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Hand-held machine tool having an electronically commutated electric motor as direct drive
US10189140B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10189140-B2 |
| Application number | US-201515317370-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 14, 2015 |
| Priority date | Jun 17, 2014 |
| Publication date | Jan 29, 2019 |
| Grant date | Jan 29, 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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Abstract
Official abstract text for this publication.
A hand-held machine tool has an electric-motor drive and a machining tool. The electric-motor drive has an electronically commutated electric motor, and the electric-motor drive is provided to drive the machining tool. The electronically commutated electric motor has an outer diameter, and a ratio of the outer diameter of the electronically commutated electric motor to a diameter of the machining tool is a maximum of 0.42.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hand-held machine tool, comprising: an electromotive drive; and a machining tool having an outside diameter, wherein: the electromotive drive has an electronically commutated electric motor and is configured to drive the machining tool, the electronically commutated electric motor having a rotation speed, the electronically commutated electric motor has an outside diameter, and a ratio of the outside diameter of the electronically commutated electric motor to a diameter of the machining tool is at most 0.42, wherein a ratio of the rotation speed of the electronically commutated electric motor to the outside diameter of the machining tool is at most 28.5 rpm/mm. 2. The hand-held machine tool as claimed in claim 1 , wherein: the electronically commutated electric motor has a height, and a ratio of the height of the electronically commutated electric motor to the diameter of the machining tool is at most 0.36. 3. A hand-held machine tool, comprising: an electromotive drive, which has an electronically commutated electric motor and is configured to drive a machining tool, wherein a ratio of the magnitude of the difference between a diameter of the machining tool and an outside diameter of the electronically commutated electric motor to the magnitude of a rotation speed of the electronically commutated electric motor is 1/50 or more. 4. The hand-held machine tool as claimed in claim 1 , wherein the electronically commutated electric motor is an external rotor motor. 5. The hand-held machine tool as claimed in claim 1 , wherein the electronically commutated electric motor directly drives the machining tool. 6. The hand-held machine tool as claimed in claim 1 , wherein the hand-held machine tool is a mains-operated hand-held machine tool. 7. The hand-held machine tool as claimed in claim 1 , wherein the hand-held machine tool is a battery-operated hand-held machine tool. 8. The hand-held machine tool as claimed in claim 1 , wherein the hand-held machine tool is an angle grinder. 9. The hand-held machine tool as claimed in claim 1 , wherein the ratio of the outside diameter of the electronically commutated electric motor to the diameter of the machining tool is at most 0.39. 10. The hand-held machine tool as claimed in claim 1 , wherein the ratio of the outside diameter of the electronically commutated electric motor to the diameter of the machining tool is at most 0.32. 11. The hand-held machine tool as claimed in claim 2 , wherein the ratio of the height of the electronically commutated electric motor to the diameter of the machining tool is at most 0.30. 12. The hand-held machine tool as claimed in claim 2 , wherein the ratio of the height of the electronically commutated electric motor to the diameter of the machining tool is at most 0.22. 13. The hand-held machine tool as claimed in claim 3 , wherein the electronically commutated electric motor is an external rotor motor. 14. The hand-held machine tool as claimed in claim 3 , wherein the electronically commutated electric motor directly drives the machining tool. 15. The hand-held machine tool as claimed in claim 3 , wherein the hand-held machine tool is a mains-operated hand-held machine tool. 16. The hand-held machine tool as claimed in claim 3 , wherein the hand-held machine tool is a battery-operated hand-held machine tool. 17. The hand-held machine tool as claimed in claim 3 , wherein the hand-held machine tool is an angle grinder. 18. The hand-held machine tool as claimed in claim 3 , wherein the ratio is 1/40. 19. The hand-held machine tool as claimed in claim 3 , wherein the ratio is 1/22.
Assignees
Inventors
Classifications
Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title
- B24B23/028Primary
Angle tools · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10189140B2 cover?
- A hand-held machine tool has an electric-motor drive and a machining tool. The electric-motor drive has an electronically commutated electric motor, and the electric-motor drive is provided to drive the machining tool. The electronically commutated electric motor has an outer diameter, and a ratio of the outer diameter of the electronically commutated electric motor to a diameter of the machini…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification B24B23/028. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 29 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).