Lock cylinder mechanism and well lid locking device and unlocking method

Abstract

The invention discloses a lock cylinder mechanism and a well lid locking device and an unlocking method.The lock cylinder mechanism comprises a lock cylinder assembly, a spring bolt and a locking clutch assembly, the lock cylinder assembly comprises a lock cylinder shaft and a first locking structure, the lock cylinder shaft is provided with a hollow inner cavity, a first through hole is formed in the side wall of the lock cylinder shaft, and the first locking structure is movably arranged in the first through hole; the first locking structure can move outwards to a first clamping position or move inwards to a first avoiding position; the spring bolt is arranged at the first end of the lock cylinder shaft. The locking clutch assembly comprises a first clutch shaft, a second clutch shaft and a third clutch shaft, the first clutch shaft is arranged on the outer side of the first end of the lock cylinder shaft in a sleeving mode, the first clutch shaft and the lock cylinder shaft can rotate relatively, the second clutch shaft is arranged in an inner cavity of the lock cylinder shaft and can reciprocate in the axial direction of the lock cylinder shaft, and the third clutch shaft is arranged in the inner cavity of the lock cylinder shaft. The third clutch shaft is arranged on the outer side of the second end of the lock cylinder shaft in a sleeving mode and can reciprocate in the axial direction of the lock cylinder shaft.

Description

Technical Field

[0001] The present application relates to the technical field of Internet of Things intelligent terminals, and in particular to a lock core mechanism and a manhole cover locking device and unlocking method. Background Art

[0002] Power transmission, communication and other cables are laid through underground pipelines, and underground wells are set up in the underground pipelines to facilitate access to the underground pipelines for laying and maintaining cables. Usually, a manhole cover and a manhole cover locking device are set up at the entrance of the underground well to ensure the safety of advanced instruments in the underground well and underground pipelines. Conventional manhole cover locking devices are realized by the combination of a lock tongue and a lock pin. This structure is simple, easy to obtain, and low in cost, but it is not safe enough and cannot meet the increasingly complex requirements for outdoor use. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present application provides a lock core mechanism, a manhole cover locking device and an unlocking method, and the technical solution adopted is as follows.

[0004] The lock core mechanism provided by the present application includes a lock core assembly, a lock tongue and a locking clutch assembly, the lock core assembly including a lock core shaft and a first locking structure, the lock core shaft is provided with a hollow inner cavity along its own axial direction, the side wall of the lock core shaft is provided with a first through hole, the first locking structure is movably provided in the first through hole, the first locking structure can be moved outward to a first clamping position or inward to a first avoidance position; the lock tongue is provided at the first end of the lock core shaft, and the lock core shaft drives the lock tongue to rotate; the locking clutch assembly includes a first clutch shaft, a second clutch shaft and a third clutch shaft, the first clutch shaft is sleeved on the outside of the first end of the lock core shaft, and the first clutch shaft and the lock core shaft can rotate relative to each other, the second clutch shaft is provided in the inner cavity of the lock core shaft, and the second clutch shaft can be moved along the axial direction of the lock core shaft. Reciprocating movement, the third clutch shaft is sleeved on the outer side of the second end of the lock core shaft, and the third clutch shaft can reciprocate along the axial direction of the lock core shaft; wherein, when locked, the first clutch shaft is located at the first locking position, the first locking structure is in the first clamping position and is clamped with the third clutch shaft to prevent the third clutch shaft from moving axially along the lock core shaft; when unlocked, the first clutch shaft rotates along the first direction and pushes the second clutch shaft to move along the second direction parallel to the first end to the second end of the lock core shaft to provide the first avoidance position to the first locking structure, and the third clutch shaft moves in the opposite direction parallel to the second direction to make the second end of the lock core shaft protrude from the end of the third clutch shaft, and applying torque to the second end of the lock core shaft can rotate the lock core shaft in the opposite direction of the first direction.

[0005] In certain embodiments of the present application, the lock core mechanism includes a locking linkage structure, which is sleeved on the outer side of the first clutch shaft, and the locking linkage structure is connected to the lock tongue, the side wall of the locking linkage structure is provided with a first avoidance area, the first avoidance area runs through the side wall of the locking linkage structure, the outer side wall of the first clutch shaft is provided with a first toggle portion, and the first toggle portion is located in the first avoidance area; when unlocking, the lock tongue drives the locking linkage structure to rotate in a direction opposite to the first direction, and the locking linkage structure abuts against the first toggle portion through the side wall of the first avoidance area to drive the first clutch shaft to rotate synchronously in a direction opposite to the first direction to the first locking position.

[0006] In certain embodiments of the present application, a rotary pushing structure is provided in the first clutch shaft, the rotary pushing structure is located on the outer side of the first end of the lock core shaft, the rotary pushing structure has a rotary pushing inclined surface, and a second sliding portion protruding from the outer side of the lock core shaft is provided on the outer side of the second clutch shaft; when the first clutch shaft is in the first locking position, the second sliding portion is located in a recessed area formed by the rotary pushing inclined surface on the rotary pushing structure, and when the first clutch shaft and the rotary pushing structure rotate along the first direction, the rotary pushing inclined surface pushes the second sliding portion to move the second clutch shaft along the second direction.

[0007] In certain embodiments of the present application, a first slide groove is provided on the side wall of the lock core shaft near the first end, the first slide groove passes through the side wall of the lock core shaft, the first slide groove is arranged parallel to the second direction, the second sliding portion extends from the first slide groove, and the second sliding portion can move along the first slide groove.

[0008] In certain embodiments of the present application, the inner peripheral side wall of the third clutch shaft is provided with a third clamping area, and when the first locking structure is located at the first clamping position, the first locking structure is partially located in the first through hole and partially located in the third clamping area; the outer peripheral side wall of the second clutch shaft is provided with a second avoidance area, and when the first locking structure is located at the first avoidance position, the first locking structure is partially located in the first through hole and partially located in the second avoidance area.

[0009] In certain embodiments of the present application, the locking clutch assembly includes a first elastic member, one end of which is connected to the first clutch shaft, and under the action of the first elastic member, the first clutch shaft can rotate in a first direction so that the first clutch shaft pushes the second clutch shaft to move in a second direction.

[0010] In certain embodiments of the present application, the locking clutch assembly includes a second elastic member, which is arranged at one end of the second clutch shaft, and the second elastic member is close to the second end of the lock core shaft; under the action of the second elastic member, the second clutch shaft can move in the opposite direction of the second direction.

[0011] In certain embodiments of the present application, the locking clutch assembly includes a third elastic member, which is arranged in the locking linkage structure, and the two ends of the third elastic member respectively abut the locking linkage structure and the third clutch shaft; under the action of the third elastic member, the third clutch shaft can move along the first direction.

[0012] The unlocking method provided in this application includes the following workflow:

[0013] The first clutch shaft rotates in a first direction starting from the first locking position, and the first clutch shaft pushes the second clutch shaft to move in a second direction;

[0014] The second clutch shaft moves from the second locking position to the second unlocking position, and the third clutch shaft moves in the opposite direction of the second direction to the third unlocking position, and at the same time, the inner side wall of the third clutch shaft pushes the first locking structure to the first avoidance position, and the first locking structure is engaged with the second clutch shaft;

[0015] The second end of the lock core shaft is exposed from the end surface of the third clutch shaft. The lock core shaft is rotated in the opposite direction to the first direction, and the lock core shaft drives the lock tongue to rotate and unlock.

[0016] The manhole cover locking device provided in the present application includes a lock core mechanism, a lock shell and an unlocking mechanism, wherein the lock core mechanism is arranged in the lock shell; the unlocking mechanism can press the third clutch shaft to move in the opposite direction of the second direction, and the unlocking mechanism is clamped with the second end of the lock core shaft.

[0017] The embodiments of the present application have at least the following beneficial effects: the first clutch shaft, the second clutch shaft and the third clutch shaft cooperate with the first locking structure in the lock core mechanism to realize the conversion between the first engaging position and the first avoiding position, thereby realizing the switching between the two states of the lock core shaft being rotatable and non-rotatable, thereby improving the safety of the lock core mechanism; and in the process of switching from locking to unlocking, the second end of the lock core shaft protrudes from the third clutch shaft, which facilitates the unlocking mechanism to engage the lock core shaft, thereby improving the safety of locking. The present application can be widely used in the field of the technology of IoT smart terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easy to understand in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0019] Figure 1 This is a structural diagram of the lock core mechanism.

[0020] Figure 2 It is a longitudinal sectional view of the lock core mechanism.

[0021] Figure 3 It is a transverse cross-sectional view of the lock core mechanism.

[0022] Figure 4 It is a structural diagram of the lock core shaft, locking linkage structure and locking clutch assembly.

[0023] Figure 5 This is a structural diagram of the lock core shaft.

[0024] Figure 6 This is the structural diagram of the first clutch shaft.

[0025] Figure 7 This is the structural diagram of the second clutch shaft.

[0026] Figure 8 This is the structural diagram of the third clutch shaft.

[0027] Fig. 9 This is the structural diagram of the locking linkage structure.

[0028] Fig.10 It is a state diagram of the lock core shaft, the second clutch shaft, the third clutch shaft and the first locking structure when locked. The figure shows that the first locking structure is in the first engaging position, the second clutch shaft is in the second locking position, and the third clutch shaft is in the third locking position.

[0029] Fig.11 The state diagram of the lock core shaft, the second clutch shaft, the third clutch shaft and the first locking structure when unlocking, showing that the first locking structure is in the first avoidance position, the second clutch shaft is in the second unlocking position, and the third clutch shaft is in the third unlocking position

[0030] Reference numerals:

[0031] 1100, lock core shaft; 1101, first through hole; 1102, first slide groove; 1103, lock core cover;

[0032] 1200, first locking structure;

[0033] 1300, lock tongue;

[0034] 2100, first clutch shaft; 2101, first shifting part; 2102, rotary pushing structure; 2103, recessed area; 2104, first clamping area; 2105, stop plane;

[0035] 2200, second clutch shaft; 2201, second sliding portion; 2202, second avoidance area;

[0036] 2300, third clutch shaft; 2301, third clamping area; 2302, third sliding portion;

[0037] 2401, first elastic member; 2402, second elastic member; 2403, third elastic member; 2404, second locking structure;

[0038] 3000, locking linkage structure;

[0039] 3100, first avoidance zone;

[0040] 3200, second chute. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 To Attachment Fig.11 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0042] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application. The features defined as "first" and "second" are used to distinguish the feature names, rather than having special meanings. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0043] In the description of this application, 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 this application can be understood according to specific circumstances.

[0044] The present application relates to a manhole cover locking device, which includes a lock core mechanism and a lock shell. The lock core mechanism is arranged in the lock shell. It can be understood that the manhole cover locking device also includes a lock pin, which is arranged on the manhole cover. The lock tongue 1300 of the lock core mechanism is engaged with the lock pin to realize the locking of the manhole cover.

[0045] Further, the manhole cover locking device includes an unlocking mechanism, which is used to connect the lock core shaft 1100 of the lock core mechanism and rotate the lock core shaft 1100, thereby unlocking the lock core mechanism. Specifically, the unlocking mechanism includes an unlocking handle, which is used to connect the lock core shaft 1100 and can rotate the lock core shaft 1100.

[0046] The other components and operations of the manhole cover locking device have been recorded in the relevant technology for ordinary technicians in this field and will not be described in detail here. The structure of the lock core mechanism will be introduced below.

[0047] The present application relates to a lock core mechanism, which includes a lock core assembly and a lock tongue 1300. The lock core assembly includes a lock core shaft 1100. The lock tongue 1300 is arranged at the first end of the lock core shaft 1100. The lock core shaft 1100 drives the lock tongue 1300 to rotate so that the lock tongue 1300 is engaged or disengaged with the lock pin to achieve locking or unlocking of the manhole cover.

[0048] Further, the lock core mechanism includes a locking clutch assembly, which is connected to the lock core shaft 1100, and the locking clutch assembly can switch the lock core shaft 1100 to a rotatable or non-rotatable state so as to unlock or lock. In conjunction with the accompanying drawings, the lock core assembly includes a first locking structure 1200, the lock core shaft 1100 is provided with a hollow inner cavity along its own axial direction, the side wall of the lock core shaft 1100 is provided with a first through hole 1101, the first through hole 1101 penetrates the side wall of the lock core shaft 1100, the first locking structure 1200 is movably provided in the first through hole 1101, and the first through hole 1101 is provided with at least two intervals along the circumference, and accordingly, the first locking structure 1200 is provided with at least two. It can be understood that the first locking structure 1200 can move in the first through hole 1101, so as to be engaged with the locking clutch assembly.

[0049] The first locking structure 1200 has a first engaging position and a first avoiding position. In the first through hole 1101, the first engaging position of the first locking structure 1200 is close to the outer side of the lock core shaft 1100, and the first avoiding position is close to the inner side of the lock core shaft 1100. Specifically, the first locking structure 1200 can move outward to the first engaging position, at which time the first locking structure 1200 is engaged with the locking clutch assembly on the outer side of the lock core shaft 1100, the unlocking mechanism cannot be connected to the lock core shaft 1100, the lock core shaft 1100 cannot be rotated, and the manhole cover locking device cannot be unlocked. Alternatively, the first locking structure 1200 can move inward to the first avoiding position, at which time the first locking structure 1200 is engaged with the locking clutch assembly on the inner side of the lock core shaft 1100, the unlocking mechanism can be connected to the lock core shaft 1100, the lock core shaft 1100 can be rotated, and the manhole cover locking device can be unlocked.

[0050] The locking clutch assembly includes a first clutch shaft 2100, a second clutch shaft 2200 and a third clutch shaft 2300. On the lock core shaft 1100, through the cooperation of the first clutch shaft 2100, the second clutch shaft 2200 and the third clutch shaft 2300, the first locking structure 1200 can be moved and switched between the first engaging position and the first avoidance position, thereby achieving the engaging of the unlocking mechanism and the second end of the lock core shaft 1100, and achieving the unlocking and locking of the lock core shaft 1100 by rotating the unlocking mechanism.

[0051] In conjunction with the accompanying drawings, the first clutch shaft 2100 is sleeved on the outer side of the first end of the lock core shaft 1100, and the first clutch shaft 2100 and the lock core shaft 1100 can rotate relative to each other. Further, the first clutch shaft 2100 has a first locking position, and when the lock core mechanism is in a locked state, the first clutch shaft 2100 is in the first locking position. It can be understood that the first clutch shaft 2100 can be rotated relative to the lock core shaft 1100 to rotate to the first locking position or move away from the first locking position.

[0052] The second clutch shaft 2200 is disposed in the inner cavity of the lock core shaft 1100, and the second clutch shaft 2200 can reciprocate along the axial direction of the lock core shaft 1100. Further, the second clutch shaft 2200 has a second locking position and a second unlocking position in the lock core shaft 1100, and the second clutch shaft 2200 can move to the second locking position or the second unlocking position in the lock core shaft 1100. It should be noted that, in the process that the first clutch shaft 2100 rotates relative to the lock core shaft 1100 and moves away from the first locking position, the first clutch shaft 2100 can drive the second clutch shaft 2200 to move along the axial direction of the lock core shaft 1100, so that the second clutch shaft 2200 moves from the second locking position to the second unlocking position. Furthermore, when the second clutch shaft 2200 is in the second unlocking position, the first locking structure 1200 can move to the first avoidance position and engage with the outer side surface of the second clutch shaft 2200, so that the first locking structure 1200 can prevent the second clutch shaft 2200 from moving in the opposite direction from the second unlocking position to the second locking position.

[0053] The third clutch shaft 2300 is sleeved on the outer side of the second end of the lock core shaft 1100, and the third clutch shaft 2300 can reciprocate along the axial direction of the lock core shaft 1100. Further, the third clutch shaft 2300 has a third locking position and a third unlocking position on the outer side of the lock core shaft 1100, and the third clutch shaft 2300 can move to the third locking position or the third unlocking position on the outer side of the lock core shaft 1100. It should be noted that when the second clutch shaft 2200 moves to the second unlocking position, the unlocking mechanism applies pressure to the end of the third clutch shaft 2300, so that the third clutch shaft 2300 can be moved from the third locking position to the third unlocking position along the axial direction of the lock core shaft 1100, so that the unlocking mechanism can be connected with the lock core shaft 1100 and can rotate the lock core shaft 1100 to achieve the unlocking of the manhole cover locking device.

[0054] When locked, the first clutch shaft 2100 is located at the first locking position, the second clutch shaft 2200 is located at the second locking position, and the third clutch shaft 2300 is located at the third locking position. The outer side surface of the second clutch shaft 2200 abuts against the first locking structure 1200, so that the first locking structure 1200 is located at the first engaging position and engaged with the third clutch shaft 2300. It can be understood that the outer side surface of the second clutch shaft 2200 seals the port of the first through hole 1101, so that the first locking structure 1200 and the inner side surface of the third clutch shaft 2300 remain engaged, thereby preventing the third clutch shaft 2300 from moving axially along the lock core shaft 1100. In this case, even if the unlocking mechanism applies pressure to the third clutch shaft 2300, the third clutch shaft 2300 cannot move. On the other hand, at this time, the second end surface of the lock core shaft 1100 does not protrude from the end of the third clutch shaft 2300 or the surface of the lock shell, so the unlocking mechanism cannot be engaged with the lock core shaft 1100 and the manhole cover locking device cannot be unlocked.

[0055] When unlocking, the first clutch shaft 2100 rotates in the first direction, the first clutch shaft 2100 moves away from the first locking position, and the first clutch shaft 2100 pushes the second clutch shaft 2200 to move in the second direction parallel to the first end to the second end of the lock core shaft 1100, so that the second clutch shaft 2200 moves from the second locking position to the second unlocking position, so that the outer surface of the second clutch shaft 2200 provides a first avoidance position for the first locking structure 1200. At this time, the unlocking mechanism applies pressure to the third clutch shaft 2300, so that the third clutch shaft 2300 moves in the opposite direction parallel to the second direction, and the third clutch shaft 2300 moves to the third unlocking position.

[0056] When the third clutch shaft 2300 moves in the opposite direction parallel to the second direction: on the one hand, the inner wall of the third clutch shaft 2300 presses against the first locking structure 1200, so that the first locking structure 1200 moves to the first avoidance position, so that the first locking structure 1200 releases the clamping of the third clutch shaft 2300, and at this time, the inner wall of the third clutch shaft 2300 blocks the port of the first through hole 1101 and presses against the first locking structure 1200, so that the first locking structure 1200 remains clamped with the outer wall of the second clutch shaft 2200. On the other hand, after the third clutch shaft 2300 moves in the direction opposite to the second direction, the second end of the lock core shaft 1100 protrudes from the end of the third clutch shaft 2300, so that the unlocking mechanism can engage with the second end of the lock core shaft 1100. Furthermore, the unlocking mechanism applies torque to the second end of the lock core shaft 1100 to rotate the lock core shaft 1100 in the direction opposite to the first direction. The lock core shaft 1100 drives the lock tongue 1300 to move, thereby realizing the unlocking of the manhole cover locking device.

[0057] As an embodiment, the lock core mechanism includes a locking linkage structure 3000, which is rotatably disposed on a lock shell body. The locking linkage structure 3000 is hollow, and the hollow inner cavity of the locking linkage structure 3000 is formed as a cylindrical inner cavity. The locking linkage structure 3000 is sleeved on the outer side of the first clutch shaft 2100. The locking linkage structure 3000 serves as a shell of the lock core mechanism, and the lock core shaft 1100, the first clutch shaft 2100 and the third clutch shaft 2300 are all disposed on the locking linkage structure 3000.

[0058] In conjunction with the accompanying drawings, the first end of the lock core shaft 1100 extends from the first end of the locking linkage structure 3000 and is connected to the lock tongue 1300. Further, the locking linkage structure 3000 is connected to the lock tongue 1300. When unlocking, the lock core shaft 1100 drives the lock tongue 1300 to rotate, and the lock tongue 1300 drives the locking linkage structure 3000 to rotate synchronously. When unlocking, the locking linkage structure 3000 rotates in the opposite direction of the first direction, and the locking linkage structure 3000 drives the first clutch shaft 2100 to rotate synchronously, so that the first clutch shaft 2100 rotates to the first locking position.

[0059] In conjunction with the accompanying drawings, the side wall of the locking linkage structure 3000 is provided with a first avoidance area 3100, and the first avoidance area 3100 penetrates the side wall of the locking linkage structure 3000. The outer side wall of the first clutch shaft 2100 is provided with a first toggle portion 2101, and the first toggle portion 2101 is located in the first avoidance area 3100. Further, the width of the first avoidance area 3100 is greater than the first toggle portion 2101, and when the first clutch shaft 2100 rotates along the first direction, the first toggle portion 2101 rotating with the first clutch shaft 2100 has a movable space in the first avoidance area 3100, so as to prevent the side wall of the first avoidance area 3100 from hindering the first clutch shaft 2100 from moving away from the first locking position.

[0060] When unlocking, the lock tongue 1300 drives the locking linkage structure 3000 to rotate in the opposite direction of the first direction, and the locking linkage structure 3000 abuts against the first toggle portion 2101 through the side wall of the first avoidance area 3100 to drive the first clutch shaft 2100 to rotate synchronously in the opposite direction of the first direction to the first locking position, thereby realizing the resetting of the first clutch shaft 2100 while the lock core mechanism is unlocked.

[0061] As an embodiment, the lock core mechanism includes a second locking structure 2404, which is located outside the lock core mechanism, and the second locking structure 2404 can be engaged with the first clutch shaft 2100 to fix the first clutch shaft 2100 in the first locking position. Further, the second locking structure 2404 is movable to release the engagement of the second locking structure 2404 with the first clutch shaft 2100, so that the first clutch shaft 2100 can rotate in the first direction.

[0062] In conjunction with the accompanying drawings, a first clamping area 2104 is provided at the end of the first toggle portion 2101 extending out of the first avoidance area 3100. The first clamping area 2104 is concavely formed. When the second locking structure 2404 is clamped with the first clutch shaft 2100, the second locking structure 2404 is partially located in the first clamping area 2104. Further, the second locking structure 2404 has a spherical end, so that the second locking structure 2404 can be smoothly clamped to the first clamping area 2104 or separated from the first clamping area 2104. Specifically, the second locking structure 2404 is set to a spherical structure or a cylindrical structure with a spherical end. In some examples, the second locking structure 2404 is set to a steel ball.

[0063] It should be noted that the movement of the second locking structure 2404 is realized by a motor. In some examples, the second locking structure 2404 is connected to the output end of the motor, and driven by the motor, the second locking structure 2404 approaches and engages with the first clutch shaft 2100, or the second locking structure 2404 moves away from the first clutch shaft 2100 and releases the engagement with the first clutch shaft 2100. In other examples, a stopper is provided at the output end of the motor, and when driven by the motor, the stopper approaches the first clutch shaft 2100 and abuts against the second locking structure 2404, so that the second locking structure 2404 remains engaged with the first clutch shaft 2100, or the stopper moves away from the first clutch shaft 2100, so that a movable space for the second locking structure 2404 is formed between the stopper and the first clutch shaft 2100, and when the first clutch shaft 2100 rotates along the first direction, the side wall of the first engaging area 2104 can push out the second locking structure 2404, thereby releasing the engagement of the second locking structure 2404 with the first clutch shaft 2100.

[0064] Furthermore, when the locking linkage structure 3000 drives the first clutch shaft 2100 to return to the first locking position, the second locking structure 2404 is re-engaged with the first clutch shaft 2100, so that the first clutch shaft 2100 can be re-fixed in the first locking position.

[0065] As an embodiment, the locking clutch assembly includes a first elastic member 2401, one end of the first elastic member 2401 is connected to the first clutch shaft 2100, and the other end of the first elastic member 2401 is fixedly disposed in the lock housing. The first elastic member 2401 is used to drive the first clutch shaft 2100 to rotate along the first direction.

[0066] Specifically, when the lock core mechanism is locked and the first clutch shaft 2100 is in the first locking position, the first elastic member 2401 is in a stretched state, and the first elastic member 2401 has a tensile elastic potential energy. After the second locking structure 2404 releases the clamping of the first clutch shaft 2100, under the action of the first elastic member 2401, the first clutch shaft 2100 can rotate in the first direction, so that the first clutch shaft 2100 pushes the second clutch shaft 2200 to move in the second direction. It can be understood that by using the first elastic member 2401 in conjunction with the second locking structure 2404, the first clutch shaft 2100 can automatically rotate in the first direction.

[0067] In some examples, the first elastic member 2401 is configured as a tension spring.

[0068] As an embodiment, a rotary push structure 2102 is disposed in the first clutch shaft 2100, and the rotary push structure 2102 is located outside the first end of the lock core shaft 1100. When the first clutch shaft 2100 rotates, the first clutch shaft 2100 pushes the second clutch shaft 2200 to move along the second direction through the rotary push structure 2102.

[0069] Specifically, the rotary push structure 2102 has a rotary push inclined surface, and the outer side of the second clutch shaft 2200 is provided with a second sliding portion 2201 protruding from the outer side of the lock core shaft 1100, the second sliding portion 2201 is close to the first end of the second clutch shaft 2200, and the rotary push inclined surface abuts against the side surface of the second sliding portion 2201. When the first clutch shaft 2100 is in the first locking position, and when the second clutch shaft 2200 is in the second locking position, the second sliding portion 2201 is located in the recessed area 2103 formed by the rotary push inclined surface on the rotary push structure 2102, and when the first clutch shaft 2100 and the rotary push structure 2102 rotate in the first direction, the rotary push inclined surface pushes the second sliding portion 2201, so that the second clutch shaft 2200 moves in the second direction.

[0070] In conjunction with the accompanying drawings, the rotary push structure 2102 is arranged around the outer side of the lock core shaft 1100, and the rotary push inclined surface forms a V-shaped recessed area 2103 on the end surface of the rotary push structure 2102. Further, the end surface of the rotary push structure 2102 has a stop plane 2105. After the rotary push structure 2102 rotates and pushes the second clutch shaft 2200, the second sliding portion 2201 of the second clutch shaft 2200 is located at the stop plane 2105, thereby keeping the second clutch shaft 2200 in the second unlocking position.

[0071] Further, at least two second sliding parts 2201 are provided, and the second sliding parts 2201 are equally spaced along the circumference of the outer peripheral side wall of the second clutch shaft 2200. In conjunction with the drawings, two second sliding parts 2201 are provided, and a round rod penetrates the second clutch shaft 2200 along the radial direction of the second clutch shaft 2200, and both ends of the round rod protrude from the outer peripheral side wall of the second clutch shaft 2200, thereby forming two second sliding parts 2201, and accordingly, the rotary pushing structure 2102 has two oppositely located recessed areas 2103 for pushing the two second sliding parts 2201 respectively.

[0072] It can be understood that a first slide groove 1102 is provided on the side wall of the lock core shaft 1100 near the first end, the first slide groove 1102 penetrates the side wall of the lock core shaft 1100, the first slide groove 1102 is arranged parallel to the second direction, and the second sliding portion 2201 can move along the first slide groove 1102. Specifically, when the second clutch shaft 2200 reciprocates along the axial direction in the lock core shaft 1100, the second sliding portion 2201 moves along the first slide groove 1102.

[0073] In conjunction with the accompanying drawings, the side walls of the lock core shaft 1100 are respectively provided with first sliding grooves 1102 at relative positions, the second sliding portion 2201 extends from the first sliding groove 1102, and the second sliding portion 2201 protrudes from the outer peripheral side wall of the lock core shaft 1100, so that the side surface of the second sliding portion 2201 can abut against the rotary pushing structure 2102, so that the first clutch shaft 2100 can push the second clutch shaft 2200.

[0074] Furthermore, the diameter of the second sliding portion 2201 is equal to or slightly smaller than the width of the first sliding groove 1102. When the lock core shaft 1100 and the lock tongue 1300 are rotated in the opposite direction to the first direction to unlock, the side wall of the first sliding groove 1102 abuts against the second sliding portion 2201 to drive the second clutch shaft 2200 to rotate synchronously in the opposite direction to the first direction.

[0075] In this case, the lock core shaft 1100 can drive the second clutch shaft 2200 to rotate synchronously. When the lock core shaft 1100 drives the lock tongue 1300 to rotate along the first direction and re-locks the manhole cover locking device, the second clutch shaft 2200 rotates with the lock core shaft 1100, and the second sliding part 2201 rotates along the first direction to a position deviating from the stop plane 2105, and the second sliding part 2201 is axially located at a position corresponding to the concave area 2103 formed by the rotating push inclined surface. At this time, if the second clutch shaft 2200 moves in the opposite direction of the second direction, the second clutch shaft 2200 is reset from the second unlocking position to the second locking position, and accordingly, the second sliding part 2201 moves to the concave area 2103 formed by the rotating push inclined surface.

[0076] As an embodiment, the locking clutch assembly includes a second elastic member 2402, which is disposed at one end of the second clutch shaft 2200, the second elastic member 2402 is located at the second end of the second clutch shaft 2200, and the second elastic member 2402 is close to the second end of the lock cylinder shaft 1100. When the second clutch shaft 2200 is in the second unlocking position, the second elastic member 2402 is compressed and deformed, and the second elastic member 2402 has compression elastic potential energy.

[0077] It is understandable that if the first locking structure 1200 releases the clamping of the second clutch shaft 2200 , the second clutch shaft 2200 can move in the opposite direction of the second direction under the action of the second elastic member 2402 , so that the second clutch shaft 2200 is reset to the second locking position.

[0078] In conjunction with the accompanying drawings, the second end of the lock core shaft 1100 is provided with a lock core cover 1103, and the two ends of the second elastic member 2402 are respectively connected to the inner side of the lock core cover 1103 and the second clutch shaft 2200. In some examples, the second elastic member 2402 is configured as a spring. The second elastic member 2402 is sleeved on the second end of the second clutch shaft 2200, or the second end of the second clutch shaft 2200 has a cylindrical cavity, and the end of the second elastic member 2402 is disposed in the cylindrical cavity.

[0079] As an implementation mode, the inner peripheral side wall of the third clutch shaft 2300 is provided with a third clamping area 2301, and the third clamping area 2301 is recessed and formed on the inner peripheral side wall of the third clutch shaft 2300. When the first locking structure 1200 is located at the first clamping position, the first locking structure 1200 is partially located in the first through hole 1101 and partially located in the third clamping area 2301, thereby realizing the clamping between the first locking structure 1200 and the third clutch shaft 2300.

[0080] Furthermore, the third clamping area 2301 is arranged in a ring shape on the inner peripheral side wall of the third clutch shaft 2300 to form an annular clamping groove.

[0081] In some examples, the third clutch shaft 2300 is connected to the locking linkage structure 3000, and when the locking linkage structure 3000 rotates synchronously with the lock tongue 1300 to unlock, the locking linkage structure 3000 drives the third clutch shaft 2300 to rotate synchronously. In this case, the third clamping area 2301 is set as an annular clamping groove, which can prevent the first locking structure 1200 from preventing the third clutch shaft 2300 from rotating, so that the third clutch shaft 2300 rotates relative to the lock core shaft 1100.

[0082] In conjunction with the accompanying drawings, a second slide groove 3200 is provided on the side wall of the second end of the locking linkage structure 3000, the second slide groove 3200 penetrates the side wall of the locking linkage structure 3000, the second slide groove 3200 is arranged parallel to the second direction, and a third sliding portion 2302 is provided on the outer side of the third clutch shaft 2300, the third sliding portion 2302 is located in the second slide groove 3200, and when the third clutch shaft 2300 reciprocates along the axial direction of the lock core shaft 1100, the third sliding portion 2302 moves along the second slide groove 3200. Further, when the locking linkage structure 3000 rotates, the inner side wall of the second slide groove 3200 abuts against the side of the third sliding portion 2302, and the third clutch shaft 2300 can be driven to rotate synchronously through the third sliding portion 2302.

[0083] As an embodiment, the locking clutch assembly includes a third elastic member 2403, which is disposed in the locking linkage structure 3000, and the two ends of the third elastic member 2403 respectively abut against the locking linkage structure 3000 and the third clutch shaft 2300. When the third clutch shaft 2300 is pressed and moved to the third unlocking position, the third elastic member 2403 is compressed and deformed, and the third elastic member 2403 has compression elastic potential energy.

[0084] After the manhole cover locking device completes locking and the unlocking mechanism is pulled out from the lock core mechanism, the third clutch shaft 2300 can move along the first direction under the action of the third elastic member 2403, so that the third clutch shaft 2300 moves from the third unlocking position to the third locking position. In this case, the third clamping area 2301 moves to a position corresponding to the first through hole 1101, and the second clutch shaft 2200 moves in the opposite direction of the second direction under the action of the second elastic member 2402 and pushes the first locking structure 1200 from the first avoidance position to the first clamping position, so that the first locking structure 1200 is clamped with the third clutch shaft 2300.

[0085] As an embodiment, the outer peripheral side wall of the second clutch shaft 2200 is provided with a second avoidance area 2202, and the second avoidance area 2202 is recessed and formed on the outer peripheral side wall of the second clutch shaft 2200. When the first locking structure 1200 is located at the first avoidance position, the first locking structure 1200 is partially located in the first through hole 1101 and partially located in the second avoidance area 2202, thereby achieving the clamping connection between the first locking structure 1200 and the second clutch shaft 2200.

[0086] Furthermore, the second avoidance area 2202 is arranged in a ring shape on the outer peripheral side wall of the second clutch shaft 2200 to form an annular clamping groove.

[0087] As an embodiment, the first locking structure 1200 has a spherical end portion, so that the first locking structure 1200 can be smoothly engaged with the third engaging area 2301 or the second avoidance area 2202 , and can be smoothly separated from the third engaging area 2301 or the second avoidance area 2202 .

[0088] Specifically, the first locking structure 1200 is configured as a spherical structure or a cylindrical structure with a spherical end. In some examples, the second locking structure 2404 is configured as a steel ball.

[0089] The unlocking method of the present application is described in detail below in conjunction with specific embodiments. It should be noted that the following description is only for illustrative purposes and is not a specific limitation to the present application.

[0090] The present application relates to an unlocking method, which is implemented based on the above-mentioned lock core mechanism.

[0091] The unlocking method includes the following working process.

[0092] The first clutch shaft 2100 rotates along the first direction starting from the first locking position, and the first clutch shaft 2100 pushes the second clutch shaft 2200 to move along the second direction.

[0093] The second clutch shaft 2200 moves from the second locking position to the second unlocking position, and the third clutch shaft 2300 moves to the third unlocking position in the opposite direction of the second direction. At the same time, the inner wall of the third clutch shaft 2300 pushes the first locking structure 1200 to the first avoidance position, and the first locking structure 1200 is engaged with the second clutch shaft 2200.

[0094] The second end of the lock core shaft 1100 is exposed at the end surface of the third clutch shaft 2300 . The lock core shaft 1100 is rotated in the opposite direction to the first direction, and the lock core shaft 1100 drives the lock tongue 1300 to rotate and unlock.

[0095] In some embodiments, when initially locked, the first clutch shaft 2100 is engaged with the second locking structure 2404 to achieve fixation in the first locking position. Further, when unlocked, after the second locking structure 2404 is separated from the first clutch shaft 2100, under the action of the first elastic member 2401, the first clutch shaft 2100 rotates in the first direction to move the first clutch shaft 2100 away from the first locking position.

[0096] In some embodiments, when unlocking, the lock tongue 1300 drives the first clutch shaft 2100 to rotate in the opposite direction of the first direction through the locking linkage structure, so that the first clutch shaft 2100 returns to the first locking position. Further, the second locking structure 2404 is engaged with the first clutch shaft 2100, so that the first clutch shaft 2100 is fixed in the first locking position.

[0097] It can be understood that when re-locking, the lock core shaft 1100 and the lock tongue 1300 rotate in the first direction, the unlocking mechanism is pulled out, and the third clutch shaft 2300 moves in the second direction to the third locking position; the lock core shaft 1100 drives the second clutch shaft 2200 to rotate, the second sliding portion 2201 is staggered with the stop plane 2105, and under the action of the second elastic member 2402, the second clutch shaft 2200 moves in the opposite direction of the second direction to the second locking position, and accordingly, the outer wall of the second clutch shaft 2200 pushes the first locking structure 1200 from the first avoidance position to the first locking position, and the first locking structure 1200 is engaged with the third clutch shaft 2300.

[0098] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

[0100] In the description of this application, if "," appears in the patent name, it means an "and" relationship, not an "or" relationship. For example, if the patent name is "a kind of A, B", it means that the content required to be protected by this application is: the technical solution with the subject name A and the technical solution with the subject name B.

Claims

1. A lock core mechanism, characterized in that: include A lock core assembly, the lock core assembly comprising a lock core shaft (1100) and a first locking structure (1200), the lock core shaft (1100) being provided with a hollow inner cavity along its own axial direction, the side wall of the lock core shaft (1100) being provided with a first through hole (1101), the first locking structure (1200) being movably arranged in the first through hole (1101), and the first locking structure (1200) being capable of moving outward to a first engaging position or moving inward to a first avoiding position; A lock tongue (1300), wherein the lock tongue (1300) is arranged at a first end of the lock core shaft (1100), and the lock core shaft (1100) drives the lock tongue (1300) to rotate; A locking clutch assembly, the locking clutch assembly comprising a first clutch shaft (2100), a second clutch shaft (2200) and a third clutch shaft (2300), the first clutch shaft (2100) being sleeved on the outer side of the first end of the lock core shaft (1100), and the first clutch shaft (2100) and the lock core shaft (1100) being capable of relative rotation, the second clutch shaft (2200) being arranged in the inner cavity of the lock core shaft (1100), and the second clutch shaft (2200) being capable of reciprocating along the axial direction of the lock core shaft (1100), and the third clutch shaft (2300) being sleeved on the outer side of the second end of the lock core shaft (1100), and the third clutch shaft (2300) being capable of reciprocating along the axial direction of the lock core shaft (1100); Wherein, when locked, the first clutch shaft (2100) is located at the first locking position, the first locking structure (1200) is in the first engaging position and engaged with the third clutch shaft (2300) to prevent the third clutch shaft (2300) from moving axially along the lock core shaft (1100); when unlocked, the first clutch shaft (2100) rotates along the first direction and pushes the second clutch shaft (2200) to move along the second direction parallel to the first end to the second end of the lock core shaft (1100) to provide the first avoidance position for the first locking structure (1200), and the third clutch shaft (2300) moves in the opposite direction parallel to the second direction so that the second end of the lock core shaft (1100) protrudes from the end of the third clutch shaft (2300), and applying torque to the second end of the lock core shaft (1100) can rotate the lock core shaft (1100) in the opposite direction of the first direction.

2. The lock core mechanism according to claim 1, characterized in that: The lock core mechanism comprises a locking linkage structure (3000), wherein the locking linkage structure (3000) is sleeved on the outer side of the first clutch shaft (2100), and the locking linkage structure (3000) is connected to the lock tongue (1300), and the side wall of the locking linkage structure (3000) is provided with a first avoidance area (3100), and the first avoidance area (3100) runs through the side wall of the locking linkage structure (3000), and the outer side wall of the first clutch shaft (2100) is provided with a first A toggle portion (2101), wherein the first toggle portion (2101) is located in the first avoidance area (3100); when unlocking, the lock tongue (1300) drives the locking linkage structure (3000) to rotate in a direction opposite to the first direction, and the locking linkage structure (3000) abuts against the first toggle portion (2101) through the side wall of the first avoidance area (3100), so as to drive the first clutch shaft (2100) to rotate synchronously in a direction opposite to the first direction to the first locking position.

3. The lock core mechanism according to claim 2, characterized in that: A rotary push structure (2102) is arranged inside the first clutch shaft (2100), and the rotary push structure (2102) is located on the outer side of the first end of the lock core shaft (1100). The rotary push structure (2102) has a rotary push inclined surface, and the outer side of the second clutch shaft (2200) is provided with a second sliding portion (2201) protruding from the outer side of the lock core shaft (1100); when the first clutch shaft (2100) is in the first locking position, the second sliding portion (2201) is located in a recessed area (2103) formed by the rotary push inclined surface on the rotary push structure (2102); when the first clutch shaft (2100) and the rotary push structure (2102) rotate in a first direction, the rotary push inclined surface pushes the second sliding portion (2201) to move the second clutch shaft (2200) in a second direction.

4. The lock core mechanism according to claim 3, characterized in that: A first slide groove (1102) is provided on the side wall of the lock core shaft (1100) near the first end, and the first slide groove (1102) passes through the side wall of the lock core shaft (1100). The first slide groove (1102) is arranged parallel to the second direction, and the second sliding part (2201) extends from the first slide groove (1102), and the second sliding part (2201) can move along the first slide groove (1102).

5. The lock core mechanism according to claim 1, characterized in that: The inner peripheral side wall of the third clutch shaft (2300) is provided with a third clamping area (2301); when the first locking structure (1200) is located at the first clamping position, the first locking structure (1200) is partially located in the first through hole (1101) and partially located in the third clamping area (2301); the outer peripheral side wall of the second clutch shaft (2200) is provided with a second avoidance area (2202); when the first locking structure (1200) is located at the first avoidance position, the first locking structure (1200) is partially located in the first through hole (1101) and partially located in the second avoidance area (2202).

6. The lock core mechanism according to any one of claims 1 to 5, characterized in that: The locking clutch assembly comprises a first elastic member (2401), one end of the first elastic member (2401) is connected to the first clutch shaft (2100), and under the action of the first elastic member (2401), the first clutch shaft (2100) can rotate in a first direction, so that the first clutch shaft (2100) pushes the second clutch shaft (2200) to move in a second direction.

7. The lock core mechanism according to any one of claims 1 to 5, characterized in that: The locking clutch assembly includes a second elastic member (2402), and the second elastic member (2402) is arranged at one end of the second clutch shaft (2200), and the second elastic member (2402) is close to the second end of the lock core shaft (1100); under the action of the second elastic member (2402), the second clutch shaft (2200) can move in the opposite direction of the second direction.

8. The lock core mechanism according to any one of claims 2 to 4, characterized in that: The locking clutch assembly comprises a third elastic member (2403), wherein the third elastic member (2403) is arranged in the locking linkage structure (3000), and two ends of the third elastic member (2403) respectively abut against the locking linkage structure (3000) and the third clutch shaft (2300); under the action of the third elastic member (2403), the third clutch shaft (2300) can move along the first direction.

9. A method for unlocking, characterized in that: The unlocking method is implemented based on the lock core mechanism according to any one of claims 1 to 8, and the unlocking method includes The first clutch shaft (2100) rotates in a first direction starting from the first locking position, and the first clutch shaft (2100) pushes the second clutch shaft (2200) to move in a second direction; The second clutch shaft (2200) moves from the second locking position to the second unlocking position, and the third clutch shaft (2300) moves in a direction opposite to the second direction to the third unlocking position, while the inner side wall of the third clutch shaft (2300) pushes the first locking structure (1200) to the first avoidance position, and the first locking structure (1200) is engaged with the second clutch shaft (2200); The second end of the lock core shaft (1100) is exposed at the end surface of the third clutch shaft (2300), and the lock core shaft (1100) is rotated in a direction opposite to the first direction, so that the lock core shaft (1100) drives the lock tongue (1300) to rotate and unlock.

10. A manhole cover locking device, characterized in that: include The lock cylinder mechanism according to any one of claims 1 to 8; A lock housing, wherein the lock core mechanism is disposed in the lock housing; An unlocking mechanism, wherein the unlocking mechanism is capable of pressing the third clutch shaft (2300) to move in a direction opposite to the second direction, and the unlocking mechanism is engaged with the second end of the lock core shaft (1100).

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