KR101897155B1 - Lead Insertion Into Center Core Type Capacitor - Google Patents

Abstract

A lead-wire hollow core insertion type cylindrical capacitor comprising: a hollow normal metal case (10) having a lower portion and a side wall closed and an upper portion opened; A capacitor element 20 embedded in the metal case 10 and having a hollow core 15 formed by winding a dielectric film up and down; A circular deck 30 fixed to the upper portion of the metal case 10; First and second terminals (41, 42) exposed to the deck (30, Deck) and electrically connected to the capacitor element (20); A lower insulating base 70 made of a plastic material for insulating the bottom of the metal case 10 and the lower portion of the capacitor element 20; An insulative interposing part 80 of a flexible plastic material which is located inside the metal case 10 and insulates the device 20 from the inner wall of the metal case 10; An insulating filling resin (not shown) that solidifies and fills the outer space of the capacitor element 20 and the insulating interiors 80; A short bus bar (50) electrically connected to the first terminal (41) of the deck (30, Deck) and making contact with the upper surface (21) of the capacitor element (20); And an extension bus bar 60 having an upper side coupled to the second terminal 42 and a lower end penetrating the hollow core 15 and contacting the lower side of the lower surface of the capacitor element 20, Wherein the lead-wire hollow core-inserted cylindrical capacitor is made of a metal.

Description

{Lead Insertion Into Center Core Type Capacitor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead-wire hollow core insertion type cylindrical capacitor developed for increasing the safety, productivity and durability of a capacitor.

2. Description of the Related Art Generally, a capacitor is installed in an electric device such as an inductive device part such as a motor and an electronic device, and is formed so that a terminal can be used for power factor correction. In such a condenser, when the protruding terminal is exposed to a humid condition, a short circuit phenomenon occurs between the terminals, and a high current flows, which often causes problems of safety accidents.

In such a conventional capacitor, the insulating oil and the element insulating case for insulating the element and the case are built in the inside of the aluminum case so that the inside and the outside of the case are insulated, and the cap and the terminal plate, Rivetted, and these terminals are formed by soldering or spotwelding to the element a lead frame or lead wire.

Open Utility Model No. 20-2008-0001413 discloses a battery pack having an upper open case in which an element for charging and discharging electricity and an insulating oil are accommodated; The capacitor includes a cover member which is coupled to an opening of the case and has a pair of terminals at an upper portion thereof and an expansion groove at an edge thereof. The cover member is protruded along a circumference of the cover member at a predetermined length, A cover protrusion which is pressed on an inner circumferential surface of the opening of the case; an element connection terminal which is coupled to the lower end of the terminal and protrudes by a predetermined length, in the cover protrusion; And a safety member having a predetermined thickness which is formed in the protrusion inserting port and the terminal inserting port so that the fixing protrusion and the element connecting terminal are fitted to each other and is tightly fitted to the end of the cover protrusion, Is connected to the element at the end of the element connection terminal which is fitted through the terminal insertion opening of the safety member Discloses a capacitor built-in safety device is characterized in that the lead wire is bonded.

The conventional cylindrical capacitor has a problem that the lead wiring operation is difficult and the shortening of the life span and the durability are deteriorated due to the wiring work failure.

SUMMARY OF THE INVENTION The present invention is to provide a lead-wire hollow core insertion type structure improving cylindrical capacitor which has an effect of increasing the lifetime and durability of the capacitor by making the bus bar penetrate through the hollow core to secure contact with the sprayed surface.

It is another object of the present invention to provide a lead-wire hollow core insert type structure improving cylindrical capacitor which is excellent in workability of inserting and fixing a metal case of a device in a state where a bus bar is coupled by insertion of an extension bus bar after insertion of a device and introduction of a lower base.

In the lead-wire hollow core-inserted cylindrical capacitor,

A hollow normal metal case 10 in which a lower portion and a side wall are closed and an upper portion is opened;

A capacitor element 20 embedded in the metal case 10 and having a hollow core 15 formed by winding a dielectric film up and down;

A circular deck 30 fixed to the upper portion of the metal case 10;

First and second terminals (41, 42) exposed to the deck (30, Deck) and electrically connected to the capacitor element (20);

A lower insulating base 70 made of a plastic material for insulating the bottom of the metal case 10 and the lower portion of the capacitor element 20;

An insulative interposing part 80 of a flexible plastic material which is located inside the metal case 10 and insulates the device 20 from the inner wall of the metal case 10;

An insulating filling resin (not shown) that solidifies and fills the outer space of the capacitor element 20 and the insulating interiors 80;

A short bus bar (50) electrically connected to the first terminal (41) of the deck (30, Deck) and making contact with the upper surface (21) of the capacitor element (20);

An extension booth bar 60 having an upper side connected to the second terminal 42 and penetrating the hollow core 15 and having a lower end in contact with the lower welding surface 25 of the capacitor element 20;

Wherein the hollow cylindrical core-inserted type cylindrical capacitor comprises a hollow cylindrical core.

According to the present invention, there is provided a lead-wire hollow core insertion type structure improving cylindrical capacitor which has an effect of increasing the life of the capacitor and improving the durability by penetrating the extension bus bar into the hollow core to ensure contact with the sprayed surface,

Further, there is provided a lead-wire hollow core insertion type structure improving cylindrical capacitor excellent in insertion, fixation, and workability of a metal case of a device in a state where a bus bar is coupled by introduction of a lower base after insertion of an extension bus bar.

According to the present invention, when a deck, a terminal, and a universal bus bar assembly are jointly mass-produced, various types of capacitors can be manufactured by applying different specifications to each other, which is advantageous in terms of productivity, workability, and cost There is provided a lead-wire hollow core insertion type structure-improving cylindrical capacitor.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating the structure and improved assembly of a lead-in hollow core type structure-improved cylindrical capacitor of the present invention. FIG.
Fig. 2 is a block diagram of a capacitor circular deck and an extension bus bar according to the first embodiment of the present invention (Fig. 1, 1)
Fig. 3 is a schematic diagram of a capacitor circular deck, an extension bus bar, and an element coupling diagram (4 in Fig. 1) according to a first embodiment of the present invention;
4 is a detailed view (6 in Fig. 1) of the lower insulating base according to the first embodiment of the present invention,
Fig. 5 is a schematic diagram of a capacitor circular deck, an extension bus bar, a device and a metal case coupling diagram (8 in Fig. 1) according to the first embodiment of the present invention,
6 is an external view of a capacitor according to a first embodiment of the present invention; (9 in Fig. 1)
FIGS. 7, 8, and 9 are diagrams showing a structure of a lead-in hollow core inserted type structure improving cylindrical capacitor according to a second embodiment of the present invention;
10 is a view showing the connection between the round deck, the N-pole terminal and the intermediate bus bar of the present invention.
11 is a view showing the connection between the round deck, the P-pole terminal and the short-circuit bus bar of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a lead wire hollow core insertion type structure improving cylindrical capacitor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 2 is a block diagram of a capacitor circular deck and an extension bus bar (1 in FIG. 1) according to a first embodiment of the present invention, FIG. 3 (4 in Fig. 1), Fig. 4 is a detailed view (6 in Fig. 1) of the lower insulating base according to the first embodiment of the present invention, And FIG. 5 is a view of a capacitor circular deck, an extension bus bar, a device and a metal case coupling (8 in FIG. 1) according to the first embodiment of the present invention, and FIG. 6 is a view of a capacitor according to the first embodiment of the present invention. (9 in FIG. 1), and FIGS. 7, 8, and 9 are structural diagrams of the lead-wire hollow core insertion type structure improving cylindrical capacitor according to the second embodiment of the present invention.

1 to 6, the lead wire hollow core inserted type structure improving cylindrical capacitor of the present invention includes a hollow normal metal case 10 having a lower portion and a side wall closed and an upper portion opened, A capacitor element 20 having a hollow core 15 formed by winding up a dielectric film and formed in an up and down direction and a circular deck 30 positioned and fixed to an upper portion of the metal case 10.

1 to 6, the lead-wire hollow core-inserted structure-improving cylindrical capacitor of the present invention includes a first, a second, a third, A lower insulating base 70 made of a plastic material for insulating the bottom of the metal case 10 and the lower portion of the capacitor element 20 from each other, And an insulating interposing portion 80 made of a flexible plastic material for insulating the element 20 and the inner wall of the metal case 10 from each other.

1 to 6, an insulating filling resin (not shown) fills the outer space of the capacitor element 20 and the inner space of the insulating interiors 80 and is solidified. The short bus bar 50 is electrically connected to the first terminal 41 of the deck 30 and contacts the upper crucible 21 of the capacitor element 20. The upper end of the extension bus bar 60 is coupled to the second terminal 42 and the lower end of the extension bus bar 60 penetrates through the hollow core 15 to contact the lower surface of the capacitor element 20.

As shown in Figs. 1 to 6, in the lead wire hollow core insertion type structure improving cylindrical capacitor of the present invention, the extension bus bar 60 is composed of the first and second extension bus bars 61 and 62, The first extension busbar 61 contacts the lower surface of the capacitor element 20 at one side and the second extension busbar 62 contacts the lower surface of the capacitor element 20 at the other side.

For example, the first and second extension bus bars 61 and 62 may be bars (plate bars) having a predetermined width (for example, 2 to 15 mm) and a predetermined thickness (for example, 0.3 to 3 mm) Shape. The upper ends of the first and second extension bus bars 61 and 62 are first connected to the lower end of the universal bus bar 90 by rivets and welded with a conductive metal to increase the electrical and mechanical coupling force and to improve workability durability . The lower ends of the first and second extension bus bars (61, 62) are contact-welded to the lower welding surface of the element.

<Circular deck, N-pole terminal, universal bus bar connection>

The extension bus bar 60 of the present invention is fixed to the circular deck 30 (Deck) together with the second terminal (N-pole terminal 42) And is electrically connected to the second terminal 42 (N-pole) by being fixed to the lower portion of the universal bus bar 90 extending downward at a position corresponding to the first terminal 15 (deck center). The lower portion of the universal bus bar 90 and the extension bus bar 60 are welded in a second order to increase the electrical contact after the primary riveting connection (increased mechanical strength).

After the second terminal (N-pole terminal, 42) and the universal bus bar 90 are integrally produced by insert injection into the circular deck 30 made of plastic, the capacitor element 20 The second extension bus bar 62 having a size (length) corresponding to the width of the capacitor element 20 is assembled to the lower portion of the universal bus bar 90 according to the size and the specification (type) of the width.

Here, the general purpose booth is a booth used in the multi-purpose specification regardless of the specifications of the capacitor (the total height of the capacitor, the small width, for example, 30 mm, 75 mm, and 200 mm based on the device width). The use of common circular deck assemblies (rather than producing circular decks per specification) increases the production cost, operability, and production efficiency of the capacitor.

11, the second terminal (N-pole terminal) 42 and the upper horizontal board 91 of the universal bus bar 90 are fixed by insert injection to a circular deck 30 made of plastic. The second terminal (N-pole terminal, 42) has a hollow cylindrical shape formed on the inner circumferential surface of the spiral portion, and the lower portion is in contact with the upper horizontal plate 91 of the universal bus bar 90. The upper horizontal board 91 of the universal bus bar 90 is connected to the lower surface of the second terminal (N-pole terminal 42) through the rivetting or coupling hole primarily (increase in mechanical strength) It is welded at the bottom of the car. The downward connecting plate 92 of the universal bus bar 90 is bent downward at the end of the upper horizontal plate 91 at the position of the deck center so as to be inserted into the hollow core 15 and extends downward.

<Circular deck, P-pole terminal, short-circuit busbar connection>

As shown in FIG. 10 (FIGS. 1 and 2), a first terminal (P-pole terminal, 41) and a short-circuit bus bar (50) are fixed by insert injection to the circular deck (30) , The first terminal (P-pole terminal, 41) is a hollow cylinder type in which the spiral portion is formed on the inner circumferential surface, and the lower portion is in contact with the center plate (50a) of the short-circuit bus bar (50). The short booth bar 50 is constituted by the center plate 50a and the bus bar pieces 51 and 52 extending in the V shape on both sides in the center plate 50a.

After the insert injection, the lower part of the hollow cylindrical first terminal (P-pole terminal) 41 and the center plate 50a are embedded in the central frame 31 across the center of the circular deck 30 (Deck). The upper portion of the first terminal (P-pole terminal 41) is exposed to the upper portion of the central frame 31 and the ends of the bus bar fragments 51 and 52 extending laterally to the V-shape are exposed to both sides of the central frame 31 And is contact-welded to the upper crucible surface of the capacitor element 20. [

5, the lower insulating base 70 includes a bottom surface 71 that is in contact with the upper surface of the bottom of the metal case 10, a side skirt plate 70 extending vertically upwardly around the bottom surface 71, (73). The lower insulating base 70 may further include a center protruding rod 75 inserted into the hollow core 15 of the capacitor element 20 at the center. The insulating interposer 80 is preferably made of one material selected from paper, PE (polyethylene), and PP (polypropylene).

As shown in Figs. 4 (a), (b) and (c), the outer circumferential surface of the center projecting rod 75 is inserted into the hollow portion of the hollow core 15 in a shape tapered upward (tapered). As shown in FIG. 4B, the center protruding bar 75 is formed in an oval shape and inserted into a gap between the extension bus bars at the end of the hollow core 15 as shown in FIG. 4C. The inner circumferential surface of the hollow core 15 is formed in a hexagonal shape to facilitate contact and seating of the extension bus bar. The first extension bus bar 61 and the second extension bus bar 62 which are in contact with the lower welding surface of the capacitor element 20 form a gap for inserting the center projecting rod 75 after welding. The lower insulating base 70 is inserted into the upper surface of the bottom of the metal case 10 and the hollow core 15 of the element is inserted into the center projecting bar 75 at the time of assembly so that the center of the element And assists assembly.

4, it is preferable that a stopper 35, which designates an interpolation limit of the metal case 10, is protruded inward from the inner wall of the circular deck 30 (Deck).

As shown in FIGS. 7, 8 and 9 (and FIGS. 1 to 5), the lead wire hollow core insertion type cylindrical capacitor according to the second embodiment of the present invention is a hollow capacitor type in which a lower and a side wall are closed, A hollow deck 30 formed in the metal case 10 and wound with a dielectric film and formed with a long vertical length, And a second capacitor element 120 having a hollow core 115 which is embedded in the metal case 10 and which is formed by winding a dielectric film and has an elongated upper and lower ends.

The first and second terminals (41, 42) are exposed to the deck (30) and electrically connected to the first and second capacitor elements (20, 120) A lower insulating base 70 made of a plastic material that insulates the bottom of the second capacitor element 120 from the bottom of the metal case 10, And an insulating interposing portion 80 made of a flexible plastic material for insulating between the insulating interposing portions 80.

As shown in FIGS. 7, 8 and 9 (and FIGS. 1 to 5), in the lead wire hollow core insertion type cylindrical capacitor according to the second embodiment of the present invention, the insulating filling resin (not shown) And the first short-circuit bus bar 51 is electrically connected to the first terminal 41 of the deck 30 (Deck), and the first short-circuit bus bar 51 is electrically connected to the first terminal 41 of the deck 30, Contact the upper surface (21) of the element (20). The second outer extension bus bar 152 is electrically connected to the first terminal 41 of the deck 30 or the top surface of the first capacitor element 20 and the first and second capacitor elements 20 and 120, and contacts the lower surface of the lower surface 121 of the second capacitor element 120. [

The first extension bus bar 161 is coupled to the second terminal 42 and passes through the hollow core 15 of the first capacitor element 20 so that the lower end of the first extension bus bar 161 is connected to the lower portion of the capacitor element 20. [ And is contacted with the sprayed surface 25. The second extension busbar 162 is coupled to the second terminal 42 and passes through the hollow core 15 of the first capacitor element 20 so that the lower end of the second extension busbar 162 is connected to the upper portion of the second capacitor element 20. [ And is contacted with the irradiation surface 125.

The upper portions of the extension bus bars 161 and 162 are fixed to the circular deck 30 together with the second terminal (N pole terminal 42) and are bent and downward to a position corresponding to the hollow core 15 (N pole terminal, 42) is connected to the circular deck (30, Deck) made of plastic and is electrically connected to the second terminal (N pole) by being fixed to the lower part of the extended universal bus bar The size of the capacitor element 20 to be assembled and the size of the capacitor element 20 to be assembled are changed according to the size and the specification of the capacitor element 20 to be assembled after the integrated bus bar 90 and the general- (Length) first and second extension bus bars 161 and 162 are assembled to the lower portion of the universal bus bar 90.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but on the contrary, &Lt; RTI ID = 0.0 &gt; and / or &lt; / RTI &gt;

It is to be understood that the appended claims are intended to supplement the understanding of the invention and should not be construed as limiting the scope of the appended claims.

10: Metal case
15: hollow core
20: Capacitor element
25: Lower slope
30: Round Deck
40, 41, 42: first and second terminals,
70: Lower insulating base
80: Insulating member
50: 1st Busbar
60: Extension booth bar

Claims (8)

delete delete delete delete In the lead-wire hollow core-inserted cylindrical capacitor,
A hollow normal metal case 10 in which a lower portion and a side wall are closed and an upper portion is opened;
A capacitor element 20 embedded in the metal case 10 and having a hollow core 15 formed by winding a dielectric film up and down;
A circular deck 30 fixed to the upper portion of the metal case 10;
First and second terminals (41, 42) exposed to the deck (30, Deck) and electrically connected to the capacitor element (20);
A lower insulating base 70 made of a plastic material for insulating the bottom of the metal case 10 and the lower portion of the capacitor element 20;
An insulative interposing part 80 of a flexible plastic material which is located inside the metal case 10 and insulates the device 20 from the inner wall of the metal case 10;
An insulating filling resin (not shown) that solidifies and fills the outer space of the capacitor element 20 and the insulating interiors 80;
A short bus bar 50 electrically connected to the first terminal 41 (P pole) of the deck 30 (Deck) and making contact with the upper surface of the capacitor 20;
And an extension bus bar 60 electrically connected to the second terminal 42 and the N pole and having a lower end penetrating the hollow core 15 and contacting the lower surface of the capacitor element 20, ;
And,

The extension bus bar 60 is fixed to the circular deck 30 together with the second terminal (N-pole terminal 42), and is bent so that the general bus bar 60, which is downwardly extended at a position corresponding to the hollow core 15 And is electrically connected to the second terminal 42 (N pole) by being fixed to the lower portion of the bus bar 90,
After the second terminal (N-pole terminal, 42) and the universal bus bar (90) are integrally produced by insert injection into the circular deck (30)
An extension bus bar 60 of a size (length) corresponding to the width of the capacitor element 20 according to the size and specification (type) of the width of the capacitor element 20 to be assembled is formed on the lower portion of the general bus bar 90 Respectively,

The lower insulating base 70
A bottom surface 71 which is in contact with the upper surface of the bottom of the metal case 10,
And a side skirt plate 73 extending vertically upwardly around the periphery of the bottom surface 71,
Wherein the lower insulation base (70) further comprises a center protruding rod (75) inserted in the center of the hollow core (15) of the capacitor element (20).
In the lead-wire hollow core-inserted cylindrical capacitor,
A hollow normal metal case 10 in which a lower portion and a side wall are closed and an upper portion is opened;
A capacitor element 20 embedded in the metal case 10 and having a hollow core 15 formed by winding a dielectric film up and down;
A circular deck 30 fixed to the upper portion of the metal case 10;
First and second terminals (41, 42) exposed to the deck (30, Deck) and electrically connected to the capacitor element (20);
A lower insulating base 70 made of a plastic material for insulating the bottom of the metal case 10 and the lower portion of the capacitor element 20;
An insulative interposing part 80 of a flexible plastic material which is located inside the metal case 10 and insulates the device 20 from the inner wall of the metal case 10;
An insulating filling resin (not shown) that solidifies and fills the outer space of the capacitor element 20 and the insulating interiors 80;
A short bus bar 50 electrically connected to the first terminal 41 (P pole) of the deck 30 (Deck) and making contact with the upper surface of the capacitor 20;
And an extension bus bar 60 electrically connected to the second terminal 42 and the N pole and having a lower end penetrating the hollow core 15 and contacting the lower surface of the capacitor element 20, ;
And,

Wherein a stopper (35) for designating an interpolation limit of the metal case (10) is formed inwardly on the inner wall of the circular deck (30).
In the lead-wire hollow core-inserted cylindrical capacitor,
A hollow normal metal case 10 in which a lower portion and a side wall are closed and an upper portion is opened;
A circular deck 30 fixed to the upper portion of the metal case 10;
A first capacitor element 20 embedded in the metal case 10 and formed by winding a dielectric film and having a hollow core 15 formed up and down;
A second capacitor element (120) having a hollow core (115) formed in the metal case (10) and formed by winding a dielectric film thereon;
First and second terminals (41, 42) exposed to the deck (30, Deck) and electrically connected to the first and second capacitor elements (20, 120);
A lower insulating base 70 made of a plastic material for insulating the bottom of the metal case 10 and the lower portion of the second capacitor element 120;
An insulative interposing part 80 made of a flexible plastic material which is positioned inside the metal case 10 and insulates the devices 20 and 120 from the inner wall of the metal case 10;
An insulating filling resin (not shown) that solidifies and fills the outer space of the capacitor element 20 and the insulating interiors 80;
A first shorting bus bar 51 electrically connected to the first terminal 41 of the deck 30 and contacting the upper surface of the capacitor element 20;
Is electrically connected to the first terminal 41 of the deck 30 or the upper surface of the first capacitor element 20 and passes through the outer peripheral surface of the first and second capacitor elements 20 and 120 A second outer extension bus bar 152 extending from the second outer extension bus bar to contact the lower thermal spraying surface 121 of the second capacitor element 120;
And the lower end thereof is in contact with the lower surface (25) of the capacitor element (20) through the hollow core (15) of the first capacitor element (20) A bus bar 161;
The upper end of which is coupled to the second terminal 42 and penetrates through the hollow core 15 of the first capacitor element 20 and the lower end thereof contacts the upper slope 125 of the second capacitor element 20. [ Two extension bus bars 162;
Wherein the lead-wire hollow core-inserted cylindrical capacitor is formed of a metal.
8. The method of claim 7,
The upper portions of the extension bus bars 161 and 162 are fixed to the circular deck 30 together with the second terminal (N-pole terminal 42) and bent to a position (deck center) corresponding to the hollow core 15 And is electrically connected to the second terminal 42 (N-pole) by being fixed to the lower portion of the universal bus bar 90 extending downward,
After the second terminal (N-pole terminal, 42) and the universal bus bar (90) are integrally produced by insert injection into the circular deck (30)
The first and second extension bus bars 161 and 162 having a size (length) corresponding to the width of the capacitor element 20 according to the size and specification (type) of the capacitor element 20 to be assembled, And is assembled to a lower portion of the bus bar (90).

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