CN201040950Y - Billiard anti-theft lock core with high anti-theft property and its matched chain type key - Google Patents

Billiard anti-theft lock core with high anti-theft property and its matched chain type key Download PDF

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Publication number
CN201040950Y
CN201040950Y CNU2007200508457U CN200720050845U CN201040950Y CN 201040950 Y CN201040950 Y CN 201040950Y CN U2007200508457 U CNU2007200508457 U CN U2007200508457U CN 200720050845 U CN200720050845 U CN 200720050845U CN 201040950 Y CN201040950 Y CN 201040950Y
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CN
China
Prior art keywords
key
lock core
tooth
overcoat
tooth portion
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Expired - Fee Related
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CNU2007200508457U
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Chinese (zh)
Inventor
马贵朋
王绥来
曾玉龙
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Individual
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Individual
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Priority to CNU2007200508457U priority Critical patent/CN201040950Y/en
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Publication of CN201040950Y publication Critical patent/CN201040950Y/en
Priority to PCT/CN2008/000798 priority patent/WO2008131641A1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/002Locks for use with special keys or a plurality of keys ; keys therefor for flexible keys
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in

Abstract

The utility model discloses a theftproof billiard lock core having high theftproof performance. The lock core has a curved keyhole channel, a lock bead hole and a lock bead, wherein the curved segment of the keyhole channel is positioned near the front segment of the keyhole opening, characterized in that the lock core consists of an upper lock core and a lower lock core which are both semicylindrical, and the upper lock core and the lower lock core are fixedly connected into a complete cylinder shape; each of the upper lock core and the lower lock core is separately provided with a channel having a curved segment and extending along axial direction of the lock core, and the two channels are corresponding with each other; after the upper lock core and the lower lock core are connected into a body, the two channels are jogged into a keyhole channel for a chain key to insert; a key outer casing hole segment is arranged at the front end of the keyhole channel, and the key outer casing hole segment is matched with a rigid key outer casing of the chain key which is matched with the lock core. The utility model also discloses a chain key matched to use with the lock core. The chain key transmits torque through a rigid key outer casing, which can prevent the key being broken in the keyhole channel.

Description

A kind of anti-theft cylinder lock core and matching used chain type key thereof with high theftproof
Technical field
The utility model relates to a kind of anti-theft cylinder lock core and matching used key, particularly relates to a kind of crooked keyhole channel that has, and can prevent simultaneously chain type key fracture anti-theft cylinder lock core and matching used chain type key thereof in keyhole channel again.
Background technology
The design of existing anti-theft cylinder lock is from keyhole shape greatly, what pellet shot from a slingshot distributed and supporting key shape is started with, but no matter how its keyhole shape and pellet shot from a slingshot distribution situation change, the keyhole channel of lock core all is straight, correspondingly key also is the vertical bar shaped of rigidity, though the improvement of this class can make the anti-theft feature of lock core improve, as: the difficulty that has perhaps improved picking lock, or improved anti-drilling performance or the like, but for the expert that unblanks, through its design feature of research, do not use supporting key, but adopt the general or special tool(s) of unblanking to reach the purpose of " opening " lock.Therefore, the improved anti-theft cylinder lock of this class is along with the growth of the time of emerging, and its theftproof performance will little by little reduce.
But in the early 1990s, the mentality of designing of anti-theft cylinder lock has had a breakthrough, the keyhole channel that lock core promptly occurred is the design of crooked shape, correspondingly matching used with it key just must change flexible structure into, just can be that key enters in the crooked keyhole channel, so that with pellet shot from a slingshot jack-up, realize rotary locking cylinder, thus unlock deadbolt.As Chinese invention patent ZL911054693 disclosed " a kind of new structure lock core and key thereof ", its main characteristics is that lock core has crooked keyhole channel, can prevent that unlocking tools such as master key from entering the pellet shot from a slingshot zone of keyhole channel back segment, thereby improve theftproof performance greatly.For the warp architecture of the keyhole channel of realizing lock core, lock core assembles after adopting split processing again, and promptly lock core is by left and right, three individual compositions of the ends; Key must be designed to chain structure, enable to enter in the crooked keyhole channel, be that key is made up of the portion of holding, toothholder, tooth portion, soft linkage and movable sleeve, tooth portion is connected in series a plurality of gear pieces by soft linkage and constitutes flexible structure, enters the active section of crooked keyhole channel as key.Its weak point is:
1, key is as easy as rolling off a log breaks in keyhole, makes that the exploitativeness of this kind lock is doubted, cause this patent application after the more than ten years do not promoted the use of.Its reason has two:
The one, because the crooked duct of the employing of the keyhole channel of this lock core, in the time of can causing on the one hand the key insertion hole road to lift implementing lock core behind the pellet shot from a slingshot rotating, discontinuity on the key active section, in the time of also can causing by key active section rotational lock core on the other hand, local moment of torsion increases.
The 2nd, because the design feature of matched key is that active section is a flexible structure, the key bit portion of this patent is made up of the gear piece of soft metal sheet and several series connection, also can adopt chain structure, and being hinged by a plurality of gear pieces constitutes.When key is inserted the lock core key duct, have only the tooth portion of key to enter the active section that keyhole channel constitutes key, be to lean on the tooth portion of key to come transfer torque when rotational lock core, because a little less than the flexible structure characteristics of aforesaid tooth portion itself cause its integral rigidity and intensity, add aforementioned reason at first, just cause key in the process of transfer torque, to be easy to cause some part to become stressed weak link, therefore, key is broken in keyhole channel, cause scrapping of lock core.
2, its anti-theft effect is thorough not enough.Because being front end, the design of the keyhole channel of this patent lock core has a bending section, back segment is provided with the pellet shot from a slingshot section, the unlocking tool that uses iron wire and so on to have the certain flexibility degree still might overcome the obstruction of bend and the pellet shot from a slingshot that will be positioned at the keyhole channel back segment backs down, and reaches the purpose of unblanking then.Therefore, though it has improved the anti-theft feature of lock core, also just improved unlocking difficulty greatly, its anti-theft effect still inadequately completely.
3, the lock core structure design is complicated, causes cost to increase.Because this patent lock core structure design is by left and right, three individual compositions of the end, with the synthetic lock core of three group of individuals, the closing line of left and right two lock core individualities is as the criterion with the keyhole channel of bending by connection element, influences the bulk strength of lock core on the one hand; Lock core structure is too complicated on the other hand, makes its technology difficulty in process big, and the assembling quality requirement height causes processing cost higher.
4, the termination of lock core openend is equipped with the fixedly fixture of key, and fixture and lock core adopt the split-type design structure, can cause the wearing and tearing of fixture in the long-term use.
5, lock core is not provided with anti-drilling element, when lock core is subjected to the malice drill of Churn drill, is easy to lock core is drilled through, and lock core is destroyed and loses function.
Summary of the invention
First purpose of the present utility model provides a kind of anti-theft cylinder lock core with high theftproof, this lock core has and the suitable key external trepanning of the key overcoat of chain type key, when the key overcoat inserts the key external trepanning of lock core and rotates, realize the unlatching of lock core.
Above-mentioned purpose of the present utility model realizes by following technical solution: a kind of anti-theft cylinder lock core with high theftproof, this lock core has crooked keyhole channel, the lock hole of bead and lock pearl, wherein the bending section of keyhole channel is positioned at the leading portion place near its key aperture, it is characterized in that lock core is made up of the upper lock core that is semicylinder and following lock core, upper lock core is fixedly linked into the complete cylinder bodily form with following lock core, respectively be provided with in described upper lock core and the following lock core one correspond to each other have a bending section, along the axially extended duct of lock core, after upper lock core and following lock core connected as one, duct amalgamation separately was can be for the keyhole channel of chain type key insertion; The leading section of described keyhole channel is provided with one section key external trepanning section, and the rigidity key overcoat of this key external trepanning section and the matching used chain type key of this lock core is suitable.
When the chain type key enters keyhole channel under thrust, the lock pearl jack-up in the hole of bead will be locked by the tooth portion of key, lock core is in state free to rotate, meanwhile the key of rigidity covers into outward in the supporting with it key external trepanning of lock core, the key overcoat, lock core rotates under the effect of key overcoat moment of torsion, realizes unblanking.
The leading section of the following lock core of semicylinder described in the utility model is provided with a columniform rotary head, and be integrated with the semicylinder of following lock core, the axial cross section that makes down lock core is " L " font, link to each other with the upper lock core complete lock core cylinder of rotary head formation of the cylinder that forms and described lock core front end down of the semicylinder part of described down lock core, the key external trepanning section of described keyhole channel front end be arranged on described under in the rotary head of lock core.
Above-mentioned rotary head has certain thickness, because rotary head is an ingredient of following lock core, key covers into outward in the key external trepanning, rotates in the process of rotary head, following lock core has the ability of bearing torque preferably, guarantees that lock core has longer application life.
In order to strengthen the anti-theft feature of the utility model lock core, the bending section of the keyhole channel of described lock core is " S " bend section of two bendings.Keyhole channel of the prior art only has a bending part, though have certain anti-theft capability, but safety still can not guarantee, the utility model adopts two or more bending parts, make the thief be difficult to lock pearl and back down, improved the anti-theft feature of this mechanical type cylinder lock greatly by instruments such as steel wires.
The two ends of keyhole channel of the present utility model are straight duct, and wherein the duct of its entrance point is straight key external trepanning, and the bending section of described keyhole channel is smooth circular arc duct, so that the entering of chain type key bit grain.
Lock core described in the utility model also has at least one anti-drilling steel ball hole, and open in the inboard of the bending segment of the keyhole channel of lock core in this anti-drilling steel ball hole, and it is positioned on the center line of maximum curvature radius of this bending part.Lock core of the prior art does not all possess anti-drilling function, lock core can damage after the malicious sabotage that is subjected to Churn drill, lock core of the present utility model has anti-drilling steel ball hole, anti-drilling steel ball is equipped with anti-drilling steel ball in the hole, when the drill bit of Churn drill is run into anti-drilling steel ball, anti-drilling steel ball will destroy drill bit, and Churn drill was lost efficacy.
Open in upper lock core in anti-drilling steel ball of the present utility model hole, also can open in following lock core.For anti-drilling function with strong lock core, also can in lock core, have a plurality of anti-drilling steel balls hole, a plurality of anti-drilling steel balls are set, make this lock core have stronger anti-drilling function.
Second purpose of the present utility model provides the matching used chain type key of a kind of and above-mentioned lock core, and this key comes transfer torque by the key overcoat of rigidity, prevents that key from interrupting in keyhole channel at rotation process.
Above-mentioned purpose of the present utility model realizes by following technical solution: a kind of chain type key, it has key handle portion and tooth portion, wherein said tooth portion is made up of tooth root and a plurality of tooth grains of serial connection successively of constituting tooth portion flexible structure, the tooth grain of tooth portion end is connected with tooth root, it is characterized in that described key handle portion is made up of key overcoat and key sliding handle, described key overcoat is the rectangular body of rigidity, has the cavity that can supply tooth portion to penetrate, this cavity and tooth portion are suitable, the key overcoat along also have on the two side of axis the symmetry the pin chute; Described key sliding handle is a blocks, have the slideway that can supply the key overcoat to pass, by this slideway the key sliding handle being sleeved on key puts outward, the key sliding handle is connected by the tooth root that pin passes key pin chute that puts and the tooth portion that is positioned at the key overcoat outward, and the key sliding handle drives tooth portion and slides in the cavity of key overcoat in the process of sliding along the key overcoat.
Chain type key of the present utility model when need not to use key to unblank, promotes the key sliding handle, and the tooth portion of key is hidden in the key overcoat; When needs are unblanked, promote the key sliding handle, the tooth grain of the series connection of the tooth root of tooth portion promotion at this moment enters in the keyhole channel of lock core, the tooth grain backs down the lock pearl of the lock core of correspondence, this moment, the front end of key overcoat also entered in the corresponding with it key external trepanning that is provided with of lock core front end, and the key sliding handle drives the key overcoat and rotates, this moment, lock core rotated under the drive of key overcoat twisting force, thereby realized the unlatching of lock core.
Key overcoat in the utility model can adopt materials such as kirsite or stainless steel to make, also can adopt engineering plastics to make with higher-strength, because in the process of unblanking, the transmission of moment of torsion is to finish by the key overcoat, so the key overcoat will have very high intensity.
The cavity of the slideway of the key sliding handle in the utility model, key overcoat, key overcoat and the tooth portion of key are the structure of tabular, are in order to satisfy the installation requirement between each part, on the other hand for transfer torque so on the one hand.
The tooth grain of key described in the utility model has along the connector of the axial equidirectional evagination of tooth portion and the link slot of indent, this connector and link slot are hinged with the link slot and the connector of adjacent tooth grain respectively, jointed shaft is axially vertical with long-chain tooth portion, form the key bit portion of long-chain formula, the tooth grain at tooth portion two ends then only has a connector or link slot, wherein the tooth root of Mo Duan tooth grain and tooth portion is hinged, and the tooth grain of front end has diminishing shape as key bit portion termination.
The shape of cross section of described tooth grain is " protruding " font, and the bottom is the part that jointed shaft is set than thickness portion, and the thin part in top is to be provided for and to lock the height parts of tooth straggly that pearl contacts.
Compared with prior art, the utlity model has following remarkable result:
1, chain type key of the present utility model has the key overcoat of rigidity, lock core has the key external trepanning suitable with this key overcoat, and this key external trepanning and keyhole channel connect, the key overcoat inserts in the key external trepanning in the process of unblanking, the rotation of the key overcoat by rigidity comes transfer torque, and the function of backing down the lock pearl only plays in the tooth portion of key, need not transfer torque, avoid traditional chain type key need use the link of the stressed weakness of key to come the situation of transfer torque, thereby also avoided the easily broken generation of phenomenon in the key external trepanning of key in the past greatly, prolonged the application life of key and lock core.
2, keyhole channel of the present utility model has two continuous bending parts, has better anti-theft feature.
3, lock core of the present utility model is made up of upper lock core and following lock core, and is simple in structure, good to neutrality in the process, good manufacturability.
4, the following lock core of lock core of the present utility model also has rotary head, the main body one machine-shaping of this rotary head and following lock core semicircle column type, because rotary head is the part of following lock core, when rotating the rotary head of following lock core by the key overcoat, be easy to drive lock core and rotate, better transfer torque.
5, lock core of the present utility model is provided with one or more anti-drilling steel balls hole, in this anti-drilling steel ball hole anti-drilling steel ball is installed, when lock core is subjected to the malice drill of Churn drill, anti-drilling steel ball will destroy the drill bit of Churn drill, it was lost efficacy, improved the anti-drilling function of lock core.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the sectional view of key and lock core decomposition texture in the utility model;
Fig. 2 is the sectional view of key and lock core assembly structure in the utility model;
Fig. 3 is the A-A sectional view of Fig. 2;
The sectional view of another angle of key and lock core assembly structure in Fig. 4 the utility model;
Fig. 5 is the B-B sectional drawing (not comprising the key part) of Fig. 4;
Fig. 6 is the C-C sectional drawing (not comprising the key part) of Fig. 4;
Fig. 7 is the overall structure schematic diagram of lock core in the utility model;
Fig. 8 is the overall structure sectional view of lock core in the utility model;
Fig. 9 is the structure chart of upper lock core in the utility model;
Figure 10 is the D-D sectional drawing of Fig. 9;
Figure 11 is the front view of following lock core in the utility model;
Figure 12 is the right view of following lock core in the utility model;
Figure 13 is the overall structure schematic diagram of key in the utility model;
Figure 14 is the overall structure sectional view of key in the utility model;
Figure 15 is the overall structure sectional view of another angle of key in the utility model;
Figure 16 is the part drawing of the tooth grain of key in the utility model.
Description of reference numerals
1 key overcoat; 2 key sliding handles; 3 lock pearls; 4 springs; 5 lock cores; 6 lock core sleeves; 7 tooth roots; 8 collars; 9 positioning balls; 10 keyhole channels; 11 upper lock cores; 12 times lock cores; 121 rotary heads; 13 cavitys; 14 jointed shafts; 15 fixing pins; 16 spring cappings; 17 tooth grains; 171 connectors; 172 link slots; 18 anti-drilling steel ball holes; 19 key external trepannings; The 20 lock hole of beads
The specific embodiment
Lock core 5 and its matching used chain type key extremely shown in Figure 6 as Fig. 1, when chain type key and lock core 5 are used, promote key sliding handle 2, tooth grain 17 is pushed in the keyhole channel 10 of lock core 5, tooth grain 17 backs down the lock pearl 3 of the lock core 5 of correspondence, lock core 5 is in state free to rotate, the front end of key overcoat 1 also enters in corresponding with it key overcoat 1 hole that is provided with of lock core 5 front ends at this moment, key sliding handle 2, driving key overcoat 1 rotates, this moment, lock core 5 rotated under the drive of key overcoat 1 twisting force, thereby realized the unlatching of lock core 5.
As Fig. 7 to lock core 5 shown in Figure 12, this lock core 5 has crooked keyhole channel 10, the lock hole of bead 20 and lock pearl 3, lock pearl 3 is installed in the lock hole of bead 20, the bending section of keyhole channel 10 is positioned at the leading portion place near its key aperture, the bending section of the keyhole channel 10 of lock core 5 is " S " bend section of two bendings, the bending section of keyhole channel 10 is smooth circular arc duct, so that the entering of chain type key bit grain 17, lock core 5 is made up of the upper lock core 11 and the following lock core 12 that are semicylinder, the leading section of the following lock core 12 of semicylinder is provided with a columniform rotary head 121, and be integrated with the semicylinder of following lock core 512, the axial cross section that makes down lock core 12 is " L " font, link to each other with the upper lock core 11 complete lock core cylinder of rotary head 121 formations of the cylinder that forms and following lock core 12 front ends of the semicylinder of following lock core 12 part, upper lock core 11 is fixedly linked into the complete cylinder bodily form with following lock core 12, the key overcoat 1 hole section of keyhole channel 10 front ends is arranged on down in the rotary head 121 of lock core 12, respectively be provided with in upper lock core 11 and the following lock core 12 one correspond to each other have a bending section, along lock core 5 axially extended ducts, after upper lock core 11 and following lock core 12 connected as one, duct amalgamation separately was can be for the keyhole channel 10 of chain type key insertion; The leading section of keyhole channel 10 is provided with one section key overcoat, 1 hole section, and the rigidity key overcoat 1 of this key overcoat 1 hole section and this lock core 5 matching used chain type keys is suitable.
Upper lock core 11 also has two anti-drilling steel ball holes 18, and open in the inboard of the bending part of the keyhole channel 10 of upper lock core 11 in this anti-drilling steel ball hole 18, and it is positioned on the center line of radius of curvature maximum of this bending part, in the anti-drilling steel ball hole 18 anti-drilling steel ball is installed.
As Figure 13 to chain type key shown in Figure 16, it has key handle portion and tooth portion, wherein tooth portion is made up of tooth root 7 and a plurality of tooth grains 17 of serial connection successively that constitute tooth portion flexible structure, the tooth grain 17 of key has along the connector 171 of the axial equidirectional evagination of tooth portion and the link slot 172 of indent, the shape of cross section of tooth grain 17 is " protruding " font, the bottom is the part that jointed shaft 14 is set than thickness portion, the thin part in top is to be provided for and to lock the height parts of tooth straggly that pearl 3 contacts, this connector 171 and link slot 172 are hinged with the link slot 172 and the connector 171 of adjacent tooth grain 17 respectively, jointed shaft 14 is axially vertical with long-chain tooth portion, form the key bit portion of long-chain formula, 17 of the tooth grains at tooth portion two ends only have a connector 171 or link slot 172, wherein terminal tooth grain 17 is hinged with the tooth root 7 of tooth portion, and the tooth grain 17 of front end has diminishing shape as key bit portion termination.
Key handle portion is made up of key overcoat 1 and key sliding handle 2, the rectangular body of the rigidity that key overcoat 1 is made for kirsite, have the cavity 13 that can penetrate for tooth portion, this cavity 13 and tooth portion are suitable, at key overcoat 1 along the pin chute that also has symmetry on the two side of axis; Key sliding handle 2 is a blocks, have the slideway that can supply key overcoat 61 to pass, by this slideway key sliding handle 2 is sleeved on the key overcoat 61, key sliding handle 2 is connected with the tooth root 7 of the tooth portion that is positioned at key overcoat 1 by the pin chute that fixing pin 15 passes on the key overcoat 1, and key sliding handle 2 drives in the cavity 13 of tooth portion at key overcoat 1 in the process of sliding along key overcoat 61 and slides.
The cavity 13 of the slideway of above-mentioned key sliding handle 2, key overcoat 1, key overcoat 1 and the tooth portion of key are the structure of tabular.

Claims (10)

1. anti-theft cylinder lock core with high theftproof, this lock core has crooked keyhole channel, the lock hole of bead and lock pearl, wherein the bending section of keyhole channel is positioned at the leading portion place near its key aperture, it is characterized in that: lock core is made up of upper lock core that is semicylinder and following lock core, upper lock core is fixedly linked into the complete cylinder bodily form with following lock core, respectively be provided with in described upper lock core and the following lock core one correspond to each other have a bending section, along the axially extended duct of lock core, after upper lock core and following lock core connected as one, duct amalgamation separately was can be for the keyhole channel of chain type key insertion; The leading section of described keyhole channel is provided with one section key external trepanning section, and the rigidity key overcoat of this key external trepanning section and the matching used chain type key of this lock core is suitable.
2. a kind of anti-theft cylinder lock core according to claim 1 with high theftproof, it is characterized in that: the leading section of the following lock core of described semicylinder is provided with a columniform rotary head, and be integrated with the semicylinder of following lock core, the axial cross section that makes down lock core is " L " font, link to each other with the upper lock core complete lock core cylinder of rotary head formation of the cylinder that forms and described lock core front end down of the semicylinder part of described down lock core, the key external trepanning section of described keyhole channel front end be arranged on described under in the rotary head of lock core.
3. a kind of anti-theft cylinder lock core with high theftproof according to claim 1 is characterized in that: the bending section of the keyhole channel of described lock core is " S " bend section of two bendings.
4. a kind of anti-theft cylinder lock core with high theftproof according to claim 3 is characterized in that: the bending section of described keyhole channel is smooth circular arc duct, so that the entering of chain type key bit grain.
5. a kind of anti-theft cylinder lock core according to claim 3 with high theftproof, it is characterized in that: described lock core also has at least one anti-drilling steel ball hole, open in the inboard of the bending segment of the keyhole channel of lock core in this anti-drilling steel ball hole, and it is positioned on the center line of maximum curvature radius of this bending part.
6. chain type key that matches with the arbitrary described lock core of claim 1 to 5, it has key handle portion and tooth portion, wherein said tooth portion is made up of tooth root and a plurality of tooth grains of serial connection successively of constituting tooth portion flexible structure, the tooth grain of tooth portion end is connected with tooth root, it is characterized in that: described key handle portion is made up of key overcoat and key sliding handle, described key overcoat is the rectangular body of rigidity, has the cavity that can supply tooth portion to penetrate, this cavity and tooth portion are suitable, the key overcoat along also have on the two side of axis the symmetry the pin chute; Described key sliding handle is a blocks, have the slideway that can supply the key overcoat to pass, by this slideway the key sliding handle being sleeved on key puts outward, the key sliding handle is connected by the tooth root that pin passes key pin chute that puts and the tooth portion that is positioned at the key overcoat outward, and the key sliding handle drives tooth portion and slides in the cavity of key overcoat in the process of sliding along the key overcoat.
7. a kind of chain type key according to claim 6 is characterized in that: described key overcoat is that kirsite or stainless steel material are made.
8. a kind of chain type key according to claim 7 is characterized in that: the cavity of the slideway of described key sliding handle, key overcoat, key overcoat and the tooth portion of key are the structure of tabular.
9. a kind of chain type key according to claim 6, it is characterized in that: the tooth grain of described key has along the connector of the axial equidirectional evagination of tooth portion and the link slot of indent, this connector and link slot are hinged with the link slot and the connector of adjacent tooth grain respectively, jointed shaft is axially vertical with long-chain tooth portion, form the key bit portion of long-chain formula, the tooth grain at tooth portion two ends then only has a connector or link slot, wherein the tooth root of Mo Duan tooth grain and tooth portion is hinged, and the tooth grain of front end has diminishing shape as key bit portion termination.
10. a kind of chain type key according to claim 9, it is characterized in that: the shape of cross section of described tooth grain is " protruding " font, the bottom is the part that jointed shaft is set than thickness portion, and the thin part in top is to be provided for and to lock the height parts of tooth straggly that pearl contacts.
CNU2007200508457U 2007-04-27 2007-04-27 Billiard anti-theft lock core with high anti-theft property and its matched chain type key Expired - Fee Related CN201040950Y (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNU2007200508457U CN201040950Y (en) 2007-04-27 2007-04-27 Billiard anti-theft lock core with high anti-theft property and its matched chain type key
PCT/CN2008/000798 WO2008131641A1 (en) 2007-04-27 2008-04-18 Antitheft lock core and the matching chain-type key

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Application Number Priority Date Filing Date Title
CNU2007200508457U CN201040950Y (en) 2007-04-27 2007-04-27 Billiard anti-theft lock core with high anti-theft property and its matched chain type key

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CN2496996Y (en) * 2001-08-07 2002-06-26 周树成 Chain type rheid-changing key lock head
US6666057B1 (en) * 2003-01-21 2003-12-23 Chiu-Mei Huang Lock with a fixable key
CN2615258Y (en) * 2003-02-11 2004-05-12 兴联泰股份有限公司 Lock cylinder
CN2806679Y (en) * 2005-06-08 2006-08-16 黄芳茗 Lock set containing chain joint flexile key and tooth curved type lock cylinder
CN1302193C (en) * 2005-08-11 2007-02-28 黄芳茗 Chain link soft key, tooth-sheet bent-curved core lock set
CN201040950Y (en) * 2007-04-27 2008-03-26 马贵朋 Billiard anti-theft lock core with high anti-theft property and its matched chain type key

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008131641A1 (en) * 2007-04-27 2008-11-06 Guipeng Ma Antitheft lock core and the matching chain-type key
CN101638950B (en) * 2009-08-04 2012-10-03 李振宇 Expanded key and lock core used with same
CN102146748A (en) * 2011-03-16 2011-08-10 梁学鹏 Spring lock with anti-theft function and flexible key matched with spring lock
CN103806748A (en) * 2012-11-11 2014-05-21 颜群 Door opening handle containing cam
CN103806748B (en) * 2012-11-11 2017-05-10 颜群 Door opening handle containing cam
CN103276965A (en) * 2013-06-08 2013-09-04 张胜利 Anti-theft spring lock cylinder and key thereof

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