JP2519509Y2 - High voltage capacitors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a high-voltage capacitor such as a high-voltage feedthrough ceramic capacitor.

[Conventional technology]

The high voltage capacitor is used as a filter capacitor for a magnetron tube of a microwave oven.

Here, an example of a conventional high-voltage through-type porcelain capacitor is
When 18 views assembled vertical sectional view of the described original, porcelain dielectric 6 is a high pressure feedthrough ceramic capacitor having a front electrode 3, 4 and the back electrode 5 and the through hole 2, with a window ₇₁ against Main plate (chassis)
7, electrode fittings 8 and 9, connection tab body 1 as shown in FIG.
The central conductors 12 and 13 in which 0 and 11 are concentrically fixed by caulking, the silicone tubes 14 and 15, the insulating case 16 and the insulating cover 17 are provided.
5 is inserted and adhered to the central conductors 12 and 13, the insulating case 16 is inserted and fitted on the outer peripheral side of the ground plate 7, and the insulating cover 17 is inserted and fitted on the inner peripheral side. It was constructed by solidifying by 19.

[Problems to be solved by the device]

In such a capacitor, there is a strong demand for further miniaturization and cost reduction. This requirement is to reduce the distance between the center conductors 12 and 13 with the connecting tab bodies 10 and 11 by improving the performance of the porcelain dielectric 6. became.

However, as shown in the figure, the connection tab body 10 (11) is connected on the same axis as the central conductor 12 (13), and the tip end intervals of the connection tab bodies 10 and 11 are different from those of the conventional receptacle (outlet) insertion. Since the space between the holes is standardized and cannot be reduced, there is a problem that it is difficult to downsize the capacitor.

According to the present invention, the center conductor is positioned on one side of the connection tab bodies 10 and 11, and the connection tab body is eccentric with respect to the center conductor and fixed by caulking to widen the space between the insertion side tabs of the receptacle. The size of the capacitor is reduced by reducing the distance between the central conductors 12 and 13 by the amount of expansion.

[Means for solving the problem]

The present invention is a high voltage porcelain capacitor in which a silicone tube is attached to a central conductor with a tab inserted through a through hole of a porcelain dielectric, and the whole is integrally solidified with an insulating resin mold. A high-voltage capacitor characterized in that the central conductor is positioned at the lower end of the tab body, and the lower part of the tab body is caulked to one end of the central conductor to widen the interval between the tabs.

[Action]

In this capacitor, the spacing between the tabs on the insertion side of the connection tab into the receptacle is maintained at the required standard value, and since the center conductor is located on one side of the tab, the tab is eccentric with respect to the center conductor. Capacitor diameter can be reduced.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 5. The overall structure of this capacitor is substantially the same as that of the conventional example described above, and the connection tab body 10 (11) is expanded to the one side on the lower center. A protrusion 10 ₁ (11 ₁ ) is formed, and one end of the center conductor 12 (13) is caulked and fixed 21 in the protrusion 10 ₁ to form a center conductor with an eccentric tab. As shown in FIG. The capacitor is assembled by arranging the tabs of the central conductor with tabs so that the tabs are on the outside.

In this way, the distance D between the tip portions above the tabs is made equal to the distance between the insertion holes of the receptacles, and the central conductor is twice the distance l between the connecting tab body 10 and the central conductor 12.
The distance d between 12 and 13 is reduced, and the diameter of the parts such as the insulating case 16 and the insulating cover 17 are also reduced in response to the reduction to reduce the capacitor diameter. There is no difference from the conventional example shown in FIG.

That is, as shown in FIG. 1, the front electrodes 3 and 4 are provided on one surface of the porcelain dielectric 6 having the two through holes 1 and 2, and the back electrode 5 is provided on the opposite surface thereof. And these electrodes 3,4,
5 to correspond to the through hole 1 a hole provided, and a backing electrode 5 is bonded conductive ground plate 7 having an open window ₇₁ in the center, the center conductor with the connection tab body 10, 11 12, 13 are front electrodes 3,
4 through the electrode fittings 8, 9 are bonded conductive front electrode 3,4, porcelain dielectric 6, it is passed through in the order of the window ₇₁ of the back electrode 5 and the ground plate 7, the insulating and the center conductor 12, 13 Silicone tubes 14 and 15 for pressure resistance are inserted and adhered. Further, a cylindrical insulating case 16 is inserted on the outer peripheral side of the ground plate 7 and an insulating cover 17 is inserted and fitted on the inner peripheral side thereof. Insulation case 1
6. Insulating resin molds 18, 19 made of epoxy resin or the like are respectively injected into the inside of the insulating cover 17 to be integrally solidified.

FIGS. 6 to 11 show another embodiment. As shown in FIG. 11, projecting pieces 10 ₂ (1
1 ₂ ) is formed, and the protruding pieces 10 ₂ and 10 ₂ of the tab body 10 are bent to one side at one end of the center conductor 12 (13) to be fixed by caulking.
1 A center conductor with tabs.

12 to 17 show another embodiment, and as shown in FIG. 17, a transverse cut line is formed in the lower middle of the connecting tab body 10 (11).
10 ₃ (11 ₃ ) is inserted, and a channel-shaped protrusion 10 ₄ (11 ₄ ) is formed at the lower end from the transverse cut line 10 ₃ and the portion where the protrusion is formed of the tab body 10 is formed as shown by an arrow in FIG. The center conductor 12 (13) is bent to the rear surface side of the tab body 10 and one end of the center conductor 12 (13) is caulked and fixed 21 to the channel-shaped protrusion 10 ₄ to form a center conductor with a tab.

[Effect of device]

In the high-voltage capacitor of the present invention, the diameter of the connecting tab is eccentrically separated from the center conductor, and the size of the capacitor is reduced to achieve miniaturization. The tab can be easily manufactured by press molding, which reduces the size of the conventional capacitor. Since it is not necessary to add a special work process to the work process, the cost does not increase.

[Brief description of drawings]

1 to 5 relate to an embodiment of the present invention.
The figure is a front sectional view, FIG. 2 is a perspective view of a central conductor with tabs, FIG. 3 is a side view thereof, FIG. 4 is a rear view thereof, and FIG.
FIG. 6 is a sectional view taken along the line v--v in FIG. 6 to FIG. 11 according to another embodiment, FIG. 6 is a front sectional view, FIG. 7 is a perspective view of a central conductor with tabs, and FIG. A side view, FIG. 9 is a rear view thereof, FIG. 10 is a cross-sectional view taken along line xx of FIG. 9, FIG. 11 is a perspective view of the connection tab body before caulking, and FIGS. FIG. 12 is a front sectional view, FIG. 13 is a perspective view of a center conductor with tabs, FIG. 14 is its side view, FIG. 15 is its front view, and FIG. Fig. 15 x vi-x v
Fig. 17 is a sectional view taken along line i, Fig. 17 is a perspective view of the connecting tab body before caulking, and Figs. 18 and 19 relate to a conventional example. Fig. 18 is a front sectional view and Fig. 19 is a tab. It is a perspective view of an attached center conductor. 1,2 …… Through hole, 3,4 …… Front electrode, 5 …… Back electrode, 6 ……
Porcelain dielectric, 7 ... Ground plate, 7 ₁ ... Window, 8, 9 ... Electrode metal fitting, 10, 11 ... Connection tab body, 10 ₁ , 11 ₁・ ・ ・ Swelling part, 10 ₂ ,
11 ₂ ...... Projecting piece, 10 ₃ , 11 ₃ ...... Horizontal score line, 10 ₄ , 11 ₄ ...... Channel-shaped projection, 12,13 ...... Center conductor, 14,15 ...... Silicone tube, 16 ...... Insulation Case, 17 ... Insulating cover, 18,19 ... Insulating resin mold, 21 ... Crimping fixing part, D, d ... Interval, l ... Separation interval.

Claims (4)

(57) [Scope of utility model registration request] 1. A high voltage porcelain capacitor in which a silicone tube is adhered to a central conductor with a tab inserted through a through hole of a porcelain dielectric, and the whole is integrally solidified with an insulating resin mold. A high-voltage capacitor, characterized in that the central conductor is located on the side and the lower part of the tab body is caulked and fixed to one end of the central conductor to widen the interval between the tabs. 2. The high voltage capacitor according to claim 1, wherein the tab body has a bulging portion formed on one side of the lower central portion. 3. The high-voltage capacitor according to claim 1, wherein the tab body has protruding pieces formed on both ends of the lower portion. 4. The tab body has a transverse cut line formed in the middle of the lower portion thereof, and a channel-like projection is formed at the lower end from the transverse cut line, and the projecting portion forming portion of the tab body is formed on the tab body. The high voltage capacitor according to claim 1, wherein the high voltage capacitor is formed by bending the back surface side.