Auto locking chuck
An automatic locking and chucking technology, applied in the direction of chucks, turning equipment, socket/socket connection, etc., can solve problems such as user injury, tool tip throwing off, etc.
Active Publication Date: 2009-08-19
TECHTRONIC POWER TOOLS TECHNOLOGY LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
A disadvantage of this typical self-locking chuck is that when the jaws are clamped on the tool bit, the tool bit may rotate in the user's hand, which can cause injury to the user
In addition, when the tool bit is released from the jaws (i.e. during the unclamping process), the tool bit is easily thrown off the chuck
Method used
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Embodiment Construction
[0065] Referring now to the accompanying drawings, and in particular to Figures 1 to 24b , shows an embodiment of the self-locking chuck 10 . Such as figure 1 As shown, the self-locking chuck 10 is operably connected to a power tool (not shown) having a housing enclosing a motor 12, a gearbox 14 and a gearbox drive shaft 16 (see figure 2 ). In the particular embodiment shown, the gearbox 14 is a two-speed gearbox switchable between a low speed setting and a high speed setting. The power tool may also include a clutch mechanism 18 for adjusting or limiting the output torque of the transmission drive shaft 16 . The detailed arrangement and various components of the gearbox 14 and clutch mechanism 18 are well known to those skilled in the power tool art, and thus will not be described here. However, it should be understood that the specific arrangement and components of the power tool are substantially irrelevant to the self-locking chuck 10 of the present invention. For e...
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The invention discloses a chuck that automatically tightens or loosens the jaws of the chuck in response to rotation of a power tool drive shaft or gearbox shaft is disclosed. The chuck has a body, a plurality of jaws and an adjustment ring that is threadably engaged with the jaws. The chuck body and the adjustment ring are each selectively rotationally coupled to the gearbox shaft of the power tool. The chuck body is also selectively rotationally coupled to the power tool housing. A mode selector is provided for placing the chuck in either drill mode or auto-lock mode. In drill mode, the chuck body is rotationally coupled to the gearbox shaft and is rotatable relative to the power tool housing, thereby allowing the chuck body to be rotationally driven by the gearbox shaft. In auto-lock mode, the adjustment ring is rotationally coupled to the gearbox shaft and the chuck body is rotationally coupled to the power tool housing to allow the adjustment ring to be rotationally driven by the gearbox shaft relative to the chuck body so as to tighten or loosen the jaws.
Description
technical field [0001] The present invention generally relates to chucks, and more particularly, to a chuck that can be locked or unlocked by rotating a drive shaft of a power tool. Background technique [0002] Chucks are well known and widely used. Typically, the chuck is attached to the drive shaft of the power tool. A power drill is a common example of a typical power tool that uses a chuck. However, chucks are also used on many other tools, such as screw drivers, nut drivers, and grinders. Additionally, power tools may be powered by wind, electricity, human power, or other energy sources. Chucks are commonly used to clamp the shaft of various operating tools so that the operating tool rotates with the drive shaft of the power tool. Typical operating tools that use chucks include drill bits, screwdriver bits, and abrasive discs or wheels. [0003] Many chucks have appeared at present. The most commonly used chuck utilizes three jaws to grip the shaft of the operati...
Claims
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IPC IPC(8): B23B31/103
CPCB23B31/1238B23B31/123B23B2231/06Y10T279/17632Y10T279/17941
Inventor 林展鸿莫国庭
Owner TECHTRONIC POWER TOOLS TECHNOLOGY LTD