MOS electrostatic protection device

Abstract

The utility model relates to the technical field of MOS (Metal Oxide Semiconductor) electrostatic protection, in particular to an MOS electrostatic protection device, which comprises a shell and a tube body, the tube body is arranged in the shell, the top end of the tube body is provided with a mounting plate, the surface of the mounting plate is provided with a through hole, the top end of the shell is provided with a top plate, the mounting plate penetrates through the top plate, and the top plate is provided with a through hole. A first connecting hole is formed in the top end of the top plate, a connecting column is inserted into the first connecting hole, and a stainless steel column is fixed to the top end of the connecting column. The beneficial effects of the utility model are that the height position of the second protection cylinder is adjusted, so that the first protection cylinder and the second protection cylinder provide sufficient and good protection for the pins, and static electricity on the surfaces of the pins is reduced; the stainless steel column is convenient to replace and maintain, anti-collision and anti-static protection on the surface of the stainless steel column is improved through the rubber sleeve, and the safety of the stainless steel column for conducting static electricity outwards is conveniently improved.

Description

Technical Field

[0001] The utility model relates to the technical field of MOS electrostatic protection, in particular to a MOS electrostatic protection device. Background Art

[0002] MOS tube refers to metal-oxide semiconductor field-effect transistor, which is a field-effect transistor that can be widely used in analog circuits and digital circuits. MOS tube is a device that is sensitive to electrostatic discharge (ESD). It is easily damaged by the threat of static electricity in the application circuit. In order to prevent ESD from damaging the device, anti-ESD devices are usually set on the MOS tube.

[0003] As the feature size of semiconductor integrated circuit manufacturing processes becomes smaller and smaller, the size of chip units is also getting smaller and smaller, and the anti-static ability of chips is becoming more and more important. Electrostatic discharge can cause permanent damage to semiconductor components and computer systems, thereby affecting the circuit function of integrated circuits and causing electronic products to malfunction. Therefore, some protection measures or functions must be designed to protect chips from damage caused by electrostatic discharge.

[0004] For example, the prior art Chinese patent publication number "CN220065693U" provides a MOS electrostatic protection device, including: a tube body and a shell arranged outside the tube body, the top and bottom of the tube body are respectively installed with a mounting plate and a plurality of pins, a through hole is opened on the front of the mounting plate, and a protective cover is provided at the connection between the plurality of pins and the tube body; the shell includes a bottom plate and a cover plate, a stainless steel column is installed on the cover plate, and a wire is provided at the end of the stainless steel column, and an adhesive is also provided at the end of the wire, the bottom plate and the cover plate are respectively provided with a plurality of snap-fit ​​grooves and snap-fit ​​plates in the circumferential direction, and a plurality of microporous structures and buffer strips are respectively provided on the outer surface and the inner surface of the shell.

[0005] The device maintains the humidity of the environment around the MOS tube by setting up a microporous structure and a buffer strip to reduce the generation of static electricity. At the same time, it further ensures the conduction of static electricity through stainless steel columns and wires to protect the MOS tube from being broken down by static electricity.

[0006] In the existing MOS electrostatic protection device, during the process of conducting static electricity on the surface of the shell through the stainless steel column and the wire, the outer surface of the stainless steel column is not provided with good anti-static protection and anti-collision protection, which makes the surface of the stainless steel column easily damaged by collision, and is not sufficiently insulated during the process of conducting static electricity outward, which affects the outward transmission of static electricity on the stainless steel column. At the same time, the pin is installed at the bottom end of the MOS tube body, and only a fixed protective cover structure is provided. The length of the protective cover is not flexibly adjusted, which affects the protection of the protective structure to the overall protection of the pin and cannot provide sufficient protection for the pin. Utility Model Content

[0007] The purpose of the utility model is to solve the shortcomings in the prior art that the pins are installed at the bottom of the MOS tube body, only a fixed protective cover structure is provided, the length of the protective cover is not flexible enough to adjust, which affects the protection of the protective structure to the overall pin and cannot provide sufficient protection for the pin, and a MOS electrostatic protection device is proposed.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A MOS electrostatic protection device is designed, including a shell and a tube body, the tube body is installed inside the shell, a mounting plate is provided at the top end of the tube body, a through hole is opened on the surface of the mounting plate, a top plate is installed at the top end of the shell, the mounting plate passes through the top plate, a first connecting hole is opened on the top end of the top plate, a connecting column is inserted into the inside of the first connecting hole, a stainless steel column is fixed to the top end of the connecting column, a wire is connected to the top end of the stainless steel column, a rubber sleeve is sleeved on the surface of the stainless steel column, a pin is installed at the bottom end of the tube body, a first mounting hole is opened at the bottom end of the shell, the pin slides through the first mounting hole, a first protective cylinder is installed at the bottom end of the shell and at a position outside the first mounting hole, a second mounting hole is opened in the middle of the first protective cylinder, and an adjustment groove is opened on the outside of the second mounting hole.

[0010] Furthermore, the adjustment groove is a circular ring groove structure, and a second protective tube is slidably installed inside the adjustment groove, and the second protective tube is a cylindrical structure.

[0011] Furthermore, a rubber ring is adhered to the bottom end of the second protective tube, a third mounting hole is opened in the middle of the rubber ring, and the pin passes through the second mounting hole, the second protective tube and the third mounting hole.

[0012] Furthermore, a connecting plate is fixed to the top end of the side surface of the first protective tube, and a second connecting hole is opened on the surface of the connecting plate.

[0013] Furthermore, a third connecting hole is opened at the bottom end of the shell, the third connecting hole is located outside the first mounting hole, the third connecting hole is aligned with the second connecting hole, and the first bolt is inserted into the second connecting hole and the third connecting hole.

[0014] Furthermore, a fifth connecting hole is opened on the outer side of the first protective tube, and the fifth connecting hole is a threaded hole structure. A second bolt is inserted into the fifth connecting hole, and the inner end of the second bolt presses tightly against the outer side of the second protective tube.

[0015] Furthermore, a fourth connecting hole is opened on the side of the shell, and the fourth connecting hole is a threaded hole structure, and a third bolt passes through the inside of the fourth connecting hole.

[0016] Furthermore, a tightening block is sleeved on the inner end of the third bolt, the tightening block is made of rubber material, and the tightening block is tightened against the outer side of the tube body.

[0017] The utility model provides a MOS electrostatic protection device, which has the following beneficial effects:

[0018] 1. The utility model installs a first protective tube at the bottom end of the shell through a first bolt and a connecting plate, and can adjustably install a second protective tube at the bottom end of the first protective tube through an adjusting groove and a second bolt, and a rubber ring is adhered to the bottom end of the second protective tube. In this way, the pin is installed at the bottom end of the MOS tube body, and the shell is installed on the outside of the MOS tube body. The pin passes downward through the first mounting hole at the bottom end of the shell, and passes through the second mounting hole inside the first protective tube, the second protective tube and the third mounting hole in the middle of the rubber ring. In this way, the second protective tube can be slid up and down along the adjusting groove to adjust the height position of the second protective tube, and then the first protective tube and the second protective tube provide sufficient and good protection for the pin, reducing the generation of static electricity on the surface of the pin.

[0019] 2. The MOS tube body of the utility model is installed inside the outer shell and the top plate, and the stainless steel column is installed by plugging and connecting the connecting column with the first connecting hole bolt. Therefore, the stainless steel column can be detachably installed and connected, and it is convenient to replace and maintain the stainless steel column. At the same time, the rubber sleeve is tightly sleeved on the surface of the stainless steel column. Therefore, the rubber sleeve improves the anti-collision and anti-static protection of the surface of the stainless steel column, which is convenient to improve the safety of the stainless steel column in conducting static electricity to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A magnified image of point A;

[0022] Figure 3 For this utility model Figure 2 Enlarged view of point C;

[0023] Figure 4 For this utility model Figure 2 The enlarged view of point D;

[0024] Figure 5 For this utility model Figure 1 A magnified view of point B;

[0025] Figure 6 For this utility model Figure 1 Schematic diagram of the partial structure of the first protective tube and the second protective tube.

[0026] In the figure: 1. outer shell; 2. third bolt; 3. tube body; 4. tightening block; 5. pin; 6. rubber ring; 7. second protective tube; 8. adjusting groove; 9. first protective tube; 10. stainless steel column; 11. rubber sleeve; 12. wire; 13. through hole; 14. mounting plate; 15. top plate; 16. third mounting hole; 17. first mounting hole; 18. second mounting hole; 19. fifth connecting hole; 20. second bolt; 21. third connecting hole; 22. first bolt; 23. second connecting hole; 24. connecting plate; 25. fourth connecting hole; 26. connecting column; 27. first connecting hole. DETAILED DESCRIPTION

[0027] 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 of the embodiments.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A MOS electrostatic protection device shown in the figure includes a shell 1 and a tube body 3. The shell 1 is made of one of polyvinyl chloride and epoxy resin. The tube body 3 is installed inside the shell 1. A mounting plate 14 is provided at the top of the tube body 3. A through hole 13 is opened on the surface of the mounting plate 14. A top plate 15 is installed at the top of the shell 1. The mounting plate 14 passes through the top plate 15.

[0029] In detail, a first connecting hole 27 is opened at the top of the top plate 15, and the first connecting hole 27 is a bolt hole structure. A connecting column 26 is inserted into the inside of the first connecting hole 27, and the connecting column 26 is a threaded column structure, and is threadedly mounted and connected with the first connecting hole 27, so as to facilitate the disassembly, installation, replacement and maintenance of the stainless steel column 10; a stainless steel column 10 is fixed to the top of the connecting column 26, and a wire 12 is connected to the top of the stainless steel column 10, and the static electricity existing on the surface of the outer shell 1 is conducted outwardly through the stainless steel column 10 and the wire 12; and, a rubber sleeve 11 is sleeved on the surface of the stainless steel column 10, and the rubber sleeve 11 provides the surface of the stainless steel column 10 with anti-collision protection and anti-static protection.

[0030] In more detail, a pin 5 is installed at the bottom end of the tube body 3, a first mounting hole 17 is opened at the bottom end of the shell 1, the pin 5 slides through the first mounting hole 17, and a first protective tube 9 is installed at the bottom end of the shell 1 and at a position outside the first mounting hole 17. The first protective tube 9 is a cylindrical structure.

[0031] Moreover, a second mounting hole 18 is formed in the middle of the first protective tube 9 , and an adjustment groove 8 is formed on the outer side of the second mounting hole 18 .

[0032] Furthermore, the adjustment groove 8 is a circular groove structure, and a second protective tube 7 is slidably installed inside the adjustment groove 8. The second protective tube 7 is a cylindrical structure. Thus, the height position of the second protective tube 7 can be adjusted through the adjustment groove 8 to provide sufficient and good protection for the pin 5.

[0033] Furthermore, a rubber ring 6 is adhered to the bottom end of the second protective tube 7 , a third mounting hole 16 is opened in the middle of the rubber ring 6 , and the pin 5 passes through the second mounting hole 18 , the second protective tube 7 and the third mounting hole 16 .

[0034] Furthermore, a connecting plate 24 is fixed to the top of the side surface of the first protective tube 9 . The connecting plate 24 is a circular plate structure, and a second connecting hole 23 is opened on the surface of the connecting plate 24 .

[0035] Furthermore, a third connecting hole 21 is opened at the bottom end of the outer shell 1, and the third connecting hole 21 is a threaded hole structure. The third connecting hole 21 is located on the outside of the first mounting hole 17, and the third connecting hole 21 is aligned with the second connecting hole 23. The first bolt 22 is inserted into the second connecting hole 23 and the third connecting hole 21, and the first bolt 22 is threadedly connected to the third connecting hole 21. Therefore, the first protective tube 9 is detachably connected to the outer shell 1 through the connecting plate 24 and the first bolt 22.

[0036] Furthermore, a fifth connecting hole 19 is opened on the outer side of the first protective tube 9, and the fifth connecting hole 19 is a threaded hole structure. A second bolt 20 is inserted into the fifth connecting hole 19, and the inner end of the second bolt 20 is pressed against the outer side of the second protective tube 7, so that the second protective tube 7 and the first protective tube 9 can be detachably fastened and connected.

[0037] Furthermore, a fourth connection hole 25 is opened on the side of the housing 1 . The fourth connection hole 25 is a threaded hole structure, and a third bolt 2 passes through the inside of the fourth connection hole 25 .

[0038] Furthermore, the inner end of the third bolt 2 is sleeved with a tightening block 4, and the tightening block 4 is made of rubber. The tightening block 4 is tightened against the outer side of the tube body 3. Therefore, the third bolt 2 and the tightening block 4 are arranged between the outer shell 1 and the MOS tube body 3 for support and reinforcement, which can improve the anti-collision and anti-impact protection performance and improve the safety of the MOS tube.

[0039] Working method: A first protective tube 9 is installed at the bottom end of the housing 1 through a first bolt 22 and a connecting plate 24, and a second protective tube 7 is adjustably installed at the bottom end of the first protective tube 9 through an adjusting groove 8 and a second bolt 20, and a rubber ring 6 is adhered to the bottom end of the second protective tube 7.

[0040] In this way, the pin 5 is installed at the bottom end of the MOS tube body 3, the shell 1 is installed on the outside of the MOS tube body 3, the pin 5 passes downward through the first mounting hole 17 at the bottom end of the shell 1, and passes through the second mounting hole 18 inside the first protective tube 9, the second protective tube 7 and the third mounting hole 16 in the middle of the rubber ring 6.

[0041] In this way, the second protective tube 7 can be slid up and down along the adjustment groove 8 to adjust the height position of the second protective tube 7, and then the first protective tube 9 and the second protective tube 7 provide sufficient and good protection for the pin 5, thereby reducing the generation of static electricity on the surface of the pin 5.

[0042] The MOS tube body 3 is installed inside the housing 1 and the top plate 15, and the stainless steel column 10 is installed by plugging and connecting the connecting column 26 and the first connecting hole 27 with bolts. Therefore, the stainless steel column 10 can be detachably installed and connected, and it is convenient to replace and maintain the stainless steel column 10.

[0043] At the same time, the rubber sleeve 11 is tightly sleeved on the surface of the stainless steel column 10. Therefore, the rubber sleeve 11 improves the anti-collision and anti-static protection of the surface of the stainless steel column 10, which is convenient for improving the safety of the stainless steel column 10 conducting static electricity to the outside.

[0044] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A MOS electrostatic protection device, comprising a housing (1) and a tube body (3), characterized in that: The tube body (3) is installed inside the shell (1); a mounting plate (14) is provided at the top end of the tube body (3); a through hole (13) is provided on the surface of the mounting plate (14); a top plate (15) is installed at the top end of the shell (1); the mounting plate (14) passes through the top plate (15); a first connecting hole (27) is provided at the top end of the top plate (15); a connecting column (26) is inserted into the inside of the first connecting hole (27); a stainless steel column (10) is fixed to the top end of the connecting column (26); the top of the stainless steel column (10) is The end of the tube (3) is connected with a wire (12), the surface of the stainless steel column (10) is sleeved with a rubber sleeve (11), the bottom end of the tube body (3) is installed with a pin (5), the bottom end of the shell (1) is opened with a first mounting hole (17), the pin (5) slides through the first mounting hole (17), the bottom end of the shell (1) is installed with a first protective tube (9) at a position outside the first mounting hole (17), the middle of the first protective tube (9) is opened with a second mounting hole (18), and the outside of the second mounting hole (18) is opened with an adjustment groove (8).

2. A MOS electrostatic protection device according to claim 1, characterized in that: The adjusting groove (8) is a circular ring groove structure, and a second protective tube (7) is slidably mounted inside the adjusting groove (8), and the second protective tube (7) is a cylindrical structure.

3. A MOS electrostatic protection device according to claim 2, characterized in that: A rubber ring (6) is adhered to the bottom end of the second protective tube (7), a third mounting hole (16) is opened in the middle of the rubber ring (6), and the pin (5) passes through the second mounting hole (18), the second protective tube (7) and the third mounting hole (16).

4. The MOS electrostatic protection device according to claim 1, characterized in that: A connecting plate (24) is fixed to the top end of the side surface of the first protective tube (9), and a second connecting hole (23) is opened on the surface of the connecting plate (24).

5. A MOS electrostatic protection device according to claim 4, characterized in that: A third connecting hole (21) is formed at the bottom end of the housing (1), the third connecting hole (21) is located outside the first mounting hole (17), the third connecting hole (21) is aligned with the second connecting hole (23), and a first bolt (22) is inserted into the second connecting hole (23) and the third connecting hole (21).

6. The MOS electrostatic protection device according to claim 2, characterized in that: A fifth connecting hole (19) is formed on the outer side of the first protective tube (9). The fifth connecting hole (19) is a threaded hole structure. A second bolt (20) is inserted into the inner side of the fifth connecting hole (19). The inner end of the second bolt (20) is pressed tightly against the outer side of the second protective tube (7).

7. The MOS electrostatic protection device according to claim 1, characterized in that: A fourth connection hole (25) is opened on the side of the housing (1); the fourth connection hole (25) is a threaded hole structure, and a third bolt (2) passes through the interior of the fourth connection hole (25).

8. The MOS electrostatic protection device according to claim 7, characterized in that: The inner end of the third bolt (2) is sleeved with a tightening block (4), the tightening block (4) is made of rubber material, and the tightening block (4) is tightened against the outer side of the tube body (3).

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