CN104234536A - Door lock inserting prevention structure - Google Patents

Door lock inserting prevention structure Download PDF

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Publication number
CN104234536A
CN104234536A CN201410439304.8A CN201410439304A CN104234536A CN 104234536 A CN104234536 A CN 104234536A CN 201410439304 A CN201410439304 A CN 201410439304A CN 104234536 A CN104234536 A CN 104234536A
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CN
China
Prior art keywords
tongue
latch bolt
plug
step surface
lock
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Granted
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CN201410439304.8A
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Chinese (zh)
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CN104234536B (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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Publication of CN104234536B publication Critical patent/CN104234536B/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

The anti-inserting structure of a kind of door lock
Technical field
The present invention relates to the anti-inserting structure of a kind of door lock, belong to mechanical lock field.
Background technology
Usually the door lock used, in order to can be automatic locking when closing the door, dead bolt generally can adopt towards the latch bolt in direction of closing the door, in interior pushing, the bevel direction of door lock skew bolt is all towards exterior, like this under the state of locking a door, by with hard paper, the thinner article such as card insert crack between a door and its frame, promote latch bolt and just can open door lock, therefore this door lock theftproof performance poor, there is potential safety hazard.
For this problem, Chinese patent literature CN202483259U discloses a kind of anti-plug of lock core and the anti-plug device of solution, comprises latch bolt assembly, slurcam, spring, anti-plate, anti-plug drive plate, anti-tongue (6), swinging plate, lock body shell; Latch bolt assembly, spring, anti-plate, anti-tongue, swinging plate is all assemblied on lock body shell; Sliding panel is assemblied on latch bolt assembly; Spring and anti-plate concentric fits; Anti-plug drive plate (5) is assemblied on anti-tongue; Lock body shell has the fixed block A, fixed block B, the fixed block C that play the role of positioning, spring has terminal A, terminal B, terminal A and fixed block A offset; Anti-plate and spring are mounted concentrically on fixed block B, and rotate centered by fixed block B; Anti-plate has protruding A, and the plane of protruding A, higher than spring, offsets with another terminal B of spring; Protruding A and anti-plug drive plate offset.
Following defect is there is in the anti-plug of a kind of lock core of this patent document with the anti-plug device of solution:
1, in this patent document, anti-tongue is by the prerotation vane pressure on doorframe, so just make to produce between anti-tongue and prerotation vane to rub, one easily makes anti-tongue damage, thus cause reduce application life, the direction of two power come suffered by anti-tongue is directions that are vertical and prerotation vane phase-contact surface, therefore the component of vertical direction can be produced, the of a specified duration angle inaccuracy then easily making the drive plate rotation be arranged on anti-tongue, thus cause the rotational angle of drive plate excessive, when not needing anti-plug, drive plate props up latch bolt, make to close the door, even destroy anti-inserting structure and latch bolt structure, or the rotational angle of drive plate is too small, do not have anti-plug effect, therefore the door lock anti-plug effect of this structure is unreliable.
2, in this patent document, using handle axle to remove anti-plug is by after rotation handle, the sliding panel of top is stirred with the swinging plate of handle axle unitary rotation, sliding panel promotes drive plate again at moving process and rotates counterclockwise and remove anti-plug, the structure of such releasing anti-plug is too complicated, very high to the requirement of the precision of installation, accessory size, therefore in use, the Anti-inserting lock releasing anti-plug action of this structure is unreliable.
Summary of the invention
To be solved by this inventionly be that existing door lock anti-inserting structure anti-plug effect is unreliable, complex structure, to the installation of part and the high technical problem of the required precision of size, thus provide a kind of rational in infrastructure, to the safety of part and the required precision of size is not high and anti-plug is reliable for effect, the anti-inserting structure of a kind of door lock of long service life.
To achieve these goals, the invention provides the anti-inserting structure of a kind of door lock, comprising:
Latch bolt assembly, is installed in lock housing, and comprise latch bolt and make described latch bolt have the first bias piece to locking out direction movement tendency, described latch bolt can lock out the reciprocating motion of retraction;
Anti-tongue assembly, is installed in described lock housing, comprises anti-tongue, and makes described anti-tongue have the second bias piece to locking out direction movement tendency;
Anti-plug oscillating bar assembly, be installed between described latch bolt assembly and described anti-tongue assembly, comprise and can come and go the anti-plug fork be arranged on rotationally in described lock housing between described latch bolt and described anti-tongue, and acting on described anti-plug fork, its biasing force makes described anti-plug fork be rotated towards described latch bolt direction by described anti-tongue direction and props up the 3rd bias piece that described latch bolt retracts in described lock housing;
Described anti-tongue is provided with and stops the position limiting structure that rotates to described latch bolt direction of described anti-plug fork, and in the process that described anti-tongue is retracted in described lock housing, removes spacing to described anti-plug fork of described position limiting structure;
Plectrum assembly, link with handle axle construction or lock core shaft's structural integrity, in rotary course, promoting described anti-plug fork turning to described anti-tongue place by propping up described latch bolt, the biasing force of described second bias piece makes described anti-tongue toward locking out direction motion, and that recovers described anti-plug fork is spacing;
The sidewall propping up the end, one end of described latch bolt of described anti-plug fork is formed with the step of one-level step surface towards described latch bolt side, and with inclined plane transition between the high one-level step surface of this step and low one-level step surface, described high one-level step surface and described low one-level step surface are one in front and one in back arranged along locking out direction, and described high one-level step surface is front, described position limiting structure does along locking out in the back and forth movement process of direction or retracted orientation with described anti-tongue, contacts respectively with described high one-level step surface, described low one-level step surface.
Described position limiting structure is a limited impression being formed on described anti-tongue, and the bottom surface of described limited impression contacts with described high one-level step surface, described low one-level step surface respectively.
Locking out and guide frame that retracted orientation leads described anti-tongue is also provided with between described anti-tongue and lock housing.
Described guide frame comprises and takes shape in guide rail in described lock housing or guide groove, and described guide rail or guide groove are arranged in the direction that lock out of described anti-tongue 22, described anti-tongue 22 is formed with groove or projection to be slidably arranged on described guide rail or guide groove.
Described anti-tongue 22 is respectively equipped with a slide protrusion 24 towards the base plate of described lock housing and the both sides of cover plate, and described slide protrusion 24 is arranged in the guide groove in described lock housing.
Described anti-tongue 22 part stretches to the rear end of described latch bolt 11, with make described latch bolt 11 lock in process promote described anti-tongue 22 to lock direction motion.
Described plectrum assembly comprises the first plectrum that same handle axle or lock core together rotate, and the latch be arranged on described first plectrum, the direction rotation that the other end rotation that described latch promotes described anti-plug fork when unblanking makes described anti-plug fork conflict towards releasing to described latch bolt.
Described anti-plug fork is in " S " type, described plectrum assembly also comprises the second plectrum in " 6 " font that same handle axle or lock core together rotate, skew bolt lock does well down, the end of dialling handle and described anti-plug fork of described second plectrum offsets, and rotates drive described anti-plug fork to rotate the conflict direction of described latch bolt toward releasing with the second plectrum described in making when unblanking.
Described anti-plug oscillating bar assembly also comprises the anti-plug steady pin be formed in lock housing, and described anti-plug fork and described 3rd bias piece are set on described anti-plug steady pin.
Described first deflection piece is that a pin is fixed on described anti-plug fork, and another pin is fixed on the torsion spring in lock housing.
When also comprising the unblock of use key, key driven cylinder is rotated thus is driven the push rod of its rectilinear motion, described push rod drives described plectrum assembly to rotate to unlocking direction in linear motion, thus promotes described anti-plug fork and turn to described anti-tongue place by propping up described latch bolt.
The motion path of the corresponding described latch bolt push rod of described plectrum assembly is formed with a protuberance, and described latch bolt push rod promotes described protuberance and rotates to unlocking direction to drive described plectrum assembly in linear motion.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) the anti-inserting structure of door lock of the present invention, described position limiting structure does along locking out in the back and forth movement process of direction or retracted orientation with described anti-tongue, respectively with described high one-level step surface, described low one-level step surface contact, that is to say, described high one-level step surface and described low one-level step surface is acted on respectively by position limiting structure, two different height are laid respectively to make the end of described anti-plug fork, when described position limiting structure acts on described low one-level step surface, the rear end that the front end of described anti-plug fork props up described latch bolt makes described latch bolt not retreat, thus play anti-plug effect, position limiting structure acts on the design of high one-level step surface on anti-plug fork and low one-level step surface by displacement, the design that anti-plug fork swings height is limited compared to rotating in fixed interval in the process of being retracted with anti-tongue by the knee on anti-tongue in prior art, there is structure simple, reasonable in design, and reliable and stable advantage.
(2) the anti-inserting structure of door lock of the present invention, locking out and guide frame that retracted orientation leads described anti-tongue is also provided with between described anti-tongue and lock housing, and described anti-tongue and described latch bolt part have collective height, with make described latch bolt lock in process promote described anti-tongue to lock direction motion, extrude in the process locked when latch bolt is subject to door-plate, anti-tongue is driven to be retracted into lock housing, anti-plug fork is contacted with latch bolt rear end face, now anti-plug fork can not be rocked to the rear end of latch bolt, thus avoid anti-plug fork at closing time to upspring to latch bolt rear end, situation about can not close the door is caused to occur, and the mode that anti-tongue is promoted by latch bolt is locked, compared to the design that the mode extruded by door-plate of the prior art is locked, the frictional force that anti-tongue is subject to and vibrations greatly reduce, thus play the effect avoiding anti-tongue assembly to shake damage, improve the application life of door lock.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 be in embodiment 1 the anti-inserting structure of a kind of door lock close the door before structural representation;
Fig. 2 is the structural representation of a kind of door lock anti-inserting structure when latch bolt is locked after being pressed down at closing time in embodiment 1, also show anti-plug fork simultaneously and rotates towards latch bolt direction;
Fig. 3 is the structural representation of the anti-inserting structure of a kind of door lock in the latch bolt groove that after closing the door in embodiment 1, latch bolt is ejected on door-plate, also show the rear end face going to latch bolt of anti-plug fork simultaneously;
Fig. 4 is the structural representation of a kind of door lock anti-inserting structure when making to turn the key in the lock in embodiment 1;
Fig. 5 is the structural representation of a kind of door lock anti-inserting structure when using handle to open the door 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 assembly in embodiment 1 and embodiment 2;
Fig. 8 is the structural representation of latch bolt in embodiment 1 and embodiment 2;
Fig. 9 is the structural representation of the anti-inserting structure of a kind of door lock in the latch bolt groove that after closing the door in embodiment 2, latch bolt is ejected on door-plate, also show the rear end face going to latch bolt of anti-plug fork simultaneously;
Figure 10 is the structural representation of a kind of door lock anti-inserting structure when using handle to open the door in embodiment 2.
Description of reference numerals: 1-latch bolt assembly; The anti-tongue assembly of 2-; 3-anti-plug oscillating bar assembly; 4-plectrum assembly; 5-push rod; 11-latch bolt; 12-first bias piece; 21-second bias piece; The anti-tongue of 22-; 23-position limiting structure; 24-slide protrusion; 31-anti-plug fork; 32-the 3rd bias piece; 33-anti-plug steady pin; 311-high one-level step surface; The low one-level step surface of 312-; 313-end; 41-latch; 42-protuberance; 43-second plectrum; 431-dials handle.
Detailed description of the invention
Below with reference to accompanying drawing, the anti-inserting structure of a kind of door lock of the present invention is described in detail.
Embodiment 1:
See Fig. 1 to Fig. 5, the anti-inserting structure of a kind of door lock, comprise: be installed on the latch bolt assembly 1 in lock housing, described latch bolt assembly 1 comprises latch bolt 11 and makes described latch bolt 11 have the first bias piece 12 to locking out direction movement tendency, described latch bolt 11 can lock out the reciprocating motion of retraction, latch bolt 11 has an inclined-plane arranged towards door-plate, at closing time, under the squeezing action of door-plate, latch bolt 11 returns in lock housing, now latch bolt 11 is also subject to described first bias piece 12 towards the first partial pressure locking out direction, when moving to the latch bolt groove location on door-plate when latch bolt 11, latch bolt 11 lock out under the effect of described first biasing force.
Also comprise anti-tongue assembly 2, it is installed in described lock housing, and see Fig. 1, Fig. 8, it comprises anti-tongue 22, and make described anti-tongue have the second bias piece 21 to locking out direction movement tendency, anti-tongue 22 close the door and in door opening process with being synchronized with the movement of latch bolt 11.
See Fig. 1, Fig. 6, also comprise anti-plug oscillating bar assembly 3, be installed between described latch bolt assembly 1 and described anti-tongue assembly 2, refer in the height direction between described latch bolt assembly 1 and described anti-tongue assembly 2, anti-plug oscillating bar assembly 3 is substantially between latch bolt assembly 1 and anti-tongue assembly 2, described anti-plug oscillating bar assembly 3 comprises and can come and go the anti-plug fork 31 be arranged on rotationally in described lock housing between described latch bolt 11 and described anti-tongue 22, and act on described anti-plug fork 31, its biasing force makes described anti-plug fork 31 be rotated towards described latch bolt 11 direction by described anti-tongue direction and props up the 3rd bias piece 32 that described latch bolt 11 retracts in described lock housing, when described anti-plug fork 31 turns to the rear end face rear of latch bolt 11, the end of anti-plug fork 31 props up latch bolt 11, latch bolt 11 can not be return, thus play anti-plug effect, when described anti-plug fork 31 rotates from the rear end face of latch bolt 11 to anti-tongue 22 direction and throws off the rear end face of described latch bolt 11, latch bolt 11 does not possess anti-plug effect, door lock can be opened.
Described anti-tongue 22 is provided with the position limiting structure stoping described anti-plug fork 31 to rotate to described latch bolt 11 direction, and in the process that described anti-tongue 22 is retracted in described lock housing, remove spacing to described anti-plug fork 31 of described position limiting structure, that is to say that described position limiting structure is equivalent to the trigger mechanism of anti-plug fork 31 rotation, position limiting structure is owing to being arranged on anti-tongue 22, thus in the process of moving with anti-tongue 22 at closing time, described anti-plug fork 31 is rotated to latch bolt 11 direction by anti-tongue 22, and after latch bolt 11 lock out, make the front end of anti-plug fork 31 be rocked to the rear end of latch bolt 11, thus latch bolt 11 can not be retreated, play anti-plug effect.
See Fig. 1, Fig. 7, also comprise plectrum assembly 4, link with handle axle construction or lock core shaft's structural integrity, in rotary course, promoting described anti-plug fork 31 turning to described anti-tongue 22 place by propping up described latch bolt 11, the biasing force of described second bias piece 21 makes described anti-tongue 22 toward locking out direction motion, recover spacing to described anti-plug fork 31, also namely in releasing process, need to make plectrum assembly 4 rotate to drive anti-plug fork 31 to rotate the conflict removed latch bolt 11 to anti-tongue direction, and anti-tongue 22 lock out the position-limiting action recovered anti-plug fork 31 under the effect of the second bias piece 21, plectrum assembly 4 can by driving it to rotate with its handle axle construction integrally linked or lock core structure.
See Fig. 6, the sidewall propping up the end, one end of described latch bolt 11 of described anti-plug fork 31 is formed with the step of one-level step surface towards described latch bolt side, and with inclined plane transition between the high one-level step surface of this step and low one-level step surface, described high one-level step surface and described low one-level step surface are one in front and one in back arranged along locking out direction, and described high one-level step surface is front, described position limiting structure does along locking out in the back and forth movement process of direction or retracted orientation with described anti-tongue 22, contacts respectively with described high one-level step surface, described low one-level step surface.Described position limiting structure limits the amplitude of fluctuation of anti-plug fork 31 end by offseting with described high one-level step surface and described low one-level step surface respectively, thus plays the effect of opening anti-plug and removing anti-plug.
In the present embodiment, see Fig. 8, described position limiting structure 23 is a limited impression being formed on described anti-tongue 22; See Fig. 1, Fig. 6, the bottom surface of described limited impression contacts with described high one-level step surface 311, described low one-level step surface 312 respectively, the bottom surface of described limited impression points to extend perpendicular to described anti-plug fork 31 direction, and each face that can contact with anti-plug fork 31.
It will be appreciated that, the set-up mode of position limiting structure 23 is not limited only to lock and one or several faces contacting with described high one-level step surface 311 respectively with described first order step surface 312 or offset when locking out at anti-tongue, also can be by point cantact or linear contact lay, although do not show in the accompanying drawings, but those skilled in the art can be understood by following description, described position limiting structure 23 links with anti-tongue 22 one, and when anti-tongue 22 is locked and described low one-level step surface 312 offset, rotate towards latch bolt 11 to make described anti-plug fork 31, thus play anti-plug effect, when anti-tongue 22 lock out and described high one-level step surface offset, to suppress described anti-plug fork 31 to rotate towards latch bolt 11, thus play the structure removing anti-plug effect.
This design of position limiting structure 23, the design that anti-plug fork swings height is limited compared to rotating in fixed interval in the process of being retracted with anti-tongue by the knee on anti-tongue in prior art, there is structure simple, reasonable in design, and reliable and stable advantage.
In the present embodiment, locking out and guide frame (not shown) that retracted orientation leads described anti-tongue 22 is also provided with between described anti-tongue 22 and lock housing, guide frame can be the cunning be arranged in lock housing, slide rail or other forms of guide frame, can move back and forth locking out to make described anti-tongue 22 with retracted orientation.
Below describe the set-up mode of guide frame in detail:
In the present embodiment, described guide frame comprises and takes shape in guide rail in described lock housing or guide groove, described guide rail or guide groove are arranged in the direction that lock out of described anti-tongue 22, described anti-tongue 22 is formed with groove or projection to be slidably arranged on described guide rail or guide groove, therefore anti-tongue 22 can slide on described guide rail or guide groove, now, described second bias piece 21 should towards locking out direction to the biasing force direction of described anti-tongue 22, or consistent with the bearing of trend of guide rail or guide groove substantially.
Further, described anti-tongue 22 is respectively equipped with a slide protrusion 24 towards the base plate of described lock housing and the both sides of cover plate, and described slide protrusion 24 is arranged in the guide groove in described lock housing.
In the present embodiment, see Fig. 1 to Fig. 5, described anti-tongue 22 part stretches to the rear end of described latch bolt 11, with make described latch bolt 11 lock in process promote described anti-tongue 22 to lock direction motion, extrude in the process locked when latch bolt 11 is subject to door-plate, because described anti-tongue 22 part stretches to the rear end of described latch bolt 11, therefore latch bolt 11 can drive anti-tongue 22 to be retracted into lock housing in the process of retracting, thus make anti-plug fork 31 when swinging towards latch bolt 11, stopped by the bottom surface of latch bolt 11, make anti-plug fork 31 can not be rocked to the rear end of latch bolt 11, thus avoid anti-plug fork 31 at closing time to upspring to latch bolt 11 rear end, situation about can not close the door is caused to occur, and the mode that anti-tongue 22 is promoted by latch bolt 11 is locked, compared to the design that the mode extruded by door-plate of the prior art is locked, the frictional force that anti-tongue 22 is subject to and vibrations greatly reduce, thus play the effect avoiding anti-tongue assembly 2 to shake damage, improve the application life of door lock.
In the present embodiment, see Fig. 1 to Fig. 5, described plectrum assembly 4 comprises the first plectrum that same handle axle or lock core together rotate, and the latch 41 be arranged on described first plectrum, the direction rotation that the other end rotation that described latch 41 promotes described anti-plug fork 31 when unblanking makes described anti-plug fork 31 conflict towards releasing to described latch bolt.Wherein, plectrum assembly 4 both can link with handle axle or lock core simultaneously, also can only link with lock core or handle axle one, and drove handle axle or lock core by other driving members.
When using handle axle to open the door, first handle axle is rotated, driven by handle axle and rotate with the first plectrum in the plectrum assembly 4 of its interlock, latch 41 on first plectrum is in the process of rotating, the rear end promoting anti-plug fork 31 is rotated towards the direction of anti-tongue 22 to make anti-plug fork 31, thus make anti-plug fork 31 throw off the rear end face of latch bolt 11, now anti-plug effect is removed, and door can be opened.
When using lock core to open the door, first key rotary locking cylinder is used, lock core drives and rotates with the first plectrum of its interlock in the process of rotating, latch 41 on first plectrum is in the process of rotating, the rear end promoting anti-plug fork 31 is rotated towards the direction of anti-tongue 22 to make anti-plug fork 31, thus make anti-plug fork 31 throw off the rear end face of latch bolt 11, now anti-plug effect is removed, and door can be opened.
In the present embodiment, see Fig. 1, described anti-plug oscillating bar assembly 3 also comprises the anti-plug steady pin 33 be formed in lock housing, and described anti-plug fork 31 is set on described anti-plug steady pin 33 with described 3rd bias piece 32.
In the present embodiment, see Fig. 1, described first deflection piece 32 is that a pin is fixed on described anti-plug fork 31, and another pin is fixed on the torsion spring in lock housing.
In the present embodiment, see Fig. 1-5, the motion path of the corresponding described latch bolt push rod 5 of described plectrum assembly 4 is formed with a protuberance 42, and described latch bolt push rod 5 promotes described protuberance 42 and rotates to unlocking direction to drive described plectrum assembly 4 in linear motion.
The course of work of the anti-inserting structure of a kind of door lock in the present embodiment:
Door closing procedure: door lock is by locking out state at closing time, now latch bolt 11 lock out, anti-tongue 22 lock out, and the position limiting structure 23 on anti-tongue 22 acts on the high one-level step surface 311 of described anti-plug fork 31, first in pass behind the door, guide strip on doorframe contacts with latch bolt 11, because latch bolt 11 has towards the inclined-plane of described guide strip side, therefore latch bolt 11 is retracted in lock housing under the squeezing action of guide strip, simultaneously, latch bolt 11 drives anti-tongue 22 along in described guide frame retraction lock housing in the process of retracting, anti-tongue 22 retract lock housing process in latch bolt 11 keep in touch with anti-tongue 22, therefore anti-plug fork 31 upwards can not go to the rear end of latch bolt 11, now, position limiting structure 23 on anti-tongue 22 acts on, when the latch bolt slot that latch bolt 11 moves on doorframe is put, latch bolt 11 lock out, and throw off with the front end face of anti-tongue 22, now, described position limiting structure acts on the low one-level step surface 312 of described anti-plug fork 31, after latch bolt lock out, anti-plug fork 31 can go to the rear end of latch bolt 11, thus play anti-plug effect, now anti-tongue 11 can not be dropped back.
Door opening process: can be opened the door by rotation handle and rotary locking cylinder two kinds of modes.
When using handle axle to open the door, first handle axle is rotated, driven by handle axle and rotate with the first plectrum in the plectrum assembly 4 of its interlock, latch 41 on first plectrum is in the process of rotating, the rear end promoting anti-plug fork 31 is rotated towards the direction of anti-tongue 22 to make anti-plug fork 31, thus make anti-plug fork 31 throw off the rear end face of latch bolt 11, now anti-plug effect is removed, and door can be opened.
When using lock core to open the door, first key rotary locking cylinder is used, lock core drives and rotates with the first plectrum of its interlock in the process of rotating, latch 41 on first plectrum is in the process of rotating, the rear end promoting anti-plug fork 31 is rotated towards the direction of anti-tongue 22 to make anti-plug fork 31, thus make anti-plug fork 31 throw off the rear end face of latch bolt 11, now anti-plug effect is removed, and door can be opened.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, see Fig. 9,10, described anti-plug fork 31 is in " S " type, described plectrum assembly 4 also comprises the second plectrum 43 in " 6 " font that same handle axle or lock core together rotate, skew bolt lock does well down, the handle 431 dialled of described second plectrum 43 offsets with the end 313 of described anti-plug fork 31, rotates drive described anti-plug fork 31 to rotate the conflict direction of described latch bolt toward removing with the second plectrum 43 described in making when unblanking.
Embodiment 3
The present embodiment is the distortion in embodiment 1 or embodiment 2 basis, is with the difference of embodiment 1 or 2:
In the present embodiment, see Fig. 1-5, when also comprising the unblock of use key, key driven cylinder is rotated thus is driven the push rod 5 of its rectilinear motion, described push rod 5 drives described plectrum assembly 4 to rotate to unlocking direction in linear motion, thus promote described anti-plug fork 31 and turn to described anti-tongue place by propping up described latch bolt 11, latch 41 on first plectrum is in the process of rotating, the rear end promoting anti-plug fork 31 is rotated towards the direction of anti-tongue 22 to make anti-plug fork 31, thus make anti-plug fork 31 throw off the rear end face of latch bolt 11, now anti-plug effect is removed, door can be opened.
Obviously, above-described embodiment is only for clearly example being described, the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.

Claims (12)

1. the anti-inserting structure of door lock, comprising:
Latch bolt assembly (1), be installed in lock housing, comprise latch bolt (11) and make described latch bolt (11) have the first bias piece (12) to locking out direction movement tendency, described latch bolt (11) can lock out the reciprocating motion of retraction;
Anti-tongue assembly (2), is installed in described lock housing, comprises anti-tongue (22), and makes described anti-tongue (22) have the second bias piece (21) to locking out direction movement tendency;
Anti-plug oscillating bar assembly (3), be installed between described latch bolt assembly (1) and described anti-tongue assembly (2), comprise and can come and go the anti-plug fork (31) be arranged on rotationally in described lock housing between described latch bolt (11) and described anti-tongue (22), and acting on described anti-plug fork (31), its biasing force makes described anti-plug fork (31) be rotated towards described latch bolt (11) direction by described anti-tongue direction and props up the 3rd bias piece (32) that described latch bolt (11) retracts in described lock housing;
Described anti-tongue (22) is provided with the position limiting structure (23) stoping described anti-plug fork (31) to be rotated to described latch bolt (11) direction, and in the process that described anti-tongue (22) is retracted in described lock housing, remove spacing to described anti-plug fork (31) of described position limiting structure;
Plectrum assembly (4), link with handle axle construction or lock core shaft's structural integrity, in rotary course, promoting described anti-plug fork (31) turning to described anti-tongue (22) place by propping up described latch bolt (11), the biasing force of described second bias piece (21) makes described anti-tongue (22) toward locking out direction motion, and that recovers described anti-plug fork (31) is spacing;
It is characterized in that:
The sidewall propping up the end, one end of described latch bolt of described anti-plug fork (31) is formed with the step of one-level step surface towards described latch bolt side, and with inclined plane transition between the high one-level step surface (311) of this step and low one-level step surface (312), described high one-level step surface (311) is one in front and one in back arranged along locking out direction with described low one-level step surface (312), and described high one-level step surface is front, described position limiting structure does along locking out in the back and forth movement process of direction or retracted orientation with described anti-tongue, respectively with described high one-level step surface (311), described low one-level step surface (312) contact.
2. the anti-inserting structure of a kind of door lock according to claim 1, it is characterized in that, described position limiting structure (23) is a limited impression being formed on described anti-tongue (22), and the bottom surface of described limited impression contacts with described high one-level step surface (311), described low one-level step surface (312) respectively.
3. the anti-inserting structure of a kind of door lock according to claim 1 and 2, is characterized in that, is also provided with to lock out to described anti-tongue (22) guide frame led with retracted orientation between described anti-tongue (22) and described lock housing.
4. the anti-inserting structure of a kind of door lock according to claim 3, it is characterized in that, described guide frame comprises and takes shape in guide rail in described lock housing or guide groove, described guide rail or guide groove are arranged in the direction that lock out of described anti-tongue (22), described anti-tongue (22) are formed with groove or projection to be slidably arranged on described guide rail or guide groove.
5. the anti-inserting structure of a kind of door lock according to claim 4, it is characterized in that, described anti-tongue (22) is respectively equipped with a slide protrusion (24) towards the base plate of described lock housing and the both sides of cover plate, and described slide protrusion (24) is arranged in the guide groove in described lock housing.
6. the anti-inserting structure of a kind of door lock according to any one of claim 3-5, it is characterized in that, described anti-tongue (22) part stretches to the rear end of described latch bolt (11), with make described latch bolt (11) lock in process promote described anti-tongue (22) to lock direction motion.
7. the anti-inserting structure of a kind of door lock according to any one of claim 1 to 6, it is characterized in that, described plectrum assembly (4) comprises the first plectrum that same handle axle or lock core together rotate, and the latch (41) be arranged on described first plectrum, the direction rotation that the other end rotation that described latch (41) promotes described anti-plug fork (31) when unblanking makes described anti-plug fork (31) conflict towards releasing to described latch bolt.
8. the anti-inserting structure of a kind of door lock according to any one of claim 1 to 6, it is characterized in that, described anti-plug fork (31) is in " S " type, described plectrum assembly (4) also comprises the second plectrum (43) in " 6 " font that same handle axle or lock core together rotate, skew bolt lock does well down, the handle (431) of dialling of described second plectrum (43) offsets with the end (313) of described anti-plug fork (31), rotating with the second plectrum (43) described in making when unblanking drives described anti-plug fork (31) to rotate toward removing the conflict direction of described latch bolt.
9. the anti-inserting structure of a kind of door lock according to claim 1, it is characterized in that, described anti-plug oscillating bar assembly (3) also comprises the anti-plug steady pin (33) be formed in lock housing, and described anti-plug fork (31) and described 3rd bias piece (32) are set on described anti-plug steady pin (33).
10. the anti-inserting structure of a kind of door lock according to claim 9, is characterized in that, described first deflection piece (32) is that a pin is fixed on described anti-plug fork (31), and another pin is fixed on the torsion spring in lock housing.
The anti-inserting structure of 11. a kind of door lock according to claim 1, it is characterized in that, when also comprising the unblock of use key, key driven cylinder is rotated thus is driven the push rod (5) of its rectilinear motion, described push rod (5) drives described plectrum assembly (4) to rotate to unlocking direction in linear motion, thus promotes described anti-plug fork (31) and turn to described anti-tongue place by propping up described latch bolt (11).
The anti-inserting structure of 12. a kind of door lock according to claim 11, it is characterized in that, the motion path of the corresponding described latch bolt push rod (5) of described plectrum assembly (4) is formed with a protuberance (42), and described latch bolt push rod (5) promotes described protuberance (42) and rotates to unlocking direction to drive described plectrum assembly (4) in linear motion.
CN201410439304.8A 2014-08-29 2014-08-29 Door lock inserting prevention structure Active CN104234536B (en)

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Publication number Priority date Publication date Assignee Title
CN108952328A (en) * 2018-07-28 2018-12-07 陈亚南 A kind of anti-plug-in card safety door latch

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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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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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108952328A (en) * 2018-07-28 2018-12-07 陈亚南 A kind of anti-plug-in card safety door latch
CN108952328B (en) * 2018-07-28 2020-04-10 林倩妮 Anti-inserting safety door lock

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