CN214412455U

CN214412455U - Driving motor

Info

Publication number: CN214412455U
Application number: CN202022989260.XU
Authority: CN
Inventors: 董鸿博; 杨学威
Original assignee: Aiways Automobile Shanghai Co Ltd
Current assignee: Aiways Automobile Shanghai Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-10-15
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to a driving motor, including casing, lid and sealing washer, realize sealedly by the sealing washer between casing and the lid. Moreover, the end face of the cover body or the shell is provided with a positioning column. The sealing ring comprises a hard framework and an elastic sealing layer covered on the hard framework. The hard skeleton can provide better support, thereby leading the whole sealing ring to have fixed shape and difficult deformation. Therefore, the shape of the seal ring can be better matched with the end faces of the housing and the cover body during assembly. Moreover, the positioning columns are matched with the positioning holes, the sealing ring can be positioned on the cover body or the shell in advance, and therefore the sealing ring can be prevented from being misplaced relative to the cover body or the shell before the sealing ring is pressed tightly. Therefore, the sealing ring can be kept stable between the shell and the cover body all the time, and the sealing performance of the driving motor is obviously improved.

Description

Driving motor

Technical Field

The utility model relates to an electric automobile technical field, in particular to driving motor.

Background

The most central component of an electric vehicle is a driving motor. In order to ensure the reliability of the electric vehicle, the sealing performance of each joint surface of the motor housing is also more required. At present, the most common sealing method is to install a seal ring or a seal strip on the sealing surface. During assembly, the sealing ring or the sealing strip needs to be manually positioned on the joint surface of the motor shell and then compressed. However, the sealing ring or the sealing strip is soft and not easy to shape, and the sealing ring is easy to be dislocated relative to the joint surface, so that the sealing performance is damaged.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a driving motor capable of significantly improving sealing performance in view of the above problems.

A drive motor comprising:

the shell is of a hollow structure with two open ends;

the cover body is arranged at two ends of the shell in a covering mode, and positioning columns are arranged on the end faces of the cover body or the shell; and

the sealing ring is clamped between the end face of the shell and the end face of the cover body and comprises an annular hard framework and an elastic sealing layer covering the surface of the hard framework, and a positioning hole clamped with the positioning column is formed in the hard framework.

In one embodiment, the hard framework is a metal frame or a plastic frame, and the elastic sealing layer is a rubber layer or a silica gel layer.

In one embodiment, a support lug protruding in the radial direction of the sealing ring is formed on the hard framework, and the positioning hole is formed in the support lug.

In one embodiment, the plurality of support lugs are arranged at equal intervals along the extension direction of the hard framework, and each support lug is provided with one positioning hole.

In one embodiment, the hard skeleton is in an annular plate-shaped structure.

In one embodiment, the portable electronic device further comprises a fastening bolt, wherein the fastening bolt penetrates through the cover body and the shell and is in threaded connection with the cover body and the shell.

In one embodiment, the housing and the covers at two ends are matched to form a cooling flow channel, an overflowing hole axially penetrating through the hard framework and the elastic sealing layer is formed in the sealing ring, and the cooling flow channel penetrates through the overflowing hole.

In one embodiment, the plurality of cooling flow channels are distributed at intervals along the circumferential direction of the shell, and the plurality of overflowing holes are arranged at intervals along the extending direction of the hard skeleton and are arranged in one-to-one correspondence with the plurality of cooling flow channels.

In one embodiment, the positioning column is disposed on an end surface of the cover, a mating hole is formed in a position of the end surface of the housing corresponding to the positioning column, and the positioning column is disposed in the mating hole.

In one embodiment, the inner edge of the cover is formed with an annular projection that extends into the housing.

Above-mentioned driving motor realizes sealed between casing and the lid by the sealing washer, and the sealing washer includes stereoplasm skeleton and elastic sealing layer, and the stereoplasm skeleton can provide better support to make the whole fixed shape, non-deformable of having of sealing washer. Therefore, the shape of the seal ring can be better matched with the end faces of the housing and the cover body during assembly. Moreover, the positioning columns are matched with the positioning holes, the sealing ring can be positioned on the cover body or the shell in advance, and therefore the sealing ring can be prevented from being misplaced relative to the cover body or the shell before the sealing ring is pressed tightly. Therefore, the sealing ring can be kept stable between the shell and the cover body all the time, and the sealing performance of the driving motor is obviously improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of a driving motor according to a preferred embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the drive motor shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a sealing ring in the driving motor shown in FIG. 1;

fig. 4 is a partial cross-sectional view of the seal ring shown in fig. 3.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, a driving motor 100 according to a preferred embodiment of the present invention includes a housing 110, a cover 120, and a sealing ring 130.

The housing 110 is a hollow structure with both ends open. Specifically, the housing 110 is generally a metal cylindrical structure, and the interior of the housing 110 may be used to mount a stator, a rotor, and the like. The cover 120 covers two ends of the housing 110, so as to cooperate with the housing 110 to form the motor cavity 101. The motor chamber 101 is used to accommodate components such as coils, and therefore, it is necessary to maintain good sealing performance. Therefore, the seal ring 130 is used to seal between the case 110 and the cover 120. Specifically, the seal ring 130 is sandwiched between the end surface of the case 110 and the end surface of the cover 120. The number of the covers 120 is two. Therefore, at least two seal rings 130 are provided. The two covers 120 may have the same structure and may be divided into a front cover and a rear cover. In addition, one of the covers 120 may also be a reducer case in the powertrain.

In this embodiment, the inner edge of the cover 120 is formed with an annular protrusion 121, and the annular protrusion 121 protrudes into the housing 110. The annular protrusion 121 may serve to facilitate alignment of the cover 120 with the housing 110. Moreover, the presence of the annular projection 121 allows a partial overlap of the cover 120 when assembled with the housing 110, thus contributing to the improved tightness of the coupling.

The end surface of the cover 120 or the housing 110 is provided with a positioning post 121. The positioning post 121 may be integrally formed with the cover 120 or the housing 110, and may be matched with the hole and groove structure. Specifically, in the present embodiment, the positioning column 121 is disposed on the end surface of the cover 120.

Referring to fig. 3 and 4, the sealing ring 130 includes a hard skeleton 131 and an elastic sealing layer 132. The hard skeleton 131 is annular. The shape of the hard frame 131 matches the shape of the opening of the housing 110, and is generally circular. The elastic sealing layer 132 covers the surface of the hard frame 131. The elastic sealing layer 132 may be fixed to the hard frame 131 by assembling, or may be directly injection-molded and bonded by injection molding.

The hard skeleton 131 is formed of a material having high hardness, has high mechanical strength and hardness, is not easily deformed, and can support the elastic sealing layer 132. The hard frame 131 is easily deformed by compression, and thus, the gap between the joint surfaces is filled to achieve sealing. The hard skeleton 131 can provide better support for the elastic sealing layer 132. Therefore, the seal ring 130 has high strength as a whole, and can maintain a fixed shape and be hardly deformed. During assembly, the shape of the sealing ring 130 does not need to be adjusted multiple times to match the end surface shapes of the housing 110 and the cover 120. Specifically, in this embodiment, the hard frame 131 is a metal frame or a plastic frame, and the elastic sealing layer 132 is a rubber layer or a silicone layer.

In the present embodiment, the hard skeleton 131 has an annular plate-like structure. That is, when the sealing ring 120 is clamped, the hard frame 131 may be substantially flat toward both side surfaces of the housing 110 and the cover 120. Therefore, the elastic sealing layer 132 may be in surface contact with the end surfaces of the case 110 and the cover 120. Thus, the sealing performance can be improved.

Furthermore, a positioning hole 1311 for holding the positioning post 111 is formed on the hard frame 131. The positioning post 111 is matched with the positioning hole 1311, so that the sealing ring 130 can be pre-fixed before being pressed, and the sealing ring 130 is prevented from being dislocated relative to the shell 110 or the cover 110, so that the sealing ring 130 is more convenient to mount.

Further, the packing 130 can maintain the stable assembling position between the case 110 and the cover 120, and is not likely to be deviated. Therefore, the sealing performance of the driving motor 100 is better. Furthermore, since there is no deviation in the position of the seal ring 130, it is not easily damaged during the pressing process. Therefore, after the sealing ring 130 is removed in the repairing process, the sealing ring can be reused when being assembled again, so that unnecessary waste of materials is avoided.

In the present embodiment, the hard frame 131 is formed with a support 1312 protruding in the radial direction of the seal ring 130, and the positioning hole 1311 is opened in the support 1312.

The support lug 1312 is located outside the hard frame 131, and the elastic sealing layer 132 may not be covered on the support lug 1312. Therefore, the positioning hole 1311 does not penetrate through the elastic sealing layer 132. Therefore, the integrity of the elastic sealing layer 132 is not affected by the opening of the positioning hole 1311, and the sealing effect of the sealing ring 130 is better.

Further, in the present embodiment, a plurality of lugs 1312 are provided at equal intervals along the extending direction of the hard frame 131, and each lug 1312 is provided with one positioning hole 1311. The positioning holes 1311 can be matched with the positioning posts 121 at corresponding positions, so that the stability of the sealing ring 130 is better when the sealing ring 130 is pre-fixed.

In addition, in the present embodiment, a matching hole (not shown) is formed in a position of the end surface of the housing 110 corresponding to the positioning post 121, and the positioning post 121 is inserted into the matching hole.

On one hand, the matching hole matches with the positioning post 121, which can play a role in positioning the housing 110 and the cover 120. On the other hand, when the positioning post 121 is inserted into the mating hole, the positioning post 121 cannot be pulled out from the positioning hole 1311. Therefore, even if there is severe vibration during the use of the driving motor 100, the sealing ring 130 can maintain the stability of the assembling position, thereby further improving the sealing performance of the driving motor 100.

Referring to fig. 2 again, in the present embodiment, the driving motor 100 further includes a fastening bolt 140, and the fastening bolt 140 is disposed through the cover 120 and the casing 110 and is screwed with the casing 110 and the cover 120 at two ends of the casing 110.

The fastening bolts 140 may connect and fix the case 110 and the covers 120 at both ends of the case 110. Meanwhile, the pressing force applied to the seal ring 130 can also be adjusted by controlling the tightening degree of the fastening bolt 140. The fastening bolts 140 may be a plurality and distributed around the circumference of the housing 110 so as to apply pressing force to the sealing ring 130 from various angles.

The performance of the driving motor 100 is greatly affected by the heat dissipation performance of the driving motor, and therefore, most of the driving motors are cooled by water cooling. In the present embodiment, the housing 110 and the covers 120 at both ends cooperate to form the cooling channel 102.

Specifically, strip-shaped channels (not shown) may be formed in the side walls of the casing 110 and the cover 120, and the openings of the channels are located on the end surfaces of the casing 110 and the cover 120. When the cover 120 covers the opening of the housing 110, the channels on the housing 110 and the cover 120 are butted to form the cooling flow path 102. A cooling fluid, such as water, may be circulated through the cooling channels 102 to accelerate heat dissipation.

Further, referring to fig. 3 again, in the present embodiment, the seal ring 130 is formed with an overflowing hole 103 axially penetrating through the hard skeleton 131 and the elastic sealing layer 132, and the cooling channel 102 passes through the overflowing hole 103.

With the arrangement, only a single sealing ring 130 is needed to be arranged, so that the motor cavity 101 can be sealed, and the cooling flow channel 102 can also be sealed.

It should be noted that in other embodiments, if the seal ring 130 is not provided with the overflowing hole 103, two seal rings 130 having different inner diameters and arranged concentrically need to be provided. Furthermore, the cooling flow passage 102 needs to pass through the gap between the two seal rings 130.

In order to further improve the heat dissipation effect, a plurality of cooling channels 102 are formed, and the plurality of cooling channels 102 are distributed at intervals along the circumferential direction of the housing 110. Correspondingly, a plurality of overflowing holes 103 are formed in the sealing ring 130, and the plurality of overflowing holes 103 are arranged at intervals along the extending direction of the hard skeleton 131 and are arranged in one-to-one correspondence with the plurality of cooling channels 102.

In the driving motor 100, the sealing ring 130 seals between the casing 110 and the cover 120, the sealing ring 130 includes the hard skeleton 131 and the elastic sealing layer 132, and the hard skeleton 131 can provide better support, so that the sealing ring 130 has a fixed shape and is not easy to deform. Therefore, the shape of the seal ring 130 can be more appropriately matched to the end surfaces of the case 110 and the cover 120 at the time of assembly. Furthermore, the positioning post 121 is engaged with the positioning hole 1311, so that the seal ring 130 can be positioned on the cover 120 or the housing 110 in advance, and the seal ring 130 can be prevented from being misaligned with respect to the cover 120 or the housing 110 before the seal ring 130 is pressed. Therefore, the sealing ring 130 can be always kept stable between the housing 110 and the cover 120, so that the sealing performance of the driving motor 100 is remarkably improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A drive motor, comprising:

the shell is of a hollow structure with two open ends;

2. The driving motor according to claim 1, wherein the hard frame is a metal frame or a plastic frame, and the elastic sealing layer is a rubber layer or a silicone layer.

3. The drive motor according to claim 1, wherein a lug protruding in a radial direction of the seal ring is formed on the hard frame, and the positioning hole is provided in the lug.

4. The driving motor as claimed in claim 3, wherein a plurality of the supporting lugs are arranged at equal intervals along the extending direction of the hard frame, and each of the supporting lugs is provided with one of the positioning holes.

5. The drive motor of claim 1, wherein the rigid backbone is an annular plate-like structure.

6. The drive motor according to claim 1, further comprising a fastening bolt that is inserted through the cover and the housing and is screwed to the cover and the housing.

7. The driving motor as claimed in claim 1, wherein the housing is fitted with covers at both ends to form a cooling flow passage, an overflowing hole axially penetrating the hard skeleton and the elastic sealing layer is formed on the sealing ring, and the cooling flow passage passes through the overflowing hole.

8. The drive motor according to claim 7, wherein a plurality of the cooling flow passages are distributed at intervals in a circumferential direction of the housing, and a plurality of the overflowing holes are arranged at intervals in an extending direction of the hard skeleton and are arranged in one-to-one correspondence with the plurality of the cooling flow passages.

9. The driving motor as claimed in claim 1, wherein the positioning post is disposed on an end surface of the cover, a mating hole is formed on the end surface of the housing corresponding to the positioning post, and the positioning post is inserted into the mating hole.

10. The drive motor of claim 1, wherein the cover body inner side edge is formed with an annular projection extending into the housing.