CN104234536B - Door lock inserting prevention structure - Google Patents

Door lock inserting prevention structure Download PDF

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Publication number
CN104234536B
CN104234536B CN201410439304.8A CN201410439304A CN104234536B CN 104234536 B CN104234536 B CN 104234536B CN 201410439304 A CN201410439304 A CN 201410439304A CN 104234536 B CN104234536 B CN 104234536B
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China
Prior art keywords
tongue
latch bolt
plug
lock
step surface
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CN201410439304.8A
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CN104234536A (en
Inventor
吕策
余开军
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SICHUAN WANGLI SECURITY PRODUCTS Co Ltd
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SICHUAN WANGLI SECURITY PRODUCTS Co Ltd
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Publication of CN104234536A publication Critical patent/CN104234536A/en
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Abstract

The invention relates to a door lock inserting prevention structure. A position limiting structure is respectively in contact with a higher-stage step surface and a lower-stage step surface in the process of performing to-and-fro movement along with an inserting prevention bolt in a lock-out direction or a retraction direction, i.e., the position limiting structure respectively acts on the higher-stage step surface and the lower-stage step surface, so that the end parts of an inserting prevention swinging rod are respectively positioned at two different heights, when the position limiting structure acts on the lower-stage step surface, and the front end of the inserting prevention swinging rod is butted against the back end of an inclined bolt, so that the inclined bolt cannot backwards retract, and an inserting prevention effect is achieved. Compared with the prior art in which the design mode that the swinging height of the inserting prevention swinging rod is limited through rotating a bent rod arranged on the inserting prevention bolt in a fixed interval in the process of retracting along with the inserting prevention bolt is adopted, the door lock inserting prevention structure adopts the design mode of acting the position limiting structure onto the higher-stage step surface and the lower-stage step surface of the inserting prevention swinging rod through displacement, and has the advantages that the structure is simple, the design is reasonable, and in addition, stability and reliability are realized.

Description

A kind of anti-inserting structure of door lock
Technical field
The present invention relates to a kind of anti-inserting structure of door lock, belongs to mechanical lock field.
Background technology
Commonly used door lock, in order to can be automatic locking when closing the door, dead bolt typically can be using towards closing the door The latch bolt in direction, in interior pushing, the bevel direction of door lock skew bolt be all towards exterior, so under the state of locking a door, by with The relatively thin article insertion crack between a door and its frame such as hard paper, card, promotes latch bolt just to open door lock, therefore this door lock theftproof performance Differ from, there is potential safety hazard.
For the problem, Chinese patent literature CN202483259U discloses a kind of anti-plug of lock core and the anti-plug device of solution, Including latch bolt component, pushing plate, spring, anti-plate, anti-plug driving plate, anti-tongue (6), swinging plate, lock body shell;Latch bolt component, Spring, anti-plate, anti-tongue, swinging plate is assemblied on lock body shell;Sliding panel is assemblied on latch bolt component;Spring and anti-plate Concentric fits;Anti-plug driving plate (5) is assemblied on anti-tongue;There are the fixed block A for playing the role of positioning, fixed block B on lock body shell, consolidate Determine block C, there is terminal A, terminal B on spring, terminal A offsets with fixed block A;Anti- plate is mounted concentrically on fixed block B with spring, And rotated centered on fixed block B;There is raised A on anti-plate, the plane of raised A is higher than spring, another terminal B phase with spring Support;Raised A offsets with anti-plug driving plate.
There is following defect with the anti-plug device of solution in a kind of anti-plug of lock core of the patent document:
1st, in the patent document, anti-tongue is so allowed for anti-plug tongue and is oriented to by the prerotation vane pressure on doorframe Produce friction between piece, one easily damaging anti-tongue, and so as to cause service life to reduce, two carry out the power suffered by anti-tongue Direction be vertically with the direction of prerotation vane phase-contact surface, therefore the component of vertical direction can be produced, it is long then easily to cause to set Put the angle that driving plate on anti-tongue rotates inaccurate, so as to cause the rotational angle of driving plate excessive, need not prevent Driving plate props up latch bolt when slotting so that can not close the door, or even destroys anti-inserting structure and latch bolt structure, or the rotation of driving plate Angle too small, does not have anti-plug effect, therefore the door lock anti-plug effect of this structure is unreliable.
2nd, in the patent document, it is after rotation handle, with handle axle unitary rotation to release anti-plug using handle axle Swinging plate stir the sliding panel of top, sliding panel promotes again driving plate to rotate counterclockwise to release anti-plug in moving process, this The structure of the releasing anti-plug of sample is excessively complicated, and the requirement to installation, the precision of accessory size is very high, therefore in use, it is this It is unreliable that the Anti-inserting lock of structure releases anti-plug action.
The content of the invention
It is to be solved by this invention be the unreliable anti-inserting structure anti-plug effect of existing door lock, complex structure, to part The high technical problem of installation and the required precision of size, so as to provide a kind of safety and size rational in infrastructure, to part Required precision is not high and anti-plug effect reliable, a kind of anti-inserting structure of door lock of long service life.
To achieve these goals, the present invention provides a kind of door lock anti-inserting structure, including:
Latch bolt component, is installed in lock housing, including latch bolt and the latch bolt is had to locking out direction movement tendency First bias piece, the latch bolt can lock out the reciprocating motion of retraction;
Anti- tongue component, is installed in the lock housing, including anti-tongue, and the anti-tongue is had to locking out direction Second bias piece of movement tendency;
Anti-plug oscillating bar assembly, is installed between the latch bolt component and the anti-tongue component, including can be in the latch bolt The anti-plug fork being rotatably mounted in the lock housing is come and gone between the anti-tongue, and acts on the anti-plug fork On, its biasing force makes the anti-plug fork be rotated towards the latch bolt direction by the anti-tongue direction and props up the latch bolt retraction The 3rd bias piece in the lock housing;
The anti-tongue is provided with the position limiting structure for preventing the anti-plug fork from rotating to the latch bolt direction, and described During anti-tongue is retracted toward in the lock housing, the position limiting structure is released to the spacing of the anti-plug fork;
Plectrum component, with handle axle construction or lock core shaft's structural integrity linkage, promotes the anti-plug to put in rotary course Bar is turned at the anti-tongue by the latch bolt is propped up, and the biasing force of second bias piece makes the anti-tongue toward the side of locking out To motion, recover to the spacing of the anti-plug fork;
One-level step surface is formed with the side wall of one end end for propping up the latch bolt of the anti-plug fork towards described It is described with inclined plane transition between the step of latch bolt side, and the high one-level step surface and low one-level step surface of the step High one-level step surface and the low one-level step surface are one in front and one in back arranged along locking out direction, and the high one-level step surface is front, The position limiting structure is done along locking out during the back and forth movement of direction or retracted orientation with the anti-tongue, high by one with described respectively Level step surface, the low one-level step surface contact.
The position limiting structure is a limited impression being formed on the anti-tongue, the bottom surface of the limited impression respectively with The high one-level step surface, the low one-level step surface contact.
Locking out and guiding that retracted orientation is oriented to the anti-tongue is additionally provided between the anti-tongue and lock housing Structure.
The guide frame includes taking shape in the guide rail or guide groove in the lock housing, and the guide rail or guide groove are in the anti-plug The direction that lock out of tongue 22 is arranged, and fluted or projection is formed on the anti-tongue 22 to be slidably arranged in the guide rail or guide groove On.
The anti-tongue 22 is respectively provided on two sides with a slide protrusion 24 towards the base plate and cover plate of the lock housing, described Slide protrusion 24 is arranged in the guide groove in the lock housing.
The part of anti-tongue 22 stretches to the rear end of the latch bolt 11, so that the latch bolt 11 is promoted during locking The anti-tongue 22 is moved to direction is locked.
The plectrum component includes the first plectrum that same handle axle or lock core are together rotated, and is arranged on described first group Latch on piece, when unlocking, the latch promotes the other end of the anti-plug fork to rotate and makes the anti-plug fork towards solution Except the direction contradicted to the latch bolt rotates.
The anti-plug fork is in " S " type, the plectrum component also include that same handle axle or lock core together rotate in " 6 " word Second plectrum of type, skew bolt lock does well down, and the handle of dialling of second plectrum offsets with the end of the anti-plug fork, so that Second plectrum described in when unlocking is rotated and drives the anti-plug fork to rotate toward the conflict direction to the latch bolt is released.
The anti-plug oscillating bar assembly also includes the anti-plug steady pin being formed in lock housing, the anti-plug fork and the described 3rd Bias piece is set on the anti-plug steady pin.
3rd bias piece is fixed on the anti-plug fork for a pin, the torsion that another pin is fixed in lock housing Spring.
When also including being unlocked using key, key driven cylinder rotates the push rod so as to drive it to move along a straight line, described to push away Bar drives the plectrum component to rotate to unlocking direction in linear motion, so as to promote the anti-plug fork by propping up State and turned at the anti-tongue at latch bolt.
The motion path of the corresponding push rod of the plectrum component is formed with a protuberance, and the push rod was moving along a straight line Promote the protuberance in journey to drive the plectrum component to rotate to unlocking direction.
The above-mentioned technical proposal of the present invention has compared to existing technology advantages below:
(1) the anti-inserting structure of door lock of the invention, the position limiting structure does edge and lock out direction or retraction side with the anti-tongue To back and forth movement during, contact with the high one-level step surface, the low one-level step surface respectively, that is to say, by limit Bit architecture is respectively acting on the high one-level step surface and the low one-level step surface, so that the end difference of the anti-plug fork Positioned at two different height, when the position limiting structure acts on the low one-level step surface, the front end of the anti-plug fork Propping up the rear end of the latch bolt prevents the latch bolt from retreating, and so as to play anti-plug effect, position limiting structure is acted on by displacement The design of the high one-level step surface on anti-plug fork and low one-level step surface, compared in prior art by anti-tongue Knee with anti-tongue retraction during in fixed interval rotate limit anti-plug fork swing height design, tool There is simple structure, advantage reasonable in design and reliable and stable.
(2) the anti-inserting structure of door lock of the invention, is additionally provided between the anti-tongue and lock housing and the anti-tongue is lock out The guide frame being oriented to retracted orientation, and the anti-tongue has collective height with the latch bolt part, so that described Latch bolt promotes the anti-tongue to move to direction is locked during locking, during latch bolt is subject to door-plate extruding to lock, Anti- tongue is driven to be retracted into lock housing so that anti-plug fork is contacted with latch bolt rear end face, now anti-plug fork can not be rocked to latch bolt Rear end, so as to avoid anti-plug fork at closing time from upspringing to latch bolt rear end, causes situation about can not close the door to occur, and anti-tongue is logical The mode for crossing latch bolt promotion is locked, compared to the design locked by way of door-plate is extruded of the prior art, anti-plug The frictional force and vibrations that tongue is subject to greatly reduces, and so as to play a part of to avoid anti-tongue component vibrations from damaging, improves door lock Service life.
Description of the drawings
In order that present disclosure is more likely to be clearly understood, below in conjunction with the accompanying drawings, the present invention is made further in detail Thin explanation, wherein,
Fig. 1 is the structural representation before a kind of anti-inserting structure of door lock is closed the door in embodiment 1;
Fig. 2 is a kind of structural representation of door lock anti-inserting structure when locking after at closing time latch bolt is pressed down in embodiment 1, together When also show anti-plug fork towards latch bolt direction rotate;
Fig. 3 be close the door in embodiment 1 after latch bolt be ejected into a kind of structure of the anti-inserting structure of door lock in the latch bolt groove on door-plate Schematic diagram, while also show the rear end face for going to latch bolt of anti-plug fork;
Fig. 4 is a kind of structural representation of door lock anti-inserting structure when key opens the door used in embodiment 1;
Fig. 5 is a kind of structural representation of door lock anti-inserting structure when handle opens the door used in embodiment 1;
Fig. 6 is the structural representation of anti-plug fork in embodiment 1 and embodiment 2;
Fig. 7 is the structural representation of plectrum component in embodiment 1 and embodiment 2;
Fig. 8 is the structural representation of latch bolt in embodiment 1 and embodiment 2;
Fig. 9 be close the door in embodiment 2 after latch bolt be ejected into a kind of structure of the anti-inserting structure of door lock in the latch bolt groove on door-plate Schematic diagram, while also show the rear end face for going to latch bolt of anti-plug fork;
Figure 10 is a kind of structural representation of door lock anti-inserting structure when handle opens the door used in embodiment 2.
Description of reference numerals:1- latch bolt components;The anti-tongue components of 2-;3- anti-plug oscillating bar assemblies;4- plectrum components;5- is pushed away Bar;11- latch bolts;The bias pieces of 12- first;The bias pieces of 21- second;The anti-tongues of 22-;23- position limiting structures;24- slide protrusions;31- Anti-plug fork;The bias pieces of 32- the 3rd;- anti-plug steady pin;The high one-level step surfaces of 311-;The low one-level step surfaces of 312-;313- ends Portion;41- latch;42- protuberances;The plectrums of 43- second;431- dials handle.
Specific embodiment
Below with reference to accompanying drawing, a kind of anti-inserting structure of door lock of the present invention is described in detail.
Embodiment 1:
Referring to Fig. 1 to Fig. 5, a kind of anti-inserting structure of door lock, including:The latch bolt component 1 being installed in lock housing, the latch bolt group Part 1 includes latch bolt 11 and the latch bolt 11 is had to the first bias piece 12 for locking out direction movement tendency, the latch bolt 11 The reciprocating motion of retraction can be lock out, latch bolt 11 has an inclined-plane arranged towards door-plate, at closing time, in the extruding of door-plate Under effect, latch bolt 11 is returned in lock housing, and now latch bolt 11 is also subject to first bias piece 12 towards locking out the first of direction Partial pressure, when latch bolt 11 moves to the latch bolt groove location on door-plate, effect of the latch bolt 11 in first biasing force Under lock out.
Also include anti-tongue component 2, it is installed in the lock housing, and referring to Fig. 1, Fig. 8, it includes anti-tongue 22, and The anti-tongue is had to the second bias piece 21 for locking out direction movement tendency, anti-tongue 22 close the door with door opening process with Latch bolt 11 is synchronized with the movement.
Referring to Fig. 1, Fig. 6, also including anti-plug oscillating bar assembly 3, the latch bolt component 1 and the anti-tongue component 2 are installed on Between, refer in the height direction between the latch bolt component 1 and the anti-tongue component 2, the big position of anti-plug oscillating bar assembly 3 Between latch bolt component 1 and anti-tongue component 2, the anti-plug oscillating bar assembly 3 includes can be in the latch bolt 11 and the anti-tongue The anti-plug fork 31 being rotatably mounted in the lock housing is come and gone between 22, and is acted on the anti-plug fork 31, its is inclined Pressure makes the anti-plug fork 31 be rotated towards the direction of the latch bolt 11 and be propped up the latch bolt 11 by the anti-tongue direction to retract The 3rd bias piece 32 in the lock housing, when the anti-plug fork 31 turns to the rear end face rear of latch bolt 11, anti-plug fork 31 end props up latch bolt 11, latch bolt 11 is return, so as to play anti-plug effect, when the anti-plug fork 31 is from latch bolt When 11 rear end rotates towards the direction of anti-plug tongue 22 and disengages the rear end face of the latch bolt 11, latch bolt 11 does not possess anti-plug effect, Door lock can be opened.
The anti-tongue 22 is provided with the position limiting structure for preventing the anti-plug fork 31 from rotating to the direction of the latch bolt 11, and During the anti-tongue 22 is retracted toward in the lock housing, limit of the position limiting structure to the anti-plug fork 31 is released Position, that is to say the position limiting structure equivalent to the trigger mechanism that anti-plug fork 31 is rotated, and position limiting structure is due to being arranged on anti-tongue On 22, so as to make the anti-plug fork 31 from anti-tongue 22 to the direction of latch bolt 11 during at closing time with the motion of anti-tongue 22 Rotate, and make the front end of anti-plug fork 31 be rocked to the rear end of latch bolt 11 after latch bolt 11 lock out so that latch bolt 11 can not after Move back, play anti-plug effect.
Referring to Fig. 1, Fig. 7, also including plectrum component 4, with handle axle construction or lock core shaft's structural integrity linkage, rotating through The anti-plug fork 31 is promoted to be turned at the anti-tongue 22 by the latch bolt 11 is propped up in journey, second bias piece 21 Biasing force makes the anti-tongue 22 toward direction motion is lock out, and recovers to the spacing of the anti-plug fork 31, namely in releasing process In, need to rotate plectrum component 4 to drive anti-plug fork 31 to rotate the conflict released to latch bolt 11 to anti-tongue direction, and Anti- tongue 22 lock out the position-limiting action recovered to anti-plug fork 31 in the presence of the second bias piece 21, and plectrum component 4 can lead to Cross handle axle construction or lock core structure with its one linkage to drive it to rotate.
Referring to Fig. 6, on the side wall of one end end for propping up the latch bolt 11 of the anti-plug fork 31 one-level platform is formed with Terrace towards the latch bolt side step, and between the high one-level step surface and low one-level step surface of the step with incline Face transition, the high one-level step surface lock out direction and one in front and one in back arranges with the low one-level step surface edge, and the high one-level Front, the position limiting structure does along locking out during the back and forth movement of direction or retracted orientation step surface with the anti-tongue 22, Contact with the high one-level step surface, the low one-level step surface respectively.The position limiting structure by respectively with the high one-level Step surface and the low one-level step surface offset to limit the amplitude of fluctuation of the end of anti-plug fork 31, so as to play open anti-plug and Release the effect of anti-plug.
In the present embodiment, referring to Fig. 8, the position limiting structure 23 is formed in spacing recessed on the anti-tongue 22 for one Groove,;Referring to Fig. 1, Fig. 6, the bottom surface of the limited impression respectively with the high one-level step surface 311, the low one-level step surface 312 contacts, the bottom surface of the limited impression is directed to what is extended perpendicular to the direction of anti-plug fork 31, and can put with anti-plug Each face of the contact of bar 31.
It is to be appreciated that the set-up mode of position limiting structure 23 be not limited only to when anti-tongue is locked and lock out with the height One-level step surface 311 and the first order step surface 312 are contacted respectively or one or several faces for offseting, or passed through Point is contacted or linear contact lay, although do not shown in the accompanying drawings, but those skilled in the art can be understood by following description, described Position limiting structure 23 with link with the one of anti-tongue 22, and offset with the low one-level step surface 312 when anti-tongue 22 is locked, with The anti-plug fork 31 is set to rotate towards latch bolt 11, so as to play anti-plug effect;When anti-tongue 22 lock out with the high one-level Step surface offsets, to suppress the anti-plug fork 31 to rotate towards latch bolt 11, so as to play the structure for releasing anti-plug effect.
This design of position limiting structure 23, is contracted by the knee on anti-tongue compared in prior art with anti-tongue Rotate to limit the design that anti-plug fork swings height in fixed interval during returning, with simple structure, design Rationally, and reliable and stable advantage.
In the present embodiment, it is additionally provided with locking out and retraction side to the anti-tongue 22 between the anti-tongue 22 and lock housing To the guide frame (not shown) being oriented to, guide frame can be provided in the cunning in lock housing, slide rail or other shapes The guide frame of formula, so that the anti-tongue 22 can move back and forth locking out with retracted orientation.
The set-up mode of guide frame described further below:
In the present embodiment, the guide frame includes taking shape in guide rail or guide groove in the lock housing, the guide rail or Guide groove is arranged in the direction that lock out of the anti-tongue 22, and fluted or projection is formed on the anti-tongue 22 to be slidably arranged in State on guide rail or guide groove, therefore anti-tongue 22 can slide on the guide rail or guide groove, now, second bias piece 21 pairs The bias force direction of the anti-tongue 22 should be towards locking out direction or generally consistent with the bearing of trend of guide rail or guide groove.
Further, the anti-tongue 22 is respectively provided on two sides with a slide protrusion towards the base plate and cover plate of the lock housing 24, the slide protrusion 24 is arranged in the guide groove in the lock housing.
In the present embodiment, referring to Fig. 1 to Fig. 5, the part of anti-tongue 22 stretches to the rear end of the latch bolt 11, so that The latch bolt 11 promotes the anti-tongue 22 to move to direction is locked during locking, when latch bolt 11 is subject to door-plate extruding to lock During, because the part of anti-tongue 22 stretches to the rear end of the latch bolt 11, therefore latch bolt 11 is during retraction Anti- tongue 22 can be driven to be retracted into lock housing, so that anti-plug fork 31 towards latch bolt 11 when swinging, stopped by the bottom surface of latch bolt 11, Prevent anti-plug fork 31 is from being rocked to the rear end of latch bolt 11, so as to avoid anti-plug fork 31 at closing time from upspringing to latch bolt 11 End, causes situation about can not close the door to occur, and anti-tongue 22 is locked by way of latch bolt 11 is promoted, compared to prior art In the design locked by way of door-plate is extruded, the frictional force and vibrations that anti-tongue 22 is subject to greatly reduces, so as to Play a part of to avoid the anti-vibrations of tongue component 2 from damaging, improve the service life of door lock.
In the present embodiment, referring to Fig. 1 to Fig. 5, the plectrum component 4 includes that same handle axle or lock core are together rotated One plectrum, and the latch 41 being arranged on first plectrum, when unlocking, the latch 41 promotes the anti-plug to put The other end of bar 31 is rotated makes the anti-plug fork 31 rotate to the direction that the latch bolt is contradicted towards releasing.Wherein, plectrum component 4 Both can simultaneously link with handle axle or lock core, it is also possible to only link with lock core or handle axle one, and pass through other driving members Drive handle axle or lock core.
When opening the door using handle axle, handle axle is rotated first, driven in the plectrum component 4 linked with it by handle axle The first plectrum rotate, the latch 41 on the first plectrum promotes the rear end of anti-plug fork 31 so that anti-during rotation Slotting fork 31 is rotated towards the direction of anti-tongue 22, so that anti-plug fork 31 disengages the rear end face of latch bolt 11, now anti-plug is imitated Fruit releases, and door can be opened.
When opening the door using lock core, use key rotary locking cylinder first, lock core drives during rotation and linked with it First plectrum is rotated, and the latch 41 on the first plectrum promotes the rear end of anti-plug fork 31 so that anti-plug during rotation Fork 31 is rotated towards the direction of anti-tongue 22, so that anti-plug fork 31 disengages the rear end face of latch bolt 11, now anti-plug effect Release, door can be opened.
In the present embodiment, referring to Fig. 1, the anti-plug oscillating bar assembly 3 also includes the anti-plug steady pin being formed in lock housing, The anti-plug fork 31 is set on the anti-plug steady pin with the 3rd bias piece 32.
In the present embodiment, referring to Fig. 1, the 3rd bias piece 32 is fixed on the anti-plug fork 31 for a pin, The torsion spring that another pin is fixed in lock housing.
In the present embodiment, referring to Fig. 1-5, it is convex that the motion path of the plectrum component 4 correspondence push rod 5 is formed with one Go out portion 42, the push rod 5 promotes the protuberance 42 to drive the plectrum component 4 to unlocking direction in linear motion Rotation.
The course of work of the anti-inserting structure of a kind of door lock in the present embodiment:
Door closing procedure:By state is lock out at closing time, now latch bolt 11 lock out door lock, and anti-tongue 22 lock out, and anti-tongue Position limiting structure 23 on 22 is acted on the high one-level step surface 311 of the anti-plug fork 31, first after closing the door, on doorframe Guide plate is contacted with latch bolt 11, and because latch bolt 11 has the inclined-plane towards the guide plate side, therefore latch bolt 11 is in guide plate Squeezing action under in retraction lock housing, meanwhile, latch bolt 11 drives anti-tongue 22 to contract along the guide frame during retraction Return in lock housing, latch bolt 11 keeps contacting with anti-tongue 22 during the retraction lock housing of anti-tongue 22, therefore anti-plug fork 31 is not The rear end of latch bolt 11 can be upwards gone to, now, the position limiting structure 23 on anti-tongue 22 is acted on, when latch bolt 11 is moved on doorframe Latch bolt groove location when, latch bolt 11 lock out, and disengages with the front end face of anti-tongue 22, and now, the position limiting structure acts on institute State on the low one-level step surface 312 of anti-plug fork 31, after latch bolt lock out, anti-plug fork 31 can go to the rear end of latch bolt 11, So as to play anti-plug effect, now anti-tongue 11 can not drop back.
Door opening process:Can be opened the door by rotation handle and rotary locking cylinder two ways.
When opening the door using handle axle, handle axle is rotated first, driven in the plectrum component 4 linked with it by handle axle The first plectrum rotate, the latch 41 on the first plectrum promotes the rear end of anti-plug fork 31 so that anti-during rotation Slotting fork 31 is rotated towards the direction of anti-tongue 22, so that anti-plug fork 31 disengages the rear end face of latch bolt 11, now anti-plug is imitated Fruit releases, and door can be opened.
When opening the door using lock core, use key rotary locking cylinder first, lock core drives during rotation and linked with it First plectrum is rotated, and the latch 41 on the first plectrum promotes the rear end of anti-plug fork 31 so that anti-plug during rotation Fork 31 is rotated towards the direction of anti-tongue 22, so that anti-plug fork 31 disengages the rear end face of latch bolt 11, now anti-plug effect Release, door can be opened.
Embodiment 2
The present embodiment is with the difference of embodiment 1, referring to Fig. 9,10, the anti-plug fork 31 is in " S " type, the plectrum Component 4 also includes the second plectrum 43 in " 6 " font that same handle axle or lock core are together rotated, and skew bolt lock does well down, described The handle 431 of dialling of the second plectrum 43 offsets with the end 313 of the anti-plug fork 31, so that the second plectrum 43 described in when unlocking Rotate and drive the anti-plug fork 31 to rotate toward the conflict direction to the latch bolt is released.
Embodiment 3
The present embodiment is the deformation on the basis of embodiment 1 or embodiment 2, is with the difference of embodiment 1 or 2:
In the present embodiment, referring to Fig. 1-5, when also including being unlocked using key, key driven cylinder is rotated so as to drive The push rod 5 of its linear motion, the push rod 5 drives the plectrum component 4 to rotate to unlocking direction in linear motion, from And promoting the anti-plug fork 31 by propping up at the steering of the latch bolt 11 anti-tongue, the latch 41 on the first plectrum exists During rotation, the rear end of anti-plug fork 31 is promoted so that anti-plug fork 31 is rotated towards the direction of anti-tongue 22, so that Anti-plug fork 31 disengages the rear end face of latch bolt 11, and now anti-plug effect is released, and door can be opened.
Obviously, above-described embodiment is only intended to clearly illustrate example, not to the restriction of embodiment.For For those of ordinary skill in the art, the change or change of other multi-forms can also be made on the basis of the above description It is dynamic.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or change Among moving still in the protection domain of the invention.

Claims (12)

1. the anti-inserting structure of a kind of door lock, including:
Latch bolt component (1), is installed in lock housing, including latch bolt (11) and makes the latch bolt (11) with moving to locking out direction First bias piece (12) of trend, the latch bolt (11) can lock out the reciprocating motion of retraction, first bias piece (12) For stage clip;
Anti- tongue component (2), is installed in the lock housing, including anti-tongue (22), and make the anti-tongue (22) with to It lock out second bias piece (21) of direction movement tendency;
Anti-plug oscillating bar assembly (3), is installed between the latch bolt component (1) and the anti-tongue component (2), including can be described The anti-plug fork (31) being rotatably mounted in the lock housing, and effect are come and gone between latch bolt (11) and the anti-tongue (22) On the anti-plug fork (31), its biasing force makes the anti-plug fork (31) by the anti-tongue direction towards the latch bolt (11) Direction rotates and props up the 3rd bias piece (32) that the latch bolt (11) is retracted in the lock housing;
The anti-tongue (22) is provided with the position limiting structure for preventing the anti-plug fork (31) from rotating to the latch bolt (11) direction (23), and during the anti-tongue (22) is retracted toward in the lock housing, release the position limiting structure and the anti-plug is put Bar (31) it is spacing;
Plectrum component (4), with handle axle construction or lock core shaft's structural integrity linkage, promotes the anti-plug fork in rotary course (31) anti-tongue (22) place is turned to by propping up the latch bolt (11), the biasing force of second bias piece (21) makes described Anti- tongue (22) is recovered to the spacing of the anti-plug fork (31) toward direction motion is lock out;
It is characterized in that:
One-level step surface is formed with the side wall of one end end for propping up the latch bolt of the anti-plug fork (31) towards described With inclination between the step of latch bolt side, and the high one-level step surface (311) of the step and low one-level step surface (312) Face transition, the high one-level step surface (311) lock out direction and one in front and one in back arranges with low one-level step surface (312) edge, and Front, the position limiting structure does along the back and forth movement for locking out direction or retracted orientation the high one-level step surface with the anti-tongue During, contact with the high one-level step surface (311), the low one-level step surface (312) respectively.
2. the anti-inserting structure of a kind of door lock according to claim 1, it is characterised in that the position limiting structure (23) is to be formed Limited impression on the anti-tongue (22), the bottom surface of the limited impression respectively with the high one-level step surface (311), institute State low one-level step surface (312) contact.
3. the anti-inserting structure of a kind of door lock according to claim 1 and 2, it is characterised in that the anti-tongue (22) with it is described It is additionally provided between lock housing and the guide frame being oriented to retracted orientation is lock out to the anti-tongue (22).
4. the anti-inserting structure of a kind of door lock according to claim 3, it is characterised in that the guide frame includes taking shape in institute The guide rail or guide groove in lock housing is stated, the guide rail or guide groove are arranged in the direction that lock out of the anti-tongue (22), the anti-tongue (22) form fluted or projection on to be slidably arranged on the guide rail or guide groove.
5. the anti-inserting structure of a kind of door lock according to claim 4, it is characterised in that the anti-tongue (22) is towards the lock The base plate of shell and cover plate are respectively provided on two sides with a slide protrusion (24), and the slide protrusion (24) is arranged in the lock housing Guide groove in.
6. the anti-inserting structure of a kind of door lock according to claim 5, it is characterised in that anti-tongue (22) part is stretched to The rear end of the latch bolt (11), so that the latch bolt (11) promotes the anti-tongue (22) to transport to direction is locked during locking It is dynamic.
7. the anti-inserting structure of a kind of door lock according to claim 1, it is characterised in that the plectrum component (4) is included with holding The first plectrum that hand axle or lock core are together rotated, and the latch (41) being arranged on first plectrum, in when institute of unlocking Stating latch (41) promotes the other end rotation of the anti-plug fork (31) to make the anti-plug fork (31) towards releasing to described oblique The direction that tongue is contradicted rotates.
8. the anti-inserting structure of a kind of door lock according to claim 1, it is characterised in that the anti-plug fork (31) in " S " type, The plectrum component (4) also includes the second plectrum (43) in " 6 " font that same handle axle or lock core are together rotated, and latch bolt lock out Under state, the handle (431) of dialling of second plectrum (43) offsets with the end (313) of the anti-plug fork (31), so that Second plectrum (43) described in during unlocking is rotated and drives the anti-plug fork (31) to rotate toward the conflict direction to the latch bolt is released.
9. the anti-inserting structure of a kind of door lock according to claim 1, it is characterised in that the anti-plug oscillating bar assembly (3) is also wrapped The anti-plug steady pin being formed in lock housing is included, the anti-plug fork (31) is set in the anti-plug with the 3rd bias piece (32) On steady pin.
10. the anti-inserting structure of a kind of door lock according to claim 9, it is characterised in that the 3rd bias piece (32) is Pin is fixed on the anti-plug fork (31), the torsion spring that another pin is fixed in lock housing.
The anti-inserting structure of 11. a kind of door locks according to claim 1, it is characterised in that when also including being unlocked using key, key Spoon drives lock core to rotate the push rod (5) so as to drive it to move along a straight line, and the push rod (5) drives described in linear motion Plectrum component (4) to unlocking direction rotates, so as to promote the anti-plug fork (31) to turn to institute by the latch bolt (11) is propped up State at anti-tongue.
A kind of anti-inserting structure of 12. door locks according to claim 11, it is characterised in that plectrum component (4) the correspondence institute The motion path for stating push rod (5) is formed with a protuberance (42), and the push rod (5) promotes the protrusion in linear motion Portion (42) is rotated with driving the plectrum component (4) to unlocking direction.
CN201410439304.8A 2014-08-29 2014-08-29 Door lock inserting prevention structure Active CN104234536B (en)

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CN108952328B (en) * 2018-07-28 2020-04-10 林倩妮 Anti-inserting safety door lock

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB2408290A (en) * 2003-11-20 2005-05-25 Cenlox Technologies Ltd Motor driven lock with optional mechanical override
CN201763077U (en) * 2009-08-18 2011-03-16 卢流标 Humanized counter locking intelligent lock
CN202483283U (en) * 2012-02-17 2012-10-10 嘉兴美可泰科技有限公司 Automatically-locking antitheft door lock
CN203321132U (en) * 2013-04-07 2013-12-04 黄雨 Automatic locking core inserting double quick lock
CN204163503U (en) * 2014-08-29 2015-02-18 四川王力安防产品有限公司 The anti-inserting structure of a kind of door lock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408290A (en) * 2003-11-20 2005-05-25 Cenlox Technologies Ltd Motor driven lock with optional mechanical override
CN201763077U (en) * 2009-08-18 2011-03-16 卢流标 Humanized counter locking intelligent lock
CN202483283U (en) * 2012-02-17 2012-10-10 嘉兴美可泰科技有限公司 Automatically-locking antitheft door lock
CN203321132U (en) * 2013-04-07 2013-12-04 黄雨 Automatic locking core inserting double quick lock
CN204163503U (en) * 2014-08-29 2015-02-18 四川王力安防产品有限公司 The anti-inserting structure of a kind of door lock

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