CN108952328B - Anti-inserting safety door lock - Google Patents

Anti-inserting safety door lock Download PDF

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Publication number
CN108952328B
CN108952328B CN201810850463.5A CN201810850463A CN108952328B CN 108952328 B CN108952328 B CN 108952328B CN 201810850463 A CN201810850463 A CN 201810850463A CN 108952328 B CN108952328 B CN 108952328B
Authority
CN
China
Prior art keywords
wedge
sliding
shaped
lock body
bolt
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
CN201810850463.5A
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Chinese (zh)
Other versions
CN108952328A (en
Inventor
陈亚南
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.)
Dongguan Yizhi Technology Co ltd
Original Assignee
Lin Qianni
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 Lin Qianni filed Critical Lin Qianni
Priority to CN201810850463.5A priority Critical patent/CN108952328B/en
Publication of CN108952328A publication Critical patent/CN108952328A/en
Application granted granted Critical
Publication of CN108952328B publication Critical patent/CN108952328B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/10Bolts of locks or night latches
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/10Bolts of locks or night latches
    • E05B15/108Bolts with multiple head
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00Accessories in connection with locks
    • E05B17/20Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2003Preventing opening by insertion of a tool, e.g. flexible, between door and jamb to withdraw the bolt
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00Locks or fastenings with special structural characteristics
    • E05B63/14Arrangement of several locks or locks with several bolts, e.g. arranged one behind the other
    • E05B63/146Arrangement of several locks or locks with several bolts, e.g. arranged one behind the other locks with two or more bolts, each bolt itself being a tumbler

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention relates to a safety door lock capable of preventing a card from being inserted, which aims to solve the problem that the existing lock is easy to unlock by the card, and adopts the technical scheme that: the lock body is provided with a wedge-shaped pushing bolt arranged on the side corresponding to the wedge-shaped surface of the wedge-shaped bolt; the lock body is provided with a sliding block which is arranged in parallel with the wedge-shaped lock tongue, the sliding block is connected with the lock body through a pushing spring, and the sliding block slides and pops out of the lock body under the elastic force action of the pushing spring; the wedge-shaped pushing bolt is provided with a sliding rod arranged between the wedge-shaped pushing bolt and a sliding block, the lock body is provided with a check block corresponding to the sliding rod, the sliding block is provided with a clamping groove matched with the check block, one end of the check block is rotatably connected with the lock body along the axis of the sliding rod, and the other end of the check block is arranged in the clamping groove; the sliding rod is provided with a cam groove which is spirally arranged along the axis of the sliding rod, the stop block is provided with a cam push rod matched with the cam groove, and the cam push rod is arranged in the cam groove; the invention can realize automatic protection of the card-inserting unlocking behavior.

Description

Anti-inserting safety door lock
Technical Field
The invention relates to the technical field of door and window safety protection, in particular to an anti-insertion safety door lock.
Background
Most of the existing door locks are mechanical locks which adopt a wedge-shaped bolt to automatically lock, most of the locks are provided with safety locks, and the anti-theft function can be realized by locking the safety locks when people go out; however, due to different personal use habits, many people always habitually close the door and leave the door directly when going out for a short time, and the safety lock is not locked, so that a riding machine is provided for lawless persons, and in the case, the wedge-shaped bolt can be pushed open only by inserting the hard card into the door slot, so that the door can be opened easily and enter the room to implement illegal behaviors.
Particularly, in places such as dormitories, rented rooms and the like around the campus, the safety consciousness of students is thin, the living environment is relatively comfortable, the situation that the safety lock is not locked when the students go out is easy to occur, and the places are high-incidence places of cases such as theft, robbery and the like; different from professional burglary, the mode of opening the door by using the card is easy to master, does not need to have professional unlocking skills, and can be implemented by anyone, so that for the criminal cases, the safety awareness of related personnel is improved, and effective safety protection measures are adopted.
Disclosure of Invention
Aiming at the situation, in order to make up the technical defects in the prior art, the invention provides the anti-card-inserting safety door lock, so as to solve the problem that the existing lock is easy to unlock by a card.
The technical scheme for solving the problem is as follows: the lock body is provided with a wedge-shaped pushing bolt which is arranged in parallel with the wedge-shaped bolt and is arranged on the side corresponding to the wedge-shaped surface of the wedge-shaped bolt, and the wedge-shaped surface of the wedge-shaped pushing bolt and the wedge-shaped surface of the wedge-shaped bolt face towards the same direction; the lock body is provided with a sliding block arranged in parallel with the wedge-shaped lock tongue, the sliding block is connected with the lock body through at least one pushing spring, and the sliding block slides and pops out of the lock body under the elastic force action of the pushing spring; the wedge-shaped pushing bolt is provided with a sliding rod arranged between the wedge-shaped pushing bolt and a sliding block, the axis direction of the sliding rod is consistent with the sliding direction of the wedge-shaped pushing bolt, a check block corresponding to the sliding rod is arranged on the lock body, the sliding block is provided with a clamping groove matched with the check block, one end of the check block is rotatably connected with the lock body along the axis of the sliding rod, and the other end of the check block is arranged in the clamping groove; the slide bar on have the cam groove along the axis spiral setting of slide bar, have the cam follower who matches with the cam groove on the dog, cam follower arranges the cam groove in, when the slide bar pushed away the spring bolt along with the wedge and slides, the dog produced the rotation through cam groove and cam follower's transmission effect, made dog and draw-in groove contact or separation to realize the locking of slider position or remove the locking.
The card-inserting and unlocking device is exquisite in structure and simple to operate, can automatically protect card-inserting and unlocking behaviors without manual intervention after the door is closed, forcibly reserves the card used for implementing criminal behaviors, provides powerful material evidence for later investigation and evidence-obtaining work, and is convenient for accurately locking lawbreakers according to genetic information such as fingerprints on the card; meanwhile, the operation of the novel sliding block and the thimble is completely the same as that of a conventional lock in daily use, so that no trouble is caused to users, even if illegal card inserting unlocking operation occurs, the sliding block and the thimble can be reset only by using a key to perform normal door opening operation, no other operation is needed, and the use process is simple and rapid.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a cross-sectional view a-a of the present invention.
Fig. 3 is a cross-sectional view B-B of the present invention.
Fig. 4 is a cross-sectional view taken along line C-C of fig. 2 in accordance with the present invention.
Fig. 5 is an axial cross-sectional view of the present invention.
Fig. 6 is an enlarged view of portion D of fig. 5 according to the present invention.
Fig. 7 is a perspective cross-sectional view of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, the invention comprises a lock body 1 and a wedge-shaped bolt 2 which slides to pop out the lock body 1, wherein the lock body 1 is provided with a wedge-shaped pushing bolt 3 which is arranged in parallel with the wedge-shaped bolt 2 and is arranged on the side corresponding to the wedge-shaped surface of the wedge-shaped bolt 2, and the wedge-shaped surface of the wedge-shaped pushing bolt 3 and the wedge-shaped surface of the wedge-shaped bolt 2 face the same direction; the lock body 1 is provided with a sliding block 4 which is arranged in parallel with the wedge-shaped bolt 2, the sliding block 4 is connected with the lock body 1 through at least one pushing spring 5, and the sliding block 4 slides and pops out of the lock body 1 under the elastic force action of the pushing spring 5; a slide rod 6 arranged between the wedge-shaped pushing bolt 3 and a slide block 4 is arranged on the wedge-shaped pushing bolt 3, the axial direction of the slide rod 6 is consistent with the sliding direction of the wedge-shaped pushing bolt 3, a stop block 7 corresponding to the slide rod 6 is arranged on the lock body 1, a clamping groove 8 matched with the stop block 7 is arranged on the slide block 4, one end of the stop block 7 is rotatably connected with the lock body 1 along the axial line of the slide rod 6, and the other end of the stop block 7 is arranged in the clamping groove 8; the slide bar 6 on have along the cam groove 9 of the axis spiral setting of slide bar 6, have the cam follower 10 that matches with cam groove 9 on the dog 7, cam follower 10 arranges in cam groove 9, when slide bar 6 pushed up spring bolt 3 along with the wedge and slides, dog 7 produced the rotation through the transmission effect of cam groove 9 with cam follower 10, made dog 7 and draw-in groove 8 contact or separation to realize the locking of slider 4 position or remove the locking.
Preferably, the sliding block 4 is provided with a baffle 11, the wedge-shaped bolt 2 is provided with a push rod 12 corresponding to the baffle 11, when the wedge-shaped bolt 2 slides towards the inner side of the lock body 1, the push rod 12 gradually approaches the baffle 11 to enable the baffle 11 and the wedge-shaped bolt to generate extrusion contact, and the wedge-shaped bolt 2 pushes the sliding block 4 to slide in the same direction through the baffle 11 and the push rod 12; when the wedge-shaped bolt 2 slides out of the lock body 1, the push rod 12 is separated from the baffle 11 and the two are gradually far away, so that the wedge-shaped bolt 2 is not influenced by the ejection of the sliding block 4.
Preferably, the lock body 1 is provided with at least one return spring 13 corresponding to the wedge-shaped pushing bolt 3, and the wedge-shaped pushing bolt 3 slides out of the lock body 1 under the elastic force of the return spring 13.
Preferably, the slide block 4 is provided with a plurality of thimbles 14 arranged at the sliding-out end of the slide block 4, and the direction of the thimbles 14 is consistent with the sliding direction of the slide block 4.
Preferably, the lock body 1 is provided with a slidable blocking piece 15 corresponding to the position of the sliding block 4, the sliding direction of the blocking piece 15 is perpendicular to the sliding direction of the sliding block 4, and the position of the blocking piece 15 is changed through the sliding blocking piece 15 to block the sliding end of the sliding block 4, so that on one hand, the potential safety hazard caused by accidental ejection of the sliding block 4 can be avoided, and on the other hand, the thimble 14 can be shielded, and personnel can be prevented from being injured due to accidental contact with the thimble 14.
Preferably, the two sliding blocks 4, the two sliding rods 6, the two stoppers 7, the two clamping grooves 8, the two cam grooves 9 and the two cam push rods 10 are respectively and symmetrically arranged on two sides of the wedge-shaped pushing bolt 3, and the two sliding blocks 4 are connected through the baffle 11.
When the invention is used, the lock body 1 is arranged on the door body, and the length of the wedge-shaped pushing bolt 3 extending out of the lock body 1 is ensured to be matched with the gap between the door body and the door frame, in order to ensure the using effect of the invention, the length of the wedge-shaped pushing bolt 3 extending out of the lock body 1 is slightly larger than the gap between the door body and the door frame, and the door frame is provided with a lock hole corresponding to the wedge-shaped bolt 2 and a jack corresponding to the thimble 14.
When the door lock is normally used, the operation of the door lock is the same as that of a conventional door lock, when a door body is closed, the wedge-shaped bolt 2 is bounced into a lock hole on a door frame, and the wedge-shaped pushing bolt 3 is reliably contacted with the door frame.
When a stranger inserts and opens the wedge-shaped bolt 2 by using the card, the wedge-shaped pushing bolt 3 is arranged on the side corresponding to the wedge-shaped surface of the wedge-shaped bolt 2, so that the card firstly contacts the wedge-shaped surface of the wedge-shaped pushing bolt 3 to enable the wedge-shaped pushing bolt 3 to slide towards the inner side of the lock body 1; when the wedge-shaped pushing bolt 3 slides towards the inner side of the lock body 1, the sliding rod 6 moves along with the wedge-shaped pushing bolt in the same direction and drives the stop block 7 to rotate towards the outer part of the clamping groove 8 through the transmission action of the cam groove 9 and the cam push rod 10, when the stop block 7 is completely separated from the clamping groove 8, the sliding block 4 loses the blocking of the stop block 7 and drives the ejector pin 14 to rapidly eject out of the lock body 1 under the elastic force action of the pushing spring 5, and the baffle plate 11 moves along with the sliding block 4 to be close to or; the ejector pin 14 which is ejected quickly penetrates through the card and enters the jack on the doorframe, and the card is locked at the current position and cannot be inserted or pulled out continuously, so that lawbreakers are forced to abandon criminal practices.
When the locked card needs to be taken out, the wedge-shaped bolt 2 only needs to slide to the inner side of the lock body 1 by using a key, when the wedge-shaped bolt 2 slides to the inner side of the lock body 1, the push rod 12 is in contact with the baffle plate 11 and pushes the baffle plate 11 to perform reset sliding, the slide block 4 drives the thimble 14 to slide to the inner side of the lock body 1 again along with the reset sliding of the baffle plate 11, and the thimble 14 is separated from the card; at the moment, the card can be taken down by opening the door body, and the card is reserved, so that the relevant information of criminals can be extracted, and investigation and evidence collection are facilitated; when the clamping piece is taken down, the wedge-shaped pushing bolt 3 pops out of the lock body 1 to reset under the elastic force action of the reset spring 13, the sliding rod 6 moves to the initial position along with the wedge-shaped pushing bolt, and the stop block 7 rotates to the clamping groove 8 under the transmission action of the cam groove 9 and the cam push rod 10; at the moment, the key is released and pulled out, and the sliding block 4 is blocked by the stop 7 and cannot be ejected, so that the next protection process can be conveniently implemented.
When the door body needs to be opened for a long time, the blocking piece 15 is required to slide to a position corresponding to the sliding block 4, so that the thimble 14 and the sliding block 4 are completely shielded by the blocking piece 15, on one hand, the potential safety hazard caused by accidental ejection of the sliding block 4 can be avoided, on the other hand, the thimble 14 can be shielded, and the personnel are prevented from accidentally contacting the thimble 14 and being injured.
The card-inserting and unlocking device is exquisite in structure and simple to operate, can automatically protect card-inserting and unlocking behaviors without manual intervention after the door is closed, forcibly reserves the card used for implementing criminal behaviors, provides powerful material evidence for later investigation and evidence-obtaining work, and is convenient for accurately locking lawbreakers according to genetic information such as fingerprints on the card; meanwhile, the operation of the novel sliding block and the thimble is completely the same as that of a conventional lock in daily use, so that no trouble is caused to users, even if illegal card inserting unlocking operation occurs, the sliding block and the thimble can be reset only by using a key to perform normal door opening operation, no other operation is needed, and the use process is simple and rapid.

Claims (5)

1. A safe door lock capable of preventing a card from being inserted comprises a lock body (1) and a wedge-shaped bolt (2) capable of popping out the lock body (1) in a sliding manner, and is characterized in that the lock body (1) is provided with a wedge-shaped pushing bolt (3) which is arranged in parallel with the wedge-shaped bolt (2) and is arranged on the side corresponding to the wedge-shaped surface of the wedge-shaped bolt (2), and the wedge-shaped surface of the wedge-shaped pushing bolt (3) and the wedge-shaped surface of the wedge-shaped bolt (2) face towards the same; the lock body (1) is provided with a sliding block (4) which is arranged in parallel with the wedge-shaped bolt (2), the sliding block (4) is connected with the lock body (1) through at least one pushing spring (5), and the sliding block (4) slides and pops out of the lock body (1) under the elastic force action of the pushing spring (5); a sliding rod (6) arranged between the wedge-shaped pushing bolt (3) and the sliding block (4) is arranged on the wedge-shaped pushing bolt (3), the axis direction of the sliding rod (6) is consistent with the sliding direction of the wedge-shaped pushing bolt (3), a stop block (7) corresponding to the sliding rod (6) is arranged on the lock body (1), a clamping groove (8) matched with the stop block (7) is arranged on the sliding block (4), one end of the stop block (7) is rotatably connected with the lock body (1) along the axis of the sliding rod (6), and the other end of the stop block (7) is arranged in the clamping groove (8); the sliding rod (6) is provided with a cam groove (9) which is spirally arranged along the axis of the sliding rod (6), the stop block (7) is provided with a cam push rod (10) matched with the cam groove (9), the cam push rod (10) is arranged in the cam groove (9), when the sliding rod (6) pushes the lock tongue (3) to slide along with the wedge-shaped push, the stop block (7) rotates under the transmission action of the cam groove (9) and the cam push rod (10), so that the stop block (7) is contacted with or separated from the clamping groove (8), and the locking of the position of the sliding block (4) is realized or the locking is released; the sliding block (4) is provided with a plurality of thimbles (14) arranged at the sliding end of the sliding block (4), and the direction of the thimbles (14) is consistent with the sliding direction of the sliding block (4).
2. The anti-jamming safety door lock according to claim 1, characterized in that a baffle (11) is arranged on the sliding block (4), a push rod (12) corresponding to the baffle (11) is arranged on the wedge-shaped bolt (2), when the wedge-shaped bolt (2) slides in towards the inner side of the lock body (1), the push rod (12) gradually approaches the baffle (11) to enable the baffle (11) and the push rod (12) to generate extrusion contact, and the wedge-shaped bolt (2) pushes the sliding block (4) to slide in the same direction through the baffle (11) and the push rod (12); when the wedge-shaped bolt (2) slides out towards the outer side of the lock body (1), the push rod (12) is separated from the baffle (11) and the push rod and the baffle are gradually far away from each other, so that the wedge-shaped bolt (2) is not influenced by the ejection of the sliding block (4).
3. The anti-jamming safety door lock according to claim 1, characterized in that the lock body (1) is provided with at least one return spring (13) corresponding to the wedge-shaped pushing bolt (3), and the wedge-shaped pushing bolt (3) slides out of the lock body (1) under the elastic force of the return spring (13).
4. The anti-insertion safety door lock according to claim 1, wherein the lock body (1) is provided with a slidable blocking piece (15) corresponding to the position of the sliding block (4), the sliding direction of the blocking piece (15) is perpendicular to the sliding direction of the sliding block (4), the position of the blocking piece (15) is changed by sliding the blocking piece (15) to block the sliding end of the sliding block (4), on one hand, the safety hazard caused by accidental ejection of the sliding block (4) can be avoided, on the other hand, the thimble (14) can be blocked, and the injury caused by accidental contact of a person with the thimble (14) is avoided.
5. The anti-jamming safety door lock according to claim 1, characterized in that two sliding blocks (4), two sliding rods (6), two stoppers (7), two clamping grooves (8), two cam grooves (9) and two cam pushing rods (10) are respectively and symmetrically arranged at two sides of the wedge-shaped pushing bolt (3), and the two sliding blocks (4) are connected through a baffle (11).
CN201810850463.5A 2018-07-28 2018-07-28 Anti-inserting safety door lock Expired - Fee Related CN108952328B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810850463.5A CN108952328B (en) 2018-07-28 2018-07-28 Anti-inserting safety door lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810850463.5A CN108952328B (en) 2018-07-28 2018-07-28 Anti-inserting safety door lock

Publications (2)

Publication Number Publication Date
CN108952328A CN108952328A (en) 2018-12-07
CN108952328B true CN108952328B (en) 2020-04-10

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CN201810850463.5A Expired - Fee Related CN108952328B (en) 2018-07-28 2018-07-28 Anti-inserting safety door lock

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110388139B (en) * 2019-08-30 2024-03-22 许方情 Anti-withdrawal lock body mechanism and touch type door lock

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2248969A1 (en) * 2009-02-11 2010-11-10 Benno Maathuis Lock and modification package for a lock
CN202324837U (en) * 2011-12-01 2012-07-11 广东金点原子制锁有限公司 Anti-unlocking structure of oblique tongue lock of door
CN203213713U (en) * 2013-04-29 2013-09-25 宁波埃迪五金工贸有限公司 Safety door lock
CN104234536A (en) * 2014-08-29 2014-12-24 四川王力安防产品有限公司 Door lock inserting prevention structure
CN204163584U (en) * 2014-07-18 2015-02-18 石狮市天宏金属制品有限公司 A kind of security door
CN204782288U (en) * 2015-05-28 2015-11-18 浙江凯迪仕实业有限公司 Theftproof structure of lock body
CN206352428U (en) * 2016-10-19 2017-07-25 孙继贤 The latch mechanism that a kind of anti-technology is opened
CN206888728U (en) * 2017-05-10 2018-01-16 江门市嘉铭五金制品有限公司 It is a kind of can pick-proof escape lock

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8857864B2 (en) * 2011-07-18 2014-10-14 Ronald T. Snyder, JR. Tamper proof lock and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2248969A1 (en) * 2009-02-11 2010-11-10 Benno Maathuis Lock and modification package for a lock
CN202324837U (en) * 2011-12-01 2012-07-11 广东金点原子制锁有限公司 Anti-unlocking structure of oblique tongue lock of door
CN203213713U (en) * 2013-04-29 2013-09-25 宁波埃迪五金工贸有限公司 Safety door lock
CN204163584U (en) * 2014-07-18 2015-02-18 石狮市天宏金属制品有限公司 A kind of security door
CN104234536A (en) * 2014-08-29 2014-12-24 四川王力安防产品有限公司 Door lock inserting prevention structure
CN204782288U (en) * 2015-05-28 2015-11-18 浙江凯迪仕实业有限公司 Theftproof structure of lock body
CN206352428U (en) * 2016-10-19 2017-07-25 孙继贤 The latch mechanism that a kind of anti-technology is opened
CN206888728U (en) * 2017-05-10 2018-01-16 江门市嘉铭五金制品有限公司 It is a kind of can pick-proof escape lock

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TA01 Transfer of patent application right
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Effective date of registration: 20200320

Address after: Room 19C, Building A, Haitan Villa, 133 Huancheng East Road, Wuma Street, Lucheng District, Wenzhou City, Zhejiang Province, 325000

Applicant after: Lin Qianni

Address before: 450000 No. 97, Wenhua Road, Jinshui District, Henan, Zhengzhou

Applicant before: Chen Yanan

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Effective date of registration: 20220607

Address after: 523000 Room 101, building 11, No. 7, Keji 10th Road, Songshanhu Park, Dongguan City, Guangdong Province

Patentee after: Dongguan Yizhi Technology Co.,Ltd.

Address before: Room 19C, building a, Haitan villa, 133 Huancheng East Road, Wuma street, Lucheng District, Wenzhou City, Zhejiang Province 325000

Patentee before: Lin Qianni

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: 20200410