Electric meter box capable of preventing electricity stealing

Abstract

The utility model relates to the technical field of electric meter boxes, in particular to an electricity stealing prevention electric meter box which comprises a box body and a box door, a lock is mounted on the box door, a rotatable lock cylinder is arranged in the lock, an alarm box is arranged in the box body, an alarm is arranged on the alarm box, a pull rod is slidably arranged in the box body in a penetrating mode, and one end, close to the lock, of the pull rod is defined as a front end. The other end is defined as a rear end; a touch switch is arranged on the inner wall of the front end of the alarm box, a pressing plate is arranged in the middle of the pull rod, and a spring is arranged between the pressing plate and the inner wall of the rear end of the box body so that the pressing plate can keep pressing towards the touch switch. A shifting rod is arranged at the inner end of the lock cylinder, the section, perpendicular to the axis, of the shifting rod is of a polygonal structure, an insertion hole capable of being matched with the shifting rod is formed in the front end of the pull rod, a baffle is arranged between the shifting rod and the front end of the pull rod, side lugs are arranged on the two opposite sides of the front end of the pull rod, through holes allowing the pull rod and the side lugs to pass through are formed in the baffle, and after the box door is locked, the side lugs are aligned with the through holes. According to the utility model, false alarm can be avoided when the door is opened normally.

Description

Technical Field

[0001] The utility model relates to an electric meter box and the technical field, in particular to an electric meter box that prevents electricity theft. Background Art

[0002] Traditional electricity meter boxes have no anti-theft facilities, and the boxes are often opened by illegal personnel. On the one hand, this causes economic losses to the power grid. On the other hand, electricity theft is often done by temporary connections, which poses a great safety hazard.

[0003] In order to solve the above technical problems, in the prior art, for example, a patent document with publication number "CN218549206U" discloses an electric meter box with an anti-theft function. When the box door is opened, the action of the spring is used to make the slider press the touch switch of the alarm, so that the alarm sounds, which plays a good anti-theft function. However, the following defects still exist in the patent technical solution: when the box door is opened for maintenance, the slider will still press the touch switch under the action of the spring, causing a false alarm. Utility Model Content

[0004] The utility model aims to provide an anti-electricity theft electric meter box to solve the above-mentioned defects of the prior art.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] An anti-electricity theft meter box comprises a box body and a box door, a lock is installed on the box door, a rotatable lock core is arranged inside the lock, an alarm box is arranged inside the box body, an alarm is arranged on the alarm box, a pull rod is slidably passed through the box body, one end of the pull rod close to the lock is defined as the front end, and the other end is defined as the rear end;

[0007] A touch switch is provided on the inner wall of the front end of the alarm box, a pressure plate is provided in the middle of the pull rod, and a spring is provided between the pressure plate and the inner wall of the rear end of the box body to keep the pressure plate pressed toward the touch switch;

[0008] A lever is provided at the inner end of the lock core, and the cross-section of the lever perpendicular to the axis is a polygonal structure. A socket that can cooperate with the lever is provided at the front end of the pull rod, a baffle is provided between the lever and the front end of the pull rod, and side ears are provided on the two opposite sides of the front end of the pull rod. A through hole is provided on the baffle for the pull rod and the side ears to pass through, and when the door is locked, the side ears are aligned with the through hole.

[0009] Optionally, a limiting groove that can cooperate with the side ear is provided on one side of the baffle plate close to the pull rod, and when the door is unlocked, the side ear is aligned with the limiting groove.

[0010] Optionally, a rotating plate is rotatably provided on the inner wall at the rear end of the alarm box, and the spring is sleeved on the pull rod, with one end abutting against the rotating plate and the other end abutting against the pressure plate.

[0011] Optionally, a stop block is fixedly connected to the rear end of the pull rod.

[0012] Optionally, the stopper is connected to the pull rod via threads or screws.

[0013] Optionally, after the door is locked, a certain gap is left between the front end of the pull rod and the baffle.

[0014] Optionally, a cross section of the lever perpendicular to the axis is a square structure.

[0015] The present invention has at least the following advantages and beneficial effects: in the present invention, since the side ears are aligned with the through holes after the door is locked, and since the cross section of the lever perpendicular to the axis is a polygonal structure, when the key is turned to rotate the lock cylinder to unlock it, the lever will drive the pull rod and the side ears to rotate, making it impossible for them to be aligned with the through holes. Therefore, when the door is unlocked normally, the front end of the pull rod abuts against the baffle, and the pressure plate cannot press the touch switch, i.e., no alarm can be issued; and when the door is pried open by an unlawful person, the lock cylinder does not rotate, the side ears can pass through the through holes, and the pressure plate can press the touch switch under the action of the spring to issue an alarm. It can be seen that compared with the prior art, the alarm is avoided when the door is opened normally, i.e., false alarms are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a front view of an anti-electricity theft meter box provided by the utility model;

[0018] Figure 2 for Figure 1 AA partial cross-sectional view;

[0019] Figure 3 is a schematic diagram of the structure of the pull rod;

[0020] Figure 4 is a schematic diagram of the structure of the baffle;

[0021] Icon: 1-box body, 2-box door, 3-lock, 301-lock cylinder, 4-lever, 5-alarm box, 6-alarm, 7-pull rod, 701-pressure plate, 702-side ear, 8-touch switch, 9-baffle, 901-through hole, 902-limiting groove, 10-turn plate, 11-stopper, 12-spring. DETAILED DESCRIPTION

[0022] refer to Figure 1-2 A meter box for preventing electricity theft includes a box body 1 and a box door 2. A lock 3 is installed on the box door 2. A rotatable lock core 301 is arranged inside the lock 3. The lock 3 adopts conventional technical means in the field. The principle is to open and close by rotation. For example, a lock plate is arranged on the lock core 301, and the box body 1 is provided with a stopper for blocking the lock plate. When the stopper rotates 90° with the lock core 301, the door 2 can be opened.

[0023] An alarm box 5 is provided inside the box body 1, and an alarm 6 is provided on the alarm box 5. The alarm 6 can be set inside or outside the alarm box 5. A pull rod 7 is slidably passed through the inside of the box body 1. The end of the pull rod 7 close to the lock 3 is defined as the front end, and the other end is defined as the rear end; a touch switch 8 is provided on the inner wall of the front end of the alarm box 5. It should be understood that the touch switch 8 is electrically connected to the alarm 6. When the touch switch 8 is pressed, the alarm 6 sends an alarm signal.

[0024] A pressing plate 701 is provided in the middle of the pull rod 7, and a spring 12 is provided between the pressing plate 701 and the inner wall of the rear end of the box body 1, so that the pressing plate 701 maintains a tendency to press against the touch switch 8. It should be understood that when the box door 2 is locked, the spring 12 is in a compressed state. A lever 4 is provided at the inner end of the lock core 301, and the cross section of the lever 4 perpendicular to the axis is a polygonal structure. The front end of the pull rod 7 is provided with a plug hole that can be matched with the lever 4, that is, the cross section of the plug hole perpendicular to the axis is also square. After the lever 4 is matched with the plug hole, the rotation of the lever 4 can drive the pull rod 7 to rotate. Specifically, the cross section of the lever 4 perpendicular to the axis in this embodiment is a square structure. Of course, in other embodiments, the cross section of the lever 4 perpendicular to the axis can also be in other shapes, as long as the lever 4 and the plug hole can be matched to prevent the two from rotating relative to each other.

[0025] A baffle plate 9 is provided between the front ends of the lever 4 and the pull rod 7. Side ears 702 are provided on two opposite sides of the front end of the pull rod 7. A through hole 901 is provided on the baffle plate 9 for the pull rod 7 and the side ears 702 to pass through. When the door 2 is locked, the side ears 702 are aligned with the through hole 901.

[0026] It is worth mentioning that the reference Figure 3-4, because when the door 2 is locked, the side ear 702 is aligned with the through hole 901, and because the cross-section of the lever 4 perpendicular to the axis is a polygonal structure, when the key is turned to rotate the lock core 301 to unlock, the lever 4 will drive the pull rod 7 and the side ear 702 to rotate, making it impossible to align with the through hole 901. Therefore, when the door is unlocked normally, the front end of the pull rod 7 is against the baffle 9, and the pressure plate 701 cannot press the touch switch 8, that is, no alarm can be issued. When the door 2 is pried open by illegal personnel, the lock core 301 does not rotate, the side ear 702 can pass through the through hole 901, and the pressure plate 701 can press the touch switch 8 under the action of the spring 12 to issue an alarm. It can be seen that compared with the prior art, the alarm is avoided when the door 2 is opened normally, that is, false alarm is avoided.

[0027] Since the pull rod 7 rotates when the door 2 is unlocked normally, a certain gap is left between the front end of the pull rod 7 and the baffle 9 after the door 2 is locked to avoid large resistance caused by the pull rod 7 and the baffle 9 when the pull rod 7 rotates due to unlocking.

[0028] Furthermore, in this embodiment, a rotating plate 10 is rotatably provided on the inner wall of the rear end of the alarm box 5. The rotating plate 10 can be specifically connected to the alarm box 5 through a bearing. The spring 12 is sleeved on the pull rod 7, and one end abuts against the rotating plate 10, and the other end abuts against the pressure plate 701. This arrangement can avoid large friction between the spring 12 and the alarm box 5 when the pull rod 7 rotates, thereby preventing the spring 12 from twisting.

[0029] In this embodiment, a limiting groove 902 that can cooperate with the side ear 702 is provided on the side of the baffle 9 close to the pull rod 7, and when the door 2 is unlocked and opened, the side ear 702 is aligned with the limiting groove 902. In this way, when the door 2 is unlocked and opened normally, the side ear 702 will be stuck in the limiting groove 902 under the action of the spring 12, preventing the pull rod 7 from rotating and making it difficult for the lever 4 to be inserted into the socket when the door 2 is locked again.

[0030] In this embodiment, the rear end of the pull rod 7 is fixedly connected with a stopper 11. Furthermore, in order to facilitate installation, the stopper 11 is connected to the pull rod 7 through threads, that is, the stopper 11 is designed in a sleeve shape, the inner wall is provided with an internal thread, and the outer wall of the rear end of the pull rod 7 is provided with an external thread matching therewith; or in some embodiments, the stopper 11 is connected to the pull rod 7 through screws, that is, a connecting hole is provided in the center of the stopper 11, a threaded hole is provided in the center of the rear end of the pull rod 7, and the connecting hole and the threaded hole are connected by screws.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-electricity theft meter box, comprising a box body and a box door, a lock is installed on the box door, a rotatable lock core is arranged inside the lock, an alarm box is arranged inside the box body, and an alarm is arranged on the alarm box, characterized in that: A pull rod is slidably provided inside the box, and one end of the pull rod close to the lock is defined as the front end, and the other end is defined as the rear end; A touch switch is provided on the inner wall of the front end of the alarm box, a pressure plate is provided in the middle of the pull rod, and a spring is provided between the pressure plate and the inner wall of the rear end of the box body to keep the pressure plate pressed toward the touch switch; A lever is provided at the inner end of the lock core, and the cross-section of the lever perpendicular to the axis is a polygonal structure. A socket that can cooperate with the lever is provided at the front end of the pull rod, a baffle is provided between the lever and the front end of the pull rod, and side ears are provided on the two opposite sides of the front end of the pull rod. A through hole is provided on the baffle for the pull rod and the side ears to pass through, and when the door is locked, the side ears are aligned with the through hole.

2. The anti-electricity theft meter box according to claim 1, characterized in that: A limiting groove which can cooperate with the side ear is provided on one side of the baffle plate close to the pull rod, and when the box door is unlocked, the side ear is aligned with the limiting groove.

3. The anti-electricity theft meter box according to claim 1, characterized in that: A rotating plate is rotatably arranged on the inner wall of the rear end of the alarm box. The spring is sleeved on the pull rod, and one end of the spring abuts against the rotating plate, and the other end abuts against the pressing plate.

4. The anti-electricity theft meter box according to any one of claims 1 to 3, characterized in that: The rear end of the pull rod is fixedly connected with a stopper.

5. The anti-electricity theft meter box according to claim 4, characterized in that: The stopper is connected to the pull rod via threads or screws.

6. The anti-electricity theft meter box according to any one of claims 1 to 3, characterized in that: After the box door is locked, a certain gap is left between the front end of the pull rod and the baffle.

7. The anti-electricity theft meter box according to any one of claims 1 to 3, characterized in that: The cross section of the lever perpendicular to the axis is a square structure.

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