Smart energy meter housing

Patent metadata

Field	Value
Publication number	US-11448672-B2
Application number	US-202017122713-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	Dec 15, 2020
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A meter case used with a utility meter is disclosed. The meter shell includes a plurality of snap fit joints assembled on the meter case arranged to engage a module cover to mount the module cover to the meter shell. The module cover further includes wire housing formed along an inner periphery of the module cover that houses a wire having a first end and a second end therein. A metal shield placed behind the meter shell is electrically coupled to a first connector. A terminal electrically connected to the metal shield is arranged to discharge current to ground. An electrical contact electrically coupled to the second end of the wire is arranged to engage the first connector to establish an electrical connection to the metal shield for the discharge to ground of electrostatic currents sensed by wire.

First claim

What is claimed is:

1. A meter case used with a utility meter comprising:
a meter shell comprising a plurality of snap fit joints assembled on the meter case;
a module cover configured to be mounted on the meter shell by engaging the plurality of snap fit joints, the module cover having a wire housing formed along an inner periphery of the module cover;
a wire having a first end and a second end, mounted within the wire housing;
a metal shield placed behind the meter shell, the metal shield being electrically coupled to a first connector;
a terminal electrically connected to the metal shield is configured to discharge current to ground;
an electrical contact portion, electrically coupled to the second end of the wire, the electrical contact portion is configured to engage the first connector to establish an electrical connection to the metal shield for the discharge to ground of electrostatic discharge current sensed by wire; and
an electrical contact insulation chamber having a recess is formed within the module cover, the recess housing the electrical contact portion.

2. The meter case of claim 1 , wherein the electrical contact portion is configured to protrude from the module cover, the electrical contact portion comprising:
a coil spring housed in the recess, the coil spring electrically connected to the second end of the wire; and
a tail end connected to the coil spring.

3. The meter case of claim 2 , wherein the coil spring is configured to exert spring force to the tail end when the module cover is mounted on the meter case.

4. The meter case of claim 2 , wherein the tail end establishes contact with the first connector to transfer electrostatic current discharge to the terminal.

5. The meter case of claim 1 , wherein the module cover is detachable from the meter shell through the snap fit joints.

6. The meter case of claim 1 , wherein the electrical contact portion disengages as the module cover is detached from the meter shell.

7. The meter case of claim 1 , wherein the recess formed in the electrical contact insulation chamber extends from the second end of the wire to the tail end.

8. The meter case of claim 1 , wherein the wire housing is provided with a plurality of grooves and a plurality of locks.

9. The meter case of claim 7 , wherein the plurality of grooves and plurality of locks arrest the movement of the wire.

10. A method for assembling a meter case used with a utility meter, the method comprising:
providing a plurality of snap fit joints on a meter shell;
mounting a module cover on the meter shell by engaging the plurality of snap fit joints, the module cover having a wire housing formed along an inner periphery of the module cover;
laying a wire having a first end and a second end, within the wire housing;
coupling electrically a metal shield placed behind the meter shell, to a first connector;
providing a terminal electrically connected to the metal shield configured to discharge current to ground;
providing an electrical contact portion electrically coupled to the second end of the wire, the electrical contact portion configured to engage with the first connector to establish an electrical connection to the metal shield for the discharge to ground of electrostatic discharge current sensed by the wire; and
forming an electrical contact insulation chamber within the module cover, the insulation chamber providing a recess to house the electrical contact portion.

11. The method of claim 10 , wherein the step of providing an electrical contact portion comprising:
providing a coil spring housed in the recess, electrically connected to the second end of the wire; and
attaching a tail end to the coil spring.

12. The method of claim 11 , wherein the coil spring exert spring force to the tail end when the module cover is mounted on the meter case.

13. The method of claim 10 , further comprises, detaching a module cover from the meter shell by releasing the plurality snap fit joints.

14. The method of claim 13 , wherein detaching a module cover from the meter shell comprises disengaging the electrical contact portion from the first connector.

15. A metering system, comprising:
a communication module configured to transmit and receive data from the network grid;
a meter shell comprising a plurality of snap fit joints;
a module cover configured to shield the communication module has a wire housing formed along an inner periphery of the module cover, and is mounted on the meter shell by engaging the plurality of snap fit joints;
a wire having a first end and a second end is mounted within the wire housing;
a metal shield placed behind the meter shell is electrically connected to a first connector;
a terminal electrically connected to the metal shield is configured to discharge current to ground;
an electrical contact portion is electrically coupled to the second end of the wire, the electrical contact portion is configured to engage the first connector to establish an electrical connection to the metal shield for the discharge to ground of electrostatic discharge current sensed by wire; and
an electrical contact insulation chamber having a recess is formed within the module cover, the recess housing the electrical contact portion.

16. The metering system of claim 15 , wherein the electrical contact portion is configured to protrude from the module cover, the electrical contact portion comprising:
a coil spring housed in the recess, the coil spring electrically connected to the second end of the wire; and
a tail end electrically connected to the coil spring.

17. The metering system of claim 15 , wherein the coil spring is configured to exert spring force to the tail end when the module cover is mounted on the meter case.

18. The metering system of claim 16 , wherein the tail end establishes contact with the first connector to transfer electrostatic discharge to the terminal.

19. The metering system of claim 15 , wherein the module cover is detachable from the meter shell through the snap fit joints.

20. The metering system of claim 15 , wherein the electrical contact portion disengages as the module cover is detached from the meter shell.

Assignees

• Honeywell Int Inc

Inventors

• Agarwal Nitin
• Bezawada Murali Krishna
• Menon Murajith
• Mohan Krishna
• Palle Suresh Kumar
• Patil Ganesh
• Patwardhan Vidyadhar
• Piramanayagam S
• Singhvi Shalu

Classifications

• G01R29/12

  Measuring electrostatic fields {or voltage-potential} · CPC title

• G01R11/04 Primary

  Housings; Supporting racks; Arrangements of terminals · CPC title

• H05K5/0208

  Interlock mechanisms; Means for avoiding unauthorised use or function, e.g. tamperproof · CPC title

• G01R11/24

  Arrangements for avoiding or indicating fraudulent use · CPC title

• G01R22/066 Primary

  Arrangements for avoiding or indicating fraudulent use · CPC title