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US 12,510,007 B2Granted
Balancer device for internal combustion engine and balancer device with oil pump
AssigneeHitachi Astemo, Ltd.
InventorsMasatoshi Matsuo, Masafumi Kurita
Life of this patent
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Abstract
Provided is a balancer device for an internal combustion engine, which includes: an upper-side housing to be mounted to an internal combustion engine; a lower-side housing fixed to the upper-side housing; a balancer main body accommodated in a space defined by the upper-side housing and the lower-side housing; and an oil pump fixed at least to the upper-side housing. An end surface portion of the upper-side housing and an end surface portion of the oil pump are mounted in contact with each other, and an end surface portion of the lower-side housing and the end surface portion of the oil pump are mounted to each other so as to define a predetermined gap.
Claims19
A balancer device for an internal combustion engine, the balancer device comprising:
- an upper-side housing to be mounted to an internal combustion engine, and a lower-side housing, which is provided below the upper-side housing when viewed in a direction of gravity and is fixed to the upper-side housing;
- a balancer main body accommodated in a space defined between the upper-side housing and the lower-side housing;
- and
- an oil pump fixed at least to the upper-side housing;
- wherein a pump drive gear and a speed-reduction gear configured to drive the pump drive gear are arranged between the upper-side housing and the oil pump,
- wherein an end surface portion of the upper-side housing and an end surface portion of the oil pump are mounted in contact with each other so as to cover the pump drive gear and the speed-reduction gear, and
- wherein an end surface portion of the lower-side housing and the end surface portion of the oil pump are mounted to each other so as to define a predetermined gap.
4 more elements
A balancer device for an internal combustion engine, the balancer device comprising:
- a first balancer shaft having one end to which a balancer drive gear to be meshed with an engine-side gear rotated by an internal combustion engine and a first gear are fixed, the first balancer shaft having a first balance weight provided adjacent to the first gear;
- a second balancer shaft having one end to which a second gear to be meshed with the first gear is fixed and another end to which a speed-reduction gear to be meshed with a pump drive gear of an oil pump is fixed, the second balancer shaft having a second balance weight provided between the second gear and the speed-reduction gear;
- a lower-side housing on which the first balancer shaft including the balancer drive gear, the first gear, and the first balance weight and the second balancer shaft including the second gear, the second balance weight, and the speed-reduction gear are placed;
- and
- an upper-side housing arranged above the lower-side housing when viewed in a direction of gravity, the upper-side housing being formed in such a shape as to cover the first balancer shaft including the first balance weight, the second balancer shaft including the second balance weight, the speed-reduction gear, and the pump drive gear on their upper side, the upper-side housing being mounted to the lower-side housing,
- wherein, under a state in which the speed-reduction gear is meshed with the pump drive gear with the oil pump being mounted thereto,
- an end surface portion of the upper-side housing and an end surface portion of the oil pump are mounted in contact with each other so as to cover the pump drive gear and the speed-reduction gear on their upper side, and
- an end surface portion of the lower-side housing and the end surface portion of the oil pump are mounted to each other so as to define a predetermined gap for discharging lubricating oil from a space in which the pump drive gear and the speed-reduction gear are arranged.
5 more elements
A balancer device with an oil pump, the balancer device comprising:
- an upper-side housing to be mounted to a lower side of an internal combustion engine;
- a lower-side housing, which is provided below the upper-side housing when viewed in a direction of gravity and is fixed to the upper-side housing;
- a balancer main body accommodated in a space defined between the upper-side housing and the lower-side housing;
- and
- an oil pump fixed to the upper-side housing, the balancer device being provided inside an oil pan of the internal combustion engine,
- wherein a pump drive gear configured to drive the oil pump and a speed-reduction gear configured to drive the pump drive gear are arranged between the upper-side housing and the oil pump,
- wherein an end surface portion of the upper-side housing and an end surface portion of the oil pump are mounted in contact with each other so as to cover the pump drive gear and the speed-reduction gear on their upper side, and
- wherein an end surface portion of the lower-side housing and the end surface portion of the oil pump are mounted to each other so as to define a predetermined gap for discharging lubricating oil from a space in which the pump drive gear and the speed-reduction gear are arranged.
5 more elements
Dependencies are inferred from the claim text.