Metal oxide semiconductor (MOS) tube with stacked multi-layer direct insertion structure

Abstract

The invention, which relates to the technical field of the MOS tube, discloses an MOS tube with a stacked multilayer direct insertion structure, comprising an MOS body, one side wall of the MOS body is electrically connected with three pins at equal intervals, and the outer side of each pin is provided with a protection assembly; the pins comprise a first pin and a second pin, a sliding groove is formed in the top of the first pin, the second pin is arranged in the sliding groove in a sliding fit mode, and the end, away from the MOS body, of the second pin extends out of one end of the sliding groove to form an extension part; the protection assembly comprises a fixed structure and a movable structure. In the transportation process, the fixed structure and the movable structure can be combined to form a complete barrel-shaped structure, the barrel-shaped structure is located outside the first pin and the stored second pin, damage to the pins caused by collision or extrusion between the pins and an external object can be avoided, the fixed structure and the movable structure can be separated in the use process, and therefore the service life of the pin is prolonged. And protection is respectively formed outside the first pin and the second pin.

Description

Technical Field

[0001] The present invention relates to the technical field of MOS tubes, and in particular to a MOS tube with a stacked multi-layer direct insertion structure. Background Art

[0002] MOS tube, that is, an insulating field effect tube in an integrated circuit, is generally used in various electronic products such as inverter power supplies, solar controllers, electronic transformers and power adapters. The pins of existing MOS tubes are relatively long, and the pins are generally directly exposed to the outside, which can easily cause the pins to be squeezed and damaged by external objects.

[0003] After searching, patent CN218975441U discloses a MOS tube, including a MOS block, a fixing plate, a pin and a connecting piece; the fixing plate is arranged on the MOS block, the pin includes a first pin and a second pin, and the first pin is arranged on the MOS block. This patent can improve the situation where the pins are damaged due to long pins during transportation.

[0004] However, this patent still has the following defects: the first pin and the second pin are axially slidingly matched, and an axial gap may be generated between the first pin and the second pin due to precision errors in processing. Therefore, during use, vibration may cause the connection between the first pin and the second pin to be unstable. Secondly, this patent only shortens the length of the pin to protect the pin, and the protection effect needs to be improved.

[0005] After searching, patent CN117374032B discloses a MOS tube with a stacked multi-layer plug-in structure, including a MOS block body, a side wall of the MOS block body electrically connected with a plurality of plug-in structure components at equal intervals, two groups of protective components symmetrically arranged on a side wall of the MOS block body close to the plug-in structure components, a connecting component is connected between the two groups of protective components, and a magnetic suction component is installed on a side wall of the MOS block body close to the connecting component. Although this patent can form protection outside the pin by setting a protective component, this patent still has the following defects: 1. Due to the small size of the MOS tube and the large number of protective component structures, it is difficult to manufacture, and when adjusting and protecting the length of the pin, due to the size, it is inconvenient to operate; 2. Its protective component is a spring structure, and collision with foreign objects during transportation will cause the spring structure to deform, thereby causing the pin to be hit, and the protective effect needs to be improved. Summary of the invention

[0006] The object of the present invention is to provide a MOS tube with a stacked multi-layer plug-in structure to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: The present invention provides a stacked multi-layer plug-in structure MOS tube, comprising a MOS body, one side wall of the MOS body is electrically connected with three pins at equal intervals, and a protective component is arranged on the outer side of each pin; 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 fitted in the sliding groove, and one end of the second pin away from the MOS body extends out from one end of the sliding groove to form an extension portion; The protective component includes a fixed structure and a movable structure, wherein the fixed structure includes a positioning ring fixedly assembled on the side wall of the MOS body and a first spiral strip connected to the side of the positioning ring away from the MOS body, and a first spiral gap is 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 side of the movable ring close to the MOS body, and a second spiral gap is formed on the second spiral strip; the first spiral strip is adapted in the second spiral gap, the second spiral strip is adapted in the first spiral gap, and the first spiral strip and the second spiral strip are slidably connected by a keyway structure, so that the second spiral strip can move spirally along its spiral direction in the first spiral gap; a rotating ring is coaxially fixed to the inner side of the movable ring through a support rod, and the rotating ring is rotatably connected to the extension part; the second spiral strip has an initial position within the stroke of spiral movement in the first spiral gap; when the second spiral strip is in the initial position, the first spiral strip is completely adapted in the second spiral gap, and the second spiral strip is completely adapted in the first spiral gap.

[0008] Furthermore, the protection component also includes a locking structure, and the locking structure is used to lock the spiral movement of the second spiral strip in the first spiral gap.

[0009] Furthermore, a first limiting conductor is fixedly provided on the top of one end of the first pin away from the MOS body, a second limiting conductor is fixedly provided on one end of the second pin close to the MOS body, and the moving stroke of the active structure is greater than the sliding stroke of the first pin.

[0010] Furthermore, a bendable strip is provided on one side of each of the protective components, one end of the bendable strip is fixedly connected to the MOS body, and the other end of the bendable strip is fixedly connected to an end of the first spiral strip away from the positioning ring.

[0011] Furthermore, the keyway structure includes a spiral groove arranged in the thickness direction of the first spiral strip, and a spiral sheet fixed on the second spiral strip.

[0012] Furthermore, the thickness of the second spiral strip is greater than the thickness of the first spiral strip.

[0013] Furthermore, 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 an insert block vertically penetrating the L-shaped support strip, the insert block corresponds to and fits with the locking groove, and the locking button also includes a pre-tightening spring for giving the insert block an elastic force in the direction of the locking groove.

[0014] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: During transportation, the fixed structure and the movable structure of the present invention can be combined to form a complete cylindrical structure. The cylindrical structure is located outside the first pin and the accommodated second pin, which can prevent the pin from colliding or being squeezed by external objects and causing damage to the pin. When in use, the fixed structure and the movable structure can be separated to form protection outside the first pin and the second pin respectively.

[0015] In the process of increasing the length of the pin of the present invention, the movable structure and the second pin keep moving synchronously. 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, so that the second spiral strip of the movable structure and the first spiral strip of the fixed structure undergo a certain compression deformation, and then the second spiral strip is locked by the locking structure. At this time, the elastic force generated by the compression of the first spiral strip and the second spiral strip can make the second limiting conductor close to the first limiting conductor, so as to ensure the stability of the connection between the second pin and the first pin.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 It is a schematic diagram of the structure of the protection component in the first state of the present invention; Figure 2 is a schematic diagram of the structure of the protection component of the present invention in the second state; Figure 3 yes Figure 1 A schematic diagram of a top view structure; Figure 4 It is a schematic diagram of the structure of the first state after the protection component and the pin of the present invention are separated; Figure 5 It is a schematic diagram of the structure of the second state after the protection component and the pin of the present invention are separated; Figure 6 yes Figure 4 Another perspective structural diagram of; Figure 7 yes Figure 6 Schematic diagram of the local structure at A; Figure 8 yes Figure 3 Schematic diagram of CC structure; Fig. 9 yes Figure 8 Schematic diagram of the local structure at location B.

[0019] Fig.10 It is a schematic diagram of a top view of the structure of implementation 2 of the present invention.

[0020] Fig.11 It is a schematic diagram of the structure of the protective component of the present invention when it is bent.

[0021] In the figure: 1-MOS body; 21-first pin; 211-sliding groove; 22-second pin; 221-extension; 3-protective component; 31-fixed structure; 311-positioning ring; 312-first spiral strip; 313-first spiral gap; 32-movable structure; 321-movable ring; 322-second spiral strip; 323-second spiral gap; 331-spiral sheet; 332-spiral groove; 34-rotating ring; 4-locking structure; 41-locking groove; 42-locking button; 421-L-shaped support strip; 422-insert block; 423-preload spring; 51-second limiting conductor; 52-first limiting conductor; 6-bendable strip. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] Example 1: Please refer to Figure 1-Figure 11 The present invention provides a MOS tube with a stacked multi-layer plug-in structure, comprising a MOS body 1, on one side wall of which three pins are electrically connected at equal intervals, and a protective component 3 is arranged outside each pin. The three pins are respectively the source, gate and drain of the MOS tube, and the protective component 3 is located outside the pins to effectively protect them to prevent the pins from being damaged.

[0024] Combination Figure 5 and Figure 6As shown, the pin includes a first pin 21 and a second pin 22. A sliding groove 211 is provided on the top of the first pin 21. The second pin 22 is slidably fitted in the sliding groove 211, and an end of the second pin 22 away from the MOS body 1 extends from one end of the sliding groove 211 to form an extension portion 221.

[0025] During transportation, the second pin 22 can slide into the sliding groove 211 of the first pin 21 to store the second pin 22, thereby shortening the overall length of the pin (eg Figure 4 As shown), the pins are easily damaged during transportation due to their long length; when in use, the second pin 22 can slide out of the sliding slot 211 of the first pin 21 to expand the second pin 22, thereby increasing the length of the pin (as shown). Figure 5 to meet the needs of use.

[0026] In order to effectively protect the pins during transportation and use, the protection component 3 can be used. Figure 4 and Figure 5 As shown, the protection component 3 includes a fixed structure 31 and a movable structure 32, wherein the fixed structure 31 includes a positioning ring 311 fixedly assembled on the side wall of the MOS body 1 and a first spiral strip 312 connected to the side of the positioning ring 311 away from the MOS body 1, and a first spiral gap 313 is formed on the first spiral strip 312; the movable structure 32 includes a movable ring 321 coaxial with the positioning ring 311 and a second spiral strip 322 connected to the side of the movable ring 321 close to the MOS body 1, and a second spiral gap 323 is formed on the second spiral strip 322; the first spiral strip 312 is adapted to fit in the second spiral strip In the spiral gap 323, the second spiral strip 322 is adapted to the first spiral gap 313, and the first spiral strip 312 and the second spiral strip 322 are slidably connected by a keyway structure, so that the second spiral strip 322 can spirally move along its spiral direction in the first spiral gap 313; a rotating ring 34 is coaxially fixed to the inner side of the movable ring 321 through a support rod, and the rotating ring 34 is rotatably connected to the extension part 221, and the rotating ring 34 and the extension part 221 are axially locked in sliding; the second spiral strip 322 has an initial position (such as Figure 1 and Figure 4 As shown); when the second spiral strip 322 is in the initial position, the first spiral strip 312 is completely adapted in the second spiral gap 323, and the second spiral strip 322 is completely adapted in the first spiral gap 313.

[0027] During transportation, the second spiral strip 322 of the movable structure 32 is in the initial position. At this time, the fixed structure 31 and the movable structure 32 can form a complete cylindrical structure, which is located outside the first pin 21 and the second pin 22 received, and can prevent the pin from colliding or squeezing with external objects, thereby preventing the pin from being damaged (such as Figure 1 as shown).

[0028] When in use, the movable structure 32 can be rotated to separate the movable structure 32 from the fixed structure 31. Specifically, the movable structure 32 is rotated to rotate the second spiral strip 322. The rotation of the second spiral strip 322 will spirally move in the first spiral gap 313 toward the side away from the MOS body 1. At this time, the movable structure 32 is axially displaced relative to the fixed structure 31. During this process, the movable ring 321 can pull the extension portion 221 to move away from the MOS body 1 through the rotating ring 34, so that the second pin 22 can slide out of the sliding groove 211 of the first pin 21 synchronously, thereby increasing the length of the pin to meet the use requirements. During the process of increasing the length of the pin, the fixed structure 31 is always outside the first pin 21, thereby protecting the first pin 21, and the movable structure 32 keeps moving synchronously with the second pin 22. The movable structure 32 is outside the second pin 22 and can protect the second pin 22 (such as Figure 2 as shown).

[0029] To complete the position locking of the second pin 22, as Figure 4 As shown, the protection component 3 further includes a locking structure 4, which is used to lock the spiral movement of the second spiral strip 322 in 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 synchronously.

[0030] In order to ensure the stability of the pin connection during use, the second pin 22 may have an axial gap with the sliding groove 211 due to the precision error in processing. Therefore, during use, vibration may cause the connection between the first pin 21 and the second pin 22 to be unstable (the second pin 22 axially slides with the first pin 21). Figure 4 and Figure 5 As shown, in this embodiment, a first limiting conductor 52 is fixedly provided on the top of one end of the first pin 21 away from the MOS body 1, and a second limiting conductor 51 is fixedly provided on one end of the second pin 22 close to the MOS body 1, and the moving stroke of the movable structure 32 is greater than the sliding stroke of the first pin 21.

[0031] Based on the above design, in the process of increasing the pin length, the movable structure 32 and the second pin 22 keep moving synchronously. 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, so that the second spiral strip 322 of the movable structure 32 and the first spiral strip 312 of the fixed structure 31 undergo a certain compression deformation, and then the second spiral strip 322 is locked by the locking structure 4. At this time, the elastic force generated by the compression of the first spiral strip 312 and the second spiral strip 322 can make the second limiting conductor 52 close 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.

[0032] like Figure 8 and Fig. 9 As shown, in this specific embodiment, the keyway structure includes a spiral groove 332 arranged in the thickness direction of the first spiral strip 312, and a spiral sheet 331 fixed on the second spiral strip 322. Based on the above design, the first spiral strip 312 and the second spiral strip 322 are prevented from being separated.

[0033] In this embodiment, the thickness of the second spiral strip 322 is greater than the thickness of the first spiral strip 312 .

[0034] 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 grooves 41 are evenly distributed on the first spiral strip 312. The cross-section of the locking groove 41 is a right-angled triangle. The locking button 42 includes an L-shaped support strip 421 fixed to the end of the second spiral strip 322 away from the movable ring 321, and an insert block 422 vertically penetrating the L-shaped support strip 421. The insert block 422 corresponds to and fits with the locking groove 41. The locking button 42 also includes a preload spring 423 for giving the insert block 422 an elastic force toward the locking groove 41.

[0035] Based on the above arrangement, when the movable structure 32 is rotated to separate the movable structure 32 from the fixed structure 31, the plug block 422 can be moved out of the locking groove 41 through the cooperation between its inclined surface and the inclined surface of the locking groove 41 so that the second spiral strip 322 can rotate normally. When the movable structure 32 needs to rotate in the opposite direction to combine with the fixed structure 31, the right-angled surface of the plug 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 can allow the movable structure 32 to rotate and separate from the fixed structure 31, and prevent the movable structure 32 from rotating and combining with the fixed structure 31. Therefore, during use, when the movable structure 32 is in a suitable position, it can automatically complete the locking of it.

[0036] Example 2: Fig.10 and Fig.11 As shown, on the basis of Example 1, since the pin protection structure provided in the MOS body in the prior art cannot make the pin bend as required while playing a specific protection function, it is often necessary to peel off the protection structure when bending is required. In order to solve this problem, the protection component 3 provided in this embodiment can play a protective role while bending. Specifically, in the transportation state, the second pin 22 can slide into the sliding groove 211 of the first pin 21 to accommodate the second pin 22. At the same time, the fixed structure 31 and the movable structure 32 can form a complete cylindrical structure. The cylindrical structure is outside the first pin 21 and the accommodated second pin 22, which can prevent the pin from colliding or squeezing with external objects, thereby causing damage to the pin; When in use, the second pin 22 can slide out of the sliding slot 211 of the first pin 21 to expand the second pin 22, thereby increasing the length of the pin (eg Figure 5 As shown), to meet the needs of use, at the same time, the fixed structure 31 is always outside the first pin 21, so as to protect the first pin 21, and the movable structure 32 keeps synchronous movement with the second pin 22, and the movable structure 32 is outside the second pin 22 to protect the second pin 22.

[0037] In this embodiment, a bendable strip 6 is provided on one side of each of the protective components 3, and the bendable strip 6 can maintain the posture when being bent after being bent. One end of the bendable strip 6 is fixedly connected to the MOS body 1, and the other end of the bendable strip 6 is fixedly connected to the end of the first spiral strip 312 away from the positioning ring 311.

[0038] Based on the above design, when a pin needs to be bent after being stretched, the first pin 21 part of the pin can be bent. When bending, the first spiral strip 312 of the fixed structure 31 and the bendable strip 6 can bend adaptively. When bent to a certain angle, the bendable strip 6 and the first pin 21 can maintain the bending angle and prevent the first spiral strip 312 from recovering its deformation.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A MOS tube with a stacked multi-layer plug-in structure, comprising 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 arranged on the outer side of each pin; It is characterized in that 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 fitted in the sliding groove, and one end of the second pin away from the MOS body extends out from one end of the sliding groove to form an extension portion; The protective component includes a fixed structure and a movable structure, wherein the fixed structure includes a positioning ring fixedly assembled on the side wall of the MOS body and a first spiral strip connected to the side of the positioning ring away from the MOS body, and a first spiral gap is 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 side of the movable ring close to the MOS body, and a second spiral gap is formed on the second spiral strip; the first spiral strip is adapted in the second spiral gap, the second spiral strip is adapted in the first spiral gap, and the first spiral strip and the second spiral strip are slidably connected by a keyway structure, so that the second spiral strip can move spirally along its spiral direction in the first spiral gap; a rotating ring is coaxially fixed to the inner side of the movable ring through a support rod, and the rotating ring is rotatably connected to the extension part; the second spiral strip has an initial position within the stroke of spiral movement in the first spiral gap; when the second spiral strip is in the initial position, the first spiral strip is completely adapted in the second spiral gap, and the second spiral strip is completely adapted in the first spiral gap.

2. The MOS tube of the stacked multi-layer plug-in structure according to claim 1, characterized in that: The protection assembly further comprises a locking structure, and the locking structure is used to lock the spiral movement of the second spiral strip in the first spiral gap.

3. The MOS tube of the stacked multi-layer plug-in structure according to claim 1, characterized in that: A first limiting conductor is fixedly arranged on the top of one end of the first pin away from the MOS body, a second limiting conductor is fixedly arranged on one end of the second pin close to the MOS body, and the moving stroke of the active structure is greater than the sliding stroke of the first pin.

4. The MOS tube of the stacked multi-layer plug-in structure according to claim 1, characterized in that: A bendable strip is provided on one side of each protection component, one end of the bendable strip is fixedly connected to the MOS body, and the other end of the bendable strip is fixedly connected to an end of the first spiral strip away from the positioning ring.

5. The MOS tube of the stacked multi-layer direct-insertion structure according to claim 1, characterized in that: The keyway structure includes a spiral groove arranged in the thickness direction of the first spiral strip, and a spiral sheet fixed on the second spiral strip.

6. The MOS tube of the stacked multi-layer plug-in structure according to claim 1, characterized in that: The thickness of the second spiral strip is greater than the thickness of the first spiral strip.

7. The MOS tube of the stacked multi-layer plug-in 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 an insert block vertically penetrating the L-shaped support strip. The insert block corresponds to and fits the locking groove. The locking button also includes a pre-tightening spring for giving the insert block an elastic force in the direction of the locking groove.

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