CN111553998A - Fingerprint attendance machine with dust removal function - Google Patents
Fingerprint attendance machine with dust removal function Download PDFInfo
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- CN111553998A CN111553998A CN202010333040.3A CN202010333040A CN111553998A CN 111553998 A CN111553998 A CN 111553998A CN 202010333040 A CN202010333040 A CN 202010333040A CN 111553998 A CN111553998 A CN 111553998A
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- Prior art keywords
- air
- dust removal
- attendance machine
- fingerprint
- pipe
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/10—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
- G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
Abstract
The invention relates to a fingerprint attendance machine with a dust removal function, which comprises a main body, a display screen, an identification window, a fingerprint identifier, a dust removal mechanism and a heat dissipation mechanism, wherein the dust removal mechanism comprises an air pumping cylinder, a sealing sleeve, a piston block, an elastic rope, a lifting rod, a communication pipe, an air bag, a second air pipe, a first check valve, two first air pipes and two second check valves, and the heat dissipation mechanism comprises an air pump, an electric valve, a first heat pipe and at least two second heat pipes.
Description
Technical Field
The invention relates to the field of attendance machines, in particular to a fingerprint attendance machine with a dust removal function.
Background
The fingerprint attendance machine realizes the integration of human, ground and time, removes attendance false, and saves unnecessary overtime expenses for companies. The management of the personnel attendance of the enterprise staff in a fair, reasonable, effective and scientific way is a real topic faced by each unit.
When prior art's fingerprint attendance machine used in the more workshop of dust, the dust dropped on the attendance machine, would reduce the precision of attendance machine discernment fingerprint, moreover, prior art's fingerprint attendance machine is when using, and the inside electron device of fingerprint attendance machine if the radiating effect is relatively poor, would influence the stability of fingerprint attendance machine work.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the fingerprint attendance machine with the dust removal function is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a fingerprint attendance machine with a dust removal function comprises a main body, a display screen, an identification window and a fingerprint identifier, wherein a cavity is formed in the main body, the display screen and the identification window are arranged on the main body, the fingerprint identifier is arranged in the identification window, the fingerprint attendance machine also comprises a dust removal mechanism and a heat dissipation mechanism, the dust removal mechanism and the heat dissipation mechanism are arranged in the main body, and the dust removal mechanism is connected with the fingerprint identifier;
the dust removal mechanism comprises an air pumping cylinder, a sealing sleeve, a piston block, an elastic rope, a lifting rod, a communicating pipe, an air bag, a second air pipe, a first one-way valve, two first air pipes and two second one-way valves, wherein the top end of the air pumping cylinder is fixedly connected with the bottom of the identification window, the sealing sleeve and the lifting rod are coaxially arranged with the air pumping cylinder, the sealing sleeve is fixedly connected with the top end of the air pumping cylinder, the lifting rod penetrates through the sealing sleeve, the lifting rod is connected with the sealing sleeve in a sliding and sealing mode, the piston block is arranged inside the air pumping cylinder, the piston block is connected with the air pumping cylinder in a sliding and sealing mode, the piston block is fixedly connected with a fingerprint identifier through the lifting rod, the air bag is fixedly connected with the inner wall of the bottom of the identification window, the fingerprint identifier is abutted against the air bag, the air bag is communicated with the top end of the air pumping cylinder through the communicating pipe, and one ends of the two first, the other ends of the two first gas pipes are communicated with the bottom end of the air pumping cylinder, the two second one-way valves are respectively connected with the two first gas pipes, the bottom end of the air pumping cylinder is communicated with the outside of the main body through the second gas pipes, the first one-way valves are connected with the second gas pipes, the inner wall of the top end of the air pumping cylinder is fixedly connected with the piston block through an elastic rope, and the elastic rope is in a stretching state;
the heat dissipation mechanism comprises an air pump, an electric valve, a first heat conduction pipe and at least two second heat conduction pipes, one end of the first heat conduction pipe is communicated with the outside of the main body, the air pump and the electric valve are arranged on the first heat conduction pipe, and the first heat conduction pipe is communicated with one first gas pipe through each second heat conduction pipe.
Preferably, in order to improve the automation degree of the attendance machine, the inside of the main body is provided with a PLC, and the display screen and the fingerprint recognizer are both electrically connected with the PLC.
Preferably, the first heat transfer pipe and the second heat transfer pipe are made of metallic copper in order to improve heat transfer efficiency of the first heat transfer pipe and the second heat transfer pipe.
Preferably, in order to further improve the heat transfer efficiency of the second heat transfer pipe, at least two fins are arranged in a row on the second heat transfer pipe.
Preferably, in order to improve the definition of the display screen, the display screen is a liquid crystal display screen.
Preferably, the body is coated with an anti-corrosive coating in order to extend the service life of the body.
Preferably, in order to improve the dustproof performance of the first heat conduction pipe and the second air pipe, the first heat conduction pipe and the second air pipe are both covered with dustproof nets.
Preferably, in order to improve the sealing performance between the sealing sleeve and the lifting rod, a sealing ring is arranged on the sealing sleeve, and the sealing sleeve is connected with the lifting rod in a sealing mode through the sealing ring.
Preferably, in order to improve the sealing performance between the pumping cylinder and the piston block, the inner wall of the pumping cylinder is coated with sealing grease.
Preferably, in order to improve the reliability of the work of the attendance machine, the number of the elastic ropes is two.
The fingerprint attendance machine with the dust removal function has the advantages that the dust on the fingerprint identifier can be removed through the dust removal mechanism, the fingerprint identification precision of the attendance machine is improved, compared with the existing dust removal mechanism, the dust removal mechanism can drive the fingerprint identifier to move through the air bag, the use convenience of the fingerprint identifier is improved, meanwhile, when the air bag abuts against the fingerprint identifier, the dustproof performance of the fingerprint identifier can be improved, in addition, the heat dissipation efficiency of the attendance machine is improved through the heat dissipation mechanism, the working stability of the attendance machine is improved, compared with the existing heat dissipation mechanism, the heat dissipation mechanism can heat fingers of users, and the identification precision of the attendance machine in a low-temperature environment is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a fingerprint attendance machine with a dust removal function, provided by the invention;
fig. 2 is a sectional view of the fingerprint attendance machine with a dust removal function of the invention;
FIG. 3 is a schematic structural diagram of a dust removal mechanism of the fingerprint attendance machine with the dust removal function;
FIG. 4 is a sectional view of a pumping cylinder of the fingerprint attendance machine with a dust removal function of the invention;
in the figure: 1. the portable electronic device comprises a display screen, 2 a main body, 3 a fingerprint recognizer, 4 an air bag, 5 a lifting rod, 6 an identification window, 7 a communicating pipe, 8 a first air conveying pipe, 9 a piston block, 10 an air pump, 11 an electric valve, 12 a first heat conducting pipe, 13 fins, 14 a second heat conducting pipe, 15 an elastic rope, 16 a second air conveying pipe, 17 a first one-way valve, 18 a sealing sleeve, 19 an air pumping cylinder, 20 a second one-way valve and 21 a sealing ring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a fingerprint attendance machine with a dust removal function comprises a main body 2, a display screen 1, an identification window 6 and a fingerprint identifier 3, wherein a cavity is arranged in the main body 2, the display screen 1 and the identification window 6 are both arranged on the main body 2, the fingerprint identifier 3 is arranged in the identification window 6, the fingerprint attendance machine also comprises a dust removal mechanism and a heat dissipation mechanism, the dust removal mechanism and the heat dissipation mechanism are both arranged in the main body 2, and the dust removal mechanism is connected with the fingerprint identifier 3;
the dust on the fingerprint identifier 3 can be removed through the dust removal mechanism, so that the fingerprint identification precision of the attendance machine is improved, and moreover, the heat dissipation efficiency of the attendance machine is improved through the heat dissipation mechanism, and the working stability of the attendance machine is improved;
as shown in fig. 3-4, the dust removing mechanism includes a pumping cylinder 19, a sealing sleeve 18, a piston block 9, an elastic rope 15, a lifting rod 5, a communicating pipe 7, an air bag 4, a second air pipe 16, a first one-way valve 17, two first air pipes 8 and two second one-way valves 20, the top end of the pumping cylinder 19 is fixedly connected with the bottom of the identification window 6, the sealing sleeve 18 and the lifting rod 5 are coaxially arranged with the pumping cylinder 19, the sealing sleeve 18 is fixedly connected with the top end of the pumping cylinder 19, the lifting rod 5 passes through the sealing sleeve 18, the lifting rod 5 is connected with the sealing sleeve 18 in a sliding and sealing manner, the piston block 9 is arranged inside the pumping cylinder 19, the piston block 9 is connected with the pumping cylinder 19 in a sliding and sealing manner, the piston block 9 is fixedly connected with the fingerprint identifier 3 through the lifting rod 5, the air bag 4 is fixedly connected with the inner wall of the bottom of the identification window 6, the fingerprint identifier 3 is abutted against the air bag 4, the air bag 4 is communicated with the top end of the air pumping cylinder 19 through the communicating pipe 7, one ends of the two first air conveying pipes 8 are communicated with two sides of the identification window 6 respectively, the other ends of the two first air conveying pipes 8 are communicated with the bottom end of the air pumping cylinder 19 respectively, the two second one-way valves 20 are connected with the two first air conveying pipes 8 respectively, the bottom end of the air pumping cylinder 19 is communicated with the outside of the main body 2 through the second air conveying pipe 16, the first one-way valve 17 is connected with the second air conveying pipe 16, the inner wall of the top end of the air pumping cylinder 19 is fixedly connected with the piston block 9 through the elastic rope 15, and the elastic rope 15 is in a stretching state;
the stability of the lifting rod 5 is improved through the sealing sleeve 18, the stability of the fingerprint identifier 3 is improved, when a user needs to use the attendance machine, the user inserts a finger into the identification window 6, the air bag 4 is extruded through the finger, air in the air bag 4 is sent into the top end of the air pumping cylinder 19 through the communicating pipe 7, the piston block 9 is driven by air pressure to move downwards, the fingerprint identifier 3 descends, the finger of the user can be abutted against the fingerprint identifier 3, then the fingerprint identifier 3 is pressed by the finger of the user to continuously descend, the first check valve 17 is closed, the second check valve 20 is opened, air in the air pumping cylinder 19 is sprayed onto the fingerprint identifier 3 and the finger from the first air conveying pipe 8 through the piston block 9, the dust removal function of the fingerprint identifier 3 and the finger is realized, the fingerprint identification precision of the attendance machine is improved, after the identification is completed, when a user takes out the finger, the piston block 9 is pulled to rise through the elastic rope 15, the air in the top end of the air pumping cylinder 19 is sent into the air bag 4 through the communicating pipe 7 under the action of the piston block 9, so that the air bag 4 is expanded, the air bag 4 covers the fingerprint identifier 3, the dustproof performance of the fingerprint identifier 3 is improved, meanwhile, the second one-way valve 20 is closed, the first one-way valve 17 is opened, so that the external air can be pumped into the air pumping cylinder 19 through the second air pipe 16, and the air can circularly flow in the second air pipe 16, the air pumping cylinder 19 and the first air pipe 8;
as shown in fig. 2, the heat dissipation mechanism includes an air pump 10, an electric valve 11, a first heat pipe 12 and at least two second heat pipes 14, one end of the first heat pipe 12 is communicated with the outside of the main body 2, the air pump 10 and the electric valve 11 are both disposed on the first heat pipe 12, and the first heat pipe 12 is communicated with one of the first air pipes 8 through each of the second heat pipes 14;
the opening and closing of the first heat conduction pipe 12 are realized through the electric valve 11, the air inside the first heat conduction pipe 12 and each second heat conduction pipe 14 is driven by the air pump 10 to be sent into the identification window 6 through the first air pipe 8, the heat inside the main body 2 is absorbed through the first heat conduction pipe 12 and each second heat conduction pipe 14, then the heat is dissipated from the first air pipe 8 through air flow, the heat dissipation efficiency of the attendance machine is improved, the reliability of the work of the attendance machine is improved, meanwhile, dust on the fingerprint identifier 3 can be removed through the air flow, the identification precision of the fingerprint identifier 3 is improved, meanwhile, the air flow is heated through the heat, the fingers of a user are heated through hot air flow, and the identification precision of the attendance machine in a low-temperature environment is improved.
Preferably, in order to improve the automation degree of the attendance machine, a PLC is arranged inside the main body 2, and the display screen 1 and the fingerprint identifier 3 are both electrically connected with the PLC;
the PLC programmable logic controller adopts a programmable memory for storing program therein, executing instructions facing users such as logic operation, sequence control, timing, counting and arithmetic operation, and controlling various types of machinery or production processes through digital or analog input/output, and is essentially a computer special for industrial control, the hardware structure of the PLC programmable logic controller is basically the same as that of a microcomputer, the PLC programmable logic controller is generally used for processing data and receiving and outputting instructions, the PLC programmable logic controller is used for realizing central control, the operation of the attendance machine is controlled through the PLC programmable logic controller, and meanwhile, the working state of the attendance machine can be displayed through a display screen, so that the automation degree of the attendance machine is improved.
Preferably, in order to improve the heat conduction efficiency of the first heat transfer pipe 12 and the second heat transfer pipe 14, the first heat transfer pipe 12 and the second heat transfer pipe 14 are made of metallic copper;
because metal copper has better heat conduction efficiency, the heat conduction efficiency of the first heat conduction pipe 12 and the second heat conduction pipe 14 is improved, and the heat radiation efficiency of the attendance machine is improved.
Preferably, in order to further improve the heat conduction efficiency of the second heat transfer pipe 14, at least two fins 13 are arranged on the second heat transfer pipe 14;
the heat conducting area of the second heat conducting pipe 14 is increased through the fins 13, the heat conducting efficiency of the second heat conducting pipe 14 is improved, and the heat radiating efficiency of the second heat conducting pipe 14 on the attendance machine is improved.
Preferably, in order to improve the display definition of the display panel 1, the display panel 1 is a liquid crystal display panel.
Preferably, in order to extend the service life of the main body 2, the main body 2 is coated with an anti-corrosion coating;
the corrosion speed of the main body 2 is slowed down through the anti-corrosion coating, and the service life of the main body 2 is prolonged.
Preferably, in order to improve the dustproof performance of the first heat pipe 12 and the second heat pipe 16, the first heat pipe 12 and the second heat pipe 16 are both covered with a dustproof net;
the probability of dust entering the first heat pipe 12 and the second air pipe 16 is reduced through the dustproof net, and the dustproof performance of the first heat pipe 12 and the second air pipe 16 is improved.
Preferably, in order to improve the sealing performance between the sealing sleeve 18 and the lifting rod 5, a sealing ring 21 is arranged on the sealing sleeve 18, and the sealing sleeve 18 is connected with the lifting rod 5 in a sealing manner through the sealing ring 21;
the clearance between the sealing sleeve 18 and the lifting rod 5 is reduced by the sealing ring 21, and the sealing performance between the sealing sleeve 18 and the lifting rod 5 is improved.
Preferably, in order to improve the sealing performance between the pumping cylinder 19 and the piston block 9, the inner wall of the pumping cylinder 19 is coated with sealing grease;
the clearance between the air extracting cylinder 19 and the piston block 9 is reduced through the sealing grease, and the sealing performance between the air extracting cylinder 19 and the piston block 9 is improved.
Preferably, in order to improve the reliability of the work of the attendance machine, the number of the elastic ropes 15 is two;
through forming mutual redundant setting between two elastic rope 15, when making one of them elastic rope 15 break down, another elastic rope 15 can support attendance machine normal operating, has improved attendance machine reliability of working.
When a user needs to use the attendance machine, the user inserts a finger into the identification window 6, the air bag 4 is extruded by the finger, the air in the air bag 4 is sent into the top end of the air pumping cylinder 19 through the communicating pipe 7, the piston block 9 is driven to move downwards through air pressure, the fingerprint identifier 3 descends, the finger of the user can be abutted against the fingerprint identifier 3, then the fingerprint identifier 3 is pressed by the finger of the user to descend continuously, the first check valve 17 is closed, the second check valve 20 is opened, the air in the air pumping cylinder 19 is sprayed onto the fingerprint identifier 3 and the finger from the first air pipe 8 through the piston block 9, the dust removal function of the fingerprint identifier 3 and the finger is realized, the accuracy of identifying fingerprints by the attendance machine is improved, the air in the first heat conduction pipe 12 and each second heat conduction pipe 14 is driven by the air pump 10 to be sent into the identification window 6 through the first air pipe 8, absorb the inside heat of main part 2 through first heat pipe 12 and each second heat pipe 14, later distribute the heat from first gas-supply pipe 8 through the air current, improved the radiating efficiency to the attendance machine, improved the reliability of attendance machine work.
Compared with the prior art, in this fingerprint attendance machine with dust removal function, can clear away the dust on the fingerprint identification ware 3 through dust removal mechanism, the precision of attendance machine discernment fingerprint has been improved, compare with current dust removal mechanism, this dust removal mechanism not only can drive 3 removals of fingerprint identification ware through gasbag 4, the convenient degree of 3 uses of fingerprint identification ware has been improved, support when fingerprint identification ware 3 at gasbag 4 simultaneously, can improve the dustproof performance of fingerprint identification ware 3, moreover, the radiating efficiency of attendance machine has been improved through radiating mechanism, the stability of attendance machine work has been improved, compare with current radiating mechanism, this radiating mechanism can also heat user's finger, the precision of attendance machine discernment in low temperature environment has been improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A fingerprint attendance machine with a dust removal function comprises a main body (2), a display screen (1), an identification window (6) and a fingerprint identifier (3), wherein a cavity is formed in the main body (2), the display screen (1) and the identification window (6) are arranged on the main body (2), and the fingerprint identifier (3) is arranged in the identification window (6), and is characterized by further comprising a dust removal mechanism and a heat dissipation mechanism, wherein the dust removal mechanism and the heat dissipation mechanism are both arranged in the main body (2), and the dust removal mechanism is connected with the fingerprint identifier (3);
the dust removal mechanism comprises a pumping cylinder (19), a sealing sleeve (18), a piston block (9), an elastic rope (15), a lifting rod (5), a communicating pipe (7), an air bag (4), a second air pipe (16), a first one-way valve (17), two first air pipes (8) and two second one-way valves (20), the top end of the pumping cylinder (19) is fixedly connected with the bottom of the identification window (6), the sealing sleeve (18) and the lifting rod (5) are coaxially arranged with the pumping cylinder (19), the sealing sleeve (18) is fixedly connected with the top end of the pumping cylinder (19), the lifting rod (5) penetrates through the sealing sleeve (18), the lifting rod (5) is in sliding and sealing connection with the sealing sleeve (18), the piston block (9) is arranged inside the pumping cylinder (19), the piston block (9) is in sliding and sealing connection with the pumping cylinder (19), the piston block (9) is fixedly connected with the fingerprint identifier (3) through the lifting rod (5), the air bag (4) is fixedly connected with the inner wall of the bottom of the identification window (6), the fingerprint identifier (3) is abutted against the air bag (4), the air bag (4) is communicated with the top end of the air pumping cylinder (19) through a communicating pipe (7), one ends of two first air conveying pipes (8) are communicated with the two sides of the identification window (6) respectively, the other ends of the two first air conveying pipes (8) are communicated with the bottom end of the air pumping cylinder (19), two second one-way valves (20) are connected with the two first air conveying pipes (8) respectively, the bottom end of the air pumping cylinder (19) is communicated with the outer part of the main body (2) through the second air conveying pipes (16), the first one-way valves (17) are connected with the second air conveying pipes (16), the inner wall of the top end of the air pumping cylinder (19) is fixedly connected with the piston block (9) through an elastic rope (15), the elastic rope (15) is in a stretched state;
the heat dissipation mechanism comprises an air pump (10), an electric valve (11), a first heat conduction pipe (12) and at least two second heat conduction pipes (14), one end of the first heat conduction pipe (12) is communicated with the outside of the main body (2), the air pump (10) and the electric valve (11) are both arranged on the first heat conduction pipe (12), and the first heat conduction pipe (12) is communicated with one first air delivery pipe (8) through each second heat conduction pipe (14).
2. The fingerprint attendance machine with the dust removal function according to claim 1, wherein a PLC is arranged inside the main body (2), and the display screen (1) and the fingerprint identifier (3) are electrically connected with the PLC.
3. The fingerprint attendance machine with the dust removal function of claim 1, wherein the first heat conduction pipe (12) and the second heat conduction pipe (14) are made of metal copper.
4. The fingerprint attendance machine with dust removal function according to claim 1, characterized in that at least two fins (13) are arranged on the second heat conduction pipe (14).
5. The fingerprint attendance machine with the dust removal function of claim 1, wherein the display screen (1) is a liquid crystal display screen.
6. The fingerprint attendance machine with the dust removal function according to claim 1, characterized in that the main body (2) is coated with an anticorrosive coating.
7. The fingerprint attendance machine with the dust removal function according to claim 1, wherein the first heat conduction pipe (12) and the second air delivery pipe (16) are covered with dust screens.
8. The fingerprint attendance machine with the dust removal function according to claim 1, wherein the sealing sleeve (18) is provided with a sealing ring (21), and the sealing sleeve (18) is connected with the lifting rod (5) in a sealing manner through the sealing ring (21).
9. The fingerprint attendance machine with the dust removal function according to claim 1, wherein the inner wall of the air suction cylinder (19) is coated with sealing grease.
10. The fingerprint attendance machine with the dust removal function according to claim 1, wherein the number of the elastic ropes (15) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333040.3A CN111553998A (en) | 2020-04-24 | 2020-04-24 | Fingerprint attendance machine with dust removal function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333040.3A CN111553998A (en) | 2020-04-24 | 2020-04-24 | Fingerprint attendance machine with dust removal function |
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| CN111553998A true CN111553998A (en) | 2020-08-18 |
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| CN202010333040.3A Withdrawn CN111553998A (en) | 2020-04-24 | 2020-04-24 | Fingerprint attendance machine with dust removal function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112987409A (en) * | 2021-04-08 | 2021-06-18 | 深圳市希恩凯电子有限公司 | Double-sided LCD liquid crystal display sharing backlight module |
| CN113490328A (en) * | 2021-07-07 | 2021-10-08 | 深圳市合顺泰科技有限公司 | Self-induction fingerprint identification module and flexible printed circuit board |
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| CN110580422A (en) * | 2019-09-09 | 2019-12-17 | 南京思达捷信息科技有限公司 | RFID handheld terminal device |
| CN110956150A (en) * | 2019-12-10 | 2020-04-03 | 深圳市晓控通信科技有限公司 | Fingerprint identification equipment with good heat dissipation effect based on block chain technology |
Cited By (2)
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| CN112987409A (en) * | 2021-04-08 | 2021-06-18 | 深圳市希恩凯电子有限公司 | Double-sided LCD liquid crystal display sharing backlight module |
| CN113490328A (en) * | 2021-07-07 | 2021-10-08 | 深圳市合顺泰科技有限公司 | Self-induction fingerprint identification module and flexible printed circuit board |
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Application publication date: 20200818 |