Package of electrolytic capacitors, with a folded terminal protection part

Electrolytic capacitors 14 having terminals 15, 16 on one base face and a fixing frame at the other end part are inserted in bags made of air-bubble plastic sheet of tubular shape whose one end is welded to form an end and further having a terminal-protection part 13 made by folding the end part of the bag and welded to the welded part 12, and the bags 11 containing the electrolytic capacitor 14 are compactly packed in a box 18 of corrugated cardboard in alternating direction and flaps 191, 191, 192, 192 are closed and sealed; the electrolytic capacitors 14 having delicate terminals 15, 16 are safely and compactly packed in the box 18, and the terminals 15, 16 and the bent part of the fixing frames 17, are safely isolated by the bag.

FIELD OF THE INVENTION AND RELATED ART STATEMENT 
1. Field of the Invention 
The present invention relates to an improvement in wrapping device for 
electrolytic capacitors, and particularly to the wrapping device wherein a 
plurality of electrolytic capacitors are contained safely and compactly 
for transportation, for instance, from manufacturing shop to assembly 
shop. 
2. Description of the Related Art 
FIG. 6, FIG. 6(a), FIG. 7 and FIG. 8 show a wrapping device for 
electrolytic capacitors of typical prior art. As shown in FIG. 6 through 
FIG. 8, the prior art device comprises a cardboard box 1 having flaps 5, 
partition member 2 configurated by several pieces of cardboard to be 
inserted in the box 1 and a cushion mat 4 to be inserted in the box 1 for 
protecting terminals of capacitor. 
In the above-mentioned conventional wrapping device for electrolytic 
capacitors, a plurality of the electrolytic capacitors 3 are inserted in 
partitioned spaces 21 in the partition members 2 with its end having the 
terminals 15, 16 upwards toward the side of opening. And thereafter, the 
terminal-protection member 4, for instance of foamed plastic board, 
corrugated cardboard or a foamed polyethylene cushion mat is placed on the 
partition member 2 to protect the terminals 15, 16 of the electrolytic 
capacitors 3,. Thereafter, the flaps 5, are folded on the 
terminal-protection member 4 to close the box, and finally, the flaps are 
sealed by adhesive tapes 6 as shown in FIG. 7. 
In the above-mentioned conventional wrapping device for electrolytic 
capacitors the partition member 2 which has to be assembled prior to 
packing the electrolytic capacitors 3, in the box 1 is necessary. Besides, 
isolation spaces 22 around the electrolytic capacitors 3 are required so 
as to insert respective electrolytic capacitors each having fixing frame 
17 their one end part and around the outside of the partition member 
assembly and inside wall of the cardboard box 1. And further, putting the 
thick terminal-protection member 4 in the box 1 is required. 
The above-mentioned wrapping device for electrolytic capacitors has the 
problem of not only space-taking but also time-taking in assembling the 
box 1 with the partition member 2 and necessitates careful packing the 
electrolytic capacitors in each partitioned space. And furthermore, the 
fixing frames 17 may scratch outside face of the adjacent electrolytic 
capacitors 3. 
OBJECT AND SUMMARY OF THE INVENTION 
The present invention purposes to provide an improved wrapping device for 
electrolytic capacitors in which no partition member to be preliminarily 
assembled and a thick terminal-protection member are required, and 
furthermore the device can pack the electrolytic capacitors more compact 
and more safely than in the prior art device. 
The wrapping device for electrolytic capacitors in accordance with the 
present invention comprises: 
a plurality of bags made of air-bubble plastic sheet, 
each bag being for containing one electrolytic capacitor, which is 
fundamentally of cylindrical shape and has terminals on one base face 
thereof, and shaped as a tube which has an opening at one end for 
inserting the electrolytic capacitor therethrough, a welded part at the 
other end closing the other end of the bag and a terminal-protection part 
which is disposed beyond the welded part for serving as a cushion member 
for the terminals of the electrolytic capacitor, and 
a cardboard box with lid flaps for fittingly containing the plurality of 
bags each with one electrolytic capacitor enclosed therein, and enclosing 
the plurality of bags and electrolytic capacitors by closing the lid 
flaps. 
The air-bubble plastic sheet is a transparent cushion sheet which is widely 
used as packing material for fragile articles and made of a pair of soft 
thin transparent plastic sheets confining a number of air bubbles between 
the two thin plastic sheet. 
By the above-mentioned configuration, the packing can be made with smaller 
working steps and smaller number and kinds of components, and therefore, 
work time and cost of the packing can be reduced. Furthermore, by using 
the bag 11 of air-bubble plastic sheet having recessed part inside the bag 
at the welded part, the terminals of the electrolytic capacitor is safely 
protected, and further the fixing frames are isolated from each other and 
from the terminals by alternate packing of the electrolytic capacitor in 
the corrugated cardboard box.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
FIG. 1(a), FIG. 1(b), FIG. 1(c), FIG. 2, FIG. 3 and FIG. 4 shows a first 
preferred embodiment. 
As shown in FIG. 1(a), FIG. 1(b) and FIG. 2, a bag 11 is made of a tubular 
shaped air-bubble plastic sheet having an inner diameter slightly larger 
than outer diameter of cylindrical part of an electrolytic capacitor 14 
and length suitable for containing the cylindrical part of the 
electrolytic capacitor 14 therein. One end of the air-bubble plastic sheet 
tube forms an opening 111, and at the other end there is provided a welded 
part 12 and further a terminal-protection part 13 at the part beyond the 
welded part 12. The terminal-protection part 13 is formed by, for 
instance, folding the end part which is beyond the welded part and then 
welding the folded end part on the welded part 12. 
As shown in FIG. 1(a), the electrolytic capacitor 14 is inserted in the bag 
11 in a manner that the end face having anode terminal 15 and cathode 
terminal 16 is at innermost part and a fixing frame 17 outermost, so that 
bent members 17a or flange is outside the opening 111. Thus, the 
electrolytic capacitor 14 is to be inserted so that the terminal 15, 16 
face the inside recess formed immediately inside the welded part 12. 
Thereafter the bags 11 each containing the electrolytic capacitor 14 are 
compactly inserted in a box 18 of corrugated cardboard with flaps 191, 
191, 192, 192. The directions of insertion of the bags 11 with the 
electrolytic capacitors 14 therein are in alternate order so that 
neighboring bags are directed with its terminal-protection part 13 
alternatingly inward and outward. Therefore the fixing frames 17, are 
arranged always adjacent to the terminal-protection part 13. 
Thereafter flaps 191, 191, 192, 192 are closed and the box is closed by 
known adhesive tapes 20 to seal the box 18. 
As a result of the above-mentioned configuration, there is no use of the 
hitherto used partition members which require preliminary assembling, and 
there is no redundant spaces around the outside face of the partition 
members and in each partitioned spaces. 
Furthermore, fragile anode terminals 15 and cathode terminals 16 are 
covered in recessed space inside the welded part 12 of the bag 11, and 
therefore there is no use of using the hitherto-used thick 
terminal-protection member (4 of FIG. 6), and therefore the space therefor 
is omitted. 
Furthermore by arranging the fixing frames 17, alternately inside and 
outside of the corrugated cardboard box 18, the fixing frames 17 touches 
and is held by the thick and soft terminal-protection part 13 only, and 
therefore the fixing frames 17, and the outside of the adjacent cans 14 
are not damaged by each other. As has been mentioned, by compact packing 
of the bags 11 each containing the electrolytic capacitor 14 in 
alternating directions, safe and compact packing of plural electrolytic 
capacitors is obtainable. 
FIG. 5 shows another example of the bag 11 wherein the terminal-protection 
part 13 is formed by providing two parallel welded parts 12 and 12' with a 
suitable distance therebetween, instead of folding the end part. This 
configuration of the terminal-protection part 13' also has a good cushion 
effect and sufficiently protect the anode terminal 15 and cathode terminal 
16, and is suitable for mass-production. 
Although the invention has been described in its preferred form with a 
certain degree of particularity, it is understood that the present 
disclosure of the preferred form has been changed in the details of 
construction and the combination and arrangement of parts may be resorted 
to without departing from the spirit and the scope of the invention as 
hereinafter claimed.