Anti-vibration compact frequency converter

Abstract

The utility model provides an anti-vibration compact frequency converter applied to the frequency converter field, comprising a housing and circuit boards arranged in the housing, two groups of circuit boards are symmetrically arranged, the housing is also internally provided with slide bars, four groups of slide bars are uniformly arranged at equal angles, and the upper and lower ends of the slide bars are fixedly provided with assembly discs. An assembly round seat matched with the assembly disc is fixed in the shell, and an axial buffer ring group is arranged between the assembly disc and the assembly round seat; sliding sleeves matched with the sliding rods are arranged at the four corners of the circuit board, and anti-vibration springs are further fixed between the sliding sleeves and the sliding rods. Through the synergistic effect of the sliding rods, the anti-vibration springs, the axial buffering ring sets and other structures, a multi-layer anti-vibration system is formed, the anti-vibration springs and the axial buffering ring sets can effectively absorb and buffer vibration energy in all directions, the influence of vibration on the circuit board is reduced, the element damage risk is reduced, and the service life of the circuit board is prolonged. And the reliability and the stability of the frequency converter in a vibration environment are obviously improved.

Description

Technical Field

[0001] This application relates to the field of frequency converters, and in particular to a vibration-resistant compact frequency converter. Background Technology

[0002] In modern industrial production and transportation, frequency converters are increasingly widely used due to their precise ability to regulate motor speed and torque. However, in actual working environments, many scenarios experience significant vibration interference, such as construction machinery operation sites and mining equipment operating environments. Traditional frequency converters lack effective vibration resistance measures in their structural design. Under continuous vibration, critical components such as internal circuit boards are prone to loose connections and component damage, leading to frequent equipment failures. This not only affects production efficiency but also increases maintenance costs and equipment replacement frequency.

[0003] Meanwhile, with the increasing integration of equipment, higher demands are being placed on the space occupied by frequency converters. Traditional frequency converters have a loose internal layout and their components are not compactly arranged, resulting in a large overall size that makes them difficult to install in space-constrained environments, limiting their application in many fields. Therefore, developing a frequency converter that can effectively resist vibration while possessing a compact structure has become an urgent problem for the industry. Utility Model Content

[0004] The purpose of this application is to effectively improve the stability of the frequency converter in a vibration environment through innovative structural design, while optimizing the internal layout and reducing the overall volume to meet the dual requirements of frequency converter performance and space under different working conditions. Compared with the prior art, it provides a vibration-resistant compact frequency converter, including a housing and a circuit board set in the housing. Two sets of the circuit boards are symmetrically arranged. The housing is also provided with a slide rod. Four sets of the slide rods are evenly distributed at equal angles. The upper and lower ends of the slide rods are fixed with assembly plates. The housing is fixed with an assembly round seat that matches the assembly plate. An axial buffer ring group is provided between the assembly plate and the assembly round seat.

[0005] The circuit board is provided with sliding sleeves at its four corners that match the sliding rods, and anti-vibration springs are also fixed between the sliding sleeves and the sliding rods.

[0006] Furthermore, the anti-vibration spring has a conical spring structure and has an elastic force that drives the two sets of circuit boards to move closer together.

[0007] Furthermore, a mating frustum is fixed on the assembly base, and a fastening cover that mates with the mating frustum is provided on the side of the assembly plate. A damping ring is also fixed on the circumferential side of the mating frustum.

[0008] The assembly plate is also provided with a number of ball bearings on the side opposite to the mating truncated cone, and the ball bearings are evenly distributed at equal angles.

[0009] Furthermore, the axial buffer ring assembly includes a fixed ring, which is fixed inside the assembly round seat, and a plurality of elastic rings are fixed on the fixed ring, the plurality of elastic rings being evenly distributed at equal angles;

[0010] The elastic ring has a spring force that drives the axis of the assembly disc to approach the axis of the assembly base, and the thickness of the elastic ring gradually decreases away from the fixed ring.

[0011] Furthermore, the housing includes an upper housing and a lower housing, with two sets of mounting round seats respectively fixed inside the upper housing and the lower housing. A heat dissipation mechanism is also clamped on the side of the upper housing opposite to the lower housing. The heat dissipation mechanism includes two sets of symmetrically arranged port rings, with an elastic flat air duct fixed between the two sets of port rings. Two sets of N-shaped aluminum sheets are symmetrically arranged inside the elastic flat air duct, and two sets of thermally conductive silicone pads are symmetrically arranged outside the elastic flat air duct. The thermally conductive silicone pads are fixed to the circuit board with thermally conductive adhesive, and adjacent thermally conductive silicone pads are fixed to the N-shaped aluminum sheets by a number of equidistantly arranged elastic silicone pillars. The elastic flat air duct has through holes that match the elastic silicone pillars.

[0012] The two ends of the N-shaped aluminum sheet extend through the elastic flat air duct and are attached to one side of the outer wall of the housing. Heat dissipation fins are fixed on the side of the N-shaped aluminum sheet away from the housing.

[0013] Furthermore, the elastic flat air duct is sandwiched between the two sets of circuit boards, and the elastic flat air duct has an elastic force that drives the two sets of circuit boards away from each other. The elastic flat air duct is also provided with a heat dissipation channel.

[0014] The upper housing and the lower housing are each fixed with a connecting skirt on the opposite side. The connecting skirt is provided with a sealing notch for fastening the sealing port ring. The upper housing and the lower housing are respectively fixed with a wiring terminal and a bolt hole on the side away from each other.

[0015] Compared to existing technologies, the advantages of this application are:

[0016] This application forms a multi-layered anti-vibration system through the synergistic effect of structures such as slide bars, anti-vibration springs, and axial buffer rings. The anti-vibration springs and axial buffer rings can effectively absorb and buffer vibration energy in all directions, reduce the impact of vibration on the circuit board, reduce the risk of component damage, and significantly improve the reliability and stability of the frequency converter in a vibration environment.

[0017] The symmetrically arranged circuit boards and cleverly laid-out internal components make full use of the internal space of the housing, effectively reducing the overall size of the frequency converter. Meanwhile, the integrated design of the heat dissipation mechanism and housing avoids additional space occupation, meeting the installation requirements of space-constrained environments. The combination of thermally conductive silicone pads, N-shaped aluminum fins, and heat dissipation fins in the heat dissipation mechanism achieves efficient heat conduction and dissipation. The flexible flat air duct and its internal heat dissipation channels promote air convection, further enhancing heat dissipation capacity and ensuring that the circuit board maintains a suitable temperature during operation, extending the lifespan of the frequency converter. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front structure of this application;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this application;

[0020] Figure 3 This is a schematic diagram of the slide bar and its components proposed in this application;

[0021] Figure 4 This is an exploded structural diagram of the slide bar and its components proposed in this application;

[0022] Figure 5 This is a schematic diagram of the heat dissipation mechanism proposed in this application;

[0023] Figure 6 This is a cross-sectional structural diagram of this application;

[0024] Figure 7 for Figure 6 Enlarged structural diagram of section A in the middle;

[0025] Figure 8 for Figure 6 Enlarged structural diagram of section B in the middle;

[0026] Figure 9 This is a schematic diagram of the axial buffer ring assembly proposed in this application.

[0027] Explanation of the labels in the diagram:

[0028] 1. Housing; 11. Upper housing; 111. Terminal; 12. Lower housing; 121. Bolt hole; 13. Connecting skirt; 131. Sealing notch; 2. Heat dissipation mechanism; 201. Heat dissipation channel; 21. Port ring; 22. Elastic flat air duct; 221. Through hole; 23. Thermally conductive silicone pad; 24. N-type aluminum sheet; 25. Heat dissipation fins; 26. Elastic silicone column; 3. Circuit board; 31. Sliding sleeve; 4. Sliding rod; 5. Anti-vibration spring; 6. Assembly plate; 61. Fastening cover; 62. Ball bearing; 7. Axial buffer ring assembly; 71. Fixing ring; 72. Elastic ring; 8. Assembly round seat; 81. Mating frustum; 82. Damping ring. Detailed Implementation

[0029] The embodiments will be described clearly and completely with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0030] Example:

[0031] This utility model provides a vibration-resistant compact frequency converter. Please refer to [link / reference]. Figures 1-9 It includes a housing 1 and a circuit board 3 disposed inside the housing 1.

[0032] Two sets of circuit boards 3 are symmetrically arranged inside the housing 1. The two sets of circuit boards 3 are the main control circuit board and the drive circuit board. At the same time, four sets of slide rods 4 are provided inside the housing 1. The slide rods 4 are evenly distributed at equal angles, and assembly plates 6 are fixed at both the upper and lower ends of each slide rod.

[0033] An assembly round seat 8 that matches the assembly plate 6 is fixed inside the housing 1. An axial buffer ring group 7 is provided between the assembly plate 6 and the assembly round seat 8. Sliding sleeves 31 that match the sliding rods 4 are provided at the four corners of the circuit board 3. Anti-vibration springs 5 ​​are fixed between the sliding sleeves 31 and the sliding rods 4.

[0034] The anti-vibration spring 5 adopts a conical spring structure, which has an elastic force that drives the two sets of circuit boards 3 to move closer together. When vibration occurs, it can absorb vibration energy through the elastic deformation of the spring and reduce the swaying of the circuit board 3 in the vertical direction.

[0035] A mating frustum 81 is fixed on the assembly base 8, and a damping ring 82 is also fixed on the circumferential side of the mating frustum 81. The side of the assembly plate 6 is provided with a snap-fit ​​cover 61 that cooperates with the mating frustum 81. The two cooperate with each other to ensure the stability of the slide rod 4 installation. On the side of the assembly plate 6 opposite to the mating frustum 81, there are a number of balls 62 evenly distributed at equal angles. The arrangement of the balls 62 can reduce the friction between the assembly plate 6 and the mating frustum 81. Combined with the damping effect of the damping ring 82, the slide rod 4 can move flexibly within a certain range and better adapt to the horizontal vibration environment.

[0036] The axial buffer ring assembly 7 includes a fixed ring 71, which is fixed inside the assembly round seat 8. Several elastic rings 72 are fixed on the fixed ring 71 and are evenly distributed at equal angles. The elastic rings 72 have a spring force that drives the axis of the assembly disk 6 to approach the axis of the assembly round seat 8, and the thickness of the elastic rings 72 gradually decreases away from the fixed ring 71. This structural design enables the axial buffer ring assembly 7 to effectively buffer vibration through the deformation of the elastic rings 72 when subjected to axial vibration, thus ensuring the connection stability between the slide rod 4 and the housing 1.

[0037] The housing 1 consists of an upper housing 11 and a lower housing 12. Two sets of mounting round seats 8 are fixed inside the upper housing 11 and the lower housing 12 respectively. A heat dissipation mechanism 2 is clamped on the opposite side of the upper housing 11 and the lower housing 12. The heat dissipation mechanism 2 includes two sets of symmetrically arranged port rings 21. An elastic flat air duct 22 is fixed between the two sets of port rings 21. Two sets of N-shaped aluminum sheets 24 are symmetrically arranged inside the elastic flat air duct 22, and two sets of thermally conductive silicone pads 23 are symmetrically arranged on the outside. The thermally conductive silicone pads 23 are fixed to the circuit board 3 with thermally conductive adhesive to achieve good heat conduction.

[0038] Adjacent thermally conductive silicone pads 23 and N-shaped aluminum sheets 24 are fixed together by several equidistantly arranged elastic silicone pillars 26. The elastic flat air duct 22 is provided with through holes 221 that match the elastic silicone pillars 26. The two ends of the N-shaped aluminum sheet 24 extend through the elastic flat air duct 22 and are attached to one side of the outer wall of the housing 1. The side away from the housing 1 is fixed with heat dissipation fins 25. The heat generated by the circuit board 3 is quickly dissipated to the outside through the N-shaped aluminum sheet 24 and the heat dissipation fins 25.

[0039] The flexible flat air duct 22 is clamped between the two sets of circuit boards 3, possessing an elastic force that drives the two sets of circuit boards 3 away from each other. It has an internal heat dissipation channel 201 to promote airflow and enhance heat dissipation. Connecting skirts 13 are fixed to opposite sides of the upper housing 11 and lower housing 12. The connecting skirts 13 have sealing notches 131 for engaging the sealing port ring 21, ensuring a tight seal between the heat dissipation mechanism 2 and the housing 1. Wiring terminals 111 and bolt holes 121 are fixed to the opposite sides of the upper housing 11 and lower housing 12, facilitating connection and installation of the inverter with external equipment.

[0040] When the frequency converter is subjected to vibration during operation, the anti-vibration spring 5 will elastically deform according to the direction and intensity of the vibration, absorbing the vibration energy and reducing the shaking of the circuit board 3. At the same time, the elastic ring 72 of the axial buffer ring group 7 will also deform to buffer the axial vibration of the slide rod 4 and ensure a stable connection between the slide rod 4 and the housing 1. The heat generated by the circuit board 3 is conducted to the N-shaped aluminum sheet 24 through the thermally conductive silicone pad 23, and then transferred from the N-shaped aluminum sheet 24 to the heat dissipation fins 25, and dissipated to the outside through air convection. The heat dissipation channel 201 in the elastic flat air duct 22 promotes air circulation, further enhancing the heat dissipation effect and ensuring that the frequency converter can operate stably and efficiently in a vibration environment.

[0041] This application forms a multi-layered anti-vibration system through the synergistic effect of structures such as slide bar 4, anti-vibration spring 5, and axial buffer ring group 7. The anti-vibration spring 5 and axial buffer ring group 7 can effectively absorb and buffer vibration energy in all directions, reduce the impact of vibration on circuit board 3, reduce the risk of component damage, and significantly improve the reliability and stability of frequency converter in vibration environment.

[0042] The symmetrically arranged circuit board 3 and the cleverly laid-out internal components make full use of the internal space of the housing 1, effectively reducing the overall size of the inverter. Meanwhile, the integrated design of the heat dissipation mechanism 2 and the housing 1 avoids additional space occupation, meeting the installation requirements of space-constrained environments. The combination of the thermally conductive silicone pad 23, the N-shaped aluminum fin 24, and the heat dissipation fins 25 in the heat dissipation mechanism 2 achieves efficient heat conduction and dissipation. The flexible flat air duct 22 and its internal heat dissipation channel 201 promote air convection, further enhancing heat dissipation capacity and ensuring that the circuit board 3 maintains a suitable temperature during operation, extending the inverter's service life.

[0043] The above description is only the best implementation method adopted in this application in combination with current practical needs, but the scope of protection of this application is not limited thereto.

Claims

1. A compact anti-vibration frequency converter comprising a housing (1) and a circuit board (3) arranged inside the housing (1), characterized in that, Two sets of circuit boards (3) are symmetrically arranged. The housing (1) is also provided with slide rods (4). The four sets of slide rods (4) are evenly distributed at equal angles. The upper and lower ends of the slide rods (4) are fixed with assembly plates (6). The housing (1) is fixed with an assembly round seat (8) that matches the assembly plate (6). An axial buffer ring group (7) is provided between the assembly plate (6) and the assembly round seat (8). The circuit board (3) has four corners with sliding sleeves (31) that match the sliding rod (4), and anti-vibration springs (5) are fixed between the sliding sleeves (31) and the sliding rod (4).

2. The vibration-resistant compact frequency converter according to claim 1, characterized in that, The anti-vibration spring (5) is a conical spring structure, and the anti-vibration spring (5) has an elastic force that drives the two sets of circuit boards (3) to approach each other.

3. The compact anti-vibration frequency converter according to claim 1, characterized in that The assembly round base (8) is fixed with a mating round platform (81), and the side of the assembly plate (6) is provided with a fastening cover (61) that cooperates with the mating round platform (81). A damping ring (82) is also fixed on the circumferential side of the mating round platform (81). The assembly plate (6) is provided with a number of balls (62) on the side opposite to the mating truncated cone (81), and the balls (62) are evenly distributed at equal angles.

4. The compact anti-vibration frequency converter according to claim 3, characterized in that The axial buffer ring assembly (7) includes a fixed ring (71), which is fixed in the assembly round seat (8). Several elastic rings (72) are fixed on the fixed ring (71), and the elastic rings (72) are evenly distributed at equal angles. The elastic ring (72) has an elastic force that drives the axis of the assembly disk (6) to approach the axis of the assembly base (8), and the thickness of the elastic ring (72) gradually decreases away from the fixed ring (71).

5. The compact anti-vibration frequency converter according to claim 1, characterized in that The housing (1) includes an upper housing (11) and a lower housing (12). Two sets of mounting round seats (8) are respectively fixed inside the upper housing (11) and the lower housing (12). A heat dissipation mechanism (2) is also clamped on the side opposite to the lower housing (12). The heat dissipation mechanism (2) includes two sets of symmetrically arranged port rings (21). An elastic flat air duct (22) is fixed between the two sets of port rings (21). The elastic flat air duct (22) contains... Two sets of N-type aluminum sheets (24) are symmetrically arranged on the sides. Two sets of thermally conductive silicone pads (23) are symmetrically arranged on the outer side of the elastic flat air duct (22). The thermally conductive silicone pads (23) are fixed to the circuit board (3) by thermally conductive adhesive. Adjacent thermally conductive silicone pads (23) and N-type aluminum sheets (24) are fixed by several equidistantly arranged elastic silicone pillars (26). The elastic flat air duct (22) is provided with through holes (221) that match the elastic silicone pillars (26). The two ends of the N-type aluminum sheet (24) extend through the elastic flat air duct (22) and are attached to one side of the outer wall of the housing (1). A heat dissipation fin (25) is fixed on the side of the N-type aluminum sheet (24) away from the housing (1).

6. The compact anti-vibration frequency converter according to claim 5, characterized in that The elastic flat air duct (22) is sandwiched between two sets of circuit boards (3). The elastic flat air duct (22) has an elastic force that drives the two sets of circuit boards (3) away from each other. The elastic flat air duct (22) is also provided with a heat dissipation channel (201). The upper housing (11) and the lower housing (12) are each fixed with a connecting skirt (13) on the opposite side. The connecting skirt (13) is provided with a sealing notch (131) for fastening the sealing port ring (21). The upper housing (11) and the lower housing (12) are respectively fixed with a wiring terminal (111) and a bolt hole (121) on the side away from each other.

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