WO2023004846A1

WO2023004846A1 - Housing structure of electric energy meter, electric energy meter and housing manufacturing method of electric energy meter

Info

Publication number: WO2023004846A1
Application number: PCT/CN2021/110427
Authority: WO
Inventors: 唐健; 魏章波; 林国庆; 乐红强; 王军
Original assignee: 宁波三星医疗电气股份有限公司
Priority date: 2021-07-29
Filing date: 2021-08-04
Publication date: 2023-02-02
Also published as: CN113466517A

Abstract

A housing structure of an electric energy meter, comprising a rear housing (2) and a front housing (1). One of the front housing (1) and the rear housing (2) is provided with an insertion portion (11), and the other one is provided with a slot (21) in insertion fit with the insertion portion (11). A slot wall of the slot (21) comprises a bottom wall (211) and an outer extension wall (212), and the outer extension wall (212) is at least locally recessed toward the bottom wall (211) to form a recess portion (212a); the insertion portion (11) has a first end portion (11a), and the first end portion (11a) of the insertion portion (11) is accommodated in the slot (21) when the rear housing (2) is connected to the front housing (1); the insertion portion (11) is fixedly connected to the slot wall of the slot (21), and the outer side wall of the insertion portion (11) is at least locally exposed to the recess portion (212a) in a front-rear direction. An electric energy meter, for facilitating seeing a meter prying trace from the appearance of the housing to know whether a meter prying event occurs. A housing manufacturing method of the electric energy meter, by means of laser welding.

Description

Shell structure of electric energy meter, electric energy meter, and shell manufacturing method of electric energy meter

technical field

The invention relates to the technical field of electric energy meters, in particular to a shell structure of the electric energy meter, an electric energy meter, and a manufacturing method for the shell of the electric energy meter.

Background technique

An electric energy meter is an instrument used to measure electric energy, also known as an electric meter, a fire meter, and a kilowatt-hour meter. , It is more and more common to use in industrial production and life.

For example, the Chinese utility model with application number CN202020714589.2 (announcement number CN213023271U) discloses "An Electric Energy Meter", which includes a base with an opening on its front side; It is connected with the base and is used to open or close the opening; a convex part and an accommodating opening are provided between the lower wall plate of the cover and the joint surface of the base, and the convex part is located between the base and the cover. There is a gap at the upper position, and there is a gap between the base and the cover at the position above the gap, and a retaining rib for blocking the gap is arranged in the gap. This patent reduces the possibility of proceeding to pry the watch.

However, if the electric energy meter of the above-mentioned patent has a prying event, the structure of the housing is relatively complete, so it is not easy to see the traces of the prying table from the appearance of the casing, and it is not easy to see whether the prying event has occurred from the appearance of the casing .

Therefore, the shell structure of the electric energy meter, the electric energy meter, and the shell manufacturing method of the electric energy meter can also be continuously improved.

Contents of the invention

The first technical problem to be solved by the present invention is to provide a shell structure of an electric energy meter that is convenient to see the traces of the prying meter from the appearance of the shell, so that it is easy to see whether the There has been a hacking incident.

The second technical problem to be solved by the present invention is to provide an electric energy meter with the casing structure of the above electric energy meter in view of the current situation of the prior art, which is convenient to see the electric energy meter with the traces of the prying meter from the appearance of the casing, thereby It is easy to see from the appearance of the case whether a watch pry event has occurred.

The third technical problem to be solved by the present invention is to provide a method for manufacturing a casing of an electric energy meter in view of the current state of the art.

The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a shell structure of an electric energy meter, including

the rear case has an opening at its front side;

The front case, the cover is arranged at the opening and is fixedly connected with the rear case for closing the opening, one of the front case and the rear case has a plug-in part, and the front case The other one of the body and the rear case has a slot that is mated with the socket;

It is characterized by:

The groove wall of the slot includes a bottom wall, an outer extension wall extending back and forth from the outer side of the bottom wall toward the socket part, the outer extension wall is at least partially recessed toward the bottom wall to form a depression, and the outer wall of the socket part is at least partially exposed to the recessed portion in the front-rear direction;

The plug-in part has a first end inserted into the slot, the first end of the plug-in part is accommodated in the slot, and the plug-in part is fixedly connected with the groove wall of the slot.

In order to facilitate the positioning and improve the tolerance of the connection process, the groove wall of the slot further includes an inner extension wall extending forward and backward from the inner side of the bottom wall toward the insertion part. By setting the inner extension wall, it is convenient for the positioning and installation of the socket part. In addition, the front shell and the rear shell can be applied to a variety of connection processes to realize the fixed connection of the front shell and the rear shell, which is more inclusive to the process. , for example, the socket part and the groove bottom of the slot can be ultrasonically welded, or glue can be dispensed in the slot, and the socket part and the slot can be sealed by gluing, or the laser can go through the concave part to extend the inside of the slot The wall and the socket are welded.

In order to facilitate external tools to apply force when assembling the front shell and the rear shell, the insertion part also has a second end far away from the slot, and the housing corresponding to the insertion part also has a second end from the insertion part. The end portion extends toward the inner side of the housing, and the extension portion is close to the inner extension wall in the front-rear direction. By providing the extension part, when assembling the front case and the rear case, an external tool can act on the extension part so as to facilitate the connection of the front case and the rear case.

In order to make the housing easy to be damaged when a tampering event occurs, the inner side wall of the housing where the insertion part is located is recessed toward the second end of the insertion part to form a thinned part. By setting the thinned part, when the tool picks the watch, the case is easily damaged at the thinned part.

The recessed part can be arranged at different positions. In order to further facilitate the observation of the damaged position of the case after the pry watch, the recessed part is located in the middle of the outer extension wall. The concave part is arranged in the middle, so that it is convenient to observe the damaged position of the shell after prying the watch.

In order to fixedly connect the rear case and the front case, the end surface of the first end of the insertion part is fixedly connected to the bottom wall through a first connection structure.

There may be multiple first connection structures. Preferably, an ultrasonic sealing line extending toward the bottom wall is provided at the end surface of the first end of the insertion part, and the fixed connection of the two is realized by ultrasonic welding;

Alternatively, the end surface of the first end of the insertion part is fixedly connected to the bottom wall through a sealant.

In order to connect the rear case and the front case, the inner side wall of the first end of the insertion part is fixedly connected with the corresponding inner extension wall of the slot through the second connection structure.

There may be multiple second connection structures. Preferably, the second fixed connection structure is ultrasonic welding or adhesive bonding.

In order to connect the rear case and the front case, the outer side wall of the first end of the plug-in portion is fixedly connected with the corresponding outer extension wall of the slot through a third connection structure.

There may be multiple third connection structures. Preferably, the third connection structure is ultrasonic welding or adhesive bonding.

In order to make it difficult for the watch tool to touch the slot, the housing corresponding to the slot is provided with a boss on the upper side or/and the lower side of the slot for covering the bottom wall in the up and down direction, and the boss extends forward and backward. , the boss is closer to the extension than the bottom wall. In this way, when prying the watch, the prying tool will first contact the boss and not easily contact the slot, so that the watch is not easy to pry off.

The housing corresponding to the insertion part may have various structures. Preferably, the housing corresponding to the insertion part has a notch adapted to the position and shape of the boss, and the notch extends forward and backward.

In order to shield the outer wall of the insertion part, the outer extension wall also has a shielding part extending up and down connected with the corresponding boss, and the shielding part is used to shield the outer wall of the insertion part in the left and right direction, and the shielding part and the extension part flush in the left-right direction. By setting the shielding part to cover the outer wall of the insertion part, the position between the insertion part and the boss is hidden, and the prying tool is not easy to act on the position between the insertion part and the boss. In addition, the shielding part also affects the insertion The outer wall of the part has the function of reinforcement, so that the insertion part or the position near the insertion part is easy to be broken and easily observed through the concave part.

In order to facilitate installation and positioning, the housing corresponding to the insertion part also has a flange extending back and forth from the inner side of the extension part toward the housing corresponding to the slot;

When the rear shell is connected to the front shell, the flange is located on the inner side of the inner extension wall corresponding to the slot and is close to the inner extension wall in the left-right direction.

By providing the flange, it is convenient to locate when installing the housing corresponding to the plug-in portion, so that the installation is quicker.

In order to have more positions that are easy to be damaged when a prying event occurs, the plug-in part is located on the side wall of the corresponding housing, and the upper edge of the housing corresponding to the plug-in part has a first connection surface, and the plug-in part The lower edge of the corresponding housing has a second connecting surface;

After the front shell and the rear shell are fixedly connected, the first connecting surface and the second connecting surface are both opposite to the shell corresponding to the slot in the front-rear direction;

One of the first connection surface and the second connection surface is located more forward than the front surface of the extension part in the front-rear direction,

The other one of the first connection surface and the second connection surface is located more rearward than the front surface of the extension part in the front-rear direction.

In this way, the positions of the first connection surface and the second connection surface are staggered, when the prying tool pries from different connection surfaces, the positions that are easy to be damaged are different, so that there are many positions that are easy to be damaged in the whole electric energy meter, and it is easy to Found from the outside.

The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: an electric energy meter, which is characterized in that it adopts the shell structure of the above electric energy meter.

The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: a method for manufacturing a casing of an electric energy meter, which adopts the above-mentioned casing structure of the electric energy meter, and is characterized in that: the insertion part and the slot The inner extension walls are connected by laser welding, specifically: the optical path of the laser passes through the concave part and irradiates onto the insertion part, so that the inner side wall of the insertion part is adhered to the inner extension wall of the slot.

In order to facilitate the absorption of energy by the laser light passing through the plug-in part and the inner extension wall of the slot, the plug-in part is made of transparent material, and the inner extension wall of the slot is made of non-transparent material. The plug-in part adopts transparent material to facilitate the passage of laser light, and the inner extension wall adopts non-transparent material to facilitate absorption of energy and partial melting, thereby bonding the two together.

Compared with the prior art, the present invention has the advantages that: by setting the slot and the plug-in part, the plug-in part is fixedly connected to the groove wall of the slot, so that the position of the fixed connection is hidden and is not easy to be directly observed, thereby It is not easy to find the position suitable for prying the watch, and the position of the fixed connection is not easy to be directly touched by the prying tool; after the prying tool acts on the shell, it is easy to break at the socket or near the socket and pass through easily The concave part is observed, so that it is easy to see the traces of the watch from the appearance of the casing, so that it is easy to see whether the watch event has occurred from the appearance of the casing, and has the functions of anti-prying watch and anti-electricity theft.

In the improved solution, the slot also includes an inner extension wall, so that the front shell and the rear shell can be applied to various connection processes to realize the fixed connection of the front shell and the rear shell, and the tolerance to the process is better. For example, the groove bottom of the plug-in part and the slot can be ultrasonically welded, or glue can be dispensed in the slot, and the plug-in part and the slot can be glued and sealed, or the laser can go through the concave part to extend the inside of the slot. Welding of wall and socket;

By setting the boss, it is convenient to protect the position where the slot is fixedly connected with the socket. When a prying event occurs, the tool for prying the watch first touches the boss, and it is not easy to extend into the slot through the blocking of the boss, so that It is not easy to access the fixed connection position, so that the rear shell and the front shell are not easy to separate, thereby reducing the possibility of the electric energy meter being pried open.

The electric energy meter with the shell structure of the electric energy meter mentioned above also has the advantage of being able to see the traces of the watch from the appearance of the shell, and it is easy to see from the appearance of the shell whether there has been a skidding event.

The manufacturing method of the housing of the electric energy meter is to pass the optical path of the laser through the concave part and irradiate the plug-in part, so that the inner wall of the plug-in part is adhered to the inner extension wall of the slot, because the concave part is used for the laser to pass through, so The larger adhesion area is conducive to the stable connection of the front shell and the rear shell.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the electric energy meter that is applied with the shell structure of the electric energy meter of the embodiment of the present invention;

Fig. 2 is a schematic diagram of another angle of Fig. 1;

Fig. 3 is the sectional view of Fig. 2;

Figure 4 is an exploded view of Figure 3;

Figure 5 is an exploded view of Figure 2;

6 is a three-dimensional schematic view of the rear housing in an embodiment of the present invention (remove the circuit board in the rear housing, etc.);

Fig. 7 is a schematic diagram of another angle of Fig. 6;

Fig. 8 is a schematic diagram of another angle in Fig. 6;

Fig. 9 is a schematic perspective view of the front case in an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Fig. 1 to Fig. 9, it is a preferred embodiment of the electric energy meter applied with the housing structure of the electric energy meter of the present invention.

The electric energy meter includes a shell structure of the electric energy meter, a circuit board (not shown in the figure) and the like.

The housing structure of the electric energy meter includes a rear housing 2 and a front housing 1 .

The rear case 2 has an opening 2a on its front side. The rear housing 2 has a slot 21, a boss 22, etc., and the slot 21 is plugged and fitted with the socket part 11 described below.

Referring to Fig. 3 and Fig. 4, the groove wall of the slot 21 includes a bottom wall 211, an inner extension wall 213 extending forward and backward from the inner side of the bottom wall 211 toward the socket part 11, and extending forward and backward from the outer side of the bottom wall 211 toward the socket part 11. The outer extension wall 212 is partially recessed toward the bottom wall 211 to form a recess 212a. Preferably, the recess 212a is located in the middle of the outer extension wall 212 for easy observation of the rupture position. The boss 22 is arranged on the rear case 2, is located on the upper side and the lower side of the slot 21 and is used to cover the bottom wall 211 in the up and down direction, the boss 22 extends forward and backward, and the boss 22 is closer to the bottom wall 211 The extension part 12 of the front housing 1 described below, that is, the front side of the boss 22 is further forward than the bottom wall 211 . The outer extension wall 212 has a vertically extending shielding portion 212b connected to the corresponding boss 22. The two shielding portions 212b are respectively used to shield the upper outer wall and the lower outer wall of the insertion portion 11 in the left and right directions. The two shielding portions 212b are both It is flush with the extension 12 in the left-right direction (FIG. 1).

The front housing 1 is covered at the opening 2a and is fixedly connected with the rear housing 2, and the front housing 1 is used to close the opening 2a. The front housing 1 has an insertion portion 11, the insertion portion 11 has a first end portion 11a inserted into the slot 21 and a second end portion 11b away from the slot 21, the end surface of the first end portion 11a of the insertion portion 11 is in contact with the The bottom wall 211 is fixedly connected through the first connection structure. In this embodiment, an ultrasonic sealing line 15 extending toward the bottom wall 211 is provided on the end surface of the first end 11 a of the plug-in portion 11 , and the two are fixedly connected by ultrasonic welding. In other embodiments, ultrasonic welding may also be replaced by light welding. The front housing 1 also has an extension portion 12 extending laterally from the second end portion 11b of the insertion portion 11 toward the inside of the front housing 1, and a flange 13 extending forward and backward from the inner side of the extension portion 12 toward the rear housing 2. 1. A notch 14 (see FIG. 5 ) adapted to the position and shape of the boss 22 of the rear housing 2 , the notch 14 extends forward and backward to accommodate the boss 22 . The inner side wall of the housing (in this embodiment, the front housing 1) where the insertion part 11 is located is recessed toward the second end 11b of the insertion part 11 to form a thinned part 11c (FIG. 4), so that when the tool picks the watch , it is easy to damage the front case 1 near the thinned portion 11c. When using ultrasonic welding, the ultrasonic welding tool can be supported by the extension part 12, and the length of the insertion part 11 in the front-back direction is preferably less than 20 mm, which is convenient for the ultrasonic welding tool to melt the ultrasonic sealing line 15.

Referring to Fig. 3, when the rear case 2 is connected to the front case 1, the first end 11a of the plug-in part 11 is accommodated in the slot 21, and the plug-in part 11 is fixedly connected to the groove wall of the slot 21, extending The part 12 is close to the inner extension wall 213 in the front-rear direction, the outer side wall of the insertion part 11 is partially exposed to the recessed part 212a in the front-rear direction, and the flange 13 is located on the inner side of the inner extension wall 213 of the rear case 2 and is in the left-right direction. close to the inner extension wall 213 .

In order to make more easily damaged positions easy to be observed from the appearance, the plug-in part 11 is located on the side wall of the front case 1 (in this embodiment, the left side wall and the right side wall of the front case 1 are provided with plug-in parts). joint 11), the upper edge of the front case 1 has a first connection surface 1a (Figure 9), and the lower edge of the front case 1 has a second connection surface 1b (Figure 9); the front case 1 and the rear case 2 After being fixedly connected, both the first connecting surface 1a and the second connecting surface 1b are opposite to the rear housing 2 in the front-rear direction; The connection surface 1b is located further back than the front surface of the extension portion 12 in the front-rear direction. In this way, if the watch tool is pried from the position of the first connection surface 1a, and arrow A indicates the position of the tool to pick the watch among Fig. 2, then the surface 1c (Fig. 2) of the front side of the extension 12 of the front housing 1 is easily damaged, especially The position close to the thinned part 11c is easy to be damaged; if the watch prying tool is prying from the position of the second connection surface 1b, the arrow B in Fig. The position where the part 11 is connected with the extension part 12 is easy to be damaged. In other embodiments, the position of the first connection surface 1a in the front-rear direction is further behind the front surface of the extension part 12, and the position of the second connection surface 1b in the front-rear direction is more forward than the front surface of the extension part 12. .

In other embodiments, the insertion part 11 may also be located on the rear case 2 , and the slot 21 may be located on the front case 1 .

The working principle and usage method of the electric energy meter are as follows.

During installation, insert the socket part 11 into the slot 21 and realize the fixed connection between the rear housing 2 and the front housing 1 by ultrasonic welding at the position of the ultrasonic sealing line 15, and the ultrasonic welding tool can be leaned against the extension part 12, The two are further fixed by lead sealing screws (not shown in the figure).

Because the ultrasonic sealing line 15 is hidden in the slot 21, it is not easy for the person who picks the watch to see the position of the ultrasonic sealing line 15, so it is not easy to find a position suitable for prying off the electric energy meter.

When the person who pries the watch uses tools such as a flat-head screwdriver to act on the front housing 1 (the arrows A and B in Figure 2 indicate the position of the tool for prying the watch), due to the blocking of the boss 22, the tool will first touch the boss. The platform 22 is not easy to touch the position of the bottom wall 211 of the slot 21, thereby protecting the position where the socket part 11 is fixedly connected to the bottom wall 211;

Specifically, if the watch prying tool is pried from the position of the first connection surface 1a, and arrow A in FIG. Especially the position close to the thinned part 11c is easy to be damaged;

If the watch prying tool is pried from the position of the second connecting surface 1b, and the arrow B in Fig. 2 indicates the position of the tool prying the watch, the front case 1 is easily damaged at the insertion part 11 or the position where the insertion part 11 is connected to the extension part 12 . In this way, there are many positions that are easy to be damaged, and it is easy to be observed from the appearance.

After the watch is stolen, it is easy to leave traces of the watch, and the damaged position can be observed through the recessed part 212a so as to know that the watch event has taken place, so it has the functions of anti-tampering and anti-theft.

Terms expressing directions are used in the description and claims of the present invention, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "Bottom" and the like are used to describe various exemplary structural parts and elements of the present invention, but these terms are used herein for explanatory purposes only, based on the exemplary orientations shown in the drawings. Since the disclosed embodiments of the present invention can be arranged in different directions, these terms indicating directions are for illustration only and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to the opposite direction or consistent direction.

Example 2:

The shell structure of the electric energy meter in Embodiment 1 is basically the same, the difference is that: the end surface of the first end 11a of the plug-in part 11 is fixedly connected with the bottom wall 211 by a sealant; in addition, in order to further strengthen the rear shell 2 and For the fixed connection between the front housings 1, the inner side wall of the first end 11a of the plug-in part 11 and the inner extension wall 213 corresponding to the slot 21 can also be fixedly connected by a second connection structure, the second connection structure is a sealant Bonding, the outer side wall of the first end 11a of the insertion part 11 and the corresponding outer extension wall 212 of the slot 21 can also be fixedly connected through a third connection structure, and the third connection structure is adhesive bonding.

When installing like this, first drop the sealant in the slot 21 of the rear housing 2, then insert the plug-in portion 11 of the front housing 1 into the slot 21, because the sealant has a certain volume, the plug-in portion 11 is inserted into the plug-in slot 21. After the groove 21, the glue spreads towards the socket part 11, so that the bottom wall 211, the outer extension wall 212, and the inner extension wall 213 corresponding to the socket 21 are all bonded to the socket part 11, so that the groove wall of the slot 21 and the socket part 11 The bonding area is larger and the fixing effect is better.

Example 3:

The shell structure of the electric energy meter of Embodiment 1 is basically the same, the difference is that: in order to further strengthen the fixed connection between the rear shell 2 and the front shell 1, the inner wall of the first end 11a of the plug-in part 11 is connected with the The inner extension wall 213 corresponding to the slot 21 can also be fixedly connected by a second connection structure. The second connection structure is ultrasonic welding. It can also be fixedly connected through a third connection structure, and the third connection structure is ultrasonic welding. In this way, there are more fixed connection positions between the rear casing 2 and the front casing 1, and the fixed connection is relatively stable.

Example 4:

The shell structure of the electric energy meter in the first embodiment is basically the same, the difference is that the insertion part 11 and the inner extension wall 213 of the slot 21 are connected by laser welding.

The manufacturing method of the electric energy meter casing adopts the electric energy meter casing structure of the embodiment 4, and the insertion part 11 and the inner extension wall 213 of the slot 21 are connected by laser welding, specifically: the optical path of the laser passes through the concave part 212a is irradiated onto the insertion part 11 , so that the inner wall of the insertion part 11 is adhered to the inner extension wall 213 of the slot 21 , so that the front case 1 and the rear case 2 are fixedly connected. Preferably, the insertion portion 11 is made of transparent material, and the inner extension wall 213 of the slot 21 is made of non-transparent material. Because the recessed portion 212a is used for the passage of the laser light, the area where the inner side wall of the plug-in portion 11 and the inner extension wall 213 of the slot 21 are adhered is relatively large, which is conducive to a stable connection between the front case 1 and the rear case 2 .

Claims

A casing structure of an electric energy meter, comprising

a rear housing (2) having an opening (2a) on its front side;

The front casing (1), the cover is arranged at the opening (2a) and is fixedly connected with the rear casing (2), for closing the opening (2a), the front casing (1) and One of the rear shells (2) has a socket (11), and the other of the front shell (1) and the rear shell (2) has a slot ( twenty one);

It is characterized by:

The groove wall of the slot (21) includes a bottom wall (211), an outer extension wall (212) extending back and forth from the outer side of the bottom wall (211) toward the socket (11), and the outer extension wall (212) is at least Partially recessed toward the bottom wall (211) to form a recessed portion (212a), the outer side wall of the insertion portion (11) is at least partially exposed to the recessed portion (212a) in the front-rear direction;

The plug-in part (11) has a first end (11a) inserted into the slot (21), the first end (11a) of the plug-in part (11) is accommodated in the slot (21), the plug The connecting part (11) is fixedly connected with the groove wall of the slot (21).
The housing structure of the electric energy meter according to claim 1, characterized in that: the groove wall of the slot (21) also includes an inner extension extending forward and backward from the inner side of the bottom wall (211) toward the insertion part (11). wall (213).
The shell structure of the electric energy meter according to claim 2, characterized in that: the plug-in part (11) also has a second end (11b) away from the slot (21), and the plug-in part (11) corresponds to The housing also has an extension part (12) extending from the second end part (11b) of the insertion part (11) toward the inner side of the housing, and the extension part (12) is close to the inner extension wall (213) in the front-rear direction ).
The housing structure of the electric energy meter according to claim 3, characterized in that: the inner side wall of the housing where the plug-in part (11) is located is recessed toward the second end (11b) of the plug-in part (11). A thinned portion (11c) is formed.
The shell structure of an electric energy meter according to claim 1, characterized in that: the recessed part (212a) is located in the middle of the outer extension wall (212).
The shell structure of an electric energy meter according to claim 1, characterized in that: the end surface of the first end (11a) of the plug-in portion (11) is fixedly connected to the bottom wall (211) through a first connection structure.
The housing structure of an electric energy meter according to claim 6, characterized in that: an ultrasonic sealing line extending toward the bottom wall (211) is provided at the end face of the first end (11a) of the plug-in portion (11) (15), realize the fixed connection of both by ultrasonic welding;

Alternatively, the end surface of the first end portion (11a) of the insertion portion (11) is fixedly connected to the bottom wall (211) through a sealant.
The housing structure of an electric energy meter according to claim 2, characterized in that: the inner side wall (213) of the first end (11a) of the insertion part (11) corresponds to the inner extension wall (213) of the slot (21) ) are fixedly connected through the second connection structure.
The housing structure of an electric energy meter according to claim 8, wherein the second fixed connection structure is ultrasonic welding or adhesive bonding.
The shell structure of the electric energy meter according to claim 1, characterized in that: the outer wall (212) of the first end (11a) of the plug-in part (11) corresponds to the outer extension wall (21) of the slot (21) ) are fixedly connected through the third connection structure.
The housing structure of an electric energy meter according to claim 10, characterized in that: the third connection structure is ultrasonic welding or adhesive bonding.
The shell structure of an electric energy meter according to any one of claims 3-11, characterized in that: the shell corresponding to the slot (21) is arranged on the upper side or/and the lower side of the slot (21) There is a boss (22) for covering the bottom wall (211) up and down, the boss (22) extends forward and backward, and the boss (22) is closer to the extension part (12) than the bottom wall (211).
The casing structure of the electric energy meter according to claim 12, characterized in that: the casing corresponding to the insertion part (11) has a notch (14) adapted to the position and shape of the boss (22), the The notch (14) extends forward and backward.
The shell structure of the electric energy meter according to claim 12, characterized in that: the outer extension wall (212) also has a shielding portion (212b) extending up and down connected to the corresponding boss (22), the shielding portion (212b) is used for shielding the outer wall of the insertion part (11) in the left-right direction, and the shielding part (212b) is flush with the extension part (12) in the left-right direction.
The housing structure of an electric energy meter according to any one of claims 3 to 11, characterized in that: the housing corresponding to the insertion part (11) also has a The flange (13) extending forward and backward of the housing corresponding to the slot (21);

When the rear case (2) is connected to the front case (1), the flange (13) is located on the inner side of the corresponding inner extension wall (213) of the slot (21) and is close to the inner extension wall ( 213).
The casing structure of an electric energy meter according to any one of claims 3-11, characterized in that: the plug-in part (11) is located on the side wall of the corresponding casing, and the plug-in part (11) corresponds to The upper edge of the housing has a first connection surface (1a), and the lower edge of the housing corresponding to the insertion part (11) has a second connection surface (1b);

After the front shell (1) and the rear shell (2) are fixedly connected, the first connection surface (1a) and the second connection surface (1b) are both opposite to the shell corresponding to the slot (21) in the front-rear direction ;

One of the first connection surface (1a) and the second connection surface (1b) is located in the front-rear direction than the front surface of the extension part (12),

The other one of the first connection surface (1a) and the second connection surface (1b) is located more rearward than the front surface of the extension part (12) in the front-rear direction.
An electric energy meter, characterized in that the housing structure of the electric energy meter according to any one of claims 1-16 is adopted.
A method for manufacturing a casing of an electric energy meter, which adopts the casing structure of an electric energy meter according to any one of claims 2 to 17, characterized in that: the insertion part (11) and the slot (21) The inner extension walls (213) are connected by laser welding, specifically: the optical path of the laser passes through the concave part (212a) and irradiates on the insertion part (11), so that the inner side wall of the insertion part (11) and the slot The inner extension wall (213) is adhered.
The method for manufacturing a housing of an electric energy meter according to claim 18, characterized in that: the insertion part (11) is made of transparent material, and the inner extension wall (213) of the slot (21) is made of non-transparent material.