Emergency unlocking components, lock cylinders and manhole covers

Abstract

The present invention discloses an emergency unlocking assembly, a lock core and a manhole cover, comprising a first rotating shaft, a second rotating shaft, a magnetic locking member, a third rotating shaft and a first linkage connecting member, wherein the first rotating shaft is provided with a first mounting hole and a first mounting cavity, the second rotating shaft is axially sleeved in the first rotating shaft, the second rotating shaft is provided with a second mounting hole and a shifting block, the magnetic locking member is movably installed in the first mounting hole and can be partially inserted in the second mounting hole, the third rotating shaft is movably sleeved on the first rotating shaft, the inner wall of the third rotating shaft is provided with a first force-bearing portion, the first linkage connecting member is movably installed on the first rotating shaft, the first end of the first linkage connecting member extends into the first mounting cavity and is located on the rotation path of the shifting block. The magnetic locking member is disengaged from the second mounting hole by the magnetic force of a magnetic key, so that the second rotating shaft can rotate relative to the first rotating shaft, and the first linkage connecting member is pushed by the shifting block to be clamped in the first force-bearing portion, so that the first rotating shaft and the third rotating shaft are linked, thereby realizing emergency unlocking.

Description

Technical Field

[0001] The invention relates to the technical field of locks, and in particular to an emergency unlocking component, a lock core and a manhole cover. Background Art

[0002] In urban engineering construction, in order to facilitate the maintenance of underground pipelines, a wellhead is generally reserved on the ground and a manhole cover is installed at the wellhead. Since metal manhole covers are easy to be stolen, electronic locks are installed at the bottom of existing manhole covers, and the electronic locks are locked or unlocked by wireless remote control motors. However, the electronic locks may not be opened due to power failure, poor signal or damage. Therefore, it is necessary to design an emergency unlocking component on the manhole cover to realize the emergency unlocking function. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an emergency unlocking assembly, a lock core and a manhole cover, which can realize the function of emergency unlocking.

[0004] In the first aspect, an emergency unlocking assembly according to an embodiment of the present invention includes a first rotating shaft, a first mounting hole is provided at a first end of the first rotating shaft, and a first mounting cavity is provided at a second end of the first rotating shaft; a second rotating shaft, axially sleeved in the first rotating shaft, a second mounting hole adapted to the first mounting hole is provided at the first end of the second rotating shaft, and a shift block is installed at the second end of the second rotating shaft; a magnetic locking member, which is movably mounted in the first mounting hole and can be partially inserted in the second mounting hole; a third rotating shaft, a first end of the third rotating shaft is sleeved on an outer wall of the second end of the first rotating shaft, the third rotating shaft can rotate relative to the first rotating shaft, and a first force-bearing portion is provided on an inner wall of the third rotating shaft; a first linkage connecting member, movably mounted on the first rotating shaft, a first end of the first linkage connecting member extends into the first mounting cavity and is located on the rotation path of the shift block, and the second end of the first linkage connecting member can be movably clamped in the first force-bearing portion.

[0005] The emergency unlocking assembly according to the embodiment of the present invention has at least the following beneficial effects: under normal conditions, the magnetic locking member is partially inserted into the second mounting hole to limit the relative rotation between the first rotating shaft and the second rotating shaft; when emergency unlocking is required, the magnetic key is used to disengage the magnetic locking member from the second mounting hole through the action of magnetic force, so that the second rotating shaft can rotate relative to the first rotating shaft, and the first linkage connecting member is pushed to be clamped on the first force-bearing part through the shift block, so that the first rotating shaft and the third rotating shaft are linked to achieve emergency unlocking.

[0006] According to some embodiments of the present invention, there are multiple magnetic locking members, and the magnetism of adjacent magnetic locking members is the same or opposite.

[0007] According to some embodiments of the present invention, the magnetic locking member includes a permanent magnet, a pin and a first spring, the permanent magnet is arranged at an end of the pin, and the first spring abuts against the pin.

[0008] According to some embodiments of the present invention, the first mounting hole is arranged along the axial direction or the radial direction of the first rotating shaft.

[0009] According to some embodiments of the present invention, the first linkage connecting member includes a pushing block, a second spring and a limiting member, the side wall of the first rotating shaft is provided with a third mounting hole, the pushing block, the second spring and the limiting member are all installed in the third mounting hole, the two ends of the second spring are respectively abutted against the pushing block and the limiting member, the first end of the pushing block extends into the first mounting cavity, and the second end of the pushing block can be passed through the limiting member and extend out of the third mounting hole.

[0010] According to some embodiments of the present invention, the pushing block includes a first pushing block, a second pushing block and a third spring, the ends of the first pushing block and the second pushing block are both provided with limiting flanges, and the two ends of the third spring are respectively abutted against the first pushing block and the second pushing block.

[0011] According to some embodiments of the present invention, both the first rotating shaft and the second rotating shaft are stainless steel shafts of grade 304 or above.

[0012] According to some embodiments of the present invention, a first sealing ring is disposed on the second rotating shaft.

[0013] In a second aspect, a lock core according to an embodiment of the present invention includes the above-mentioned emergency unlocking assembly.

[0014] In a third aspect, a manhole cover according to an embodiment of the present invention includes a manhole cover body and an electronic lock, wherein the electronic lock includes the above-mentioned lock core.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic structural diagram of a manhole cover according to an embodiment of the present invention at a first viewing angle;

[0018] Figure 2 for Figure 1 The structure schematic diagram of the manhole cover shown in the second viewing angle;

[0019] Figure 3 for Figure 1 A schematic cross-sectional view of a manhole cover is shown;

[0020] Figure 4 It is a structural schematic diagram of a lock core according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 The internal structure diagram of the lock core is shown;

[0022] Figure 6 for Figure 5 An exploded schematic diagram of the internal structure of the lock cylinder is shown;

[0023] Figure 7 for Figure 5 A top view of the internal structure of the lock cylinder is shown;

[0024] Figure 8 for Figure 7 Schematic diagram of the cross section of AA;

[0025] Fig. 9 for Figure 8 The middle circle shows a partial enlarged view of position A;

[0026] Fig.10 for Figure 5 An exploded schematic diagram of the structure of the first linkage connection member of the internal structure is shown;

[0027] Fig.11 It is a structural schematic diagram of one structure of the first linkage connection member according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which 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 invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have an orientation, be constructed and operated in an orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0032] Please refer to Figure 1 and Figure 2 This embodiment discloses a manhole cover, including a manhole cover body 100 and an electronic lock 200, please refer to Figure 3 and Figure 4 The electronic lock 200 includes a lock core 300, and the lock core 300 includes an emergency unlocking component.

[0033] Please refer to Figure 5 and Figure 6 The emergency unlocking assembly includes a first rotating shaft 310, a second rotating shaft 320, a magnetic locking member 330, a third rotating shaft 340 and a first linkage connecting member 350. The first rotating shaft 310 is a hollow structure. A first mounting hole 311 is provided at a first end of the first rotating shaft 310. The number of the first mounting holes 311 is one or more. It should be noted that the first mounting holes 311 are arranged along the axial direction of the first rotating shaft 310 (such as Figure 6 The embodiment is described by taking the first mounting hole 311 arranged along the axial direction as an example: Please refer to Figure 6 The side wall of the first rotating shaft 310 has a certain thickness. The first mounting hole 311 is a blind hole arranged on the side wall of the first rotating shaft 310. The depth direction of the first mounting hole 311 is the axial direction of the first rotating shaft 310. The number of the first mounting holes 311 is one or more. The second end of the first rotating shaft 310 is provided with a first mounting cavity 312 (see Figure 8), the second rotating shaft 320 is axially sleeved in the first rotating shaft 310, and the second rotating shaft 320 can rotate relative to the first rotating shaft 310. The first end of the second rotating shaft 320 is provided with a second mounting hole (not shown) adapted to the first mounting hole 311. For example, the number, position and depth direction of the second mounting holes correspond to the first mounting hole 311. The second end of the second rotating shaft 320 is installed with a shift block 321. Specifically, the shift block 321 is an eccentric structure and can be locked to the second end of the second rotating shaft 320 by a nut 322. The magnetic locking member 330 is movably installed in the first mounting hole 311 and can be partially inserted in the second mounting hole. The first end of the third rotating shaft 340 is sleeved on the outer wall of the second end of the first rotating shaft 310. The third rotating shaft 340 can rotate relative to the first rotating shaft 310. The second end of the third rotating shaft 340 is connected to a locking mechanism. The rotation of the third rotating shaft 340 can drive the locking structure to lock or unlock. Among them, the locking mechanism is an existing structure, and its structure can refer to Figure 2 The inner wall of the third rotating shaft 340 is provided with a first force-bearing portion 341, and the first linkage connecting member 350 is movably mounted on the first rotating shaft 310. The first end of the first linkage connecting member 350 extends into the first mounting cavity 312 and is located on the rotation path of the shifting block 321, and the second end of the first linkage connecting member 350 can be movably clamped on the first force-bearing portion 341.

[0034] In a normal state, the magnetic locking member 330 is partially inserted into the second mounting hole to limit the relative rotation between the first rotating shaft 310 and the second rotating shaft 320. When emergency unlocking is required, the magnetic locking member 330 is disengaged from the second mounting hole by the magnetic key through the magnetic force, so that the second rotating shaft 320 can rotate relative to the first rotating shaft 310, and the first linkage connector 350 is pushed to be clamped on the first force-bearing part 341 by the shift block 321, so that the first rotating shaft 310 and the third rotating shaft 340 are linked, thereby realizing emergency unlocking. It should be noted that a limiting mechanism can be provided on the first rotating shaft 310 and the second rotating shaft 320 to limit the rotation angle between the first rotating shaft 310 and the second rotating shaft 320. Among them, an example of the limiting mechanism is: a protrusion is provided on the first rotating shaft 310, and an arc-shaped limiting groove is provided on the second rotating shaft 320. After the first rotating shaft 310 and the second rotating shaft 320 are assembled, the protrusion is located in the arc-shaped limiting groove and can move relative to each other in the arc-shaped limiting groove. The arc-shaped limiting groove and the protrusion cooperate to limit the relative rotation angle between the first rotating shaft 310 and the second rotating shaft 320 .

[0035] The number of magnetic locking members 330 is adapted to the first mounting hole 311, wherein when the number of magnetic locking members 330 is multiple, a magnetic array can be formed. In the magnetic array, the magnetism of adjacent magnetic locking members 330 is the same or opposite, and multiple groups of different magnetic passwords can be formed through the yin-yang combination of the magnetism of multiple magnetic locking members 330, which requires a specific magnetic key to unlock, thereby achieving an anti-theft effect, and the more the number of magnetic locking members 330, the more complex the magnetic password, which is conducive to increasing the difficulty of copying the magnetic key, thereby improving the anti-theft effect of the emergency unlocking assembly. Moreover, in this embodiment, the first mounting hole 311 and the second mounting hole are both blind holes, and the magnetic locking member 330 can be hidden, which is conducive to improving the concealment of the magnetic locking member 330 and the aesthetic appearance.

[0036] Please continue to refer to Figure 6 In this embodiment, the magnetic locking member 330 includes a permanent magnet 331, a pin 332 and a first spring 333. The permanent magnet 331, the pin 332 and the first spring 333 are all installed in the first mounting hole 311. The permanent magnet 331 is arranged at the end of the pin 332, and the first spring 333 abuts against the pin 332. Under normal conditions, the pin 332 is partially inserted into the second mounting hole under the elastic force of the first spring 333. When the magnetic key is used to unlock, the permanent magnet 331 pushes the pin 332 to compress the spring to disengage from the second mounting hole under the magnetic force of the magnetic key, so that the first rotating shaft 310 and the second rotating shaft 320 can rotate relative to each other, thereby unlocking the door. It should be noted that, depending on the different magnetic strengths of the permanent magnet 331, the permanent magnet 331 can be arranged at one end of the pin 332 close to the second mounting hole, or the permanent magnet 331 can be arranged at one end of the pin 332 away from the second mounting hole.

[0037] Please refer to Figure 6 , Figure 7 , Figure 8 and Fig. 9The first linkage connecting member 350 includes a pushing block, a second spring 352 and a limiting member 353. The side wall of the first rotating shaft 310 is provided with a third mounting hole 313. The pushing block, the second spring 352 and the limiting member 353 are all installed in the third mounting hole 313. The structure of the limiting member 353 can be a circular ring with a through hole, and stripes are provided on the outer wall of the circular ring. The circular ring is clamped with the side wall of the first rotating shaft 310, and the limiting member 353 is used to limit the pushing block and the spring in the third mounting hole 313. The two ends of the second spring 352 are respectively in contact with the push block and the stopper 353. In the normal state, under the elastic force of the second spring 352, the first end of the push block extends into the first mounting cavity 312. When emergency unlocking is required, the second shaft 320 rotates and drives the shift block 321 to rotate. Since the shift block 321 is an eccentric structure, when the shift block 321 rotates to a preset position, the shift block 321 abuts against the push block and pushes the push block toward the third mounting hole 313, and the push block compresses the second spring 352. At the same time, the second end of the push block can be inserted into the stopper 353 and extend out of the third mounting hole 313. At this time, when the second shaft 320 is rotated, the second end of the push block abuts against the first force-bearing portion 341 of the third shaft 340 and drives the third shaft 340 to rotate, thereby realizing the linkage between the second shaft 320 and the third shaft 340, and then controlling the locking mechanism to unlock through the third shaft 340.

[0038] Please refer to Fig. 9 and Fig.10 The push block includes a first push block 3511, a second push block 3512 and a third spring 3513. The ends of the first push block 3511 and the second push block 3512 are both provided with a limiting flange 3514. The two ends of the third spring 3513 are respectively in contact with the first push block 3511 and the second push block 3512. The first push block 3511 is installed at one end of the third mounting hole 313 close to the first mounting cavity 312, and the second push block 3512 is installed at one end of the third mounting hole 313 away from the first mounting cavity 312. The third spring 3513 is arranged between the first push block 3511 and the second push block 3512, and can play a buffering role to reduce the impact of the impact force from the shift block 321.

[0039] It should be noted that this embodiment is also provided with an electric unlocking assembly, please refer to Figure 6 , Figure 7 and Figure 8The electric unlocking assembly includes a motor 361, a paddle 362, and a second linkage connection member 363. When electric unlocking is required, the motor 361 pushes the paddle 362, so that the paddle 362 moves the second linkage connection member 363 along the radial direction of the third rotating shaft 340, and connects the first rotating shaft 310 and the third rotating shaft 340. At this time, rotating the first rotating shaft 310 can drive the third rotating shaft 340 to rotate. Among them, the structure of the second linkage connection member 363 is similar to that of the first linkage connection member 350, and will not be repeated in this embodiment.

[0040] Please refer to Fig.11 This embodiment also discloses another structure of the first linkage connector 350, including a rotating plate, a torsion spring and a screw, wherein a notch is provided on the side wall of the first rotating shaft 310, and the rotating plate is rotatably mounted on the first rotating shaft 310 at a position corresponding to the notch by means of a screw, and the first force-bearing portion 341 is arranged on one side of the notch. When emergency unlocking is required, the second rotating shaft 320 rotates to drive the shift block 321 to rotate, and presses the rotating plate toward the first force-bearing portion 341, so that the rotating plate is engaged with the first force-bearing portion 341, thereby linking the first rotating shaft 310 with the third rotating shaft 340, wherein the torsion spring is connected to the rotating plate and plays a resetting role.

[0041] In this embodiment, since the magnetic locking member 330 needs to move in the first mounting hole 311, the first rotating shaft 310 and the second rotating shaft 320 are made of magnetically insulating materials to prevent the magnetic locking member 330 from being adsorbed on the first rotating shaft 310 or the second rotating shaft 320. Considering the performance of the first rotating shaft 310 and the second rotating shaft 320 and the requirements of the working environment, the first rotating shaft 310 and the second rotating shaft 320 are both stainless steel shafts of grade 304 or above, for example, stainless steel shafts of grade 304 or stainless steel shafts of grade 316. The magnetic attraction effect of stainless steel shafts of this grade is poor, which can reduce the interference with the magnetic locking member 330, and the stainless steel shaft has good mechanical strength and anti-corrosion performance, which can meet the performance requirements and the needs of the outdoor working environment.

[0042] Please refer to Figure 6 or Figure 8 In order to prevent the penetration of rainwater, a first sealing ring 323 is provided on the second rotating shaft 320 to prevent rainwater from entering the first installation cavity 312 and avoid water accumulation. Similarly, a second sealing ring 342 is provided on the third rotating shaft 340 .

[0043] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An emergency unlocking assembly, characterized in that: include: A first rotating shaft (310), wherein a first end of the first rotating shaft (310) is provided with a first mounting hole (311), and a second end of the first rotating shaft (310) is provided with a first mounting cavity (312); A second rotating shaft (320) is axially sleeved in the first rotating shaft (310), a second mounting hole matching the first mounting hole (311) is provided at a first end of the second rotating shaft (320), and a shifting block (321) is installed at a second end of the second rotating shaft (320); a magnetic locking member (330), the magnetic locking member (330) being movably mounted in the first mounting hole (311) and being capable of being partially inserted in the second mounting hole; a third rotating shaft (340), wherein a first end of the third rotating shaft (340) is sleeved on an outer wall of a second end of the first rotating shaft (310), the third rotating shaft (340) is capable of rotating relative to the first rotating shaft (310), and a first force-bearing portion (341) is provided on an inner wall of the third rotating shaft (340); A first linkage connection member (350) is movably mounted on the first rotating shaft (310), wherein a first end of the first linkage connection member (350) extends into the first mounting cavity (312) and is located on a rotation path of the shifting block (321), and a second end of the first linkage connection member (350) can be movably clamped on the first force-bearing portion (341); The first linkage connecting member (350) comprises a pushing block, a second spring (352) and a limiting member (353); a third mounting hole (313) is provided on a side wall of the first rotating shaft (310); the pushing block, the second spring (352) and the limiting member (353) are all mounted in the third mounting hole (313); two ends of the second spring (352) are respectively in contact with the pushing block and the limiting member (353); a first end of the pushing block extends into the first mounting cavity (312); a second end of the pushing block can be passed through the limiting member (353) and extend out of the third mounting hole (313); The pushing block comprises a first pushing block (3511), a second pushing block (3512) and a third spring (3513); the ends of the first pushing block (3511) and the second pushing block (3512) are both provided with limiting flanges (3514); and the two ends of the third spring (3513) are respectively in contact with the first pushing block (3511) and the second pushing block (3512).

2. The emergency unlocking assembly according to claim 1, characterized in that: The number of the magnetic locking members (330) is plural, and the magnetism of adjacent magnetic locking members (330) is the same or opposite.

3. The emergency unlocking assembly according to claim 1 or 2, characterized in that: The magnetic locking member (330) comprises a permanent magnet (331), a pin (332) and a first spring (333); the permanent magnet (331) is arranged at the end of the pin (332); and the first spring (333) abuts against the pin (332).

4. The emergency unlocking assembly according to claim 1 or 2, characterized in that: The first mounting hole (311) is arranged along the axial direction or radial direction of the first rotating shaft (310).

5. The emergency unlocking assembly according to claim 1, characterized in that: The first rotating shaft (310) and the second rotating shaft (320) are both stainless steel shafts of grade 304 or above.

6. The emergency unlocking assembly according to claim 1, characterized in that: A first sealing ring (323) is provided on the second rotating shaft (320).

7. A lock core, characterized in that: It comprises the emergency unlocking assembly as claimed in any one of claims 1 to 6.

8. A manhole cover, characterized in that: It comprises a manhole cover body (100) and an electronic lock (200), wherein the electronic lock (200) comprises the lock core according to claim 7.

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