Surface mount type solid-liquid mixed aluminum electrolytic capacitor

Abstract

The invention belongs to the technical field of capacitors, and provides a surface-mounted solid-liquid mixed aluminum electrolytic capacitor, which comprises a pin sleeve, and the base is internally provided with the clamping assembly, and the clamping assembly is used for clamping the two pins. According to the invention, the two pin sleeves are welded on the PCB instead of two pins which are originally welded on the PCB, and the connection of the capacitor is realized through the connection of the pin sleeves, the elastic sheets and the pins; when the capacitor body is damaged, only the capacitor body needs to be pulled out upwards, the pins can be pulled out of the pin sleeves, and then a new capacitor body is installed on the base, so that the disassembly and assembly mode is relatively simple in operation and relatively high in efficiency; when the capacitor is used, only the two pin sleeves need to be subjected to spot tin welding during first-time installation, and welding spots and spot tin welding do not need to be cleaned frequently when the capacitor body is replaced later, so that the surface of the PCB is effectively prevented from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of capacitors, and in particular relates to a surface-mount solid-liquid hybrid aluminum electrolytic capacitor. Background Art

[0002] SMD solid-liquid hybrid aluminum electrolytic capacitor is a capacitor that combines the advantages of solid and liquid aluminum electrolytic capacitors. This capacitor has the advantages of solid capacitors, such as low equivalent series resistance (ESR), better thermal stability and higher reliability, and has the advantages of liquid capacitors, such as the ability to generate and repair dielectric oxide films. SMD solid-liquid hybrid aluminum electrolytic capacitors are widely used in the automotive industry.

[0003] SMD solid-liquid hybrid aluminum electrolytic capacitors usually include a capacitor body, a base, and pins, etc., and the capacitor body, base, and pins are integrated. When installing the SMD solid-liquid hybrid aluminum electrolytic capacitor, directly stick the base on the PCB board, and then spot tin the two pins to complete the installation. When disassembling, it is necessary to clean the solder joints and then remove the SMD solid-liquid hybrid aluminum electrolytic capacitor. If the capacitor body is often damaged, it is necessary to clean the solder joints first during disassembly and assembly, and then spot tin soldering. Since the capacitor body is relatively small, this operation will be relatively cumbersome and inefficient. In addition, cleaning the solder joints and spot tin soldering will cause damage to the surface of the PCB board to a certain extent, thereby affecting the use of electrical components on the entire PCB board. Summary of the invention

[0004] The purpose of the present invention is to provide a chip-type solid-liquid hybrid aluminum electrolytic capacitor, aiming to solve the technical problems in the prior art that the chip-type solid-liquid hybrid aluminum electrolytic capacitor is troublesome to disassemble and assemble, has low efficiency, and is easy to damage the PCB board.

[0005] The purpose of the present invention can be achieved through the following technical solutions: The surface-mount solid-liquid hybrid aluminum electrolytic capacitor comprises a capacitor body, two pins on the capacitor body and a base, and the capacitor also comprises: Pin sleeves, two pin sleeves are symmetrically arranged on the base, two mounting holes are provided on the base, the mounting holes are communicated with the pin sleeves, two pins pass through the mounting holes and are respectively sleeved in the two pin sleeves, and when in use, the connection of the capacitor is realized by welding the pin sleeves; A clamping component is installed in the base, and the clamping component clamps two pins.

[0006] As a preferred embodiment of the above technical solution, a spring sheet is obliquely provided on the top of the inner cavity of the pin sleeve, and the inclination direction of the spring sheet is the same as the bending direction of the pin.

[0007] As a preferred embodiment of the above technical solution, the bottom of the inner cavity of the pin sleeve is in an inclined state, so that the bending angle of the pin is always an obtuse angle.

[0008] As a preferred embodiment of the above technical solution, roller one and several roller twos are rotatably installed in the base near the pin sleeve, and the roller one and several roller twos are located at the ends of the mounting hole, and the bent part of the pin is located between roller one and several roller twos.

[0009] As a preferred embodiment of the above technical solution, the clamping assembly includes: A main splint, wherein a pit is formed on the base, and main splints are respectively installed at both ends of the pit; Connecting rods: a plurality of connecting rods are provided on opposite sides of the two main plates; A secondary splint, the other end of the connecting rod is fixed with a secondary splint, and a set of main splints and secondary splints are respectively located on both sides of a pin; Elastic parts, a plurality of elastic parts are installed between adjacent main plates and auxiliary plates; The main splint is connected to a secondary splint close to another main splint, and a connecting rod connected between the main splint and the secondary splint movably penetrates the other secondary splint.

[0010] As a preferred embodiment of the above technical solution, auxiliary slide grooves are provided on both sides of the main splint, and sliders are slidably installed in the auxiliary slide grooves. Bosses are provided at the four corners of the top of the base, and main slide grooves are provided on the sides of the bosses adjacent to the main splint, and the other end of the slider is slidably installed in the main slide groove.

[0011] As a preferred embodiment of the above technical solution, a through hole is provided on the main plate.

[0012] As a preferred embodiment of the above technical solution, elastically retractable clamping blocks are installed on the main clamping plate and the auxiliary clamping plate on one side close to the pins.

[0013] As a preferred embodiment of the above technical solution, a fixing component is installed on the boss, and the fixing component includes a screw, the screw passes through the side surface of the boss, and the screw is threadedly connected to the boss, and an arc plate is provided at one end of the screw located inside the base, and the arc plate is abutted against the surface of the capacitor body, and a plurality of bumps are provided on the side of the arc plate abutting against the capacitor body.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, two pin sleeves are welded on the PCB board instead of the original two pins being welded on the PCB board, and the connection of the capacitor is realized by connecting the pin sleeve, the spring and the pin; when the capacitor body is damaged, the capacitor body only needs to be pulled out upwards, the pins will be pulled out of the pin sleeve, and then the new capacitor body can be installed on the base, and such disassembly and assembly method is relatively simple to operate and has high efficiency; when using the capacitor, only the two pin sleeves need to be spot-tinned during the first installation, and when the capacitor body is replaced later, there is no need to frequently clean the solder joints and spot-tin welding, thereby effectively avoiding damage to the surface of the PCB board; 2. In the present invention, by making the bent portion of the pin in an obtuse angle state, in conjunction with the roller one and the plurality of rollers two, the pin can smoothly enter the pin sleeve or be pulled out from the pin sleeve during installation or removal, thereby improving the efficiency of assembly and disassembly of the capacitor body; 3. In the present invention, by moving the two main clamping plates toward each other, the main clamping plates push the auxiliary clamping plates close to the other main clamping plates, so that the adjacent main clamping plates and auxiliary clamping plates clamp the pins and fix the pins. At this time, the two main clamping plates are pulled upward, which is equivalent to replacing the original pulling out of the capacitor body with directly pulling out the pins, so that the pins are directly pulled out by force, which can effectively avoid the breakage of the connecting part between the pins and the capacitor body, thereby effectively preventing the pins from being unable to be pulled out normally, thereby improving the efficiency of disassembly and assembly of the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional plane structure of the base; Figure 3 It is a schematic diagram of the three-dimensional structure of the base section; Figure 4 for Figure 2 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the plane structure of the clamping component; Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping component; Figure 7 Schematic diagram of the main plate structure.

[0016] In the figure: 1. Capacitor body; 2. Base; 21. Boss; 211. Main slide; 22. Pit; 23. Mounting hole; 3. Pin; 4. Pin sleeve; 41. Spring piece; 5. Clamping assembly; 51. Main splint; 511. Secondary slide; 512. Slider; 513. Through hole; 52. Secondary splint; 53. Connecting rod; 54. Elastic member; 55. Clamping block; 6. Roller 1; 7. Roller 2; 8. Fixing assembly; 81. Screw; 82. Arc plate; 83. Boss. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0019] like Figure 1-Figure 3 As shown, the SMD solid-liquid hybrid aluminum electrolytic capacitor includes a capacitor body 1, two pins 3 on the capacitor body 1 and a base 2, and the capacitor also includes: The base 2 is symmetrically provided with two pin sleeves 4, and the base 2 is provided with two mounting holes 23, the mounting holes 23 are communicated with the pin sleeves 4, the two pins 3 pass through the mounting holes 23 and are respectively sleeved in the two pin sleeves 4, and when in use, the connection of the capacitor is realized by welding the pin sleeves 4; A clamping component 5 is installed in the base 2 , and the clamping component 5 clamps the two pins 3 .

[0020] Furthermore, a spring piece 41 is obliquely provided at the top of the inner cavity of the pin sleeve 4 , and the oblique direction of the spring piece 41 is the same as the bending direction of the pin 3 .

[0021] In one case of this embodiment, the pin sleeve 4 can be made of a conductive material, or other materials that can achieve capacitor connection, except for easily deformable materials, such as copper.

[0022] In actual application of this embodiment, when the capacitor body 1 and the base 2 are assembled, the two pins 3 are aligned with the two mounting holes 23, and then the capacitor body 1 is pressed downward to make the two pins 3 enter the two mounting holes 23. After being guided by the two mounting holes 23, the two pins 3 enter the two pin sleeves 4 respectively, and the spring pieces 41 abut against the pins 3, thereby completing the assembly; when in use, the two pin sleeves 4 are welded on the PCB board to replace the original two pins 3 welded on the PCB board, and the connection of the capacitor is realized by connecting the pin sleeves 4, the spring pieces 41 and the pins 3; when the capacitor body 1 is damaged, it is only necessary to pull out the capacitor body 1 upward, the pins 3 will be pulled out from the pin sleeves 4, and then the new capacitor body 1 can be installed on the base 2, and this disassembly and assembly method is relatively simple to operate and has high efficiency; when using this capacitor, it is only necessary to spot-solder the two pin sleeves 4 during the first installation, and when the capacitor body 1 is replaced later, it is not necessary to frequently clean the solder joints and spot-solder, thereby effectively avoiding damage to the surface of the PCB board; The pin sleeve 4 wraps around the pin 3 to protect the pin 3. During the use of the capacitor, the pin 3 is not easy to break, and the capacitor body 1 is not easy to be damaged. There is no need to replace the capacitor body 1 frequently, thereby improving the use effect of the entire PCB board.

[0023] like Figure 2-Figure 4 As shown, the bottom of the inner cavity of the pin sleeve 4 is in an inclined state, so that the bending angle of the pin 3 is always an obtuse angle.

[0024] Furthermore, roller one 6 and several roller twos 7 are rotatably installed near the pin sleeve 4 in the base 2, roller one 6 and several roller twos 7 are located at the ends of the mounting hole 23, and the bent part of the pin 3 is located between roller one 6 and several roller twos 7.

[0025] In one case of this embodiment, the surfaces of roller 1 6 and roller 2 7 are both made of smooth material.

[0026] It should be noted that after pin 3 is inserted into pin sleeve 4, pin 3 is in a bent state. If capacitor body 1 is pulled upward, the bent portion of pin 3 may be blocked due to the bent state of pin 3, resulting in pin 3 being unable to be pulled out normally.

[0027] According to the above problems, in actual application of this embodiment, after the pin 3 is installed, the bent portion of the pin 3 is in a state of an obtuse angle, so that it will be relatively smooth when the pin 3 is pulled out, thereby effectively preventing the pin 3 from being unable to be pulled out normally; in addition, the upper and lower positions of the bent portion of the pin 3 are in contact with the roller 1 6 and the plurality of rollers 2 7 respectively, and during the process of pulling out the pin 3, the roller 1 6 and the plurality of rollers 2 7 play an auxiliary role, making the pin 3 smoother during the process of pulling out, thereby effectively preventing the pin 3 from breaking in the pin sleeve 4, causing the pin 3 to be unable to be pulled out normally take it out, thereby ensuring that the pin 3 can be taken out normally; roller one 6 and several roller twos 7 also play an auxiliary role when the pin 3 enters the pin sleeve 4, and the pin 3 can quickly and smoothly enter the pin sleeve 4 through the rolling of roller one 6 and several roller twos 7; in summary, by making the bent portion of the pin 3 in an obtuse angle state, in conjunction with roller one 6 and several roller twos 7, the pin 3 can smoothly enter the pin sleeve 4 or be pulled out from the pin sleeve 4 regardless of whether it is being installed or disassembled, thereby improving the disassembly and assembly efficiency of the capacitor body 1.

[0028] like Figure 5-Figure 7 As shown, the clamping assembly 5 includes: The main plate 51, the base 2 is provided with a pit 22, and the two ends of the pit 22 are respectively installed with the main plate 51; Connecting rods 53, a plurality of connecting rods 53 are provided on opposite sides of the two main plates 51; A secondary clamping plate 52, the other end of the connecting rod 53 is fixed with the secondary clamping plate 52, and a set of main clamping plates 51 and secondary clamping plates 52 are respectively located on both sides of a pin 3; Elastic members 54, a plurality of elastic members 54 are installed between adjacent main plates 51 and auxiliary plates 52; The main plate 51 is connected to a secondary plate 52 adjacent to another main plate 51 , and a connecting rod 53 connected between the main plate 51 and the secondary plate 52 movably passes through another secondary plate 52 .

[0029] Furthermore, auxiliary slide grooves 511 are provided on both sides of the main splint 51, and sliders 512 are slidably installed in the auxiliary slide grooves 511. Bosses 21 are provided at the four corners of the top of the base 2. A main slide groove 211 is provided on the side of the boss 21 adjacent to the main splint 51, and the other end of the slider 512 is slidably installed in the main slide groove 211.

[0030] In one case of this embodiment, the elastic member 54 can be a spring or other elastically retractable member. When the main plate 51 moves upward and horizontally, it is restricted by the slider 512, and the main plate 51 is always connected to the bosses 21 on both sides.

[0031] It should be noted that since the connection between the capacitor body 1 and the pin 3 is relatively fragile, if the capacitor body 1 is directly pulled out, the connection between the pin 3 and the capacitor body 1 may break, resulting in the pin 3 being unable to be pulled out normally. In this case, it is necessary to replace the new base 2 and pin sleeve 4, which violates the original intention of the present invention and increases the difficulty of later maintenance of the capacitor body 1.

[0032] According to the above problems, in actual application, the present embodiment moves the two main plates 51 toward each other, so that the main plate 51 pushes the auxiliary plate 52 close to the other main plate 51, so that the adjacent main plates 51 and the auxiliary plates 52 clamp the pin 3, so that the pin 3 is fixed. At this time, the two main plates 51 are pulled upward, which is equivalent to replacing the original pulling out of the capacitor body 1 with directly pulling out the pin 3, so that the pin 3 is directly pulled out by force, so that the connection part between the pin 3 and the capacitor body 1 can be effectively prevented from being broken, thereby effectively preventing the pin 3 from being unable to be pulled out normally, and it is not easy to replace the new base 2 and the pin sleeve 4; After the capacitor body 1 and the two pins 3 are pulled out, the two main clamping plates 51 are loosened, and the two main clamping plates 51 fall back to their original positions. Through the rebound ability of the elastic member 54, the two main clamping plates 51 and the two auxiliary clamping plates 52 return to their initial positions, facilitating the subsequent installation of a new capacitor body 1.

[0033] Furthermore, a through hole 513 is defined in the main plate 51 .

[0034] In one case of this embodiment, the size of the through hole 513 is only required to facilitate the insertion of tweezers.

[0035] It should be noted that since the chip capacitors are relatively small and the electrical components connected to the PCB board are relatively complex, it is inconvenient to operate them directly with hands. Currently, tweezers are generally used for operation.

[0036] In actual application of this embodiment, when moving the main clamping plate 51, the two ends of the tweezers are inserted into the through holes 513 on the two main clamping plates 51, and then the tweezers are clamped to move the two main clamping plates 51 toward each other, and then the tweezers are lifted upward to clamp the two main clamping plates 51 and the two auxiliary clamping plates 52 to move the two pins 3 upward, so that the capacitor body 1 can be easily disassembled and assembled, the disassembly and assembly efficiency is improved, and it is not easy to affect the surrounding electrical components.

[0037] like Figure 3 As shown, elastically retractable clamping blocks 55 are installed on the sides of the main clamping plate 51 and the auxiliary clamping plate 52 close to the pins 3 .

[0038] Furthermore, a fixing component 8 is installed on the boss 21, and the fixing component 8 includes a screw 81, the screw 81 passes through the side of the boss 21, and the screw 81 is threadedly connected to the boss 21, and an arc plate 82 is provided at one end of the screw 81 located inside the base 2, and the arc plate 82 is abutted against the surface of the capacitor body 1, and a plurality of protrusions 83 are provided on the side of the arc plate 82 abutting against the capacitor body 1.

[0039] In one case of this embodiment, the protrusion 83 may be a rubber block or a component made of other soft materials.

[0040] In actual application of this embodiment, during normal use, the two clamping blocks 55 clamp the pin 3 to fix the position of the pin 3, which can effectively prevent the pin 3 from shaking and prevent the connection between the pin 3 and the capacitor body 1 from breaking during normal use, thereby increasing the service life of the capacitor; in addition, the capacitor body 1 is surrounded by a plurality of arc plates 82 to fix the position of the capacitor body 1 and prevent the capacitor body 1 from shaking, thereby preventing the connection between the pin 3 and the capacitor body 1 from breaking, thereby increasing the service life of the capacitor; the protrusion 83 allows the capacitor body 1 to be buffered to prevent severe vibration from causing the connection between the capacitor body 1 and the pin 3 to break.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A surface-mount solid-liquid hybrid aluminum electrolytic capacitor, comprising a capacitor body (1), two pins (3) on the capacitor body (1), and a base (2), characterized in that: The capacitor further comprises: Pin sleeves (4), two pin sleeves (4) are symmetrically arranged on the base (2), two mounting holes (23) are provided on the base (2), the mounting holes (23) are communicated with the pin sleeves (4), two pins (3) pass through the mounting holes (23) and are respectively sleeved in the two pin sleeves (4), and when in use, connection of the capacitor is achieved by welding the pin sleeves (4); A clamping component (5), wherein the base (2) is provided with the clamping component (5), and the clamping component (5) clamps two pins (3).

2. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 1, characterized in that: A spring sheet (41) is obliquely arranged at the top of the inner cavity of the pin sleeve (4), and the inclination direction of the spring sheet (41) is the same as the bending direction of the pin (3).

3. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 1, characterized in that: The bottom of the inner cavity of the pin sleeve (4) is in an inclined state, so that the bending angle of the pin (3) is always an obtuse angle.

4. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 3, characterized in that: A roller 1 (6) and a plurality of roller 2s (7) are rotatably mounted in the base (2) at positions close to the pin sleeve (4); the roller 1 (6) and the plurality of roller 2s (7) are located at the ends of the mounting hole (23); and the bent portion of the pin (3) is located between the roller 1 (6) and the plurality of roller 2s (7).

5. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 1, characterized in that: The clamping assembly (5) comprises: A main splint (51), wherein a recess (22) is formed on the base (2), and the main splints (51) are respectively mounted at both ends of the recess (22); Connecting rods (53), a plurality of connecting rods (53) are provided on opposite sides of the two main plates (51); A secondary clamping plate (52), the other end of the connecting rod (53) is fixed with the secondary clamping plate (52), and a set of main clamping plates (51) and secondary clamping plates (52) are respectively located on both sides of a pin (3); Elastic members (54), a plurality of elastic members (54) being installed between adjacent main plates (51) and auxiliary plates (52); The main splint (51) is connected to a secondary splint (52) close to another main splint (51), and a connecting rod (53) connecting the main splint (51) and the secondary splint (52) movably passes through the other secondary splint (52).

6. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 5, characterized in that: Auxiliary slide grooves (511) are provided on both sides of the main splint (51), and a slider (512) is slidably installed in the auxiliary slide groove (511). Bosses (21) are provided at the four corners of the top of the base (2), and a main slide groove (211) is provided on the side of the boss (21) adjacent to the main splint (51), and the other end of the slider (512) is slidably installed in the main slide groove (211).

7. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 5, characterized in that: The main plate (51) is provided with a through hole (513).

8. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 6, characterized in that: The main clamping plate (51) and the auxiliary clamping plate (52) are both installed with elastically retractable clamping blocks (55) on one side close to the pin (3).

9. The SMD solid-liquid hybrid aluminum electrolytic capacitor according to claim 8, characterized in that: A fixing assembly (8) is mounted on the boss (21), the fixing assembly (8) comprising a screw (81), the screw (81) passing through the side surface of the boss (21), and the screw (81) being threadedly connected to the boss (21), one end of the screw (81) being located inside the base (2) being provided with an arc plate (82), the arc plate (82) being in contact with the surface of the capacitor body (1), and a plurality of protrusions (83) being provided on the side of the arc plate (82) in contact with the capacitor body (1).

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