Sound blocking enclosures with antiresonant membranes
US-11021870-B1 · Jun 1, 2021 · US
Soundproofing device for transmission
US11318895B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11318895-B2 |
| Application number | US-201916728132-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 27, 2019 |
| Priority date | Jan 8, 2019 |
| Publication date | May 3, 2022 |
| Grant date | May 3, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A soundproofing device for a transmission according to the present disclosure is provided to transmit the power of one or more prime movers (for example, internal combustion engine and electric motor). The soundproofing device includes a Helmholtz resonator including: a wall that forms a Helmholtz resonance chamber; and an opening formed in the wall so as to cause the Helmholtz resonance chamber to communicate with the outside of the Helmholtz resonance chamber. The wall includes a transmission case that accommodates the transmission and a housing of a component mounted on the transmission (for example, PCU housing). The Helmholtz resonance chamber is formed between the transmission case and the housing.
First claim
Opening claim text (preview).
What is claimed is: 1. A soundproofing device for a transmission to transmit a power of one or more prime movers, comprising a Helmholtz resonator including: a wall that forms a Helmholtz resonance chamber; and an opening formed in the wall so as to cause the Helmholtz resonance chamber to communicate with an outside of the Helmholtz resonance chamber, wherein the wall includes a transmission case that accommodates the transmission and a housing of a component mounted on the transmission, and wherein the Helmholtz resonance chamber is formed between the transmission case and the housing. 2. The soundproofing device according to claim 1 , wherein the one or more prime movers includes an electric motor, and wherein the component is a power control unit configured to control the electric motor. 3. The soundproofing device according to claim 1 , wherein the component is an oil cooler configured to cool oil that lubricates the transmission. 4. The soundproofing device according to claim 1 , wherein the transmission includes a plurality of gear positions, and wherein the component is a shift actuator configured to switch the gear position. 5. The soundproofing device according to claim 1 , wherein the housing includes an enclosure that protrudes, in a hollow prismatic or cylindrical shape, toward the transmission case, wherein the Helmholtz resonance chamber is defined by the enclosure, and wherein the opening is formed between the enclosure and the transmission case opposed to the enclosure. 6. The soundproofing device according to claim 1 , wherein a length of the Helmholtz resonance chamber in a first direction in which the transmission case and the housing are opposed to each other is shorter than a length of the Helmholtz resonance chamber in a second direction perpendicular to the first direction.
Assignees
Inventors
Classifications
Housings · CPC title
Helmholtz resonators · CPC title
Controlled cooling or heating of lubricant; Temperature control therefor · CPC title
- G10K11/172Primary
using resonance effects · CPC title
- B60R13/0838Primary
for engine compartments · CPC title
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Frequently asked questions
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- What does patent US11318895B2 cover?
- A soundproofing device for a transmission according to the present disclosure is provided to transmit the power of one or more prime movers (for example, internal combustion engine and electric motor). The soundproofing device includes a Helmholtz resonator including: a wall that forms a Helmholtz resonance chamber; and an opening formed in the wall so as to cause the Helmholtz resonance chambe…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G10K11/172. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 03 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).