TWI712250B - Motor housing and motor - Google Patents

Abstract

The present invention relates to a motor housing, which includes a main body and an end cover. The main body includes: a flange arranged at one end of the main body with a plurality of bolt holes; a rear end surface located at the other end of the main body; It extends between the flange and the rear end surface, wherein the step opening is arranged at the inner periphery of the side surface near the flange and a plurality of heat dissipation fins are arranged on the outer surface of the side surface; the cavity is surrounded by the side surface and the rear end surface, and , The inner diameter of the step port is greater than the inner diameter of the cavity; the end cap includes: a mounting part configured to fit into the step port and a groove provided on the periphery thereof; and a sealing ring installed in the groove and connected to the step The mouth fits to seal the cavity. The present invention also relates to a motor including the above-mentioned motor housing. The motor housing of the present invention is simple in structure, easy to manufacture, and convenient to install, and can reduce motor manufacturing procedures, reduce manufacturing costs and improve reliability while providing the motor with good heat dissipation performance.

Description

Motor housing and motor

The present invention relates to a motor mechanical structure, and more specifically, to a motor housing having an integrated heat dissipation structure. The present invention also relates to a motor including the above-mentioned motor housing.

It is known that motors on vehicles such as motorcycles and scooters often have a structure as shown in FIG. 1. Wherein, the motor 100 includes an end cover 110 and a main body 120. The main body 120 is typically attached to the end cap 110 by a plurality of bolts 140. The stator and rotor (not shown) of the motor are provided in the main body 120, and the rotating shaft 130 is supported on the end cover 110. In addition, a plurality of electrodes 111 are provided on the side of the end cap 110.

FIG. 2 shows the cross-sectional structure of the main body 120. Wherein, the main body 120 includes: a flange 121, which is provided at one end of the main body 120 and has a plurality of bolt holes 121a; a rear end surface 123, which is located at the other end of the main body 120; The rear end surfaces 123 extend between and have a relatively smooth outer surface; and a cavity 120a, which is surrounded by the side surface 122 and the rear end surface 123, is used to accommodate the stator and the rotor.

However, in the existing motor design, the main body 120 is usually made of cast iron. In order to ensure the heat dissipation performance of the motor, it is also necessary to install an aluminum radiator outside the main body 120. The radiator usually has a ring structure, or is composed of two or more arc-shaped halves, and the outer periphery of the radiator has a protruding ring structure to facilitate the heat dissipation of the motor. The radiator typically needs to be fixed to the main body 120, for example by a plurality of bolts 140, and attached to the vehicle body structure or other structures. During this process, scratches may occur between the radiator and the side surface, and additional fixing operations increase manufacturing costs. In addition, the bolt also brings the risk of loosening and falling off.

Therefore, it is desirable to provide a motor housing and a motor including the motor housing, which can solve at least one of the above-mentioned problems.

An object of the present invention is to provide a motor housing with an integrated heat dissipation structure. Another object of the present invention is to provide a motor including the above-mentioned motor housing.

The object of the present invention is achieved by the following technical solutions: a motor housing, which includes: a main body, which includes: a flange arranged at one end of the main body, and with a plurality of bolt holes; The other end of the main body; the side surface, which extends between the flange and the rear end surface, wherein the step opening is provided at the inner periphery of the side surface near the flange, and a plurality of heat dissipation fins are provided on the outer surface of the side surface; the cavity, which Surrounded by a side surface and a rear end surface, wherein the inner diameter of the step port is greater than the inner diameter of the cavity; and an end cap, which includes: a mounting portion configured to fit into the step port and a groove provided on the periphery thereof; and a seal The ring is installed in the groove and cooperates with the step opening to seal the cavity.

Optionally, the inner diameter of the step opening is larger than the outer diameter of the side surface.

Optionally, the step opening is provided on one of the plurality of heat dissipation fins.

Optionally, the outer surface of the side surface is provided with a plurality of heat dissipation fins, and the plurality of heat dissipation fins are arranged parallel to each other and cover at least a part of the outer surface of the side surface.

Optionally, a plurality of annular protrusions are constructed to extend perpendicular to the outer surface of the side surface.

Optionally, the main body is constructed to be made by casting.

A motor comprising: the above-mentioned motor housing; a stator and a rotor, which are arranged in a cavity; and a rotating shaft, one end of which is supported on an end cover and the other end of which is supported on a rear end surface, wherein the rotor is mounted on the rotating shaft .

Optionally, a bearing seat for supporting the rotating shaft is provided on the rear end surface.

Optionally, the bearing seat is constructed to protrude into the cavity.

Optionally, the rear end face and the side face are constructed integrally.

The motor housing of the present invention has the advantages of simple structure, easy manufacturing, convenient installation, etc., and can reduce motor manufacturing procedures, reduce manufacturing costs, and improve reliability while providing the motor with good heat dissipation performance.

100‧‧‧Motor

110‧‧‧end cap

111‧‧‧electrode

120‧‧‧Main body

120a‧‧‧cavity

121‧‧‧Flange

121a‧‧‧Bolt hole

122‧‧‧ side

123‧‧‧Back

130‧‧‧Shaft

140‧‧‧Bolt

200‧‧‧Motor

210‧‧‧End cap

211‧‧‧electrode

212‧‧‧Installation Department

212a‧‧‧Groove

220‧‧‧Main body

220a‧‧‧cavity

221‧‧‧Flange

221a‧‧‧Bolt hole

221b‧‧‧Step mouth

222‧‧‧Side

222a‧‧‧Radiating Fins

223‧‧‧Back end

223a‧‧‧Bearing seat

230‧‧‧Shaft

240‧‧‧Bolt

240a‧‧‧Bolt

250‧‧‧Seal ring

The present invention will be further described in detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be As a limitation on the scope of the invention. In addition, unless otherwise specified, the drawings are only intended to conceptually represent the composition or configuration of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

Fig. 1 is a perspective view of a prior art motor.

Figure 2 is a partial cross-sectional view of a prior art motor.

Fig. 3 is a partial perspective view of an embodiment of the main body of the motor housing of the present invention.

Fig. 4 is a cross-sectional view of the embodiment shown in Fig. 3.

Figure 5 is a perspective view of an embodiment of the end cap of the present invention.

Fig. 6 is a perspective view of an embodiment of the seal ring of the present invention.

Fig. 7 is a perspective view of an embodiment of the motor of the present invention.

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the scope of protection claimed by the present invention.

First of all, it should be noted that the azimuth terms such as top, bottom, upwards, downwards, etc. mentioned in this article are defined relative to the directions in the drawings. They are relative concepts and can therefore be based on them. It varies with different positions and different practical conditions. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

In addition, it should also be pointed out that for any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the drawings, these technical features (or their equivalents) Continue to combine between things) to obtain other embodiments of the present invention that are not directly mentioned herein.

It should be noted that in different drawings, the same element symbols represent the same or substantially the same elements.

3 is a partial perspective view of an embodiment of the main body of the motor housing of the present invention, and FIG. 4 is a cross-sectional view of the embodiment shown in FIG. 3. Wherein, the main body 220 includes: a flange 221, which is arranged at one end of the main body 220 and has a plurality of bolt holes 221a; a rear end surface 223, which is located at the other end of the main body 220; a side surface 222, which is located at the flange 221 and Extending between the rear end surfaces 223, wherein the outer surface of the side surface 222 is provided with a plurality of heat dissipation fins 222a; and a cavity 220a, which is surrounded by the side surface 222 and the rear end surface 223, is used to accommodate the stator and the rotor.

Wherein, a step opening 221b is provided at the inner periphery of the side surface 222 near the flange 221, and the flange 221, the rear end surface 223 and the side surface 222 are constructed as an integrally formed one.

Optionally, the inner diameter of the step opening 221b is larger than the inner diameter of the cavity 220a.

Optionally, the inner diameter of the step opening 221b is larger than the outer diameter of the side surface 222.

Optionally, the step opening 221b is provided on one of the plurality of heat dissipation fins 222a.

Alternatively, the main body 220 may be made of aluminum.

Alternatively, the main body 220 may be made by casting.

Optionally, a bearing seat 223a is formed on the side of the rear end surface 223 facing the cavity 220a for supporting one end of the rotating shaft and its bearing not shown.

Optionally, six bolt holes 221a are provided on the flange 221.

Optionally, the diameter of the main body 220 is approximately 129 mm.

Optionally, the side surface 222 and the heat dissipation fin 222a are formed integrally.

Optionally, a plurality of heat dissipation fins 222a are arranged parallel to each other and cover at least a part of the outer surface of the side surface 222. In the illustrated embodiment, the plurality of heat dissipation fins 222 a extend from the flange 221 to the rear end surface 223, and the plurality of heat dissipation fins 222 a are constructed to be substantially perpendicular to the outer surface of the side surface 222.

Figure 5 is a perspective view of an embodiment of the end cap of the present invention. Wherein, the end cover 210 includes a mounting portion 212, which is configured to fit into the step opening 221b, and has a groove 212a on its periphery. Wherein, the end cover 210 is attached to the flange 221 by a plurality of first bolts 240.

Fig. 6 is a perspective view of an embodiment of the seal ring of the present invention. Wherein, the sealing ring 250 is configured to be installed in the groove 212 a and cooperate with the step opening 221 b to achieve a sealed connection between the step opening 221 b and the end cover 210.

Fig. 7 is a perspective view of an embodiment of the motor of the present invention. Wherein, the motor 200 includes: a main body 220 as described above; a stator and a rotor (not shown), which are arranged in the cavity 220a of the main body 220; and a rotating shaft 230, one end of which is supported on the end cover 210 and the other end It is supported on the rear end surface 223, wherein the rotor is mounted on the rotating shaft 230.

Optionally, a plurality of electrodes 211 are arranged side by side on the side of the end cover 210.

Optionally, as shown in the figure, the end cover 210 is attached to the flange 221 through two first bolts 240, and the motor 200 is attached to a vehicle structure or other structures through four second bolts 240a.

Optionally, a bearing seat 223a for supporting the rotating shaft 230 is provided on the rear end surface 223.

Optionally, the bearing seat 223a is configured to protrude into the cavity 220a.

Optionally, the rear end surface 223 and the side surface 222 are constructed to be integrally formed.

During installation, the stator, rotor, iron core, bearing and other motor components of the motor are first placed into the cavity 220a through the opening. Then, the end cover 210 is attached to the flange 221 with a plurality of bolts 240 so that the rotating shaft 230 protrudes from the hole in the end cover 210. In the installation of the motor of the present invention, the step of fixing the heat dissipation ring to the motor housing is omitted.

The motor housing and the motor of the present invention have an integrated heat dissipation structure, which not only facilitates the heat dissipation of the motor during operation, but also does not require additional installation procedures, thereby reducing costs and improving efficiency. In addition, the integrated heat dissipation structure does not require bolts to be fixed, thereby reducing the risk of bolts falling off.

In addition, by using the motor housing of the present invention, there is no need to separately manufacture the heat dissipation ring, thereby reducing the manufacturing procedure of the motor and reducing the cost.

Optionally, the motor housing and the motor of the present invention can be cooled by air cooling.

The motor housing and the motor of the present invention can be used for electric bicycles, electric vehicles, electric roller skates, etc., and can also be applied to other products.

This specification discloses the present invention with reference to the accompanying drawings, and also enables those skilled in the art to implement the present invention, including manufacturing and using any device or system, selecting appropriate materials, and using any combined method. The scope of the present invention is defined by the claimed technical solution, and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the claimed technical solution, or such other examples include equivalent structural elements that are not substantially different from the literal language of the claimed technical solution, such other instances shall It is considered to be within the protection scope determined by the technical solution claimed by the present invention.

220‧‧‧Main body

220a‧‧‧cavity

221‧‧‧Flange

221a‧‧‧Bolt hole

222a‧‧‧Radiating Fins

Claims (9)

A motor housing, comprising: a main body (220), which includes: a flange (221) arranged at one end of the main body (220) and provided with a plurality of bolt holes (221a); a rear end surface ( 223), which is located at the other end of the main body (220); a side surface (222), which extends between the flange (221) and the rear end surface (223), wherein a step opening (221b) is provided At the inner periphery of the side surface (222) near the flange (221), and a plurality of heat dissipation fins (222a) are provided on the outer surface of the side surface (222); and a cavity (220a), which is formed by The side surface (222) and the rear end surface (223) are surrounded and formed, wherein the inner diameter of the step opening (221b) is larger than the inner diameter of the cavity (220a); the end cover (210) includes: a mounting portion (212), which is constructed to fit into the step opening (221b) and is provided with a groove (212a) on its periphery; and a sealing ring (250) which is installed in the groove (212a), And cooperate with the step opening (221b) to seal the cavity (220a); wherein the inner diameter of the step opening (221b) is larger than the outer diameter of the side surface (222). The motor housing according to claim 1, wherein the step opening (221b) is provided on one of the plurality of heat dissipation fins (222a). The motor housing according to claim 2, wherein the outer surface of the side surface (222) is provided with a plurality of heat dissipation fins (222a), and the plurality of heat dissipation fins (222a) are arranged parallel to each other, And cover at least a part of the outer surface of the side surface (222). The motor housing according to claim 3, wherein the plurality of heat dissipation fins (222a) are configured to extend perpendicular to the outer surface of the side surface (222). The motor housing according to any one of claims 1-4, wherein the main body is constructed to be made by casting. An electric motor (200), comprising: a motor housing according to any one of claims 1-5; a stator and a rotor, which are arranged in the cavity (220a); and a rotating shaft (230), one end of which is It is supported on the end cover (210), and the other end is supported on the rear end surface (223), wherein the rotor is mounted on the rotating shaft (230). The electric motor (200) according to claim 6, wherein a bearing seat (223a) for supporting the rotating shaft (230) is provided on the rear end surface (223). The electric motor (200) according to claim 7, wherein the bearing housing (223a) is configured to protrude into the cavity (220a). The electric motor (200) according to claim 8, wherein the rear end surface (223) and the side surface (222) are constructed to be integrally formed.

Images