CN202249233U

CN202249233U - Theft-proof lock head

Info

Publication number: CN202249233U
Application number: CN2011203203688U
Authority: CN
Inventors: 李浩远
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-05-30
Anticipated expiration: 2021-08-30

Abstract

The utility model discloses a theft-proof lock head, which comprises a shell, a lock cylinder, a locking key, a shrapnel interaction key and the like, wherein the surface of the lock cylinder is provided with a key slot in the direction parallel to the axis of the lock cylinder, and the key slot is formed by connecting an inner key slot close to the center of the lock cylinder and an outer key slot far away from the center of the lock cylinder, wherein the inner key slot is narrower than the outer key slot in the radial direction of the lock cylinder; the shrapnel interaction key is narrower than the inner key slot in the radial direction of the lock cylinder; and during unlocking, one end of the locking key is separated from a groove in the inner wall of the shell and falls into the key slot. During illegal unlocking, the shrapnel interaction key is limited by the narrow inner key slot and cannot mistakenly slide into a V-shaped slot of a transformed shrapnel, and the head of the locking key is clamped between the outer key slot and the groove in the inner wall of the shell to block the lock cylinder from continuously rotating, so that illegal unlocking is effectively prevented.

Description

The theftproof lock tapered end

Technical field

The utility model relates to a kind of tapered end of theftproof lock.

Background technology

The Along with people's growth in the living standard, people are also increasingly high to the requirement of the theftproof performance of lock.But part theftproof lock of the prior art is because there is defective in design; When running into when using master key illegally to unblank, tapered end is easy to be opened, for example; Fig. 1 a and Fig. 1 b are a kind of theftproof locks common in the prior art, because the volume of theftproof lock is little; The degree of depth that is positioned at keyway on the lock core shell inwall, that hold locking key generally has only 1～0.8 millimeter; When running into master key and illegally unblank, thereby the locking key run-off the straight is easy to slip in the teeth groove that changes pellet shot from a slingshot, and theftproof lock is illegally opened.In addition, along with the theftproof lock passing of service time, keyway and locking key are worn, and make keyway and locking key become slick and sly at the A place, and when master key was illegally unblanked, locking key was more prone to slip in the teeth groove that changes shell fragment, and theftproof lock is more prone to by illegal unlatching.

Summary of the invention

To the prior art theftproof lock after wearing and tearing easily by the defective of illegal unlatching, the utility model provides that a kind of theftproof performance is good, master key can't be with the theftproof lock of its unlatching.

The technical scheme that the utility model is taked is: a kind of tapered end of theftproof lock; Comprise parts such as shell, lock core, locking key, the interactive key of shell fragment; On the direction of plug face and lock core shaft's line parallel, offer keyway; The interactive key of shell fragment is arranged in keyway, it is characterized in that: described keyway is by connecting to form near the internal keyway at lock core center with away from the outside keyway at lock core center, wherein the width that directly makes progress at lock core less than outside keyway of the width that directly makes progress at lock core of internal keyway; The width that the interactive key of said shell fragment directly makes progress at lock core less than internal keyway at lock core width radially; The interactive key of described shell fragment is arranged in keyway, and during locking, locking key one end is arranged in the groove 13 on the outer casing inner wall; When unblanking, locking key breaks away from described groove and goes in the keyway.Because theftproof lock has internal keyway and outside keyway; And internal keyway is littler at lock core width radially than outside keyway at lock core width radially; When using external enwergy key or other instruments illegally to unblank, after lock core rotated, the interactive key of shell fragment received narrower internal keyway restriction and can not slip into by error in the V-type groove of conversion shell fragment; And locking key then is stuck in and stops lock core to be rotated further between the groove on outside keyway and the outer casing inner wall, thereby prevents effectively illegally to unblank.

As the improvement of the utility model, the junction of internal keyway and outside keyway is designed to chamfering or arc transition is connected, help when using this lock key normally to unblank, the interactive key of shell fragment gets into internal keyway smoothly, makes and unblanks smoothly.

As another improvement of the utility model, locking key has a head that width is slightly wideer than the neck that is attached thereto on lock core cross section radially, and during locking, described head is arranged in the keyway of outer casing inner wall.When the theftproof lock experience was illegally unblanked, the locking key that has head construction met with when illegally unblanking, and the head of its broad is stuck between the groove on outside keyway and the outer casing inner wall more easily, more can prevent effectively illegally to unblank.

As the another improvement of the utility model, on locking key, offer the groove that is used to settle reposition element.Like this, with respect to the technology of offering the slotted eye that reposition element is installed in the prior art in the enclosure on the wall, the theftproof lock of the utility model is more convenient in manufacturing process and assembling, helps enhancing productivity.

Description of drawings

Fig. 1 a～Fig. 1 b be in the prior art theftproof lock tapered end by the sketch map of the illegal enforced opening of master key;

Fig. 2 is the utility model lock core assembling sketch map;

Fig. 3 a, Fig. 3 b, Fig. 3 c are that the utility model is in the sketch map of normally unblanking; Wherein Fig. 3 b and Fig. 3 c be respectively Fig. 3 a at the B-B place sectional view, the internal state of lock core when the former representes that this lock key inserts theftproof lock, the latter representes that this institute key inserts behind the theftproof lock and key drives the internal state after lock core rotates 90 degree.

Fig. 4 a, Fig. 4 b, Fig. 4 c are the sketch mapes that the utility model is in blocking, and wherein Fig. 4 a is the internal state of key lock core when not inserting theftproof lock as yet; Fig. 4 b is a master key when inserting anti-theft lock core and not rotating as yet, and Fig. 4 a is at the sectional view at D-D place; Fig. 4 c is that Fig. 4 a was at the sectional view at D-D place after the master key insertion lock core and the lock core of unblanking by force turned an angle.

Fig. 5 a is a kind of embodiment sketch map of locking key, and Fig. 5 b is the sectional view of Fig. 5 a at the T-T place.

Specific embodiment

Be elaborated below in conjunction with the theftproof lock of accompanying drawing to the utility model.Among the figure: shell 1, key 2, lock core 3, the interactive key 4 of shell fragment, locking key 5, locking key head 51, locking key neck 52, back-moving spring 6, conversion shell fragment 7, straight pin 8, rotation are dialled chi 9, jump ring 10, spring pressure bit slice 11, keyway 12, internal keyway 121, outside keyway 122, groove 13 (being positioned on the outer casing inner wall), groove 14.

Fig. 2 is the utility model theftproof lock assembling sketch map.Among the figure; Upwards offer several through slots that are arranged in parallel that pass vertically and intersect at the lock core axis in lock core 3 footpaths; A pair of conversion shell fragment 7 alternatively is arranged in each through slot; A spring that is used to reset 6 is set on the every conversion shell fragment, offers a v-notch near a side of the interactive key of shell fragment on the conversion shell fragment.Direction at lock core periphery and lock core shaft's line parallel is offered keyway 12; Keyway 12 is by connecting to form near the internal keyway 122 of lock core central axis with away from the outside keyway 121 of lock core central axis, wherein the width that directly makes progress at lock core less than outside keyway 121 of the width that directly makes progress at lock core of internal keyway 122.The interactive key 4 of shell fragment is strips and is the flat key of V-type near the radial cross-section of a side of lock core main line; The interactive key 4 of shell fragment be arranged in keyway 12 and than locking key 5 more near the lock core axis, the width (referring to Fig. 3 b, Fig. 3 and Fig. 4 b, Fig. 4 c) that the interactive key 4 of shell fragment directly makes progress at lock core less than internal keyway 122 at lock core width radially.On position corresponding on shell 1 inwall, offer groove 13 with locking key 5; During locking, an end of locking key 5 is arranged in groove 13, and the other end is arranged in outside keyway 121; After this institute key inserted theftproof lock, the head of locking key 5 broke away from groove 13 and falls into outside keyway 121.Locking key 5 resets through back-moving spring 6.Offer a jump ring groove at lock core 3 away from an end of keyhole; After each component-assembled is gone into lock core 3 and lock core is assembled into lock body shell 1; Jump ring 10 is snapped in the jump ring groove that is arranged in

lock core

3, and 10 pairs of lock cores of jump ring play axial location, prevent lock core in the course of work along lock core shaft to the production displacement.Offer a pin-and-hole perpendicular to the lock core periphery at lock core 3 away from an end of keyhole, straight pin 10 passes this pin-and-hole and inserts to be positioned at and rotate that the pin-and-hole of dialling chi one end will rotate group chi and lock core links together.

The operating principle of present embodiment is: during locking; Referring to Fig. 4 a figure, 4b; Conversion shell fragment 7 is in the interlaced arrangement of v-notch on it under the effect of back-moving spring 6, and the interactive key 4 of shell fragment does not fall into the V-type groove of conversion shell fragment 7, the interactive key 4 of shell fragment with locking key 5 radially toward direction jack-up away from the lock core center line; Make the end entering of locking key 5 be arranged in the groove 13 on the outer casing inner wall; At this moment, the other end of locking key 5 is arranged in outside keyway, and locking key 5 makes it lock core 3 lockings can not rotate with respect to shell 1.Referring to Fig. 3 a, Fig. 3 b and Fig. 3 c; When using this lock key 2 to unblank, each conversion shell fragment 7 is arranged in straight line at the V breach on it under the extruding of key bit, and the interactive key 4 of shell fragment falls into described V-type groove; Locking key 5 then disengaging is positioned at the groove 13 on the outer casing inner wall; Fall into keyway 20, lock core 3 can rotate with respect to shell 1 under the drive of key 2, drives simultaneously to rotate to dial the chi rotation; Realization is unblanked, and wherein Fig. 3 c is depicted as 2 insertions of this lock key and drives lock core 3 and revolves the state after turning 90 degrees.Referring to Fig. 4 b, 4c, when master key inserted lock core 3, the v-notch of part conversion shell fragment 7 was arranged in a line; And the v-notch of part conversion shell fragment 7 can not be arranged in a line, and the interactive key 4 of shell fragment can not fall into v-notch, for theftproof lock traditional, that do not possess interior outside keyway; If be rotated further key 2 this moment; The interactive key 4 of shell fragment might slip in the v-notch of not arranging in a line as yet, and the v-notch of all conversion shell fragments 7 is arranged in a line, and makes the interactive key 4 of shell fragment; And making locking key 5 disengaging grooves 13 fall into outside keyway 121, this will cause theftproof lock illegally to be opened.But, when this practical core is illegally opened at theftproof lock experience master key, the v-notch alinement of part conversion shell fragment 7; Even at this moment be rotated further key, the interactive key 4 of shell fragment can not slip into as yet in the v-notch of alinement not, because the keyway 12 of the theftproof lock of the utility model is made up of outside keyway 121 and internal keyway 122 by error yet; Master key inserts the continued key, and then internal keyway is less at the width that lock core directly makes progress, and has limited the displacement of the interactive key 4 of shell fragment; And; Locking key 5 is stuck in when being rotated further key between the groove 13 and outside keyway 20 of outer casing inner wall, has limited the rotation of key, has also limited the displacement of locking key 5 with the interactive key 4 of shell fragment; Therefore prevent interactive key 4 mistakes of shell fragment slip into do not arrange in a line as yet v-notch in, use master key illegally to unblank thereby effectively stop.

For the theftproof lock that makes the utility model when normally unblanking, the interactive key 4 of shell fragment can fall on the conversion shell fragment 7 V-type groove smoothly, internal keyway preferably is connected through chamfering or arc transition with outside keyway.

In order further to improve the theftproof performance of lock; Locking key 5 preferred its heads 51 structure slightly wideer than neck 52; Because when adopting the structure of head 51 of broad, when master key inserted lock core and rotates very little angle, the head of broad was easy to be stuck in groove 13 and the outside keyway 121 on the outer casing inner wall (referring to Fig. 4 c and Fig. 5 b); More can stop master key to be rotated further effectively, thereby theftproof performance be better.In preferred version, locking key 5 preferably has the spindle shape of head, neck and belly at lock core cross section radially, and referring to Fig. 5 a, Fig. 5 b, this interface also can be a T font structure.

In traditional theftproof lock; Offer on the general wall in the enclosure the reposition element spring peace pearl that is used to place locking key 5 groove, still, operating difficulties during recessing on the wall in the enclosure; And assembling is inconvenient; For this reason, the theftproof lock of the utility model is offered the groove 14 of placing reposition element on locking key 5, referring to Fig. 2,5a.Said groove 14 is used to place spring 2 and spring pressuring plate 11.Described groove can be one, also can be several that are uniformly distributed with.Locking key 5 is when adopting two grooves to place back-moving spring, and is more steady than the operation of having only a groove placement back-moving spring, in addition, in described groove, can on described each spring 6, place spring pressuring plate 11, makes the operation of spring 6 more steady.

Claims

1. the tapered end of a theftproof lock; Comprise shell (1), lock core (3), the interactive key (4) of shell fragment, locking key parts such as (5); On the direction of lock core (3) surface and lock core shaft's line parallel, offer keyway (12); The interactive key of shell fragment (4) is arranged in keyway (12); It is characterized in that: described keyway (12) is by connecting to form near the internal keyway (122) of lock core central axis with away from the outside keyway (121) of lock core central axis, the width that directly makes progress at lock core less than outside keyway (121) of the width that directly makes progress at lock core of internal keyway (122) wherein, the width that the interactive key of said shell fragment (4) directly makes progress at lock core less than internal keyway (122) at lock core width radially; During locking, an end of locking key (5) is arranged in the groove (13) on the outer casing inner wall; When unblanking, locking key (5) breaks away from described groove (13) and gets in the keyway (12).

2. the tapered end of theftproof lock according to claim 1, it is characterized in that: described internal keyway (122) is connected through chamfering or arc transition with external key (121) groove.

3. theftproof lock tapered end according to claim 1 and 2; It is characterized in that: described locking key (5) has the width head (51) slightly wideer than the neck that is attached thereto (52) on the lock core radial section; During locking, described head (51) is arranged in the groove (13) of outer casing inner wall.

4. theftproof lock tapered end according to claim 3 is characterized in that: described locking key (5) preferably has the spindle shape of head, neck and belly at lock core cross section radially.

5. theftproof lock tapered end according to claim 3 is characterized in that: offer a Baltimore groove (14) of placing reposition element on the described locking key at least.

6. theftproof lock tapered end according to claim 5 is characterized in that: described Baltimore groove (14) is for symmetrically arranged a pair of, and described locking key (5) is the E font on the whole.