CN109727776A - Capacitor case - Google Patents
Capacitor case Download PDFInfo
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- CN109727776A CN109727776A CN201811208445.3A CN201811208445A CN109727776A CN 109727776 A CN109727776 A CN 109727776A CN 201811208445 A CN201811208445 A CN 201811208445A CN 109727776 A CN109727776 A CN 109727776A
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- capacitor
- convex strip
- capacitor case
- strip portions
- tubular trunk
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- 239000003990 capacitor Substances 0.000 title claims abstract description 287
- 239000004411 aluminium Substances 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 28
- 238000004519 manufacturing process Methods 0.000 description 17
- 238000005096 rolling process Methods 0.000 description 13
- 230000002687 intercalation Effects 0.000 description 7
- 238000009830 intercalation Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 238000009966 trimming Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000008385 outer phase Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Extrusion Of Metal (AREA)
Abstract
By using capacitor case of the present invention, high mechanical strength and the good capacitor bank body of resistance to vibration can not only be obtained, it can also enough anti-convenient appearance detections and the printing in capacitor bank body surface face for carrying out capacitor bank body.Capacitor case 1 of the invention is a kind of for storing the capacitor case 1 of the bottomed cylindrical of aluminium electrolutic capacitor element characterized by comprising side is provided with the tubular trunk 10 of opening portion；And the bottom 20 being connected with tubular trunk 10, wherein the periphery wall 12 of tubular trunk 10 be substantially it is smooth, on the internal perisporium 13 of tubular trunk 10, at least provided with the convex strip portions 30 extended at three from bottom 20 to 11 side of opening portion.
Description
Technical field
The present invention relates to a kind of capacitor cases.
Background technique
In the past, (hereafter referred to collectively as " the circuit moulds such as printed base plate, the circuit module of the electronic components such as capacitor are installed
Block ") it is equipped in the Transport Machinery and electronic equipments such as vehicle, aircraft, ship extensively.
In recent years, the setting place of circuit module is gradually diversified.For example, with the sensor network of Transport Machinery,
And the development of IoT (Internet Of Things (Internet of Things)), for specifically sharing the circuit modules of these functions also just
It more requires to be arranged under more and more harsh environment.For example, circuit module has started gradually to be arranged on four-wheel automobile
Engine chamber nearby (i.e. so-called ECU (Electronic Control Unit)).
Therefore, for the electronic components such as capacitor, it is desirable to be able to bear than in the past more harsh environmental condition (vibration
It moves).For example, it is desired to provide a kind of high mechanical strength and the good capacitor of resistance to vibration.
In order to cope with this demand, there is a kind of capacitor case to be suggested (for example, referring to patent document 1), it can
Storage capacitor element is to be fixed therein portion for capacitor element.
Fig. 8 is the figure for illustrating previous capacitor case 900.Wherein, Fig. 8 (a) is the strabismus of capacitor case 900
Figure.Fig. 8 (b) is the plan view of capacitor case 900.Fig. 8 (c) is that line A-A cuts capacitor case 900 along Fig. 8 (b)
Figure when being watched along A-A arrow after cutting.Fig. 8 (d) is the capacitor bank body 509 after being assembled using capacitor case 900
Oblique view.
Previous capacitor case 900 is such as one for storing capacitor element 200 shown in Fig. 8 (a)~Fig. 8 (d)
The bottomed cylindrical shell 900 of (such as aluminium electrolutic capacitor element 200a) comprising: side is provided with the cylinder of opening portion 911
Shape trunk 910；And the bottom 920 being connected with the other side of tubular trunk 910.Wherein, the inner circumferential of tubular trunk 910
The protrusion 930 (i.e. weldering pearl (Bead)) extended from bottom 920 to 911 side of opening portion is formed on wall 913.Shape trunk 910
Periphery wall 912 on be then formed with the recess portion 940 (referring to patent document 1 and 2) of corresponding raised part 930 (weldering pearl) shape.
Previous capacitor case 900 on the internal perisporium 913 of tubular trunk 910 due to being formed with (the weldering of protrusion 930
Pearl), therefore when capacitor element 200 enters 900 inside of capacitor case by intercalation, capacitor element 200 will with it is above-mentioned convex
930 phase of portion is chimeric to be fixed in inside capacitor case 900.So, by using previous capacitor case
900, it will be able to obtain high mechanical strength and the good capacitor bank body 509 of resistance to vibration (referring to Fig. 8 (d)).
[advanced technical literature]
No. 1558404 bulletin of [patent document 1] Design Registration
No. 1558405 bulletin of [patent document 2] Design Registration
However, previous capacitor case 900 is based on following reasons due to being formed with recess portion 940 on periphery wall 912
By there is outer when carrying out appearance detection to the capacitor bank body 509 after using capacitor case 900 to assemble
See this higher project of difficulty of detection.
According to common manufacturing process, 200 intercalation of capacitor element is being entered into capacitor case 900 and is obtaining capacitor group
After zoarium 509, it will usually carry out the process for wrapping up the outer end face of capacitor bank body 509 using protection pipes such as heat-shrink tubes.
Due to being formed with recess portion 940 on the periphery wall 912 of previous capacitor case 900, the electricity after being wrapped up by protection pipe
Also it will appear the recess portion (not shown) for following above-mentioned 940 shape of recess portion on the surface of container combination body 509 ' (not shown).
Therefore, when detecting when being recessed in appearance of capacitor bank body 509 ' (not shown), just can not directly sentence
Not Chu this to be recessed into bottom be the recess (being regarded as qualified product) following above-mentioned 940 shape of recess portion and being formed, or cause because of external force
Deformed recess (being regarded as substandard products).So, it is desirable to further the recess detected be differentiated and exactly needed additionally
Implement the special procedure differentiated for the concrete condition to recess again.
Like this, it is deposited according to previous capacitor case 900 due to being formed with recess portion 940 on periphery wall 912
In the project for causing appearance detection difficulty to rise.
Further more, because would generally be by multiple information (model of capacitor, electrostatic on 509/509 ' surface of capacitor bank body
Capacity, polarity etc.) it is printed, but due to being formed with recess portion 940 on the periphery wall 912 of previous capacitor case 900,
There is also have to be difficult to carry out the project of above-mentioned printing on the position of the corresponding recess portion 940.
Therefore, in view of these above-mentioned projects, the object of the present invention is to provide a kind of capacitor cases, by using the present invention
The capacitor case being related to can not only obtain high mechanical strength and the good capacitor bank body of resistance to vibration, it can also enough
The anti-convenient appearance detection and the printing in capacitor bank body surface face for carrying out capacitor bank body.
Summary of the invention
Capacitor case of the invention is a kind of for storing the capacitor of the bottomed cylindrical of aluminium electrolutic capacitor element
Shell characterized by comprising side is provided with the tubular trunk of opening portion；And it is connected with the tubular trunk
Bottom, wherein the periphery wall of the tubular trunk be substantially it is smooth, on the internal perisporium of the tubular trunk,
At least provided with the convex strip portions extended at three from the bottom to the opening portion side.
In capacitor case of the invention, it is also desirable to: where institute is being faced with parallel with the bottom
It states the part in tubular trunk comprising the convex strip portions to be cut, and the center on the diameter direction of the tubular trunk
Axis come when watching the face after the cutting, at described three more than the convex strip portions centered on the central axis mutually equiangularly
Interval configuration.
In capacitor case of the invention, it is also desirable to: where the convex strip portions are with the inner bottom surface of the bottom
Extend for starting point to the opening portion side, and terminates the specified position between the inner bottom surface and the opening portion
On.
In capacitor case of the invention, it is also desirable to: where institute is being faced with parallel with the bottom
It states the part in tubular trunk comprising the convex strip portions to be cut, and the center on the diameter direction of the tubular trunk
Axis come when watching the face after the cutting, at connection described three more than the inner circumferential diameter of a circle at the respective top of the convex strip portions compare this
The periphery diameter of a circle for the aluminium electrolutic capacitor element stored in capacitor case is small.
In capacitor case of the invention, it is also desirable to: where institute is being faced with parallel with the bottom
It states the part in tubular trunk comprising the convex strip portions to be cut, and the center on the diameter direction of the tubular trunk
Axis is come the semi-cylindrical that when watching the face after the cutting, the convex strip portions are opened in arc to outside the central axis.
In capacitor case of the invention, it is also desirable to: where institute is being faced with parallel with the bottom
It states the part in tubular trunk comprising the convex strip portions to be cut, and the center on the diameter direction of the tubular trunk
Axis is come when watching the face after the cutting, the shape at the top of the convex strip portions are as follows: with the aluminium stored in the capacitor case
The periphery circle of electrolytic capacitor element is the shape of the relationship of concentric circles.
In capacitor case of the invention, it is also desirable to: where with the diameter side comprising the tubular trunk
When being cut in face of the tubular trunk of the top of upward central axis and the convex strip portions, the convex strip portions tool
Have: straight line portion extends on the specified position between the inner bottom surface and the opening portion from the inner bottom surface of the bottom, and with
The internal perisporium or the periphery wall of the tubular trunk are parallel；And tapered portion, it is connected with the straight line portion, and
With close to the opening portion side and gradually to inclination on the outside of the diameter direction of the tubular trunk.
In capacitor case of the invention, it is also desirable to: where the capacitor case by punch forming come
It constitutes, the punch forming has the formed punch (Punch) of recess portion, the shape of the convex strip portions using the periphery near front end
Imitate the shape of the recess portion of the formed punch.
Invention effect
Capacitor case according to the present invention, due on the internal perisporium of tubular trunk, at least provided at three the bottom of from
The convex strip portions that portion extends to opening portion side.Therefore when capacitor element (such as aluminium electrolutic capacitor element, hereinafter referred to as
" capacitor element ") when being entered inside capacitor case by intercalation, at above-mentioned three more than convex strip portions will be with capacitor element
Outer phase is chimeric.So, capacitor element has just been stably fixed the inside of capacitor case.Therefore, by making
With capacitor case of the invention, it will be able to obtain high mechanical strength and the good capacitor bank body of resistance to vibration.
In addition, since the periphery wall of tubular trunk is substantially smooth, use capacitor case of the invention
Capacitor bank body after being assembled, surface are not in big recess.So, it is assumed that when capacitor bank body because
When external force causes to form recess after deforming, also such recess can be detected easily by appearance detection.Also, it can also
Implement to print with multiple information in capacitor bank body surface face easily.
In conclusion high mechanical strength and resistance to vibration can not only be obtained by using capacitor case of the present invention
Property good capacitor bank body, it can also enough anti-convenient appearance detections for carrying out capacitor bank body and capacitor
The printing on assembly surface.
Detailed description of the invention
Fig. 1 is the figure for illustrating capacitor case 1 that embodiment one is related to.
Fig. 2 is the figure for illustrating capacitor case 1 that embodiment one is related to.
Fig. 3 is the figure for illustrating capacitor case 1 that embodiment one is related to.
Fig. 4 is the capacitor bank body 500 after the capacitor case 1 for illustrating to be related to using embodiment one is assembled
Figure.
Fig. 5 is the figure for illustrating capacitor case 2 that embodiment two is related to.
Fig. 6 is the flow chart for illustrating the manufacturing method of capacitor case that embodiment three is related to.
Fig. 7 is the figure for illustrating capacitor case 3~5 that variation one to three is related to.
Fig. 8 is the figure for illustrating previous capacitor case 900.
Specific embodiment
Hereinafter, by being illustrated referring to each form shown in the drawings to capacitor case of the invention.In addition, each attached drawing
Only ideograph, and loosely reflect actual size.
[embodiment one]
1. the composition for the capacitor case 1 that embodiment one is related to
(1) basic to constitute
Capacitor case 1 is the capacitor case for storing the bottomed cylindrical of aluminium electrolutic capacitor element.
Fig. 1 is the figure for illustrating capacitor case 1 that embodiment one is related to.Wherein, Fig. 1 (a) is to make opening portion 11
Oblique view after watching capacitor case 1 above attached drawing and from oblique upper.Fig. 1 (b) is comprising tubular trunk 10
Diameter direction (direction r) on central axis AX1 and convex strip portions 30 top 35 plane PL1 (referring to Fig.1 (a)) to capacitor
After shell 1 is cut, the sectional view of the capacitor case 1 when watching the cut surface along the direction perpendicular to plane PL1.
Capacitor case 1 is such as shown in Fig. 1 (a) and Fig. 1 (b), comprising: side (upside in figure) is provided with opening portion
11 tubular trunk 10；And the bottom 20 being connected with the other side (downside in figure) of tubular trunk 10.
The periphery wall 12 of tubular trunk 10 is substantially smooth.
On the internal perisporium 13 of tubular trunk 10, at least provided with what is extended at three from bottom 20 to 11 side of opening portion
Convex strip portions 30.
In the example of 1 (a)~Fig. 1 (b), it is provided with convex strip portions 30 at six.
Here " convex strip portions " refer to that from other parts, (internal perisporium 13 of tubular trunk 10) is prominent to central axis AX1
Out, and the position that extends to length direction (direction parallel with central axis AX1) of the part outstanding.
Tubular trunk 10 and bottom 20 can be integrally formed by same material (such as material containing aluminium).
(2) length direction about convex strip portions 30
Convex strip portions 30 in embodiment one are extended for starting point to 11 side of opening portion with the inner bottom surface 21 of bottom 20, and
And it terminates on the specified position between inner bottom surface 21 and opening portion 11 (position shown in terminal 34 in Fig. 1 (b)).Material tubular body
Convex strip portions 30 are nearby then not formed in opening portion 11 on the internal perisporium 13 of cadre 10.
Tubular trunk 10 has on the basis of the inner bottom surface 21 of bottom 20 length until the end of 11 side of opening portion
Size L on directionC.On the other hand, convex strip portions 30 then have from bottom 20 up on the length direction of 11 side of opening portion
Size LL(referring to Fig.1 (b)).
Usually, L can be metLLTLCRelationship.Such as meet LL< (LC/ 2) relationship is then more ideal.
Convex strip portions 30 have straight line portion 31 and tapered portion 32.
Straight line portion 31 extended to from the inner bottom surface 21 of bottom 20 towards 34 side of terminal the inner bottom surface 21 and opening portion 11 it
Between specified position on, and it is parallel with the internal perisporium of tubular trunk 10 13 or periphery wall 12.Here, symbol L will be usedS
Length on the expression direction parallel with the internal perisporium 13 of straight line portion 31.
Tapered portion 32 is connected with straight line portion 31, and with close to 11 side of opening portion and gradually to tubular trunk 10
Inclination on the outside of diameter direction (direction r).Here, symbol L will be usedTOn the expression direction parallel with the internal perisporium 13 of straight line portion 31
Length (referring to Fig.1 (b)).
L would generally be metT< LSRelationship.Such as meet LT< (LS/ 4) relationship is then more ideal.Due to by by straight line
The length L in portion 31SBe arranged it is relatively long if, what the length mutually chimeric with capacitor element also will be opposite is elongated, therefore
Fixed capacitor element can more firmly be carried out.
(3) section about convex strip portions 30
Fig. 2 is the figure for illustrating capacitor case 1 that embodiment one is related to.Wherein, Fig. 2 (a) be with bottom
It is cut (to line A-A arrow area in Fig. 1 (b) the 20 parallel parts in tubular trunk 10 comprising convex strip portions 30
Cut in domain), and the central axis AX1 on the diameter direction of tubular trunk 10 (direction r) is come when watching the face after the cutting
Sectional view.The front elevation for the capacitor case 1 that Fig. 2 (b) embodiment one is related to.
Convex strip portions 30 are such as shown in Fig. 2 (a), and mutually equiangularly interval configures centered on central axis AX1.In Fig. 2 (a)
Shown in capacitor case 1 example in, convex strip portions 30 are arranged on six positions, also, a convex strip portions 30 with it is adjacent
Other convex strip portions 30 between mutually configured centered on central axis AX1 with 60 ° (1~θ of θ 6) of interval.
In the example of capacitor case 1 shown in Fig. 2 (a), convex strip portions 30 are in the semicolumn that arc is opened to outside central axis AX1
Shape.
In addition, the nearest position of the distance of distance center axis AX1 in above-mentioned arc is known as " top " of convex strip portions (in Fig. 2
(a) it is indicated in top 35).
In the capacitor case 1 that embodiment one is related to, each convex strip portions 30 are formed: the convex strip portions 30 more than at three
Top 35 be configured on imaginary circle centered on central axis AX1 circumference on.What these were configured circumferentially three sentences
On top 35 by mutually chimeric with the outer peripheral surface of cylindric capacitor element to carry out fixed capacitor element.
(4) appearance of capacitor case 1
As shown in Fig. 2 (b), the periphery wall 12 of tubular trunk 10 is substantially smooth.In other words, in tubular trunk
On 10 periphery wall 12, substantial segment difference or/and substantial bumps are not formed.
(5) size relationship between convex strip portions 30 and aluminium electrolutic capacitor element 200a
Fig. 3 is the figure for illustrating capacitor case 1 that embodiment one is related to.Aluminium electrolutic capacitor is illustrated in Fig. 3
Element 200a is entered the appearance when inside of capacitor case 1 by intercalation.Symbol 300 indicates seal body in figure, and which constitute aftermentioned
A part of capacitor bank body 500.
It is cut with the part in face of tubular trunk 10 in comprising convex strip portions 30 parallel with bottom 20, and edge
Central axis AX1 on the diameter direction (direction r) of tubular trunk 10 is come when watching the face after the cutting, capacitor case 1 is by structure
Become: the diameter θ A of the inner circumferential circle (imaginary inner circumferential circle) at the respective top 35 of convex strip portions 30 more than at connection three is than the capacitor
The periphery diameter of a circle θ B of the aluminium electrolutic capacitor element 200a stored in shell 1 is small.
2. the capacitor bank body 500 after the capacitor case 1 for having used embodiment one to be related to
Fig. 4 is the capacitor bank body 500 after the capacitor case 1 for illustrating to be related to using embodiment one is assembled
Figure.Wherein, Fig. 4 (a) is the oblique view after watching capacitor bank body 500 from 20 side of bottom.Fig. 4 (b) is comprising tubular
The plane of central axis AX1 and convex strip portions 30 on the diameter direction of trunk 10 cuts the section after capacitor bank body 500
Figure.
Such as Fig. 4 (a) and Fig. 4 (b) of capacitor bank body 500 is shown, Ke Yiyou: outside the capacitor that embodiment one is related to
Shell 1, capacitor element 200 and seal body 300 are constituted.
In embodiment 1, aluminium electrolutic capacitor element 200a constitutes capacitor element 200.Aluminium electrolutic capacitor element
200a is, for example, general capacitor element, includes the electrode foil for being connected to the side of terminal 202 of a side and connection
The electrode foil of another party of the terminal 202 of another party, the electrode foil of a side and the electrode foil of another party be inserted into separator one by one
Mode be wound (the illustration is omitted).
Seal body 300 is pressed near the opening portion 11 of capacitor case 1, and is entering capacitor case 1 to by intercalation
In capacitor element 200 while be packaged, the root of the terminal 202 of capacitor element 200 is assisted and is supported.
As shown in figure 3, capacitor element 200 is inserted into capacitor case 1 near bottom 20 from opening portion 11, such as
Shown in Fig. 4, by being fitted into capacitor element 200 in convex strip portions 30, it will be able to which capacitor element 200 is fixed on capacitor
In device shell 1.So, it will be able to obtain basic capacitor bank body 500.Alternatively, it is also possible to which seal body 300 is pressed into
Near opening portion 11.
3. the effect for the capacitor case 1 that embodiment one is related to
(1) capacitor case 1 that embodiment one is related to is a kind of for storing having for aluminium electrolutic capacitor element 200a
The capacitor case of round-ended cylinder shape comprising: side is provided with the tubular trunk 10 of opening portion 11；And with tubular trunk
The connected bottom 20 in the other side in portion 10.The periphery wall 12 of tubular trunk 10 is substantially smooth, also, in tubular trunk
On the internal perisporium 13 in portion 10, at least provided with the convex strip portions 30 extended at three from bottom 20 to 11 side of opening portion.
Due on the internal perisporium 13 of tubular trunk 10, at least provided with prolonging at three from bottom 20 to 11 side of opening portion
The convex strip portions 30 stretched.Therefore when capacitor element 200 enters 1 inside of capacitor case by intercalation, at above-mentioned three more than raised line
It portion 30 will be chimeric with the outer phase of capacitor element 200.So, capacitor element 200 is just stably fixed
The inside of capacitor case 1.Therefore, the capacitor case 1 being related to by using embodiment one, it will be able to obtain mechanical strength
The high and good capacitor bank body 500 of resistance to vibration.
In addition, the periphery wall 12 due to tubular trunk 10 is substantially smooth, it is related to using embodiment one
Capacitor case 1 assembled after capacitor bank body 500, surface is not in big recess.So, it is assumed that
When forming recess after capacitor bank body 500 leads to deformation because of external force, it can also be detected easily by appearance detection
Such recess.
In addition it is possible to implement to print with multiple information in capacitor bank body surface face easily.And it not only can be straight
It connects and capacitor case 1 is printed, can also be printed again after being wrapped up using protection pipe capacitor case 1.
In conclusion the capacitor case 1 being related to by using embodiment one, can not only obtain high mechanical strength and
The good capacitor bank body 500 of resistance to vibration, it can also enough anti-convenient appearance detections for carrying out capacitor bank body, with
And the printing in capacitor bank body surface face.
(2) in the capacitor case 1 that embodiment one is related to, tubular trunk is being faced with parallel with bottom 20
Part in 10 comprising convex strip portions 30 is cut, and the central axis AX1 on the diameter direction of tubular trunk 10 (direction r) comes
When face after watching the cutting, at three more than convex strip portions 30 mutually equiangularly interval configures centered on central axis AX1.
Due to the mutually equiangularly interval configuration of convex strip portions 30 more than at three, it is inserted into capacitor element 200
To capacitor case 1 inside and convex strip portions 30 chimeric with the outer phase of capacitor element 200 when, it will be able to make outside capacitor
Dispersed to the stress equilibrium that shell 1 applies to capacitor element 200.Moreover, will not also generate loosening.So, energy
Enough obtain the more good capacitor bank body 500 of resistance to vibration.
(3) in the capacitor case 1 that embodiment one is related to, convex strip portions 30 are starting point with the inner bottom surface 21 of bottom 20
Extend to 11 side of opening portion, and terminates on the specified position between inner bottom surface 21 and opening portion 11 (with end in Fig. 1 (b)
34 are held to indicate).
That is, convex strip portions 30 are not formed near opening portion 11, therefore the internal diameter near opening portion 11 (is omitted
Diagram) it is just bigger than being formed with the internal diameter Φ A of 20 side of bottom of convex strip portions 30.So, just become one kind to be convenient for
The capacitor case 1 that capacitor element 200 is inserted into.
(4) in the capacitor case 1 that embodiment one is related to, tubular trunk is being faced with parallel with bottom 20
Part in 10 comprising convex strip portions 30 is cut, and the central axis AX1 on the diameter direction of tubular trunk 10 (direction r) comes
When face after watching the cutting, at connection three more than the respective top 35 of convex strip portions 30 inner circumferential diameter of a circle θ A than the capacitor
The periphery diameter of a circle θ B of the aluminium electrolutic capacitor element 200a stored in shell 1 is small.
Due to using this structure, the capacitor case 1 and the periphery of capacitor element 200 centered on convex strip portions 30 are attached
It will be mutually fitted by flexible deformation between close.So, capacitor element 200 will be more firmly secured to
On capacitor case 1, to obtain the more good capacitor bank body 500 of resistance to vibration.
(5) in the capacitor case 1 that embodiment one is related to, tubular trunk is being faced with parallel with bottom 20
Part in 10 comprising convex strip portions 30 is cut, and the central axis AX1 on the diameter direction of tubular trunk 10 (direction r) comes
When face after watching the cutting, semi-cylindrical of the convex strip portions 30 in arc to outside central axis AX1.
Even more or less exist in the internal diameter of the outer diameter of capacitor element 200 and capacitor case 1
In the case where having foozle, since the convex strip portions 30 of embodiment one kind are in the semi-cylindrical that arc is opened to outside central axis AX1, because
This contact area changed between convex strip portions 30 and the periphery of capacitor element 200 that can be suitable on one side makes raised line on one side
Portion 30 and the periphery of capacitor element 200 are mutually chimeric.So, just become a kind of capacitor element 200 be fitted into it is soft
The high capacitor case 1 of softness.
(6) in the capacitor case 1 that embodiment one is related to, with the diameter direction (side r comprising tubular trunk 10
To) on central axis AX1 and convex strip portions 30 top 35 in face of tubular trunk 10 cut when, convex strip portions 30 have
Have: straight line portion 31 extends on the specified position between the inner bottom surface 21 and opening portion 11 from the inner bottom surface 21 of bottom 20, and
It is parallel with the internal perisporium 13 of tubular trunk 10 or periphery wall 12；And tapered portion 32, it is connected with straight line portion 31, and with
Close to 11 side of opening portion gradually to inclination on the outside of the diameter direction of tubular trunk 10 (direction r).
Due to using this structure, when capacitor element 200 is inserted into capacitor case 1, tapered portion 32 can
By the guidance of capacitor element 200 to the inside of capacitor case 1.That is, the capacitor case that embodiment one is related to is
A kind of capacitor case being inserted into convenient for capacitor element 200.In addition, the straight line portion 31 by convex strip portions 30 can also make raised line
It is more securely chimeric between portion 30 and the periphery of capacitor element 200.
[embodiment two]
Next, by being illustrated referring to Fig. 5 to the capacitor case 2 that embodiment two is related to.In embodiment two with
The identical constituent element of embodiment one will omit its description.
Fig. 5 is the figure for illustrating capacitor case 2 that embodiment two is related to.Wherein, Fig. 5 (a) be in Fig. 2 (a)
The corresponding figure of capacitor case 1 that embodiment one is related to, that is, be that tubular trunk is being faced with parallel with bottom 20
Part in 10 comprising convex strip portions 30 cut (, and the central axis AX1 on the diameter direction of tubular trunk 10 (direction r)
To watch the sectional view when face after the cutting.C1 is the imaginary circle being connected with the top 35a of convex strip portions 30a in figure, and C2 is exhibition
Show the imaginary circle of the periphery for the aluminium electrolutic capacitor element (the illustration is omitted) being accommodated in capacitor case 2.The circumference of C2 is slightly
Microbit is in the outside of C1 circumference.Fig. 5 (b) be with the central axis AX1 on the diameter direction (direction r) comprising tubular trunk 10 with
And after the plane of the top 35a of convex strip portions 30a cuts capacitor case 2, this is watched along the direction perpendicular to plane and is cut
The sectional view of capacitor case 2 when face.
The capacitor case 1 that the capacitor case 2 that embodiment two is related to substantially is related to embodiment one has same
The structure of sample, but in the capacitor case 1 for being structurally different from embodiment one and being related to of convex strip portions.
That is, such as Fig. 5 (a) of capacitor case 2 that embodiment two is related to is shown, cylinder is being faced with parallel with bottom 20
Part in shape trunk 10 comprising convex strip portions 30a is cut, and the central axis on the diameter direction of tubular trunk 10 comes
When face after watching the cutting, the shape of the top 35a of convex strip portions 30a are as follows: with the aluminium electroloysis electricity stored in the capacitor case 2
The periphery circle C2 of container component (diagram of omission) is the shape of the relationship of concentric circles.
In other words, the shape of the top 35a of convex strip portions 30a imitates the shape of the outer peripheral surface of the capacitor element for insertion
State.
The capacitor case 2 being related to according to embodiment two, the shape of the top 35a of convex strip portions 30a are as follows: with the capacitor
The periphery circle C2 for the aluminium electrolutic capacitor element stored in shell 2 is the shape of the relationship of concentric circles.Therefore, it will be able to fixation
Amount is to ensure the contact between convex strip portions 30a and the periphery of capacitor element (this refers to the aluminium electrolutic capacitor elements in figure)
Area.So, it will be able to more be firmly secured to capacitor element on capacitor case.
In addition, since the capacitor case 2 that embodiment two is related to relates to other than the composition of convex strip portions with embodiment one
And capacitor case 1 there is same structure, therefore also the same capacitor case 1 being related to embodiment one is had
Relevant effect.
[embodiment three]
Next, the manufacturing method for the capacitor case 1 being related to embodiment one is said as embodiment three
It is bright.
1. the manufacturing method of capacitor case 1
Fig. 6 is the flow chart for illustrating the manufacturing method of capacitor case that embodiment three is related to.
As shown in fig. 6, the manufacturing method for the capacitor case that embodiment three is related to is related to for manufacturing embodiment one
Capacitor case, successively include: cold burden (Slug) material place process S20；Punching press (Impact press) process S30；
Roll (Rolling) cold burden separation process S40；And trimming (Trimming) process S50.Alternatively, it is also possible to carry out cold burden
Before placing process S20, mold preparatory process S10 is first carried out.
Mold preparatory process S10 is prepared by formed punch and with the mould group for being fed recess portion 122 that can place cold burden
(Die) process of the mold constituted.The front end of the formed punch of the mold nearby has recess portion, which has and the electricity after manufacture
The corresponding shape of shape of the convex strip portions 30 of shell of tank 1 (the illustration is omitted).
It is the process for placing cold burden in the feed recess portion of mould group that cold burden, which places process S20, (the illustration is omitted).
Cold burden is to wrap metalliferous material.The metal materials such as aluminium can be used for example.
Stamping procedure S30 is to implement impact to the cold burden in the feed recess portion for being placed on mould group using above-mentioned formed punch, is passed through
To cold burden carry out rolling to make its by coincide formed punch form in a manner of come make cold burden shape after obtain rolling cold burden process
(the illustration is omitted).
That is, can be rolled along the shape of the feed recess portion of mould group after implementing to impact to cold burden by the cold burden impacted, and
And be rolled while following the shape of formed punch, finally it is configured to rolling cold burden (the illustration is omitted).
Rolling cold burden separation process S40 is that the rolling cold burden that will be shaped by stamping procedure S30 is separated from formed punch 10
Process (the illustration is omitted).
Specific separation method can be used in any way, for example, can use stripper (Stripper) come it is cold to rolling
Traction is implemented in the end of material, so that rolling cold burden is separated (the illustration is omitted) from formed punch 10.
Trimming process S50 is the opening portion side deletion that will roll cold burden, and rolling cold burden is formed as advising the size of length
Process (the illustration is omitted).For example, can be cut or be cut on defined cutting part, so that cold burden shape will be rolled
Size as rule length (the illustration is omitted).
As above process S20~trimming process S50 is placed by once implementing cold burden, it will be able to obtain embodiment one
The capacitor case 1 being related to.
In addition, in the capacitor case 1 that embodiment one is related to, since capacitor case 1 is by using in front end
Neighbouring periphery is had the formed punch of recess portion and is constituted using stamping (stamping procedure S30), therefore convex strip portions 30
Shape is to imitate the shape of the recess portion of formed punch.
2. the effect of the manufacturing method of capacitor case 1
Previous general shell is usually utilized in loading piece of metal plate (blank (Blank)) between lower die and upper mold,
And periodically carry out punching press, i.e., (the illustration is omitted) is manufactured by so-called " deep-draw ".But since deep-draw is the stage
Punching press is carried out to property, therefore just needs to prepare many molds, and the quantity of process is also relatively more.In addition, due in order not to making
There is slight crack and is just necessary to ensure that the punching press for carrying out enough time in metal plate, so also results in and extends the activity duration.It is based on
These reasons there is the project that manufacturing cost is got higher when by deep-draw to manufacture shell.
In addition, there is also have the position alignment between lower die (mold) and upper mold (formed punch) to compare when carrying out deep-draw
More difficult project.
(1) in the manufacturing method for the capacitor case 1 that embodiment three is related to, used formed punch, near front end
It with recess portion corresponding with the shape of convex strip portions 30, and include: to implement to the cold burden in the feed recess portion for being placed on mould group
Impact, cold burden is carried out rolling to make its by coincide formed punch in the form of by way of come make cold burden shape after obtain rolling it is cold
The stamping procedure S30 of material.
The lower die (mold) and upper mold (formed punch) for needing to prepare when carrying out stamping procedure S30 are substantially only a kind of
Type.Also, stamping procedure S30 can carry out rolling to cold burden by single-impact to obtain rolling cold burden.Therefore, root
It according to the manufacturing method for the capacitor case 1 being related in embodiment three, is manufactured compared to using deep-draw, can substantially shorten and add
Between working hour, the capacitor case 1 being related in embodiment one can be obtained by preparing less mold.
In addition, according to stamping procedure S30, due to the position alignment between lower die (mold) and upper mold (formed punch) without requiring
Excessively high precision, therefore for this point, it is manufactured compared to using deep-draw, also can more easily be obtained
The capacitor case 1 that embodiment one is related to.
(2) shell obtained by deep-draw, due to its bottom edge part (intersection between tubular trunk and bottom,
In other words, be exactly the corner of capacitor case bottom) thickness can cause to be extended because of punching press, therefore compared to other positions
For thickness can be thinning.
In contrast, the manufacturing method for the capacitor case 1 being related to according to embodiment three, passes through stamping procedure S30 shape
At the thickness of bottom and the thickness at other positions be identical or more thicken.
Thus, it is supposed that can also obtain bottom 20 in the case where even concentration at the edge part of bottom 20 when stress
Edge part do not allow the capacitor case 1 for being also easy to produce slight crack.
(3) in addition, previous capacitor case 900 (referring to Fig. 8) is sometimes shaped by deep-draw.That is, in cylinder
While forming protrusion 930 (namely weldering pearl) on the internal perisporium 913 of shape trunk 910, also it will form on periphery wall 912 imitative
Imitate the recess portion 940 of 930 shape of protrusion.In this case, due to the tubular trunk 10 near protrusion 930 and recess portion 940
Thickness is to be formed by deep-draw, therefore it is thinning to will lead to the thickness for other positions.
In contrast, according to the manufacturing method in embodiment three, since capacitor case 1 is by stamping procedure S30
Come what is formed, therefore the thickness between the top 35 of convex strip portions 30 and the periphery wall 12 of tubular trunk 10 is just than other positions
The thickness of (position of convex strip portions 30 is not formed in tubular trunk 10) is bigger.
So, when 200 intercalation of capacitor element is entered inside, even if by the work of stress near convex strip portions 30
With since convex strip portions 30 are nearby as above with relatively thick thickness to which rigidity is also relatively high, such that will
Capacitor element 200 is firmly fitted into.So, it will be able to obtain high mechanical strength and the good capacitor bank of resistance to vibration
Body.
In addition, though the above-mentioned manufacturing method for being the capacitor case 1 being related to embodiment one is as embodiment
Three are illustrated, but embodiment three is not limited to that.For example, the capacitor case 2 being related in manufacture embodiment two
When be equally applicable to embodiment three.
More than, according to above embodiment, the present invention is described, but the present invention is not limited in above-mentioned implementation
Mode.The present invention can implement various changes without departing from the spirit of the invention, for example, it may be following deformation.
(1) in the capacitor case 1~2 that embodiment one to three is related to, although the length of the straight line portion 31 of convex strip portions 30
The ratio of degree LS and the length LT of tapered portion 32 substantially 9:1 for example in Fig. 1 (b).But the present invention is not limited to this.
(variation one to three) can also suitably be changed to the ratio.
Fig. 7 is the figure for illustrating capacitor case 3~5 that variation one to three is related to.Wherein Fig. 7 (a) is in Yi Bao
The plane of the top 35b of central axis AX1 and convex strip portions 30 on the diameter direction of trunk containing tubular 10 are related to variation one
Capacitor case 3 cut after, the section of the capacitor case 3 when watching the cut surface along the direction perpendicular to plane
Figure.Fig. 7 (b) is the dotted line part enlarged drawing of Fig. 7 (a).Fig. 7 (c) is that the main portions for the capacitor case 4 that variation two is related to are cut
Face figure.Fig. 7 (d) is the main portions sectional view for the capacitor case 5 that variation three is related to.
The capacitor case 3 that variation one is related to such as Fig. 7 (a) and Fig. 7 (b) is shown, the length L of tapered portion 32TPhase
For the length L of straight line portion 31SRatio, it is bigger than ratio shown in Fig. 1 (b).
The capacitor case 4 that variation two is related to such as Fig. 7 (c) is shown, the length L of straight line portion 31SZero is infinitely close to,
And the length L of its tapered portion 32TLength L relative to straight line portion 31SRatio be set it is very big.Knot in this way
Structure, it will be able to capacitor element 200 is inserted into capacitor case 4 easily.
The capacitor case 5 that variation three is related to such as Fig. 7 (d) is shown, the length L of tapered portion 32TZero is infinitely close to,
And the length L of its tapered portion 32TLength L relative to straight line portion 31SRatio be set it is very small.Knot in this way
Structure, it will be able to largely ensure tapered portion 32 for the length chimeric with capacitor element 200, thus firmly by it
It is fixed in capacitor case 4.
(2) in the capacitor case 1 to 3 that embodiment one to three is related to, although with the shape of tubular trunk (with
The plane parallel with bottom cut after shape) it is generally of a perfect circle for be illustrated, but the present invention is not
It is only limitted to this.For example, tubular trunk may be oval (the illustration is omitted), or rectangle (containing square) etc.
Polygonal (the illustration is omitted).Can according to need be accommodated in internal capacitor element shape come to these above-mentioned shapes into
Row suitably changes.
(3) in the capacitor case 1 to 2 that embodiment one to three is related to, although in fig. 7, it is being set with convex strip portions
It is illustrated for being equipped at six, but the present invention is not limited to this.Such as (the illustration is omitted) is also can be set at three.
When being provided with convex strip portions 30 at three, although simplifying design, but still it can effectively carry out fixed capacitor element.
Alternatively, it is also possible to according to being provided with everywhere, the specification of convex strip portions (saves to constitute capacitor case at five or at eight
Diagram is omited).In this case, since capacitor element needs chimeric position (position being in contact) to become more, energy
It is enough that more firmly capacitor element is fixed.
Therefore, it is then more ideal that convex strip portions at six are provided with.Because when being provided at six, compared to being provided at three,
Mating position (the position quantity of support capacitor element) quantity of capacitor element just becomes more, can so divide
Stress is dissipated, to obtain high mechanical strength and the good capacitor bank body of resistance to vibration.
(4) in the capacitor case 1 that embodiment one is related to, although being to be in convex strip portions 30 as shown in Figures 1 to 4
It is illustrated for the semi-cylindrical (constituting circular circular arc) that arc is opened to outside central axis AX1.But it the present invention and not only limits
In this.
For example, the arc of convex strip portions can also be in the shape for constituting oval circular arc (the illustration is omitted).It can also be in outside arc
Open the structure that part is acute angle (that is, shape that corner is formed towards central axis AX1) (the illustration is omitted).
In addition, in Fig. 1 to Fig. 4, although the shape of convex strip portions 30 is formed: from the internal perisporium 13 of tubular trunk 10
Face directly constituted convex strip portions 30 so that arc-shaped is convex.But the present invention is not limited to this.For example, it is also possible to be formed
Are as follows: come after first forming convex mesa-shaped (rectangular portion) from the face of the internal perisporium 13 of tubular trunk 10 in formation arc-shaped upper convex portion
It constitutes convex strip portions 30 (the illustration is omitted).
Symbol description
1,2,3,4,5,900 ... capacitor case；10,910 ... tubular trunks；11,911 ... opening portions；12,912…
Periphery wall；13,913 ... internal perisporiums；20,920 ... bottoms；21 ... inner bottom surfaces；30,30a, 30b, 930 ... convex strip portions；31 ... straight lines
Portion；32 ... tapered portion；34 ... terminals；35, the top 35a, 35b ...；200 ... capacitor elements；200a ... aluminium electrolutic capacitor member
Part；202 ... terminals；300 ... seal bodies；500,509,509 ' ... capacitor bank body；940 ... (periphery wall) recess portions
Claims (8)
1. a kind of capacitor case, the capacitor case of the bottomed cylindrical for storing aluminium electrolutic capacitor element, feature
It is, comprising:
Side is provided with the tubular trunk of opening portion；And
The bottom being connected with the tubular trunk,
Wherein, the periphery wall of the tubular trunk is substantially smooth,
On the internal perisporium of the tubular trunk, at least provided with what is extended at three from the bottom to the opening portion side
Convex strip portions.
2. capacitor case according to claim 1, it is characterised in that:
Wherein, it is cut with the part in face of the tubular trunk in comprising the convex strip portions parallel with the bottom
It cuts, and the central axis on the diameter direction of the tubular trunk is come when watching the face after the cutting,
Mutually equiangularly interval configures the convex strip portions more than at described three centered on the central axis.
3. capacitor case according to claim 1 or 2, it is characterised in that:
Wherein, the convex strip portions extend using the inner bottom surface of the bottom as starting point to the opening portion side, and terminate
On specified position between the inner bottom surface and the opening portion.
4. capacitor case as claimed in any of claims 1 to 3, it is characterised in that:
Wherein, it is cut with the part in face of the tubular trunk in comprising the convex strip portions parallel with the bottom
It cuts, and the central axis on the diameter direction of the tubular trunk is come when watching the face after the cutting,
The inner circumferential diameter of a circle at the respective top of the convex strip portions more than at described three is connected than storing in the capacitor case
The periphery diameter of a circle of the aluminium electrolutic capacitor element is small.
5. capacitor case as claimed in any of claims 1 to 4, it is characterised in that:
Wherein, it is cut with the part in face of the tubular trunk in comprising the convex strip portions parallel with the bottom
It cuts, and the central axis on the diameter direction of the tubular trunk is come when watching the face after the cutting,
The semi-cylindrical that the convex strip portions are opened in arc to outside the central axis.
6. capacitor case as claimed in any of claims 1 to 4, it is characterised in that:
Wherein, it is cut with the part in face of the tubular trunk in comprising the convex strip portions parallel with the bottom
It cuts, and the central axis on the diameter direction of the tubular trunk is come when watching the face after the cutting,
The shape at the top of the convex strip portions are as follows: the periphery with the aluminium electrolutic capacitor element stored in the capacitor case
Circle is the shape of the relationship of concentric circles.
7. capacitor case as claimed in any of claims 1 to 6, it is characterised in that:
Wherein, institute is being faced with the top of central axis and the convex strip portions on the diameter direction comprising the tubular trunk
When stating tubular trunk and being cut,
The convex strip portions include
Straight line portion extends on the specified position between the inner bottom surface and the opening portion from the inner bottom surface of the bottom, and
It is parallel with the internal perisporium of the tubular trunk or the periphery wall；And
Tapered portion is connected with the straight line portion, and with close to the opening portion side and gradually to the tubular trunk
Diameter direction on the outside of inclination.
8. capacitor case as claimed in any of claims 1 to 7, it is characterised in that:
Wherein, the capacitor case is made up of punch forming, and the punch forming uses the periphery near front end
Formed punch with recess portion,
The shape of the convex strip portions imitates the shape of the recess portion of the formed punch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017208684A JP2019083236A (en) | 2017-10-28 | 2017-10-28 | Capacitor outer case |
| JP2017-208684 | 2017-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109727776A true CN109727776A (en) | 2019-05-07 |
| CN109727776B CN109727776B (en) | 2021-04-27 |
Family
ID=66295390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811208445.3A Active CN109727776B (en) | 2017-10-28 | 2018-10-17 | Capacitor shell |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019083236A (en) |
| CN (1) | CN109727776B (en) |
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| JPH1022177A (en) * | 1996-07-05 | 1998-01-23 | Hitachi Aic Inc | Capacitor in case |
| JP2000124086A (en) * | 1998-10-20 | 2000-04-28 | Nippon Chemicon Corp | Capacitor |
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| JP2008205074A (en) * | 2007-02-19 | 2008-09-04 | Matsushita Electric Ind Co Ltd | Film capacitor |
| CN202564062U (en) * | 2012-04-20 | 2012-11-28 | 宁波新容电器科技有限公司 | Capacitor assembly packaging outer shell |
| CN204230048U (en) * | 2014-10-31 | 2015-03-25 | 铜陵市胜美达电子制造有限公司 | The Novel capacitor outer casing that support force is strong |
| CN204303568U (en) * | 2014-11-19 | 2015-04-29 | 南通创佳机电有限公司 | Aluminium shell of capacitor |
| JP1558404S (en) * | 2015-12-21 | 2016-12-05 | ||
| CN205828159U (en) * | 2016-06-30 | 2016-12-21 | 佛山市正电电容器有限公司 | A kind of aluminium electrolutic capacitor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505848U (en) * | 1973-05-15 | 1975-01-22 | ||
| JPS6127231U (en) * | 1984-07-18 | 1986-02-18 | 日通工株式会社 | Case for electrolytic capacitors |
| JP6845495B2 (en) * | 2016-04-19 | 2021-03-17 | ニチコン株式会社 | Electronic components |
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2017
- 2017-10-28 JP JP2017208684A patent/JP2019083236A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1022177A (en) * | 1996-07-05 | 1998-01-23 | Hitachi Aic Inc | Capacitor in case |
| JP2000124086A (en) * | 1998-10-20 | 2000-04-28 | Nippon Chemicon Corp | Capacitor |
| CN2395374Y (en) * | 1999-11-05 | 2000-09-06 | 尤勇 | Super fine box type capacitor non-glued outer case |
| JP2008205074A (en) * | 2007-02-19 | 2008-09-04 | Matsushita Electric Ind Co Ltd | Film capacitor |
| CN202564062U (en) * | 2012-04-20 | 2012-11-28 | 宁波新容电器科技有限公司 | Capacitor assembly packaging outer shell |
| CN204230048U (en) * | 2014-10-31 | 2015-03-25 | 铜陵市胜美达电子制造有限公司 | The Novel capacitor outer casing that support force is strong |
| CN204303568U (en) * | 2014-11-19 | 2015-04-29 | 南通创佳机电有限公司 | Aluminium shell of capacitor |
| JP1558404S (en) * | 2015-12-21 | 2016-12-05 | ||
| CN205828159U (en) * | 2016-06-30 | 2016-12-21 | 佛山市正电电容器有限公司 | A kind of aluminium electrolutic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109727776B (en) | 2021-04-27 |
| JP2019083236A (en) | 2019-05-30 |
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