CN106761041B - Locking mechanism of crank lock with two locking states - Google Patents
Locking mechanism of crank lock with two locking states Download PDFInfo
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- CN106761041B CN106761041B CN201710054654.6A CN201710054654A CN106761041B CN 106761041 B CN106761041 B CN 106761041B CN 201710054654 A CN201710054654 A CN 201710054654A CN 106761041 B CN106761041 B CN 106761041B
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- lock
- tongue
- locking
- base
- lock tongue
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/52—Other locks for chests, boxes, trunks, baskets, travelling bags, or the like
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/10—Bolts of locks or night latches
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Lock And Its Accessories (AREA)
Abstract
A locking mechanism of a crank lock with two locking states has a true lock state and a false lock state and comprises an unlocking button, a lock cylinder, a rotary lock tongue and a bird tongue assembly; the unlocking button comprises a button part and is provided with a lock cylinder, and the front part of the unlocking button is hinged below the base; the rotary lock tongue is rotationally connected below the unlocking button and is connected with the lock cylinder, and a protruding part is arranged on the rotary lock tongue; the bird tongue component is assembled with the unlocking button and provided with a lock tongue head, a small lock plate is rotationally arranged behind the seat body and is abutted against the inclined plane, and the small lock plate is extruded downwards by rotating the lock tongue to drive the bird tongue component to rotate backwards and retract to the lock tongue head; the locking end of the handle is provided with a lock hole corresponding to the head of the lock tongue; the limiting pin is positioned below the rotating lock tongue and limits the leaning of the rotating lock tongue; according to the invention, through the design of the false lock state, repeated use of a key for unlocking and opening the door is avoided, and the door can be locked by using a key real lock after the work is finished, so that the work smoothness and convenience are improved, and the work efficiency is greatly improved.
Description
Technical Field
The invention relates to a lock, in particular to a locking mechanism of a crank lock, which comprises a straight pull type crank lock and a rotary type crank lock, is suitable for locking doors, cabinets and other objects, and is particularly suitable for locking an electrical control cabinet.
Background
The crank lock is widely applied to the fields of industrial cabinets, engineering mechanical equipment, communication, medical technology, refrigeration, food industry, environmental technology, rail locomotives and the like due to the advantages of small occupied space and high protection level. The existing commonly used crank lock comprises a base and a handle, wherein a locking mechanism is arranged between the handle and the base, and the handle is locked on the base in a locking state; when the door is opened, the following three steps are needed: firstly, unlocking a locking mechanism between a handle and a base, and pulling the handle away from the base; secondly, rotating the handle in a state that the handle is away from the base, and rotating the handle clockwise or anticlockwise by 90 degrees to unlock the crank lock; and thirdly, opening the door. The prior art has the following defects: this current crank lock is closed the door at every turn and is accomplished the locking promptly, if need open the cabinet door once more and must carry out the unblock with the key and just open, and in daily work, take electrical control cabinet as an example, operating personnel often need come and go to a plurality of different electrical control cabinets within a period, involve frequent cubical switchboard door action, owing to all need the reuse key to unblock again after closing the door at every turn, consequently lead to the smoothness nature and the convenience of work to discount greatly, bring adverse effect to work efficiency.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a subject to be studied and solved by the present invention.
Disclosure of Invention
The invention aims to provide a locking mechanism of a crank lock with two locking states.
In order to achieve the purpose, the invention adopts the technical scheme that:
a locking mechanism for a crank lock having two locking states, the crank lock comprising a handle, a locking mechanism and a base; the front end of the handle is a rotating end and is rotationally connected with the front end of the base, and the rear end of the handle is a locking end; the locking mechanism is arranged at the rear end of the base and matched with the locking end of the handle to lock and unlock the handle;
the locking mechanism comprises an unlocking button, a lock cylinder, a rotary lock tongue and a bird tongue assembly;
the unlocking button is assembled at the rear end of the base, the rear part of the unlocking button is a button part, a first spring is supported and arranged below the button part, and the lower end of the first spring is abutted against and acts on the base; the middle part of the unlocking button is provided with an assembly cavity, and the assembly cavity is used for rotatably assembling the lock cylinder; the front part of the unlocking button extends downwards to form a front side wall, the lower end of the front side wall is hinged below the base, and the hinge point is a first hinge point;
the rotary lock tongue is rotationally connected below the unlocking button, is connected with the lock cylinder and is driven by the lock cylinder to rotate in the horizontal direction; the periphery of the rotary lock tongue is horizontally and convexly provided with a convex part, and when the rotary lock tongue rotates, the convex part becomes a driving end part;
the bird tongue assembly is arranged below the unlocking button and comprises a base body, the rear part of the base body is abutted against the lower part of the rotating lock tongue, and the middle part of the base body is hinged to the lower part of the base to form a lever structure which can rotate forwards or backwards in the base along the vertical direction;
the front part of the seat body is erected upwards and attached to the inner side of the front side wall of the unlocking button, the front part of the seat body is also provided with a lock tongue head forwards, the front side wall of the unlocking button is provided with a through hole corresponding to the lock tongue head, and when the seat body rotates forwards, the lock tongue head extends forwards out of the through hole to achieve the assembly of the bird tongue assembly and the unlocking button;
a second spring is supported and arranged below the rear part of the seat body, the lower end of the second spring is abutted against and acts on the base, so that the seat body keeps the trend of forward rotation, and the head part of the lock tongue keeps the state of extending out of the through hole;
a small locking plate is rotatably arranged behind the rear part of the seat body, a rotating shaft of the small locking plate is horizontally positioned at the rear part of the seat body along the front-back direction, and a sheet-shaped main body forming the small locking plate is attached to the seat body and positioned in the front-back direction; the head of the small locking plate is arranged upwards corresponding to the rotary locking tongue, and the first rotary side of the small locking plate is provided with a propping inclined plane corresponding to the protruding part of the rotary locking tongue, so that when the rotary locking tongue is unlocked and rotated, the propping inclined plane of the small locking plate can be propped and extruded through the protruding part, the small locking plate is driven to move downwards, and then the seat body of the bird tongue assembly is driven to rotate backwards, so that the head of the locking tongue of the seat body is retracted into the through hole;
the small locking plate is characterized by also comprising a resetting elastic strip, wherein one end of the resetting elastic strip is fixed relative to the base, and the other end of the resetting elastic strip is abutted against the first rotating side acting on the small locking plate, so that when the small locking plate is rotated and locked, the small locking plate firstly overcomes the elastic force of the resetting elastic strip to rotate after the small locking plate is stirred by the protruding part of the rotating locking plate, and then the small locking plate is stirred by the elastic force of the resetting elastic strip to recover the initial position; and the elasticity of the reset elastic strip is smaller than that of the second spring;
the locking end of the handle is provided with a lock hole corresponding to the lock tongue head of the bird tongue assembly, and when the lock tongue head extends out of the through hole and extends into the lock hole, the locking end of the handle is locked on the base by the bird tongue assembly so as to lock the handle; when the head of the lock tongue retracts into the through hole and leaves the lock hole, the locking end of the handle is unlocked from the base by the bird tongue assembly, and then the handle is unlocked;
the limiting pin is positioned in the base and is positioned below the rotating lock tongue; when the rotary lock tongue is locked and rotated, a first limiting part below the rotary lock tongue is rotated to be aligned with the limiting pin in the vertical direction, so that the rotary lock tongue is abutted against the limiting pin, and the button part of the unlocking button is prevented from moving downwards, so that the lock tongue head of the bird tongue assembly is kept in a lock hole at the locking end of the handle, and the locking state of the lock tongue is kept;
through the structural composition design, the locking mechanism has a true locking state and a false locking state;
in a true lock state, the first limiting part of the rotary lock tongue and the limiting pin form alignment, and the unlocking button cannot be pressed down; under the false lock state, the first spacing portion of rotating the spring bolt with the spacer pin constitutes the abdication, the unblock button can be pressed.
The relevant content in the above technical solution is explained as follows:
1. in the above aspect, the button portion may be configured to be pressed down by the first spring, and may be restored to the original position by the elastic force of the first spring.
2. In the above solution, when the button portion of the unlock button is pressed, the middle portion and the rear portion of the unlock button will rotate backward around the first hinge point, that is, displace toward the bottom of the base.
3. In the above scheme, the bird tongue assembly and the unlocking button are assembled, so that when the unlocking button rotates, the base body of the bird tongue assembly rotates together.
4. In the above scheme, the reset elastic strip is specifically a reset steel wire, and can also be other elastic articles with the same function, such as a reed and the like.
5. In the above scheme, "when the rotation latch bolt locks and rotates", namely, when the handle is locked in a true lock state.
6. In the above scheme, the elastic force of the reset elastic strip is smaller than the elastic force of the second spring, so that when the rotating lock tongue is rotated for locking, the small lock plate cannot overcome the elastic force of the second spring to move downwards, but overcomes the elastic force of the reset elastic strip to be stirred and rotated.
7. In the above scheme, a groove is formed in the first rotating side of the small locking plate, and the groove is used for the reset elastic strip to abut against and be positioned. Borrow this design, can guarantee that the elastic strip that resets acts on the first rotation side of little locking plate all the time, and can not break away from little locking plate.
8. In the above scheme, the middle part of the base body of the bird tongue assembly is hinged below the base, and the hinge point is the first hinge point or the second hinge point. When the second hinge point is another, the assembly of all parts of the crank lock during production can be facilitated.
9. In the above scheme, a second limiting part is further arranged below the rotary lock tongue and corresponding to the base body of the bird tongue assembly, and when the rotary lock tongue rotates to the first limiting part and is aligned with the limiting pin, the second limiting part abuts against the base body of the bird tongue assembly to limit the bird tongue assembly to rotate backwards.
The working principle and the advantages of the invention are as follows:
the invention relates to a locking mechanism of a crank lock with two locking states, which has a true locking state and a false locking state and comprises an unlocking button, a lock cylinder, a rotary lock tongue and a bird tongue assembly; the unlocking button comprises a button part and is provided with a lock cylinder, and the front part of the unlocking button is hinged below the base; the rotary lock tongue is rotationally connected below the unlocking button and is connected with the lock cylinder, and a protruding part is arranged on the rotary lock tongue; the bird tongue component is assembled with the unlocking button and provided with a lock tongue head, a small lock plate is rotationally arranged behind the seat body and is abutted against the inclined plane, and the small lock plate is extruded downwards by rotating the lock tongue to drive the bird tongue component to rotate backwards and retract to the lock tongue head; the locking end of the handle is provided with a lock hole corresponding to the head of the lock tongue; the limiting pin is positioned below the rotating lock tongue and limits the leaning of the rotating lock tongue; according to the invention, through the design of the false lock state, an operator does not need to unlock the door by using a key after closing the door every time, the unlocking of the door can be realized by only pressing the unlocking button, and the locking mechanism can be enabled to enter the true lock state by using the key after the operation is finished. Compared with the prior art, the invention improves the smoothness and convenience of work, thereby greatly improving the work efficiency.
Drawings
FIG. 1 is an exploded first exploded perspective view of an embodiment of the present invention;
FIG. 2 is an exploded perspective view of an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention during a true lock state lock;
FIG. 4 is a schematic cross-sectional view of an embodiment of the present invention during true lock locking;
FIG. 5 is a bottom view of an embodiment of the present invention in a true lock state;
FIG. 6 is a schematic structural diagram of an unlocked state according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of an embodiment of the invention in an unlocked state with the bolt head retracted;
fig. 8 is a schematic cross-sectional view of an embodiment of the invention with the bolt head in an unlocked state extended;
FIG. 9 is a bottom view schematic illustration of an unlocked state of an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of an embodiment of the present invention during locking in a pseudo-lock state;
FIG. 11 is a cross-sectional view of a pseudo lock state lock according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a pseudo lock state unlocking operation according to an embodiment of the present invention;
fig. 13 is a schematic cross-sectional view of the pseudo lock state unlocking according to the embodiment of the invention.
In the above drawings: 1. a handle; 2. a base; 3. a rotating end; 4. a locking end; 5. a pivot; 6. a torsion spring; 7. a slider; 8. a connecting rod; 9. an unlock button; 10. a lock cylinder; 11. rotating the lock tongue; 12. a button portion; 13. a first spring; 14. an assembly chamber; 15. a front side wall; 16. a first hinge point; 17. a boss portion; 18. a base body; 19. a second hinge point; 20. a bolt head; 21. a through hole; 22. a second spring; 23. a small locking plate; 24. a rotating shaft; 25. a first rotational side; 26. abutting against the inclined surface; 27. resetting the steel wire; 28. a trench; 29. a lock hole; 30. a spacing pin; 31. a first limiting part; 32. a second rotational side.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): as shown in FIGS. 1 to 13, a locking mechanism of a crank lock having two locking states,
the crank lock comprises a handle 1, a locking mechanism and a base 2; the front end of the handle 1 is a rotating end 3 which is rotatably connected to the front end of the base 2, and the rear end of the handle 1 is a locking end 4; the locking mechanism is arranged at the rear end of the base 2 and is matched with the locking end 4 of the handle 1 to lock and unlock the handle 1; the rotating end 3 of the handle 1 is rotatably connected to the base 2 through a pivot 5, a torsion spring 6 is sleeved on the pivot 5, and the torsion spring 6 acts between the handle 1 and the base 2 to enable the locking end 4 of the handle 1 to have a tendency of being lifted upwards; a sliding block 7 is arranged in the base 2, and the sliding block 7 is connected with the base 2 in a sliding manner; the upper end of the connecting rod 8 is hinged to the middle of the handle 1, and the lower end of the connecting rod 8 is hinged to the front end of the sliding block 7, so that when the handle 1 is lifted, the upper end of the connecting rod 8 is lifted together, and meanwhile, the lower end of the connecting rod 8 drives the sliding block 7 to slide backwards on the base 2; the sliding block 7 is in transmission connection with a lock rod structure of the cabinet door, so that when the sliding block 7 slides, the lock rod structure can be driven to open and close the cabinet door.
The locking mechanism comprises an unlocking button 9, a lock cylinder 10, a rotary bolt 11 and a bird bolt assembly;
the unlocking button 9 is assembled at the rear end of the base 2, the rear part of the unlocking button 9 is a button part 12, a first spring 13 is supported and arranged below the button part 12, the lower end of the first spring 13 is abutted against and acted on the base 2, and the button part 12 can be pressed down and can return through the elastic force of the first spring 13; the middle part of the unlocking button 9 is provided with an assembly cavity 14, and the assembly cavity 14 is used for rotatably assembling the lock cylinder 10; the front part of the unlocking button 9 extends downwards to form a front side wall 15, the lower end of the front side wall 15 is hinged below the base 2, and the hinged point is a first hinged point 16; when the button portion 12 is pressed, the middle and rear portions of the unlock button 9 will be displaced toward the bottom of the base 2 around the first hinge point 16.
The rotary bolt 11 is rotationally connected below the unlocking button 9, is connected with the lock cylinder 10 and is driven by the lock cylinder 10 to rotate in the horizontal direction; the outer circumference of the rotary latch 11 is horizontally protruded with a protrusion 17, and when the rotary latch 11 rotates, the protrusion 17 becomes a driving end.
The bird tongue assembly is arranged below the unlocking button 9 and comprises a base body 18, the rear portion of the base body 18 abuts against the lower portion of the rotating bolt 11, the middle portion of the base body 18 is hinged to the lower portion of the base 2, and the hinge point is a second hinge point 19 to form the base body 18 into a lever structure which can rotate forwards or backwards in the base 2 along the vertical direction.
The front part of the seat body 18 is erected upwards and attached to the inner side of the front side wall 15 of the unlocking button 9, the front part of the seat body 18 is also provided with a bolt head part 20 forwards, the front side wall 15 of the unlocking button 9 is provided with a through hole 21 corresponding to the bolt head part 20, when the seat body 18 rotates forwards, the bolt head part 20 extends forwards out of the through hole 21, the assembly of the bird tongue component and the unlocking button 9 is achieved, and the seat body 18 of the bird tongue component rotates together when the unlocking button 9 rotates.
A second spring 22 is supported below the rear portion of the seat body 18, and the lower end of the second spring 22 abuts against and acts on the base 2, so that the seat body 18 keeps the trend of forward rotation, and the bolt head 20 keeps the state of extending out of the through hole 21.
A small locking plate 23 is rotatably arranged at the rear part of the seat body 18, a rotating shaft 24 of the small locking plate 23 is horizontally positioned at the rear part of the seat body 18 along the front-back direction, and a sheet main body forming the small locking plate 23 is attached to the seat body 18 in the front-back direction for positioning; the head of little locking plate 23 upwards corresponds rotation spring bolt 11 sets up to the bellying 17 that the first rotation side 25 of little locking plate 23 corresponds rotation spring bolt 11 is equipped with one and supports and lean on inclined plane 26, in order when rotation spring bolt 11 carries out the unblock rotation, can support through bellying 17 to leaning on inclined plane 26 of little locking plate 23 and support and lean on the extrusion, thereby the drive little locking plate 23 displacement downwards, and then drive the pedestal 18 rearward rotation of bird tongue subassembly, in order to make the pedestal 18 spring bolt head 20 retracts through-hole 21.
The locking device further comprises a reset steel wire 27, one end of the reset steel wire 27 is fixed relative to the base 2, and the other end of the reset steel wire 27 abuts against the first rotating side 25 of the small locking plate 23, so that when the locking bolt 11 is rotated to be locked, the small locking plate 23 overcomes the elastic force of the reset steel wire 27 to rotate after the protruding portion 17 of the locking bolt 11 is rotated to stir the small locking plate 23, and then the small locking plate 23 is stirred through the elastic force of the reset steel wire 27 to restore the initial position; and, the elastic force of the reset wire 27 is smaller than that of the second spring 22, so that when the swing bolt 11 is locked and rotated, the small locking piece 23 is not downwardly displaced against the elastic force of the second spring 22 but is rotated against the elastic force of the reset wire 27. A groove 28 is opened on the first rotating side 25 of the small locking plate 23, and the groove 28 is used for the reset wire 27 to abut against and position. By this design it can be ensured that the reset wire 27 always acts on the first turning side 25 of the small locking tab 23 without disengaging from the small locking tab 23.
The locking end 4 of the handle 1 is provided with a lock hole 29 corresponding to the bolt head 20 of the bird tongue assembly, and when the bolt head 20 extends out of the through hole 21 and extends into the lock hole 29, the locking end 4 of the handle 1 is locked on the base 2 by the bird tongue assembly, so that the handle 1 is locked; when latch bolt head 20 is retracted into bore 21 and out of locking hole 29, locking end 4 of handle 1 is unlocked from base 2 by the bird's tongue assembly, thereby unlocking handle 1.
The lock further comprises a limiting pin 30, wherein the limiting pin 30 is positioned in the base 2 and is positioned below the rotary lock tongue 11; when the rotary latch 11 is locked and rotated, a first position-limiting portion 31 below the rotary latch 11 is rotated to be aligned with the position-limiting pin 30 in the vertical direction, so that the rotary latch 11 abuts against the position-limiting pin 30, and the button portion 12 of the unlocking button 9 is prevented from moving downwards, so as to keep the latch head 20 of the bird-tongue assembly in the lock hole 29 of the locking end 4 of the handle 1 and keep the lock state.
Through the structural composition design, the locking mechanism has a true locking state and a false locking state;
in a locking state of a true locking state, the handle 1 is locked on the base 2 by the locking mechanism; the lock tongue head 20 of the bird tongue assembly extends into the lock hole 29 of the locking end 4 of the handle 1, and the bird tongue assembly is limited by the unlocking button 9; the rotary bolt 11 below the unlocking button 9 is limited by the limiting pin 30 in the vertical direction to form a structure that the unlocking button 9 is limited in the vertical direction;
during unlocking, the lock cylinder 10 is rotated in a forward direction (clockwise rotation is performed by 90 degrees), the lock cylinder 10 drives the rotary lock tongue 11 to rotate, the first limiting part 31 of the rotary lock tongue 11 and the limiting pin 30 form abdication to obtain a condition of displacement in a vertical direction, meanwhile, the bulge part 17 of the rotary lock tongue 11 extrudes the abutting inclined surface 26 of the small lock plate 23 on the bird tongue assembly, and at the moment, the second rotating side 32 of the small lock plate 23 is limited by the seat body 18 of the bird tongue assembly, so that downward displacement can only be performed in the vertical direction, the seat body 18 is driven to rotate backwards, the lock tongue head 20 forming the bird tongue assembly retracts backwards, the lock tongue head is separated from the lock hole 29 at the locking end 4 of the handle 1, and the handle 1 is unlocked; the locking end 4 of the handle 1 will automatically lift upwards due to the torsion spring 6 arranged in the rotating end 3 of the handle 1;
when the rotary lock tongue 11 rotates to the unlocking position, the first limiting part 31 of the rotary lock tongue 11 keeps yielding with the limiting pin 30, and the bulge 17 of the rotary lock tongue 11 finishes extruding the small lock plate 23 and rotates to the second rotating side 32 of the small lock plate 23; at this time, due to the action of the second spring 22, the seat body 18 of the bird tongue assembly will rotate forward again, so that the bolt head 20 protrudes out of the through hole 21 of the unlocking button 9 again; the locking mechanism enters a false locking state;
in the false locking state of the locking mechanism, when the handle 1 is pressed down, the locking end 4 of the handle 1 is locked with the bird tongue assembly again; when the locking end 4 of the handle 1 descends to contact with the latch bolt head 20 of the bird tongue assembly, the seat body 18 of the bird tongue assembly is forced to rotate backwards and compress the second spring 22, when the locking end 4 of the handle 1 descends to align with the latch bolt head 20 of the bird tongue assembly, the elastic force of the second spring 22 drives the seat body 18 to rotate forwards, and the latch bolt head 20 and the latch bolt head 29 are locked; the locking state is a false locking state;
when the locking state of the false lock state needs to be unlocked, the button part 12 of the unlocking button 9 is pressed, and because the first limiting part 31 of the rotary lock tongue 11 keeps yielding with the limiting pin 30, the middle part and the rear part of the unlocking button 9 move towards the bottom of the base 2 around the first hinge point 16 and drive the base body 18 of the bird tongue assembly to rotate backwards, the lock tongue head part 20 of the bird tongue assembly retracts backwards, and is separated from the lock hole 29 at the locking end 4 of the handle 1, so that the handle 1 is unlocked; the unlocking state is a false locking state;
when the locking mechanism needs to be converted into a locking state of a true lock state, no matter whether the handle 1 is lifted or not, the lock cylinder 10 is rotated in a reverse direction (rotated by 90 degrees counterclockwise), the rotary bolt 11 is driven to rotate reversely to the initial position through the lock cylinder 10, the first limiting part 31 of the rotary bolt 11 is aligned with the limiting pin 30 again, and the unlocking button 9 cannot be displaced downwards by pressing the button part 12; meanwhile, the boss 17 of the rotary lock tongue 11 extrudes the second rotary side 32 of the small lock plate 23, so that the small lock plate 23 is forced to overcome the elastic force of the reset steel wire 27 to rotate, and the boss 17 of the rotary lock tongue 11 is abducted, so that the boss 17 rotates to the first rotary side 25 of the small lock plate 23; due to the action of the second spring 22, the bolt head 20 of the bird's tongue assembly always remains locked to the locking end 4 of the handle 1; if the handle 1 is lifted, after the locking mechanism enters a true lock state, the handle 1 is pressed down to be locked with the bird tongue assembly, so that the locking mechanism can enter the locking state of the true lock state; as before the handle 1 is closed, the locking mechanism enters the locked state of the true lock state after it enters the true lock state.
The invention relates to a locking mechanism of a crank lock with two locking states, which has a true locking state and a false locking state and comprises an unlocking button, a lock cylinder, a rotary lock tongue and a bird tongue assembly; the unlocking button comprises a button part and is provided with a lock cylinder, and the front part of the unlocking button is hinged below the base; the rotary lock tongue is rotationally connected below the unlocking button and is connected with the lock cylinder, and a bulge is arranged on the rotary lock tongue; the bird tongue component is assembled with the unlocking button and provided with a lock tongue head, a small lock plate is rotationally arranged behind the seat body and is abutted against the inclined plane, and the small lock plate is extruded downwards by rotating the lock tongue to drive the bird tongue component to rotate backwards and retract to the lock tongue head; the locking end of the handle is provided with a lock hole corresponding to the head of the lock tongue; the limiting pin is positioned below the rotating lock tongue and limits the leaning of the rotating lock tongue; according to the invention, through the design of the false lock state, an operator does not need to unlock the door by using a key after closing the door every time, the unlocking of the door can be realized by only pressing the unlocking button, and the locking mechanism can be enabled to enter the true lock state by using the key after the operation is finished. Compared with the prior art, the invention improves the smoothness and convenience of work, thereby greatly improving the work efficiency.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. A locking mechanism for a crank lock having two locking states, the crank lock comprising a handle, a locking mechanism and a base; the front end of the handle is a rotating end and is rotationally connected with the front end of the base, and the rear end of the handle is a locking end; the locking mechanism is arranged at the rear end of the base and matched with the locking end of the handle to lock and unlock the handle; the method is characterized in that: the locking mechanism comprises an unlocking button, a lock cylinder, a rotary lock tongue and a bird tongue assembly;
the unlocking button is assembled at the rear end of the base, the rear part of the unlocking button is a button part, a first spring is supported and arranged below the button part, and the lower end of the first spring is abutted against and acts on the base; the middle part of the unlocking button is provided with an assembly cavity, and the assembly cavity is used for rotatably assembling the lock cylinder; the front part of the unlocking button extends downwards to form a front side wall, the lower end of the front side wall is hinged below the base, and the hinge point is a first hinge point;
the rotary lock tongue is rotationally connected below the unlocking button, is connected with the lock cylinder and is driven by the lock cylinder to rotate in the horizontal direction; the periphery of the rotary lock tongue is horizontally and convexly provided with a convex part, and when the rotary lock tongue rotates, the convex part becomes a driving end part;
the bird tongue assembly is arranged below the unlocking button and comprises a base body, the rear part of the base body is abutted against the lower part of the rotating lock tongue, and the middle part of the base body is hinged to the lower part of the base to form a lever structure which can rotate forwards or backwards in the base along the vertical direction;
the front part of the seat body is erected upwards and attached to the inner side of the front side wall of the unlocking button, the front part of the seat body is also provided with a lock tongue head forwards, the front side wall of the unlocking button is provided with a through hole corresponding to the lock tongue head, and when the seat body rotates forwards, the lock tongue head extends forwards out of the through hole to achieve the assembly of the bird tongue assembly and the unlocking button;
a second spring is supported and arranged below the rear part of the seat body, the lower end of the second spring is abutted against and acts on the base, so that the seat body keeps the trend of forward rotation, and the head part of the lock tongue keeps the state of extending out of the through hole;
a small locking plate is rotatably arranged behind the rear part of the seat body, a rotating shaft of the small locking plate is horizontally positioned at the rear part of the seat body along the front-back direction, and a sheet-shaped main body forming the small locking plate is attached to the seat body and positioned in the front-back direction; the head of the small locking plate is arranged upwards corresponding to the rotary locking tongue, and the first rotary side of the small locking plate is provided with a propping inclined plane corresponding to the protruding part of the rotary locking tongue, so that when the rotary locking tongue is unlocked and rotated, the propping inclined plane of the small locking plate can be propped and extruded through the protruding part, the small locking plate is driven to move downwards, and then the seat body of the bird tongue assembly is driven to rotate backwards, so that the head of the locking tongue of the seat body is retracted into the through hole;
the small locking plate is characterized by also comprising a resetting elastic strip, wherein one end of the resetting elastic strip is fixed relative to the base, and the other end of the resetting elastic strip is abutted against the first rotating side acting on the small locking plate, so that when the small locking plate is rotated and locked, the small locking plate firstly overcomes the elastic force of the resetting elastic strip to rotate after the small locking plate is stirred by the protruding part of the rotating locking plate, and then the small locking plate is stirred by the elastic force of the resetting elastic strip to recover the initial position; and the elasticity of the reset elastic strip is smaller than that of the second spring;
the locking end of the handle is provided with a lock hole corresponding to the lock tongue head of the bird tongue assembly, and when the lock tongue head extends out of the through hole and extends into the lock hole, the locking end of the handle is locked on the base by the bird tongue assembly so as to lock the handle; when the head of the lock tongue retracts into the through hole and leaves the lock hole, the locking end of the handle is unlocked from the base by the bird tongue assembly, and then the handle is unlocked;
the limiting pin is positioned in the base and is positioned below the rotating lock tongue; when the rotary lock tongue is locked and rotated, a first limiting part below the rotary lock tongue is rotated to be aligned with the limiting pin in the vertical direction, so that the rotary lock tongue is abutted against the limiting pin, and the button part of the unlocking button is prevented from moving downwards, so that the lock tongue head of the bird tongue assembly is kept in a lock hole at the locking end of the handle, and the locking state of the lock tongue is kept;
through the structural composition design, the locking mechanism has a true locking state and a false locking state;
in a true lock state, the first limiting part of the rotary lock tongue and the limiting pin form alignment, and the unlocking button cannot be pressed down; under false lock state, the first spacing portion of rotating the spring bolt with the spacer pin constitutes the abdicating, unlock button can be pressed.
2. The locking mechanism of claim 1, wherein: a groove is formed in the first rotating side of the small locking plate, and the groove is used for enabling the reset elastic strip to be abutted to be positioned.
3. The locking mechanism of claim 1, wherein: the middle part of the base body of the bird tongue assembly is hinged below the base, and the hinged point is the first hinged point or the other second hinged point.
4. The locking mechanism of claim 1, wherein: the lower part of the rotary lock tongue is provided with a second limiting part corresponding to the base body of the bird tongue assembly, and when the rotary lock tongue rotates to the first limiting part and is aligned with the limiting pin, the second limiting part is abutted against the base body of the bird tongue assembly to limit the bird tongue assembly to rotate backwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054654.6A CN106761041B (en) | 2017-01-24 | 2017-01-24 | Locking mechanism of crank lock with two locking states |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054654.6A CN106761041B (en) | 2017-01-24 | 2017-01-24 | Locking mechanism of crank lock with two locking states |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761041A CN106761041A (en) | 2017-05-31 |
| CN106761041B true CN106761041B (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710054654.6A Active CN106761041B (en) | 2017-01-24 | 2017-01-24 | Locking mechanism of crank lock with two locking states |
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| Country | Link |
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| CN (1) | CN106761041B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203603630U (en) * | 2013-12-17 | 2014-05-21 | 苏州德仕耐五金技术有限公司 | Straight pull type crank lock |
| CN104533183A (en) * | 2014-12-23 | 2015-04-22 | 江门市嘉铭五金制品有限公司 | Mortise lock |
| CN205100671U (en) * | 2015-11-24 | 2016-03-23 | 苏州德仕耐五金技术有限公司 | Spring bolt automatic re -setting structure |
| CN206487263U (en) * | 2017-01-24 | 2017-09-12 | 苏州德仕耐五金技术有限公司 | A kind of locking mechanism of the crank handle lock with two kinds of lock-out states |
-
2017
- 2017-01-24 CN CN201710054654.6A patent/CN106761041B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203603630U (en) * | 2013-12-17 | 2014-05-21 | 苏州德仕耐五金技术有限公司 | Straight pull type crank lock |
| CN104533183A (en) * | 2014-12-23 | 2015-04-22 | 江门市嘉铭五金制品有限公司 | Mortise lock |
| CN205100671U (en) * | 2015-11-24 | 2016-03-23 | 苏州德仕耐五金技术有限公司 | Spring bolt automatic re -setting structure |
| CN206487263U (en) * | 2017-01-24 | 2017-09-12 | 苏州德仕耐五金技术有限公司 | A kind of locking mechanism of the crank handle lock with two kinds of lock-out states |
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| Publication number | Publication date |
|---|---|
| CN106761041A (en) | 2017-05-31 |
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