118results about How to "Increase the rotation angle" patented technology

An improved rotation angle detecting device that detects a rotation angle of a first member relative to a second member is proposed. The rotation angle detecting device includes a magnet unit fixed to the first member and a pair of magnetic sensors fixed to the second member to provide output signals whose phase is different from each other at 90 degrees in angle. The magnet unit includes a pair of disk plates that has the same magnetic poles at the same circumferential positions and is disposed at a prescribed axial distance and a shaft that is made of magnetic material to support the disk plates at the center thereof. The magnetic unit provides a uniform magnetic field in a space around the shaft between the pair of disk plates, and a pair of magnetic sensors is disposed in the space.

An actuator includes a frame-shaped first mass portion; a supporting portion that supports the first mass portion and takes the shape of a frame so as to surround a perimeter of the first mass portion; a pair of first elastic portions coupling between the first mass portion and the supporting portion so that the first mass portion is supported by the supporting portion; a second mass portion provided inside the frame-shaped first mass portion; a pair of second elastic portions coupling between the second mass portion and the first mass portion so that the second mass portion is supported by the first mass portion; and a driver for rotating the first mass portion. The driver includes a ferromagnet provided on the first mass portion in a position separate from a rotation central axis of the first mass portion; a coil formed along the rotation central axis of the first mass portion and the supporting portion so as to surround and orbit a perimeter of the ferromagnet if the first mass portion is seen from above; and a voltage application unit for applying a voltage to the coil. An operation of the voltage application unit included in the driver causes the coil to generate a magnetic field. The generation of the magnetic field causes displacement of the ferromagnet relative to the coil. The displacement of the ferromagnet causes the first mass portion to rotate while torsionally deforming the pair of first elastic portions. The rotation of the first mass portion causes the second mass portion to rotate while torsionally deforming the pair of second elastic portions.

The invention relates to the technical field of shaves, in particular to a floating type shaver. The floating type shaver comprises a head portion, a housing, a main shell, a first floating component and a second floating component, wherein the first floating component is provided with a first through hole, and the second floating component is arranged in the first through hole. A second through hole is formed in the second floating component. A containing groove for containing the first floating component is further formed in the main shell in a sunken manner. A pair of first parent pivot-joint portions are arranged at the left side and the right side of the first floating component. A pair of first son pivot-joint portions matched with the first parent pivot-joint portions are arranged in the containing groove. A clamping component is further fixedly arranged at the bottom of the first floating component. The clamping component is provided with clamping pieces which extend into the front side and the rear side inside the first through hole in a protruding manner. The clamping pieces are provided with a pair of second parent pivot-joint portions. The second floating component is provided with a pair of second son pivot-joint portions matched with the second parent pivot-joint portions. A first elastic sleeving component is mounted between the first floating component and the containing groove, and a second elastic sleeving component is mounted between the second floating component and the housing. According to the floating type shaver, by means of the double son pivot-joint portions, the double parent pivot-joint portions and the double elastic sleeving components, 360-degree rotation can be achieved; and the effect achieved when the shaver is attached to the face in a floating manner is good.

A rotation angle detecting device includes a signal generator, a magnetic rotor and a rotation angle calculating unit that calculates a rotation angle θ of the rotor based on the output signals of the signal generator. The signal generator includes a magnetic rotor that has a permanent magnet and a shaft connectable with the rotating object and at least three magnetic sensor elements disposed in the magnetic field to generate a plurality of output signals when the rotor rotates. The rotation angle calculating unit calculates a first candidate of the rotation angle θ from a first pair of the three output signals, examines whether the first candidate of the rotation angle θ is normal or not and calculates a next candidate of the rotation angle θ from another pair of the three output signals if the first candidate of the rotation angle θ is not normal, examines whether the next candidate of the rotation angle θ is normal or not, repeats the above two steps until a next candidate of the rotation angle θ is judged normal, and outputs one of the first and next candidates of the rotation angle θ as a formal rotation angle if it is judged normal.

A vehicle, such as a motorcycle, can facilitate maintenance of an air cleaner without complicating a peripheral structure of a fuel tank. The vehicle can include a body frame, a rear arm attached to the body frame to support a rear wheel, a rear cushioning member provided between the body frame and the rear arm, and an engine fixed to the body frame. The vehicle can further include a fuel tank supported rotatably at a supporter arranged closer to a rear side of the vehicle than a substantially central position of an axis of the rear cushioning member.

A rotating mechanism for an electronic device has a stationary seat with a limiting recess, a limiting ring mounted through the stationary seat with inner and outer limits, a shaft mounted through the stationary seat and the limiting ring with a limiting protrusion. With the limiting protrusion pushing the inner limit and the outer limit sliding in the limiting recess, the shaft achieves two stages of rotation to enhance the rotating angle in both directions. Moreover, with the adjusting of the sizes of the components, the rotating mechanism may provide rotating angle by 360 to 700 degrees.

A two-dimensional comb-drive actuator and manufacturing method thereof are described. The two-dimensional comb-drive actuator includes a supporting base, a frame and a movable body. The supporting base has first comb electrodes and the frame has internal comb electrodes and external comb electrodes. The external comb electrodes of the frame are interdigitated to the first comb electrodes of the supporting base. The movable body has second comb electrodes which are interdigitated to the internal comb electrodes of the frame. The thicknesses of the second comb electrodes of the movable body are unequal to the internal comb electrodes of the frame and the external comb electrodes of the frame are unequal to the first comb electrodes of the supporting base. The two-dimensional comb-drive actuator utilizes a conducting layer for the above-mentioned comb electrodes in order to increase the rotation angle and operation frequency thereof.