CN209947665U - Anti-shelling structure of thin film capacitor - Google Patents

Abstract

The utility model discloses a film capacitor unshelling prevention structure, including aluminum hull, apron and core package, the solid fixed ring of the vertical end top fixedly connected with of aluminum hull, gu fixed ring interior table wall is provided with concave piece, gu fixed ring top is provided with the holding ring with apron integrated into one piece, the holding ring bottom seted up with concave piece assorted constant head tank, concave piece passes through the constant head tank and is connected with the holding ring block. The utility model discloses in, through the design of concave piece and constant head tank for the aluminum hull combines the back with the apron, can effectively prevent that the casing from rotating, convenient assembly positioning, and the encapsulation material is fixed back in addition, and this structure can be big at the environmental temperature difference, can keep the fastness of structure under the big adverse conditions of vibration frequency, can effectively prevent the shelling, thereby prevent effectively that shelling phenomenon from appearing in dry-type direct current filtering film capacitor when the difference in temperature is great, improved dry-type direct current filtering film capacitor's result of use.

Description

Anti-shelling structure of thin film capacitor

Technical Field

The utility model relates to a film capacitor technical field especially relates to a film capacitor unshelling prevention structure.

Background

The film capacitor is a capacitor having a structure in which a metal foil is used as an electrode, and the metal foil is laminated with a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate from both ends thereof, and then wound into a cylindrical shape. The plastic film is also called a poly (ethyl ester) capacitor (also called a Mylar) capacitor, a polypropylene capacitor (also called a PP capacitor), a polystyrene capacitor (also called a PS capacitor) and a polycarbonate capacitor, respectively, depending on the type of the plastic film.

At present, the existing dry-type direct current filter film capacitor still has some defects, firstly, due to functional requirements, the temperature difference of the working environment of the dry-type direct current filter film capacitor is large, and an aluminum shell, a cover plate and a potting material are easily deformed under the influence of thermal expansion and cold contraction, so that the shell is separated from a main body, and the using effect of the dry-type direct current filter film capacitor is reduced; and secondly, due to the large environmental temperature difference, the core cladding in the dry type direct current filter film capacitor is easy to deform to cause the interlayer to fall off, and the interlayer falls off to ensure that the function of the dry type direct current filter film capacitor is not normally realized, so that the service life of the dry type direct current filter film capacitor is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the anti-shelling structure of the film capacitor is provided to solve the problem that a shell is easy to separate from a core cladding interlayer and the core cladding interlayer is easy to fall off when the temperature difference of the dry type direct current filter film capacitor is large.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a film capacitor unshelling prevention structure, includes aluminum hull, apron and core package, the vertical end top fixedly connected with solid fixed ring of aluminum hull, gu fixed ring inside surface wall is provided with the concave block, gu fixed ring top is provided with the holding ring with apron integrated into one piece, the holding ring bottom seted up with concave block assorted constant head tank, the concave block passes through the constant head tank and is connected with the holding ring block.

As a further description of the above technical solution:

the utility model discloses a structure of aluminium hull, including the vertical end of aluminium hull, table wall has the grip block through first spring elastic connection in the vertical end of aluminium hull, the grip block is provided with the multiunit, and all through connecting rod fixed connection between adjacent two sets of in the multiunit grip block, the connecting rod is two segmentation structures, and passes through second spring elastic connection between two sections, the stop collar has been cup jointed to the outer table wall of connecting rod.

As a further description of the above technical solution:

the concave block and the fixing ring are integrally formed.

As a further description of the above technical solution:

the limiting sleeve is connected with the connecting rod in a sliding mode, and the inner surface wall of the limiting sleeve is tightly attached to the second spring.

As a further description of the above technical solution:

the clamping plate and the connecting rod are both arc-shaped structures.

As a further description of the above technical solution:

the concave blocks and the positioning grooves are both provided with a plurality of concave blocks and are distributed in an annular shape.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through the design of concave piece and constant head tank for the aluminum hull combines the back with the apron, can effectively prevent that the casing from rotating, convenient assembly positioning, and the encapsulation material is fixed back in addition, and this structure can be big at the environmental temperature difference, can keep the fastness of structure under the big adverse conditions of vibration frequency, can effectively prevent the shelling, thereby prevent effectively that shelling phenomenon from appearing in dry-type direct current filtering film capacitor when the difference in temperature is great, improved dry-type direct current filtering film capacitor's result of use.

2. The utility model discloses in, apron and aluminum hull combine the back, and the core package is carried out the centre gripping location to the core package by multiunit connecting rod and second spring centre gripping, second spring through connecting rod pulling grip block, and the elastic potential energy through first spring and second spring has increased the antifatigue degree of core package to reduce the deformation degree of core package when the temperature is relatively poor, improved dry-type direct current filter film capacitor's life.

Drawings

Fig. 1 is a schematic structural diagram of a shelling-preventing structure of a thin film capacitor according to the present invention;

fig. 2 is a schematic structural view of a concave block and a positioning groove of an anti-shelling structure of a thin film capacitor according to the present invention;

fig. 3 is a schematic structural diagram of a connecting rod and a clamping plate of a thin film capacitor shelling-proof structure according to the present invention.

Illustration of the drawings:

1. a cover plate; 2. a positioning ring; 3. an aluminum shell; 4. a first spring; 5. a clamping plate; 6. a connecting rod; 7. a second spring; 8. a limiting sleeve; 9. a core package; 10. a concave block; 11. positioning a groove; 12. and (4) fixing the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a film capacitor unshelling prevention structure, including aluminum hull 3, apron 1 and core package 9, 3 vertical end top fixedly connected with solid fixed ring 12 of aluminum hull, gu fixed ring 12 interior table wall is provided with concave block 10, gu fixed ring 12 top is provided with the holding ring 2 with 1 integrated into one piece of apron, 2 bottom of holding ring set up with concave block 10 assorted constant head tank 11, concave block 10 passes through constant head tank 11 and is connected with 2 block of holding ring, through combining concave block 10 and constant head tank 11, make aluminum hull 3 and apron 1 combine the back, can effectively prevent aluminum hull 3 from rotating, with the fixed back of encapsulating material, this structure can be big at the environmental temperature difference, can keep the fastness of structure under the big adverse circumstances of vibration frequency, thereby prevent effectively that aluminum hull 3 from taking place to warp and main part when the difference in temperature is great, dry-type direct current filter film capacitor's result of use has been improved.

Specifically, as shown in fig. 1 and 3, the surface wall has a clamping plate 5 through 4 elastic connections of first spring in the vertical end of aluminum hull 3, clamping plate 5 is provided with the multiunit, and all through 6 fixed connection of connecting rod between adjacent two sets of in multiunit clamping plate 5, connecting rod 6 is two segmentation structures, and through 7 elastic connections of second spring between two sections, 6 outer surface walls of connecting rod have cup jointed stop collar 8, core package 9 is by multiunit connecting rod 6 and the 5 centre gripping of clamping plate, second spring 7 carries out the centre gripping location to core package 9 through 6 pulling clamping plate 5 of connecting rod, elastic potential energy through first spring 4 and second spring 7 supports the decompression to core package 9, core package 9's antifatigue degree has been increased, thereby the deformation degree of core package 9 when the temperature is relatively poor has been reduced, dry-type direct current filter film capacitor's life has been improved.

Specifically, as shown in fig. 2, the concave block 10 and the fixing ring 12 are integrally formed, so that the stability of the concave block 10 and the fixing ring 12 is improved.

Specifically, as shown in fig. 3, the stop collar 8 is connected with the connecting rod 6 in a sliding manner, the inner surface wall of the stop collar 8 is tightly attached to the second spring 7, the stop collar 8 ensures that the second spring 7 is vertically deviated, the stability of the second spring 7 is improved, and the core bag 9 is prevented from being blocked due to the direct contact between the second spring 7 and the core bag 9.

Specifically, as shown in fig. 3, the clamping plate 5 and the connecting rod 6 are both arc-shaped structures, and are attached to the structural characteristics of the core package 9, so that the clamping stability is improved.

Specifically, as shown in fig. 2, the concave blocks 10 and the positioning grooves 11 are both provided with a plurality of concave blocks 10 and are annularly distributed with the positioning grooves 11, so that the stability of the aluminum shell 9 and the cover plate 1 is improved, and the deflection degree of the aluminum shell 9 is reduced.

The working principle is as follows: during the use, through combining concave block 10 and constant head tank 11, make aluminium shell 3 and apron 1 combine the back, can prevent effectively that aluminium shell 3 from rotating, improved the convenience of positioning, in addition the encapsulation material is fixed the back, this structure can be big at the environmental temperature difference, can keep the fastness of structure under the big adverse conditions of vibration frequency, can effectively prevent shelling, thereby prevent effectively that aluminium shell 3 from taking place to warp and the main part breaks away from when the difference in temperature is great, dry-type direct current filtering film capacitor's result of use has been improved. After apron 1 combines with aluminum hull 3, core package 9 is by multiunit connecting rod 6 and the 5 centre grippings of grip block, and second spring 7 carries out the centre gripping location to core package 9 through connecting rod 6 pulling grip block 5, supports the decompression to core package 9 through the elastic potential energy of first spring 4 and second spring 7, has increased the antifatigue degree of core package 9 to reduce the deformation degree of core package 9 when the temperature is relatively poor, improved dry-type direct current filter film capacitor's life.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a film capacitor unshelling prevention structure, includes aluminum hull (3), apron (1) and core package (9), its characterized in that, the solid fixed ring of the vertical end top fixedly connected with (12) of aluminum hull (3), the table wall is provided with concave piece (10) in solid fixed ring (12), gu fixed ring (12) top is provided with holding ring (2) with apron (1) integrated into one piece, holding ring (2) bottom seted up with concave piece (10) assorted constant head tank (11), concave piece (10) are connected with holding ring (2) block through constant head tank (11).

2. The unshelling prevention structure for thin film capacitors according to claim 1, wherein the inner surface wall of the vertical end of the aluminum housing (3) is elastically connected with a plurality of clamping plates (5) through a first spring (4), the clamping plates (5) are provided with a plurality of sets, two adjacent sets of the plurality of sets of clamping plates (5) are fixedly connected through a connecting rod (6), the connecting rod (6) is of a two-segment structure, the two segments are elastically connected through a second spring (7), and a position-limiting sleeve (8) is sleeved on the outer surface wall of the connecting rod (6).

3. The unshelling structure of film capacitor of claim 1, wherein said concave block (10) is formed integrally with said fixing ring (12).

4. The unshelling prevention structure for film capacitors according to claim 2, wherein the position-limiting sleeve (8) is slidably connected to the connecting rod (6), and the inner surface wall of the position-limiting sleeve (8) is tightly attached to the second spring (7).

5. The shelling structure of thin-film capacitor as claimed in claim 2, wherein the clamping plates (5) and the connecting rods (6) are arc-shaped.

6. The shelling structure of thin film capacitor as claimed in claim 1, wherein the plurality of concave blocks (10) and positioning grooves (11) are disposed, and the plurality of concave blocks (10) and positioning grooves (11) are distributed in a ring shape.

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