Lock-up device for torque converter
US-10030740-B2 · Jul 24, 2018 · US
Fluid transmission device for vehicle
US10288158B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10288158-B2 |
| Application number | US-201615198463-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2016 |
| Priority date | Jul 3, 2015 |
| Publication date | May 14, 2019 |
| Grant date | May 14, 2019 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A fluid transmission device is provided. The device comprises a rotatable case having a rotational axis, coupled to a drive source, and provided therein with a pump shell for integrally rotating with the case and a turbine shell facing the drive source side of the pump shell, a drive force being transmitted between the pump shell and the turbine shell via fluid, and a dynamic vibration absorber having a swing body and for reducing vibration caused by the drive source. The dynamic vibration absorber overlaps with at least one of the pump shell and the turbine shell in an axial direction of the case.
First claim
Opening claim text (preview).
What is claimed is: 1. A fluid transmission device, comprising: a rotatable case having a rotational axis, coupled to a drive source, and provided therein with a pump shell configured to integrally rotate with the case, and a turbine shell facing a drive source side of the pump shell, a drive force being transmitted between the pump shell and the turbine shell via fluid; and a dynamic vibration absorber having a swing body and configured to reduce vibration caused by the drive source, wherein the dynamic vibration absorber overlaps with at least one of the pump shell and the turbine shell in an axial direction of the case, wherein the dynamic vibration absorber is configured inside the case, wherein the dynamic vibration absorber is disposed on an outer circumferential side of the pump shell and the turbine shell, wherein an extension part extending on an outer circumferential side of an outer-most circumferential part of the pump shell is configured on an outer-most circumferential part of the turbine shell, and wherein the dynamic vibration absorber is coupled to an outer circumferential side of the extension part. 2. The fluid transmission device of claim 1 , wherein a bulging part of the pump shell bulges away from the drive source as the pump shell extends circumferentially inward from the outer-most circumferential part thereof, and the case is coupled to the bulging part. 3. The fluid transmission device of claim 2 , further comprising: a lockup clutch that directly couples the pump shell and the turbine shell to each other; and damper springs that reduce the vibration caused by the drive source when the lockup clutch is engaged, wherein the damper springs are disposed on an outer circumferential side of the lockup clutch to overlap with the lockup clutch in the axial direction, and also disposed on a drive source side of the dynamic vibration absorber to overlap with the dynamic vibration absorber in radial directions of the case. 4. The fluid transmission device of claim 1 , further comprising: a lockup clutch that directly couples the pump shell and the turbine shell to each other; and damper springs that reduce the vibration caused by the drive source when the lockup clutch is engaged, wherein the damper springs are disposed on an outer circumferential side of the lockup clutch to overlap with the lockup clutch in the axial direction, and also disposed on the drive source side of the dynamic vibration absorber to overlap with the dynamic vibration absorber in radial directions of the case. 5. A fluid transmission device, comprising: a rotatable case having a rotational axis, coupled to a drive source, and provided therein with a pump shell configured to integrally rotate with the case, and a turbine shell facing a drive source side of the pump shell, a drive force being transmitted between the pump shell and the turbine shell via fluid; and a dynamic vibration absorber having a swing body and configured to reduce vibration caused by the drive source, wherein the dynamic vibration absorber overlaps with at least one of the pump shell and the turbine shell in an axial direction of the case, wherein the dynamic vibration absorber is configured inside the case, wherein the dynamic vibration absorber is disposed on an outer circumferential side of the pump shell and the turbine shell, wherein an extension part extending on the outer circumferential side of the turbine shell is configured on an outer-most circumferential part of the pump shell, and wherein the dynamic vibration absorber is coupled to an outer circumferential side of the extension part. 6. The fluid transmission device of claim 5 , wherein a bulging part of the pump shell bulges away from the drive source as the pump shell extends circumferentially inward from the outer-most circumferential part thereof, and the case is coupled to the bulging part. 7. The fluid transmission device of claim 6 , further comprising: a lockup clutch that directly couples the pump shell and the turbine shell to each other; and damper springs that reduce the vibration caused by the drive source when the lockup clutch is engaged, wherein the damper springs are disposed on an outer circumferential side of the lockup clutch to overlap with the lockup clutch in the axial direction, and also disposed on the drive source side of the dynamic vibration absorber to overlap with the dynamic vibration absorber in radial directions of the case.
Assignees
Inventors
Classifications
Masses mounted with play with respect to driving means thus enabling free movement over a limited range · CPC title
the damper comprising a pendulum · CPC title
Details · CPC title
- F16H45/02Primary
with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title
with more than two discs, e.g. multiple lamellae · CPC title
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Frequently asked questions
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- What does patent US10288158B2 cover?
- A fluid transmission device is provided. The device comprises a rotatable case having a rotational axis, coupled to a drive source, and provided therein with a pump shell for integrally rotating with the case and a turbine shell facing the drive source side of the pump shell, a drive force being transmitted between the pump shell and the turbine shell via fluid, and a dynamic vibration absorber…
- Who is the assignee on this patent?
- Mazda Motor
- What technology area does this patent fall under?
- Primary CPC classification F16H45/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 14 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).