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US 12,311,518 B2Granted
Impact drill
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsWei Lu, Changwei Zuo
Life of this patent
Estimating the term…
Abstract
An impact drill includes a lock pin, a biasing element, a function conversion member and an operation member. The lock pin is connected to the locking ring. The biasing element is connected to the lock pin and provides a biasing force that causes the lock pin to press against the locking ring. The function conversion member includes a stop portion configured to stop the movement of the lock pin along the first axis and a release portion configured to allow the movement of the lock pin along the first axis. The operation member is connected to the function conversion member. The operation member is configured to drive the function conversion member to rotate around the first axis to switch the stop state of the movement of the lock pin along the first axis.
Claims19
An impact drill, comprising:
- a motor;
- a housing assembly configured to support the motor;
- an output shaft capable of being driven by the motor to rotate around a first axis;
- a transmission assembly comprising a locking ring rotatable relative to the housing assembly;
- a lock pin connected to the locking ring and configured to limit rotation of the locking ring;
- a biasing element configured to bias the lock pin such that the lock pin applies a locking force to stop the rotation of the locking ring;
- a function conversion member rotatably mounted about the first axis, the function conversion member comprising a stop portion configured to stop movement of the lock pin along an axis parallel to the first axis and a release portion configured to allow the movement of the lock pin along the axis parallel to the first axis, the function conversion member forms an opening for the lock pin and the transmission assembly to pass through, the stop portion protrudes toward a center of the opening relative to the release portion, and the function conversion member can rotate relative to the housing assembly around the first axis so that the stop portion and the release portion are separately aligned or staggered with the lock pin along an axial direction of the first axis;
- and
- an operation member configured to drive the function conversion member to switch a stop state of the movement of the lock pin along the axial direction of the first axis,
- wherein the function conversion member and the operation member are mated with a groove and boss to form a stop structure to stop a movement of the function conversion member along the first axis,
- wherein the operation member drives the function conversion member to rotate solely around the first axis to selectively stop movement of the lock pin or allow movement of the lock pin along the first axis, and
- the locking ring includes locking teeth for abutting the lock pin.
9 more elements
An impact drill, comprising:
- a motor;
- a housing assembly configured to support the motor;
- an output shaft capable of being driven by the motor to rotate around a first axis;
- a transmission assembly comprising a locking ring rotatable relative to the housing assembly;
- a lock pin connected to the locking ring and configured to stop rotation of the locking ring;
- and
- a function conversion member rotatably mounted about the first axis and restrained from movement along an axial direction of the first axis, the function conversion member further selectively connected to the lock pin by rotating the function conversion member about the first axis,
- wherein the function conversion member forms an opening for the lock pin and the transmission assembly to pass through, a stop portion protrudes toward a center of the opening relative to a release portion, and the function conversion member can rotate relative to the housing assembly around the first axis so that the stop portion and the release portion are separately aligned or staggered with the lock pin along the axial direction of the first axis, and
- wherein the function conversion member comprises a first position and a second position, when the function conversion member is in the first position, the function conversion member is connected to the lock pin and movement of the lock pin relative to the housing assembly along an axis parallel to the first axis is stopped, and, when the function conversion member is in the second position, the lock pin is capable of moving relative to the housing assembly along the axis parallel to the first axis.
6 more elements
An impact drill, comprising:
- a motor;
- a housing assembly configured to support the motor;
- an output shaft capable of being driven by the motor to rotate around a first axis;
- a transmission assembly comprising a locking ring rotatable relative to the housing assembly;
- a plurality of lock pins connected to the locking ring and configured to stop rotation of the locking ring;
- an annular gasket connected to the plurality of lock pins;
- a biasing element connected to the annular gasket and configured to make the plurality of lock pins apply a locking force to stop the rotation of the locking ring;
- and
- a function conversion member rotatably mounted about the first axis and restrained from movement along an axial direction of the first axis, the function conversion member further selectively connected to the lock pin by rotating the function conversion member about the first axis,
- wherein the function conversion member forms an opening for the lock pin and the transmission assembly to pass through, the stop portion protrudes toward a center of the opening relative to the release portion, and the function conversion member can rotate relative to the housing assembly around the first axis so that a stop portion and a release portion are separately aligned or staggered with the lock pin along an axial direction of the first axis, and
- wherein the function conversion member comprises a first position and a second position, when the function conversion member is in the first position, the function conversion member is connected to the plurality of lock pins and movement of the plurality of lock pins relative to the housing assembly along an axis parallel to the first axis is stopped, and, when the function conversion member is in the second position, the plurality of lock pins are capable of moving relative to the housing assembly along the axis parallel to the first axis.
8 more elements
Dependencies are inferred from the claim text.