Back to results
US 10,518,399 B2Granted
Clutch device and power tool with clutch device
AssigneeChervon (HK) Limited
InventorYue Lv
Life of this patent
Estimating the term…
Abstract
A clutch device includes a guiding element, a first clutch element being capable of sliding relative to the guiding element, a second clutch element being capable of sliding relative to the guiding element, an elastic element including a first connecting leg and a second connecting leg which are respectively connected with the first clutch element and the second clutch element, and a rotating element being capable of rotating about a first axis relative to the guiding element. The rotating element includes a first supporting portion for contacting with the first connecting leg, which is disposed at a first axial position of the first axis, and a second supporting portion for contacting with the second connecting leg, which is disposed at a second axial position of the first axis.
Claims10
An electric hammer, comprising:
- a rotating assembly for outputting rotating force;
- a motor having a motor shaft;
- and
- a transmission assembly for transferring power output by the motor to the rotating assembly, the transmission assembly comprising:
- a transmission element rotating synchronously with the rotating assembly;
- a first driving element being capable of rotating when driven by the motor;
- and
- a clutch device being capable of driving the first driving element to move forward in a direction of a rotating axis of the first driving element to contact with the transmission element so as to drive the transmission element to rotate or move backward to disengage with the transmission element,
- wherein the first driving element is formed with first external teeth extending in a direction substantially parallel to the rotating axis of the first driving element, second external teeth extending in the direction substantially parallel to the rotating axis of the first driving element and, in a direction substantially parallel to the rotating axis of the first driving element, the first external teeth have a first front end, the second external teeth have a second front end, and the first front end is protruded relative to the second front end,
- and the first external teeth and the second external teeth are spaced apart from each other in a circumferential direction around the rotating axis;
- wherein the clutch device comprises:
- a guiding element;
- a first clutch element being capable of sliding relative to the guiding element;
- a second clutch element being capable of sliding relative to the guiding element;
- an elastic element comprising a first connecting leg and a second connecting leg which are respectively connected with the first clutch element and the second clutch element;
- and
- a rotating element being capable of rotating about a first axis relative to the guiding element, the rotating element is formed with:
- a first supporting portion for contacting with the first connecting leg, which is disposed at a first axial position of the first axis,
- a second supporting portion for contacting with the second connecting leg, which is disposed at a second axial position of the first axis,
- a partition portion disposed between the first supporting portion and the second supporting portion separating the first supporting portion and the second supporting portion on the first axis,
- wherein the partition portion protrudes from the first supporting portion and the second supporting portion in a radial direction perpendicular to the first axis, and the first connecting leg and the second connecting leg intersect each other;
- and
- wherein when the rotating element is rotated about the first axis, the first connecting leg is driven by the first supporting portion so that the first clutch element slides relative to the guiding element, and the second connecting leg is driven by the second supporting portion so that the second clutch element slides relative to the guiding element.
20 more elements
A power tool, comprising:
- a housing;
- an output element for outputting power;
- a prime mover contained within the housing;
- and
- a transmission assembly for transferring the power output by the prime mover to the output element, the transmission assembly comprising:
- a transmission element being capable of driving the output element to rotate;
- a first driving element being capable of rotating when driven by the prime mover;
- and
- a clutch device being capable of driving the first driving element to move forward in a direction of a rotating axis of the first driving element to contact with the transmission element so as to drive the transmission element to rotate or move backward to disengage with the transmission element,
- wherein the first driving element is formed with a first external teeth extending in a direction substantially parallel to the rotating axis of the first driving element and a second external teeth extending in the direction substantially parallel to the rotating axis of the first driving element, and, in a direction substantially parallel to the rotating axis of the first driving element, the first external teeth have a first front end, the second external teeth have a second front end, and the first front end is protruded relative to the second front end, and the first external teeth and second external teeth are spaced apart from each other in a circumferential direction around the rotating axis;
- wherein the clutch device comprises:
- a guiding element;
- a first clutch element being capable of sliding relative to the guiding element;
- a second clutch element being capable of sliding relative to the guiding element;
- an elastic element comprising a first connecting leg and a second connecting leg which are respectively connected with the first clutch element and the second clutch element;
- and
- a rotating element being capable of rotating about a first axis relative to the guiding element, the rotating element is formed with:
- a first supporting portion for contacting with the first connecting leg, which is disposed at a first axial position of the first axis,
- a second supporting portion for contacting with the second connecting leg, which is disposed at a second axial position of the first axis,
- a partition portion disposed between the first supporting portion and the second supporting portion and separating the first supporting portion and the second supporting portion on the first axis,
- wherein the partition portion protrudes from the first supporting portion and the second supporting portion in a radial direction perpendicular to the first axis, and the first connecting leg and the second connecting leg intersect each other;
- and
- wherein when the rotating element is rotated about the first axis, the first connecting leg is driven by the first supporting portion so that the first clutch element slides relative to the guiding element, and the second connecting leg is driven by the second supporting portion so that the second clutch element slides relative to the guiding element.
20 more elements
Dependencies are inferred from the claim text.