CN210182233U - Multi-leading-out terminal surface-mounted high-voltage capacitor plastic shell - Google Patents

Abstract

The utility model discloses a draw forth end table formula high voltage capacitor plastic casing more, which comprises an outer shell body, shell body's one end opening and other conch walls are sealed, shell body's opening end edge is equipped with a plurality of installations that are used for draw forth drawing piece location breach of drawing forth the piece of end, the degree of depth of drawing forth piece location breach is not less than draw forth the thickness of drawing forth the piece of end. The utility model discloses an opening end edge at housing body sets up a plurality of piece location breachs of drawing forth, has ensured that the table pastes formula high voltage capacitor draws forth the uniformity that draws forth the piece position of end, can form the standardized piece position of drawing forth, the later stage of being convenient for welds the dress, strong adaptability draws forth the piece in addition and no longer protrusion in housing body's open end terminal surface, and the reducible excessive of encapsulating material when carrying out the embedment to the high-voltage circuit who contains high voltage capacitor guarantees that the condenser welds the dress back and hugs closely the circuit board.

Description

Multi-leading-out terminal surface-mounted high-voltage capacitor plastic shell

Technical Field

The utility model relates to a table pastes formula high voltage capacitor plastic casing especially relates to a many lead out end table pastes formula high voltage capacitor plastic casing.

Background

With the increasing automation degree of capacitor assembly, the electrical installation mode of high-voltage capacitors gradually develops from plug-in type to surface mounting type. The high-voltage capacitor is generally large in size, and the reliability of the capacitor after welding can be guaranteed by adopting a plurality of surface-mounted leading-out end structures. However, capacitors with different specifications generally need lead-out terminals with different numbers, so that complexity of lead-out structure design and production is increased, meanwhile, lead-out terminals with different numbers and different positions are not beneficial to later-stage welding, and adaptability is poor.

In addition, in order to reduce the volume of the high-voltage circuit, it is generally necessary to encapsulate the entire high-voltage circuit including the high-voltage capacitor. Corners of a traditional high-voltage capacitor plastic shell have obvious edges and smooth surfaces, the edges and corners generate concentrated stress after being potted, the edges and corners are easy to crack when being subjected to vibration or impact and develop along a potting interface, finally, a potting structure is failed, and reliability is reduced; and the adhesion between the smooth surface of the traditional high-voltage capacitor plastic shell and the potting material is weak, so that the capability of cracking resistance of a potting interface is further reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can carry out the many of effective standardized location to the piece of drawing forth of a plurality of ends and draw forth end table formula high voltage capacitor plastic casing just in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model provides a many lead out terminal table pastes formula high voltage capacitor plastic casing, includes the shell body, the one end opening and other conch walls of shell body are sealed, the edge of the opening end of shell body is equipped with a plurality of and is used for installing the piece location breach of leading out of the piece of leading out of terminal, the degree of depth of leading out piece location breach is not less than the thickness of the piece of leading out of terminal. When in use, the leading-out piece of the leading-out end is arranged in the leading-out piece positioning notch to realize the purpose of positioning.

According to the practical application requirement, the wall surfaces of two ends of the leading-out piece positioning notch are inclined planes, the width of the top of the leading-out piece positioning notch is smaller than that of the bottom of the leading-out piece positioning notch, and the width of the top of the leading-out piece positioning notch is slightly smaller than that of the leading-out piece of the leading-out end; or, draw the plane that the both ends wall of piece location breach is parallel to each other, be located on the open end terminal surface of housing body draw the outer position in piece location breach both ends and be equipped with heavy groove respectively, the tank bottom of heavy groove is equipped with the jack, and the inboard both ends of the location apron of bar are equipped with the projection respectively and the projection inserts correspondingly in the jack, the projection inserts correspondingly when in the jack the outside surface of location apron is not higher than housing body's open end terminal surface just the inboard surface of location apron with draw the interval between the bottom of piece location breach and be not less than draw the thickness of the piece of drawing forth of end. In the two structures, the leading-out piece of the leading-out end is more convenient and quicker to position, the leading-out piece is pressed into the leading-out piece positioning notch by force, and the leading-out piece can be prevented from sliding out of the leading-out piece positioning notch by utilizing the structure with the narrow outer part and the wide inner part of the leading-out piece positioning notch; the latter can install more stably, reliably and draw the piece, will draw the piece and place the piece in draw piece location breach in back, utilize the projection of location apron with it install on the open end terminal surface of shell body fast, stably and to drawing the piece realization more stable location.

Preferably, the number of the positioning notches of the leading-out sheet is 2-7, the depth is 0.3-1.0 mm, and the width is 3.0-7.0 mm.

Furthermore, in order to improve the capability of resisting the cracking of the encapsulation interface, the corner of the shell body is of an arc transition structure, and the arc radius of the arc transition structure is 1.0-4.0 mm.

Furthermore, in order to improve the adhesive force between the surface of the shell body and the potting material and improve the capability of resisting the cracking of the potting interface, the roughness of the inner surface and the roughness of the outer surface of the shell body are 3.2-12.5.

The beneficial effects of the utility model reside in that:

the utility model discloses a set up a plurality of drawing sheet location breach at the edge of the opening end of shell body, guaranteed the uniformity of drawing sheet position of surface mounted high voltage capacitor drawing end, can form standardized drawing sheet position, the later stage of being convenient for welds dress, strong adaptability, and the drawing sheet no longer protrudes in the open end terminal surface of shell body, and the excessive of potting compound when reducible capacitor core embedment is guaranteed to the condenser and is welded the back and hug closely the circuit board; the corner of the shell body is designed into an arc transition structure, so that the concentrated stress generated at the corner after the capacitor is externally potted can be reduced, and the potting reliability of the high-voltage circuit is improved; the inner surface and the outer surface of the shell body are roughened, so that the bonding force between the inner and outer potting materials of the capacitor and the shell body can be improved, and the cracking resistance of the inner and outer potting interfaces is improved.

Drawings

Fig. 1 is a schematic structural view of a multi-terminal surface-mount high-voltage capacitor plastic case according to embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic structural view of a multi-terminal surface-mount high-voltage capacitor plastic case according to embodiment 2 of the present invention;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

fig. 5 is a left side view schematic diagram of the positioning cover plate according to embodiment 2 of the present invention, wherein the view angle is the same as that of fig. 4 but the scale is larger than that of fig. 3 and 4.

Detailed Description

The invention will be further described with reference to the following examples and drawings:

example 1:

as shown in fig. 1 and 2, a multi-leading-out end surface-mounted high-voltage capacitor plastic shell comprises a shell body 1, one end of the shell body 1 is open, and other shell walls are closed, the edges of two opposite sides of the open end 2 of the shell body 1 are provided with six leading-out piece positioning notches 3 (the number is determined according to actual requirements) for mounting leading-out pieces (not shown) of the leading-out end, and the depth of each leading-out piece positioning notch 3 is not less than the thickness of the leading-out piece of the leading-out end; the wall surfaces of two ends of the leading-out piece positioning notch 3 are inclined planes, the width of the top of the leading-out piece positioning notch 3 is smaller than that of the bottom, and the width of the top of the leading-out piece positioning notch 3 is slightly smaller than that of a leading-out piece of the leading-out end; the number of the leading-out piece positioning notches is preferably 2-7, the depth is preferably 0.3-1.0 mm, and the width is preferably 3.0-7.0 mm; the corner 4 of the shell body 1 is of an arc transition structure, and the radius of an arc is 1.0-4.0 mm; the roughness of the inner surface and the outer surface of the shell body 1 is 3.2-12.5.

As shown in fig. 1 and fig. 2, when assembling, the electronic component of the high-voltage capacitor is placed in the housing body 1, and the lead-out pieces of the plurality of lead-out terminals are correspondingly placed in the plurality of lead-out piece positioning notches 3; then carry out the embedment to the condenser core, because draw the piece no longer protrusion in the terminal surface of the open end 2 of shell body 1, so the encapsulating material is excessive very little during the embedment, draws piece fixed position and standard after the embedment, and the later stage of being convenient for is welded and is adorned, guarantees that the condenser is welded and is hugged closely the circuit board after adorning, strong adaptability. The corner 4 of the processed surface-mounted high-voltage capacitor is designed into an arc transition structure, so that the concentrated stress generated at the corner after the capacitor is externally potted can be reduced, and the potting reliability of a high-voltage circuit is improved; and the binding power between the potting material and the shell body 1 with the roughened inner and outer surfaces is strong, so that the cracking resistance of the inner and outer potting interfaces is improved.

Example 2:

as shown in fig. 3, 4 and 5, a multi-leading-out-end surface-mounted high-voltage capacitor plastic shell comprises a shell body 1, wherein one end of the shell body 1 is opened, other shell walls are closed, the edges of two opposite sides of the opening end 2 of the shell body 1 are provided with six leading-out piece positioning notches 6 (the number is determined according to actual requirements) for mounting leading-out pieces (not shown) of the leading-out ends, and the depth of each leading-out piece positioning notch 6 is greater than the thickness of each leading-out piece of the leading-out ends; the wall surfaces of two ends of the lead-out piece positioning notch 6 are planes which are parallel to each other, the positions, which are positioned outside the two ends of the lead-out piece positioning notch 6, on the end surface of the open end 2 of the shell body 1 are respectively provided with a sinking groove (invisible in the figure), the bottom of the sinking groove is provided with a jack (invisible in the figure), the two ends of the inner side of the strip-shaped positioning cover plate 5 are respectively provided with a convex column 7, the convex columns 7 are inserted into the corresponding jacks, the outer side surface of the positioning cover plate 5 is not higher than the end surface of the open end 2 of the shell body 1 when the convex columns 7 are inserted into the corresponding jacks, and the distance between the inner side surface of the positioning cover plate 5 and the bottom of the lead-out piece positioning notch 6; the number of the leading-out piece positioning notches 6 is preferably 2-7, the depth is preferably 0.3-1.0 mm, and the width is preferably 3.0-7.0 mm; the corner 4 of the shell body 1 is of an arc transition structure, and the radius of an arc is 1.0-4.0 mm; the roughness of the inner surface and the outer surface of the shell body 1 is 3.2-12.5.

Description of the drawings: the tab positioning notch 6 of embodiment 2 is named the same as the tab positioning notch 3 of embodiment 1, but has a different structure, and therefore, different reference numerals are used.

As shown in fig. 3, 4 and 5, when assembling, the electronic component of the high-voltage capacitor is placed in the housing body 1, the lead-out pieces of the plurality of lead-out ends are correspondingly placed in the plurality of lead-out piece positioning notches 6, and then the convex columns 7 on the inner side of the positioning cover plate 5 are inserted into the corresponding insertion holes, that is, the lead-out pieces are stably positioned and installed in the lead-out piece positioning notches 6; then carry out the embedment to the condenser core, owing to draw forth piece and positioning cover plate 5 all not protrusion in the terminal surface of the open end 2 of shell body 1, so the encapsulating material overflow is very few during the embedment, draws forth piece rigidity and standard after the embedment, and the later stage of being convenient for is welded and is adorned, guarantees that the condenser is hugged closely the circuit board after welding, strong adaptability. The corner 4 of the processed surface-mounted high-voltage capacitor is designed into an arc transition structure, so that the concentrated stress generated at the corner after the capacitor is externally potted can be reduced, and the potting reliability of a high-voltage circuit is improved; and the binding power between the potting material and the shell body 1 with the roughened inner and outer surfaces is strong, so that the cracking resistance of the inner and outer potting interfaces is improved.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims (5)

1. The utility model provides a many leading-out terminals table pastes formula high voltage capacitor plastic casing, includes the shell body, the one end opening of shell body and other conch walls are sealed, its characterized in that: the edge of the opening end of the shell body is provided with a plurality of leading-out piece positioning notches for mounting leading-out pieces of the leading-out end, and the depth of each leading-out piece positioning notch is not smaller than the thickness of each leading-out piece of the leading-out end.

2. The plastic housing for a multi-terminal surface-mount high-voltage capacitor of claim 1, wherein: the wall surfaces of two ends of the leading-out piece positioning notch are inclined planes, the width of the top of the leading-out piece positioning notch is smaller than that of the bottom of the leading-out piece positioning notch, and the width of the top of the leading-out piece positioning notch is slightly smaller than that of a leading-out piece of the leading-out end; or, draw the plane that the both ends wall of piece location breach is parallel to each other, be located on the open end terminal surface of housing body draw the outer position in piece location breach both ends and be equipped with heavy groove respectively, the tank bottom of heavy groove is equipped with the jack, and the inboard both ends of the location apron of bar are equipped with the projection respectively and the projection inserts correspondingly in the jack, the projection inserts correspondingly when in the jack the outside surface of location apron is not higher than housing body's open end terminal surface just the inboard surface of location apron with draw the interval between the bottom of piece location breach and be not less than draw the thickness of the piece of drawing forth of end.

3. The plastic housing for a multi-terminal surface-mount high-voltage capacitor of claim 2, wherein: the number of the leading-out piece positioning notches is 2-7, the depth is 0.3-1.0 mm, and the width is 3.0-7.0 mm.

4. A multi-terminal surface mount high voltage capacitor plastic case of claim 1, 2 or 3, wherein: the corner of the shell body is of an arc transition structure, and the radius of an arc of the shell body is 1.0-4.0 mm.

5. A multi-terminal surface mount high voltage capacitor plastic case of claim 1, 2 or 3, wherein: the roughness of the inner surface and the outer surface of the shell body is 3.2-12.5.

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