Frequency converter and assembling method thereof

Abstract

The invention discloses a frequency converter and an assembling method thereof, the frequency converter comprises a bottom plate, a shell, a circuit board, a mounting seat and an operation panel, the shell detachably covers the bottom plate, the circuit board is arranged in the shell, the circuit board is provided with a control unit, a rectifier, an inverter, a detection unit and a capacitor, the upper end wall of the shell is concavely provided with a first accommodating groove, and the upper end wall of the shell is provided with a second accommodating groove; the mounting base is detachably embedded in the first containing groove, a second containing groove is formed in the upper end wall of the mounting base in a concave mode, the operation panel is detachably embedded in the second containing groove, a wiring terminal is arranged on the rear end wall of the mounting base, a display screen, a rotary knob, keys and a state indicator lamp are arranged on the upper end wall of the operation panel, and the mounting base is electrically connected with the circuit board. And the operation panel is electrically connected with the mounting seat. According to the technical scheme, the frequency converter can be assembled and disassembled more conveniently and quickly, the mounting base and the control panel can be disassembled independently, and overhaul and maintenance of the frequency converter are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converters, and in particular to a frequency converter and an assembling method thereof. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The frequency converter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc. The frequency converter adjusts the voltage and frequency of the output power supply by the internal IGBT's disconnection, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions, such as overcurrent, overvoltage, overload protection, etc. With the continuous improvement of the degree of industrial automation, frequency converters have also been widely used. Frequency converters are often used in industrial automation and mechanical automation. With the development of industrial technology, frequency converters are used more and more frequently. They can not only achieve the same control purpose, but also operate more safely, energy-savingly and efficiently. They are widely used in the field of industrial automation control.

[0003] However, the assembly of existing frequency converters is complicated, time-consuming and labor-intensive, and is not conducive to subsequent inspection and maintenance. Summary of the invention

[0004] The main purpose of the present invention is to provide a frequency converter and an assembly method thereof, aiming to solve the technical problems that the existing frequency converter assembly is complicated, time-consuming and labor-intensive, and is not conducive to subsequent overhaul and maintenance.

[0005] To achieve the above-mentioned purpose, the inverter proposed in the present invention includes a base plate, a shell, a circuit board, a mounting seat and an operation panel, the shell is detachably covered on the base plate, the circuit board is arranged in the shell, and a control unit, a rectifier, an inverter, a detection unit and a capacitor are provided on the circuit board, the upper end wall of the shell is recessed with a first accommodating groove, the mounting seat is detachably embedded in the first accommodating groove, the upper end wall of the mounting seat is recessed with a second accommodating groove, the operation panel is detachably embedded in the second accommodating groove, the rear end wall of the mounting seat is provided with a wiring terminal, the upper end wall of the operation panel is provided with a display screen, a knob, a button and a status indicator light, the mounting seat is electrically connected to the circuit board, and the operation panel is electrically connected to the mounting seat.

[0006] Optionally, a plurality of first conductive pins electrically connected to the circuit board are protruding from the bottom of the first accommodating groove, a first pin seat is provided on the lower end wall of the mounting seat, the first conductive pins are respectively inserted into the first pin seat, and the first pin seat is electrically connected to the mounting seat.

[0007] Optionally, a first elastic buckle arm is convexly provided at the bottom of the first accommodating groove, a first buckle groove is concavely provided at the lower end wall of the mounting seat, and the first elastic buckle arm is detachably fixedly connected to the first buckle groove.

[0008] Optionally, a plurality of positioning columns are convexly provided on the bottom of the first accommodating groove, a plurality of positioning holes are concavely provided on the lower end wall of the mounting seat, and the positioning columns are respectively embedded in the positioning holes.

[0009] Optionally, it also includes a first screw, a second screw and a grounding conductive sheet, the bottom of the first accommodating groove is convexly provided with a first stud and a second stud, the bottom of the second accommodating groove is recessed with a first screw hole and a second screw hole, the first screw is passed through the first screw hole and is screwed on the upper end of the first stud, the grounding conductive sheet is arranged on the upper end of the second stud, the second screw is passed through the second screw hole and the grounding conductive sheet, and is screwed on the second stud.

[0010] Optionally, the two side walls of the operation panel are respectively provided with a second elastic snap arm, the two sides of the second accommodating groove are respectively recessed with a second snap groove, the second elastic snap arm is respectively detachably fixedly connected to the second snap groove, the two side walls of the second accommodating groove are respectively recessed with a U-shaped groove, and the second elastic snap arm is located on the inner side of the U-shaped groove.

[0011] Optionally, a plurality of second conductive pins are protrudingly provided at the bottom of the second accommodating groove, a second pin seat is provided at the lower end wall of the operation panel, and the second conductive pins are respectively inserted into the second pin seat.

[0012] Optionally, a plurality of third elastic snap-in arms are protruding from both sides of the bottom plate, a plurality of third snap-in grooves are recessed at the lower ends of the two side walls of the shell, and the third elastic snap-in arms are detachably fixedly connected to the third snap-in grooves.

[0013] Optionally, a plurality of mounting holes and U-shaped holes are respectively recessed at both ends of the bottom plate.

[0014] On the other hand, the present invention further provides an assembly method of the frequency converter according to the above, the assembly method comprising the following steps: S100: First, assemble the control unit, the rectifier, the inverter, the detection unit, the capacitor and the circuit board on the bottom plate to form an integral assembly; S200: Assemble the shell and the bottom plate by buckling the shell onto the bottom plate and buckling the third buckle grooves on both side walls of the shell with the third elastic buckle arms on both sides of the bottom plate, thereby fixing the shell and the bottom plate; S300: Align the positioning hole at the bottom of the mounting seat with the positioning hole at the bottom of the first receiving groove and press the mounting seat into the first receiving groove at the upper end of the housing, and fix the first buckle groove at the bottom of the mounting seat with the first elastic buckle arm at the bottom of the first receiving groove, and insert the first conductive pins into the first pin holders respectively to achieve electrical connection; S400: Pass the first screw and the second screw through the first screw hole and the second screw hole at the bottom of the first receiving groove respectively, and screw them on the first stud and the second stud respectively, further fix the mounting base on the housing, and realize grounding by passing the second screw through the grounding conductive sheet; S500: Finally, fix the operation panel to the second receiving groove at the upper end of the mounting base, and fix the control panel to the mounting base by respectively fixing the second elastic snap arms on both sides of the operation panel to the second snap grooves on both sides of the second receiving groove. At the same time, a plurality of second conductive pins are protruded from the bottom of the second receiving groove to enter and exit the second pin seat on the lower end wall of the operation panel to achieve electrical connection, thereby completing the assembly of the inverter.

[0015] The technical solution of the present invention has the following beneficial effects: the technical solution of the present invention is that a first accommodating groove is recessed in the upper end wall of the shell, the mounting seat is detachably embedded in the first accommodating groove, the upper end wall of the mounting seat is recessed in the second accommodating groove, the operation panel is detachably embedded in the second accommodating groove, the rear end wall of the mounting seat is provided with a wiring terminal, the upper end wall of the operation panel is provided with a display screen, a knob, a button and a status indicator light, the mounting seat is electrically connected to the circuit board, and the operation panel is electrically connected to the mounting seat, so that the assembly of the inverter is more convenient and quick, the operation is simple, and it is firm and reliable, thereby ensuring the practical safety of the inverter and improving the assembly efficiency. The mounting seat and the control panel can be disassembled separately, which is convenient for the disassembly, inspection and maintenance of the inverter, and the installation is convenient and quick, the structure is compact, the cost is low, and space is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a frequency converter according to an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure of a frequency converter according to an embodiment of the present invention from another perspective; Figure 3 A schematic diagram of a partial structure of a frequency converter according to an embodiment of the present invention; Figure 4 A schematic diagram of a partially exploded structure of a frequency converter according to an embodiment of the present invention; Figure 5 It is another partial exploded structural schematic diagram of a frequency converter according to an embodiment of the present invention; Figure 6 It is another partial exploded structural schematic diagram of a frequency converter according to an embodiment of the present invention; Figure 7 The present invention is a flowchart of a method for assembling a frequency converter according to an embodiment of the present invention.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] The invention provides a frequency converter and an assembling method thereof.

[0023] like Figures 1 to 6As shown, in one embodiment of the present invention, the frequency converter includes a base plate 101, a housing 102, a circuit board 103, a mounting seat 104 and an operation panel 105. The housing 102 is detachably covered on the base plate 101, the circuit board 103 is arranged in the housing 101, and a control unit 1031, a rectifier 1032, an inverter 1033, a detection unit 1034 and a capacitor 1035 are arranged on the circuit board 103. A first accommodating groove 1021 is recessed on the upper end wall of the housing 102, and the mounting seat 104 is provided with a first accommodating groove 1021. 04 is detachably embedded in the first accommodating groove 1021, the upper end wall of the mounting seat 104 is recessed with a second accommodating groove 1041, the operation panel 105 is detachably embedded in the second accommodating groove 1041, the rear end wall of the mounting seat 104 is provided with a wiring terminal 1042, the upper end wall of the operation panel 105 is provided with a display screen 1051, a knob 1052, a button 1053 and a status indicator light 1054, the mounting seat 104 is electrically connected to the circuit board 103, and the operation panel 105 is electrically connected to the mounting seat 104.

[0024] Specifically, a plurality of first conductive pins 1022 electrically connected to the circuit board 103 are protruding from the bottom of the first accommodating groove 1021, and a first pin seat 1043 is provided on the lower end wall of the mounting seat 104. The first conductive pins 1022 are respectively inserted into the first pin seat 1043, and the first pin seat 1043 is electrically connected to the mounting seat 104, so that the electrical connection between the mounting seat and the shell is convenient and quick.

[0025] Specifically, a first elastic snap arm 1023 is convexly provided at the bottom of the first accommodating groove 1021, and a first snap groove 1044 is concavely provided on the lower end wall of the mounting seat 104. The first elastic snap arm 1023 and the first snap groove 1044 are detachably fixedly connected, making the assembly and disassembly between the mounting seat and the shell more convenient and quick.

[0026] Specifically, a plurality of positioning columns 1024 are convexly provided at the bottom of the first accommodating groove 1021, and a plurality of positioning holes 1045 are concavely provided at the lower end wall of the mounting seat 104. The positioning columns 1024 are respectively embedded in the positioning holes 1045 to play the role of alignment and limiting, thereby facilitating the assembly between the mounting seat and the shell and preventing displacement.

[0027] Specifically, it also includes a first screw 106, a second screw 107 and a grounding conductive sheet 108. The bottom of the first accommodating groove 1021 is convexly provided with a first stud 1025 and a second stud 1026. The bottom of the second accommodating groove 1041 is concavely provided with a first screw hole 1046 and a second screw hole 1047. The first screw 106 is passed through the first screw hole 1046 and is screwed on the upper end of the first stud 1025. The grounding conductive sheet 108 is arranged on the upper end of the second stud 1026. The second screw 107 is passed through the second screw hole 1047 and the grounding conductive sheet 108, and is screwed on the second stud 1026, which effectively ensures the assembly reliability between the mounting base and the shell.

[0028] Specifically, the two side walls of the operation panel 105 are respectively provided with a second elastic snap arm 1055, and the two sides of the second accommodating groove 1041 are respectively recessed with a second snap groove 1048, the second elastic snap arm 1055 is respectively detachably fixedly connected to the second snap groove 1048, and the two side walls of the second accommodating groove 1041 are respectively recessed with a U-shaped groove 1049, and the second elastic snap arm 1055 is located on the inner side of the U-shaped groove 1049, making the assembly and disassembly between the control panel and the mounting base more convenient and quick.

[0029] Specifically, a plurality of second conductive pins 10410 are protruding from the bottom of the second accommodating groove 1041, and a second pin seat 1056 is provided on the lower end wall of the operation panel 105. The second conductive pins 10410 are respectively inserted into the second pin seat 1056, so that the electrical connection between the control panel and the mounting base is more convenient.

[0030] Specifically, a plurality of third elastic snap arms 1011 are protruded from both sides of the base plate 101, and a plurality of third snap grooves 1027 are recessed at the lower ends of the two side walls of the shell 102. The third elastic snap arms 1011 and the third snap grooves 1027 are detachably fixedly connected, making the assembly and disassembly between the shell and the base plate more convenient and quick, without the need to tighten screws, thereby facilitating maintenance.

[0031] Specifically, a plurality of mounting holes 1012 and U-shaped holes 1013 are respectively recessed at both ends of the bottom plate 101 to facilitate installation and fixation of the inverter.

[0032] On the other hand, Figure 7 As shown, the present invention also proposes an assembly method according to the above-mentioned inverter, and the assembly method comprises the following steps: S100: First, assemble the control unit, the rectifier, the inverter, the detection unit, the capacitor and the circuit board on the bottom plate to form an integral assembly; S200: Assemble the shell and the bottom plate by buckling the shell onto the bottom plate and buckling the third buckle grooves on both side walls of the shell with the third elastic buckle arms on both sides of the bottom plate, thereby fixing the shell and the bottom plate; S300: Align the positioning hole at the bottom of the mounting seat with the positioning hole at the bottom of the first receiving groove and press the mounting seat into the first receiving groove at the upper end of the housing, and fix the first buckle groove at the bottom of the mounting seat with the first elastic buckle arm at the bottom of the first receiving groove, and insert the first conductive pins into the first pin holders respectively to achieve electrical connection; S400: Pass the first screw and the second screw through the first screw hole and the second screw hole at the bottom of the first receiving groove respectively, and screw them on the first stud and the second stud respectively, further fix the mounting base on the housing, and realize grounding by passing the second screw through the grounding conductive sheet; S500: Finally, fix the operation panel to the second receiving groove at the upper end of the mounting base, and fix the control panel to the mounting base by respectively fixing the second elastic snap arms on both sides of the operation panel to the second snap grooves on both sides of the second receiving groove. At the same time, a plurality of second conductive pins are protruded from the bottom of the second receiving groove to enter and exit the second pin seat on the lower end wall of the operation panel to achieve electrical connection. The assembly of the inverter is then completed, and the mounting base and the control panel can be disassembled separately, which is convenient for the inspection and maintenance of the inverter. The installation is convenient and quick, and the operation is simple.

[0033] Specifically, the technical solution of the present invention is to have a first accommodating groove recessed in the upper end wall of the shell, the mounting seat is detachably embedded in the first accommodating groove, the upper end wall of the mounting seat is recessed in the second accommodating groove, the operation panel is detachably embedded in the second accommodating groove, the rear end wall of the mounting seat is provided with a wiring terminal, the upper end wall of the operation panel is provided with a display screen, knobs, buttons and status indicator lights, the mounting seat is electrically connected to the circuit board, and the operation panel is electrically connected to the mounting seat, so that the assembly of the inverter is more convenient and quick, the operation is simple, and it is firm and reliable, thereby ensuring the practical safety of the inverter and improving the assembly efficiency. The mounting seat and the control panel can be disassembled separately, which is convenient for the disassembly, inspection and maintenance of the inverter, and the installation is convenient and quick, the structure is compact, the cost is low, and space is saved.

[0034] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A frequency converter, characterized in that: It includes a base plate, a shell, a circuit board, a mounting seat and an operation panel, the shell is detachably covered on the base plate, the circuit board is arranged in the shell, and a control unit, a rectifier, an inverter, a detection unit and a capacitor are provided on the circuit board, the upper end wall of the shell is recessed with a first accommodating groove, the mounting seat is detachably embedded in the first accommodating groove, the upper end wall of the mounting seat is recessed with a second accommodating groove, the operation panel is detachably embedded in the second accommodating groove, the rear end wall of the mounting seat is provided with a wiring terminal, the upper end wall of the operation panel is provided with a display screen, a knob, a button and a status indicator light, the mounting seat is electrically connected to the circuit board, and the operation panel is electrically connected to the mounting seat.

2. The frequency converter according to claim 1, characterized in that: A plurality of first conductive pins electrically connected to the circuit board are protruding from the bottom of the first accommodating groove, and a first pin seat is provided on the lower end wall of the mounting seat. The first conductive pins are respectively inserted into the first pin seat, and the first pin seat is electrically connected to the mounting seat.

3. The frequency converter according to claim 1, characterized in that: A first elastic buckle arm is convexly provided at the bottom of the first accommodating groove, and a first buckle groove is concavely provided on the lower end wall of the mounting seat. The first elastic buckle arm is detachably fixedly connected to the first buckle groove.

4. The frequency converter according to claim 1, characterized in that: A plurality of positioning columns are convexly arranged at the bottom of the first accommodating groove, a plurality of positioning holes are concavely arranged at the lower end wall of the mounting seat, and the positioning columns are respectively embedded in the positioning holes.

5. The frequency converter according to claim 1, characterized in that: It also includes a first screw, a second screw and a grounding conductive sheet, the bottom of the first accommodating groove is convexly provided with a first stud and a second stud, the bottom of the second accommodating groove is concavely provided with a first screw hole and a second screw hole, the first screw is passed through the first screw hole and is screwed on the upper end of the first stud, the grounding conductive sheet is arranged on the upper end of the second stud, the second screw is passed through the second screw hole and the grounding conductive sheet, and is screwed on the second stud.

6. The frequency converter according to claim 1, characterized in that: A second elastic snap-in arm is respectively provided on both side walls of the operation panel, a second snap-in groove is respectively recessed on both sides of the second accommodating groove, the second elastic snap-in arm is respectively detachably fixedly connected to the second snap-in groove, a U-shaped groove is respectively recessed on both side walls of the second accommodating groove, and the second elastic snap-in arm is located on the inner side of the U-shaped groove.

7. The frequency converter according to claim 1, characterized in that: A plurality of second conductive pins are protrudingly provided at the bottom of the second accommodating groove, a second pin seat is provided at the lower end wall of the operation panel, and the second conductive pins are respectively inserted into the second pin seat.

8. The frequency converter according to claim 1, characterized in that: A plurality of third elastic buckle arms are protruded from both sides of the bottom plate, and a plurality of third buckle grooves are recessed at the lower ends of the two side walls of the shell. The third elastic buckle arms are detachably fixedly connected to the third buckle grooves.

9. The frequency converter according to claim 1, characterized in that: The two ends of the bottom plate are respectively concavely provided with a plurality of mounting holes and U-shaped holes.

10. The method for assembling a frequency converter according to any one of claims 1 to 9, characterized in that: The assembly method comprises the following steps: S100: First, assemble the control unit, the rectifier, the inverter, the detection unit, the capacitor and the circuit board on the bottom plate to form an integral assembly; S200: Assemble the shell and the bottom plate by buckling the shell onto the bottom plate and buckling the third buckle grooves on both side walls of the shell with the third elastic buckle arms on both sides of the bottom plate, thereby fixing the shell and the bottom plate; S300: Align the positioning hole at the bottom of the mounting seat with the positioning hole at the bottom of the first receiving groove and press the mounting seat into the first receiving groove at the upper end of the housing, and fix the first buckle groove at the bottom of the mounting seat with the first elastic buckle arm at the bottom of the first receiving groove, and insert the first conductive pins into the first pin holders respectively to achieve electrical connection; S400: Pass the first screw and the second screw through the first screw hole and the second screw hole at the bottom of the first receiving groove respectively, and screw them on the first stud and the second stud respectively, further fix the mounting base on the housing, and realize grounding by passing the second screw through the grounding conductive sheet; S500: Finally, fix the operation panel to the second receiving groove at the upper end of the mounting base, and fix the control panel to the mounting base by respectively fixing the second elastic snap arms on both sides of the operation panel to the second snap grooves on both sides of the second receiving groove. At the same time, a plurality of second conductive pins are protruded from the bottom of the second receiving groove to enter and exit the second pin seat on the lower end wall of the operation panel to achieve electrical connection, thereby completing the assembly of the inverter.

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