阅读说明：本技术 电动马达和离合器 (Electric motor and clutch ) 是由 B·维亚内洛 于 2020-02-21 设计创作，主要内容包括：描述了一种电动马达-离合器组件(10),其中,所述电动马达包括转子(20a、20b),该转子包括形成马达的外部表面的一部分的自由表面(24),离合器(40)包括摩擦盘(42),并且摩擦盘(42)轴向可移动地安装以选择性地接触所述自由表面(24)。(An electric motor-clutch assembly (10) is described, wherein the electric motor comprises a rotor (20a, 20b) comprising a free surface (24) forming part of an outer surface of the motor, the clutch (40) comprises friction discs (42), and the friction discs (42) are axially movably mounted to selectively contact the free surface (24).)

1. An electric motor-clutch assembly (10) in which,

the electric motor comprises a rotor (20a, 20b) comprising a free surface (24), the free surface (24) forming part of an outer surface of the motor,

the clutch (40) includes a friction disc (42), and

the friction disc (42) is axially movably mounted to selectively contact the free surface (24).

2. The assembly of claim 1, wherein the rotor is a disk.

3. An assembly according to claim 2, wherein the rotor comprises one side on which permanent magnets (22) are mounted and an opposite side constituting the free surface (24).

4. The assembly of any preceding claim, comprising:

a first rotor (20a) and a second rotor (20b), the first and second rotors being as defined in any one of the preceding claims, and respectively

A first clutch disc and a second clutch disc, the first clutch disc and the second clutch disc being clutch discs as defined in any one of the preceding claims,

the two rotors are positioned axially on opposite sides of the motor such that free surfaces (24) of the two rotors face in opposite directions.

5. A vehicle comprising an electric motor-clutch assembly as defined in any preceding claim.

6. A vehicle according to claim 5, wherein the clutch is connected to an internal combustion engine or to a mechanical drive shaft adapted to transmit torque to the wheels.

7. A vehicle according to claim 5 or 6, wherein the electric motor comprises two said rotors, the first clutch being connected to an internal combustion engine and the second clutch being connected to a mechanical drive shaft adapted to transmit torque to a wheel.

8. Method for constructing an electric motor-clutch assembly (10), having the following steps:

a clutch disc (42) is axially movably mounted such that it can selectively contact a portion of an outer surface of the motor, wherein the portion belongs to a rotor (20a, 20b) of the motor.

Technical Field

The present invention relates to electric motors and associated clutches, and to methods for constructing electric motors and associated clutches. The invention also relates to an electric (electrically assisted) vehicle having two or more wheels, such as a Segway/balance car, a car or a tractor or an electric bicycle.

Background

Hybrid vehicles equipped with an electric motor and an internal combustion engine are known, in which the two motors can be selectively connected to each other or to a mechanical transmission to transmit a driving torque to the wheels via two disk clutches. Disc clutches, while mature in technology, significantly increase the longitudinal dimension of the motor-clutch assembly, contrary to the trend toward miniaturization. Other disadvantages are the higher costs due to the higher number of parts.

It would be highly advantageous to be able to reduce the size of the electric motor-clutch assembly due to the weight, volume and number of components.

Disclosure of Invention

The main object of the present invention is to improve this situation of the prior art.

Another object of the present invention is to form a method for constructing an electric motor-clutch assembly having a smaller longitudinal dimension and/or a lower cost.

Another object of the present invention is to create an electric motor-clutch assembly with a smaller longitudinal dimension and/or lower cost.

These and other objects are achieved by the content defined in the appended independent claims; further advantageous features are defined in the dependent claims.

One aspect of the present invention is an electric motor-clutch assembly, wherein:

the electric motor comprises a rotor comprising a free surface forming part of an outer surface of the motor,

the clutch includes a clutch disc, an

The clutch disc is axially movably mounted for selective contact with the free surface.

Referring to the exemplary drawings, a general advantage of the present invention is that the outer sides of the rotors 20a and 20b of the motor can be utilized. A clutch function of coupling the side surface 24 with the disk unit and the disk push units 40a and 40b can be implemented on the side surface 24 without inserting an additional disk.

In a variant, the rotor is a disc, for convenience of construction and adaptation to the clutch disc.

In a variant, the rotor comprises a side on which the permanent magnets are mounted and an opposite side constituting said free surface.

In one variant, the electric motor comprises:

first and second rotors as hereinbefore defined, and corresponding

A first friction disk and a second friction disk as defined above,

the two rotors are axially positioned on opposite sides of the motor such that the free surfaces of the two rotors face in opposite directions. In particular, the two rotors are integral with each other or selectively connectable to each other to be integral with each other by means of a controllable connection device.

Another aspect of the invention is a vehicle comprising an electric motor-clutch assembly as defined above.

In one variant, the clutch is connected to the internal combustion engine.

In one variant, the clutch is connected to a mechanical transmission shaft adapted to transmit the driving torque to the wheel.

In a variant, the motor comprises said two rotors and the first clutch is connected to the internal combustion engine and the second clutch is connected to a mechanical transmission shaft adapted to transmit the driving torque to the wheels.

One aspect of the invention is a method of constructing an electric motor clutch assembly having the steps of:

the clutch disc is axially movably mounted such that the clutch disc can selectively contact a portion of an outer surface of the motor, wherein the portion belongs to a rotor of the motor.

Drawings

Further advantages will become apparent from the following description relating to preferred examples of embodiments, in which:

fig. 1 shows a three-dimensional view of an electric motor-clutch assembly.

Detailed Description

The electric motor-clutch assembly is formed by the electric motor 10 and the two clutches 40a, 40 b.

The motor 10 has a stator housing or stator 12, and a first rotor 20a and a second rotor 20b integrated with each other are rotatably mounted in the stator housing or stator 12.

In this example, the rotors 20a, 20b are in the form of two discs and are, for example, identical. The rotors 20a, 20b are provided with respective free surfaces 24, the free surfaces 24 forming part of the outer surface of the housing 12, the rotors 20a, 20b being rotatable about the same X axis and being located on opposite sides of the housing 12, such that the free surfaces 24 of the two rotors 20a, 20b face in opposite directions.

Each clutch 40a, 40b comprises a clutch disc 42 mounted axially displaceable along the X axis by known means to selectively contact the respective free surface 24 of the rotor 20a, 20b facing the clutch disc 42.

Each clutch 40a, 40b also includes a protective cover 90 that is securable to the housing 12.

According to a preferred variant, each rotor 20a, 20b comprises, on the side opposite to the surface 24, a (for example permanent) magnet 22 adapted to interact magnetically with a component of the stator 12.

The clutches 40a, 40b may be controlled independently of each other.

Advantageously, the electric motor-clutch assembly 10 may be integrated into a vehicle. In particular, in a vehicle, the clutch 40a is connected to an internal combustion engine (not shown) and the clutch 40b is connected to a mechanical transmission shaft 60, the mechanical transmission shaft 60 being able to transmit a driving torque to, for example, wheels or a shift gearbox (gear of a shifter).

When the clutch 40a connects the disc 20a to the internal combustion engine, the internal combustion engine may rotate the electric motor 10, otherwise the internal combustion engine remains isolated from the shaft 60 and from the motor 10.

In such a configuration, if the clutch 40b is not engaged, the internal combustion engine may, for example, rotate the rotors 20a, 20b to generate electrical energy to recharge an on-board battery (not shown). Alternatively, the motor 10 may be controlled to act as an active flywheel for the internal combustion engine, with the advantage of filtering variations in torque, for example.

When the clutch 40b connects the disk 20b to the shaft 60, the motor 10 may drive the shaft 60 to rotate, otherwise the motor 10 remains isolated from the shaft 60. In this configuration, the motor 10 may transmit torque to the shaft 40.

When each clutch 40a, 40b is connected to a respective disc 20a, 20b, both the motor 10 and the internal combustion engine can transmit torque to the shaft 60.

The motor 10 may also include a single motor and associated clutch.