CN111648663A - Door lock with protection function - Google Patents

Door lock with protection function Download PDF

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Publication number
CN111648663A
CN111648663A CN202010405013.2A CN202010405013A CN111648663A CN 111648663 A CN111648663 A CN 111648663A CN 202010405013 A CN202010405013 A CN 202010405013A CN 111648663 A CN111648663 A CN 111648663A
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CN
China
Prior art keywords
rod
door lock
baffle
moving
spring
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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.)
Granted
Application number
CN202010405013.2A
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Chinese (zh)
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CN111648663B (en
Inventor
赵秀军
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Individual
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Individual
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Priority to CN202010405013.2A priority Critical patent/CN111648663B/en
Publication of CN111648663A publication Critical patent/CN111648663A/en
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Publication of CN111648663B publication Critical patent/CN111648663B/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0041—Damping means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention relates to a door lock with a protection function, which comprises a main body, a fixing plate, a fingerprint recognizer, a driving mechanism and a switch mechanism, wherein the driving assembly comprises a shell, a driving shaft, a fan, a bearing seat and a gear, the driven assembly comprises a rack, a limiting rod and an elastic sheet, the switch mechanism comprises a moving assembly and a switch assembly, the door lock with the protection function realizes the movement of the elastic sheet through the driving mechanism, when the wind power is overlarge, the rack is moved through the driving assembly, namely, the elastic sheet is moved out of the door lock, so that the elastic sheet collides with a threshold to realize elastic touch, the vibration of an electrical element in the door lock is effectively slowed down, the service life of the door lock is prolonged, when a user forgets to take a key, the elastic sheet blocks the threshold, the door cannot be closed due to the large wind, convenience is provided for people, when the elastic sheet needs to be retracted, the, the elastic sheet is retracted by the restoring force of the first spring, and the elastic sheet is simple in structure and convenient to use.

Description

Door lock with protection function
Technical Field
The invention particularly relates to a door lock with a protection function.
Background
The existing door lock generally realizes that the door lock can be opened after mutual authentication through fingerprint identification and a key, when a user forgets to close the door, at the moment, wind force is large, wind can push the door to move, so that the door is impacted on a doorsill, the impact force is large at the moment, components in the door lock are easy to shake loose, the service life is greatly reduced, and when the user forgets to take the key and the door is pushed to close by the wind force, unnecessary trouble is added.
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, a door lock with a protection function is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a door lock with a protection function comprises a main body, a fixing plate, a fingerprint identifier, a driving mechanism and a switch mechanism, wherein the fingerprint identifier and the driving mechanism are arranged in the main body;
the driving mechanism comprises a driving assembly and a driven assembly, the driving assembly comprises a shell, a driving shaft, a fan, a bearing seat and a gear, the driving shaft is horizontally arranged below the fingerprint recognizer, the shell is arranged at one end of the driving shaft, the fan is arranged in the shell, the bearing seat is arranged on the shell, the driving shaft is connected with the fan through the bearing seat, the fan is in transmission connection with the driving shaft, the gear sleeve is arranged on the driving shaft, and the gear is in key connection with the driving shaft;
the driven assembly is located below the gear and comprises a rack, a limiting rod and an elastic sheet, the limiting rod is arranged below the gear, the rack is located between the limiting rod and the gear, one end of the limiting rod is connected with the bottom end inside the main body, the other end of the limiting rod is connected with the rack, the limiting rod is connected with the main body in a sliding mode, the rack is meshed with the gear, the elastic sheet is arranged at one end of the rack, a first spring is arranged at the end, away from the elastic sheet, of the rack, one end of the first spring is connected with the rack, and the other end of the first spring is connected with the main body;
the switching mechanism comprises a moving assembly and a switching assembly, the moving assembly comprises a lantern ring, a baffle, a bead screw, a push rod and a limiting plate, a vertical sliding groove is formed in one side, away from the main body, of the fixing plate, the baffle is arranged in the fixing plate, the lantern ring and the limiting plate are respectively arranged on the baffle in a connected mode, a strip-shaped through hole is formed in the limiting plate, the baffle penetrates through the strip-shaped through hole, the push rod and the bead screw are arranged at one end, away from the limiting plate, of the baffle, the push rod and the bead screw are respectively arranged on two sides of the baffle, the bead screw is connected with the main body, a clamping groove is formed in the baffle, the bead screw is located in the clamping groove, one end of the push rod is connected with the baffle, the other end of the push rod is arranged outside;
the switch assembly is positioned above the lantern ring and comprises a moving rod, a connecting block, a cross rod and a support rod, the cross rod is arranged above the lantern ring, the support rod is arranged between the cross rod and the lantern ring, one end of the support rod is connected with the lantern ring, the other end of the support rod is hinged with the middle of the cross rod, the moving rod penetrates through the lantern ring, one end of the moving rod abuts against the baffle, the other end of the moving rod is arranged below the cross rod, the connecting block is arranged between the cross rod and the moving rod, the moving rod is connected with the cross rod through the connecting block, and one end, far away from the moving rod, of the cross rod is arranged outside the fixing plate through a sliding groove;
the fixing plate is provided with a through hole, the shell is located at the through hole, and a locking unit is arranged between the fingerprint identifier and the shell.
For better support, the moving rod is sleeved with a second spring, the second spring is located between the lantern ring and the baffle, one end of the second spring is connected with the baffle, and the other end of the second spring is connected with the lantern ring.
For better shock absorption, a rubber pad is arranged on the elastic sheet.
For better recovery, a torsional spring is arranged at the hinged position of the cross rod and the support rod.
In order to limit the limiting rod, a moving groove is formed in the bottom end of the inner portion of the main body, and the cross section of the moving groove is in a dovetail shape.
For better movement, a sliding block is arranged in the moving groove, and the limiting rod is connected with the moving groove in a sliding mode through the sliding block.
In order to make the driving shaft rotate more smoothly, one end of the driving shaft far away from the fan is connected with the main body through a bearing.
The door lock with the protection function has the advantages that the movement of the elastic sheet is realized through the driving mechanism, when the wind power is too high, the rack is moved through the driving assembly, namely the elastic sheet is moved out of the door lock, so that the elastic sheet collides with the threshold to realize elastic touch, the vibration of an electrical component in the door lock is effectively slowed down, the service life of the door lock is prolonged, when a user forgets a key, the elastic sheet blocks the threshold, the door cannot be closed due to high wind, convenience is provided for people, when the elastic sheet needs to be retracted, the shielding of a fan can be realized only by pushing the cross rod, the elastic sheet is retracted through the restoring force of the first spring, the structure is simple, and the use is convenient.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of a door lock with a protection function according to the present invention;
FIG. 2 is a schematic view of the structure of the door lock with protection function of the present invention;
fig. 3 is a schematic structural view of a driving mechanism of the door lock with a protection function of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 2;
fig. 5 is a schematic view of a connection structure of a gear and a rack of the door lock with a protection function according to the present invention;
in the figure: 1. the fingerprint identification device comprises a main body, 2 parts of a fixing plate, 3 parts of a shell, 4 parts of a driving shaft, 5 parts of a fan, 6 parts of a bearing seat, 7 parts of a gear, 8 parts of a rack, 9 parts of a limiting rod, 10 parts of a spring plate, 11 parts of a fingerprint identifier, 12 parts of a lantern ring, 13 parts of a baffle, 14 parts of a ball screw, 15 parts of a push rod, 16 parts of a limiting plate, 17 parts of a moving rod, 18 parts of a connecting block, 19 parts of a cross rod, 20 parts of a supporting rod, 21 parts of a second spring and 22 parts of a first.
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 to 5, a door lock with a protection function comprises a main body 1, a fixing plate 2, a fingerprint identifier 11, a driving mechanism and a switch mechanism, wherein the fingerprint identifier 11 and the driving mechanism are both arranged in the main body 1, the driving mechanism is positioned below the fingerprint identifier 11, the fixing plate 2 is arranged at one side of the main body 1, the fixing plate 2 is arranged in a hollow manner, and the switch mechanism is positioned in the fixing plate 2;
the driving mechanism comprises a driving assembly and a driven assembly, the driving assembly comprises a shell 3, a driving shaft 4, a fan 5, a bearing seat 6 and a gear 7, the driving shaft 6 is horizontally arranged below the fingerprint recognizer 11, the shell 3 is arranged at one end of the driving shaft 6, the fan 5 is arranged in the shell 3, the bearing seat 6 is arranged on the shell 3, the driving shaft 4 is connected with the fan 5 through the bearing seat 6, the fan 5 is in transmission connection with the driving shaft 4, the gear 7 is sleeved on the driving shaft 4, and the gear 7 is in key connection with the driving shaft 4;
the driven assembly is positioned below the gear 7 and comprises a rack 8, a limiting rod 9 and a spring plate 10, the limiting rod 9 is arranged below the gear 7, the rack 8 is positioned between the limiting rod 9 and the gear 7, one end of the limiting rod 9 is connected with the bottom end inside the main body 1, the other end of the limiting rod 9 is connected with the rack 8, the limiting rod 9 is connected with the main body 1 in a sliding mode, the rack 8 is meshed with the gear 7, the spring plate 10 is arranged at one end of the rack 8, the end, far away from the spring plate 10, of the rack 8 is provided with a first spring 22, one end of the first spring 22 is connected with the rack 8, and the other end of the first spring 22 is connected with the main body (1);
the switch mechanism comprises a moving assembly and a switch assembly, the moving assembly comprises a sleeve ring 12, a baffle 13, a bead screw 14, a push rod 15 and a limiting plate 16, one side of the fixing plate 2, which is far away from the main body 1, is provided with a vertical chute, the baffle 13 is arranged in the fixing plate 2, the sleeve ring 12 and the limiting plate 16 are respectively arranged at two ends of the baffle 13, a strip-shaped through hole is arranged on the limiting plate 16, the baffle 13 penetrates through the strip-shaped through hole, the push rod 15 and the bead screw 14 are arranged at one end, which is far away from the limiting plate 16, of the baffle 13, the push rod 15 and the bead screw 14 are respectively arranged at two sides of the baffle 13, the bead screw 14 is connected with the main body 1, a clamping groove is arranged on the baffle 13, the bead screw 14 is positioned in the clamping groove, one end of the push rod 15 is connected with the baffle 13, the, the push rod 15 is connected with the sliding chute in a sliding manner;
the switch assembly is located above the lantern ring 12 and comprises a moving rod 17, a connecting block 18, a cross rod 19 and a support rod 20, the cross rod 19 is arranged above the lantern ring 12, the support rod 20 is arranged between the cross rod 19 and the lantern ring 12, one end of the support rod 20 is connected with the lantern ring 12, the other end of the support rod 20 is hinged to the middle of the cross rod 19, the moving rod 17 penetrates through the lantern ring 12, one end of the moving rod 17 abuts against the baffle 13, the other end of the moving rod 17 is arranged below the cross rod 19, the connecting block 18 is arranged between the cross rod 19 and the moving rod 17, the moving rod 17 is connected with the cross rod 19 through the connecting block 18, and one end, far away from the moving rod 17, of the cross rod 19 is arranged outside the fixing plate 2 through a sliding;
the fixing plate 2 is provided with a through hole, the shell 3 is located at the through hole, and a locking unit is arranged between the fingerprint identifier 11 and the shell 3.
For better abutting, a second spring 21 is sleeved on the moving rod 17, the second spring 21 is positioned between the lantern ring 12 and the baffle 13, one end of the second spring 21 is connected with the baffle 13, and the other end of the second spring 21 is connected with the lantern ring 12.
For better shock absorption, a rubber pad is arranged on the elastic sheet 10.
For better recovery, a torsion spring is arranged at the hinged part of the cross bar 18 and the support bar 20.
In order to limit the limiting rod 9, a moving groove is formed in the bottom end of the inner portion of the main body 1, and the cross section of the moving groove is in a dovetail shape.
For better movement, a sliding block is arranged in the moving groove, and the limiting rod 9 is connected with the moving groove in a sliding mode through the sliding block.
In order to make the rotation of the driving shaft smoother, the end of the driving shaft 4 remote from the fan 5 is connected to the main body 1 by a bearing.
When the wind power is large, the wind blows the fan 5 to rotate, the fan 5 drives the driving shaft 4 to rotate, the driving shaft 4 drives the gear 7 to rotate, the gear 7 drives the rack 8 to move, the elastic piece 10 on the rack 8 moves out of the door lock, the first spring 22 is in a compressed state, the wind power is larger than the restoring force of the first spring 22, the elastic piece 10 is always positioned outside the door lock, the door collides with the threshold at the moment, the impact force is greatly reduced through elastic contact of the elastic piece 10 and the threshold, components in the door lock are prevented from being loosened due to collision, and when a user forgets a key, the elastic piece 10 blocks the threshold, the door cannot be closed due to the large wind, and convenience is provided for people.
When the elastic sheet 10 needs to be retracted, only the cross rod 19 needs to be pushed, the cross rod 19 drives the moving rod 17 to move, the moving rod 17 drives the baffle 13 to move, at this time, the bead screws 14 in the clamping grooves can be bounced off, the moving rod 17 moves downwards, at this time, the second springs 21 are in a compression state, the baffle 13 can enable the baffle 13 to better move to the through holes of the fixing plate 2 through the restoring force of the second springs 21, the fan 5 is blocked, the fan 5 stops rotating, the elastic force of the bead screws 14 is larger than the restoring force of the second springs 21, at this time, the rack 8 can be moved to the initial position through the restoring force of the first springs 22 due to the fact that the fan 5 stops rotating, and therefore the elastic sheet 10 can be retracted.
The baffle 13 is always abutted against the moving rod 17 at the position, the baffle 13 pushes the moving rod 17 to move to the through hole only when the elastic sheet 10 needs to be retracted, and the fan 5 can be driven to rotate only when the wind power reaches the preset value.
The door lock can be better damped by the rubber pad arranged on the spring plate 10.
This lock with protect function, realize the removal to shell fragment 10 through actuating mechanism, here when wind-force is too big, make rack 8 remove through drive assembly, shell fragment 10 shifts out the lock promptly, make shell fragment 10 and threshold collision, realize the elasticity touching, the effectual vibrations that slow down the inside electrical components of lock, thereby increase the life of lock, and when the user forgets the key, shell fragment 10 can block the threshold, make the door can not close because of wind is big, give other people and provide convenience, only need promote horizontal pole 19 when the shell fragment 10 is withdrawed to needs and can realize sheltering from fan 5, restoring force through first spring 22 makes shell fragment 10 withdraw, moreover, the steam generator is simple in structure, and is convenient to use.
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 (7)

1. A door lock with a protection function is characterized by comprising a main body (1), a fixing plate (2), a fingerprint recognizer (11), a driving mechanism and a switch mechanism, wherein the fingerprint recognizer (11) and the driving mechanism are both arranged in the main body (1), the driving mechanism is positioned below the fingerprint recognizer (11), the fixing plate (2) is arranged on one side of the main body (1), the fixing plate (2) is arranged in a hollow manner, and the switch mechanism is positioned in the fixing plate (2);
the driving mechanism comprises a driving assembly and a driven assembly, the driving assembly comprises a shell (3), a driving shaft (4), a fan (5), a bearing seat (6) and a gear (7), the driving shaft (6) is horizontally arranged below the fingerprint recognizer (11), the shell (3) is arranged at one end of the driving shaft (6), the fan (5) is arranged in the shell (3), the bearing seat (6) is arranged on the shell (3), the driving shaft (4) is connected with the fan (5) through the bearing seat (6), the fan (5) is in transmission connection with the driving shaft (4), the gear (7) is sleeved on the driving shaft (4), and the gear (7) is in key connection with the driving shaft (4);
the driven component is positioned below the gear (7) and comprises a rack (8), a limiting rod (9) and an elastic sheet (10), the limiting rod (9) is arranged below the gear (7), the rack (8) is positioned between the limiting rod (9) and the gear (7), one end of the limiting rod (9) is connected with the bottom end inside the main body (1), the other end of the limiting rod (9) is connected with the rack (8), the limiting rod (9) is connected with the main body (1) in a sliding way, the rack (8) is meshed with the gear (7), the elastic sheet (10) is arranged at one end of the rack (8), a first spring (22) is arranged at the end of the rack (8) far away from the elastic sheet (10), one end of the first spring (22) is connected with the rack (8), and the other end of the first spring (22) is connected with the main body (1);
the switch mechanism comprises a moving assembly and a switch assembly, the moving assembly comprises a sleeve ring (12), a baffle (13), a bead screw (14), a push rod (15) and a limiting plate (16), one side of the fixing plate (2) far away from the main body (1) is provided with a vertical sliding groove, the baffle (13) is arranged in the fixing plate (2), the sleeve ring (12) and the limiting plate (16) are respectively arranged at two ends of the baffle (13), a strip-shaped through hole is arranged on the limiting plate (16), the baffle (13) penetrates through the strip-shaped through hole, the push rod (15) and the bead screw (14) are arranged at one end of the baffle (13) far away from the limiting plate (16), the push rod (15) and the bead screw (14) are respectively arranged at two sides of the baffle (13), the bead screw (14) is connected with the main body (1), a clamping groove is arranged on the baffle (13), and the bead screw (14) is positioned in the clamping groove, one end of the push rod (15) is connected with the baffle (13), the other end of the push rod (15) is arranged outside the fixed plate (2) through a sliding groove, and the push rod (15) is in sliding connection with the sliding groove;
the switch component is positioned above the lantern ring (12) and comprises a moving rod (17), a connecting block (18), a cross rod (19) and a support rod (20), the cross bar (19) is arranged above the lantern ring (12), the support rod (20) is arranged between the cross bar (19) and the lantern ring (12), one end of the supporting rod (20) is connected with the lantern ring (12), the other end of the supporting rod (20) is hinged with the middle part of the cross rod (19), the moving rod (17) penetrates through the sleeve ring (12), one end of the moving rod (17) is abutted against the baffle plate (13), the other end of the moving rod (17) is arranged below the cross rod (19), the connecting block (18) is arranged between the cross rod (19) and the moving rod (17), the moving rod (17) is connected with a cross rod (19) through a connecting block (18), one end of the cross rod (19) far away from the moving rod (17) is arranged outside the fixed plate (2) through a sliding groove;
the fingerprint identification device is characterized in that a through hole is formed in the fixing plate (2), the shell (3) is located at the through hole, and a locking unit is arranged between the fingerprint identification device (11) and the shell (3).
2. A door lock with protection function according to claim 1, characterized in that said moving rod (17) is sleeved with a second spring (21), said second spring (21) is located between the collar (12) and the stop plate (13), one end of said second spring (21) is connected with the stop plate (13), and the other end of said second spring (21) is connected with the collar (12).
3. A door lock with protection function according to claim 1, characterized in that said spring plate (10) is provided with a rubber pad.
4. A door lock with protection function according to claim 1, characterized in that the hinge of the cross bar (19) and the support bar (20) is provided with a torsion spring.
5. A door lock with protection function according to claim 1, characterized in that the bottom end of the inside of the main body (1) is provided with a moving groove, the cross section of which is dovetail-shaped.
6. A door lock with protection function according to claim 1, characterized in that a sliding block is arranged in the moving groove, and the limit rod (9) is connected with the moving groove in a sliding way through the sliding block.
7. A door lock with protective function according to claim 1, characterized in that the end of the drive shaft (4) remote from the fan (5) is connected to the body (1) by means of a bearing.
CN202010405013.2A 2020-05-14 2020-05-14 Door lock with protection function Active CN111648663B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010405013.2A CN111648663B (en) 2020-05-14 2020-05-14 Door lock with protection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010405013.2A CN111648663B (en) 2020-05-14 2020-05-14 Door lock with protection function

Publications (2)

Publication Number Publication Date
CN111648663A true CN111648663A (en) 2020-09-11
CN111648663B CN111648663B (en) 2022-01-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010405013.2A Active CN111648663B (en) 2020-05-14 2020-05-14 Door lock with protection function

Country Status (1)

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CN (1) CN111648663B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112227830A (en) * 2020-10-12 2021-01-15 董德武 Lockset capable of preventing door body from being closed by mistake

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005213782A (en) * 2004-01-27 2005-08-11 Max Co Ltd Dead bolt unit and locking device
CN2929095Y (en) * 2006-07-12 2007-08-01 罗力 Anti-theft doo lock for safety door
CN102425333A (en) * 2011-12-29 2012-04-25 上海洋洋大多利特殊钉有限公司 Rotary handle-free unlatched door lock
KR101724364B1 (en) * 2016-10-26 2017-04-19 주식회사 시안 Door locking device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005213782A (en) * 2004-01-27 2005-08-11 Max Co Ltd Dead bolt unit and locking device
CN2929095Y (en) * 2006-07-12 2007-08-01 罗力 Anti-theft doo lock for safety door
CN102425333A (en) * 2011-12-29 2012-04-25 上海洋洋大多利特殊钉有限公司 Rotary handle-free unlatched door lock
KR101724364B1 (en) * 2016-10-26 2017-04-19 주식회사 시안 Door locking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112227830A (en) * 2020-10-12 2021-01-15 董德武 Lockset capable of preventing door body from being closed by mistake

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