CN218938353U

CN218938353U - Shell structure and electric energy meter

Info

Publication number: CN218938353U
Application number: CN202222654306.1U
Authority: CN
Inventors: 章跃平; 陈杰; 朱碧华; 章宏海; 方炯; 唐健
Original assignee: Ningbo Sanxing Smart Electric Co Ltd
Current assignee: Ningbo Sanxing Smart Electric Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-04-28
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a shell structure, which comprises a base (1) and a housing (2), wherein the base (1) is provided with an accommodating cavity which is opened upwards, and a clamping part (11) is arranged in the accommodating cavity; the cover shell (2) is used for downward involution with the base (1), and the cover shell (2) is provided with a clamping foot (21) which is clamped with or separated from the clamping part (11) in the up-down direction; the base (1) is also internally provided with action arms (12) which are distributed at intervals with the clamping parts (11), and the action arms (12) are at least partially made of elastic materials; when the base (1) and the cover (2) are in a connected state, the action arm (12) is abutted against the clamping leg (21) and tends to enable the clamping leg (21) to be abutted against the clamping portion (11). The connection between the clamping foot and the clamping part is more stable and is not easy to be disconnected, which is favorable for the stable connection between the base and the housing.

Description

Shell structure and electric energy meter

Technical Field

The utility model relates to the technical field of shells, in particular to a shell structure and an electric energy meter.

Background

In order to accommodate objects, a housing is often provided. For example, the electric energy meter accommodates electrical components such as a circuit board, a sensor, and the like through a case structure.

The shell structure comprises a base and a cover shell, and the cover shell is downward matched with the base. For convenience of limiting, a clamping structure is often provided. For example, the base has a locking portion, and the cover has a locking leg locked to or separated from the locking portion in the up-down direction.

However, the above structure is still not stable enough, and the clip leg and the clip portion are still separated from each other with a certain probability.

Thus, improvements may continue.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a shell structure with more stable connection and reasonable structure of the clamping pin and the clamping part aiming at the current state of the art.

The second technical problem to be solved by the utility model is to provide an electric energy meter.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a shell structure comprises a base, a shell and a shell, wherein the base is provided with an accommodating cavity which is opened upwards, and a clamping part is arranged in the accommodating cavity;

the cover shell is used for downwards closing with the base and is provided with a clamping foot which is clamped or separated from the clamping part in the up-down direction;

the method is characterized in that:

the base is internally provided with action arms which are distributed at intervals with the clamping parts, and the action arms are at least partially made of elastic materials;

when the base and the cover are in a connected state, the acting arm is propped against the clamping pin, so that the clamping pin is propped against the clamping part.

The action arm may have various structures, preferably, in order to reduce interference to the clamping foot during the installation while being convenient for lean against the clamping foot, the action arm includes a first section inclined downward and toward the clamping foot, and the first section is made of an elastic material. Therefore, the first section is inclined, so that the contact area between the first section and the clamping pin is increased, the clamping pin is propped against, the clamping pin is firmly connected with the clamping part, and meanwhile, the clamping pin is downwards guided in the process of installing the clamping pin downwards and the clamping part due to the downwards inclination of the first section, so that the clamping pin is not easy to interfere.

In order to increase the strength of the action arm, the action arm further comprises a second section connected to the upper part of the first section and extending in a direction away from the clamping part. Thus, the strength of the whole acting arm is high, and the second section is not easy to interfere with the clamping foot.

In order to enable the clamping foot to firmly act with the acting arm, the lower part of the clamping foot is provided with a positioning groove for inserting the head part of the acting arm;

the extending direction of the positioning groove is consistent with the inserting direction of the head part of the acting arm.

Therefore, the clamping pin and the acting arm are firmly connected, and are not easy to be separated.

In order to increase the strength of the clamping leg, the clamping leg is provided with a reinforcing rib which is formed by extending inwards from the side wall which is positioned close to the inner side of the housing in the left-right direction. Therefore, the strength of the clamping foot is high by arranging the reinforcing ribs, and the clamping foot is not easy to bend and deform.

The matching structures of the clamping part and the clamping foot can be various, and preferably, in order to facilitate installation and positioning, the lower part of the clamping part is an arc part;

the clamping foot is provided with an arc-shaped concave part which is provided with the arc-shaped part to extend into and be in rotary fit with.

Therefore, when the base and the cover shell are assembled, the arc-shaped concave part is aligned with the arc-shaped part so as to be convenient to position, and then the cover shell is rotated downwards.

In order to firmly connect the base and the housing, the upper part of the clamping part extends upwards to form a blocking part;

the base and the cover shell are in a connected state, and the blocking part is used for blocking the side wall of the clamping foot in the left-right direction.

Therefore, the blocking part has a limiting effect on the clamping pin in the left-right direction, and the clamping pin and the clamping part are not easy to separate because of the limiting of the blocking part, so that the base and the housing are favorably and firmly connected, for example, when an illegal prying of the housing structure occurs, the housing structure is not easy to pry open.

In order to further firmly connect the base and the housing, and simultaneously in order to facilitate positioning during installation, the clamping part is also provided with an extension section which is respectively connected with the lower end of the blocking part and the inner wall of the housing, and the extension section extends along the left-right direction, so that a containing cavity is formed between the clamping part and the inner wall of the housing;

the base and the cover shell are in a connected state, and part of the clamping foot is positioned in the accommodating cavity;

the part of the clamping pin, which is positioned in the accommodating cavity, is positioned above the arc-shaped concave part.

Therefore, the connection positions of the clamping part and the housing are more and firmer, so that the firm connection between the base and the housing is facilitated;

meanwhile, the part of the clamping pin is positioned in the accommodating cavity, and can play a role in positioning during installation.

In order to limit the clamping pin while increasing the strength of the acting arm, the inner side of the acting arm is provided with a positioning convex part extending upwards in the left-right direction. Therefore, the strength of the acting arm is improved by arranging the positioning convex part, and meanwhile, when the clamping pin is installed, the clamping pin is positioned between the positioning convex part and the corresponding side wall of the left and right directions of the housing, so that the limiting effect on the clamping pin is achieved.

The utility model adopts the technical proposal for solving the second technical problem that: an electric energy meter, characterized in that: comprising a shell structure as described above.

Compared with the prior art, the utility model has the advantages that: through setting up the local elastic action arm that has, base and housing are in under the continuous state, and action arm offsets with the card foot and has the trend that makes the card foot support and lean on the joint portion to make card foot and joint portion connect more firm, be difficult to disengage, be favorable to base and housing firm connection.

Drawings

FIG. 1 is a schematic perspective view of an electric energy meter including a housing structure according to an embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of portion B of FIG. 2;

FIG. 5 is a schematic view of the other direction of FIG. 2;

FIG. 6 is an enlarged schematic view of portion C of FIG. 5;

FIG. 7 is an enlarged schematic view of portion D of FIG. 5;

fig. 8 is a cross-sectional view of fig. 1 taken along the direction E-E.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Referring to fig. 1 to 8, an electric energy meter including a housing structure according to an embodiment of the present utility model is shown. Wherein the housing structure comprises a base 1, a housing 2 and the like.

Specifically, the base 1 has an upwardly open accommodating cavity, the accommodating cavity has a clamping portion 11, a lower portion of the clamping portion 11 is an arc portion 113, an upper portion of the clamping portion 11 extends upwardly to form a blocking portion 111, the clamping portion 11 further has extension segments 112 respectively connected to a lower end of the blocking portion 111 and an inner wall of the housing 2, and the extension segments 112 extend in a left-right direction to form an accommodating cavity 11a between the clamping portion 11 and the inner wall of the housing 2. The number of the clamping parts 11 is two, and the clamping parts are distributed left and right along the base 1. The base 1 is also provided with action arms 12 which are distributed at intervals with the clamping parts 11, and part of the action arms 12 is made of elastic materials. Specifically, the acting arm 12 includes a first section 121 inclined downward and toward the catch 21, and the first section 121 is made of an elastic material. The action arm 12 further includes a second section 122 connected to an upper portion of the first section 121 and extending in a direction away from the engagement portion 11 (i.e., front-rear direction). The action arm 12 has an upwardly extending positioning projection 123 on the inner side.

The housing 2 is configured to be downwardly engaged with the base 1, and the housing 2 has a locking leg 21 that is locked to or separated from the locking portion 11 in the up-down direction. The number and positions of the engaging legs 21 correspond to the number and positions of the engaging portions 11. The lower part of the clamping leg 21 is provided with a positioning groove 212 for inserting the head part of the action arm 12; the orientation groove 212 extends in a direction that coincides with the insertion direction of the head of the actuating arm 12. The clip leg 21 has a reinforcing rib 211 formed by extending inward from a side wall located near the inner side of the housing 2 in the left-right direction. The clip leg 21 has an arc-shaped recess 213 into which the arc-shaped portion 113 extends and which is in rotational engagement, and a portion 21a of the clip leg 21 located in the accommodating chamber is located above the arc-shaped recess 213 in the left-right direction.

In the state where the base 1 and the housing 2 are connected, the action arm 12 abuts against the clip leg 21, and there is a tendency that the clip leg 21 abuts against the clip portion 11, and in the left-right direction, the blocking portion 111 serves to block the side wall of the clip leg 21, and the part 21a of the clip leg 21 is located in the housing chamber 11a.

In other embodiments, the clamping leg 21 may be disposed on the base 1 and the clamping portion 11 may be disposed on the housing 2, and the above-described housing structure may be used for other meters, or other products.

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

During installation, the clamping leg 21 of the housing 2 is aligned with the clamping portion 11 of the base 1, specifically, a part of the clamping leg 21 is located in the accommodating cavity, and then the housing 2 is rotated downwards, so that the clamping leg 21 and the clamping portion 11 are clamped, and meanwhile, the head of the acting arm 12 is inserted into the positioning groove 212. Thus, in the up-down direction, the locking pin 21 is locked with the locking part 11; the blocking part 111 and the side wall of the base 1 limit the clamping leg 21 in the left-right direction; in the front-rear direction, the clamping leg 21 is limited by the clamping part 11 and the action arm 12, so that the clamping leg 21 is firmly connected with the clamping part 11 and is not easy to disconnect, and the base 1 and the housing 2 are firmly connected.

When the cover is detached, the cover 2 is acted upwards, the clamping pin 21 of the cover 2 is separated from the clamping part 11, and the action arm 12 has elasticity and cannot interfere with the detaching process.

Claims

1. A housing structure comprises

The base (1) is provided with an upward-opening accommodating cavity, and a clamping part (11) is arranged in the accommodating cavity;

the housing (2) is used for being downward matched with the base (1), and the housing (2) is provided with a clamping foot (21) which is clamped with or separated from the clamping part (11) in the up-down direction;

the method is characterized in that:

the base (1) is internally provided with action arms (12) which are distributed at intervals with the clamping parts (11), and the action arms (12) are at least partially made of elastic materials;

when the base (1) and the cover (2) are in a connected state, the action arm (12) is abutted against the clamping leg (21) and has a tendency to enable the clamping leg (21) to be abutted against the clamping portion (11).

2. The housing structure of claim 1, wherein: the action arm (12) comprises a first section (121) which is downward and inclined towards the clamping leg (21), and the first section (121) is made of elastic materials.

3. The housing structure of claim 2, wherein: the action arm (12) further comprises a second section (122) connected to the upper part of the first section (121) and extending in a direction away from the clamping part (11).

4. A housing structure according to any one of claims 1 to 3, wherein: the lower part of the clamping foot (21) is provided with a positioning groove (212) for inserting the head part of the acting arm (12);

the extending direction of the positioning groove (212) is consistent with the inserting direction of the head of the action arm (12).

5. A housing structure according to any one of claims 1 to 3, wherein: the clip leg (21) has a reinforcing rib (211) formed by extending inward from a side wall located near the inner side of the housing (2) in the left-right direction.

6. A housing structure according to any one of claims 1 to 3, wherein: the lower part of the clamping part (11) is an arc part (113);

the clamping leg (21) is provided with an arc-shaped concave part (213) which is provided with the arc-shaped part (113) to extend into and be in rotary fit with.

7. The housing structure of claim 6 wherein: the upper part of the clamping part (11) extends upwards to form a blocking part (111);

the blocking part (111) is used for blocking the side wall of the clamping pin (21) in the left-right direction under the state that the base (1) and the housing (2) are connected.

8. The housing structure of claim 7 wherein: the clamping part (11) is also provided with an extension section (112) which is respectively connected with the lower end of the blocking part (111) and the inner wall of the housing (2), and the extension section (112) extends along the left-right direction so that a containing cavity (11 a) is formed between the clamping part (11) and the inner wall of the housing (2);

the base (1) and the housing (2) are in a connected state, and a part (21 a) of the clamping pin (21) is positioned in the accommodating cavity (11 a);

the part (21 a) of the clamping foot (21) positioned in the accommodating cavity is positioned above the arc-shaped concave part (213).

9. A housing structure according to any one of claims 1 to 3, wherein: the inner side of the action arm (12) is provided with a positioning convex part (123) extending upwards in the left-right direction.

10. An electric energy meter, characterized in that: comprising a housing structure according to any one of claims 1 to 7.