Embodiments of devices for converting continuous rotational motion into oscillating motion are disclosed herein. In one embodiment, an oscillation device can include an input shaft that rotates about a first axis, a portion of the input shaft defining an eccentric section that defines a second central axis offset from the first axis, a connector rotatably coupled around the eccentric section, an oscillating shaft offset from the input shaft that rotates about a third axis, and a pin coupled to the oscillating shaft and extending towards the connector. The connector includes a sleeve slidably receiving an end of the pin, and continuous rotation of the input shaft about the first axis causes an eccentric movement of the connector, and the eccentric movement of the connector oscillates the sleeve along the pin and oscillates the pin with respect to the oscillating shaft, thereby oscillating the oscillating shaft about the third axis.

Embodiments of devices for converting continuous rotational motion into oscillating motion are disclosed herein. In one embodiment, an oscillation device can include an input shaft that rotates about a first axis, a portion of the input shaft defining an eccentric section that defines a second central axis offset from the first axis, a connector rotatably coupled around the eccentric section, an oscillating shaft offset from the input shaft that rotates about a third axis, and a pin coupled to the oscillating shaft and extending towards the connector. The connector includes a sleeve slidably receiving an end of the pin, and continuous rotation of the input shaft about the first axis causes an eccentric movement of the connector, and the eccentric movement of the connector oscillates the sleeve along the pin and oscillates the pin with respect to the oscillating shaft, thereby oscillating the oscillating shaft about the third axis.

Embodiments of devices for converting continuous rotational motion into oscillating motion are disclosed herein. In one embodiment, an oscillation device can include an input shaft that rotates about a first axis, a portion of the input shaft defining an eccentric section that defines a second central axis offset from the first axis, a connector rotatably coupled around the eccentric section, an oscillating shaft offset from the input shaft that rotates about a third axis, and a pin coupled to the oscillating shaft and extending towards the connector. The connector includes a sleeve slidably receiving an end of the pin, and continuous rotation of the input shaft about the first axis causes an eccentric movement of the connector, and the eccentric movement of the connector oscillates the sleeve along the pin and oscillates the pin with respect to the oscillating shaft, thereby oscillating the oscillating shaft about the third axis.

A replay plate 44 is set to have a vertically and horizontally symmetrical shape when a worm wheel 33 is viewed from its axial direction; the worm wheel 33 is provided with an accommodating concave portion 33g in which the relay plate 44 is housed so as to be recessed in the axial direction; and a part of a non-slidably contacting surface in a slidably contacting surface 44a of the relay plate 44, i.e., a non-slidably contacting surface S is covered with first and second fixing parts 35a, 35b that are provided around the accommodating concave portion 33g and protrude in a direction intersecting with an axial direction of the worm wheel 33, the non-slidably contacting surface being a surface with which the contact plate is not slidably contacted.

A replay plate 44 is set to have a vertically and horizontally symmetrical shape when a worm wheel 33 is viewed from its axial direction; the worm wheel 33 is provided with an accommodating concave portion 33g in which the relay plate 44 is housed so as to be recessed in the axial direction; and a part of a non-slidably contacting surface in a slidably contacting surface 44a of the relay plate 44, i.e., a non-slidably contacting surface S is covered with first and second fixing parts 35a, 35b that are provided around the accommodating concave portion 33g and protrude in a direction intersecting with an axial direction of the worm wheel 33, the non-slidably contacting surface being a surface with which the contact plate is not slidably contacted.

A seat pumping device for a vehicle is mounted to a vehicle seat frame at a lower end part thereof, and may include: a housing having inner space provided therein and a slit hole provided in an upper end surface thereof; a clutch cam rotatably received into the inner space of the housing and having protrusions provided thereon, the protrusions protruding toward an outside of the housing by passing through the slit hole of the upper end surface thereof; and a lever bracket arranged at the outside of the housing to face the upper end surface of the housing, and having an insertion portion into which each of the protrusions of the clutch cam is inserted, so that the lever bracket is coupled to the clutch cam by coupling of the protrusion and the insertion portion to each other, and is rotated with the clutch cam.

A seat pumping device for a vehicle is mounted to a vehicle seat frame at a lower end part thereof, and may include: a housing having inner space provided therein and a slit hole provided in an upper end surface thereof; a clutch cam rotatably received into the inner space of the housing and having protrusions provided thereon, the protrusions protruding toward an outside of the housing by passing through the slit hole of the upper end surface thereof; and a lever bracket arranged at the outside of the housing to face the upper end surface of the housing, and having an insertion portion into which each of the protrusions of the clutch cam is inserted, so that the lever bracket is coupled to the clutch cam by coupling of the protrusion and the insertion portion to each other, and is rotated with the clutch cam.

A device for amplifying a force includes a prime mover configured to receive a first force, and a secondary mover configured to generate a second force that is greater than the first force in response to the prime mover receiving the first force. The prime mover includes an output that, in response to the first force, rotates about a first axis through a power stroke defined by an angular displacement that is less than ninety degrees. The prime mover's output includes a first end that revolves about the first axis during the power stroke. The secondary mover includes an input, an output, and a body. The input includes a second end that is coupled with the first end of the prime mover's output, and that, as the first end of the prime mover's output revolves about the first axis through the power stroke, the second end of the secondary mover's input also revolves about the first axis and moves relative to the secondary mover's body. The secondary's mover's output is configured to apply the second force to an object. The secondary mover's body is pivotally anchored at a location such that as the first end of the prime mover's output revolves about the first axis through the power stroke, the body of the secondary mover pivots about a second axis that passes through the location. The position of the device's secondary mover relative to the first end of the prime mover's output is such that, as the first end approaches the end of the power stroke, the first end of the prime mover's output accelerates, without an additional force applied to the prime mover's output.

A steering mechanism may comprise an actuation system for one-fingered operation by a user, the system configured to move at least a distal portion of the medical device such that 360 degree articulation is achievable, and a housing coupled to the system, the housing having proximal and distal ends. The system may comprise a first lever rotatable about a first axis, the first lever coupled to a first cam and configured to move the first cam from a first position to a second position when rotated about the first axis to deflect the distal portion; and a second lever rotatable about a second axis, the second lever coupled to a second cam and configured to move the second cam from a first position to a second position when rotated about the second axis to deflect the distal portion, wherein the first lever is coupled to the second lever.

A steering mechanism may comprise an actuation system for one-fingered operation by a user, the system configured to move at least a distal portion of the medical device such that 360 degree articulation is achievable, and a housing coupled to the system, the housing having proximal and distal ends. The system may comprise a first lever rotatable about a first axis, the first lever coupled to a first cam and configured to move the first cam from a first position to a second position when rotated about the first axis to deflect the distal portion; and a second lever rotatable about a second axis, the second lever coupled to a second cam and configured to move the second cam from a first position to a second position when rotated about the second axis to deflect the distal portion, wherein the first lever is coupled to the second lever.