Abstract: In this manufacturing method, when a plurality of planetary shaft main bodies are arranged at even intervals around a sun shaft main body, a state in which a sun threaded section is engaged with each of planetary threaded sections is referred to as a regular assembled state, and an assembly formed by a combination of the sun shaft main body and the planetary shaft main body in the regular assembled state is referred to as a first assembly. The first assembly is assembled in a state in which the relationship of the planetary shaft main body and the sun shaft main body is in correspondence with the relationship of the planetary shaft main body and the sun shaft main body in the regular assembled state.

Abstract: An electrically-heated catalytic converter comprises a catalyst support which produces heat when electric current is applied, a holding mat made of an electrical insulating material, the holding mat being provided so as to cover an outer circumference of the catalyst support, and a case which houses the catalyst support and holds the catalyst support via the holding mat. The catalytic converter treats gas flowing in the case by a catalyst supported on the catalyst support. The holding mat has a water-absorbing property. An insulation layer made of an electrical insulating material is provided between the case and the holding mat.

Abstract: An electrode according to one aspect of the present invention is formed on a base material composed of a ceramics. The electrodes includes a matrix composed of an Ni-Cr alloy (with a Cr content of 20 to 60 wt. %) or an MCrAlY alloy (M is at least one material selected from Fe, Co and Ni), and a disperse phase that is dispersed in the matrix and composed of an oxide mineral having a laminated structure. The ratio of area occupied by the disperse phase in a cross section of the electrode is 40 to 80%. With the structure like this, it is possible to suppress the increase in the electrical resistance even after a thermal cycle is performed.

Abstract: An electrically-heated catalytic converter comprises a catalyst support which produces heat when electric current is applied, a holding mat made of an electrical insulating material, the holding mat being provided so as to cover an outer circumference of the catalyst support, and a case which houses the catalyst support and holds the catalyst support via the holding mat. The catalytic converter treats gas flowing in the case by a catalyst supported on the catalyst support. The holding mat has a water-absorbing property. An insulation layer made of an electrical insulating material is provided between the case and the holding mat.

Abstract: An electrically-heated catalyst is disclosed. The catalyst may include a carrier; more than two comb-shaped electrode portions extending in a longitudinal direction; an electrically conductive underlying layer provided between the carrier and the comb-shaped electrode portions; and more than two electrically conductive fixing layers bonding to at least one of the comb-shaped electrode portions and to the underlying layer to fix the comb-shaped electrode portions to the carrier at more than two points spaced apart.

Abstract: In this manufacturing method, when a plurality of planetary shaft main bodies are arranged at even intervals around a sun shaft main body, a state in which a sun threaded section is engaged with each of planetary threaded sections is referred to as a regular assembled state, and an assembly formed by a combination of the sun shaft main body and the planetary shaft main body in the regular assembled state is referred to as a first assembly. The first assembly is assembled in a state in which the relationship of the planetary shaft main body and the sun shaft main body is in correspondence with the relationship of the planetary shaft main body and the sun shaft main body in the regular assembled state.

Abstract: In this manufacturing method, when a plurality of planetary shaft main bodies are arranged at even intervals around a sun shaft main body, a state in which a sun threaded section is engaged with each of planetary threaded sections is referred to as a regular assembled state, and an assembly formed by a combination of the sun shaft main body and the planetary shaft main body in the regular assembled state is referred to as a first assembly. The first assembly is assembled in a state in which the relationship of the planetary shaft main body and the sun shaft main body is in correspondence with the relationship of the planetary shaft main body and the sun shaft main body in the regular assembled state.

Abstract: An electrically-heated catalyst is disclosed. The catalyst may include a carrier; more than two comb-shaped electrode portions extending in a longitudinal direction; an electrically conductive underlying layer provided between the carrier and the comb-shaped electrode portions; and more than two electrically conductive fixing layers bonding to at least one of the comb-shaped electrode portions and to the underlying layer to fix the comb-shaped electrode portions to the carrier at more than two points spaced apart.

Abstract: A rotation/linear motion conversion mechanism provided with an annular shaft, a sun shaft arranged inside the annular shaft, planetary shafts arranged around the sun shaft, and a first gear mechanism and a second gear mechanism, which transmit force between the annular shaft and the planetary shafts. Each planetary shaft includes a first planetary gear, which configures part of the first gear mechanism, and a second gear, which configures part of the second gear mechanism. The planetary shaft is configured to permit relative rotation between the first planetary gear and the second planetary gear.

Abstract: A rotation/linear motion converting mechanism includes a shaft 1 having an external thread 1a on an outer circumferential surface, a nut 2 having an internal thread 2a on an inner circumferential surface, and a roller 3 arranged between the outer circumferential surface of the shaft 1 and the inner circumferential surface of the nut 2. The roller has a thread 3a threaded to the external thread 1a and the internal thread 2a. A spur gear 3b and a spur gear 3c are provided in portions of the roller 3. A spur gear 1b is provided in a portion of the shaft 1. The spur gear 1b is meshed with the spur gear 3b of the roller 3. Internal teeth 4a are provided in a portion of the nut 2. The internal teeth 4a are meshed with the spur gear 3 of the roller 3. This improves the lead accuracy of the shaft 1 when the nut 2 is rotated.

Abstract: In this manufacturing method, when a plurality of planetary shaft main bodies are arranged at even intervals around a sun shaft main body, a state in which a sun threaded section is engaged with each of planetary threaded sections is referred to as a regular assembled state, and an assembly formed by a combination of the sun shaft main body and the planetary shaft main body in the regular assembled state is referred to as a first assembly. The first assembly is assembled in a state in which the relationship of the planetary shaft main body and the sun shaft main body is in correspondence with the relationship of the planetary shaft main body and the sun shaft main body in the regular assembled state.

Abstract: A rotation/linear motion conversion mechanism provided with an annular shaft, a sun shaft arranged inside the annular shaft, planetary shafts arranged around the sun shaft, and a first gear mechanism and a second gear mechanism, which transmit force between the annular shaft and the planetary shafts. Each planetary shaft includes a first planetary gear, which configures part of the first gear mechanism, and a second gear, which configures part of the second gear mechanism. The planetary shaft is configured to permit relative rotation between the first planetary gear and the second planetary gear.

Abstract: A rotation/linear motion converting mechanism includes a shaft 1 having an external thread 1a on an outer circumferential surface, a nut 2 having an internal thread 2a on an inner circumferential surface, and a roller 3 arranged between the outer circumferential surface of the shaft 1 and the inner circumferential surface of the nut 2. The roller has a thread 3a threaded to the external thread 1a and the internal thread 2a. A spur gear 3b and a spur gear 3c are provided in portions of the roller 3. A spur gear 1b is provided in a portion of the shaft 1. The spur gear 1b is meshed with the spur gear 3b of the roller 3. Internal teeth 4a are provided in a portion of the nut 2. The internal teeth 4a are meshed with the spur gear 3 of the roller 3. This improves the lead accuracy of the shaft 1 when the nut 2 is rotated.

Abstract: There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling die starts, and after that, the formation of a spline having a small number of teeth by rolling starts by use of a spline rolling die while continuing the formation of the worm. Accordingly, a rolled material can be rolled forcibly by a driving source from the worm rolled using the thread rolling die. As a result, the spline having a small number of teeth whose number is thirteen or less can be formed by rolling onto the rolled material at the same time as the formation of the worm.

Abstract: There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling die starts, and after that, the formation of a spline having a small number of teeth by rolling starts by use of a spline rolling die while continuing the formation of the worm. Accordingly, a rolled material can be rolled forcibly by a driving source from the worm rolled using the thread rolling die. As a result, the spline having a small number of teeth whose number is thirteen or less can be formed by rolling onto the rolled material at the same time as the formation of the worm.

Abstract: A position detecting apparatus for an actuator includes a linear movement mechanism in which a magnet is provided; a coil which is provided so as to face the magnet such that a magnetic field is formed between the coil and the magnet; and a drive shaft which is connected to the linear movement mechanism through a ball screw, and which is linearly moved in response to rotational movement of the rotor, the rotational movement being caused by energizing the coil; and a magnetic flux detection sensor which detects a change in magnetic flux of the magnet, the change being caused by the rotational movement of the rotor, and which obtains an amount of linear movement of the drive shaft based on the detected change in the magnetic flux.

Abstract: An adhesion structure of a motor that adheres a rotor having a first linear expansion coefficient and a magnet having a second linear expansion coefficient, which differs from the first linear expansion coefficient, with an adhesive agent. The adhesion structure includes a thickness determining groove extending parallel to the axis of the rotor and arranged on the rotor in order to determine the thickness of an adhesive agent layer, which is formed from the adhesive agent. The thickness determining groove absorbs shearing stress produced by the difference between the first and second linear expansion coefficients at a surface adhered to the magnet. This effectively suppresses exfoliation of the adhesive agent layer.

Abstract: A position detecting apparatus for an actuator includes a linear movement mechanism in which a magnet is provided; a coil which is provided so as to face the magnet such that a magnetic field is formed between the coil and the magnet; and a drive shaft which is connected to the linear movement mechanism through a ball screw, and which is linearly moved in response to rotational movement of the rotor, the rotational movement being caused by energizing the coil; and a magnetic flux detection sensor which detects a change in magnetic flux of the magnet, the change being caused by the rotational movement of the rotor, and which obtains an amount of linear movement of the drive shaft based on the detected change in the magnetic flux.

Abstract: In a rotor having plural permanent magnets secured on a rotary shaft for use in, e.g., an electric motor which is incorporated preferably into a rack-type electric power steering device, a cylindrical cover is fit on the rotary shaft to cover the external surfaces of the plural permanent magnets, and one or both axial end portions of the cylindrical cover are plastically deformed thereby to secure the cylindrical cover onto the rotary shaft. Thus, the cylindrical cover is firmly secured to the rotary shaft and, even when one or more permanent magnets are separated from the rotary shaft or broken, prevents the separated permanent magnets or the broken fragments from scattering within a housing of the motor.

Abstract: An adhesion structure of a motor that adheres a rotor having a first linear expansion coefficient and a magnet having a second linear expansion coefficient, which differs from the first linear expansion coefficient, with an adhesive agent. The adhesion structure includes a thickness determining groove extending parallel to the axis of the rotor and arranged on the rotor in order to determine the thickness of an adhesive agent layer, which is formed from the adhesive agent. The thickness determining groove absorbs shearing stress produced by the difference between the first and second linear expansion coefficients at a surface adhered to the magnet. This effectively suppresses exfoliation of the adhesive agent layer.