End cover sealing ring for new energy automobile electric drive system

Abstract

The utility model discloses an end cover sealing ring for an electric drive system of a new energy automobile, and relates to the technical field of end cover sealing rings, the sealing ring is mainly composed of a sealing base body and a corrugated sealing ring detachably arranged on the periphery of the sealing base body, the outer wall of the corrugated sealing ring is provided with a plurality of annular corrugated grooves, and a plurality of inserting blocks are fixed on the inner wall of the corrugated sealing ring in a surrounding mode. An inserting groove matched with the inserting block is formed in the outer wall of the sealing base body; due to the arrangement of the annular corrugated groove, during installation, the annular corrugated groove can be embedded into a corresponding assembly structure of the end cover of the electric drive system, rapid and accurate positioning is achieved through the deformation adaptation and limiting characteristics of corrugations, deviation and dislocation of the sealing ring are avoided, and it is guaranteed that sealing faces are evenly attached; meanwhile, after the corrugated grooves are extruded, assembling gaps can be filled, the sealing barrier property is enhanced, the risks of oil leakage and water vapor invasion are effectively reduced, and the protection capacity and operation stability of an electric drive system are improved.

Description

Technical Field

[0001] This utility model relates to the field of end cap sealing ring technology, specifically to end cap sealing rings for electric drive systems of new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, electric drive systems, as the core power unit, are facing increasingly stringent requirements for reliability and sealing. The end cap seal ring, as a key sealing component between the motor end cap and the housing in the electric drive system, directly affects motor protection, insulation, and overall operational stability.

[0003] The existing end cap sealing rings of electric drive systems for new energy vehicles have obvious defects in practical applications due to their rubber-free corrugated design: they are difficult to position accurately during installation, are prone to displacement and misalignment, resulting in uneven sealing; the vibration generated by the motor operation can also cause the sealing ring to shift, damage the sealing interface, increase the risk of oil leakage and water vapor intrusion, and thus affect the service life and performance of the electric drive system. Utility Model Content

[0004] To solve the above-mentioned technical problems, an end cap sealing ring for electric drive systems of new energy vehicles is provided, which solves the problems existing in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an end cap sealing ring for an electric drive system of a new energy vehicle. The sealing ring is mainly composed of a sealing substrate and a corrugated sealing ring that can be detached from the outer periphery of the sealing substrate. The outer wall of the corrugated sealing ring is provided with several annular corrugated grooves.

[0006] The inner wall of the corrugated sealing ring is fixed with several plug-in blocks, and the outer wall of the sealing substrate is provided with plug-in grooves that are adapted to the plug-in blocks.

[0007] Preferably, a nut seat is vertically fixed on the inner wall of the bottom end of the insertion slot, the bottom end of the insertion block is provided with a relief groove for accommodating the nut seat, and a screw passes through the top end of the insertion block, with the bottom end of the screw threaded into the nut seat.

[0008] Preferably, the top of the plug block is further provided with a hidden groove, the nut of the screw is accommodated in the hidden groove, and the top of the nut does not extend beyond the opening end face of the hidden groove.

[0009] Preferably, the sealing substrate and the corrugated sealing ring are made primarily of ACM.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] (1) By setting the annular corrugated groove, during installation, the annular corrugated groove can be embedded into the corresponding assembly structure of the electric drive system end cover. By utilizing the deformation adaptation and limiting characteristics of the corrugation, it can be quickly and accurately positioned to avoid the seal ring from shifting or misaligning, and to ensure uniform contact of the sealing surface. At the same time, after the corrugated groove is squeezed, it can fill the assembly gap, enhance the sealing barrier, effectively reduce the risk of oil leakage and water vapor intrusion, and improve the protection capability and operational stability of the electric drive system.

[0012] (2) By setting a detachable connection between the corrugated sealing ring and the sealing substrate, when the annular corrugated groove on the outer wall of the corrugated sealing ring wears and ages due to long-term use, resulting in a decrease in sealing or positioning function, it is not necessary to scrap the entire sealing ring. With the detachable design of the corrugated sealing ring and the sealing substrate, the corrugated sealing ring can be replaced separately. This can significantly shorten maintenance time, reduce the material cost of overall replacement, and improve the operation and maintenance efficiency of the electric drive system. Furthermore, according to the different electric drive operating conditions, corrugated sealing rings with corresponding corrugated parameters such as quantity, depth, and spacing can be flexibly replaced, allowing the same sealing substrate to adapt to various scenarios, enhancing the product's adaptability to the differentiated needs of the electric drive system, and expanding the scope of application. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the separation structure of the sealing substrate and the corrugated sealing ring of this utility model.

[0015] The numbers on the map are:

[0016] 1. Sealing substrate; 2. Corrugated sealing ring; 3. Insertion block; 4. Insertion groove; 5. Nut seat; 6. Screw; 7. Hidden groove. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] Reference Figure 1-2 As shown, the end cover sealing ring for the electric drive system of new energy vehicles is mainly composed of a sealing base 1 and a corrugated sealing ring 2 that can be detached from the outer periphery of the sealing base 1. The outer wall of the corrugated sealing ring 2 is provided with several annular corrugated grooves.

[0019] With the design of the annular corrugated groove, during installation, the annular corrugated groove can be embedded into the corresponding assembly structure of the electric drive system end cover. Utilizing the deformation adaptation and limiting characteristics of the corrugation, it can be quickly and accurately positioned, avoiding the offset or misalignment of the sealing ring and ensuring uniform contact of the sealing surface. At the same time, when the corrugated groove is compressed, it can fill the assembly gap, enhance the sealing barrier, effectively reduce the risk of oil leakage and water vapor intrusion, and improve the protection capability and operational stability of the electric drive system.

[0020] Furthermore, due to the detachable connection between the corrugated sealing ring 2 and the sealing base 1, when the annular corrugated groove on the outer wall of the corrugated sealing ring 2 wears and ages due to long-term use, resulting in a decline in sealing or positioning function, it is not necessary to scrap the entire sealing ring. Thanks to the detachable design of the corrugated sealing ring 2 and the sealing base 1, only the corrugated sealing ring 2 needs to be replaced. This can significantly shorten maintenance time, reduce the material cost of overall replacement, and improve the operation and maintenance efficiency of the electric drive system. Moreover, according to the different electric drive operating conditions, corrugated sealing rings 2 with corresponding corrugated parameters such as quantity, depth, and spacing can be flexibly replaced, allowing the same sealing base 1 to adapt to various scenarios, enhancing the product's adaptability to the differentiated needs of the electric drive system, and expanding the scope of application.

[0021] Furthermore, referring to Figure 2 As shown, it is worth noting that the inner wall of the corrugated sealing ring 2 is surrounded and fixed with several plug-in blocks 3, and the outer wall of the sealing base 1 is provided with plug-in grooves 4 that are adapted to the plug-in blocks 3.

[0022] By using the plug-in block 3 and the plug-in slot 4, the sealing substrate 1 and the corrugated sealing ring 2 can be plugged together. During assembly, the plug-in block 3 can be quickly inserted into the plug-in slot 4 to achieve precise pre-positioning without repeated adjustment and alignment, thus improving installation efficiency. Moreover, the plug-in structure can limit the relative displacement between the sealing substrate 1 and the corrugated sealing ring 2, enhance the connection stability, and ensure that the overall structure of the sealing ring is not easily loosened under complex operating conditions of the electric drive system, such as vibration and impact. At the same time, if the corrugated sealing ring 2 needs to be replaced later, it can be separated by applying force along the plug-in direction, which is simple to operate, facilitates maintenance, and effectively simplifies the assembly and maintenance process.

[0023] Furthermore, referring to Figure 2 As shown, it is worth noting that a nut seat 5 is vertically fixed on the inner wall of the bottom end of the insertion slot 4, and the bottom end of the insertion block 3 is provided with a relief groove for accommodating the nut seat 5. A screw 6 passes through the top end of the insertion block 3, and the bottom end of the screw 6 is screwed into the nut seat 5.

[0024] The top of the plug block 3 is also provided with a hidden groove 7, the nut of the screw 6 is accommodated in the hidden groove 7, and the top of the nut does not exceed the opening end face of the hidden groove 7.

[0025] The combination of nut seat 5, screw 6, and hidden groove 7 forms a dual connection structure of "pre-positioning by insertion + screw fastening". During operation, the insertion block 3 first adapts to the insertion groove 4 to achieve initial pre-positioning of the corrugated sealing ring 2 and the sealing base 1, limiting their relative circumferential and radial displacement. Subsequently, the screw 6 penetrates the insertion block 3 and engages with the nut seat 5, precisely transmitting the axial tightening force to the connection point, significantly enhancing the connection strength between the corrugated sealing ring 2 and the sealing base 1. Even under high-frequency vibration and impact from the electric drive system, loosening can be effectively prevented. During assembly, the pre-positioning by insertion simplifies alignment, and the hidden groove 7 accommodates the nut, avoiding interference and scratches with surrounding components and ensuring the integrity of the sealing surface. When replacing the corrugated sealing ring 2 later, simply unscrewing the screw 6 releases the fastening. Combined with the separable nature of the insertion, component replacement can be completed quickly, reducing maintenance difficulty. From installation to maintenance, the entire process balances convenience and stability, adapting to the operating conditions of new energy vehicle electric drive systems.

[0026] Furthermore, it is worth noting that the sealing substrate 1 and the corrugated sealing ring 2 are mainly made of ACM;

[0027] It uses high-performance ACM (acrylate rubber), which has good oil resistance, chemical corrosion resistance and excellent mechanical properties, effectively extending the service life of the product and ensuring the safety of the electric drive system.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An end cover sealing ring for an electric drive system of a new energy vehicle, characterized in that, The sealing ring is mainly composed of a sealing base (1) and a corrugated sealing ring (2) which is detachable from the outer periphery of the sealing base (1), and the outer wall of the corrugated sealing ring (2) is provided with a plurality of annular corrugated grooves; The inner wall of the corrugated sealing ring (2) is surrounded and fixed with a plurality of plug-in blocks (3), and the outer wall of the sealing base (1) is provided with plug-in grooves (4) matched with the plug-in blocks (3).

2. The end cover sealing ring for a new energy vehicle electric drive system according to claim 1, characterized in that, The inner wall of the bottom end of the plug-in groove (4) is vertically fixed with a nut seat (5), the bottom end of the plug-in block (3) is provided with an avoiding groove for accommodating the nut seat (5), the top end of the plug-in block (3) is penetrated by a screw (6), and the bottom end of the screw (6) is screwed into the nut seat (5).

3. The end cover sealing ring for new energy vehicle electric drive system according to claim 2, characterized in that, The top end of the plug-in block (3) is also provided with a hidden groove (7), the screw cap of the screw (6) is accommodated in the hidden groove (7), and the top end of the screw cap does not exceed the opening end face of the hidden groove (7).

4. The end cover sealing ring for a new energy vehicle electric drive system according to claim 1, characterized in that, The sealing base (1) and the corrugated sealing ring (2) are mainly made of ACM.

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