CN202089146U - Intelligent dual-purpose brake drum remote control electric lock device - Google Patents

Intelligent dual-purpose brake drum remote control electric lock device Download PDF

Info

Publication number
CN202089146U
CN202089146U CN2011201843567U CN201120184356U CN202089146U CN 202089146 U CN202089146 U CN 202089146U CN 2011201843567 U CN2011201843567 U CN 2011201843567U CN 201120184356 U CN201120184356 U CN 201120184356U CN 202089146 U CN202089146 U CN 202089146U
Authority
CN
China
Prior art keywords
latch
iron core
remote control
control electric
locking 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.)
Expired - Fee Related
Application number
CN2011201843567U
Other languages
Chinese (zh)
Inventor
孙木楚
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.)
Shenzhen Tailg Electric Vehicle Co., Ltd.
Original Assignee
SHENZHEN SHENLING CAR CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN SHENLING CAR CO Ltd filed Critical SHENZHEN SHENLING CAR CO Ltd
Priority to CN2011201843567U priority Critical patent/CN202089146U/en
Application granted granted Critical
Publication of CN202089146U publication Critical patent/CN202089146U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Braking Arrangements (AREA)

Abstract

An intelligent dual-purpose brake drum remote control electric lock device is used for locking the brake drum (1) and a side cover (2) of a motor. The intelligent dual-purpose brake drum remote control electric lock device comprises a clamping groove (5), a plug (4) and an electronic lock (3). The plug (4) is inserted inside the clamping groove (5). The electronic lock (3) comprises an iron core (11) and a controller. The iron core (11) is used for preventing the plug (4) from separating from the clamping groove (5), and the controller controls the iron core (11) to move. A manual release mechanism is arranged on the plug (4). The lock between the iron core (11) and the plug (4) can be removed by rotating the manual release mechanism. A lock cover (19) fixed on the brake drum (1) and used for limiting the plug (4) to move axially is sleeved outside the plug (4). Compared with the prior art, the intelligent dual-purpose brake drum remote control electric lock device can be unlocked by hand or can be unlocked electrically, thereby being more convenient to use.

Description

Intelligence double purpose brake hubs remote control electric locking device
Technical field
The utility model relates to the electric accessory motor field, more particularly, relates to a kind of intelligent double purpose brake hubs remote control electric locking device.
Background technology
Existing battery-driven car is provided with the mechanical lock of locking motor limit lid for antitheft on the brake hubs of battery-driven car.When battery-driven car does not use, mechanical lock locking, the battery-driven car wheel can't rotate, and reaches theft-proof purpose.But there are many inconvenience in use in mechanical lock, for example when when using night, need just can find the position of key hole by external light source.In order to address this problem, the electric lorry device of release has appearred controlling with remote controller.But existing electric lorry device must guarantee as the power supply of electric lorry power supply sufficient electric power to be arranged when using, and electric lorry can't be opened when the power drain of power supply or remote controller are lost, and the releasing process of electric lorry can't manually be finished, and uses inconvenience.
The utility model content
The technical problems to be solved in the utility model is, can only provide a kind of intelligent double purpose brake hubs remote control electric locking device that can be manually opened by the defective of remote controller electric opening at existing brake hubs remote control electric locking device.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of intelligent double purpose brake hubs remote control electric locking device, be used for lock brake hub and motor limit lid, comprise draw-in groove, latch and electronic lock, described latch is plugged in the described draw-in groove, described electronic lock comprises and prevents that described latch breaks away from the iron core of described draw-in groove and the controller of the described iron core of control action, described latch is provided with hand-operating unlocking mechanism, can remove locking between described iron core and the described latch by rotating described hand-operating unlocking mechanism, described latch is arranged with the fixing locking closure on described brake hubs that limits its axial motion outward.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described hand-operating unlocking mechanism is the skewed slot that the outer wall of described latch caves inward and forms, and the side wall surface of at least one side of described skewed slot is the inclined-plane.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described latch is provided with bit-avoiding slot, and described bit-avoiding slot is the elongated slot that is provided with along described latch sense of motion.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described controller comprises remote controller, electrical control mechanism, power supply unit and electromagnet, described electrical control mechanism comprises the receiving element of the signal that the described remote controller of reception sends and described signal is converted to the processing unit of electric signal, described electromagnet is electrically connected with described processing unit, and described power supply unit is electrically connected with described processing unit.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described electromagnet is fixed on the support, described support is provided with the through hole that cooperates with described iron core, described iron core passes described throughhole portions and inserts in the described electromagnet, and described iron core is provided with and prevents that described iron core breaks away from the spacing boss of described support.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described support is provided with dividing plate, is arranged with first spring on the described iron core, and two legs of described first spring are against respectively on described boss and the described dividing plate.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, also be arranged with second spring on the described latch, an end of described second spring is fixed on the described locking closure, and the other end is fixed on the described latch.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described latch is provided with lockhole.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, the end face of described locking closure is positioned at moving axially on the path of described latch, and the end face of described locking closure is provided with and the corresponding eyelet of described lockhole.
In intelligent double purpose brake hubs remote control electric locking device described in the utility model, described latch comprises the lock core of lock pin and hollow, described lock pin inserts in the described lock core and by the 3rd spring and is connected with described lock core, described lock pin inserts in the described draw-in groove, and described hand-operating unlocking mechanism is arranged on the described lock core.
Implement intelligent double purpose brake hubs remote control electric locking device of the present utility model, have following beneficial effect: latch is rotating to be arranged in the brake hubs, and latch is provided with hand-operating unlocking mechanism, when the electric lorry device locks, iron core blocks latch, stops it to break away from draw-in groove.When the needs release, controller can be controlled the iron core motion breaks away from itself and latch, also can latch and iron core be broken away from by the rotation hand-operating unlocking mechanism, and dual mode can be realized release.Compared with prior art, the utility model intelligence double purpose brake hubs remote control electric locking device can be realized the dual mode release, uses convenient.Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model intelligence double purpose brake hubs remote control electric locking device embodiment;
Fig. 2 is the structural representation of brake hubs among Fig. 1;
Fig. 3 is the structural representation of motor limit lid among Fig. 1;
Fig. 4 is the structural representation of Fig. 1 middle controller;
The structural representation of electronic lock when Fig. 5 is intelligent double purpose brake hubs remote control electric locking device locking shown in Figure 1;
The structural representation of electronic lock when Fig. 6 is intelligent double purpose brake hubs remote control electric locking device release shown in Figure 1;
Fig. 7 is the structural representation of latch;
Fig. 8 is the structural representation of another angle of latch;
Fig. 9 is the part exploded perspective view of latch.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present utility model in detail.
As Fig. 1-shown in Figure 7, the utility model intelligence double purpose brake hubs remote control electric locking device is used for lock brake hub 1 and motor limit lid 2, comprises being arranged on the draw-in groove 5 on the motor limit lid 2 and being arranged on latch 4 and electronic lock 3 on the brake hubs 1.Latch 4 inserts in the draw-in groove 5, and motor limit lid 2 can't rotate, and electronic lock 3 is fixing with latch 4 chuckings, prevents that latch 4 breaks away from draw-in groove 5.Electronic lock 3 further comprises iron core 11 and controller, and iron core 11 cooperates chucking fixing with latch 4,11 actions of controller control iron core.Latch 4 is provided with the hand-operating unlocking mechanism that cooperates with iron core 11, when the electric lorry device locks, and when promptly latch 4 inserts in the draw-in groove 5, iron core 11 and latch 4 lockings.Hand-operating unlocking mechanism in the present embodiment is the skewed slot 10 that the outer wall of latch 4 caves inward and forms, when iron core 11 inserts in this skewed slot 10, and iron core 11 and latch 4 lockings.The side wall surface of at least one sidewall of skewed slot 10 is the inclined-plane, and when latch 4 turned an angle, iron core 11 broke away from skewed slot 10, and iron core 10 unlocks with latch 11.Be understandable that hand-operating unlocking mechanism among the present invention is not limited to the skewed slot 10 in the present embodiment, it also can be flange or block, as long as can be blocked by iron core 11, and when latch 4 rotates, can break away from iron core 11 and get final product.Also be arranged with locking closure 19 on the latch 4, locking closure 19 is fixed on the brake hubs 1, an end opening of locking closure 19, and latch 4 inserts in the locking closure 19 from the open end of locking closure 19.Because locking closure 19 has only an end opening, the end face of locking closure 19 is positioned at moving axially on the path of latch 4, and locking closure 19 can limit the axial movement of latch 4, and latch 7 can not break away from brake hubs 1.Further, also be provided with bit-avoiding slot 12 on the latch 4, bit-avoiding slot 12 is the elongated slot that is provided with along latch 4 sense of motions.During release, latch 4 rotates, and bit-avoiding slot 12 turns to the position relative with iron core 11 thereupon, and bit-avoiding slot 12 can not blocked by iron core 11, and latch 4 can normally move, and bit-avoiding slot 12 is set can guarantees further that iron core 11 can not produce scratching with the outer wall of latch 4.Also be provided with lockhole 17 on the latch 4, be provided with eyelet accordingly on locking closure 19 end faces, can insert key and rotate latch 4.When the snap-fit between needs releasing iron core 11 and the latch 4, can realize by dual mode.First kind is to move by controller control iron core 11, makes the hand-operating unlocking mechanism on its disengaging latch 4; Second kind is by rotation latch 4, and hand-operating unlocking mechanism is rotated with latch 4, and until breaking away from iron core 11, dual mode can both be removed the locking between iron core 11 and the latch 4.
Controller comprises remote controller 20, electrical control mechanism, power supply unit 9 and electromagnet 8.Electrical control mechanism further comprises receiving element 6 and processing unit 7.Receiving element 6 receives the signal that remote controllers 20 send, and the signal that remote controller 20 sends can be wireless signals such as infrared, bluetooth.Processing unit 7 is converted to electric signal with this signal.Processing unit 7 is electrically connected with electromagnet 8, and electric signal is an instantaneous current, can produce the electromagnetic force that attracts iron core 11 and move it after electromagnet 8 energisings.Power supply unit 9 is electrically connected with processing unit 7, is the electrical control mechanism power supply.Electromagnet 8 is fixed on the support 13, and support 13 is provided with the through hole that iron core 11 is installed, and iron core 11 passes this throughhole portions and inserts in the electromagnet 8.One end of iron core 11 is positioned at electromagnet 8 inside, and the other end stretches out outside the support 13.Iron core 11 is provided with spacing boss 14, and boss 14 can be blocked by through hole, can prevent that iron core 11 breaks away from support 13.Also be provided with dividing plate 15 on support 13, two legs that are arranged with first spring, 16, the first springs 16 on the iron core 11 are against respectively on boss 14 and the dividing plate 15.Iron core 11 is provided with a skewback with latch 4 cooperative end part, when latch 4 when draw-in groove 5 directions move, can push this skewback, make whole iron core 11 to the motion of electromagnet 8 directions, avoid latch 4.An end that also is arranged with second spring, 18, the second springs 18 on the latch 4 is fixed on the locking closure 19, and the other end is fixed on the latch 4.
Below the working process of the utility model intelligence double purpose brake hubs remote control electric locking device is simply explained.
When the electric lorry device is locked, firmly act on the latch 4, latch 4 is moved to draw-in groove 5 directions, second spring 18 is stretched, and latch 4 inserts in the draw-in groove 5.The outer wall of while latch 4 contacts with the skewback on the iron core 11, and extruding iron core 11 makes it move to electromagnet 8 directions, and first spring 16 is compressed.When the skewed slot on the latch 4 10 motion during as for the relative position of iron core 11, latch 4 can not continue to push iron core 11, and iron core 11 moves to latch 4 directions under the effect of first spring 16, and iron core 11 inserts in the skewed slots 10, with latch 4 snap-fit.Because latch 4 is tightened by iron core 11, so even remove external force, latch 4 can not leave draw-in groove 5 because of the pulling force of second spring 18 yet, latch 4 is inserted in the draw-in groove 5, finishes locking.
During release, remote controller 20 sends signal, receiving element 6 received signals, and processing unit 7 is converted to electric signal with this signal, and electromagnet 8 energisings produce the electromagnetic force that attracts iron core 11.Iron core 11 moves to the direction away from latch 4 under the effect of electromagnetic force, breaks away from skewed slot 10.Because iron core 11 breaks away from skewed slots 10, latch 4 can not blocked by iron core 11, thus latch 4 under the effect of second spring 18 to moving away from draw-in groove 5 directions, until breaking away from draw-in groove 5, release is finished.Above-mentioned releasing process can be finished in moment, so the current"on"time of electromagnet 8 is also very short, and when electromagnet 8 energisings finished, iron core 11 resetted under the effect of first spring 16, gets back to initial position.
Except 20 releases that use a teleswitch, can also adopt the mechanical mode release.During release, rotate latch 4, make bit-avoiding slot 12 turn to the position relative with iron core 11, this moment, latch 4 can not blocked by the skewed slot on the iron core 11 10, and under the effect of second spring 18, latch 4 moves to the direction away from draw-in groove 5, until breaking away from draw-in groove 5, release is finished, because be provided with bit-avoiding slot 12, so latch 4 can not produce scratching with iron core 11 in the process of resilience.
Preferably, as Fig. 8-shown in Figure 9, above-mentioned latch 4 comprises the lock core 401 of lock pin 402 and hollow, and lock pin 402 inserts in the lock cores 401 and by the 3rd springs 403 and is connected with lock core 401.Lock pin 402 can insert in the draw-in groove 5, and hand-operating unlocking mechanism and lockhole 17 are arranged on the lock core 401.When the electric lorry device is locked, firmly act on the lock core 401, lock core 401 and lock pin 402 are moved to draw-in groove 5 directions together.But 402 pairs of non-draw-in groove position on motor limit lid 2 and lock pins are seasonable, lock pin 402 can't insert in the draw-in groove 5, this moment, lock core 401 can continue motion, and the hand-operating unlocking mechanism on lock core 401 is blocked by iron core 11, and the 3rd spring 403 is compressed in this process.After removing the external force effect, lock core 401 is blocked by iron core 11 can't resilience, and motor limit lid 2 turns an angle draw-in groove 5 is turned to and lock pin 402 cooresponding positions, and this moment, lock pin 402 can insert in the draw-in groove 5, finishes locking under the effect of the 3rd spring 403.During the electric lorry release, may have stuck position of moment, lock pin 402 can't break away from draw-in groove 5 smoothly, but lock core 401 can be in the past moves away from the direction of draw-in groove 5, and hand-operating unlocking mechanism on the lock core 401 and iron core 11 break away from, and the 3rd spring 403 is stretched in this process.When motor limit lid 2 turns to non-stuck position, under the effect of the 3rd spring 403, can break away from draw-in groove 5 smoothly, finish release.
In conjunction with the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the present utility model.

Claims (10)

1. intelligent double purpose brake hubs remote control electric locking device, be used for lock brake hub (1) and motor limit lid (2), comprise draw-in groove (5), latch (4) and electronic lock (3), described latch (4) is plugged in the described draw-in groove (5), described electronic lock (3) comprise prevent described latch (4) break away from described draw-in groove (5) iron core (11) and control described iron core (11) action controller, it is characterized in that, described latch (4) is provided with hand-operating unlocking mechanism, can remove locking between described iron core (11) and the described latch (4) by rotating described hand-operating unlocking mechanism, described latch (4) is outer be arranged with limit its axial motion go up fixing locking closure (19) in described brake hubs (1).
2. intelligent double purpose brake hubs remote control electric locking device according to claim 1, it is characterized in that, described hand-operating unlocking mechanism is the skewed slot (10) that the outer wall of described latch (4) caves inward and forms, and the side wall surface of at least one side of described skewed slot (10) is the inclined-plane.
3. intelligent double purpose brake hubs remote control electric locking device according to claim 2 is characterized in that described latch (4) is provided with bit-avoiding slot (12), and described bit-avoiding slot (12) is the elongated slot that is provided with along described latch (4) sense of motion.
4. intelligent double purpose brake hubs remote control electric locking device according to claim 1, it is characterized in that, described controller comprises remote controller (20), electrical control mechanism, power supply unit (9) and electromagnet (8), described electrical control mechanism comprises the receiving element (6) of the signal that the described remote controller of reception (20) sends and described signal is converted to the processing unit (7) of electric signal, described electromagnet (8) is electrically connected with described processing unit (7), and described power supply unit (9) is electrically connected with described processing unit (7).
5. intelligent double purpose brake hubs remote control electric locking device according to claim 4, it is characterized in that, described electromagnet (8) is fixed on the support (13), described support (13) is provided with the through hole that cooperates with described iron core (11), described iron core (11) passes described throughhole portions and inserts in the described electromagnet (8), and described iron core (11) is provided with and prevents that described iron core (11) breaks away from the spacing boss (14) of described support (13).
6. intelligent double purpose brake hubs remote control electric locking device according to claim 5, it is characterized in that, described support (13) is provided with dividing plate (15), be arranged with first spring (16) on the described iron core (11), two legs of described first spring (16) are against respectively on described boss (14) and the described dividing plate (15).
7. intelligent double purpose brake hubs remote control electric locking device according to claim 1, it is characterized in that, also be arranged with second spring (18) on the described latch (4), an end of described second spring (18) is fixed on the described locking closure (19), and the other end is fixed on the described latch (4).
8. according to any described intelligent double purpose brake hubs remote control electric locking device of claim 1, it is characterized in that described latch (4) is provided with lockhole (17).
9. intelligent double purpose brake hubs remote control electric locking device according to claim 8, it is characterized in that, the end face of described locking closure (19) is positioned at moving axially on the path of described latch (4), and the end face of described locking closure (19) is provided with and the corresponding eyelet of described lockhole (17).
10. according to any described intelligent double purpose brake hubs remote control electric locking device of claim 1-9, it is characterized in that, described latch (4) comprises the lock core (401) of lock pin (402) and hollow, described lock pin (402) inserts in the described lock core (401) and by the 3rd spring (403) and is connected with described lock core (401), described lock pin (402) inserts in the described draw-in groove (5), and described hand-operating unlocking mechanism is arranged on the described lock core (401).
CN2011201843567U 2011-06-02 2011-06-02 Intelligent dual-purpose brake drum remote control electric lock device Expired - Fee Related CN202089146U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201843567U CN202089146U (en) 2011-06-02 2011-06-02 Intelligent dual-purpose brake drum remote control electric lock device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201843567U CN202089146U (en) 2011-06-02 2011-06-02 Intelligent dual-purpose brake drum remote control electric lock device

Publications (1)

Publication Number Publication Date
CN202089146U true CN202089146U (en) 2011-12-28

Family

ID=45364232

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201843567U Expired - Fee Related CN202089146U (en) 2011-06-02 2011-06-02 Intelligent dual-purpose brake drum remote control electric lock device

Country Status (1)

Country Link
CN (1) CN202089146U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103276975A (en) * 2013-05-23 2013-09-04 深圳市台铃电动车有限公司 Electric anti-theft directional lock
CN108533099A (en) * 2017-03-01 2018-09-14 上海度邦精密机械有限公司 A kind of fuel tank cap electronic lock
CN108734815A (en) * 2017-04-21 2018-11-02 胡洪平 A kind of intelligent brushless wheel hub motor and unlocking method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103276975A (en) * 2013-05-23 2013-09-04 深圳市台铃电动车有限公司 Electric anti-theft directional lock
CN103276975B (en) * 2013-05-23 2017-12-22 深圳市台铃电动车有限公司 Electric anti-theft directional lock
CN108533099A (en) * 2017-03-01 2018-09-14 上海度邦精密机械有限公司 A kind of fuel tank cap electronic lock
CN108734815A (en) * 2017-04-21 2018-11-02 胡洪平 A kind of intelligent brushless wheel hub motor and unlocking method

Similar Documents

Publication Publication Date Title
JP5922565B2 (en) Locking device
CN202089146U (en) Intelligent dual-purpose brake drum remote control electric lock device
CN202347947U (en) Annular electronic lock
CN104295161B (en) Safe box opening linkage mechanism with automatically retractable handle
CN105421900A (en) Electronic lock for charging gun and charging gun with electronic lock
CN104763247A (en) Suitcase zipper password lock
CN205297069U (en) Luggage padlock
CN105464492A (en) Automobile door handle system
CN203856288U (en) Anti-theft device of anti-theft door lock
WO2012162892A1 (en) Intelligent dual-purpose brake hub remote electric lock device
CN204609537U (en) A kind of case and bag puzzle lock for zipper
US20210301558A1 (en) Small Format Interchangeable Core (SFIC) Electronic Cylinder and Method
CN211038209U (en) Automobile door system
CN203806041U (en) Remote-manual combination anti-theft lock
CN207260783U (en) The burglar-proof mechanism of intelligent door lock
CN204139781U (en) Handle of safe deposit box automatic telescopic door-opening linkage mechanism
CN201980330U (en) Intelligent brake hub remote control electric lock device
CN205345144U (en) Electric vehicle anti -theft alarming system
CN205935972U (en) Pickproof lock with double dynamical pair of separation and reunion and high strength spring bolt
CN211173541U (en) Rotary electronic cabinet lock
CN103786810A (en) Remotely-controlled seat cask lock for electric motorcycles
CN110499963B (en) Intelligent lock with improved structure
CN203978055U (en) The concealed hasp of dynamoelectric dual-purpose
CN209568941U (en) A kind of Anti-theft shutter
CN207553793U (en) A kind of automatic door lock

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: SHENZHEN TAILING CAR CO., LTD.

Free format text: FORMER OWNER: SHENZHEN SHENLING CAR CO., LTD.

Effective date: 20120718

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 518105 SHENZHEN, GUANGDONG PROVINCE TO: 518000 SHENZHEN, GUANGDONG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20120718

Address after: 518000 Guangdong city of Shenzhen province Baoan District manhole street community Yabian Ring Road in the town of starlight terrace 1 shop No. 6 first floor (Office)

Patentee after: Shenzhen Tailg Electric Vehicle Co., Ltd.

Address before: 518105 Guangdong city of Shenzhen province Baoan District Songgang Tantou Industrial Zone No. 23 Second Street

Patentee before: Shenzhen Shenling Car Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111228

Termination date: 20190602