Capacitor protection device and capacitor

Abstract

The present invention discloses a capacitor protection device and a capacitor, which relates to the technical field of capacitors; it includes a shell and a capacitor; the capacitor is located inside the shell, and external electrodes are respectively arranged at both ends of the capacitor; pins are respectively arranged at both ends of the outside of the shell, and a positioning plate for connecting the pins is arranged on the inner wall of the shell, and a wavy connecting plate is installed at one end of the positioning plate in the direction of the shell opening, and an inner plate is installed on the connecting plate, and the inner plate is against the outer electrode of the capacitor; support columns located at each corner of the shell are installed inside the shell, and a cover body is arranged on the shell; a cross bar is connected between the support columns, and two opposite locking rods are installed on the cross bar, and a primary spring is connected between the locking rods. The device can provide external support and shock absorption for the capacitor, and can also quickly replace the capacitor when it is damaged, reduce the difficulty of operation, and reduce the loss of the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitors, and in particular to a capacitor protection device and a capacitor. Background Art

[0002] A capacitor consists of two conductors close to each other with a non-conductive insulating medium in between. When a voltage is applied between the two plates of a capacitor, the capacitor will store charge. The capacitance of a capacitor is numerically equal to the ratio of the charge on one conductive plate to the voltage between the two plates. Capacitors play an important role in circuits such as tuning, bypassing, coupling, and filtering. With the rapid development of electronic information technology, the replacement speed of digital electronic products is getting faster and faster. The production and sales of consumer electronic products, mainly flat-screen TVs, laptops, digital cameras, etc., continue to grow, driving the growth of the capacitor industry.

[0003] Chip capacitors are small surface mount capacitors used in electronic devices and are commonly found in electronic circuits. They can be used to filter signals, store energy, or buffer transient currents. They are small in size and widely used. They can be directly attached to circuit boards to improve integration and reliability. Chip capacitors are made of ceramic dielectric diaphragms with printed electrodes stacked in a staggered manner. After a one-time high-temperature sintering, a ceramic chip is formed. A metal layer is then sealed at both ends of the chip to form a monolithic structure, so it is also called a monolithic capacitor.

[0004] When installing chip capacitors, they are usually first attached to the corresponding position on the circuit board, and then soldered at the electrodes at both ends of the chip capacitors. While fixing the chip capacitors, the circuit connection is also achieved. After long-term use, chip capacitors are likely to be damaged and need to be replaced. The existing replacement method requires manual operation. First, melt the solder at one end, and then preliminarily separate the first connection end without damaging the other connection end, and then melt and separate the second connection end before replacing it. This requires very delicate operations and has a high failure rate. Summary of the invention

[0005] The purpose of the present invention is to provide a capacitor protection device and a capacitor to solve the problems raised in the above background technology. A capacitor protection device that can be directly installed on a circuit board is proposed, which can not only provide continuous protection for the capacitor during long-term use, but also reduce the difficulty of capacitor replacement and increase the service life of the circuit board.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A capacitor protection device and a capacitor, comprising a shell and a capacitor; the capacitor is located inside the shell, and external electrodes are respectively provided at both ends of the capacitor; pins are respectively provided at both ends of the outside of the shell, and a positioning plate for connecting the pins is provided on the inner wall of the shell, and a wavy connecting plate is installed at one end of the positioning plate in the direction of the shell opening, and an inner plate is installed on the connecting plate, and the inner plate is against the outer electrode of the capacitor; support columns located at each corner of the shell are installed inside the shell, and a cover body is provided on the shell; a cross bar is connected between the support columns, and a locking structure is installed on the cross bar, and the locking structure includes two locking rods rotatably installed on the cross bar, and a primary spring is connected between the locking rods; through grooves are respectively opened on both sides of the cover body, and one end of the locking rod close to the inside of the shell is located on the surface of the capacitor, and the other end of the locking rod close to the outside of the shell is inserted into the corresponding through groove;

[0008] A shock absorbing structure is arranged inside the shell, and the shock absorbing structure wraps and fixes the capacitor from multiple angles to reduce the forced vibration of the capacitor.

[0009] As a further solution of the present invention: a plurality of secondary springs are connected between the positioning plate and the inner pole plate.

[0010] As a further solution of the present invention: a control strip is slidably installed in the through groove, the control strip is located on the outside of the locking rod, and a side of the control strip away from the locking rod protrudes out of the through groove.

[0011] As a further solution of the present invention: the cover body is provided with limiting grooves located at both ends of the through groove, and connecting columns are rotatably installed at both ends of the control strip, one end of the connecting column is connected to the limiting column, and the limiting column is located in the limiting groove, and the distance between the limiting column and the connecting column is smaller than the distance between the diagonal point of the control strip and the connecting column.

[0012] As a further solution of the present invention: the shock absorbing structure includes a support plate installed inside the shell, a primary spring is connected between the support plate and the shell, a buffer pad made of elastic material is arranged on the support plate, and the capacitor is placed on the buffer pad.

[0013] As a further solution of the present invention: the shock absorbing structure also includes a pressure plate, the pressure plate is connected to the inner wall of the cover body through a secondary spring, and the pressure plate abuts against the surface of the capacitor.

[0014] As a further solution of the present invention: a plurality of three-stage springs are respectively installed on the two side walls of the shell, the three-stage springs are connected to the side plates located inside the shell, and one end of the side plate close to the cross bar is inclined in the direction of the three-stage spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The above capacitor protection device and capacitor are used. The device uses a shell to protect the capacitor. The shell has pins that can be welded on the circuit board instead of the capacitor. The capacitor itself is placed inside the shell. The circuit is connected by the contact between the outer electrode and the inner plate. The device can provide shock absorption and support for the capacitor in a very small size. At the same time, a simple structure is used to achieve the sealing and limiting of the capacitor. After installation, the capacitor can be firmly fixed in the shell to ensure the effective connection of the circuit.

[0017] By using the above capacitor protection device and capacitor, the capacitor of the device only uses the contact between the inner plate and the outer electrode to achieve circuit conduction. Therefore, when the capacitor is damaged, it is not necessary to melt the solder to remove the capacitor. Instead, the cover can be opened, the capacitor can be taken out through simple operation, and a new capacitor can be put in, so that the circuit board can be repaired quickly and efficiently, the impact of capacitor damage on the circuit board is reduced, the probability of circuit board damage caused by operational errors is reduced, and the service life of the circuit board is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the appearance structure of the capacitor protection device and the capacitor.

[0019] Figure 2 It is a schematic diagram of the front structure of the capacitor protection device and the capacitor.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of a capacitor protection device and a capacitor.

[0021] Figure 4 It is a structural schematic diagram of a capacitor protection device and a side plate and a locking structure in a capacitor.

[0022] Figure 5 It is a structural schematic diagram of a capacitor protection device and the matching locking structure and cover body in the capacitor.

[0023] Figure 6 It is a schematic diagram of the partially enlarged structure of the capacitor protection device and the locking structure and control strip in the capacitor.

[0024] In the figure: 1-shell; 11-support column; 12-cross bar; 2-pin; 21-positioning plate; 22-connecting plate; 23-secondary spring; 24-inner plate; 3-cover; 31-through groove; 32-limiting groove; 4-shock absorption structure; 41-primary spring; 42-support plate; 43-buffer pad; 44-pressure plate; 45-secondary spring; 46-side plate; 47-third-stage spring; 5-locking structure; 51-locking rod; 52-primary spring; 53-control strip; 54-limiting column; 541-connecting column; 6-capacitor; 61-outer electrode. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 6 In an embodiment of the present invention, a capacitor 6 protection device and a capacitor 6 are provided, comprising a housing 1 and a capacitor 6; the capacitor 6 is located inside the housing 1, and two ends of the capacitor 6 are respectively provided with external electrodes 61; two ends of the outside of the housing 1 are respectively provided with pins 2, and a positioning plate 21 connected to the pins 2 is provided on the inner wall of the housing 1, and a wavy connecting plate 22 is installed on one end of the positioning plate 21 located in the opening direction of the housing 1, and an inner plate 24 is installed on the connecting plate 22, and the inner plate 24 is against the outer electrode 61 of the capacitor 6; the housing 1 is provided with support columns 11 at each corner of the housing 1, and the housing 1 is provided with a cover 3; a cross bar 12 is connected between the support columns 11, and a locking structure 5 is installed on the cross bar 12, and the locking structure 5 includes two locking rods 51 rotatably installed on the cross bar 12, and a primary spring 52 is connected between the locking rods 51; through grooves 31 are respectively provided on both sides of the cover 3, and one end of the locking rod 51 close to the inside of the housing 1 is located on the surface of the capacitor 6, and one end of the locking rod 51 close to the outside of the housing 1 is inserted into the corresponding through groove 31;

[0027] A shock absorbing structure 4 is disposed inside the housing 1 , and the shock absorbing structure 4 wraps and fixes the capacitor 6 from multiple angles to reduce the forced vibration of the capacitor 6 .

[0028] The device wraps the capacitor 6 with a shell 1, and pins 2 are provided at both ends of the outside of the shell 1. The shell 1 can be placed on a circuit board, and the pins 2 are used to replace the outer electrodes 61 of the capacitor 6 to complete the welding of the circuit. The pins 2, the positioning plate 21, the connecting plate 22 and the inner plate 24 are all made of the same material as the outer electrode 61 to ensure a good conduction effect. The inner plate 24 is connected through the wavy connecting plate 22 and is suspended inside the shell 1, so it can move within a certain range. It can be used to reduce the vibration of the capacitor 6 in the direction of the pin 2, and can also meet the installation requirements of capacitors 6 of different sizes within a certain range, making it more flexible and convenient to use.

[0029] The capacitor 6 of the device is fixed in the housing 1, and the locking structure 5 is used to fix the capacitor 6 and the cover body 3 at the same time. The primary spring 52 expands the distance between the two locking rods 51 so that there is a certain angle between the locking rod 51 and the cross bar 12, and the two ends of the locking rod 51 are inclined to the inside and outside respectively. Before installation, use fingers or tweezers or other tools to clamp the protruding end of the locking rod 51 from the outside and press inward, so that the end of the locking rod 51 located on the inside is retracted, so that the upper part of the housing 1 is empty and the capacitor 6 can be placed. After that, the locking rod 51 is released, and the locking rod 51 rotates spontaneously, pressing the capacitor 6 from above the capacitor 6, so that the capacitor 6 can be fixed in the housing 1, ensuring that the capacitor 6 is in an effectively connected state with the circuit board.

[0030] When installing the cover body 3, press the clamping rod inward again. After the cover body 3 is buckled along the supporting rods, the position of the through groove 31 and the locking rod 51 are located in the same plane. The locking rod 51 loses the pressure from the outside and rotates. The outside is inserted into the through groove 31 to clamp the main cover body 3 to prevent the cover body 3 from falling off. At the same time, the inside blocks the capacitor 6 to prevent the capacitor 6 from shaking or falling off.

[0031] If the capacitor 6 is damaged and needs to be replaced later, the locking rod 51 can be squeezed inward from the through grooves 31 on both sides, so that the locking rod 51 rotates, the cover body 3 can be removed, and then the capacitor 6 can be removed for replacement. The device can be installed in a small space on the circuit board, fit the capacitor 6, and protect the capacitor 6. It has a certain degree of shock absorption and buffering effect, and can effectively reduce the damage to the capacitor 6 caused by the vibration brought by the circuit board installation environment; at the same time, the device can also provide a certain external support effect to avoid damage to the capacitor 6 caused by external forces. The device is simple and convenient to operate. Compared with the replacement method that requires first melting the solder at both ends of the capacitor 6 and disassembling the two ends in turn, the device does not need to touch the welding position when replacing the capacitor 6, and can quickly complete the replacement, which significantly reduces the difficulty of operation, improves the convenience of use, reduces the probability of circuit board damage during the maintenance process, and extends the service life of the circuit board.

[0032] As another embodiment of the present invention, please refer to Figure 2 and Figure 3, a plurality of secondary springs 23 are connected between the positioning plate 21 and the inner plate 24. The secondary springs 23 are used to provide support for the inner plate 24. Since the pins 2, the positioning plate 21, the connecting plate 22 and the inner plate 24 all need to maintain a good conductive effect, elasticity is not the main consideration for selecting the material of this conductive structure. The use of a plurality of secondary springs 23 for auxiliary support can ensure that the inner plate 24 maintains sufficient contact with the capacitor 6, maintains good conductivity, and provides a certain buffer against vibration. The use of the secondary springs 23 can reduce the external force on the connecting plate 22, reduce fatigue damage caused by possible vibration, and extend the service life of the connecting plate 22 and the entire device.

[0033] See also Figure 1 , Figure 5 and Figure 6 A control strip 53 is slidably mounted in the through slot 31. The control strip 53 is located outside the locking rod 51, and a side of the control strip 53 away from the locking rod 51 protrudes outside the through slot 31. The control strip 53 is located in the through slot 31 and protrudes outside. When the cover 3 needs to be removed, the locking rod 51 can be pushed outward by pressing the control strip 53 inward, and no additional tool is needed to be inserted into the through slot 31 to complete the operation.

[0034] See also Figure 1 , Figure 5 and Figure 6 The cover body 3 is provided with limiting grooves 32 at both ends of the through groove 31. The two ends of the control strip 53 are rotatably mounted with connecting posts 541. One end of the connecting post 541 is connected to the limiting post 54. The limiting post 54 is located in the limiting groove 32. The distance between the limiting post 54 and the connecting post 541 is smaller than the distance between the diagonal part of the control strip 53 and the connecting post 541. The connecting post 541 is located at both ends of the control strip 53 and is connected to the limiting post 54. The limiting post 54 is stuck in the limiting groove 32 to prevent the control strip 53 from falling off from the through groove 31. The device is used for external protection of the capacitor 6, so the overall size is small and the space is limited. The use of the limiting post 54 can enable the control strip 53 to obtain a larger activity space in the limited installation space, so that the clamping rod can be fully squeezed out when the cover body 3 is disassembled. The spacing between the limiting column 54 and the connecting column 541 is small, and the control bar 53 cannot be rotated to the long side. Therefore, the length range of the fiber paper that can rotate at both ends of the control rod plus the length of the limiting groove 32 is the range in which the control bar 53 itself can move inward and outward.

[0035] See also Figure 1 , Figure 2 and Figure 3The shock absorbing structure 4 includes a support plate 42 installed inside the housing 1, a primary spring 41 is connected between the support plate 42 and the housing 1, a buffer pad 43 made of elastic material is arranged on the support plate 42, and the capacitor 6 is placed on the buffer pad 43. The support plate 42 is located at the bottom of the housing 1, and the primary spring 41 at the bottom provides support for the support plate 42, and the buffer pad 43 with a certain elastic effect on the surface works together to support the capacitor 6 while cooperating with the clamping rod to clamp the capacitor 6.

[0036] See also Figure 1 and Figure 2 The shock absorbing structure 4 further includes a pressing plate 44, which is connected to the inner wall of the cover body 3 through a secondary spring 45, and the pressing plate 44 abuts against the surface of the capacitor 6. The pressing plate 44 is fixed inside the cover body 3, and is connected through the secondary spring 45. The clamping rod is only used to limit the position of the cover body 3 and the capacitor 6. In normal use, the clamping rod with a fixed height position is not used to limit the capacitor 6, but the capacitor 6 is clamped by the upper pressing plate 44 and the bottom support plate 42, so as to achieve the purpose of fixing the capacitor 6, and at the same time, the capacitor 6 can have a certain shock absorbing effect when encountering small up and down vibrations.

[0037] See also Figure 1 and Figure 4 , a plurality of three-stage springs 47 are respectively installed on the two side walls of the housing 1, and the three-stage springs 47 are connected to the side plate 46 located inside the housing 1, and one end of the side plate 46 close to the cross bar 12 is inclined in the direction of the three-stage spring 47. The three-stage spring 47 cooperates with the side plate 46 to clamp the capacitor 6 from both sides to fix the capacitor 6, and the upper end of the side plate 46 is inclined, so that the capacitor 6 is easier to put in without scratching. It should be noted that the primary spring 41, the secondary spring 45 and the three-stage spring 47 used in the present device are only limited to elastic structures, and the contents of the attached drawings are only used as a display of available effects. The shapes of the primary spring 41, the secondary spring 45 and the three-stage spring 47 should not be limited by the shapes of the attached drawings, and can also be replaced by spring leaves in actual use, or spring leaves with folded parts can be directly used as support plates 42, pressure plates 44 and side plates 46, etc., so as to achieve the effect of adapting to deformation requirements within a limited structural space.

[0038] The working principle of the present invention is:

[0039] The device uses a shell 1 to hold a capacitor 6, and the two ends of the capacitor 6 are provided with external electrodes 61, and the two ends of the outer shell 1 are provided with pins 2, and the pins 2 are connected to the positioning plate 21 located inside the shell 1, and the positioning plate 21 is connected to the inner plate 24 through the wavy connecting plate 22, and the inner plate 24 is attached to the surface of the outer electrode 61 of the capacitor 6, so that an effective circuit can be formed, and the pins 2 of the shell 1 are fixed to the circuit board by welding, so that the internal capacitor 6 can be guaranteed to be effective; above the shell 1, a clamping rod with a relative position is provided through a cross bar 12, and the clamping rod can rotate, and a primary spring 52 is connected between the two relative clamping rods, and the primary spring 52 props the two clamping rods apart, so that the inner end of the clamping rod can block the capacitor 6, and the outer end can clamp the cover 3. The device can effectively protect the capacitor 6, provide support, and reduce the damage to the capacitor 6 caused by vibration, and does not affect the normal use of the circuit. The device can also complete the replacement of the damaged capacitor 6 in a very convenient way, reduce the difficulty of operation, and reduce the damage rate of the circuit board.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A capacitor protection device, comprising a housing and a capacitor; characterized in that: The capacitor is located inside the shell, and external electrodes are respectively provided at both ends of the capacitor; pins are respectively provided at both ends of the outside of the shell, and a positioning plate for connecting the pins is provided on the inner wall of the shell, and a wavy connecting plate is installed at one end of the positioning plate located in the direction of the shell opening, and an inner electrode plate is installed on the connecting plate, and the inner electrode plate is against the outer electrode of the capacitor; support columns located at each corner of the shell are installed inside the shell, and a cover body is provided on the shell; a cross bar is connected between the support columns, and a locking structure is installed on the cross bar, and the locking structure includes two locking rods rotatably installed on the cross bar, and a primary spring is connected between the locking rods; through grooves are respectively opened on both sides of the cover body, and the end of the locking rod close to the inside of the shell is located on the surface of the capacitor, and the end of the locking rod close to the outside of the shell is inserted into the corresponding through groove; A plurality of secondary springs are connected between the positioning plate and the inner pole plate; a control strip is slidably installed in the through groove, the control strip is located on the outside of the locking rod, and a side of the control strip away from the locking rod protrudes outside the through groove; the cover body is provided with limiting grooves located at both ends of the through groove, and connecting columns are rotatably installed at both ends of the control strip, one end of the connecting column is connected to the limiting column, the limiting column is located in the limiting groove, and the distance between the limiting column and the connecting column is less than the distance between the diagonal part of the control strip and the connecting column; A shock-absorbing structure is arranged inside the shell, and the shock-absorbing structure wraps and fixes the capacitor from multiple angles to reduce the forced vibration of the capacitor; the shock-absorbing structure includes a support plate installed inside the shell, a primary spring is connected between the support plate and the shell, a buffer pad made of elastic material is arranged on the support plate, and the capacitor is placed on the buffer pad; the shock-absorbing structure also includes a pressure plate, which is connected to the inner wall of the cover body through a secondary spring, and the pressure plate abuts against the surface of the capacitor.

2. The capacitor protection device according to claim 1, characterized in that: A plurality of three-stage springs are respectively installed on the two side walls of the shell, and the three-stage springs are connected to the side plates located inside the shell, and one end of the side plates close to the cross bar is inclined toward the direction of the three-stage springs.

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