JPS605559Y2 - cylindrical capacitor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a fixed capacitor formed by stacking or winding a dielectric material and an electrode foil.

Conventionally, fixed capacitors of this kind have been attached to various parts using metal fittings 2, such as spot welding or winding tightening on the outer circumferential surface 1a, as shown in FIG. lead wire 1b
It was attached to a printed circuit board 4 by solder 3 that electrically connects the .

In the former case shown in Fig. 1, the fixed capacitor 1 is mounted and supported on one side of its circumference, so if the fixed capacitor 1 is mounted in a place that is easily affected by vibrations, such as the body of a car, the vibration will cause the mounting to become unstable. This may cause the fixed capacitor 1 to come loose, and if the connecting terminal 5 is attached separately from the fixed capacitor 1, it is troublesome to fix it by means such as tightening the screws 6.

In the latter case shown in FIG. 2, there was a risk that the lead wire 1b would break due to vibration or impact.

Conventionally, the following measures have been taken to improve the vibration resistance and impact resistance of the fixed capacitor 1 itself.

(a) Protect the outer peripheral surface of the fixed capacitor 1 with an iron case.

(b) For installation, increase the thickness and width of the metal fitting 2 to increase its strength.

(c) Fill the internal space of the fixed capacitor 1 with an insulating agent.

(d) Set the compression pressure inside the fixed capacitor 1 to be large.

However, even if these various measures were taken, sufficient vibration and shock resistance effects could not be obtained due to mechanical defects in the mounting of the fixed capacitor 1.

The present invention solves the above-mentioned drawbacks of the conventional capacitor, and provides a cylindrical capacitor that can be reliably mounted and has excellent vibration resistance and shock resistance.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 3 and 4.

7 is a cylindrical capacitor body (hereinafter simply referred to as 1 capacitor body).

), which is a general fixed capacitor made by stacking or winding a dielectric material and electrode foil, with a through hole 7a provided in the center to form a cylindrical shape. In the case of a winding tube, each winding is first wound around a relatively thick core (for example, outer diameter 7rrrm to 8 cores), and then an insulating pipe 8 (for example, inner diameter 4rrrIn to (about 5 TIVIL)
It is configured by inserting.

Both end surfaces 7b and 7C of the capacitor body 7 are treated with metallized film or paper, and then terminals 9 and 10 are soldered to both end surfaces 7b and 7c of the capacitor body 7.

Holes 9a and 10a, which are approximately the same size as the through hole 7a, are bored in the free ends of the terminals 9 and 10.

Reference numeral 11 denotes a case molded of resin or the like, and includes an outer cylinder part 11a into which the capacitor main body 7 is inserted along its outer peripheral surface, and an inner cylinder part 11b into which the insulating pipe 8 is inserted along the inner peripheral surface. The inner peripheral edge of one end of the outer cylinder part 11a and the inner cylinder part 1
The outer peripheral edge of one end of 1b is integrally connected by a disk portion 11c.

The case 11 has one end surface 7c of the capacitor body 7.
The capacitor main body 7 is internally inserted from the direction, and has an insertion hole 5lid for inserting the base portions 9b and 10b of the terminals 9 and 10.

Reference numeral 12 denotes a lid molded from resin or the like, which covers the opening edge of the case 11 to cover the other end surface 7b of the capacitor body 7.
The inner cylinder part 11b has a hole 12a that communicates with the hollow part of the inner cylinder part 11b.

In this way, the case 11 and the lid 12 are integrated into the resin case 1.
3, which covers and protects each circumferential surface of the capacitor body 7. Therefore, the form of the case 11 and the lid 12 is not limited to the above embodiment, and for example, the outer cylinder part 11a1, the inner cylinder part 1
1b1 disk portion 11c and lid 12 may be molded as separate bodies and then fitted or bonded to form an integrated resin case 13. Alternatively, the insulating pipe 8 may be integrally formed in the resin case 13. It may be molded.

According to the above structure, the capacitor main body 7 housed in the resin case 13 can be inserted into the through hole 7a as shown in FIG.
In order to insert the support member 14 into the support member 14, the support member 14 is attached to a predetermined position of the support member 14 using a metal fitting, for example, a bolt 15.

At that time, the bases 9b and 10b of the terminals 9 and 10 are curved outward to match the respective insertion holes 9a and 10a with the through hole 7a, and the bolt 15 is inserted into the insertion holes 9a and 10.
a and the through hole 7a to fix the terminals 9 and 10 at the same time.

Reference numeral 16 denotes a connection terminal, which is crimp-connected to one terminal 9 by tightening a bolt 15, and is connected to an electric cord 17.
have.

An insulator 18 is interposed between the bolt 15 and one of the terminals 9 and the connecting terminal 16 to keep them insulated from each other.

The other terminal 9 is crimped onto the support body 14 side and electrically connected.

Incidentally, instead of the resin case 13, the outer circumferential surface of the capacitor body 7, the inner circumferential surface of the insulating pipe 8, the inner circumferential surface of the through hole 7a, etc. may be immersed in a resin liquid and molded with resin, etc., as appropriate. It is possible to apply an exterior covering, and the uncovered capacitor main body 7 may be directly attached and used without applying any of the above-mentioned various exterior coverings.

Furthermore, the wiring means for drawing out the electrodes of the capacitor body 7 is arbitrary, and the electrodes in any direction can be set as an anode or a cathode when mounting the capacitor body 7 depending on the selection and setting of the placement position of the insulator 18, etc. It is possible.

That is, the present invention comprises: a cylindrical capacitor body having a through hole in the center and treated with metallicon; a terminal having a through hole and fixed to both end surfaces of the cylindrical capacitor body via the base; A case including an outer cylinder part and an inner cylinder part to be inserted along the outer peripheral surface and the through hole of the cylindrical capacitor body, and an insertion groove in the outer cylinder part through which the base of the terminal is inserted; A cylindrical capacitor characterized in that it is composed of a disk portion provided on the outer peripheral edge of one end and having a communication hole in the center, and a lid provided on the opening edge of the other end of the case and having a communication hole in the center. It has the following unique effects.

(a) Since the cylindrical capacitor main body is inserted into the case consisting of an outer peripheral part and an inner cylindrical part, the peripheral surface of the capacitor main body can be protected and durability can be improved. Or it can be made compact and convenient for transportation.

(b) Terminals each having a base of a predetermined length and having a through hole at the tip were fixed to both end faces of the cylindrical capacitor body, so when fixing the capacitor body to the support, the base By bending each terminal, the terminal can be used as a so-called washer function, and the assembly of the capacitor body is extremely simple and quick, and the number of assembly steps can be reduced.

(c) Since the outer peripheral edge of one end of the case is provided with a disc portion having a communication hole in the center, and the opening edge of the other end of the case is provided with a lid having a communication hole in the center, bolts etc. can be inserted into the communication hole. The capacitor body can be fixed to the support body in the same manner by inserting the capacitor body into the support body and fixing it with screws.
In addition to simplifying the configuration, it is possible to simplify the fixing work and stabilize the fixing state.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional fixed capacitor, Fig. 2 is a front view of another conventional fixed capacitor, Fig. 3 is an exploded perspective view of a cylindrical capacitor according to the present invention, and Fig. 4 is the same as Fig. 3. This is a front view showing how the cylindrical capacitor is installed. 7...Capacitor body, 7a...Through hole, 8...Insulating pipe, 9.10...
・Terminal, 13...Resin case, 14...
...Support body, 15...Bolt.

Claims (1)

[Scope of utility model registration request] A cylindrical capacitor body provided with a through hole in the center and subjected to metallization treatment, a terminal having a through hole and fixed to both end surfaces of the cylindrical capacitor body through the base, and the cylindrical capacitor body A case having an outer cylindrical part and an inner cylindrical part to be inserted along an outer circumferential surface and a through hole, the outer cylindrical part having an insertion groove through which the base of the terminal is inserted, and an outer periphery of one end of the case. What is claimed is: 1. A cylindrical capacitor comprising: a disc portion provided at the other end of the case and having a communication hole at the center; and a lid provided at the opening edge of the other end of the case and having a communication hole at the center.