CN201765956U

CN201765956U - Shell for direct-current filter capacitor

Info

Publication number: CN201765956U
Application number: CN201020538715XU
Authority: CN
Inventors: 何文钜
Original assignee: FOSHAN SHUANDE FENGMING ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Guangdong Fengming Electronic Tech. Co., Ltd.
Priority date: 2010-09-21
Filing date: 2010-09-21
Publication date: 2011-03-16
Anticipated expiration: 2020-09-21

Abstract

The utility model discloses a shell for a direct-current filter capacitor. The shell comprises a shell body and a capacitor core, wherein the capacitor core is arranged in the shell; encapsulation resin is poured between the capacitor core and the shell; the shell is provided with at least one arc; the center of the bottom wall surface of the arc shell is provided with a mounting hole; the capacitor core is arranged on the corresponding arc shell; a positioning piece is arranged at the bottom between the capacitor cores; the positioning piece is matched with the mounting hole for installation so that the capacitor cores are arranged in the center inside the arc shell and a leading-out electrode is stable and balanced. A groove is formed in the shell so that the welding parts of the positioning piece and the capacitor cores are effectively avoided, the end faces of the cores are attached to the bottom wall surface of the shell more stably and accurately to reduce the space and save the consumption of the encapsulation resin, the production is easier, the quality of a product is ensured, the attractiveness of the product is ensured and the production cost is reduced.

Description

A kind of shell that is used for DC filter capacitors

Technical field

The utility model relates to a kind of shell of capacitor, particularly a kind of shell that is used for DC filter capacitors.

Background technology

A kind of electronic component that DC filter capacitors is industry, commercial appliance equipment is commonly used is widely used on the power filter of each electric equipment.Existing plastic casing is generally the rectangle shell, and the outward appearance of capacitor is not attractive in appearance, and when capacitor assembled, very unstable in the enclosure, the difficult location of capacitor body was placed in the middle.The space of enclosure is big, needs a lot of potting resins to fill, and has increased production cost.Because the housing volume is excessive, housing mid portion intensity distributions is inhomogeneous, has shrinkage phenomenon, influences outward appearance.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of space that utilizes simple and reasonable for structure is provided, and fixedly mounts capacitor core easily, increases the service life, guarantees the shell of attractive in appearance and the DC filter capacitors that reduces cost.

Goal of the invention of the present utility model is achieved in that a kind of shell of DC filter capacitors, comprise housing, capacitor core, capacitor core is installed in the housing, pour into potting resin between capacitor core and the housing, it is characterized in that: described housing is made as at least one circular arc, circular arc shell bottom wall face central authorities are provided with installing hole, capacitor core more than two or two is installed on the corresponding circular arc housing, the bottom is provided with keeper between the capacitor core, the installation that matches of keeper and installing hole makes capacitor core be installed on the central authorities of circular arc enclosure interior.

Described circular arc housing comprises the annulus wall more than two or two, middle buttress and the diapire face strengthened, and the middle buttress of strengthening is arranged between the annulus wall, and the diapire face is arranged at annulus wall bottom.

Strengthening buttress in the middle of described is the middle buttress of strengthening of "T"-shaped shape.

The inside of described diapire face is groove, thereby makes the outside of diapire face form buttress, and installing hole is arranged at the central authorities of diapire face.

Form figure of eight annulus wall between the described annulus wall, the circular arc of the corresponding figure of eight annulus of capacitor core wall and the installation that matches with it.

Described keeper is public exit nut.

Described keeper and integrally welded with the capacitor core bottom, and be fixedly installed in the installing hole.

The utility model improves the shell of existing DC filter capacitors, it is by being benchmark with the capacitor core contour shape, housing is made as the circular arc housing, the circular arc housing bottom is provided with installing hole, the bottom is provided with keeper between capacitor core and the capacitor core, effectively reduced outside the space of housing, make the assembling of capacitor core and housing easily, guarantee that capacitor core fixedly is in the central authorities in the housing, avoided the situation of capacitor core difficult location placed in the middle in housing, made the stable and balance of extraction electrode.And, inside is made as groove, effectively avoided the welding portion of keeper and capacitor core, it is more steady accurate that core body end face and shell bottom wall face are fitted, thereby reduce the space, saves the consumption of potting resin, make to produce and be more prone to, guarantee also to guarantee the attractive in appearance of this product outside the quality of this product, and reduce production costs again.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment.

Accompanying drawing 2 is the structural representation of another angle of the utility model embodiment.

Accompanying drawing 3 is the assembled state cutaway view of the utility model embodiment.

Accompanying drawing 4 is the user mode figure of another angle of the utility model embodiment.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

According to Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the shell of a kind of DC filter capacitors described in the utility model, it comprises housing 1, capacitor core 2, capacitor core 2 is installed in the housing 1, pours into potting resin between capacitor core 2 and the housing 1.Wherein, housing 1 is made as the housing 1 of at least one circular arc, circular arc housing 1 bottom center is provided with installing hole 3, capacitor core 2 more than two or two is installed on the corresponding circular arc housing 1, after capacitor core 2 bottoms and keeper 4 welding, with keeper 4 external diameters is that benchmark is installed in the installing hole 3, thereby makes capacitor core 2 be in the central authorities of 1 li of housing.

For the utility model outer cover intensity improves and capacitor core is installed more stable, guarantee the quality of product, above-mentioned circular arc housing 1 comprises the annulus wall 6 more than two or two, middle buttress 5 and the diapire face 7 strengthened, the middle buttress 5 of strengthening is arranged between the annulus wall 6, diapire face 7 is arranged at annulus wall 6 bottoms, and middle reinforcement buttress 5 is the middle buttress 5 of strengthening of "T"-shaped shape.According to actual conditions, the utility model is provided with two annulus walls 6, and these two annulus walls 6 interconnect, and forms figure of eight shape annulus wall 6, and the junction strengthens buttress 5 in the middle of being provided with, thereby has improved the middle part intensity of circular arc housing 1.And, the installation that matches of the circular arc of capacitor core 2 corresponding figure of eight annulus walls 6, and join with the inner bottom surface of diapire face 7, keeper 4 is welded as a whole with capacitor core 2 bottom surface adjacent, this keeper 4 is public exit nut, the installation that matches with installing hole 3 of public exit nut.Installing hole 3 is arranged at the central authorities of diapire face 7, guarantee that capacitor core 2 is in circular arc housing 1 central interior, because diapire face 7 inside are groove, thereby make the outside of diapire face 7 form buttress 8, installing hole 3 is arranged at the central authorities of buttress 8, and then effectively avoided the welding portion of public exit nut and capacitor core 2, make the bottom surface of capacitor core 2 and housing 1 inner bottom wall fit more steady and accurate.

The utility model replaces traditional rectangular housing 1 with circular arc housing 1, not only guarantees attractive in appearancely, and the space of reducing

housing

1 and 2 of capacitor cores is reduced the use amount of perfusion encapsulating epoxy resin, reduction use cost effectively.And, by combining of keeper 4 and installing hole 3, use capacitor core 2 steadily and securely to be installed on the central authorities of circular arc housing 1, avoided the situation of capacitor core 2 difficult location placed in the middle in housing 1, make the stable and balance of extraction electrode, be more prone to thereby use to produce, guarantee the quality and the good looking appearance of this product.

Claims

1. shell that is used for DC filter capacitors, comprise housing (1), capacitor core (2), capacitor core (2) is installed on housing (1) lining, pour into potting resin between capacitor core (2) and the housing (1), it is characterized in that: described housing (1) is made as the circular arc housing (1) of at least one, circular arc housing (1) bottom center is provided with installing hole (3), capacitor core (2) more than two or two is installed on the corresponding circular arc housing (1), bottom between the capacitor core (2) is provided with keeper (4), the installation that matches of keeper (4) and installing hole (3) makes capacitor core (2) be installed on circular arc housing (1) central interior.

2. according to the described DC filter capacitors shell of claim 1, it is characterized in that: described circular arc housing (1) comprises the annulus wall (6) more than two or two, middle buttress (5) and the diapire face (7) strengthened, the middle buttress (5) of strengthening is arranged between the annulus wall (6), and diapire face (7) is arranged at annulus wall (6) bottom.

3. according to the described DC filter capacitors shell of claim 2, it is characterized in that: strengthen buttress (5) in the middle of described for strengthening buttress (5) in the middle of the "T"-shaped shape.

4. according to the described DC filter capacitors shell of claim 2, it is characterized in that: the inside of described diapire face (7) is groove, thereby makes the outside of diapire face (7) form buttress (8), and installing hole (3) is arranged at the central authorities of buttress (8).

5. according to the described DC filter capacitors shell of claim 2, it is characterized in that: form figure of eight annulus wall (6) between the described annulus wall (6), the circular arc of capacitor core (2) corresponding figure of eight annulus wall (6) and the installation that matches with it.

6. according to the described DC filter capacitors shell of claim 1, it is characterized in that: described keeper (4) is public exit nut.

7. according to the described DC filter capacitors shell of claim 6, it is characterized in that: the bottom that described keeper (4) is adjacent with capacitor core (2) is welded as a whole, and is fixedly installed in the installing hole (3).