CN107165486B

CN107165486B - Idle lock core lockset

Info

Publication number: CN107165486B
Application number: CN201710553658.9A
Authority: CN
Inventors: 李吉源
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-08
Filing date: 2017-07-08
Publication date: 2023-05-05
Anticipated expiration: 2037-07-08
Also published as: CN107165486A

Abstract

The invention discloses an idling lock core lockset, wherein a lock core comprises an outer sleeve body, an inner sleeve body, a lock plate group and a lock plate clamping device, when a wrong key is inserted, the lock plate clamping device is not limited to the lock plate group, the key can only drive the lock plate to idle in the inner sleeve body, and when the key is inserted, the lock plate clamping device is limited to the lock plate group, and the key can realize unlocking; the side wall of the lock hole of at least one first lock plate is provided with a first driven side surface and a first height limiting top surface, the side wall of the lock hole of at least one second lock plate is provided with a second driven side surface and a second height limiting top surface, the first driven side surface and the second driven side surface are staggered back and forth in the rotation direction of the lock plate, and the first height limiting top surface and the second height limiting top surface are staggered with each other along the radial direction of the lock plate; the key is provided with a plurality of teeth back and forth along the insertion direction thereof. The key is matched with the height limiting surface by utilizing the side surfaces staggered with each other in the locking plate, so that the key has the advantages of simplified structure, low cost and more number matching.

Description

Idle lock core lockset

Technical Field

The invention relates to the field of locks, in particular to an idling lock core lock.

Background

Locks are a common anti-theft tool. Cylinder locks are widely used because of their simple structure and practicality. The structure of the cylinder lock is approximately the same, namely a group of cylindrical cylinders are arranged in the cylinder holes of the lock cylinder, the key is provided with teeth with corresponding depth, the corresponding cylinders are moved up and down by the different heights of the teeth of the key during unlocking, the height of each cylinder is positioned at the interface of the outer sleeve body and the lock cylinder, and then the key is rotated to drive the lock cylinder, so that the aim of unlocking is fulfilled. The lock has the tooth-pulling channel, and under the condition of not touching the marble, the foreign matter can easily enter the inner end of the key hole, and various unlocking tools are inserted through the tooth-pulling channel to carry out technical unlocking, so that the safety is poor. In view of this, people have developed the idle running lock that has the locking plate, and when key and idle running lock's key passageway mismatch, the lock core can only idle running in the overcoat body, can not realize unblanking, can only drive the lock core through the locking plate and rotate when the key matches, realizes unblanking to effectively promoted the theftproof performance of tool to lock. However, most existing idle locks adopt cylindrical keys and correspond to the cylindrical key channels, teeth on the keys are matched with poking teeth on the inner edges of locking plates during unlocking, and the unlocking positions can be found only by rotating and positioning the keys back and forth during unlocking due to small contact area between the teeth and the poking teeth, so that the practicability of the lockset is reduced, meanwhile, the key quantity of the lockset is small, the number allocation is limited, the lockset is easy to open by locksmiths, and the safety is poor.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides the idle lock core lockset with strong anti-theft performance and simple and practical structure.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the lock comprises a lock core and a key, wherein the lock core comprises a fixed outer sleeve body, a rotatable inner sleeve body, a lock plate group and a lock plate clamping device, the inner sleeve body is rotatably arranged in the outer sleeve body, the lock plate group is rotatably arranged in the inner sleeve body, the lock plate group comprises a plurality of lock plates which are sequentially overlapped and arranged along the key insertion direction of the inner sleeve body, and a lock hole for a key to pass through is formed in the center of each lock plate; when an incorrect key is inserted, the locking plate clamping device is not limited to the locking plate group, the key can only drive the locking plate to idle in the inner sleeve body, when the correct key is inserted, the locking plate clamping device is limited to the locking plate group, the key can drive the inner sleeve body to rotate through the locking plate group to realize unlocking,

the side wall of the lock hole of at least one first lock plate is provided with a first driven side surface and a first height limiting top surface, the side wall of the lock hole of at least one second lock plate is provided with a second driven side surface and a second height limiting top surface, the first driven side surface and the second driven side surface are staggered back and forth in the rotation direction of the lock plate, and the first height limiting top surface and the second height limiting top surface are staggered with each other along the radial direction of the lock plate;

the shape and the size of the cross section of the key are matched with those of the lock hole, a plurality of tooth parts are arranged on the front and the back of the key along the insertion direction of the key, and each tooth part corresponds to each lock plate in a one-to-one mode; the first tooth part is correspondingly matched with the first locking plate, the first tooth part is provided with a first poking side surface which is used for propping against the first driven side surface of the first locking plate, and the first tooth part is provided with a first step surface which is matched with the first height limiting top surface of the first locking plate in height; the second tooth part is correspondingly matched with the second locking plate, the first tooth part is provided with a second poking side surface which is propped against the second driven side surface of the second locking plate, and the second tooth part is provided with a second step surface which is matched with the height of the second height limiting top surface of the second locking plate.

As a preferred embodiment: the locking holes of the locking plate groups are identical in structure, and at least a first driven side face, a first height limiting top face, a second driven side face and a second height limiting top face are arranged on the same side wall of the locking hole on the same locking plate.

As a preferred embodiment: the key is a flat body and is provided with a left side surface, a right side surface and a narrower upper side surface and a narrower lower side surface, and the tooth parts are vertical concave-convex steps on the narrower upper side surface and/or the narrower lower side surface.

As a preferred embodiment: the lockhole has left and right sides wall, and the upper portion of right side wall is provided with first driven side, first limit for height top surface, second driven side, second limit for height top surface, third driven side and third limit for height top surface, and wherein, first driven side, second driven side and third driven side are in proper order from front to back dislocation set in the direction of rotation of locking plate, and first limit for height top surface, second limit for height top surface and third limit for height top surface are in order from high to low dislocation set along the radial of locking plate.

As a preferred embodiment: the lower part of lockhole left side wall is provided with first driven side, first limit for high top surface, second driven side, second limit for high top surface, third driven side and third limit for high top surface, and wherein, first driven side, second driven side and third driven side are in proper order from front to back dislocation set in the direction of rotation of locking plate, and first limit for high top surface, second limit for high top surface and third limit for high top surface are in order from high to low dislocation set along the radial of locking plate.

As a preferred embodiment: the locking plate clamping device comprises an elastic thrust device, a locking plate clamping pin and a limiting groove arranged on the side wall of the inner sleeve body, wherein the limiting groove is radially penetrated through the side wall of the inner sleeve body and axially extends, the locking plate clamping pin can be radially movably arranged in the limiting groove, and the elastic thrust device provides a trend that the locking plate clamping pin keeps moving radially inwards; a clamping groove is formed in the outer ring surface of each locking plate; when the arrangement of the positions of the clamping grooves of all the locking plates is matched with the shape of the locking plate clamping pins, the locking plate clamping pins are pushed by the elastic pushing device to be embedded into the clamping grooves of the locking plates, and the locking plate group drives the inner sleeve body to rotate through the locking plate clamping pins so as to realize unlocking; when the clamping grooves of all the locking plates are not in a straight line, the locking plate clamping pins cannot be embedded into the clamping grooves.

As a preferred embodiment: the lock cylinder also comprises a lock plate positioning sleeve, the lock plate positioning sleeve comprises an end plate and a cylinder body, the end plate is integrally connected to one end of the cylinder body, a key hole is formed in the end plate, a key channel is formed in the axial direction of the cylinder body, the key hole is communicated with the key channel, through grooves for extending out of two sides of a key are formed in the key channel, and the lock plate group is sleeved outside the cylinder body; the key hole in the cylinder body runs through the cylinder body along the vertical direction, so that the cylinder body is divided into a left half cylinder and a right half cylinder, wherein the upper part of the left half cylinder is convexly extended with a convex strip, the upper part corresponding to the left side wall of each locking plate is provided with a guide pushing surface, and when unlocking, the convex strip is used for acting on the guide pushing surface of each locking plate.

As a preferred embodiment: the locking plate positioning sleeve is characterized in that a sleeve positioning groove is further formed in the locking plate positioning sleeve, a sleeve clamping device is arranged in the outer sleeve body correspondingly, the sleeve clamping device comprises a spring and a clamping block, the spring pushes the clamping block to abut against the locking plate positioning sleeve, when a key is unlocked and rotates in place, the clamping block is correspondingly embedded into the sleeve positioning groove, a gear is provided for the locking plate positioning sleeve, and the unlocking position of the locking plate positioning sleeve is maintained.

As a preferred embodiment: the lock further comprises an idle piece matched with the free tail end of the key, the end face of the idle piece is provided with a non-circular caulking groove or a shaft hole matched with the shape of the free tail end of the key, the idle piece is arranged in the lock plate accommodating hole, the caulking groove or the shaft hole is opposite to the key channel, the tail part of the key is correspondingly provided with a convex block which is matched with the shape of the round caulking groove or the shaft hole, and the idle part can be driven by the key to rotate relative to the lock plate accommodating hole.

As a preferred embodiment: the lock cylinder is provided with an idle piece locating hole, the side wall of the idle piece is provided with an idle piece locating groove corresponding to the idle piece locating hole, the outer side of the idle piece locating hole is provided with an annular groove, the annular groove is communicated with the idle piece locating hole, an idle piece locating bead is arranged in the idle piece locating hole, an elastic clamp is arranged in the annular groove, the elastic clamp is blocked at the outer end of the idle piece locating bead, and when the idle piece locating hole is aligned with the idle piece locating groove, the inner end of the idle piece locating bead is abutted to the idle piece locating groove.

Compared with the prior art, the invention has obvious advantages and beneficial effects, in particular, the key is matched with the limited height surface by arranging the side surfaces which are staggered with each other on the side wall of the lock plate, so that the structure of the key is simplified, the key can be manufactured in a die casting or forging mode, the turning pin is not needed, the key process is various, the quality of the key is improved, and the cost is reduced. Secondly, each tooth part of the key matched in the mode can be a step which is high and low in width, so that the depth of the groove of the tooth part can be larger, the level is more, and the number of changeable numbers is more. Furthermore, through setting up locking plate positioning sleeve and supporting structure, successfully solved the idle key and dialled the difficult problem of key, improved user's use experience.

For a clearer description of the structural features, technical means, and specific objects and functions achieved by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments:

drawings

FIG. 1 is an assembled block diagram of an embodiment of the present invention;

FIG. 2 is a preliminary exploded view of the internal structure of an embodiment of the present invention;

FIG. 3 is a further exploded view of the internal structure of an embodiment of the present invention;

FIG. 4 is an exploded view of a locking plate set according to an embodiment of the present invention;

FIG. 5 is a front view of a locking plate structure according to an embodiment of the present invention;

FIG. 6 is an enlarged block diagram of a key in an embodiment of the invention;

FIG. 7 is a cross-sectional view of an assembled internal structure of an embodiment of the present invention;

FIG. 8 is an enlarged block diagram of a locking tab locating sleeve according to an embodiment of the invention;

Detailed Description

As shown in fig. 1-8, an idling lock core lockset comprises a lock core 1 and a key 7, wherein the lock core 1 comprises a fixed outer sleeve body 10, a rotatable inner sleeve body 20, a lock plate group 30 and a lock plate clamping device 40, the inner sleeve body 20 is rotatably arranged in the outer sleeve body 10, the lock plate group 30 is rotatably arranged in the inner sleeve body 20, the lock plate group 30 comprises a plurality of lock plates 31, the lock plates 31 are sequentially overlapped and arranged along the key insertion direction of the inner sleeve body 20, and a lock hole 32 for a key to pass through is arranged in the center of each lock plate 31.

In this embodiment, the lock plate set 30 includes six lock plates 31, and a spacer 32 is disposed between two adjacent lock plates 31 to prevent rotation of the two adjacent lock plates 31 from interfering with each other. The six locking plates 31 have the same structure, the outer side edge of each locking plate 31 is provided with a clamping groove 33 for being matched with the locking plate clamping device 40, the locking hole 32 of each locking plate 31 is provided with a left side wall and a right side wall, the upper part of the right side wall is provided with a first driven side surface 341, a first height limiting top surface 342, a second driven side surface 351, a second height limiting top surface 352, a third driven side surface 361 and a third height limiting top surface 362, wherein the first driven side surface 341, the second driven side surface 351 and the third driven side surface 361 are sequentially arranged in a staggered mode from front to back in the rotating direction of the locking plate, and the first height limiting top surface 342, the second height limiting top surface 352 and the third height limiting top surface 362 are sequentially arranged in a staggered mode from high to low in the radial direction of the locking plate.

As can be seen from fig. 5, the lower portion of the left sidewall of the lock hole 32 is also provided with a first driven side 341, a first height-limiting top 342, a second driven side 351, a second height-limiting top 352, a third driven side 361 and a third height-limiting top 362, where the first driven side 341, the second driven side 351 and the third driven side 361 are sequentially staggered from front to back in the rotation direction of the lock piece, and the first height-limiting top 342, the second height-limiting top 352 and the third height-limiting top 362 are sequentially staggered from high to low in the radial direction of the lock piece.

As can be seen from fig. 6, the key 7 has a cross section having a shape and size matching those of the lock hole 32, and six

teeth

71, 72, 73 are provided on the front and rear sides of the key 7 in the insertion direction, the key 7 is a flat body having wide left and

right side surfaces

701, 702 and narrow upper and

lower side surfaces

703, 704, and the

teeth

71, 72, 73 are vertically uneven on the narrow upper side surface 703 and/or the lower side surface 704. When unlocking, each tooth part corresponds to each locking plate 31 in a one-to-one mode; wherein the first tooth portion 71 is correspondingly matched with the first locking piece 31, the first tooth portion 31 has a first poking side surface 711 for pushing against the first driven side surface 341 of the first locking piece, and the first tooth portion 71 has a first step surface 712 adapted to the height of the first height limiting top surface 342 of the first locking piece; the second tooth 72 is correspondingly matched with the second locking piece, the second tooth 72 has a second poking side face 721 for pushing against the second driven side face 341 of the second locking piece, and the second tooth 72 has a second step face 722 matched with the height of the second height limiting top face 342 of the second locking piece. The third tooth 73 is correspondingly matched with the third locking plate, the third tooth 73 is provided with a third poking side 731 for pushing against the third driven side 351 of the third locking plate, and the third tooth 73 is provided with a third step surface 732 matched with the height of the third height-limiting top surface 352 of the third locking plate. The fourth tooth portion is correspondingly matched with the fourth locking plate, the fifth tooth portion is correspondingly matched with the fifth locking plate, the sixth tooth portion is correspondingly matched with the sixth locking plate, and the like.

In this embodiment, the first tooth portion, the second tooth portion and the third tooth portion are in a group, the fourth tooth portion, the fifth tooth portion and the sixth tooth portion are in a second group, and the step heights of the two groups are repeated, but the front and rear positions are different, so that the number distribution number of the lock can be increased.

As can be seen from fig. 3, the locking plate locking device 40 includes an elastic pushing device 41, a locking plate locking pin 42 and a limiting groove 21 disposed on the side wall of the inner sleeve 20, wherein the limiting groove 21 radially penetrates the side wall of the inner sleeve and axially extends, the locking plate locking pin 42 is movably disposed in the limiting groove 21 in a radial direction, and the elastic pushing device 41 provides a tendency that the locking plate locking pin 42 keeps moving radially inwards; a clamping groove 33 is arranged on the outer ring surface of each locking plate 31; when the arrangement of the positions of the clamping grooves 33 of all the locking plates 31 is matched with the shape of the locking plate clamping pins 42, the locking plate clamping pins 42 are pushed by the elastic pushing device 41 to be embedded into the clamping grooves 33 of the locking plates 31, and the locking plate group 30 drives the inner sleeve body 20 to rotate through the locking plate clamping pins 42, so that unlocking is realized; the locking plate locking pin 42 in this embodiment is a straight bar, and of course, the shape thereof can be configured as an arc, a bent body, etc. as required. When the locking grooves 33 of all the locking pieces 31 are not in a straight line, the locking piece locking pin 42 described above cannot be inserted into the locking groove 33.

The lock also comprises a lock plate positioning sleeve 50, and the lock plate positioning sleeve 50 can be used for pre-positioning the lock plate group 30, so that each lock plate 31 in the lock plate group 30 is limited to rotate within a certain range and is not disordered. The locking plate positioning sleeve 50 comprises an end plate 51 and a cylinder 52, the end plate 51 is integrally connected to one end of the cylinder 52, a key hole 53 is formed in the end plate 51, a key channel 54 is formed in the axial direction of the cylinder 52, the key hole 53 is communicated with the key channel 54, through grooves 55 are formed in the key channel 54, two sides of a key extend out, and the locking plate group 30 is sleeved on the outer side of the cylinder 52. When the key 7 is inserted, the positioning sleeve 50 rotates synchronously with the key 7.

Referring to fig. 8, the key channel 54 in the cylinder 52 extends vertically through the cylinder 52 to divide the cylinder 52 into a left half 521 and a right half 522, wherein a protrusion 56 protrudes from the upper portion of the left half 521, a guiding surface 37 is provided on the upper portion of the left side wall of each lock piece 31, and when unlocking, the protrusion 56 acts on the guiding surface 37 of each lock piece, and since the protrusion 56 is a straight bar and extends in the key insertion direction, the protrusion 56 can guide each lock piece 31, and the lock hole of each lock piece 31 can be aligned, so that the lock piece 31 does not interfere with the extraction of the key, and the key can be extracted very smoothly.

Wherein the upper portion of the right barrel half 522 is provided with a relief notch 57 so that each tooth on the key toggles the

side surfaces

711, 721, 731 to act on the driven

side surfaces

341, 351, 361 of each locking tab.

And a sleeve positioning groove 58 is further formed in the lock plate positioning sleeve 50, and a sleeve clamping device 80 is correspondingly arranged in the outer sleeve body 10, wherein the sleeve clamping device 80 comprises a spring 81 and a clamping block 82, the spring 81 pushes the clamping block 82 to abut against the lock plate positioning sleeve 50, when a key is unlocked and rotated in place, the clamping block 82 is correspondingly embedded into the sleeve positioning groove 58 to provide a gear for the lock plate positioning sleeve 50, and the unlocking position of the lock plate positioning sleeve 50 is kept, so that the pulling-out angle of the key 7 is determined more accurately. The sleeve positioning groove 58 is preferably a V-shaped groove, and the V-shaped groove is arranged at the lower end of the clamping block 82, so that the positioning precision of the sleeve positioning groove can be further improved, and a user can conveniently and smoothly dial out a key.

Referring to fig. 3, the free end of the key is provided with a non-circular caulking groove or shaft hole 61 adapted to the shape of the free end of the key, the free end of the free end 60 is provided with a non-circular caulking groove or shaft hole 61 adapted to the shape of the free end of the key, the free end 60 is arranged in the inner sleeve 20, the caulking groove or shaft hole 61 is opposite to the key channel, the tail of the key 7 is correspondingly provided with a protruding block 77 adapted to the shape of the circular caulking groove or shaft hole, and the free end 60 can be driven by the key to rotate relative to the inner sleeve 20. By providing the cooperation of the projection 77 with the non-circular groove 61, the number of key numbers can be increased by changing the angle of the projection 77.

The inner sleeve body 20 is provided with an idle piece clamping device 90, the idle piece clamping device 90 comprises an annular clamp spring 91 and two clamping beads 92, two gear grooves 62 are arranged on the outer side face of the idle piece 60 correspondingly, and the annular clamp spring 91 acts on the clamping beads 92 and is positioned in the two gear grooves 62.

In use, when an incorrect key is inserted, the locking plate locking device 40 is not limited to the locking plate set 30, i.e. the locking grooves 33 of the locking plates are not aligned, the locking plate locking pin 42 cannot sink into the locking groove 33 of the locking plate, and the key 7 can only drive the locking plate 31 to idle in the inner sleeve body 20.

After the correct key 7 is inserted, the locking plate locking device 40 is limited to the locking plate set 30, as shown in fig. 7, the key 7 rotates clockwise, and can smoothly push the locking grooves 33 of the six locking plates to a straight line and rotate to the position of the locking plate locking pin 42, so that the locking plate locking pin 42 can sink into the locking groove 33 embedded in the locking plate, and the key 7 can drive the inner sleeve body 20 to rotate through the locking plate set 30 to unlock.

As an alternative, more or fewer locking pieces may be provided according to the product requirement, and the structures of the locking pieces in the locking piece groups are different, that is, only the first driven side surface and the first height limiting top surface which are matched with the first tooth part of the key are provided on the first locking piece, and only the second driven side surface and the second height limiting top surface which are matched with the second tooth part of the key are provided on the second locking piece, so that the locking pieces are pushed, although the structures of the locking pieces are different, the functions similar to those of the previous embodiments can be basically realized, but the problem of inconvenient production caused by excessive locking piece patterns may exist.

In summary, the present invention focuses on:

1. the key is matched with the height limiting surface by arranging the side surfaces which are staggered with each other on the side wall of the locking plate, so that the key is simplified in structure, the key can be manufactured in a die casting or forging mode in a technological process, the pin turning processing is not needed, the key process is various, the quality of the key is improved, and the cost is reduced.

2. The teeth of the key matched in the mode can be high and low steps in width, so that the depth of grooves of the teeth is larger, the level is more, and the number of changeable numbers is more.

3. Through setting up locking plate positioning sleeve and supporting structure thereof, successfully solved the problem that idle key dialled the key difficulty, improved user's use experience.

The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, so any modifications, equivalents, improvements, etc. of the above embodiments according to the present invention are still within the scope of the present invention.

Claims

1. The lock comprises a lock core and a key, wherein the lock core comprises a fixed outer sleeve body, a rotatable inner sleeve body, a lock plate group and a lock plate clamping device, the inner sleeve body is rotatably arranged in the outer sleeve body, the lock plate group is rotatably arranged in the inner sleeve body, the lock plate group comprises a plurality of lock plates which are sequentially overlapped and arranged along the key insertion direction of the inner sleeve body, and a lock hole for a key to pass through is formed in the center of each lock plate; when an incorrect key is inserted, the locking plate clamping device is not limited to the locking plate group, the key can only drive the locking plate to idle in the inner sleeve body, when the correct key is inserted, the locking plate clamping device is limited to the locking plate group, and the key can drive the inner sleeve body to rotate through the locking plate group to realize unlocking, and the lock is characterized in that:

the shape and the size of the cross section of the key are matched with those of the lock hole, a plurality of tooth parts are arranged on the front and the back of the key along the insertion direction of the key, and each tooth part corresponds to each lock plate in a one-to-one mode; the first tooth part is correspondingly matched with the first locking plate, the first tooth part is provided with a first poking side surface which is used for propping against the first driven side surface of the first locking plate, and the first tooth part is provided with a first step surface which is matched with the first height limiting top surface of the first locking plate in height; the second tooth part is correspondingly matched with the second locking plate, the first tooth part is provided with a second poking side surface which is used for propping against the second driven side surface of the second locking plate, and the second tooth part is provided with a second step surface which is matched with the height of the second height limiting top surface of the second locking plate;

the lock comprises a lock plate accommodating hole, a key channel and a lock plate accommodating hole, and is characterized by further comprising an idle part matched with the free tail end of the key, wherein the end face of the idle part is provided with a non-circular caulking groove or a shaft hole matched with the shape of the free tail end of the key, the idle part is arranged in the lock plate accommodating hole, the caulking groove or the shaft hole is opposite to the key channel, the tail part of the key is correspondingly provided with a lug matched with the shape of the circular caulking groove or the shaft hole, and the idle part can be driven by the key to rotate relative to the lock plate accommodating hole;

the key has wide left and right sides and narrow upper and lower sides.

2. The lost motion lock cylinder lock according to claim 1, wherein: the locking holes of the locking plate groups are identical in structure, and at least a first driven side face, a first height limiting top face, a second driven side face and a second height limiting top face are arranged on the same side wall of the locking hole on the same locking plate.

3. The lost motion lock cylinder lock according to claim 1 or 2, wherein: the key is a flat body, and the tooth parts are vertical concave-convex steps on the upper side surface and/or the lower side surface which are narrower.

4. The lost motion lock cylinder lock according to claim 1 or 2, wherein: the lockhole has left and right sides wall, and the upper portion of right side wall is provided with first driven side, first limit for height top surface, second driven side, second limit for height top surface, third driven side and third limit for height top surface, and wherein, first driven side, second driven side and third driven side are in proper order from front to back dislocation set in the direction of rotation of locking plate, and first limit for height top surface, second limit for height top surface and third limit for height top surface are in order from high to low dislocation set along the radial of locking plate.

5. The lost motion lock cylinder lock as set forth in claim 4, wherein: the lower part of lockhole left side wall is provided with first driven side, first limit for high top surface, second driven side, second limit for high top surface, third driven side and third limit for high top surface, and wherein, first driven side, second driven side and third driven side are in proper order from front to back dislocation set in the direction of rotation of locking plate, and first limit for high top surface, second limit for high top surface and third limit for high top surface are in order from high to low dislocation set along the radial of locking plate.

6. The lost motion lock cylinder lock according to claim 1, wherein: the locking plate clamping device comprises an elastic thrust device, a locking plate clamping pin and a limiting groove arranged on the side wall of the inner sleeve body, wherein the limiting groove radially penetrates through the side wall of the inner sleeve body and axially extends; a clamping groove is formed in the outer ring surface of each locking plate; when the arrangement of the positions of the clamping grooves of all the locking plates is matched with the shape of the locking plate clamping pins, the locking plate clamping pins are pushed by the elastic pushing device to be embedded into the clamping grooves of the locking plates, and the locking plate group drives the inner sleeve body to rotate through the locking plate clamping pins so as to realize unlocking; when the clamping grooves of all the locking plates are not in a straight line, the locking plate clamping pins cannot be embedded into the clamping grooves.

7. The lost motion lock cylinder lock according to claim 1, wherein: the lock cylinder also comprises a lock plate positioning sleeve, the lock plate positioning sleeve comprises an end plate and a cylinder body, the end plate is integrally connected to one end of the cylinder body, a key hole is formed in the end plate, a key channel is formed in the axial direction of the cylinder body, the key hole is communicated with the key channel, through grooves for extending out of two sides of a key are formed in the key channel, and the lock plate group is sleeved outside the cylinder body; the key hole in the cylinder body runs through the cylinder body along the vertical direction, so that the cylinder body is divided into a left half cylinder and a right half cylinder, wherein the upper part of the left half cylinder is convexly extended with a convex strip, the upper part corresponding to the left side wall of each locking plate is provided with a guide pushing surface, and when unlocking, the convex strip is used for acting on the guide pushing surface of each locking plate.

8. The lost motion lock cylinder lock according to claim 7, wherein: the locking plate positioning sleeve is characterized in that a sleeve positioning groove is further formed in the locking plate positioning sleeve, a sleeve clamping device is arranged in the outer sleeve body correspondingly, the sleeve clamping device comprises a spring and a clamping block, the spring pushes the clamping block to abut against the locking plate positioning sleeve, when a key is unlocked and rotates in place, the clamping block is correspondingly embedded into the sleeve positioning groove, a gear is provided for the locking plate positioning sleeve, and the unlocking position of the locking plate positioning sleeve is maintained.

9. The lost motion lock cylinder lock according to claim 1, wherein: the lock cylinder is provided with an idle piece locating hole, the side wall of the idle piece is provided with an idle piece locating groove corresponding to the idle piece locating hole, the outer side of the idle piece locating hole is provided with an annular groove, the annular groove is communicated with the idle piece locating hole, an idle piece locating bead is arranged in the idle piece locating hole, an elastic clamp is arranged in the annular groove, the elastic clamp is blocked at the outer end of the idle piece locating bead, and when the idle piece locating hole is aligned with the idle piece locating groove, the inner end of the idle piece locating bead is abutted to the idle piece locating groove.