CN212750625U

CN212750625U - Lead structure for electrolytic capacitor

Info

Publication number: CN212750625U
Application number: CN202021786476.XU
Authority: CN
Inventors: 燕勇
Original assignee: Dazhou Jinlianfu Electronic Technology Co ltd
Current assignee: Dazhou Jinlianfu Electronic Technology Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-19
Anticipated expiration: 2030-08-25

Abstract

The utility model provides a lead structure for electrolytic capacitor relates to lead technical field for electrolytic capacitor. The lead structure for the electrolytic capacitor comprises a lead main body, a supporting plate, a limiting column and a conductive fixing seat. The lead main part includes first screw hole, link, spread groove, ring groove and passes through the breach. The conductive fixing seat comprises a first mounting groove and a second mounting groove. The connecting groove is provided with the annular clamping groove and the through notch, so that the lead main body is conveniently fixed in the connecting groove, the contact area between the lead and the pin is increased, and the conductive efficiency is improved; and also facilitates separation of the lead body from the leads. The arrangement of the first threaded hole, the supporting plate, the limiting column and the conductive fixing seat can limit the rotation of the lead body relative to the pins; and the electrolytic capacitor can be better supported through the limiting column, so that the lead main body does not need to bear pressure, and the lead main body is prevented from being bent or broken.

Description

Lead structure for electrolytic capacitor

Technical Field

The utility model relates to a lead wire technical field for electrolytic capacitor especially relates to a lead wire structure for electrolytic capacitor.

Background

With the rapid development of electronic technology, the application range of electrolytic capacitors is also increasingly wider. The electrolytic capacitor is formed by forming a thin layer of oxide as a dielectric on the surface of a valve metal such as aluminum, tantalum, niobium, titanium, etc. by an anodic oxidation method and using the electrolyte as a cathode, and can store charges, block direct current, and have the effect of stabilizing the operation of a circuit.

The electrolytic capacitor comprises a shell, pins and a lead, wherein the pins are connected with the inside of the electrolytic capacitor, the lead is connected with the pins, and the lead is welded on the circuit board to realize electric conduction. However, the conventional lead is usually directly soldered on the top end of the pin, and the contact area between the lead and the pin is small, so that the electric conduction efficiency is low. For this reason, it is necessary to design a lead structure capable of increasing a contact area between a lead and a pin.

Disclosure of Invention

To the above situation, in order to overcome the defects of the prior art, the utility model provides a lead structure for electrolytic capacitor, which solves the technical problems that the contact area between the current lead and the pin is small and the conductive efficiency is low.

In order to achieve the above object, the utility model provides a following technical scheme:

a lead structure for an electrolytic capacitor may mainly include: lead wire main part, backup pad, spacing post and electrically conductive fixing base.

Lead wire main part, first screw hole has radially been seted up to one end, and the other end is for being columniform link. The one end that first screw hole was kept away from to the link is offered the spread groove that is used for connecting the pin, has offered ring groove on the inner wall of spread groove circumferentially, still has radially offered on the inner wall of spread groove through the breach, through breach and ring groove perpendicular intercommunication.

And the support plate is positioned in the middle section of the lead main body and is fixed on the shell of the electrolytic capacitor. The support plate has a central hole through which the lead body passes and is fixed to the support plate.

One end of the limiting column is fixed on the supporting plate.

And the conductive fixing seat is used for being connected with the circuit board. First mounting groove and second mounting groove have been seted up to the one side that electrically conductive fixing base is close to the link. The first mounting groove is used for connecting the lead main body, and the second mounting groove is used for connecting the limiting column. The conductive fixing seat is provided with a bolt matched with the first threaded hole, and the bolt is used for limiting the rotation of the lead main body relative to the conductive fixing seat.

The connecting groove is provided with the annular clamping groove and the through notch, so that the lead main body is conveniently fixed in the connecting groove, the contact area between the lead and the pin is increased, and the conductive efficiency is improved; and also facilitates separation of the lead body from the leads. The arrangement of the first threaded hole, the supporting plate, the limiting column and the conductive fixing seat can limit the rotation of the lead body relative to the pins; and the electrolytic capacitor can be better supported by the limiting column, so that the lead main body does not need to bear pressure, the lead main body is prevented from being bent or broken, and the service life of the lead main body is prolonged.

In some embodiments of the present invention, the diameter of the connecting end is larger than the diameter of the lead main body, and the connecting groove is in interference fit with the pin.

The connecting groove is in interference fit with the pins so as to ensure the reliability of connection between the connecting end and the pins.

In some embodiments of the present invention, the connecting end is provided with a V-shaped notch.

The provision of the V-shaped notches allows the pins to more easily enter the connecting slots.

In some embodiments of the present invention, the plurality of limiting posts are fixed to the supporting plate along the circumference of the lead main body at equal intervals.

The plurality of limiting columns are fixed on the supporting plate at equal intervals along the circumferential direction of the lead body, so that the relative rotation between the lead body and the pins can be better limited, and the electrolytic capacitor can be better supported.

In some embodiments of the present invention, a rubber sealing gasket is disposed between the conductive fixing seat and the housing of the electrolytic capacitor, the rubber sealing gasket is fixed on the housing of the electrolytic capacitor, and the conductive fixing seat is fixed on the rubber sealing gasket.

Rubber seal gasket's setting can play waterproof and avoid the volatile effect of electrolyte on the one hand, and on the other hand can play certain cushioning effect again.

The utility model discloses an in some embodiments, set up the second screw hole on the above-mentioned electrically conductive fixing base, the electrically conductive fixing base is transversely run through to the second screw hole. The conductive fixing seat is further provided with a nut matched with the bolt, and one end of the bolt sequentially penetrates through the second threaded hole and the first threaded hole and then is connected with the nut.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

1. the connecting groove is provided with the annular clamping groove and the through notch, so that the lead main body is conveniently fixed in the connecting groove, the contact area between the lead and the pin is increased, and the conductive efficiency is improved; and also facilitates separation of the lead body from the leads. The arrangement of the first threaded hole, the supporting plate, the limiting column and the conductive fixing seat can limit the rotation of the lead body relative to the pins; and the electrolytic capacitor can be better supported by the limiting column, so that the lead main body does not need to bear pressure, the lead main body is prevented from being bent or broken, and the service life of the lead main body is prolonged.

2. Rubber seal gasket's setting can play waterproof effect on the one hand, and on the other hand can play certain cushioning effect again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an electrolytic capacitor according to an embodiment of the present invention;

fig. 2 is a schematic structural view illustrating a connection end connected to a pin according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a lead main body and a pin according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of the position IV in FIG. 2;

fig. 5 is a partial enlarged view of the position v in fig. 2.

Icon: 100-electrolytic capacitor, 110-shell, 111-core, 113-sealing plug, 115-pin, 116-limiting block, 117-graphite radiating plate, 130-lead body, 131-first threaded hole, 132-connecting end, 133-connecting groove, 134-annular clamping groove, 135-passing notch, 136-V-shaped notch, 150-supporting plate, 151-central hole, 170-limiting column, 190-conductive fixing seat, 191-first mounting groove, 192-second mounting groove, 193-bolt, 195-second threaded hole, 197-nut and 210-rubber sealing gasket.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present invention, it should be understood that the terms "central," "lateral," "length," "upper," "vertical," "top," "inner," "outer," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features through another feature not in direct contact. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1-3, the present embodiment provides an electrolytic capacitor 100, which includes a housing 110, a core 111, a sealing plug 113 and pins 115. The pins 115 include a positive pin and a negative pin, and it is apparent that the positive pin and the negative pin should be butted against the positive lead and the negative lead, respectively. The pin 115 is flat at one end and cylindrical at the other end. The flat end of the pin 115 is connected to the core 111, and a stopper 116 is fixed to the outer side of the cylindrical end of the pin 115. The housing 110 has a graphite heat sink plate 117 fixed to the top end thereof. The sealing plug 113, the core 111 and the pins 115 are located within the housing 110.

Referring to fig. 1 to 5, in the present embodiment, a lead structure for an electrolytic capacitor is provided, and a positive pin and a negative pin of the electrolytic capacitor 100 can be connected to the lead structure for the electrolytic capacitor, respectively. The lead structure for electrolytic capacitors may mainly include: the lead body 130, the support plate 150, the limiting column 170 and the conductive fixing seat 190.

The lead body 130 has a first threaded hole 131 radially opened at one end and a cylindrical connecting end 132 at the other end. The connecting end 132 is provided with a connecting groove 133 for connecting the pin 115 at one end away from the first threaded hole 131, an annular groove 134 is circumferentially provided on an inner wall of the connecting groove 133, and a through notch 135 is further radially provided on the inner wall of the connecting groove 133 and vertically communicated with the annular groove 134 through the notch 135.

And a support plate 150 positioned at the middle of the lead body 130 and fixed to the case 110 of the electrolytic capacitor 100. The support plate 150 has a center hole 151, and the lead body 130 passes through the center hole 151 and is fixed to the support plate 150.

One end of the limiting column 170 is fixed on the supporting plate 150.

And a conductive fixing base 190 for connecting with a circuit board (not shown). The conductive fixing seat 190 has a first mounting groove 191 and a second mounting groove 192 formed on a side thereof adjacent to the connecting end 132. The first mounting groove 191 is used for connecting the lead body 130, and the second mounting groove 192 is used for connecting the position-limiting column 170. The conductive anchor block 190 is configured with a bolt 193 that mates with the first threaded aperture 131, the bolt 193 serving to limit rotation of the lead body 130 relative to the conductive anchor block 190.

The contact area between the conductive fixing base 190 and the circuit board is larger than the contact area between the lead body 130 and the circuit board, which is beneficial to the shock resistance of the electrolytic capacitor 100.

The connecting groove 133 is provided with the annular clamping groove 134 and the through notch 135, so that the lead body 130 is conveniently fixed in the connecting groove 133, the contact area between the lead and the pin 115 is increased, and the conductive efficiency is improved; and also facilitates separation of the lead body 130 from the leads 115. The arrangement of the first threaded hole 131, the support plate 150, the limiting column 170 and the conductive fixing seat 190 can fix the lead body 130 on a circuit board to limit the rotation of the lead body 130 relative to the pin 115; and the electrolytic capacitor 100 can be better supported by the limiting column 170, so that the lead main body 130 does not need to bear pressure, the lead main body 130 is prevented from being bent or broken, and the service life of the lead main body 130 is prolonged.

More specifically, the conductive fixing base 190 is a rectangular parallelepiped, and the length of the conductive fixing base 190 is greater than the diameter of the outer shell 110. The length of the conductive fixing seat 190 is greater than the diameter of the housing 110, so that the two ends of the conductive fixing seat 190 can be welded on the circuit board, and the electrolytic capacitor 100 can lie on the circuit board, thereby saving space.

Specifically, the diameter of the connecting end 132 is larger than the diameter of the lead body 130, and the connecting groove 133 is interference-fitted with the lead 115. The connecting groove 133 is interference-fitted with the lead 115 to ensure the reliability of the connection between the connecting terminal 132 and the lead 115.

Specifically, the connecting end 132 is provided with a V-shaped notch 136. The provision of the V-shaped notch 136 allows the pin 115 to more easily enter the attachment slot 133.

Specifically, the plurality of stopper posts 170 are fixed to the support plate 150 at equal intervals in the circumferential direction of the lead body 130. The plurality of limiting columns 170 are fixed on the support plate 150 along the circumferential direction of the lead body 130 at equal intervals, so that the electrolytic capacitor 100 can be better supported while the relative rotation between the lead body 130 and the lead 115 is better limited.

Specifically, a rubber gasket 210 is disposed between the conductive holder 190 and the case 110 of the electrolytic capacitor 100, the rubber gasket 210 is fixed to the case 110 of the electrolytic capacitor 100, and the conductive holder 190 is fixed to the rubber gasket 210. Rubber seal gasket 210's setting can play waterproof and avoid the volatile effect of electrolyte on the one hand, and on the other hand can play certain cushioning effect again.

Specifically, the conductive fixing seat 190 is provided with a second threaded hole 195, and the second threaded hole 195 transversely penetrates through the conductive fixing seat 190. The conductive fixing base 190 is further provided with a nut 197 matched with the bolt 193, and one end of the bolt 193 passes through the second threaded hole 195 and the first threaded hole 131 in sequence and then is connected with the nut 197.

The lead structure for the electrolytic capacitor has the working principle that:

the pin 115 is rotated to align the limiting block 116 on the pin 115 with the through notch 135, the pin 115 is pushed into the connecting groove 133 along the through notch 135, and then the pin 115 or the lead main body 130 is rotated to rotate the limiting block 116 in the annular groove 134, so that the limiting block 116 and the through notch 135 are dislocated to limit the movement of the lead main body 130 along the vertical direction. One end of the lead body 130 with the first threaded hole 131 is inserted into the first mounting groove 191 on the conductive fixing seat 190, the limiting column 170 is inserted into the second mounting groove 192, one end of the bolt 193 sequentially passes through the second threaded hole 195 and the first threaded hole 131, and then the nut 197 is screwed into the end of the bolt 193 exposed from the conductive fixing seat 190 to fix the lead body 130, so that the lead body 130 and the lead 115 are prevented from rotating relatively, and the lead 115 is prevented from being separated from the connecting groove 133. The upper side or other side of the conductive fixing seat 190 is soldered to the circuit board.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lead structure for an electrolytic capacitor, comprising:

one end of the lead main body is radially provided with a first threaded hole, and the other end of the lead main body is a cylindrical connecting end; one end, far away from the first threaded hole, of the connecting end is provided with a connecting groove for connecting a pin, the inner wall of the connecting groove is circumferentially provided with an annular clamping groove, the inner wall of the connecting groove is also radially provided with a through notch, and the through notch is vertically communicated with the annular clamping groove;

the support plate is positioned in the middle section of the lead main body and is fixed on a shell of the electrolytic capacitor; the support plate is provided with a central hole, and the lead body penetrates through the central hole and is fixed on the support plate;

one end of the limiting column is fixed on the supporting plate;

the conductive fixing seat is used for connecting with the circuit board; a first mounting groove and a second mounting groove are formed in one side, close to the connecting end, of the conductive fixing seat; the first mounting groove is used for connecting the lead main body, and the second mounting groove is used for connecting the limiting column; the conductive fixing seat is provided with a bolt matched with the first threaded hole, and the bolt is used for limiting the lead body to rotate relative to the conductive fixing seat.

2. The lead structure for electrolytic capacitors as claimed in claim 1, wherein the connecting end has a diameter larger than that of the lead body, and the connecting groove is interference-fitted to the lead.

3. The lead structure for electrolytic capacitors as claimed in claim 2, wherein said connection terminal is provided with a V-shaped notch.

4. The lead structure for electrolytic capacitors as claimed in claim 1, wherein a plurality of the stopper posts are fixed to the support plate at equal intervals in the circumferential direction of the lead body.

5. The lead structure for electrolytic capacitors as claimed in claim 1, wherein a rubber gasket is disposed between the conductive holder and the case of the electrolytic capacitor, the rubber gasket is fixed to the case of the electrolytic capacitor, and the conductive holder is fixed to the rubber gasket.

6. The lead structure for electrolytic capacitors as claimed in any one of claims 1 to 5, wherein the conductive holder is formed with a second threaded hole, the second threaded hole extending transversely through the conductive holder; the conductive fixing seat is further provided with a nut matched with the bolt, and one end of the bolt sequentially penetrates through the second threaded hole and the first threaded hole and then is connected with the nut.