Sealing structure of vehicle motor

Abstract

The utility model discloses a sealing structure of a vehicle motor, and relates to the technical field of motor shells. The technical scheme of the utility model comprises a shell and an end cover arranged on the end face of the shell, the end cover comprises an outer frame and an inner cover arranged in the outer frame; the outer frame is opposite to the end face of the shell. A groove is formed in the face, facing the shell, of the outer frame. The shape of the groove is matched with the inner contour of the end face of the shell. And the in-situ curing sealant is filled in the groove. According to the sealing structure of the vehicle motor provided by the utility model, the groove is arranged on the outer frame of the end cover, and the in-situ curing sealant is filled in the groove for connecting and sealing the end cover and the shell. And the part management number is reduced, and the production efficiency is improved. And through the design of the groove, the accidents such as glue overflowing in the gluing process are effectively avoided, no additional working procedure is added, and the production progress is accelerated. And the selected in-situ curing sealant has good performance and is suitable for sealing the end cover.

Description

Technical Field

[0001] The utility model relates to the technical field of motor casings, and more specifically, to a sealing structure for a vehicle motor. Background Art

[0002] An end cover is a rear cover installed behind a casing such as a motor. Its sealing performance is of great significance. It can prevent moisture, dust and other impurities from entering the interior of the motor, protecting the normal operation of the motor. If moisture, dust and other impurities enter the interior of the motor, it will cause corrosion of electrical components and a decline in insulation performance. In severe cases, it may even cause damage to the motor. In addition, the entry of dust and other impurities will also block the heat dissipation channels, affecting the heat dissipation effect and causing the motor to overheat. Therefore, the sealing performance of the end cover plays a crucial role in motor maintenance.

[0003] In the prior art, the sealing structure of the end cover usually adopts an end cover gasket, an end cover sealing ring or a sealant temporarily coated on the end face of the end cover, etc. However, gaskets and sealing rings have high costs and long production cycles, which are not conducive to the timely delivery of products. At the same time, they also increase the number of parts management. The sealant temporarily coated on the end face of the end cover is prone to glue overflow during the glue application process, increasing subsequent processes. Summary of the Utility Model

[0004] In view of this, the utility model provides a sealing structure for a vehicle motor, which can effectively improve the sealing performance of the end cover, save processes and improve production efficiency.

[0005] The utility model provides a sealing structure for a vehicle motor. The vehicle motor includes a casing and an end cover disposed on the end face of the casing. The end cover includes an outer frame and an inner cover disposed within the outer frame;

[0006] The outer frame faces the end face of the casing; the outer contour of the outer frame is adapted to the outer contour of the end face of the casing; both the outer frame and the end face of the casing have a number of opposing protruding portions, and bolt holes are provided in the protruding portions;

[0007] A groove is provided on the side of the outer frame facing the casing;

[0008] The shape of the groove is adapted to the inner contour of the end face of the casing;

[0009] The groove is filled with an in-situ cured sealant, also known as CIPG (Cured-In-Place Gasket) sealant, which is a high-elasticity, high-temperature resistant, corrosion-resistant and glue material with excellent sealing performance.

[0010] In a possible implementation, the groove is continuously arranged along the entire circumference of the outer frame.

[0011] In a possible implementation, the width of the groove is not less than 1 / 3 of the minimum value of the width of the outer frame.

[0012] In a possible implementation, along the projection direction, the depth of the groove is not less than 13% of the thickness of the outer frame.

[0013] In a possible implementation, the roughness of the inner surface of the groove is 1.6 - 3.2.

[0014] In a possible implementation, the groove includes several with coincident geometric centers and the same contours.

[0015] In a possible implementation, a first mounting boss is provided on the surface of the inner cover facing the housing, and a first through hole is provided at one end of the first mounting boss facing away from the inner cover;

[0016] A second mounting boss is provided on the surface of the bottom of the housing facing the end cover, and a second through hole is provided at one end of the second mounting boss facing the end cover;

[0017] A convex ring is provided at the connection of the inner cover and the first mounting boss.

[0018] In a possible implementation, a number of reinforcing ribs that intersect and connect with each other are provided on the surface of the inner cover facing the housing.

[0019] In a possible implementation, a number of reinforcing ribs are evenly spaced along the circumference of the side wall of the first mounting boss.

[0020] In a possible implementation, it is characterized in that a number of annular and / or radial reinforcing ribs are provided at the bottom of the inner wall of the housing.

[0021] When the end cover is arranged on the end face of the housing, the bolt connects the end cover and the housing together through the opposite bolt holes.

[0022] Compared with the prior art, the sealing structure of the vehicle motor provided by the present utility model has at least achieved the following beneficial effects:

[0023] In the embodiment provided by the present utility model, the sealing structure of the vehicle motor opens a groove on the outer frame of the end cover opposite to the end face of the housing, and fills the groove with an in-situ curing sealant for the connection and sealing of the end cover and the housing. On the one hand, the use of gaskets or sealing rings is avoided, reducing the number of parts management, which is beneficial to improving production efficiency. On the other hand, through the design of the groove, events such as sealant overflow during the glue application process are effectively avoided, no additional processes are added, and it is also beneficial to accelerating the production progress. The selected in-situ curing sealant has good performance and is suitable for the sealing of the end cover. The implementation provided by the present utility model makes the assembly of the end cover more convenient, reduces the error rate, and the sealing is more controllable in the mass production state, and the cost is optimized.

[0024] Of course, any product implementing the present utility model does not necessarily need to achieve all the above-described technical effects simultaneously.

[0025] Other features and advantages of the present utility model will become clear from the following detailed description of exemplary embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model.

[0027] Figure 1 A top view structural schematic diagram of an end cap provided by the present utility model;

[0028] Figure 2 A front view structural schematic diagram of an end cap provided by the present utility model;

[0029] Figure 3 A three-dimensional structural schematic diagram of a housing provided by the present utility model;

[0030] Figure 4 A combined structural schematic diagram of an end cap and a housing provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model or its application or use.

[0033] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0034] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0035] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] Refer to Figure 1 、 Figure 3 and Figure 4As shown in the figure, among which, Figure 1 is a top view structural schematic diagram of an end cover provided by the present utility model; Figure 3 is a three-dimensional structural schematic diagram of a housing provided by the present utility model; Figure 4 is a combined structural schematic diagram of an end cover and a housing provided by the present utility model. The vehicle motor includes a housing 200 and an end cover 100 disposed on the end face of the housing 200. After all the components inside the motor are assembled, it is necessary to connect and seal the end cover 100 and the housing 200 to prevent moisture, dust or other impurities from entering the motor interior and affecting the performance of the motor. In the sealing structure of a vehicle motor provided by an embodiment of the present utility model, the end cover 100 includes an outer frame 10 and an inner cover 20 disposed inside the outer frame 10;

[0037] The outer frame 10 faces the end face of the housing 200; the outer contour of the outer frame 10 is adapted to the outer contour of the end face of the housing 200; both the outer frame 10 and the end face of the housing 200 have a number of opposing convex portions 12, and bolt holes 121 are provided in the convex portions 12;

[0038] It can be understood that the end cover 100 includes an outer frame 10 and an inner cover 20 disposed inside the outer frame 10. The outer frame 10 faces the end face of the housing 200, and the inner cover 20 faces the cavity of the housing 200. Further, the edges of the outer frame 10 and the end face of the housing 200 are not regular but have a number of convex portions 12, and the convex portions 12 of the two are correspondingly arranged. The outer contour of the outer frame 10 is adapted to the outer contour of the end face of the housing 200. Along the projection direction, the outer frame 10 at least falls within the coverage range of the end face of the housing 200. Further, bolt holes 121 are provided in the convex portions 12 for fixedly connecting the end cover 100 and the housing 200.

[0039] Further, a groove 11 is provided on the surface of the outer frame 10 facing the housing 200;

[0040] The shape of the groove 11 is adapted to the inner contour of the end face of the housing 200;

[0041] In-situ curing sealant 111 is filled in the groove 11, and the in-situ curing sealant 11 bonds the end cover 100 and the housing 200. It can be understood that a groove 11 is provided on the surface of the outer frame 10 facing the housing 200, and in-situ curing sealant 111 is filled in the groove 11. Since the inner contour of the end face of the housing 200 is not regular, the shape of the groove 11 is also not regular, but is adapted to the inner contour of the end face of the housing 200.

[0042] When assembling the housing 100 and the end cover 100, place the end cover 100 horizontally with the side of the groove 11 facing up, and heat the in-situ curing sealant 111 between 140°C and 160°C for 20 - 25 minutes. The heating temperature of the in-situ curing sealant 111 can specifically be 150°C. Then fill the in-situ curing sealant 111 into the groove 11 and install it on the end face of the housing 200. Since the outer frame 10 of the end cover 100 is opposite to the end face of the housing 200, the groove 11 opened thereon is also opposite to the end face of the housing 200. When the groove 11 is filled with the in-situ curing sealant 111 and then connected to the housing 200, after the in-situ curing sealant 111 cures, it can bond the end cover 100 and the housing 200 together( Figure 1 and Figure 3 the black filled part in

[0043] Note that the filling amount of the in-situ curing sealant 111 should not be too much higher than the depth of the groove 11 to avoid glue overflow.

[0044] 1. Excellent sealing performance: Adopting a combination of conductive particles and insulating polymers to form a colloidal material with conductive and insulating properties, it has good filling and adhesion properties, can completely fill and seal the encapsulation space, and prevent the penetration of liquids, gases, and solid particles.

[0045] 2. Strong adaptability: Suitable for various shapes and sizes of encapsulation requirements, can be flexibly applied to different materials and surfaces, such as metals, plastics, ceramics, etc., as well as complex component structures.

[0046] 3. Excellent high-temperature and corrosion resistance: By selecting a combination of high-temperature resistant and corrosion-resistant materials, it can maintain stable performance in high-temperature environments and resist the erosion of corrosive liquids or gases.

[0047] 4. Strong heat dissipation: According to the heat dissipation requirements of the equipment, add heat-conducting particles to the colloidal material to provide good heat conduction performance, which helps to optimize the heat dissipation management of energy equipment

[0048] 5. Reliable electrical connection and insulation performance: Provide a colloidal material with conductive and insulating properties for the connection and isolation of electronic components, ensure reliable electrical connection, and effectively isolate electronic components

[0049] 6. Environmentally friendly and sustainable: The materials used are usually environmentally friendly, which helps to promote the sustainable development of the energy industry and the popularization and utilization of clean energy.

[0050] In summary, when sealing a vehicle motor, first fill the in-situ curing sealant 111 into the groove 10 formed in the end cover 100, and then install the end cover 100 on the end face of the housing 200 and align them. After the in-situ curing sealant 111 solidifies, drive bolts into the corresponding bolt holes 121, and after driving a preset distance, press the end cover 100 and the housing 200 tightly to achieve effective connection and sealing between the end cover 100 and the housing 200.

[0051] In the embodiment provided by the present utility model, the sealing structure of the vehicle motor is to form a groove on the outer frame of the end cover opposite to the end face of the housing, and fill the in-situ curing sealant in the groove for connecting and sealing the end cover and the housing. On the one hand, the use of gaskets or sealing rings is avoided, reducing the number of parts to be managed, which is beneficial to improving production efficiency. On the other hand, through the design of the groove, events such as sealant overflow during the gluing process are effectively avoided, no additional processes are added, and it is also beneficial to speed up the production progress. The selected in-situ curing sealant has good performance and is suitable for sealing the end cover. The implementation method provided by the present utility model makes the assembly of the end cover more convenient, reduces the error rate, and the sealing is more controllable in the mass production state, and the cost is optimized.

[0052] In an alternative embodiment, refer to Figure 1 or Figure 2, wherein, Figure 2 is a front view structural schematic diagram of an end cover provided by the present utility model. The groove 11 is continuously arranged along the perimeter of the outer frame 10.

[0053] It can be understood that due to the sealing requirements, the groove 11 for filling the in-situ curing sealant 111 is continuous, so as to ensure that there is in-situ curing sealant 111 for connection and sealing at any position between the end cover 100 and the housing 200. It should be noted that the shape of the groove 11 is not regular, but is adapted to the shape of the inner contour of the housing 200. However, regardless of the shape of the groove 11, it is necessary to ensure that it is continuous along the perimeter of the outer frame 10 and is arranged end to end.

[0054] In an alternative embodiment, continue to refer to Figure 1 or Figure 2 shown, the width of the groove 11 is not less than 1 / 3 of the minimum value of the width of the outer frame 10.

[0055] It should be noted that the end cover 100 is generally circular, but the edge of its outer frame, that is, the edge of the outer frame 10, is not regular. The width of the groove 11 provided on the same end cover 100 is continuous and consistent. Therefore, at the position where the width of the outer frame 10 is the smallest, the width of the groove 11 is not less than 1 / 3 of the minimum value of the width of the outer frame 10, so as to ensure that the in-situ cured sealant 111 filled in the groove 11 can have sufficient contact with the end face of the housing 200, thereby ensuring the sealing performance between the end cover 100 and the housing 200.

[0056] In an alternative embodiment, with reference to Figure 2 as shown, along the projection direction, the depth of the groove 11 is not less than 13% of the thickness of the outer frame 10.

[0057] It can be understood that the depth of the groove 11 is not less than 13% of the thickness of the outer frame 10. Exemplarily, the thickness of the outer frame 10 is 9 ± 0.1, and the depth of the groove 11 is 1.2 ± 0.05. The limitation of the depth of the groove 11 can ensure the filling amount of the in-situ cured sealant 111, thereby ensuring the stability of the connection between the end cover 100 and the housing 200 and the effectiveness of the seal.

[0058] In an alternative embodiment, the roughness of the inner surface of the groove 11 is 1.6 - 3.2.

[0059] It can be understood that the inner surface of the groove 11 should not be too smooth, but should have a certain roughness. Exemplarily, its roughness can be 1.6 - 3.2. In this way, when the in-situ cured sealant 111 is filled in the groove 11, it can penetrate into the rough surface, that is, it can increase the contact surface with the groove 11 and increase the bonding strength.

[0060] In an alternative embodiment, the groove 11 includes several with the same geometric center and the same contour.

[0061] It can be understood that the groove 11 can be provided with one or several. When several grooves 11 are provided, their contours are the same and their geometric centers are the same, and they are arranged from the inside to the outside. The number of the grooves 11 and the width of each groove 11 can be set according to the size of the outer frame 10. Setting multiple grooves 11, that is, performing multiple seals with the in-situ cured sealant 111, can improve the sealing effectiveness of the end cover 100 and reduce the possibility of seal failure.

[0062] In an alternative embodiment, with reference to Figure 1 and Figure 3 as shown, the structures of the end cover 100 and the housing 200 can be: a first mounting boss 21 is provided on the side of the inner cover 20 facing the housing, and a first through hole 211 is opened at one end of the first mounting boss 21 facing away from the inner cover;

[0063] On one side of the bottom of the housing 200 facing the end cover, there is a second mounting boss 201, and a second through hole 2011 is opened at one end of the second mounting boss 201 facing the end cover.

[0064] It can be understood that the inner cover 20 is provided with a first mounting boss 21 pointing to the housing 200, and the bottom of the housing 200 is provided with a second upper mounting boss 201 pointing to the end cover 100. The first mounting boss 21 and the second mounting boss 201 are separately provided with a first through hole 211 and a second through hole 2011. The first mounting boss 21 and the second mounting boss 201 are used for fixedly installing motor components in the housing 200 and the end cover 100, and the through holes are used for the transmission structure to extend out. It should be noted that the through holes also need to be sealed.

[0065] Furthermore, a convex ring 22 is provided at the connection of the inner cover 20 and the first mounting boss 21. On the side of the inner cover 20 facing the housing 200, there are a number of reinforcing ribs that are cross-connected to each other. A number of reinforcing ribs are evenly spaced along the circumference of the side wall of the first mounting boss 21. At the bottom of the inner wall of the housing 200, there are a number of annular and / or radial reinforcing ribs.

[0066] It can be understood that the convex ring 22 and the reinforcing ribs provided on the inner cover 20, as well as the reinforcing ribs on the inner wall of the housing 200, are all used to increase the strength of the outer shell of the vehicle motor. The shape of the reinforcing ribs can be annular and / or linear, and the distribution method can be uniform distribution, cross distribution, etc. The present utility model does not make specific limitations on this.

[0067] In summary, the sealing structure of the vehicle motor provided by the present utility model has at least achieved the following beneficial effects:

[0068] In the embodiment provided by the present utility model, the sealing structure of the vehicle motor opens a groove on the outer frame of the end cover opposite to the end face of the housing, and fills in-situ curing sealant in the groove for the connection and sealing of the end cover and the housing. On the one hand, the use of gaskets or sealing rings is avoided, reducing the number of parts management and being beneficial to improving production efficiency. On the other hand, through the design of the groove, events such as sealant overflow during the glue application process are effectively avoided, no additional processes are added, and it is also beneficial to accelerating the production progress. The selected in-situ curing sealant has good performance and is suitable for the sealing of the end cover. The implementation method provided by the present utility model makes the assembly of the end cover more convenient, reduces the error rate, and the sealing is more controllable in the mass production state, and the cost is optimized.

[0069] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. A sealing structure for a motor for a vehicle, characterized in that: include: A shell and an end cover disposed on an end surface of the shell; The end cover comprises an outer frame and an inner cover arranged in the outer frame; The outer frame is opposite to the end face of the shell; the outer contour of the outer frame is matched with the outer contour of the end face of the shell; the end face of the outer frame and the shell both have a plurality of opposite raised portions, and the raised portions are provided with bolt holes; A groove is formed on one side of the outer frame facing the shell; The shape of the groove is adapted to the inner contour of the end surface of the shell; The groove is filled with a curing-in-place sealant; the curing-in-place sealant bonds the end cover and the shell.

2. The sealing structure of the vehicle motor according to claim 1, characterized in that: The grooves are continuously arranged along a circumference of the outer frame.

3. The sealing structure of a vehicle motor according to claim 1, characterized in that: The width of the groove is not less than 1 / 3 of the minimum width of the outer frame.

4. The sealing structure of a motor for a vehicle according to claim 1, characterized in that: Along the projection direction, the depth of the groove is not less than 13% of the thickness of the outer frame.

5. The sealing structure of a motor for a vehicle according to claim 1, characterized in that: The roughness of the inner surface of the groove is 1.6-3.

2.

6. The sealing structure of a motor for a vehicle according to claim 1, characterized in that: The grooves include a plurality of grooves whose geometric centers coincide with each other and whose contours are the same.

7. The sealing structure of a motor for a vehicle according to claim 1, characterized in that: A first mounting boss is provided on a side of the inner cover facing the housing, and a first through hole is provided on an end of the first mounting boss facing away from the inner cover; A second mounting boss is provided on one side of the bottom of the shell facing the end cover, and a second through hole is provided on one end of the second mounting boss facing the end cover; A convex ring is provided at the connection between the inner cover and the first mounting boss.

8. The sealing structure of the vehicle motor according to claim 7, characterized in that: A plurality of reinforcing ribs cross-connected with each other are arranged on one side of the inner cover facing the shell.

9. The sealing structure of a motor for a vehicle according to claim 7, characterized in that: A plurality of reinforcing ribs are evenly spaced around a circumference of the side wall of the first mounting boss.

10. The sealing structure of a motor for a vehicle according to claim 7, characterized in that: The bottom of the inner wall of the shell is provided with a plurality of annular and / or radial reinforcing ribs.

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