Rectifier bridge for charger
By introducing a movable joint adjustment pin and a high-efficiency heat dissipation structure into the rectifier bridge for chargers, the compatibility and heat dissipation problems of existing rectifier bridges are solved, the stability and protection performance of the circuit are improved, and the service life is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-24
AI Technical Summary
Existing charger rectifier bridges have fixed adjustment pin structures, simple heat dissipation designs, and insufficient protection capabilities, resulting in limited adaptability, inadequate heat dissipation to meet high power requirements, and susceptibility to external corrosion affecting electrical performance and reliability.
The position can be flexibly adjusted by using a combination of adjustable pins, movable joints and locking screws. The heat dissipation structure includes heat dissipation fins and heat conduction holes, which, together with the package housing, form an efficient heat dissipation system, and are protected from external intrusion by sealant.
It enables flexible adjustment of pin positions to meet different circuit layout requirements, improves heat dissipation efficiency and protection capabilities, ensures circuit stability and reliability, and extends service life.
Smart Images
Figure CN224037274U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rectifier bridge technical field especially is related to a rectifier bridge for charger. BACKGROUND
[0002] In the circuit system of charger, rectifier bridge is the key component of realizing AC to DC conversion, and its performance is crucial to the stability and service life of charger.
[0003] However, the existing rectifier bridge for charger has many technical bottlenecks: first, the adjusting pin structure is fixed, it is difficult to adjust the position and angle flexibly according to the circuit layout demand, and the adaptability is limited; second, the heat dissipation design is single, only relying on simple heat dissipation components, it is difficult to meet the heat dissipation demand under high power operation, and it is easy to cause component overheating failure; third, the protection ability is insufficient, external water vapor, dust and the like are easy to invade the inside, and affect the electrical performance and reliability of the substrate and rectifier bridge chip. UTILITY MODEL CONTENTS
[0004] Based on this, the purpose of the utility model is to provide a rectifier bridge for charger with flexible pin adjustment and excellent heat dissipation performance.
[0005] The utility model adopts the following technical scheme:
[0006] A rectifier bridge for charger, including rectifier bridge body, the rectifier bridge body includes substrate, rectifier bridge chip, adjusting pin, heat dissipation structure and packaging shell, the substrate is housed in the inside of split packing shell, and the one end of the substrate is provided with the guide long slot, the rectifier bridge chip is welded and is fixed on the surface of substrate, the adjusting pin is connected to the guide long slot, the adjusting pin includes pin body, first movable joint, second movable joint, connecting rod and locking screw, the pin body is fixedly connected to one end of first movable joint, the first movable joint is rotatably connected to second movable joint, the second movable joint is fixedly connected to one end of connecting rod, the locking screw is used for fixing connecting rod and guide long slot, the heat dissipation structure is clamped to the bottom of packaging shell.
[0007] Further improvement of the above technical scheme is that the adjusting pin is provided with a plurality of, and the plurality of adjusting pins are arrayed and distributed in the guide long slot.
[0008] Further improvement of the above technical scheme is that the first movable joint is connected with first pivot, the first pivot is movably connected with rotating cylinder, and rotating hole is formed in the center of rotating cylinder.
[0009] Further improvement of the above technical scheme is that the second movable joint is connected with second pivot, and the second pivot is connected to the rotating hole of rotating cylinder.
[0010] Further improvement of the above technical solution is that the heat dissipation structure comprises a heat dissipation bottom plate, a plurality of heat dissipation fins and a heat conduction leg; the heat dissipation bottom plate is clamped to the bottom of the packaging shell; the heat dissipation fins are connected to the bottom of the substrate through heat-conducting silicone grease; the number of the heat conduction legs is four, and the four heat conduction legs are respectively connected to the four corners of the heat dissipation bottom plate.
[0011] Further improvement of the above technical solution is that the plurality of heat dissipation fins are arranged in a comb-shaped array on the top of the heat dissipation bottom plate, and a heat dissipation channel is formed between adjacent heat dissipation fins.
[0012] Further improvement of the above technical solution is that the heat conduction leg is in a zigzag bending structure, and a first fixing hole is formed on the side of the heat conduction leg away from the heat dissipation bottom plate.
[0013] Further improvement of the above technical solution is that the packaging shell comprises an upper shell and a lower shell; the upper shell is connected to the lower shell in a clamping manner; one side of the upper shell is provided with a sealing hole for avoiding the connecting rod; the inner bottom of the lower shell is provided with a positioning groove, the positioning groove is connected to the heat dissipation bottom plate in a limiting manner, and the outer four corners of the positioning groove are respectively provided with a second fixing hole matched with the first fixing hole.
[0014] Further improvement of the above technical solution is that the positioning groove is provided with a plurality of heat conduction holes, the plurality of heat conduction holes are arranged in a radial array on the bottom surface of the positioning groove and are uniformly arranged around the central area of the positioning groove, and the heat conduction holes are arranged in contact with the heat dissipation bottom plate.
[0015] Further improvement of the above technical solution is that the sealing hole is filled with waterproof sealant.
[0016] The beneficial effects of the utility model are as follows:
[0017] The adjusting pin is combined by the first movable joint, the second movable joint, the connecting rod and the locking screw, the position of the pin body is flexibly adjusted and fixed, different circuit layout requirements are met, the heat dissipation structure is clamped to the bottom of the packaging shell, is convenient to disassemble and maintain, and the use convenience is improved, the heat-conducting silicone grease, the heat dissipation fin and the heat conduction hole are designed to build an efficient heat dissipation system, and heat dissipation is accelerated. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the rectifier bridge for the charger of the utility model;
[0019] Figure 2 It is Figure 1 An exploded view of the rectifier bridge for the charger;
[0020] Figure 3 It is Figure 1Structure diagram of the adjusting pin of the rectifier bridge for the charger;
[0021] Figure 4 For Figure 1 Explosion view of the adjusting pin of the rectifier bridge for the charger;
[0022] Figure 5 For Figure 1 Structure diagram of the heat dissipation structure of the rectifier bridge for the charger;
[0023] Figure 6 For Figure 1 Explosion view of the heat dissipation structure and the lower shell of the rectifier bridge for the charger;
[0024] Figure 7 For Figure 1 Structure diagram of the lower shell of the rectifier bridge for the charger.
[0025] Reference numerals in the drawings are:
[0026] 10, rectifier bridge body; 11, rectifier bridge chip; 20, base plate; 21, guide long groove; 30, adjusting pin; 31, pin body; 32, connecting rod; 33, locking screw; 40, heat dissipation structure; 41, heat dissipation bottom plate; 42, heat dissipation fin; 43, heat conduction leg; 44, heat dissipation channel; 45, first fixing hole; 50, packaging shell; 60, first movable joint; 61, first rotating shaft; 62, rotating cylinder; 63, rotating hole; 70, second movable joint; 71, second rotating shaft; 80, upper shell; 81, sealing hole; 90, lower shell; 91, positioning groove; 92, second fixing hole; 93, heat conduction hole. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] In the description of the present application, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.
[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] like Figures 1 to 7 As shown in the figure, this utility model relates to an embodiment of a charger rectifier bridge, including a rectifier bridge body 10. The rectifier bridge body 10 includes a substrate 20, a rectifier bridge chip 11, an adjustment pin 30, a heat dissipation structure 40, and a package shell 50. The substrate 20 is housed inside the package shell, and a guide groove 21 is formed at one end of the substrate 20. The rectifier bridge chip 11 is soldered and fixed to the surface of the substrate 20. The adjustment pin 30 is connected to the guide groove 21. The adjustment pin 30 includes a pin body 31, a first movable joint 60, a second movable joint 70, a connecting rod 32, and a locking screw 33. The pin body 31 is fixedly connected to one end of the first movable joint 60. The first movable joint 60 is rotatably connected to the second movable joint 70. The second movable joint 70 is fixedly connected to one end of the connecting rod 32. The locking screw 33 is used to fix the connecting rod 32 to the guide groove 21. The heat dissipation structure 40 is snapped into the bottom of the package shell 50.
[0031] Furthermore, the adjustment pins 30 are provided in multiple arrays, and the arrays of the multiple adjustment pins 30 are evenly distributed in the guide slots 21. Specifically, the arrays of multiple adjustment pins 30 are evenly distributed in the guide slots 21. During the current conduction process, based on the principle of current sharing in the circuit, the current can be evenly distributed to each pin, avoiding excessive local current that could cause abnormal heating of the resistors. This ensures that the current conduction of the rectifier bridge is balanced during operation, and improves the stability and reliability of the overall circuit operation.
[0032] Furthermore, the first movable joint 60 is connected to a first rotating shaft 61, and the first rotating shaft 61 is movably connected to a rotating cylinder 62, the rotating cylinder 62 having a rotating hole 63 in its center. Specifically, the first movable joint 60 is connected to the rotating cylinder 62 via the first rotating shaft 61, allowing the pin body 31 to rotate around the rotating cylinder 62 at multiple angles when adjusting the angle of the pin 30. This structure can quickly adapt to solder joints with different tilt angles during circuit assembly, ensuring precise electrical connections between the pin and the chip / circuit board. In some embodiments, the surface of the first rotating shaft 61 and the interior of the rotating hole 63 are provided with a polytetrafluoroethylene coating or rubber gaskets to provide a predetermined frictional force to prevent the shaft from rotating freely.
[0033] Further, the second movable joint 70 is connected with a second rotating shaft 71, and the second rotating shaft 71 is connected with the rotating hole 63 of the rotating cylinder 62. Specifically, the second rotating shaft 71 is connected with the rotating hole 63 of the rotating cylinder 62, so that the first movable joint 60 and the second movable joint 70 form a linkage rotating structure. In actual work, the movable range of the pin can be expanded through the double-joint linkage, especially in narrow space or complex circuit layout, the posture of the pin can be flexibly adjusted to ensure the reliable connection of the pin and the circuit and improve the environmental adaptability of the rectifier bridge.
[0034] Further, the heat dissipation structure 40 comprises a heat dissipation bottom plate 41, a plurality of heat dissipation fins 42, and heat conduction feet 43. The heat dissipation bottom plate 41 is clamped to the bottom of the packaging shell 50. The heat dissipation fins 42 are connected to the bottom of the substrate 20 through heat-conducting silicone (not shown in the figure). The number of the heat conduction feet 43 is four, and the four heat conduction feet 43 are respectively connected to the four corners of the heat dissipation bottom plate 41. Specifically, during heat dissipation, the heat transferred by the substrate 20 is quickly conducted to the heat dissipation fins 42 through the heat-conducting silicone (not shown in the figure). The heat dissipation bottom plate 41 is clamped to the bottom of the packaging shell 50 to ensure the stability of the heat dissipation structure 40. The four heat conduction feet 43 balance the support of the heat dissipation bottom plate 41, maintain the stability of the heat dissipation structure 40 during the operation of the rectifier bridge, and avoid the influence of factors such as vibration on the heat dissipation efficiency.
[0035] Further, a plurality of the heat dissipation fins 42 are arranged in a comb-shaped array on the top of the heat dissipation bottom plate 41, and the heat dissipation channels 44 are formed between adjacent heat dissipation fins 42. Specifically, the comb-shaped heat dissipation fins 42 increase the heat dissipation area. When the rectifier bridge works and generates heat, air flows through the heat dissipation channels 44 between adjacent heat dissipation fins 42, based on the principle of air convection, to accelerate heat exchange. This structure can quickly dissipate the heat of the fins to the outside, effectively reduce the internal temperature of the rectifier bridge, and ensure that the chips and other components work at an appropriate temperature.
[0036] Further, the heat conduction feet 43 are in a “Z”-shaped bending structure, and a first fixing hole 45 is formed on the side of the heat conduction feet 43 away from the heat dissipation bottom plate 41. Specifically, the “Z”-shaped heat conduction feet 43 prolong the heat conduction path during heat conduction, slow down the speed of heat transfer to the outside, and avoid sudden temperature changes in local areas. At the same time, the first fixing hole 45 is used for external fixation, which ensures the stable connection between the heat dissipation structure 40 and the external mounting carrier during the operation of the rectifier bridge, and maintains the working reliability of the heat dissipation system.
[0037] Further, the packaging shell 50 comprises an upper shell 80 and a lower shell 90; the upper shell 80 is connected to the lower shell 90 by buckling; one side of the upper shell 80 is provided with a sealing hole 81 for avoiding the connecting rod 32; the inner bottom of the lower shell 90 is provided with a positioning groove 91 which is limitingly connected with the heat dissipation bottom plate 41, and the outer four corners of the positioning groove 91 are respectively provided with second fixing holes 92 which are matched and connected with the first fixing holes 45. Specifically, the upper shell 80 and the lower shell 90 of the packaging shell 50 are buckled to form a protective cavity, the sealing hole 81 is filled with waterproof sealant to prevent water vapor from entering when the rectifier bridge is working; the positioning groove 91 is limitingly matched with the heat dissipation bottom plate 41, and the second fixing hole 92 is connected with the first fixing hole 45, so that the heat dissipation structure 40 can maintain accurate position during working, so that heat can be stably conducted to the heat dissipation component, and the overall protection and heat dissipation cooperative working performance is improved.
[0038] Further, the positioning groove 91 is provided with a plurality of heat conduction holes 93 which are radially arrayed on the bottom surface of the positioning groove 91 and uniformly arranged around the central area of the positioning groove 91, and the heat conduction holes 93 are in contact with the heat dissipation bottom plate 41. Specifically, when the rectifier bridge is working, the heat conduction holes 93 serve as auxiliary heat dissipation channels 44 to dissipate the heat transferred from the substrate 20 to the positioning groove 91 to the outside through the heat conduction holes 93. The heat conduction holes 93 penetrating through the positioning groove 91 to the outside can disperse and conduct heat, avoid local heat accumulation, and improve the balance and efficiency of overall heat dissipation of the rectifier bridge based on the principle of heat conduction uniformity.
[0039] Further, the sealing hole 81 is filled with waterproof sealant (not shown in the figure). Specifically, the sealing hole 81 is filled with waterproof sealant (not shown in the figure) to form a waterproof barrier when the rectifier bridge is working, so as to prevent external water vapor from entering the inside through the sealing hole 81. This design protects the substrate 20, chips and other elements from water vapor erosion, maintains stable electrical performance, ensures that the rectifier bridge can still work normally in a humid environment, and prolongs the service life.
[0040] The utility model adjusts the pin 30 through the combination of first movable joint 60, second movable joint 70, connecting rod 32 and locking screw 33, realizes the flexible adjustment and fixed of pin main body 31 position, satisfies different circuit layout demand;The heat dissipation structure 40 is clamped in the bottom of the packaging shell 50, is convenient for dismounting and maintaining, improves the convenience of use;The design of heat-conducting silicone grease (not shown in the figure), heat dissipation fin 42, heat conduction hole 93 constructs high -efficient heat dissipation system, accelerates heat dissipation.
[0041] The above merely expresses the preferred technical solutions of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, and the present application also intends to include these changes and modifications.
Claims
1. A rectifier bridge for a charger, characterized by The application relates to a rectifier bridge body which comprises a base plate, a rectifier bridge chip, an adjusting pin, a heat dissipation structure and a packaging shell; the base plate is accommodated in the packaging shell, one end of the base plate is provided with a guide long slot; the rectifier bridge chip is welded and fixed on the surface of the base plate; the adjusting pin is connected to the guide long slot; the adjusting pin comprises a pin body, a first movable joint, a second movable joint, a connecting rod and a locking screw; one end of the pin body is fixedly connected to the first movable joint; the first movable joint is rotatably connected to the second movable joint; one end of the connecting rod is fixedly connected to the second movable joint; the locking screw is used for fixing the connecting rod and the guide long slot; and the heat dissipation structure is clamped to the bottom of the packaging shell.
2. The rectifier bridge for a charger according to claim 1, characterized by The adjusting pin is provided with a plurality of adjusting pins which are evenly distributed in the guide long slot.
3. The rectifier bridge for a charger according to claim 1, characterized by The first movable joint is connected with a first rotating shaft, the first rotating shaft is movably connected with a rotating cylinder, and a rotating hole is formed in the center of the rotating cylinder.
4. The rectifier bridge for a charger according to claim 1, characterized by The second movable joint is connected with a second rotating shaft, and the second rotating shaft is connected to the rotating hole of the rotating cylinder.
5. The rectifier bridge for a charger according to claim 1, wherein The heat dissipation structure comprises a heat dissipation bottom plate, a plurality of heat dissipation fins and heat conduction supporting legs; the heat dissipation bottom plate is clamped to the bottom of the packaging shell; the heat dissipation fins are connected to the bottom of the base plate through heat conduction silicon grease; the number of the heat conduction supporting legs is four, and the four heat conduction supporting legs are connected to the four corners of the heat dissipation bottom plate.
6. The rectifier bridge for a charger according to claim 5, wherein The plurality of heat dissipation fins are comb-tooth-shaped and are arrayed on the top of the heat dissipation bottom plate, and heat dissipation channels are formed between adjacent heat dissipation fins.
7. The rectifier bridge for a charger according to claim 5, wherein The heat conduction supporting leg is in a zigzag bending structure, and a first fixing hole is formed in the side of the heat conduction supporting leg away from the heat dissipation bottom plate.
8. The rectifier bridge for a charger according to claim 1, wherein The packaging shell comprises an upper shell and a lower shell; the upper shell is connected to the lower shell in a buckling mode; one side of the upper shell is provided with a sealing hole which is used for avoiding the connecting rod; the inner bottom of the lower shell is provided with a positioning groove which is limitingly connected to the heat dissipation bottom plate; the outer four corners of the positioning groove are respectively provided with second fixing holes which are matched with the first fixing holes.
9. The rectifier bridge for a charger according to claim 8, characterized by The positioning groove is provided with a plurality of heat conduction holes which are radially arrayed on the bottom surface of the positioning groove and are evenly arranged around the center area of the positioning groove, and the heat conduction holes are in contact with the heat dissipation bottom plate.
10. The rectifier bridge for a charger according to claim 8, wherein The sealing hole is filled with waterproof sealing glue.