Multifunctional protective TVS (Transient Voltage Suppressor)

Abstract

The utility model discloses a multifunctional protective TVS, which comprises a mounting plate and a TVS main body, the TVS main body is arranged in the middle of the top end of the mounting plate, a protective shell is arranged on the mounting plate through a mounting assembly, the protective shell is matched with the TVS main body, a positioning mechanism matched with the mounting plate is arranged on the mounting assembly, a pressing mechanism matched with the TVS main body is arranged in the protective shell, and the TVS main body is arranged on the TVS main body. An auxiliary heat dissipation assembly is arranged on the protective shell. According to the utility model, the protective shell can be quickly assembled and fixed when being installed, the protection effect on the TVS main body is ensured, the situation that the TVS main body is damaged due to external impact and the like can be avoided, and meanwhile, the protective shell can be quickly disassembled without the help of tools when the protective shell needs to be disassembled, so that the disassembly is relatively simple and convenient; and the maintenance efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of TVS, in particular to a multifunctional protective TVS. Background Art

[0002] TVS is a high-efficiency protection device in the form of a diode. When the two poles of the TVS diode are subjected to a reverse transient high-energy impact, it can change the high impedance between the two poles into a low impedance at a speed of 10 to the negative 12th power of seconds, absorb up to several kilowatts of surge power, and clamp the voltage between the two poles at a predetermined value, effectively protecting the precision components in the electronic circuit from damage by various surge pulses. Due to its advantages of fast response speed, large transient power, low leakage current, small breakdown voltage deviation, easy control of clamping voltage, no damage limit, and small size, it has been widely used in various fields such as computer systems, communication equipment, AC / DC power supplies, automobiles, electronic ballasts, and household appliances. In order to ensure safety during use, a protective device can be installed on its outside to avoid damage due to impact.

[0003] After searching, a Chinese patent publication number CN216213367U discloses a multifunctional protective TVS. It includes a TVS body, an outer protective shell is provided on the TVS body, a side positioning piece is provided inside the outer protective shell, and a buffer protection component is provided on the outer protective shell that can make a linear reciprocating motion close to or away from one end of the TVS body. The outer protective shell in the utility model plays a role in protecting the TVS body, preventing the TVS body from sliding left and right during use, and has good stability. The buffer protection component can play a buffering and protective role when the outer protective shell is squeezed and impacted by external force, forming multi-directional and multi-protection, which increases the service life of the TVS body and is highly practical.

[0004] However, this device has certain defects in actual use. Although it can provide good protection for the TVS during use, the TVS is wrapped in a protective shell. In order to ensure stability and protection effect, it needs to be installed and fixed. When the TVS is inspected or replaced, it is inconvenient to disassemble the shell, which affects the efficiency of inspection or replacement. Utility Model Content

[0005] The purpose of the utility model is to provide a multifunctional protective TVS to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multifunctional protective TVS, comprising a mounting plate and a TVS body, wherein the TVS body is arranged in the middle of the top of the mounting plate, a protective shell is arranged on the mounting plate through a mounting assembly, the protective shell matches the TVS body, a positioning mechanism matching the mounting plate is arranged on the mounting assembly, a clamping mechanism matching the TVS body is arranged in the protective shell, and an auxiliary heat dissipation assembly is arranged on the protective shell.

[0007] Preferably, in order to facilitate the assembly of the protective shell and thus provide protection for the TVS, the installation assembly includes fixed blocks equidistantly arranged on the side surfaces of the mounting plate, a plug rod is fixed under the fixed block, and a plug hole matching the plug rod is opened on the mounting plate.

[0008] Preferably, in order to be able to position and fix after installation to ensure the protective effect and facilitate disassembly operations during maintenance and disassembly, the positioning mechanism includes a sliding cavity opened at the bottom end of the inner part of the insertion rod, and movable plates are symmetrically arranged in the sliding cavity through springs. Limit blocks are provided at the ends of the two movable plates that are away from each other, and the limit blocks slide out of the sliding cavity and extend to the outside to match the installation plate.

[0009] Preferably, in order to improve the effect of ventilation and heat dissipation, the auxiliary heat dissipation component includes through holes equidistantly opened at both ends of the protective shell, and a heat conductive block matching the TVS body is embedded in the middle of the top of the protective shell.

[0010] Preferably, in order to facilitate auxiliary pressing of the TVS body and ensure stable installation, the pressing mechanism includes positioning holes equidistantly arranged at the top of the TVS body, a pressing plate is provided in the positioning hole, and the pressing plate is connected to the protective shell through a reset assembly.

[0011] Preferably, in order to avoid hard contact, a rubber pad is fixedly provided at the bottom end of the pressing plate.

[0012] Preferably, in order to ensure the clamping effect and assist in lifting during disassembly to facilitate the disassembly operation of the protective shell, the reset assembly includes a guide telescopic rod arranged between the protective shell and the pressure plate, and the outer sleeve of the guide telescopic rod is provided with a spring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) Through the installation components and positioning mechanism, the protective housing can be quickly assembled and fixed when installed, ensuring the protection effect of the TVS body and avoiding damage caused by external impact. At the same time, when disassembly is required, the protective housing can be quickly disassembled without the help of tools, which is relatively simple and convenient, greatly improving the efficiency of maintenance;

[0015] (2) The auxiliary heat dissipation assembly can assist in ventilation and heat dissipation during use, ensuring that it works at a relatively safe temperature to ensure safety. The clamping mechanism can assist in clamping and fixing the TVS body when assembling the protective shell to ensure firmness and avoid sliding. At the same time, when disassembling the protective shell, it can assist in lifting it up to facilitate the disassembly operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a multifunctional protective TVS proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a mounting plate and a TVS body in a multifunctional protective TVS proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a protective housing in a multifunctional protective TVS proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of a protective housing in a multifunctional protective TVS proposed by the utility model;

[0020] Figure 5 The present invention is a partial structural schematic diagram of a positioning mechanism in a multifunctional protective TVS.

[0021] In the figure: 1. Mounting plate; 2. Protective shell; 3. Heat conducting block; 4. Through hole; 5. Fixing block; 6. Plug hole; 7. TVS body; 8. Positioning hole; 9. Insertion rod; 10. Limit block; 11. Guide telescopic rod; 12. Spring 1; 13. Pressure plate; 14. Rubber pad; 15. Moving plate; 16. Spring 2; 17. Sliding cavity. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5The utility model provides an embodiment: a multifunctional protective TVS, including a mounting plate 1 for assembling a TVS body 7, which can be a circuit board. The TVS body 7 is arranged as close to the input end of the interference source as possible to ensure the electromagnetic compatibility of the circuit and improve the performance of the TVS. The TVS body 7 is mainly composed of a semiconductor chip and a packaging structure to form a transient voltage suppressor, which is a semiconductor device for overvoltage protection and ESD protection. It is a relatively mature technology and will not be described in detail here.

[0024] See also Figure 1-Figure 5 In order to provide protection for the TVS body 7 during use, and to prevent damage caused by external impact, the mounting plate 1 is provided with a protective shell 2 through a mounting assembly, which can provide protection for the TVS body 7. In order to facilitate installation and disassembly, and to facilitate maintenance or replacement of the TVS body 7, the mounting plate 1 is provided with a plug hole 6 for the mounting assembly, and the side surface of the protective shell 2 is equidistantly welded with a fixing block 5, and a plug rod 9 is welded under the fixing block 5 to be plugged into the plug hole 6. The number of the plug rods 9 can be four or six groups to ensure that the plug The connection is firm, and a sliding cavity 17 of a positioning mechanism is opened inside the bottom end of the insertion rod 9, and two sets of movable plates 15 are symmetrically slidably arranged in the sliding cavity 17 through springs 16, which slide in the sliding cavity 17, and the ends of the two movable plates 15 that are away from each other are welded with limiting blocks 10, and the limiting blocks 10 slide out of the sliding cavity 17 and extend to the outside, and are adapted to the bottom of the mounting plate 1, so that the limiting blocks 10 can be extended to engage with the mounting plate 1 for convenient insertion, so as to position and fix the insertion rod 9, thereby ensuring the stability of the protective shell 2 during installation and ensuring the protective effect.

[0025] See also Figure 1-Figure 5 In order to ensure the stability of the TVS body 7 during installation and use, and to ensure the heat dissipation effect during use, a guide telescopic rod 11 of the reset component in the clamping mechanism is equidistantly arranged at the top of the inner part of the protective shell 2, and a spring 12 is sleeved on the outside of the guide telescopic rod 11, and a pressure plate 13 is welded at the bottom end (i.e., the telescopic end) of the guide telescopic rod 11, and a rubber pad 14 for avoiding hard contact is bonded under the pressure plate 13, and positioning holes 8 are equidistantly provided at the top of the TVS body 7 (opened on the outer surface of the TVS body 7, which does not affect its normal use), which are convenient for positioning with the pressure plate 13 to ensure stable installation, and through holes 4 of the heat dissipation component are equidistantly provided on both sides of the protective shell 2, and a heat conductive block 3 is embedded at the top thereof, and its end face in contact with the TVS body 7 can be coated with thermal grease, and a heat dissipation device (which can be a heat dissipation fan or water cooling, etc., the principle is the same as the heat dissipation device of the CPU, which is a relatively mature technology and will not be repeated here) can be provided on the outside of the protective shell 2.

[0026] Working principle: When the utility model is in use, when the protective shell 2 is installed to protect the TVS main body 7, the insertion rod 9 under the fixed block 5 is aligned with the plug-in hole 6, the limit block 10 is pressed, and the movable plate 15 slides in the sliding cavity 17, and the two movable plates 15 are close to each other, and the spring 2 16 is forced to shrink and store potential energy. At this time, the limit block 10 enters the sliding cavity 17, and the insertion rod 9 can be inserted into the plug-in hole 6. After the plug-in is completed, the movable plate 15 is slid and reset under the action of the potential energy of the spring 2 16, and then the limit block 10 is moved and reset, and the bottom of the installation plate 1 can be engaged and limited, so that the protective shell 2 can be installed and fixed. During the plug-in process, the rubber pad 14 under the pressure plate 13 enters the positioning hole 8. As the plug-in continues, the pressure plate 13 is generated to The thrust on the TVS body 7 leads to the telescopic rod 11 and the spring 12 being contracted to store potential energy, and the potential energy generates a downward thrust on the pressure plate 13. After being plugged in and fixed, the TVS body 7 can be pressed to ensure the firm installation, and then it can be protected by the protective shell 2 during use to ensure the safety of the TVS body 7 during use and avoid damage caused by impact, and the heat dissipation device on the heat conductive block 3 through the through hole 4 can ensure the heat dissipation effect during use, and when it needs to be repaired or replaced, the protective shell 2 needs to be disassembled, by pressing the limit block 10, it is pushed into the sliding cavity 17, the engagement limit is lost, and then the protective shell 2 is pulled to remove it, which is convenient for disassembly, and then the repair or replacement operation of the TVS body 7 is convenient.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A multifunctional protective TVS, comprising a mounting plate (1) and a TVS body (7), characterized in that: The TVS body (7) is provided at the middle of the top of the mounting plate (1); a protective shell (2) is provided on the mounting plate (1) via a mounting assembly; the protective shell (2) matches the TVS body (7); a positioning mechanism matching the mounting plate (1) is provided on the mounting assembly; a clamping mechanism matching the TVS body (7) is provided in the protective shell (2); and an auxiliary heat dissipation assembly is provided on the protective shell (2).

2. A multifunctional protective TVS according to claim 1, characterized in that: The mounting assembly comprises fixed blocks (5) equidistantly arranged on the peripheral side of the mounting plate (1), an insertion rod (9) is fixedly arranged under the fixed block (5), and a plug hole (6) matching the insertion rod (9) is opened on the mounting plate (1).

3. A multifunctional protective TVS according to claim 2, characterized in that: The positioning mechanism comprises a sliding cavity (17) opened at the bottom end of the insertion rod (9), and movable plates (15) are symmetrically arranged in the sliding cavity (17) through spring 2 (16). The ends of the two movable plates (15) that are away from each other are each provided with a limit block (10), and the limit block (10) slides out of the sliding cavity (17) and extends to the outside to match the mounting plate (1).

4. A multifunctional protective TVS according to claim 3, characterized in that: The auxiliary heat dissipation component comprises through holes (4) equidistantly arranged at both ends of the protective shell (2), and a heat conduction block (3) matching the TVS body (7) is embedded in the middle of the top end of the protective shell (2).

5. A multifunctional protective TVS according to claim 4, characterized in that: The clamping mechanism comprises positioning holes (8) equidistantly arranged at the top of the TVS body (7), a pressing plate (13) is arranged in the positioning hole (8), and the pressing plate (13) is connected to the protective housing (2) via a reset assembly.

6. A multifunctional protective TVS according to claim 5, characterized in that: A rubber pad (14) is fixedly provided at the bottom end of the pressing plate (13).

7. A multifunctional protective TVS according to claim 6, characterized in that: The reset assembly comprises a guide telescopic rod (11) arranged between the protective shell (2) and the pressure plate (13), and a spring (12) is sleeved on the outside of the guide telescopic rod (11).

Images