CN116773883A - Combined ammeter - Google Patents

Abstract

The application discloses a combined ammeter, which belongs to the technical field of ammeter, and comprises at least two ammeter, wherein a connecting component is arranged between the two ammeter, and comprises: the first connector is provided with a jack, the jack is arranged in the first connector, and a conducting strip electrically connected with the cable is arranged in the jack; the second connector, the grafting portion sets up in the second connector, electrode slice and cable electrical connection; a detection assembly, wherein: when the plug-in part moves towards the jack and contacts with the conducting strip, the detection assembly can detect, and the first connector, the second connector and the cable are electrically connected after the detection is completed. When the technical scheme of the application is implemented, the detection assembly is arranged between the first connector and the second connector, and when the first connector is connected with the second connector, whether the first connector is normally connected with the second connector or not is judged by the detection assembly, so that the subsequent overhaul condition caused by the fault of the connection assembly is reduced.

Description

Combined ammeter

Technical Field

The application relates to the technical field of electric meters, in particular to a combined electric meter.

Background

The ammeter is one of basic equipment for collecting power grid data, is commonly used for collecting electric energy data, measuring and transmitting and the like, and the existing ammeter has basically realized intellectualization, and has the intelligent functions of bidirectional multi-rate calculation, user side control, bidirectional data communication of various data transmission modes, electricity larceny prevention and the like besides the metering function of the basic electricity consumption of the traditional ammeter.

The combined ammeter is an intelligent ammeter with a wider application range at present, and can realize the functions of household metering, centralized collection, inter-meter communication and the like by combining and connecting different ammeters through cables, and the combined ammeter can be used for centralized management of a large number of ammeters in the same area, for example, in a rental room or a factory building area, and can be used for managing the whole electricity consumption through the combined ammeter, and also can be used for independently managing a single ammeter.

However, in the process of implementing the technical scheme of the embodiment of the application, the inventor discovers that the above technology has at least the following technical problems: because different ammeter is through cable combination connection, when connecting, if ammeter itself or cable break down by oneself, can lead to the unable normal use of combination ammeter after connecting, connect by force can make the unable normal work of combination ammeter to can lead to the maintenance difficulty.

It is therefore necessary to provide a modular electricity meter that is convenient to service to solve the above problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the problems in the prior art, the technical problems to be solved by the application are as follows: the combined ammeter achieves the effect of convenient overhaul.

The technical scheme adopted for solving the technical problems is as follows: a combination meter comprising at least two meters, two between which a connection assembly is arranged, said connection assembly comprising:

a first connector connected with a cable;

the jack is arranged in the first connector, a bottom surface is arranged in the jack, and a conductive sheet electrically connected with the cable is arranged on the bottom surface;

the second connector is used for being matched with and connected with the first connector;

the plug-in part is arranged in the second connector and is connected with the second connector in a sliding mode;

the electrode plate is arranged in the second connector and is electrically connected with the cable;

the detection assembly is arranged between the first joint and the second joint and is used for detecting when the first joint and the second joint are connected in place;

wherein: when the plug-in part moves towards the jack and contacts with the conducting strip, the detection assembly can detect so as to judge whether the connection state of the first connector and the second connector is normal or not; after the connection is normal, the plug-in part is pressed by the bottom surface of the jack and slides in the second connector to be contacted with the electrode plate, so that the first connector, the second connector and the cable are electrically connected.

When the technical scheme of the application is implemented, the detection assembly is arranged between the first connector and the second connector, and when the first connector is connected with the second connector, whether the first connector is normally connected with the second connector or not is judged by the detection assembly, so that the subsequent overhaul condition caused by the fault of the connection assembly is reduced.

Further, a limiting mechanism is arranged between the first connector and the second connector and used for limiting when detecting that faults occur between the first connector and the second connector.

Further, the limiting mechanism comprises a sliding block, the sliding block is in sliding connection with the first connector, an electromagnetic coil is further arranged in the first connector, one end of the electromagnetic coil is electrically connected with the conducting strip, and the other end of the electromagnetic coil is electrically connected with the detection assembly;

the detection assembly, the conductive sheet and the plug-in connection part form a first loop;

a second spring is arranged between the sliding block and the electromagnetic coil and used for providing elastic force;

when current flows in the first loop, the magnetic coil is electrified to generate magnetic force, so that the sliding block is attracted to slide towards the direction of the electromagnetic coil, and the second spring is compressed in the sliding process; when no current flows through the first loop, the electromagnetic coil is not electrified, so that the electromagnetic coil does not generate magnetic force, and the elastic force generated when the second spring is in a compressed state drives the sliding block to slide in the direction opposite to the electromagnetic coil, so that a barrier between the first joint and the second joint is formed.

Further, a boss is arranged in the second connector, and an accommodating hole is formed in the boss and used for accommodating the plug-in portion.

Further, a limiting part is arranged on the inserting part, and the diameter of the limiting part is larger than that of the accommodating hole.

Further, an elastic device is sleeved on the plug-in part, the elastic device is arranged in the accommodating hole, and the elastic device is used for providing elasticity for the plug-in part.

Further, be provided with first spout on the slider, the bottom of first spout is provided with the second spout, the width of second spout is greater than the width of first spout, and first spout is the slope setting, the incline direction of first spout is along solenoid's direction and increases gradually.

Further, a through hole is formed in the first connector, a limiting rod is arranged in the through hole, a protruding block is arranged at the bottom of the limiting rod, the diameter of the protruding block is larger than that of the through hole, and the protruding block is matched with the bottom surface of the second sliding groove, so that the sliding block is in sliding connection with the limiting rod.

Further, the limiting rod is in threaded connection with the protruding block.

Further, a first clamping groove is formed in the second connector and used for being clamped with the limiting rod, and limiting the sliding block.

The beneficial effects of the application are as follows: according to the combined ammeter provided by the application, the detection assembly is arranged between the first connector and the second connector, and when the first connector is connected with the second connector, whether the first connector is normally connected with the second connector or not is judged by the detection assembly, so that the subsequent overhaul condition caused by the fault of the connection assembly is reduced; simultaneously still be provided with the slider, this slider is connected with solenoid, through with detection component and solenoid electric connection, after solenoid circular telegram, can produce magnetic force attraction slider and remove, make not blockked between first joint and the second joint, when solenoid does not circular telegram, the slider can stretch out by the second spring effect, makes to have between first joint and the second joint and blocks, prevents that first joint and second joint from being close to each other and being connected, prevents to break down after the connection and overhauls, wastes time and energy.

In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic view of a combined electricity meter according to the present application;

fig. 2 is an enlarged schematic view of the connection assembly 4 of fig. 1;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is an enlarged schematic view of the first joint of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the second joint of FIG. 2;

FIG. 6 is another schematic view of the second joint of FIG. 5;

FIG. 7 is an exploded view of the first connector of FIG. 3;

FIG. 8 is an internal schematic view of the first joint of FIG. 3;

FIG. 9 is a schematic side cross-sectional view of a slider;

wherein, each reference sign in the figure:

1. a first electricity meter; 2. a second electricity meter; 3. a slot; 4. a connection assembly; 41. a plug; 42. a cable; 43. a first joint; 44. a second joint; 431. a base; 432. a jack; 433. a collar; 434. a first chute; 435. a through hole; 436. a limit rod; 437. a bump; 438. a second spring; 439. a second chute; 441. a contact pin; 442. a protrusion; 443. a wire; 444. a spring plate; 445. a first spring; 446. an electrode sheet; 447. a first clamping groove; 449. a boss; 450. and a receiving hole.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

Embodiment one:

as shown in fig. 1, the present embodiment provides a combined electric meter, which includes a first electric meter 1 and a second electric meter 2, where the specifications of the first electric meter 1 and the second electric meter 2 are consistent, and the first electric meter 1 and the second electric meter 2 are used for accessing into an ac circuit to perform electricity statistics;

the first ammeter 1 and the second ammeter 2 are provided with slots 3 with the same specification, and the slots 3 are used for carrying out combined connection on the first ammeter 1 and the second ammeter 2 to form a combined ammeter;

the slot 3 is inserted with a connecting component 4, and two electric meters are connected and combined through the connecting component 4;

in actual use, the combined ammeter is often used in scenes with multiple electricity requirements such as a collective building and a factory building, in the traditional ammeter, each ammeter exists in isolation, each ammeter needs to be manually checked during meter reading, time and labor are wasted, two or more meters can be connected together through the connecting component 4, communication equipment is assisted, and remote combined meter reading can be achieved.

As shown in fig. 2 to 3, the connection assembly 4 includes a plug 41, the plug 41 is adapted to the specification of the socket 3, so that the plug 41 is inserted into the socket 3 to be connected, the plug 41 is connected with a cable 42, a first connector 43 and a second connector 44 are provided on the cable 42, the first connector 43 and the second connector 44 can be separated or connected to change the connection state of the first electric meter 1 and the second electric meter 2, and when the first connector 43 and the second connector 44 are in the separated state, the cable 42 is in the open state, and no connection is generated between the first electric meter 1 and the second electric meter 2; when the first connector 43 and the second connector 44 are in a connection state, the cable 42 is in a closed state, and the first ammeter 1 and the second ammeter 2 are connected to form a combined ammeter;

when the ammeter needs to be combined, only the connection state of the first connector 43 and the second connector 44 is required to be controlled, the plug 41 is not required to be frequently plugged and unplugged, the plug 41 is prevented from being damaged and deformed due to the fact that the plug 41 is frequently plugged and unplugged, looseness is caused between the plug 41 and the slot 3, and the connection effect is affected.

As shown in fig. 3 to 4, a base 431 is disposed in the first connector 43, a plurality of insertion holes 432 are disposed in the base 431, the insertion holes 432 are disposed along an axial direction of the base 431, the insertion holes 432 have a bottom surface, a conductive sheet (not shown) is disposed on a side of the insertion holes 432 near the bottom surface, the conductive sheet is electrically connected with the cable 42, and a collar 433 is disposed on the first connector 43, the collar 433 is used for fixing the first connector 43 and the second connector 44;

as shown in fig. 5, a boss 449 is disposed in the second connector 44, the boss 449 is made of an insulating material, a plurality of receiving holes 450 are formed in the boss 449 in a penetrating manner, and a plugging portion is inserted into the receiving holes 450 and is used for being matched with the plug hole 432;

the plugging portion has a pin 441 at the bottom, the pin 441 is made of conductive material, and the specification of the accommodating hole 450 on the boss 449 is matched with the specification of the pin 441, so that the accommodating hole 450 can accommodate the pin 441, and the pin 441 is slidably connected with the accommodating hole 450;

it will be appreciated that when the first connector 43 and the second connector 44 are connected, the pins 441 are aligned with the sockets 432, and when the first connector 43 and the second connector 44 are further connected, the pins 441 are electrically connected to the conductive sheets on the bottom surface of the sockets 432 after the bottom surface of the sockets 432 are in contact with the pins 441, and the pins 441 are driven to further move within the receiving holes 450 by being pressed by the bottom surface of the sockets 432;

in the connection process, in order to determine whether the connection state of the first connector 43 and the second connector 44 is normal, the connection position of the two connectors needs to be detected, so that one end of the contact pin 441, which is close to the bottom surface of the first connector 43, is connected with a wire 443, a detection component (not shown in the figure) is externally connected with the wire 443, one end of the detection component is electrically connected with a conducting plate in the jack 432, the other end of the detection component is electrically connected with a cable connected to the second connector 44, the detection component can detect when the first connector 43 and the second connector 44 are connected in place, and can send out a prompt when the line breaks down, the detection component is a circuit detection device which is common in the art, and can include a lamp alarm and/or a sound alarm, the principle is that whether an electric signal passes through the detection circuit or not, and the voltage of the electric signal is reduced, and by controlling the action of the lamp alarm and/or the sound alarm through a controller, if the connection of the first connector 43 and the second connector 44 is completed, the detection component sends out a prompt when the circuit breaks down, and the circuit is not normally indicated when the detection component sends out a prompt when the circuit description;

in the above process, only the connection condition of the first connector 43 and the second connector 44 is detected, at this time, the first connector 43 and the second connector 44 are not connected with the cable 42, the connection condition between the electric meters is an open circuit, no connection is formed between the electric meters, and in order to realize the combined function of the electric meters, it is also necessary to connect the cable 42 with the first connector 43 and the second connector 44, as shown in fig. 5, an electrode piece 446 matched with the pin 441 is disposed in the direction of the second connector 44 near the wire 443, the electrode piece 446 is electrically connected with the cable 42, the pin 441 is pressed by the bottom surface of the jack 432 in the process of the first connector 43 and the second connector 44 mutually approaching, and the pin 441 is driven to move to a position contacting with the electrode piece 446, after the pin 441 contacts with the electrode piece 446, the pin 441 is electrically connected with the cable 42, and the bottom surface of the jack 432 has a conductive piece connected with the cable 42, and the other end of the pin 441 is electrically connected with the conductive piece, so that the first connector 43 and the second connector 44 are electrically connected with the cable 42.

In this embodiment, by disposing the base 431 in the first connector 43 and disposing the jack 432 on the base 431, disposing the conductive sheet in the jack 432, disposing the boss 449 in the second connector 44, sliding the boss 449 to form the pin 441, the pin 441 is matched with the standard of the jack 432, when the first connector 43 is connected with the second connector 44, the pin 441 extends into the jack 432 and contacts with the conductive sheet, and meanwhile, the pin 441 is connected with the detection component, when the pin 441 is not in contact with the electrode sheet 446, detection can be performed, and prompt is sent out in time after a fault is found.

Embodiment two:

when the connection assembly 4 fails, the first electric meter 1 and the second electric meter 2 are connected respectively, so that the combined electric meter fails and cannot work normally, and in some scenes with a large number of electric meters, such as factory electric meters and group building electric meters, the fault needs to be checked one by one when the fault occurs, which is time-consuming and labor-consuming; meanwhile, the connection mode is mostly manual operation, the manual operation is difficult to grasp the plugging force, the first connector 43 and the second connector 44 are still connected after the fault occurs, the subsequent maintenance is difficult, and therefore a limiting mechanism is required to be arranged, the first connector 43 and the second connector 44 are limited when the fault is detected, the further connection is prevented, and the connection is specific:

as shown in fig. 7, the base 431 has an inner cavity 432, the inner cavity 432 is disposed along an axial direction of the base 431, and a slider 433 is disposed in the inner cavity 432, the slider 433 is slidably connected with the inner cavity 432, so that the slider 433 can slide in the inner cavity 432 to change a position of the slider 433 in the inner cavity 432, and the slider 433 is made of a magnetically conductive material and can be attracted by a magnetic substance;

an electromagnetic coil (not shown) is arranged at the bottom of the inner cavity 432, one end of the electromagnetic coil is electrically connected with the conductive sheet in the jack 432, the other end of the electromagnetic coil is electrically connected with the cable 42, and after the contact pin 441 enters the jack 432 and is connected with the conductive sheet in the jack 432, the electromagnetic coil, the detection component, the conductive sheet and the contact pin 441 form a first loop;

a second spring 438 is further disposed in the inner cavity 432, the second spring 438 is disposed between the slider 433 and the electromagnetic coil, and the second spring 438 is used for providing elasticity to the slider 433;

it will be appreciated that when current is passed through the first circuit, the solenoid is energized to generate magnetic force which attracts the slider 433 to slide along the lumen 432 toward the solenoid and compresses the second spring 438 during sliding; when no current is flowing through the first circuit, the electromagnetic coil is not energized, so that no magnetic force is generated by the electromagnetic coil, and when the second spring 438 is in a compressed state, the generated elastic force drives the slider 433 to slide in a direction opposite to the electromagnetic coil.

In this embodiment, by providing the electromagnetic coil, in the initial stage of connection between the first connector 43 and the second connector 44, the contact pin 441 extends into the insertion hole 432 and contacts with the conductive sheet, if the whole circuit is normally energized, the electromagnetic coil is energized and generates magnetic force, and the magnetic force generated by the electromagnetic coil attracts the slider 433 to slide in the direction of the electromagnetic coil, so that there is no blocking between the first connector 43 and the second connector 44;

when the first connector 43 and the second connector 44 are connected with the cable 42 to form a connection loop, the contact pins 441 extend into the insertion holes 432 and are in contact with the conductive sheets, if the whole first loop is not electrified, which indicates that the connection loop of the connection assembly 4 is faulty, the electromagnetic coil does not generate magnetic force, and meanwhile, under the support of the second spring, the sliding block 433 protrudes out of the inner cavity 432, so that when the first connector 43 and the second connector 44 are connected, resistance is generated when the sliding block 433 protrudes to cause connection, and the resistance can prevent the first connector 43 and the second connector 44 from being directly connected;

embodiment III:

in the above embodiment, the first connector 43 and the second connector 44 are connected with the cable 42 for circuit detection, and after the fault is found, a warning is sent, and the electromagnetic coil is electrified through the first loop to generate magnetic force, so that the attraction slider 433 moves to generate resistance between the first connector 43 and the second connector 44, however, in the practical implementation of the above embodiment, the first connector 43 and the second connector 44 are mainly connected manually, and the connection strength is difficult to grasp by manual connection, and often the connection strength is too much or light, so that the first step test is ignored, and therefore, when the first step detection is not completed, the first connector 43 and the second connector 44 are completely connected, and the fault in the circuit is difficult to detect, and after the connection, the maintenance is easy to cause, so that optimization is required, and the specific:

as shown in fig. 4-5, in order to limit the pin 441, a limit portion 442 is disposed at one end of the pin 441 near the boss 449, in this embodiment, the diameter of the limit portion 442 is larger than the diameter of the accommodating hole 450 on the boss 449, and the insertion hole 432 on the base 431 is no longer matched with the pin 441, but is matched with the limit portion 442;

therefore, in the initial stage of connection between the first connector 43 and the second connector 44, the limiting portion 442 extends into the jack 432, along with connection between the first connector 43 and the second connector 44 and the cable 42, the bottom surface of the jack 432 presses the limiting portion 442 and drives the limiting portion 442 to move towards the direction of the second connector 44, which is close to the electrode piece 446, so as to drive the contact pin 441 to move synchronously, when the limiting portion 442 moves to a position contacting with the boss 449, the diameter size of the limiting portion 442 is larger than the inner diameter size of the accommodating hole 450 on the boss 449, so that the limiting portion 442 cannot move continuously, the contact pin 441 stops moving synchronously, and meanwhile, the contact pin 441 contacts with the electrode piece 446 at the bottom of the second connector 44, so that the cable 42 is electrically connected with the contact pin 441, and two electric meters are completely connected through the first connector and the second connector;

in order to enable the contact pin 441 to be reset after being connected with the electrode piece 446, as shown in fig. 5, an elastic device is sleeved on the contact pin 441, the elastic device is arranged in the accommodating hole 450 and is positioned at one end close to the limiting part 442, the elastic device is compressed in the connecting process of the first connector 43 and the second connector 44, after the contact pin 441 is completely contacted with the electrode piece 446, the compression force of the elastic device is maximum, after the force applied to the contact pin 441 is removed, the elastic device is reset, and then the contact pin 441 is driven to be separated from the electrode piece 446 and return to the initial position;

in this embodiment, the resilient means is a first spring 445.

Embodiment four:

in the above embodiment, by providing the electromagnetic coil, when the connection is normal, the electromagnetic coil is energized and generates magnetic force to attract the slider 433 to move towards the direction where the electromagnetic coil is located, and when the connection is abnormal, the electromagnetic coil is not energized, the slider 433 is supported by the second spring 438 and protrudes out of the inner cavity 432, so that resistance is generated due to the protruding slider 433 when the first connector 43 is connected with the second connector 44, and the first connector 43 is prevented from being directly connected with the second connector 44 when the circuit is in fault, resulting in damage to the electric meter;

in the implementation process of the above embodiment, the elastic force of the second spring 438 cannot be controlled, so that the slider 433 is directly ejected by the second spring 438 at the initial stage of connection between the first connector 43 and the second connector 44, and even the risk of falling occurs, which affects the detection in the subsequent connection process of the first connector 43 and the second connector 44, so that the slider 433 needs to be limited, specifically:

as shown in fig. 7-9, the slider 433 is provided with a first chute 434, the bottom of the first chute 434 is provided with a second chute 439, the width of the second chute 439 is larger than the width of the side surface of the first chute 434, the second chute 439 is inclined, and the inclination direction of the second chute 439 is gradually increased towards the radial outside along the axial direction towards the electromagnetic coil direction;

the base 431 is provided with a through hole 435, and a limiting rod 436 is arranged in the through hole 435, a bump 437 is arranged at the bottom of the limiting rod 436, the bump 437 is positioned in the inner cavity 432, the diameter of the bump 437 is larger than that of the through hole 435, and meanwhile, the bump 437 is matched with the bottom surface of the second chute 439, so that the sliding block 433 and the limiting rod 436 can be in sliding connection through the first chute 434;

in this embodiment, the stop lever 436 is connected with the bump 437 through threads, so as to facilitate the disassembly and assembly of the stop lever 436;

because the bottom surface of the first sliding groove 434 is obliquely arranged, and meanwhile, the protruding block 437 of the limiting rod 436 is arranged in the first sliding groove 434, when the sliding block 433 moves, the limiting rod 436 can be contacted with different positions of the bottom surface of the first sliding groove 434, and in the moving process of the sliding block 433, the obliquely arranged bottom surface can drive the limiting rod 436 to move upwards or downwards;

in order to limit the limiting rod 436, as shown in fig. 6, the second connector 44 is provided with a first clamping groove 447, and the first clamping groove 447 is disposed in a direction close to the connection position of the second connector 44;

when the first connector 43 and the second connector 44 are connected with the cable 42, the contact pins 441 extend into the insertion holes 432 and are in contact with the conductive sheets, if the whole loop is normally electrified, the electromagnetic coil is electrified and generates magnetic force, the magnetic force generated by the electromagnetic coil can attract the sliding block 433 to slide towards the electromagnetic coil and compress the second spring 438, and in the sliding process, the bottom surface of the first sliding groove 434 close to the electromagnetic coil is lower than the other end in height, so that the limiting rod 436 moves downwards and enters the through holes 435, and the limiting rod 436 does not limit, so that the first connector 43 and the second connector 44 can be continuously close to each other and connected;

after connection is completed, the contact pin 441 is in contact with the electrode piece 446, at this time, the whole connection assembly 4 is communicated, a first loop where the electromagnetic coil is located is short-circuited by the contact pin 441, the electromagnetic coil is powered off and loses magnetic force, the second spring 438 in a compressed state is restored, the sliding block 433 is driven to slide in a direction away from the electromagnetic coil, in the sliding process, the bottom surface of the first sliding groove 434 in the direction close to the electromagnetic coil is lower than the other end, so that the limiting rod 436 is acted by the supporting force of the first sliding groove 434 upwards, the extending through hole 435 moves upwards, the extending limiting rod 436 is connected with the first clamping groove 447, so that the sliding block 433 is limited, and the sliding block 433 is prevented from falling due to the elastic force of the second spring 438, and subsequent plugging is affected;

in the connection process of the first connector 43 and the second connector 44 with the cable 42, the contact pins 441 extend into the insertion holes 432 and contact with the conductive sheets, if the whole loop is not electrified, which indicates that the connection assembly 4 fails, the electromagnetic coil does not generate magnetic force, meanwhile, under the support of the second spring 438, the sliding block 433 protrudes out of the inner cavity 432, and because the bottom surface of the first sliding groove 434 far away from the electromagnetic coil direction is higher than the other end, the limiting rod 436 moves upwards and extends out of the through hole 435 to enter the first clamping groove 447, the sliding block 433 is limited, and at the moment, the sliding block 433 can be fixed under the cooperation of the limiting rod 436 and the first clamping groove 447.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a combination ammeter, includes two at least ammeter, two be provided with coupling assembling (4), its characterized in that between the ammeter: the connection assembly (4) comprises:

a first connector (43), wherein the first connector (43) is connected with a cable (42);

a jack (432), wherein the jack (432) is arranged in the first connector (43), the jack (432) is internally provided with a bottom surface, and the bottom surface is provided with a conductive sheet electrically connected with the cable (42);

-a second joint (44), said second joint (44) being adapted to mate with and connect to said first joint (43);

the plug-in part is arranged in the second connector (44), and the plug-in part is connected with the second connector (44) in a sliding mode;

an electrode sheet (446), the electrode sheet (446) being disposed within the second joint (44), the electrode sheet (446) being electrically connected to the cable (42);

the detection assembly is arranged between the first joint (43) and the second joint (44) and is used for detecting when the first joint (43) and the second joint (44) are connected in place;

wherein: when the plug-in part moves towards the jack (432) and contacts with the conductive sheet, the detection assembly can detect to judge whether the connection state of the first connector (43) and the second connector (44) is normal or not; after the connection is normal, the plug-in part is pressed by the bottom surface of the jack (432) and slides in the second connector (44) to be contacted with the electrode sheet (446), so that the first connector (43), the second connector (44) and the cable (42) are electrically connected.

2. A modular electricity meter as in claim 1 wherein: a limiting mechanism is arranged between the first joint (43) and the second joint (44), and the limiting mechanism is used for limiting when faults between the first joint (43) and the second joint (44) are detected.

3. A modular electricity meter as claimed in claim 2, wherein: the limiting mechanism comprises a sliding block (433), the sliding block (433) is in sliding connection with the first joint (43), an electromagnetic coil is further arranged in the first joint (43), one end of the electromagnetic coil is electrically connected with the conducting strip, and the other end of the electromagnetic coil is electrically connected with the detection assembly;

the detection assembly, the conductive sheet and the plug-in connection part form a first loop;

a second spring (438) is arranged between the sliding block (433) and the electromagnetic coil, and the second spring (438) is used for providing elastic force;

wherein, when current flows in the first loop, the electromagnetic coil is electrified to generate magnetic force, so that the sliding block (433) is attracted to slide towards the electromagnetic coil, and the second spring (438) is compressed in the sliding process; when no current flows through the first circuit, the electromagnetic coil is not electrified, so that the electromagnetic coil does not generate magnetic force, and the elastic force generated by the second spring (438) in a compressed state drives the sliding block (433) to slide in the direction opposite to the electromagnetic coil, so that a blocking between the first joint (43) and the second joint (44) is formed.

4. A modular electricity meter as in claim 1 wherein: a boss (449) is arranged in the second joint (44), an accommodating hole (450) is formed in the boss (449), and the accommodating hole (450) is used for accommodating the plug-in portion.

5. A modular electricity meter as in claim 4 wherein: the plug-in connection part is provided with a limiting part (442), and the diameter of the limiting part (442) is larger than that of the accommodating hole (450).

6. A modular electricity meter as in claim 4 wherein: the elastic device is sleeved on the plug-in part and arranged in the accommodating hole (450), and the elastic device is used for providing elasticity for the plug-in part.

7. A modular electricity meter as in claim 3 wherein: be provided with first spout (434) on slider (433), the bottom of first spout (434) is provided with second spout (439), the width of second spout (439) is greater than the width of first spout (434), and first spout (434) are slope setting, the incline direction of first spout (434) is along solenoid's direction increase gradually.

8. A modular electricity meter as in claim 3 wherein: the first connector (43) is provided with a through hole (435), a limiting rod (436) is arranged in the through hole (435), the bottom of the limiting rod (436) is provided with a protruding block (437), the diameter of the protruding block (437) is larger than that of the through hole (435), and the protruding block (437) is matched with the bottom surface of the second chute (439) so that the sliding block (433) is in sliding connection with the limiting rod (436).

9. A modular electricity meter as in claim 8 wherein: the limiting rod (436) is in threaded connection with the protruding block (437).

10. A modular electricity meter as in claim 8 wherein: the second connector (44) is provided with a first clamping groove (447), and the first clamping groove (447) is used for being clamped with the limiting rod (436) and limiting the sliding block (433).