JP3078082B2 - Capacitor mounting device and mounting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for mounting a capacitor.

[0002]

2. Description of the Related Art Conventionally, when a large-sized capacitor, for example, an aluminum electrolytic capacitor is mounted on a chassis of electric equipment or electronic equipment, an aluminum case is insulated as shown in FIG. After that, the band-shaped mounting bracket is screwed to the capacitor, and the band-shaped mounting bracket is generally fixed to the chassis.

[0003] When mounting the capacitor using the aluminum case of the medium-size electrical apparatus, the chassis of an electronic device, to an aluminum case mounting device can not be soldered, strip attached as shown in FIGS. 8 and 9 The capacitor is mounted and fixed to the chassis using metal fittings or a hook mounting bracket as shown in FIG. 10 , or a capacitor using a synthetic resin case integrally formed with mounting feet as shown in FIG. That is common.

[0004]

However, when the capacitor is mounted on the surface of the chassis using the mounting device described above,

(A) In the mounting method using the band-shaped mounting bracket shown in FIG. 8 , it is necessary to mount the capacitor to the capacitor in advance with screws, and at this time, the vertical positional relationship between the band-shaped mounting bracket and the capacitor body, and the terminals of the capacitor. It is necessary to perform the operation of determining the positional relationship between the belt and the band-shaped mounting bracket in the rotation direction. When the capacitor is to be mounted insulated from the chassis, it is necessary to cover the capacitor with an insulating tube or to mount and fix the capacitor to a band-shaped mounting bracket via a band-shaped insulator.

(B) The mounting method using the band-shaped mounting bracket shown in FIG. 9 has a function of mounting the band-shaped mounting bracket on the capacitor and a function of mounting and fixing the capacitor to the chassis via the band-shaped mounting bracket. Although it is also used as a screw, the capacitor floats from the chassis due to vibration or impact after mounting, or rotates around the mounted screw. Therefore, it can be applied only to a relatively small capacitor. Regarding the problem of insulation between the chassis and the capacitor,
This is the same as (a) above.

(C) In the mounting method using the hook mounting bracket shown in FIG. 10 , the mounting bracket is attached to the upper winding portion of the capacitor.
Due to the hooking structure, it is difficult to insulate the capacitor and the chassis. Therefore, it is necessary to interpose an insulating plate between the capacitor and the chassis. Further, if the thickness of the chassis is thin, the strength is weak, and the chassis is lost and distorted by the hook mounting bracket.

(D) When the capacitor is mounted on the surface of the chassis, since the center of gravity of the capacitor is separated from the surface of the chassis, even if the large-sized capacitor is mounted horizontally or vertically, force or vibration is generated in the horizontal direction. If so, some support is needed at the top of the capacitor case.

(E) In order to insulate the capacitor from the chassis, the method of covering the capacitor with an insulating tube or storing the capacitor in an insulating case impedes the heat radiation of the capacitor. It is necessary to use it at a lower ambient temperature than when no insulating case is used. There were problems such as.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a capacitor mounting device and a mounting method which solve the above problems. That is, the present invention provides a capacitor element, a metal case provided with a plurality of grooves or depressions on an outer peripheral surface containing the capacitor element, or an exterior covering the metal case, and fitted into the opening of the metal case. A capacitor having an insulating sealing plate provided with a terminal to be sealed, a body, a flange connected to the body, a plurality of elastic arms provided at both open ends of the body, And a through-insulating bushing having a projection provided at a predetermined position, wherein the inner surface of the through-insulating bushing is brought into contact with the outer peripheral surface of the capacitor, and the projection is fitted into the groove or the recess to insulate the capacitor. A capacitor mounting device and a mounting method, wherein the device is mounted and fixed to a bushing.

[0011]

[Action] When mounting fixing the capacitor to the through insulating bushing, substantially abut the side peripheral surface of the capacitor on an inner peripheral surface of the through insulating bushing fitted a capacitor through an insulating bushing, the condenser metal case or the Money
The groove or the dent provided on the exterior covering the metal case
The protrusion provided on the arm of the through-insulation bushing is fitted, or the through-hole is divided into multiple parts on the side peripheral surface of the capacitor.
The inner circumferential surface of the insulating bushing abuts fitted projection provided on the arm of the through insulating bushing provided grooves or recesses in the outer coated on a metal case or the metal case of the capacitor, of the through insulating bushing When the outer peripheral surface is tightened with a tying band, the protrusion strongly presses the groove or dent by the elasticity of the arm, and the capacitor is
Attach and fix to the through insulating bushing .

[0012] Then when mounting the capacitor which is mounted fixed to the through insulating bushing to the chassis, the through insulating Bed
Or the flange and the chassis provided on ashing for mounting fixed by rivets or bolts and nuts, by utilizing a screw hole formed in the through insulating bushing <br/> attaching fixing the through insulating bushing and chassis with screws.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments shown in FIGS . 1 to 7 , the same reference numerals denote the same corresponding parts, and FIGS .
In FIG. 7 , the description is omitted.

FIG. 1 is a perspective view of one embodiment of a capacitor mounting apparatus according to the present invention.
In the examples, (A) is a plan view and (B) is a front view. In FIG. 1, a capacitor element (not shown) is housed in a capacitor metal case 3 provided with two grooves 3a and one sealing plate fixing groove 3b on the outer peripheral surface, and impregnated and filled with an impregnating agent. An insulating sealing plate 4 having a terminal 5 is fitted into the opening of the metal case 3, and the opening is wound tightly to form the capacitor 2.

Reference numeral 6 denotes a through-insulating bushing, which has a flange 6 b on the outer peripheral surface of a cylindrical body 6 a having the same shape as the capacitor 2.
Are provided at both open ends 6c of the body portion 6a (6 in FIG. 1).
An arm 6d having elasticity of this), the respective arm 6d is provided with one protrusion 6e toward the inward position.

When a capacitor is mounted and fixed to a chassis 1 of an electric device, an electronic device, or the like, first, the capacitor 2 is inserted through the chassis 1.
And挿貫along the inner circumferential surface of the body portion 6a of the through insulating bushing 6, with contact or allowed to substantially abut the inner peripheral surface of the body portion 6a of the outer peripheral surface of the metal case 3, the grooves 3 of the metal case 3
a projection 6 provided on the arm 6d of the through insulating bushing 6
e is fitted, the protrusion 6e is strongly pressed grooves 3a by the elasticity of the arm 6d, through insulating bushing to the capacitor 2
6 and fix it.

Next, the capacitor 2 is mounted and fixed through.
Insert the insulating bushing 6 into the through hole 1a of the chassis 1,
Mounting hole 6 provided in flange 6b of through insulating bushing 6
f and the mounting hole 1b of the chassis 1 are fixed by caulking with a rivet 7a, and the capacitor 2 is mounted and fixed to the chassis 1 through the through insulating bushing 6 .

When mounting and fixing the capacitor to the chassis, the capacitor 2 is first penetrated and insulated as described above.
Or attached to the bushing 6, or above the through insulating bushings
The attachment of the thing 6 to the chassis 1 may be determined by judging which attachment is easy in terms of work and appropriately selecting the attachment.

In the above embodiment, a through insulating bushing is used.
By providing irregularities 6g on the inner peripheral surface of the body 6a of 6
The abutment between the inner peripheral surface of the body portion 6a of the bushing 6 and the outer peripheral surface of the metal case 3 of the capacitor 2 was significantly reduced, resulting in partial contact, and the heat radiation effect was further improved.

2A and 2B show another embodiment of the capacitor mounting apparatus according to the present invention, wherein FIG. 2A is a plan view and FIG. 2B is a front view.
FIG. 2 shows a structure in which a plurality of upper and lower arms (12 in FIG. 2) 6d are tied by a tying band 8 as means for reinforcing the elasticity of the arms 6d of the through insulating bushing 6 in FIG. Vibration and impact resistance were significantly improved.

3A and 3B show another embodiment of the capacitor mounting apparatus according to the present invention. FIG. 3A is a plan view and FIG. 3B is a front view.
FIG. 3 shows a case where the present invention is applied to a capacitor having a low case height. In FIG. 1, the sealing plate fixing groove 3b and the groove 3a provided in the upper part of the metal case 3 are shared at one place, and the through insulating block is used.
A plurality of upper (six in FIG. 3) arms 6d serve as auxiliary means for reinforcing the elasticity of the arms 6d of the shing 6 .
Are bound by a binding band 8. The upper and lower arms 6d may be bound by the binding band 8 depending on the use.

4A and 4B show another embodiment of the capacitor mounting apparatus according to the present invention, wherein FIG. 4A is a plan view and FIG. 4B is a front view.
FIG. 4 is a cross-sectional view of FIG.
No arm is provided at the upper open end 6c of the capacitor a, and the capacitor 2 is provided with a band-shaped convex portion 3c on a part of the outer peripheral surface of the metal case 3,
When挿貫capacitor 2 through the insulating bushing 6, transmural
Upper open end 6c of the body portion 6a of the through insulating bushing 6 locks the belt-like convex portion 3c of the capacitor 2, transmural in the lower
The protrusion 6e of the arm 6d of the through insulating bushing 6 fits into the groove 3a of the metal case 3.

FIG. 5 shows another embodiment of the capacitor mounting apparatus according to the present invention, in which (A) is a plan view and (B) is a front view. FIG. 5 is a sectional view of FIG.
The capacitor 2 is provided with a single groove 3a on the outer peripheral surface of the metal case 3 without providing an arm at the lower open end 6c and without providing a belt-shaped convex portion on the outer peripheral surface of the body portion 6a. Used for applications with low vibration and shock.

FIGS. 6A and 6B show another embodiment of the capacitor mounting apparatus of the present invention, wherein FIG. 6A is a plan view and FIG. 6B is a front view.
FIG. 6 shows the body 6 of the through insulating bushing 6 in FIG.
a is divided into two parts by removing the front part and the rear part, and the position of the mounting hole 6f of the flange 6b is changed. By removing one part of the body part 6a, the heat radiation effect of the capacitor is further improved. It became.

In each of the embodiments shown in FIGS . 1 to 6, the groove provided in the metal case of the capacitor and the through insulating block are provided.
The case where the projection provided on the sing arm is fitted is described.
In this case, a similar effect is achieved.

In the embodiment shown in FIGS. 1 to 6, the capacitor may rotate in the through insulating bushing due to vibration or impact. As a method of preventing this, there is a method of bonding the capacitor and the through insulating bushing with an adhesive, but a problem may occur in durability depending on a use environment. For this purpose, a penetrating insulating bushing arm is mounted on the metal case of the capacitor.
A protrusion is provided in a portion other than the portion where the protrusion contacts , or a recess is provided in a portion where the protrusion of the arm fits instead of providing a groove in the metal case to prevent the rotation of the capacitor.

FIG . 7 is a perspective view for explaining another embodiment of the present invention immediately before a cover is fitted to an arm of a through-insulating bushing fitted with a capacitor. When the capacitor is mounted on the through insulating bushing , the groove 3a provided in the metal case 3 and the arm 6d of the through insulating bushing 6
In order to reinforce the fitting force with the projection 6e provided on the base and to prevent the capacitor from rotating, the bottomed cylindrical insulating cover 10 is attached to the capacitor 2
6d of the penetrating insulating bushing 6
And when fitted, the terminal 5 of the capacitor 2 through the insulating bush
The position of the arm 6d of the ring 6 does not rotate.

That is, the above-mentioned bottomed cylindrical insulating cover 10 has a through insulating bush near the opening 10b on the side peripheral surface 10a.
Guide grooves 10c fitted with the arms 6d of the ring 6
In addition, a terminal hole 10e is provided at a position where the terminal 5 of the capacitor 2 is fitted to the bottom portion 10d, and a plurality of windows 10f are provided on the side peripheral surface 10a to improve the heat radiation effect.

Then, the capacitor 2 is penetrated through an insulating bushing.
6 and fix the insulating cover 10 to the capacitor 2
To cover the guide groove 10 of the insulating cover 10.
c and the arm 6d of the through insulating bushing 6 are fitted together and the capacitor 2 is inserted into the terminal hole 10e of the insulating cover 10.
Of the capacitor 2 and the through insulating block 3a.
It is possible to reinforce the fitting / mounting and fixing of the projection 6e of the arm 6d of the bushing 6 and prevent the rotation of the capacitor 2 in the through insulating bushing 6 .

[0030]

As described above , the present invention penetrates a capacitor.
A mounting device and a mounting method for a capacitor which is mounted and fixed to a chassis via an insulating bushing, thereby improving the insulation between the capacitor and the chassis, improving the heat radiation effect by removing at least one portion of the trunk of the through insulating bushing , and improving the heat dissipation effect. The protrusion of the arm of the penetrating insulating bushing is fitted and fixed in the groove or recess of the arm, so there is no need to worry about the mounting position, and there is no work such as soldering. Workability is improved, and through the use of an insulating cover with guide grooves and terminal holes,
This has the effect of preventing rotation of the capacitor in the insulating bushing , and is of great industrial and practical value.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a capacitor mounting device according to the present invention;
(A) is a plan view and (B) is a front view.

2 (A) is a plan view and FIG. 2 (B) is a front view of another embodiment of the capacitor mounting device according to the present invention.

3A is a plan view and FIG. 3B is a front view of another embodiment of the capacitor mounting device according to the present invention.

4A is a plan view and FIG. 4B is a front view of another embodiment of the capacitor mounting device according to the present invention.

5A is a plan view and FIG. 5B is a front view of another embodiment of the capacitor mounting device according to the present invention.

6A is a plan view and FIG. 6B is a front view of another embodiment of the capacitor mounting device according to the present invention.

FIG. 7 is a perspective view for explanation just before fitting a cover to an arm of a through insulating bushing fitted with a capacitor in another embodiment according to the present invention.

FIG. 8 shows a conventional capacitor to which a band-shaped mounting bracket is attached.
In the example, (A) is a plan view and (B) is a front view.

FIG. 9 shows a conventional capacitor to which a band-shaped mounting bracket is attached.
In the example, (A) is a plan view and (B) is a front view.

10A and 10B are an example of a conventional capacitor to which a hook mounting bracket is attached, wherein FIG. 10A is a plan view and FIG. 10B is a front view.

11A is a plan view of one example of a conventional capacitor using a synthetic resin case in which mounting feet are integrally formed, FIG.
(B) is a front view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Chassis of electrical equipment, electronic equipment, etc. 1a Through hole provided in chassis 1 2 Capacitor 3 Metal case 3a Groove provided on outer peripheral surface of metal case 3 3b Sealing plate fixing groove provided in metal case 3 3c Metal case 3 4b Insulated sealing plate 5 Terminal 6 Penetrating insulating bushing 6a Body part of penetrating insulating bushing 6b Flange provided on outer peripheral surface of body part 6a 6c Open end of body part 6a Open end 6d 6c Elastic arm provided on 6c 6e Projection provided on arm 6d 6f Mounting hole provided on flange 6b 6g Irregularities provided on trunk 6a 7a Rivets 8 Binding band 10 Bottom cylindrical insulating cover 10a Side of insulating cover 10 Peripheral surface 10b Opening 10c in side peripheral surface 10a Guide groove provided in opening 10b 10d Bottom 10e of insulating cover 10 End provided in bottom 10d Child hole 10f Window provided on side peripheral surface 10a

Claims (9)

(57) [Claims] 1. A metal case having a plurality of grooves or depressions formed on an outer peripheral surface of a capacitor element and the capacitor element, or an exterior covering the metal case, and fitting / closing into an opening of the metal case. A capacitor provided with an insulating sealing plate having terminals to be connected, a body, a flange connected to the body, a plurality of elastic arms provided at both open ends of the body, and a predetermined position of the arm. And a protrusion provided on the arm by fitting the protrusion provided on the arm into a groove or a recess provided on the metal case or the exterior so as to attach and fix the capacitor to the through insulating bushing. A mounting device for a capacitor, comprising: 2. A part of the through insulating bushing is omitted.
And dividing the through insulating bushing into a plurality
Protrusion provided on the arm of the edge bushing and metal of the capacitor
The groove provided on the case or the exterior covered with the metal case
It is noted that the fitting part with the hollow is reinforced with a binding band.
2. The capacitor mounting device according to claim 1, wherein: 3. The through insulating bushing is divided into a plurality of pieces.
And a projection provided on the arm of the through insulating bushing.
Metal case of DENSA or exterior covering the metal case
Reinforcing the fitting part with the groove or recess provided in the
The capacitor mounting device according to claim 1, wherein 4. A fitting portion between the projection provided on the arm of the through insulating bushing and a groove or a recess provided on a metal case of the capacitor or an exterior covering the metal case is reinforced by a binding band. The mounting device for a capacitor according to claim 1 . 5. Izu 4 to the binding band is not claim 2, characterized in that it has an anti-rotation feature of the capacitor
Mounting device for these capacitors. 6. The capacitor mounting device according to claim 1, wherein the inner peripheral surface of the through insulating bushing is provided with irregularities. 7. The capacitor mounting device according to claim 1, wherein a band-shaped convex portion is provided on a part of the outer peripheral surface of the metal case of the capacitor. 8. A capacitor element is housed in a metal case having a plurality of grooves or depressions formed on an outer peripheral surface, and an insulating sealing plate having a terminal in an opening of the metal case is fitted / sealed and required. Accordingly, a capacitor is formed by coating and covering the metal case, and the capacitor is provided in a through-insulating bushing in which a plurality of elastic arms provided at both open ends of a body integrally formed with flanges are provided with projections at predetermined positions. The mounting of the capacitor, wherein the protrusion provided with the arm is fitted into the groove or the recess provided in the metal case or the exterior, and the capacitor is mounted and fixed to the through insulating bushing by elasticity of the arm. Method. 9. A capacitor having a plurality of guide grooves near an opening on a side peripheral surface having a plurality of windows, and a bottomed cylindrical insulating cover provided with a terminal hole at the bottom, respectively, are covered from the terminal side of the capacitor.
8. the protrusion and the guide groove is fitted at the same time the insulating cover terminal hole of which is provided on the arm of the through insulating bushing, characterized in that fitted to the terminals of the capacitor
How to install capacitors.