Idle lock and mechanical lock

Abstract

The invention discloses an idle lock and a mechanical lock, wherein the lock comprises a lock sleeve, a dial wheel, a lock core and an idle 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 cavity and an inner cavity by the wheel notch; the dial wheel is arranged in the wheel notch for rotation around the axis and has a through hole coaxial with the axis; the lock core is received in the lock sleeve through the through hole on the dial wheel, and comprises an idle core received in the outer cavity with a key hole, a locking core located between the idle core and the dial wheel and axially positioned relative to the lock sleeve, and a clutch transmission core circumferentially fixed relative to the idle core and sliding along the axis direction under the action of external force; the idle anti-theft secret key mechanism has a locking state in which the locking core is locked in the lock sleeve and an unlocking state in which the locking of the locking core is released when a matching key is inserted. This idle lock, under the premise of realizing that the inner and outer sides can act independently and the outer door lock has a key opening function, is not prone to the problem of twisting and winding of signal lines.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to an idle lock head and a mechanical lock. Background Art

[0002] For ordinary mechanical safety locks, the simplest way to upgrade them to smart locks without replacing the door locks in the door leaf is to just replace the lock and handle. This upgrade method is both economical, convenient and fast. However, this requires all smart components to be set in the lock and handle. Due to the limitations of the original door lock structure, the structural dimensions of the lock are difficult to change significantly, so the space for setting smart components is mainly in the handle. Since the information collection modules of fingerprint, iris, facial recognition and password input in the smart components must be set in the outer handle, it is the simplest way to set all smart components in the outer handle. However, the disadvantage of this setting is that the outer handle is most vulnerable to damage. Once the outer handle is damaged, the information collection and recognition modules can be bypassed and the electric drive mechanism can be used to open the door lock directly. The way to solve this problem is to set all other smart components except the information collection module in the inner handle, and connect the smart components in the inner and outer handles through the signal line passing through the lock. However, the usual inner and outer handles do not always rotate together during work.

[0003] For example, a Chinese patent with publication number CN102704755A discloses a double-transmission unlocking spring-type idle lock, including a lock body (i.e., lock sleeve), a lock-opening member (i.e., a dial wheel) rotatably mounted on the lock sleeve, a rotating component (i.e., lock cylinder) mainly composed of an inner lock core (i.e., an idle core) and a starter core (i.e., a locking core) rotatably mounted in the lock sleeve on the outer side of the dial wheel, wherein a clutch assembly is provided between the locking core and the dial wheel, and a transmission core fixedly connected to an inner handle is rotatably mounted in the lock sleeve on the inner side of the dial wheel, and the transmission core is fixedly connected to the dial wheel. When a matching key is inserted into the idle core, the idle core and the locking core are linked, and at the same time, the key pushes the clutch assembly, so that the locking core rotates with the dial wheel through the clutch assembly, thereby realizing the opening of the lock. In such a lock structure, since the lock core and the transmission core occupy the two sides of the dial wheel respectively, and the inner handle can open the lock without the secret key, it is impossible for the two to rotate synchronously. In particular, in the prior art idle lock, when there is no key to open it, the idle core can idle relative to the lock sleeve, while the locking core remains fixed relative to the lock sleeve, and the clutch mechanism needs to remain circumferentially fixed relative to the locking core. Therefore, the communication signal line connecting the information collection module and other intelligent components may get tangled during operation.

[0004] In view of the problem that the communication signal line is easy to get tangled, the Chinese patent with the publication number CN109025531A discloses a lock core structure (i.e., lock head) for a smart door lock, including an outer handle assembly and an inner handle assembly, wherein an information collection module is installed in the outer handle assembly, and the inner handle assembly includes a first rotating component installed with a control module and a second rotating component sleeved outside the first rotating component, wherein the information collection module receives and collects user information and sends it to the control module; one end of a tubular first rotating shaft is connected to the outer handle assembly, and the other end is connected to the first rotating component. The control module and the information collection module are electrically connected through a wire (i.e., a signal line) passing through the first rotating shaft lumen; a second rotating shaft (i.e., a rotating shaft) is fixed to the thumbwheel, and the rotating shaft is sleeved on the part of the first rotating shaft extending toward the inner handle assembly, and one end of the rotating shaft close to the inner handle is connected to the second rotating component, and the thumbwheel rotates relative to the shaft housing (i.e., the lock sleeve) to unlock or lock; a clutch structure controlled by the control module is provided between the first rotating shaft and the thumbwheel. When the clutch structure has no transmission connection, rotating the inner handle assembly can drive the thumbwheel to rotate to complete the unlocking drive; and when the control module receives the unlocking information sent by the information acquisition module that matches the preset information, the clutch structure is controlled to achieve the transmission connection. At this time, rotating the outer handle drives the first rotating shaft, the first rotating component, and the second rotating component, and then drives the thumbwheel to rotate to complete the unlocking drive; this lock head structure can avoid the problem of signal line twisting and cracking.

[0005] However, this lock structure is provided with a first rotating shaft with a tubular cavity, and the tubular cavity on the first rotating shaft occupies the position where the key hole is usually set, so that the outer lock shell and the first rotating shaft occupying the position of the lock core are no longer suitable for setting a secret key mechanism suitable for key opening, so this lock is not suitable for adding the function of key opening. Therefore, once one of the electronic components such as the intelligent recognition, signal transmission or control module has a problem and cannot open the lock, it is necessary to use the method of breaking and dismantling to open the door leaf.

[0006] Therefore, it is necessary to design an idle lock with a mechanical key opening function and in which the communication signal lines between the information acquisition module connected to the outer handle and other intelligent components connected to the inner handle will not be entangled during operation. Summary of the invention

[0007] In view of this, the purpose of the present invention is to provide an idle lock and a mechanical lock to solve the problem that the signal line of the idle lock with a key mechanism suitable for key opening in the prior art is easily twisted and cracked after the signal line and other intelligent components are installed to upgrade to a smart lock.

[0008] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0009] An idling lock, comprising:

[0010] The lock sleeve comprises an outer lock sleeve and an inner lock sleeve, wherein the outer cavity of the outer lock sleeve and the inner cavity of the inner lock sleeve are both cylindrical, and the cylinders are arranged along the same axis, and a wheel notch is arranged between the outer lock sleeve and the inner lock sleeve;

[0011] The thumbwheel has a through hole with the axis as the axis center and is rotatably arranged in the wheel groove around the axis, and is suitable for driving the bolt mechanism in the door lock to realize unlocking or locking action;

[0012] A lock core, which is arranged in the lock sleeve from the outer cavity through the through hole on the dial wheel to the inner end of the inner cavity;

[0013] The lock core comprises an idle core received in the outer cavity and having a key hole suitable for inserting a key, a locking core arranged between the idle core and the dial wheel and positioned axially relative to the lock sleeve, and a clutch transmission core circumferentially fixed relative to the idle core and connected to the axial sliding connection. The clutch transmission core is driven by the insertion and extraction of the matching key and axially slides between a transmission engagement position in which the clutch transmission core realizes relative circumferential fixation with the dial wheel and the locking core and a transmission separation position in which the clutch transmission core realizes relative circumferential fixation with the dial wheel and the locking core;

[0014] The idling anti-theft key mechanism has a locked state in which the locking core is locked to the outer lock sleeve when the matching key is not inserted into the keyhole of the idling core, and an unlocked state in which the lock between the outer lock sleeve and the locking core is released and the relative circumferential locking of the idling core and the locking core is achieved when the matching key is inserted into the keyhole of the idling core.

[0015] Furthermore, the idling anti-theft secret key mechanism includes a sleeve keyway formed on the inner wall of the outer cavity, a core keyway formed on the outer periphery of the idling core and recessed inwardly corresponding to the sleeve keyway, and a locking slot formed on the locking core and corresponding to the position of the sleeve keyway;

[0016] The locking key is partially accommodated in the sleeve keyway under the thrust of the key assembly in the idle core, and the other part is accommodated in the locking card slot to achieve relative circumferential locking of the lock sleeve and the locking core; when the thrust of the key assembly disappears, the locking key slides out of the sleeve keyway and enters the core keyway under the action of a biasing force toward the idle core to achieve relative circumferential locking of the idle core and the locking core.

[0017] Furthermore, the secret key assembly includes a plurality of blade grooves formed on the idle core, which are arranged in sequence along the axial direction of the idle core and form an angle with the axial direction, and key blades are arranged in each blade groove, and recesses are provided on the key blades; the plurality of recesses of each key blade remain staggered with each other under the action of bias pressure to push the locking key into the locked state, and when a matching key is inserted into the keyhole to overcome the bias pressure applied to each key blade, a linear groove is formed for allowing the locking key to slide out of the key slot.

[0018] Furthermore, the idling anti-theft key mechanism also includes an idling key radially slidingly arranged in the core keyway; when the locking key is in the locked state, the idling key is completely in the core keyway and presses the locking key to embed into the sleeve keyway; when the locking key is in the unlocked state, the idling key slides into the linear groove formed by each of the notches to allow the locking key to slide out of the sleeve keyway and enter the core keyway.

[0019] Furthermore, the outer lock sleeve is provided with at least two biasing member mounting holes corresponding to and communicating with the sleeve key slots, and a key biasing mechanism for applying a biasing force on the locking key toward the idle core is provided in the biasing member mounting holes.

[0020] Furthermore, the idle core and the clutch transmission core are fixed in the circumferential direction relative to each other and can slide in the axial direction relative to each other through mutually engageable pawl structures.

[0021] Furthermore, the locking core has a central through hole coaxially arranged with the through hole of the thumbwheel, and the clutch transmission core is arranged in the through hole and the central through hole; the clutch transmission core and the thumbwheel are relatively circumferentially fixedly engaged and separated by a first separation interlocking structure, and the clutch transmission core and the locking core are relatively circumferentially fixedly engaged and separated by a second separation interlocking structure, and the engagement and separation of the second separation interlocking structure precede the engagement and separation of the first separation interlocking structure, or the engagement and separation of the two are achieved simultaneously.

[0022] Furthermore, the first separation and interlocking structure includes a first interlocking protrusion arranged on the outer wall of the clutch transmission core and a first interlocking groove arranged on the inner wall of the through hole of the dial; the second separation and interlocking structure includes a second interlocking protrusion arranged on the outer wall of the clutch transmission core and a second interlocking groove arranged on the inner wall of the center through hole of the locking core.

[0023] Furthermore, the first engaging groove has a first embedding opening facing the first engaging protrusion; the second engaging groove has a second embedding opening facing the second embedding protrusion; during the movement of the clutch transmission core from the transmission disengagement position to the transmission engagement position, the time when the second engaging protrusion enters the second embedding opening is no later than the time when the first engaging protrusion enters the first embedding opening.

[0024] Further, the clutch transmission core is biased against the idle core so as to tend to remain in the transmission disengaged position.

[0025] Furthermore, it also has a tubular rotating shaft arranged in the inner cavity and one end of which is connected to the thumbwheel for transmission; the lock core also includes a linkage core which is arranged in the tubular cavity of the rotating shaft and / or the through hole of the thumbwheel and is connected to the clutch transmission core for transmission; the biasing force on the clutch transmission core is applied by a clutch spring acting between the linkage core and the clutch transmission core.

[0026] Furthermore, a buffer mechanism is provided at one end of the clutch transmission core facing the idle core.

[0027] Furthermore, the buffer mechanism includes a through cavity formed in the clutch transmission core and axially extending therethrough, a convex ring being provided on the inner wall of the through cavity; a guide rod being axially slidably installed in the through cavity and extending through the convex ring, an annular boss being provided on the side of the guide rod close to the idling core; and a buffer spring being sleeved on the guide rod being provided between the convex ring and the annular boss.

[0028] Furthermore, the biasing force of the clutch spring on the clutch transmission core acts on the convex ring; and the elastic force of the buffer spring is greater than the elastic force of the clutch spring.

[0029] Furthermore, the thumbwheel is composed of a thumbwheel body and a plurality of thumbwheel pads which are mutually engaged and connected to be relatively fixed in the axial and circumferential directions. The thumbwheel pad is also provided with a corresponding structure which can be engaged with the first engaging groove.

[0030] Furthermore, a plurality of transmission pads are arranged on the rotating shaft, and the rotating shaft is engaged and connected with the plurality of transmission pads, and the rotating shaft and the plurality of transmission pads are relatively fixed in the axial direction and the circumferential direction.

[0031] Furthermore, the linkage core includes a transition core axially fixed to the thumbwheel and an extension core axially and circumferentially fixed to the transition core and located in the lumen of the rotating shaft.

[0032] Furthermore, a plurality of extension pads are arranged on the extension core, the extension core is engaged and connected with the plurality of extension pads, and the extension core and the plurality of extension pads are relatively fixed in the axial direction and the circumferential direction.

[0033] Furthermore, a connection terminal socket for connecting the signal line is provided on the outer end of the idle core and the inner end of the linkage core; a wiring cavity for accommodating the signal line and suitable for the signal line to be connected to the connection terminal socket is provided in the linkage core, and a wiring groove is formed on the outer side wall of the idle core, which is connected with the wiring cavity and suitable for the signal line to be connected to the connection terminal socket.

[0034] On the other hand, the present invention further provides a mechanical lock, comprising a lock body and an idle lock head as described above mounted on the lock body, wherein the idle lock head pushes a lock tongue mechanism on the lock body to extend or retract through the rotation of the dial wheel.

[0035] The technical solution of the present invention has the following advantages:

[0036] 1. The idle lock provided by the present invention is connected to the idle core of the lock core, and the clutch transmission core can be fixed circumferentially with the idle core and slide axially relative to the idle core. The clutch transmission core slides axially between a transmission engagement position in which the clutch transmission core is relatively fixed circumferentially with the dial wheel and the lock core and a transmission disengagement position in which the clutch transmission core is relatively fixed circumferentially with the dial wheel and the lock core. When the idle lock is in a locked state, the clutch transmission core is in a transmission engagement position, and the clutch transmission core, the thumbwheel and the locking core are all in a state of relative circumferential rotation; when the idle lock is upgraded to a smart lock by installing signal lines and other intelligent components, the signal line is connected to the lock core and can extend from one end of the lock core to the other end, and the signal line can freely rotate coaxially and synchronously with the lock core composed of the idle core, the clutch transmission core, etc. relative to other components. At this time, whether it is rotating the idle core or rotating the outer door handle fixed circumferentially to the idle core, or directly forcefully opening the idle core, it cannot drive the thumbwheel to rotate, thereby ensuring the safety and reliability of the idle lock; at the same time, the thumbwheel can freely rotate coaxially and synchronously relative to the lock core, signal line and other components under the drive of the inner door handle, thereby realizing the function of unlocking using the inner door handle, and the unlocking action of the inner door handle will not drive the signal line to rotate, thereby avoiding the problem of signal line twisting and entanglement after upgrading to the smart lock. Similarly, after upgrading to a smart lock, the sensing components located on the outside of the door lock complete intelligent detection through methods such as password key input, iris recognition, fingerprint recognition or face recognition, and transmit the detected signal to the actuator arranged in the inner door handle via the signal line. The actuator drives the rotating shaft connected to the dial transmission to rotate relative to the lock core and the signal line, and then drives the dial to rotate to open the door lock, realizing the function of smart unlocking. When a fault occurs in the smart unlocking, such as a broken signal line, the intelligent identification unit cannot normally identify and send a pass identification signal, or the actuator is damaged, etc., it can be opened by a matching key. When the matching key is inserted into the keyhole of the idling core, the front end of the matching key pushes the clutch transmission core, causing the clutch transmission core to move from a transmission engagement position that is relatively circumferentially fixed with the dial wheel and the locking core to a transmission separation position that is relatively circumferentially fixed with the dial wheel and the locking core. At the same time, the matching key is aligned with the key component in the idling anti-theft key mechanism, and the idling anti-theft key mechanism is changed from a locked state in which the locking core is locked to an outer lock sleeve to an unlocked state in which the lock between the outer lock sleeve and the locking core is released and the relative circumferential locking of the idling core and the locking core is achieved. As a result, the idling core, clutch transmission core, locking core, dial wheel and signal line can all rotate with the rotation of the matching key, thereby realizing the function of unlocking the outer door using a matching key.

[0037] 2. The idle lock provided by the present invention, when the matching key is inserted into the keyhole of the idle core, the matching key overcomes the biasing force of each key blade in the secret key assembly, so that the notches on each key blade are arranged from a mutually misaligned state to form a straight groove state, so that the locking key slides out of the sleeve key groove on the inner wall of the outer cavity and enters the sleeve key groove on the outer periphery of the idle core, thereby releasing the relative circumferential locking between the lock sleeve and the locking core and realizing the relative circumferential locking between the idle core and the locking core; when the non-matching key is inserted into the keyhole of the idle core, the non-matching key The front end of the key pushes against the clutch transmission core, causing the clutch transmission core to move from a transmission engagement position that is relatively circumferentially fixed with the dial wheel and the locking core to a transmission separation position that is relatively circumferentially fixed with the dial wheel and the locking core. At the same time, since the mismatched key and the secret key blade cannot be correctly aligned, the notches on each secret key leaf cannot be arranged into a straight groove, so that the idle key cannot slide toward the center of the idle core, and the locking key remains in the keyway on the outer lock sleeve. At this time, the locking core, the locking key and the outer lock sleeve maintain a circumferentially non-rotatable connection. As a result, the clutch transmission core that is circumferentially non-rotatably connected to the locking core cannot rotate, so the idle core cannot rotate either, that is, the mismatched key cannot realize the turning key to drive the dial wheel to rotate, which can ensure the safety and reliability of this idle lock.

[0038] 3. The idle lock provided by the present invention has an idle key arranged in the idle groove. When the idle anti-theft key mechanism is in a locked state, the axial projection contour of the idle core corresponding to the sleeve key groove is circular, so as to keep the part of the locking key corresponding to the idle core completely embedded in the sleeve key groove without extending into the core key groove on the outer periphery of the idle core, so that the idle core can rotate freely relative to the lock sleeve, thereby realizing the function of the lock core being able to idle.

[0039] 4. The idle lock provided by the present invention has at least two biasing member mounting holes on the outer lock sleeve and at least two corresponding key biasing mechanisms thereon, so that at least two points on the locking key are subjected to biasing force, which can improve the stability of the locking key in the process of moving from a locked state to an unlocked state, thereby improving the structural stability of the entire idle lock.

[0040] 5. The idle lock provided by the present invention has an idle core and a clutch transmission core that are relatively fixed in the circumferential direction and can slide in the axial direction relative to each other through a mutually engageable pawl structure, which has the advantages of simple structure and high transmission stability.

[0041] 6. The idle lock provided by the present invention can provide an installation space for a linkage core that is transmission-connected to the clutch transmission core by arranging a rotating shaft with a tubular cavity that is transmission-connected to the dial wheel in the inner cavity of the lock sleeve, so that the entire lock core and the signal line that can be connected to the lock core can extend from one end of the outer lock sleeve to the other end, thereby facilitating the signal acquisition devices connected to the two ends of the signal line and other intelligent components except the signal acquisition device to be respectively arranged on opposite sides of the lock, thereby improving the safety of the idle lock after being upgraded to a smart lock.

[0042] 7. The idle lock provided by the present invention has a buffer spring sleeved on the guide rod between the convex ring in the clutch transmission core and the annular boss on the guide rod close to the idle core, and the elastic force of the buffer spring is greater than the elastic force of the clutch spring. The buffer spring can transmit the force of the front end of the key pushing the guide rod to the clutch transmission core, thereby driving the clutch transmission core to move from the transmission disengagement position to the transmission engagement position, and plays a buffering and protective role between the front end of the key and the clutch transmission core.

[0043] 8. The idle lock provided by the present invention has a thumbwheel pad fixed relative to the thumbwheel body in both the axial and circumferential directions, a transmission pad fixed relative to the thumbwheel body in both the axial and circumferential directions, and an extension pad fixed relative to the thumbwheel body in both the axial and circumferential directions on the rotating shaft. The extension core has an extension pad fixed relative to the thumbwheel body in both the axial and circumferential directions and fixed relative to the thumbwheel body in both the axial and circumferential directions. By increasing or decreasing the number of thumbwheel pads, transmission pads, and extension pads, the requirements for the overall length of the idle lock for different door thicknesses can be met. Moreover, the thumbwheel pads, transmission pads, and transition cores only need to be designed once and produced using a set of molds or tooling, which can greatly reduce the cost of process manufacturing. At the same time, there is no need to prepare materials for each set of locks of different specifications, which also reduces inventory and corresponding working capital, and correspondingly reduces inventory costs.

[0044] 9. The idle lock provided by the present invention has connection terminal sockets for connecting signal lines respectively arranged on one end of the idle core close to the outer door and on one end of the linkage core close to the inner door, a wiring cavity for accommodating the signal line and suitable for connecting the signal line to the connection terminal socket is arranged in the linkage core, and a wiring groove connected with the wiring cavity and suitable for connecting the signal line to the connection terminal socket is formed on the outer peripheral side wall of the idle core; the installation of the signal line on the lock core and the orderly wiring of the signal line are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic diagram of a half-section structure of an idle lock provided by an embodiment of the present invention;

[0047] Figure 2 A three-dimensional diagram of the first side of an idle lock provided by an embodiment of the present invention;

[0048] Figure 3 A three-dimensional view of the second side of the idle lock provided by an embodiment of the present invention;

[0049] Figure 4 An exploded view of an idle lock provided by an embodiment of the present invention;

[0050] Figure 5 Schematic diagram of the connection structure of the clutch transmission core, the locking core and the thumbwheel in the embodiment of the present invention, wherein a part is cut away to show the first separation interlocking structure and the second separation interlocking structure;

[0051] Figure 6 It is a schematic diagram of the exploded structure of the clutch transmission core, the locking core and the thumbwheel in the embodiment of the present invention.

[0052] Explanation of the accompanying drawings: 1. Outer locking sleeve; 2. Inner locking sleeve; 3. Connecting beam; 31. Connecting screw; 4. Idle core; 41. Secret key page; 42. Idle key; 47. Connecting terminal socket; 5. Clutch transmission core; 51. Guide rod; 52. Buffer spring; 53. Clutch spring; 501. First interlocking protrusion; 502. Second interlocking protrusion; 6. Transition core; 7. Extension core; 71. Extension pad; 8. Locking core; 911. First interlocking groove; 801. Second interlocking groove; 9. Drag wheel; 91. Drag wheel pad; 10. Rotating shaft; 101. Transmission pad; 11. Locking key; 12. Steel ball; 13. Compression spring. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0057] like Figure 1 -6 shows an idle lock head, comprising a lock sleeve, a thumbwheel 9, a lock core and an idle anti-theft secret key mechanism. The lock sleeve has a core cavity arranged along an axis, and a wheel notch is formed in the middle of the lock sleeve. The lock sleeve is divided into an outer lock sleeve 1 and an inner lock sleeve 2 by the wheel notch, wherein the outer lock sleeve 1 is defined as the side part of the lock sleeve near the outer door handle outside the door after the lock head is installed on the door leaf, and the inner lock sleeve 2 is defined as the side part of the lock sleeve near the inner door handle inside the door after the lock head is installed on the door leaf. The outer lock sleeve 1 has an outer cavity with two ends through and cylindrical, and the inner lock sleeve 2 also has an inner cavity with two ends through and cylindrical, and the outer cavity and the inner cavity are arranged along the same axis. The thumbwheel 9 is arranged in the wheel notch to rotate around the axis, and has a through hole with the axis as the axis center. The thumbwheel 9 is suitable for driving the bolt mechanism in the door lock to realize unlocking or locking. The lock core is arranged in the lock sleeve from the outer cavity through the through hole on the thumbwheel 9 to the inner end of the inner cavity. The idle lock can be upgraded to a smart lock by installing signal cables and other smart components.

[0058] Specifically, the lock core includes an idle core 4, a locking core 8 and a clutch transmission core 5 accommodated in an outer cavity. The idle core 4 has a keyhole suitable for key insertion, the locking core 8 is arranged between the idle core 4 and the dial wheel 9 and is relatively axially positioned and installed on the outer lock sleeve 1, and the clutch transmission core 5 and the idle core 4 are relatively circumferentially fixed and relatively axially slidable by means of a pawl structure that can be engaged with each other. The clutch transmission core 5 is driven by the insertion and removal of the matching key and slides axially between a transmission engagement position that realizes relative circumferential fixation with the dial wheel 9 and the locking core 8 and a transmission separation position that releases the relative circumferential fixation with the dial wheel 9 and the locking core 8; and the clutch transmission core 5 is subjected to a biasing force against the idle core 4 so as to tend to remain in the transmission separation position. The idling anti-theft key mechanism has a locked state in which the locking core 8 is locked to the outer lock sleeve 1 when the matching key is not inserted into the keyhole of the idling core 4, and an unlocked state in which the lock between the outer lock sleeve 1 and the locking core 8 is released and the relative circumferential locking of the idling core 4 and the locking core 8 is achieved when the matching key is inserted into the keyhole of the idling core 4.

[0059] When the idle lock is in a locked state, the clutch transmission core 5 is in a transmission engagement position, and the clutch transmission core 5, the thumbwheel 9 and the lock core 8 are all in a state of relative circumferential rotation; when the idle lock is upgraded to a smart lock by installing signal lines and other intelligent components, the signal line is connected to the lock core and can extend from one end of the lock core to the other end, and the signal line can be freely coaxially and synchronously rotated with the lock core composed of the idle core 4 and the clutch transmission core 5 relative to other components. At this time, whether it is rotating the idle core 4 or rotating the outer door handle fixed circumferentially to the idle core 4, or directly forcing the idle core 4 to open, it cannot drive the thumbwheel 9 to rotate, which can ensure the safety and reliability of the idle lock; at the same time, the thumbwheel 9 can be freely coaxially and synchronously rotated relative to the lock core, signal line and other components under the drive of the inner door handle, realizing the function of unlocking using the inner door handle, and the unlocking action of the inner door handle will not drive the signal line to rotate, which can avoid the problem of signal line twisting and entanglement caused by upgrading to a smart lock.

[0060] Similarly, after upgrading to a smart lock, the sensing components located on the outside of the door lock complete intelligent detection through methods such as password key input, iris recognition, fingerprint recognition or face recognition, and transmit the detected signal to the actuator arranged in the inner door handle via the signal line. The actuator drives the rotating shaft 10 connected to the dial wheel 9 to rotate relative to the lock core and the signal line, thereby driving the dial wheel 9 to rotate to open the door lock, realizing the function of smart unlocking.

[0061] When a fault occurs in the smart unlocking, such as a broken signal line, the intelligent identification unit cannot normally identify and send a passing identification signal, or the actuator is damaged, etc., it can be opened by a matching key. When the matching key is inserted into the keyhole of the idling core 4, the front end of the matching key pushes the clutch transmission core 5, so that the clutch transmission core 5 moves from a transmission engagement position relatively circumferentially fixed with the dial wheel 9 and the locking core 8 to a transmission separation position relatively circumferentially fixed with the dial wheel 9 and the locking core 8. At the same time, the matching key is aligned with the key component in the idling anti-theft key mechanism, and the idling anti-theft key mechanism changes from a locked state in which the locking core 8 is locked in the outer lock sleeve 1 to an unlocked state in which the lock between the outer lock sleeve 1 and the locking core 8 is released and the relative circumferential locking of the idling core 4 and the locking core 8 is realized, so that the idling core 4, the clutch transmission core 5, the locking core 8, the dial wheel 9 and the signal line can all rotate with the rotation of the matching key, thereby realizing the function of unlocking the outer door using the matching key.

[0062] When the matching key is pulled out of the keyhole, the pushing force of the front end of the key on the clutch transmission core 5 disappears, and the clutch transmission core 5 is pushed toward the side of the idling core 4 under the action of the biasing force in the direction of the idling core 4, and moves from the transmission engagement position to the transmission disengagement position, thereby releasing the engagement connection between the clutch transmission core 5 and the dial wheel 9 and the locking core 8 that prevents relative circumferential movement. The idling anti-theft key mechanism also recovers from the unlocked state to the locked state after the matching key is pulled out.

[0063] When the non-matching key is inserted into the keyhole, the front end of the non-matching key presses against the clutch transmission core 5, causing the clutch transmission core 5 to move from a transmission engagement position relatively circumferentially fixed with the dial wheel 9 and the locking core 8 to a transmission separation position relatively circumferentially fixed with the dial wheel 9 and the locking core 8. However, since the non-matching key and the key in the secret key assembly in the idling core 4 cannot be correctly aligned, the idling anti-theft key mechanism is still in a locked state, that is, the locking core 8 and the outer lock sleeve 1 still maintain a circumferentially non-rotatable connection. As a result, the clutch transmission core 5 that is circumferentially non-rotatably connected to the locking core 8 cannot rotate, so the idling core 4 cannot rotate either, that is, the non-matching key cannot realize the turning key to drive the dial wheel 9 to rotate.

[0064] In this embodiment, a sleeve keyway is formed on the inner wall of the outer cavity of the outer lock sleeve 1, a core keyway is formed inwardly at the outer periphery of the idle core 4 corresponding to the sleeve keyway, and a locking card slot corresponding to the sleeve keyway is formed on the locking core 8. The idle anti-theft secret key mechanism includes a locking key 11 radially slidably arranged in the sleeve keyway and an idle key 42 radially slidably arranged in the core keyway, the locking key 11 is subjected to a biasing force toward the idle core 4, and the idle key 42 is subjected to the thrust force of the secret key assembly in the idle core 4 to press the locking key 11 into the sleeve keyway. When the idling anti-theft key mechanism is in a locked state, the locking key 11 is completely in the sleeve keyway and one end extends into the locking slot of the locking core 8, the idling key 42 is located in the core keyway, and the axial projection contour of the idling core 4 corresponding to the sleeve keyway is circular, so as to keep the part of the locking key 11 corresponding to the idling core 4 completely embedded in the sleeve keyway without extending into the core keyway on the periphery of the idling core 4, so that the idling core 4 can rotate freely relative to the lock sleeve, thereby realizing the idling function of the idling core 4, and the locking core 8 and the outer lock sleeve 1 remain relatively circumferentially locked. When the idling anti-theft key mechanism is in the unlocking state, the thrust effect of the key assembly in the idling core 4 on the idling key 42 disappears, and the axial projection of the idling core 4 corresponding to the key slot is a circle with a notch, which is the space for the locking key 11 to completely slide out of the key slot under the action of the biasing force toward the lock core. The locking key 11 slides out of the key slot and enters the core key slot under the action of the biasing force toward the idling core 4 to realize the relative circumferential locking of the idling core 4 and the locking core 8.

[0065] In this embodiment, two biasing member mounting holes corresponding to and communicating with the key slots are provided on the outer lock sleeve 1, and a key biasing mechanism for applying a biasing force to the locking key 11 in the direction of the idle core 4 is provided in the biasing member mounting holes. The two biasing member mounting holes on the outer lock sleeve 1 and the two corresponding key biasing mechanisms thereon are provided so that two points on the locking key 11 are subjected to the biasing force, which can improve the stability of the locking key 11 during the movement from the locked state to the unlocked state, thereby improving the structural stability of the entire idle lock. Specifically, the key biasing mechanism includes a steel ball 12 provided in the biasing member mounting hole near the idle core 4 and a compression spring 13 between the outer lock sleeve 1 and the steel ball 12 for applying a biasing force to the steel ball 12 in the direction of the idle core 4. In a preferred implementation of the present embodiment, the locking sleeve further comprises a connecting beam 3 fixed to the same side of the outer locking sleeve 1 and the inner locking sleeve 2 by a connecting screw 31, a biasing member mounting hole is formed at a position corresponding to the connecting hole of the connecting beam 3 for the connecting screw 31 to pass through, and a thread suitable for tightening and fixing the connecting screw 31 is formed at the outer end of the biasing member mounting hole, and at this time, the compression spring 13 acts between the steel ball 12 and the connecting screw 31.

[0066] In this embodiment, the secret key assembly includes a plurality of blade grooves formed on the idle core 4, which are arranged in sequence along the axial direction of the idle core 4 and form an angle with the axial direction, and key blades are arranged in each blade groove, and notches are provided on the key blades. When the matching key is inserted into the keyhole of the idle core 4, the matching key overcomes the biasing force of each key blade in the secret key assembly, so that the notches on each key blade are arranged from a mutually misaligned state to form a state of a linear groove, 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 outer 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 the non-matching key is inserted into the keyhole of the idle core 4, since the non-matching key and the secret key of the secret key blade cannot be correctly aligned, the notches on the secret key leafs 41 cannot be arranged into a straight groove, so that the idle key 42 cannot slide toward the center of the idle core 4, and the lock key 11 is still in the keyway on the outer lock sleeve 1. At this time, the lock core 8, the lock key 11 and the outer lock sleeve 1 maintain a circumferential non-rotatable connection. As a result, the clutch transmission core 5 that is circumferentially non-rotatably connected with the lock core 8 cannot rotate, so the idle core 4 cannot rotate either, that is, the non-matching key cannot realize the rotation of the key to drive the dial wheel 9 to rotate, which can ensure the safety and reliability of this idle lock.

[0067] In this embodiment, the locking core 8 has a central through hole coaxially arranged with the through hole of the dial wheel 9, and the clutch transmission core 5 is arranged in the through hole and the central through hole. The clutch transmission core 5 and the dial wheel 9 are relatively circumferentially fixedly engaged and separated by a first separation interlocking structure, and the clutch transmission core 5 and the locking core 8 are relatively circumferentially fixedly engaged and separated by a second separation interlocking structure. When the clutch transmission core 5 moves under the thrust of the front end of the key, the engagement of the second separation interlocking structure precedes the engagement of the first separation interlocking structure, or both are engaged at the same time.

[0068] Specifically, the first separation and interlocking structure includes a first interlocking protrusion 501 provided on the outer wall of the clutch transmission core 5 and a first interlocking groove 911 provided on the inner wall of the through hole of the dial wheel 9; the second separation and interlocking structure includes a second interlocking protrusion 502 provided on the outer wall of the clutch transmission core 5 and a second interlocking groove 801 provided on the inner wall of the central through hole of the locking core 8. The first interlocking groove 911 has a first insertion opening facing the first interlocking protrusion 501; the second interlocking groove 801 has a second insertion opening facing the second interlocking protrusion 502; during the movement of the clutch transmission core 5 from the transmission separation position to the transmission engagement position, the time when the second interlocking protrusion 502 enters the second insertion opening is no later than the time when the first interlocking protrusion 501 enters the first insertion opening.

[0069] In this embodiment, the inner cavity of the inner lock sleeve 2 contains a tubular rotating shaft 10, one end of which is fixedly connected to the thumbwheel 9. The inner door handle circumferentially fixed to the rotating shaft 10 can be rotated to drive the thumbwheel 9 to rotate, thereby realizing the function of unlocking the door. In other embodiments, the rotating shaft 10 and the thumbwheel 9 can also be connected to each other through a snap-fit ​​structure that is mutually engaged in both the circumferential and axial directions. In the case where the thickness of the door leaf does not need to be adjusted, the rotating shaft 10 and the thumbwheel 9 can also be an integrally formed structure.

[0070] In this embodiment, the lock core further includes a linkage core that is fixed in the relative axial direction and relatively slidably arranged in the tubular cavity of the rotating shaft 10 and / or the through hole of the thumbwheel 9 and is transmission-connected to the clutch transmission core 5. The biasing force on the clutch transmission core 5 is applied by the clutch spring 53 acting between the linkage core and the clutch transmission core 5. By arranging the rotating shaft 10 that is transmission-connected to the thumbwheel 9 and has a tubular cavity in the inner cavity of the lock sleeve, an installation space can be provided for the linkage core that is transmission-connected to the clutch transmission core 5, so that the entire lock core and the signal line that can be connected to the lock core can extend from one end of the outer lock sleeve 1 to the other end of the inner lock sleeve 2, so that it is convenient to arrange the signal acquisition device connected to both ends of the signal line and other intelligent components other than the signal acquisition device on the opposite sides of the lock head, respectively, to improve the safety of the idle lock head after upgrading to a smart lock.

[0071] In this embodiment, a buffer mechanism is provided at one end of the clutch transmission core 5 facing the idle core 4. Specifically, the buffer mechanism includes a through cavity formed in the clutch transmission core 5 and penetrating along the axial direction thereof, a convex ring is provided on the inner wall of the through cavity; a guide rod 51 axially slidably installed in the through cavity and penetrating the convex ring, a ring boss is provided on the side of the guide rod 51 close to the idle core 4; a buffer spring 52 sleeved on the guide rod 51 is provided between the convex ring and the ring boss. The biasing force of the clutch spring 53 on the clutch transmission core 5 acts on the convex ring, and the elastic force of the buffer spring 52 is greater than the elastic force of the clutch spring 53. The buffer spring 52 can transmit the force of the front end of the key pushing the guide rod 51 to the clutch transmission core 5, thereby driving the clutch transmission core 5 to move from the transmission separation position to the transmission engagement position, and plays a role of buffer protection between the front end of the key and the clutch transmission core 5.

[0072] In this embodiment, the thumbwheel 9 is composed of a thumbwheel body and a plurality of thumbwheel pads 91 that are mutually engaged and connected to be relatively fixed in the axial and circumferential directions. A corresponding structure that can be engaged with the first engaging groove 911 is also provided on the thumbwheel pad 91. A plurality of transmission pads 101 are provided on the rotating shaft 10. The rotating shaft 10 is engaged and connected with the plurality of transmission pads 101. The rotating shaft 10 and the plurality of transmission pads 101 are relatively fixed in the axial and circumferential directions. The linkage core includes a transition core 6 that is axially fixed to the thumbwheel 9 and an extension core 7 that is relatively fixed in the axial and circumferential directions to the transition core 6 and is located in the tubular cavity of the rotating shaft 10. A plurality of extension pads 71 ​​are provided on the extension core 7. The extension core 7 is engaged and connected with the plurality of extension pads 71. The extension core 7 and the plurality of extension pads 71 ​​are relatively fixed in the axial and circumferential directions. By increasing or decreasing the number of the thumbwheel pad 91, the transmission pad 101 and the extension pad 71, the requirements of the overall length of the idle lock for different door thicknesses can be met, and the thumbwheel pad 91, the transmission pad 101 and the extension pad 71 only need to be designed once and produced using a set of molds or tooling, which can greatly reduce the cost of process manufacturing. At the same time, there is no need to prepare materials for each set of locks of different specifications, which also reduces the inventory and the corresponding working capital, and correspondingly reduces the inventory cost.

[0073] In this embodiment, a connection terminal socket 47 for signal line connection is provided on one end of the idle core 4 facing outside the door and one end of the linkage core facing inside the door; a wiring cavity for accommodating the signal line and suitable for the signal line to connect to the connection terminal socket 47 is provided in the linkage core, and a wiring groove is formed on the outer peripheral side wall of the idle core 4, which is connected to the wiring cavity and suitable for the signal line to connect to the connection terminal socket 47. The provision of two connection terminal sockets 47, the wiring cavity and the wiring groove facilitates the installation of the signal line on the lock core and the orderly wiring of the signal line.

[0074] On the other hand, the present invention further provides a mechanical lock, comprising a lock body and an idle lock head as described above installed on the lock body, wherein the idle lock head pushes the lock tongue mechanism on the lock body to extend or retract through the rotation of the dial wheel 9.

[0075] In summary, the idle lock and mechanical lock provided by the embodiments of the present invention are characterized by connecting a clutch transmission core 5 which can be circumferentially fixed with the idle core 4 and relatively axially slidable to the idle core 4, and the clutch transmission core 5 axially slides between a transmission engagement position in which the clutch transmission core 5 realizes relative circumferential fixation with the dial wheel 9 and the lock core 8 and a transmission separation position in which the clutch transmission core 5 releases the relative circumferential fixation with the dial wheel 9 and the lock core 8; at the same time, a tubular rotating shaft 10 which is transmission-connected to the dial wheel 9 at one end and is in a tubular shape is accommodated in the inner lock sleeve 2, and a linkage core which is transmission-connected to the clutch transmission core 5 and relatively axially fixed and relatively circumferentially slidable with the tubular cavity of the rotating shaft 10 and / or the through hole of the dial wheel 9 is arranged in the tubular cavity of the rotating shaft 10, and the linkage core A wiring cavity is provided inside the core that is through and suitable for accommodating the signal line. A wiring groove is provided on the outer peripheral wall of the idling core 4 that is connected to the wiring cavity and suitable for connecting the signal line to the connection terminal socket 47, so that the signal line that can extend from one end of the lock core to the other end can be installed on the lock core conveniently. The signal line can freely rotate coaxially and synchronously with the lock core composed of the idling core 4 and the clutch transmission core 5 relative to other components, 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 will not drive the signal line to rotate. Therefore, under the premise that the inner and outer sides of the idling lock can act independently and the outer door lock has a key opening function, the problem of twisting and entanglement of the signal line caused by the upgrade of the mechanical lock to the smart lock is avoided.

[0076] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An idling lock, comprising: A lock sleeve, comprising an outer lock sleeve (1) and an inner lock sleeve (2), wherein the outer cavity in the outer lock sleeve (1) and the inner cavity in the inner lock sleeve (2) are both cylindrical, and the cylinders are arranged along the same axis, and a wheel groove is provided between the outer lock sleeve (1) and the inner lock sleeve (2); A thumbwheel (9) has a through hole with the axis as the axis center and is rotatably arranged in the wheel groove around the axis, suitable for driving a bolt mechanism in the door lock to realize an unlocking action or a locking action; A lock core, which is arranged in the lock sleeve from the outer cavity through the through hole on the dial wheel (9) to the inner end of the inner cavity; It is characterized in that The lock core comprises an idle core (4) accommodated in the outer cavity and having a key hole suitable for inserting a key, a locking core (8) arranged between the idle core (4) and the dial wheel (9) and axially positioned relative to the lock sleeve, and a clutch transmission core (5) circumferentially fixed relative to the idle core (4) and connected to the axial sliding connection, wherein the clutch transmission core (5) is driven by the insertion and extraction of the matching key and axially slides between a transmission engagement position in which the clutch transmission core (5) is relatively circumferentially fixed with the dial wheel (9) and the locking core (8) and a transmission separation position in which the clutch transmission core (5) is relatively circumferentially fixed with the dial wheel (9) and the locking core (8) and released; The idling anti-theft secret key mechanism has a locking state in which the locking core (8) is locked to the outer lock sleeve (1) when the matching key is not inserted into the key hole of the idling core (4), and an unlocking state in which the lock between the outer lock sleeve (1) and the locking core (8) is released and the idling core (4) and the locking core (8) are relatively circumferentially locked when the matching key is inserted into the key hole of the idling core (4); The idling anti-theft secret key mechanism comprises a sleeve keyway formed on the inner wall of the outer cavity, a core keyway formed on the outer periphery of the idling core (4) and recessed inwardly corresponding to the sleeve keyway, and a locking slot formed on the locking core (8) and corresponding to the position of the sleeve keyway; The locking key (11) is partially accommodated in the sleeve keyway under the thrust of the secret key assembly in the idle core (4), and the other part is accommodated in the locking card slot, so as to realize the relative circumferential locking of the lock sleeve and the locking core (8); when the thrust of the secret key assembly disappears, the locking key (11) slides out of the sleeve keyway and enters into the core keyway under the action of a biasing force in the direction of the idle core (4), so as to realize the relative circumferential locking of the idle core (4) and the locking core (8).

2. The idle lock according to claim 1, characterized in that: The secret key assembly comprises a plurality of blade grooves formed on the idle core (4), which are arranged in sequence along the axial direction of the idle core (4) and form an angle with the axial direction, wherein key blades are arranged in each blade groove, and a notch is provided on the key blade; the plurality of notches of each key blade are kept staggered with each other under the action of biasing force so as to push the locking key (11) into the locking state, and form a linear groove for allowing the locking key (11) to slide out of the key slot when a matching key is inserted into the keyhole to overcome the biasing force applied to each key blade.

3. The idle lock according to claim 2, characterized in that: The idling anti-theft key mechanism also includes an idling key (42) radially slidably arranged in the core keyway; when the locking key (11) is in the locked state, the idling key (42) is completely in the core keyway and presses the locking key (11) to be embedded in the sleeve keyway; when the locking key (11) is in the unlocked state, the idling 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 enter the core keyway.

4. According to the idle-turn lock head of claim 1, the outer lock sleeve (1) is provided with at least two biasing member mounting holes corresponding to and communicating with the key slot positions, and a key biasing mechanism is provided in the biasing member mounting hole for applying a biasing force on the locking key (11) toward the idle-turn core (4).

5. The idle lock according to claim 1, characterized in that: The idle core (4) and the clutch transmission core (5) are fixed relative to each other in the circumferential direction and can slide relative to each other in the axial direction through mutually engageable pawl structures.

6. The idle lock according to any one of claims 1 to 5, characterized in that: The locking core (8) has a central through hole coaxially arranged with the through hole of the thumbwheel (9), and the clutch transmission core (5) is arranged in the through hole and the central through hole; the clutch transmission core (5) and the thumbwheel (9) are relatively circumferentially fixedly engaged and separated by a first separation interlocking structure, and the clutch transmission core (5) and the locking core (8) are relatively circumferentially fixedly engaged and separated by a second separation interlocking structure, and the engagement and separation of the second separation interlocking structure precede the engagement and separation of the first separation interlocking structure, or the engagement and separation of the two are achieved simultaneously.

7. The idle lock according to claim 6, characterized in that: The first separation and interlocking structure comprises a first interlocking protrusion (501) arranged on the outer wall of the clutch transmission core (5) and a first interlocking groove (911) arranged on the inner wall of the through hole of the dial wheel (9); the second separation and interlocking structure comprises a second interlocking protrusion (502) arranged on the outer wall of the clutch transmission core (5) and a second interlocking groove (801) arranged on the inner wall of the central through hole of the locking core (8).

8. The idle lock according to claim 7, characterized in that: The first engaging groove (911) has a first embedding opening facing the first engaging protrusion (501); the second engaging groove (801) has a second embedding opening facing the second embedding protrusion (502); during the movement of the clutch transmission core (5) from the transmission disengagement position to the transmission engagement position, the second embedding protrusion (502) enters the second embedding opening no later than the first embedding protrusion (501) enters the first embedding opening.

9. The idle lock according to any one of claims 1 to 5, characterized in that: The clutch transmission core (5) is biased against the idle core (4) so ​​as to tend to remain in the transmission disengagement position.

10. The idle lock according to claim 9, characterized in that: It also comprises a tubular rotating shaft (10) which is arranged in the inner cavity and one end of which is transmission-connected to the thumbwheel (9); the lock core also comprises a linkage core which is arranged in the tubular cavity of the rotating shaft (10) and / or the through hole of the thumbwheel (9) so as to be relatively axially fixed and transmission-connected to 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).

11. The idle lock according to claim 10, characterized in that: A buffer mechanism is provided at one end of the clutch transmission core (5) facing the idle core (4).

12. The idle lock according to claim 11, characterized in that: The buffer mechanism comprises a through cavity formed in the clutch transmission core (5) and axially extending therethrough, a convex ring being provided on the inner wall of the through cavity; a guide rod (51) axially slidably mounted in the through cavity and extending through the convex ring, an annular boss being provided on a side of the guide rod (51) close to the idle core (4); and a buffer spring (52) sleeved on the guide rod (51) being provided between the convex ring and the annular boss.

13. The idle lock according to claim 12, characterized in that: The biasing force of the clutch spring (53) on the clutch transmission core (5) acts on the convex ring; the elastic force of the buffer spring (52) is greater than the elastic force of the clutch spring (53).

14. The idle lock according to claim 7, characterized in that: The thumbwheel (9) is composed of a thumbwheel body and a plurality of thumbwheel pads (91) which are mutually engaged and connected to be relatively fixed in the axial and circumferential directions. A corresponding structure which can be engaged with the first engaging groove (911) is also arranged on the thumbwheel pad (91).

15. The idle lock according to any one of claims 10 to 13, characterized in that: A plurality of transmission cushion blocks (101) are arranged on the rotating shaft (10), the rotating shaft (10) is engaged and connected with the plurality of transmission cushion blocks (101), and the rotating shaft (10) and the plurality of transmission cushion blocks (101) are relatively fixed in the axial direction and the circumferential direction.

16. The idle lock according to any one of claims 10 to 13, characterized in that: The linkage core comprises a transition core (6) axially fixed to the thumbwheel (9) and an extension core (7) axially and circumferentially fixed relative to the transition core (6) and located in the lumen of the rotating shaft (10).

17. The idle lock according to claim 16, characterized in that: The extension core (7) is provided with a plurality of extension pads (71), the extension core (7) is snap-connected with the plurality of extension pads (71), and the extension core (7) and the plurality of extension pads (71) are relatively fixed in the axial and circumferential directions.

18. The idle lock according to any one of claims 10 to 13, characterized in that: The outer end of the idle core (4) and the inner end of the linkage core are both provided with a connection terminal socket (47) for connecting the signal line; the linkage core is provided with a wiring cavity for accommodating the signal line and suitable for the signal line to connect to the connection terminal socket (47); the outer peripheral side wall of the idle core (4) is formed with a wiring groove that is connected to the wiring cavity and suitable for the signal line to connect to the connection terminal socket (47).

19. A mechanical lock, characterized in that: The invention comprises a lock body and an idle lock head as claimed in any one of claims 1 to 18 installed on the lock body, wherein the idle lock head pushes a lock tongue mechanism on the lock body to extend or retract through the rotation of the dial wheel (9).

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