CN217739275U - Electric energy meter - Google Patents
Electric energy meter Download PDFInfo
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- CN217739275U CN217739275U CN202221386102.8U CN202221386102U CN217739275U CN 217739275 U CN217739275 U CN 217739275U CN 202221386102 U CN202221386102 U CN 202221386102U CN 217739275 U CN217739275 U CN 217739275U
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Abstract
The utility model discloses an electric energy meter, wherein, the electric energy meter comprises a shell, a meter main body and a conductive piece, the shell is provided with a cavity; the electric meter main body is arranged in the cavity; one end of the conductive piece is in contact with the inner wall surface of the cavity, and the other end of the conductive piece is electrically connected to the grounding wire of the ammeter main body. The utility model discloses technical scheme can prevent strong electrostatic interference.
Description
Technical Field
The utility model relates to an electric energy meter technical field, in particular to electric energy meter.
Background
Along with the continuous development of social economy and the improvement of the living standard of people, the demand of various industries on electric power is more and more large, and the management and control of the electric energy through the metering data of the electric energy meter are more and more important.
The conventional electric energy meter can prevent contact discharge of 8kV and air discharge of 15kV, meets the standard requirements of IEC (International Electrotechnical Commission), but has electricity stealing behavior in less developed areas in south-east Asia, so that a user uses a strong static electricity (more than 15 kV) generating device to shock the electric energy meter, damages the electric energy meter and causes abnormal charging of the electric energy meter. Therefore, an electric energy meter capable of eliminating strong electrostatic interference is needed.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an electric energy meter aims at preventing strong electrostatic interference.
In order to achieve the above object, the utility model provides an electric energy meter includes:
the shell is provided with a cavity;
an electric meter body mounted within the cavity; and
and one end of the conductive piece is in contact with the inner wall surface of the cavity, and the other end of the conductive piece is electrically connected to the grounding wire of the electric meter main body.
Optionally, the electric meter main body is provided with an electrostatic sensitive region, a pasting region arranged opposite to the electrostatic sensitive region is formed on an inner wall surface of the cavity, a pasting surface is formed at one end of the conductive piece, which is in contact with the inner wall surface of the cavity, and the pasting surface is pasted on the pasting region.
Optionally, the housing comprises:
a first housing having the attachment region formed on an inner wall surface thereof; and
the second shell is internally provided with the electric meter main body so that the static sensitive area faces the pasting area;
the first shell covers the second shell to form the cavity with the second shell in an enclosing mode.
Optionally, the conductive member includes:
the conductive patch is attached to the attaching area; and
the contact assembly is fixed on the electric meter main body and is installed on the second shell through the electric meter main body, the contact assembly is arranged opposite to the conductive patch, and the contact assembly is electrically connected to a grounding wire of the electric meter main body;
when the first shell covers the second shell, the contact assembly touches the conductive patch to be electrically conducted with the conductive patch.
Optionally, the contact assembly is elastic and stretchable in the length direction;
the conductive patch presses against the contact assembly to compress the contact assembly to maintain contact against the conductive patch.
Optionally, the contact assembly comprises:
a conductive rod;
one end of the spring is connected with the conducting rod; and
the conductive seat is arranged on the electric meter main body and is electrically connected with a grounding wire of the electric meter main body, and one surface of the conductive seat, which is far away from the electric meter main body, is connected with the other end of the spring;
wherein, the conducting patch extrudes the conducting rod to deform the spring.
Optionally, the conductive patch is a copper foil.
Optionally, the electricity meter body comprises:
a motherboard on which the contact assembly is mounted, the motherboard forming the static-electricity-sensitive region; and
the wiring bar, wiring bar electric connection the mainboard, the wiring bar is used for connecting the earth connection.
Optionally, the main board is provided with a pad, and the contact assembly is welded on the pad.
Optionally, the motherboard is provided with a static electricity detection circuit, and the static electricity detection circuit is used for detecting the number of times and/or the occurrence time of static electricity.
The utility model discloses technical scheme electric energy meter includes the shell, ammeter main part and electrically conductive piece, the shell is equipped with the cavity, the ammeter main part is installed in the cavity, one end through electrically conductive piece contacts with the internal face of cavity, the other end electric connection of electrically conductive piece is in the earth connection of ammeter main part, thereby when the shell received strong static electric shock, electrically conductive piece can guide strong static to flow from the earth connection, thereby avoided the inside components and parts of electric energy meter to receive the electric shock of strong static, the inside components and parts of electric energy meter have been protected, and then can prevent strong electrostatic interference.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the electric energy meter of the present invention;
FIG. 2 is an exploded view of the electric energy meter according to the present embodiment;
fig. 3 is a partially enlarged view of a point a in fig. 2.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
10 | |
| 10a | Cavity body | 11 | |
| 13 | |
30 | Ammeter |
| 30a | Static |
31 | Main board |
| 33 | |
50 | Conductive member |
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Although a general electric energy meter can prevent contact discharge of 8kV and air discharge of 15kV and meets the standard requirements of IEC (International Electrotechnical Commission), since electricity stealing behavior exists in less developed areas in south-east Asia, a user uses a strong static electricity (more than 15 kV) generating device to shock the electric energy meter, and the electric energy meter is damaged, so that the charging of the electric energy meter is abnormal. Therefore, an electric energy meter capable of eliminating strong electrostatic interference is needed.
To the technical problem mentioned above, the utility model provides an electric energy meter aims at preventing strong electrostatic interference.
It is understood that the electric energy meter is an instrument for measuring electric energy, and is also called a watt-hour meter, a fire meter and a kilowatt-hour meter, and refers to an instrument for measuring various electric quantities.
The specific structure of the electric energy meter proposed by the present invention will be described in the following embodiments:
as shown in fig. 1 and 2, in an embodiment of the present invention, the electric energy meter 100 includes a housing 10, a meter main body 30, and a conductive member 50, wherein the housing 10 is provided with a cavity 10a. The meter body 30 is mounted in the cavity 10a. One end of the conductive member 50 contacts the inner wall surface of the cavity 10a, and the other end of the conductive member 50 is electrically connected to the ground line of the electricity meter main body 30.
At this moment, it can be understood that, according to the technical scheme of this embodiment, the electric energy meter 100 includes the shell 10, the electric meter main body 30 and the conductive piece 50, the shell 10 is equipped with the cavity 10a, the electric meter main body 30 is installed in the cavity 10a, one end through the conductive piece 50 contacts with the inner wall surface of the cavity 10a, the other end electric connection of the conductive piece 50 is in the ground wire of the electric meter main body 30, thereby when the shell 10 receives the strong static electricity shock, the conductive piece 50 can guide the strong static electricity to flow out from the ground wire, thereby the electric shock of the strong static electricity received by the components inside the electric energy meter 100 has been avoided, the components inside the electric energy meter 100 have been protected, and then the strong static electricity interference can be prevented.
In addition, compared with the common electric energy meter 100 which depends on the plastic shell 10 to prevent contact discharge, only static within 8kV can be prevented, that is, static discharge higher than or equal to 8kV cannot be prevented, and meanwhile, static can be discharged by air insulation formed by the spacing distance between the components and the shell 10, only static within 15kV can be prevented, that is, static discharge higher than or equal to 15kV (static higher than 15kV can break through air) cannot be prevented.
In addition, the ground wire of the main body of the electric energy meter 100 may be a power wire or a ground terminal that the electric energy meter 100 has, such as a ground wire on the three-phase electric energy meter 100; the method may be mainly used when the electric energy meter 100 itself does not have a ground wire or a ground terminal, in which one end of the wire is electrically connected to the electric energy meter 100 main body, and the other end of the wire is led out from the electric energy meter 100 to be electrically connected to the ground wire of the house or to the ground.
As shown in fig. 2 and 3, in an embodiment of the present invention, the electric meter main body 30 has an electrostatic sensing region 30a, an attaching region (not shown) opposite to the electrostatic sensing region 30a is formed on an inner wall surface of the cavity 10a, and an attaching surface is formed at one end of the conductive member 50 contacting the inner wall surface of the cavity 10a, and the attaching surface is attached to the attaching region.
It is understood that, in the present embodiment, the static electricity sensitive region 30a refers to a region where component devices sensitive to static electricity (susceptible to static electricity) are distributed on the electricity meter main body 30, for example: the main board 31 is provided with a chip, a capacitor, and other regions. Of course, in practical applications, the static electricity sensitive region 30a may be divided according to the requirements of practical application scenarios. The pasting region is a region of the inner wall surface of the cavity 10a opposite to the electrostatic sensitive region 30a, i.e., a region where the electrostatic region is directly opposite to the inner wall surface of the housing 10. A pasting surface is formed at one end of the conductive member 50 contacting the inner wall surface of the cavity 10a, and the pasting surface is pasted on the pasting region. Like this, can electrically conductive 50 the subsides face of applying "cover" the sensitive region 30a of static to guarantee that the sensitive region 30a of static does not receive external static interference, improved the reliability that electrically conductive 50 protected static, and, electrically conductive 50 pastes the region of applying at the internal face of cavity 10a with the form of face, compares the form of some, the utility model discloses an area of protecting static has been enlarged to the embodiment, has improved the validity of electrostatic protection. On the other hand, the attaching region to which the conductive member 50 is attached is selected according to the static electricity sensitive region 30a, so that the usage of raw materials is reduced and the cost is saved on the premise of protecting the static electricity sensitive region 30a of the electricity meter main body 30.
As shown in fig. 2 and 3, in an embodiment of the present invention, the outer shell 10 includes a first shell 11 and a second shell 13, and an inner wall surface of the first shell 11 is formed with a pasting region. The meter main body 30 is installed in the second housing 13 such that the static electricity sensitive region 30a is disposed toward the attaching region. The first housing 11 covers the second housing 13 to form a cavity 10a with the second housing 13.
It will be appreciated that in this embodiment, the second housing 13 is typically hung from a wall, while the first housing 11 is typically facing outwardly towards the user. Therefore, the first housing 11 is most vulnerable to external electrostatic shock, so that the conductive member 50 is only attached to the first housing 11, and the conductive member 50 may not be attached to the second housing 13, thereby saving materials and reducing costs.
It should be added that the first housing 11 and the second housing 13 are usually made of plastic material, so as to facilitate injection molding.
As shown in fig. 2 and 3, in an embodiment of the present invention, the conductive element 50 includes a conductive patch (not shown) and a contact assembly (not labeled), and the conductive patch is attached to the attaching area. The contact assembly is fixed on the meter main body 30 to be mounted on the second housing 13 through the meter main body 30, the contact assembly is disposed opposite to the conductive patch, and the contact assembly is electrically connected to a ground line of the meter main body 30. When the first housing 11 covers the second housing 13, the contact element touches the conductive patch to electrically connect with the conductive patch.
It can be understood that, in this embodiment, the first casing 11 and the second casing 13 are detachable, the conductive patch is attached to the inner wall surface of the first casing 11, the contact assembly is fixed on the electric meter main body 30, the electric meter main body 30 is fixed on the second casing 13, when the second casing 13 is covered by the first casing 11, the contact assembly touches the conductive patch, so as to be electrically conducted with the conductive patch, when the first casing 11 is subjected to a strong electrostatic shock, the conductive patch can guide a strong electrostatic current to the contact assembly, and the strong electrostatic current flows out from the ground wire through the contact assembly, so that the components inside the electric energy meter 100 are prevented from being subjected to the strong electrostatic shock, the components inside the electric energy meter 100 are protected, and further, the strong electrostatic interference can be prevented. So, adopt the electrically conductive connected mode of conducting strip and contact module contact, compare in connection of electric lines or fixed connection between conducting strip and contact module, the utility model discloses an this embodiment can not let first casing 11 and second casing 13 separate or separate too far because conducting strip and contact module need be connected, has made things convenient for the dismantlement separation of first casing 11 and second casing 13 to conducting strip and contact module independently install separately on the casing of difference, and easy to assemble raises the efficiency.
It should be added that the conductive patches may be conductive sheet materials such as copper foil, aluminum sheet, etc., and those skilled in the art can reasonably select one or more combinations according to the needs of the practical application scenarios, which are not described herein any more.
As shown in fig. 2 and 3, in an embodiment of the present invention, the contact assembly has elasticity and is retractable in the length direction. The conductive patch presses the contact assembly to compress the contact assembly to maintain the contact assembly against the conductive patch.
In this embodiment, the conductive patch presses the contact assembly to compress the contact assembly to keep the contact assembly abutting against the conductive patch, so that after the first housing 11 and the second housing 13 are assembled, the contact assembly can be kept in contact with the conductive patch by virtue of the elastic force of the contact assembly, the reliability of the contact between the conductive patch and the contact assembly is improved, and the reliability of static electricity prevention is ensured.
It needs to be supplemented that the contact assembly can be a spring guide pin, and the spring through compressing the spring of the spring guide pin generates elastic force, can also be a shrapnel, namely, the spring is bent in the length direction, and the spring is deformed by the extrusion integral structure to generate elastic force, and can also be other effective elastic structures.
As shown in fig. 2 and 3, in an embodiment of the present invention, the contact assembly includes a conductive rod (not shown), a spring (not shown), and a conductive seat (not shown), wherein one end of the spring is connected to the conductive rod. The conductive seat is installed on the electric meter main body 30 and electrically connected with the grounding wire of the electric meter main body 30, and one surface of the conductive seat departing from the electric meter main body 30 is connected with the other end of the spring. Wherein, the conductive patch extrudes the conductive rod to deform the spring.
In this embodiment, after the first housing 11 is covered on the second housing 13, the conductive sheet abuts against the conductive rod, and the conductive rod is pressed to move to compress the spring, so that the conductive rod is maintained to contact the conductive patch, the contact reliability between the conductive patch and the conductive rod is improved, and the antistatic reliability is ensured. In addition, the structure is simple and reliable, the manufacturing and the production are convenient, and the cost is saved.
Specifically, electrically conductive seat installs on ammeter main part 30, and the one side that electrically conductive seat deviates from ammeter main part 30 is equipped with the recess, and the spring is located the recess, the tank bottom surface of the one end butt recess of spring, and the conducting rod is inserted in the recess to the other end of butt spring, the groove wall up-and-down motion of recess can be followed to the conducting rod, and compression spring.
As shown in fig. 2 and 3, in an embodiment of the present invention, the conductive patch is a copper foil.
It can be understood that, in the present embodiment, the copper foil has excellent conductive performance, which can improve the reliability of the conductive device 50 for protecting against static electricity, and the copper foil can be bent into different shapes, which can be adapted to the structure on the inner wall surface of the casing 10, so as to be attached to the inner wall surface of the casing 10.
As shown in fig. 2 and 3, in an embodiment of the present invention, the meter main body 30 includes a main board 31 and a terminal block 33, the main board 31 is mounted with a contact assembly, and the main board 31 forms a static electricity sensitive region 30a. The wiring bar 33 is electrically connected to the main board 31, and the wiring bar 33 is used for connecting a ground wire.
It should be understood that, in the present embodiment, the wiring bar 33 has a ground terminal, and the main board 31 is electrically connected to the wiring bar 33, so that the main board 31 can be electrically connected to the ground terminal of the wiring bar 33 and electrically connected to a ground wire through the ground terminal, which is a ground wire of a building or the like.
As shown in fig. 2 and 3, in an embodiment of the present invention, the main board 31 is provided with a pad (not shown), and the contact assembly is soldered on the pad.
It can be understood that, in this embodiment, the main board 31 is provided with a pad, which is a basic component unit of surface mount assembly and is used to form a pad pattern of the circuit board, i.e. various pad combinations designed for special component types, so as to facilitate the soldering of the contact component on the pad, and to perform the function of marking, preventing the contact component from being soldered at a wrong position, and improving the mounting efficiency. The contact assembly is welded on the welding pad and is firm and reliable.
As shown in fig. 2 and 3, in an embodiment of the present invention, the main board 31 is provided with a static electricity detecting circuit (not shown) for detecting the number of times and/or the occurrence time of the static electricity.
In this embodiment, the static electricity detection circuit is provided with a counting component, a time recording component, or both the counting component and the time recording component. The conductive member 50 is electrically connected to the motherboard 31, and is electrically connected to an external ground line through a ground line designed on the motherboard 31. The main board 31 is provided with a static electricity detection circuit, and when the conductive member 50 is subjected to static electricity, counting components on the static electricity detection circuit are triggered, so that the number of triggering times of the static electricity is counted; or, when the conductive member 50 is subjected to static electricity, triggering a component on the static electricity detection circuit for recording time, so as to record the time of static electricity triggering; or simultaneously triggering a counting component and a time recording component so as to record the number of times and time of electrostatic triggering. By the design, the number of times and/or the occurrence time of the external strong electrostatic shock can be recorded and stored as evidence of electricity stealing. In addition, the counting components and the time recording components are all in the prior art, and therefore are not described herein again.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An electric energy meter, comprising:
the shell is provided with a cavity;
an electric meter body mounted within the cavity; and
and one end of the conductive piece is in contact with the inner wall surface of the cavity, and the other end of the conductive piece is electrically connected to the grounding wire of the electric meter main body.
2. The electric energy meter according to claim 1, wherein the meter body has a static electricity sensitive region, an attaching region is formed on an inner wall surface of the cavity to be opposed to the static electricity sensitive region, and an attaching surface is formed at an end of the conductive member contacting the inner wall surface of the cavity, the attaching surface being attached to the attaching region.
3. The electrical energy meter of claim 2, wherein the housing comprises:
a first housing having the attachment region formed on an inner wall surface thereof; and
the second shell is internally provided with the electric meter main body so that the static sensitive area faces the pasting area;
the first shell covers the second shell to form the cavity with the second shell in an enclosing mode.
4. The electric energy meter of claim 3, wherein said conductive member comprises:
the conductive patch is attached to the attaching area; and
the contact assembly is fixed on the electric meter main body and is installed on the second shell through the electric meter main body, the contact assembly is arranged opposite to the conductive patch, and the contact assembly is electrically connected to a grounding wire of the electric meter main body;
when the first shell covers the second shell, the contact assembly touches the conductive patch to be electrically conducted with the conductive patch.
5. The electric energy meter according to claim 4, wherein the contact member is elastic and stretchable in a length direction;
the conductive patch presses against the contact assembly to compress the contact assembly to maintain contact against the conductive patch.
6. The electrical energy meter of claim 5, wherein the contact assembly comprises:
a conductive rod;
one end of the spring is connected with the conducting rod; and
the conductive seat is arranged on the electric meter main body and is electrically connected with a grounding wire of the electric meter main body, and one surface of the conductive seat, which is far away from the electric meter main body, is connected with the other end of the spring;
wherein, the conducting rod is extruded to the conducting paster, makes the spring deformation.
7. The electrical energy meter of claim 4, wherein the conductive patch is a copper foil.
8. The electric energy meter according to claim 4, wherein said meter body comprises:
a motherboard on which the contact assembly is mounted, the motherboard forming the static-electricity-sensitive region; and
the wiring bar, wiring bar electric connection the mainboard, the wiring bar is used for connecting the earth connection.
9. An electrical energy meter according to claim 8, wherein the main board is provided with pads on which the contact assemblies are soldered.
10. The electric energy meter according to claim 8, wherein the main board is provided with a static electricity detection circuit for detecting the number of times and/or time of occurrence of static electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221386102.8U CN217739275U (en) | 2022-06-02 | 2022-06-02 | Electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221386102.8U CN217739275U (en) | 2022-06-02 | 2022-06-02 | Electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217739275U true CN217739275U (en) | 2022-11-04 |
Family
ID=83841410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221386102.8U Active CN217739275U (en) | 2022-06-02 | 2022-06-02 | Electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217739275U (en) |
-
2022
- 2022-06-02 CN CN202221386102.8U patent/CN217739275U/en active Active
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