Hand-held drilling and/or hammering device with dust collecting element

A dust collection and tool technology, applied in the field of hand-held drilling and/or hammering tools, dust collection units, which can solve the problems of reduced motor rotation speed, motor speed can not choose the best speed of the fan, etc.
CN1541796AInactive Publication Date: 2004-11-03BLACK & DECKER INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BLACK & DECKER INC
Publication Date
2004-11-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

An electrically powered hand held drilling and / or hammering tool having a dust collection unit powered by a motor (51) housed in the unit, which unit can be releasably fitted to the tool. A plug arrangement (12) and a cooperating socket arrangement (28), one of which is formed on the tool and the other of which is formed on the unit, are provided for electrically connecting the power supply for the tool to the motor (51) of the unit. A first mechanical fixing arrangement is provided comprising a first projection (8) and a first cooperating recess (54), one of which is formed on the tool and the other of which is formed on the unit, located adjacent the respective part of the plug and socket arrangements and a second mechanical fixing arrangement is provided, located remotely from the first and comprising a manually actuable releasable latch arrangement (72,66) and a second cooperating recess (60), one of which is formed on the tool and the other of which is formed on the unit. The first and second mechanical fixing arrangements cooperate to secure the dust collection unit to the tool in such a way that the plug and socket arrangements form an electrical connection.
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Description

technical field

[0001] The invention contemplates a hand-held drilling and / or hammering tool with a dust collection unit and a dust collection unit for such a tool. Background technique

[0002] Hand-held drilling and / or hammering tools are known which may use a dust collection unit as an accessory. The collection unit can be mechanically releasably mounted on the tool and usually consists of a guard to collect dust from the tool or tool bit; a dust collection chamber; a filter and a system to generate hood, collection chamber and filter airflow. Dust and debris generated by tools and tool bits will be carried away by this airflow so that they can be sucked into the guard and into the collection cavity. As the airflow passes through the filter, dust or debris floating in the airflow will settle in the collection chamber.

[0003] Systems used to generate airflow typically include a fan, which can be placed in the tool or in the dust collection unit. When the fan is place...

Claims

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