Anti-interference motor protector

Abstract

The utility model relates to the technical field of anti-interference of motor protectors, and provides an anti-interference motor protector, which comprises a protector body, an electromagnetic protective cover, a fixing seat and a mounting mechanism, the electromagnetic protective cover is fixedly arranged on the outer wall of the protector body, the electromagnetic protective cover is provided with a wiring terminal, and the fixing seat is fixedly arranged on the outer wall of the protector body. The wiring terminal is electrically connected with the protector body, the fixing seat is arranged on one side of the electromagnetic protective cover, a fixing groove is formed in the side wall of the fixing seat, one end of the electromagnetic protective cover extends into the fixing groove, and the mounting mechanism is arranged between the fixing seat and the electromagnetic protective cover and used for mounting and fixing the fixing seat and the electromagnetic protective cover. According to the technical scheme, the electromagnetic protection cover is used for solving the technical problem that in the prior art, the working effect is easily affected by electromagnetic coupling in the installation state of a protector.

Description

An anti-interference motor protector Technical Field

[0001] This utility model relates to the field of anti-interference technology for motor protectors, specifically, to an anti-interference motor protector. Background Technology

[0002] With the rapid development of industrial automation and smart grids, electric motors, as core power equipment, are widely used in various fields. Motor protectors have also become key devices to ensure their safe and stable operation. They can monitor the operating status of the motor in real time and take timely protective measures, such as cutting off the power supply and issuing alarm signals, when the motor has faults such as overload, short circuit, undervoltage, overvoltage, phase loss, leakage, and overheating, so as to avoid damage to the motor due to faults. At the same time, they can also ensure the safety of personnel and the normal operation of production equipment.

[0003] In existing technologies, motor protectors are often installed by directly fixing them with bolts or by mounting them on guide rails. However, in environments with strong electromagnetic interference, such as industrial production workshops with numerous frequency converters and welding machines, electromagnetic coupling can easily occur between the protector and the mounting plate or guide rail. This can cause external electromagnetic interference signals to be transmitted to the protector's internal circuitry through the mounting structure, leading to increased signal acquisition errors. This, in turn, affects the protector's accurate judgment of the motor's operating status, resulting in malfunctions or missed actions, ultimately impacting the protector's performance. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides an anti-interference motor protector to solve the technical problem that the working effect of the protector is easily affected by electromagnetic coupling when it is installed.

[0005] According to one aspect, at least one embodiment of the present invention provides an anti-interference motor protector, including a protector body, an electromagnetic shield, a mounting base, and an installation mechanism. The electromagnetic shield is fixedly disposed on the outer wall of the protector body, and a wiring terminal is provided on the electromagnetic shield. The wiring terminal is electrically connected to the protector body. The mounting base is disposed on one side of the electromagnetic shield, and a fixing groove is provided on the side wall of the mounting base. One end of the electromagnetic shield extends into the fixing groove. The installation mechanism is disposed between the mounting base and the electromagnetic shield for installing and fixing the mounting base and the electromagnetic shield.

[0006] Preferably, the installation mechanism includes a first cavity, a positioning seat, a positioning block, a relative movement mechanism, and a stabilizing mechanism. The first cavity is formed on both sides of the fixed seat and communicates with the fixed groove. The positioning seat is slidably disposed within the first cavity. A positioning groove is formed on the side wall of the positioning seat near the electromagnetic shield. Positioning blocks are fixedly disposed on the two opposite side walls of the electromagnetic shield, and the positioning blocks are aligned with the positioning grooves. The side walls of the positioning blocks are provided with an anti-electromagnetic coating. The shape of the positioning blocks is adapted to the shape of the positioning grooves. The relative movement mechanism is disposed between the fixed seat and the positioning seat to drive the two positioning seats to move relative to each other. The stabilizing mechanism is disposed on the positioning seat to stabilize the positioning block within the positioning groove.

[0007] Furthermore, the relative movement mechanism includes a bidirectional screw and a first handwheel. The bidirectional screw is rotatably disposed between two opposite side walls of the two first cavities. The bidirectional screw passes through the two positioning seats through a threaded connection. The first handwheel is rotatably disposed on the side wall of the fixed seat and is fixedly connected to the bidirectional screw.

[0008] Furthermore, the stabilizing mechanism includes a limiting groove, a threaded rod, and a synchronous rotation mechanism. The limiting groove is formed on the side wall of the positioning groove, and an L-shaped limiting block is slidably disposed in the limiting groove. The threaded rod is rotatably disposed on the side wall of the limiting groove and extends into the limiting block through threaded engagement. The rotation mechanism is disposed in the positioning seat and is used to drive the two threaded rods to rotate synchronously.

[0009] Furthermore, the synchronous rotation mechanism includes a second cavity, a second bevel gear, a drive port, and a drive mechanism. The positioning seat has a second cavity on one side of the limiting groove. A first bevel gear is rotatably mounted on the inner top wall of the second cavity. The first bevel gear is fixedly connected to the threaded rod. The second bevel gear is rotatably mounted on the side wall of the second cavity and meshes with the first bevel gear. The drive port is located on the positioning seat, and the drive mechanism is located on the positioning seat for driving the two second bevel gears to rotate synchronously.

[0010] Based on the above scheme, the driving mechanism includes a driving prism and a second handwheel. The driving prism is rotatably disposed between two opposite side walls of the two first cavities. The driving prism passes through the driving port, and the driving prism passes through the second bevel gear and is slidably connected to the second bevel gear. The second handwheel is rotatably disposed on the side wall of the fixed seat and is fixedly connected to the driving prism.

[0011] Based on the above scheme, a mounting plate is fixedly installed on the side wall of the fixing base, and multiple fixing bolts are installed through the mounting plate.

[0012] Based on the above scheme, the side wall of the electromagnetic shield is provided with heat dissipation vents.

[0013] The beneficial effects of the embodiments of this utility model are as follows:

[0014] 1. In this utility model, by setting up an electromagnetic shield and a positioning block, the electromagnetic shield can provide electromagnetic protection for the protector body, thereby avoiding the impact of electromagnetic coupling on the working effect of the protector body.

[0015] 2. In this utility model, by setting up the installation mechanism, the rotation of the first handwheel can drive the bidirectional screw to rotate, and at the same time, the threaded engagement between the bidirectional screw and the positioning seat can drive the two positioning seats to move relative to each other, thereby allowing the positioning block to extend into the positioning groove to fix the positioning block and the electromagnetic protective cover.

[0016] 3. In this utility model, by setting up a stabilizing mechanism, the limit block can be moved by rotating the second handwheel, thereby pressing the positioning block against the side wall of the positioning groove by the movement of the limit block, which facilitates the improvement of the fixing stability of the positioning block and the electromagnetic protective cover. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 is a schematic diagram of the structure of an anti-interference motor protector in one embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the disassembled structure of an anti-interference motor protector in the embodiment of Figure 1;

[0020] Figure 3 is a cross-sectional structural diagram of the fixed seat in the embodiment of Figure 1;

[0021] Figure 4 is a cross-sectional view of the stabilizing mechanism in the embodiment of Figure 1;

[0022] Figure 5 is a magnified schematic diagram of the structure at point A in Figure 4.

[0023] In the diagram: 1. Electromagnetic shield; 2. Terminal block; 3. Mounting base; 4. Mounting groove; 5. First cavity; 6. Positioning base; 7. Positioning groove; 8. Positioning block; 9. Bidirectional screw; 10. First handwheel; 11. Limiting groove; 12. Limiting block; 13. Threaded rod; 14. First bevel gear; 15. Second bevel gear; 16. Drive prism; 17. Second handwheel; 18. Mounting plate; 19. Fixing bolt; 20. Heat dissipation vent. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] As shown in Figures 1-5, an anti-interference motor protector according to an embodiment of the present invention is illustrated. The protector includes a protector body, an electromagnetic shield 1, a mounting base 3, and an installation mechanism. The electromagnetic shield 1 is fixedly mounted on the outer wall of the protector body. A wiring terminal 2 is provided on the electromagnetic shield 1, and the wiring terminal 2 is electrically connected to the protector body. The mounting base 3 is located on one side of the electromagnetic shield 1, and a mounting groove 4 is provided on the side wall of the mounting base 3. One end of the electromagnetic shield 1 extends into the mounting groove 4. The installation mechanism is located between the mounting base 3 and the electromagnetic shield 1, and is used to install and fix the mounting base 3 and the electromagnetic shield 1. A heat dissipation vent 20 is provided on the side wall of the electromagnetic shield 1. A protective plate is installed on the side wall of the protector body at the heat dissipation vent 20, and the protective plate contacts the electromagnetic shield 1 for electromagnetic protection. Specifically, the electromagnetic shield 1 can achieve electromagnetic protection for the protector body, thereby preventing the protector body from being affected by electromagnetic interference.

[0031] Referring to Figures 2-4, the installation mechanism includes a first cavity 5, a positioning seat 6, a positioning block 8, a relative movement mechanism, and a stabilizing mechanism. The fixed seat 3 has two first cavities 5 on both sides, which communicate with the fixed groove 4. The positioning seat 6 is slidably disposed within the first cavity 5. A positioning groove 7 is formed on the side wall of the positioning seat 6 closest to the electromagnetic shield 1. Positioning blocks 8 are fixedly disposed on the two opposite side walls of the electromagnetic shield 1, aligning with the positioning groove 7. The side walls of the positioning blocks 8 are provided with an anti-electromagnetic coating. The positioning blocks 8 and positioning groove 7 are shaped to fit each other. The relative movement mechanism is disposed between the fixed seat 3 and the positioning seat 6, used to drive the two positioning seats 6 to move relative to each other. The stabilizing mechanism is... The positioning block 8 is placed on the positioning seat 6 and used to stabilize the positioning block 8 in the positioning groove 7. The relative movement mechanism includes a bidirectional screw 9 and a first handwheel 10. The bidirectional screw 9 is rotatably disposed between the two opposite side walls of the two first cavities 5. The bidirectional screw 9 passes through the two positioning seats 6 through a threaded engagement. The first handwheel 10 is rotatably disposed on the side wall of the fixed seat 3 and is fixedly connected to the bidirectional screw 9. Specifically, the rotation of the first handwheel 10 can drive the bidirectional screw 9 to rotate. At the same time, the threaded engagement between the bidirectional screw 9 and the positioning seat 6 drives the two positioning seats 6 to move relative to each other, so that the positioning block 8 extends into the positioning groove 7 to fix the positioning block 8 and the electromagnetic protective cover 1.

[0032] Referring to Figures 3-5, the stabilizing mechanism includes a limiting groove 11, a threaded rod 13, and a synchronous rotation mechanism. The limiting groove 11 is formed on the side wall of the positioning groove 7. An L-shaped limiting block 12 is slidably disposed within the limiting groove 11. The threaded rod 13 is rotatably disposed on the side wall of the limiting groove 11 and extends into the limiting block 12 through threaded engagement. The rotation mechanism is disposed within the positioning seat 6 and is used to drive the two threaded rods 13 to rotate synchronously. The synchronous rotation mechanism includes a second cavity, a second bevel gear 15, a drive port, and a drive mechanism. The positioning seat 6 has a second cavity on one side of the limiting groove 11. A first bevel gear 14 is rotatably disposed on the inner top wall of the second cavity and is fixedly connected to the threaded rod 13. The second bevel gear 15 is rotatably disposed on the side wall of the second cavity and meshes with the first bevel gear 14. The drive port is located on the positioning seat 6, and the drive mechanism is disposed on the positioning seat 6 and is used to drive the two second bevel gears 15 to rotate synchronously. The drive mechanism includes... The driving prism 16 and the second handwheel 17 are rotatably disposed between the two opposite side walls of the two first cavities 5. The driving prism 16 passes through the driving port and passes through and is slidably connected to the second bevel gear 15. The second handwheel 17 is rotatably disposed on the side wall of the fixed seat 3 and is fixedly connected to the driving prism 16. Specifically, the rotation of the second handwheel 17 can drive the driving prism 16 to rotate. At the same time, the sliding engagement between the driving prism 16 and the second bevel gear 15 drives the second bevel gear 15 to rotate. Thus, the meshing between the second bevel gear 15 and the first bevel gear 14 drives the first bevel gear 14 and the threaded rod 13 to rotate. Then, the threaded engagement between the threaded rod 13 and the limiting block 12 drives the limiting block 12 to move. The movement of the limiting block 12 can press the positioning block 8 onto the side wall of the positioning groove 7, thereby improving the fixing stability of the positioning block 8 and the electromagnetic protective cover 1.

[0033] Referring to Figures 1 and 2, a mounting plate 18 is fixedly installed on the side wall of the mounting base 3. Multiple fixing bolts 19 are installed through the mounting plate 18. Specifically, the mounting base 3 can be installed and fixed by the fixing bolts 19, thereby fixing the electromagnetic shield 1.

[0034] In this embodiment, during use, the operator fixes the fixed seat 3 with the fixing bolt 19, then inserts the positioning block 8 into the fixing groove 4. The operator then rotates the first handwheel 10, which drives the bidirectional screw 9 to rotate. Simultaneously, the threaded engagement between the bidirectional screw 9 and the positioning seat 6 causes the two positioning seats 6 to move relative to each other, thus allowing the positioning block 8 to extend into the positioning groove 7, thereby fixing the positioning block 8 and the electromagnetic shield 1. The operator then rotates the second handwheel 17, which drives the drive prism 16 to rotate. Simultaneously, the threaded engagement between the drive prism 16 and the positioning seat 6 causes the two positioning seats 6 to move relative to each other, thereby fixing the positioning block 8 and the electromagnetic shield 1. The sliding engagement of the second bevel gear 15 drives the second bevel gear 15 to rotate. This, in turn, drives the first bevel gear 14 and the threaded rod 13 to rotate through the meshing of the second bevel gear 15 with the first bevel gear 14. The threaded engagement of the threaded rod 13 with the limiting block 12 causes the limiting block 12 to move. The movement of the limiting block 12 presses the positioning block 8 against the side wall of the positioning groove 7, thereby improving the stability of the positioning block 8 and the electromagnetic protective cover 1. At this time, the electromagnetic protective cover 1 can achieve electromagnetic protection for the protector body, thereby preventing the protector body from being affected by electromagnetic interference.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An anti-interference motor protector, comprising a protector body, characterized in that, Also includes: Electromagnetic shield (1), the electromagnetic shield (1) is fixedly installed on the outer wall of the protector body, the electromagnetic shield (1) is provided with wiring terminals (2), the wiring terminals (2) are electrically connected to the protector body; fixing seat (3), the fixing seat (3) is provided on one side of the electromagnetic shield (1), the side wall of the fixing seat (3) is provided with fixing groove (4); wherein, one end of the electromagnetic shield (1) extends into the fixing groove (4); installation mechanism, the installation mechanism is provided between the fixing seat (3) and the electromagnetic shield (1), and is used to install and fix the fixing seat (3) and the electromagnetic shield (1).

2. The anti-interference motor protector according to claim 1, characterized in that, The installation mechanism includes: a first cavity (5), which is provided on both sides of the fixed seat (3) and is connected to the fixed groove (4); a positioning seat (6), which is slidably disposed in the first cavity (5) and has a positioning groove (7) on the side wall of the positioning seat (6) near the electromagnetic shield (1); a positioning block (8), which is fixedly disposed on the two opposite side walls of the electromagnetic shield (1) and is aligned with the positioning groove (7) and has an anti-electromagnetic coating on its side wall; wherein the positioning block (8) is adapted to the shape of the positioning groove (7); a relative moving mechanism, which is disposed between the fixed seat (3) and the positioning seat (6) and is used to drive the two positioning seats (6) to move relative to each other; and a stabilizing mechanism, which is disposed on the positioning seat (6) and is used to stabilize the positioning block (8) in the positioning groove (7).

3. The anti-interference motor protector according to claim 2, characterized in that, The relative movement mechanism includes: a bidirectional screw (9), which is rotatably disposed between two opposite side walls of the two first cavities (5), and the bidirectional screw (9) passes through the two positioning seats (6) through a threaded connection; and a first handwheel (10), which is rotatably disposed on the side wall of the fixed seat (3), and the first handwheel (10) is fixedly connected to the bidirectional screw (9).

4. The anti-interference motor protector according to claim 3, characterized in that, The stabilizing mechanism includes: a limiting groove (11), which is formed on the side wall of the positioning groove (7), and an L-shaped limiting block (12) is slidably disposed in the limiting groove (11); a threaded rod (13), which is rotatably disposed on the side wall of the limiting groove (11), and the threaded rod (13) extends into the limiting block (12) through threaded engagement; and a synchronous rotation mechanism, which is disposed in the positioning seat (6) and is used to drive the two threaded rods (13) to rotate synchronously.

5. The anti-interference motor protector according to claim 4, characterized in that, The synchronous rotation mechanism includes: a second cavity, wherein the positioning seat (6) is located on one side of the limiting groove (11) and the second cavity is provided, wherein a first bevel gear (14) is rotatably provided on the inner top wall of the second cavity, and the first bevel gear (14) is fixedly connected to the threaded rod (13); a second bevel gear (15), wherein the second bevel gear (15) is rotatably provided on the side wall of the second cavity, and the second bevel gear (15) meshes with the first bevel gear (14); a drive port, wherein the drive port is provided on the positioning seat (6); and a drive mechanism, wherein the drive mechanism is provided on the positioning seat (6) and is used to drive the two second bevel gears (15) to rotate synchronously.

6. The anti-interference motor protector according to claim 5, characterized in that, The driving mechanism includes: a driving prism (16), which is rotatably disposed between two opposite side walls of the two first cavities (5), and the driving prism (16) passes through the driving port; wherein the driving prism (16) passes through the second bevel gear (15) and is slidably connected to the second bevel gear (15); and a second handwheel (17), which is rotatably disposed on the side wall of the fixed seat (3), and the second handwheel (17) is fixedly connected to the driving prism (16).

7. The anti-interference motor protector according to claim 6, characterized in that, The mounting plate (18) is fixedly installed on the side wall of the fixed base (3), and multiple fixing bolts (19) are installed through the mounting plate (18).

8. The anti-interference motor protector according to claim 7, characterized in that, The electromagnetic shield (1) has heat dissipation vents (20) on its side wall.

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