Cable well lid lock

Abstract

The utility model discloses a cable well lid lock which comprises a key body and a lock body which are matched with each other, and the bottom face of the key body is of a special-shaped groove structure. The lock body is of a special-shaped protruding structure and comprises a protruding part and a base body part, sliding ways are arranged on the two sides of the surface of the base body part, the protruding part is arranged on the sliding ways, and the protruding part is matched with the special-shaped groove structure; the key body and the lock body are unlocked in a linkage mode through magnetic attraction induction. By applying the lock provided by the utility model, the occurrence of huge property loss or electric shock accidents caused by damage to bottom line communication or cables due to manual or misoperation opening of the underground cable well lid can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable well anti-theft, and in particular provides a cable well cover lock. Background Art

[0002] Cable wells are facilities for underground cables. To ensure safety, they need to be covered and locked. Most existing well covers use conventional slotted clamps that can be inserted and rotated 90° to open. They have poor anti-theft performance and are prone to illegal opening operations, resulting in damage or loss of underground cables, causing communication and power outages, and other huge property losses, or even electric shock accidents.

[0003] Therefore, proposing a cable manhole cover lock with a special-shaped structure to improve the anti-theft performance has become an urgent problem to be solved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a cable manhole cover lock to solve the problem that underground cable manhole covers are easily opened illegally.

[0005] The technical solution provided by this utility model is:

[0006] A cable manhole cover lock comprises a key body and a lock body that match each other;

[0007] The bottom surface of the key body is a special-shaped groove structure; the lock body is a special-shaped protrusion structure, including a protrusion and a base part, and slideways are provided on both sides of the surface of the base part. The protrusion is arranged on the slideway, and the protrusion matches the special-shaped groove structure; the key body and the lock body are linked to unlock and unlock through magnetic induction.

[0008] Preferably, the specific structure of the key body and the lock body being linked to unlock and unlock by magnetic induction includes:

[0009] A first neodymium magnet is built into the lower end of the key body;

[0010] A cylindrical resin upper cavity is embedded in the raised portion;

[0011] The base is provided with a lock rod, a cylindrical resin lower cavity, a lock body spring baffle, a lock body spring, and a lock body spring fixing shaft;

[0012] The lock body spring is sleeved on the lock body spring fixing shaft, and the two ends of the lock body spring fixing shaft are respectively connected to the lock body spring baffle and one end of the lock rod, and the other end of the lock rod extends out of the base portion. The lock rod is provided with a through hole, and the cylindrical resin lower cavity is provided below the through hole and on the bottom surface of the base portion. A second neodymium magnet is placed in the cylindrical resin lower cavity;

[0013] When the lock body spring is in a natural state, the cylindrical resin upper cavity, the through hole and the cylindrical resin lower cavity are connected in the vertical direction;

[0014] When the raised portion of the lock body is correspondingly engaged with the special-shaped groove structure of the key body, the cylindrical resin upper cavity is located below the first neodymium magnet;

[0015] The inner diameters of the cylindrical resin upper cavity, the through hole, and the cylindrical resin lower cavity are greater than the diameter of the second neodymium magnet, and the length of the second neodymium magnet is greater than the distance from the top of the cylindrical resin upper cavity to the bottom of the through hole;

[0016] The special-shaped surfaces of the first neodymium magnet and the second neodymium magnet are arranged opposite to each other.

[0017] Preferably, the special-shaped groove structure is an octagonal groove structure, wherein the two top corners are semicircular grooves; the raised portion is an octagonal raised portion structure, wherein the two top corners are semicircular raised portions; and the two top corners are non-adjacent angles.

[0018] Preferably, the structure in which the first neodymium magnet is built into the lower end of the key body is:

[0019] A groove is embedded in the lower end of the key body, the first neodymium magnet is placed in the groove, and a stainless steel baffle is provided at the bottom end of the groove.

[0020] Preferably, a handle is provided at the upper end of the key body, and the lower end of the handle is a threaded structure, which is screwed into the internal threaded hole at the center of the upper end of the key body through the threaded structure.

[0021] The utility model provides a cable manhole cover lock, which adopts the interlocking function of a special-shaped lock mouth and a magnetic structure at a specific position to achieve dual anti-theft performance, thereby effectively preventing the underground cable manhole cover from being opened manually or by mistake, resulting in the destruction of the bottom line communication or cable, causing huge property losses or electric shock accidents; in addition, the lock provided by the utility model has a simple structure and is easy to modify, and has wide application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of the bottom structure of the key body provided by the utility model;

[0024] Figure 2 A top view of the lock body provided by the utility model;

[0025] Figure 3 A schematic diagram of the overall structure of the cable manhole cover lock provided by the utility model;

[0026] Figure 4This is a schematic diagram of the structure of the two neodymium magnets provided by the utility model after being attracted together;

[0027] Figure 5 This is a structural schematic diagram of the spring provided by the utility model when it is in an extruded state. DETAILED DESCRIPTION

[0028] The present invention will be further explained below in conjunction with specific implementation plans, but the present invention is not limited thereto.

[0029] like Figure 1 As shown in the figure, the utility model provides a cable manhole cover lock, comprising a key body 2 and a lock body 5 that match each other;

[0030] The bottom surface of the key body 2 is a special-shaped groove structure;

[0031] like Figure 2 As shown, the lock body 5 is a special-shaped raised structure, including a raised portion 51 and a base portion 52. Slideways are provided on both sides of the base portion. The raised portion is arranged on the slideways, and the raised portion matches the special-shaped groove structure; the raised portion can slide on the slideways of the base portion.

[0032] The key body 2 and the lock body 5 are linked to unlock and unlock through magnetic induction.

[0033] like Figure 2 As shown, the specific structure of the key body 2 and the lock body 5 unlocking and unlocking by magnetic induction linkage includes:

[0034] A first neodymium magnet 3 is built into the lower end of the key body 2;

[0035] The special-shaped protrusion is embedded with a cylindrical resin upper cavity 7;

[0036] The base is provided with a lock rod 6, a cylindrical resin lower cavity 8, a lock body spring baffle 9, a lock body spring 10, and a lock body spring fixing shaft 11;

[0037] The lock body spring 10 is sleeved on the lock body spring fixing shaft 11, and the two ends of the lock body spring fixing shaft 11 are respectively connected to the lock body spring baffle 9 and one end of the lock rod 6. The other end of the lock rod 6 extends out of the base portion. The lock rod 6 is provided with a through hole. The cylindrical resin lower cavity 8 is provided below the through hole and on the bottom surface of the base portion. The second neodymium magnet 31 is placed in the cylindrical resin lower cavity 8.

[0038] When the lock body spring 10 is in a natural state, the cylindrical resin upper cavity 7, the through hole and the cylindrical resin lower cavity 8 are connected in the vertical direction;

[0039] When the raised portion of the lock body is correspondingly engaged with the special-shaped groove structure of the key body, the cylindrical resin upper cavity 7 is located below the first neodymium magnet 3; at the same time, due to the special-shaped structure of the raised portion and the special-shaped groove of the key body, the lock body and the key body are always matched at the same angle, ensuring the corresponding relationship between the cylindrical resin upper cavity 7 and the first neodymium magnet 3 after engagement.

[0040] The inner diameters of the cylindrical resin upper cavity 7, the through-hole, and the cylindrical resin lower cavity 8 are greater than the diameter of the second neodymium magnet 31, and the length of the second neodymium magnet 31 is greater than the distance from the top of the cylindrical resin upper cavity 7 to the bottom of the through-hole. Under the influence of magnetic force, the second neodymium magnet 31 can move up and down within the cylindrical resin upper cavity 7, the through-hole, and the cylindrical resin lower cavity 8. When the second neodymium magnet 31 rises into the cylindrical resin upper cavity 7, its lower half will remain in the through-hole of the locking rod 6.

[0041] The above structure can be assembled by: screwing the threaded left end of the lock body spring fixing shaft 11 into the lock body spring baffle 9 and tightening it. The center of the lock body spring 10 passes through the lock body spring fixing shaft 11 from right to left until the lock body spring 10 touches the surface of the lock body spring baffle 9. The right end of the lock body spring fixing shaft 11 is threaded and connected to the left end of the lock rod 6. The right end of the lock rod 6 passes through the small hole at the right end of the lock body 5.

[0042] The first neodymium magnet 3 placed in the cylindrical resin lower cavity 8 at the corresponding position can be attracted by the second neodymium magnet 31 at the corresponding position of the key, pass through the locking rod from the cylindrical resin lower cavity 8, and reach the cylindrical resin upper cavity 7, so that the locking rod 6 is linked to achieve the purpose of unlocking and locking.

[0043] Preferably, if Figure 1 As shown, the irregular groove structure is an octagonal groove structure, wherein the two top corners are semicircular grooves; the raised portion is an octagonal raised structure, wherein the two top corners are semicircular raised; the two top corners are not adjacent. The lower end of the key body 2 is an irregular groove key opening, which is an unconventional flat or cross-shaped lock body;

[0044] The structure of the first neodymium magnet 3 built into the lower end of the key body 2 is as follows:

[0045] The lower end of the key body 2 is embedded with a groove, and the first neodymium magnet 3 is placed in the groove. The bottom of the groove is provided with a stainless steel baffle. The stainless steel baffle 4 is strong and durable, rust-proof and corrosion-resistant, and does not absorb magnetism.

[0046] The key body 2 and the lock body can be made of aluminum alloy, which is light, hard, rust-proof and durable, and does not affect magnetic dissipation;

[0047] The first neodymium magnet 3 and the second neodymium magnet 31 are cylindrical, with the N-pole of the first neodymium magnet 3 facing downward and the S-pole of the second neodymium magnet 31 facing upward, or vice versa, that is, the first neodymium magnet 3 and the second neodymium magnet 31 are arranged with opposite polar surfaces facing each other.

[0048] The key body 2 is provided with a handle 1 at the top, with a threaded lower end that screws into the internally threaded hole at the center of the top of the key body 2. The key body 2 can be installed by screwing the M10 threaded lower end of the key handle 1 into the internally threaded hole at the center of the top of the key body 2 and tightening it. A neodymium magnet 3 is placed in a corresponding groove at the bottom of the key body 2, and a stainless steel baffle 4 covers the interior of the bottom of the key body, preventing the neodymium magnet 3 from falling out and providing an aesthetically pleasing appearance.

[0049] Insert the key opening of the special-shaped groove of the key into the corresponding opening of the lock body protrusion, and place the neodymium magnet 3 in the cylindrical resin lower cavity 8 at the corresponding position. It can be attracted by the first neodymium magnet 3 at the corresponding position of the key, pass through the lock rod from the cylindrical resin lower cavity 8, and reach the cylindrical resin upper cavity 7. That is, the neodymium magnet at the corresponding point inside the lock body and the neodymium magnet inside the key body are attracted to each other. Then the neodymium magnet inside the lock core is linked to the lock rod 6. Pull the key horizontally to the left, and the key drives the protruding part of the lock body, the neodymium magnet inside the lock body, and the linked lock rod to move horizontally to the left. When they reach a certain position, the lock rod is retracted to unlock the lock.

[0050] like Figure 4 As shown, neodymium magnets attract each other due to opposite charges. The lock core spring is in a relaxed state. The neodymium magnet in the lock core is attracted by the neodymium magnet built into the key body. The lock core neodymium magnet slides to the upper cavity, and the two magnets are attracted together to link the lock rod structure.

[0051] like Figure 5 As shown, hold the handle and push it horizontally to the left. The key drives the magnet in the lock core, and the magnet drives the lock rod to move left together, compressing the lock core spring, retracting the lock rod, and unlocking is completed.

[0052] The general process of using the above-mentioned lock is as follows: insert the groove part of the key into the corresponding raised part of the lock body. The neodymium magnet inside the lock body 5 is attracted by the magnetic force of the neodymium magnet in the key, and passes through the hole of the lock rod 6 from the cylindrical resin lower cavity 8 into the cylindrical resin upper cavity 7. You can hear the sound of the internal magnet attracting. Then hold the key handle 1 and pull it to the left. The key body 2 drives the neodymium magnet 3, and the lock rod 6 is immediately linked to the left. The lock body spring 10 is compressed and reaches a certain position. The lock rod 6 is retracted and unlocked. Release the handle to the right, the lock body spring 10 recovers, pushes the lock rod 6 out, lifts the key, and the neodymium magnet 3 loses its magnetic attraction. Under the action of gravity, it slides down from the cylindrical resin upper cavity 7 through the lock rod 6 to the cylindrical resin lower cavity 8, and the lock is closed.

[0053] After testing and verification, the staff used the above-mentioned manhole cover key to unlock it on site, and it worked well and the lock body was firm.

[0054] The specific implementation methods of the present invention are written in a progressive manner, emphasizing the differences between the various implementation methods, and similar parts can be referenced to each other.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A cable manhole cover lock, characterized in that: It comprises a key body (2) and a lock body (5) that match each other, The bottom surface of the key body (2) is a special-shaped groove structure; the lock body (5) is a special-shaped protrusion structure, including a protrusion and a base part, and slideways are provided on both sides of the base part surface, and the protrusion is arranged on the slideways, and the protrusion matches the special-shaped groove structure; the key body (2) and the lock body (5) are linked to unlock and unlock through magnetic induction.

2. A cable manhole cover lock according to claim 1, characterized in that: The specific structure of the key body (2) and the lock body (5) being linked to unlock and unlock by magnetic induction includes: A first neodymium magnet (3) is built into the lower end of the key body (2); A cylindrical resin upper cavity (7) is embedded in the raised portion; The base portion is provided with a lock rod (6), a cylindrical resin lower cavity (8), a lock body spring baffle (9), a lock body spring (10), and a lock body spring fixing shaft (11); The lock body spring (10) is sleeved on the lock body spring fixed shaft (11), and the two ends of the lock body spring fixed shaft (11) are respectively connected to the lock body spring baffle (9) and one end of the lock rod (6), and the other end of the lock rod (6) extends out of the base portion. A through hole is provided on the lock rod (6), and the cylindrical resin lower cavity (8) is provided below the through hole and on the bottom surface of the base portion. A second neodymium magnet (31) is placed in the cylindrical resin lower cavity (8); When the lock body spring (10) is in a natural state, the cylindrical resin upper cavity (7), the through hole, and the cylindrical resin lower cavity (8) are connected in the vertical direction; When the raised portion of the lock body is correspondingly buckled with the special-shaped groove structure of the key body, the cylindrical resin upper cavity (7) is located below the first neodymium magnet (3); The inner diameters of the cylindrical resin upper cavity (7), the through hole, and the cylindrical resin lower cavity (8) are greater than the diameter of the second neodymium magnet (31), and the length of the second neodymium magnet (31) is greater than the distance from the top of the cylindrical resin upper cavity (7) to the bottom of the through hole; The special-shaped surfaces of the first neodymium magnet (3) and the second neodymium magnet (31) are arranged opposite to each other.

3. A cable manhole cover lock according to claim 1, characterized in that: The special-shaped groove structure is an octagonal groove structure, wherein the two top corners are semicircular grooves; the raised portion is an octagonal raised portion structure, wherein the two top corners are semicircular raised portions; and the two top corners are non-adjacent angles.

4. A cable manhole cover lock according to claim 2, characterized in that: The structure of the first neodymium magnet (3) built into the lower end of the key body (2) is as follows: A groove is embedded in the lower end of the key body (2), the first neodymium magnet (3) is placed in the groove, and a stainless steel baffle is provided at the bottom end of the groove.

5. The cable manhole cover lock according to claim 1, characterized in that: The upper end of the key body (2) is provided with a handle (1), and the lower end of the handle (1) is a threaded structure, which is screwed into the internal threaded hole at the center of the upper end of the key body (2) through the threaded structure.

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