Box structure of high-power frequency converter

Abstract

The utility model discloses a high-power frequency converter box body structure, which comprises a box body shell, the box body shell comprises a bottom shell, a side plate and an upper cover plate, a partition plate and a PCB (printed circuit board) are arranged in the box body shell, a capacitor sleeve is arranged on the partition plate, the capacitor sleeve is sleeved on the outer side of a capacitor part arranged on the PCB, a plurality of wire holders are arranged on the partition plate, and copper bar parts are arranged between the wire holders and the PCB. The copper bar piece is used for conducting an external cable extending into the box body shell and the PCB; according to the structural design of the frequency converter box body, the wiring complexity is reduced and the installation and the use are convenient by arranging the wire holders and arranging the wire holders in the same cavity and arranging the copper bar plates for communication, the rubber sleeves are further arranged on the capacitors, and the capacitors are fixed through the fixing rings to protect the safe use of the capacitors, so that the service life of the frequency converter box body is prolonged. The rubber sleeve is used for fixing the capacitor, so that shaking and rubbing of the partition plate during operation are avoided, and dust cannot enter even if the diameter of the through hole in the partition plate is larger than that of the capacitor.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converter boxes, in particular to a high-power frequency converter box structure. Background Art

[0002] The inverter is one of the indispensable components in modern motor speed control and energy-saving products. It is widely used in the industrial field. With the advancement of science and technology, the inverter technology has also developed rapidly. Therefore, more and more companies have begun to pay attention to the mass production of inverters and are constantly looking for ways to quickly assemble inverters.

[0003] In the prior art, the main circuit board of the inverter is fixed on a fixed plate and then placed in a shell, and the capacitor on the main circuit board passes through a hole reserved on the fixed plate. If the hole on the fixed plate is just right, the hole on the fixed plate may scratch and puncture the surface of the capacitor due to vibration during operation. If the hole on the fixed plate is enlarged, the dustproof effect will be poor, and if the hole is not large enough, the capacitor will still scratch due to vibration from the outside world. In addition, the connection between the circuit board and the external cable in the prior art mostly uses an adapter terminal block, and the terminal block and the main board are connected through secondary wiring. The secondary connection cable is located in a relatively sealed chamber, which is not only easy to heat up but not easy to dissipate heat, but also the flexible cable is inconvenient to install, and a wiring harness clamp needs to be added for fixing. Based on the above-mentioned problems of the prior art, the structure inside the inverter box still needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide an improved design of the box structure of a high-power inverter, which is convenient for use and improves the sealing and dustproof performance.

[0005] The technical solution adopted by the utility model is: a high-power inverter box structure, including a box shell, the box shell includes a bottom shell, side plates and an upper cover plate, a partition and a PCB board are also arranged in the box shell, a capacitor sleeve is also arranged on the partition, the capacitor sleeve is arranged on the outside of the capacitor arranged on the PCB board, a plurality of wiring seats are also arranged on the partition, a copper busbar is arranged between the wiring seat and the PCB board, and the copper busbar is used to conduct external cables and PCB boards that are arranged in the box shell.

[0006] As a further configuration of the above solution, the capacitor sleeve includes a fixing ring and a protective sleeve, the fixing ring is bolted to the partition, and the protective sleeve is buckled on the outside of the capacitor.

[0007] As a further configuration of the above solution, a capacitor hole is provided on the partition, the capacitor hole is larger than the size of the capacitor, and a rubber sealing ring is provided between the fixing ring, the partition and the capacitor.

[0008] As a further setting of the above solution, a wiring hole is provided on the side plate, and a hole plug with a sealing blade is provided on the wiring hole.

[0009] As a further setting of the above solution, a copper busbar slot, a bolt slot and a fixing hole are provided on the wiring seat. The fixing hole is used for the fixed installation of the copper busbar part and the wiring seat, and a fixing bolt is provided on the bolt slot.

[0010] Beneficial effects: In the structural design of the frequency converter box body of the present invention, by setting the wiring seat and arranging the wiring seats in the same chamber, and combining with the way of connecting the copper busbar plates, the complexity of wiring is reduced, which is convenient for installation and use. Further, a rubber sleeve is provided on the capacitor, and the fixing ring is used to fix and protect the safe use of the capacitor. The rubber sleeve fixes the capacitor component to prevent its jitter during operation and rubbing against the partition. Second, even if the through hole on the partition is relatively large in diameter compared to the capacitor, no dust will enter. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the frequency converter box body of the present invention.

[0012] Figure 2 It is a schematic diagram of the internal structure of the upper chamber of this embodiment.

[0013] Figure 3 It is a schematic diagram of the internal structure of the frequency converter box body of this embodiment.

[0014] Figure 4 It is a schematic diagram of the wiring seat structure of this embodiment.

[0015] Figure 5 It is a schematic diagram of the capacitor component structure of this embodiment.

[0016] Reference numerals: 1, box body shell; 11, bottom shell; 12, side plate; 13, upper cover plate; 14, wiring hole; 15, sealing blade; 16, hole plug; 2, partition; 21, wiring seat; 22, copper busbar part; 25, copper busbar slot; 26, bolt slot; 27, fixing hole; 28, fixing bolt; 29, capacitor hole; 3, PCB board; 31, capacitor component; 35, rubber sealing ring; 4, capacitor sleeve; 41, fixing ring; 42, protective sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to be able to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] Such as Figures 1-5A high-power frequency converter box structure shown in the figure includes a box shell 1, and the box shell 1 includes a bottom shell 11, side plates 12 and an upper cover plate 13. A partition 2 and a PCB board 3 are further arranged inside the box shell 1. A capacitor sleeve 4 is also arranged on the partition 2, and the capacitor sleeve 4 is sleeved outside a capacitor component 31 arranged on the PCB board 3. A plurality of wiring seats 21 are arranged on the partition 2, and a copper busbar component 22 is arranged between the wiring seat 21 and the PCB board 3. The copper busbar component 22 is used to conduct an external cable arranged inside the box shell 1 and the PCB board 3.

[0019] As a further setting of the above solution, the capacitor sleeve 4 includes a fixing ring 41 and a protective sleeve 42. The fixing ring 41 is bolt-fixed on the partition 2, and the protective sleeve 42 is buckled outside the capacitor component 31.

[0020] As a further setting of the above solution, a capacitor hole 29 is arranged on the partition 2. The capacitor hole 29 is larger than the size of the capacitor component 31, and a rubber sealing ring 35 is arranged between the fixing ring 41, the partition 2 and the capacitor component 31.

[0021] As a further setting of the above solution, a wiring hole 14 is arranged on the side plate 12, and a hole plug 16 with a sealing blade 15 is arranged on the wiring hole 14.

[0022] As a further setting of the above solution, a copper busbar slot 25, a bolt slot 26 and a fixing hole 27 are arranged on the wiring seat 21. The fixing hole 27 is used for the fixed installation of the copper busbar component 22 and the wiring seat 21, and a fixing bolt 28 is arranged on the bolt slot 26.

[0023] Reference Figure 1 The frequency converter box structure of the present invention shown in the figure is mainly composed of a box shell 1 including a bottom shell 11, an upper cover plate 13 and two side plates 12, with a partition 2, a PCB board 3, etc. placed inside. The PCB board 3 is installed on the partition 2. In order to facilitate the access of external cables on the partition 2, wiring seats 21 are arranged. In this embodiment, the PCB board 3 and the wiring seats 21 are conductively connected by a copper busbar component 22. The setting of the copper busbar component 22 is beneficial to heat dissipation and convenient for installation compared with cables and wires, as Figure 2 shown in the figure. In order to avoid the possible downward bending and jitter of the copper busbar component 22 due to its excessive length, a fixing seat can also be set. In addition, as Figure 3 and Figure 2 shown in the figure, the external cables of this embodiment extend from the wiring holes 14 on the side plates 12, and all the wiring seats 21 are arranged on one side of the upper part of the partition 2. As Figure 2 shown in the figure, only by disassembling the upper cover plate 13 can the access and installation of the wiring seats 21 on the partition 2 be conveniently carried out.

[0024] As Figures 1-3At the wiring hole 14 on the side plate 12 of the present embodiment shown, there is also a hole plug 16 with a sealing blade 15. During use, the staff extends the external cable through the hole plug 16. By placing the terminal ring of the external cable on the fixing bolt 28, and then tightening it with a nut, the external cable is connected and clamped.

[0025] Furthermore, on the partition plate 2 of the present embodiment, there is also a capacitor hole 29. During installation, the capacitor component 31 is passed through the capacitor hole 29. A rubber sealing ring 35 is sleeved outside the capacitor component 31, and a capacitor sleeve 4 is sleeved outside it for fixation. In the present embodiment, the rubber sealing ring 35 is sleeved outside the capacitor component 31, and its ring edge is stuck on the partition plate 2 and fixed tightly by screws through the capacitor sleeve 4. The rubber sealing ring 35 of the present embodiment not only forms a buffer and anti-scratching layer between the partition plate 2 and the capacitor component 31 but also can block the gap.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the present invention's solution and its equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A high-power inverter box structure, comprising a box shell (1), wherein the box shell (1) comprises a bottom shell (11), a side plate (12) and an upper cover plate (13), characterized in that: A partition (2) and a PCB board (3) are also provided in the box shell (1); a capacitor sleeve (4) is also provided on the partition (2); the capacitor sleeve (4) is sleeved on the outside of a capacitor component (31) provided on the PCB board (3); a plurality of wiring seats (21) are also provided on the partition (2); a copper busbar (22) is provided between the wiring seat (21) and the PCB board (3); the copper busbar (22) is used to conduct external cables and cables provided in the box shell (1) and the PCB board (3).

2. A high-power inverter box structure according to claim 1, characterized in that: The capacitor sleeve (4) comprises a fixing ring (41) and a protective sleeve (42); the fixing ring (41) is fixed on the partition (2) by bolts, and the protective sleeve (42) is buckled on the outside of the capacitor (31).

3. A high-power inverter box structure according to claim 2, characterized in that: A capacitor hole (29) is provided on the partition (2), the capacitor hole (29) is larger than the size of the capacitor (31), and a rubber sealing ring (35) is provided between the fixing ring (41), the partition (2) and the capacitor (31).

4. A high-power inverter box structure according to claim 1, characterized in that: A wiring hole (14) is provided on the side plate (12), and a hole plug (16) with a sealing blade (15) is provided on the wiring hole (14).

5. The high-power inverter box structure according to claim 1 is characterized in that: The wiring base (21) is provided with a copper busbar slot (25), a bolt slot (26) and a fixing hole (27); the fixing hole (27) is used for fixing the copper busbar (22) to the wiring base (21); and the bolt slot (26) is provided with a fixing bolt (28).

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