CN111608491A

CN111608491A - Idle lock head and mechanical lock

Info

Publication number: CN111608491A
Application number: CN202010361109.3A
Authority: CN
Inventors: 支崇铮
Original assignee: Wonly Security And Protection Technology Co ltd
Current assignee: Wonly Security And Protection Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-09-01

Abstract

The invention discloses an idle rotation lock head and a mechanical lock, wherein the lock head comprises a lock sleeve, a dial wheel, a lock cylinder and an idle rotation anti-theft secret key mechanism; a core cavity arranged along an axis is arranged in the lock sleeve, a wheel notch is formed in the lock sleeve, and the core cavity is divided into an outer side cavity and an inner side cavity by the wheel notch; the shifting wheel is rotatably arranged in the wheel notch around the axis and is provided with a through hole coaxial with the axis; the lock core is accommodated in the lock sleeve through a through hole on the thumb wheel and comprises an idle core, a locking core and a clutch transmission core, wherein the idle core is accommodated in an outer cavity and provided with a key hole; the lost motion theft prevention key mechanism has a locked state in which the lock cylinder is locked to the lock case and an unlocked state in which the lock cylinder is unlocked when the mating key is inserted. The idle rotation lock head has the advantages that the problem that the signal wire is distorted and wound is not easy to occur on the premise that the inner side and the outer side can independently act and the outer door lock has a key opening function.

Description

Idle lock head and mechanical lock

Technical Field

The invention relates to the technical field of locks, in particular to an idle-run lock head and a mechanical lock.

Background

For a common mechanical safety lock, the mechanical safety lock is upgraded into an intelligent lock without replacing a door lock in a door leaf, and the simplest mode is to replace only a lock head and a handle. The upgrading mode is economical, convenient and fast. However, this requires that all of the smart components be located in the lock and handle. Because of the limitation of the original door lock structure, the structure scale of the lock head is difficult to change greatly, and therefore, the space for arranging the intelligent components is mainly arranged in the handle. And because the information acquisition module of modes such as fingerprint, iris, facial recognition and password input among the intelligent components and parts must be set up in the outer handle, therefore it is the simplest mode to set up all intelligent components and parts in the outer handle. However, the disadvantage of this arrangement is that the outer handle is most vulnerable to damage, and once the outer handle is damaged, the door lock can be unlocked directly by using the electric driving mechanism, bypassing the information acquisition and identification module. The mode of solving such problem is with all other intelligent components and parts setting in the handle including except that information acquisition module, through the intelligent component in the signal line connection inside and outside handle that passes the tapered end. However, the typical inner and outer handles do not always rotate together during operation.

For example, chinese patent publication No. CN102704755A discloses a double-transmission unlocked shrapnel type idling lock head, which includes a lock body (i.e., a lock sleeve), an unlocking member (i.e., a thumb wheel) rotatably mounted on the lock sleeve, a rotating member (i.e., a lock cylinder) rotatably mounted in the lock sleeve outside the thumb wheel and mainly composed of an inner lock cylinder (i.e., an idling cylinder) and an unlocking cylinder (i.e., a locking cylinder), wherein a clutch assembly is disposed between the locking cylinder and the thumb wheel, a transmission cylinder fixedly connected with an inner handle is rotatably mounted in the lock sleeve inside the thumb wheel, and the transmission cylinder is fixedly connected with the thumb wheel. When the matched key is inserted into the idle core, the idle core is linked with the locking core, and meanwhile, the key supports against the clutch assembly, so that the locking core drives the shifting wheel to rotate through the clutch assembly, and the opening of the lock head is realized. According to the lock head structure, the lock core and the transmission core respectively occupy two sides of the thumb wheel, and the lock head can be unlocked by the inner handle without passing a secret key, so that the lock head and the transmission core cannot synchronously rotate. In particular, in the prior art idle lock cylinder, when the key is not turned on, the idle cylinder can idle relative to the lock cylinder, while the lock cylinder remains fixed relative to the lock cylinder, and the clutch mechanism therein needs to remain circumferentially fixed relative to the lock cylinder. Therefore, the problem that communication signal wires connecting the information acquisition module and other intelligent components are wound in work is solved.

To solve the problem that the communication signal line is easy to be wound, chinese patent publication No. CN109025531A discloses a lock core structure (i.e. a lock head) for an intelligent door lock, which comprises an outer handle assembly and an inner handle assembly, wherein the outer handle assembly is provided with an information acquisition module, the inner handle assembly comprises a first rotating part provided with a control module and a second rotating part sleeved outside the first rotating part, and the information acquisition module receives and acquires and sends user information to the control module; a first tubular shaft has one end connected to the outer handle assembly and the other end connected to the first rotatable member. The control module is electrically connected with the information acquisition module through a lead (namely a signal wire) which passes through the lumen of the first rotating shaft; the thumb wheel is fixed with a second rotating shaft (namely a rotating shaft), the rotating shaft is sleeved on the part of the first rotating shaft extending to the inner handle assembly, one end of the rotating shaft close to the inner handle is connected with a second rotating part, and the thumb wheel rotates relative to the shaft shell (namely a lock sleeve) to realize unlocking or locking; a clutch structure controlled by the control module is arranged between the first rotating shaft and the thumb wheel. Under the condition that the clutch structure is not in transmission connection, the inner handle assembly is rotated to drive the shifting wheel to rotate so as to complete unlocking driving; the control module receives unlocking information which is sent by the information acquisition module and is matched with preset information, the clutch structure is controlled to realize transmission connection, the outer handle is rotated to drive the first rotating shaft, the first rotating part and the second rotating part, and the dial wheel is further driven to rotate to complete unlocking driving; the lock head structure can avoid the problem that the signal wire is distorted and cracked.

However, the lock cylinder structure is provided with the first rotating shaft with the pipe cavity, the pipe cavity on the first rotating shaft occupies the position where the key hole is usually arranged, so that a secret key mechanism suitable for key opening is not suitable to be arranged between the outer lock shell and the first rotating shaft occupying the position of the lock cylinder, and therefore, the lock cylinder is not suitable for increasing the key opening function. Therefore, once one of the electronic components, such as intelligent identification, signal transmission or control module, is in trouble and the lock head cannot be opened, the door leaf must be opened by breaking.

Therefore, an idle lock head with a mechanical key unlocking function and without winding of a communication signal line between the information acquisition module connected to the outer handle and other intelligent components connected to the inner handle during working needs to be designed.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an idle lock head and a mechanical lock, so as to solve the problem that, in the prior art, after a signal line and other intelligent components are installed and upgraded into an intelligent lock, the signal line is easily distorted and cracked.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a lost motion lock cylinder comprising:

the lock sleeve is provided with an outer lock sleeve and an inner lock sleeve, an outer side cavity in the outer lock sleeve and an inner side cavity in the inner lock sleeve are both cylindrical, the cylindrical cavities are arranged along the same axis, and a wheel notch is formed between the outer lock sleeve and the inner lock sleeve;

the poking wheel is provided with a through hole taking the axis as an axis, is arranged in the wheel notch in a way of rotating around the axis and is suitable for driving a bolt mechanism in the door lock to realize unlocking or locking;

the lock cylinder penetrates through the through hole in the thumb wheel from the outer side cavity until the inner end of the inner side cavity is arranged in the lock sleeve;

the lock cylinder comprises an idle rotation core which is accommodated in the outer side cavity and provided with a key hole suitable for inserting a key, a locking core which is arranged between the idle rotation core and the dial wheel and axially positioned relative to the lock sleeve, and a clutch transmission core which is circumferentially fixed relative to the idle rotation core and axially slidably connected relative to the idle rotation core, wherein the clutch transmission core is driven by inserting and pulling out a matched key and axially slides between a transmission combination position which is circumferentially fixed relative to the dial wheel and the locking core and a transmission separation position which is released from circumferential fixation relative to the dial wheel and the locking core;

and an idle-run antitheft key mechanism having a locked state in which the lock cylinder is locked to the outer lock case when a mating key is not inserted into the key hole of the idle cylinder, and an unlocked state in which the lock between the outer lock case and the lock cylinder is released and the relative circumferential locking between the idle cylinder and the lock cylinder is achieved when the mating key is inserted into the key hole of the idle cylinder.

Furthermore, the idle rotation anti-theft key mechanism comprises a key groove formed on the inner wall of the outer side cavity, a core key groove formed on the periphery of the idle rotation core and inwards recessed corresponding to the key groove, and a locking slot formed on the locking core and corresponding to the key groove;

the locking key is partially accommodated in the sleeve key groove under the pushing force of the key assembly in the idle core, and the other part of the locking key is accommodated in the locking clamping groove, so that the relative circumferential locking of the lock sleeve and the locking core is realized; when the resisting thrust action of the key assembly is eliminated, the key assembly slides out of the sleeve key groove and enters the core key groove under the action of a biasing force towards the direction of the idle core so as to realize relative circumferential locking of the idle core and the locking core.

Furthermore, the secret key assembly comprises a plurality of blade grooves which are formed on the idle core, are sequentially arranged along the axial direction of the idle core and form an intersection angle with the axial direction, secret key blades are arranged in the blade grooves, and notches are formed in the secret key blades; the plurality of notches of each key blade under the biasing force are maintained in a staggered relationship to urge the locking key toward the locked condition and form a linear groove for sliding the locking key out of the set of keyways when a mating key is inserted into the keyway against the biasing force of each key blade.

Furthermore, the idle rotation anti-theft secret key mechanism also comprises an idle rotation key which is arranged in the core key groove in a radial sliding manner; when the locking key is in a locking state, the idle key is completely positioned in the core key groove and presses the locking key to be embedded into the sleeve key groove; when the locking key is in the unlocked state, the lost motion key slides into the linear groove formed by each notch to slide the locking key out of the sleeve keyway and into the core keyway.

Furthermore, the outer lock sleeve is provided with at least two biasing member mounting holes corresponding to the sleeve key slot positions and communicated with the sleeve key slot positions, and a key biasing mechanism for applying biasing force towards the direction of the idle core to the locking key is arranged in each biasing member mounting hole.

Further, the idle core and the clutch transmission core are fixed in the circumferential direction and can slide in the axial direction relative to each other through a convex claw structure capable of being embedded with each other.

Further, the lock core is provided with a central through hole which is coaxially arranged with the through hole of the thumb wheel, and the clutch transmission core is arranged in the through hole and the central through hole; the clutch transmission core and the thumb wheel are embedded and separated in a relatively fixed circumferential direction through a first separation embedding structure, the clutch transmission core and the locking core are embedded and separated in a relatively fixed circumferential direction through a second separation embedding structure, and the embedding and the separation of the second separation embedding structure are performed before the embedding and the separation of the first separation embedding structure or simultaneously.

Further, the first separation embedding structure comprises a first embedding protrusion arranged on the outer wall of the clutch transmission core and a first embedding groove arranged on the inner wall of the through hole of the thumb wheel; the second separation embedding structure comprises a first embedding bulge arranged on the outer wall of the clutch transmission core and a second embedding groove arranged on the inner wall of the central through hole of the locking core.

Further, the first fitting groove has a first fitting entrance facing the first fitting projection; the second fitting groove has a second fitting entrance facing the second fitting projection; in the process that the clutch transmission core moves from the transmission separation position to the transmission combination position, the time when the second embedding bulge enters the second embedding opening is not later than the time when the first embedding bulge enters the first embedding opening.

Further, the clutch drive core is biased against the idler core to tend to remain in the drive disengaged position.

Furthermore, the device is also provided with a tubular rotating shaft which is arranged in the inner side cavity and one end of which is in transmission connection with the thumb wheel; the lock core also comprises a linkage core which is arranged in a tube cavity of the rotating shaft and/or the through hole of the thumb wheel in a relatively axial fixed manner and is in transmission connection with the clutch transmission core; the biasing force on the clutch transmission core is applied by a clutch spring acting between the linkage core and the clutch transmission core.

Further, a buffer mechanism is arranged at one end, facing the idle core, of the clutch transmission core.

Furthermore, the buffer mechanism comprises a through cavity which is formed in the clutch transmission core and is axially through, and a convex ring is arranged on the inner wall of the through cavity; the guide rod is axially and slidably arranged in the through cavity and penetrates through the convex ring, and an annular boss is arranged on one side, close to the idle core, of the guide rod; a buffer spring sleeved on the guide rod is arranged between the convex ring and the annular boss.

Further, the biasing force of the clutch spring on the clutch transmission core acts on the convex ring; the elastic force of the buffer spring is larger than that of the clutch spring.

Furthermore, the thumb wheel is composed of a thumb wheel body and a plurality of sections of thumb wheel cushion blocks which are mutually clamped and connected to form a relative fixed structure in the axial direction and the circumferential direction, and a corresponding structure which can be embedded with the first embedding groove is also arranged on the thumb wheel cushion block.

Furthermore, a plurality of sections of transmission cushion blocks which are clamped and connected with the rotating shaft to form relative fixation in the axial direction and the circumferential direction are arranged on the rotating shaft.

Further, the linkage core comprises a transition core axially fixed with the thumb wheel and an extension core axially and circumferentially fixed relative to the transition core and located in the tube cavity of the rotating shaft.

Furthermore, a plurality of sections of extending cushion blocks which are clamped and connected with the extending core to be relatively fixed in the axial direction and the circumferential direction are arranged on the extending core.

Furthermore, the outer end of the idle core and the inner end of the linkage core are both provided with connecting terminal sockets for connecting signal wires; the linkage core is internally provided with a wiring cavity which is used for accommodating the signal wire and is suitable for the signal wire to be connected with the connecting terminal socket, and a wiring groove which is communicated with the wiring cavity and is suitable for the signal wire to be connected with the connecting terminal socket is formed in the peripheral side wall of the idle core.

On the other hand, the invention also provides a mechanical lock, which comprises a lock body and the idle-run lock head arranged on the lock body, wherein the idle-run lock head pushes the bolt mechanism on the lock body to extend or retract through the rotation of the thumb wheel.

The technical scheme of the invention has the following advantages:

1. the idle lock head provided by the invention has the advantages that the idle core of the lock cylinder is connected with the clutch transmission core which can be circumferentially fixed with the idle core and can axially slide relative to the idle core, and the clutch transmission core axially slides between a transmission combination position which is circumferentially fixed relative to the dial wheel and the locking core and a transmission separation position which is released from circumferential fixation relative to the dial wheel and the locking core. When the idle lock head is in a locked state, the clutch transmission core is in a transmission combination position, and the clutch transmission core, the dial wheel and the locking core are in a state of relatively rotating circumferentially; when the idling lock head is upgraded into the intelligent lock by installing the signal wire and other intelligent components, the signal wire is connected to the lock cylinder and can extend from one end of the lock cylinder to the other end, the signal wire can freely and synchronously rotate coaxially relative to other components along with the lock cylinder consisting of the idling core, the clutch transmission core and the like, and at the moment, no matter the idling core is rotated, an outer door handle fixed in the circumferential direction of the idling core is rotated, or the idling core is directly and powerfully opened, the thumb wheel cannot be driven to rotate, so that the safety and reliability of the idling lock head can be ensured; meanwhile, the shifting wheel can freely rotate coaxially and synchronously relative to other components such as the lock cylinder and the signal line under the drive of the inner door handle, the function of unlocking by using the inner door handle is realized, the unlocking action of the inner door handle cannot drive the signal line to rotate, and the problem of signal line distortion and winding generated after the intelligent lock is upgraded can be avoided. Similarly, after upgrading into the intelligent lock, the induction component outside the door lock, such as cipher key input, iris recognition, fingerprint recognition or face recognition, completes intelligent detection, and transmits the detected signal to the executing device arranged in the inner door handle via the signal line, and the executing device orders about the rotating shaft connected with the dial wheel transmission to rotate relative to the lock cylinder and the signal line, so as to drive the dial wheel to rotate to unlock the door lock, thereby realizing the intelligent unlocking function. When the intelligent unlocking is in failure, such as the signal wire is broken, the intelligent identification unit cannot normally identify and send a passing identification signal, or the execution device is damaged, and the intelligent unlocking device can be unlocked by the matching key, when the matching key is inserted into the key hole of the idle core, the front end of the matching key pushes the clutch transmission core to enable the clutch transmission core to move from a transmission combination position which is relatively fixed with the circumferential direction of the dial wheel and the locking core to a transmission separation position which is relatively fixed with the circumferential direction of the dial wheel and the locking core, and simultaneously the matching key is aligned with the key component in the idle anti-theft key mechanism, the idle anti-theft key mechanism converts the locking state of the locking core which is locked in the outer lock sleeve into the unlocking state which is unlocked between the outer lock sleeve and the locking core and realizes the relative circumferential locking of the idle core and the locking core, so that the idle core, the clutch transmission core, the locking core, the dial wheel and the signal wire can rotate along with the rotation of the matching key, the function that the outer door is unlocked by using a matched key is realized.

2. When the matched key is inserted into the key hole of the idle core, the matched key overcomes the biasing force applied to each key blade in the key assembly, so that notches on each key blade are arranged in a mutually staggered state to form a state of a linear groove, and the locking key can conveniently slide out of a sleeve key groove on the inner wall of the outer cavity and enter the sleeve key groove on the periphery of the idle core, so that the relative circumferential locking between the lock sleeve and the locking core is released, and the relative circumferential locking between the idle core and the locking core is realized; when the non-matching key is inserted into the key hole of the idle core, the front end of the non-matching key pushes against the clutch transmission core, so that the clutch transmission core moves from a transmission combination position which is circumferentially fixed relative to the shifting wheel and the locking core to a transmission separation position which is circumferentially fixed relative to the shifting wheel and the locking core, and meanwhile, as the secret keys of the non-matching key and the secret key blades cannot be correctly aligned, the notches on the secret key blades cannot be arranged into linear grooves, the idle key cannot slide down towards the center direction of the idle core, and the locking key is still positioned in the key groove on the outer lock sleeve, and at the moment, the locking core, the locking key and the outer lock sleeve are circumferentially non-rotatable connected. Therefore, the clutch transmission core which is connected with the locking core in a circumferential non-rotatable mode cannot rotate, the idle rotation core cannot rotate, namely, the key cannot be rotated to drive the shifting wheel to rotate due to the fact that the key is not matched, and the safety and reliability of the idle rotation lock head can be guaranteed.

3. The idle rotation key is arranged in the idle rotation groove, when the idle rotation anti-theft secret key mechanism is in a locking state, the projection profile of the idle rotation core in the axial direction, which corresponds to the key groove of the sleeve key groove, is circular, so that the part of the locking key, which corresponds to the idle rotation core, is completely embedded into the key groove of the sleeve key groove and cannot extend into the key groove at the periphery of the idle rotation core, the idle rotation core can freely rotate relative to the lock sleeve, and the function of idle rotation of the lock core is realized.

4. According to the idle lock head provided by the invention, at least two biasing part mounting holes and at least two corresponding key biasing mechanisms are arranged on the outer lock sleeve, so that at least two points on the locking key are acted by biasing force, the stability of the locking key in the process of moving from a locking state to an unlocking state can be improved, and the structural stability of the whole idle lock head is further improved.

5. According to the idle rotation lock head provided by the invention, the idle rotation core and the clutch transmission core are fixed circumferentially relative to each other and can slide axially relative to each other through the mutually-embedded convex claw structures, and the idle rotation lock head has the advantages of simple structure and high transmission stability.

6. According to the idle lock provided by the invention, the rotating shaft which is in transmission connection with the thumb wheel and is provided with the pipe cavity is arranged in the inner side cavity of the lock sleeve, so that an installation space can be provided for the linkage core in transmission connection with the clutch transmission core, the whole lock core and a signal wire which can be connected to the lock core can extend from one end of the outer lock sleeve to the other end, a signal acquisition device which is respectively connected with two ends of the signal wire and other intelligent components except the signal acquisition device are respectively arranged on two opposite sides of the lock, and the safety of the idle lock after being upgraded into the intelligent lock is improved.

7. According to the idle rotation lock head provided by the invention, the buffer spring sleeved on the guide rod is arranged between the convex ring in the clutch transmission core and the annular boss at one side of the guide rod close to the idle rotation core, the elastic force of the buffer spring is larger than that of the clutch spring, and the buffer spring can transmit the acting force of the front end of the key pushing against the guide rod to the clutch transmission core, so that the clutch transmission core is driven to move from the transmission separation position to the transmission combination position, and the buffer protection effect is realized between the front end of the key and the clutch transmission core.

8. The idle lock head provided by the invention has the advantages that the dial wheel cushion blocks which are relatively fixed with the dial wheel body in the axial direction and the circumferential direction are arranged on the dial wheel body, the transmission cushion blocks which are relatively fixed with the rotating shaft in the axial direction and the circumferential direction are arranged on the rotating shaft, the extension cushion blocks which are relatively fixed with the extending core in the axial direction and the circumferential direction and are axially fixed with the dial wheel are arranged on the extension core, the requirements of different door thicknesses on the overall length of the idle lock head can be met by increasing or reducing the number of the dial wheel cushion blocks, the transmission cushion blocks and the extension cushion blocks, the dial wheel cushion blocks, the transmission cushion blocks and the transition core only need to be designed once and produced by adopting a set of dies or tools, and the cost in the aspect of process. Meanwhile, stock preparation is not needed for each set of lock with the specification, so that the stock quantity and the corresponding mobile capital are reduced, and the stock cost is correspondingly reduced.

9. The idle lock head provided by the invention is characterized in that a connecting terminal socket for connecting a signal wire is respectively arranged at one end of an idle core close to an outer door and one end of a linkage core close to an inner door, a wiring cavity for accommodating the signal wire and suitable for connecting the signal wire with the connecting terminal socket is arranged in the linkage core, and a wiring groove which is communicated with the wiring cavity and suitable for connecting the signal wire with the connecting terminal socket is formed on the peripheral side wall of the idle core; the signal wire and the orderly wiring of the signal wire are conveniently installed on the lock core.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic half-sectional structure view of an idle lock head according to an embodiment of the present invention;

fig. 2 is a perspective view of a first face of an idle lock head provided in an embodiment of the present invention;

FIG. 3 is a perspective view of a second face of the lost motion lock head provided in an embodiment of the present invention;

FIG. 4 is an exploded view of the idle lock head provided in the embodiment of the present invention;

FIG. 5 is a schematic view of a connection structure of the clutch transmission core, the lock core and the thumb wheel according to an embodiment of the present invention, wherein a portion of the connection structure is cut away to show a first separable engaging structure and a second separable engaging structure;

fig. 6 is an exploded view of the clutch transmission core, the locking core and the thumb wheel in the embodiment of the invention.

Description of reference numerals: 1. an outer lock sleeve; 2. an inner lock sleeve; 3. connecting the beams; 31. a connecting screw; 4. an idle core; 41. a key sheet; 42. a idle key; 47. a connection terminal socket; 5. a clutch transmission core; 51. a guide bar; 52. a buffer spring; 53. a clutch spring; 501. a first fitting projection; 502. a second fitting projection; 6. a transition core; 7. an extended core; 71. extending the cushion block; 8. a locking core; 911. a first fitting groove; 801. a second fitting groove; 9. a thumb wheel; 91. a thumb wheel cushion block; 10. a rotating shaft; 101. a transmission cushion block; 11. a locking key; 12. steel balls; 13. and (5) pressing a spring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The idle lock head shown in figures 1-6 comprises a lock sleeve, a thumb wheel 9, a lock cylinder and an idle anti-theft secret key mechanism. Wherein, the core chamber that sets up along an axis is seted up to the inside of lock tube, and still the shaping has a round notch in the middle of the lock tube, and the lock tube is divided into outer lock tube 1 and interior lock tube 2 by the round notch, and wherein, one side part that the lock tube is close to the outer door handle outside the door after the door leaf is installed to outer lock tube 1 definition for the tapered end, and one side part that the lock tube is close to the interior door handle in the door after the door leaf is installed to interior lock tube 2 definition for the tapered end. The inside of outer lock sleeve 1 is equipped with both ends and link up and be columniform outside chamber, and the inside of interior lock sleeve 2 also is equipped with both ends and link up and be columniform inboard chamber, and outside chamber and inboard chamber set up along same axis. The thumb wheel 9 is rotatably arranged in the wheel notch around an axis and is provided with a through hole taking the axis as the axis, and the thumb wheel 9 is suitable for driving a bolt mechanism in the door lock to realize unlocking or locking. The lock core passes through the through hole on the thumb wheel 9 from the outer cavity to the inner end of the inner cavity and is arranged in the lock sleeve. The idle lock head can be upgraded into an intelligent lock by installing a signal wire and other intelligent components.

Specifically, the lock core comprises an idle core 4, a locking core 8 and a clutch transmission core 5 which are accommodated in an outer side cavity. The idle core 4 is provided with a key hole suitable for inserting a key, the locking core 8 is arranged between the idle core 4 and the thumb wheel 9 and is installed on the outer lock sleeve 1 in a relative axial positioning mode, and the clutch transmission core 5 and the idle core 4 are fixed in the circumferential direction and slide in the axial direction relative to each other through a mutually-embedded convex claw structure. The clutch transmission core 5 is driven by the insertion and extraction of the matching key and axially slides between a transmission combination position which realizes relative circumferential fixation with the thumb wheel 9 and the locking core 8 and a transmission separation position which releases the relative circumferential fixation between the thumb wheel 9 and the locking core 8; and the clutch transmission core 5 is biased against the direction toward the idle core 4 so as to tend to be held in the transmission disengaged position. The lost motion theft prevention key mechanism has a locked state in which the lock core 8 is locked to the outer lock sleeve 1 when the mating key is not inserted into the key hole of the idle core 4, and an unlocked state in which the lock between the outer lock sleeve 1 and the lock core 8 is released and the relative circumferential locking of the idle core 4 and the lock core 8 is achieved when the mating key is inserted into the key hole of the idle core 4.

When the idle lock head is in a locked state, the clutch transmission core 5 is in a transmission combination position, and the clutch transmission core 5, the dial wheel 9 and the locking core 8 are in a state of relatively rotating circumferentially; when the idling lock head is upgraded into an intelligent lock by installing a signal wire and other intelligent components, the signal wire is connected to the lock cylinder and can extend from one end of the lock cylinder to the other end, the signal wire can freely and synchronously rotate coaxially relative to other components along with the lock cylinder consisting of the idling cylinder 4 and the clutch transmission cylinder 5, and at the moment, no matter the idling cylinder 4 is rotated or an outer door handle fixed with the idling cylinder 4 in the circumferential direction is rotated or the idling cylinder 4 is directly and powerfully opened, the thumb wheel 9 cannot be driven to rotate, so that the safety and reliability of the idling lock head can be ensured; simultaneously, the dial wheel 9 can freely rotate coaxially and synchronously relative to other components such as the lock cylinder and the signal line under the drive of the inner door handle, the function of unlocking by using the inner door handle is realized, the unlocking action of the inner door handle cannot drive the signal line to rotate, and the problem of signal line distortion and winding generated after the intelligent lock is upgraded can be avoided.

Similarly, after the intelligent lock is formed by upgrading, the induction component positioned outside the door lock, such as a password key input mode, an iris recognition mode, a fingerprint recognition mode or a face recognition mode, completes intelligent detection, and transmits a signal passing through the detection to the execution device arranged in the inner door handle through a signal line, the execution device drives the rotating shaft 10 in transmission connection with the shifting wheel 9 to rotate relative to the lock cylinder and the signal line, and then drives the shifting wheel 9 to rotate so as to open the door lock, and the intelligent unlocking function is realized.

When the intelligent unlocking is failed, such as a signal line is broken, the intelligent identification unit cannot normally identify and send a passing identification signal, or an execution device is damaged, and the intelligent unlocking device can be unlocked by the matching key, when the matching key is inserted into a key hole of the idle core 4, the front end of the matching key pushes the clutch transmission core 5 to enable the clutch transmission core 5 to move from a transmission combination position which is relatively fixed with the circumferential direction of the dial wheel 9 and the locking core 8 to a transmission separation position which is relatively fixed with the circumferential direction of the dial wheel 9 and the locking core 8, and simultaneously the matching key is aligned with a key component in the idle anti-theft key mechanism, the idle anti-theft key mechanism converts the locking state of the locking core 8 locked on the outer lock sleeve 1 into the unlocking state which is unlocked between the outer lock sleeve 1 and the locking core 8 and realizes the relative circumferential locking of the idle core 4 and the locking core 8, so that the idle core 4 and the clutch transmission core 5 are unlocked, The locking core 8, the thumb wheel 9 and the signal wire can rotate along with the rotation of the matching key, so that the function of unlocking the outer door by using the matching key is realized.

In an unlocking state, when the matching key is pulled out of the key hole, the abutting acting force of the front end of the key on the clutch transmission core 5 disappears, the clutch transmission core 5 is pushed towards one side of the idle core 4 under the action of the biasing force in the direction of the idle core 4, the clutch transmission core 5 moves to a transmission separation position from a transmission combination position, the clamping connection which cannot move circumferentially relative to the clutch transmission core 5, the dial wheel 9 and the locking core 8 is released, and the idle anti-theft secret key mechanism is also restored to the locking state from the unlocking state after the matching key is pulled out.

When the unmatched key is inserted into the keyhole, the front end of the unmatched key abuts against the clutch transmission core 5, so that the clutch transmission core 5 moves from a transmission combination position, in which the clutch transmission core is circumferentially fixed relative to the dial wheel 9 and the locking core 8, to a transmission separation position, in which the clutch transmission core is circumferentially fixed relative to the dial wheel 9 and the locking core 8, however, because the unmatched key cannot be correctly aligned with the secret key in the secret key assembly in the idle core 4, the idle anti-theft secret key mechanism is still in a locking state, that is, the locking core 8 and the outer lock sleeve 1 still maintain circumferential non-rotatable connection, thus, the clutch transmission core 5, in which circumferential non-rotatable connection is established between the lock core 8, cannot rotate, the idle core 4 cannot rotate, that is, the unmatched key cannot rotate the dial wheel 9.

In this embodiment, a sleeve key groove is formed on the inner wall of the outer cavity of the outer lock sleeve 1, a core key groove is formed by inward recessing the periphery of the idle core 4 corresponding to the position of the sleeve key groove, and a locking slot corresponding to the position of the sleeve key groove is formed on the locking core 8. The idle rotation anti-theft key mechanism comprises a locking key 11 arranged in the key slot of the sleeve in a radial sliding mode and an idle rotation key 42 arranged in the key slot of the core in a radial sliding mode, wherein the locking key 11 is biased towards the idle core 4, and the idle rotation key 42 is biased by a key component in the idle core 4 to press the locking key 11 in the key slot of the sleeve. When the idle rotation anti-theft key mechanism is in a locked state, the locking key 11 is completely positioned in the key slot, one end of the locking key extends into the locking slot of the locking core 8, the idle rotation key 42 is positioned in the key slot, the projection profile of the idle rotation core 4 in the axial direction corresponding to the key slot of the key 4 is circular, so that the part of the locking key 11 corresponding to the idle rotation core 4 is completely prevented from being embedded into the key slot of the key. When the idle anti-theft key mechanism is in an unlocked state, the pushing force action of the key assembly in the idle core 4 on the idle key 42 disappears, the idle core 4 is in a circular shape with a notch corresponding to the key groove part in the axial direction, the notch is a space for the locking key 11 to completely slide out of the key groove under the action of biasing force towards the lock core, and the locking key 11 slides out of the key groove and enters the key groove under the action of biasing force towards the idle core 4 so as to realize the relative circumferential locking of the idle core 4 and the locking core 8.

In the present embodiment, the outer jacket 1 is provided with two biasing member mounting holes corresponding to and communicating with the jacket key grooves, and a key biasing mechanism for applying a biasing force to the lock key 11 in the direction toward the idle core 4 is provided in the biasing member mounting holes. The arrangement of the two biasing member mounting holes on the outer lock sleeve 1 and the two corresponding key biasing mechanisms on the two biasing member mounting holes enables two points on the locking key 11 to be acted by biasing force, so that the stability of the locking key 11 in the process of moving from a locking state to an unlocking state can be improved, and the structural stability of the whole idle lock head is further improved. Specifically, the key biasing mechanism includes a steel ball 12 provided near the idle core 4 in a biasing member mounting hole, and a pressing spring 13 that applies a biasing force to the steel ball 12 toward the idle core 4 between the outer lock sleeve 1 and the steel ball 12. In a preferred embodiment of this embodiment, the lock sleeve further comprises a coupling bar 3 fixed to the same side of the outer lock sleeve 1 and the inner lock sleeve 2 by a coupling screw 31, a mounting hole for the biasing member is formed at a position corresponding to a coupling hole of the coupling bar 3 through which the coupling screw 31 passes, and a screw thread adapted to be screwed and fixed by the coupling screw 31 is formed at an outer end of the mounting hole for the biasing member, and the pressing spring 13 acts between the steel ball 12 and the coupling screw 31.

In this embodiment, the key assembly includes a plurality of blade grooves formed on the idle core 4, the blade grooves being sequentially arranged along the axial direction of the idle core 4 and forming an angle with the axial direction, the blade grooves are all provided with key blades, and the key blades are provided with notches. When the matching key is inserted into the key hole of the idle core 4, the matching key overcomes the biasing force applied to each key blade in the key assembly, and the notches on each key blade are arranged in a mutually staggered state to form a state of linear grooves, so that the locking key 11 slides out of the sleeve key groove on the inner wall of the outer cavity and enters the sleeve key groove on the periphery of the idle core 4, thereby releasing the relative circumferential locking between the lock sleeve and the locking core 8 and realizing the relative circumferential locking between the idle core 4 and the locking core 8. When a non-matching key is inserted into the key hole of the idle core 4, since the non-matching key and the key of the key blade cannot be aligned correctly, the notches on the key blades 41 cannot be arranged into straight grooves, so that the idle key 42 cannot slide down toward the center of the idle core 4, the locking key 11 is kept in the key groove of the outer lock sleeve 1, and the locking core 8, the locking key 11 and the outer lock sleeve 1 are connected in a non-rotatable manner in the circumferential direction. Therefore, the clutch transmission core 5 which is connected with the locking core 8 in a non-rotatable mode in the circumferential direction cannot rotate, the idle core 4 cannot rotate, namely, the unmatched key cannot rotate the key to drive the dial wheel 9 to rotate, and the safety and reliability of the idle lock head can be guaranteed.

In the present embodiment, the lock core 8 includes a center through hole provided coaxially with the through hole of the dial 9, and the clutch transmission core 5 is provided in the through hole and the center through hole. The clutch transmission core 5 and the thumb wheel 9 are embedded and separated relatively and fixedly in the circumferential direction through a first separation embedding structure, and the clutch transmission core 5 and the locking core 8 are embedded and separated relatively and fixedly in the circumferential direction through a second separation embedding structure. When the clutch transmission core 5 moves under the action of the pushing force of the front end of the key, the second separated embedding structure is embedded before the first separated embedding structure or the two separated embedding structures are embedded simultaneously.

Specifically, the first separate embedding structure comprises a first embedding protrusion 501 arranged on the outer wall of the clutch transmission core 5 and a first embedding groove 911 arranged on the inner wall of a through hole of the thumb wheel 9; the second separate fitting structure includes a first fitting projection 501 provided on the outer wall of the clutch transmission core 5 and a second fitting recess 801 provided on the inner wall of the central through hole which the lock core 8 has. The first fitting groove 911 has a first fitting entrance facing the first fitting projection 501; the second fitting groove 801 has a second fitting opening facing the second fitting projection 502; in the process of moving the clutch transmission core 5 from the transmission release position to the transmission engagement position, the time when the second fitting projection 502 enters the second fitting opening is not later than the time when the first fitting projection 501 enters the first fitting opening.

In this embodiment, the inner cavity of the inner lock sleeve 2 accommodates a tubular rotation shaft 10 with one end fixedly connected with the thumb wheel 9, and the rotation shaft 10 is circumferentially fixed to the inner door handle, so that the thumb wheel 9 can be driven to rotate, and the function of unlocking the door is realized. In another embodiment, the rotating shaft 10 and the thumb wheel 9 may be in transmission connection through an engaging structure in which both the circumferential direction and the axial direction are engaged with each other, and the rotating shaft 10 and the thumb wheel 9 may be formed integrally without adjusting the thickness of the door.

In this embodiment, the lock cylinder further comprises a linkage core which is arranged in the lumen of the rotary shaft 10 and/or in the through hole of the thumb wheel 9 in a relatively axially fixed and relatively circumferentially sliding manner and is in driving connection with the clutch transmission core 5, and the biasing force on the clutch transmission core 5 is exerted by a clutch spring 53 acting between the linkage core and the clutch transmission core 5. Through set up the axis of rotation 10 that is connected and have the lumen with the 9 transmissions of thumb wheel in the inboard intracavity of lock tube, can provide installation space for the linkage core of being connected with the transmission of separation and reunion transmission core 5, the signal line of being convenient for whole lock core and joinable on the lock core can stretch to the other end of interior lock tube 2 from the one end of outer lock tube 1, thereby conveniently set up the signal acquisition device that the signal line both ends are connected respectively and other intelligent components and parts except that signal acquisition device in the relative both sides of tapered end respectively, improve the security behind the idle running tapered end upgrade intelligent lock.

In the present embodiment, a damper mechanism is provided at one end of the clutch transmission core 5 toward the idle core 4. Specifically, the buffer mechanism comprises a through cavity which is formed in the clutch transmission core 5 and is through along the axial direction of the clutch transmission core, and a convex ring is arranged on the inner wall of the through cavity; a guide rod 51 axially slidably mounted in the through cavity and penetrating through the convex ring, wherein an annular boss is arranged on one side of the guide rod 51 close to the idle core 4; a buffer spring 52 sleeved on the guide rod 51 is arranged between the convex ring and the annular boss. The biasing force of the clutch spring 53 to the clutch transmission core 5 acts on the convex ring, and the elastic force of the buffer spring 52 is larger than that of the clutch spring 53. The buffer spring 52 can transfer the acting force of the front end of the key against the push guide rod 51 to the clutch transmission core 5, so as to drive the clutch transmission core 5 to move from a transmission separation position to a transmission combination position, and play a role in buffer protection between the front end of the key and the clutch transmission core 5.

In this embodiment, the thumb wheel 9 is composed of a thumb wheel body and a plurality of sections of thumb wheel pads 91 which are mutually connected in a snap-fit manner and relatively fixed in the axial direction and the circumferential direction, and a corresponding structure capable of being engaged with the first engaging groove 911 is also arranged on the thumb wheel pads 91. The rotating shaft 10 is provided with a plurality of sections of transmission cushion blocks 101 which are clamped and connected to form a fixed structure in the axial direction and the circumferential direction. The linkage core comprises a transition core 6 axially fixed with the thumb wheel 9 and an extension core 7 axially and circumferentially fixed relative to the transition core 6 and positioned in a tube cavity of the rotating shaft 10; the extension core 7 is provided with a plurality of extension cushion blocks 71 which are clamped and connected with the extension core to be relatively fixed in the axial direction and the circumferential direction. Through increasing or reducing the quantity of thumb wheel cushion 91, transmission cushion 101 and extension cushion 71, can adapt to the requirement of different door thickness to the whole length of sky lock head, thumb wheel cushion 91, transmission cushion 101 and extension cushion 71 only need once design, adopt one set of mould or frock to produce moreover, cost in the aspect of can greatly reduced technology manufacturing. Meanwhile, stock preparation is not needed for each set of lock with the specification, so that the stock quantity and the corresponding mobile capital are reduced, and the stock cost is correspondingly reduced.

In the embodiment, the end of the idle core 4 facing the outside of the door and the end of the linkage core facing the inside of the door are both provided with a connection terminal socket 47 for connecting a signal line; a wiring cavity for accommodating a signal wire and adapted to the signal wire connection terminal socket 47 is provided in the interlocking core, and a wiring groove communicating with the wiring cavity and adapted to the signal wire connection terminal socket 47 is formed in the outer peripheral side wall of the idle core 4. The arrangement of the two connecting terminal sockets 47, the wiring cavity and the wiring groove facilitates the installation of the signal lines and the orderly wiring of the signal lines on the lock cylinder.

On the other hand, the invention also provides a mechanical lock, which comprises a lock body and the idle lock head arranged on the lock body, wherein the idle lock head pushes the bolt mechanism on the lock body to extend or retract through the rotation of the thumb wheel 9.

In summary, in the idle lock head and the mechanical lock provided by the embodiment of the present invention, the idle core 4 of the lock cylinder is connected to the clutch transmission core 5 that is circumferentially fixed to the idle core 4 and axially slides relative to the idle core, and the clutch transmission core 5 axially slides between a transmission engagement position where the clutch transmission core is circumferentially fixed relative to the dial 9 and the lock core 8 and a transmission disengagement position where the clutch transmission core is disengaged from the dial 9 and the lock core 8; meanwhile, a tubular rotating shaft 10 with one end in transmission connection with the thumb wheel 9 is accommodated in the inner lock sleeve 2, a linkage core which is in transmission connection with the clutch transmission core 5 and is relatively axially fixed and relatively circumferentially slides relative to the tube cavity of the rotating shaft 10 and/or the through hole of the thumb wheel 9 is arranged in the tube cavity of the rotating shaft 10, a wiring cavity which is communicated with the wiring cavity and is suitable for connecting the signal wire with the connecting terminal socket 47 is arranged in the outer peripheral wall of the idle core 4, the signal wire which can extend from one end of the lock core to the other end can be conveniently installed on the lock core, the signal wire can freely coaxially and synchronously rotate relative to other parts along with the lock core consisting of the idle core 4 and the clutch transmission core 5, and the unlocking action of the rotating shaft 10 in the inner lock sleeve 2 and the inner door handle circumferentially fixed on the rotating shaft 10 can not drive the signal wire to rotate, therefore, the problem of signal wire distortion and winding generated after the intelligent lock is upgraded by a mechanical lock is avoided on the premise that the inner side and the outer side of the idle lock head can independently act and the outer door lock has a key opening function.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A lost motion lock cylinder comprising:

the lock sleeve is provided with an outer lock sleeve (1) and an inner lock sleeve (2), an outer side cavity in the outer lock sleeve (1) and an inner side cavity in the inner lock sleeve (2) are both cylindrical, the cylindrical cavities are arranged along the same axis, and a wheel notch is formed between the outer lock sleeve (1) and the inner lock sleeve (2);

the poking wheel (9) is provided with a through hole taking the axis as the axis, is arranged in the wheel notch in a way of rotating around the axis and is suitable for driving a bolt mechanism in the door lock to realize unlocking or locking;

the lock cylinder penetrates through the through hole in the thumb wheel (9) from the outer side cavity until the inner end of the inner side cavity is arranged in the lock sleeve;

it is characterized in that the preparation method is characterized in that,

the lock core comprises an idle core (4) which is accommodated in the outer side cavity and provided with a key hole suitable for inserting a key, a locking core (8) which is arranged between the idle core (4) and the thumb wheel (9) and axially positioned relative to the lock sleeve, and a clutch transmission core (5) which is circumferentially fixed relative to the idle core (4) and axially slidably connected relative to the idle core, wherein the clutch transmission core (5) is driven by inserting and pulling out a matched key and axially slides between a transmission combination position which is circumferentially fixed relative to the thumb wheel (9) and the locking core (8) and a transmission separation position which is released from the circumferentially fixed relative between the thumb wheel (9) and the locking core (8);

and an idle anti-theft key mechanism having a locked state in which the lock cylinder (8) is locked to the outer lock case (1) when a mating key is not inserted into the key hole of the idle cylinder (4), and an unlocked state in which the lock between the outer lock case (1) and the lock cylinder (8) is released and the idle cylinder (4) and the lock cylinder (8) are locked in the circumferential direction when the mating key is inserted into the key hole of the idle cylinder (4).

2. The idle lock cylinder according to claim 1, characterized in that the idle anti-theft key mechanism comprises a key groove formed on the inner wall of the outer cavity, a key groove formed on the outer periphery of the idle core (4) and recessed inwards corresponding to the key groove, and a locking slot formed on the locking core (8) and corresponding to the key groove;

the locking key (11) is partially accommodated in the sleeve key groove under the pushing force of a key assembly in the idle core (4), and the other part of the locking key is accommodated in the locking clamping groove, so that the relative circumferential locking of the lock sleeve and the locking core (8) is realized; when the resisting and pushing force of the key assembly is eliminated, the key assembly slides out of the sleeve key groove and enters the core key groove under the action of a biasing force towards the direction of the idle core (4) so as to realize relative circumferential locking of the idle core (4) and the locking core (8).

3. The idle lock cylinder according to claim 2, characterized in that the key assembly comprises a plurality of blade grooves formed on the idle core (4), the blade grooves are sequentially arranged along the axial direction of the idle core (4) and form an angle with the axial direction, key blades are arranged in the blade grooves, and notches are arranged on the key blades; the plurality of notches of each key blade under the biasing force are maintained in a staggered manner to urge the locking key (11) into the locked condition and to form a linear groove for sliding the locking key (11) out of the keyway when a mating key is inserted into the keyway against the biasing force of each key blade.

4. The lost motion lock of claim 3, wherein the lost motion anti-theft key mechanism further comprises a lost motion key (42) slidably disposed radially within the core keyway; when the locking key (11) is in a locking state, the idle key (42) is completely positioned in the core key groove and presses the locking key (11) to be embedded into the sleeve key groove; when the locking key (11) is in the unlocked state, the lost motion key (42) slides into the linear groove formed by each of the notches to allow the locking key (11) to slide out of the sleeve keyway and into the core keyway.

5. The idle lock cylinder according to any one of claims 2 to 4, wherein the outer lock sleeve (1) is provided with at least two biasing member mounting holes corresponding to and communicating with the sleeve key grooves, and a key biasing mechanism is provided in the biasing member mounting holes for applying a biasing force to the lock key (11) in a direction toward the idle core (4).

6. The cylinder according to any one of claims 1 to 5, characterized in that the idle core (4) and the clutch transmission core (5) are fixed circumferentially and axially with respect to each other by means of a structure of mutually engageable fingers.

7. The idle lock according to any one of claims 1 to 6, characterized in that said locking core (8) has a central through hole arranged coaxially to said through hole of said tumbler (9), said clutch transmission core (5) being arranged in said through hole and in said central through hole; the clutch transmission core (5) and the dial wheel (9) are embedded and separated in a relatively fixed circumferential direction through a first separation embedding structure, the clutch transmission core (5) and the locking core (8) are embedded and separated in a relatively fixed circumferential direction through a second separation embedding structure, and the embedding and the separation of the second separation embedding structure are performed before the embedding and the separation of the first separation embedding structure or simultaneously.

8. The idle lock cylinder according to claim 7, characterized in that said first disengaging and engaging means comprise a first engaging projection (501) provided on the outer wall of said clutch transmission core (5) and a first engaging recess (911) provided on the inner wall of said through hole provided in said thumb wheel (9); the second separation embedding structure comprises a first embedding bulge (501) arranged on the outer wall of the clutch transmission core (5) and a second embedding groove (801) arranged on the inner wall of the central through hole of the locking core (8).

9. The idle lock cylinder according to claim 8, characterized in that said first engagement recess (911) has a first engagement mouth facing towards said first engagement projection (501); the second fitting groove (801) has a second fitting entrance facing the second fitting projection (502); in the process that the clutch transmission core (5) moves from the transmission separation position to the transmission combination position, the time when the second embedding bulge (502) enters the second embedding opening is not later than the time when the first embedding bulge (501) enters the first embedding opening.

10. The idle lock cylinder according to any one of claims 1 to 9, characterized in that the clutch transmission core (5) is subjected to a biasing force against the idle core (4) tending to remain in the transmission disengaged position.

11. The cylinder according to claim 10, characterized in that it has a tubular rotating shaft (10) disposed inside the internal cavity and having one end in driving connection with the thumb wheel (9); the lock core also comprises a linkage core which is arranged in a tube cavity of the rotating shaft (10) and/or the through hole of the thumb wheel (9) in a relatively axial fixed manner and is in transmission connection with the clutch transmission core (5); the biasing force on the clutch transmission core (5) is applied by a clutch spring (53) acting between the linkage core and the clutch transmission core (5).

12. The cylinder according to claim 11, characterized in that a damping means is provided at the end of the clutch-transmission core (5) facing the idle core (4).

13. The idle lock according to claim 12, characterized in that said buffer means comprise a through cavity formed in said clutch transmission core (5) and passing through it in the axial direction, said through cavity being provided on its inner wall with a convex ring; the guide rod (51) is axially and slidably arranged in the through cavity and penetrates through the convex ring, and an annular boss is arranged on one side, close to the idle core (4), of the guide rod (51); a buffer spring (52) sleeved on the guide rod (51) is arranged between the convex ring and the annular boss.

14. The idle lock cylinder according to claim 13, characterized in that the biasing force of the clutch spring (53) on the clutch transmission core (5) acts on the male ring; the elastic force of the buffer spring (52) is larger than the elastic force of the clutch spring (53).

15. The idle lock cylinder according to claim 8, characterized in that the thumb wheel (9) is composed of a thumb wheel body and a plurality of sections of thumb wheel pads (91) which are mutually clamped and connected to be relatively fixed in the axial direction and the circumferential direction, and corresponding structures which can be embedded with the first embedding grooves (911) are also arranged on the thumb wheel pads (91).

16. The cylinder lock according to any one of claims 11 to 15, characterized in that the shaft (10) is provided with several segments of transmission pads (101) which are snap-fitted into a fixed relationship axially and circumferentially.

17. The cylinder according to any one of claims 11 to 16, characterized in that the linkage core comprises a transition core (6) axially fixed to the thumb wheel (9) and an extension core (7) axially and circumferentially fixed with respect to the transition core (6) and located inside the lumen of the rotating shaft (10).

18. The cylinder according to claim 17, characterized in that the extension core (7) is provided with a plurality of segments of extension blocks (71) which are snap-fitted into a fixed relationship axially and circumferentially.

19. The cylinder according to any one of claims 11 to 18, characterized in that the outer end of the idle core (4) and the inner end of the linkage core are provided with connection terminal sockets (47) for connection of signal lines; the linkage core is internally provided with a wiring cavity which is used for accommodating the signal wire and is suitable for the signal wire to be connected with the connecting terminal socket (47), and a wiring groove which is communicated with the wiring cavity and is suitable for the signal wire to be connected with the connecting terminal socket (47) is formed on the peripheral side wall of the idle core (4).

20. A mechanical lock, characterized by comprising a lock body and a lost motion lock head according to any of claims 1-19 mounted on the lock body, the lost motion lock head being adapted to push the bolt mechanism on the lock body to extend or retract by rotation of the thumb wheel (9).