A mechanical unlocking structure for an intelligent manhole cover electronic lock

Abstract

The present invention proposes a mechanical unlocking structure of an intelligent manhole cover electronic lock, which is convenient for unlocking / locking the mechanism during inspection operations. The structure comprises an electronic lock core and an unlocking key. The electronic lock core is provided with a lock core mechanism linked to the inside thereof. The lock core mechanism comprises a lock core seat and a core barrel. The core barrel is placed in the lock core seat, and a lock rod connected to the electronic lock core is provided at the bottom thereof, a countersunk hole close to the side is provided on the core barrel, and a transverse hole connected to the countersunk hole is provided on the side. A movable block, a first magnetic block and a steel ball are provided in the countersunk hole. The middle section of the movable block has an annular groove for accommodating the steel ball, and the lower groove wall of the annular groove is an inclined surface. The first magnetic block is driven to rise by an external magnetic force, and the steel ball is pushed by the edge of the transverse hole to shift from the inside of the annular groove to the transverse hole. A convex column is provided on the top of the lock core seat, and a plurality of vertical grooves are provided on the inner wall thereof. The unlocking key has a groove cooperating with the convex column, and a second magnetic block for attracting the first magnetic block is built in.

Description

Technical Field

[0001] The invention relates to a mechanical unlocking structure of an intelligent manhole cover electronic lock. Background Art

[0002] At present, there are various styles of anti-theft manhole covers on the market, which are similar in structure. They all solve the problem of manhole cover theft from the aspects of manhole cover materials and anti-theft design, but they still cannot effectively prevent the theft of manhole covers, especially the theft of wires in communication wells, and after the manhole cover is lost, it is often impossible to determine the stolen location and repair it in time, which can easily cause safety hazards.

[0003] Chinese patent CN201820850328.6 discloses an electronic lock structure and manhole cover applied to manhole covers, which can realize locking / unlocking by proximal connection with the upper device through the wireless module on the control panel, solve the locking / unlocking problem of the manhole cover, improve the anti-theft performance of the manhole cover, and facilitate the loading and unloading of the manhole cover during inspection and maintenance. However, the structure lacks a mechanism to unlock / lock. In the actual inspection process, it is found that the control panel will fail to unlock / lock due to power shortage, interference or failure, affecting the work efficiency. Summary of the invention

[0004] In order to overcome the problems existing in the prior art, the present invention proposes a mechanical unlocking structure of an intelligent manhole cover electronic lock, which is convenient for unlocking / locking the mechanism during inspection operations. The specific technical contents are as follows:

[0005] A mechanical unlocking structure of an intelligent manhole cover electronic lock, comprising an electronic lock core and an unlocking key, wherein a lock core mechanism linked to the interior of the electronic lock core is provided at the center of the electronic lock core, wherein the lock core mechanism comprises a lock core seat and a core barrel, wherein the core barrel is placed in the lock core seat, and a lock rod connected to the electronic lock core is provided at the bottom thereof, wherein a countersunk hole close to a side surface is provided on the core barrel, and a transverse hole connected to the countersunk hole is provided on the side surface; a movable block, a first magnetic block and a steel ball are provided in the countersunk hole, wherein a middle section of the movable block has an annular groove for accommodating the steel ball, and a lower side groove wall of the annular groove is an inclined surface so that a cross section of the annular groove is wedge-shaped, and the first magnetic block and a steel ball are provided in the countersunk hole. A magnetic block is driven to rise by an external magnetic force, and the steel ball is pushed by the edge of the horizontal hole so that it shifts from the ring groove to the horizontal hole when the movable block rises, so that it partially extends out of the side of the core tube; a convex column is provided on the top of the lock core seat, and a plurality of vertical grooves are provided on its inner wall; the unlocking key has a groove matching with the convex column, and a second magnetic block for attracting the first magnetic block is provided in the unlocking key. Before the steel ball falls into the vertical groove, the unlocking key drives the lock core seat to rotate idly. When the steel ball falls into the vertical groove, the lock core seat drives the core tube to rotate, thereby driving the electronic lock core to unlock or lock.

[0006] In one or more embodiments of the present invention, the first magnetic block is located below the movable block, or is integrally connected to the movable block.

[0007] In one or more embodiments of the present invention, the end surface of the protrusion is polygonal.

[0008] In one or more embodiments of the present invention, the electronic lock core has a chamber for accommodating the lock core seat. The lock core seat is placed in the chamber and has a plurality of first sealing grooves on its side. A first sealing rubber ring is disposed in the first sealing groove.

[0009] In one or more embodiments of the present invention, the lock core seat includes an outer cylinder and an inner cylinder, the inner cylinder is sleeved in the outer cylinder, the top of the inner cylinder is provided with the convex column, the core tube is housed therein, a first limiting groove is provided on the side of the inner cylinder, and the inner cylinder is limited in the outer cylinder by a first limiting screw, and a second limiting groove is provided on the side of the outer cylinder, and the inner cylinder is limited in the cavity by a second limiting screw.

[0010] In one or more embodiments of the present invention, a plurality of second sealing grooves are disposed on the side surface of the inner cylinder, and a second sealing rubber ring is disposed in the second sealing groove.

[0011] In one or more embodiments of the present invention, the bottom of the unlocking key is provided with the groove, inside which are provided a second magnetic block and a lifting mechanism for driving the second magnetic block to move, the lifting mechanism includes a lifting seat for accommodating the second magnetic block, a central rotating shaft for driving the lifting seat, and a password lock body for limiting the movement of the central rotating shaft.

[0012] The beneficial effects of the present invention are: the idling or synchronous rotation of the lock core seat and the core barrel is achieved through the cooperation of the first magnetic block, the second magnetic block, the movable block and the steel ball, thereby realizing the driving of the electronic lock core, solving the unlocking or locking operation when the electrical part fails for some reason; the unique lock core mechanism and unlocking key design of this patent prevent thieves from using conventional unlocking methods to crack, which is safe and effective, and has a clever structure and easy assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the assembly structure of the electronic lock cylinder and the manhole cover.

[0014] Figure 2 It is a schematic diagram of the matching structure of the electronic lock cylinder and the unlocking key.

[0015] Figure 3 It is a schematic diagram of the assembly structure of the electronic lock cylinder and the lock cylinder mechanism.

[0016] Figure 4 Schematic diagram of the exploded structure of the lock core mechanism.

[0017] Figure 5 Schematic diagram of the explosion structure of the electronic lock cylinder and lock cylinder mechanism Figure 2 .

[0018] Figure 6 It is a perspective structural diagram of the core tube.

[0019] Figure 7 It is a structural diagram of the activity block.

[0020] Figure 8 Schematic diagram of the external structure of the inner cylinder.

[0021] Fig. 9 It is a schematic diagram of the cross-sectional structure of the inner cylinder.

[0022] Fig.10 The cross-sectional structure diagram of the assembly of the electronic lock cylinder and the lock cylinder mechanism Figure 1 .

[0023] Fig.11 The cross-sectional structure diagram of the assembly of the electronic lock cylinder and the lock cylinder mechanism Figure 2 .

[0024] Fig.12 for Fig.11 Enlarged view of part A.

[0025] Fig.13 Schematic diagram of the explosion structure that unlocks the key.

[0026] Fig.14 A perspective structural diagram of the unlocking key. DETAILED DESCRIPTION

[0027] Combine the following Figures 1 to 14 , further describe this application scheme:

[0028] A mechanical unlocking structure of an intelligent manhole cover electronic lock comprises an electronic lock core 1 and an unlocking key 2. A lock core mechanism 3 linked to the inside of the electronic lock core 1 is provided at the center of the electronic lock core 1. The lock core mechanism 3 comprises a lock core seat 31 and a core barrel 32. The core barrel 32 is placed in the lock core seat 31. A lock rod 33 connected to the electronic lock core 1 is provided at the bottom thereof. A countersunk hole 34 close to the side is provided on the core barrel, and a transverse hole 35 connected to the countersunk hole 34 is provided on the side. A movable block 36, a first magnetic block 37 and a steel ball 38 are provided in the countersunk hole 34. The middle section of the movable block 36 has an annular groove 361 for accommodating the steel ball 38, and the lower side groove wall 362 of the annular groove 361 is an inclined surface so that the cross section of the annular groove 361 is wedge-shaped. The first magnetic block 37 is located below the movable block 36. The movable block 36 is driven to rise by the external magnetic force, and the steel ball 38 is pushed by the edge of the horizontal hole 35 so that it is displaced from the annular groove 361 to the horizontal hole 35 when the movable block 36 rises, so that it partially extends out of the side of the core tube 32; a convex column 311 is provided on the top of the lock core seat 31, and a plurality of vertical grooves 312 are provided on its inner wall; the end face of the convex column 311 is polygonal, the unlocking key 2 has a groove 21 matched with the convex column 311, and a second magnetic block 22 for attracting the first magnetic block 37 is provided in the unlocking key 2, before the steel ball 38 falls into the vertical groove 312, the unlocking key 2 drives the lock core seat 31 to rotate idly, and when the steel ball 38 falls into the vertical groove 312, the lock core seat 31 drives the core tube 32 to rotate, thereby driving the electronic lock core 1 to unlock or lock.

[0029] Specifically, the electronic lock core 1 has a chamber 11 for accommodating the lock core seat 31 . The lock core seat 31 is placed in the chamber 11 , and a plurality of first sealing grooves 313 are arranged on the side thereof. A first sealing rubber ring 314 is arranged in the first sealing groove 313 .

[0030] The lock core seat 31 includes an outer cylinder 31a and an inner cylinder 31b. The inner cylinder 31b is sleeved in the outer cylinder 31a. The top of the inner cylinder 31b is provided with the protruding column 311, and the core tube 32 is built therein. The side of the inner cylinder 31b is provided with a first limiting groove 315, which is limited in the outer cylinder 31a by a first limiting screw. The side of the outer cylinder 31a is provided with a second limiting groove 316, which is limited in the cavity 11 by a second limiting screw. The side of the inner cylinder 31b is provided with a plurality of second sealing grooves 317, and a second sealing rubber ring 318 is provided in the second sealing groove 317.

[0031] The bottom of the unlocking key 2 is provided with the groove 21, inside which is provided a second magnetic block 22 and a lifting mechanism 23 for driving the second magnetic block 22 to move. The lifting mechanism 23 includes a lifting seat 231 for accommodating the second magnetic block 22, a central shaft 232 for driving the lifting seat 231, and a password lock body 233 for limiting the movement of the central shaft 232. The password lock body 233 is an existing purchased lock body module, and its rotation enables the central shaft 232 to extend downward or retract upward, thereby driving the lifting seat 231 to approach or move away from the groove 21. When the lifting seat 231 moves away from the groove 21 to a certain distance, the second magnetic block 22 is not enough to suck up the first magnetic block 37, thereby preventing non-inspection personnel from picking up the unlocking key 2 to unlock the electronic lock cylinder 1, thus playing a safety role.

[0032] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A mechanical unlocking structure of an intelligent manhole cover electronic lock, comprising an electronic lock cylinder and an unlocking key, characterized in that: The central position of the electronic lock core is provided with a lock core mechanism linked with the interior thereof, the lock core mechanism comprises a lock core seat and a core barrel, the core barrel is placed in the lock core seat, the bottom of the core barrel has a lock rod connected to the electronic lock core, a countersunk hole close to the side is provided on the core barrel, and a transverse hole connected to the countersunk hole is provided on the side; a movable block, a first magnetic block and a steel ball are arranged in the countersunk hole, the middle section of the movable block has an annular groove for accommodating the steel ball, and the lower side groove wall of the annular groove is an inclined surface so that the cross section of the annular groove is wedge-shaped, and the first magnetic block is driven by the external magnetic force to release the movable block. The movable block rises, and the steel ball is pushed by the edge of the horizontal hole so that it shifts from the annular groove to the horizontal hole when the movable block rises, so that it partially extends out of the side of the core tube; a convex column is provided on the top of the lock core seat, and a plurality of vertical grooves are provided on its inner wall; the unlocking key has a groove matching with the convex column, and a second magnetic block for attracting the first magnetic block is provided in the unlocking key. Before the steel ball falls into the vertical groove, the unlocking key drives the lock core seat to rotate idly. When the steel ball falls into the vertical groove, the lock core seat drives the core tube to rotate, thereby driving the electronic lock core to unlock or lock.

2. The mechanical unlocking structure of the smart manhole cover electronic lock according to claim 1 is characterized in that: The first magnetic block is located below the movable block, or is integrally connected with the movable block.

3. The mechanical unlocking structure of the smart manhole cover electronic lock according to claim 1 is characterized in that: The end face of the convex column is polygonal.

4. The mechanical unlocking structure of the smart manhole cover electronic lock according to claim 1 is characterized in that: The electronic lock core has a chamber for accommodating the lock core seat. The lock core seat is placed in the chamber and has a plurality of first sealing grooves on its side. First sealing rubber rings are arranged in the first sealing grooves.

5. The mechanical unlocking structure of the smart manhole cover electronic lock according to claim 4 is characterized in that: The lock core seat includes an outer cylinder and an inner cylinder. The inner cylinder is sleeved in the outer cylinder. The top of the inner cylinder is provided with the convex column, which houses the core cylinder. The side of the inner cylinder is provided with a first limiting groove, which is limited in the outer cylinder by a first limiting screw. The side of the outer cylinder is provided with a second limiting groove, which is limited in the cavity by a second limiting screw.

6. The mechanical unlocking structure of the smart manhole cover electronic lock according to claim 5 is characterized in that: A plurality of second sealing grooves are arranged on the side surface of the inner cylinder, and second sealing rubber rings are arranged in the second sealing grooves.

7. The mechanical unlocking structure of the smart manhole cover electronic lock according to any one of claims 1 to 6, characterized in that: The bottom of the unlocking key is provided with the groove, inside which a second magnetic block and a lifting mechanism for driving the second magnetic block to move are provided, the lifting mechanism includes a lifting seat for accommodating the second magnetic block, a central shaft driving the lifting seat, and a password lock body for limiting the movement of the central shaft.

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