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CN112382023A - Remote waterproof intelligent electronic remote control doorbell device and control system - Google Patents

Remote waterproof intelligent electronic remote control doorbell device and control system Download PDF

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Publication number
CN112382023A
CN112382023A CN202011257038.9A CN202011257038A CN112382023A CN 112382023 A CN112382023 A CN 112382023A CN 202011257038 A CN202011257038 A CN 202011257038A CN 112382023 A CN112382023 A CN 112382023A
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CN
China
Prior art keywords
control system
intelligent electronic
box
collision
doorbell device
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.)
Pending
Application number
CN202011257038.9A
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Chinese (zh)
Inventor
张鹏
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.)
Dalian Jiaotong University
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Dalian Jiaotong University
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Publication date
Application filed by Dalian Jiaotong University filed Critical Dalian Jiaotong University
Priority to CN202011257038.9A priority Critical patent/CN112382023A/en
Publication of CN112382023A publication Critical patent/CN112382023A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00Audible signalling systems; Audible personal calling systems
    • G08B3/10Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136Forced ventilation, e.g. by fans

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The invention discloses a remote waterproof intelligent electronic remote control doorbell device and a control system, which comprise a box body, a support, support legs, a main board and an indicator lamp, wherein the support legs are arranged on two sides of the bottom end of the box body, an information processing module is arranged at one end of the top end of the main board, and mounting screws are arranged at the bottom end of the support. According to the anti-collision device, the telescopic rod is arranged on the outer side of the fixed block, the telescopic rod and the fixed block form a sliding structure, the telescopic rod and the fixed block are connected through the anti-collision spring, when an object is collided with the device, the protection plate can protect the device, the device is prevented from being directly collided, meanwhile, the telescopic rod on one side of the protection plate can slide into the fixed block due to the fact that the protection plate is collided, then the elasticity of the anti-collision spring can buffer the device to be impacted, the connecting rod can stretch out and draw back, the connecting rod can prevent the anti-collision protection plate from deviating, and therefore.

Description

Remote waterproof intelligent electronic remote control doorbell device and control system
Technical Field
The invention relates to the technical field of control systems, in particular to a remote waterproof intelligent electronic remote control doorbell device and a control system.
Background
Along with the continuous development of the society, the control system industry has gained vigorous development, and electronic remote control doorbell means that doorbell transmitter and indoor set can operate through wireless remote control, and remote control doorbell is also called wireless remote control doorbell, and traditional waterproof intelligent electronic remote control doorbell needs a control system to control remote control doorbell, but traditional control system still has a lot of not enough needs to improve.
The traditional electronic remote control doorbell device and the control system thereof are difficult to avoid collision, and the device is easy to be damaged due to collision of other objects or falling of other objects on the ground, so that the device needs to be protected.
Disclosure of Invention
The invention aims to provide a remote waterproof intelligent electronic remote control doorbell device and a control system, and aims to solve the problem that the electronic remote control doorbell device and the control system provided in the background technology are convenient to prevent collision.
In order to achieve the purpose, the invention provides the following technical scheme: a remote waterproof intelligent electronic remote control doorbell device and a control system comprise a box body, supports, support legs, a main board and an indicator lamp, wherein the support legs are arranged on two sides of the bottom end of the box body, a heat dissipation mechanism is arranged at the middle position of the bottom end of the box body, an anti-collision structure is arranged on the outer side of the box body and comprises a fixed block, a telescopic rod, a protection plate, a connecting rod and an anti-collision spring, the fixed block is arranged on the outer side of the box body, the telescopic rod is arranged on the outer side of the fixed block, the anti-collision spring is arranged at one end of the telescopic rod, the protection plate is arranged on the outer side of the telescopic rod, the indicator lamp is arranged at one end of the top end of the box body, a control board is arranged at the top end of the box body, the supports are, information processing module is installed to the one end on mainboard top, the installation screw is installed to the bottom of support.
Preferably, the inside of fixed block is provided with the spout, the both sides of telescopic link all are provided with the pulley, fixed block and telescopic link constitute sliding structure.
Preferably, the connecting rod is installed to the inboard of guard plate, and the connecting rod is the symmetric distribution about the axis of guard plate.
Preferably, heat dissipation mechanism includes bellows, fan, louvre and filter screen, the bottom at the box is installed to bellows, the internally mounted of bellows has the fan, the filter screen is installed on the inside top of bellows.
Preferably, the top and the bottom of bellows are installed the louvre, and the louvre is equidistant range at the top and the bottom of bellows.
Preferably, the both sides of filter screen all are provided with the fixture block, the inside of bellows is provided with the draw-in groove, filter screen and bellows constitute the block structure.
Preferably, the outer side wall of the mounting screw is uniformly provided with external threads, the inner side wall of the support is uniformly provided with internal threads matched with the external threads, and the mounting screw is in threaded connection with the support.
Preferably, the outer side wall of the mounting screw is uniformly provided with external threads, the inner side wall of the support is uniformly provided with internal threads matched with the external threads, and the mounting screw is in threaded connection with the support.
Preferably, the torsion spring is spiral in shape, and the torsion spring is elastically connected with the rotating shaft.
Compared with the prior art, the invention has the beneficial effects that: the remote waterproof intelligent electronic remote control doorbell device and the control system not only achieve the purpose that the electronic remote control doorbell device and the control system are convenient to prevent collision, achieve the purpose that the electronic remote control doorbell device and the control system are convenient to prevent buttons from being touched by mistake, but also achieve the purpose that the electronic remote control doorbell device and the control system are convenient to dissipate heat;
(1) the telescopic rod is arranged on the outer side of the fixed block, the telescopic rod and the fixed block form a sliding structure, the telescopic rod can slide in the fixed block, the telescopic rod and the fixed block are connected through the anti-collision spring, when an object is impacted on the device, the protection plate can protect the device, the device is prevented from being directly impacted, meanwhile, the telescopic rod on one side of the protection plate can slide into the fixed block due to the impact on the protection plate, then the elastic force of the anti-collision spring can buffer the device and impact force, the connecting rod can stretch out and draw back, the connecting rod can prevent the anti-collision protection plate from deviating, and therefore the purpose that the electronic remote control;
(2) the rotating shaft is arranged on the inner side of the fixing plate, the rotating shaft on the inner side of the fixing plate can rotate, the elasticity of the torsion spring can drive the rotating shaft to rotate, the rotating shaft can drive the cover body to rotate through the connecting plate, the cover body can be buckled at the top end of the control plate to prevent the control plate from being mistakenly touched, when the control plate needs to be used, the cover body can be pulled open to use the control plate, and after the control plate is used, the cover body can be buckled at the top end of the control plate due to the elasticity of the torsion spring, so that the aim of preventing the button from being mistakenly touched by an;
(3) through the internally mounted at bellows there is the fan, the fan work will be with the outside air through the inside that the louvre sucked bellows, then the fan blows in the inside of box with the inside air of bellows again, dispels the heat to the inside of box, prevents that the inside high temperature of box, and the filter that can pass through the filter screen that the fan blew off prevents that external dust from getting into the inside of box to this reaches the radiating purpose of being convenient for of electron remote control doorbell device and control system.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic top cross-sectional view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is an enlarged partial cross-sectional view taken at A in FIG. 1 according to the present invention;
FIG. 5 is a side view partially cross-sectional structure of the heat dissipation mechanism of the present invention;
fig. 6 is a schematic top view of a partial cross-sectional structure of the protection structure of the present invention.
In the figure: 1. a box body; 2. an anti-collision structure; 201. a fixed block; 202. a telescopic rod; 203. a protection plate; 204. a connecting rod; 205. an anti-collision spring; 3. a support; 4. a support leg; 5. a heat dissipation mechanism; 501. an air box; 502. a fan; 503. heat dissipation holes; 504. filtering with a screen; 6. a main board; 7. mounting screws; 8. a protective structure; 801. a fixing plate; 802. a rotating shaft; 803. a torsion spring; 804. a connecting plate; 805. a cover body; 9. an indicator light; 10. a control module; 11. an information processing module; 12. and a control panel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments 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.
Referring to fig. 1-6, an embodiment of the present invention is shown: a remote waterproof intelligent electronic remote control doorbell device and a control system comprise a box body 1, a support 3, support legs 4, a mainboard 6 and an indicator lamp 9, wherein the support legs 4 are arranged on two sides of the bottom end of the box body 1, a heat dissipation mechanism 5 is arranged in the middle of the bottom end of the box body 1, the heat dissipation mechanism 5 comprises an air box 501, a fan 502, heat dissipation holes 503 and a filter screen 504, the air box 501 is arranged at the bottom end of the box body 1, the heat dissipation holes 503 are arranged at the top end and the bottom end of the air box 501, and the heat dissipation holes 503 are arranged at equal intervals at the top;
a fan 502 is installed inside the air box 501, the model of the fan 502 can be TA12025, a filter screen 504 is installed at the top end inside the air box 501, clamping blocks are arranged on two sides of the filter screen 504, a clamping groove is formed inside the air box 501, and the filter screen 504 and the air box 501 form a clamping structure;
specifically, when the structure is used, firstly, the fan 502 works to suck outside air into the air box 501 through the heat radiation holes 503, then the fan 502 blows the air in the air box 501 into the box body 1 to radiate the heat in the box body 1, so as to prevent the temperature in the box body 1 from being too high, and the air blown out by the fan 502 can be filtered by the filter screen 504 to prevent outside dust from entering the box body 1;
the anti-collision structure 2 is mounted on the outer side of the box body 1, the anti-collision structure 2 comprises a fixing block 201, a telescopic rod 202, a protection plate 203, a connecting rod 204 and an anti-collision spring 205, the fixing block 201 is mounted on the outer side of the box body 1, a sliding groove is formed in the fixing block 201, pulleys are arranged on two sides of the telescopic rod 202, and the fixing block 201 and the telescopic rod 202 form a sliding structure;
the outer side of the fixing block 201 is provided with an expansion link 202, one end of the expansion link 202 is provided with an anti-collision spring 205, the outer side of the expansion link 202 is provided with a protection plate 203, the inner side of the protection plate 203 is provided with a connecting rod 204, and the connecting rods 204 are symmetrically distributed about the central axis of the protection plate 203;
specifically, when the structure is used, firstly, the telescopic rod 202 and the fixed block 201 form a sliding structure, the telescopic rod 202 can slide in the fixed block 201, the telescopic rod 202 and the fixed block 201 are connected through the anti-collision spring 205, when an object is impacted on the device, the protection plate 203 can protect the device, the device is prevented from being directly impacted, meanwhile, the telescopic rod 202 on one side of the protection plate 203 can slide into the fixed block 201 due to the impact on the protection plate 203, then the elastic force of the anti-collision spring 205 can buffer the device, the connecting rod 204 can stretch out and draw back, and the connecting rod 204 can prevent the anti-collision protection plate 203 from deviating;
an indicator light 9 is installed at one end of the top end of the box body 1, a control panel 12 is installed at the top end of the box body 1, a protective structure 8 is installed at the top end of the box body 1, the protective structure 8 comprises a fixing plate 801, a rotating shaft 802, a torsion spring 803, a connecting plate 804 and a cover body 805, the fixing plate 801 is installed at the top end of the box body 1, the rotating shaft 802 is installed inside the fixing plate 801, the torsion spring 803 is installed on the outer side of the rotating shaft 802, the torsion spring 803 is spiral in shape, and the torsion spring 803 and the rotating shaft;
one end of the rotating shaft 802 is provided with a connecting plate 804, and one end of the connecting plate 804 is provided with a cover 805;
specifically, when the structure is used, firstly, the rotating shaft 802 inside the fixing plate 801 can rotate, the elasticity of the torsion spring 803 can drive the rotating shaft 802 to rotate, the rotating shaft 802 rotates to drive the cover 805 to rotate through the connecting plate 804, the cover 805 rotates to be buckled at the top end of the control panel 12, so as to prevent the control panel 12 from being touched by mistake, when the control panel 12 needs to be used, the control panel 12 can be used by pulling the cover 805 open, and after the use is finished, the cover 805 can be buckled at the top end of the control panel 12 due to the elasticity of the torsion spring 803;
support 3 is installed to the inside bottom of box 1, and mainboard 6 is installed on the top of support 3, and control module 10 is installed to the intermediate position department on 6 tops of mainboard, and information processing module 11 is installed to the one end on 6 tops of mainboard, and mounting screw 7 is installed to the bottom of support 3, evenly is provided with the external screw thread on mounting screw 7's the lateral wall, evenly is provided with the internal thread that mutually supports with the external screw thread on support 3's the inside wall, and mounting screw 7 is threaded connection with support 3.
The working principle is as follows: when the device is used, the device is externally connected with a power supply, firstly, the telescopic rod 202 and the fixed block 201 form a sliding structure, the telescopic rod 202 can slide in the fixed block 201, the telescopic rod 202 and the fixed block 201 are connected through the anti-collision spring 205, when an object impact device exists, the protection plate 203 can protect the device, the device is prevented from being directly collided, meanwhile, the telescopic rod 202 on one side of the protection plate 203 can slide into the fixed block 201 due to the fact that the protection plate 203 is impacted, then the elastic force of the anti-collision spring 205 can buffer the device and is impacted, the connecting rod 204 can stretch out and draw back, and the connecting rod 204;
secondly, the rotating shaft 802 inside the fixing plate 801 can rotate, the elasticity of the torsion spring 803 can drive the rotating shaft 802 to rotate, the rotating shaft 802 rotates to drive the cover 805 to rotate through the connecting plate 804, the cover 805 rotates to be buckled at the top end of the control panel 12, the control panel 12 is prevented from being touched by mistake, when the control panel 12 needs to be used, the cover 805 is pulled open to be used for the control panel 12, and the cover 805 is buckled at the top end of the control panel 12 due to the elasticity of the torsion spring 803 after the use is finished;
finally, the fan 502 will suck the outside air into the inside of the bellows 501 through the heat dissipation holes 503 when working, then the fan 502 blows the inside air of the bellows 501 into the inside of the box 1 again, the inside of the box 1 is cooled, the temperature inside the box 1 is prevented from being too high, the air blown out by the fan 502 can pass through the filtering of the filter screen 504, and the outside dust is prevented from entering the inside of the box 1.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The utility model provides a remote waterproof intelligent electronic remote control doorbell device and control system, includes box (1), support (3), stabilizer blade (4), mainboard (6) and pilot lamp (9), its characterized in that: the anti-collision box is characterized in that supporting legs (4) are installed on two sides of the bottom end of the box body (1), a heat dissipation mechanism (5) is installed at the middle position of the bottom end of the box body (1), an anti-collision structure (2) is installed on the outer side of the box body (1), the anti-collision structure (2) comprises a fixing block (201), a telescopic rod (202), a protection plate (203), a connecting rod (204) and an anti-collision spring (205), the fixing block (201) is installed on the outer side of the box body (1), the telescopic rod (202) is installed on the outer side of the fixing block (201), the anti-collision spring (205) is installed at one end of the telescopic rod (202), the protection plate (203) is installed on the outer side of the telescopic rod (202), an indicator lamp (9) is installed at one end of the top end of the box, support (3) are installed to the inside bottom of box (1), and install mainboard (6) on the top of support (3), control module (10) are installed to the intermediate position department on mainboard (6) top, information processing module (11) are installed to the one end on mainboard (6) top, installation screw (7) are installed to the bottom of support (3).
2. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 1, characterized in that: the inside of fixed block (201) is provided with the spout, the both sides of telescopic link (202) all are provided with the pulley, fixed block (201) and telescopic link (202) constitute sliding structure.
3. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 1, characterized in that: connecting rods (204) are installed on the inner sides of the protection plates (203), and the connecting rods (204) are symmetrically distributed about the central axis of the protection plates (203).
4. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 1, characterized in that: heat dissipation mechanism (5) are including bellows (501), fan (502), louvre (503) and filter screen (504), the bottom at box (1) is installed in bellows (501), the internally mounted of bellows (501) has fan (502), filter screen (504) are installed on the inside top of bellows (501).
5. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 4, characterized in that: heat dissipation holes (503) are installed at the top end and the bottom end of the air box (501), and the heat dissipation holes (503) are arranged at equal intervals at the top end and the bottom end of the air box (501).
6. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 4, characterized in that: the both sides of filter screen (504) all are provided with the fixture block, the inside of bellows (501) is provided with the draw-in groove, filter screen (504) and bellows (501) constitute the block structure.
7. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 1, characterized in that: the mounting structure is characterized in that external threads are uniformly arranged on the outer side wall of the mounting screw (7), internal threads matched with the external threads are uniformly arranged on the inner side wall of the support (3), and the mounting screw (7) is in threaded connection with the support (3).
8. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 1, characterized in that: protective structure (8) are including fixed plate (801), pivot (802), torsion spring (803), connecting plate (804) and lid (805), the top at box (1) is installed to fixed plate (801), the internally mounted of fixed plate (801) has pivot (802), and torsion spring (803) are installed in the outside of pivot (802), connecting plate (804) are installed to the one end of pivot (802), lid (805) are installed to the one end of connecting plate (804).
9. The remote waterproof intelligent electronic remote control doorbell device and control system of claim 8, characterized in that: the torsion spring (803) is spiral in shape, and the torsion spring (803) is elastically connected with the rotating shaft (802).
CN202011257038.9A 2020-11-12 2020-11-12 Remote waterproof intelligent electronic remote control doorbell device and control system Pending CN112382023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011257038.9A CN112382023A (en) 2020-11-12 2020-11-12 Remote waterproof intelligent electronic remote control doorbell device and control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011257038.9A CN112382023A (en) 2020-11-12 2020-11-12 Remote waterproof intelligent electronic remote control doorbell device and control system

Publications (1)

Publication Number Publication Date
CN112382023A true CN112382023A (en) 2021-02-19

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Application Number Title Priority Date Filing Date
CN202011257038.9A Pending CN112382023A (en) 2020-11-12 2020-11-12 Remote waterproof intelligent electronic remote control doorbell device and control system

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CN (1) CN112382023A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114126285A (en) * 2021-11-12 2022-03-01 桂林电子科技大学 Picosecond-level pulse electron beam accurate measurement device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160284170A1 (en) * 2015-01-05 2016-09-29 SkyBell Technologies, Inc. Doorbell communication systems and methods
CN107799004A (en) * 2017-10-27 2018-03-13 惠州市合业智能科技有限公司 A kind of hotel intelligent doorplate and system
CN108887891A (en) * 2018-07-24 2018-11-27 合肥爱玩动漫有限公司 A kind of adjustable height formula cartoon design workbench
CN208388173U (en) * 2017-07-28 2019-01-18 陈欣琰 Laboratory multifunctional management frame
CN210493332U (en) * 2019-05-20 2020-05-12 中天一维(天津)科技有限公司 Fingerprint filing cabinet with anticollision function
CN211456780U (en) * 2020-04-13 2020-09-08 宋方正 Electric power facility false-collision prevention alarm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160284170A1 (en) * 2015-01-05 2016-09-29 SkyBell Technologies, Inc. Doorbell communication systems and methods
CN208388173U (en) * 2017-07-28 2019-01-18 陈欣琰 Laboratory multifunctional management frame
CN107799004A (en) * 2017-10-27 2018-03-13 惠州市合业智能科技有限公司 A kind of hotel intelligent doorplate and system
CN108887891A (en) * 2018-07-24 2018-11-27 合肥爱玩动漫有限公司 A kind of adjustable height formula cartoon design workbench
CN210493332U (en) * 2019-05-20 2020-05-12 中天一维(天津)科技有限公司 Fingerprint filing cabinet with anticollision function
CN211456780U (en) * 2020-04-13 2020-09-08 宋方正 Electric power facility false-collision prevention alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114126285A (en) * 2021-11-12 2022-03-01 桂林电子科技大学 Picosecond-level pulse electron beam accurate measurement device

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Application publication date: 20210219

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