Filtering shielding structure of motor controller

Abstract

The utility model relates to the field of filtering shielding structures, and discloses a filtering shielding structure of a motor controller, which comprises a first shielding box, a box cover hinged to one side of the top of the first shielding box, first fixing mechanisms arranged at two ends of one side of the first shielding box and used for fixing the box cover, and a sealing mechanism arranged at the bottom of the box cover and used for sealing. A second shielding box is fixed to the bottom in the first shielding box, shielding sponge is fixed to the inner side wall of the first shielding box and located between the first shielding box and the second shielding box, a controller body is arranged in the second shielding box, and a second fixing mechanism used for fixing the controller body is arranged on the inner side wall of the second shielding box. The top of the second shielding box is provided with an electrostatic shielding sealing cover. According to the utility model, through the second fixing mechanism and the two first fixing mechanisms, the installation, fixation and reverse operation of the controller body can be rapidly completed, the controller body can be rapidly disassembled, the operation is simple, and the use flexibility and convenience are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of filter shielding structure technology, and in particular to a filter shielding structure for a motor controller. Background Technology

[0002] Filtering in motor controllers mainly refers to processing input and control signals to reduce noise and interference, ensuring stable operation and precise control of the motor. With the continuous development of motor drive technology, motor controllers are increasingly widely used in industrial automation, home appliances, electric vehicles, and other fields. The main function of a motor controller is to monitor and control the operation of the motor to achieve efficient and precise drive. However, in practical applications, motor controllers face various electromagnetic interference and noise problems, which may lead to reduced control accuracy, system instability, or even damage to the motor and controller itself. Therefore, a filtering and shielding structure for motor controllers is needed.

[0003] Traditional motor controllers typically use bolts and nuts for fixing, which requires disassembling and reassembling multiple bolts and nuts during maintenance or replacement. This makes quick disassembly and installation difficult and reduces maintenance convenience. Furthermore, traditional motor controllers lack effective wiring harness fixing mechanisms, leading to messy wiring harnesses during use and increasing the risk of electrical short circuits and interference. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a filtering and shielding structure for a motor controller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A filtering and shielding structure for a motor controller includes a first shielding box. A cover is hinged to one side of the top of the first shielding box. First fixing mechanisms for securing the cover are provided at both ends of one side of the first shielding box. A sealing mechanism for sealing is provided at the bottom of the cover. A second shielding box is fixed to the bottom inside the first shielding box. Shielding sponge is fixed to the inner sidewall of the first shielding box, with the shielding sponge located between the first and second shielding boxes. A controller body is disposed inside the second shielding box. A second fixing mechanism for securing the controller body is provided on the inner sidewall of the second shielding box. An electrostatic shielding cover is provided at the top of the second shielding box. A connecting mechanism for connecting the electrostatic shielding cover is provided at the bottom of the cover. A third fixing mechanism for securing a wire harness is provided between one end of the first and second shielding boxes. During use, the controller body can be quickly installed and fixed using the second fixing mechanism and the two first fixing mechanisms. Conversely, the controller body can be quickly disassembled. The operation is simple, enhancing the flexibility and convenience of use.

[0007] As a further embodiment of this utility model, the second fixing mechanism includes four compression plates, each of which is disposed on one of the four inner sidewalls of the second shielding box. Each of the four compression plates has a sliding rod fixed to both ends of its outer sidewall, and all eight sliding rods pass through the outer sidewall of the second shielding box. Each of the eight sliding rods has a second spring sleeved on its sidewall. The eight second springs are grouped in pairs, with each group located between one of the compression plates and the second shielding box. By moving the four compression plates closer to the perimeter of the second shielding box, all eight second springs are compressed. The controller body is then placed inside the second shielding box, positioned between the four compression plates. Releasing the four compression plates causes them to move closer together in pairs, making tight contact with the perimeter of the controller body, thus securing the controller body.

[0008] As a further embodiment of this utility model, the connecting mechanism includes four connecting rods, all of which are fixed to the top of the box cover, and one end of each of the four connecting rods penetrates the bottom of the electrostatic shielding cover. Each of the four connecting rods has an anti-detachment cap fixed to its bottom end. Each of the four connecting rods has a first spring sleeved on its side wall, and the four first springs are located between the box cover and the electrostatic shielding cover. Multiple wire harnesses on the controller body pass through multiple through holes and multiple rubber rings and exit outside the first shielding box, preventing the wire harnesses from becoming tangled during use and reducing the risk of electrical short circuits and interference.

[0009] As a further embodiment of this utility model, the third fixing mechanism includes multiple rubber rings. Multiple interconnected through holes are respectively opened at adjacent ends of the first and second shielding boxes. The multiple rubber rings and through holes correspond one-to-one. The sealing mechanism includes a rectangular frame fixed to the bottom of the box cover. A sealing ring is fitted onto the outer wall of the rectangular frame. The first fixing mechanism includes a U-shaped frame fixed to one end of the outer wall of the first shielding box. An L-shaped connecting plate is rotatably connected to the inner wall of the U-shaped frame. A groove is opened at the top of the L-shaped connecting plate. A rectangular block is provided on the inner wall of the groove. A pull rod is fixed to the top of the rectangular block, and one end of the pull rod passes through the top of the L-shaped connecting plate. A third spring is fitted onto the side wall of the pull rod. The first shielding box is fixed to one end of a rectangular block and the other end of a third spring is fixed to an L-shaped connecting plate. A rectangular hole is provided on one side of the top of the box cover, and the rectangular hole and the rectangular block are adapted to each other. The box cover is flipped so that the box cover and the top of the first shielding box are in contact. At this time, the rectangular frame enters the interior of the first shielding box, and the sealing ring is tightly fitted to the inner wall of the first shielding box, sealing the gap between the first shielding box and the box cover. The two L-shaped connecting plates are rotated, and at the same time, the two pull rods are pulled upward, so that the two rectangular blocks enter the two grooves respectively, so that the two third springs are in a compressed state. When the top of the two L-shaped connecting plates and the box cover are tightly fitted, the two pull rods are released. Under the reaction of the two third springs, the two rectangular blocks enter the two rectangular holes respectively, completing the fixation of the first shielding box and the box cover.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. During use, the controller body can be quickly installed and fixed by the second fixing mechanism and two first fixing mechanisms. The controller body can be quickly disassembled by reversing the operation. The operation is simple and enhances the flexibility and convenience of use.

[0012] 2. Through the design of electrostatic shielding cover, shielding sponge and sealing mechanism, a good seal between the first shielding box and the second shielding box is ensured, which improves the overall shielding effect.

[0013] 3. Multiple wire harnesses are secured by a third fixing mechanism, which avoids wire harness tangling during use, thereby reducing the risk of electrical short circuits and interference. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the filtering and shielding structure of a motor controller proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the unfolded first shielding box and box cover of a filter shielding structure for a motor controller proposed in this utility model;

[0016] Figure 3 An exploded view of the cover and electrostatic shielding cover of the filter shielding structure of the motor controller proposed in this utility model;

[0017] Figure 4 An exploded view of the cover, electrostatic shielding cover, rectangular frame, and sealing ring of a filter shielding structure for a motor controller proposed in this utility model;

[0018] Figure 5 This is a schematic diagram of the filtering and shielding structure of a motor controller proposed in this utility model;

[0019] Figure 6 An exploded view of the first and second shielding boxes of a filter shielding structure for a motor controller proposed in this utility model;

[0020] Figure 7 This is a schematic diagram of the second fixing mechanism of the filter shielding structure of a motor controller proposed in this utility model.

[0021] In the diagram: 1. First shielding box; 2. Box cover; 3. U-shaped frame; 4. L-shaped connecting plate; 5. Pull rod; 6. Through hole; 7. Rectangular hole; 8. Electrostatic shielding cover; 9. Connecting rod; 10. First spring; 11. Rectangular frame; 12. Sealing ring; 13. Anti-detachment cap; 14. Shielding sponge; 15. Second shielding box; 16. Rubber ring; 17. Controller body; 18. Extrusion plate; 19. Slide rod; 20. Second spring; 21. Groove; 22. Rectangular block; 23. Third spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1 - Figure 7A filtering and shielding structure for a motor controller includes a first shielding box 1, a cover 2 hinged to one side of the top of the first shielding box 1, first fixing mechanisms for fixing the cover 2 at both ends of one side of the first shielding box 1, a sealing mechanism for sealing at the bottom of the cover 2, a second shielding box 15 fixed inside the bottom of the first shielding box 1, a shielding sponge 14 fixed to the inner side wall of the first shielding box 1, and the shielding sponge 14 located between the first shielding box 1 and the second shielding box 15, a controller body 17 disposed inside the second shielding box 15, a second fixing mechanism for fixing the controller body 17 on the inner side wall of the second shielding box 15, an electrostatic shielding cover 8 disposed at the top of the second shielding box 15, a connecting mechanism for connecting the electrostatic shielding cover 8 at the bottom of the cover 2, and a third fixing mechanism for fixing a wire harness disposed between one end of the first shielding box 1 and the second shielding box 15. During use, the controller body 17 can be quickly installed and fixed using the second fixing mechanism and the two first fixing mechanisms; conversely, the controller body 17 can be quickly disassembled. The operation is simple, enhancing the flexibility and convenience of use.

[0024] Reference Figure 2 and Figure 6 In a preferred embodiment, the second fixing mechanism includes four compression plates 18, which are disposed on the four inner side walls of the second shielding box 15. Each of the four compression plates 18 has a sliding rod 19 fixed at both ends of its outer side wall, and all eight sliding rods 19 pass through the outer side wall of the second shielding box 15. Each of the eight sliding rods 19 has a second spring 20 sleeved on its side wall. The eight second springs 20 are grouped in pairs, with each group located between one of the compression plates 18 and the second shielding box 15. By moving the four compression plates 18 closer to the periphery of the second shielding box 15, all eight second springs 20 are compressed. The controller body 17 is placed inside the second shielding box 15, positioned between the four compression plates 18. Releasing the four compression plates 18 causes them to move closer together in pairs, making tight contact with the periphery of the controller body 17, thus fixing the controller body 17.

[0025] Reference Figure 2 - Figure 4 In a preferred embodiment, the connection mechanism includes four connecting rods 9, all of which are fixed to the top of the box cover 2, and one end of each of the four connecting rods 9 passes through the bottom of the electrostatic shielding cover 8. Each of the four connecting rods 9 has an anti-detachment cap 13 fixed to its bottom end. Each of the four connecting rods 9 has a first spring 10 sleeved on its side wall, and the four first springs 10 are located between the box cover 2 and the electrostatic shielding cover 8. This allows multiple wire harnesses on the controller body 17 to pass through multiple through holes 6 and multiple rubber rings 16 and exit outside the first shielding box 1, preventing the wire harnesses from becoming tangled during use and reducing the risk of electrical short circuits and interference.

[0026] Reference Figure 2 - Figure 7 In a preferred embodiment, the third fixing mechanism includes multiple rubber rings 16. Multiple interconnected through holes 6 are respectively opened at adjacent ends of the first shielding box 1 and the second shielding box 15. The multiple rubber rings 16 and the multiple through holes 6 correspond one-to-one. The sealing mechanism includes a rectangular frame 11, which is fixed to the bottom of the box cover 2. A sealing ring 12 is fitted onto the outer wall of the rectangular frame 11. The first fixing mechanism includes a U-shaped frame 3, which is fixed to one end of the outer wall of the first shielding box 1. An L-shaped connecting plate 4 is rotatably connected to the inner wall of the U-shaped frame 3. A groove 21 is opened at the top of the L-shaped connecting plate 4. A rectangular block 22 is provided on the inner wall of the groove 21. A pull rod 5 is fixed to the top of the rectangular block 22, and one end of the pull rod 5 passes through the top of the L-shaped connecting plate 4. A third spring 23 is fitted onto the side wall of the pull rod 5, and one end of the third spring 23 is fixed to the rectangular block 22. The other end of the spring 23 is fixed to the L-shaped connecting plate 4. A rectangular hole 7 is opened on one side of the top of the cover 2, and the rectangular hole 7 and the rectangular block 22 are adapted to each other. The cover 2 is flipped so that the cover 2 and the top of the first shielding box 1 are attached. At this time, the rectangular frame 11 enters the interior of the first shielding box 1, and the sealing ring 12 is tightly attached to the inner wall of the first shielding box 1 to seal the gap between the first shielding box 1 and the cover 2. The two L-shaped connecting plates 4 are rotated. While rotating, the two pull rods 5 are pulled upward so that the two rectangular blocks 22 enter the two grooves 21 respectively, so that the two third springs 23 are in a compressed state. When the top of the two L-shaped connecting plates 4 and the cover 2 are tightly attached, the two pull rods 5 are released. Under the reaction of the two third springs 23, the two rectangular blocks 22 enter the two rectangular holes 7 respectively, thus completing the fixation of the first shielding box 1 and the cover 2.

[0027] The working principle of this embodiment is as follows: During use, the shielding sponge 14 is first embedded between the first shielding box 1 and the second shielding box 15. The four compression plates 18 are moved closer to the perimeter of the second shielding box 15. At this time, all eight second springs 20 are compressed. The controller body 17 is placed inside the second shielding box 15, positioned between the four compression plates 18. The four compression plates 18 are released, and under the reaction force of the eight compressed states, they are pushed closer together, making tight contact with the perimeter of the controller body 17, thus fixing the controller body 17. The operation is simple. After fixing, the multiple wire harnesses on the controller body 17 are passed through multiple through holes 6 and multiple rubber rings 16 and out of the first shielding box 1 to prevent the wire harnesses from becoming tangled during use, reducing the risk of electrical short circuits and interference. The box cover 2 is flipped over so that it fits snugly against the top of the first shielding box 1. At this time, the rectangular frame 11 enters the first... Inside the shielding box 1, the sealing ring 12 fits tightly against the inner wall of the first shielding box 1, sealing the gap between the first shielding box 1 and the box cover 2. Rotating the two L-shaped connecting plates 4 simultaneously pulls the two levers 5 upwards, causing the two rectangular blocks 22 to enter the two grooves 21 respectively, compressing the two third springs 23. When the tops of the two L-shaped connecting plates 4 and the box cover 2 are tightly fitted, the two levers 5 are released. Under the reaction force of the two third springs 23, the two rectangular blocks 22 enter the two rectangular holes 7 respectively, completing the fixation of the first shielding box 1 and the box cover 2. At this time, the electrostatic shielding cover 8 covers the top of the second shielding box 15, and the four first springs 10 are compressed. Under the reaction force of the four compressed states, the electrostatic shielding cover 8 and the second shielding box 15 fit tightly together, completing the seal of the second shielding box 15 and further improving the shielding effect. Reversing the operation allows for the rapid disassembly of the controller body 17.

[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filtering and shielding structure for a motor controller, comprising a first shielding box (1), characterized in that, The first shielding box (1) has a cover (2) hinged to one side of its top. The first shielding box (1) has a first fixing mechanism for fixing the cover (2) at both ends of one side. The cover (2) has a sealing mechanism for sealing at its bottom. The first shielding box (1) has a second shielding box (15) fixed to its bottom. The first shielding box (1) has a shielding sponge (14) fixed to its inner sidewall. The shielding sponge (14) is located between the first shielding box (1) and the second shielding box (15). The second shielding box (15) has a controller body (17) inside. The second shielding box (15) has a second fixing mechanism for fixing the controller body (17) on its inner sidewall. The second shielding box (15) has an electrostatic shielding cover (8) at its top. The cover (2) has a connecting mechanism for connecting the electrostatic shielding cover (8) at its bottom. The first shielding box (1) and the second shielding box (15) have a third fixing mechanism for fixing the wire harness at one end.

2. The filtering and shielding structure of the motor controller according to claim 1, characterized in that, The second fixing mechanism includes four extrusion plates (18), which are all disposed on the four inner side walls of the second shielding box (15). Each of the four extrusion plates (18) has a sliding rod (19) fixed at both ends of its outer side wall, and all eight sliding rods (19) pass through the outer side wall of the second shielding box (15). Each of the eight sliding rods (19) has a second spring (20) sleeved on its side wall. The eight second springs (20) are arranged in pairs, and each pair of second springs (20) is located between one of the extrusion plates (18) and the second shielding box (15).

3. The filtering and shielding structure of the motor controller according to claim 1, characterized in that, The connecting mechanism includes four connecting rods (9), all four connecting rods (9) are fixed inside the top of the box cover (2), and one end of each of the four connecting rods (9) passes through the bottom of the electrostatic shielding cover (8). Each of the four connecting rods (9) has an anti-detachment cap (13) fixed at its bottom end. Each of the four connecting rods (9) has a first spring (10) sleeved on its side wall, and each of the four first springs (10) is located between the box cover (2) and the electrostatic shielding cover (8).

4. The filtering and shielding structure of the motor controller according to claim 1, characterized in that, The third fixing mechanism includes multiple rubber rings (16), and multiple through holes (6) that are interconnected are respectively opened at the adjacent ends of the first shielding box (1) and the second shielding box (15). The multiple rubber rings (16) and the multiple through holes (6) correspond one-to-one.

5. The filtering and shielding structure of the motor controller according to claim 1, characterized in that, The sealing mechanism includes a rectangular frame (11), which is fixed to the bottom of the box cover (2), and a sealing ring (12) is fitted on the outer wall of the rectangular frame (11).

6. The filtering and shielding structure of the motor controller according to claim 1, characterized in that, The first fixing mechanism includes a U-shaped frame (3), which is fixed to one end of the outer wall of the first shielding box (1). An L-shaped connecting plate (4) is rotatably connected to the inner wall of the U-shaped frame (3). A groove (21) is provided at the top of the L-shaped connecting plate (4). A rectangular block (22) is provided on the inner wall of the groove (21). A pull rod (5) is fixed at the top of the rectangular block (22). One end of the pull rod (5) passes through the top of the L-shaped connecting plate (4). A third spring (23) is sleeved on the side wall of the pull rod (5). One end of the third spring (23) is fixed to the rectangular block (22). The other end of the third spring (23) is fixed to the L-shaped connecting plate (4). A rectangular hole (7) is provided on one side of the top of the box cover (2). The rectangular hole (7) and the rectangular block (22) are compatible.

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