CN218471761U

CN218471761U - Direct current capacitor with positioning structure

Info

Publication number: CN218471761U
Application number: CN202222759466.2U
Authority: CN
Inventors: 王坤; 郭健强; 韩丽贞; 胡金梅
Original assignee: Guangdong Eaco Electronic Technology Co ltd
Current assignee: Guangdong Eaco Electronic Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-10
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a take location structure's direct current capacitor, include: the capacitor comprises a capacitor core, an electrode terminal, a terminal bracket and a shell; the electrode terminal is connected with the capacitor core through a copper strip; the electrode terminal may be fixed to the terminal bracket; the shell is provided with an accommodating cavity with an opening at the top; the capacitor core can be placed in the containing cavity, and two ends of the terminal support can be clamped at the top of the shell. The utility model discloses, electrode terminal passes through the copper strips and is connected with the electric capacity core to electrode terminal is fixed in on the terminal support, assembles into semi-manufactured goods capacitor subassembly, packs semi-manufactured goods capacitor subassembly into afterwards and accepts the intracavity, aligns the card with the both ends of terminal support and establishes at the top of shell, can keep the uniformity of the alignment of electrode terminal, electric capacity core and terminal support and shell. Glue and tool fixture auxiliary positioning are eliminated in the assembling process of the capacitor, and the consistency of production efficiency and product size precision is improved.

Description

Direct current capacitor with positioning structure

Technical Field

The utility model relates to a field, in particular to take location structure's direct current condenser.

Background

The direct current filter capacitor is a capacitor which is connected in parallel to a direct current bus after being applied to a rectifier bridge of the power electronic equipment and plays a role in smoothing voltage fluctuation of the bus. In recent years, with the development of technology, the power of power electronic equipment has advanced into the megawatt era, the number of direct current filter capacitors used by a single device is increased dramatically, and the capacitors are generally connected in parallel by adopting a whole composite copper bar, so that the electrode terminal of the direct current capacitor and a housing mounting hole are required to have higher dimensional accuracy, otherwise, the assembly of the composite copper bar is influenced.

In the prior art, a terminal bracket and a shell of the direct current capacitor are generally positioned by glue and a tool fixture in an auxiliary manner, so that the production efficiency is low, the dimensional accuracy consistency is poor, and the requirement of parallel connection of a plurality of capacitors of high-power equipment is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a take location structure's direct current capacitor.

The utility model discloses a technical scheme that its technical problem was solved to an embodiment adopted is: a DC capacitor with a positioning structure comprises: the capacitor comprises a capacitor core, an electrode terminal, a terminal bracket and a shell;

the electrode terminal is connected to the capacitor core through a copper strip; the electrode terminal may be fixed to the terminal bracket; the shell is provided with an accommodating cavity with an opening at the top; the capacitor core can be placed in the accommodating cavity, and two ends of the terminal support can be clamped at the top of the shell.

Optionally, the opposite sides of the top of the housing are provided with positioning steps, and the two ends of the terminal bracket can be set up to abut against the positioning steps.

Optionally, two ends of the terminal bracket are provided with first clamping parts; the positioning step is provided with a second clamping part matched with the first clamping part.

Optionally, the first clamping portion is a notch arranged at two ends of the terminal support in the middle; the second clamping part is an inverted buckle arranged on the positioning step; the reverse buckle can be clamped in the notch.

Optionally, the accommodating cavity is arranged in a cylindrical structure.

Optionally, a positioning extension plate is arranged at the bottom of the housing; the positioning extension plate is provided with a connecting hole.

Optionally, the accommodating cavity is filled with epoxy resin.

The utility model has the advantages that: the electrode terminal is connected with the capacitor core through the copper strip, and the electrode terminal is fixed on the terminal bracket to be assembled into a semi-finished capacitor assembly, then the semi-finished capacitor assembly is arranged in the accommodating cavity, and the two ends of the terminal bracket are aligned and clamped at the top of the shell, so that the alignment consistency of the electrode terminal, the capacitor core and the terminal bracket with the shell can be maintained. The utility model discloses, glue and frock clamp assistance-localization real-time have been cancelled to the assembling process of condenser, have improved the uniformity of production efficiency and product size precision.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible and obvious, preferred embodiments accompanied with figures are described in detail below.

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 diagram of a dc capacitor with a positioning structure according to the present invention;

FIG. 2 is an exploded view of the DC capacitor with a positioning structure shown in FIG. 1;

fig. 3 is a cross-sectional view of the dc capacitor with a positioning structure in fig. 1.

Description of the main element symbols:

10. a capacitor core; 20. an electrode terminal; 30. a terminal holder; 31. a first clamping part; 40. a housing; 41. positioning a step; 42. a second clamping part; 43. an extension plate; 44. connecting holes; 50. copper strips; 60. an accommodating cavity.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly defined, the terms "set," "installed," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Examples

Referring to fig. 1 to 3, the present invention provides a dc capacitor with a positioning structure, including: a capacitor core 10, an electrode terminal 20, a terminal holder 30 and a case 40;

the electrode terminal 20 is connected to the capacitor core 10 through a copper tape 50; the electrode terminal 20 may be fixed to the terminal bracket 30; the housing 40 is provided with a containing cavity 60 with an open top; the capacitor element 10 can be placed in the receiving cavity 60, and both ends of the terminal bracket 30 can be clamped on the top of the housing 40.

The utility model has the advantages that: the electrode terminal 20 is connected to the capacitor core 10 by the copper tape 50, and the electrode terminal 20 is fixed to the terminal support 30 to assemble a semi-finished capacitor assembly, and then the semi-finished capacitor assembly is loaded into the receiving cavity 60, and the two ends of the terminal support 30 are aligned and clamped on the top of the housing 40, so that the alignment consistency of the electrode terminal 20, the capacitor core 10 and the terminal support 30 with the housing 40 can be maintained. The utility model discloses, glue and frock clamp assistance-localization real-time have been cancelled to the assembling process of condenser, have improved the uniformity of production efficiency and product size precision.

Specifically, the opposite sides of the top of the housing 40 are provided with positioning steps 41, and both ends of the terminal holder 30 can be abutted against the positioning steps 41. The positioning steps 41 are matched with the outer contours of the two ends of the terminal support 30, and the terminal support 30 can be just arranged on the positioning steps 41 to keep the consistency of the assembly size precision.

In this embodiment, the terminal holder 30 is provided with first engaging portions 31 at both ends; the positioning step 41 is provided with a second engaging portion 42 adapted to the first engaging portion 31. The second engaging portion 42 is adapted to the first engaging portion 31, and can tightly fix the terminal holder 30 on the positioning step 41.

Specifically, the first clamping portion 31 is a notch centrally disposed at two ends of the terminal bracket 30; the second clamping portion 42 is an inverted buckle arranged on the positioning step 41; the reverse buckle can be clamped in the notch. The second joint portion 42 of back-off structure has certain deformability, presses down terminal support 30, even second joint portion 42 warp to with back-off lock joint on scarce groove, both inseparable locks keep the firm of terminal support 30 and shell 40 equipment.

The shape of the housing 40 and the shape of the receiving cavity 60 may be set according to the use scenario of the capacitor and the construction of the capacitor core 10. In the present embodiment, the receiving cavity 60 is disposed in a cylindrical structure.

Further, the bottom of the housing 40 is provided with a positioning extension plate 43; the positioning extension plate 43 is provided with a connection hole 44. The plastic housing 40 can be mounted in the power electronic device through the coupling hole 44.

In the present embodiment, the extension plate 43 and the connection hole 44 are provided in two, on opposite sides of the housing 40. In the axial projection of the housing 40, the connecting lines of the two connecting holes 44 are angularly offset from the connecting lines of the two electrode terminals 20, so as to provide more sufficient installation space for the electrode terminals 20 and the connecting holes 44.

In the present embodiment, after the semi-finished capacitor assembly and the housing 40 are assembled and fixed, the receiving cavity 60 is filled with epoxy resin under vacuum condition to achieve sealing.

Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.

Claims

1. A direct current capacitor with a positioning structure is characterized by comprising: a capacitor core (10), an electrode terminal (20), a terminal support (30) and a shell (40);

the electrode terminal (20) is connected to the capacitor core (10) through a copper strip (50); the electrode terminal (20) may be fixed to the terminal holder (30); the shell (40) is provided with an accommodating cavity (60) with an opening at the top; the capacitor core (10) can be placed in the accommodating cavity (60), and two ends of the terminal support (30) can be clamped at the top of the shell (40).

2. The direct current capacitor with positioning structure of claim 1, wherein: the relative both sides at shell (40) top are provided with location step (41), the both ends of terminal support (30) can set up lean on with location step (41).

3. The dc capacitor with positioning structure of claim 2, wherein: two ends of the terminal bracket (30) are provided with first clamping parts (31); the positioning step (41) is provided with a second clamping portion (42) matched with the first clamping portion (31).

4. The dc capacitor with positioning structure of claim 3, wherein: the first clamping part (31) is a notch arranged at two ends of the terminal bracket (30) in the middle; the second clamping part (42) is an inverted buckle arranged on the positioning step (41); the reverse buckle can be clamped in the notch.

5. The dc capacitor with positioning structure of claim 1, wherein: the accommodating cavity (60) is arranged in a cylindrical structure.

6. The dc capacitor with positioning structure of claim 1, wherein: a positioning extension plate (43) is arranged at the bottom of the shell (40); the positioning extension plate (43) is provided with a connecting hole (44).

7. The direct current capacitor with positioning structure of claim 1, wherein: the accommodating cavity (60) is filled with epoxy resin.