CN210294350U - Electric energy meter and meter box with same - Google Patents

Abstract

The utility model relates to an electric energy meter, be equipped with the first mutual-inductor that supplies the live wire to run through in its base and the table lid enclose the space that closes, supply the second mutual-inductor that the zero line runs through and be used for getting the puncture fastener of voltage, the second through wires hole that has the first through wires hole that supplies the live wire to pass and supply the zero line to pass on the puncture fastener, correspond on two curb plates of base and set up the first entrance hole and the first wire hole that supply the live wire to pass in proper order, and supply second entrance hole and the second wire hole that the zero line passed in proper order, first through wires hole and first mutual-inductor are located the first line route that the live wire passed first entrance hole and first wire hole, second through wires hole and second mutual-inductor are located the second that the zero line passed second entrance hole and second wire hole and walk on the line route. The utility model discloses still relate to a table case that has above-mentioned electric energy meter. The live wire and the zero line can directly penetrate through the electric energy meter, and the voltage is clamped through the puncture wire, so that the temperature of the electric energy meter can be kept normal, and the occurrence possibility of meter burning is avoided.

Description

Electric energy meter and meter box with same

Technical Field

The utility model relates to an ammeter technical field, concretely relates to electric energy meter and have table case of this electric energy meter.

Background

An electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, fire meter, kilowatt hour meter, and is an instrument for measuring various electric quantities.

The prior electric energy meter comprises a meter seat, an upper cover and an end button box, wherein two first clamping hooks are respectively arranged at the front end and the rear end of the bottom of the upper cover, a first clamping boss corresponding to the first clamping hooks is arranged on the meter seat, the first clamping hooks are in clamping fit with the first clamping boss, the end button box comprises a box body, a bottom plate and a wiring terminal, the box body is provided with a plurality of accommodating cavities with bottom openings and arranged in parallel, and the wiring terminal is arranged in the accommodating cavities; the front side of the mounting cavity is provided with a wiring hole, and the top of the mounting cavity is provided with an operation hole; the bottom plate is fixedly matched with the bottom of the box body.

As shown in fig. 13 and 14, the electric energy meter includes a base 1 ' and a cover 2 ', a terminal box 3 ', a transformer 6 ' and a circuit board 7 ' are disposed in a space enclosed by the base 1 ' and the cover 2 ', the transformer 6 ' is connected to the circuit board 7 ' by a conductive connecting member 61 ', a first connection terminal 41 ', a second connection terminal 42 ', a third connection terminal 51 ' and a fourth connection terminal 52 ' are disposed in the terminal box 3 ', the first connection terminal 41 ' and the second connection terminal 42 ' are connected by a first copper member 43 ', the third connection terminal 51 ' and the fourth connection terminal 52 ' are connected by a second copper member 53 ', a live wire is connected to an interface 411 ' of the first connection terminal 41 ', the first screw 44 ' is pressed in the interface 411 ' of the first connection terminal 41 ' and is sequentially connected out through the first copper piece 43 ' and the second connection terminal 42 '; the zero line is connected into an interface 511 ' of the third connecting terminal 51 ', the zero line is pressed in the interface 511 ' of the third connecting terminal 51 ' through a second screw 54 ', and is sequentially connected out through a second copper piece 53 ' and a fourth connecting terminal 52 ', the second copper piece 53 ' penetrates through a through hole of the mutual inductor 6 ', the current on the live line generates heat through the first copper piece 43 ' in the energized state, and when the first screw 44 ' is not tightly connected with the live line, the contact resistance of the live line is increased, so that the temperature is increased, and the meter burning condition occurs; the current on the zero line generates heat through the second copper piece 53 ', when the second screw 54' is not tightly connected with the zero line, the contact resistance is increased, and the temperature of the loop is increased, so that the meter is burnt.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to the current situation of above-mentioned prior art, need not during the wiring screw etc. and then avoided the electric energy meter that the ammeter that arouses burns out because of overheated.

The utility model discloses the first technical problem that will solve is to above-mentioned prior art's current situation, need not the screw during providing a wiring to avoided the table case that burns out because of overheated the ammeter that causes when reaching the wiring convenience.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the utility model provides an electric energy meter, includes the base and sets up the table lid on the base, its characterized in that: a first mutual inductor for a live wire to penetrate through, a second mutual inductor for a zero wire to penetrate through and a puncture wire clamp for taking voltage are arranged in a space enclosed by the base and the meter cover, wherein,

the utility model discloses a wire clamp, including puncture fastener, first inlet wire hole and second inlet wire hole, first outlet wire hole and second outlet wire hole, first inlet wire hole and first outlet wire hole that supply the live wire to pass in proper order and supply the zero line to pass are seted up to correspondence on two curb plates of base, first inlet wire hole and first outlet wire hole that supply the live wire to pass in proper order and second inlet wire hole and second outlet wire hole that supply the zero line to pass in proper order are located to first through wire hole and first mutual-inductor to be located the live wire and pass on the first route of first inlet wire hole and first outlet wire hole, second inlet wire hole and second mutual-inductor are located the second that the zero line passes second inlet wire hole and second outlet.

For the convenience of wiring, preferably, the two side plates of the base are an upper plate and a lower plate which are arranged oppositely, the first wire inlet hole in the upper plate and the first wire outlet hole in the lower plate are arranged oppositely, and the second wire inlet hole in the upper plate and the second wire outlet hole in the lower plate are arranged oppositely. Therefore, the possibility of bending the live wire and the zero wire in the wiring process is reduced, and further the damage of the live wire and the zero wire due to bending is reduced.

In order to conveniently accommodate the puncture wire clamp and prevent the puncture wire clamp from moving, a partition plate is convexly arranged on the bottom plate of the base at a position close to the lower plate, the partition plate and the lower plate are oppositely arranged, an accommodating cavity for accommodating the puncture wire clamp is formed between the partition plate and the lower plate, and a first through hole corresponding to the first wire inlet hole and a second through hole corresponding to the second wire inlet hole are formed in the partition plate.

The puncture wire clamp can adopt an integrated into one piece, also can adopt two splint that pair each other, for the processing of convenient threading wire clamp, preferably, the puncture wire clamp includes two splint that pair each other, and first arc wall and second arc wall have all been seted up to corresponding on two splint, the inner wall epirelief of first arc wall is equipped with the first spine portion that is used for puncturing the insulating part of live wire, the inner wall epirelief of second arc wall is equipped with the second spine portion that is used for puncturing the insulating part of zero line, and the first arc wall of two splint pair each other and form first through wires hole, first spine position is in on the internal perisporium of first through wires hole, the second arc wall of two splint pair each other and form the second through wires hole, second spine portion is located on the internal perisporium of second through wires hole.

In order to protect the live wire part and the zero wire part which are positioned in the space enclosed by the base and the meter cover, preferably, a first protective piece and a second protective piece are formed on a bottom plate of the base, the first protective piece extends along the first routing path direction, and a first channel for the live wire to penetrate is formed in the first protective piece; the second protection piece extends along the second routing path direction and is provided with a second channel for the zero line to penetrate through, and the first channel and the second channel are arranged side by side. Like this, prevent that live wire and zero line from exposing in base and table lid enclose and close the space, reduced the electric element in the space and produced influences such as destruction to live wire and zero line, carried out effectual protection to live wire and zero line.

In order to further avoid bending during threading of the live wire and the neutral wire, preferably, the first protective element and the second protective element are rod-shaped, the first channel extends along the axial direction of the first protective element, and the second channel extends along the axial direction of the second protective element. Therefore, the live wire and the zero wire can smoothly penetrate through the linear first protective piece and the linear second protective piece respectively, so that the possibility of bending the live wire part in the first protective piece and the possibility of bending the zero wire part in the second protective piece are reduced.

Preferably, the first end of the first protection piece and the first end of the second protection piece penetrate through the upper plate of the base, an installation cavity for accommodating the first mutual inductor and the second mutual inductor is formed among the second end of the first protection piece, the second end of the second protection piece and the partition plate, the through hole of the first mutual inductor corresponds to the first through hole in the partition plate, and the through hole of the second mutual inductor corresponds to the second through hole in the partition plate. Thus, the first mutual inductor and the second mutual inductor are positioned while the live wire part and the zero wire part which are positioned in the space enclosed by the base and the meter cover are protected.

The first mutual inductor and the second mutual inductor are connected in multiple modes, preferably, the first mutual inductor and the second mutual inductor are fixedly inserted in the installation cavity.

In order to realize the positioning and installation of the first transformer, preferably, a first annular flange and a first annular groove are respectively arranged at the second end of the first protection piece and the partition plate, correspondingly, a second annular groove in plug-in fit with the first annular flange and a second annular flange in plug-in fit with the first annular groove are respectively arranged on the end faces of the first transformer along the two ends of the through hole in the axial direction, and the second annular groove and the second annular flange are concentrically arranged with the through hole of the first transformer.

In order to realize the positioning and installation of the second transformer, preferably, a third annular flange and a third annular groove are respectively arranged at the second end of the second protection member and the partition plate, correspondingly, a fourth annular groove in plug-in fit with the third annular flange and a fourth annular flange in plug-in fit with the third annular groove are respectively arranged on the end faces of the two ends of the second transformer along the axial direction of the through hole, and the fourth annular groove and the fourth annular flange are concentrically arranged with the through hole of the second transformer.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the utility model provides a table case with foretell electric energy meter which characterized in that: the electric energy meter box comprises a box body used for containing an electric energy meter, wherein the electric energy meter is hung on a bottom plate of the box body, a third wire inlet hole for a live wire to penetrate through and a fourth wire inlet hole for a zero wire to penetrate through are formed in a wall plate adjacent to an upper plate of the box body, and a third wire outlet hole for the live wire to penetrate through and a fourth wire outlet hole for the zero wire to penetrate through are formed in a wall plate adjacent to a lower plate of the box body.

Preferably, a circuit breaker is arranged on the bottom plate of the box body at a position adjacent to the third wire outlet hole, and the live wire and the neutral wire both pass through the circuit breaker and pass through the corresponding wire outlet holes to be extended out of the box body.

In order to facilitate the wiring of the electric energy meter and the meter box, the box body is provided with at least two boxes which are arranged side by side, the third wire inlet hole and the fourth wire inlet hole are communicated with each other to form a strip-shaped hole, the corresponding wall plates of the box body are provided with the strip-shaped holes, and the live wire and the zero wire penetrate through the corresponding strip-shaped holes and penetrate through the electric energy meter in the corresponding box body.

Compared with the prior art, the utility model has the advantages of: live wire and zero line are direct can run through the electric energy meter to press from both sides the voltage on live wire and the zero line through the puncture line clamp, for the circuit board power supply, this circuit board return circuit does not have basically under the 220V voltage and generates heat, the utility model discloses make the electric current in live wire, the zero line need not through binding post, copper spare and the screw among the prior art, thereby make the electric energy meter temperature keep normal, avoided the overheated and then avoided the possibility that the fever meter takes place of table, in addition, make things convenient for the wiring between electric energy meter and the table case, simple and clear, labour saving and time saving has improved work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an electric energy meter installed in a meter box according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a three-dimensional exploded structure of an electric energy meter (with a live wire and a zero wire passing through the meter);

fig. 3 is a schematic view of a partial structure of an electric energy meter according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of an electric energy meter according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of an electric energy meter according to an embodiment of the present invention (through which a live wire and a neutral wire are inserted);

FIG. 6 is a cross-sectional view of a portion of the structure of FIG. 5;

FIG. 7 is a schematic structural diagram of a base of the electric energy meter;

FIG. 8 is a schematic view of the structure of FIG. 7 at another angle; fig. 9 is a schematic structural view of the piercing clip according to the embodiment of the present invention;

FIG. 10 is a schematic perspective exploded view of FIG. 9;

fig. 11 is a schematic structural diagram of a box body according to an embodiment of the present invention;

fig. 12 is a schematic connection diagram of main components in an electric energy meter according to an embodiment of the present invention;

fig. 13 is a schematic perspective exploded view of an electricity meter according to the embodiment of the present invention;

fig. 14 is a schematic view of the structure of fig. 13 at another angle.

Detailed Description

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

As shown in fig. 1 to 12, the electric energy meter of the embodiment of the present invention includes a base 1 and a meter cover 2 disposed on the base 1, wherein a first transformer 31, a second transformer 32, a circuit board 7 and a piercing clamp 4 for taking voltage are disposed in a space enclosed by the base 1 and the meter cover 2; wherein the content of the first and second substances,

as shown in fig. 6, the first transformer 31 has a through hole 310 through which the live wire 100 passes, the first transformer 31 can be connected to the circuit board 7, the second transformer 32 has a through hole 320 through which the neutral wire 200 passes, the second transformer 32 can be connected to the circuit board 7, the connection between the first transformer 31 and the circuit board and the connection between the second transformer 32 and the first transformer 31 are similar to those in fig. 13, the first transformer 31 can be connected to the first conductive member of the circuit board 7 by a first conductive connecting member 301, and the second transformer 32 can be connected to the second conductive member of the circuit board 7 by a second conductive connecting member 302.

As shown in fig. 3 to 8, two side plates of the base 1 are correspondingly provided with a first wire inlet 111 and a first wire outlet 121 through which the live wire 100 sequentially passes, and a second wire inlet 112 and a second wire outlet 122 through which the neutral wire 200 sequentially passes, in this embodiment, the two side plates of the base 1 are respectively an upper plate 11 and a lower plate 12 which are oppositely arranged, the first wire inlet 111 on the upper plate 11 and the first wire outlet 121 on the lower plate 12 are oppositely arranged, and the second wire inlet 112 on the upper plate 11 and the second wire outlet 122 on the lower plate 12 are oppositely arranged, as shown in fig. 4 to 8.

As shown in fig. 7 and 8, a partition plate 14 is convexly provided on the bottom plate 13 of the base 1 at a position adjacent to the lower plate 12, the partition plate 14 is arranged opposite to the lower plate 12, and a receiving cavity 1a for receiving the puncture wire clamp 4 is formed between the partition plate 14 and the lower plate 12, and the partition plate 14 has a first through hole 141 corresponding to the first wire inlet hole 111 and a second through hole 142 corresponding to the second wire inlet hole 112. The puncture wire clamp 4 is connected with the circuit board 7, and the puncture wire clamp 4 is provided with a first threading hole 4a for the live wire 100 to pass through and a second threading hole 4b for the zero wire 200 to pass through,

as shown in fig. 9 and 10, the wire-tying clamp 4 includes two clamp plates 41 that are engaged with each other, the two clamp plates 41 are fixed together by a connecting member 43, in this embodiment, there are two connecting members 43, each of the two clamp plates 41 has a first arc-shaped groove 411 and a second arc-shaped groove 412, a first spike 4111 for piercing an insulator of the live wire 100 is protruded on an inner wall of the first arc-shaped groove 411, a second spike 4121 for piercing an insulator of the neutral wire 200 is protruded on an inner wall of the second arc-shaped groove 412, the first arc-shaped grooves 411 of the two clamp plates 41 are engaged with each other to form the first threading hole 4a, the first spike 4111 is located on an inner peripheral wall of the first threading hole 4a, the second arc-shaped grooves 412 of the two clamp plates 41 are engaged with each other to form the second threading hole 4b, the second spike 4121 is located on an inner peripheral wall of the second threading hole 4b, so that when the live wire and the neutral wire pass through the corresponding threading holes, the first spike 4111 can pierce the insulator of the live wire to contact with the conductor of the live wire 100, and the second spike 4121 can pierce the insulator of the zero wire to contact with the conductor of the zero wire 200, so that the purpose of getting voltage of the puncture wire clamp is achieved.

As shown in fig. 6, the first threading hole 4a and the through hole 310 of the first transformer 31 are located on a first routing path of the live wire 100 passing through the first wire inlet hole 111 and the first wire outlet hole 121, and the second threading hole 4b and the through hole 320 of the second transformer 32 are located on a second routing path of the neutral wire 200 passing through the second wire inlet hole 112 and the second wire outlet hole 122. In order to protect the live wire part and the zero wire part in the space enclosed by the base and the watch cover, a first protective piece 15 and a second protective piece 16 are formed on the bottom plate 13 of the base 1, the first protective piece 15 extends along the first routing path direction and is provided with a first passage 15a for the live wire 100 to penetrate, and the live wire 100 is partially penetrated in the first passage 15 a; the second protection member 16 extends along the second routing path direction, and is provided with a second channel 16a through which the zero line 200 passes, the zero line 200 passes through the second channel 16a, and the first channel 15a and the second channel 16a are arranged side by side at intervals, in this embodiment, the first protection member 15 and the second protection member 16 are both rod-shaped, the first channel 15a extends along the axial direction of the first protection member 15, and the inner diameter of the first channel 15a of the first protection member 15 is adapted to the outer diameter of the live wire 100; the second channel 16a extends in the axial direction of the second guard 16, and the inner diameter of the second channel 16a of the second guard 16 is adapted to the outer diameter of the neutral wire 200, see fig. 5.

As shown in fig. 5 to 8, in order to entirely protect the live wire portion and the neutral wire portion located in the space enclosed by the base and the cover, the first end of the first guard 15 and the first end of the second guard 16 both penetrate through the upper plate 11 of the base 1, an installation cavity 1b for accommodating the first transformer 31 and the second transformer 32 is formed between the second end of the first guard 15, the second end of the second guard 16 and the partition 14, the through hole 310 of the first transformer 31 is arranged corresponding to the first through hole 141 on the partition 14, and the through hole 320 of the second transformer 32 is arranged corresponding to the second through hole 142 on the partition 14; the first transformer 31 and the second transformer 32 are inserted and fixed in the installation cavity 1 b.

When the live wire 100 is threaded, the live wire 100 passes through the first wire inlet hole 111, passes through the first channel 15a, the through hole 310, the first through hole 141 and the first wire threading hole 4a in sequence, and then passes through the first wire outlet 121 hole; when the zero wire 200 is inserted, the zero wire 200 passes through the second wire inlet hole 112, passes through the second channel 16a, the through hole 320, the second through hole 142 and the second wire passing hole 4b in sequence, and then passes through the second wire outlet hole 122, as shown in fig. 6.

As shown in fig. 6 to 8, in order to mount the first transformer, the second end of the first protector 15 and the partition 14 are respectively provided with a first annular flange 151 and a first annular groove 143, correspondingly, the end surfaces of the two ends of the first transformer 31 along the axial direction of the through hole 310 are respectively provided with a second annular groove 311 inserted into the first annular flange 151 and a second annular groove 312 inserted into the first annular groove 143, and the second annular groove 311 and the second annular groove 312 are concentrically arranged with the through hole 310 of the first transformer 31. The installation mode of the first mutual inductor has multiple types, and the positioning and installation purpose of the first mutual inductor only needs to be realized.

As shown in fig. 6, in order to mount the second transformer, the second end of the second protector 16 and the partition 14 are respectively provided with a third annular flange 161 and a third annular groove 144, correspondingly, the end surfaces of the two ends of the second transformer 32 along the axial direction of the through hole 320 are respectively provided with a fourth annular groove 321 in insertion fit with the third annular flange 161 and a fourth annular flange 322 in insertion fit with the third annular groove 144, and the fourth annular groove 321 and the fourth annular flange 322 are concentrically arranged with the through hole 320 of the second transformer 32. The mounting mode of the second mutual inductor is various, and the positioning and mounting purpose of the second mutual inductor can be realized.

As shown in fig. 2, the watch case 2 in this embodiment includes an upper cover 21, an intermediate cover 23, and a lower cover 22, the intermediate cover 23 includes a cover 231 and a cover plate 232 covering the cover 231, a cavity 2311 for installing the module 8 is formed on the cover 231, and the module 8 is located between the cover 231 and the cover plate 232 when the cover plate 232 is in a state of covering the cover 231.

As shown in fig. 1 and 11, the meter box with the electric energy meter comprises at least two boxes 5 for accommodating the electric energy meter, in this embodiment, four boxes 5 are arranged side by side, the electric energy meter is hung in each box 5 and hung on the bottom plate of the box 5, a breaker 6 is arranged on the bottom plate of the box 5 at a position close to a third wire outlet 51, the box 5 is provided with a third wire inlet hole for a live wire 100 to penetrate through and a fourth wire inlet hole for a zero wire 200 to penetrate through on a side plate close to an upper plate 11, the third wire inlet hole and the fourth wire inlet hole are communicated from top to bottom to form a strip-shaped hole 53, the box 5 is provided with a third wire outlet 51 for the live wire 100 to penetrate out and a fourth wire outlet hole 52 for the zero wire 200 to penetrate out on a lower wall plate close to the lower plate 12, when the live wire 100 and the zero wire 200 both penetrate into the electric energy meter corresponding to the boxes 5, the live wire 100 and the neutral wire 200 both penetrate out of the box 5 through the wire outlet of the corresponding electric energy meter and then through the breaker 6 and the wire outlet of the corresponding box 5.

As shown in fig. 12, the electric energy meter has a metering portion and other circuits, in the power-on state, the currents in the live wire 100 and the neutral wire 200 pass through the corresponding transformers to generate secondary induced currents for the metering portion in the electric energy meter, and the piercing clamp 4 takes voltages from the live wire 100 and the neutral wire 200 to supply power to the metering portion and other circuits in the electric energy meter. The first transformer 31 and the second transformer 32 may be current transformers of GRT728DT, and may also be current transformers of other types.

End-free button box in the electric energy meter in this implementation, live wire and zero line are direct can run through out the electric energy meter to press from both sides the voltage on live wire and the zero line through the puncture line and get, give the circuit board power supply, this circuit board return circuit does not basically have under 220V voltage and generates heat, the utility model discloses make the electric current in live wire, the zero line need not through binding post, copper spare and the screw among the prior art, thereby make the electric energy meter temperature keep normal, avoided the overheated and then avoided the possibility that the fever meter takes place of table, in addition, make things convenient for the wiring between electric energy meter and the table case, simple and clear, labour saving and time saving has improved work efficiency.

What mainly protects in the above-mentioned this embodiment is the connection of electric energy meter and live wire and zero line to and how electric energy meter and table case pass through live wire and zero line to be connected, wherein other circuit connection relations that involve are the same with circuit connection in the current ordinary ammeter, and this embodiment will not be repeated in detail again.

Claims (13)

1. The utility model provides an electric energy meter, includes base (1) and table lid (2) of setting on base (1), its characterized in that: a first mutual inductor (31) for a live wire (100) to penetrate through, a second mutual inductor (32) for a zero wire (200) to penetrate through and a puncture wire clamp (4) for taking voltage are arranged in a space enclosed by the base (1) and the meter cover (2),

the utility model discloses a two-phase three-phase.

2. The electric energy meter of claim 1, wherein: the base is characterized in that two side plates of the base (1) are an upper plate (11) and a lower plate (12) which are arranged oppositely, a first wire inlet hole (111) in the upper plate (11) and a first wire outlet hole (121) in the lower plate (12) are arranged oppositely, and a second wire inlet hole (112) in the upper plate (11) and a second wire outlet hole (122) in the lower plate (12) are arranged oppositely.

3. The electric energy meter of claim 2, wherein: a partition plate (14) is convexly arranged on a bottom plate (13) of the base (1) at a position close to the lower plate (12), the partition plate (14) and the lower plate (12) are oppositely arranged, an accommodating cavity (1a) for accommodating the puncture wire clamp (4) is formed between the partition plate (14) and the lower plate (12), and a first through hole (141) corresponding to the first wire inlet hole (111) and a second through hole (142) corresponding to the second wire inlet hole (112) are formed in the partition plate (14).

4. An electric energy meter according to claim 3, characterized in that: the puncture wire clamp (4) comprises two clamping plates (41) which are mutually involutory, a first arc-shaped groove (411) and a second arc-shaped groove (412) are correspondingly arranged on the two clamping plates (41), a first spike (4111) for puncturing the insulating piece of the live wire (100) is convexly arranged on the inner wall of the first arc-shaped groove (411), a second sharp thorn part (4121) used for piercing an insulating part of the zero line (200) is convexly arranged on the inner wall of the second arc-shaped groove (412), the first arc-shaped grooves (411) of the two clamping plates (41) are oppositely combined to form the first threading hole (4a), the first spine part (4111) is positioned on the inner peripheral wall of the first threading hole (4a), the second arc-shaped grooves (412) of the two clamping plates (41) are oppositely combined to form the second threading hole (4b), the second spine part (4121) is positioned on the inner circumferential wall of the second threading hole (4 b).

5. An electric energy meter according to claim 3, characterized in that: a first protective piece (15) and a second protective piece (16) are formed on a bottom plate (13) of the base (1), the first protective piece (15) extends along the first routing path direction, and a first channel (15a) for a live wire (100) to penetrate is formed in the first protective piece; the second protective piece (16) extends along the second routing path direction, a second channel (16a) for the zero line (200) to penetrate is formed in the second protective piece, and the first channel (15a) and the second channel (16a) are arranged side by side.

6. The electric energy meter of claim 5, wherein: the first guard (15) and the second guard (16) are each rod-shaped, the first channel (15a) extending in the axial direction of the first guard (15), and the second channel (16a) extending in the axial direction of the second guard (16).

7. The electric energy meter of claim 5, wherein: the first end of first protecting piece (15) and the first end of second protecting piece (16) all run through on upper plate (11) of base (1), be formed with the holding between second end, the second end of second protecting piece (16) and baffle (14) of first protecting piece (15) installation cavity (1b) of first mutual-inductor (31) and second mutual-inductor (32), perforating hole (310) of first mutual-inductor (31) and first through-hole (141) on baffle (14) correspond the setting, perforating hole (320) on second mutual-inductor (32) and second through-hole (142) on baffle (14) correspond the setting.

8. The electric energy meter of claim 7, wherein: the first mutual inductor (31) and the second mutual inductor (32) are fixedly inserted in the installation cavity (1 b).

9. The electric energy meter of claim 8, wherein: the second end of the first protection piece (15) and the partition plate (14) are respectively provided with a first annular flange (151) and a first annular groove (143), correspondingly, the end faces of the two ends of the first mutual inductor (31) along the axial direction of the through hole (310) are respectively provided with a second annular groove (311) in plug-in fit with the first annular flange (151) and a second annular flange (312) in plug-in fit with the first annular groove (143), and the second annular groove (311) and the second annular flange (312) are concentrically arranged with the through hole (310) of the first mutual inductor (31).

10. The electric energy meter of claim 8, wherein: the second end of the second protective piece (16) and the partition plate (14) are respectively provided with a third annular flange (161) and a third annular groove (144), correspondingly, the end faces of the two ends of the second mutual inductor (32) along the axial direction of the through hole (320) are respectively provided with a fourth annular groove (321) in plug-in fit with the third annular flange (161) and a fourth annular flange (322) in plug-in fit with the third annular groove (144), and the fourth annular groove (321) and the fourth annular flange (322) are concentrically arranged with the through hole (320) of the second mutual inductor (32).

11. A meter box having an electrical energy meter according to any one of claims 1 to 10, characterized in that: the electric energy meter box comprises a box body (5) used for containing an electric energy meter, wherein the electric energy meter is hung on a bottom plate of the box body (5), a third wire inlet hole for a live wire (100) to penetrate into and a fourth wire inlet hole for a zero wire (200) to penetrate into are formed in a wall plate adjacent to an upper plate (11) of the box body (5), and a third wire outlet hole (51) for the live wire (100) to penetrate out and a fourth wire outlet hole (52) for the zero wire (200) to penetrate out are formed in the wall plate adjacent to a lower plate (12) of the box body (5).

12. The meter box of claim 11, wherein: a circuit breaker (6) is arranged on a position, close to the third wire outlet hole (51), of the bottom plate of the box body (5), and the live wire (100) and the zero wire (200) penetrate through the circuit breaker (6) and penetrate out of the box body (5) through the corresponding wire outlet holes.

13. The meter box of claim 11, wherein: the utility model discloses a power meter, including box (5), third inlet hole and fourth inlet hole, box (5) have at least two, and arrange side by side, third inlet hole and fourth inlet hole link up mutually and form bar hole (53), all seted up on the corresponding wallboard of box (5) bar hole (53), live wire (100) and zero line (200) penetrate and wear to establish on the electric energy meter that corresponds in box (5) by corresponding bar hole (53).

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