Rectifier bridge with temperature protection function

Abstract

The utility model relates to the technical field of electronic components, in particular to a rectifier bridge with a temperature protection function, which comprises a rectifier bridge body, a plurality of connecting pins are fixedly arranged at the bottom end of the whole bridge body, a cavity is arranged at the bottom end in the rectifier bridge body, a first induction sheet is arranged at the bottom end in the cavity, and a second induction sheet is arranged at the bottom end in the cavity. A first contact is arranged at the top end of the first induction sheet; when the first induction sheet and the second induction sheet reach a certain temperature, heat of the second induction sheet can be transmitted to the rubber film, and at the moment, gas in the rubber film can enable the rubber film to expand and deform by utilizing the principle of thermal expansion and cold contraction, so that the second induction sheet moves towards one side far away from the rubber film; the temperature of the rectifier bridge body can be effectively protected, and the problems of short circuit, device damage and economic loss caused by the fact that the temperature of the rectifier bridge is too high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a rectifier bridge with a temperature protection function. Background Art

[0002] A bridge rectifier is an electronic component that consists of multiple diodes. Its main function is to rectify and adjust the direction of current. It is better to use a bridge rectifier for rectification. First of all, it is very convenient, and the four tubes inside it are generally selected in pairs, so their performance is relatively close. Secondly, when high-power rectification is required, a heat sink can be installed on the bridge rectifier to make the performance more stable during operation. The rectifier bridge rectifier product is composed of four rectifier silicon chips connected in a bridge manner and encapsulated with insulating plastic. The high-power rectifier bridge is encapsulated with a zinc metal shell outside the insulation layer to enhance heat dissipation.

[0003] In the Chinese utility model patent application disclosure specification CN217182179U, although it has the advantage of protecting the pins on the rectifier bridge by setting a protective device, avoiding the rectifier bridge from falling or being hit during transportation and installation, causing damage to the pins and thus affecting the use, and effectively reducing the damage to the rectifier bridge caused by accidents, but when the rectifier bridge is produced and used, if too much heat accumulates, the product itself will be damaged due to excessive stability, thereby affecting the reliability of the product. Therefore, a new utility model is needed to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a rectifier bridge with a temperature protection function to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rectifier bridge with a temperature protection function comprises a rectifier bridge body, a plurality of connecting pins are fixedly arranged at the bottom end of the entire bridge body, a cavity is opened at the bottom end of the interior of the rectifier bridge body, a first induction sheet is arranged at the bottom end of the interior of the cavity, a first contact is arranged at the top end of the first induction sheet, a bearing frame is fixedly arranged at one side of the interior of the cavity, a heat absorption mechanism is arranged inside the bearing frame, a second induction sheet is arranged at one side of the heat absorption mechanism inside the bearing frame, a second contact is arranged at the bottom end of the second induction sheet, a reset mechanism is arranged at one side of the second induction sheet, a bridge wire is fixedly arranged at the top end of the second induction sheet, and a connection chip is fixedly arranged at one end of the bridge wire.

[0007] Furthermore, the heat absorption mechanism includes a heat absorption plate, a heat absorption column, and a rubber film. Heat absorption plates are arranged on one side of the top and the outer side of the inner side of the carrying frame. A heat absorption column is arranged between the two heat absorption plates. A rubber film is arranged inside the carrying frame.

[0008] Furthermore, the reset mechanism includes a reset frame, a reset spring, a baffle, and a mounting rod. A reset frame is arranged inside the cavity on a side away from the bearing frame, a reset spring is arranged on one side inside the reset frame, a baffle is arranged on one side of the reset spring inside the reset frame, a mounting rod is arranged on one side of the second sensor sheet, and a reset frame is arranged at one end of the mounting rod and connected to one side of the baffle through a mounting hole.

[0009] Furthermore, limit blocks are provided at both ends of the second sensing piece.

[0010] Furthermore, one end of the two limit blocks is provided with a limit rod through the mounting hole, and both ends of the limit rod are fixedly connected to the rectifier bridge body.

[0011] Furthermore, ventilation holes are provided on both sides of the bottom end of the rectifier bridge body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In a rectifier bridge with temperature protection function, when the first induction sheet and the second induction sheet reach a certain temperature, the overall temperature inside the rectifier bridge body will rise, and the heat will be absorbed by the heat absorbing plate located outside the bearing frame in the heat absorbing mechanism, and the heat will be transferred to the heat absorbing plate inside the bearing frame through the heat absorbing column. By utilizing the principle of thermal expansion and contraction, the gas inside the rubber membrane will cause the rubber membrane to expand and deform, so that the second induction sheet moves to the side away from the rubber membrane, and the first contact is disconnected from the second contact. The advantage of this is that the rectifier bridge body can be effectively protected from temperature, avoiding the problem of short circuit caused by over-high temperature in the device, resulting in damage to the device and economic loss.

[0014] 2. This rectifier bridge with temperature protection function drives the connecting rod to move to one side through the second induction plate, and drives the pressure plate to move to one side to compress the reset spring. At this time, the reset spring will form a force in the opposite direction, opposing each other. When the rubber membrane drops to a certain temperature, according to the principle of thermal expansion and contraction, the rubber membrane can no longer apply pressure to the second induction plate, so that the force of the reset spring is used to move the second induction plate to the side close to the rubber membrane, so that the first contact and the second contact are reconnected. The reset can be quickly achieved through the reset spring, which increases the practicality and convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3It is a top view of the connection structure between the second sensing piece and the limiting block of the utility model;

[0018] Figure 4 For this utility model Figure 2 The enlarged schematic diagram of point A in the middle;

[0019] Figure 5 For this utility model Figure 2 A magnified schematic diagram of point B in the middle.

[0020] In the figure: 1. rectifier bridge body; 2. connecting pin; 3. cavity; 4. first induction plate; 5. first contact; 6. bearing frame; 7. second induction plate; 8. second contact; 9. bridge wire; 10. connecting chip; 11. heat absorbing plate; 12. heat absorbing column; 13. rubber membrane; 14. reset frame; 15. reset spring; 16. baffle; 17. mounting rod; 18. limit block; 19. limit rod; 21. air vent. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 As shown, a technical solution provided by the utility model:

[0023] A rectifier bridge with a temperature protection function comprises a rectifier bridge body 1, a plurality of connecting pins 2 are fixedly arranged at the bottom of the entire bridge body, a cavity 3 is opened at the bottom of the interior of the rectifier bridge body 1, a first induction sheet 4 is arranged at the bottom of the interior of the cavity 3, a first contact 5 is arranged at the top of the first induction sheet 4, a bearing frame 6 is fixedly arranged at one side of the interior of the cavity 3, a heat absorption mechanism is arranged inside the bearing frame 6, a second induction sheet 7 is arranged at one side of the heat absorption mechanism inside the bearing frame 6, a second contact 8 is arranged at the bottom of the second induction sheet 7, a reset mechanism is arranged at one side of the second induction sheet 7, a bridge wire 9 is fixedly arranged at the top of the second induction sheet 7, and a connecting chip 10 is fixedly arranged at one end of the bridge wire 9.

[0024] Preferably, the heat absorbing mechanism includes a heat absorbing plate 11, a heat absorbing column 12, and a rubber membrane 13. The heat absorbing plate 11 is arranged on one side of the top inside and the outside of the carrying frame 6, the heat absorbing column 12 is arranged between the two heat absorbing plates 11, and the rubber membrane 13 is arranged inside the carrying frame 6. Through the use of the heat absorbing mechanism, it can be ensured that the gas inside the rubber membrane 13 can move to one side through the principle of thermal expansion and contraction.

[0025] Preferably, the reset mechanism includes a reset frame 14, a reset spring 15, a baffle 16, and a mounting rod 17. The reset frame 14 is arranged on a side away from the bearing frame 6 inside the cavity 3, a reset spring 15 is arranged on one side inside the reset frame 14, a baffle 16 is arranged on one side of the reset spring 15 inside the reset frame 14, a mounting rod 17 is arranged on one side of the second sensor sheet 7, and one end of the mounting rod 17 is connected to one side of the baffle 16 by a mounting hole. Through the reset mechanism, rapid reset can be achieved when the temperature drops to a safe range.

[0026] Preferably, both ends of the second sensing plate 7 are provided with limit blocks 18 ; the limit blocks 18 are used in conjunction with the limit rods 19 .

[0027] Preferably, one end of the two limit blocks 18 is provided with a limit rod 19 through the mounting hole, and both ends of the limit rod 19 are fixedly connected to the rectifier bridge body 1; the limit block 18 is used to ensure the horizontal movement stability of the second induction plate 7.

[0028] Preferably, ventilation holes 21 are provided on both sides of the bottom end of the rectifier bridge body 1 to assist the rectifier bridge body 1 in heat dissipation.

[0029] When a rectifier bridge with a temperature protection function of the present embodiment is in use, when the first induction sheet 4 and the second induction sheet 7 reach a certain temperature, the overall temperature inside the rectifier bridge body 1 will rise, and the heat will be absorbed by the heat absorbing plate 11 located outside the bearing frame 6 in the heat absorption mechanism, and the heat will be transferred to the heat absorbing plate 11 inside the bearing frame 6 through the heat absorption column 12. By utilizing the principle of thermal expansion and contraction, the gas inside the rubber membrane 13 will cause the rubber membrane 13 to expand and deform, so that the second induction sheet 7 moves to the side away from the rubber membrane 13, so that the first contact 5 is disconnected from the second contact 8. The advantage of this is that the rectifier bridge body 1 can be effectively protected from temperature, so as to avoid the problem of short circuit caused by excessive temperature in the device, resulting in damage to the device and economic loss. The bearing plate 6 needs to be made of heat-insulating material to avoid damage to the second induction sheet 7 caused by accumulated heat.

[0030] When the second sensing piece 7 moves to one side, the connecting rod is driven to move to one side through the second sensing piece 7, and the connecting rod drives the pressure plate to move to one side, so that the return spring 15 is compressed. At this time, the return spring 15 will form a force in the opposite direction, which is opposite to each other. When the rubber membrane 13 drops to a certain temperature, according to the principle of thermal expansion and contraction, the rubber membrane 13 can no longer apply pressure to the second sensing piece 7. The force of the return spring 15 is used to move the second sensing piece 7 to the side close to the rubber membrane 13, so that the first contact 5 is reconnected with the second contact 8. The advantage of this is that the return spring 15 can quickly achieve reset, which increases the practicality and convenience of the device.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rectifier bridge with temperature protection function, comprising a rectifier bridge body (1), characterized in that: A plurality of connecting pins (2) are fixedly arranged at the bottom end of the rectifier bridge body, a cavity (3) is provided at the bottom end of the rectifier bridge body (1), a first induction sheet (4) is arranged at the bottom end of the cavity (3), a first contact (5) is arranged at the top end of the first induction sheet (4), a carrying frame (6) is fixedly arranged at one side of the cavity (3), a heat absorption mechanism is arranged at the inside of the carrying frame (6), a second induction sheet (7) is arranged at one side of the heat absorption mechanism at the inside of the carrying frame (6), a second contact (8) is arranged at the bottom end of the second induction sheet (7), a reset mechanism is arranged at one side of the second induction sheet (7), a bridge wire (9) is fixedly arranged at the top end of the second induction sheet (7), and a connection chip (10) is fixedly arranged at one end of the bridge wire (9).

2. A rectifier bridge with temperature protection function according to claim 1, characterized in that: The heat absorption mechanism comprises a heat absorption plate (11), a heat absorption column (12), and a rubber membrane (13); a heat absorption plate (11) is arranged on one side of the top end and on the outer side of the inner side of the carrying frame (6); a heat absorption column (12) is arranged between the two heat absorption plates (11); and a rubber membrane (13) is arranged at one end of the inner side of the carrying frame (6).

3. A rectifier bridge with temperature protection function according to claim 1, characterized in that: The reset mechanism comprises a reset frame (14), a reset spring (15), a baffle (16), and a mounting rod (17); a reset frame (14) is arranged inside the cavity (3) on a side away from the bearing frame (6); a reset spring (15) is arranged on one side inside the reset frame (14); a baffle (16) is arranged on one side of the reset spring (15) inside the reset frame (14); a mounting rod (17) is arranged on one side of the second induction sheet (7); one end of the mounting rod (17) is connected to one side of the baffle (16) by a mounting hole provided with the reset frame (14).

4. A rectifier bridge with temperature protection function according to claim 1, characterized in that: Limiting blocks (18) are provided at both ends of the second sensing plate (7).

5. A rectifier bridge with temperature protection function according to claim 4, characterized in that: One end of the two limit blocks (18) is provided with a limit rod (19) through a mounting hole, and both ends of the limit rod (19) are fixedly connected to the rectifier bridge body (1).

6. A rectifier bridge with temperature protection function according to claim 1, characterized in that: Both sides of the bottom end of the rectifier bridge body (1) are provided with air holes (21).

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