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US 12,624,745 B2Granted
Eccentric oscillation type speed reducer
AssigneeSumitomo Heavy Industries, Ltd.
InventorSebastian Markert
Life of this patent
Estimating the term…
Abstract
An eccentric oscillation type speed reducer includes: an eccentric body; an external gear capable of being oscillated by the eccentric body; an internal gear that meshes with the external gear; and a carrier capable of being synchronized with an axial rotation component of the external gear, in which one of the internal gear and the carrier configures at least a part of a fixed body that is fixed to an external member, the fixed body includes a first ring portion, a second ring portion that is provided to be separated from the first ring portion in a radial direction and is fixed to the external member, and a distortion generating portion provided between the first ring portion and the second ring portion, and a strain sensor is installed in the distortion generating portion.
Claims7
An eccentric oscillation type speed reducer comprising:
- an eccentric body;
- an external gear capable of being oscillated by the eccentric body;
- an internal gear that meshes with the external gear;
- a carrier capable of being synchronized with an axial rotation component of the external gear;
- and
- a circuit board to which a strain sensor is electrically connected,
- wherein one of the internal gear and the carrier configures at least a part of a fixed body that is fixed to an external member,
- the fixed body includes a first ring portion, a second ring portion that is provided to be separated from the first ring portion in a radial direction and is fixed to the external member, and a distortion generating portion provided between the first ring portion and the second ring portion,
- the strain sensor is installed in the distortion generating portion,
- the distortion generating portion includes a first recessed portion that accommodates the strain sensor, and
- the circuit board includes a first protrusion portion that protrudes into the first recessed portion and is connected to the strain sensor.
8 more elements
An eccentric oscillation type speed reducer comprising:
- an eccentric body;
- an external gear capable of being oscillated by the eccentric body;
- an internal gear that meshes with the external gear;
- a carrier capable of being synchronized with an axial rotation component of the external gear;
- and
- a circuit board to which a strain sensor is electrically connected,
- wherein one of the internal gear and the carrier configures at least a part of a fixed body that is fixed to an external member,
- the fixed body includes a first ring portion, a second ring portion that is provided to be separated from the first ring portion in a radial direction and is fixed to the external member, and a distortion generating portion provided between the first ring portion and the second ring portion,
- the strain sensor is installed in the distortion generating portion, and
- one of the first ring portion and the second ring portion includes a second recessed portion that accommodates at least a part of the circuit board.
7 more elements
An eccentric oscillation type speed reducer comprising:
- an eccentric body;
- an external gear capable of being oscillated by the eccentric body;
- an internal gear that meshes with the external gear;
- a carrier capable of being synchronized with an axial rotation component of the external gear;
- and
- a circuit board to which a strain sensor is electrically connected,
- wherein one of the internal gear and the carrier configures at least a part of a fixed body that is fixed to an external member,
- the fixed body includes a first ring portion, a second ring portion that is provided to be separated from the first ring portion in a radial direction and is fixed to the external member, and a distortion generating portion provided between the first ring portion and the second ring portion,
- the strain sensor is installed in the distortion generating portion, and
- the circuit board includes an annular portion that faces one of the first ring portion and the second ring portion in an axial direction, and a first protrusion portion that protrudes in the radial direction from the annular portion and is electrically connected to the strain sensor.
7 more elements
An eccentric oscillation type speed reducer comprising:
- an eccentric body;
- an external gear capable of being oscillated by the eccentric body;
- an internal gear that meshes with the external gear;
- a carrier capable of being synchronized with an axial rotation component of the external gear;
- and
- a circuit board to which a strain sensor is electrically connected,
- wherein one of the internal gear and the carrier configures at least a part of a fixed body that is fixed to an external member,
- the fixed body includes a first ring portion, a second ring portion that is provided to be separated from the first ring portion in a radial direction and is fixed to the external member, and a distortion generating portion provided between the first ring portion and the second ring portion,
- the strain sensor is installed in the distortion generating portion,
- the distortion generating portion includes a plurality of pillar portions provided at intervals in a circumferential direction, and
- the circuit board includes a second protrusion portion that protrudes to be located between the pillar portions adjacent to each other when viewed in an axial direction.
8 more elements
An eccentric oscillation type speed reducer comprising:
- an eccentric body;
- an external gear capable of being oscillated by the eccentric body;
- an internal gear that meshes with the external gear;
- a carrier capable of being synchronized with an axial rotation component of the external gear;
- and
- a casing provided outside the external gear in a radial direction,
- wherein one of the internal gear and the carrier configures at least a part of a fixed body that is fixed to an external member,
- the fixed body includes a first ring portion, a second ring portion that is provided to be separated from the first ring portion in the radial direction and is fixed to the external member, and a distortion generating portion provided between the first ring portion and the second ring portion,
- a strain sensor is installed in the distortion generating portion,
- the other of the internal gear and the carrier configures at least a part of an output body that outputs rotation,
- a main bearing is disposed between the output body and the fixed body,
- the distortion generating portion is provided at a location different from a load transmission pathway extending from the output body to the external member via the main bearing and the fixed body,
- at least a part of the fixed body is configured by the casing and the carrier, and
- the distortion generating portion is provided in the carrier.
11 more elements
Dependencies are inferred from the claim text.