one, the key limiting hole (14) is right opposite to the communication circuit board (3), the inner top wall of the key limiting hole (14) is fixedly connected with a strong permanent magnet (16), a supporting rod (17) is fixedly connected with the inner bottom wall of the key limiting hole (14), one end of the supporting rod (17) far away from the inner bottom wall of the key limiting hole (14) is embedded with a movable top bead (18), the movable top bead (18) is always positioned below the inclined supporting tube (7).
2. The Internet of things-based campus security electronic communication device of claim 1, wherein: the installation mode of the communication circuit board (3) is the same as that of a common communication equipment circuit board.
3. The Internet of things-based campus security electronic communication device of claim 1, wherein: one side of the key board (4) is positioned outside the electronic communication box shell (1), and the other side of the key board (4) is positioned inside the electronic communication box shell (1).
4. The Internet of things-based campus security electronic communication device of claim 1, wherein: the top of the inclined supporting pipe (7) is hinged with the top of the horizontal key (6), the inclined supporting pipe (7) is hinged with the horizontal key (6), and the rest part of the inclined supporting pipe is overlapped on the surface of the horizontal key (6).
5. The Internet of things-based campus security electronic communication device of claim 1, wherein: downthehole spacing groove (19) have been seted up to the inner wall in button hole (5), the inner wall sliding connection of downthehole spacing groove (19) has stopper (20), the fixed surface of the surface of stopper (20) and horizontal button (6) is connected.
6. The Internet of things-based campus security electronic communication device of claim 1, wherein: the fixed surface of button limiting plate (2) is connected with take board (21), take groove (22) on the surface of button board (4) has been seted up, the inner wall overlap joint of groove (22) is taken with the surface of take board (21).
7. The Internet of things-based campus security electronic communication device of claim 1, wherein: the surface fixed mounting of electronic communication case casing (1) has display screen (15), display screen (15) are located the top of keypad (4).
CN201811357404.0A 2018-11-15 2018-11-15 Campus safety electronic communication equipment based on thing networking Active CN109587984B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811357404.0A CN109587984B (en) 2018-11-15 2018-11-15 Campus safety electronic communication equipment based on thing networking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811357404.0A CN109587984B (en) 2018-11-15 2018-11-15 Campus safety electronic communication equipment based on thing networking

Publications (2)

Publication Number Publication Date
CN109587984A CN109587984A (en) 2019-04-05
CN109587984B true CN109587984B (en) 2020-07-17

Family

ID=65922714

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811357404.0A Active CN109587984B (en) 2018-11-15 2018-11-15 Campus safety electronic communication equipment based on thing networking

Country Status (1)

Country Link
CN (1) CN109587984B (en)

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3137000B2 (en) * 1996-07-05 2001-02-19 松下電器産業株式会社 Electromotive type switch device and electronic equipment provided with the same
DE102008041806A1 (en) * 2008-09-04 2010-03-11 Würth Elektronik Pforzheim GmbH & Co. KG Operating device
CN201590377U (en) * 2010-01-15 2010-09-22 美的集团有限公司 Magnetic micro switch
TWI422751B (en) * 2011-08-11 2014-01-11 Wistron Corp Magnetic switch device and electronic device having the same
CN103065844B (en) * 2013-01-05 2015-01-07 苏州达方电子有限公司 Magnetic type key and magnetic type keyboard
CN105679580A (en) * 2014-11-22 2016-06-15 天津市环航人民电器有限公司 Electrical equipment switch
CN204680577U (en) * 2015-04-03 2015-09-30 酷派软件技术(深圳)有限公司 A kind of button and use the terminal of this button
CN204634218U (en) * 2015-06-05 2015-09-09 太仓市同维电子有限公司 A kind of communication apparatus and button thereof
CN205542518U (en) * 2015-11-26 2016-08-31 杨丽 Mechanical type keyboard key switch
CN205582794U (en) * 2016-04-13 2016-09-14 惠州Tcl移动通信有限公司 Cell -phone and magnetism button thereof
JP2018055935A (en) * 2016-09-28 2018-04-05 株式会社東海理化電機製作所 Switch device
CN206758298U (en) * 2017-05-27 2017-12-15 长春嘉信通信信息技术有限公司 A kind of ups power special switch
CN206789489U (en) * 2017-05-31 2017-12-22 瑞安市阿汉汽车部件有限公司 A kind of magnetite magnetic switch of multidigit spring
CN207624593U (en) * 2017-12-14 2018-07-17 北京安航达科技有限公司 Magnetic suspension button
CN108305805A (en) * 2017-12-28 2018-07-20 杨洪 Assembled keyboard button is connected with magnet for magnetic electronic element
CN207765347U (en) * 2018-02-05 2018-08-24 大理九天网络科技有限公司 Control of bluetooth access control switch
CN208014615U (en) * 2018-03-26 2018-10-26 胡敏 A kind of electromagnetic switch
CN108565160A (en) * 2018-06-15 2018-09-21 重庆光大网络技术有限公司 Plot managing device based on Immovable Property Registration

Also Published As

Publication number Publication date
CN109587984A (en) 2019-04-05

Similar Documents

Publication Publication Date Title
CN202191703U (en) Remote control transmitter arranged on personal portable touch communication equipment
US20160123447A1 (en) Blind body positioning mechanism for non pull cord window blind and window blind using same
TWM518728U (en) Control device for a cordless blind
CN108351623A (en) System for controlling living space feature
US20160143486A1 (en) Partition technologies
US8231022B2 (en) Recessed wall housing for concealing wall mounted electrical devices
US20110061823A1 (en) Counterbalanced blind
CN203552375U (en) Safety device with tamper device function
DE202009018217U1 (en) Multi-function unit
CN102026510A (en) Electronic device and support thereof
CN203232473U (en) Visual door control system
CN204031252U (en) Smart mobile phone testing equipment
CN101465010A (en) Television gate control system and control method thereof
US10060615B2 (en) Easily controllable umbrella with lighting elements
US20090316343A1 (en) Portable apparatus, fastening device and locking mechanism thereof
CN207625709U (en) Construction safety monitoring device
CN107995331A (en) A kind of screen equipment and comprehensive screen mobile phone comprehensively
WO2020259299A1 (en) Mobile terminal
TWI233773B (en) Interface panel structure
CN104533107B (en) Shower room with face recognition function and voice recognition function
CN209593994U (en) Intelligent control panel and smart home system
CN204613575U (en) A kind of star chart projector
KR20080035316A (en) Internal battery pack cover locking apparatus for mobile phone
CN108577118A (en) A kind of glove storage device and the Multifunctional travel suitcase using the device
KR101539677B1 (en) Home networking kitchen TV system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant