CN205159100U - Capacitor - Google Patents
Capacitor Download PDFInfo
- Publication number
- CN205159100U CN205159100U CN201520834282.5U CN201520834282U CN205159100U CN 205159100 U CN205159100 U CN 205159100U CN 201520834282 U CN201520834282 U CN 201520834282U CN 205159100 U CN205159100 U CN 205159100U
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- China
- Prior art keywords
- crimping
- capacitor
- housing
- end cap
- sealing
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Abstract
The utility model provides a capacitor belongs to capacitor and makes technical field. It has been solved, and current capacitor leakproofness is poor, life low grade technical problem. This capacitor includes that one end is sealed, the other end has open -ended tube -shape casing, is equipped with the electric capacity core in the casing, and the peripheral parcel of electric capacity core has insulating medium, and the opening part of casing is equipped with and is used for sealing the open -ended end cover, and the edge of end cover has the outside that turn -up no. 1 and turn -up no. 1 are located the casing, is equipped with annular slice sealing member between turn -up no. 1 and the casing, being connected with on the electric capacity core and passing the end cover and stretch out the outer wire of casing, the side of end cover has to the sunken recess in casing inside, and the recess intussuseption is filled with the sealing resin. The utility model discloses well capacitor's end cover is connected with the casing through turn -up no. 1 to strengthen sealed effect through setting up the sealing washer, still through setting up the further lift -off seal nature of sealing resin.
Description
Technical field
The utility model belongs to technical field of electronic devices, relates to a kind of capacitor arrangement of improvement.
Background technology
Capacitor is a large amount of electronic device used in electronic equipment, be widely used in circuit every aspects such as straight-through friendship, coupling, bypass, filtering, resonant tank, power conversion, controls; Capacitor is made up of the pole plate at two ends and middle insulation dielectric, and two insulated from each other and very near conductor of being separated by forms electrical potential difference after powered up, and when the voltage of two conductors is increased to a certain degree, reach puncture voltage, electric capacity has been not just insulator.In order to assemble with easy to use, existing capacitor has metal shell and cover plate usually, conductor extend in metal shell, sealed capacitor is used for again inner by cover plate, prevent from contacting with external environment, but because electronic device easily produces heat, capacitor is once expanded by heating or cooling meat, gap will be there is in cover plate with metal shell, capacitor can not work in a liquid because of poor sealing, operational environment is restricted, and the bad capacitor that also easily makes of capacitor sealing is damaged, and reduces useful life.
China's patent (notification number: 203941811U, the day for announcing: 2014.11.12) disclose a kind of capacitor, comprise metal shell, cover plate and capacitor core, dielectric is filled with between metal shell and capacitor core, dielectric wraps capacitor core completely, metal shell inside is provided with the projection for supporting cover plate, metal shell coordinates with cover plate for sealing, cover plate is provided with the pad of anchor leg and positive and negative electrode, cover plate is provided with the sealing resin of one deck for seal cover board, the edge of sealing resin is provided with the sealing ring be sealed and matched with metal shell, sealing ring and sealing resin closely cooperate, described metal shell top end is provided with the aduncate arc section coordinated with sealing ring, dielectric has flexible fire retardant insulating glue fat.
Disclosed in above-mentioned patent, capacitor cover plate is arranged in metal shell, and is supported by the projection on metal shell inwall, easily drops into the bottom of metal shell when applying larger external force, firm not, affect sealing, be welded and fixed if adopted, processing and assembling inconvenience; Meanwhile, under the impact of being expanded with heat and contract with cold, the sealing effectiveness of sealing ring and metal shell is not good.
Summary of the invention
The problems referred to above that the utility model exists for existing technology, provide a kind of capacitor, technical problem to be solved in the utility model is: how to improve the sealing of capacitor thus prevent fluid from penetrating in capacitor.
The purpose of this utility model realizes by following technical proposal:
A kind of capacitor, comprise the tubular shell that one end is closed, the other end has opening, capacitor core is provided with in described housing, described capacitor core periphery is enclosed with dielectric, it is characterized in that, the opening part of described housing is provided with the end cap for closing described opening, and the edge of described end cap has crimping one and described crimping one is positioned at the outside of described housing, is provided with the seal of annular slice between described crimping one and described housing; Described capacitor core is connected with the wire stretched out through end cap outside described housing, the side of described end cap has the groove to enclosure interior depression, is filled with sealing resin in described groove.
Its principle is as follows: the housing of the capacitor in the technical program is tubular with the end, mainly carry out the sealing of housing upper end open to ensure that foreign matter enters in housing, carry out the opening of closure casing by arranging end cap in the technical program, the edge of end cap is provided with crimping one, this crimping one reach housing outside and to the bottom direction turnup of housing, middle part and the crimping one of such end cap form draw-in groove, the end, upper end of housing is made to be fastened in this draw-in groove, can play a supporting role by opposite end lid again in the end, upper end of housing, housing contacts with end cap and defines hermetically-sealed construction, seal is set between crimping one and housing simultaneously, further enhanced leaktightness effect, prevent foreign matter from entering in housing from the edge of end cap.Because the wire on capacitor core needs to pass from end cap, in order to ensure sealing, groove to enclosure interior depression is set in the side of end cap, and the resin that is filled with a sealing in this groove, thus the gap that effective shutoff wire stays when end cap passes, the technical program ensure that the fastness that end cap connects and stability, and improves the sealing of capacitor further.
In technique scheme, seal can be the fluid sealant of coating, also can be sealing ring or gasket seal.
This capacitor is commonly used in fluid environment, if fluid is immersed in the housing of capacitor, damage can be caused to capacitor core, thus affect the life-span of capacitor, in the technical program, capacitor can effectively avoid fluid to enter enclosure interior from the end of housing or sidepiece, substantially prolongs the useful life of capacitor in fluid environment.
In above-mentioned capacitor, the end edge of described housing has the crimping two of turnup laterally, described crimping one fits with described crimping two, the end of described crimping one and described crimping two is all resisted against on the lateral surface of described housing, and described seal is between described crimping one and crimping two.In the technical program, seal is the ring-type matched with the crimping one at end cap edge, can be fitted in the inner side of crimping one before assembly, and crimping one is when assembling with crimping two-phase, and both squeeze sealing members form good sealing effectiveness.Crimping one and the end of crimping two be all resisted against the lateral surface of housing also can be formed further together with peripheral hermetically-sealed construction, enhanced leaktightness effect.
In above-mentioned capacitor, described crimping two is all curved with described crimping one.Convenient for assembly like this, be assembled to by capacitor core after in housing, inject dielectric, the crimping two of housing and the crimping one of end cap fit, then carry out crimp by crimping machine, make crimping one and crimping two be connected and fixed to be formed and seal.Crimping two and crimping one are fitted closely, good sealing effect.
In above-mentioned capacitor, the sealing resin thickness of filling in described groove is identical with the degree of depth of described groove.Sealing resin has enough thickness to carry out isolated sealing, and plays firm effect to wire, and sealing resin also can not come off from groove simultaneously.
In above-mentioned capacitor, described wire comprises the inner lead and the outside lead for being connected with external circuitry that are connected with described capacitor core, described end cap offers through hole, the connector that can conduct electricity is provided with in described through hole, also be filled with sealing resin between described connector and described through hole hole wall, described inner lead and outside lead are electrically connected with described connector respectively.With soldering by inner lead and outside lead firm welding, or inner lead and outside lead are all welded on connector.First by connector as in through hole, between connector and the hole wall of through hole, inject sealing resin again, not only achieve the fixing of connector, also assures that the sealing that connector is connected with end cap, inner lead and outside lead are all connected on connector, ensure that energising is smooth and easy.
In above-mentioned capacitor, described connector is hollow rivet, and the end of described inner lead and the end of outside lead to be all plugged in described rivet and to weld mutually with described rivet.By inner lead and outside lead are plugged in rivet carry out welding ensure that stable connection, current stabilization while also improve the sealing of end cap through hole.
In above-mentioned capacitor, described end cap offers through hole, described wire is also filled with sealing resin in the gap through described through hole and described wire and described through hole hole wall.In order to easy to assembly, the through-hole aperture on usual end cap is larger than the diameter of wire, by the resin that is filled with a sealing between wire and through hole hole wall, improves stability and the fastness of wire, improves the sealing of end cap simultaneously.
In above-mentioned capacitor, described end cap and housing adopt identical metal material to make.Metal material is solid firm, and the deformation quantity expanded with heat and contract with cold is little, the Stability Analysis of Structures of whole capacitor, and end cap and housing adopt its coefficient of thermal expansion and contraction of identical metal material identical, and deformation difference is little, ensures sealing.
In above-mentioned capacitor, described dielectric and sealing resin are epoxy resin.Epoxy resin has that insulation property are high, structural strength is large and the advantage such as good seal performance; Also there is the good manufacturability such as good corrosion resistance, strong adhesion, normal-temperature operation, easy construction simultaneously, and moderate.Dielectric and sealing resin adopt identical material, and coefficient of thermal expansion and contraction is identical, and deformation difference is little, thus ensure sealing further.Silica gel and polyurethane resin etc. can also be adopted in the technical program to replace epoxy resin.
Compared with prior art, the utility model has the following advantages:
1, opposite end, end, the upper end lid by housing in the utility model is played a supporting role, simultaneously housing contacts with end cap formation hermetically-sealed construction, and seal is set between crimping one and housing, further enhanced leaktightness effect, effectively ensure that fastness, stability and sealing that end cap connects.
2, the utility model middle-end covers and is provided with groove, by the resin that is filled with a sealing in groove, thus the gap that effective shutoff wire stays when end cap passes, the sealing improving capacitor ensure that the fastness that wire connects and stability simultaneously.
3, in the utility model, end cap and housing adopt identical metal material to make, solid firm, and the deformation quantity expanded with heat and contract with cold is little, the Stability Analysis of Structures of whole capacitor, and end cap and housing adopt its coefficient of thermal expansion and contraction of identical metal material identical, deformation difference is little, ensures sealing.
4, after the capacitor in the utility model improves sealing, solve the problem of capacitor long period of soaking easy oil impregnate in fluid, this capacitor can ensure in oil temperature-4 DEG C ~ 85 DEG C oil-tight for a long time, ensure that the performance of capacitor enables to work for a long time in deep well pump, and this capacitor volume is little, capacity is large, and low price, cost performance is high.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this capacitor.
Fig. 2 is the partial enlargement structural representation in Fig. 1.
In figure, 1, housing; 11, opening; 12, crimping two; 2, capacitor core; 3, dielectric; 4, end cap; 41, crimping one; 42, groove; 43, through hole; 5, seal; 6, sealing resin; 7, wire; 71, inner lead; 72, outside lead; 8, connector.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one
As depicted in figs. 1 and 2, this capacitor comprises the tubular shell 1 that one end is closed, the other end has opening 11, capacitor core 2 is provided with in housing 1, capacitor core 2 periphery in housing 1 is enclosed with dielectric 3, opening 11 place of housing 1 is provided with end cap 4, the edge of end cap 4 has crimping 1 and crimping 1 is positioned at the outside of housing 1, is provided with seal 5 between crimping 1 and housing 1; End cap 4 offers through hole 43, capacitor core 2 is connected with through the through hole 43 on end cap 4 and the wire 7 stretched out outside housing 1, specifically, wire 7 comprises the inner lead 71 and the outside lead 72 for being connected with external circuitry that are connected with capacitor core 2, the connector 8 that can conduct electricity is provided with in through hole 43, be filled with sealing resin 6 between connector 8 and through hole 43 hole wall, inner lead 71 and outside lead 72 are electrically connected with connector 8 respectively.Further, connector 8 is hollow rivet, and the end of inner lead 71 and the end of outside lead 72 to be all plugged in rivet and to weld mutually with rivet.The side of end cap 4 has the groove 42 to housing 1 inner recess, is also filled with sealing resin 6 in groove 42, and sealing resin 6 thickness of filling in groove 42 is identical with the degree of depth of groove 42, because capacitor casing 1 is tubular with the end, sealing is the sealing mainly carrying out housing 1 upper end open 11, the opening 11 of end cap 4 closure casing 1 is set in the present embodiment, the edge of end cap 4 has been provided with crimping 1, this crimping 1 reach housing 1 outside and to the bottom direction turnup of housing 1, such end cap 4 forms draw-in groove with crimping 1, the end, upper end of housing 1 is made to be fastened in this draw-in groove, can play a supporting role to end cap 4 again in the end, upper end of housing 1, housing 1 contacts with end cap 4 formation hermetically-sealed construction, seal 5 is set between crimping 1 and housing 1 simultaneously, in the present embodiment, seal 5 is for being coated in the fluid sealant on crimping 1 madial wall, by seal 5 enhanced leaktightness effect further, prevent foreign matter from entering in housing 1 from the edge of end cap 4.Because wire 7 needs to pass from end cap 4, in order to ensure sealing, groove 42 to housing 1 inner recess is set in the side of end cap 4, and also sealing resin 6 is filled in this groove 42, thus the gap that effective shutoff wire 7 stays when end cap 4 passes, sealing resin 6 has enough thickness to carry out isolated sealing, also can avoid coming off out from groove 42 simultaneously, can also ensure stability and the fastness of wire 7.
As shown in Figure 1, the end edge of housing 1 has the crimping 2 12 of turnup laterally, crimping 1 and crimping 2 12 fit, the end of crimping 1 and crimping 2 12 is all resisted against on the lateral surface of housing 1, seal 5 is between crimping 1 and crimping 2 12, and crimping 2 12 is all curved with crimping 1.Be assembled to by capacitor core 2 after in housing 1, inject dielectric 3, the crimping 2 12 of housing 1 and the crimping 1 of end cap 4 fit, then carry out crimp, are connected and fixed and form sealing.Crimping 2 12 and crimping 1 are fitted closely, good sealing effect, in the present embodiment, seal 5 is the ring-type matched with the crimping 1 at end cap 4 edge, the inner side of crimping 1 can be fitted in before assembly, crimping 1 is when assembling with crimping 2 12 phase, and both form good sealing effectiveness by squeeze sealing member 5.Crimping 1 and the end of crimping 2 12 be all resisted against the lateral surface of housing 1 also can be formed further together with peripheral seal structure, enhanced leaktightness effect.
In the present embodiment, end cap 4 and housing 1 adopt identical metal material to make, dielectric 3 and sealing resin 6 are epoxy resin, metal material is solid firm, the deformation quantity expanded with heat and contract with cold is little, the Stability Analysis of Structures of whole capacitor, and end cap 4 and housing 1 adopt its coefficient of thermal expansion and contraction of identical metal material identical, deformation difference is little, ensures sealing; Epoxy resin has that insulation property are high, structural strength is large and the advantage such as good seal performance; Also there is the good manufacturability such as good corrosion resistance, strong adhesion, normal-temperature operation, easy construction simultaneously, and moderate, dielectric 3 and sealing resin 6 adopt identical material, and coefficient of thermal expansion and contraction is identical, deformation difference is little, thus ensures sealing further.
Embodiment two
The present embodiment is roughly the same with embodiment one, difference is, after end cap 4 offering through hole 43 in the present embodiment, wire 7 is directly through through hole 43, and be filled with a sealing in the gap between wire 7 and through hole 43 hole wall resin 6, ensure stability and the fastness of the connection of wire 7 while promoting end cap 4 sealing, and assemble convenient.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ 1 herein, housing; 11, opening; 12, crimping two; 2, capacitor core; 3, dielectric; 4, end cap; 41, crimping one; 42, groove; 43, through hole; 5, seal; 6, sealing resin; 7, wire; 71, inner lead; 72, outside lead; 8, connect first-class term, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (8)
1. a capacitor, comprise one end to close, the other end has the tubular shell (1) of opening (11), capacitor core (2) is provided with in described housing (1), described capacitor core (2) periphery is enclosed with dielectric (3), it is characterized in that, opening (11) place of described housing (1) is provided with the end cap (4) for closing described opening (11), the edge of described end cap (4) has crimping one (41) and described crimping one (41) is positioned at the outside of described housing (1), the sheet packing (5) of annular is provided with between described crimping one (41) and described housing (1), described capacitor core (2) is connected with and stretches out described housing (1) wire outward (7) through end cap (4), the side of described end cap (4) has the groove (42) to housing (1) inner recess, is filled with sealing resin (6) in described groove (42).
2. capacitor according to claim 1, it is characterized in that, the end edge of described housing (1) has the crimping two (12) of turnup laterally, described crimping one (41) fits with described crimping two (12), the end of described crimping one (41) and described crimping two (12) is all resisted against on the lateral surface of described housing (1), and described seal (5) is positioned between described crimping one (41) and crimping two (12).
3. capacitor according to claim 2, is characterized in that, described crimping two (12) is all curved with described crimping one (41).
4. the capacitor according to claim 1 or 2 or 3, it is characterized in that, described wire (7) comprises the inner lead (71) and the outside lead (72) for being connected with external circuitry that are connected with described capacitor core (2), described end cap (4) offers through hole (43), the connector (8) that can conduct electricity is provided with in described through hole (43), also sealing resin (6) is filled with between described connector (8) and described through hole (43) hole wall, described inner lead (71) and outside lead (72) are electrically connected with described connector (8) respectively.
5. capacitor according to claim 4, it is characterized in that, described connector (8) is hollow rivet, and end and the end of outside lead (72) of described inner lead (71) to be all plugged in described rivet and to weld mutually with described rivet.
6. the capacitor according to claim 1 or 2 or 3, it is characterized in that, described end cap (4) offers through hole (43), described wire (7) is also filled with sealing resin (6) in the gap through described through hole (43) and described wire (7) and described through hole (43) hole wall.
7. the capacitor according to claim 1 or 2 or 3, is characterized in that, described end cap (4) and housing (1) adopt identical metal material to make.
8. capacitor according to claim 7, is characterized in that, described dielectric (3) and sealing resin (6) are epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520834282.5U CN205159100U (en) | 2015-10-23 | 2015-10-23 | Capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520834282.5U CN205159100U (en) | 2015-10-23 | 2015-10-23 | Capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205159100U true CN205159100U (en) | 2016-04-13 |
Family
ID=55694765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520834282.5U Expired - Fee Related CN205159100U (en) | 2015-10-23 | 2015-10-23 | Capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205159100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648910A (en) * | 2018-05-31 | 2018-10-12 | 安徽铜峰电子股份有限公司 | The lightness capacitor and its installation method of good heat dissipation |
| CN109192504A (en) * | 2018-08-13 | 2019-01-11 | 江门市德佑金属材料实业有限公司 | A kind of capacitor protector with flange |
-
2015
- 2015-10-23 CN CN201520834282.5U patent/CN205159100U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648910A (en) * | 2018-05-31 | 2018-10-12 | 安徽铜峰电子股份有限公司 | The lightness capacitor and its installation method of good heat dissipation |
| CN108648910B (en) * | 2018-05-31 | 2023-09-05 | 安徽铜峰电子股份有限公司 | Light capacitor with good heat dissipation and mounting method thereof |
| CN109192504A (en) * | 2018-08-13 | 2019-01-11 | 江门市德佑金属材料实业有限公司 | A kind of capacitor protector with flange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20171023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |