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Multispeed power tool transmission

A technology for power tools and transmissions, which is applied to multi-gear ratio transmissions, transmissions, transmission control, etc., and can solve problems such as damage to high-speed performance of tools

Active Publication Date: 2008-11-26
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single-speed or two-speed transmissions commonly used in these power tools do not have sufficient speed reduction capability to allow these transmissions to be used for multiple purposes, and making these tools capable of operating at high torque would damage the high speed of these tools performance
Additionally, the rechargeable batteries employed in many of the early cordless rotary power tools were not suitable for low speed, high torque operations due to the amount of energy dissipated and the amount of energy dissipated by the power tool during these operations. speed's sake

Method used

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  • Multispeed power tool transmission
  • Multispeed power tool transmission
  • Multispeed power tool transmission

Examples

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Embodiment Construction

[0055] overview

[0056] refer to figure 1 and FIG. 2 , a power tool constructed in accordance with the present invention is indicated generally by the reference numeral 10 . Those skilled in the art will appreciate that the preferred embodiment of the invention may be a corded or cordless (battery operated) device, eg a portable rotary drill or drill (eg a drill or hammer drill). In the illustrated embodiment, the power tool 10 may be a cordless drill having a housing 12, a motor assembly 14, a multi-speed transmission assembly 16, a clutch mechanism 18, an output shaft assembly 20, a chuck 22, Trigger assembly 24 and battery pack 26. Those skilled in the art will understand that some components of the power tool such as the chuck 22, trigger assembly 24 and battery pack 26 are conventional in nature and therefore need not be described in great detail in this application. For a more complete understanding of the operation of some conventional features of power tool 10, ref...

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Abstract

A portable power tool (10) with a housing (12), a motor (14) having a motor output member (44), a driven member (46) and a transmission (16). The transmission (16), which is located in the housing (12), is configured to receive a rotary input from the motor output member (44) and to produce a rotary output that is transmitted to the output spindle (20). The transmission has a plurality of planetary transmission stages (302, 304, 306), each of which including a ring gear (310, 360, 400), a planet carrier (314, 364, 404) and a plurality of planet gears (312, 362, 402) that are supported by the planet carrier for meshing engagement with the ring gear. The transmission further includes at least one member that may be configured in a first condition, which renders at least one of the planetary transmission stages operable in an active mode, and a second condition, which renders at least one of the planetary transmission stages operable in an inactive mode. The transmission is operable in at least three overall speed reduction ratios.

Description

[0001] CROSS-REFERENCE TO PRIORITY AND RELATED APPLICATIONS [0002] This application is a continuation of US Serial No. 10 / 792,659, filed March 3, 2004. No. 10 / 792659 is a continuation-in-part of Serial No. 10 / 384809 filed March 10, 2003. No. 10 / 384809 is a serial application No. 09 / 694078 filed on September 26, 2001 entitled "First Stage Clutch", which has now become US Patent US6676557, This US patent claims the benefit of US Provisional Application No. 60 / 263379, filed January 23, 2001. Other features of the present invention are described and claimed in U.S. Patent No. 6,431,289, issued August 13, 2002, commonly assigned application Ser. No. 09 / 965,108 entitled "360 Degree Clutch Collar" , which is now US Patent US6502648; US Serial Application No. 09 / 963905 entitled "Housing with Functional Multimodal Element". technical field [0003] The present invention generally relates to power tools, such as rotatable drills, power screwdrivers, and rotatable cutting devices. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/74B23B45/00B23Q5/14B25B21/00B25B23/14B25F5/00B25F5/02F16H3/64F16H3/66F16H35/10F16H63/18
CPCF16H2200/0043B25F5/006B23Q5/142B23B45/008F16H2200/0034B25B21/00B25F5/001F16H3/64F16H2200/2035F16H63/18F16H2200/201B25F5/02B23B2260/11F16H3/66F16H2200/0039B25B23/14
Inventor 罗德尼·米尔本克里斯廷·波特托德·A·黑根迈克尔·C·鲍尔斯
Owner BLACK & DECKER INC