A rust-proof permanent magnet synchronous motor end cover assembly

Abstract

The utility model discloses a rustproof permanent magnet synchronous motor end cover subassembly relates to permanent magnet synchronous motor rustproof technical field, the utility model discloses a permanent magnet synchronous motor, the permanent magnet synchronous motor left side is equipped with the end cover, still include: sealing assembly, sealing assembly installs in the one side of end cover close to permanent magnet synchronous motor. The utility model discloses a sealing assembly is set up, specifically is with annular boss no.

Description

Technical Field

[0001] This utility model belongs to the field of rust prevention technology for permanent magnet synchronous motors, and in particular relates to a rust-proof permanent magnet synchronous motor end cover assembly. Background Technology

[0002] Permanent magnet synchronous motors (PMSMs) are AC synchronous motors that use permanent magnets to establish the excitation magnetic field. With their advantages such as high efficiency, high power density, high torque-to-inertia ratio, wide speed range, and excellent dynamic response, they have become the core choice in modern high-performance drive applications, especially dominating in fields such as new energy vehicles, industrial automation, home appliances, and renewable energy.

[0003] When a permanent magnet synchronous motor operates in harsh environments such as humid and dusty conditions, the sealing performance and rust prevention capabilities of the end cover assembly directly affect the motor's service life and reliability. Existing end covers are mostly connected to permanent magnet synchronous motors using a single-layer sealing ring to prevent moisture from entering the end cover and thus achieve rust prevention. However, the sealing effect of a single-layer sealing ring is not ideal, and the end cover also lacks an active moisture absorption device. Therefore, we propose a rust-proof permanent magnet synchronous motor end cover assembly. Utility Model Content

[0004] The purpose of this utility model is to provide a rust-resistant permanent magnet synchronous motor end cover assembly. This assembly utilizes a sealing component, specifically by inserting annular protrusion one and annular protrusion two into annular groove one and annular groove two, respectively. Several bolts are then inserted into holes on the flange ring and tightened. After tightening, the sealing gaskets are compressed, blocking the gap between the bolts and the holes on the flange ring. Sealing gaskets one and two are compressed and unfolded to block the gap, achieving a secondary seal. Furthermore, the sealing rings on the right side of annular protrusions one and two are compressed and filled with the surrounding gaps, further sealing the assembly. Four moisture-absorbing boxes are installed on the inner wall of the end cover, using calcium chloride material to absorb moisture and prevent corrosion of internal parts. This design solves the problem that existing permanent magnet synchronous motor end covers often use a single sealing ring to seal the gap between the end cover and the permanent magnet synchronous motor to prevent moisture corrosion of the internal parts, but the sealing effect of this structure is not ideal, resulting in poor rust prevention.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a rust-resistant permanent magnet synchronous motor end cover assembly, comprising a permanent magnet synchronous motor, wherein an end cover is installed on the left side of the permanent magnet synchronous motor, and further comprising:

[0007] A sealing assembly, installed on the side of the end cover near the permanent magnet synchronous motor, is used to prevent moisture from entering the interior of the end cover; and

[0008] A drainage assembly is installed on the outer surface of the end cap and is used to drain water droplets adhering to the outer surface of the end cap.

[0009] Furthermore, the sealing assembly includes a flange ring, which is installed on the side of the end cover near the permanent magnet synchronous motor. The flange ring and the side of the permanent magnet synchronous motor near the end cover both have several holes. Bolts are installed in the holes, and sealing gaskets are fitted on the outer surface of the bolts.

[0010] Furthermore, annular protrusion one and annular protrusion two are installed on the side of the flange ring near the permanent magnet synchronous motor, and annular groove one and annular groove two are opened on the side of the permanent magnet synchronous motor near the end cover. Annular protrusion one and annular groove one are slidably limited to each other, and annular protrusion two and annular groove two are slidably limited to each other. Sealing rings are installed on the side of annular protrusion one and annular protrusion two near the permanent magnet synchronous motor.

[0011] Furthermore, a sealing gasket one and a sealing gasket two are installed on the side of the permanent magnet synchronous motor near the end cover, and both sealing gasket one and sealing gasket two abut against the side of the flange ring near the permanent magnet synchronous motor.

[0012] Furthermore, four mounting seats are fixedly connected to the inner wall of the end cap, and each of the four mounting seats has a slot on both sides.

[0013] Furthermore, a moisture-absorbing box is installed inside the mounting base. Side strips are fixedly connected to both sides of the moisture-absorbing box, and rubber blocks are installed at both ends of the side strips. The rubber blocks are cylindrical. The moisture-absorbing box slides and is limited by the side strips on both sides to two slots on the mounting base. The rubber blocks are made of rubber.

[0014] Furthermore, the outer surface of the end cap is provided with a plurality of drainage grooves, which are inclined.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, through the setting of a sealing component, specifically inserts annular protrusion one and annular protrusion two into annular groove one and annular groove two respectively, and then inserts several bolts into the holes on the flange ring and tightens them. After tightening, the sealing gasket is squeezed, blocking the gap between the bolt and the hole on the flange ring. Sealing gasket one and sealing gasket two are squeezed and unfolded to block the gap, achieving secondary sealing. Moreover, the sealing ring on the right side of annular protrusion one and annular protrusion two is squeezed to fill the surrounding gap, further sealing. Four moisture-absorbing boxes are installed on the inner wall of the end cover, and the interior of the boxes uses calcium chloride material to absorb moisture and prevent internal parts from rusting.

[0017] 2. This utility model provides a drainage component, specifically, a number of drainage grooves are provided on the outer surface of the end cap. The drainage grooves are inclined, and the permanent magnet synchronous motor will vibrate when it is working. The vibration can cause the water droplets attached to the outer surface of the end cap to be discharged along the inclined surface under the action of gravity, preventing the water droplets from adhering to the outer surface of the end cap for a long time and causing rust.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the end cap structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the sealing assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the drainage component of this utility model;

[0024] Figure 5 This is a schematic diagram of the drainage trough structure of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Permanent magnet synchronous motor; 11. End cover; 2. Sealing assembly; 21. Flange ring; 211. Annular protrusion one; 212. Annular protrusion two; 221. Bolt; 222. Sealing gasket; 231. Annular groove one; 232. Annular groove two; 233. Sealing gasket one; 234. Sealing gasket two; 24. Mounting base; 241. Slot; 25. Moisture absorption box; 251. Edge strip; 252. Rubber block; 3. Drainage assembly; 31. Drain groove. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 As shown, this utility model is a rust-resistant permanent magnet synchronous motor end cover assembly, including a permanent magnet synchronous motor 1, an end cover 11 installed on the left side of the permanent magnet synchronous motor 1, and further including:

[0029] Sealing assembly 2 is installed on the side of end cover 11 near permanent magnet synchronous motor 1. Sealing assembly 2 is used to prevent moisture from entering the interior of end cover 11; and

[0030] Drainage component 3 is installed on the outer surface of end cap 11 and is used to drain water droplets adhering to the outer surface of end cap 11.

[0031] The sealing assembly 2 includes a flange ring 21, which is installed on the side of the end cover 11 near the permanent magnet synchronous motor 1. Both the flange ring 21 and the side of the permanent magnet synchronous motor 1 near the end cover 11 have several holes. Bolts 221 are installed in the holes, and sealing gaskets 222 are fitted on the outer surface of the bolts 221.

[0032] An annular protrusion 211 and an annular protrusion 212 are installed on the side of the flange ring 21 near the permanent magnet synchronous motor 1. An annular groove 231 and an annular groove 232 are opened on the side of the permanent magnet synchronous motor 1 near the end cover 11. Annular protrusion 211 and annular groove 231 are in sliding limit engagement, and annular protrusion 212 and annular groove 232 are in sliding limit engagement. Sealing rings are installed on the side of annular protrusion 211 and annular protrusion 212 near the permanent magnet synchronous motor 1.

[0033] A sealing gasket 1 233 and a sealing gasket 234 are installed on the side of the permanent magnet synchronous motor 1 near the end cover 11. Both sealing gasket 1 233 and sealing gasket 234 abut against the side of the flange ring 21 near the permanent magnet synchronous motor 1.

[0034] The inner wall of the end cap 11 is fixedly connected with four mounting seats 24, and each of the four mounting seats 24 has a slot 241 on both sides.

[0035] A moisture-absorbing box 25 is installed inside the mounting base 24. Side strips 251 are fixedly connected to both sides of the moisture-absorbing box 25. Rubber blocks 252 are installed at both ends of the side strips 251. The rubber blocks 252 are cylindrical. The moisture-absorbing box 25 slides and is limited by the side strips 251 on both sides, respectively, into two slots 241 on the mounting base 24. The rubber blocks 252 are made of rubber. Annular protrusion 1 211 and annular protrusion 212 are inserted into annular groove 1 231 and annular groove 232, respectively. Then, several screws... Bolt 221 is inserted into the hole on flange ring 21 and tightened. After tightening, sealing gasket 222 is squeezed, blocking the gap between bolt 221 and the hole on flange ring 21. Sealing gasket 1 233 and sealing gasket 234 are squeezed and unfolded to block the gap, achieving secondary sealing. The sealing rings on the right side of annular protrusion 1 211 and annular protrusion 212 are squeezed to fill the surrounding gap, further sealing. Four moisture-absorbing boxes 25 are installed on the inner wall of end cover 11. The inside of these boxes uses calcium chloride material to absorb moisture and prevent internal parts from rusting.

[0036] Several drainage grooves 31 are provided on the outer surface of the end cap 11. The drainage grooves 31 are inclined. The permanent magnet synchronous motor 1 will vibrate when it is working. The vibration can cause the water droplets attached to the outer surface of the end cap 11 to be discharged along the inclined surface under the action of gravity, preventing the water droplets from being attached to the outer surface of the end cap 11 for a long time and causing it to rust.

[0037] A specific application of this embodiment is as follows: When in use, a number of drainage grooves 31 are provided on the outer surface of the end cap 11. The drainage grooves 31 are inclined, and the permanent magnet synchronous motor 1 will vibrate when working. The vibration can cause the water droplets attached to the outer surface of the end cap 11 to be discharged along the inclined surface under the action of gravity, preventing the water droplets from being attached to the outer surface of the end cap 11 for a long time and causing it to rust.

[0038] When installing the end cover 11, first insert the annular protrusion 211 and annular protrusion 212 on the right side of the end cover 11 into the annular groove 231 and annular groove 232 on the left side of the permanent magnet synchronous motor 1, respectively. Then, insert several bolts 221 into several holes on the flange ring 21, and then tighten them one by one with a wrench. After tightening, the sealing gasket 222 on the outer surface of the bolt 221 will be squeezed, which can block the gap between the bolt 221 and the hole on the flange ring 21, so as to prevent moisture from entering the end cover 11 through the hole on the flange ring 21. At the same time, the sealing gasket 233 and sealing gasket 234 on the left side of the permanent magnet synchronous motor 1 will also be squeezed, so that the sealing gasket 233 and sealing gasket 234 will unfold to block the gap, achieving a secondary sealing effect. At the same time, the sealing rings installed on the right side of the annular protrusion 211 and annular protrusion 212 will also be squeezed to fill the surrounding gap, achieving a further sealing effect.

[0039] Four moisture-absorbing boxes 25 are installed on the inner wall of the end cap 11. The inside of the moisture-absorbing box 25 is made of calcium chloride material, which can absorb moisture in the end cap 11 and prevent the internal parts of the end cap 11 from rusting. The moisture-absorbing box 25 can be replaced regularly to achieve a stable moisture absorption effect. When replacing, pull out the moisture-absorbing box 25 with force. Since the rubber blocks 252 at both ends of the side strip 251 are made of rubber, the rubber blocks 252 will be squeezed and deformed when the moisture-absorbing box 25 is pulled out, so that the moisture-absorbing box 25 can be pulled out smoothly. When reinstalling, insert the side strips 251 on both sides of the moisture-absorbing box 25 into the slots 241 on both sides of the mounting base 24 at the same time.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rust-resistant permanent magnet synchronous motor end cover assembly, comprising a permanent magnet synchronous motor (1), wherein an end cover (11) is mounted on the left side of the permanent magnet synchronous motor (1), characterized in that, Also includes: A sealing assembly (2) is installed on the side of the end cap (11) near the permanent magnet synchronous motor (1), the sealing assembly (2) being used to prevent moisture from entering the interior of the end cap (11); and Drainage assembly (3), which is installed on the outer surface of end cap (11), is used to drain water droplets attached to the outer surface of end cap (11); The sealing assembly (2) includes a flange ring (21), which is installed on the side of the end cover (11) near the permanent magnet synchronous motor (1). The flange ring (21) and the side of the permanent magnet synchronous motor (1) near the end cover (11) are provided with several holes. Bolts (221) are installed in the holes, and sealing gaskets (222) are fitted on the outer surface of the bolts (221).

2. The anti-corrosion permanent magnet synchronous motor end cover assembly according to claim 1, characterized in that, The flange ring (21) is equipped with an annular protrusion one (211) and an annular protrusion two (212) on the side near the permanent magnet synchronous motor (1). The permanent magnet synchronous motor (1) is provided with an annular groove one (231) and an annular groove two (232) on the side near the end cover (11). The annular protrusion one (211) and the annular groove one (231) are in sliding limit cooperation. The annular protrusion two (212) and the annular groove two (232) are in sliding limit cooperation. Both the annular protrusion one (211) and the annular protrusion two (212) are equipped with sealing rings on the side near the permanent magnet synchronous motor (1).

3. The anti-corrosion permanent magnet synchronous motor end cover assembly according to claim 2, characterized in that, The permanent magnet synchronous motor (1) is equipped with a sealing gasket one (233) and a sealing gasket two (234) on the side near the end cover (11). Both the sealing gasket one (233) and the sealing gasket two (234) abut against the side of the flange ring (21) near the permanent magnet synchronous motor (1).

4. The anti-corrosion permanent magnet synchronous motor end cover assembly according to claim 3, characterized in that, The inner wall of the end cap (11) is fixedly connected with four mounting seats (24), and each of the four mounting seats (24) has a slot (241) on both sides.

5. The anti-corrosion permanent magnet synchronous motor end cover assembly according to claim 4, characterized in that, A moisture-absorbing box (25) is installed inside the mounting base (24). Both sides of the moisture-absorbing box (25) are fixedly connected with side strips (251). Both ends of the side strips (251) are equipped with rubber blocks (252). The rubber blocks (252) are cylindrical. The moisture-absorbing box (25) slides and is limited by the side strips (251) on both sides of the mounting base (24) through two slots (241). The rubber blocks (252) are made of rubber.

6. The anti-corrosion permanent magnet synchronous motor end cover assembly according to claim 5, characterized in that, The outer surface of the end cap (11) is provided with a plurality of drainage grooves (31), and the drainage grooves (31) are inclined.

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