MOS transistor of superimposed multi-layer direct insertion structure

Abstract

This invention discloses a superimposed multilayer through-hole MOSFET, relating to the field of MOSFET technology. It includes a MOSFET body with three pins electrically connected at equal intervals on one side wall. Each pin has a protective component on its outer side. Each pin includes a first pin and a second pin. The first pin has a sliding groove at its top, and the second pin slides within the sliding groove, with one end of the second pin extending from the sliding groove to form an extension. The protective component includes a fixed structure and a movable structure. During transportation, the fixed and movable structures can be combined to form a complete cylindrical structure outside the first pin and the housed second pin, preventing damage from collisions or compression with external objects. In use, the fixed and movable structures can be separated, providing protection to the first and second pins respectively.

Description

Technical Field

[0001] This invention relates to the field of MOSFET technology, specifically to a MOSFET with a superimposed multilayer through-hole structure. Background Technology

[0002] MOSFETs, or Insulating Field-Effect Transistors in integrated circuits, are commonly used in various electronic products such as inverters, solar controllers, electronic transformers, and power adapters. Existing MOSFETs have relatively long leads, and these leads are generally directly exposed, making them susceptible to damage from pressure from external objects.

[0003] A search revealed that patent CN218975441U discloses a MOSFET, including a MOSFET block, a fixing plate, pins, and connectors; the fixing plate is disposed on the MOSFET block, and the pins include a first pin and a second pin, with the first pin disposed on the MOSFET block. This patent can improve the situation where damage occurs during transportation due to the long pins.

[0004] However, the patent also has the following defects: the first pin and the second pin are axially slidingly connected. Due to the precision error in the processing, the first pin and the second pin may have an axial gap between them. Therefore, during use, vibration may cause the connection between the first pin and the second pin to be unstable. Secondly, the patent only shortens the pin length to protect the pin, and the protection effect needs to be improved.

[0005] A search revealed that patent CN117374032B discloses a superimposed multilayer through-hole structure MOSFET, including a MOSFET block body. Several groups of through-hole structure components are electrically connected at equal intervals on one side wall of the MOSFET block body. Two sets of protective components are symmetrically arranged on the side wall of the MOSFET block body near the through-hole structure components, and a connecting component connects the two sets of protective components. A magnetic suction component is installed on the side wall of the MOSFET block body near the connecting component. Although this patent can form protection outside the pins by setting protective components, it still has the following drawbacks: 1. Due to the small size of the MOSFET and the large number of protective component structures, manufacturing is difficult, and the size makes adjusting the pin length and providing protection inconvenient; 2. The protective components are spring structures, which can deform under impact during transportation, causing the pins to be damaged, thus the protective effect needs improvement. Summary of the Invention

[0006] The purpose of this invention is to provide a MOS transistor with a superimposed multilayer through-hole structure to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] The present invention provides a MOS transistor with a superimposed multilayer through-hole structure, including a MOS body, wherein three pins are electrically connected at equal intervals on one side wall of the MOS block body, and a protective component is provided on the outside of each pin;

[0009] The pin includes a first pin and a second pin. The top of the first pin is provided with a sliding groove. The second pin is slidably adapted to the sliding groove, and the end of the second pin away from the MOS body extends out from one end of the sliding groove to form an extension.

[0010] The protective assembly includes a fixed structure and a movable structure. The fixed structure includes a positioning ring fixedly mounted on the side wall of the MOS body and a first spiral strip connected to the positioning ring on the side away from the MOS body, with a first spiral gap formed on the first spiral strip. The movable structure includes a movable ring coaxial with the positioning ring and a second spiral strip connected to the movable ring on the side closer to the MOS body, with a second spiral gap formed on the second spiral strip. The first spiral strip is adapted to the second spiral gap, and the second spiral strip is adapted to the first spiral gap. The first spiral strip and the second spiral strip are slidably connected by a keyway structure, allowing the second spiral strip to move spirally in its spiral direction within the first spiral gap. A rotating ring is coaxially fixed to the inner side of the movable ring via a support rod, and the rotating ring is rotatably connected to the extension. The second spiral strip has an initial position within its spiral movement stroke within the first spiral gap. When the second spiral strip is in the initial position, the first spiral strip is fully adapted to the second spiral gap, and the second spiral strip is fully adapted to the first spiral gap.

[0011] Furthermore, the protective assembly also includes a locking structure for locking the spiral movement of the second spiral strip within the first spiral gap.

[0012] Furthermore, a first limiting conductor is fixedly disposed on the top of the first pin at the end away from the MOS body, and a second limiting conductor is fixedly disposed on the end of the second pin near the MOS body. The moving stroke of the movable structure is greater than the sliding stroke of the first pin.

[0013] Furthermore, each of the protective components is provided with a flexible strip on one side, one end of which is fixedly connected to the MOS body, and the other end of which is fixedly connected to the end of the first spiral strip away from the positioning ring.

[0014] Furthermore, the keyway structure includes a helical groove disposed in the thickness direction of the first helical strip, and a helical blade fixed on the second helical strip.

[0015] Furthermore, the thickness of the second spiral is greater than the thickness of the first spiral.

[0016] Furthermore, the locking structure includes a locking groove and a locking button. The locking grooves are evenly distributed on the first spiral strip, and the cross-section of the locking groove is a right-angled triangle. The locking button includes an L-shaped support strip fixed to the end of the second spiral strip away from the movable ring, and an insert block vertically inserted through the L-shaped support strip. The insert block corresponds to and fits the locking groove. The locking button also includes a preload spring for applying an elastic force to the insert block in the direction of the locking groove.

[0017] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0018] During transportation, the fixed structure and the movable structure can be combined to form a complete cylindrical structure. This cylindrical structure is located outside the first pin and the housed second pin, which can prevent the pin from colliding or being squeezed by external objects, thus preventing damage to the pin. In use, the fixed structure and the movable structure can be separated to form protection outside the first pin and the second pin, respectively.

[0019] In this invention, as the pin length increases, the movable structure moves synchronously with the second pin. When the second limiting conductor of the second pin contacts the first limiting conductor on the first pin, the movable structure can continue to rotate, causing the second spiral of the movable structure and the first spiral of the fixed structure to undergo a certain compression deformation. Then, the second spiral is locked by the locking structure. At this time, the elastic force generated by the compression of the first and second spirals can make the second limiting conductor stick tightly to the first limiting conductor, thus ensuring the stability of the connection between the second pin and the first pin.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a schematic diagram of the first state structure of the protective component of the present invention;

[0023] Figure 2 This is a schematic diagram of the second state structure of the protective component of the present invention;

[0024] Figure 3 yes Figure 1 A top-view structural diagram;

[0025] Figure 4 This is a schematic diagram of the first state structure of the protective component and pins after separation according to the present invention;

[0026] Figure 5 This is a schematic diagram of the second state structure of the protective component and pins after separation according to the present invention;

[0027] Figure 6 yes Figure 4 Another perspective structural diagram;

[0028] Figure 7 yes Figure 6 A schematic diagram of the partial structure at point A;

[0029] Figure 8 yes Figure 3 A schematic diagram of the CC-direction structure;

[0030] Figure 9 yes Figure 8 A schematic diagram of the partial structure at point B.

[0031] Figure 10 This is a top view structural diagram of embodiment 2 of the present invention.

[0032] Figure 11 This is a schematic diagram of the structure of the protective component of the present invention when it is bent.

[0033] In the picture:

[0034] 1-MOS body; 21-First pin; 211-Sliding groove; 22-Second pin; 221-Extension; 3-Protective assembly; 31-Fixing structure; 311-Positioning ring; 312-First spiral strip; 313-First spiral gap; 32-Modible structure; 321-Modible ring; 322-Second spiral strip; 323-Second spiral gap; 331-Spiral blade; 332-Spiral groove; 34-Rotating ring; 4-Locking structure; 41-Locking groove; 42-Locking button; 421-L-shaped support bar; 422-Insertion block; 423-Preload spring; 51-Second limiting conductor; 52-First limiting conductor; 6-Flexible strip. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0036] Example 1: Please refer to Figures 1-11This invention provides a multilayer through-hole MOSFET, including a MOSFET body 1. Three pins are electrically connected at equal intervals on one side wall of the MOSFET body 1, and a protective component 3 is disposed on the outside of each pin. The three pins are the source, gate, and drain of the MOSFET, respectively. The protective component 3 is located outside the pins and can effectively protect them to avoid damage to the pins.

[0037] Combination Figure 5 and Figure 6 As shown, the pin includes a first pin 21 and a second pin 22. The top of the first pin 21 is provided with a sliding groove 211. The second pin 22 is slidably adapted in the sliding groove 211, and the end of the second pin 22 away from the MOS body 1 extends out from one end of the sliding groove 211 to form an extension 221.

[0038] During transportation, the second pin 22 can slide into the sliding groove 211 of the first pin 21 to accommodate the second pin 22, thereby shortening the overall length of the pin (e.g., Figure 4 As shown), this improves the situation where the long pins are easily damaged during transportation; and in use, the second pin 22 can slide out from the sliding groove 211 of the first pin 21 to unfold the second pin 22, thereby increasing the length of the pin (as shown). Figure 5 As shown), to meet the needs of use.

[0039] To ensure effective protection of the pins during transportation and use, specifically, as shown in the following example... Figure 4 and Figure 5 As shown, the protective component 3 includes a fixed structure 31 and a movable structure 32. The fixed structure 31 includes a positioning ring 311 fixedly mounted on the side wall of the MOS body 1 and a first spiral bar 312 connected to the side of the positioning ring 311 away from the MOS body 1, with a first spiral gap 313 formed on the first spiral bar 312. The movable structure 32 includes a movable ring 321 coaxial with the positioning ring 311 and a second spiral bar 322 connected to the side of the movable ring 321 near the MOS body 1, with a second spiral gap 323 formed on the second spiral bar 322. The first spiral bar 312 is adapted to the second spiral bar 322. Within the helical gap 323, the second helical strip 322 is adapted to the first helical gap 313, and the first helical strip 312 and the second helical strip 322 are slidably connected by a keyway structure, allowing the second helical strip 322 to move helically along its helical direction within the first helical gap 313; a rotating ring 34 is coaxially fixed to the inner side of the movable ring 321 by a support rod, the rotating ring 34 is rotatably connected to the extension 221, and the rotating ring 34 is axially slidably locked to the extension 221; the second helical strip 322 has an initial position (e.g., within the stroke of its helical movement within the first helical gap 313) within the first helical gap 313. Figure 1 and Figure 4 (As shown); when the second spiral 322 is in the initial position, the first spiral 312 is fully adapted to the second spiral gap 323, and the second spiral 322 is fully adapted to the first spiral gap 313.

[0040] During transportation, the second spiral 322 of the movable structure 32 is in its initial position. At this time, the fixed structure 31 and the movable structure 32 can form a complete cylindrical structure. This cylindrical structure is located outside the first pin 21 and the housed second pin 22, which can prevent the pin from colliding or being squeezed by external objects, thus avoiding damage to the pin (e.g., Figure 1 (As shown).

[0041] In use, the movable structure 32 can be rotated to separate it from the fixed structure 31. Specifically, rotating the movable structure 32 causes the second spiral 322 to rotate. The rotating second spiral 322 moves spirally away from the MOS body 1 within the first spiral gap 313. At this time, the movable structure 32 undergoes axial displacement relative to the fixed structure 31. During this process, the movable ring 321, through the rotating ring 34, can pull the extension 221 away from the MOS body 1, thereby causing the second pin 22 to slide out synchronously from the sliding groove 211 of the first pin 21, thus increasing the pin length to meet usage requirements. During the increase in pin length, the fixed structure 31 remains outside the first pin 21, thus protecting the first pin 21. The movable structure 32 moves synchronously with the second pin 22, and its position outside the second pin 22 provides protection for it (e.g., Figure 2 (As shown).

[0042] To complete the position locking of the second pin 22, such as Figure 4 As shown, the protective component 3 also includes a locking structure 4, which is used to lock the spiral movement of the second spiral strip 322 within the first spiral gap 313. When the movement of the second spiral strip 322 is locked by the locking structure 4, the position of the second pin 22 can be fixed simultaneously.

[0043] To ensure the stability of the pin connection during use, since the second pin 22 may experience axial clearance with the sliding groove 211 due to machining precision errors, vibration during use may cause instability in the connection between the first pin 21 and the second pin 22 (the second pin 22 and the first pin 21 are in an axial sliding fit). Figure 4 and Figure 5As shown, in this embodiment, a first limiting conductor 52 is fixedly disposed on the top of the first pin 21 away from the MOS body 1, and a second limiting conductor 51 is fixedly disposed on the end of the second pin 22 close to the MOS body 1. The moving stroke of the movable structure 32 is greater than the sliding stroke of the first pin 21.

[0044] Based on the above design, as the pin length increases, the movable structure 32 moves synchronously with the second pin 22. When the second limiting conductor 52 of the second pin 22 contacts the first limiting conductor 51 on the first pin 21, the movable structure 32 can continue to rotate, causing the second spiral 322 of the movable structure 32 and the first spiral 312 of the fixed structure 31 to undergo a certain compression deformation. Then, the second spiral 322 is locked by the locking structure 4. At this time, the elastic force generated by the compression of the first spiral 312 and the second spiral 322 can make the second limiting conductor 52 stick tightly to the first limiting conductor 51, so as to ensure the stability of the connection between the second pin 22 and the first pin 21.

[0045] like Figure 8 and Figure 9 As shown, in this specific embodiment, the keyway structure includes a helical groove 332 disposed in the thickness direction of the first helical strip 312, and a helical blade 331 fixed on the second helical strip 322. This design is to prevent the first helical strip 312 and the second helical strip 322 from separating.

[0046] In this embodiment, the thickness of the second spiral strip 322 is greater than the thickness of the first spiral strip 312.

[0047] Combination Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, the locking structure 4 includes a locking groove 41 and a locking button 42. The locking groove 41 is evenly distributed on the first spiral bar 312. The cross-section of the locking groove 41 is a right-angled triangle. The locking button 42 includes an L-shaped support bar 421 fixed to one end of the second spiral bar 322 away from the movable ring 321, and an insert 422 vertically inserted through the L-shaped support bar 421. The insert 422 corresponds to and is adapted to the locking groove 41. The locking button 42 also includes a preload spring 423 for giving the insert 422 an elastic force toward the locking groove 41.

[0048] Based on the above configuration, when the movable structure 32 is rotated to separate from the fixed structure 31, the insert block 422 can move out of the locking groove 41 through the cooperation between its inclined surface and the inclined surface of the locking groove 41, allowing the second spiral bar 322 to rotate normally. When the movable structure 32 needs to rotate in the opposite direction to engage with the fixed structure 31, the right-angled surface of the insert block 422 can abut against the right-angled surface of the locking groove 41 to prevent the movable structure 32 from rotating in the opposite direction. That is, the locking structure 4 has a one-way locking function, which allows the movable structure 32 to rotate and separate from the fixed structure 31, and prevents the movable structure 32 from rotating and engaging with the fixed structure 31. Therefore, during use, when the movable structure 32 is in a suitable position, it can automatically lock itself.

[0049] Example 2: As Figure 10 and Figure 11 As shown, based on Embodiment 1, since the pin protection structure of the MOS body in the prior art can provide specific protection while not allowing the pin to be bent as required, the protection structure often needs to be peeled off when bending is required. To solve this problem, the protection component 3 provided in this embodiment can provide protection while bending. Specifically, in the transportation state, the first pin 22 can slide into the sliding groove 211 of the first pin 21 to house the second pin 22. At the same time, the fixed structure 31 and the movable structure 32 can form a complete cylindrical structure. This cylindrical structure is located outside the first pin 21 and the housed second pin 22, which can prevent the pin from colliding or being squeezed by external objects, thus preventing damage to the pin.

[0050] In use, the second pin 22 can slide out from the sliding groove 211 of the first pin 21 to unfold the second pin 22, thereby increasing the length of the pin (e.g., Figure 5 As shown), to meet the needs of use, the fixed structure 31 is always outside the first pin 21, thereby protecting the first pin 21, while the movable structure 32 moves synchronously with the second pin 22. The movable structure 32 is outside the second pin 22 and can protect the second pin 22.

[0051] In this embodiment, each of the protective components 3 is provided with a flexible strip 6 on one side. The flexible strip 6 can maintain the posture when it is bent after bending. One end of the flexible strip 6 is fixedly connected to the MOS body 1, and the other end of the flexible strip 6 is fixedly connected to the end of the first spiral strip 312 away from the positioning ring 311.

[0052] Based on the above design, when a pin needs to be bent after it is extended, the first pin 21 part of the pin can be bent. When bending, the first spiral 312 and the flexible strip 6 of the fixing structure 31 can bend adaptively. When bent to a certain angle, the flexible strip 6 and the first pin 21 can maintain the bending angle and prevent the first spiral 312 from recovering its deformation.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A MOSFET with a superimposed multilayer through-hole structure, comprising a MOSFET body, wherein three pins are electrically connected at equal intervals on one side wall of the MOSFET body, and a protective component is provided on the outside of each pin; Its features are, The pin includes a first pin and a second pin. The top of the first pin is provided with a sliding groove. The second pin is slidably adapted to the sliding groove, and the end of the second pin away from the MOS body extends out from one end of the sliding groove to form an extension. The protective assembly includes a fixed structure and a movable structure. The fixed structure includes a positioning ring fixedly mounted on the side wall of the MOS body and a first spiral strip connected to the positioning ring on the side away from the MOS body, with a first spiral gap formed on the first spiral strip. The movable structure includes a movable ring coaxial with the positioning ring and a second spiral strip connected to the movable ring on the side closer to the MOS body, with a second spiral gap formed on the second spiral strip. The first spiral strip is adapted to the second spiral gap, and the second spiral strip is adapted to the first spiral gap. The first spiral strip and the second spiral strip are slidably connected by a keyway structure, allowing the second spiral strip to move spirally in its spiral direction within the first spiral gap. A rotating ring is coaxially fixed to the inner side of the movable ring via a support rod, and the rotating ring is rotatably connected to the extension. The second spiral strip has an initial position within its spiral movement stroke within the first spiral gap. When the second spiral strip is in its initial position, the first spiral strip is fully adapted to the second spiral gap, and the second spiral strip is fully adapted to the first spiral gap. The keyway structure includes a helical groove disposed in the thickness direction of the first helical strip, and a helical blade fixed on the second helical strip.

2. The MOS transistor with a superimposed multilayer through-hole structure according to claim 1, characterized in that, The protective assembly also includes a locking structure for locking the spiral movement of the second spiral strip within the first spiral gap.

3. The MOS transistor with a superimposed multilayer through-hole structure according to claim 1, characterized in that, A first limiting conductor is fixedly disposed on the top of the first pin at the end away from the MOS body, and a second limiting conductor is fixedly disposed on the end of the second pin near the MOS body. The moving stroke of the movable structure is greater than the sliding stroke of the first pin.

4. The MOS transistor with a superimposed multilayer through-hole structure according to claim 1, characterized in that, Each of the protective components is provided with a flexible strip on one side. One end of the flexible strip is fixedly connected to the MOS body, and the other end of the flexible strip is fixedly connected to the end of the first spiral strip away from the positioning ring.

5. The MOS transistor with a superimposed multilayer through-hole structure according to claim 1, characterized in that, The thickness of the second spiral is greater than the thickness of the first spiral.

6. The MOS transistor with a superimposed multilayer through-hole structure according to claim 2, characterized in that, The locking structure includes a locking groove and a locking button. The locking grooves are evenly distributed on the first spiral strip. The cross-section of the locking groove is a right-angled triangle. The locking button includes an L-shaped support strip fixed to the end of the second spiral strip away from the movable ring, and a plug vertically inserted through the L-shaped support strip. The plug corresponds to and fits the locking groove. The locking button also includes a preload spring for applying an elastic force to the plug in the direction of the locking groove.

Images