Abstract: A torsion detecting device for a rotary shaft is provided. The position detecting device for a rotary shaft comprises a shaft and two encoding elements disposed at two portions of the shaft with a predetermined distance. Each encoding element comprises a first coding unit, a second coding unit and a detecting unit wherein the first coding unit and the second coding unit are coaxial to the shaft. Therefore, the detecting unit detects the signal of the first coding unit and the second coding unit to retrieve the angular position of the two portions and provide the torsion in accordance with the rotation angle difference and the predetermined distance.

Abstract: A magnetic ring encoding device for composite signals, which is disposed at an end of a rotary shaft of a rotary motor. The magnetic ring encoding device includes: a magnetic ring having a ring-shaped body section synchronously rotatable with the rotary shaft of the rotary motor, multiple magnetic poles being arranged on the body section at equal intervals; multiple Hall elements located and arranged around the body section at intervals, the Hall elements serving to sense magnetic field change that takes place when the magnetic poles pass through the Hall elements and output sensed signals according to the magnetic field change; and an adder for performing addition operation for the sensed signals output from the Hall elements.

Abstract: A hiding structure for positioning signal conversion mechanism of a torque motor, which includes a stator having a curvature center line, a rotor coaxially fitted with the stator, a positioning/detecting section disposed on the stator between the stator and the rotor for detecting movements of the motor and outputting corresponding analog signals and a signal conversion section for receiving the analog signals provided by the positioning/detecting section and converting the analog signals into digital signals and outputting the digital signals. The signal conversion section is fixed on an end face of one end of the stator in an insulated state.

Abstract: A magnetic absolute position sensor comprises: a read head, a horizontal magnetic scale, and an oblique magnetic scale. The read head is provided with a first position sensing unit and a second position sensing unit which are used produce signal with respect to the horizontal magnetic scale and the oblique magnetic scale, respectively. The distance between the first position sensing unit and the horizontal magnetic scale is constant, and the distance between the second position sensing unit and the oblique magnetic scale changes from narrow to wide. The absolute position identifying system is electrical connected to the first and second position sensing units, respectively, to obtain absolute position coordinates.

Abstract: A magnetic sensor comprises a read head, a position identification scale and a motion identification scale. The read head is provided with a position sensing unit opposite the position identification scale, and a motion sensing unit opposite the motion identification scale. The read head is further provided with a signal processing unit that is connected with the position sensing unit and the motion sensing unit. By such arrangements, the sensing accuracy can be improved, and the material cost can be relatively reduced.

Abstract: A magnetic type digital-analogic position-sensing device utilizes plural magnetic strips and plural digital sensing readers to perform position-sensing operation. One of the magnetic strips is provided with an analogic sensing reader. After being finely divided, the signal outputted from the analogic sensing reader can cooperate with the signals outputted from the digital sensing readers to obtain the displacement of the sensor. By such arrangements, the position-sensing device can both have high environment adaptability and high resolution.

Abstract: A hiding structure for positioning signal conversion mechanism of a torque motor, which includes a stator having a curvature center line, a rotor coaxially fitted with the stator, a positioning/detecting section disposed on the stator between the stator and the rotor for detecting movements of the motor and outputting corresponding analog signals and a signal conversion section for receiving the analog signals provided by the positioning/detecting section and converting the analog signals into digital signals and outputting the digital signals. The signal conversion section is fixed on an end face of one end of the stator in an insulated state.

Abstract: An assembly type cleaning structure for an induction reader comprises a positioning member with an assembling portion and restricting portions. With the assembling portion, the positioning member can be detachably assembled on the induction reader. And the restricting portions enable the positioning member to be forced onto the induction reader. The user can assemble the cleaning structure onto the induction reader or remove it by himself according to the environment.

Abstract: A magnetic absolute position sensor comprises: a read head, a horizontal magnetic scale, and an oblique magnetic scale. The read head is provided with a first position sensing unit and a second position sensing unit which are used produce signal with respect to the horizontal magnetic scale and the oblique magnetic scale, respectively. The distance between the first position sensing unit and the horizontal magnetic scale is constant, and the distance between the second position sensing unit and the oblique magnetic scale changes from narrow to wide. The absolute position identifying system is electrical connected to the first and second position sensing units, respectively, to obtain absolute position coordinates.

Abstract: A protected magnetic displacement device comprises a mover, a stator, a first protecting sheet and a second protecting sheet. The mover is provided with a magnetically sensitive portion, and the stator is provided with two loading portions each having plural magnets. The two loading portions are oppositely located to form a space therebetween for insertion of the magnetically sensitive portion of the mover. The first protecting sheet is located on one of the loading portions, and the second protecting sheet is located on the other of the loading portions. The magnetically sensitive portion of the mover is isolated inside the space of the stator by the first protecting sheet and the second shied cover, so that the surrounding metal objects can be prevented from being attracted into the stator since the leakage of the electromagnetic interference is avoided, thus making the mover move along the stator stably.

Abstract: A magnetic sensor comprises a read head, a position identification scale and a motion identification scale. The read head is provided with a position sensing unit opposite the position identification scale, and a motion sensing unit opposite the motion identification scale. The read head is further provided with a signal processing unit that is connected with the position sensing unit and the motion sensing unit. By such arrangements, the sensing accuracy can be improved, and the material cost can be relatively reduced.

Abstract: A positioning device of a magnetic ruler is used to position the magnetic ruler onto a guideway, so as to prevent the magnetic ruler from being peeled off the guideway as a result of the reduction of the adhesiveness and to maintain the magnetic induction of the magnetic ruler. Moreover, the restriction assembly can also protect the magnetic ruler and keep it from dust.

Abstract: A magnetic type digital-analogic position-sensing device utilizes plural magnetic strips and plural digital sensing readers to perform position-sensing operation. One of the magnetic strips is provided with an analogic sensing reader. After being finely divided, the signal outputted from the analogic sensing reader can cooperate with the signals outputted from the digital sensing readers to obtain the displacement of the sensor. By such arrangements, the position-sensing device can both have high environment adaptability and high resolution.

Abstract: A cleaning structure for an induction reader is mounted on an induction reader and moves with respect to a ruler. The cleaning structure comprises: a removing portion with a predetermined angle or curve, the removing portion is provided with an assembling portion at one side thereof facing the induction reader, and on the other side of the removing portion is formed an abutting portion. By such arrangements, the angle or curved type clean structure can use the slope of the removing portion to contact and push the obstacles towards both sides of the ruler. The cleaning structure not only has a light structure weight but also the resistance against pushing the obstacles is reduced.

Abstract: An assembly type cleaning structure for an induction reader comprises a positioning member with an assembling portion and restricting portions. With the assembling portion, the positioning member can be detachably assembled on the induction reader. And the restricting portions enable the positioning member to be forced onto the induction reader.

Abstract: A positioning structure of a magnetic induction ruler comprises a base, an induction ruler and a fixing assembly. In one end of the base is formed a first positioning portion, one end of the fixing assembly is formed with a second positioning portion, and the other end of the fixing assembly is formed with a restriction portion. The positioning member of the second positioning portion of the fixing assembly is inserted in the positioning hole of the first positioning portion, enabling both ends of the induction ruler to be fixed to the base by the pressure of the restriction portion of the fixing assembly. Thereby, the magnetic member and the metal members of the induction ruler can be stuck to each other firmly.

Abstract: A sensing device for sensing installation position of a read head is assembled on the read head correspondingly to a scale and comprises at least three sensing elements and three signal generators. The three sensing elements are located on one end surface of the read head facing the scale to sense the distance between the read head and the scale. According to the different distance, the respective signal generators will send out different signals to inform the user if the read head is correctly installed, thus ensuring the precision of the installation, the sensing operation and movement of the read head.

Abstract: A power-generating magnetic sensing equipment comprises a magnetic sensing read head and a magnetic scale. The magnetic sensing read head includes a power-generating device and a signal sensing control device. The magnetic sensing read head moves with respect to the magnetic scale to make the power-generating device produce changes of magnetic field to induce the electric current, so that the power-generating device is able to continuously supply the power to the signal sensing control device, thus keeping the signal transmission uninterrupted.

Abstract: A magnetic induction protecting structure comprises a platform, an induction ruler, an induction head and a protection assembly. The protection assembly covers an induction distance between the induction head and the induction ruler completely for scraping off the chips and dust on the induction ruler and to prevent the chips and dust from being fallen into or accumulated in the induction distance, so as to ensure the quality of the magnetic induction signals between the induction head and the induction ruler, and to prolong the life of the induction head and the induction ruler.