Adjustable multifunction single-phase electric energy meter connector

Abstract

The application relates to an adjustable multifunctional single-phase electric energy meter connector, a back plate is connected with an electric meter box, the position connected with the electric meter box on the back plate is adjustable along the length direction of the back plate; a sliding plate is slidably connected with the back plate and is kept relatively fixed after sliding to the position, one side of the connector is fixedly connected with an alarm circuit board cover plate, the connector fixedly connected with an alarm circuit board is installed on the sliding plate, the other side of the connector is installed with a connector cover plate, a lead seal cover plate is hingedly connected on the connector cover plate, the alarm circuit board is contained in the space surrounded by the alarm circuit board cover plate and the connector, an alarm circuit board switch, an indicator lamp and a loudspeaker are respectively arranged on the alarm circuit board, the touching end of the alarm circuit board switch is extended from the connector, a connector metal connecting head is installed on the connector, and an external power supply line supplies power for the alarm circuit board through the connector metal connecting head. In the process of quickly and continuously replacing the electric meter, the application can provide sound and light reminders and warning for replacing the electric meter safely.

Description

TECHNICAL FIELD

[0001] The present application relates to a connector for quick installation of an electric energy meter, in particular to an adjustable multifunctional single-phase electric energy meter connector. BACKGROUND

[0002] Electric energy meters are necessary for people in daily work and life. The existing electric energy meters have various specifications, and electric energy meters of various specifications are different in size. Higher requirements are proposed for quick installation, uninterrupted power supply meter replacement and safe use. SUMMARY

[0003] In order to adapt to electric energy meters of various specifications and meet the requirements of quick installation, uninterrupted power supply meter replacement and safe use of electric energy meters, the purpose of the present application is to provide an adjustable multifunctional single-phase electric energy meter connector. The single-phase electric energy meter connector can be adjusted by sliding the sliding plate relative to the back plate, can adapt to electric energy meters of various specifications, and can provide an audible and visual reminder and a warning for safe meter replacement during quick uninterrupted power supply meter replacement.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] The present application comprises a sliding plate, an alarm circuit board cover plate, an alarm circuit board, a connector, a connector cover plate, a lead seal cover plate, a connector metal connecting head and a back plate. The back plate is connected to an electric meter box, and the position connected to the electric meter box on the back plate is adjustable along the length direction of the back plate. The sliding plate is slidingly connected to the back plate and is kept relatively fixed after sliding into position. One side of the connector is fixedly connected with the alarm circuit board cover plate, and the connector fixedly connected with the alarm circuit board is mounted on the sliding plate. The other side of the connector opposite to the one side is mounted with the connector cover plate. The lead seal cover plate is hingedly connected to the connector cover plate. The alarm circuit board is accommodated in the space surrounded by the alarm circuit board cover plate and the connector. The alarm circuit board is respectively provided with an alarm circuit board switch and an alarm device. The touching end of the alarm circuit board switch is extended by the connector. The connector is provided with the same number of connector metal connecting heads as the number of electric energy meter wiring holes, and the connector metal connecting heads are one-to-one corresponding. An external power supply line supplies power to the alarm circuit board through the connector metal connecting heads. When the electric energy meter is plugged into the connector metal connecting head, the touching end of the alarm circuit board switch is touched, and the alarm device is in an off state. When the electric energy meter is pulled out, the touching end of the alarm circuit board switch is separated, and the alarm device sends an alarm information.

[0006] The sliding plate is provided with a strip-shaped hole A, and the back plate is provided with a screw hole corresponding to the strip-shaped hole A. The sliding plate and the back plate are connected through the strip-shaped hole A and the screw hole by inserting an adjusting screw. The adjusting screw is always located in the strip-shaped hole A during the sliding of the sliding plate relative to the back plate, and is threadedly connected with the screw hole after the sliding plate is slid into position, so that the sliding plate and the back plate are kept fixed.

[0007] The back plate is provided with a strip-shaped hole B for connecting with the electric meter box, a back plate screw column for fixing and supporting is arranged between the strip-shaped hole B of the back plate and the electric meter box, and a connecting screw is arranged in the strip-shaped hole B and moves in the strip-shaped hole B, and when the connecting screw is moved to the size of the electric meter box, the connecting screw is screwed and fixed with the electric meter box.

[0008] The back plate is provided with a back plate adjusting column on the side facing the electric meter box, a telescopic column is arranged in the back plate adjusting column and can move relatively, an opening is arranged on the back plate adjusting column to make the back plate adjusting column elastic, and a clamping tooth is arranged in the back plate adjusting column; a plurality of tooth-shaped clamping grooves are arranged on the telescopic column along the moving direction, the telescopic column is extended from the back plate adjusting column and abuts against the electric meter box, and at this time, the clamping tooth is inserted into the tooth-shaped clamping groove at the corresponding position on the telescopic column.

[0009] The sliding plate is provided with a clamping head for slidingly connecting with the electric energy meter, and the sliding plate is further provided with an adapter mounting bottom hole for connecting with an adapter and an electric energy meter mounting bottom hole for connecting with the electric energy meter.

[0010] The alarm circuit board comprises an alarm circuit, a switch circuit, a half-wave rectifier circuit and an alternating current to direct current circuit connected in sequence between 220V voltage and ground wire GND, the alarm device comprises an indicating lamp and a voice circuit, and the alternating current to direct current circuit further connects the voice circuit.

[0011] The switch circuit comprises a back plate switch and a fuse F1 connected in sequence.

[0012] The half-wave rectifier circuit comprises a rectifier diode D1 and a capacitor C1, the input end of the rectifier diode D1 is connected with the fuse F1, the output end of the rectifier diode D1 is connected with one end of the capacitor C1, and the other end of the capacitor C1 is connected with the ground wire GND.

[0013] The input end Vin of the AC / DC chip U1 is connected with the output end of the rectifier diode D1, the GND end of the AC / DC chip is connected with the ground wire GND through a resistor R1 and a reverse diode D2.

[0014] The output end Vout of the AC / DC chip U1 outputs a +5V direct current power source after passing through a rectifier diode D3, the +5V direct current power source is connected between the resistor R1 and the reverse diode D2 after being connected in parallel with a current-limiting resistor R3 and a power inductor L1, the output end Vout of the AC / DC chip U1 is connected between the resistor R1 and the reverse diode D2 through a capacitor C2, a lead wire between the resistor R1 and the reverse diode D2 is connected with the ground wire GND after passing through the indicating lamp, the +5V direct current power source is further grounded through a resistor R2 and a capacitor C3, and the +5V direct current power source further connects the voice circuit.

[0015] The voice circuit comprises a voice chip U2 and a loudspeaker, two pins of the loudspeaker are connected to PWM1 and PWM2 pins of the voice chip U2 respectively, a VDD pin of the voice chip U2 is connected to a +5V DC power supply, a GND pin is grounded, and a filter capacitor C4 is connected between the VDD pin and the GND pin of the voice chip U2.

[0016] One side of the connector is provided with an alarm circuit board switch accommodation slot and a plurality of connector metal connecting head mounting holes corresponding to the number of the connector metal connecting heads, the contact end of the alarm circuit board switch extends from the alarm circuit board switch accommodation slot, the other side of the connector is provided with a loudspeaker hole corresponding to the loudspeaker in the alarm device and a plurality of power supply in-out line via holes corresponding to the number of the connector metal connecting head mounting holes, the top plate of the connector is provided with a connector mounting via hole for connecting with the sliding plate, a connector cover plate mounting bottom hole for connecting with the connector cover plate, a pilot lamp hole corresponding to the pilot lamp in the alarm device, a continuous power supply meter changing device plug-in via hole for connecting with the continuous power supply meter changing device and a power supply in-out line compression screw via hole for fastening the external power supply line and the connector metal connecting head, and the continuous power supply meter changing device plug-in via hole and the power supply in-out line compression screw via hole correspond to the number of the connector metal connecting heads.

[0017] The connector cover plate is provided with a connector cover plate mounting via hole for connecting with the connector, and the connector cover plate is provided with a recess for accommodating a lead seal cover plate, and lead seal cover plate shaft mounting holes are symmetrically arranged on both sides of the recess.

[0018] One side of the connector metal connecting head is plugged into the electric energy meter wiring hole, and the other side is provided with a power supply in-out line bottom hole, the top part of the connector metal connecting head is provided with a continuous power supply meter changing device plug-in hole for connecting with the continuous power supply meter changing device and a power supply in-out line compression screw bottom hole for fastening the external power supply line and the connector metal connecting head, and the bottom part of the connector metal connecting head is provided with an alarm circuit board mounting bottom hole for connecting with the alarm circuit board.

[0019] The advantages and positive effects of the present application are as follows:

[0020] 1. The back plate of the present application is connected with the electric meter box more quickly, conveniently, firmly and durably, and can adapt to electric meter boxes of various specifications and sizes.

[0021] 2. The sliding plate of the present application can slide relative to the back plate to ensure that the window card insertion port of the loaded electric energy meter is aligned with the window card insertion port of the standard electric meter box or the non-standard electric meter box.

[0022] 3. The alarm circuit board of the present application can realize accurate sound and light reminding warning and safe operation by the contact of the electric energy meter and the alarm circuit board switch during the installation and removal of the electric energy meter.

[0023] 4. The present application can realize the fast and accurate installation and removal of the electric energy meter through the metal connector of the connector and the clamping head on the sliding plate.

[0024] 5. The present application can realize the fast and accurate installation and removal of the electric energy meter through the metal connector of the connector and the clamping head on the sliding plate.

[0025] 6. The alarm circuit board of the present application can realize the fast and accurate installation and removal of the electric energy meter through the metal connector of the connector and the clamping head on the sliding plate.

[0026] 7. When the electric meter box is installed on the normally closed travel switch SW1, the normally closed travel switch SW1 is pressed to be disconnected to make the circuit not pass through, when the electric meter box is moved, the normally closed travel switch SW1 restores the normally closed state, the circuit is connected, the indicator light is on, and the voice broadcast prompts the surrounding personnel to appear safety hazard, and avoids non-safety power consumption. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0028] Figure 2 is a structure front view of the present application;

[0029] Figure 3 is a structure left view of the present application;

[0030] Figure 4 is a structure bottom view of the present application;

[0031] Figure 5 is the A-A sectional view in Figure 2 ;

[0032] Figure 6 is a structure front view of the back plate of the present application;

[0033] Figure 7 is a structure front view of the sliding plate of the present application;

[0034] Figure 8 is a structure front view of the alarm circuit board cover plate of the present application;

[0035] Figure 9 is a structure front view of the alarm circuit board of the present application;

[0036] Figure 10 is a structure top view of the alarm circuit board of the present application;

[0037] Figure 11Structure front view of the connector of the present application;

[0038] Figure 12 Structure plan view of the connector of the present application;

[0039] Figure 13 Structure front view of the cover plate of the connector of the present application;

[0040] Figure 14 Structure plan view of the cover plate of the connector of the present application;

[0041] Figure 15 Structure front view of the connector of the present application; Figure 14 Structure left view of the connector of the present application;

[0042] Figure 16 Structure front view of the lead seal cover plate of the present application;

[0043] Figure 17 Structure front view of the metal connector of the connector of the present application;

[0044] Figure 18 Structure plan view of the metal connector of the connector of the present application;

[0045] Figure 19 Structure front view of the telescopic column of the present application;

[0046] Figure 20 Structure sectional view of the telescopic column of the present application;

[0047] Figure 21 Circuit structure diagram of the alarm circuit board of the present application;

[0048] Figure 22 Circuit connection relationship principle diagram of the alarm circuit board of the present application;

[0049] Wherein: 1 is the sliding plate, 2 is the alarm circuit board cover, 3 is the alarm circuit board, 4 is the connector, 5 is the connector cover, 6 is the lead seal cover, 7 is the connector metal connector head, 8 is the back plate, 9 is the strip hole A, 10 is the adjusting screw, 11 is the scale, 12 is the back plate adjusting post, 13 is the back plate screw post, 14 is the notch, 15 is the strip hole B, 16 is the retaining tooth, 17 is the telescopic post, 18 is the adjusting hole, 19 is the screw hole, 20 is the retaining head, 21 is the energy meter mounting hole, 22 is the connector mounting hole, 23 is the alarm circuit board switch, 24 is the indicator light, 25 is the speaker, 26 is the alarm circuit board mounting hole, 27 is the speaker hole, 28 is the connector metal connector head mounting hole, and 29 is the power supply. The following are the through holes for incoming and outgoing lines: 30 is the connector cover plate mounting hole; 31 is the uninterruptible power meter replacement device insertion hole; 32 is the power inlet / outlet line clamping screw through hole; 33 is the connector mounting hole; 34 is the indicator light hole; 35 is the connector cover plate mounting hole; 36 is the lead seal cover plate pivot mounting hole; 37 is the lead seal cover plate pivot; 38 is the power inlet / outlet line bottom hole; 39 is the uninterruptible power meter replacement device insertion hole; 40 is the power inlet / outlet line clamping screw bottom hole; 41 is the alarm circuit board mounting bottom hole; 42 is the alarm circuit board mounting screw; 43 is the incoming line clamping screw; 44 is the toothed slot; 45 is the alarm circuit board switch clearance slot; 46 is the switch circuit; 47 is the half-wave rectifier circuit; 48 is the AC to DC circuit; and 49 is the voice circuit. Detailed Implementation

[0050] The invention will now be described in further detail with reference to the accompanying drawings.

[0051] like Figures 1-20 As shown, the present invention includes a sliding plate 1, an alarm circuit board cover 2, an alarm circuit board 3, a connector 4, a connector cover 5, a lead seal cover 6, a connector metal connector 7, and a back plate 8. The back plate 8 is connected to the meter box, and the position of the connection between the back plate 8 and the meter box is adjustable along the length of the back plate 8. The sliding plate 1 is slidably connected to the back plate 8 and remains relatively fixed after sliding into place. The connector 4 is fixedly connected to the alarm circuit board cover 2 on one side and the connector 4 with the alarm circuit board 3 fixedly connected is mounted on the sliding plate 1. The connector cover 5 is installed on the opposite side of the connector 4. The lead seal cover 6 is hinged to the connector cover 5. The alarm circuit board 3 is housed in the space enclosed by the alarm circuit board cover 2 and the connector 4. The alarm circuit board 3 is provided with an alarm circuit board switch 23 and an alarm device. The alarm device includes an indicator light 24 and a voice circuit 49. The voice circuit 49 includes a voice chip U2 and a speaker 25. Two alarm circuit board mounting holes 26 are also provided on the alarm circuit board 3. The contact end of the alarm circuit board switch 23 extends out from the connector 4. The connector 4 is equipped with a connector metal connector 7 that corresponds to the number of wiring holes of the energy meter. The external power supply line supplies power to the alarm circuit board 3 through the connector metal connector 7.

[0052] In order to align the window card slot of the loaded electric energy meter with the window card slot of the standard electric meter box or the non-standard electric meter box, two strip-shaped holes A9 are formed on the left and right sides of the sliding plate 1, two screw holes 19 are formed on the left and right sides of the back plate 8, the sliding plate 1 and the back plate 8 are connected by inserting the adjusting screw 10 into the corresponding strip-shaped hole A9 and screw hole 19, the window card slot of the loaded electric energy meter is aligned with the window card slot of the standard electric meter box or the non-standard electric meter box by sliding the sliding plate 1, the adjusting screw 10 is always located in the strip-shaped hole A9 during the sliding process of the sliding plate 1 relative to the back plate 8, and is threadedly connected with the screw hole 19 after the sliding plate 1 is slid into position, so that the sliding plate 1 and the back plate 8 are fixed; then the relative position of the visual field window of the electric meter box and the visual field window of the electric energy meter can be marked by the scale scale 11 provided on the back plate 8, and the next batch of installation can be installed according to the memory size of the scale scale 11.

[0053] Two strip-shaped holes B15 for connecting with the electric meter box are formed on the back plate 8, and the two strip-shaped holes B15 are arranged above and below the middle of the back plate 8; a back plate screw column 13 for fixing and supporting is arranged between each strip-shaped hole B15 on the back plate 8 and the electric meter box, a connecting screw is inserted into the strip-shaped hole B15, the connecting screw passes through the back plate screw column 13 and moves in the strip-shaped hole B15, and is tightly fixed with the electric meter box when it is moved to adapt to the size specification of the electric meter box. Through the design of the strip-shaped hole B15, the back plate 8 can be connected with the standard single-meter and four-meter electric meter box and the non-standard single-meter and four-meter electric meter box. The two ends of the back plate screw column 13 abut against the back plate 8 and the electric meter box, respectively, a through hole is formed in the middle of the back plate screw column 13, the through hole can be a light hole or a threaded hole, and the connecting screw passes through the strip-shaped hole 15 on the back plate 8, the back plate screw column 13 and the electric meter box in sequence. The back plate 8 of the embodiment further comprises a scale scale 11, and the corresponding scale of each electric meter box can be recorded after the electric meter box is adjusted into position, so that the corresponding scale can be adjusted to quickly position the next time.

[0054] The back plate 8 of the embodiment is provided with back plate adjusting columns 12 at four corners of one side of the back plate 8 facing the meter box, and the back plate 8 is provided with adjusting holes 18 at positions corresponding to the back plate adjusting columns 12, the adjusting holes 18 are in communication with the inside of the back plate adjusting columns 12, and the back plate adjusting columns 12 are provided with telescopic columns 17 which can move relatively and are inserted in the back plate adjusting columns 12; the length of the back plate adjusting columns 12 is less than the length of back plate screw columns 13, and the back plate adjusting columns 12 are provided with notches 14 which make the back plate adjusting columns 12 have elasticity, the back plate adjusting columns 12 of the embodiment are rectangular, the notches 14 are provided at two wide sides of the rectangular along the height direction, thus dividing the lower part of the back plate adjusting columns 12 into four parts, and the upper part of the back plate adjusting columns 12 is provided with clamping teeth 16; the telescopic columns 17 are provided with a plurality of tooth-shaped clamping grooves 44 along the moving direction (i.e. the height direction of the telescopic columns 17), the telescopic columns 17 are inserted into the back plate adjusting columns 12, and then are extended out of the back plate adjusting columns 12 and abut against the meter box, in the process of extension and contraction of the telescopic columns 17, the four parts of the back plate adjusting columns 12 are pushed to expand outward, and when the telescopic columns 17 are extended to the position, the clamping teeth 16 are inserted into a tooth-shaped clamping groove 44 at a corresponding position on the telescopic columns 17, and the four parts of the back plate adjusting columns 12 are reset by elasticity and clamp the telescopic columns 17.

[0055] The lower part of the slide plate 1 of the embodiment is provided with electric energy meter installation bottom holes 21 which are symmetrical and are connected with electric energy meters, and the slide plate 1 is provided with two connector installation bottom holes 22 which are symmetrical and are connected with connectors 4 below the electric energy meter installation bottom holes 21; the upper part of the slide plate 1 is provided with clamping heads 20 which are used for sliding and inserting with the electric energy meters.

[0056] The slide plate 1 of the embodiment is provided with two through holes which are symmetrical and correspond to the two connector installation bottom holes 22; the slide plate 2 is ultrasonically hot-melted with the bottom part of the connector 4, so as to realize the packaging and shielding of the alarm circuit board 3.

[0057] The connector metal connecting heads 7 of the embodiment are four, one side of each of the connector metal connecting heads 7 is inserted into the electric energy meter wiring hole, the other side of each of the connector metal connecting heads 7 is provided with a power supply in-out line bottom hole 38, the top part of each of the connector metal connecting heads 7 is provided with a uninterrupted power supply meter changing device insertion hole 39 which is used for connecting with the uninterrupted power supply meter changing device and a power supply in-out line pressing screw bottom hole 40 which is used for fastening the external power supply line with the connector metal connecting head 7, and the bottom part of each of the connector metal connecting heads 7 is provided with an alarm circuit board installation bottom hole 41 which is used for connecting with the alarm circuit board 3.

[0058] The alarm circuit board switch of the connector 4 of the embodiment is provided with an alarm circuit board switch accommodation slot 45 on one side, and the same number of connector metal connecting head mounting holes 28 corresponding to the connector metal connecting heads 7. The contact end of the alarm circuit board switch 23 is extended from the alarm circuit board switch accommodation slot 45. The other side of the connector 4 is provided with a speaker hole 27 corresponding to the speaker 25 and the same number of power supply in-out line vias 29 corresponding to the connector metal connecting head mounting holes 28. The top plate of the connector 4 is provided with a connector mounting via 33 for connecting with the sliding plate 1, a connector cover plate mounting bottom hole 30 for connecting with the connector cover plate 5, an indicator light hole 34 corresponding to the indicator light 24, a continuous power supply change device plug-in via 31 for connecting with the continuous power supply change device, and a power supply in-out line compression screw via 32 for fastening the external power supply line with the connector metal connecting head 7. The continuous power supply change device plug-in via 31 and the power supply in-out line compression screw via 32 are the same number as the connector metal connecting heads 7 and correspond to each other. The four connector metal connecting heads 7 of the embodiment are inserted into the four connector metal connecting head mounting holes 28. The four power supply in-out line compression screws 43 are connected to the power supply in-out line compression screw bottom holes 40 on the four connector metal connecting heads 7 through the four power supply in-out line compression screw vias 32, so as to connect the external power supply line with the connector metal connecting head 7. The four pins of the continuous power supply change device are inserted into the four continuous power supply change device plug-in vias 31 on the connector 4, and then connected to the continuous power supply change device plug-in hole 39 on the four connector metal connecting heads 7. The continuous power supply change device is a prior art, which will not be described here. The alarm circuit board 3 and the connector 4 are used to install the speaker 25 into the speaker hole 27, install the indicator light 24 into the indicator light hole 34, and install the alarm circuit board switch 23 into the position through the alarm circuit board switch accommodation slot 45. The connector cover plate mounting bottom holes 30 are provided on both sides of the top plate of the connector 4, and two connector mounting vias 33 are provided between the two sides. The connector 4 and the sliding plate 1 are fixed through the screws passing through the connector mounting via 33 and the connector mounting bottom hole 22. The indicator light hole 34 is located between the two connector mounting vias 33.

[0059] The connector cover plate 5 of the embodiment is provided with connector cover plate mounting vias 35 on both sides for connecting with the connector 4. The connector cover plate 5 between the two connector cover plate mounting vias 35 is provided with a recess for accommodating the lead seal cover plate 6. Lead seal cover plate shaft mounting holes 36 are symmetrically provided on both sides of the recess. The connector cover plate 5 and the connector 4 are fixed through the screws passing through the connector cover plate mounting via 35 and the connector cover plate mounting bottom hole 30. The lead seal cover plate 6 of the embodiment is provided with lead seal cover plate shafts 37 symmetrically provided on both sides and connected with the lead seal cover plate shaft mounting holes 36. The lead seal cover plate 6 is connected with the lead seal cover plate shaft mounting holes 36 on both sides of the connector cover plate 5 through the lead seal cover plate shafts 37 on both sides, so as to realize 180° flip rotation.

[0060] As Figure 21 、 Figure 22 shown, the circuit structure and circuit connection relationship principle diagram of the alarm circuit board 3 of the present application. The connection relationship in the figure includes: the switch circuit 46, the half-wave rectifier circuit 47, the AC-DC circuit 48 connected in turn between the 220V voltage and the ground wire GND, and the AC-DC circuit 48 also connects the voice circuit 49.

[0061] The switch circuit 46 includes the alarm circuit board switch 23 (i.e. the normally closed travel switch SW1 in the figure) and the fuse F1 connected in turn. When the electric energy meter is plugged with the connector metal connecting head 7, the normally closed travel switch SW1 is touched and pressed, so that the circuit is disconnected, and the indicator light 24 and the loudspeaker 25 are in the off state; when the electric meter box is moved, the normally closed travel switch SW1 is not pressed, so the normally closed travel switch SW1 returns to the normally closed state, the circuit is connected, the indicator light 24 is on, and the loudspeaker 25 plays a voice prompt.

[0062] The half-wave rectifier circuit 47 includes the rectifier diode D1 and the capacitor C1, the input end of the rectifier diode D1 is connected with the fuse F1, the output end of the rectifier diode D1 is connected with one end of the capacitor C1, and the other end of the capacitor C1 is connected with the ground wire GND.

[0063] The AC-DC circuit 48 includes: the input end Vin of the AC / DC chip is connected with the output end of the rectifier diode D1; the GND end of the AC / DC chip is connected with the ground wire GND through the resistor R1 and the reverse diode D2; the output end Vout of the AC / DC chip is connected with the resistor R1 and the reverse diode D2 through the rectifier diode D3 after outputting +5V DC power supply, and the +5V DC power supply is connected between the resistor R1 and the reverse diode D2 in parallel after passing through the current-limiting resistor R3 and the power inductor L1; the output end Vout of the AC / DC chip is connected between the resistor R1 and the reverse diode D2 through the capacitor C2; the lead wire between the resistor R1 and the reverse diode D2 is connected with the ground wire GND after passing through the indicator light RED1; the +5V DC power supply is also grounded through the resistor R2 and the capacitor C3; and the +5V DC power supply is also connected with the voice circuit 49.

[0064] The voice circuit 49 includes the voice chip U2 and the loudspeaker 25 (i.e. P3 in the figure), the two pins of the loudspeaker P3 are connected with the PWM1 and PWM2 pins of the voice chip U2 respectively, the VDD pin of the voice chip U2 is connected with the +5V DC power supply, the GND pin is grounded, and the filter capacitor C4 is connected between the VDD pin and the GND pin of the voice chip U2.

[0065] The capacitor C1 is an electrolytic capacitor, the capacitor C2 is a patch capacitor, the model of the U1 chip is TT119, the model of the voice broadcast chip U2 is NY3M016AE8, the voice integrated storage chip can store 16 seconds or an extended programmable control chip. The resistance R2 is a constant voltage resistance. The indicator light RED1 (i.e. the indicator light 24) is an LED indicator light, a red or white or other color indicating light source. The capacitor C3 is a voltage stabilizing filter capacitor. The capacitor C4 is a high-frequency filter capacitor.

[0066] The four connector metal terminals 7 of the embodiment are respectively a live wire outgoing terminal, a live wire incoming terminal, a zero wire outgoing terminal and a zero wire incoming terminal, and are all connected to the electric meter. The live wire outgoing terminal and the zero wire outgoing terminal are also respectively connected to the L phase and the N phase in the circuit schematic diagram; that is, the two alarm circuit board mounting screws 42 are connected to the alarm circuit board mounting bottom holes 41 on the live wire incoming terminal and the zero wire incoming terminal through the alarm circuit board mounting holes 26.

[0067] The working principle of the present application is as follows:

[0068] When the power is not interrupted, the power change device plug is inserted through the power change device plug insertion hole 31 on the connector 4, and then connected to the power change device plug insertion hole 39 on the connector metal terminal 7, so as to realize uninterrupted power change.

[0069] Two connecting screws are inserted into the two strip-shaped holes B15 on the back plate 8, and the back plate screw column 13 is installed on the connecting screws. After the connecting screws are adjusted in place in the strip-shaped holes B15 according to the electric meter box, the connecting screws are tightened, and the two ends of the back plate screw column 13 are respectively in abutment with the electric meter box and the back plate 8. Then, the four telescopic columns 17 are respectively inserted into the back plate adjusting columns 12 at the four corners of the back plate 8, so that the telescopic columns 17 are in abutment with the electric meter box after being extended from the back plate adjusting columns 12.

[0070] The electric energy meter is slidably connected to the chuck 20 and the connector metal terminal 7. The four connector metal terminals 7 are on the same axis as the electric energy meter wiring holes, the electric energy meter pressing screw is connected to the electric energy meter mounting bottom hole 21 on the sliding plate 1 through the electric energy meter mounting hole, and the connector metal terminal 7 is pressed tightly by the electric energy meter pressing screw, so as to realize the installation of the electric energy meter. The sliding plate 1 is slid so that the electric energy meter view window insertion slot is aligned with the window insertion slot of the electric meter box, and the adjusting screw 10 is tightened.

[0071] The external power supply line enters the power supply in-out hole 38 of the metal connector 7 of the connector 4 through the power supply in-out hole 29 of the connector 4, and the power supply in-out hole compression screw 43 is connected to the power supply in-out hole compression screw bottom hole 40 of the metal connector 7 of the connector 4 after passing through the power supply in-out hole compression screw hole 32 of the connector 4, so as to fasten the external power supply line; the external power supply line realizes the power supply of the alarm circuit board 3 through the metal connector 7 of the connector and the alarm circuit board mounting screw 42. When the electric energy meter is slidably connected to the connector 20 and the metal connector 7, the bottom of the electric energy meter compresses the alarm circuit board switch 23 to realize voice warning broadcast and light-off of the indicator light 24. When the electric energy meter is slidably pulled out, the bottom of the electric energy meter is separated from the alarm circuit board switch 23 and stops compression, and the alarm device sends an alarm information, that is, the indicator light 24 is lighted and the voice warning broadcast is sent by the loudspeaker 25.

[0072] Circuit working principle:

[0073] When the input AC 220V is long-closed through the normally closed travel switch SW1 (alarm circuit board switch 23), at this time, the 7th and 8th pins of the voice IC chip U2 output PWM signals to drive the loudspeaker P3 (loudspeaker 25), at this time, the loudspeaker P3 starts to send a voice warning. Again, when the input AC 220V passes through the normally closed travel switch SW1 and then the fuse F1, when the rear-end short-circuit current exceeds 500mA, the fuse F1 is burned out, the AC 220V passes through the fuse F1 to the rectifier diode D1, and then inputs to the AC-to-DC IC chip U1, when the output voltage of the AC-to-DC IC chip U1 is sensed by the output pin Vout, when the power inductance L1 reaches the designed value, the MOS inside the AC-to-DC IC chip U1 is turned off, the resistor R2 and the chip capacitor C2 form a power consumption Rcs, 220V N is a reference GND, then through the reverse recovery diode D2, then through the current-limiting resistor R1 to the GND pin of the AC-to-DC IC chip U1, the Vout output of the AC-to-DC IC chip U1 is connected to the rectifier diode D3, and then a 5V voltage is obtained, then the 5V voltage passes through the current-limiting resistor R3 to the positive electrode of the indicator light 24 to realize the lightening of the indicator light RED1, the resistor R2 is a constant voltage resistor, the capacitor C3 is a voltage stabilizing filter capacitor, and the capacitor C4 is a high-frequency filter capacitor. After the voltage stabilizing filter capacitor C3 and the high-frequency filter capacitor C4 are stabilized and filtered, the 6th pin of the voice broadcast chip U2 is connected, at this time, the voice broadcast chip U2 outputs a PWM signal, and the PWM drives the loudspeaker P3 to start to send a voice.

[0074] The main control mode is that when the electric energy meter is removed from the meter seat, the normally closed power switch is returned to the power-on state, and at the same time, the voltage stabilizing power supply works to supply power to the LED and the voice broadcast chip, the LED is constantly lighted during the removal of the meter, and the voice broadcast is once or continuously as an operation warning.

Claims

1. An adjustable multifunction single-phase electric energy meter connector, characterized in that: The utility model relates to an alarm circuit board fixing device for electric energy meter, which comprises a sliding plate (1), an alarm circuit board cover plate (2), an alarm circuit board (3), a connector (4), a connector cover plate (5), a lead seal cover plate (6), a connector metal connecting head (7) and a back plate (8), wherein the back plate (8) is connected with an electric meter box, the position of the back plate (8) connected with the electric meter box is adjustable along the length direction of the back plate (8); the sliding plate (1) is slidably connected with the back plate (8) and is kept relatively fixed after sliding into position; one side of the connector (4) is fixedly connected with the alarm circuit board cover plate (2), and the connector (4) with the alarm circuit board (3) fixedly connected thereto is installed on the sliding plate (1); the other side of the connector (4) is installed with the connector cover plate (5); the lead seal cover plate (6) is hingedly connected to the connector cover plate (5); the alarm circuit board (3) is accommodated in the space surrounded by the alarm circuit board cover plate (2) and the connector (4); the alarm circuit board (3) is respectively provided with an alarm circuit board switch (23) and an alarm device; the touching end of the alarm circuit board switch (23) is extended from the connector (4); the connector metal connecting head (7) corresponding to the number of electric energy meter wiring holes is installed on the connector (4); the external power supply line supplies power to the alarm circuit board (3) through the connector metal connecting head (7); when the electric energy meter is plugged into the connector metal connecting head (7), the touching end of the alarm circuit board switch (23) is touched, and the alarm device is in the closed state; when the electric energy meter is pulled out, the touching end of the alarm circuit board switch (23) is separated, and the alarm device sends an alarm information.

2. The adjustable multi-functional single-phase electric energy meter connector according to claim 1, characterized in that: A strip-shaped hole A (9) is formed in the sliding plate (1), a screw hole (19) is formed in the back plate (8) corresponding to the strip-shaped hole A (9), and the sliding plate (1) and the back plate (8) are connected through an adjusting screw (10) inserted into the strip-shaped hole A (9) and the screw hole (19); the adjusting screw (10) is always located in the strip-shaped hole A (9) during the sliding process of the sliding plate (1) relative to the back plate (8), and is threadedly connected with the screw hole (19) after the sliding plate (1) is slid into position, so that the sliding plate (1) and the back plate (8) are kept fixed.

3. The adjustable multi-functional single-phase electrical energy meter connector of claim 1, wherein: A strip-shaped hole B (15) for connecting with the electric meter box is formed in the back plate (8), a back plate screw column (13) for fixing and supporting is arranged between the strip-shaped hole B (15) and the electric meter box, a connecting screw is inserted into the strip-shaped hole B (15), the connecting screw passes through the back plate screw column (13) and moves in the strip-shaped hole B (15), and when the size specification of the electric meter box is adapted, the connecting screw is tightly fixed with the electric meter box.

4. The adjustable multi-function single-phase electrical energy meter connector of claim 1, wherein: The back plate (8) is provided with a back plate adjusting column (12) on the side facing the electric meter box, a telescopic column (17) is inserted in the back plate adjusting column (12) and can be relatively moved, an opening (14) is formed in the back plate adjusting column (12) to make the back plate adjusting column (12) elastic, and a clamping tooth (16) is arranged in the back plate adjusting column (12); a plurality of tooth-shaped clamping grooves (44) are arranged on the telescopic column (17) along the moving direction, the telescopic column (17) is extended from the back plate adjusting column (12) and abuts against the electric meter box, and the clamping tooth (16) is inserted into the tooth-shaped clamping groove (44) at the corresponding position on the telescopic column (17) at this time.

5. The adjustable multi-function single-phase electrical energy meter connector of claim 1, wherein: The sliding plate (1) is provided with a clamping head (20) for slidingly connecting with the electric energy meter, and is further provided with an adapter mounting bottom hole for connecting with the adapter (4) and an electric energy meter mounting bottom hole for connecting with the electric energy meter.

6. The adjustable multi-function single-phase electrical energy meter connector of claim 1, wherein: The alarm circuit board (3) comprises an alarm circuit, a switch circuit (46), a half-wave rectifier circuit (47) and an AC-DC circuit (48) connected in sequence between 220V voltage and ground wire GND, and the alarm device comprises an indicating lamp (24) and a voice circuit (49).

7. The adjustable multi-function single-phase electrical energy meter connector of claim 6, wherein: The switch circuit (46) comprises a switch (23) and a fuse F1 connected in sequence.

8. The adjustable multi-function single-phase electrical energy meter connector of claim 7, wherein: The half-wave rectifier circuit (47) comprises a rectifier diode D1 and a capacitor C1, the input end of the rectifier diode D1 is connected with the fuse F1, the output end of the rectifier diode D1 is connected with one end of the capacitor C1, and the other end of the capacitor C1 is connected with the ground wire GND.

9. The adjustable multi-function single-phase electrical energy meter connector of claim 8, wherein: The input end Vin of an AC / DC chip U1 of the AC-DC circuit (48) is connected with the output end of the rectifier diode D1; the GND end of the AC / DC chip is connected with the ground wire GND through a resistor R1 and a reverse diode D2; The output end Vout of the AC / DC chip U1 outputs a +5V DC power supply after passing through a rectifier diode D3, the +5V DC power supply is connected between the resistor R1 and the reverse diode D2 after being connected in parallel with a current-limiting resistor R3 and a power inductor L1; the output end Vout of the AC / DC chip U1 is connected between the resistor R1 and the reverse diode D2 through a capacitor C2; a lead wire between the resistor R1 and the reverse diode D2 is connected with the ground wire GND after passing through the indicating lamp (24); the +5V DC power supply is further grounded through the resistor R2 and the capacitor C3; and the +5V DC power supply is further connected with the voice circuit (49).

10. The adjustable multi-function single-phase electrical energy meter connector of claim 9, wherein: The voice circuit (49) comprises a voice chip U2 and a loudspeaker (25), two pins of the loudspeaker (25) are connected with PWM1 and PWM2 pins of the voice chip U2 respectively, the VDD pin of the voice chip U2 is connected with the +5V DC power supply, the GND pin is grounded, and a filter capacitor C4 is connected between the VDD pin and the GND pin of the voice chip U2.

11. The adjustable multi-function single-phase electrical energy meter connector of claim 1, wherein: The side of the connector (4) is provided with an alarm circuit board switch allowing slot (45) and the same number of connector metal connecting head (7), one-to-one corresponding connector metal connecting head mounting hole (28), the alarm circuit board switch (23) by the alarm circuit board switch allowing slot (45) to extend, the other side of the connector (4) is provided with the corresponding speaker hole (27) of the alarm device in the speaker (25) and the same number of power supply in and out line via hole (29) corresponding to the connector metal connecting head mounting hole (28), the top plate of the connector (4) is provided with connector mounting via hole for connecting with the slide plate (1), connector cover plate mounting bottom hole for connecting with the connector cover plate (5), indicator lamp hole (34) corresponding to the indicator lamp (24) in the alarm device, uninterrupted power supply meter changing device plug-in via hole (31) for connecting with uninterrupted power supply meter changing device and power supply in and out line compression screw via hole (32) for fastening the external power supply line and the connector metal connecting head (7), the uninterrupted power supply meter changing device plug-in via hole (31) and the power supply in and out line compression screw via hole (32) are the same number of connector metal connecting heads (7), one-to-one corresponding.

12. The adjustable multi-function single-phase electrical energy meter connector of claim 1, wherein: The connector cover plate (5) is provided with a connector cover plate mounting via hole for connecting with the connector (4), the connector cover plate (5) is provided with a recess for accommodating the lead seal cover plate (6), the both sides of the recess are symmetrically provided with lead seal cover plate shaft mounting hole (36); the both sides of the lead seal cover plate (6) are symmetrically provided with lead seal cover plate shaft (37) rotatably connected with the lead seal cover plate shaft mounting hole (36).

13. The adjustable multi-function single-phase electrical energy meter connector of claim 1, wherein: The side of the connector metal connecting head (7) is plugged into the electric energy meter wiring hole, the other side is provided with a power supply in and out line bottom hole (38), the top of the connector metal connecting head (7) is provided with an uninterrupted power supply meter changing device plug-in hole (39) for connecting with the uninterrupted power supply meter changing device and a power supply in and out line compression screw bottom hole (40) for fastening the external power supply line and the connector metal connecting head (7), the bottom of the connector metal connecting head (7) is provided with an alarm circuit board mounting bottom hole (41) for connecting with the alarm circuit board (3).

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