Electromagnetic shielding device for a servo motor

Abstract

The utility model relates to servo motor technical field especially is electromagnetic shielding device of a kind of servo motor, including servo motor ontology, shielding subassembly is installed in servo motor ontology inside, shielding subassembly one end is fixed with assembly through bolt connection, the front end fixedly connected with end cover subassembly of servo motor ontology, servo motor ontology includes casing, built-in mounting cylinder is fixedly connected in casing inside, outer groove is established in casing inside, shielding subassembly includes clock spring, clock spring right end fixedly connected with connecting piece, connecting piece is fixed first crimping plate, first conductive rubber body gasket and first metal mesh board shielding layer through first fixed bolt, end cover subassembly includes end cover plate, end cover plate inside is established and is equipped with sealing plate in installation recess, in the utility model, device improves shielding layer security, prevent external damage, it is convenient to replace, reduce maintenance difficulty, ensure motor stable operation, enhance equipment reliability and life.

Description

Technical Field

[0001] This utility model relates to the field of servo motor technology, specifically to an electromagnetic shielding device for a servo motor. Background Technology

[0002] A servo motor is a high-precision motor used to control mechanical motion. It can precisely control parameters such as speed, position, and torque according to input command signals. It is usually composed of a motor body, encoder, and driver, and is widely used in industrial automation, robotics, CNC machine tools and other fields to achieve precise motion control and automated production.

[0003] The housing of a servo motor is usually made of metal and electromagnetic shielding is achieved through grounding. In some designs, a special electromagnetic shielding layer is added inside or outside the motor housing.

[0004] Servo motors operating in high-temperature environments for extended periods are prone to accelerated aging of their shielding layers due to the high temperatures. While installing the shielding layer externally facilitates maintenance and replacement, it also makes it more susceptible to damage from external mechanical impacts, chemical corrosion, and other environmental factors. Therefore, some servo motors incorporate the shielding layer internally to enhance their protective performance. However, this design also presents certain challenges: if the shielding layer needs replacement due to aging or damage, the internal installation location increases operational difficulty and prolongs maintenance time. If the damaged shielding layer is not repaired or replaced in a timely manner, its electromagnetic shielding function will be significantly weakened, leading to increased electromagnetic interference. This not only affects the control accuracy and operational stability of the servo motor but may also further trigger system malfunctions, impacting the normal operation of the equipment. Therefore, an electromagnetic shielding device for servo motors is proposed to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic shielding device for a servo motor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electromagnetic shielding device for a servo motor includes a servo motor body, a shielding component installed inside the servo motor body, one end of the shielding component being bolted to a fixing component, an end cap assembly fixedly connected to the front end of the servo motor body, the servo motor body including a housing, an internal mounting cylinder fixedly connected to the inner side of the housing, an external through groove formed on the inner side of the housing, the shielding component including a spring, a connecting piece fixedly connected to the right end of the spring, the connecting piece being fixedly fastened to a first pressing plate, a first conductive rubber gasket, and a first metal mesh shielding layer by a first fixing bolt, the end cap assembly including an end cap plate, an installation groove formed on the inner side of the end cap plate, a sealing plate fixedly fastened to the installation groove by bolts, a second metal mesh shielding layer fixedly connected to one end of the sealing plate, a mating groove formed on the inner side of the second metal mesh shielding layer, and a rear end of the end cap plate fixedly connected to the front end of the housing.

[0008] As a further optimization of this utility model, the fixing component includes a sealing plate, and a second pressing plate, a second conductive rubber gasket and a conductive rubber ring are fixedly connected to one end of the sealing plate near the first metal mesh shielding layer. A second fixing bolt is spirally installed on the inner side of the second pressing plate.

[0009] As a further optimization of this utility model, the following features are provided: an installation hole is provided on the inner side of the first metal mesh shielding layer; the first metal mesh shielding layer is fixed to the second pressing plate by a second fixing bolt; and the first metal mesh shielding layer is in close contact with the second conductive rubber gasket.

[0010] As a further optimization of this utility model, the number of the sealing plate and the conductive rubber ring are both two, the two sealing plates are tightly attached to each other, and the two conductive rubber rings are tightly attached to each other.

[0011] As a further optimization of this utility model, there is a space between the outer side of the built-in mounting cylinder and the inner side of the housing, and a spring is embedded in the space between the built-in mounting cylinder and the housing.

[0012] As a further optimization of this utility model, the inner side of the spring is fixedly connected to the outer side of the built-in mounting cylinder, the right end of the connecting piece is provided with a mounting hole, and the upper and lower ends of the connecting piece are both in contact with the first conductive rubber gasket.

[0013] As a further optimization of this utility model, the mounting groove extends vertically through the interior of the end cover plate, the mating groove fits snugly against the end cover plate, and there are two sealing plates that fit snugly against each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, by setting up shielding components, fixing components, and end cap components, the device places the electromagnetic shielding layer inside the servo motor, which improves the safety of the shielding layer and effectively prevents damage to the shielding layer by external environmental factors. At the same time, this design allows the shielding layer to be replaced without disassembling the motor, which greatly reduces the difficulty and time cost of maintenance, ensures the integrity and stable operation of the servo motor, and enhances the overall reliability and service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the end cap assembly structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the servo motor body of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the end cap assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the shielding component structure of this utility model;

[0021] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point A;

[0022] Figure 7 This is a schematic diagram of the flipping structure of the fixing component of this utility model;

[0023] Figure 8 This utility model Figure 7 A schematic diagram of the structure at point B.

[0024] In the diagram: 1. Servo motor body; 11. Housing; 12. Internal mounting cylinder; 13. External through slot;

[0025] 2. Shielding assembly; 21. Clock spring; 22. Connecting piece; 23. First pressing plate; 24. First conductive rubber gasket; 25. First fixing bolt; 26. First metal mesh shielding layer;

[0026] 3. Fixing component; 31. Sealing plate; 32. Second pressing plate; 33. Second conductive rubber gasket; 34. Conductive rubber ring; 35. Second fixing bolt;

[0027] 4. End cap assembly; 41. End cap plate; 42. Mounting groove; 43. Second metal mesh shielding layer; 44. Sealing plate; 45. Mating groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[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] Please see Figures 1-8 This utility model provides a technical solution:

[0031] An electromagnetic shielding device for a servo motor includes a servo motor body 1, a shielding component 2 installed inside the servo motor body 1, a fixing component 3 connected to one end of the shielding component 2 by bolts, an end cap component 4 fixedly connected to the front end of the servo motor body 1, the servo motor body 1 including a housing 11, an internal mounting cylinder 12 fixedly connected to the inside of the housing 11, an external through groove 13 opened on the inside of the housing 11, the shielding component 2 including a spring 21, a connecting piece 22 fixedly connected to the right end of the spring 21, the connecting piece 22 fixing a first pressing plate 23, a first conductive rubber gasket 24 and a first metal mesh shielding layer 26 by a first fixing bolt 25, the end cap component 4 including an end cap plate 41, an installation groove 42 opened on the inside of the end cap plate 41, a sealing plate 44 fixed to the installation groove 42 by bolts, a second metal mesh shielding layer 43 fixedly connected to one end of the sealing plate 44, a mating groove 45 opened on the inside of the second metal mesh shielding layer 43, and the rear end of the end cap plate 41 fixedly connected to the front end of the housing 11.

[0032] As a further implementation of this solution, the fixing component 3 includes a sealing plate 31. The end of the sealing plate 31 near the first metal mesh shielding layer 26 is fixedly connected to a second pressing plate 32, a second conductive rubber gasket 33, and a conductive rubber ring 34. A second fixing bolt 35 is spirally installed on the inner side of the second pressing plate 32. Through the above settings, the stability and sealing of the structure are enhanced, the connection is improved, and the first metal mesh shielding layer 26 can be pulled out through the fixing component 3.

[0033] As a further implementation of this solution, the first metal mesh shielding layer 26 has mounting holes on its inner side. The first metal mesh shielding layer 26 is fixed to the second pressing plate 32 by the second fixing bolt 35. The first metal mesh shielding layer 26 is tightly attached to the second conductive rubber gasket 33. Through the above arrangement, not only is a tight connection between the first metal mesh shielding layer 26 and the second pressing plate 32 achieved, but the tight attachment between the first metal mesh shielding layer 26 and the second conductive rubber gasket 33 further enhances the overall structure.

[0034] As a further implementation of this solution, there are two sealing plates 31 and two conductive rubber rings 34. The two sealing plates 31 are tightly attached to each other, and the two conductive rubber rings 34 are tightly attached to each other. Through the above arrangement, this symmetrical design not only enhances the symmetry and stability of the structure, but also improves the overall strength of the device. This design helps to distribute stress evenly, reduce damage caused by local stress concentration, and thus extend the service life of the device.

[0035] As a further implementation of this solution, there is a space between the outer side of the built-in mounting cylinder 12 and the inner side of the housing 11. A spring 21 is embedded in the space between the built-in mounting cylinder 12 and the housing 11. The inner side of the spring 21 is fixedly connected to the outer side of the built-in mounting cylinder 12. A mounting hole is opened at the right end of the connecting piece 22. The upper and lower ends of the connecting piece 22 are both in contact with the first conductive rubber gasket 24. Through the above settings, this design not only improves the flexibility of the device, but also enhances its ability to adapt to different working conditions. At the same time, it helps to improve the accuracy and reliability of the device during operation, and also helps to improve the electromagnetic shielding effect.

[0036] As a further implementation of this solution, the mounting groove 42 extends vertically through the interior of the end cover plate 41, and the mating groove 45 fits snugly against the end cover plate 41. There are two sealing plates 44, which fit snugly against each other. With the above settings, one end of the end cover of the servo motor can be shielded, improving the electromagnetic shielding effect and safety of the servo motor.

[0037] Workflow: When replacing the first metal mesh shielding layer 26 and the second metal mesh shielding layer 43, the fixing assembly 3 is fixed to the first metal mesh shielding layer 26 beforehand, the conductive rubber ring 34 is attached to the right side of the housing 11, and the two sealing plates 31 are located on the right side of the housing 11. Pulling the sealing plate 31 causes the first metal mesh shielding layer 26 to extend to the right through the second pressing plate 32 and the second conductive rubber gasket 33. The first metal mesh shielding layer 26 causes the connecting piece 22 to move to the right through the first pressing plate 23 and the first conductive rubber gasket 24. The connecting piece 22 pulls on the spring 21, causing the spring 21 to deform. When the connecting piece 22 protrudes from the outside of the housing 11, it is clamped by the existing book clip. The volume of the book clip is larger than the opening size of the outer through slot 13. At this time, the first pressing plate 23 can be fixed to the outside of the housing 11. Then, the multiple second fixing bolts 35 and the multiple first fixing bolts 25 are removed, and the fixing assembly 3 is separated from the first metal mesh shielding layer 26. Then, the first pressing plate 23 and the first conductive rubber gasket 24 are separated from the first metal mesh shielding layer 26. The first metal mesh shielding layer 26 is replaced. After replacement, the book clip is removed. Under the elastic recoil action of the spring 21, the first metal mesh shielding layer 26 is rolled up into the space between the housing 11 and the internal mounting cylinder 12. Then, the bolts fixing the sealing plate 44 and the end cover plate 41 are removed, separating the sealing plate 44 and the end cover plate 41. Thus, the second metal mesh shielding layer 43 can be taken out from the mounting groove 42. The intact second metal mesh shielding layer 43 is then installed into the mounting groove 42, mating with the groove 45 and the end cover plate. The inner cylinder of 41 is tightly attached, and the sealing plate 44 is then fixed between the end cover plate 41 to complete the replacement. When electromagnetically shielding the housing 11, the first metal mesh shielding layer 26 provides electromagnetic shielding to the body of the housing 11, and the second metal mesh shielding layer 43 provides shielding to the end cover of the end cover plate 41. Based on the above principles, the device places the electromagnetic shielding layer inside the housing, thereby improving the safety of the electromagnetic shielding layer. At the same time, this setting allows the shielding layer to be replaced without disassembling the servo motor, improving the integrity and safe operation of the servo motor.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic shielding device for a servo motor, comprising a servo motor body (1), characterized in that: A shielding component (2) is installed inside the servo motor body (1). One end of the shielding component (2) is connected to a fixing component (3) by bolts. An end cap component (4) is fixedly connected to the front end of the servo motor body (1). The servo motor body (1) includes a housing (11), an internal mounting cylinder (12) is fixedly connected to the inner side of the housing (11), and an external through groove (13) is opened on the inner side of the housing (11). The shielding assembly (2) includes a spring (21), and a connecting piece (22) is fixedly connected to the right end of the spring (21). The connecting piece (22) is fixed to the first pressing plate (23), the first conductive rubber gasket (24) and the first metal mesh shielding layer (26) by the first fixing bolt (25). The end cap assembly (4) includes an end cap plate (41), an installation groove (42) is provided on the inner side of the end cap plate (41), a sealing plate (44) is fixed to the installation groove (42) by bolts, a second metal mesh shielding layer (43) is fixedly connected to one end of the sealing plate (44), and a mating groove (45) is provided on the inner side of the second metal mesh shielding layer (43). The rear end of the end cover plate (41) is fixedly connected to the front end of the housing (11).

2. The electromagnetic shielding device for a servo motor according to claim 1, characterized in that: The fixing component (3) includes a sealing plate (31), and a second pressing plate (32), a second conductive rubber gasket (33) and a conductive rubber ring (34) are fixedly connected to one end of the sealing plate (31) near the first metal mesh shielding layer (26). A second fixing bolt (35) is spirally installed on the inner side of the second pressing plate (32).

3. The electromagnetic shielding device for a servo motor according to claim 1, characterized in that: The first metal mesh shielding layer (26) has an installation hole on its inner side. The first metal mesh shielding layer (26) is fixed to the second pressing plate (32) by the second fixing bolt (35). The first metal mesh shielding layer (26) is in close contact with the second conductive rubber gasket (33).

4. The electromagnetic shielding device for a servo motor according to claim 2, characterized in that: The number of the sealing plate (31) and the conductive rubber ring (34) are both two, with the two sealing plates (31) and the two conductive rubber rings (34) being tightly attached to each other.

5. The electromagnetic shielding device for a servo motor according to claim 1, characterized in that: There is a space between the outer side of the built-in mounting cylinder (12) and the inner side of the housing (11), and a spring spring (21) is embedded in the space between the built-in mounting cylinder (12) and the housing (11).

6. The electromagnetic shielding device for a servo motor according to claim 1, characterized in that: The inner side of the spring (21) is fixedly connected to the outer side of the built-in mounting cylinder (12), and the right end of the connecting piece (22) has a mounting hole. The upper and lower ends of the connecting piece (22) are both in contact with the first conductive rubber gasket (24).

7. The electromagnetic shielding device for a servo motor according to claim 1, characterized in that: The mounting groove (42) extends vertically through the interior of the end cover plate (41), the mating groove (45) fits against the end cover plate (41), and there are two sealing plates (44), which fit against each other.

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