CN222233471U - Capacitor and its shell sealing structure - Google Patents

Abstract

The utility model discloses a capacitor and a shell sealing structure thereof, wherein the shell sealing structure comprises a shell and a structural member, an opening is arranged at the end of the shell, one side of the opening extends outward and is bent upward to form a sealing portion, and a groove is arranged on the opening; the structural member is arranged on the opening, and the opening and the sealing portion define a glue coating area, and the structural member is sealed and connected to the shell by filling the sealant into the glue coating area; thus, by increasing the glue coating area, the glue sealing effect of the capacitor is improved, thereby reducing the production cost of the capacitor.

Description

Capacitor and shell sealing structure thereof

Technical Field

The utility model relates to the technical field of capacitors, in particular to a capacitor and a shell sealing structure thereof.

Background

In the related technology, along with the rapid development of the power electronic technology, the metallized film capacitor is also widely applied in the fields of industrial control, new energy, automobile electronics, rail transit, power grid and the like, and meanwhile, the product performance requirement of the capacitor is also higher.

In the industry at present, besides the auxiliary sealing of a silica gel piece, as shown in the figures 1-2, an opening surface assembling structural piece except a pouring cover of a shell is usually sealed by using the assistance of glue coating, but because the thickness of a shell wall of an injection molding shell 1 is thinner, the contact area of the shell 1 combined with the structural piece 2 is small, the sealing glue 3 is not easy to hang, when the glue coating amount is smaller, a semi-finished product after glue coating has higher probability of leakage after glue filling, and as shown in the figure 3, when the glue coating amount is larger, the sealing glue 3 has the glue overflow phenomenon in the assembling process, and the glue overflow is easy to cause the condition that the cleanliness of glue foreign matters exceeds the standard due to the turnover collision of a later logistics, thereby improving the production cost of a capacitor.

Disclosure of utility model

The present utility model aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, an object of the present utility model is to provide a sealing structure for a housing, which increases the glue spreading area, so that the sealing effect of the capacitor is good, and the production cost of the capacitor is reduced.

A second object of the utility model is to propose a capacitor.

In order to achieve the above purpose, an embodiment of the first aspect of the present utility model provides a sealing structure for a capacitor case, which includes a case, wherein an opening is formed at an end of the case, one side of the opening extends outwards and is bent upwards to form a sealing portion, a groove is formed on the opening, and a structural member is disposed on the opening, the opening and the sealing portion define a glue coating area, and the structural member and the case are connected in a sealing manner by filling sealant into the glue coating area.

According to the shell sealing structure of the capacitor, the end part of the shell is provided with the opening, one side of the opening extends outwards and is bent upwards to form the sealing part, the opening is provided with the groove, the structural part is arranged on the opening, the opening and the sealing part define the gluing area, and the structural part and the shell are in sealing connection by filling the gluing area with the sealant, so that the sealing effect of the capacitor is good by increasing the gluing area, and the production cost of the capacitor is reduced.

In addition, the sealing structure of the casing of the capacitor according to the embodiment of the present utility model may further have the following additional technical features:

Optionally, a boss is further disposed on the opening, and the structural member is disposed on the boss.

Optionally, the number of the bosses is multiple, and the bosses are uniformly distributed in the grooves on the opening.

Optionally, the height of the outer side wall of the groove is higher than the height of the inner side wall of the groove.

Optionally, the sealing part comprises an extending edge and a bending edge, and the extending edge is perpendicular to the bending edge

In order to achieve the above object, a second aspect of the present utility model provides a capacitor, which includes the above-mentioned housing sealing structure.

According to the capacitor provided by the embodiment of the utility model, the shell sealing structure is included, so that the glue sealing effect of the capacitor is good by adding the glue coating area, and the production cost of the capacitor is reduced.

Drawings

FIG. 1 is a schematic view of a cross-sectional exploded view of a prior art housing seal arrangement;

FIG. 2 is a schematic cross-sectional view of a prior art housing seal arrangement;

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

FIG. 4 is a schematic view of a cross-sectional exploded view of a housing seal arrangement according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a sealing structure of a housing according to an embodiment of the present utility model;

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

FIG. 7 is a schematic cross-sectional exploded view of a housing seal arrangement in accordance with one embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view of a housing seal arrangement according to one embodiment of the present utility model;

fig. 9 is an enlarged schematic view of the section I in fig. 8.

Description of the reference numerals

The sealing device comprises a shell 1, an opening 11, a sealing part 12, a groove 111, a boss 112, an outer side wall 1112, an inner side wall 1113, an extension edge 121 and a bending edge 122, a structural member 2 and sealing glue 3.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

As shown in fig. 4 to 6, the case sealing structure of the capacitor according to the embodiment of the present utility model includes a case 1 and a structural member 2.

The end part of the shell 1 is provided with an opening 11, one side of the opening 11 extends outwards and is bent upwards to form a sealing part 12, the opening 11 is provided with a groove 111, the structural part 2 is arranged on the opening 11, the opening 11 and the sealing part 12 define a gluing area, and the sealing glue 3 is filled into the gluing area to enable the structural part 2 to be connected with the shell 1 in a sealing mode.

That is, the structural member 2 is placed on the opening 11 to cover the housing 1, and the sealant 3 is filled between the structural member 2 and the glue coating area to make the structural member 2 and the housing 1 be in sealing connection, thereby widening the glue coating area to increase the glue coating area of the sealant, and providing the groove 111 at the opening 11 to increase the redundant space for filling the sealant 3, ensuring sufficient combination of the housing 1 and the sealant 3 after assembly, so that the sealant 3 can enter the groove 111 after filling the sealant 3 of the same amount, and further reducing the overflow phenomenon of the sealant 3.

As an example, a boss 112 is further provided on the opening 11, and the structural member 2 is provided on the boss 112.

That is, as shown in fig. 7-9, by disposing the boss 112 at the opening 11 and disposing the structural member 2 on the boss 112, a certain accommodating space is provided between the structural member 2 and the opening 11, through which the sealant 3 is accommodated, the phenomenon that the sealant 3 overflows to the outside can be further reduced, and the success rate of the sealant is further improved.

As an example, as shown in fig. 7-9, the number of the bosses 112 is plural, and the plural bosses 112 are uniformly distributed in the grooves 111 on the opening 11.

That is, the height of the boss 112 is higher than the depth of the groove 111, and the positioning connection between the structural member 2 and the boss 112 can be provided by uniformly distributing the plurality of bosses 112 in the groove 111 on the opening 11, thereby restricting the relative position between the structural member 2 and the housing 1.

As an example, as shown in fig. 7-9, the height of the outer sidewall 1112 of the groove 111 is higher than the height of the inner sidewall 1113 of the groove 111.

That is, the height of the inner side and the outer side of the notch of the groove is further adjusted, and the height of the inner side area of the glue filling of the shell 1 is generally lower, so that the sealant 3 can be guided to overflow and scatter towards the inner side of the shell 1 when the structural member 2 and the shell 1 are assembled, the sealant 3 is reduced to run towards the outer side of the shell 1, and the generated cleanliness and poor appearance of a finished capacitor product are avoided.

To sum up, the gluing area is increased with the boss 112, and the height of the inner side of the notch of the groove 111 is reduced, when the equal amount of sealant 3 is smeared, the sealant 3 is filled into the gluing notch, so that the sealant 3 can be guided to flow towards the inner side of the shell 1, the overflow phenomenon of the sealant 3 towards the outer side is further reduced, and the success rate of the sealant is further improved.

As an example, the sealing portion 12 includes an extension edge 121 and a folded edge 122, and the extension edge 121 is perpendicular to the folded edge 122.

That is, a bending edge 122 perpendicular to the structural member 2 is disposed outside the structural member 2, and the sealing connection between the structural member 2 and the housing 1 is completed by filling the sealant 3 into the rubberized area between the structural member 2 and the bending edge 122.

In summary, according to the shell sealing structure of the capacitor, the end part of the shell is provided with the opening, one side of the opening extends outwards and is bent upwards to form the sealing part, the opening is provided with the groove, the structural part is arranged on the opening, the opening and the sealing part define the gluing area, and the structural part and the shell are in sealing connection by filling the gluing area with the sealant, so that the gluing effect of the capacitor is good by increasing the gluing area, and the production cost of the capacitor is reduced.

In addition, the embodiment of the utility model also provides a capacitor, which comprises a shell sealing structure, and the shell sealing structure is adopted for sealing, so that the sealing effect of the capacitor is good, and the production cost of the capacitor is reduced.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed 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. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (6)

1. A case sealing structure of a capacitor, comprising:

the shell is provided with an opening at the end part, one side of the opening extends outwards and is bent upwards to form a sealing part, and a groove is formed in the opening;

The structural member is arranged on the opening, the opening and the sealing part define a gluing area, and the sealing glue is filled in the gluing area so that the structural member is in sealing connection with the shell.

2. The capacitor case seal structure of claim 1, wherein a boss is further provided on the opening, and the structural member is provided on the boss.

3. The capacitor case sealing structure of claim 2, wherein the plurality of bosses are uniformly distributed in the grooves on the opening.

4. The capacitor case sealing structure of claim 1, wherein the height of the groove outer side wall is higher than the height of the groove inner side wall.

5. The capacitor case sealing structure of claim 1, wherein the sealing portion includes an extension side and a folded side, the extension side being perpendicular to the folded side.

6. A capacitor comprising the case sealing structure according to any one of claims 1 to 5.