Chuck assembly
OwnerYi-Fu Cheninventor
Life of this patent
Estimating the term…
Abstract
A chuck assembly includes a chuck having a cross-shaped installation hole defined therethrough. A toothed disk is connected to the chuck and exposed from the outer periphery of the chuck. A driving unit includes a shaft and a gear which is mounted to the shaft. The driving unit is installed in the installation hole. The shaft includes two threaded sections respectively formed on two ends thereof. Two pawls each have threaded hole which is threadedly connected to the threaded section of the shaft corresponding thereto. When the gear is rotated to rotate the shaft, the two threaded sections are rotated to move the two pawls to move toward each other or away from each other.
Claims8
A chuck assembly comprising:
- a chuck (1) having an installation hole (11) defined through a top and a bottom thereof, a toothed disk (12) connected to the chuck (1) and exposed from an outer periphery of the chuck (1), the chuck (1) including two slots (13) defined radially the bottom thereof, each slot (13) being a T-shaped slot and including a radial path (131) and an axial path (132);
- a driving unit (4) installed in the installation hole (11) and having a shaft (22) and a gear (23), the shaft (22) rotatably received in the installation hole (11), the gear (43) mounted to a middle portion of the shaft (22), the shaft (22) having two threaded sections (221) respectively formed on two ends thereof the gear (23) having multiple teeth (231) which are partially exposed beyond the installation hole (11) in the top of the chuck (1), and
- two pawls (3) each having an installation portion (32) formed on a first end thereof, the installation portion (32) connected to one of the two ends of the shaft (22) and located in the installation hole (11), each pawl (3) having a clamp portion (33) formed on a second end thereof, the clamp portion (33) extending beyond the installation hole (11) in the bottom of the chuck (1), a ridge (34) extending radially from each of the pawls (3) and located between the installation portion (32) and the clamp portion (33), the two respective ridges (34) of the two pawls (3) slidably inserted into the two respective radial paths (131), the clamp portions (33) of the two pawl (3) located in the two respectively axial paths (132) each pawl (3) having a threaded hole (31) defined through the installation portion (32) thereof and the threaded hole (31) including inner threads (311) which are engaged with the threaded section (221) corresponding thereto, when the gear (23) is rotated, the shaft (22) is rotated by rotation of the gear (23) to move the two pawls (3) toward each other or away from each other in the installation hole (11).
(canceled)
Dependencies are inferred from the claim text.