Hand-held power tool with a cooling unit

Patent metadata

Field	Value
Publication number	US-10279450-B2
Application number	US-201715617879-A
Country	US
Kind code	B2
Filing date	Jun 8, 2017
Priority date	Jun 17, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A hand-held power tool includes a housing, a motor, a cooling unit, and a plurality of electronics. The housing includes a first housing part and an air intake opening. The motor is assigned to a drive train of the hand-held power tool. The cooling unit is configured to cool the motor. The plurality of electronics is located in the housing. The first housing part includes at least one air channel that is integral with the first housing part. The air intake opening is configured to conduct a cooling air flow directly to the motor via the at least one air channel.

First claim

What is claimed is:

1. A hand-held power tool, comprising:
a housing including a first housing part and an air intake opening;
a motor assigned to a drive train of the hand-held power tool and located in the housing;
a cooling unit located in the housing and configured to cool the motor; and
at least one electronic located in the housing,
wherein:
the first housing part includes at least one first air channel that is integral with the first housing part, the at least one first air channel including:
a first surrounding wall integral with the first housing part and extending in a longitudinal direction of the at least one first air channel;
a first air inlet opening; and
a first air outlet opening;

the at least one first air channel is configured in a closed manner such that the at least one first air channel is circumferentially surrounded by the first surrounding wall between the first air inlet opening and the first air outlet opening; and
the air intake opening is configured to conduct a cooling air flow directly to the motor via the at least one first air channel.

2. The hand-held power tool according to claim 1 , wherein:
the housing includes at least one second housing part having at least one second air channel, the at least one second air channel including:
a second surrounding wall integral with the second housing part and extending in the longitudinal direction;
a second air inlet opening; and
a second air outlet opening;

the at least one second air channel is configured in a closed manner such that the at least one second air channel is circumferentially surrounded by the second surrounding wall between the second air inlet opening and the second air outlet opening;
the first housing part further includes a third air channel; and
the at least one first air channel, the at least one second air channel, and the third air channel are arranged in a circumferential direction of the housing.

3. The hand-held power tool according to claim 1 , wherein the at least one first air channel of the first housing part and the at least one second air channel of the second housing part are arranged so as to provide an anti-rotation device of the first and second housing parts with respect to each other.

4. A hand-held power tool, comprising:
a housing including a first housing part and an air intake opening;
a motor assigned to a drive train of the hand-held power tool and located in the housing;
a cooling unit located in the housing and configured to cool the motor; and
at least one electronic located in the housing,
wherein:
the first housing part includes at least one first air channel that is integral with the first housing part;
the air intake opening is configured to conduct a cooling air flow directly to the motor via the at least one first air channel;
the housing includes at least one second housing part having at least one second air channel;
the first housing part further includes a third air channel;
the at least one first air channel, the at least one second air channel, and the third air channel are arranged in a circumferential direction of the housing; and

at least one of the first housing part and the at least one second housing part is a socketed cover including at least one fourth air channel.

5. The hand-held power tool according to claim 1 , wherein the air intake opening is located on at least one of an end-face end of the housing and a side of the housing.

6. A hand-held power tool, comprising:
a housing including a first housing part and an air intake opening;
a motor assigned to a drive train of the hand-held power tool and located in the housing;
a cooling unit located in the housing and configured to cool the motor; and
at least one electronic located in the housing,
wherein:
the first housing part includes at least one first air channel that is integral with the first housing part;
the air intake opening is configured to conduct a cooling air flow directly to the motor via the at least one first air channel;
the at least one first air channel includes a recess; and
a cooling body of the at least one electronic is located in the recess, such that the cooling body forms at least a portion of at least one wall of the at least one first air channel.

7. A hand-held power tool, comprising:
a housing including a first housing part and an air intake opening;
a motor assigned to a drive train of the hand-held power tool and located in the housing;
a cooling unit located in the housing and configured to cool the motor; and
at least one electronic located in the housing,
wherein:
the first housing part includes at least one first air channel that is integral with the first housing part;
the air intake opening is configured to conduct a cooling air flow directly to the motor via the at least one first air channel; and
at least a portion of a cooling body of the at least one electronic at least partially defines the at least one first air channel.

8. The hand-held power tool according to claim 4 , wherein:
the at least one electronic is arranged on a carrier component; and
the carrier component includes at least one fifth air channel.

9. The hand-held power tool according to claim 8 , wherein the carrier component is a cooling body.

10. The hand-held power tool according to claim 1 , wherein the hand-held power tool is an angle-grinding machine.

11. The hand-held power tool according to claim 1 , wherein the housing is a motor housing.

12. The hand-held power tool according to claim 2 , wherein the at least one second housing part is a handle housing.

13. A hand-held power tool, comprising:
a housing including a first housing part and an air intake opening;
a motor assigned to a drive train of the hand-held power tool and located in the housing;
a cooling unit located in the housing and configured to cool the motor; and
at least one electronic located in the housing,
wherein:
the first housing part includes at least one first air channel that is integral with the first housing part;
the air intake opening is configured to conduct a cooling air flow directly to the motor via the at least one first air channel;
the housing includes at least one second housing part having at least one second air channel;
the first housing part further includes a third air channel;
the at least one first air channel, the at least one second air channel, and the third air channel are arranged in a circumferential direction of the housing;
at least one of the first housing part and the at least one second housing part is a socketed cover including at least one fourth air channel;
the at least one electronic is arranged on a carrier component;
the carrier component includes at least one fifth air channel;
the carrier component is a cooling body; and
the cooling body includes a heat-conducting material.

Assignees

• Bosch Gmbh Robert

Inventors

• Lutz Manfred
• Stierle Peter

Classifications

• B24B55/03

  designed as a complete equipment for feeding or clarifying coolant · CPC title

• B24B23/028 Primary

  Angle tools · CPC title

• B24B23/005

  Auxiliary devices used in connection with portable grinding machines, e.g. holders · CPC title

• B25F5/008

  Cooling means · CPC title