Motor having breathing hole
First Claim
1. A motor comprising:
- a motor element including a rotation shaft;
a speed reduction element including a rotation speed reduction device and a gear housing, wherein the rotation speed reduction device reduces a rotation speed of the rotation shaft, wherein the gear housing accommodates the rotation speed reduction device, and wherein the speed reduction element is coupled with the motor element; and
a water proof sheet, whereinthe gear housing includes an accommodation portion and a cover,the accommodation portion includes a communication passage and an accommodation concavity,the communication passage is coupled with an inside of the motor element,the communication passage has an accommodation side opening,the accommodation concavity accommodates the rotation speed reduction device,the cover includes a breathing hole,the breathing hole has a cover side opening connecting to the accommodation side opening,the breathing hole couples between the communication passage and an outside of the gear housing,the cover seals an opening of the accommodation concavity,the water proof sheet is disposed between the accommodation side opening and the cover side opening, andthe water proof sheet has water proof property and gas permeability.
1 Assignment
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Accused Products
Abstract
A motor includes: a motor element with a rotation shaft; a speed reduction element having a rotation speed reduction device for reducing a rotation speed and a gear housing for accommodating the reduction device; and a water proof sheet. The gear housing includes: an accommodation portion having a communication passage and an accommodation concavity; and a cover having a breathing hole. The breathing hole has a cover side opening, which connects to an accommodation side opening of the communication passage. An inside of the motor element is connected to an outside of the gear housing through the breathing hole and the communication passage. The cover seals an opening of the accommodation concavity. The water proof sheet having water proof property and gas permeability is disposed between the accommodation side opening and the cover side opening.
17 Citations
10 Claims
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1. A motor comprising:
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a motor element including a rotation shaft; a speed reduction element including a rotation speed reduction device and a gear housing, wherein the rotation speed reduction device reduces a rotation speed of the rotation shaft, wherein the gear housing accommodates the rotation speed reduction device, and wherein the speed reduction element is coupled with the motor element; and a water proof sheet, wherein the gear housing includes an accommodation portion and a cover, the accommodation portion includes a communication passage and an accommodation concavity, the communication passage is coupled with an inside of the motor element, the communication passage has an accommodation side opening, the accommodation concavity accommodates the rotation speed reduction device, the cover includes a breathing hole, the breathing hole has a cover side opening connecting to the accommodation side opening, the breathing hole couples between the communication passage and an outside of the gear housing, the cover seals an opening of the accommodation concavity, the water proof sheet is disposed between the accommodation side opening and the cover side opening, and the water proof sheet has water proof property and gas permeability. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A motor comprising:
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a motor element including a rotation shaft; a speed reduction element including a worm gear and a gear housing, wherein the worm gear reduces a rotation speed of the rotation shaft, wherein the gear housing accommodates the worm gear, and wherein the motor element is mounted on the speed reduction element; and a water proof sheet, wherein the gear housing includes a cover, an accommodation concavity and a communication passage, the accommodation concavity accommodates the worm gear, the cover covers an opening of the accommodation concavity, the communication passage is coupled with an inside of the motor element, the communication passage has an accommodation side opening, the cover includes a breathing hole with a cover side opening, the breathing hole couples between the communication passage and an outside of the gear housing, the water proof sheet is disposed between the accommodation side opening and the cover side opening so that the cover side opening couples with the accommodation side opening, the water proof sheet has water proof property and gas permeability, the breathing hole has a central axis, which is perpendicular to an rotation axis of the rotation shaft, and the communication passage has a central axis, which is perpendicular to the central axis of the breathing hole. - View Dependent Claims (10)
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Specification