JPH0227554Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a capacitor that is coaxially wound to form a plurality of capacitor elements.

Generally, when forming multiple capacitor elements by stacking and coaxially winding two metallized films each having a vapor-deposited electrode, a part of the vapor-deposited electrode is scattered or the metallized film is cut, etc. The metallized film is insulated and wound with an insulating separator wider than the metallized film interposed therebetween.

Conventionally, as shown in FIG. 1 or 2, a capacitor as described above is manufactured by scattering part of the vapor-deposited electrodes 1a, 2a of the metallized films 1, 2, so that the vapor-deposited electrodes 1a are separated from the core side and the outer peripheral side. An insulating separator 3 such as paper or plastic film, which is wider than the metallized films 1 and 2, is interposed between the divided evaporation electrodes G, and coaxially wound with the other metallized film 2 to form a plurality of capacitors. An element 4 was formed, and metallicon metal 5 was attached to the end face of the element 4, as shown in FIG. 3. 1b and 2b are plastic films. As a result, the metallicon metal 5 adheres to the ends of the insulating separator 3, so that the metallicon metal 5 adhering to the insulating separator 3 may be scraped off or the protruding portions of the insulating separator 3
The metallicon metal 5 was mechanically removed by cutting a for one or two rotations to insulate the capacitor element on the core side and the capacitor element on the outer circumference, but this method requires a lot of man-hours and is difficult to automate. metal 5
There were problems such as sparks occurring if metal powder remained in the removed area.

In order to solve the above-mentioned problem, the present invention is designed to move the capacitor element on the core side in the axial direction by pressing the end of the capacitor element on the core side after spraying metallicon metal. By widening the insulation distance between the element and the metallcon metal of the capacitor element on the outer circumferential side, and by interposing a spacer in the space created by moving the capacitor element, safety and metallization can be achieved by preventing the moved capacitor element from restoring. The purpose is to obtain a capacitor with high productivity by eliminating the need for removal work.

The present invention involves scattering a part of the metallized film evaporation electrode or cutting the metallized film to divide the evaporation electrode into a winding core side and an outer circumference side. In a capacitor, a plurality of capacitor elements are formed by winding them coaxially with an insulating separator interposed between them, metallicon metal is attached to the end face of the capacitor elements, electrodes are drawn out, and this is stored in a container and sealed. This capacitor includes a capacitor element on the core side or a capacitor element on the outer periphery side that has been moved a predetermined distance in the direction, and a spacer that is interposed in the space created by moving the capacitor element.

The present invention will be explained below with reference to an embodiment shown in FIGS. 4 to 7.

FIG. 4 is an explanatory diagram of the manufacturing process of a capacitor element. As shown in FIGS. 1, 2, and 3, metallcon metal 5 After uniformly adhering the capacitor element 4, as shown in FIG. Next, as shown in FIG. 4B, a columnar jig 7 smaller than the outer diameter of the capacitor element 4 on the core side is pressed from the upper part to remove the capacitor element 4 on the core side.
When the is moved in the axial direction with the insulating separator 3 as a boundary, slipping occurs on the surface of the interposed insulating separator 3 as shown in FIG. The metallcon metal 5 is separated, the insulation distance between them is widened, and the insulation distance H is widened by the distance moved, so there is little variation. Reference numeral 8 denotes an insulating part which is exposed due to slipping on the surface of the insulating separator 3, and is a part to which the metallicon metal 5 is not attached.

Next, a spacer 10 made of an insulating material or the like as shown in FIG.
The attachment surface and the external terminal 12 fixed to the lid 11 are connected by soldering, welding, etc. using the lead 13, and the container is placed in the container 14 and sealed to complete the product.
It goes without saying that the above-mentioned capacitor element 4 to be moved may be moved either on the core side or on the outer peripheral side.

Since the capacitor of the present invention is constructed as described above, there is no need to mechanically remove the metallicon metal 5 attached to the end face of the insulating separator 3 protruding from the end face of the capacitor element 4, and production can be extremely efficient. , automation becomes easier. There is no risk of metal powder remaining in the removed part of the metallicon metal 5, and since the spacer 10 is interposed even if vibration is applied from the outside, the moved capacitor element 4 will not return to its original position, and the insulation distance H will remain almost constant. This has the effect of providing an extremely safe capacitor.

Although the above embodiment has been described for the case of two capacitor elements 4, in the case of three or more capacitor elements 4, the insulating separator 3
The capacitor elements 4 can be insulated by moving the capacitor element 4 upward or downward, or upward and downward in the axial direction with the winding portion as a boundary.

As mentioned above, the capacitor of the present invention is extremely advantageous in terms of productivity and safety, and has great industrial and practical value.

[Brief explanation of the drawing]

Figures 1 and 2 are disassembled plan views of the main parts of a capacitor element, Figure 3A is a sectional view of the main parts in the manufacturing process of the capacitor element, B is a perspective view of the capacitor element in A, and Figure 4A and B are An explanatory diagram of the capacitor element in the manufacturing process of the present invention, Figure 5A is a sectional view of the main part of the capacitor element in the manufacturing process of the present invention, B is a perspective view of the capacitor element in Figure 6, and Figure 6 is the spacer according to the present invention. A is a perspective view of one embodiment, B is a sectional view of another embodiment, and FIG. 7 is a sectional view of one embodiment of the capacitor of the present invention. 1, 2: metallized film, 1a, 2a: vapor deposited electrode, 3: insulating separator, 4: capacitor element,
5: Metallicon metal, 9: Space, 10: Spacer, 14: Container.

Claims (1)

[Scope of utility model registration request] A part of the metallized film evaporation electrode is scattered or the metallized film is cut to divide the evaporation electrode into a winding core side and an outer peripheral side, and an insulating separator wider than the metallized film is placed between the divided evaporation electrodes. In a capacitor, a plurality of capacitor elements are formed by coaxially winding the capacitor elements, metallicon metal is attached to the end face of the capacitor elements, electrodes are drawn out, and this is housed in a container and sealed. A capacitor comprising a capacitor element on the core side or a capacitor element on the outer peripheral side that has been moved by a distance of , and a spacer that is interposed in the space created by moving the capacitor element.