摘要:
A magnetic first detecting cylinder covers a magnetism leakage preventing member covering a first shaft. A second detecting cylinder is rotated along with a second shaft connected to the first shaft and one end thereof is opposed to one end of the first detecting cylinder with a clearance. A reluctance with respect to a passing magnetic flux in a first magnetic circuit constituted by generating the magnetic flux passing the first detecting cylinder and the second detecting cylinder by a first coil, is changed in accordance with an elastic relative rotational amount by a change in a transmitting torque of the two shafts. The magnetism leakage preventing member is molded from a synthetic resin material injected into a molding die. The first shaft and the first detecting cylinder are integrated to the magnetism leakage preventing member molded by being inserted into the molding die before injecting the synthetic resin material.
摘要:
In a magnetic core for a non-contact displacement sensor comprising a detecting coil, a coil receiving member and a terminal, the coil receiving member is comprised of a green compact made of insulated soft magnetic powder and an insulating layer covering the green compact, and an organic resin is filled in a closed space of the coil receiving member.
摘要:
The torque detecting apparatus comprises an input shaft to which a torque is inputted, an output shaft for outputting the inputted torque, a connecting shaft for connecting the input shaft and the output shaft to transmit the torque, a coil for detecting a torque applied from the input shaft to the connecting shaft based on a torsional angle which arises at the connecting shaft, and a holding cylinder for holding the coil coaxially, wherein the holding cylinder has inside thereof a recess extending in the circumferential direction, and the coil is fitted in the recess. Projections for supporting the holding cylinder at a predetermined position are provided on the outer surface of an axial portion which does not have the recess. Accurate torque detection can be effected even when pressure applied to the projections provided at the holding cylinder constituting the torque detecting apparatus is changed.
摘要:
The torque detecting apparatus comprises: an input shaft to which a torque is inputted; an output shaft for outputting the inputted torque; a connecting shaft for connecting the input shaft and the output shaft to transmit the torque; a coil for detecting a torque applied from the input shaft to the connecting shaft based on a torsional angle which arises at the connecting shaft; and a holding cylinder for holding the coil coaxially, wherein the holding cylinder has inside thereof a recess extending in the circumferential direction, and the coil is fitted in the recess. Projections for supporting the holding cylinder at a predetermined position are provided on the outer surface of an axial portion which does not have the recess. Accurate torque detection can be effected even when pressure applied to the projections provided at the holding cylinder constituting the torque detecting apparatus is changed.
摘要:
In a torque sensor, a first detection tube (13) made from magnetic material covers a cylindrical magnetic leak prevention member (12) that is made from nonmagnetic material and covers a first shaft (3) made from magnetic material. Magnetic resistance to magnetic flux, which passes through one end of the first detection tube (13) and one end of a second detection tube (14) that is made from magnetic material and rotates together with a second shaft (4), changes according to elastic relative rotation of the two shafts (3, 4) corresponding to transmitted torque, by providing a plurality of teeth (13a, 14a) along the circumferential direction at the one end of each detection tube (13, 14). The first shaft (3) and the first detection tube (13) are integrated with the magnetic leak prevention member (12) so that they can rotate together, by being inserted in a mold for forming the magnetic leak prevention member (12) before the synthetic resin material is poured into the mold. The circumferential width of each resin holding space (13A) between the teeth (13a) arranged along the circumferential direction at one end of the first detection tube (13) decreases gradually toward the other end of the first detection tube (13). The synthetic resin material solidified in the resin holding spaces (13A) is pressed against the teeth (13a) due to shrinkage thereof.
摘要:
In a torque sensor, a first detection tube (13) made from magnetic material covers a cylindrical magnetic leak prevention member (12) that is made from nonmagnetic material and covers a first shaft (3) made from magnetic material. Magnetic resistance to magnetic flux, which passes through one end of the first detection tube (13) and one end of a second detection tube (14) that is made from magnetic material and rotates together with a second shaft (4), changes according to elastic relative rotation of the two shafts (3, 4) corresponding to transmitted torque, by providing a plurality of teeth (13a, 14a) along the circumferential direction at the one end of each detection tube (13, 14). The first shaft (3) and the first detection tube (13) are integrated with the magnetic leak prevention member (12) so that they can rotate together, by being inserted in a mold for forming the magnetic leak prevention member (12) before the synthetic resin material is poured into the mold. The circumferential width of each resin holding space (13A) between the teeth (13a) arranged along the circumferential direction at one end of the first detection tube (13) decreases gradually toward the other end of the first detection tube (13). The synthetic resin material solidified in the resin holding spaces (13A) is pressed against the teeth (13a) due to shrinkage thereof.
摘要:
A fixing device includes a nip formation pad disposed opposite an inner circumferential surface of an endless belt and a pressing rotary body pressed against the nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressing rotary body, through which a recording medium is conveyed. The pressing rotary body has a diameter increasing from a center to each lateral end in an axial direction thereof. The nip formation pad includes a projection disposed downstream from a rotation axis of the pressing rotary body in a recording medium conveyance direction. The projection projects toward the pressing rotary body in an amount increasing from each lateral end to a center in a longitudinal direction of the nip formation pad parallel to the axial direction of the pressing rotary body.
摘要:
An image forming apparatus includes a latent image forming device that forms a latent image, a latent image carrier that carries the latent image, a development device that develops the latent image, and a controller. The development device includes a developer carrier that faces the latent image carrier and carries toner on a rotary surface thereof that rotates in a rotation direction perpendicular to a width direction of the developer carrier, and a regulation member that regulates the thickness of a layer of the toner on the surface of the developer carrier. The controller moves the toner on lateral end regions in the width direction of the surface of the developer carrier toward the latent image carrier. The end regions are located outside a maximum image forming region within a regulation member facing region of the surface of the developer carrier facing the regulation member.
摘要:
A torque and index detection apparatus includes a torque sensing section that senses torque exerted on a connecting shaft connecting a first and second shafts by a pair of magnetic sensing elements whose magnetic sensing directions are opposite, and a reference rotational position sensing section that senses a reference rotational position of the second shaft by the magnetic sensing elements. The reference rotational position sensing section includes a pair of magnets provided in the circumferential direction of the second shaft with like magnetic poles facing each other, a first magnetic part that is located between the magnets and the magnetic sensing elements, rotates integrally with the second shaft, and forms a magnetic path for magnetic flux of the magnets in the reference rotational position, and a second magnetic part that is provided between the magnetic sensing elements, and passes the magnetic flux from the first magnetic part uniformly to the magnetic sensing elements.
摘要:
In a torque sensor having lead pins connected to a wire harness, the wire harness includes: a plurality of lead wires; a plurality of connection terminals each having a sleeve mounted around each of the lead pins and a connection portion extended from an outer periphery of the sleeve to be connected with one end of the lead wire; and an electrically insulating terminal holder for holding the plural connection terminals. The terminal holder includes: a sleeve holder portion for holding the sleeves in mutually spaced relation in order to prevent the sleeves from contacting each other; and a connection-portion holder portion for holding the connection portions in mutually spaced relation in order to prevent the connection portions from bending to contact each other.