CN212848058U

CN212848058U - Pin-fixed patch type aluminum electrolytic capacitor

Info

Publication number: CN212848058U
Application number: CN202022217062.1U
Authority: CN
Inventors: 曾伟城; 潘宁华
Original assignee: Shenzhen Guolan Electronic Technology Co ltd
Current assignee: Shenzhen Guolan Electronic Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-03-30
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a SMD aluminum electrolytic capacitor that pin is fixed, include: the capacitor comprises a capacitor body, a base, an adhesive layer and two electrode leads which are respectively connected with the capacitor body; the base is provided with two lead holes and a lead groove communicated with the lead holes; the two lead slots are mutually isolated and extend in opposite directions; the lead groove includes: the square connecting groove and the amplifying groove are communicated with the square connecting groove, and the amplifying groove is a trapezoidal groove with a small upper part and a large lower part; the cross-section of the electrode lead includes: the adhesive layer is adhered to the square connecting groove and the square portion. Because the trapezoidal part is matched with the amplifying groove, the lower surface of the trapezoidal part is basically level with the lower surface of the base, and the base of the patch type aluminum electrolytic capacitor is prevented from being placed on a PCB board to incline and deviate.

Description

Pin-fixed patch type aluminum electrolytic capacitor

Technical Field

The utility model relates to an aluminum electrolytic capacitor technical field especially relates to a SMD aluminum electrolytic capacitor of pin fixed.

Background

The patch type aluminum electrolytic capacitor is characterized in that a pin type aluminum electrolytic capacitor is arranged on a base for patch, wherein two leads of the aluminum electrolytic capacitor respectively penetrate through the base and are prevented from being in a lead groove of the base, and the lead can be placed in the lead groove of the base, so that the patch operation can be realized, and the application is convenient. The lead of the existing patch type aluminum electrolytic capacitor is directly bent and placed in a lead groove, but the lead is used as a metal wire and cannot be bent flatly, the lead can protrude from the lead groove, and the base of the patch type aluminum electrolytic capacitor is placed on a PCB (printed circuit board) to easily cause the patch type aluminum electrolytic capacitor to incline, so that the position deviation is caused, and the final welding effect is influenced.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the lead is basically flush with the lead slot after being arranged in the lead slot, so that the inclination and the position deviation of the base of the chip type aluminum electrolytic capacitor when being placed on a PCB are avoided.

The technical scheme of the utility model as follows: a chip type aluminum electrolytic capacitor with fixed pins comprises: the capacitor comprises a capacitor body, a base, an adhesive layer and two electrode leads connected with the capacitor body; the base is provided with two lead holes and a lead groove communicated with the lead holes; the two lead slots are mutually isolated and extend in opposite directions; the lead groove includes: the square connecting groove and the amplifying groove are communicated with the square connecting groove, and the amplifying groove is a trapezoidal groove with a small upper part and a large lower part; the cross-section of the electrode lead includes: the adhesive layer is adhered to the square connecting groove and the square portion. The electrode lead penetrates through the lead hole, then the electrode lead is bent, the square part of the motor lead is pressed into the square connecting groove, and the adhesive layer can bond the square part in the square connecting groove, so that the motor lead is effectively prevented from shaking. Because the trapezoidal part is matched with the amplifying groove, the lower surface of the trapezoidal part is basically level with the lower surface of the base, and the base of the surface mount type aluminum electrolytic capacitor is prevented from being placed on a PCB board to incline and deviate; and trapezoidal portion with enlarge the groove and match, can avoid the motor lead wire to appear rocking equally. Furthermore, the lower surface of the trapezoid part has a large area, so that the area of the upper tin is also large, and the welding strength can be effectively improved.

Further, the bottom of trapezoidal portion is provided with the indent. The indent is used for increasing the surface area of electrode lead wire to can increase the area of going up tin, promote the intensity of welding.

Furthermore, the joint of the amplifying groove and the bottom surface of the base is a round angle. There can be the clearance between fillet and the trapezoidal portion, molten tin water alright in order to climb the side of trapezoidal portion to can increase the area of going up tin, promote welded intensity.

Further, the square portion is in interference fit with the square connecting groove. Interference fit can give way shape spread groove and be connected with square groove, avoids electrode lead to take place the skew.

With the adoption of the scheme, the utility model provides a SMD aluminum electrolytic capacitor that pin is fixed, the adhesive layer can bond square portion in square spread groove to effectively avoided the motor lead wire to appear rocking. Because the trapezoidal part is matched with the amplifying groove, the lower surface of the trapezoidal part is basically level with the lower surface of the base, and the base of the surface mount type aluminum electrolytic capacitor is prevented from being placed on a PCB board to incline and deviate; and trapezoidal portion with enlarge the groove and match, can avoid the motor lead wire to appear rocking equally. Furthermore, the lower surface of the trapezoid part has a large area, so that the area of the upper tin is also large, and the welding strength can be effectively improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of another view angle of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 5 is a schematic structural view of a lead slot;

fig. 6 is a schematic structural view of an electrode lead.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 6, the present invention provides a surface mount type aluminum electrolytic capacitor with fixed leads, including: the capacitor comprises a capacitor body 10, a base 20, an adhesive layer 40, two electrode leads 30 connected with the capacitor body 10; the base 20 is provided with two lead holes 21 and lead grooves communicated with the lead holes 21; the two lead slots are mutually isolated and extend in opposite directions; the lead groove includes: the square connecting groove 22 and the amplifying groove 23 are communicated with the square connecting groove 22, and the amplifying groove 23 is a trapezoidal groove with a small upper part and a large lower part; the cross-section of the electrode lead 30 includes: a square part 31, a trapezoid part 32 connected with the square part 31, wherein the trapezoid part 32 is matched with the enlarged groove 23, and the adhesive layer 40 bonds the square connecting groove 22 and the square part 31. The electrode lead 30 passes through the lead hole 21, then the electrode lead 30 is bent, the square part 31 of the motor lead is pressed into the square connecting groove 22, and the adhesive layer 40 can bond the square part 31 in the square connecting groove 22, so that the motor lead is effectively prevented from shaking. Because the trapezoidal part 32 is matched with the amplifying groove 23, the lower surface of the trapezoidal part 32 is basically level with the lower surface of the base 20, and the base 20 of the chip aluminum electrolytic capacitor is prevented from being placed on a PCB board to incline and deviate; moreover, the trapezoidal part 32 is matched with the amplifying groove 23, and the shaking of the motor lead can be avoided. Further, the lower surface of the trapezoidal portion 32 has a large area, so that the area of the upper tin is also large, and the welding strength can be effectively improved.

In the present embodiment, the bottom of the trapezoidal portion 32 is provided with a pressing groove 33. The indent 33 serves to increase the surface area of the electrode lead 30, so that the area of the upper tin can be increased, and the welding strength can be improved.

In this embodiment, the connection between the enlarged groove 23 and the bottom surface of the base 20 is rounded. There will be the clearance between fillet and the trapezoidal portion 32, molten tin water alright climb up the side of trapezoidal portion 32 to can increase the area of going up tin, promote welded intensity.

In this embodiment, the square portion 31 is interference-fitted with the square coupling groove 22. The interference fit allows the square coupling groove 22 to be coupled to the square groove, thereby preventing the electrode lead 30 from being shifted.

To sum up, the utility model provides a SMD aluminum electrolytic capacitor that pin is fixed, the adhesive layer can bond square portion in square spread groove to effectively avoided the motor lead wire to appear rocking. Because the trapezoidal part is matched with the amplifying groove, the lower surface of the trapezoidal part is basically level with the lower surface of the base, and the base of the surface mount type aluminum electrolytic capacitor is prevented from being placed on a PCB board to incline and deviate; and trapezoidal portion with enlarge the groove and match, can avoid the motor lead wire to appear rocking equally. Furthermore, the lower surface of the trapezoid part has a large area, so that the area of the upper tin is also large, and the welding strength can be effectively improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A surface mount type aluminum electrolytic capacitor with fixed pins is characterized by comprising: the capacitor comprises a capacitor body, a base, an adhesive layer and two electrode leads connected with the capacitor body; the base is provided with two lead holes and a lead groove communicated with the lead holes; the two lead slots are mutually isolated and extend in opposite directions; the lead groove includes: the square connecting groove and the amplifying groove are communicated with the square connecting groove, and the amplifying groove is a trapezoidal groove with a small upper part and a large lower part; the cross-section of the electrode lead includes: the adhesive layer is adhered to the square connecting groove and the square portion.

2. The pin-fixed chip aluminum electrolytic capacitor according to claim 1, wherein a pressing groove is formed at a bottom of the trapezoidal portion.

3. The pin-fixed chip aluminum electrolytic capacitor as claimed in claim 1, wherein the joint of the amplification chamber and the bottom surface of the base is a rounded corner.

4. The pin-fixed chip aluminum electrolytic capacitor according to claim 1, wherein the square portion is in interference fit with the square connecting groove.