# US 11,306,791 B2 · Driving apparatus

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- Number: US 11,306,791 B2
- Document ID: US11306791B2
- Status: Granted
- Kind: B2
- Application number: 17/004,472
- Filed: 2020-08-27
- Published: 2020-12-17
- Granted: 2022-04-19
- Earliest claimed: 2018-03-02
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Naoki Matsunaga; Tsuyoshi Yoshigasaki; Kenta Kohigashi
- Web page: https://patentgrep.com/patent/US11306791B2

## CPC

- F16D 67/02: Clutch-brake combinations
- B60K 17/02: characterised by arrangement, location, or kind of clutch
- B60K 17/043: {Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel}
- B60T 1/062: {acting on transmission parts}
- F16D 11/14: with clutching members movable only axially (F16D11/02, F16D11/08 take precedence)
- F16D 55/02: with axially-movable discs or pads pressed against axially-located rotating members
- F16D 65/18: adapted for drawing members together {, e.g. for disc brakes}
- H02K 7/006: {Structural association of a motor or generator with the drive train of a motor vehicle}
- H02K 7/102: with friction brakes
- H02K 7/112: with friction clutches in combination with brakes
- H02K 7/116: with gears
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- B60K 7/0007: {the motor being electric}
- B60K 2007/0038: {the motor moving together with the wheel axle}
- B60K 2007/0092: {the motor axle being coaxial to the wheel axle}
- F16D 2011/002: {using an external and axially slidable sleeve for coupling the teeth of both coupling components together}
- F16D 2023/141: {characterised by using a fork; Details of forks}
- F16D 2121/14: Mechanical
- F16D 2125/28: Cams; Levers with cams
- F16D 2125/36: Helical cams, Ball-rotating ramps
- F16D 2125/64: Levers
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A driving apparatus 100 includes a motor 20 that generates drive power and power transmission units 30, 40, and 50 that transmit drive power of the motor 20 to an output shaft 60. The power transmission units 30, 40, and 50 include a clutch mechanism 30 that switches between a state where the motor 20 and the output shaft 60 are connected and a state where the motor 20 and the output shaft 60 are disconnected, and a brake mechanism 40 that brakes rotation of the output shaft 60, and the clutch mechanism 30 is arranged so as to overlap the brake mechanism 40 in a radial direction.

## Claims

### Claim 1

A driving apparatus comprising:
a motor that generates drive power; and
a power transmission unit that transmits drive power of the motor to an output shaft,
wherein the power transmission unit includes a clutch mechanism that switches between a state where the motor and the output shaft are connected and a state where the motor and the output shaft are disconnected, a brake mechanism that brakes rotation of the output shaft, and a deceleration mechanism that converts a torque of the motor, and transmits a resultant torque to the output shaft, and
wherein the deceleration mechanism includes an input shaft that is connected to or disconnected from a motor shaft of the motor by the clutch mechanism,
the clutch mechanism includes an inner clutch that is directly connected to the motor shaft, an outer clutch that is directly connected to the input shaft, and a sleeve that moves between the inner clutch and the outer clutch,
the outer clutch overlaps the brake mechanism in the radial direction, and
the sleeve overlaps the inner clutch and the outer clutch in the radial direction, so as to be movable between the inner clutch and the outer clutch.

### Claim 2 (depends on 1)

The apparatus according to claim 1, wherein
the brake mechanism includes a brake plate coupled to the input shaft and a movable plate that presses the brake plate, and
the outer clutch overlaps an inner diameter portion of the movable plate in the radial direction.

### Claim 3 (depends on 1)

The apparatus according to claim 1, wherein
a protruding portion provided in an end portion of the inner clutch is inserted into a recessed portion provided in an end portion of the outer clutch, and the inner clutch and the outer clutch overlap in the radial direction.

### Claim 4 (depends on 1)

The apparatus according to claim 1, wherein
a spline that engages with a spline formed on an outer periphery portion of the inner clutch and a spline formed on an outer periphery portion of the outer clutch is formed in an inner periphery portion of the sleeve, and
a tapered portion is formed in an end face of the spline of the inner clutch, and a tapered portion is formed in an end face of the spline of the sleeve.