Motor transition joint wire hole sealing ring

Abstract

The utility model relates to the technical field of sealing ring discloses motor transition joint wire hole sealing ring, including mounting ring and a plurality of sealing ring body, mounting ring and sealing ring body detachable connection, each sealing ring body is provided with sealing hole respectively for wire passing, and each sealing hole corresponds to the wire of different size diameter respectively, sealing ring body includes the sealing portion and the installation portion of integrated mould, and the installation portion is set in the outer periphery of mounting ring, and the end away from sealing portion of installation portion forms the limit portion to the inside, and the mounting ring end portion abuts on the limit portion, is provided with recess on sealing portion, and the inner periphery of recess is provided with annular protruding, and the outer periphery of the end of mounting ring close to sealing portion is provided with first clamping slot, and annular protruding is clamped in first clamping slot, and sealing hole is located in recess middle part. The utility model intends to solve the problem that the whole sealing ring in the prior art cannot be flexibly adapted to different diameter wires, and assembly maintenance is difficult.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, specifically to a sealing ring for the wire hole of a motor transition joint. Background Technology

[0002] In the manufacturing and application of various motors, the motor transition joint serves as a crucial channel connecting the internal winding conductors to the external power cable. The reliability of its sealing performance directly determines the overall protection level and service life of the motor. Motors, especially those used in new energy vehicles, industrial drives, and underwater equipment, often operate in harsh environments characterized by humidity, dust, oil, and even corrosive media. If the seal at the transition joint fails, moisture, dust, and other contaminants will penetrate the motor through the conductor gaps, leading to a decline in winding insulation performance, causing electrical faults such as short circuits and breakdowns. It will also accelerate the corrosion of metal components, ultimately resulting in performance degradation or even complete burnout of the motor. Therefore, designing efficient and reliable conductor sealing rings for this part is one of the core technical aspects for ensuring long-term stable operation of the motor and meeting IP67 and higher protection requirements.

[0003] Currently, the industry commonly uses an integral rubber sealing ring structure for sealing the wires in motor transition joints. The typical practice is to pre-drill a number and size of wire perforations on a rubber block according to the diameter and quantity of the wire bundle. During assembly, the wires are passed through these perforations one by one, and then the entire sealing ring is pressed into the sealing groove of the motor transition joint. Its sealing principle mainly relies on the elastic deformation of the rubber material itself: when the sealing ring is compressed axially or radially, the rubber undergoes elastic deformation, tightly wrapping around each wire and filling all gaps in the sealing groove, thus forming a sealing interface. To enhance the fixing effect and prevent loosening, some designs also incorporate flanges, grooves, or other structures on the outer circumference or end face of the sealing ring, which cooperate with the sealing groove.

[0004] However, the existing wire sealing ring design has several significant drawbacks: First, it requires extremely high consistency in wire diameter. When the wires to be sealed have significantly different diameters or are non-circular flat wires, the pre-drilled aperture is difficult to perfectly match all wires, easily leading to insufficient sealing for thin wires or excessive compression of thick wires, damaging the insulation layer. Second, during the wire threading process, operators need to precisely align and thread multiple wires through multiple small holes, making the assembly process cumbersome and inefficient. Furthermore, the threading process can easily scratch the inner wall of the sealing ring, creating a potential leakage hazard. Finally, if a single wire in the integral sealing ring needs replacement or repair, the entire sealing ring and all wires must be disassembled together, resulting in extremely poor maintainability. Moreover, after long-term use, the rubber material is prone to aging and permanent deformation, leading to a decrease in sealing pressure. Under thermal cycling and vibration conditions, micro-gaps may form between the sealing ring and the wire, making it difficult to maintain sealing reliability over the long term. Utility Model Content

[0005] The present invention aims to provide a sealing ring for the wire hole of a motor transition joint, so as to solve the problem that the integral sealing ring in the prior art cannot flexibly adapt to wires of different diameters and is difficult to assemble and maintain.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The motor transition joint wire hole sealing ring includes a mounting ring and multiple sealing ring bodies. The mounting ring and the sealing ring bodies are detachably connected. Each sealing ring body is provided with a sealing hole for the wire to pass through, and each sealing hole corresponds to a wire of different diameters. The sealing ring body includes an integrally formed sealing part and a mounting part. The mounting part is sleeved on the outer periphery of the mounting ring, and the end of the mounting part away from the sealing part forms a limiting part inward. The end of the mounting ring abuts against the limiting part. The sealing part is provided with a groove, and the inner periphery of the groove is provided with an annular protrusion. The outer periphery of the end of the mounting ring near the sealing part is provided with a first groove, and the annular protrusion is engaged in the first groove. The sealing hole is located in the middle of the groove.

[0007] Beneficial effects: 1. By setting multiple sealing ring bodies with sealing holes of different diameters, one sealing device can adapt to a variety of wires of different diameters, achieving universality. Moreover, the most suitable sealing ring body can be quickly selected and combined according to the actual wire diameter on site, ensuring that each wire can obtain the best interference fit and sealing effect, avoiding the trouble and cost of stocking different specifications of seals for each wire diameter.

[0008] 2. The sealing ring body adopts an integral molding structure, which improves the structural strength and avoids the leakage points that may exist in the split structure. At the same time, the first axial limit is achieved by the abutment of the limiting part and the end of the mounting ring, and the second axial limit is achieved by the engagement of the annular protrusion and the first groove. This effectively prevents the sealing ring body from moving along the mounting axis, ensuring the firmness and stability of the connection between the sealing ring body and the mounting ring, and effectively preventing the mounting ring from loosening.

[0009] 3. The sealing hole is set in the middle of the groove, so that the wire is wrapped in the structural center of the sealing ring body. When the sealing ring body is squeezed, it can shrink evenly towards the center, thus making the sealing pressure applied to the wire more concentrated and uniform, thereby improving the radial sealing effect on the wire and effectively preventing the medium from entering along the surface of the wire.

[0010] Preferably, as an improvement, a notch is provided on one side of the sealing ring body to facilitate the installation of the mounting ring.

[0011] Beneficial effects: The notch design allows the sealing ring to be opened directly like a snap and fitted onto the wire and mounting ring without having to insert it from the end of the wire, greatly simplifying the installation and replacement process and saving time and manpower.

[0012] Preferably, as an improvement, the mounting part is provided with a shield for sealing at the notch.

[0013] Beneficial effects: The design of the shielding part effectively prevents impurities, moisture and other substances from entering the motor through the gap, and also prevents the gap from deforming or expanding under the pressure of the wires, ensuring the integrity of the sealing ring body and the integrity of the sealing effect.

[0014] Preferably, as an improvement, a second slot is provided on the outer periphery of the mounting ring, and the outer periphery of the mounting part is fixedly connected to the second slot by a clamp, and the first slot and the second slot are arranged along the thickness direction of the mounting ring.

[0015] Beneficial effects: By using clamps to firmly fix the mounting part and the shielding part at the notch in the second groove, it is ensured that the sealing ring body will not accidentally detach from the mounting ring under any circumstances, which greatly improves the safety and reliability of the entire sealing device; and the first groove is used for radial positioning, the second groove is used for final fastening, and the two grooves are arranged along the thickness direction, which makes the structure of the mounting ring compact, the functional division clear, and easy to process and assemble.

[0016] Preferably, as an improvement, the diameter of each sealing hole is smaller than the diameter of the wire.

[0017] Beneficial effects: The deformation capacity of the elastic sealing material allows the sealing hole with a slightly smaller diameter to be tightly wrapped around the wire, forming an interference fit. This effectively fills the gap between the wire and the sealing hole, thereby achieving excellent radial sealing and preventing the intrusion of media such as oil, water, and dust.

[0018] Preferably, as an improvement, the bottom of the sealing part has a fitting part that fits with the motor end cover.

[0019] Beneficial effects: The mating part serves as a positioning reference, enabling operators to quickly and accurately place the entire sealing ring into the correct position on the motor end cover, reducing adjustment time and improving installation efficiency. Secondly, the tight fit between the mating part and the motor end cover forms an additional end-face sealing barrier, which helps prevent external contaminants from migrating back into the interior along the surface of the motor end cover, thus improving the overall anti-leakage performance. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0021] Figure 2This is a cross-sectional view of an embodiment of the present utility model.

[0022] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0023] Figure 4 This is a schematic diagram of the mounting ring in an embodiment of the present invention.

[0024] Figure 5 This is a cross-sectional view of the sealing ring body in an embodiment of this utility model.

[0025] The reference numerals in the accompanying drawings include: mounting ring 1, first groove 11, second groove 12, sealing ring body 2, sealing hole 21, sealing part 22, groove 221, annular protrusion 222, mounting part 23, shielding part 231, limiting part 24, notch 25, fitting part 26, and clamp 3. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figures 1-5 As shown: like Figure 1 and Figure 2 As shown, this embodiment provides a motor transition joint wire hole sealing ring, including a mounting ring 1 and multiple sealing ring bodies 2. The mounting ring 1 and the sealing ring bodies 2 are detachably connected. Each sealing ring body 2 is provided with a sealing hole 21 for the wire to pass through, and each sealing hole 21 corresponds to a wire of different diameters. The diameter of each sealing hole 21 is smaller than the diameter of the wire, so that the sealing ring body 2 can seal the gap between the wires after being installed on the mounting ring 1. Furthermore, the sealing body with sealing holes 21 of different sizes can accommodate wires of different diameters, allowing for the selection of a suitable sealing ring body 2 during installation, thereby improving the sealing effect between the wires. It is worth noting that in this embodiment, the mounting ring 1 is made of steel, and the sealing ring bodies 2 are made of rubber.

[0027] like Figure 3 and Figure 5As shown, the sealing ring body 2 includes an integrally formed sealing part 22 and a mounting part 23. The mounting part 23 is sleeved on the outer periphery of the mounting ring 1, and a limiting part 24 is formed inward at the end of the mounting part 23 away from the sealing part 22. The end of the mounting ring 1 abuts against the limiting part 24 to achieve the first axial limiting. A limiting groove is formed between the snap-fit ​​portion extending from the end of the limiting part 24 toward the sealing part 22 and the mounting part 23. The mounting ring 1 is located in the limiting groove to achieve radial positioning of the mounting ring 1. A groove 221 is provided on the sealing part 221, and an annular protrusion 222 is provided on the inner periphery of the groove 221. A first retaining groove 11 is provided on the outer periphery of the end of the mounting ring 1 near the sealing part 22. The annular protrusion 222 engages in the first retaining groove 11 to form the second axial positioning. The sealing hole 21 is located in the middle of the groove 221.

[0028] For ease of installation, such as Figure 1 As shown, a notch 25 is provided on one side of the sealing ring body 2 to facilitate the installation of the mounting ring 1. During installation, both the mounting ring 1 and the wire can enter the appropriate position of the sealing ring body 2 through the notch 25. To prevent the notch 25 from enlarging under the pressure of the wire and to prevent impurities from entering the motor through the notch 25, as shown... Figure 3 As shown, in this embodiment, the mounting part 23 is provided with a sealing member 231 at the notch 25, and the mounting part 23 and the sealing member 231 are fixedly connected to the second groove 12 provided on the outer periphery of the mounting ring 1 by the clamp 3. Figure 4 As shown, the first slot 11 and the second slot 12 are arranged along the thickness direction of the mounting ring 1.

[0029] To facilitate the quick positioning and installation of the sealing ring into the appropriate position, in this embodiment, the bottom of the sealing part 22 is formed with a fitting part 26 that fits against the motor end cover.

[0030] The process of using the above-mentioned device is as follows: First, the mounting ring 1 is placed around the outer circumference of the wire, and the mounting ring 1 is moved to the part that needs to be sealed. Then, a suitable sealing ring body 2 is selected according to the diameter of the wire. The notch 25 on the selected sealing ring body 2 is pried open, and the mounting ring 1 and the wire are passed through the notch 25. At this time, the wire is located in the sealing hole 21, and the mounting ring 1 is located in the groove 221, with the end of the mounting ring 1 abutting against the limiting part 24. Then, the blocking part 231 at the notch 25 is pulled down, and the blocking part 231 and the mounting part 23 are clamped together in the second slot 12 by the clamp 3. Next, the entire sealing ring is installed at the motor transition section. At this time, the mounting part 23 is located inside the motor, and the fitting part 26 is fitted to the outer circumference of the end cover outside the motor. Finally, in order to avoid poor sealing effect of the notch 25 on the sealing part 22, the operator can also spray sealant on the sealing ring.

[0031] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A sealing ring for the wire hole of a motor transition joint, characterized in that: The device includes a mounting ring and multiple sealing ring bodies. The mounting ring and the sealing ring bodies are detachably connected. Each sealing ring body is provided with a sealing hole for the passage of a wire, and each sealing hole corresponds to a wire of a different diameter. The sealing ring body includes an integrally formed sealing part and a mounting part. The mounting part is sleeved on the outer periphery of the mounting ring, and a limiting part is formed inward at the end of the mounting part away from the sealing part. The end of the mounting ring abuts against the limiting part. A groove is provided on the sealing part, and an annular protrusion is provided on the inner periphery of the groove. A first retaining groove is provided on the outer periphery of the end of the mounting ring near the sealing part, and the annular protrusion is engaged in the first retaining groove. The sealing hole is located in the middle of the groove.

2. The sealing ring for the wire hole of the motor transition joint according to claim 1, characterized in that: The sealing ring body has a notch on one side to facilitate the installation of the mounting ring.

3. The sealing ring for the wire hole of the motor transition joint according to claim 2, characterized in that: The mounting section has a sealing element at the notch.

4. The sealing ring for the wire hole of the motor transition joint according to claim 3, characterized in that: The outer circumference of the mounting ring is provided with a second slot, and the outer circumference of the mounting part is fixedly connected to the second slot by a clamp, and the first slot and the second slot are arranged along the thickness direction of the mounting ring.

5. The sealing ring for the wire hole of the motor transition joint according to claim 4, characterized in that: The diameter of each sealing hole is smaller than the diameter of the wire.

6. The motor transition joint wire hole sealing ring according to claim 5, characterized in that: The bottom of the sealing part has a fitting part that fits with the motor end cover.

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