A TVS protection device

Abstract

The utility model relates to diode technical field, and disclose a TVS protection device, including TVS protection device body, both sides of TVS protection device body all are provided with connecting pin, the outside of TVS protection device body is equipped with aluminium alloy frame, and the both sides, front and back end of aluminium alloy frame all are provided with assembly slot, the inside joint of assembly slot has filter plate spare, the utility model discloses through the four surface assembly slot joint independent filter plate spare of aluminium alloy frame, forms the dustproof barrier of surrounding TVS protection device body, sets up I -shaped aluminium alloy support, when screwing, two ends tip pressure filter plate spare and TVS protection device body surface respectively and adhere, guarantee filter plate spare stable outside, I -shaped aluminium alloy support also becomes the heat conduction bridge of connecting TVS protection device body and aluminium alloy frame, and the heat generated by TVS protection device body is directly conducted to the aluminium alloy frame of large area through I -shaped aluminium alloy support, and the equivalent expansion radiating surface area.

Description

Technical Field

[0001] This utility model relates to the field of diode technology, specifically a TVS protection device. Background Technology

[0002] Existing unidirectional dual-channel TVS (Transient Voltage Suppressor) electrostatic protection devices are widely used in communication interfaces, power ports, and various precision electronic devices to quickly discharge electrostatic discharge (ESD) and surge pulses, protecting sensitive downstream circuits. In practical engineering applications, TVS devices are often placed on the interface side of the equipment housing or near the ventilation openings, making them highly susceptible to the intrusion of external foreign objects such as dust and fibers. Dust accumulation not only absorbs moisture from the air, leading to a decrease in the insulation performance between pins, but also causes signal distortion or short circuit faults due to the high impedance leakage path formed by the dust itself or after moisture absorption. Therefore, the industry generally adds a protective structure to the outside of the TVS device to achieve physical isolation of solid contaminants while ensuring a certain heat dissipation capacity.

[0003] Taking the patent document with announcement number CN218385221U as an example, a unidirectional dual-channel TVS electrostatic protection device discloses in its specification that "by setting up a dustproof net and a dustproof cover to block dust, the dust adsorbed by the unidirectional dual-channel TVS electrostatic protection device body is reduced, which facilitates the heat dissipation of the unidirectional dual-channel TVS electrostatic protection device body and improves its service life." However, as the operating time increases, the dust captured by the dustproof net and dust collection net will continue to accumulate and gradually block the mesh, resulting in a significant increase in airflow resistance and a continuous reduction in the effective flow area for heat dissipation. Consequently, the heat generated by the device itself is difficult to be carried away in time, and the heat dissipation efficiency shows an irreversible and continuous downward trend, which will affect the normal use of the TVS protection device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a TVS protection device that solves the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a TVS protection device, including a TVS protection device body, connecting feet on both sides of the TVS protection device body, an aluminum alloy frame fitted on the outer side of the TVS protection device body, and assembly slots on both sides and at the front and rear ends of the aluminum alloy frame, a filter plate being snapped into the inside of the assembly slot, and an internally threaded cylindrical frame fitted in the middle of the assembly slot on both sides and at the front and rear ends of the aluminum alloy frame, and a limiting component that can limit the pressure of the filter plate being pressed.

[0006] Preferably, the filter plate includes an aluminum alloy frame plate snapped into the assembly slot, and a filter screen is embedded in the aluminum alloy frame plate. The top of the internally threaded cylindrical frame is fixed to the inner wall of the top of the aluminum alloy frame, and a screw hole is opened at the bottom of the internally threaded cylindrical frame.

[0007] Preferably, the limiting component includes an I-shaped aluminum alloy support rod, one end of which has an external thread and is threaded to a screw hole, and the end of the I-shaped aluminum alloy support rod has an internal hexagonal groove.

[0008] Preferably, a T-shaped rubber rod is fixed on the inner wall of the corner of the assembly slot, and a positioning hole is opened in the corner structure of the aluminum alloy frame plate and fitted to one end of the T-shaped rubber rod through the positioning hole, and the end of the T-shaped rubber rod away from the aluminum alloy frame is set as a hemispherical structure.

[0009] Preferably, both sides of the aluminum alloy frame are provided with clearance grooves, and the clearance grooves are movably connected to the connecting feet. The inner wall of the clearance groove is fixed with a buffer rubber strip, and a clearance gap is provided between the surface of the buffer rubber strip and the surface of the connecting foot.

[0010] Preferably, the aluminum alloy frame has a plurality of heat sinks arranged on the top inner wall, and the bottom of the heat sinks is in contact with the top surface of the TVS protection device body, and a ventilation channel with both sides open is formed between two adjacent heat sinks.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model uses four-sided assembly slots on an aluminum alloy frame to attach independent filter plates, forming a dust barrier surrounding the TVS protection device body. When dust accumulates on the filter plates, there is no need to disassemble the overall frame. Simply use an Allen wrench to loosen the I-shaped aluminum alloy support rod through the Allen slot, and the filter plate can be directly pulled out from the T-shaped rubber rod for quick cleaning or replacement. After cleaning, reinsert the filter plate and tighten the support rod to restore stability. This modular design completely solves the problem in the prior art where dust accumulation on the dustproof mesh is difficult to clean thoroughly, leading to permanent blockage of the airflow channel. This allows the TVS protection device body to maintain an ideal working state of low wind resistance and high filtration efficiency for a long time, avoiding irreversible decline in heat dissipation efficiency.

[0013] 2. The I-shaped aluminum alloy support rod of this utility model has one end connected to the internally threaded cylindrical frame via an external thread. When tightened, the end simultaneously presses against the surface of the filter plate and the TVS protection device body. This structure gives the I-shaped aluminum alloy support rod two functions: mechanically, it acts as a pressing component to firmly lock the filter plate and prevent it from loosening due to vibration; thermally, the I-shaped aluminum alloy support rod becomes a heat-conducting bridge connecting the TVS protection device body and the aluminum alloy frame. The heat generated by the TVS protection device body is directly conducted to the large-area aluminum alloy frame through the I-shaped aluminum alloy support rod, effectively increasing the heat dissipation surface area of ​​the TVS protection device body. This "one-piece, two-purpose" design can significantly improve heat conduction efficiency without adding extra parts, alleviating the contradiction between tight protection and efficient heat dissipation.

[0014] 3. This invention utilizes multiple heat sinks arranged on the inner wall of the top of the aluminum alloy frame to directly contact the top surface of the TVS protection device body. Solid-to-solid conduction rapidly removes heat, creating fully open ventilation channels between adjacent heat sinks. These channels fully utilize the weak natural convection around the device, guiding cool air in from one side, heating it up, and then out from the other side, forming an orderly micro-airflow circulation. This avoids the localized heat accumulation that easily occurs with traditional closed or semi-closed protective covers. The heat sinks both increase the heat exchange area and organize the airflow direction, achieving effective cooling of the device under protective enclosure without external power, ensuring long-term operational reliability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a left-side view of the structure of this utility model;

[0018] Figure 4 This is a left-side view of the TVS protection device body in the structure of this utility model;

[0019] Figure 5 This is an enlarged schematic diagram of the aluminum alloy frame plate in the structure of this utility model;

[0020] Figure 6 This is a cross-sectional schematic diagram of the limiting component in the structure of this utility model;

[0021] Figure 7 This is a cross-sectional view of the T-shaped rubber rod in the structure of this utility model.

[0022] In the diagram: 1. TVS protection device body; 2. Connecting foot; 3. Aluminum alloy frame; 4. Assembly slot; 5. Filter plate; 6. Limiting component; 61. I-shaped aluminum alloy support rod; 62. Internal hexagonal slot; 7. T-shaped rubber rod; 8. Heat sink; 9. Buffer rubber strip; 10. Internal threaded sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 A TVS protection device includes a TVS protection device body 1, connecting feet 2 on both sides of the TVS protection device body 1, an aluminum alloy frame 3 fitted on the outer side of the TVS protection device body 1, and clearance grooves on both sides of the aluminum alloy frame 3, which are movably connected to the connecting feet 2. A buffer rubber strip 9 is fixed on the inner wall of the clearance groove, and a clearance gap is provided between the surface of the buffer rubber strip 9 and the surface of the connecting feet 2 to avoid hard contact.

[0025] Furthermore, the aluminum alloy frame 3 has assembly slots 4 on both sides and at the front and rear ends. Filter plates 5 are snapped into the inside of the assembly slots 4. The filter plates 5 include aluminum alloy frame plates snapped into the inside of the assembly slots 4, and filter screens are embedded in the aluminum alloy frame plates. This provides a clearance channel for filtration and dust prevention while ensuring structural strength, thus meeting the usage requirements. The top of the internal threaded cylindrical frame 10 is fixed to the inner wall of the top of the aluminum alloy frame 3, and the bottom of the internal threaded cylindrical frame 10 has screw holes to provide structural support conditions for subsequent assembly.

[0026] The aluminum alloy frame 3 has internally threaded cylindrical brackets 10 fixed on both sides and at the front and rear ends, which are fitted into the middle of the assembly slot 4. The bottom of the internally threaded cylindrical bracket 10 is connected to a limiting component 6 that can limit the pressure of the filter plate 5. The limiting component 6 includes an I-shaped aluminum alloy support rod 61. One end of the I-shaped aluminum alloy support rod 61 has an external thread and is threaded to a screw hole. The end of the I-shaped aluminum alloy support rod 61 has an internal hexagonal groove 62. The internal hexagonal groove 62 serves as a clearance space to fit with an existing wrench, thereby providing the operator with convenient force application conditions.

[0027] The above technical solutions will be explained one by one through specific implementation steps below;

[0028] S1. The aluminum alloy frame 3 is placed on the outside of the TVS protection device body 1. At the same time, four filter plates 5 will also surround the outside of the TVS protection device body 1. In subsequent use, the TVS protection device body 1 can filter and block dust in the environment without delaying its self-cooling heat dissipation, ensuring the stable and continuous use of the TVS protection device body 1.

[0029] S2. After the aluminum alloy frame 3 and the four filter plates 5 are initially assembled, in order to ensure the stability of the four filter plates 5 during use and to increase the heat dissipation of the TVS protection device body 1, the I-shaped aluminum alloy support rods 61 set in the middle of the four filter plates 5 are screwed on, so that the I-shaped aluminum alloy support rods 61, supported by their corresponding internal threaded cylindrical frame 10, press and limit the filter plates 5, and ensure the connection strength between the filter plates 5 and the aluminum alloy frame 3 and the TVS protection device body 1.

[0030] Meanwhile, the other end of the rotated I-shaped aluminum alloy support rod 61 is attached to the surface of the TVS protection device body 1. After the TVS protection device body 1 generates heat during operation, the four I-shaped aluminum alloy support rods 61 can transfer the heat inside the TVS protection device body 1 to the aluminum alloy frame 3 by heat conduction, which effectively expands the heat dissipation area of ​​the TVS protection device body 1 and improves the heat dissipation efficiency of the TVS protection device body 1.

[0031] S3. When it is necessary to repair the aluminum alloy frame 3 or the TVS protection device body 1, simply twist and reset the four I-shaped aluminum alloy support rods 61, and the assembly formed by the aluminum alloy frame 3, filter plate 5 and other structures can be directly detached from the outside of the TVS protection device body 1.

[0032] Please see Figure 7 T-shaped rubber rods 7 are fixed on the inner walls of the corners of the assembly slot 4. The corner structure of the aluminum alloy frame plate has positioning holes and is fitted with one end of the T-shaped rubber rod 7 through the positioning holes. The end of the T-shaped rubber rod 7 away from the aluminum alloy frame 3 is set as a hemispherical structure.

[0033] During use, considering the initial anti-detachment requirement of the filter plate 5 during the assembly process in the assembly slot 4, a T-shaped rubber rod 7 is set as an auxiliary positioning condition. During the process of the filter plate 5 being installed in the assembly slot 4, the T-shaped rubber rod 7 will be synchronously installed with the corresponding positioning hole. After the filter plate 5 is installed in place, the positioning hole will also move from the end of the T-shaped rubber rod 7 away from the aluminum alloy frame 3 to the end of the T-shaped rubber rod 7 close to the aluminum alloy frame 3. Due to the structural constraints of the T-shaped rubber rod 7, the filter plate 5 also needs to be detached from the assembly slot 4 by applying a certain external traction force, thereby ensuring the stability of the filter plate 5 in the initial assembly stage and optimizing the use effect.

[0034] Please see Figure 4 The aluminum alloy frame 3 has several heat sinks 8 arranged on the inner wall of the top, and the bottom of the heat sink 8 is in contact with the top surface of the TVS protection device body 1. A ventilation channel with open sides is formed between two adjacent heat sinks 8.

[0035] When in use, considering that the aluminum alloy frame 3 and multiple filter plates 5 surround the TVS protection device body 1, which causes slow airflow in the outer area, multiple heat sinks 8 are set to further dissipate heat from the TVS protection device body 1. This improves heat dissipation efficiency, and the air exchange and flow channel formed between two adjacent heat sinks 8, which is open on both sides, can also facilitate the convection of hot and cold air, thus avoiding the accumulation of heat.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A TVS protection device, comprising a TVS protection device body (1) and connecting pins (2) provided on both sides of the TVS protection device body (1), characterized in that: The TVS protection device body (1) is fitted with an aluminum alloy frame (3) on the outside, and the aluminum alloy frame (3) has assembly slots (4) on both sides and at the front and rear ends. The assembly slots (4) are fitted with filter plates (5). The aluminum alloy frame (3) has internal threaded sleeves (10) fitted with the middle of the assembly slots (4) on both sides and at the front and rear ends. The bottom of the internal threaded sleeves (10) is connected with a limiting component (6) that can press and limit the filter plates (5).

2. The TVS protection device according to claim 1, characterized in that: The filter plate (5) includes an aluminum alloy frame plate that is snapped into the assembly groove (4), and a filter screen is embedded in the aluminum alloy frame plate. The top of the internal threaded cylinder (10) is fixed to the inner wall of the top of the aluminum alloy frame (3), and a screw hole is opened at the bottom of the internal threaded cylinder (10).

3. A TVS protection device according to claim 2, characterized in that: The limiting component (6) includes an I-shaped aluminum alloy support rod (61). One end of the I-shaped aluminum alloy support rod (61) has an external thread and is connected to the screw hole through the external thread. The end of the I-shaped aluminum alloy support rod (61) has an internal hexagonal groove (62).

4. A TVS protection device according to claim 2, characterized in that: A T-shaped rubber rod (7) is fixed on the inner wall of the corner of the assembly groove (4). The corner structure of the aluminum alloy frame plate is provided with a positioning hole and is fitted with one end of the T-shaped rubber rod (7) through the positioning hole. The end of the T-shaped rubber rod (7) away from the aluminum alloy frame (3) is set as a hemispherical structure.

5. A TVS protection device according to claim 1, characterized in that: The aluminum alloy frame (3) has clearance grooves on both sides, and the clearance grooves are movably connected to the connecting foot (2). The inner wall of the clearance groove is fixed with a buffer rubber strip (9), and a clearance gap is provided between the surface of the buffer rubber strip (9) and the surface of the connecting foot (2).

6. A TVS protection device according to claim 1, characterized in that: The aluminum alloy frame (3) has several heat sinks (8) arranged on the inner wall of the top, and the bottom of the heat sinks (8) is in contact with the top surface of the TVS protection device body (1). A ventilation channel with open sides is formed between two adjacent heat sinks (8).

Images