CN215525919U - Shell assembly and electric energy meter - Google Patents

Abstract

The utility model discloses a housing assembly and an electric energy meter. The shell assembly comprises a terminal seat and a bottom shell. The terminal seat includes the plastic body and terminal, and the drain pan includes bottom plate and two curb plates, and two curb plates are connected with the both ends of bottom plate, and two curb plates are injectd the installation space that is used for installing the plastic body with the bottom plate jointly at the front end of bottom plate, and the bottom plate has the portion of filling up high on the surface that is located the installation space. The plastic body is installed in the installation space, and the part area of the bottom of the plastic body is supported by the heightening part so as to form a gap between the rest area of the bottom of the plastic body and the inner surface of the bottom plate, and the gap is communicated with the external environment through the first convection slot. Through first advection groove, this space and external environment intercommunication from this, circulate in this space through the air, can effectively control the temperature rise of terminal seat, avoided the terminal seat to appear the plastic phenomenon of melting.

Description

Shell assembly and electric energy meter

Technical Field

The utility model relates to the field of metering instruments, in particular to a shell assembly and an electric energy meter.

Background

In the related art, in the case assembly of the electric energy meter, the terminal block is tightly assembled on the bottom case, and the binding post is installed in the plastic body of the terminal block. When the electric energy meter is used, when current flows through the binding post, because of the binding post and the reason of measuring the internal resistance of the sampling device, the binding post can produce a large amount of heat, the binding post generates heat and can cause the plastic body of the terminal block to melt, and then serious consequences such as binding post short circuit can be caused, and certain potential safety hazard exists.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a shell assembly which can effectively cool a terminal seat, so that the phenomenon that plastic melts on the terminal seat is avoided.

The utility model also provides an electric energy meter with the shell assembly.

The shell assembly provided by the embodiment of the utility model is used for an electric energy meter and comprises a terminal base, a shell and a terminal, wherein the terminal base comprises a plastic body and a binding post, and the binding post is embedded in the plastic body; the bottom shell comprises a bottom plate and two side plates, the two side plates are connected with two ends of the bottom plate, the two side plates and the bottom plate jointly define an installation space for installing the plastic body at the front end of the bottom plate, and the bottom plate is provided with a raised part on the surface in the installation space; the plastic body is arranged in the mounting space, a partial area of the bottom of the plastic body is supported by the raised part, so that a gap is formed between the rest area of the bottom of the plastic body and the inner surface of the bottom plate, and the gap is communicated with the external environment through the first convection groove.

The shell assembly according to the embodiment of the first aspect of the utility model has at least the following technical effects: because lie in on casing assembly's the bottom plate surface in the installation space has the portion of filling up to can fill up the plastic body bed of terminal seat, make it and form the space between the internal surface of bottom plate, through first convection groove, this space and external environment intercommunication, from this, circulate in this space through the air, can effectively control the temperature rise of terminal seat, avoided the terminal seat to appear the plastic phenomenon of melting.

In addition, the shell assembly according to the embodiment of the utility model also has the following additional technical characteristics:

according to some embodiments of the utility model, the raised portion comprises a first raised portion, the first raised portion comprises a rib formed at a rear end of the installation space, the rib extends to connect to the two side plates, and a bottom of the plastic body is adapted to form a sealing fit with the rib at the rear end of the installation space.

According to some embodiments of the utility model, the number of the ribs is two, two of the ribs are arranged in parallel, and a sealing groove is formed between the two ribs.

According to some of the embodiments of the present invention, the raised portion further includes a second raised portion including a bump formed at a front end of the installation space.

According to some embodiments of the utility model, the number of the bumps is two, and the two bumps are distributed on two sides of the front end of the installation space.

According to some embodiments of the utility model, a plurality of first convection holes are arranged on the front end surface of the plastic body, and the first convection holes are communicated with the gap.

According to some embodiments of the present invention, a heat dissipation hole extending to the terminal is formed in a wall of the plastic body facing to one side of the gap, and an opening of the heat dissipation hole is communicated with the gap.

According to some embodiments of the present invention, each of the two side plates is provided with a second convection groove, the second convection grooves are communicated with the gap of the plastic body, the wall of the bottom plate is provided with two second convection holes communicated to the back surface of the bottom plate, the two second convection holes are respectively communicated with the two second convection grooves, and the back surface of the bottom plate is provided with a raised foot.

According to some embodiments of the utility model, the two side plates are provided with a buckling position at the top of the second convection slot, and the plastic body is connected with the bottom shell in a buckling manner through the buckling position.

An electrical energy meter according to an embodiment of the second aspect of the utility model has the housing assembly of the embodiment of the first aspect described above.

The electric energy meter according to the embodiment of the second aspect of the utility model has at least the following technical effects: due to the structural design of the shell assembly, the temperature rise of the terminal block can be effectively controlled, the phenomenon that plastic melting occurs on the terminal block is avoided, and therefore the safety of the electric energy meter can be effectively improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a housing assembly of one embodiment of the present invention;

fig. 2 is a schematic view of the terminal block of the housing assembly of fig. 1 assembled with the bottom case;

FIG. 3 is an exploded schematic view of FIG. 2;

FIG. 4 is a schematic bottom view of the terminal block of the housing assembly of the embodiment of FIG. 1;

fig. 5 is a schematic view of a bottom structure of a bottom case in the housing assembly of the embodiment of fig. 1.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.

In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "up", "down", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "connected", or "mounted" to another feature, it can be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, or connected to the other feature.

The housing assembly 10 of the embodiment of the present invention is described below with reference to fig. 1 to 5.

Fig. 1 is a schematic structural diagram of a housing assembly 10 according to an embodiment of the present invention, where the housing assembly 10 is used for an electric energy meter, fig. 2 is a schematic structural diagram of the housing assembly 10 in fig. 1, where a terminal base 100 is assembled with a bottom case 200, fig. 3 is an exploded schematic diagram of fig. 2, and referring to fig. 1 to 3, the housing assembly 10 includes the terminal base 100 and the bottom case 200. The terminal base 100 includes a plastic body 110 and a terminal 120, and the terminal 120 is embedded in the plastic body 110. The bottom chassis 200 includes a bottom plate 210 and two side plates 220, the two side plates 220 are connected to two ends of the bottom plate 210, the two side plates 220 and the bottom plate 210 together define a mounting space (not shown) for mounting the plastic body 110 at a front end of the bottom plate 210, and the bottom plate 210 has a raised portion on a surface located in the mounting space. Wherein, the plastic body 110 is installed in the installation space, and a partial region of the bottom of the plastic body 110 is supported by the raised portion, so as to form a gap (not shown) between the remaining region of the bottom of the plastic body 110 and the inner surface of the bottom plate 210, and the gap is communicated with the external environment through the first convection slot 300.

Therefore, since the surface of the bottom plate 210 of the housing assembly 10 in the installation space has the raised portion, the plastic body 110 of the terminal block 100 can be raised to form a gap with the inner surface of the bottom plate 210, and the gap is communicated with the external environment through the first flow groove 300, so that air circulates in the gap, the temperature rise of the terminal block 100 can be effectively controlled, and the plastic melting phenomenon of the terminal block 100 can be avoided.

Referring to fig. 1 and 2, it can be understood that the housing assembly 10 includes, in addition to the terminal base 100 and the bottom case 200, a housing 400 and a terminal cover (not shown). Wherein, the front end of bottom case 200 has an opening, and the installation space is located at the area near the opening, so that, after terminal base 100 and cover case 400 are installed, the rear end portion of terminal base 100 and cover case 400 and bottom case 200 jointly define an internal space 500, and internal space 500 is used for installing other components of the electric energy meter, such as a metering sampling device. It is understood that when the terminal block 100 is mounted on the mounting control of the bottom case 200, the front end portion, including the top surface and the front end surface, can be exposed to facilitate the operation of wiring and the like. The terminal cover may be used to cover the exposed portion of the front end of the terminal block 100.

It can also be understood that, with the above arrangement, the first diagonal groove 300 is a notch formed between the lower edge of the front end surface of the plastic body 110 of the terminal base 100 and the upper surface of the bottom plate 210.

Referring to fig. 3, in some embodiments, in order to realize that the terminal base 100 forms a sealed inner space 500 at the rear end of the bottom case 200 after being assembled to the bottom case 200 for installing other components of the electric energy meter, such as a metering and sampling device, the raised portion includes a first raised portion 211, the first raised portion 211 includes a rib formed at the rear end of the installation space, the rib extends to be connected to the two side plates 220, and the bottom of the plastic body 110 is adapted to form a sealed fit with the rib at the rear end of the installation space. Accordingly, when plastic body 110 of terminal block 100 is mounted in the mounting space, the rear end of plastic body 110 is supported by the rib and lifted up to form a gap with the inner surface of bottom case 200, and a sealing process is performed at this position, for example, by adding a gasket assembly, the space in the meter can be sealed, which is simple in structure and easy to implement.

It can be understood that, because first padding portion 211 sets up in the rear end of installation space, thereby, after plastic body 110 installed installation space, the rear end of its bottom surface was connected with this bead contact cooperation, thereby, can guarantee that most regional and the internal surface of drain pan 200 of the bottom surface of plastic body 110 do not contact, that is, can guarantee the area maximize in space, thereby make the air current can enter into the space through first convection hole 111 after, can fully with the bottom surface contact heat transfer of plastic body 110, improve the radiating effect.

Further, in some embodiments, there are two ribs, the two ribs are disposed in parallel, and a sealing groove 215 is formed between the two ribs. Therefore, the sealing ring can be arranged in the sealing groove 215, so that the sealing ring is convenient to mount and position, and the assembly of products is convenient and very convenient.

It is contemplated that, in the foregoing embodiment, although the first raised portion 211 is disposed at the rear end of the installation space of the bottom case 200, the first raised portion 211 is not limited thereto, and may be disposed at any position in the installation space, such as the middle portion, and the shape of the rib is not limited, and may be adaptively disposed according to the actual shape of the bottom of the plastic body 110.

With continued reference to fig. 3, in order to ensure that the plastic body 110 can be stably mounted in the bottom case 200, in some embodiments, the raised portion further includes a second raised portion 212, and the second raised portion 212 includes a protrusion formed at a front end of the mounting space. Therefore, the front end of the plastic body 110 is also supported, so that the plastic body is stable and does not influence the circulation of air. Particularly, in the case that the first raised portion 211 is disposed at the rear end, the second raised portion 212 is engaged with the first raised portion 211, so that the plastic body 110 can be stably supported in the installation space.

Furthermore, in order to assemble the plastic body 110 more stably, in some embodiments, the number of the bumps is two, and the two bumps are distributed on two sides of the front end of the installation space.

Referring to fig. 1 and 4, in some embodiments, in order to improve the heat dissipation effect, a plurality of first convection holes 111 are formed in the front end surface of the plastic body 110, and the first convection holes 111 communicate with the gap. Specifically, the first convection holes 111 are provided to penetrate through a wall of the front end surface of the plastic body 110, and communicate with the gap by communicating with the lower surface of the plastic body 110 from the inside. For example, as shown in fig. 4, the plastic body 110 has an empty space-avoiding design inside, so that the plastic body 110 enters from the external environment through the first convection hole 111 and is collected in the empty space and the empty space to cool the lower surface and the inside of the plastic body 110.

With reference to fig. 4, in order to enhance the heat dissipation effect on the terminal 120 of the terminal holder 100, in some embodiments, the plastic body 110 is provided with a heat dissipation hole 112 extending to the terminal 120 on a wall facing the side of the gap, and an opening of the heat dissipation hole 112 communicates with the gap. Therefore, the cold air passing through the first convection slot 300 and the first convection hole 111 can directly contact the terminal 120 exposed at the bottom of the heat dissipation hole 112, so as to dissipate heat from the terminal 120, directly take away heat generated by the terminal 120, and effectively control the temperature rise of the plastic body 110.

Referring to fig. 3 and 5, in order to improve the convection effect of the air and further improve the heat dissipation effect, in some embodiments, the two side plates 220 are respectively provided with a second convection groove 221, the second convection groove 221 is communicated with the gap of the plastic body 110, two second convection holes 213 are formed in the wall of the bottom plate 210 and are communicated with the back surface of the bottom plate 210, the two second convection holes 213 are respectively communicated with the two second convection grooves 221, and the back surface of the bottom plate 210 is provided with a raised foot 214. Therefore, after the electric energy meter is installed in a use environment such as an installation plate or a wall, the back surface of the bottom plate 210 does not adhere to the installation environment due to the function of the raised foot 214, so that the second convection hole 213 can communicate with the external environment, and hot air in the gap can rise and be discharged from the second convection hole 213 through the second convection groove 221, thereby efficiently carrying away heat generated from the bottom surface of the terminal block 100.

It can be understood that the second convection groove 221 and the second convection hole 213 are disposed closer to the rear end of the installation space, so that when the electric energy meter is installed in a practical application environment, the convection of air can be achieved higher than the first convection groove 300 and the first convection hole 111. The positions of the second convection slot 221 and the second convection hole 213 are lower than the sealing position between the plastic body 110 and the bottom case 200, so as not to damage the inner sealing space formed by the housing assembly 10.

Referring to fig. 3 and 5, in some embodiments, for convenience of manufacturing and cost reduction, the two side plates 220 are provided with a fastening position 222 on the top of the second convection slot 221, and the plastic body 110 is fastened to the bottom case 200 through the fastening position 222.

The electric energy meter of the embodiment of the present invention is described below.

The electric energy meter of one embodiment of the present invention has the case assembly 10 of the above-described embodiment. Due to the structural design of the housing assembly 10, the temperature rise of the terminal block 100 can be effectively controlled, the phenomenon that the plastic melts in the terminal block 100 can be avoided, and therefore the safety of the electric energy meter can be effectively improved.

In the description herein, references to the description of "some embodiments" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A housing assembly for an electric energy meter, comprising:

the terminal seat comprises a plastic body and a binding post, and the binding post is embedded in the plastic body;

the bottom shell comprises a bottom plate and two side plates, the two side plates are connected with two ends of the bottom plate, the two side plates and the bottom plate jointly define an installation space for installing the plastic body at the front end of the bottom plate, and the bottom plate is provided with a raised part on the surface in the installation space;

the plastic body is arranged in the mounting space, a partial area of the bottom of the plastic body is supported by the raised part, so that a gap is formed between the rest area of the bottom of the plastic body and the inner surface of the bottom plate, and the gap is communicated with the external environment through the first convection groove.

2. The housing assembly of claim 1 wherein the raised portion comprises a first raised portion comprising a rib formed at a rear end of the mounting space, the rib extending to the two side plates, the bottom of the plastic body adapted to form a sealing engagement with the rib at the rear end of the mounting space.

3. The housing assembly of claim 2 wherein there are two of said ribs, two of said ribs being disposed in parallel, a seal groove being formed between said two ribs.

4. The housing assembly of claim 2 or 3, wherein the raised portion further comprises a second raised portion comprising a protrusion formed at a front end of the mounting space.

5. The housing assembly of claim 4, wherein the number of the protrusions is two, and the two protrusions are distributed on both sides of the front end of the installation space.

6. The housing assembly of claim 1 wherein the plastic body has a plurality of first convection holes formed in a front face thereof, the first convection holes communicating with the gap.

7. The housing assembly of claim 6, wherein the plastic body has a heat dissipation hole formed on a wall thereof facing the side of the gap and extending to the terminal, and the heat dissipation hole has an opening communicating with the gap.

8. The housing assembly of claim 1, 6 or 7 wherein each of the two side plates is provided with a second convection slot, the second convection slot is in communication with the gap of the plastic body, two second convection holes are formed in the wall of the bottom plate and are in communication with the two second convection slots, respectively, and the back of the bottom plate is provided with a raised foot.

9. The housing assembly of claim 8, wherein the two side plates are provided with a fastening position at the top of the second convection slot, and the plastic body is fastened to the bottom shell through the fastening position.

10. Electric energy meter, its characterized in that: comprising a housing assembly according to any one of claims 1 to 9.

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