CN209961815U

CN209961815U - Terminal box assembly of electric energy meter

Info

Publication number: CN209961815U
Application number: CN201920149468.5U
Authority: CN
Inventors: 喻臻翔; 魏章波; 王军; 徐杰
Original assignee: Ningbo Sanxing Smart Electric Co Ltd
Current assignee: Ningbo Sanxing Smart Electric Co Ltd
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2020-01-17
Anticipated expiration: 2029-01-25

Abstract

The utility model relates to an end button box subassembly of electric energy meter, including end button box and relay, offer the first holding chamber that is used for holding current wiring end in the end button box, the relay is connected with the current wiring end through the shunt, offer on the end button box and supply the limiting plate to insert the slot of establishing, the slot link up with first holding chamber mutually, have the first spacing portion that restriction current wiring end removed to the relay direction on the limiting plate, be in under the state of first holding intracavity at the current wiring end, first blocking portion offsets at the terminal surface towards relay one side with the current wiring end. Compared with the prior art, the utility model has the advantages of: the condition that the current wiring end removed to the relay direction has been restricted, prevents to appear because the condition of contact failure work of relay that leads to, and the apron structure passes through the difference of dismouting impetus, changes in the dismouting in actual dress table and production, has reduced cost of maintenance, and the practicality is strong.

Description

Terminal box assembly of electric energy meter

Technical Field

The utility model relates to an electric energy meter technical field, concretely relates to terminal box subassembly for electric energy meter.

Background

The terminal box assembly of the current electric energy meter comprises a wiring terminal, a relay and a mutual inductor, wherein the relay is connected with the wiring terminal through a shunt, an interface of the relay is connected with the wiring terminal, and a manganin shunt is connected between one wiring terminal and the relay in series.

For example, in the chinese utility model patent No. CN201721315865.2 (No. CN207318556U), the terminal box assembly of a three-phase electric energy meter includes a terminal box, a relay and transformer assembly, 4 voltage connector assemblies, and a circuit board; the left side and the right side of the terminal box are respectively provided with a clamping hook and 2 positioning columns, the relay and mutual inductor assembly comprises a relay assembly and 3 current mutual inductors, and each current mutual inductor is provided with 2 connecting pins; each current transformer all is connected with the relay subassembly electricity, relay subassembly, each current transformer, each voltage joint subassembly and circuit board all are connected with the terminal button box, and trip, 2 reference columns and each connecting pin all are connected with the circuit board.

If chinese utility model patent "a connection structure for relay and manganin shunt of electric energy meter" that patent number is CN201020266588.2 (the grant bulletin number is CN201773126U) again, this connection structure includes relay, manganin shunt and has the connection terminal of two phase line wiring ends, the relay be equipped with two wiring mouths, two wiring mouths of relay be connected with two phase line wiring ends of connection terminal respectively, establish ties the manganin shunt between one of them phase line wiring end and the wiring mouth of relay. Realized the connection of relay in the above-mentioned patent, there is the clearance between the screw on the wiring end that is connected with the relay usually and the working of plastics around it, uses for a long time or in the transportation, the phenomenon that the wiring end removed to the relay direction can appear to probably produce relay, shunt and the bad condition of wiring end contact, and then lead to the unable work of relay.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the current situation of above-mentioned prior art, a terminal box subassembly of electric energy meter that the wiring end that the restriction is connected with the relay removed is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an end button box subassembly of electric energy meter, includes end button box, relay, electric current wiring end, voltage wiring end and zero line wiring end, offer the first holding chamber that is used for holding electric current wiring end in the end button box, the relay is connected its characterized in that through shunt and electric current wiring end: offer on the end button box and supply the limiting plate to insert the slot of establishing, the slot link up with first holding chamber mutually, have the first spacing portion that restriction current wiring end removed to the relay direction on the limiting plate at least, under the state that current wiring end is in first holding intracavity, first block portion offsets with the terminal surface of current wiring end in one side towards the relay.

The slot is provided with multiple forms, can supply the limiting plate to insert from an end button box side to the opposite side of end button box and establish, also can supply the limiting plate to insert from bottom to top and establish, preferably, the slot sets up in the lower part of end button box, the limiting plate is inserted from bottom to top and is located in this slot. Therefore, interference caused by installation of the terminal button box and the electric energy meter terminal bottom plate is prevented, and meanwhile the limiting plate is convenient to insert.

The limiting plate and the slot can be realized in various forms, and from the viewpoint of simple processing, preferably, a clamping block is arranged on the outer side wall of the limiting plate, correspondingly, a clamping groove matched with the clamping block is arranged on the inner side wall of the slot, and the limiting plate is fixed in the slot through the matching of the clamping block and the clamping groove.

In order to prevent the voltage terminal from moving towards the relay, the limiting plate is provided with a second blocking part which extends upwards and limits the voltage terminal to move towards the relay.

The second stop part is arranged in multiple positions, preferably, a second accommodating cavity for accommodating the voltage terminal is arranged in the terminal button box, the second accommodating cavity is communicated with the slot, the limiting plate is located in the slot, the second stop part is partially located in the second accommodating cavity, and the second stop part is abutted to the end face of the voltage terminal, which faces one side of the relay.

The terminal box is used for a three-phase meter or other three-phase terminals, three groups of terminal groups are arranged in the terminal box, and each group of terminal group comprises two current terminals and a voltage terminal positioned on the upper sides of the two current terminals.

In order to prevent the zero line terminal from moving towards the relay, the limiting plate is further provided with a third blocking part which extends upwards and limits the zero line terminal to move towards the relay. Thus, the phenomenon of poor contact between the neutral wire terminal and the component to be connected is prevented.

For the connecting wire on the zero line terminal to carry on spacingly, the one end of zero line terminal is connected with participating in through the connecting wire, be provided with the convex part that is used for fixing a position the connecting wire on the terminal button box.

In order to reduce the design cost, the convex parts are multiple, wherein at least one convex part is positioned on the upper side of the second accommodating cavity, and a space for the connecting line to pass through is formed between the convex part and the corresponding upper side wall of the second accommodating cavity. Therefore, the second accommodating cavity can be used for accommodating the voltage wiring terminal and can also be used as a limiting part for the downward movement of the connecting wire, so that the wiring is convenient.

In order to prevent the screw on the current terminal in the first accommodating cavity from moving upwards, the terminal box is provided with a cover plate at the upper side of the first accommodating cavity.

The fixed mode of apron and end button box has the multiple, preferably, the relative both sides of apron are provided with the buckle, the apron corresponds the joint of side reason and fixes through buckle and end button box on the end button box. Therefore, the installation is started by applying force from the side edges, the disassembly is started by applying force from the center, and the disassembly is easier in practical application.

Compared with the prior art, the utility model has the advantages of: the limiting plate is arranged on the terminal button of the terminal button box assembly of the electric energy meter, the limiting plate is at least provided with a first limiting part which limits the current wiring end to move towards the relay direction, the first blocking part is abutted against the end face of the current wiring end on one side facing the relay under the condition that the current wiring end is positioned in the first accommodating cavity, the situation that the current wiring end moves towards the relay direction is limited, the situation that the relay cannot work due to poor contact is prevented, and the cover plate structure is easier to disassemble and assemble in actual meter assembling and production through different disassembling and assembling force points; in addition, the terminal button box is provided with a convex part for positioning the connecting wire of the zero line wiring end, so that the connecting wire is prevented from being disordered; the whole structure reduces the maintenance cost, the structural design is more reasonable, and the practicability is strong.

Drawings

Fig. 1 is a partial schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of a connection structure of a relay and a current terminal according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 with the base removed;

FIG. 4 is a schematic view of the structure of FIG. 3 with the connecting wires removed;

FIG. 5 is a schematic view of the structure of FIG. 3 at another angle;

FIG. 6 is a schematic perspective exploded view of FIG. 5;

FIG. 7 is a cross-sectional view of FIG. 5;

FIG. 8 is a cross-sectional view at another angle to FIG. 5;

fig. 9 is a schematic structural view of an end button box according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of FIG. 9 at another angle;

fig. 11 is a schematic structural diagram of a limiting plate according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 11, the terminal box assembly of the present invention is used on an electric energy meter, and specifically, the terminal box assembly is generally disposed on a base 51 of the electric energy meter.

The terminal box assembly of the electric energy meter generally comprises a terminal box 1 and a relay 2, wherein a current terminal 11, a voltage terminal 12 and a zero line terminal 13 are arranged in the terminal box 1, as shown in fig. 9, a first accommodating cavity 1a for accommodating the current terminal 11, a second accommodating cavity 1b for accommodating the voltage terminal 12 and a third accommodating cavity 1c for accommodating the zero line terminal 13 are arranged in the terminal box 1, the relay 2 is connected with the current terminal 11 through a shunt 21, a slot 1d for inserting the limiting plate 3 is formed in the terminal box 1, and the slot 1d is communicated with the first accommodating cavity 1a, the second accommodating cavity 1b and the third accommodating cavity 1 c. In this embodiment, the slot 1d is disposed at the lower portion of the terminal box 1, and the limiting plate 3 is inserted into the slot 1d from bottom to top.

In order to realize the matching between the limiting plate and the slot, as shown in fig. 11, a clamping block 34 is disposed on the outer side wall of the limiting plate 3, correspondingly, a clamping slot matched with the clamping block 34 is disposed on the inner side wall of the slot 1d, and the limiting plate 3 is fixed in the slot 1d through the matching between the clamping block 34 and the clamping slot.

A zero line wiring terminal 13 and three groups of wiring terminal groups are arranged in the terminal box 1, the three groups of wiring terminal groups are respectively of an A phase, a B phase and a C phase, and each group of wiring terminal group comprises two current wiring terminals 11 and a voltage wiring terminal 12 positioned on the upper sides of the two current wiring terminals 11.

In order to prevent the current terminal from moving to the relay side, as shown in fig. 8 and fig. 11, the above-mentioned stopper plate 3 at least has a first stopper portion 31 for restricting the current terminal 11 from moving to the relay 2, and the first stopper portion 31 abuts against the end surface of the current terminal 11 on the side facing the relay 2 in the state where the current terminal 11 is in the first accommodation chamber 1 a. In addition, in order to limit the movement of the voltage terminal towards the relay, the limiting plate 3 is further provided with a second blocking portion 32 which extends upwards and limits the movement of the voltage terminal 12 towards the relay 2, and in a state that the limiting plate 3 is positioned in the slot 1d, the second blocking portion 32 is partially positioned in the second accommodating cavity 1b and abuts against the end surface of the voltage terminal 12 at the side facing the relay 2. The above-mentioned voltage terminal 12 is provided in the terminal box 1.

In order to limit the movement of the neutral terminal toward the relay, as shown in fig. 3 and fig. 11, the limit plate 3 further has a third stopper 33 extending upward and limiting the movement of the neutral terminal 13 toward the relay 2, and the third stopper 33 abuts against the end surface of the neutral terminal 13 on the side facing the relay 2 in a state where the neutral terminal 13 is in the third housing chamber 1 c. In addition, one end of the neutral terminal 13 is connected with the pin 132 through the connecting wire 131, the terminal box 1 is provided with a plurality of protrusions 14 for positioning the connecting wire 131, wherein at least one protrusion 14 is located on the upper side of the second accommodating cavity 1b, and a space 1e for the connecting wire 131 to pass through is formed between the protrusion 14 and the upper side wall of the corresponding second accommodating cavity 1 b.

Current wiring end 11, voltage wiring end 12, the screw hole that supplies the installation of screw 6 is all seted up to the upper end of zero line wiring end 13, the hole 100 of dodging of screw is all seted up to the upper end of first holding chamber 1a, second holding chamber 1b and third holding chamber 1c, the screw dodges the hole 100 through corresponding current wiring end 11 that will correspond, voltage wiring end 12 and zero line wiring end 13 are fixed at corresponding holding intracavity, wherein, there is the clearance between the internal perisporium of dodging hole 100 and the periphery wall of the screw 6 that corresponds. In order to prevent the screws on the terminals from tilting upward, the terminal box 1 is provided with a cover plate 4 on the upper side of the first receiving cavity 1a, specifically, as shown in fig. 11, two opposite sides of the cover plate 4 are provided with buckles 41, and the cover plate 4 is fixed on the terminal box 1 by the buckles 41 engaging with the corresponding side edges of the terminal box 1.

In this embodiment, the main protection point is the structural connection relationship of the components involved in the terminal box assembly, and as for the circuit connection involved therein, the details will not be repeated in this embodiment, which are similar to those in the prior art.

Claims

1. The utility model provides an end button box subassembly of electric energy meter, includes end button box (1), relay (2), electric current wiring end (11), voltage wiring end (12) and zero line wiring end (13), set up first holding chamber (1a) for holding electric current wiring end (11) in end button box (1), relay (2) are connected its characterized in that through shunt (21) with electric current wiring end (11): offer on terminal button box (1) and supply limiting plate (3) to insert slot (1d) of establishing, slot (1d) link up with first holding chamber (1a) mutually, limiting plate (3) are gone up and have first stop part (31) that restriction electric current wiring end (11) removed to relay (2) direction at least, are in under the state in first holding chamber (1a) at electric current wiring end (11), first stop part (31) offsets at the terminal surface towards relay (2) one side with electric current wiring end (11).

2. The terminal box assembly of an electric energy meter according to claim 1, wherein: the inserting groove (1d) is formed in the lower portion of the terminal box (1), and the limiting plate (3) is inserted into the inserting groove (1d) from bottom to top.

3. The terminal box assembly of an electric energy meter according to claim 2, wherein: the outer side wall of the limiting plate (3) is provided with a clamping block (34), correspondingly, the inner side wall of the slot (1d) is provided with a clamping groove matched with the clamping block (34), and the limiting plate (3) is fixed in the slot (1d) through the matching of the clamping block (34) and the clamping groove.

4. An electrical energy meter terminal block assembly according to any one of claims 1 to 3, wherein: and the limiting plate (3) is provided with a second blocking part (32) which extends upwards and limits the voltage terminal (12) to move towards the relay (2).

5. The terminal box assembly of an electric energy meter according to claim 4, wherein: be provided with in terminal box (1) second holding chamber (1b) with holding voltage terminal (12), second holding chamber (1b) link up with slot (1d) mutually limiting plate (3) are located under the state of slot (1d), second stop part (32) part is located this second holding chamber (1b), and offsets with voltage terminal (12) at the terminal surface towards relay (2) one side.

6. The terminal box assembly of an electric energy meter according to claim 4, wherein: the terminal box (1) is internally provided with three groups of wiring terminal groups, and each group of wiring terminal group comprises two current wiring terminals (11) and a voltage wiring terminal (12) positioned on the upper sides of the two current wiring terminals (11).

7. The terminal box assembly of an electric energy meter according to claim 5, wherein: and the limiting plate (3) is also provided with a third blocking part (33) which extends upwards and limits the zero line terminal (13) to move towards the relay (2).

8. The terminal box assembly of an electrical energy meter of claim 7, wherein: one end of the zero line terminal (13) is connected with the pin (132) through a connecting wire (131), and a convex part (14) used for positioning the connecting wire (131) is arranged on the terminal button box (1).

9. The terminal box assembly of an electrical energy meter of claim 8, wherein: the convex parts (14) are multiple, wherein at least one convex part (14) is positioned on the upper side of the second accommodating cavity (1b), and a space (1e) for a connecting line (131) to pass through is formed between the convex part and the upper side wall of the corresponding second accommodating cavity (1 b).

10. The terminal box assembly of an electric energy meter according to claim 1, wherein: the terminal box (1) is provided with a cover plate (4) on the upper side of the first accommodating cavity (1 a).

11. The terminal block assembly of an electrical energy meter of claim 10, wherein: the relative both sides of apron (4) are provided with buckle (41), apron (4) are fixed through buckle (41) and the joint of terminal button box (1) corresponding side reason on terminal button box (1).