A motor and a driver including the motor

Abstract

The present invention relates to an electric motor, comprising: a motor housing, a cavity is formed inside the motor housing, a stator assembly and a rotor assembly are accommodated in the cavity, and both ends of the motor housing have openings; an end cover, the end cover is arranged on one side of the motor housing and is used to close the opening on this side; a flange portion, the flange portion closes the opening on the other side of the motor housing; the rotor assembly has a rotor shaft, one end of the rotor shaft passes through the end cover, and the other end passes through the flange portion; a magnetic ring, the magnetic ring is arranged on the rotor shaft and is located on the side of the end cover away from the motor housing; an output tooth, the output tooth is arranged on the rotor shaft and is located on the side of the flange portion away from the motor housing. The present invention reduces the rotor gear parts, and connects the motor and the gearbox through a flange portion, shortens the length dimension, improves the coaxiality of the motor and the gearbox, improves the installation efficiency of the driver and saves the installation cost.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical transmission, and particularly relates to an electric motor and a driver including the electric motor. Background Art

[0002] In the field of mechanical transmission, an electric motor is a commonly used power source for providing rotational power output. The electric motor can directly drive the terminal component to rotate, or a gearbox can be connected to the output end of the electric motor to change the rotational speed of the electric motor and then transmit the power to the terminal component.

[0003] In the existing connection structure between an electric motor and a gearbox, a motor end cover is provided at one end of the electric motor by means of riveting and fastening, and the electric motor and the flange of the gearbox are generally fixedly connected through a threaded connection device.

[0004] In this structure, the electric motor and the flange are separate components, which results in a large overall length of the driver and a relatively complex installation after connecting the electric motor and the gearbox. Summary of the Invention

[0005] In order to solve the above technical problems to a certain extent, the present invention proposes the following technical solutions.

[0006] An electric motor, comprising:

[0007] An electric motor housing, a cavity is formed inside the electric motor housing, a stator assembly and a rotor assembly are accommodated in the cavity, and both ends of the electric motor housing have openings;

[0008] An end cover, the end cover is arranged on one side of the electric motor housing for closing the opening on this side;

[0009] A flange portion, the flange portion closes the opening on the other side of the electric motor housing;

[0010] The rotor assembly has a rotor shaft, one end of the rotor shaft passes through the end cover, and the other end passes through the flange portion;

[0011] A magnetic ring, the magnetic ring is arranged on the rotor shaft and is located on the side of the end cover away from the electric motor housing;

[0012] An output tooth, the output tooth is arranged on the rotor shaft and is located on the side of the flange portion away from the electric motor housing.

[0013] According to one aspect of the present invention, the magnetic ring and the output tooth are arranged on the rotor shaft by means of riveting.

[0014] According to one aspect of the present invention, a boss is provided on the axial end face of the end cover, which abuts against the end face of the magnetic ring, and a boss is provided on the axial end face of the flange portion, which abuts against the end face of a bearing for supporting the rotor shaft near the output teeth.

[0015] According to one aspect of the present invention, a hole is provided near the opening edge of the motor housing, and this hole forms a metal rib on the motor housing. Corresponding strip-shaped grooves are respectively provided on the end cover and the flange portion.

[0016] According to one aspect of the present invention, a gasket is further provided between the output teeth and a bearing for supporting the rotor shaft near the output teeth.

[0017] According to one aspect of the present invention, a gasket is further provided between the magnetic ring and a bearing for supporting the rotor shaft near the magnetic ring.

[0018] In addition, the present invention also relates to a driver, comprising:

[0019] A gearbox and the above-mentioned motor.

[0020] According to one aspect of the present invention, the gearbox includes a gearbox housing, and the flange portion of the motor connects the motor housing and the gearbox housing.

[0021] According to one aspect of the present invention, the flange portion and the gearbox housing are laser welded.

[0022] The motor obtained according to the above technical solution can reduce the rotor gear parts, thereby saving costs, and by connecting the motor and the gearbox through a flange portion, the length dimension is shortened, the coaxiality of the motor and the gearbox is improved, the installation efficiency of the driver is improved, and the installation cost is saved.

[0023] The motor and driver of the present invention can be applied to occasions such as the tailgate adjustment, sunroof adjustment, and seat horizontal / height / inclination adjustment of an automobile. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The exemplary embodiments of the present invention are described with reference to the accompanying drawings, wherein:

[0025] Figure 1 is an exploded schematic view of the motor of the present invention.

[0026] Figure 2 is a cross-sectional view of the motor of the present invention.

[0027] Figure 3 is a schematic view of the assembled motor of the present invention.

[0028] Figure 4It is a schematic diagram of a gearbox adapted to the motor of the present invention.

[0029] Figure 5 It is a schematic diagram of a driver after the motor and the gearbox of the present invention are assembled.

[0030] All the drawings are only schematic and not necessarily drawn to scale. In addition, they only show those parts necessary for clarifying the present invention, and other parts are omitted or only mentioned. That is, in addition to the components shown in the drawings, the present invention may also include other components. Detailed Description of the Invention

[0031] The technical solution of the present invention will be described in detail below with reference to the drawings.

[0032] See Figure 1 、 Figure 2 and Figure 3 to describe the motor of the present invention. The motor of the present invention includes a motor housing 5, and a cavity is formed inside the housing 5. A stator assembly, a rotor assembly 4, etc. are accommodated in the cavity. The housing can have various shapes, such as cylindrical, prismatic, etc. In the Figure 1 shown schematic embodiment, the housing 5 has a cylindrical structure. Both ends of the housing 5 have openings, one end is closed by an end cover 3, and the other end is closed by a flange portion 6.

[0033] The rotor assembly 4 includes a rotor shaft, one end of which passes through the end cover 3 and is supported in the end cover 3 by, for example, a bearing 10, and the other end passes through the flange portion 6 and is supported in the flange portion 6 by, for example, a bearing 7. A connection portion connected to the speed reducer is provided on the rotor shaft, and this connection portion is shown in the form of an output gear 9 in the Figure 1 . Preferably, a gasket 8 is also provided between the output gear 9 and the bearing 7.

[0034] In addition, a magnetic ring 1 is provided outside the motor end cover 3. Preferably, a gasket 2 is also provided between the magnetic ring 1 and the bearing 10.

[0035] As can be seen from the Figure 3 , as a feasible implementation manner, both the motor end cover 3 and the flange portion 6 are fixedly provided on the motor housing 5. A hole is provided near the opening edge of the motor housing 5, and this hole forms a metal rib on the motor housing 5. Correspondingly, corresponding strip-shaped grooves are respectively provided on the motor end cover 3 and the flange portion 6. During assembly, the rib on the motor housing 5 is riveted and pressed into the strip-shaped groove, thereby clamping and fixing the motor end cover 3 and the flange portion 6 at both ends of the motor housing 5.

[0036] Further, the magnetic ring 1 and the output tooth 9 respectively arranged at both ends of the motor rotor shaft can be firmly connected to the rotor shaft by means such as riveting. To prevent the axial movement of the rotor shaft, on the one hand, a boss is provided on the axial end face of the motor end cover 5, and the end face of this boss abuts against the end face of the magnetic ring 1, thereby restricting the axial movement of the rotor shaft in one direction; on the other hand, a boss is also provided on the axial end face of the flange portion 6, and the end face of this boss abuts against the end face of the bearing 7 that supports the rotor shaft near the output tooth 9, thereby restricting the movement of the rotor shaft in the other axial direction. Therefore, the simultaneously arranged magnetic ring 1 and output tooth 9 can play the role of axially fixing the rotor shaft.

[0037] The above has been combined with Figures 1 - 3 to make a detailed description of the structure of the motor of the present invention. Next, in combination with Figure 4 and Figure 5 the structure of the gearbox adapted to the present invention and the driver including the motor of the present invention will be described.

[0038] Refer to Figure 4 , as a schematic illustration, the gearbox 100 adapted to the motor of the present invention has a gearbox housing 101. In Figure 4 , the state where the flange portion 6 of the motor is assembled with the gearbox housing 101 is shown. A gear transmission mechanism is accommodated in the gearbox housing 101. Since the specific structure of the gear transmission mechanism is not the focus of the present invention, it will not be elaborated in detail here. Preferably, the gearbox housing 101 can be made of plastic material. The flange portion 6 can also be made of plastic material, and of course, other suitable materials such as stainless steel can also be used. Both ends of the flange portion 6 are respectively connected to the gearbox housing 101 of the gearbox 100 and the outer shell 5 of the motor.

[0039] As a preferred embodiment, the flange portion 6 is connected to the gearbox housing 101 of the gearbox 100 by laser welding.

[0040] Figure 5 shows the structure after the motor and the gearbox in the present invention are assembled. When connecting, the motor is connected to the gearbox 100 through the flange portion 6. The motor output tooth 9 assembled on the rotor shaft of the motor meshes with the input gear of the gearbox 100, thereby outputting the rotational power of the motor to the gearbox 100, and the two form an integral driver to achieve power output.

[0041] The present invention has been clearly and completely described with reference to the above illustrative embodiments. Those skilled in the art should understand that various other embodiments can be conceived by modifying the disclosed technical solutions without departing from the spirit and scope of the present invention. These embodiments should be understood to fall within the scope determined by the claims of the present invention and any equivalent technical solutions thereof.

Claims

1. A motor, comprising: A motor housing (5), a cavity is formed inside the motor housing (5), a stator assembly and a rotor assembly (4) are accommodated in the cavity, and both ends of the motor housing (5) have openings; An end cover (3), the end cover (3) is arranged on one side of the motor housing (5) for closing the opening on this side; A flange portion (6), the flange portion (6) closes the opening on the other side of the motor housing (5); The rotor assembly (4) has a rotor shaft, one end of the rotor shaft passes through the end cover (3), and the other end passes through the flange portion (6); It is characterized in that it further comprises: A magnetic ring (1), the magnetic ring (1) is arranged on the rotor shaft and is located on the side of the end cover (3) away from the motor housing (5); An output tooth (9), the output tooth (9) is arranged on the rotor shaft and is located on the side of the flange portion (6) away from the motor housing (5), On the axial end face of the end cover (3), there is a boss that abuts against the end face of the magnetic ring (1), and on the axial end face of the flange portion (6), there is a boss that abuts against the end face of a bearing (7) used to support the rotor shaft near the output tooth (9); A hole is arranged near the opening edge of the motor housing (5), and this hole forms a metal rib on the motor housing (5), and corresponding strip-shaped grooves are respectively arranged on the end cover (3) and the flange portion (6).

2. The motor according to claim 1, wherein The magnetic ring (1) and the output tooth (9) are arranged on the rotor shaft by riveting.

3. The motor according to claim 1, characterized in that A gasket (8) is further arranged between the output tooth (9) and a bearing (7) used to support the rotor shaft near the output tooth (9).

4. The electric machine according to any one of claims 1 to 3, characterized in that A gasket (2) is further arranged between the magnetic ring (1) and a bearing (10) used to support the rotor shaft near the magnetic ring (1).

5. A driver, comprising: A gearbox (100), It is characterized in that it further comprises: The motor according to any one of claims 1-4.

6. According to the driver of claim 5, it is characterized in that The gearbox (100) includes a gearbox housing (101), and the flange portion (6) of the motor connects the housing (5) of the motor and the gearbox housing (101).

7. The driver according to claim 6, characterized in that, The flange portion (6) and the gearbox housing (101) are laser welded.

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