SMD solid-liquid hybrid aluminum electrolytic capacitors

Abstract

The present invention belongs to the technical field of capacitors, and provides a chip-type solid-liquid hybrid aluminum electrolytic capacitor, comprising: a pin sleeve; a clamping assembly, wherein the clamping assembly is installed in the base, and the clamping assembly clamps two pins. In the present invention, the connection of the capacitor is achieved by welding two pin sleeves to a PCB board instead of the original two pins welded on the PCB board, and the pin sleeves, springs and pins are connected; when the capacitor body is damaged, it is only necessary to pull the capacitor body upwards, and the pins will be pulled out of the pin sleeves, and then the new capacitor body can be installed on the base. This disassembly and assembly method is relatively simple to operate and has high efficiency; when using the capacitor, it is only necessary to spot-solder the two pin sleeves during the first installation. When the capacitor body is replaced later, there is no need to frequently clean the solder joints and spot-solder, thereby effectively avoiding damage to the surface of the PCB board.

Description

Technical Field

[0001] The present 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 capacitors combine the advantages of both solid and liquid aluminum electrolytic capacitors. They offer the advantages of solid capacitors, such as low equivalent series resistance (ESR), improved thermal stability, and higher reliability, while also possessing the advantages of liquid capacitors, such as the ability to form 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, and the capacitor body, base, and pins are integrated. When installing the SMD solid-liquid hybrid aluminum electrolytic capacitor, the base is directly attached to the PCB board, and then the two pins are spot-tinned to complete the installation. When disassembling, the solder joints need to be cleaned and then the SMD solid-liquid hybrid aluminum electrolytic capacitor is removed. If the capacitor body is often damaged, the solder joints need to be cleaned first during disassembly and assembly, and then spot-tinned. Since the capacitor body is relatively small, this operation will be relatively cumbersome and inefficient. In addition, cleaning the solder joints and spot-tinning 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 prone to damage to the PCB board.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A surface-mount solid-liquid hybrid aluminum electrolytic capacitor includes a capacitor body, two pins on the capacitor body, and a base. The capacitor also includes:

[0007] Pin sleeves, two pin sleeves are symmetrically provided on the base, and two mounting holes are provided on the base. The mounting holes are connected to the pin sleeves, and two pins pass through the mounting holes and are respectively sleeved in the two pin sleeves. When in use, the capacitor connection is achieved by welding the pin sleeves;

[0008] A clamping assembly is installed in the base, and the clamping assembly clamps two pins.

[0009] As a preferred embodiment of the above technical solution, a spring piece is obliquely provided on the top of the inner cavity of the pin sleeve, and the oblique direction of the spring piece is the same as the bending direction of the pin.

[0010] 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.

[0011] As a preferred embodiment of the above technical solution, roller one and several roller twos are rotatably installed near the pin sleeve in the base, and the roller one and several roller twos are located at the end of the mounting hole, and the bent part of the pin is located between roller one and several roller twos.

[0012] As a preferred embodiment of the above technical solution, the clamping assembly includes:

[0013] A main plate, wherein a pit is formed on the base, and main plates are respectively installed at both ends of the pit;

[0014] Connecting rods: a number of connecting rods are provided on opposite sides of the two main plates;

[0015] 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;

[0016] Elastic parts, a plurality of elastic parts are installed between adjacent main plates and auxiliary plates;

[0017] The main plate is connected to a secondary plate close to another main plate, and a connecting rod connected between the main plate and the secondary plate movably passes through the other secondary plate.

[0018] 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.

[0019] As a preferred embodiment of the above technical solution, a through hole is provided on the main plate.

[0020] As a preferred embodiment of the above technical solution, elastically retractable clamping blocks are installed on the side of the main clamping plate and the auxiliary clamping plate close to the pins.

[0021] As a preferred embodiment of the above technical solution, a fixing component is installed on the boss, and the fixing component includes a screw, which passes through the side surface of the boss and is threadedly connected to the boss. 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. A plurality of bumps are provided on the side of the arc plate abutting against the capacitor body.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, two pin sleeves are welded to the PCB board instead of the original two pins being welded to the PCB board. The connection of the capacitor is achieved through the pin sleeves, springs and pins. When the capacitor body is damaged, the capacitor body can be pulled out upwards to remove the pins from the pin sleeves. Then a new capacitor body can be installed on the base. This disassembly and assembly method is relatively simple and efficient. When using the capacitor, only the two pin sleeves need to be spot-tinned during the first installation. When the capacitor body is replaced later, there is no need to frequently clean the solder joints and spot-tin. This effectively prevents damage to the PCB board surface.

[0024] 2. In the present invention, by making the bent portion of the pin in an obtuse angle state, in conjunction with the first roller and the plurality of second rollers, the pin can smoothly enter or be pulled out of the pin sleeve during installation or removal, thereby improving the efficiency of assembly and disassembly of the capacitor body;

[0025] 3. In the present invention, by moving the two main plates toward each other, the main plate pushes the auxiliary plate close to the other main plate, so that the adjacent main plates and auxiliary plates clamp the pins and fix the pins. At this time, the two main 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 connection part between the pins and the capacitor body, thereby effectively preventing the pins from being unable to be pulled out normally, thereby improving the disassembly and assembly efficiency of the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 Schematic diagram of the cross-sectional plane structure of the base;

[0028] Figure 3 Schematic diagram of the three-dimensional structure of the base section;

[0029] Figure 4 for Figure 2 A in the middle is an enlarged structural diagram;

[0030] Figure 5 It is a schematic diagram of the planar structure of the clamping component;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping component;

[0032] Figure 7 Schematic diagram of the main plywood structure.

[0033] In the picture:

[0034] 1. Capacitor body; 2. Base; 21. Boss; 211. Main slide; 22. Recess; 23. Mounting hole; 3. Pin; 4. Pin sleeve; 41. Spring clip; 5. Clamping assembly; 51. Main splint; 511. Auxiliary slide; 512. Slider; 513. Through hole; 52. Auxiliary 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. Bump. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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.

[0036] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0037] like Figure 1-Figure 3 As shown, the chip-type 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:

[0038] Pin sleeves 4, two pin sleeves 4 are symmetrically provided on the base 2, and two mounting holes 23 are provided on the base 2. The mounting holes 23 are connected to the pin sleeves 4. The two pins 3 pass through the mounting holes 23 and are respectively sleeved in the two pin sleeves 4. When in use, the connection of the capacitor is achieved by welding the pin sleeves 4;

[0039] A clamping component 5 is installed in the base 2 , and the clamping component 5 clamps the two pins 3 .

[0040] Furthermore, a spring piece 41 is obliquely provided on 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 .

[0041] In one case of this embodiment, the pin sleeve 4 can be made of a conductive material, or other materials capable of achieving capacitor connection, in addition to easily deformable materials, such as copper.

[0042] When the capacitor body 1 is damaged, the capacitor body 1 only needs to be pulled out, 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. This disassembly and assembly method is relatively simple and efficient. When using the capacitor, only the two pin sleeves 4 need to be spot-tinned during the first installation. When the capacitor body 1 is replaced later, there is no need to frequently clean the solder joints and spot-tin the two pin sleeves 4, thereby effectively preventing damage to the PCB surface.

[0043] 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.

[0044] 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.

[0045] 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 end of the mounting hole 23, and the bent part of the pin 3 is located between roller one 6 and several roller twos 7.

[0046] In one case of this embodiment, the surfaces of roller 1 6 and roller 2 7 are both made of smooth material.

[0047] It should be noted that after pin 3 is inserted into pin sleeve 4, pin 3 is in a bent state. If the capacitor body 1 is pulled upward, the bent part of pin 3 may be blocked due to the bent state, resulting in pin 3 being unable to be pulled out normally.

[0048] In view of 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 when the pin 3 is pulled out, it will be relatively smooth, thereby effectively avoiding 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. In 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 in the process of pulling out, thereby effectively avoiding the pin 3 from breaking in the pin sleeve 4, resulting in the pin 3 being unable to be pulled out normally Take it out, thereby ensuring that pin 3 can be taken out normally; roller one 6 and several roller twos 7 also play an auxiliary role when 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 part of pin 3 in an obtuse angle state, cooperating with roller one 6 and several roller twos 7, 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.

[0049] like Figure 5-Figure 7 As shown, the clamping assembly 5 includes:

[0050] The main plate 51 is provided with a recess 22 on the base 2, and the main plates 51 are respectively installed at both ends of the recess 22;

[0051] Connecting rods 53, a plurality of connecting rods 53 are provided on opposite sides of the two main plates 51;

[0052] A secondary splint 52 is fixed to the other end of the connecting rod 53, and a set of main splints 51 and secondary splints 52 are respectively located on both sides of a pin 3;

[0053] Elastic members 54 , a plurality of elastic members 54 are installed between adjacent main plates 51 and auxiliary plates 52 ;

[0054] The main plate 51 is connected to a sub-plate 52 adjacent to the other main plate 51 , and a connecting rod 53 connecting the main plate 51 and the sub-plate 52 movably passes through the other sub-plate 52 .

[0055] Furthermore, auxiliary grooves 511 are provided on both sides of the main splint 51, and a slider 512 is slidably installed in the auxiliary grooves 511. Bosses 21 are provided at the four corners of the top of the base 2. A main 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 groove 211.

[0056] In one case of this embodiment, the elastic member 54 can be a spring or other elastically expandable component. When the main splint 51 moves upward and horizontally, it is restricted by the slider 512, and the main splint 51 is always connected to the bosses 21 on both sides.

[0057] 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, a new base 2 and pin sleeve 4 need to be replaced, which violates the original intention of the present invention and increases the difficulty of later maintenance of the capacitor body 1.

[0058] In view of the above problem, 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 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 directly pulling out the pin 3 instead of pulling out the capacitor body 1. The pin 3 is directly pulled out by force, which can effectively avoid the connection part between the pin 3 and the capacitor body 1 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 pin sleeve 4.

[0059] After pulling out the capacitor body 1 and the two pins 3, loosen the two main plates 51, and the two main plates 51 fall back to their original positions. The elastic member 54 has a rebound ability, so that the two main plates 51 and the two auxiliary plates 52 return to their initial positions, making it convenient for the subsequent installation of a new capacitor body 1.

[0060] Furthermore, a through hole 513 is defined in the main plate 51 .

[0061] In one case of this embodiment, the size of the through hole 513 only needs to be large enough to facilitate the insertion of tweezers.

[0062] It should be noted that since 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.

[0063] In actual application of this embodiment, when moving the main splint 51, the two ends of the tweezers are inserted into the through holes 513 on the two main splints 51, and then the tweezers are clamped to move the two main splints 51 toward each other. Then, the tweezers are lifted upward to clamp the two main splints 51 and the two auxiliary splints 52 to move the two pins 3 upward. This makes it convenient to disassemble and assemble the capacitor body 1, improves the disassembly and assembly efficiency, and is not easily affected by surrounding electrical components.

[0064] like Figure 3As shown, elastically retractable clamping blocks 55 are installed on the side of the main clamping plate 51 and the auxiliary clamping plate 52 close to the pin 3.

[0065] 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. The screw 81 is located inside the base 2 and has an arc plate 82 at one end. The arc plate 82 is against the surface of the capacitor body 1, and a number of bumps 83 are provided on the side of the arc plate 82 that is against the capacitor body 1.

[0066] In one aspect of this embodiment, the protrusion 83 may be a rubber block or a component made of other soft materials.

[0067] 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 improving the service life of the capacitor; in addition, the capacitor body 1 is surrounded by a number of arc plates 82 to fix the position of the capacitor body 1, preventing the capacitor body 1 from shaking, thereby preventing the connection between the pin 3 and the capacitor body 1 from breaking, and improving 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.

[0068] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

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 opened 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, the connection of the capacitor is achieved by welding the pin sleeves (4); A clamping assembly (5), wherein the base (2) is provided with a clamping assembly (5), and the clamping assembly (5) clamps two pins (3); 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); The clamping assembly (5) comprises: A main splint (51), wherein a recess (22) is formed on the base (2), and main splints (51) are respectively installed 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 splint (52), the other end of the connecting rod (53) is fixed with the secondary splint (52), and a set of main splints (51) and secondary splints (52) are respectively located on both sides of a pin (3); Elastic members (54), wherein a plurality of elastic members (54) are installed between adjacent main plates (51) and auxiliary plates (52); The main splint (51) is connected to a secondary splint (52) adjacent 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); Auxiliary chutes (511) are provided on both sides of the main splint (51), and a slider (512) is slidably installed in the auxiliary chutes (511). Bosses (21) are provided at the four corners of the top of the base (2), and a main chute (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 chute (211).

2. The chip-type 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.

3. The chip-type solid-liquid hybrid aluminum electrolytic capacitor according to claim 2, characterized in that: Roller 1 (6) and a plurality of rollers 2 (7) are rotatably mounted in the base (2) at positions close to the pin sleeve (4). The roller 1 (6) and the plurality of rollers 2 (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 rollers 2 (7).

4. The chip-type solid-liquid hybrid aluminum electrolytic capacitor according to claim 1, characterized in that: A through hole (513) is provided on the main splint (51).

5. The chip-type solid-liquid hybrid aluminum electrolytic capacitor according to claim 1, characterized in that: The main splint (51) and the auxiliary splint (52) are both provided with elastically retractable clamping blocks (55) on one side close to the pin (3).

6. The chip-type solid-liquid hybrid aluminum electrolytic capacitor according to claim 5, characterized in that: A fixing assembly (8) is mounted on the boss (21), and the fixing assembly (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) abuts against the surface of the capacitor body (1), and a plurality of bumps (83) are provided on the side of the arc plate (82) abutting against the capacitor body (1).

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