Rectifier bridge packaging structure

Abstract

The utility model discloses a rectifier bridge packaging structure which comprises a placing frame, the left side of the placing frame is fixedly connected with a limiting plate, a rectifier bridge chip is placed in the placing frame, the left side of the rectifier bridge chip is fixedly connected with a pin, the bottom of the pin is placed at the top of the limiting plate, and the outer side of the placing frame is provided with a packaging mechanism. By using the packaging mechanism, the connection strength of the pins and the rectifier bridge chip can be increased, and the problems that the plastic packaging process is common in the packaging of the rectifier bridge, internal elements of the rectifier bridge generate heat due to electric energy conversion when the rectifier bridge works, and thermal expansion coefficients of plastic packaging materials and the internal elements are different are solved. The problems that thermal stress can be generated due to continuous thermal expansion and cold contraction, and the thermal stress can cause cracking of connecting welding spots of pins and chips, so that the electrical performance is affected, faults are caused in serious cases, and a rectifier bridge cannot work normally are solved, and the advantage of improving connection is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifier bridge technical field, concretely is a rectifier bridge packaging structure. BACKGROUND

[0002] The rectifier bridge is a device commonly used in electronic circuit, and the main function is to convert AC into DC, and it plays an indispensable role in various electronic devices. Most electronic devices in daily life, such as mobile phone chargers, computer power adapters, etc., need to convert the AC power provided by the power grid into DC power to power the electronic components inside the device. The rectifier bridge plays a key role in this process. It can convert the alternating positive and negative waveform of AC into a single direction of DC, meeting the requirements of electronic devices for power polarity. For example, the circuit board inside the mobile phone needs a stable DC power supply to drive the chip, screen and other components. The rectifier bridge converts the mains power into DC power suitable for mobile phones. In the industrial field, many devices also rely on rectifier bridges to obtain DC power. For example, a DC motor speed regulation system needs to convert AC into DC, and by adjusting the size of the DC voltage, the speed of the motor can be controlled. In addition, in the process of electroplating, electrolysis and other industrial production, stable DC power provided by the rectifier bridge is also needed to ensure the smooth progress of the production process and the stability of product quality.

[0003] The prior art has the following defects: In the rectifier bridge packaging, the plastic packaging process is common, and when the rectifier bridge is working, the internal components generate heat due to the conversion of electrical energy. Because the thermal expansion coefficients of the plastic packaging material and the internal components are different, continuous thermal expansion and contraction will generate thermal stress, which will cause the pin and chip connection solder joints to crack, thereby affecting the electrical performance, and in severe cases, causing failure, making the rectifier bridge unable to work normally. UTILITY MODEL CONTENT

[0004] To solve the problems raised in the background art, the utility model aims to provide a rectifier bridge packaging structure, which has the advantages of improving the connection, solving the problem that in the rectifier bridge packaging, the plastic packaging process is common, and when the rectifier bridge is working, the internal components generate heat due to the conversion of electrical energy. Because the thermal expansion coefficients of the plastic packaging material and the internal components are different, continuous thermal expansion and contraction will generate thermal stress, which will cause the pin and chip connection solder joints to crack, thereby affecting the electrical performance, and in severe cases, causing failure, making the rectifier bridge unable to work normally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rectifier bridge packaging structure, comprising a placing rack, a limiting plate is fixedly connected to the left side of the placing rack, a rectifier bridge chip is placed in the inside of the placing rack, a pin is fixedly connected to the left side of the rectifier bridge chip, the bottom of the pin is placed on the top of the limiting plate, and a packaging mechanism is arranged on the outside of the placing rack.

[0006] As the utility model prefers, the packaging mechanism includes the lower cover plate, the inner side of the lower cover plate is fixedly connected with the outer side of the placing rack, the top of the lower cover plate is provided with the upper cover plate, the top of the lower cover plate is provided with the plug-in slot, the plug-in slot is plug-in connected with the plug-in block, the top of the plug-in block is fixedly connected with the bottom of the upper cover plate, the top of the upper cover plate is communicated with the injection molding pipe, the left side of the upper cover plate and the lower cover plate is fixedly connected with the clamping plate, the number of the clamping plate is two, and the inner side of the clamping plate is clamped with the outer side of the needle pin.

[0007] As the utility model prefers, the left side of the placing rack is provided with the rubber sleeve, and the inner side of the rubber sleeve is sleeved with the outer side of the needle pin.

[0008] As the utility model prefers, the inner side of the clamping plate is provided with the recess, and the inner wall of the recess is plug-in connected with the outer side of the rubber sleeve.

[0009] As the utility model prefers, the left side of the injection molding pipe is provided with the exhaust pipe, and the bottom of the exhaust pipe is communicated with the top of the upper cover plate.

[0010] As the utility model prefers, the surface of the needle pin is provided with the square groove, and the square groove is located at the left side of the placing rack.

[0011] As the utility model prefers, the inner side of the upper cover plate and the lower cover plate is fixedly connected with the long strip, and the number of the long strip is several.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The utility model discloses a packaging mechanism is used, can increase the connecting strength of needle pin and rectifier bridge chip, solves the problem that the plastic packaging process is more common in the rectifier bridge packaging, and the internal element of rectifier bridge generates heat due to electric energy conversion when working, and because the thermal expansion coefficient of plastic packaging material and internal element is different, the thermal stress is generated by continuous thermal expansion and cold shrinkage, which causes the cracking of the connecting solder joint of the pin and the chip, and further affects the electrical performance, and seriously causes the fault, so that the rectifier bridge cannot work normally.

[0014] 2, the utility model discloses a packing mechanism is set up, through the assembly of upper cover plate and lower cover plate, the upper cover plate is moved to the direction of lower cover plate, through the accurate cooperation of the insertion block of upper cover plate bottom and the insertion slot of lower cover plate top, realize the close joint of upper cover plate and lower cover plate, form a relatively closed packing space, after the joint of upper and lower cover plate is completed, the injection tube that upper cover plate top is connected is communicated and injects packing material to the inside, in view of the square groove that the needle foot surface is preset, in the injection process, packing material will flow into square groove in the trend, by the synergies of packing material and square groove, after packing material hardens, can form the firm restraint to needle foot, thereby significantly enhance the connection strength of needle foot and rectifier bridge chip welding point, ensure the stability of electrical connection of rectifier bridge in the use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the half cutaway view of upper cover plate of the utility model;

[0017] Figure 3 It is the perspective view of the utility model stand;

[0018] Figure 4 It is the bottom view of upper cover plate of the utility model.

[0019] In the drawing: 1, stand;2, limit board;3, rectifier bridge chip;4, needle foot;5, packing mechanism;51, lower cover plate;52, upper cover plate;53, insertion slot;54, insertion block;55, injection tube;56, joint plate;6, rubber sleeve;7, recess;8, exhaust pipe;9, square groove;10, strip. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] As Figures 1 to 4 Indicated, the utility model provides a rectifier bridge packing structure, including stand 1, the left side fixed connection of stand 1 has limit board 2, and the inside of stand 1 is placed with rectifier bridge chip 3, and the left side fixed connection of rectifier bridge chip 3 has needle foot 4, and the bottom of needle foot 4 is placed on the top of limit board 2, and the outside of stand 1 is provided with packing mechanism 5.

[0022] Reference Figure 3The packaging mechanism 5 comprises a lower cover plate 51, the inner side of the lower cover plate 51 is fixedly connected with the outer side of the placing rack 1, the top of the lower cover plate 51 is provided with an upper cover plate 52, the top of the lower cover plate 51 is provided with a plug-in groove 53, the plug-in groove 53 is plug-in connected with a plug-in block 54, the top of the plug-in block 54 is fixedly connected with the bottom of the upper cover plate 52, the top of the upper cover plate 52 is communicated with an injection pipe 55, the left side of the upper cover plate 52 and the lower cover plate 51 is fixedly connected with a clamping plate 56, the number of the clamping plate 56 is two, and the inner side of the clamping plate 56 is clamped with the outer side of the needle pin 4.

[0023] As a technical optimization scheme of the utility model, by setting the packaging mechanism 5, the upper cover plate 52 is moved towards the lower cover plate 51 through the assembly of the upper cover plate 52 and the lower cover plate 51, the plug-in block 54 at the bottom of the upper cover plate 52 is accurately matched with the plug-in groove 53 at the top of the lower cover plate 51, the close clamping of the upper cover plate 52 and the lower cover plate 51 is realized, a relatively closed packaging space is formed, after the clamping of the upper and lower cover plates 51 is completed, the injection pipe 55 communicated at the top of the upper cover plate 52 is used to inject the packaging material into the interior, in view of the fact that the square groove 9 is pre-set on the surface of the needle pin 4, in the injection process, the packaging material will flow into the square groove 9, by the cooperation of the packaging material and the square groove 9, after the packaging material is hardened, the needle pin 4 can be stably bound, thereby the connection strength of the needle pin 4 and the welding point of the rectifier bridge chip 3 is significantly enhanced, and the stability of electrical connection of the rectifier bridge in use is ensured.

[0024] Reference Figure 2 The left side of the placing rack 1 is provided with a rubber sleeve 6, and the inner side of the rubber sleeve 6 is sleeved with the outer side of the needle pin 4.

[0025] As a technical optimization scheme of the utility model, by setting the rubber sleeve 6, the rubber sleeve 6 plays an isolation role in the injection process, effectively prevents the packaging material from overflowing, and ensures the accuracy and standardization of injection.

[0026] Reference Figure 3 The inner side of the clamping plate 56 is provided with a groove 7, and the inner wall of the groove 7 is plug-in connected with the outer side of the rubber sleeve 6.

[0027] As a technical optimization scheme of the utility model, by setting the groove 7, the rubber sleeve 6 can be accurately plug-in connected with the groove 7, which facilitates accurate positioning of the needle pin 4, thereby improving the stability and reliability of the packaging structure.

[0028] Reference Figure 3 The left side of the injection pipe 55 is provided with an exhaust pipe 8, and the bottom of the exhaust pipe 8 is communicated with the top of the upper cover plate 52.

[0029] As a kind of technical optimization scheme of the utility model, by setting up exhaust pipe 8, in the injection molding process, with the help of exhaust pipe 8 can accelerate air exhaust, guarantee the smoothness of injection molding process, avoid the influence of residual air encapsulation quality.

[0030] Reference Figure 2 The surface of needle pin 4 is provided with square groove 9, and square groove 9 is located at the left side of placing rack 1.

[0031] As a kind of technical optimization scheme of the utility model, by setting up square groove 9, when injection molding, encapsulation material flows into square groove 9, and after hardening, it forms the structure that shape is complementary with square groove 9, so that encapsulation material and needle pin 4 are closely embedded, and restraint force is generated to needle pin 4, effectively limit needle pin 4 to move. In this way, the stress borne by needle pin 4 and rectifier bridge chip 3 welding point is greatly reduced, and the connection strength between the two is significantly enhanced.

[0032] Reference Figure 4 The inside of upper cover plate 52 and lower cover plate 51 is fixedly connected with long strip 10, and the number of long strip 10 is several.

[0033] As a kind of technical optimization scheme of the utility model, by setting up long strip 10, when injection molding, encapsulation material fills in the space between long strip 10. When rectifier bridge completes encapsulation, these spaces formed by long strip 10 interval constitute heat dissipation channel, help rectifier bridge to dissipate heat efficiently in the working process, and then improve its heat dissipation performance and working reliability.

[0034] The working principle and use process of the utility model: when carrying out rectifier bridge packaging operation, first, the welding connection of rectifier bridge chip 3 and pin 4 is completed, the stable and reliable electrical path between the two is ensured, after welding, the rectifier bridge chip 3 is carefully placed inside the placing rack 1, laying the foundation for subsequent packaging steps, then, the rubber sleeve 6 is accurately sleeved on the pin 4, then, the bottom of the pin 4 is stably placed on the top of the limiting plate 2, the limiting plate 2 is used to preliminarily position the pin 4, then, the rubber sleeve 6 is inserted into the groove 7 in the clamping plate 56, so that the rubber sleeve 6 is tightly embedded in the groove 7, the position of the pin 4 is further fixed, then, the upper cover plate 52 and the lower cover plate 51 are assembled, the upper cover plate 52 is moved towards the lower cover plate 51, the upper cover plate 52 bottom insertion block 54 and the lower cover plate 51 top insertion slot 53 are accurately matched, the upper cover plate 52 and the lower cover plate 51 are tightly clamped, a relatively closed packaging space is formed, after the upper and lower cover plates 51 are clamped, the injection tube 55 connected to the top of the upper cover plate 52 is used to inject the packaging material into the inside, in view of the square groove 9 preset on the surface of the pin 4, in the injection process, the packaging material will flow into the square groove 9, by the cooperation of the packaging material and the square groove 9, after the packaging material hardens, the pin 4 can be stably bound, so that the connection strength of the pin 4 and the welding point of the rectifier bridge chip 3 is significantly enhanced, the stability of the electrical connection of the rectifier bridge in the use process is ensured, at the same time, the several long strips 10 fixed inside the upper cover plate 52 and the lower cover plate 51 will make the packaging material fill in the space between the long strips 10 when injecting, after the rectifier bridge packaging is completed, the space formed by the long strips 10 is the heat dissipation channel, which is helpful for the heat dissipation of the rectifier bridge in the working process, and improves the heat dissipation performance and the reliability of the working.

[0035] In summary: the rectifier bridge packaging structure, by the cooperation of the placing rack 1, the limiting plate 2, the rectifier bridge chip 3, the pin 4 and the packaging mechanism 5, solves the problem that the plastic packaging process is more common in the rectifier bridge packaging, and the internal elements of the rectifier bridge generate heat due to the conversion of electric energy when working, because the thermal expansion coefficients of the plastic packaging material and the internal elements are different, the thermal stress caused by the continuous thermal expansion and cold contraction will cause the cracking of the pin and the chip connection welding point, and then affect the electrical performance, and in severe cases, cause failure, so that the rectifier bridge cannot work normally.

[0036] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A rectifier bridge package structure comprising a holder (1), characterized in that: The left side of the rack (1) is fixedly connected with a limiting plate (2), the inside of the rack (1) is placed with a rectifier bridge chip (3), the left side of the rectifier bridge chip (3) is fixedly connected with a pin (4), the bottom of the pin (4) is placed on the top of the limiting plate (2), and the outside of the rack (1) is provided with a packaging mechanism (5).

2. The rectifier bridge package structure of claim 1, wherein: The packaging mechanism (5) comprises a lower cover plate (51), the inner side of the lower cover plate (51) is fixedly connected with the outside of the rack (1), the top of the lower cover plate (51) is provided with an upper cover plate (52), the top of the lower cover plate (51) is provided with a plug-in slot (53), the inside of the plug-in slot (53) is plug-in connected with a plug-in block (54), the top of the plug-in block (54) is fixedly connected with the bottom of the upper cover plate (52), the top of the upper cover plate (52) is communicated with an injection tube (55), the left side of the upper cover plate (52) and the lower cover plate (51) is fixedly connected with a clamping plate (56), the number of the clamping plate (56) is two, and the inner side of the clamping plate (56) is clamped with the outside of the pin (4).

3. The rectifier bridge package structure of claim 1, wherein: The left side of the rack (1) is provided with a rubber sleeve (6), and the inside of the rubber sleeve (6) is sleeved with the outside of the pin (4).

4. The rectifier bridge package structure of claim 2, wherein: The inside of the clamping plate (56) is provided with a groove (7), and the inner wall of the groove (7) is plug-in connected with the outside of the rubber sleeve (6).

5. The rectifier bridge package structure of claim 2, wherein: the first and second leads are arranged in a first row; the third and fourth leads are arranged in a second row; and the first and second rows are parallel to each other. The left side of the injection tube (55) is provided with an exhaust pipe (8), and the bottom of the exhaust pipe (8) is communicated with the top of the upper cover plate (52). ​ 6. The rectifier bridge package structure of claim 1, wherein: The surface of the pin (4) is provided with a square groove (9), and the square groove (9) is located on the left side of the rack (1).

7. The rectifier bridge package structure of claim 2, wherein: The inside of the upper cover plate (52) and the lower cover plate (51) is fixedly connected with a long strip (10), and the number of the long strip (10) is several.

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