High-safety frequency converter

Abstract

The utility model relates to the technical field of frequency converters, in particular to a high-safety frequency converter which comprises a box body, a stepped mounting plate is arranged in the box body, a plurality of input terminals and output terminals are arranged on the stepped mounting plate, and the input terminals and the output terminals are arranged on the stepped mounting plate in an up-down staggered mode. The application has the effect of reducing the short circuit condition caused by the root contact of the wire harness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frequency converters, and particularly relates to a high-safety frequency converter. BACKGROUND

[0002] A frequency converter is a power control device for controlling an alternating current motor by changing the frequency of the power supply of the motor through variable frequency technology and microelectronic technology. The frequency converter provides the required power supply voltage for the motor according to the actual needs of the motor, so as to achieve the purposes of energy saving and speed regulation. In addition, the frequency converter has many protection functions, such as overcurrent, overvoltage and overload protection.

[0003] The present application discloses a convenient disassembly and maintenance type frequency converter shell structure, which comprises a lower shell, a heat dissipation structure arranged in the lower shell, a top shaft arranged in the lower shell, and a threaded hole formed in the top of the top shaft; an upper shell, the bottom of the upper shell is clamped on the top end of the lower shell, the upper shell has a bottom plate and is threadedly assembled on the top shaft; a clamping opening is arranged on the side of the upper shell, a top cover is arranged on the upper shell, and an elastic clamping piece is arranged on the top cover and matched with the clamping opening; a slot is formed at one end of the upper shell, a C-shaped embedding groove is formed in the inner side of the slot, a wire arrangement plate is clamped in the embedding groove, and a plurality of wire arrangement openings are formed in the bottom of the wire arrangement plate.

[0004] With regard to the related technology in the above, the inventor finds that the wiring terminals are arranged in a straight line with the terminal row and the wire arrangement plate, so that the input and output are arranged on the left and right sides, the distance between the root of the wire harness and the terminal is short, and the root of the wire harness is easily moved when the external force is applied to the outside of the wire harness, so that the short circuit condition is easily caused. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above technical problems, the present application provides a high-safety frequency converter, which has the advantages of reducing the short circuit condition caused by the contact between the roots of the wire harnesses.

[0006] In order to achieve the above purpose, the technical scheme of the present application is as follows:

[0007] A high-safety frequency converter comprises a box body, a stepped mounting plate arranged in the box body, a plurality of input terminals and output terminals arranged on the stepped mounting plate, and the input terminals and the output terminals are arranged in a staggered manner on the stepped mounting plate.

[0008] The above technical scheme is realized, so that the roots of the input wire harnesses and the output wire harnesses are not in contact with each other after the input wire harnesses and the output wire harnesses are connected to the corresponding input terminals and output terminals, and the distance between the input wire harnesses or the output wire harnesses on the same horizontal plane is large, so that the short circuit condition caused by the contact between the roots of the wire harnesses is further reduced.

[0009] As a preferred scheme of the present application, the stepped mounting plate comprises a first mounting plate and a second mounting plate, and an insulation plate is arranged between the first mounting plate and the second mounting plate for connecting the insulation plates to each other.

[0010] The above technical solution is implemented, the input terminals are arranged on the first mounting plate, the output terminals are arranged on the second mounting plate, and the insulation plate between the first mounting plate and the second mounting plate can further play an insulation protection role.

[0011] As a preferred scheme of the present application, the insulation protection seat is arranged between each input terminal or output terminal and the stepped mounting plate.

[0012] The above technical solution is implemented, so that the input terminals and the output terminals are protected by the insulation protection seat.

[0013] As a preferred scheme of the present application, the insulation protection seat comprises a seat body, a limiting claw is arranged on a bottom wall of the seat body, a fixing groove for clamping the limiting claw is arranged on the stepped mounting plate, an embedding groove for embedding a wiring terminal is arranged on the seat body, and the seat body is locked on the stepped mounting plate by a screw away from the limiting claw.

[0014] The above technical solution is implemented, so that after the wiring terminal is fixed in the embedding groove, the wiring terminal is limited and protected by the seat body on both sides, thereby reducing the occurrence of short circuit and preventing the occurrence of arc discharge and the like. A threaded hole is arranged at the bottom of the embedding groove, so as to facilitate screwing of a wire harness to the corresponding input terminal or output terminal.

[0015] As a preferred scheme of the present application, the embedding groove is provided with a threaded hole at the bottom.

[0016] The above technical solution is implemented, so as to facilitate screwing of a wire harness to the corresponding input terminal or output terminal.

[0017] As a preferred scheme of the present application, the box body comprises a bottom shell and a cover plate, a pair of L-shaped foot plates are detachably connected to the bottom of the bottom shell, and mounting holes are arranged on the L-shaped foot plates.

[0018] The above technical solution is implemented, so that after the box body of the entire frequency converter is damaged by knocking during transportation, only the L-shaped foot plates need to be replaced to ensure subsequent installation.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] 1. make corresponding input harness and output harness access corresponding input terminal and output terminal, the root of input harness and output harness does not contact each other, the spacing between input harness or output harness on the same horizontal plane is large, thereby further reducing the short circuit situation of the contact of the root of the harness. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is the overall structure schematic diagram of the embodiment of the present application.

[0023] Figure 2 is the internal structure schematic diagram of the embodiment of the present application.

[0024] Figure 3 is the structure schematic diagram of the insulation protection seat in the embodiment of the present application.

[0025] Reference signs: 1, box body; 11, bottom shell; 12, cover plate; 13, L-shaped foot plate; 2, stepped mounting plate; 21, first mounting plate; 22, second mounting plate; 23, insulation plate; 24, fixing groove; 5, insulation protection seat; 51, seat body; 52, embedding groove; 53, limiting claw; 54, threaded hole; 6, harness hole; 7, input terminal; 8, output terminal. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings Figures 1-3 The present application will be further described in detail.

[0027] The embodiment of the present application discloses a high safety frequency converter. Referring to Figure 1 , the high safety frequency converter comprises a box body 1, a stepped mounting plate 2 is arranged in the box body 1, a plurality of input terminals 3 and output terminals 4 are arranged on the stepped mounting plate 2, and the plurality of input terminals 3 and output terminals 4 are arranged in a staggered manner on the stepped mounting plate 2. That is, the input terminals 3 and output terminals 4 are arranged in a staggered manner, so that the spacing between the plurality of input terminals 3 or output terminals 4 on the same horizontal plane can be increased. Therefore, after the corresponding input harness and output harness access the corresponding input terminal 3 and output terminal 4, the root of the input harness and output harness does not contact each other, and the spacing between the input harness or output harness on the same horizontal plane is large, thereby further reducing the short circuit situation of the contact of the root of the harness.

[0028] The stepped mounting plate 2 comprises a first mounting plate 21 and a second mounting plate 22, and an insulation plate 23 is arranged between the first mounting plate 21 and the second mounting plate 22 for connecting the first mounting plate 21 and the second mounting plate 22 to each other. A plurality of input terminals 3 are arranged on the first mounting plate 21, a plurality of output terminals 4 are arranged on the second mounting plate 22, and the insulation plate 23 between the first mounting plate 21 and the second mounting plate 22 can further play an insulation protection role.

[0029] An insulation protection seat 5 is arranged between each input terminal 3 or output terminal 4 and the stepped mounting plate 2, so that the input terminal 3 and the output terminal 4 are protected by the insulation protection seat 5.

[0030] The insulation protection seat 5 comprises a seat body 51, and an embedding groove 52 for embedding a wiring terminal is arranged on the seat body 51, so that after the wiring terminal is fixed in the embedding groove 52, the wiring terminal is limited and protected by the seat body 51 on both sides, thereby reducing the occurrence of short circuit and not being in contact with the mounting plate to prevent the occurrence of arc drawing. A threaded hole 54 is arranged at the bottom of the embedding groove 52, so as to facilitate screwing the wiring harness to the corresponding input terminal 3 or output terminal 4. A limiting claw 53 is arranged on the bottom wall of the seat body 51, a fixing groove 24 for clamping the limiting claw 53 is arranged on the stepped mounting plate 2, and the side of the seat body 51 away from the limiting claw 53 is locked on the stepped mounting plate 2 by a screw, so that after the limiting claw 53 is clamped in the fixing groove 24, the installation of the insulation protection seat 5 is completed by screwing the screw, thereby making the whole insulation protection seat 5 easy to disassemble and replace.

[0031] The box body 1 comprises a bottom shell 11 and a cover plate 12, and a pair of L-shaped foot plates 13 are detachably connected to the bottom of the bottom shell 11, and mounting holes are arranged on the L-shaped foot plates 13. Thus, after the box body 1 is damaged by knocking during transportation, the subsequent installation can be ensured by only replacing the L-shaped foot plates 13.

[0032] The implementation principle of the high-safety frequency converter in the embodiment of the application is that after the corresponding input wiring harness and output wiring harness are connected to the corresponding input terminal 3 and output terminal 4, the roots of the input wiring harness and the output wiring harness do not contact each other, and the spacing between the input wiring harnesses or the output wiring harnesses on the same horizontal plane is large, thereby further reducing the short circuit caused by the contact between the roots of the wiring harnesses.

[0033] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A high-safety frequency converter, characterized in that: Includes a housing (1), inside which is a stepped mounting plate (2), on which are a plurality of input terminals (3) and output terminals (4), the plurality of input terminals (3) and output terminals (4) being staggered vertically on the stepped mounting plate (2).

2. The high-safety frequency converter according to claim 1, characterized in that: The stepped mounting plate (2) includes a first mounting plate (21) and a second mounting plate (22), with an insulating plate (23) for interconnection provided between the first mounting plate (21) and the second mounting plate (22).

3. The high-safety frequency converter according to claim 1, characterized in that: An insulating protective seat (5) is provided between each of the input terminals (3) or output terminals (4) and the stepped mounting plate (2).

4. A high-safety frequency converter according to claim 3, characterized in that: The insulating protective base (5) includes a base body (51), the bottom wall of the base body (51) is provided with a limiting claw (53), the stepped mounting plate (2) is provided with a fixing groove (24) for the limiting claw (53) to be inserted, the base body (51) is provided with an insertion groove (52) for the wiring terminal to be inserted, and the side of the base body (51) away from the limiting claw (53) is locked to the stepped mounting plate (2) by screws.

5. A high-safety frequency converter according to claim 4, characterized in that: The bottom of the insert groove (52) is provided with a threaded hole (54).

6. A high-safety frequency converter according to claim 1, characterized in that: The housing (1) includes a bottom shell (11) and a cover plate (12). The bottom of the bottom shell (11) is detachably connected to a pair of L-shaped foot plates (13), and the L-shaped foot plates (13) are provided with mounting holes.

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