CN112252859B

CN112252859B - Lock and key for meter box

Info

Publication number: CN112252859B
Application number: CN202011365196.6A
Authority: CN
Inventors: 王家栋; 于淼; 金彦多; 全峰涛; 冯峰; 沈照普; 张志罡; 王浩楠; 杨禛
Original assignee: Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Current assignee: Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2022-02-22
Anticipated expiration: 2040-11-28
Also published as: CN112252859A

Abstract

The invention discloses a lock for a meter box, wherein the meter box is provided with the lock, an electric appliance and a moving part are arranged in the lock, the electric appliance drives the moving part to move, when the electric appliance is not electrified, the moving part is positioned between a box body and a box door, when the electric appliance is electrified, the moving part is not positioned between the box body and the box door, a passive circuit is arranged in the lock, and the electric appliance is arranged in the passive circuit.

Description

Lock and key for meter box

Technical Field

The invention relates to the technical field of meter boxes, in particular to a lock and a key for a meter box.

Background

In China, a large number of meter boxes are arranged in each electricity utilization area, in order to prevent electricity theft, a lock is arranged on each meter box, each lock is provided with a key, in order to increase the anti-theft performance of the meter boxes, an electronic lock can be arranged on the meter boxes, and the electronic lock is provided with an induction key. Because the battery is arranged in the electronic lock, the protection capability to rainwater, electric shock and high-temperature firing is poor, most meter boxes are in a state of not being opened for a long time, and when the electricity consumption of the battery is not changed in time, the electronic lock cannot be opened, so that certain difficulty is caused in overhauling and maintaining equipment inside the meter boxes.

Disclosure of Invention

In view of this, the invention aims to provide a lock and a key for a meter box, which solve the problems of the existing intelligent lock that the lock cannot be unlocked due to poor waterproof, electricity-proof and high-temperature-proof performances and the power consumption of an internal power supply.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a table case is with tool to lock, set up the tool to lock on the table case, set up in the tool to lock with electrical apparatus and moving part, with electrical apparatus drive moving part activity, when not switching on with electrical apparatus, the moving part is located and between box and the chamber door, when switching on with electrical apparatus, the moving part does not lie in between box and the chamber door, set up passive circuit in the tool to lock, set up in passive circuit with electrical apparatus.

Further, a single chip microcomputer and a switch are arranged in the passive circuit, a first circuit board is arranged in the lockset, the single chip microcomputer is arranged on the first circuit board, the single chip microcomputer controls the on-off of the switch, and the switch controls the opening and closing of the electric appliance.

Furthermore, the first mounting plate is arranged in the housing, the housing is statically connected to the lockset, and a jack with a downward opening is arranged between the inner wall of the housing and the outer wall of the lockset.

Furthermore, the electric appliance is an electromagnet, a compression spring I is arranged between the electric appliance and the moving part, an inner groove is arranged in the moving part, a clamping block is arranged in the inner groove, a clamping groove matched with the clamping block is arranged on the side wall of the lock, and when the electric appliance is not powered on, the clamping block is not positioned in the clamping groove; when the electric appliance is not powered on, the clamping block is positioned in the clamping groove, and the clamping block and the clamping groove are matched with each other to limit the movable part from moving towards the direction close to the electric appliance.

Furthermore, a power supply is arranged in the key and supplies power to the singlechip and the electric appliance.

Furthermore, a CPU card is arranged in the key, and when codes in the CPU card are matched with codes in the single chip microcomputer, the single chip microcomputer controls the switch to be closed, and the electric appliance is powered on.

Furthermore, a spring leaf is arranged on the inner wall of the housing, and the key is located between the spring leaf and the outer wall of the lockset.

The invention has the beneficial effects that:

the invention provides a lock and a key for a meter box, wherein a passive circuit is arranged in the lock, a power supply is positioned in the key, the passive circuit is switched on after the key is inserted, and the lock is unlocked, so that the problem that the lock cannot be unlocked due to the exhaustion of the power supply in the lock is solved, and the requirements of the lock on water resistance and electricity leakage resistance are greatly reduced.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic view of the lock assembly;

FIG. 3 is a schematic view of the internal structure of FIG. 2;

FIG. 4 is a schematic structural view of the movable member;

FIG. 5 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 6 is a schematic view of the internal structure of FIG. 5;

FIG. 7 is a circuit diagram of the present invention;

FIG. 8 is a schematic structural diagram of a third embodiment of the present invention;

wherein, 1-an electric appliance, 2-a movable part, 3-a switch, 4-a first mounting plate, 5-a pin, 6-a cover, 7-a first compression spring, 8-an inner groove, 9-a clamping block, 10-a clamping groove, 11-a power supply, 12-a joint, 13-an insertion groove, 14-a spring piece, 15-a shell, 16-a fixed plate, 17-a first groove, 18-a sliding groove, 19-a steel wire rope, 20-a sliding plate, 21-a second groove, 22-a second compression spring, 23-a convex block, 24-a first accommodating groove, 25-a second mounting plate, 26-a first sealing plate, 27-a second accommodating groove, 28-a second sealing plate, 29-a clearing hole, 30-a first circuit board, 31-a singlechip and 32-a second circuit board, 33-CPU card.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1-4, which is a first embodiment of the present invention, a lock for meter boxes includes a housing 15 having a rectangular parallelepiped shell-shaped structure, a mounting block is adhered to a side wall of the housing 15, as shown in fig. 1 and 2, the mounting block is mounted on a box door by a bolt, as shown in fig. 3, an internal structure of the lock is provided with an electrical appliance 1 and a moving element 2: the electric appliance 1 is an electromagnet, the electric appliance 1 is bonded on a fixing plate 16 with a round hole, and the fixing plate 16 is bonded on the inner wall of the shell 15; the movable part 2 is a cuboid strip-shaped structure with an arc processed at the right end, a compression spring I7 is arranged between the movable part 2 and the electrical appliance 1, one end of the compression spring I7 is bonded on the fixed plate 16, the other end is bonded at the left end of the movable part 2, and a clearing hole for the movable part 2 to go in and out is processed at the right end of the shell 15; when 1 circular telegram with electrical apparatus, moving part 2 adsorbs on the terminal surface with electrical apparatus 1, compression spring 7 is compressed, moving part 2 enters into in shell 15, this moment is not located between box and the chamber door, the chamber door can be opened, when not circular telegram with electrical apparatus 1, compression spring 7 resumes former length, moving part 2 keeps away from with electrical apparatus 1, moving part 2 right-hand member passes and enters into after the clearance hole and is located a 17 on the table case body, moving part 2 is located between box and the chamber door this moment, the chamber door can not be opened.

In order to strictly limit the moving track of the moving part 2, a sliding groove 18 is adhered to the inner wall of the shell 15;

in order to ensure the stability of the moving part 2 when the moving part 2 is positioned between the box door and the box body, as shown in fig. 4, an L-shaped inner groove 8 is formed in the moving part 2, a clamping block 9 is inserted in the inner groove 8 far away from the electrical appliance 1, a rectangular parallelepiped plate is bonded on the inner wall of the shell 15, a clamping groove 10 matched with the clamping block 9 is processed on the rectangular parallelepiped plate, the clamping block 9 is connected with a sliding plate 20 through an incompressible steel wire rope 19, the sliding plate 20 is positioned in the inner groove 8 close to the electrical appliance 1, two L-shaped plates are integrally formed at two sides close to the opening of the inner groove 8 of the electrical appliance 1, a groove II 21 is formed between the L-shaped plates and the inner groove 8, a compression spring II 22 is bonded between two sides of the sliding plate 20, a convex block 23 is bonded on the sliding plate 20, two sides of the convex block 23 are contacted with the outer side wall of the groove II 21, when the electrical appliance 1 is electrified, and the end face of the convex block 23 is contacted with the right end of the electrical appliance 1, the compression spring II 22 is compressed, and the clamping block 9 enters the inner groove 8, at the moment, the clamping block 9 is not positioned in the clamping groove 10; when the electrical appliance 1 is not electrified and the end face of the convex block 23 is not contacted with the right end of the electrical appliance 1, the compression spring II 22 recovers the original length, the part of the clamping block 9 extends out of the inner groove 8 and enters the clamping groove 10, and the movable part 2 cannot move towards the direction close to the electrical appliance 1 due to the limitation of the clamping groove 10; because the restriction that is located recess 17 on the table case body, moving part 2 also can not be to keeping away from the direction motion with electrical apparatus 1, and moving part 2 is located the stability between chamber door and the box and is strong.

Set up passive circuit in the tool to lock, set up in passive circuit with electrical apparatus 1, still be equipped with singlechip 31 and switch 3 in the passive circuit, singlechip 31 arranges on a circuit board 30, and a circuit board 30 is fixed on mounting panel 4, and switch 3 installs on the 15 inner walls of shell, and singlechip 31 control switch 3's break-make, switch 3 control is with opening and closing of electrical apparatus 1, and the mounting means of mounting panel 4 does: the through hole is punched on the front wall of the shell 15, the housing 6 is bonded in the through hole, the through hole extends out of the front end of the housing 6, the first mounting plate 4 is bonded in the housing 6, the first mounting plate 4 extends out of 6 pins 5, as shown in fig. 3, the pins 5 and the first mounting plate 4 are protected by the housing 6, a jack with an opening facing downwards is formed between the inner wall of the housing 6 and the outer wall of the shell 15, the key is inserted into a gap between the housing 6 and the shell 15 from bottom to top, and the pins 5 and the first circuit board 30 cannot be corroded by rainwater.

Example two

A key for unlocking the lock is structurally shown in figures 5-6, a power supply 11 is arranged in the key, and the installation mode of the power supply 11 is shown in figure 6: the key comprises a first accommodating groove 24, the first accommodating groove 24 is of a cuboid shell-shaped structure with an opening at the right side, the first accommodating groove 24 is closed by a first closing plate 26, and the first closing plate 26 is installed on the first accommodating groove 24 through bolts; bonding holding tank two 27 on the closed plate 26, bonding battery mounting bracket in the holding tank two 27, power 11 are button cell, install a plurality of button cell and realize establishing ties between the button cell on the mounting bracket, beat out the through-hole (not marked in the figure) that can supply the wire to pass on the closed plate 26 that is located in holding tank two 27, holding tank two 27 is sealed by closed plate two 28, closed plate two 28 passes through the bolt and installs on holding tank two 27, closed plate two 28 is fixed button cell together with the battery mounting bracket. A second mounting plate 25 is bonded in the first accommodating groove 24, a second circuit board 32 is fixedly mounted on the second mounting plate 25, a CPU card 33 is arranged on the second circuit board 32, a connector 12 is further mounted in the first

accommodating groove

24, 6 slots 13 for inserting the pins 5 are formed in the

connector

12, 6 clearing holes 29 for inserting the pins 5 and respectively corresponding to the slots 13 are processed on the top surface of the first accommodating groove 24, the pins 5 are connected with the connector 12 after being inserted into the clearing holes 29, and a connection circuit of a passive circuit in the lockset, the power supply 11 and the CPU card 33 is shown in fig. 7.

As shown in fig. 7, the single chip 31 receives the code inputted from the CPU card 33 and compares the code with the password stored in the single chip 31, and if the two are matched with each other, the single chip 31 controls the switch 3 to be closed, the electrical appliance 1 is powered on, and the door of the box can be opened; if the two are not matched, the single chip microcomputer 31 sends out an alarm signal and alarms to the intelligent monitor through the communication line.

EXAMPLE III

Referring to fig. 8, a second embodiment of the present invention is shown, which is different from the first embodiment in that a spring plate 14 is adhesively arranged in the housing 6, and the side of the key, which is not provided with the button cell, is moved up against the housing 15 until the pin 5 is inserted into the slot 13 through the clearance hole 29, at which time the key is pressed against the housing 15 by the spring plate 14.

In the actual working process, the situation that a plurality of meter boxes need to be maintained simultaneously can occur, the meter boxes can be opened in sequence, in the maintenance process, the box door is often closed due to unexpected factors, a key needs to be taken again for unlocking, and the working progress is influenced, so that the sliding block and the clamping block 9 are designed in the first embodiment, the electric appliance 1 also needs to be connected when the door is closed, otherwise, the door cannot be closed, and the situation that the box door is closed randomly after being opened is effectively prevented; but the condition that only need open the chamber door for a short time also can appear in the actual process, under this condition, if do not set up spring leaf 14, need make a round trip to plug and draw the key, it is troublesome to use, adopt behind the third embodiment, the key is pressed tightly on shell 15 by spring leaf 14, and the key can not fall down easily, convenient to use prevents simultaneously that the key from falling down, protects the safety of key.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A lock for a meter box is characterized in that the meter box is provided with the lock, an electric appliance (1) and a moving part (2) are arranged in the lock, the electric appliance (1) drives the moving part (2) to move, when the electric appliance (1) is not powered on, the moving part (2) is positioned between a box body and a box door, when the electric appliance (1) is powered on, the moving part (2) is not positioned between the box body and the box door, a passive circuit is arranged in the lock, the electric appliance (1) is arranged in the passive circuit, the electric appliance (1) is an electromagnet, a compression spring I (7) is arranged between the electric appliance (1) and the moving part (2), an inner groove (8) is arranged in the moving part (2), a clamping block (9) is arranged in the inner groove (8), a clamping groove (10) matched with the clamping block (9) is arranged on the side wall of the lock, when the electric appliance (1) is not powered on, the clamping block (9) is not positioned in the clamping groove (10); when the electric appliance (1) is not powered on, the clamping block (9) is located in the clamping groove (10), and the movable piece (2) is limited by the mutual matching of the clamping block (9) and the clamping groove (10) and cannot move towards the direction close to the electric appliance (1).

2. The lock for the meter box according to claim 1, characterized in that a single chip microcomputer (31) and a switch (3) are arranged in the passive circuit, a first circuit board (30) is arranged in the lock, the first circuit board (30) is fixed on a first mounting plate (4), the single chip microcomputer (31) is arranged on the first circuit board (30), the single chip microcomputer (31) controls on-off of the switch (3), and the switch (3) controls on-off of an electric appliance (1).

3. The lock for the meter box according to claim 2, wherein the first mounting plate (4) is arranged in a housing (6), the housing (6) is statically connected to the lock, and a jack with a downward opening is arranged between the inner wall of the housing (6) and the outer wall of the lock.

4. A key for opening a lock for a meter box according to claim 3, characterized in that a power supply (11) is arranged in the key, and the power supply (11) supplies power to the single chip microcomputer (31) and the electrical appliance (1).

5. A key according to claim 4, characterized in that a CPU card (33) is arranged in the key, when the code in the CPU card (33) is matched with the code in the single chip microcomputer (31), the single chip microcomputer (31) controls the switch (3) to be closed, and the electrical appliance (1) is electrified.

6. A key as claimed in claim 5, characterized in that said housing (6) is provided with a spring plate (14) on its inner wall, said key being located between the spring plate (14) and the outer wall of the lock.