A snap-fit ​​structure for a gate device of a power electronic device

Abstract

The present invention discloses a buckle structure of a gate device of a power electronic device, which relates to the technical field of power electronic devices, and aims to solve the problem that the upper and lower shell parts of the gate device of the existing power electronic device are mainly fixed by gluing, which is difficult to disassemble and inconvenient for maintenance. A lower packaging shell is arranged below the upper packaging shell, a substrate is arranged below the lower packaging shell, buckle mechanisms are installed around the upper packaging shell, and four buckle mechanisms are arranged, buckle grooves are arranged on the outer wall of the buckle mechanism, and card grooves are arranged around the lower packaging shell, and four card grooves are arranged, a gate mounting groove is arranged at the middle position inside the upper packaging shell and the lower packaging shell, a source mounting groove is arranged on one side of the gate mounting groove, and a drain mounting groove is arranged on the other side of the gate mounting groove, and a wire channel is arranged between the gate mounting groove and the source mounting groove and the drain mounting groove.

Description

Technical Field

[0001] The invention relates to the technical field of power electronic devices, and in particular to a buckle structure of a gate device of a power electronic device. Background Art

[0002] Power electronic devices, also known as power semiconductor devices, are high-power electronic devices mainly used in power equipment's power conversion and control circuits. Field effect transistor, abbreviated as field effect tube, is a type of semiconductor power electronic device. A general transistor is conducted by two polarity carriers, namely majority carriers and minority carriers of opposite polarity, so it is called a bipolar transistor, while FET is only conducted by majority carriers, which is opposite to bipolar, and is also called a unipolar transistor. It is a voltage-controlled semiconductor device with the advantages of high input resistance, low noise, low power consumption, large dynamic range, easy integration, no secondary breakdown phenomenon, and wide safe working area. It has now become a strong competitor to bipolar transistors and power transistors.

[0003] However, the upper and lower shell parts of the existing power electronic device gate device are mainly fixed by glue, which is difficult to disassemble and inconvenient for maintenance; therefore, it does not meet the existing needs. In this regard, we propose a snap-on structure for the power electronic device gate device. Summary of the invention

[0004] The object of the present invention is to provide a snap-fit ​​structure of a gate device of a power electronic device to solve the problem in the above background technology that the upper and lower shell parts of the gate device of the existing power electronic device are mainly fixed by glue, which makes them difficult to disassemble and inconvenient to repair.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a snap-on structure of a gate device of a power electronic device, comprising an upper packaging shell, a lower packaging shell is arranged below the upper packaging shell, a substrate is arranged below the lower packaging shell, snap-on mechanisms are installed on all four sides of the upper packaging shell, and four snap-on mechanisms are arranged, a snap groove is arranged on the outer wall of the snap-on mechanism, and four snap grooves are arranged on all four sides of the lower packaging shell, a gate mounting groove is arranged at a middle position inside the upper packaging shell and the lower packaging shell, a source mounting groove is arranged on one side of the gate mounting groove, a drain mounting groove is arranged on the other side of the gate mounting groove, a wire channel is arranged between the gate mounting groove and the source mounting groove and the drain mounting groove, and a wire groove is arranged at the lower end of the gate mounting groove.

[0006] Preferably, a connecting block is provided at one end of the snap mechanism, the snap mechanism is rotatably connected to the connecting block via a rotating shaft, and the connecting block is fixedly connected to the upper packaging shell via adhesive.

[0007] Preferably, the upper packaging shell is fixedly connected to a slot on the lower packaging shell via a snap mechanism.

[0008] Preferably, magnetic sheets are installed inside the four card slots, and the magnetic sheets are fixedly connected to the card slots.

[0009] Preferably, the upper ends of the gate mounting groove, the source mounting groove and the drain mounting groove are all provided with connecting bumps, and the connecting bumps are an integral structure with the upper packaging shell.

[0010] Preferably, an elastic sealing ring is provided on the inner wall of the connecting protrusion, and the elastic sealing ring is fixedly connected to the inner wall of the connecting protrusion.

[0011] Preferably, sealing strips are arranged around the inner wall of the lower packaging shell, and the sealing strips are fixedly connected to the lower packaging shell.

[0012] Preferably, a sealing strip engaging groove is provided above the sealing rubber strip, and the sealing strip engaging groove and the upper packaging shell are an integral structure.

[0013] Preferably, the upper packaging shell and the lower packaging shell are both made of polytetrafluoroethylene material.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention fixes and connects the upper packaging shell and the lower packaging shell through a snap mechanism. The snap mechanism on the upper packaging shell is connected to the snap slot on the lower packaging shell by folding a rotating shaft. A magnetic suction sheet is provided in the snap slot, which can absorb the metal snap by magnetic force, thereby improving the stability during fixation and preventing it from loosening. When maintenance is required, the upper and lower shells can be separated quickly and conveniently by using the snap slot on the outer wall of the snap to fold it again and unlock it.

[0016] 2. By installing the snap mechanism on the connecting block, the connecting block is used to fix it to the upper packaging shell. After folding, the snap mechanism is a hidden embedded type. Compared with the conventional exposed type, it will not break and loosen due to external impact, thus ensuring its service life.

[0017] 3. By respectively arranging sealing strips and sealing strip joint grooves around the inner walls of the lower packaging shell and the upper packaging shell, after the upper and lower shells are closed, the sealing strips and joint grooves that fit each other can be relied on to improve the overall sealing performance of the gate device, thereby preventing dust from entering from the connection and affecting the service life of the internal components.

[0018] 4. By setting an elastic sealing ring on the inner wall of the connecting bump, the elastic sealing ring is made of silicone rubber, which can use its own elasticity to improve the tightness with the gate, source and drain, preventing dust from entering from the connection between the connecting bump and the component. The silicone rubber itself has good heat resistance, so that the device can operate for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the top view of the lower packaging shell of the present invention;

[0022] Figure 4 This is a bottom view of the structure of the upper packaging shell of the present invention;

[0023] Figure 5 It is a partial enlarged view of point A of the present invention;

[0024] In the figure: 1. upper packaging shell; 2. lower packaging shell; 3. substrate; 4. connecting bump; 5. snap mechanism; 6. snap groove; 7. connecting block; 8. rotating shaft; 9. snap groove; 10. magnetic attraction sheet; 11. gate mounting groove; 12. source mounting groove; 13. drain mounting groove; 14. elastic sealing ring; 15. wire channel; 16. wire groove; 17. sealing strip; 18. sealing strip joint groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-5An embodiment of the present invention provides: a buckle structure of a gate device of a power electronic device, comprising an upper packaging shell 1, a lower packaging shell 2 is arranged below the upper packaging shell 1, a substrate 3 is arranged below the lower packaging shell 2, buckle mechanisms 5 are installed around the upper packaging shell 1, and four buckle mechanisms 5 are arranged, and the buckle mechanisms 5 play a role in fixing the upper and lower packaging shells, and buckle grooves 6 are arranged on the outer wall of the buckle mechanism 5, and the buckle grooves 6 are used to flip up the closed buckle mechanism 5, and the lower packaging shell 2 is arranged around the buckle grooves 9, and four buckle grooves 9 are arranged, and the buckle grooves 9 are closed with the buckle mechanism 5. A gate mounting groove 11 is provided at the middle position inside the upper packaging shell 1 and the lower packaging shell 2. The gate mounting groove 11 is used to install the gate component. A source mounting groove 12 is provided on one side of the gate mounting groove 11. The source mounting groove 12 is used to install the source component. A drain mounting groove 13 is provided on the other side of the gate mounting groove 11. The drain mounting groove 13 is used to install the drain component. A wire channel 15 is provided between the gate mounting groove 11 and the source mounting groove 12 and the drain mounting groove 13. The wire channel 15 can facilitate the wiring work of each component. A wire groove 16 is provided at the lower end of the gate mounting groove 11.

[0027] Furthermore, a connecting block 7 is provided at one end of the snap mechanism 5, and the snap mechanism 5 is rotatably connected to the connecting block 7 through a rotating shaft 8. The connecting block 7 is fixedly connected to the upper packaging shell 1 by adhesive. The connecting block 7 plays a role in installing and fixing the snap mechanism 5, and the snap mechanism 5 can be driven to rotate and be fixed to the slot 9 through the rotating shaft 8.

[0028] Furthermore, the upper packaging shell 1 is fixedly connected to the card slot 9 on the lower packaging shell 2 through the snap mechanism 5. By folding, the joint of the snap mechanism 5 is folded into the card slot 9, which can play a role in preliminary positioning.

[0029] Furthermore, magnetic sheets 10 are installed inside the four card slots 9, and the magnetic sheets 10 are fixedly connected to the card slots 9. The buckle mechanism 5 is made of an independent metal material. The suction force of the magnetic sheets 10 can further improve the stability of the connection between the buckle mechanism 5 and the card slots 9.

[0030] Furthermore, the upper ends of the gate mounting groove 11, the source mounting groove 12 and the drain mounting groove 13 are all provided with connecting bumps 4, and the connecting bumps 4 are an integral structure with the upper packaging shell 1. The connecting bumps 4 play a role in positioning the gate, source and drain, making the fixation more stable.

[0031] Furthermore, an elastic sealing ring 14 is provided on the inner wall of the connecting bump 4, and the elastic sealing ring 14 is fixedly connected to the inner wall of the connecting bump 4. The elastic sealing ring 14 is made of silicone rubber and can use its own elasticity to improve the tightness with the gate, source and drain to prevent dust from entering from the connection between the connecting bump 4 and the component. The silicone rubber itself has good heat resistance, so that the device can operate for a long time.

[0032] Furthermore, sealing strips 17 are arranged around the inner wall of the lower packaging shell 2, and the sealing strips 17 are fixedly connected to the lower packaging shell 2. The sealing strips 17 can improve the sealing performance when the upper and lower packaging shells are connected.

[0033] Furthermore, a sealing strip joint groove 18 is provided above the sealing strip 17 , and the sealing strip joint groove 18 is an integral structure with the upper packaging shell 1 , and the sealing strip joint groove 18 is used to fit with the sealing strip 17 on the lower packaging shell 2 .

[0034] Furthermore, the upper packaging shell 1 and the lower packaging shell 2 are both made of polytetrafluoroethylene material. The polytetrafluoroethylene material has excellent high and low temperature resistance and corrosion resistance, and can effectively extend the service life of the gate device.

[0035] Working principle: When in use, the gate, source and drain components are respectively installed in the gate mounting groove 11, source mounting groove 12 and drain mounting groove 13 on the lower packaging shell 2, and the wire channel 15 and wire groove 16 are used to complete the wiring work of the device. Then the upper packaging shell 1 and the lower packaging shell 2 are closed. When closing, it should be ensured that the sealing strip 17 on the lower packaging shell 2 is in contact with the sealing strip joint groove 18 in the upper packaging shell to ensure the sealing during packaging. Then, the lower buckle mechanism 5 is folded through the rotating shaft 8, so that the joint of the buckle mechanism 5 is folded into the slot 9. A magnetic suction sheet 10 is provided in the slot 9, which can rely on magnetic force to absorb the metal buckle to achieve the effect of fixing the upper and lower shells. There are four groups of buckle connection mechanisms, which are relatively stable after connection and not easy to loosen. If the gate device fails and needs to be repaired, the buckle groove 6 on the outer wall of the buckle mechanism 5 can be used to fold up four buckles, thereby separating the upper and lower shells for maintenance.

[0036] 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 snap-fit ​​structure for a gate device of a power electronic device, comprising an upper packaging shell (1), characterized in that: A lower packaging shell (2) is arranged below the upper packaging shell (1), and a substrate (3) is arranged below the lower packaging shell (2). Buckle mechanisms (5) are installed on all four sides of the upper packaging shell (1), and four buckle mechanisms (5) are arranged. Buckle grooves (6) are arranged on the outer wall of the buckle mechanism (5). Buckle grooves (9) are arranged on all four sides of the lower packaging shell (2), and four buckle grooves (9) are arranged. A gate mounting groove (11) is arranged at a middle position inside the upper packaging shell (1) and the lower packaging shell (2). A source mounting groove (12) is arranged on one side of the gate mounting groove (11), and a drain mounting groove (13) is arranged on the other side of the gate mounting groove (11). Wire channels (15) are arranged between the gate mounting groove (11) and the source mounting groove (12) and the drain mounting groove (13), and a wire groove (16) is arranged at the lower end of the gate mounting groove (11); A connecting block (7) is provided at one end of the buckle mechanism (5); the buckle mechanism (5) is rotatably connected to the connecting block (7) via a rotating shaft (8); and the connecting block (7) is fixedly connected to the upper packaging shell (1) via adhesive; The upper packaging shell (1) is fixedly connected to the card slot (9) on the lower packaging shell (2) via a card buckle mechanism (5); A magnetic attraction sheet (10) is installed inside each of the four card slots (9), and the magnetic attraction sheet (10) is fixedly connected to the card slot (9).

2. The buckle structure of a gate device of a power electronic device according to claim 1, characterized in that: The upper ends of the gate mounting groove (11), the source mounting groove (12) and the drain mounting groove (13) are all provided with connecting bumps (4), and the connecting bumps (4) and the upper packaging shell (1) are an integrated structure.

3. The buckle structure of a gate device of a power electronic device according to claim 2, characterized in that: An elastic sealing ring (14) is provided on the inner wall of the connecting protrusion (4), and the elastic sealing ring (14) is fixedly connected to the inner wall of the connecting protrusion (4).

4. The buckle structure of a gate device of a power electronic device according to claim 1, characterized in that: Sealing strips (17) are arranged around the inner wall of the lower packaging shell (2), and the sealing strips (17) are fixedly connected to the lower packaging shell (2).

5. The buckle structure of the gate device of a power electronic device according to claim 4, characterized in that: A sealing strip joint groove (18) is provided above the sealing rubber strip (17), and the sealing strip joint groove (18) and the upper packaging shell (1) are an integral structure.

6. The buckle structure of a gate device of a power electronic device according to claim 1, characterized in that: The upper packaging shell (1) and the lower packaging shell (2) are both made of polytetrafluoroethylene material.

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