CN208873636U - A kind of electric energy meter - Google Patents

Abstract

The utility model relates to a kind of electric energy meters, the cover for including pedestal and being set on the base, program button is provided in the cover, the bottom of the program button has key column, it is offered in the cover and plants jack therein for key column, it is characterized by: the program button opposing receptacle can be rotated around the axis of itself, the limited step that there is limitation program button to move down in the jack, in the case where program button is turned to and is in close state, it is matched between the limited step and program button and the position limiting structure that restricted program button moves downward is set.Compared with the prior art, the advantages of the utility model are: this is reasonable in design, so that program button can not press, so that the case where preventing maloperation, increases reliability.

Description

A kind of electric energy meter

Technical field

The utility model is specifically related to a kind of electric energy meter.

Background technique

Electric energy meter is the instrument for measuring electric energy, also known as kilowatt-hour meter, energy meter, kilowatt-hour table, refers to the various electricity of measurement The instrument of amount.

Program button is usually provided in the cover of electric energy meter at present, program button includes button cap and push button shaft, button The lower end of axis is electrically connected with the pcb board being arranged in electric energy meter, and staff can press program button to carry out electric energy meter Programming, to modify and related measuring parameter inside electric energy meter is arranged.

The through-hole for program button installation, such as Patent No. are offered in the cover of usual electric energy meter Chinese utility model patent " the single-phase local cost control intelligence of CN201120112886.0 (Authorization Notice No. CN202057699U) Electric energy meter shell ", the cover of the electric energy meter is equipped with program button and takes turns aobvious button.Although realizing the installation of program button, Actual program button needs to carry out lead sealing and fixes when installing, and practical in the case where lead sealing finishes state, program button still can It enough carries out partial turn and is easy to cause the maloperation of program button so that program button is at partial depression state, And then in the long-term use, so that the reliability of electric energy meter inner parameter is unable to get guarantee, there are certain safety is hidden Suffer from.

Therefore, it is necessary to the program buttons to existing electric energy meter to be improved further.

Utility model content

For the current state of the art, the technical problem to be solved by the utility model is to provide one kind to prevent program button Occur maloperation in the case where being in close state, and then improves the electric energy meter of reliability.

Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of electric energy meter, include pedestal and The cover being set on the base is provided with program button in the cover, and the bottom of the program button has key column, described Offered in cover and plant jack therein for key column, it is characterised in that: the program button opposing receptacle can around itself Axis is rotated, and the limited step that there is limitation program button to move down in the jack turns to place in program button Under closed state, is matched between the limited step and program button and the limit knot that restricted program button moves downward is set Structure.

Preferably, the top of the limited step has the first step upwardly extended, accordingly, the program button Bottom has the second step extended downwardly, and the second step is located at the outside of key column, turns to work in program button Under state, the first step is separated with second step, and in the case where program button is in pressing state, the first step and Second step is respectively positioned on limited step, in the case where program button is turned to and is in close state, the bottom of the second step with First step offsets.In this way, in the case where program button is in close state, when pressing program button, program button can not be to moving down It is dynamic, it prevents from increasing reliability in the closed state, there is the case where program button work.

In order to facilitate the spinning movement for realizing program button, the second step is arc-shaped step, and this second The both ends of rank are gradually tilted to the side far from second step from top to bottom.

Specifically, there is the first extending column extended downwardly on the cover medial surface, opened up on first extending column There is the jack, and the lower end of first extending column is provided with the button cap that can be connected with the bottom of key column, the table The lower part of lid is additionally provided with first circuit board, and the bottom of the button cap is provided with leads with the position of the switch on first circuit board Electrolemma is in contact the carbon film of conducting.In this way, passing through button cap realization and first circuit board in the case where program button is in pressing state Connection so that program button works in the state of being pressed.

When pressed, there is the case where program button is pressed, the outside of first extending column in cover in order to prevent Supporting element is provided on wall, in the case where being in assembly completion status, the bottom of the supporting element and the upper surface phase of first circuit board It supports.In this way, the presence of supporting element prevents cover band so that cover can not be pressed in the case where program button is in close state Dynamic first step moves downward, thus the case where so that first step and second step is separated, and then prevent program button Situation under capable of being pressed prevents program button maloperation, improve the reliability of program button.

Preferably, key set is provided on the inside of the cover, the top of the key set has key protrusion, described to press Key set by bracket be arranged on the first circuit board, and the key cover key lobe portion expose to the cover it Outside.

In order to realize that key covers the work of upper key protrusion, the bottom of the key protrusion has carbon film, the key Flexible PCB is provided between set and bracket, the carbon film of the key protrusion and flexible PCB upper switch position contact cooperate, The flexible PCB is electrically connected with first circuit board.In order to realize the installation of cover and pedestal, it is preferable that the one of the cover End is rotatably connected on pedestal, and the other end is fixed on the base by connector.

Specifically, the side of the cover inner sidewall is provided with hook portion, is arranged in the other side opposite with the hook portion Have the first mounting hole, accordingly, be provided with the positioning convex portion matched with the hook portion on the pedestal, the pedestal it is another The second mounting hole corresponding with the first mounting hole is offered on side, the connector passes through the first mounting hole and the second mounting hole And it is cover is fixed on the base.

Preferably, it is recessed inwardly on the pedestal and is formed with concave portion, MC171 interface, institute are offered in the female portion It states concave portion and the periphery of MC171 interface is provided with collar flange.The presence of collar flange, increases creepage distance, increases Anti- magnetic function.

Compared with the prior art, the advantages of the utility model are: 1, in the case where program button is turned to and is in close state, It is matched between limited step and program button and the position limiting structure that restricted program button moves downward is set, it is reasonable in design, So that program button can not press, so that the case where preventing maloperation, increases reliability；2, first extending column Supporting element is provided on lateral wall, in the case where being in assembly completion status, the bottom of the supporting element and the upper table of first circuit board Face offsets, in this way, the presence of supporting element prevents table so that cover can not be pressed in the case where program button is in close state Lid drives first step to move downward, thus the case where so that first step and second step is separated, and then prevent programming Button can be pressed under situation, that is, prevent program button maloperation, improve the reliability of program button.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment；

Fig. 2 is the cross-sectional view (program button is in the working condition that can be pressed) of the utility model embodiment；

Fig. 3 is the cross-sectional view of another angle of the utility model embodiment (program button is in close state)；

Fig. 4 is the cross-sectional view of the part-structure of the utility model embodiment；

Fig. 5 is the structural schematic diagram of the cover of the utility model embodiment；

Fig. 6 is the structural schematic diagram of another angle of Fig. 5；

Fig. 7 is the structural schematic diagram of another angle of Fig. 6；

Fig. 8 is the structural schematic diagram of the pedestal of the utility model embodiment；

Fig. 9 is the structural schematic diagram of another angle of Fig. 8；

Figure 10 is the pedestal of the utility model embodiment and the assembling structure schematic diagram of the second hook；

Figure 11 is the dimensional decomposition structure diagram of Figure 10；

Figure 12 is the end cap of the utility model embodiment and the assembling structure schematic diagram of pedestal；

Figure 13 is the structural schematic diagram of the end cap of the utility model embodiment；

Figure 14 is the structural schematic diagram of another angle of Figure 13；

Figure 15 is the cross-sectional view (installation lead sealing screw) of the end cap of the utility model embodiment；

Figure 16 is the structural schematic diagram of the cover board of the utility model embodiment；

Figure 17 is the partial structure diagram of the utility model embodiment；

Figure 18 is the partial structure diagram of another angle of the utility model embodiment；

Figure 19 is the structural schematic diagram of the battery case of the utility model embodiment；

Figure 20 is the dimensional decomposition structure diagram of the modular cartridge of the utility model embodiment；

Figure 21 is the structural schematic diagram of the cover board body of the utility model embodiment；

Figure 22 is the partial structure diagram of the modular cartridge of the utility model embodiment.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

As shown in Fig. 1 to Figure 22, the electric energy meter of the utility model embodiment includes pedestal 1, the cover that is arranged on pedestal 1 2, end cap 6, outer cover 8, the first circuit board 3 between pedestal 1 and cover 2, the terminal box between pedestal 1 and end cap 6 7 and modular cartridge 9 and battery case 10 between pedestal 1 and outer cover 8, end cap 6 and outer cover 8 be arranged on pedestal 1 and point Not Wei Yu cover 2 the left and right sides, wherein

As shown in Fig. 5 to Fig. 8, one end of cover 2 is rotatably connected on pedestal 1, and the other end is fixed on bottom by connector On seat 1.Specifically, the side of 2 inner sidewall of cover is provided with hook portion 24, is provided in the other side opposite with the hook portion 24 First mounting hole 25 is accordingly provided with the positioning convex portion 11 matched with the hook portion 24 on pedestal 1, pedestal 1 it is another Second mounting hole 12 corresponding with the first mounting hole 25 is offered on side, connector passes through the first mounting hole 25 and the second installation Hole 12 and cover 2 is fixed on pedestal 1.

As shown in Figures 1 to 7, program button 21, infrared communication mouth 22 and key set 23 are provided in cover 2, it is infrared logical News mouth 22 and program button 21 are located at the front and rear sides of key set 23, wherein

As shown in Figures 2 and 3, the bottom of program button 21 has key column 211, offers in cover 2 for key column 211 Jack 200 therein is planted, specifically, there is the first extending column 20 extended downwardly, the first extending column 20 on 2 medial surface of cover Lower end be provided with the button cap 203 that can be connected with the bottom of key column 211, the bottom of button cap 203 is provided with and first Conductive film is in contact the carbon film of conducting in the position of the switch on circuit board 3, and offers on first extending column 20 above-mentioned Jack 200,21 opposing receptacle 200 of program button can be rotated around the axis of itself, have limitation program button in jack 200 21 limited steps 201 moved down, in the case where program button 21 is turned to and is in close state, limited step 201 is pressed with programming The position limiting structure that restricted program button 21 moves downward is arranged in matching between button 21, wherein program button 21 turns to closing Under state, it is fixed on cover board 2 by lead sealing.

Specifically, the top of limited step 201 has the first step 202 upwardly extended, accordingly, program button 21 Bottom there is the second step 212 that extends downwardly, second step 212 is located at the outside of key column 211, and second step 212 is Arc-shaped step, and the both ends of the second step 212 are gradually tilted to the side far from second step 212 from top to bottom. In the case where program button 21 turns to working condition, first step 202 is separated with second step 212, and at program button 21 In being pressed under state, program button 21 drives first step 202 to be moved downward on limited step 201, i.e. first step 202 It is disposed adjacent, and is respectively positioned on limited step 201 with second step 212, and in the case where program button 21 is in pressing state, drive The carbon film that dynamic first extending column 20 moves downwardly to button cap 203 is contacted with the conductive film on first circuit board 3, program button 21 It is in running order；In the case where program button 21 is turned to and is in close state, the bottom of second step 212 and first step 202 It offsets, at this point, program button can not be pressed down on.The first step 202 and second step 212 of the present embodiment form above-mentioned limit Bit architecture.

In addition, as shown in fig. 7, supporting element 204 is provided on the lateral wall of the first extending column 20, in assembly completion shape Under state, the bottom of supporting element 204 and the upper surface of first circuit board 3 offset, in this way, in the case where program button is in close state, Cover 2 can not be pressed, cover 2 is prevented and first step 202 is driven to move downward, to make first step 202 and second The case where rank 212 is separated, and then the situation under preventing program button 21 and capable of being pressed, that is, prevent program button 21 Maloperation improves the reliability of program button 21.

The inside of cover 2 is arranged in the key set 23 of the present embodiment, and the top of key set 23 has key protrusion 231, key set 23 is arranged on first circuit board 3 by bracket 4, and 231 part of key protrusion of key set 23 exposes to Except cover 2.Specifically, the bottom of key protrusion 231 has carbon film, is provided with flexible PCB between key set 23 and bracket 4 5, the carbon film of key protrusion 231 and 5 upper switch position contact of flexible PCB cooperate, and the flexible PCB 5 and first circuit board 3 Electrical connection.

As shown in Fig. 1, Fig. 5 to Fig. 7 and Figure 15, infrared communication mouth 22 can be opened or closed by being provided in cover 2 Cover board 26, the first end of the cover board 26 are rotatably arranged in cover 2, and the second end of cover board 26 is fixed in cover 2 by lead sealing. Specifically, there is convex block 221, the second end of cover board 26 offers the through slot 261 passed through for convex block 221, convex block 221 in cover 2 The through-hole 260 passed through for lead sealing line is offered with corresponding on through slot 261, cover board 26 passes through through-hole 260 by lead sealing money and will cover Plate 26 is fixed in cover 2.In addition, 26 first end of cover board has rotation axis 262, accordingly, has in cover 2 and accommodate the rotation The axis hole 27 of axis 262, in the present embodiment, the two sides of 26 first end of cover board all have the rotation axis 262 to extend internally, two rotations Axis 262 is respectively positioned in the axis hole 27.

If Fig. 4 is simultaneously combined as shown in Figure 11 to Figure 13, the upper surface of the end cap 6 of the present embodiment is equipped with lead sealing mouth 62 and conveniently The P1 mouth 63 of communication, wherein

Lead sealing screw 621 is provided in lead sealing mouth 62, the top of lead sealing screw 621 has the threading hole passed through for lead sealing line 6211, tail end is fixed on terminal box 7, is respectively arranged with incoming line 66 and outlet in the two sides for being located at lead sealing mouth 62 on end cap 6 Mouth 67, lead sealing line successively passes through incoming line 66, threading hole 6211 and line outlet 67 and is attached terminal box 7 and end cap 6, into Line mouth 66 and line outlet 67 are gradually tilted to 62 direction of lead sealing mouth from top to bottom, outlet end and the lead sealing mouth 62 of incoming line 66 With the transition part 661 of certain lateral distance between upstream end.Wherein, the entrance of the outlet end of transition part 661 and lead sealing mouth 62 End is connected to each other, and the outlet end of lead sealing mouth 62 and the upstream end of line outlet 67 are connected to each other, to facilitate threading, while reducing lead Screw a possibility that contacting on envelope line and terminal box, in the present embodiment, transition part 661 is equipped with aperture, and 6 inner sidewall of end cap exists There is the first column 68 close to the side of incoming line 66, offer the through hole 681 being connected with aperture on the first column 68, Under assembly completion status, through hole 681 is just aligned 73 position of plastic part of terminal box 7.In this way, reducing subsequent A possibility that screw 72 in lead sealing line and terminal box 7 contacts, to reduce the risk of electric shock.

In the present embodiment, there is the second column 69, the lead sealing mouth offered on the second column 69 on the inner sidewall of end cap 6 62, under assembly completion status, the plastic part 73 of the bottom and 7 top of terminal box of the second column 69 offsets.This is second vertical Extension 691 is provided on the lateral wall of column 69, the tail end of extension 691 is provided with detection button 692 of uncapping, uncap detection by The bottom of button 692 is provided with the carbon film 6921 that can be in contact with the position of the switch conductive sheet on first circuit board 3, at end cap 6 In assembling under completion status, the carbon film 6921 of detection button of uncapping 692 and the position of the switch conductive sheet phase on first circuit board 3 Contact, is at the state for closing end cap.Above-mentioned extension 691 passes through the lateral wall phase of connecting plate 690 and the second column 69 Connection, the top of connecting plate 690 is connected with the inner sidewall of end cap 6.

As shown in figure 4, having the second extending column 28 extended downwardly on the inner sidewall of cover 2, opened on the second extending column 28 Equipped with the through hole 281 passed through for extension 691, and the detection button 692 of uncapping that the bottom of second extending column 28 is fixed with, Under assembly completion status, the bottom end of extension 691 offsets with detection button 692 of uncapping, to make detection button of uncapping 692 carbon film is in contact conducting with the position of the switch conductive sheet on first circuit board 3, its end cap is made to be in the state closed.

In order to realize the connection of first circuit board 3, in the present embodiment, it is provided on the inner sidewall of pedestal 1 to support The supporting block 191 of one circuit board 3 is additionally provided with card division 192 on the inner sidewall of pedestal 1, accordingly, opens up on first circuit board 3 There is the first bayonet (not shown) matched with card division 192, in the case where first circuit board 3 is in assembly completion status, the first circuit Plate 3 is between supporting block 191 and card division 192, and supporting block 191 is connected on the inner sidewall of pedestal 1 by side rib plate 19, card division 192 are arranged on the inner sidewall of side rib plate 19 and are located at the top of supporting block 191.

The upper surface of end cap 6 is recessed inwardly to form above-mentioned P1 mouth 63, and dust enters P1 mouthfuls in order to prevent, sets on end cap 6 It is equipped with the rubber stopper 64 to seal P1 mouth 63.Second hand 641 is provided on the lateral wall of the rubber stopper 64, specifically Ground, rubber stopper 64 have the pillar extended downwardly, accordingly, offer on end cap 6 and plant hole portion 65 therein for pillar.

In order to prevent will in assembly completion status under end cap 6 pry open, as shown in Fig. 8 to Figure 13,6 roof of end cap it is interior Side all has the extension board 61 extended downwardly along the both ends of the length direction of terminal box 7, and extension board 61 is to overlook L-shaped folding Plate, extension board 61 includes the transverse slat 611 that side wall corresponding with end cap 6 is connected and the riser 612 being connected with transverse slat 611, and is somebody's turn to do It is formed with the first limiting slot 60 between extension board 61 and the corresponding side wall of end cap 6, accordingly, has on the inner sidewall of pedestal 1 and supplies The accommodation groove 14 that extension board 61 is placed in is corresponded to, is respectively provided on the medial surface of the first side wall 140 of accommodation groove 14 to corresponding transverse slat The first limit plate 141 and the second limit plate 142 that 611 directions extend, shape between the first limit plate 141 and the second limit plate 142 At the second limiting slot 1400 having for the merging of riser 612, and the second limit plate 142 is located in the first limiting slot 60.Above-mentioned accommodating The cross section of the first side wall 140 of slot 14 is Z-shaped, includes the first side of the first side plate 1401, the second side plate 1402 and connection The intermediate plate of plate 1401 and the second side plate 1402, intermediate plate are the first limit plate 141.

Have on the pedestal 1 of the present embodiment and upwardly extend and spaced two pieces of positioning plates 15, terminal box 7 is located at two pieces Between positioning plate 15, and the both ends of the terminal box 7 pass through the first buckle structure respectively and are fixed on corresponding positioning plate 15.Tool Body, it is provided with the supporting rib 16 to support terminal box 7 on the inner sidewall of pedestal 1, is provided on the lateral wall of terminal box 7 One buckle 711 accordingly offers the first card slot 151 matched with corresponding first buckle 711, the first card on positioning plate 15 Button 711 and corresponding first card slot 151 form the first above-mentioned buckle structure.

As shown in Figure 17, Figure 18 and Figure 20 to Figure 22, wireless module (not shown), wireless module are equipped in modular cartridge 9 It is connect by row's needle with first circuit board, offers and facilitate to the spacious of wireless module installation SIM card in the one side wall of modular cartridge 9 Mouthfuls 911, on modular cartridge 9 rotation be provided with can the cover board body 93 that opens or closes of open opposite 911, the first end of cover board body 93 turns The dynamic side for being connected to opening 911, the second end of cover board body 93 have third buckle 931, and fixed by third buckle 931 On the inner sidewall of opening 911, third buckle 931 includes that side view is U-shaped and bending part 9311 made of being recessed inwardly, bending part 9311 lateral wall is equipped with the first fixture block 93111, is respectively provided on the opposite inner sidewall of the two of opening 911 to close bending part The protrusion 9111 at 9311 corresponding opening ends 93112, thus prevent dust, water or worm etc. from entering in modular cartridge by open end, In addition, having the second fixture block 914 being engaged by clamping with 93111 phase of the first fixture block on the inner sidewall of opening 911.In addition, this is curved One end of folding part 9311 has to the first hand 9312 extended far from 93 direction of cover board body, in neighbour on the side wall of modular cartridge 9 The position of nearly first hand 9312 has the inner fovea part 912 being recessed inwardly, between inner fovea part 912 and first hand 9312 It is formed with the gap 94 for facilitating hand to be placed in.

Above-mentioned modular cartridge 9 includes box body 91 and the box cover 92 that lid is located in the box body 91, and opening 911 is provided with box body On 91, and the box body 91 is fixed on box cover 92 by third buckle structure.Specifically, it is arranged on the lateral wall of box cover 92 There is the second fixture block 920, accordingly, the bayonet 913 matched with the second fixture block 920, the second fixture block 920 is offered in box body 91 Above-mentioned third buckle structure is formed with bayonet 913.

As shown in Figures 17 to 19, pedestal 1 is equipped in the two sides for being located at battery case 10 and is oppositely arranged two pieces of limit gussets 18, two pieces of limit gussets 18 extend along the length direction of battery case 10.And there is the accommodating storehouse in inverted u-shaped in cover 2 29, it accommodates storehouse 29 and limits the installation space 80 for being formed with set battery box 10 between gusset 18.

In order to realize the connection of battery in battery case, in the present embodiment, connector 31 is plugged on first circuit board 3, and Battery in battery case 10 is electrically connected by the connector 31 with first circuit board 3.Specifically, the top of battery case 10 have to Upper extension and the card base 101 to fix the connector 104 of battery, the connector 104 of battery case 10 are plugged on connector 31 On.Connector 104 is connected by connecting line 1041 with battery, and the top of battery case 10, which is offered, to be pierced by for connecting line 1041 The top of perforation 102, battery case 10 is equipped with two pieces of floors 103 being oppositely arranged, connecting line in the two sides for being located at the perforation 102 1041 are located between two pieces of floors 103.

As shown in Figure 10 to Figure 11, the first hook 17, the first hook 17 are formed on the bottom surface of the pedestal 1 of the present embodiment On be connected with the second hook 170, i.e., the second hook 170 is fixed by snap on the first hook 17.In addition, on pedestal 1 inwardly Recess is formed with concave portion 13, MC171 interface 131 is offered in concave portion 13, concave portion 13 is in the periphery of MC171 interface 131 It is provided with collar flange 132.The presence of collar flange, increases creepage distance, increases anti-magnetic function.

The orientation being previously mentioned in above-described embodiment, as the reference standard of upper and lower, left and right specifically can refer to arrow in Fig. 1 Direction.

Claims (10)

1. a kind of electric energy meter includes the cover (2) of pedestal (1) and setting on pedestal (1), is provided on the cover (2) The bottom of program button (21), the program button (21) has key column (211), offers on the cover (2) for key Column (211) plants jack (200) therein, it is characterised in that: program button (21) opposing receptacle (200) can around itself Axis is rotated, and the limited step (201) that in the jack (200) there is limitation program button (21) to move down is being compiled Journey button (21), which turns to, to be in close state down, and the program button (21) is fixed on the cover (2) by lead sealing, and It is matched between the limited step (201) and program button (21) and the limit knot that restricted program button (21) moves downward is set Structure.

2. electric energy meter according to claim 1, it is characterised in that: the top of the limited step (201) has prolongs upwards The first step (202) stretched, accordingly, the bottom of the program button (21) have the second step (212) extended downwardly, institute The outside that second step (212) is located at key column (211) is stated, in the case where program button (21) turns to working condition, described first Step (202) is separated with second step (212), and in the case where program button (21) is in pressing state, the first step (202) it is respectively positioned on limited step (201) with second step (212), in the case where program button (21) is turned to and is in close state, The bottom of the second step (212) offsets with first step (202).

3. electric energy meter according to claim 2, it is characterised in that: the second step (212) is arc-shaped step, and The both ends of the second step (212) are gradually tilted to the side far from second step (212) from top to bottom.

4. electric energy meter according to claim 2, it is characterised in that: have on cover (2) medial surface and extend downwardly First extending column (20), offers the jack (200) on first extending column (20), and first extending column (20) Lower end is provided with the button cap (203) that can be connected with the bottom of key column (211), and the lower part of the cover (2) is additionally provided with First circuit board (3), the bottom of the button cap (203) are provided with and conductive film in the position of the switch on first circuit board (3) Be in contact the carbon film of conducting.

5. electric energy meter according to claim 4, it is characterised in that: be provided on the lateral wall of first extending column (20) Supporting element (204), in the case where being in assembly completion status, the bottom of the supporting element (204) and the upper surface of first circuit board (3) It offsets.

6. electric energy meter according to claim 5, it is characterised in that: key set (23) are provided on the inside of the cover (2), The top of the key set (23) has key protrusion (231), and the key set (23) is arranged by bracket (4) described first On circuit board (3), and the key protrusion (231) of the key set (23) partially exposes to except the cover (2).

7. electric energy meter according to claim 6, it is characterised in that: the bottom of the key protrusion (231) has carbon film, institute It states and is provided between key set (23) and bracket (4) flexible PCB (5), the carbon film and flexible PCB of the key protrusion (231) The contact of plate (5) upper switch position cooperates, and the flexible PCB (5) is electrically connected with first circuit board (3).

8. according to claim 1 to electric energy meter described in any one of 7 claims, it is characterised in that: the one of the cover (2) End is rotatably connected on pedestal (1), and the other end is fixed on the pedestal (1) by connector.

9. electric energy meter according to claim 8, it is characterised in that: the side of cover (2) inner sidewall is provided with hook Portion (24) is provided with the first mounting hole (25) in the other side opposite with the hook portion (24), accordingly, on the pedestal (1) It is provided with the positioning convex portion (11) matched with the hook portion (24), is offered on the other side of the pedestal (1) and the first peace Fill hole (25) corresponding second mounting hole (12), the connector pass through the first mounting hole (25) and the second mounting hole (12) and Cover (2) is fixed on the pedestal (1).

10. electric energy meter according to claim 8, it is characterised in that: be recessed inwardly on the pedestal (1) and be formed with concave portion (13), it is offered MC171 interface (131) in the female portion (13), the female portion (13) are in the outer of MC171 interface (131) It is provided with collar flange (132) week.