An operating box integrated module and a frequency converter

Abstract

The utility model discloses an operating box integrated module and frequency converter belongs to frequency converter manufacturing field. The integrated module includes base, printed board and operating box, and the side wall and top plate of base enclose and form the containing cavity of open bottom, and printed board is placed in containing cavity and is fixed by its positioning limiting structure. Operating box mounting position is equipped on the top of base, and operating box is assembled in operating box mounting position and is electrically connected with printed board. The base, printed board, operating box are assembled as integrated preinstall module, can whole dismount and arrange in the inside of equipment, also can add extension piece and expand the function of complete machine. The module is convenient to dismount and assemble, and good commonality can simplify production line assembly procedure, and the later stage maintenance work is convenient.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, and in particular to an integrated operation box module and a frequency converter. Background Technology

[0002] Inverters, as commonly used electronic control devices in industrial drive fields, are typically equipped with an operator box for parameter setting, status display, and equipment operation control. In existing solutions, the operator box and main control printed circuit board (PCB) are mostly independent components. During production and assembly, the PCB and operator box must be sequentially assembled into the inverter's housing. During later maintenance and repair, if the operator box or main control board needs repair or replacement, each component must be disassembled individually, resulting in cumbersome assembly procedures and low maintenance efficiency. Furthermore, traditional I / O boards and communication expansion boards are often located inside the inverter housing; replacing these expansion boards often requires disassembling the entire housing, making maintenance operations quite inconvenient.

[0003] Some modular panel solutions have appeared in the existing technology, but most of them only make modular designs for the operation box itself. They do not integrate the base shell that houses the main control printed circuit board, the main control printed circuit board and the operation box into a pre-assembled module that can be disassembled as a whole. The whole machine assembly stage still requires multiple steps of installation, which makes it difficult to effectively simplify the assembly process of the production line.

[0004] On the other hand, the installation structure of the inverter control box is relatively simple, usually only providing a single installation adapter structure. It is difficult to flexibly select different control box installation forms according to different layout spaces inside the inverter, thus limiting product adaptability. Utility Model Content

[0005] To overcome the above defects, this utility model provides an integrated control box module and frequency converter, which realizes modular pre-assembly, quick assembly and disassembly, simplifies the assembly process, and improves the convenience of later maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Firstly, this utility model provides an integrated control box module, including a base, a printed circuit board (PCB), and a control box. The base is integrally injection molded from insulating plastic and has side walls and a top plate. The side walls and top plate together form an open-bottomed receiving cavity, in which the PCB is disposed. An control box mounting position is provided above the base, where the control box is installed and electrically connected to the PCB. The base, PCB, and control box are assembled into an integrated pre-assembled module, which can be installed as a whole into the equipment cavity, simplifying the assembly process of the entire production line and facilitating subsequent equipment maintenance and disassembly.

[0007] In one structural configuration, the operating box mounting position is configured as a boss integrally formed with the base, protruding upwards from the top plate of the base. The top of this boss has a groove that conforms to the shape of the operating box. The operating box is fitted into the groove and secured by a snap-fit ​​mechanism. The operating box and the printed circuit board are electrically connected via connectors.

[0008] In another structural configuration, the control box mounting position is set as a support column on the base. The control box integrated module is equipped with a control box mounting frame, which snaps onto the support column. A groove adapted to the shape of the control box is provided on the top of the control box mounting frame, and the control box is embedded in the groove and locked in place by a snap-fit ​​structure. The base has a through hole through which the cable leading from the control box passes and is electrically connected to the printed circuit board in the receiving cavity.

[0009] For both of the above structural forms, a through hole is provided at the bottom of the groove of the boss or the operating box mounting frame. The connectors or cables of the operating box can pass through the through hole to achieve electrical connection with the printed circuit board.

[0010] Furthermore, the support columns on the base are divided into two groups. One group of support columns has a buckle structure at the top, and the other group of support columns has a U-shaped elastic clamping structure at the top, which together enable the quick assembly and disassembly of the operation box mounting frame.

[0011] Furthermore, the bottom of the operating box mounting frame is provided with slots corresponding to the support columns with snap-fit ​​structures, and positioning cylinders corresponding to the support columns with U-shaped elastic clamping structures. During assembly, the slots of the operating box mounting frame engage with the snap-fit ​​structures of the support columns, and the positioning cylinders are inserted into the U-shaped elastic clamping structures to complete the clamping and fixing.

[0012] Furthermore, a protrusion is provided on the outer wall of the operating box mounting frame above the positioning cylinder. A corresponding recess is provided in the middle of the support column with a U-shaped elastic clamping structure, and the protrusion slides into the recess. When the slot and the buckle structure disengage, the positioning cylinder rotates along the U-shaped elastic clamping structure, causing the protrusion to slide into the recess for limiting and fixing, keeping the operating box mounting frame in the open state and exposing the lower operating space.

[0013] Furthermore, the receiving cavity of the base is equipped with a positioning and limiting structure. The printed circuit board is fixed and limited by the positioning and limiting structure, restricting the displacement and shaking of the printed circuit board within the receiving cavity. The inner surface of the top plate of the receiving cavity is provided with several integrally formed positioning posts, and the inner surface of the side wall is provided with fixing buckles. The printed circuit board is provided with positioning holes. During assembly, the positioning holes of the printed circuit board are aligned with the positioning posts and placed into the receiving cavity. The positioning posts pass through the positioning holes, and the side of the printed circuit board is locked between the fixing buckles.

[0014] Furthermore, the integrated module also includes a grounding component, which is electrically connected to the grounding terminal of the printed circuit board to achieve reliable grounding of the printed circuit board.

[0015] Furthermore, the operating box integrated module is also equipped with expansion components, which are expansion modules or expansion boards. These expansion modules or boards can be flexibly added or replaced as needed. Mounting supports are provided on the base. The expansion modules or expansion boards are detachably mounted on the mounting supports.

[0016] Secondly, this utility model provides a frequency converter, including a frequency converter body and an operation box integration module as described in any of the above claims, wherein the operation box integration module is detachably installed inside the cavity of the frequency converter body.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution pre-assembles the base, printed circuit board, and control box into an integrated pre-installed module, which can be directly installed into the inverter during the whole machine assembly, greatly reducing the final assembly process and improving production efficiency; when the equipment fails for maintenance, the module can be removed as a whole, making replacement and maintenance operations convenient. 2. Two types of support pillars with different functions are set up to form a double locking structure in conjunction with the operating box mounting frame; the U-shaped elastic clamping structure and buckle work together to limit the position, making the assembly stable and not easy to loosen, and the disassembly and assembly operations are simple and labor-saving; 3. Two operating box installation structures can be flexibly selected: integrated boss and support column combined with mounting frame, which can be adapted to different internal layout requirements of the whole machine, facilitate product serialization and standardization production, and enhance module versatility. 4. Through the sliding limit cooperation of the protrusions and the recesses, the operating box mounting frame can be stably maintained in the open position during maintenance, preventing the mounting frame from falling freely after disengagement. No manual support is required, making it easier to expose the operating space below for maintenance work and improving the convenience of maintenance operations. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is an exploded view of the operation box mounting position as a boss in the operation box integrated module of this utility model; Figure 2 This is a three-dimensional schematic diagram of the base with a boss at the operation box mounting position in the operation box integrated module of this utility model; Figure 3 This is an exploded view of the operation box mounting position as a support column in the operation box integrated module of this utility model; Figure 4 This is a three-dimensional schematic diagram of the bottom of the integrated module of the operation box of this utility model; Figure 5 This is a schematic diagram showing the state of the operating box mounting frame of this utility model when the limit is lifted.

[0019] Reference numerals: Base 1; Printed circuit board 2; Operation box 3; Operation box mounting frame 4; Grounding component 5; Expansion module 6; Groove 7; Elastic claw 8; Through hole 9; Support column 10 (10a is a snap-on support column, 10b is a U-shaped elastic clamping support column); Positioning cylinder 11; Outward snap 12; Positioning boss 13; Positioning post 14; Fixing buckle 15; Expansion plate 16; Protrusion 17; Recess 18. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.

[0021] In the description of this utility model, the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0022] Unless otherwise expressly defined, the terms "installation," "connection," and "fixing" in this utility model should be interpreted broadly: connection forms include fixed connections, detachable connections, and integral molding; connection types cover mechanical connections and electrical connections; and connections can be made directly by assembly or indirectly by means of an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in conjunction with actual scenarios.

[0023] like Figures 1-5 As shown, this utility model provides an integrated operation box module, which includes a base 1, a printed circuit board 2, and an operation box 3. The base 1 is integrally injection molded from insulating plastic and has side walls and a top plate. The side walls and top plate together form an open-bottomed receiving cavity, and the printed circuit board 2 is an integrated printed circuit board arranged inside the receiving cavity. An operation box mounting position is provided on the top of the base 1, and the operation box 3 is installed on the operation box mounting position and electrically connected to the printed circuit board 2. The base 1, the printed circuit board 2, and the operation box 3 are pre-assembled into an integrated pre-installed module, which can be installed as a whole into the equipment cavity, simplifying the assembly process of the entire production line and facilitating the disassembly and assembly of the equipment for later maintenance. The top plate of the base 1 has mounting holes for fasteners to pass through, so that the integrated pre-installed module can be detachably fixed to the equipment cavity by fasteners; or an outward buckle 12 can be provided on the lower edge of the side wall of the base 1, so that the integrated pre-installed module can be quickly disassembled and assembled by the buckle.

[0024] The structure of this utility model will be further described in detail below with reference to preferred embodiments.

[0025] like Figures 1-2 As shown in this embodiment, the operating box mounting position is a boss integrally formed with the base 1. The boss protrudes upward from the top plate of the base 1, and a groove 7 is formed on the top of the boss. The outline of the groove 7 is adapted to the shape of the operating box 3. The operating box 3 is embedded in the groove 7 and is fixed by a mutually cooperating snap-fit ​​structure between the inner wall of the groove 7 and the outer wall of the operating box 3.

[0026] The buckle structure can employ a straight-arm buckle or a U-shaped buckle commonly used in this field, utilizing the buckle's own elastic deformation to achieve detachable locking and fixation. In specific implementation, such as... Figure 2 As shown, elastic claws 8 are respectively provided on opposite sides of the bottom of the groove 7 of the base 1, and corresponding slots are provided on the outer wall of the operation box 3. At the same time, a positioning boss 13 is provided on the lower inner wall of the groove 7, which matches and aligns with the positioning slot on the outer wall of the operation box 3.

[0027] During assembly, the operating box 3 is first inserted into the groove 7 along the positioning boss 13 to complete the pre-positioning. During the insertion process, the elastic claw 8 is compressed and undergoes elastic deformation. The elastic claw 8 springs back to its original position and engages with the slot on the operating box 3. The positioning boss 13 and the elastic claw 8 cooperate to achieve the limiting and fixing of the operating box. When disassembling the operating box 3, pull up the handle on the operating box 3. After the operating box 3 is subjected to force, it drives the elastic claw 8 to open outward, so that the elastic claw 8 disengages from the slot of the operating box 3, releasing the locking limit. Continue to pull the operating box 3 upward, so that it is guided out of the groove 7 along the positioning boss 13, completing the disassembly.

[0028] A through hole 9 is provided at the bottom of the groove 7, which communicates with the receiving cavity of the base 1. The printed circuit board 2 integrates control circuitry, and a connector socket or pin is provided on the side facing the operation box 3. A connector plug or socket is provided at the bottom of the operation box 3 corresponding to the printed circuit board 2. The connector plug or socket at the bottom of the operation box 3 passes downwards through the through hole 9 and directly engages with the connector socket or pin on the printed circuit board 2 inside the receiving cavity, thus achieving electrical connection between the operation box and the printed circuit board. The through hole 9 also serves as a guide and positioning element for the assembly of the operation box 3, ensuring precise connector engagement. Simultaneously, the through hole provides an assembly tolerance clearance to prevent interference between the operation box and the printed circuit board during assembly.

[0029] This utility model also provides another implementation method, namely Embodiment 2. The main difference between this embodiment and Embodiment 1 is that the operation box mounting position adopts a different structural form.

[0030] like Figures 3-4As shown in this second embodiment, the operating box mounting position consists of several support columns 10 mounted on the top plate of the base 1. These support columns 10 are divided into two groups: the top of one group of support columns is equipped with a snap-fit ​​structure, and the top of the other group of support columns is equipped with a U-shaped elastic clamping structure. In this preferred embodiment, the base is provided with a total of four support columns, which are arranged symmetrically on both sides of the top surface of the base in pairs.

[0031] In this embodiment, the operation box integration module also includes a separate operation box mounting frame 4. The bottom of the operation box mounting frame 4 is integrally formed with a slot and a positioning cylinder 11. The slot positions correspond one-to-one with the support column with a buckle structure, and the positioning cylinder 11 positions correspond one-to-one with the support column with a U-shaped elastic clamping structure. The combination of the buckle and U-shaped elastic clamping dual structures solves the problems of easy vibration and loosening of a single buckle and insufficient locking force of a single U-shaped clamp.

[0032] The outer wall of the operating box mounting frame 4 has a protrusion 17 located above the positioning cylinder 11. The support column 10, which has a U-shaped elastic clamping structure, has a recess 18 in the middle. The protrusion 17 and the recess 18 are positioned one-to-one and can slide together.

[0033] When assembling the operating box mounting frame 4, first align the bottom positioning cylinder 11 with the U-shaped elastic clamping structure on the support column 10 and insert it, pressing down to complete the pre-positioning; continue pressing down on the operating box mounting frame 4 so that the bottom slot engages and locks with the buckle structure at the top of the support column 10, thereby fixing the operating box mounting frame 4 above the base 1. After assembly, the U-shaped elastic clamping structure uses its own elasticity to hold the positioning cylinder 11, forming a double locking engagement with the buckle and slot, which not only facilitates the quick assembly and disassembly of the operating box mounting frame 4, but also plays a role in preventing loosening and limiting the position.

[0034] When disassembling the operating box mounting frame 4, first pry upwards the slot to disengage the slot from the top latching structure of the support column 10, thus releasing the axial constraint in the latching direction. After disengaging the latch, two operating methods can be selected according to the actual usage scenario: The first method is a complete disassembly operation: simply lift the operating box mounting frame 4 upwards to disengage the positioning cylinder 11 from the U-shaped elastic clamping structure, and then the operating box mounting frame 4 can be removed as a whole.

[0035] The second type is inspection and maintenance work: such as Figure 5As shown, after the buckle disengages, the positioning cylinder 11 remains inside the U-shaped elastic clamping structure, and the operating box mounting frame 4 rotates around the positioning cylinder 11 as the rotation center. During the rotation, the protrusion 17 rotates synchronously with the operating box mounting frame 4 until the protrusion 17 slides into the recess 18 in the middle of the support column 10 equipped with the U-shaped elastic clamping structure, forming a temporary limiting fit. Relying on the sliding limiting fit between the protrusion 17 and the recess 18, the operating box mounting frame 4 can be maintained in an open position, fully exposing the operating space below the operating box mounting frame 4, facilitating the inspection, disassembly, and maintenance of internal components. After the inspection is completed, the operating box mounting frame 4 can be rotated in the opposite direction to disengage the protrusion 17 from the recess 18, and the buckle can be re-engaged to complete the reassembly; alternatively, the operating box mounting frame 4 can be lifted upwards to completely remove it. This sliding limiting fit between the protrusion and the recess prevents the mounting frame from falling freely after disengagement, maintaining the open inspection position without manual support, thus improving the maintenance operation experience.

[0036] The top of the operating box mounting frame 4 has a groove 7, the shape of which matches the shape of the operating box 3. The operating box 3 is fitted into the groove 7 and fixed by a locking structure that engages between the inner wall of the groove 7 and the outer wall of the operating box 3. The locking structure for fixing the operating box in the groove at the top of the operating box mounting frame 4 in this embodiment is exactly the same as that in Embodiment 1. The specific structure, assembly, and disassembly process are the same as in Embodiment 1 and will not be repeated here.

[0037] A through hole 9 is provided at the bottom of the groove 7 of the operating box mounting frame 4. A through hole is also provided at the corresponding position on the top plate of the base 1. A cable is connected to the electrical connector at the bottom of the operating box 3. The cable passes through the through hole 9 of the operating box mounting frame 4 and the through hole of the top plate of the base 1 in sequence and then extends into the receiving cavity. The two ends of the cable are respectively plugged into and fixed to the corresponding interfaces on the operating box 3 and the printed circuit board 2 to realize the electrical connection between the two.

[0038] Both Embodiment 1 and Embodiment 2 described above can be configured with a printed circuit board limiting and fixing structure and a grounding structure. The following is a further explanation of this part of the structure.

[0039] like Figure 4 As shown, the accommodating cavity of the base 1 is provided with an integrally formed positioning and limiting structure for limiting and fixing the printed circuit board 2. Specifically, the inner surface of the top plate of the accommodating cavity of the base 1 is provided with several integrally formed positioning posts 14, and the inner surface of the side wall is provided with several integrally formed fixing buckles 15. The printed circuit board 2 is provided with positioning holes corresponding to the positions of the positioning posts 14.

[0040] During assembly, the positioning hole of the printed circuit board 2 is aligned with the positioning post 14 and placed into the receiving cavity. The positioning post 14 passes through the positioning hole, and the side of the printed circuit board 2 is locked between the fixing buckles 15. This can limit the horizontal offset and vertical displacement of the printed circuit board, prevent the printed circuit board from shaking after assembly, and ensure the stable connection of the connector.

[0041] like Figure 3 As shown, the operation box integrated module is equipped with a grounding component 5, which is made of metal and its shape is not specifically limited. The grounding component 5 is electrically connected to the grounding terminal on the printed circuit board 2, thereby achieving reliable grounding of the printed circuit board 2. The grounding terminal can be set as a grounding pad or a grounding terminal.

[0042] Based on Embodiment 1 or Embodiment 2, an expansion module or expansion board can be added. The installation method of the expansion component is described below.

[0043] like Figure 1 , Figure 3 As shown, in this embodiment, the operation box integration module also includes an expansion component, which can be an expansion module 6 or an expansion board 16, and can be flexibly selected according to the actual application scenario. The expansion module 6 can be a communication module, an I / O expansion module, or a function expansion module, etc. The expansion board 16 can be an I / O expansion board, a communication expansion board, or other function boards.

[0044] The top surface of the base 1 is equipped with a mounting post. The expansion module 6 or expansion board 16 can be detachably installed on the mounting post using at least one of the following methods: screw fasteners or snap-fit ​​connections. The expansion module 6 or expansion board 16 is electrically connected to the printed circuit board 2, and signal exchange can be achieved through methods such as ribbon cables, connector plug-in, or flexible wire connection. A cable routing hole is provided in the corresponding area of ​​the top plate of the base 1 for the connection cables to pass through. Depending on the actual needs of the entire machine, one or more expansion modules or expansion boards can be selected for installation, each corresponding to different functions, to achieve signal input / output expansion, communication protocol expansion, and other functions.

[0045] This embodiment, by setting up mounting supports, allows for flexible addition and replacement of expansion modules or expansion boards as needed, further enhancing the versatility and scalability of the integrated module. During assembly, an integrated boss is used as the mounting position for the operating box. The expansion board is installed with fasteners, eliminating the need to disassemble the internal structure of the base 1; it can be directly installed and removed from the outside of the base's top plate. Alternatively, an operating box mounting frame is used. By utilizing the sliding cooperation of the protrusion 17 and the recess 18, the operating box mounting frame 4 is lifted, exposing the operating space beneath it, allowing for the installation and removal of the expansion module. Both embodiments eliminate the need to disassemble the internal structure of the base, making assembly and maintenance convenient.

[0046] This utility model also provides a complete frequency converter. The following description of the frequency converter embodiment is based on the above-mentioned operation box integrated module.

[0047] This utility model also provides a frequency converter, which includes a frequency converter body and an operation box integrated module as described in any of the above embodiments. The operation box integrated module, as a complete pre-assembled module, is detachably assembled into the cavity of the frequency converter body via a snap-fit ​​structure or fastener structure. During assembly, simply place the pre-assembled operation box integrated module into the corresponding position and lock it with the snap-fit ​​or tighten the screws to complete the installation. During disassembly, loosen the snap-fit ​​or screws to remove the entire operation box integrated module from the frequency converter body without the need for separate disassembly.

[0048] The above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments. All equivalent changes or modifications made within the scope of the claims should be included within the protection scope of the present utility model.

Claims

1. An integrated control box module, comprising a base, a printed circuit board, and a control box, characterized in that: The base has a side wall and a top plate that together form an open-bottomed receiving cavity, and the printed circuit board is disposed in the receiving cavity; An operating box mounting position is provided above the base; The operation box is installed in the operation box mounting position and is electrically connected to the printed circuit board; The base, printed circuit board, and control box are assembled as an integrated pre-assembled module.

2. The operation box integrated module according to claim 1, characterized in that: The operating box mounting position is a boss integrally formed with the base, and a groove is provided on the top of the boss; the operating box is embedded in the groove, fixed to the groove by a snap-fit ​​structure, and electrically connected to the printed circuit board by plug-in connectors.

3. The operation box integrated module according to claim 1, characterized in that: The operation box mounting position is a support column set on the base; the integrated module also includes an operation box mounting frame, which is snapped onto the support column; the top of the operation box mounting frame is provided with a groove, and the operation box is embedded in the groove and fixed to the groove by a snap-fit ​​structure; the base is provided with a through hole, and the operation box establishes an electrical connection with the printed circuit board through a cable passing through the through hole.

4. The operation box integration module according to claim 2 or 3, characterized in that: The bottom of the groove has a through hole for electrical connection between the operation box and the printed circuit board.

5. The operation box integrated module according to claim 3, characterized in that: The support pillars are divided into two groups. One group of support pillars has a buckle structure at the top, and the other group of support pillars has a U-shaped elastic clamping structure at the top.

6. The operation box integrated module according to claim 5, characterized in that: The bottom of the operating box mounting frame is provided with a slot corresponding to the support column with a buckle structure and a positioning cylinder corresponding to the support column with a U-shaped elastic clamping structure; the slot engages with the buckle structure, and the positioning cylinder is inserted into the U-shaped elastic clamping structure to complete the clamping and fixing.

7. The operation box integrated module according to claim 6, characterized in that: The outer wall of the operation box mounting frame and above the positioning cylinder has a protrusion, and the middle of the support column with the U-shaped elastic clamping structure has a corresponding recess, and the protrusion and the recess slide together.

8. The operation box integrated module according to claim 1, characterized in that: The accommodating cavity of the base is provided with a positioning and limiting structure, and the printed circuit board is fixed and limited by the positioning and limiting structure; The integrated module also includes a grounding component, which is electrically connected to the grounding terminal of the printed circuit board.

9. The operation box integrated module according to claim 1, characterized in that: The integrated module also includes an expansion component, which is an expansion module or an expansion board. The base is provided with a mounting support, and the expansion module or expansion board is detachably mounted on the mounting support.

10. A frequency converter, characterized in that: It includes a frequency converter body and an operation box integration module as described in any one of claims 1 to 9, wherein the operation box integration module is detachably installed inside the cavity of the frequency converter body.

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