A lock and a lock

Abstract

The present invention provides a lock head and a lockset, wherein the lock head comprises a lock core body, a thumbwheel, a lock core, an anti-lock operating member, an axial locking mechanism, and a pushing member. In the normal state of the lock head, when no key is inserted, the anti-lock clutch mechanism and the thumbwheel rotate synchronously. After the key is inserted, the key end pushes the pushing member, the anti-lock clutch mechanism is disengaged from the thumbwheel, and the key can be turned to unlock the door. In the anti-lock state, the anti-lock clutch mechanism and the thumbwheel rotate synchronously, and are restricted by the locking member so that the anti-lock clutch mechanism and the thumbwheel rotate synchronously. The lock core clutch mechanism is disengaged from the thumbwheel, the pushing member is constrained by the locking member to resist the key end, and neither the anti-lock clutch mechanism nor the pushing member can be reset. The anti-lock operating member drives the thumbwheel to rotate a certain angle so that the deadbolt mechanism is in a locked-out state. At this time, if the door is mistakenly operated in the open state, the deadbolt mechanism will prevent the door from closing, effectively avoiding the problem of being unable to unlock the door from outside due to mistaken anti-locking in the open state.

Description

Technical Field

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

[0002] The existing conventional lock can be locked by turning a knob indoors and then unlocked with a matching key outdoors. However, after the indoor knob is locked, it cannot prevent people outdoors from unlocking and entering with a matching key, which has low security and cannot meet the user's multi-functional needs.

[0003] Chinese patent document CN2534317Y discloses a lock head with a reverse locking function. A knob is pivotally mounted in the inner locking sleeve hole (i.e., the knob hole) of the lock head. A button pivot slot is formed on one side of the knob, and a through hole for mounting the button is formed inside the knob. A button pivot is provided on the sidewall of the button pivot slot corresponding to the button pivot slot, and a button pivot key opening is formed in the middle of the button pivot. The inner end of the button is connected to a clutch pin (i.e., a limit rod), which is connected to a dial wheel (i.e., a shift fork) via a key pin. A latch hole for mounting a radially retractable latch is provided on the inner locking sleeve (i.e., the rear end body) opposite the button pivot. To reverse lock the lock head, the button shaft is pushed inward from inside the room. The button rod then drives the button pivot forward. When the button pivot key opening on the button pivot aligns with the latch pin, the latch pin, under the action of a spring, extends into the button pivot key opening of the button pivot. At this time, the button rod cannot return to its original position due to the engagement between the bayonet pin on the inner lock sleeve and the button pivot key opening on the button pivot. At this time, the rear end of the button rod just contacts the clutch pin, pushing the clutch pin to the lower part of the key pin, blocking the two key slots below the key pin. Even if the original key is used outdoors, it cannot be fully inserted into the keyhole to unlock the door, thus achieving reverse locking. When the door is to be opened, the ellipsoidal knob is rotated in the unlocking direction. The knob pivot slot on the knob drives the button pivot to rotate, causing the button pivot key opening and the bayonet pin to stagger. The button rod immediately returns to its original position under the action of the button return spring. Even if the knob is turned back to its original position, the button rod cannot lock the door. The door can be opened normally with the key outdoors.

[0004] The lock head with anti-locking function has no linkage with the dial during the locking and unlocking process. The button can be locked when the door is open. It is easy for no one in the room to lock the door first and then close the door, resulting in the door being unable to be unlocked from the outside. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the lock head with an anti-locking function is easily anti-locked when the door is open, resulting in the door being difficult to open.

[0006] To this end, the present invention provides a lock head, including:

[0007] The lock core body comprises an inner sleeve body and an outer sleeve body;

[0008] A thumbwheel is rotatably disposed between the inner sleeve and the outer sleeve; the thumbwheel rotates to drive the locking bolt mechanism to lock in or out;

[0009] A lock core is provided in the outer housing and is turned by inserting a corresponding key, thereby driving the dial to rotate through a lock core clutch mechanism;

[0010] An anti-lock operating member is rotatable and axially slidable between an anti-locking position and an anti-locking unlocking position in the inner sleeve, and rotates in a non-key-inserted state to drive the dial to rotate through the anti-locking clutch mechanism;

[0011] The cam is adapted to engage the latching member and engage with the cam in a manner that allows the latch to be released from the locking mechanism and to engage with the cam in a manner that allows the latching member ...

[0012] The pushing component is arranged between the lock core and the locking component. In the reverse locking position, it is constrained by the locking component and resists the end of the key, so that the key cannot be fully inserted into the lock core. In the reverse locking and unlocking position, the locking component releases the constraint on the pushing component.

[0013] Optionally, in the above-mentioned lock head, the lock core clutch mechanism has a lock core clutch block which is axially slidably arranged between the inner cavity of the dial wheel and the inner cavity of the outer shell on which the lock core is installed. The lock core clutch block is connected to the lock core through a first axially slidable interlocking structure and is connected to the dial wheel through a second axially slidable interlocking structure.

[0014] When the cam is in the unlocked position, the key is pressed against the locking member and the latch is engaged, and the cam is engaged with the first latch and the last latch is engaged, and the cam is engaged with the first latch and the last latch is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged, and the cam is engaged,

[0015] The lock cylinder can be locked by the locking cam, and the locking cam can be locked by the locking cam, so that the locking cam can be locked. One end of the lock clutch elastic member is provided at the bottom of the concave cavity of the anti-lock clutch block, and the other end abuts the anti-lock operating member to apply a biasing force to separate the anti-lock clutch block and the bottom of the anti-lock clutch block concave cavity; the biasing force applied by the lock core clutch elastic member and the anti-lock clutch elastic member causes the lock core clutch block and the anti-lock clutch block to abut against each other, and when the anti-lock operating member is in the anti-lock position and the key is not inserted, the lock core clutch block is separated from the dial wheel to achieve thrust balance, and when the key is inserted, the lock core clutch elastic member is compressed, thereby pushing the lock core clutch block to push the anti-lock clutch block to overcome the biasing force of the anti-lock clutch elastic member and disengage from the dial wheel.

[0016] Optionally, the above-mentioned lock head further includes a first limiting member fixed on the pushing component between the lock core clutch block and the anti-locking clutch block, and both ends of the first limiting member respectively abut against the end of the lock core clutch block facing the anti-locking clutch block.

[0017] Optionally, in the above-mentioned lock head, the pushing component is provided with a slot, and the first limiting member is engaged in the slot.

[0018] Optionally, the lock head further includes a positioning mechanism, the positioning mechanism including a transmission core and a positioning member, the transmission core being axially fixed and rotatably arranged in the inner sleeve between the anti-lock operating member and the anti-lock clutch block; the anti-lock operating member is connected to the transmission core via a fourth interlocking structure at one end thereof facing the dial so that the two remain circumferentially fixed, and the anti-lock operating member is axially movable relative to the transmission core; a first positioning hole and a second positioning hole are circumferentially spaced apart on an outer wall of the transmission core;

[0019] The positioning member can be automatically and telescopically arranged in the third positioning hole on the lock core body. In the normal state, the positioning member is embedded in the first positioning hole. In the reverse locking state, the positioning member is embedded in the second positioning hole.

[0020] Optionally, in the above-mentioned lock head, the fourth interlocking structure includes a third protrusion provided on the anti-lock operating member and a third recessed portion provided on the transmission core.

[0021] Optionally, in the lock head, the first engaging structure comprises a first protruding portion radially protruding from the outer wall of the lock core clutch block and a first axially extending recessed portion provided on the lock core and suitable for the first protruding portion to be embedded;

[0022] The second interlocking structure includes the first protrusion and an axially extending second recessed portion provided on the inner wall of the thumbwheel and radially recessed, axially penetrating the inner wall of the thumbwheel and suitable for the first protrusion to be embedded in;

[0023] The third engaging structure includes the second recessed portion and a second protruding portion radially protruding from the outer wall of the anti-locking clutch block, and the second protruding portion is suitable for being embedded in the second recessed portion.

[0024] Optionally, the above-mentioned lock head also includes a limiting mechanism, which has a second limiting member arranged in a limiting hole formed on the inner sleeve and a limiting groove arranged on the outer wall of the anti-lock operating member; the end of the axial length of the second limiting member abutting the limiting groove corresponds to the anti-locking position and the anti-locking unlocking position of the anti-locking operating member.

[0025] Optionally, in the above-mentioned lock head, the axial locking mechanism also includes a rotational locking groove extending axially along the outer wall of the anti-lock operating member, and the rotational locking groove and the axial locking groove are staggered in the axial and circumferential directions of the anti-lock operating member; when the anti-lock operating member is in the anti-lock and unlock position, one end of the locking member is embedded in the rotational locking groove.

[0026] Optionally, in the above-mentioned lock head, the bottom of the rotation locking slot is a slope, and the slope increases in height from close to the thumb wheel to away from the thumb wheel and extends to the outer wall of the anti-lock operating member.

[0027] Optionally, the above-mentioned lock head also includes a limiting mechanism, which has a second limiting member arranged in a limiting hole formed on the inner sleeve and a limiting groove arranged on the outer wall of the anti-lock operating member; the end of the axial length of the second limiting member abutting the limiting groove corresponds to the anti-locking position and the anti-locking unlocking position of the anti-locking operating member; the arc length of the circumferential scale of the limiting groove is greater than the circumferential arc length from the rotational locking groove to the entrance of the axial locking groove.

[0028] Optionally, in the above-mentioned lock head, the anti-lock operating member includes a knob and an extension shaft rotatably and slidably arranged in the inner sleeve body, the outer end of the knob protrudes from the inner sleeve body, the inner end of the knob is fixedly connected to the extension shaft, and the end of the extension shaft facing the dial wheel is suitable for pushing the anti-lock clutch block.

[0029] Optionally, in the above-mentioned lock head, one end of the extension shaft is inserted into the knob, and the limiting groove is provided between the knob and the extension shaft.

[0030] Optionally, in the above-mentioned lock head, the rotation locking groove and the axial locking groove are provided on the extension shaft.

[0031] The present invention provides a lock comprising the lock head and a lock body as described above, wherein the lock head is installed in a lock core hole on the lock body.

[0032] Optionally, the above-mentioned lock further includes an unlocking dial plate, a linkage structure and a lock tongue, and the outer wall of the anti-lock operating member is provided with a rotation locking slot; the lock tongue is telescopically provided on the lock body, the unlocking dial plate is connected to the lock tongue through a linkage structure, and the unlocking dial plate is rotatably provided in the lock body; a notch is provided on the unlocking dial plate, and when the lock tongue is locked, the angle from the dial wheel to the outer edge of the unlocking dial plate is smaller than the angle from the rotation locking slot to the entrance of the axial locking slot; in the anti-lock state, the dialing end of the dial wheel is engaged in the notch.

[0033] The technical solution of the present invention has the following advantages:

[0034] 1. The lock head provided by the present invention is such that when the thumb wheel corresponds to the lock tongue mechanism in the locked position and the anti-lock operating member is in the anti-lock and unlock position; when the thumb wheel corresponds to the lock tongue mechanism in the locked out position, the anti-lock operating member is axially moved to make the locking member coincide with the locking slot axially, and the anti-lock operating member is rotated to lock and engage the locking member in the locking slot to prevent the locking slot from moving axially. At the same time, the anti-lock operating member pushes the pushing member toward the lock core and constrains the pushing member so that the pushing member resists the end of the key, preventing the key from being fully inserted into the lock core to achieve anti-lock. When the key is in the unlocked state, the anti-lock clutch mechanism and the thumbwheel are in a synchronous rotation state. When the key is inserted, the key end pushes the pushing component, the anti-lock clutch mechanism is disengaged from the thumbwheel, and the lock cylinder clutch mechanism and the thumbwheel are in a synchronous rotation state. The key can be turned to unlock the door. When the key is in the unlocked state, the anti-lock clutch mechanism and the thumbwheel are in a synchronous rotation state. The lock cylinder clutch mechanism is disengaged from the thumbwheel, and the pushing component is constrained by the locking component to resist the key end. The anti-lock clutch mechanism and the pushing component cannot be reset. At this time, the anti-lock operating component has driven the thumbwheel to rotate a certain angle to put the deadbolt mechanism in the locked state. At this time, if it is operated by mistake in the door open state, the deadbolt mechanism will prevent the door from closing, effectively avoiding the problem of being unable to unlock the door outdoors due to accidental anti-locking in the door open state. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A cross-sectional view of the lock provided in Example 1 of the present invention in a normal state with a key inserted into the lock cylinder;

[0037] Figure 2 This is an exploded view of the lock provided in Example 1 of the present invention;

[0038] Figure 3 An exploded view of the lock head connecting shaft, transmission core, anti-lock clutch block, dial wheel, lock core clutch block and lock core provided in Example 1 of the present invention;

[0039] Figure 4 A schematic diagram of a lock provided in Example 1 of the present invention;

[0040] Figure 5 A cross-sectional view of the lock provided in Example 1 of the present invention in a normal state;

[0041] Figure 6A cross-sectional view of the lock head after the button is pushed toward the inner side of the inner sleeve;

[0042] Figure 7 for Figure 6 Schematic diagram of the three-dimensional structure of the button, extension shaft and locking member in the lock head in the corresponding state;

[0043] Figure 8 It is a cross-sectional view of the lock head in the reverse locking state;

[0044] Figure 9 for Figure 8 Schematic diagram of the three-dimensional structure of the button, extension shaft and locking member in the lock head in the corresponding state;

[0045] Figure 10 Schematic diagram of the cooperation between the button and the second limiting member;

[0046] Figure 11 Schematic diagram of the cooperation between the button and the second limiting member;

[0047] Figure 12 A schematic diagram of a lock provided in Example 2 of the present invention in a normal state with the lock tongue in a locked state;

[0048] Figure 13 A schematic diagram of a lock provided in Example 2 of the present invention in a normal state with the lock tongue in a locked-out state;

[0049] Figure 14 This is a schematic diagram of a lock provided in Example 2 of the present invention in a reverse locked state and a lock tongue in a locked out state.

[0050] Description of reference numerals:

[0051] 1. Lock core body; 2. Knob; 21. Limiting groove; 3. Dial; 31. Second recessed portion; 4. Key; 5. Lock core; 51. First recessed portion; 6. Extended shaft; 60. Third protruding portion; 61. Rotary locking slot; 62. Axial locking slot; 7. Transmission core; 70. Third recessed portion; 71. First positioning hole; 72. Second positioning hole; 8. Pushing component; 9. Lock core clutch block; 91. First protruding portion; 10. Anti-locking clutch block; 101. Second protruding portion; 11. Lock core clutch elastic member; 12. Anti-locking clutch elastic member; 13. First limiting member; 14. Second limiting member; 15. Locking member; 16. Positioning member; 17. Key pin; 18. Retaining spring; 191. Lock body; 192. Unlocking dial plate; 1921. Notch; 193. Lock tongue. DETAILED DESCRIPTION

[0052] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0055] 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.

[0056] Example 1

[0057] This embodiment provides a lock, such as Figures 1 to 6 as well as Figure 8As shown, it includes a lock core body 1, a thumbwheel 3, a lock core 5, an anti-lock operating member, an axial locking mechanism and a pushing component 8, wherein the lock core body 1 has an inner sleeve body and an outer sleeve body; the thumbwheel 3 is rotatably arranged between the inner sleeve body and the outer sleeve body; the thumbwheel 3 rotates to drive the lock tongue mechanism to lock in or out; the lock core 5 is arranged in the outer sleeve body, and the corresponding key 4 is inserted and turned to drive the thumbwheel 3 to rotate through the lock core clutch mechanism; the anti-lock operating member is rotatable and axially slidable in the inner sleeve body between an anti-lock position and an anti-lock unlock position, and rotates when the key 4 is not inserted, and drives the thumbwheel 3 to rotate through the anti-lock clutch mechanism; the axial locking mechanism has a locking member 15 and an axial locking slot 62, and the locking member 15 is movably arranged in a locking hole formed in the inner sleeve body toward or away from the anti-lock operating member, and the axial locking slot 62 corresponds to the anti-lock operating member. The outer wall of the axially movable anti-locking position of the part is formed along a partial circumferential extension, and at least one end of the axial locking slot 62 is suitable for sliding the locking part 15 sliding on the outer wall surface of the anti-locking operating part in and out; when the lock tongue mechanism corresponding to the thumb wheel 3 is in the locked position and the anti-locking operating part is in the anti-locking and unlocking position, the locking part 15 is arranged close to the thumb wheel 3 relative to the locking slot, and the two do not overlap axially; when the lock tongue mechanism corresponding to the thumb wheel 3 is in the locked out position, the locking part 15 overlaps with the locking slot axially, and the two are axially locked and engaged with each other by axially moving to the anti-locking position; the pushing component 8 is arranged between the lock cylinder 5 and the locking component 15, and is constrained by the locking component 15 in the anti-locking position, and resists the end of the key 4, so that the key 4 cannot be fully inserted into the lock cylinder 5; and in the anti-locking and unlocking position, the locking component 15 releases the constraint on the pushing component 8.

[0058] When the lock head of this structure is in the locked position corresponding to the lock tongue mechanism of the dial wheel 3, the anti-lock operating member is in the anti-lock and unlock position; when the lock tongue mechanism of the dial wheel 3 is in the locked out position, the anti-lock operating member is axially moved to make the locking member 15 coincide with the locking slot axially, and the anti-lock operating member is rotated to lock the locking member 15 in the locking slot to prevent the locking slot from moving axially. At the same time, the anti-lock operating member pushes the pushing member 8 toward the lock cylinder 5 and constrains the pushing member 8 so that the pushing member 8 resists the end of the key 4, so that the key 4 cannot be fully inserted into the lock cylinder 5 to achieve anti-lock. When the key 4 is inserted, the end of the key 4 pushes the pushing component 8, the anti-lock clutch mechanism and the dial wheel 3 are disengaged, and the lock cylinder clutch mechanism and the dial wheel 3 are kept in a state of synchronous rotation, and the key 4 can be turned to unlock the door.

[0059] See also Figures 1 to 3 、 Figure 5 、 Figure 6 and Figure 8 The lock core clutch mechanism has a lock core clutch block 9 which is axially slidably arranged between the inner cavity of the dial wheel 3 and the inner cavity of the outer shell body on which the lock core 5 is installed. The lock core clutch block 9 is connected to the lock core 5 through a first axially slidable interlocking structure and is connected to the dial wheel 3 through a second axially slidable interlocking structure.

[0060] When the anti-lock clutch mechanism is in the process of moving from the anti-lock unlocking position to the anti-lock locking position, the anti-lock clutch block 10 is pushed by the key 4 to slide axially toward the thumbwheel 3, so that the anti-lock clutch block 10 is circumferentially fixedly connected to the thumbwheel 3 through the third interlocking structure, and the lock cylinder clutch block 9 is disengaged from the thumbwheel 3; on the contrary, after the anti-lock operating member returns to the anti-lock unlocking position, the key 4 pushes the lock cylinder clutch block 9 to be circumferentially fixedly connected to the thumbwheel 3 through the second interlocking structure, and the anti-lock clutch block 10 is disengaged from the thumbwheel 3.

[0061] Specifically, see Figure 2 and Figure 3 The first interlocking structure includes a first protrusion 91 radially protruding from the outer wall of the lock core clutch block 9 and an axially extending first recessed portion 51 provided on the lock core 5 and suitable for the first protrusion to be embedded; the second interlocking structure includes a first protrusion and an axially extending second recessed portion 31 radially recessed on the inner wall of the dial wheel 3, axially penetrating the inner wall of the dial wheel 3 and suitable for the first protrusion to be embedded; the third interlocking structure includes a second recessed portion 31 and a second protrusion 101 radially protruding from the outer wall of the anti-locking clutch block 10, and the second protrusion 101 is suitable for being embedded in the second recessed portion 31.

[0062] See also Figure 1 、 Figure 5 、 Figure 6 and Figure 8 , the lock cylinder clutch block 9 has a concave cavity with an opening toward the lock cylinder 5, and the anti-lock clutch block 10 has a concave cavity with an opening toward the anti-lock operating member, and a perforation is formed in the center of the bottom of each concave cavity; the pushing component 8 is a rod-shaped component slidably arranged in each of the perforations, and a flange is provided at one end of the rod-shaped component facing the lock cylinder 5; a lock cylinder clutch elastic member 11 is sleeved on the rod-shaped component, and the two ends of the lock cylinder clutch elastic member 11 respectively abut the flange and the bottom of the concave cavity of the lock cylinder clutch block 9 to apply a biasing force of separation to the bottom of the concave cavity of the lock cylinder clutch block 9 and the flange of the rod-shaped component; an anti-lock clutch elastic member 12 is also sleeved on the pushing component 8, and one end of the anti-lock clutch elastic member 12 is It is located at the bottom of the concave cavity of the anti-lock clutch block 10, and the other end abuts the anti-lock operating member to apply a biasing force to separate the anti-lock clutch block 10 and the bottom of the concave cavity of the anti-lock clutch block 10; the biasing force applied by the lock cylinder clutch elastic member 11 and the anti-lock clutch elastic member 12 causes the lock cylinder clutch block 9 and the anti-lock clutch block 10 to abut against each other at one end. When the anti-lock operating member is in the anti-lock position and the key 4 is not inserted, the lock cylinder clutch block 9 is separated from the dial wheel 3 to achieve thrust balance. When the key 4 is inserted, the lock cylinder clutch elastic member 11 is compressed, thereby pushing the lock cylinder clutch block 9 to push the anti-lock clutch block 10 to overcome the biasing force of the anti-lock clutch elastic member 12 and separate from the dial wheel 3. Optionally, the lock cylinder clutch elastic member 11 and the anti-lock clutch elastic member 12 are both springs.

[0063] See also Figure 1 、 Figure 5 、 Figure 6 and Figure 8 The lock cylinder further includes a first stopper 13 fixed to the push member 8 between the lock cylinder clutch block 9 and the anti-lock clutch block 10. The two ends of the first stopper 13 respectively abut the ends of the lock cylinder clutch block 9 and the anti-lock clutch block 10 that face each other. The first stopper 13 maintains the pre-load of the lock cylinder clutch elastic member 11 at the bottom of the cavity of the lock cylinder clutch block 9 and the rod-shaped member, facilitating the installation of the lock cylinder clutch block 9, the rod-shaped member, and the lock cylinder clutch elastic member 11.

[0064] Specifically, the push member 8 is provided with a slot into which the first stopper 13 is engaged. The first stopper 13 is easily and conveniently secured. For example, the first stopper 13 can be a stop ring. The locking member 15 is a locking pin, and a spring is provided within the locking hole. The spring is connected to the side of the locking pin facing away from the anti-locking operating member, allowing the locking pin to automatically move toward or away from the anti-locking operating member within the locking hole.

[0065] See also Figure 1 and Figure 2 The lock head also includes a positioning mechanism, which includes a transmission core 7 and a positioning member 16. The transmission core 7 is axially fixed and rotatably arranged in the inner sleeve between the anti-lock operating member and the anti-lock clutch block 10; the anti-lock operating member is connected to the transmission core 7 through a fourth interlocking structure at one end facing the dial 3 so that the two remain circumferentially fixed, and the anti-lock operating member can move axially relative to the transmission core 7; the outer wall of the transmission core 7 is provided with first positioning holes 71 and second positioning holes 72 at circumferential intervals; the positioning member 16 is automatically and telescopically arranged in the third positioning hole on the lock core body 1. In the normal state, the positioning member 16 is embedded in the first positioning hole 71, and in the anti-lock state, the positioning member 16 is embedded in the second positioning hole 72. The fourth interlocking structure includes a third protrusion 60 provided on the reverse locking member and a third recess 70 provided on the transmission core 7. The reverse locking member and the transmission core 7 are circumferentially fixed, allowing relative axial movement but not relative rotation. The first and second positioning holes 71, 72 cooperate with the positioning member 16 to circumferentially position the transmission core 7 and reverse locking member in both the normal and reverse locking states. The reverse locking member and the reverse locking clutch block 10 are transitionally connected via the transmission core 7, allowing relative axial sliding but not relative rotation.

[0066] Optionally, the positioning member 16 is a positioning marble, which is automatically retractable and arranged in the third positioning hole through a spring.

[0067] See also Figures 5 to 11 The lock head also includes a limiting mechanism comprising a second limiting member 14 disposed within a limiting hole formed on the inner sleeve and a limiting groove 21 disposed on the outer wall of the anti-lock operating member. The end of the axial length of the second limiting member 14 abutting the limiting groove 21 corresponds to the anti-locking position and the anti-locking unlocking position of the anti-lock operating member. That is, the axial length of the limiting groove 21 corresponds to the axial distance the anti-lock operating member moves from the anti-locking unlocking position to the anti-locking locking position. The limiting groove 21 restricts the anti-lock operating member from axially moving a fixed distance, so that the locking member 15 and the axial locking groove 62 coincide axially. Rotating the anti-lock operating member can embed and lock the locking member 15 in the axial locking groove 62. Optionally, the second limiting member 14 is a limiting pin.

[0068] The axial locking mechanism also includes a rotational locking groove 61 extending axially along the outer wall of the anti-lock operating member, and the rotational locking groove 61 and the axial locking groove 62 are staggered in the axial and circumferential directions of the anti-lock operating member; when the anti-lock operating member is in the anti-lock and unlock position, one end of the locking member 15 is embedded in the rotational locking groove 61, so that the anti-lock operating member cannot rotate relative to the lock core body 1, so as to avoid the key 4 driving the lock core 5 and the lock core clutch block 9 to rotate during the unlocking process, and the lock core clutch block 9 driving the anti-lock clutch block 10 and the anti-lock operating member to rotate, so as to prevent the user from being uncertain whether the lock head is in the anti-lock state or the normal state indoors.

[0069] See also Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The bottom of the rotation locking groove 61 is a slope, and the height of the slope increases from close to the dial wheel 3 to away from the dial wheel 3 and extends to the outer wall of the anti-lock operating member, so that when the anti-lock operating member is pressed inward, the locking member 15 automatically slides out of the rotation locking groove 61 along the slope. At this time, the anti-lock operating member can be rotated relative to the lock core body 1, and rotating the anti-lock operating member can embed and lock the locking member 15 in the axial locking groove 62.

[0070] The arc length of the circumferential dimension of the limiting groove 21 is greater than the circumferential arc length at the entrance from the rotational locking groove 61 to the axial locking groove 62, ensuring that the locking piece 15 can smoothly enter and exit the rotational locking groove 61 and the axial locking groove 62, and smoothly rotate from the rotational locking groove 61 to the axial locking groove 62.

[0071] See also Figure 1 、 Figure 2 、 Figures 5 to 11 The anti-lock operating member includes a knob 2 and an extension shaft 6, which are rotatably and slidably disposed within the inner sleeve. The outer end of the knob 2 protrudes from the inner sleeve, and the inner end of the knob 2 is fixedly connected to the extension shaft 6. The end of the extension shaft 6 facing the dial wheel 3 is adapted to push the anti-lock clutch block 10. A third protrusion 60 is provided on the extension shaft 6. Optionally, the extension shaft 6 and the button are connected by a fastener. The anti-lock operating member includes the button and the extension shaft 6 as separate components, so that they can be made of different materials.

[0072] One end of the extension shaft 6 is inserted into the knob 2 , and a limiting groove 21 is provided between the knob 2 and the extension shaft 6 .

[0073] The rotation locking slot 61 and the axial locking slot 62 are both provided on the extension shaft 6. Figure 7 and Figure 9 The main part of the limiting groove 21 is formed on the outer wall of the button, and the end surface of the extended shaft 6 facing the button constitutes a side wall of the limiting groove 21. Figure 5As shown, under the biasing action of the anti-lock clutch elastic member 12, the end of the second limit member 14 extending into the inner sleeve abuts against the end face of the extension shaft 6 facing the button, so that the extension shaft 6 is kept in the Figure 5 Both ends of the axial locking slot 62 transition smoothly with the outer peripheral wall of the connecting shaft 6 to allow the locking member 15 to slide in or out.

[0074] The lock head further comprises a key pin 17 and a retaining spring 18 . The key pin 17 is arranged in the lock core body 1 , and the retaining spring 18 is clamped in a groove on the outer peripheral wall of the outer shell.

[0075] The working principle of the lock is:

[0076] In the normal state without anti-lock, such as Figure 5 As shown, the key 4 can be inserted at this time; Figure 1 As shown, after the key 4 is inserted, the end of the key 4 contacts the flange of the rod-shaped component and pushes the rod-shaped component toward the anti-lock clutch block 10. The lock cylinder clutch elastic member 11 is squeezed by the rod-shaped component, pushing the lock cylinder clutch block 9 toward the dial wheel 3 and embedding it into the inner hole of the dial wheel 3, so that the first protrusion embeds into the second recess 31, so that the lock cylinder clutch block 9 and the dial wheel 3 remain circumferentially fixed. The lock cylinder clutch elastic member 11 acts as a buffer during this process. In the event that the second interlocking structure of the lock cylinder clutch block 9 and the dial wheel 3 does not correspond, it ensures that the key 4 can be inserted into the correct position and the pin can be unlocked. The key 4 drives the lock cylinder clutch block 9 and the lock cylinder 5 to rotate synchronously. Once the first protrusion is rotated to the point where it can embed into the second recess 31, the biasing force of the lock cylinder clutch elastic member 11 on the lock cylinder clutch block 9 drives the lock cylinder clutch block 9 to embed into the inner hole of the dial wheel 3. Turning the key 4 drives the dial wheel 3 to rotate and unlock. At the same time, the first limit member 13 fixed to the rod-shaped component pushes the anti-lock clutch block 10 to overcome the biasing force of the anti-lock clutch elastic member 12, causing the anti-lock clutch block 10 to move axially away from the lock cylinder clutch block 9. The anti-lock clutch block 10 is disengaged from the inner hole of the dial wheel 3, while the lock cylinder clutch block 9 is embedded in the inner hole of the dial wheel 3. After the key 4 matches the key pin 17, turning the key 4 can drive the lock cylinder 5 to rotate. The lock cylinder 5 drives the lock cylinder clutch block 9 and the dial wheel 3 to rotate together. The rotation of the dial wheel 3 drives the deadbolt mechanism to lock, realizing the unlocking action.

[0077] When you need to lock it, push the button inwards towards the dial 3, and the button drives the extension shaft 6 to move to Figure 6 and Figure 7 At this time, the locking member 15 slides out from the slope of the rotation locking slot 61 until the locking member 15 coincides with the axial locking slot 62 in the axial direction, and the knob 2 is rotated to the limit angle of the limit slot 21, as shown. Figure 8 and Figure 9As shown, the locking piece 15 is embedded and locked in the axial locking slot 62 to prevent the button and the extension shaft 6 from resetting. The extension shaft 6 moves a certain distance to the right, and the anti-lock clutch block 10 pushes the lock cylinder clutch block 9 out of the dial wheel 3. The rod-shaped component is supported by one end of the extension shaft 6 toward the dial wheel 3 and cannot move axially away from the dial wheel 3. When the key 4 is inserted, the key 4 cannot push the rod-shaped component, and the key 4 cannot match the key ball 17, so the lock cylinder 5 is locked and cannot rotate; at the same time, the anti-lock clutch block 10 is engaged with the dial wheel 3, and the lock cylinder clutch block 9 is separated from the dial wheel 3, so even if the front end of the key 4 is shortened so that the key 4 matches the key ball 17, the lock cylinder 5 can only drive the lock cylinder clutch block 9 to rotate idly but cannot drive the dial wheel 3 to rotate, that is, the unlocking action cannot be achieved.

[0078] When the anti-lock is to be released, it is only necessary to rotate the knob 2 to slide the locking member 15 out of the axial locking slot 62 on the extension shaft 6. At this time, under the action of the anti-lock clutch elastic member 12, the extension shaft 6 can automatically return to the Figure 5 The position state shown is that the anti-lock is released at this time and the door can be unlocked normally using key 4.

[0079] Example 2

[0080] This embodiment provides a lock, such as Figures 12 to 14 As shown, it includes the lock head and lock body 191 in Example 1, and the lock head is installed in the lock core hole on the lock body 191.

[0081] The lock also includes an unlocking dial plate 192, a linkage structure and a lock tongue 193, and the outer wall of the anti-lock operating member is provided with a rotation locking slot 61; the lock tongue 193 is telescopically arranged on the lock body 191, and the unlocking dial plate 192 is connected to the lock tongue 193 through the linkage structure, and the unlocking dial plate 192 is rotatably arranged in the lock body 191; a notch 1921 is provided on the unlocking dial plate 192, and when the lock tongue 193 is locked, the angle from the thumb wheel 3 to the outer edge of the unlocking dial plate 192 is smaller than the angle from the rotation locking slot 61 to the entrance of the axial locking slot 62, that is, the rotation angle of the button and the extension shaft 6 does not reach the anti-lock position, and the lock tongue 193 is locked in the locked state and cannot be anti-locked; in the anti-locked state, the toggle end of the thumb wheel 3 is stuck in the notch 1921, and the thumb wheel 3 cannot drive the unlocking dial plate 192 to rotate, and the door cannot be closed at this time, preventing the door from being unlocked from the outside due to the accidental anti-locking operation in the open door state.

[0082] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A lock, characterized in that: include: The lock core body (1) comprises an inner sleeve body and an outer sleeve body; A thumbwheel (3) is rotatably disposed between the inner sleeve and the outer sleeve; the thumbwheel (3) rotates to drive the locking bolt mechanism to lock in or out; A lock core (5) is arranged in the outer shell, and is turned by inserting a corresponding key (4), thereby driving the thumbwheel (3) to rotate through a lock core clutch mechanism; the lock core clutch mechanism comprises a lock core clutch block (9) axially slidably arranged between the inner cavity of the thumbwheel (3) and the inner cavity of the outer shell on which the lock core (5) is installed; the lock core clutch block (9) is connected to the lock core (5) through a first axially slidable interlocking structure, and is connected to the thumbwheel (3) through a second axially slidable interlocking structure; An anti-lock operating member is rotatable and axially slidable between an anti-locking position and an anti-locking unlocking position in the inner sleeve body, and rotates when the key (4) is not inserted, driving the dial wheel (3) to rotate through the anti-locking clutch mechanism; The axial locking mechanism comprises a locking piece (15) and an axial locking slot (62), wherein the locking piece (15) is arranged in a locking hole formed in the inner sleeve body so as to be movable toward or away from the anti-locking operating piece, and the axial locking slot (62) is formed to extend along a part of the circumference of the outer wall corresponding to the anti-locking locking position of the axial movement of the anti-locking operating piece, and at least one end of the axial locking slot (62) is suitable for the locking piece (15) sliding on the outer wall surface of the anti-locking operating piece to slide in and out; when the thumbwheel (3) corresponds to the locking tongue mechanism in the locked position and the anti-locking operating piece is in the anti-locking and unlocking position, the locking piece (15) is arranged close to the thumbwheel (3) relative to the axial locking slot (62), and the two do not overlap in the axial direction; when the thumbwheel (3) corresponds to the locking tongue mechanism in the locked-out position, the locking piece (15) and the axial locking slot (62) overlap in the axial direction, and the two are axially locked and engaged with each other by axially moving to the anti-locking locking position; A pushing member (8) is arranged between the lock core (5) and the locking member (15), and is constrained by the locking member (15) in the reverse locking position, resisting the end of the key (4) so ​​that the key (4) cannot be fully inserted into the lock core (5); and in the reverse locking / unlocking position, the locking member (15) releases the constraint on the pushing member (8); The anti-lock clutch mechanism comprises an anti-lock clutch block (10) axially slidably arranged between the inner cavity of the inner sleeve and the inner cavity of the thumbwheel (3), the anti-lock clutch block (10) and the thumbwheel (3) are connected via a third axially slidable interlocking structure; the anti-lock operating member and the anti-lock clutch block (10) are connected via a fourth axially slidable interlocking structure, and the anti-lock operating member pushes the anti-lock clutch block (10) toward the anti-lock unlocking position when moving from the anti-lock unlocking position to the anti-lock locking position. The thumbwheel (3) slides axially, so that the anti-lock clutch block (10) is circumferentially fixedly connected to the thumbwheel (3) through the third interlocking structure, and at the same time, the lock core clutch block (9) is separated from the thumbwheel (3); conversely, after the anti-lock operating member returns to the anti-lock and unlock position, the key (4) pushes the lock core clutch block (9) to be circumferentially fixedly connected to the thumbwheel (3) through the second interlocking structure, and at the same time, the anti-lock clutch block (10) is separated from the thumbwheel (3).

2. The lock according to claim 1, characterized in that: The lock core clutch block (9) has a concave cavity with an opening toward the lock core (5), and the anti-lock clutch block (10) has a concave cavity with an opening toward the anti-lock operating member, and a perforation is formed at the center of the bottom of each concave cavity; the pushing component (8) is a rod-shaped component slidably inserted into each perforation, and the rod-shaped component is provided with a flange at one end facing the lock core (5); a lock core clutch elastic component (11) is sleeved on the rod-shaped component, and the two ends of the lock core clutch elastic component (11) respectively abut against the flange and the bottom of the lock core clutch block (9) concave cavity to apply a biasing force to separate the bottom of the lock core clutch block (9) concave cavity and the flange of the rod-shaped component; an anti-lock clutch elastic component (12) is also sleeved on the pushing component (8), and one end of the anti-lock clutch elastic component (12) is provided at the anti-lock clutch. The bottom of the concave cavity of the lock clutch block (10) and the other end abut against the anti-lock operating member to apply a biasing force to separate the anti-lock clutch block (10) and the bottom of the concave cavity of the anti-lock clutch block (10); the biasing force applied by the lock core clutch elastic member (11) and the anti-lock clutch elastic member (12) causes the lock core clutch block (9) and the anti-lock clutch block (10) facing each other to abut against each other, and when the anti-lock operating member is in the anti-lock position and the key (4) is not inserted, the lock core clutch block (9) is separated from the dial wheel (3) to achieve thrust balance; when the key (4) is inserted, the lock core clutch elastic member (11) is compressed, thereby pushing the lock core clutch block (9) to push the anti-lock clutch block (10) to overcome the biasing force of the anti-lock clutch elastic member (12) and separate from the dial wheel (3).

3. The lock according to claim 2, characterized in that: It also includes a first limiting member (13) fixed on the pushing component (8) between the lock core clutch block (9) and the anti-locking clutch block (10), and two ends of the first limiting member (13) respectively abut against the ends of the lock core clutch block (9) and the anti-locking clutch block (10) facing each other.

4. The lock according to claim 3, characterized in that: The pushing component (8) is provided with a slot, and the first limiting member (13) is engaged in the slot.

5. The lock according to any one of claims 1 to 4, characterized in that: The invention also includes a positioning mechanism, wherein the positioning mechanism includes a transmission core (7) and a positioning member (16), wherein the transmission core (7) is axially fixed and rotatably arranged in the inner sleeve between the anti-lock operating member and the anti-lock clutch block (10); the anti-lock operating member is connected to the transmission core (7) through a fourth interlocking structure at one end thereof facing the dial wheel (3) so that the two remain circumferentially fixed, and the anti-lock operating member can move axially relative to the transmission core (7); a first positioning hole (71) and a second positioning hole (72) are circumferentially spaced apart on the outer wall of the transmission core (7); The positioning member (16) can be automatically and telescopically arranged in the third positioning hole on the lock core body (1); in a normal state, the positioning member (16) is embedded in the first positioning hole (71); in a reverse locking state, the positioning member (16) is embedded in the second positioning hole (72).

6. The lock according to claim 5, characterized in that: The fourth interlocking structure comprises a third protruding portion (60) provided on the anti-lock operating member and a third recessed portion (70) provided on the transmission core (7).

7. The lock according to any one of claims 1 to 4, characterized in that: The first engaging structure comprises a first protruding portion (91) radially protruding from the outer wall of the lock core clutch block (9) and a first axially extending recessed portion (51) provided on the lock core (5) and suitable for the first protruding portion to be embedded; The second interlocking structure comprises the first protrusion (91) and an axially extending second recess (31) which is radially recessed in the inner wall of the thumbwheel (3), axially penetrates the inner wall of the thumbwheel (3) and is suitable for the first protrusion to be embedded; The third interlocking structure comprises the second recessed portion (31) and a second protruding portion (101) radially protruding from the outer wall of the anti-locking clutch block (10), wherein the second protruding portion (101) is adapted to be embedded in the second recessed portion (31).

8. The lock according to any one of claims 1 to 4, characterized in that: The invention also includes a limiting mechanism, wherein the limiting mechanism comprises a second limiting member (14) arranged in a limiting hole formed on the inner sleeve body and a limiting groove (21) arranged on the outer wall of the anti-locking operating member; the end of the axial length of the second limiting member (14) abutting against the limiting groove (21) corresponds to the anti-locking position and the anti-locking unlocking position of the anti-locking operating member.

9. The lock according to any one of claims 1 to 4, characterized in that: The axial locking mechanism also includes a rotational locking slot (61) extending axially along the outer wall of the anti-lock operating member, and the rotational locking slot (61) and the axial locking slot (62) are staggered in the axial and circumferential directions of the anti-lock operating member; when the anti-lock operating member is in the anti-lock and unlock position, one end of the locking member (15) is embedded in the rotational locking slot (61).

10. The lock according to claim 9, characterized in that: The bottom of the rotation locking slot (61) is a slope, and the slope increases in height from the direction close to the thumbwheel (3) to the direction away from the thumbwheel (3) and extends to the outer wall of the anti-locking operating member.

11. The lock according to claim 9, characterized in that: The invention also includes a limiting mechanism, wherein the limiting mechanism has a second limiting member (14) arranged in a limiting hole formed on the inner sleeve body and a limiting groove (21) arranged on the outer wall of the anti-locking operating member; the end of the axial length of the second limiting member (14) abutting against the limiting groove (21) corresponds to the anti-locking position and the anti-locking unlocking position of the anti-locking operating member; the arc length of the circumferential dimension of the limiting groove (21) is greater than the circumferential arc length from the rotation locking slot (61) to the entrance of the axial locking slot (62).

12. The lock according to claim 11, characterized in that: The anti-lock operating member comprises a knob (2) and an extension shaft (6) which are rotatably and slidably arranged in the inner sleeve body, wherein the outer end of the knob (2) protrudes from the inner sleeve body, the inner end of the knob (2) is fixedly connected to the extension shaft (6), and the end of the extension shaft (6) facing the dial wheel (3) is suitable for pushing the anti-lock clutch block (10).

13. The lock cylinder according to claim 12, characterized in that: One end of the extension shaft (6) is inserted into the knob (2), and the limiting groove (21) is provided between the knob (2) and the extension shaft (6).

14. The lock cylinder according to claim 12, characterized in that: The rotation locking slot (61) and the axial locking slot (62) are provided on the extension shaft (6).

15. A lock, characterized in that: The invention comprises a lock head and a lock body (191) according to any one of claims 1 to 14, wherein the lock head is installed in a lock core hole on the lock body (191).

16. The lock according to claim 15, characterized in that: It also includes an unlocking plate (192), a linkage structure and a lock tongue (193), and the outer wall of the anti-locking operating member is provided with a rotation locking sliding groove (61); The lock tongue (193) is telescopically arranged on the lock body (191), the unlocking dial plate (192) is connected to the lock tongue (193) through a linkage structure, and the unlocking dial plate (192) is rotatably arranged in the lock body (191); a notch (1921) is provided on the unlocking dial plate (192); when the lock tongue (193) is in a locked state, the angle between the thumbwheel (3) and the outer edge of the unlocking dial plate (192) is smaller than the angle between the rotation locking slot (61) and the entrance of the axial locking slot (62); in an anti-locking state, the dialing end of the thumbwheel (3) is engaged in the notch (1921).

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