CN113914713B

CN113914713B - Security door lock

Info

Publication number: CN113914713B
Application number: CN202111069379.8A
Authority: CN
Inventors: 苏玉峦; 孙嘉睿
Original assignee: XIANGSHENG TECHNOLOGY CO LTD
Current assignee: XIANGSHENG TECHNOLOGY CO LTD
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2023-01-10
Anticipated expiration: 2041-09-13
Also published as: CN113914713A

Abstract

The invention relates to the field of door locks, in particular to a security door lock which comprises a lock tongue, wherein the right side of the lock tongue is fixed on a baffle, the right side of the baffle is fixedly connected with a connecting block, the right end of the connecting block is inserted into a protective shell and is fixedly connected with a sliding frame, the sliding frame can drive the connecting block to horizontally move left and right when sliding, the lock tongue is matched with the connecting block to horizontally move, the effect of opening and closing the door lock is achieved, a pair of turntables is arranged on two sides of the sliding frame, strip-shaped clamping blocks are fixedly connected to the upper end and the lower end of each turntable, a section of arc-shaped sliding block extends out of the tail end of each strip-shaped clamping block, a sliding block is arranged on the right side of each turntable and is slidably connected with the upper wall and the lower wall of the protective shell, when the arc-shaped sliding blocks rotate around the turntables, a security assembly is arranged on the outer side of each turntable, the lock can prevent the lock from being closed before a user pulls out a key, and the security performance of the door lock is improved.

Description

Security door lock

Technical Field

The invention relates to the field of door locks, in particular to a security door lock.

Background

Along with the continuous development of security door locks, the popularization degree of the security door locks is higher and higher, and the requirement of the public on the safety performance of the door locks is higher and higher, and the patent number CN108999493A discloses a security door lock, which comprises a door lock body, a lock cover, a guide rail, an input device, an infrared scanning device and a central control system, wherein the guide rail is arranged on two sides of the door lock body, the guide rail is connected with two ends of the lock cover, the input device is arranged on the door lock body, the infrared scanning device is arranged on the lock cover, and the central control system is arranged in the door lock body; however, when the existing security door lock is used, the risk that a user forgets to pull out a key due to negligence still exists after unlocking the lock through the key, so that various anti-theft devices in the security door lock cannot play a role, and potential safety hazards are caused.

Disclosure of Invention

The invention aims to solve the problem of property loss or potential safety hazard caused by forgetting to pull out a security door lock key by personnel.

The invention provides the following technical scheme: a security door lock comprises a spring bolt, the right side of the spring bolt is fixed on a baffle, the right side of the baffle is fixedly connected with a connecting block, the right end of the connecting block is inserted into a protective shell and is fixedly connected with a sliding frame, the sliding frame can drive the connecting block to horizontally move left and right when sliding, the spring bolt is matched with the connecting block to horizontally move, the effect of opening and closing the door lock is achieved, a through groove is formed in the middle of the connecting block, a first spring is arranged outside the connecting block, the left end of the first spring is fixed on the baffle, the right end of the first spring is fixedly connected with the protective shell, the upper wall and the lower wall of the protective shell are provided with sliding grooves, the sliding frame is slidably connected with the protective shell through the sliding grooves, a pair of turntables is arranged on two sides of the sliding frame, strip-shaped clamping blocks are fixedly connected with the upper end and the lower end of the turntables, the strip-shaped clamping blocks are symmetrical about the horizontal plane of the central axis of the turntables, one section circular arc slider is extended to the bar fixture block end of carousel upper end, circular arc slider and the bar fixture block fixed connection of carousel upper end, the carousel right side is equipped with the slider, evenly distributed has the second ratchet on the slider right side wall, slider and protective housing upper and lower wall sliding connection, protective housing right side inner wall is the arc inner wall, the slider right side wall forms a circular arc spout with the arc inner wall of protective housing right side inner wall jointly, when the circular arc slider uses the carousel to rotate as the center, can slide in the circular arc spout of constitution, the protective housing passes through dead lever and keyhole outer wall fixed connection, be equipped with the tubulose spout on the keyhole outer wall, tubulose spout internal rotation is connected with hollow cylinder, be equipped with the security protection subassembly in the hollow cylinder, hollow cylinder and handle fixed connection.

Specifically, the wall middle part is equipped with the dog about the sliding frame, dog and bar fixture block sliding contact, when the bar fixture block rotates along with the carousel, the dog arrives right effort to drive the sliding frame and slide in the spout.

Specifically, the sliding frame left end is equipped with the buckle, and the buckle joint is on the groove that runs through of connecting block, and when the sliding frame slided right, the buckle drove the connecting block motion, and the baffle carries out the translation with the spring bolt cooperation, and first spring is compressed tightly by the baffle simultaneously, when first spring resumes, drives connecting block and sliding frame and returns the normal position.

It is specific, slider left side wall articulates there is the connecting rod, the connecting rod is articulated with the cylinder on gear reference circle surface, the gear passes through the bracing piece to be fixed on the protective housing lower wall, gear left end gear connection has the rack, the rack runs through keyhole outer wall and security protection subassembly fixed connection, when the security protection subassembly moves to the direction of keeping away from the gear, the rack drives gear revolve, eccentric articulated connecting rod cooperation motion on the gear simultaneously, it is close to slider one side inner wall to push away the slider to the protective housing, make the circular arc spout width that slider right side wall and protective housing right side arc inner wall formed narrow down, a motion that resumes for restriction circular arc slider 12 in the circular arc spout.

The safety protection door lock comprises a slide block, a protective shell, a slide block right side wall, a slide groove and a slide groove, wherein the slide groove is formed by the slide block right side wall and the slide block right side arc inner wall, the slide groove is formed by the slide block right side wall and the protective shell right side arc inner wall, the phenomenon that the whole safety protection door lock is rocked due to overlarge clearance between parts is avoided, and the safety protection door lock is integrally stable and durable.

Concretely, the inboard evenly distributed of circular arc slider has the first ratchet that matches with the slider, move right when the slider and make slider right side wall and protective housing be close to the circular arc spout width that slider one side arc inner wall formed and diminish, in the circular arc slider changes over to the circular arc spout that forms, second ratchet on the slider right side wall and the first ratchet joint of circular arc slider inboard, the circular arc slider can't be turned round and withdraw from the circular arc spout, the spring bolt is in and is driven the state of contracting right by the sliding frame this moment, the security protection lock can't make the door closed.

Specifically, the square groove has been seted up at the carousel center, and the square groove runs through the carousel, and fixed mounting has hollow turning block in the square groove, and handle one side outer wall fixed connection is kept away from with hollow cylinder at the turning block both ends, and when the user rotated the handle, the hollow cylinder cooperation rotated, drove the carousel and carries out coaxial rotation, and bar fixture block and dog sliding friction on the carousel drive the sliding frame and move right, and the spring bolt cooperation is retracted right, and the lock is opened.

Specifically, one side fixed mounting that the handle was kept away from to the keyhole outer wall has the torsional spring, and when the handle rotated, the turning block rotation compressed tightly the torsional spring, and the user loosens the handle after, the torsional spring resumeed, drives handle and turning block and security protection lock inner structure and resumes to the normal position.

The security protection subassembly is including fixed disc, the second spring, first spiral slider and second spiral slider, the recess is seted up to fixed disc upper end, fixed disc is close to fixed link second spring on the outer wall of handle one side, the other end and the second spiral slider fixed connection of second spring, second spiral slider upper end is equipped with outstanding inserted block, the inserted block matches with the recess, the helical surface of second spiral slider and first spiral slider's helical surface sliding connection, the door lock is fashionable, inserted block embedding recess on the second spiral slider, the handle can't drive hollow cylinder and rotate, when first spiral slider rotates, second spiral slider is promoted by the second spring, slide to the handle direction in hollow cylinder, closely laminate with first spiral slider, the door lock is opened.

Specifically, rectangular through holes are formed in the centers of the fixed disc, the first spiral sliding block and the second spiral sliding block, and a user outside a door can unlock the door by inserting a key into the rectangular through hole and rotating the first spiral sliding block outside the door.

Compared with the prior art, the invention has the following beneficial effects:

through set up the circular arc slider in the security protection lock, when the key was twisted round, the circular arc slider passed through the ratchet joint with the slider in the protective housing, made the user before not twisting back the key, the spring bolt can't pop out from the lock is inside, and the lock can't be closed, has avoided the user just to close the problem of door before not extracting the key, has improved the security performance of security protection lock.

Drawings

FIG. 1 is a top cross-sectional view of a security door lock of the present invention;

FIG. 2 isbase:Sub>A sectional view taken along the line A-A of FIG. 1 ofbase:Sub>A security door lock according to the present invention;

FIG. 3 is a partial top view of the middle portion of the protective case of the security door lock of the present invention;

FIG. 4 is a sectional view taken along the line B-B of FIG. 1 of a security door lock according to the present invention;

fig. 5 is a cross-sectional view taken along the direction C-C in fig. 2 of a security door lock according to the present invention.

In the figure: the safety protection device comprises a bolt 1, a baffle 2, a connecting block 3, a protective shell 4, a sliding frame 5, a buckle 501, a through groove 6, a first spring 7, a sliding groove 8, a stop dog 9, a rotary disc 10, a square groove 101, a rotating block 102, a strip-shaped clamping block 11, an arc-shaped sliding block 12, a first ratchet 121, a second ratchet 122, a sliding block 13, a connecting rod 131, a gear 132, a supporting rod 133, a rack 134, a keyhole outer wall 14, a fixed rod 15, a tubular sliding groove 16, a hollow cylinder 17, a safety protection assembly 18, a fixed disc 181, a second spring 182, a first spiral sliding block 183, a second spiral sliding block 184, a groove 185, an inserting block 186, a handle 19, a torsion spring 20 and a rectangular through hole 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the designated device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, it is not to be understood that the present invention is limited to the embodiments based on the present invention, and all other embodiments obtained by one of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a security door lock comprises a lock tongue 1, the right side of the lock tongue 1 is fixed on a baffle 2, the right side of the baffle 2 is fixedly connected with a connecting block 3, the right end of the connecting block 3 is inserted into a protective housing 4 and is fixedly connected with a sliding frame 5, the sliding frame 5 can drive the connecting block 3 to horizontally move left and right when sliding, the lock tongue 1 is matched with the connecting block 3 to horizontally move, so as to achieve the effect of opening and closing the door lock, the middle part of the connecting block 3 is provided with a through groove 6, the outside of the connecting block 3 is provided with a first spring 7, the left end of the first spring 7 is fixed on the baffle 2, the right end of the first spring 7 is fixedly connected with the protective housing 4, the upper wall and the lower wall of the protective housing 4 are provided with a sliding groove 8, the sliding frame 5 is slidably connected with the protective housing 4 through the sliding groove 8, two sides of the sliding frame 5 are provided with a pair of turntables 10, the upper end and the lower end of each turntable 10 are fixedly connected with a strip-shaped clamping block 11, the strip-shaped clamping block 11 is symmetrical with respect to the horizontal plane where the central axis of the turntables 10, a section of arc slide block 12 extends from the end of a strip-shaped clamping block 11 at the upper end of a rotary table 10, the arc slide block 12 is fixedly connected with the strip-shaped clamping block 11 at the upper end of the rotary table 10, a slide block 13 is arranged at the right side of the rotary table 10, ratchets 121 are uniformly distributed on the right side wall of the arc slide block 12, the slide block 13 is in sliding connection with the upper wall and the lower wall of a protective shell 4, the right side wall of the protective shell 4 is an arc inner wall, an arc chute is formed by the right side wall of the slide block 13 and the arc inner wall of the right side inner wall of the protective shell 4, the arc slide block 12 can slide in the formed arc chute when rotating around the rotary table 10, the protective shell 4 is fixedly connected with a lock hole outer wall 14 through a fixed rod 15, a tubular chute 16 is arranged on the lock hole outer wall 14, a hollow cylinder 17 is rotatably connected with the tubular chute 16, a security assembly 18 is arranged in the hollow cylinder 17, the hollow cylinder 17 is fixedly connected with a handle 19, and the security assembly 18 is matched with the handle 19, the front door lock can not be closed when the key is not pulled out, and the safety performance of the door lock is improved.

Specifically, wall middle part is equipped with dog 9 about 5, dog 9 and 11 sliding contact of bar fixture block, when bar fixture block 11 rotates along with carousel 10, dog 9 receives 11 right effort of bar fixture block, thereby will drive sliding frame 5 and slide in spout 8.

Specifically, 5 left ends of sliding frame are equipped with buckle 501, and buckle 501 joint is on connecting block 3's through groove 6, and when sliding frame 5 slided right, buckle 501 drove the motion of connecting block 3, and baffle 2 carries out the translation with the cooperation of spring bolt 1, and first spring 7 is compressed tightly by baffle 2 simultaneously, when first spring 7 resumes, drives connecting block 3 and sliding frame 5 and returns the normal position.

Specifically, slider 13 left side wall articulates there is connecting rod 131, connecting rod 131 is articulated with the cylinder on gear 132 surface, gear 132 rotates through bracing piece 133 and connects on protective housing 4 lower wall, the meshing of gear 132 left end has rack 134, rack 134 runs through keyhole outer wall 14 and security protection subassembly 18 fixed connection, when security protection subassembly 18 moves to the direction of keeping away from gear 132, rack 134 drives gear 132 and rotates, eccentric articulated connecting rod 131 cooperation motion on gear 132 simultaneously, push close slider 13 to protective housing 4 near slider 13 one side inner wall, make the circular arc spout width that slider 13 right side wall and protective housing 4 right side arc inner wall formed narrow down for the motion that resumes of restriction circular arc slider 12 in the circular arc spout.

Specifically, 13 right side walls of slider are the arc outer wall, and 13 right side walls of slider radian and circular arc slider 12 and protective housing 4 are close to the radian matching of 13 one side inner walls of slider, make circular arc slider 12 can be smooth and easy, inseparable slide in the circular arc spout that 13 right side walls of slider and protective housing 4 right side arc inner wall formed, avoid the phenomenon that the clearance is too big to lead to whole rocking between the part, make the security protection lock wholly more firm durable.

Specifically, the first ratchets 121 matched with the second ratchets 122 on the surface of the sliding block 13 are uniformly distributed on the inner side of the arc sliding block 12, when the sliding block 13 moves rightwards, the width of an arc sliding groove formed by the right side wall of the sliding block 13 and the right side arc inner wall of the protective shell 4 is reduced, the arc sliding block 12 is rotated into the arc sliding groove, the second ratchets 122 on the right side wall of the sliding block 13 are clamped with the first ratchets 121 on the inner side of the arc sliding block 12, the arc sliding block 12 cannot rotate to exit from the arc sliding groove, at the moment, the lock tongue 1 is driven by the sliding frame 5 to shrink rightwards, and the security door lock cannot close the door.

Specifically, square groove 101 has been seted up at carousel 10 center, square groove 101 runs through carousel 10, fixed mounting has hollow turning block 102 in the square groove 101, turning block 102 both ends and hollow cylinder 17 keep away from 19 one side outer wall fixed connection of handle, when the user rotated handle 19, hollow cylinder 17 cooperation rotated, it carries out coaxial rotation to drive carousel 10, bar fixture block 11 and the 9 sliding friction of dog on the carousel 10 drive sliding frame 5 and move right, 1 cooperation of spring bolt is retracted right, the lock is opened.

Specifically, one side of the keyhole outer wall 14, which is far away from the handle 19, is fixedly provided with a torsion spring 20, when the handle 19 rotates, the rotating block 101 rotates to compress the torsion spring 20, and after a user loosens the handle 19, the torsion spring 20 recovers to drive the handle 19, the rotating block 101 and the internal structure of the security door lock to recover to the original position.

Specifically, the security assembly 18 includes a fixed disk 181, a second spring 182, a first spiral slider 183 and a second spiral slider 184, a groove 185 is formed in the upper end of the fixed disk 181, the fixed disk 181 is fixedly linked with the second spring 182 on the outer wall of one side close to the handle 19, the other end of the second spring 182 is fixedly connected with the second spiral slider 184, a protruding insertion block 186 is arranged at the upper end of the second spiral slider 184, the insertion block 186 is matched with the groove 185, the spiral curved surface of the second spiral slider 184 is slidably connected with the spiral curved surface of the first spiral slider 183, when the door is locked, the insertion block 186 on the second spiral slider 184 is inserted into the groove 185, the handle 19 cannot drive the hollow cylinder 17 to rotate, when the first spiral slider 183 rotates, the second spiral slider 184 is pushed by the second spring 182 to slide in the direction of the handle 19 in the hollow cylinder 17, and tightly attach to the first spiral slider 183, and the door lock is opened.

Specifically, rectangular through holes 21 are formed in the centers of the fixed disc 181, the first spiral sliding block 183 and the second spiral sliding block 184, and a user outside the door can insert a key into the rectangular through holes 21 to rotate the first spiral sliding block 183 outside the door to unlock the door.

The working principle is as follows: when the door lock is used, a user can rotate the first spiral sliding block 183 outside the door by inserting a key into the rectangular through hole 21, when the first spiral sliding block 183 rotates, the second spiral sliding block 184 is pushed by the second spring 182 to slide towards the handle 19 in the hollow cylinder 17, the first spiral sliding block 183 is tightly attached to the second spiral sliding block 183, the handle 19 is in a rotatable state, the rack 134 drives the gear 132 to rotate, meanwhile, the connecting rod 131 eccentrically connected to the gear 132 moves in a matched manner, the sliding block 13 is pushed towards the inner wall of the protective shell 4 close to the side of the sliding block 13, the width of an arc sliding groove formed by the right side wall of the sliding block 13 and the arc inner wall of the protective shell 4 is narrowed, the user rotates the handle 19, the hollow cylinder 17 rotates in a matched manner to drive the rotary disc 10 to rotate coaxially, the strip-shaped clamping block 11 on the rotary disc 10 is in sliding friction with the clamping block 9 to drive the sliding frame 5 to move rightwards, and the bolt 1 retracts rightwards in a matched manner, the arc sliding block 12 is rotated into the formed arc sliding chute, the second ratchet 122 on the right side wall of the sliding block 13 is clamped with the first ratchet 121 on the inner side of the arc sliding block 12, the arc sliding block 12 can not rotate to exit the arc sliding chute, at the moment, the lock tongue 1 is in a state of being driven by the sliding frame 5 to shrink rightwards, the security door lock can not close the door, after a user screws the key reversely, the second spiral sliding block 184 moves towards the direction far away from the handle 19, the sliding block 13 slides towards the direction far away from the arc inner wall on the right side of the protective shell 4 under the driving of the transmission mechanism, the first ratchet 121 is separated from the second ratchet 122, the arc sliding block 12 and the rotating disc 10 are in situ, the lock tongue 1 is popped out, the security door lock can be in a closing state, the scheme can be restored, the user needs to screw the key to pop out the lock tongue after unlocking, the situation that the user directly screws the handle 19 to pull out the key after unlocking is avoided, the safety of the user is guaranteed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a security protection lock, includes spring bolt (1), its characterized in that: the right side of the lock tongue (1) is fixedly connected to the baffle (2), the right side of the baffle (2) is fixedly connected with the connecting block (3), the right end of the connecting block (3) is inserted into the protective shell (4) and is fixedly connected with the sliding frame (5), the middle part of the connecting block (3) is provided with a through groove (6), the outer part of the connecting block (3) is provided with a first spring (7), the left end of the first spring (7) is fixedly connected to the baffle (2), the right end of the first spring (7) is fixedly connected with the protective shell (4), the upper wall and the lower wall of the protective shell (4) are both provided with sliding grooves (8), the sliding frame (5) is slidably connected with the protective shell (4) through the sliding grooves (8), the two sides of the sliding frame (5) are both provided with rotary tables (10), the upper end and the lower end of each rotary table (10) are both fixedly connected with bar-shaped clamping blocks (11), the top ends of the bar-shaped clamping blocks (11) positioned at the upper end of the rotary table (10) are fixedly connected with arc-shaped sliding blocks (12), the right side of the rotary table (10) is provided with a sliding block (13), the rotary table (13), the slide block (13) is fixedly connected with one side of the protective shell (4) through a fixed rod (14) and is connected with a fixed rod (14), a tubular sliding groove (16) is formed in the outer wall (14) of the keyhole, a hollow cylinder (17) is connected in the tubular sliding groove (16) in a rotating mode, a security component (18) is arranged in the hollow cylinder (17), and the hollow cylinder (17) is fixedly connected with a handle (19);

a stop block (9) is arranged in the middle of the upper wall and the lower wall of the sliding frame (5), and the stop block (9) is in sliding contact with a strip-shaped clamping block (11);

the right side wall of the sliding block (13) is an arc-shaped outer wall, and second ratchets (122) are uniformly distributed on the right side wall of the sliding block (13);

first ratchets (121) matched with the arc sliding block are uniformly distributed on the inner side of the arc sliding block (12);

a connecting rod (131) is hinged to the left side wall of the sliding block (13), the connecting rod (131) is hinged to a cylinder on the surface of a gear (132), the gear (132) is fixed to the inner wall of the lower side of the protective shell (4) through a supporting rod (133), a rack (134) is meshed at the left end of the gear (132), and the rack (134) penetrates through the outer wall (14) of the keyhole and is fixedly connected with the security and protection component (18);

a square groove (101) is formed in the center of the turntable (10), the square groove (101) penetrates through the turntable (10), a hollow rotating block (102) is fixedly installed in the square groove (101), and two ends of the rotating block (102) are fixedly connected with the outer wall of one side, away from the handle (19), of the hollow cylinder (17);

security protection subassembly (18) are including fixed disc (181), second spring (182), first spiral slider (183) and second spiral slider (184), recess (185) have been seted up to fixed disc (181) upper end, fixed disc (181) are close to fixed connection second spring (182) on handle (19) one side outer wall, the other end and second spiral slider (184) fixed connection of second spring (182), second spiral slider (184) upper end is equipped with convex inserted block (186), inserted block (186) and recess (185) match, the helicoid of second spiral slider (184) and the helicoid sliding connection of first spiral slider (183).

2. The security door lock of claim 1, wherein: the left end of the sliding frame (5) is provided with a buckle (501), and the buckle (501) is connected to the connecting block (3) in a clamping mode.

3. The security door lock according to claim 1, characterized in that: and a torsion spring (20) is fixedly installed on one side, far away from the handle (19), of the keyhole outer wall (14).

4. The security door lock of claim 1, wherein: rectangular through holes are formed in the centers of the fixed disc (181), the first spiral sliding block (183) and the second spiral sliding block (184).