Abstract: Provided is a steering mechanism (8) including a swing bar (81a) which swings in response to input from a rider, a cam guide (83c) slidable on a peripheral surface of a column section (5a), a ball joint (82a) which slides the cam guide (83c) in response to the swinging of the swing bar (81a), a cam follower (83b) vertically provided on the peripheral surface of the column section (5a) to rotate the column section (5a) in response to the sliding of the cam guide (83c), and a coil spring (83e) which returns the cam guide (83c) to a predetermined rotation angle. The cam follower (83b) comes in contact with a cam surface (83c4) of the cam guide (83c) which has a recess surface shape, at two positions on the peripheral surface, in a state where the column section (5a) is located at a predetermined position.

Abstract: A wheelchair W includes: a column shaft (50) extending from the rear portion of a front fork (51) and turnably supported by a vehicle-body frame (2); a rocking bar (81a) that is rockably attached to the vehicle-body frame (2) and rocks according to a force applied by a rider; and a link mechanism (82) that joins the rocking bar (81a) and the column shaft (50) and turns the column shaft (50) according to rock of the rocking bar (81a).

Abstract: A bar handle device includes a fixing portion attached to a steering mechanism, a short portion to which grips are attached, and a long portion connecting the short portion and the fixing portion. The long portion is composed of a first bar member and a second bar member interconnected in serial, and includes a cross-linking member connecting the first bar member and the second bar member.

Abstract: The disclosure provides a wheel, drive wheel and wheel chair. The wheel includes an annular rim and a disk covering the rim on one side in an axial direction of the rim. The disk of the wheel includes a skin and a cushion member. The skin is formed of a fiber-reinforced material. The cushion member includes a cushion part and a shape retaining part. The cushion part is formed of a shock absorbing material and is disposed adjacent to the skin. The shape retaining part is formed of a fiber-reinforced material and is disposed adjacent to the cushion part.

Abstract: Provided is a steering mechanism (8) including a swing bar (81a) which swings in response to input from a rider, a cam guide (83c) slidable on a peripheral surface of a column section (5a), a ball joint (82a) which slides the cam guide (83c) in response to the swinging of the swing bar (81a), a cam follower (83b) vertically provided on the peripheral surface of the column section (5a) to rotate the column section (5a) in response to the sliding of the cam guide (83c), and a coil spring (83e) which returns the cam guide (83c) to a predetermined rotation angle. The cam follower (83b) comes in contact with a cam surface (83c4) of the cam guide (83c) which has a recess surface shape, at two positions on the peripheral surface, in a state where the column section (5a) is located at a predetermined position.

Abstract: A wheelchair W includes: a column shaft (50) extending from the rear portion of a front fork (51) and turnably supported by a vehicle-body frame (2); a rocking bar (81a) that is rockably attached to the vehicle-body frame (2) and rocks according to a force applied by a rider; and a link mechanism (82) that joins the rocking bar (81a) and the column shaft (50) and turns the column shaft (50) according to rock of the rocking bar (81a).

Abstract: A wheel frame (16a) includes a cylindrical hub (16c) into which an axle (11b) is rotatably inserted, a six-axis force sensor (16e) having an insertion hole (16e1) into which the hub (16c) is inserted, and an outer flange (16f) extending radially outward from an input section (16e2) of the six-axis force sensor (16e), wherein a hand rim (17) is attached to the outer flange (16f).

Abstract: The disclosure provides a wheel, drive wheel and wheel chair. The wheel includes an annular rim and a disk covering the rim on one side in an axial direction of the rim. The disk of the wheel includes a skin and a cushion member. The skin is formed of a fiber-reinforced material. The cushion member includes a cushion part and a shape retaining part. The cushion part is formed of a shock absorbing material and is disposed adjacent to the skin. The shape retaining part is formed of a fiber-reinforced material and is disposed adjacent to the cushion part.

Abstract: Provided is a wheel which is inexpensive, light, and sufficiently rigid. A wheel 6a includes an annular rim 60 to which a tire 6b is externally fitted, a hub 61 which is arranged at a center portion of the rim 60 and to which an axle is connected, and a disk 62 which is attached with the rim 60 at a periphery portion and which covers one side of the wheel 6a. The disk 62 includes a planar portion 62a and a first rib 62b provided at a surface of one side of the planar portion 62a and extending in the radial direction. The planar portion 62a is provided with a first groove 62d at a surface of the other side at a position corresponding to the first rib 62b.

Abstract: Provided is a wheel frame capable of measuring in detail the magnitude and the direction of a driving force while suppressing increase in weight and size of a driving wheel. A wheel flame (16a) includes a cylindrical hub (16c) into which an axle (11b) is rotatably inserted, a six-axis force sensor (16e) having an insertion hole (16e1) into which the hub (16c) is inserted, and an outer flange (16f) extending radially outward from an input section (16e2) of the six-axis force sensor (16e), wherein a hand rim (17) is attached to the outer flange (16f).

Abstract: Provided is a hand rim which is not slippery even when the surface is wet. A hand rim 7 includes a base material 70 and an anti-slippage layer 71 formed on the surface of the base material 70. The anti-slippage layer 71 includes an adhesive layer 71a formed on the surface of the base material 70 and particles 71b which are fixed through the adhesive layer 71a. The particles 71b are fixed so as to protrude from the adhesive layer 71a.

Abstract: Provided is a hand rim which is not slippery even when the surface is wet. A hand rim 7 includes a base material 70 and an anti-slippage layer 71 formed on the surface of the base material 70. The anti-slippage layer 71 includes an adhesive layer 71a formed on the surface of the base material 70 and particles 71b which are fixed through the adhesive layer 71a. The particles 71b are fixed so as to protrude from the adhesive layer 71a.

Abstract: Provided is a wheel which is inexpensive, light, and sufficiently rigid. A wheel 6a includes an annular rim 60 to which a tire 6b is externally fitted, a hub 61 which is arranged at a center portion of the rim 60 and to which an axle is connected, and a disk 62 which is attached with the rim 60 at a periphery portion and which covers one side of the wheel 6a. The disk 62 includes a planar portion 62a and a first rib 62b provided at a surface of one side of the planar portion 62a and extending in the radial direction. The planar portion 62a is provided with a first groove 62d at a surface of the other side at a position corresponding to the first rib 62b.

Abstract: A supercharger includes a centrifugal compressor having an impeller, a rotational shaft coupled to the impeller, a motor having a stator and a rotor housed in a casing, and a journal air bearing supporting the rotational shaft. The journal air bearing includes a hollow cylindrical member having an inner space therein and a heat transfer member fitted in the inner space. The heat transfer member is made of a material which is less rigid and has a greater coefficient of thermal conductivity than the hollow cylindrical member. The impeller radiates heat transferred through the heat transfer member into ambient air.

Abstract: An electric turbo compressor is an air compressor to be used in a fuel cell system, and includes a housing comprised of a compression casing, a motor casing, and a canceller casing, and the housing houses therein an impeller, a rotary shaft, a thrust canceller (a load cancellation section), and a motor unit. The rotary shaft is supported by a thrust air bearing in its thrust direction, and is axially supported by a radial air bearing in its rotating direction. A thrust load is generated at the rotary shaft when the number of rotations of the impeller increases. The pressure of the compressed air acts to the pressure chamber from the compressed air lead-out section of the compression casing via the compressed air passage, and this pressure acts on the canceller flange of the canceller shaft so as to generate a load towards the rear of the rotary shaft. Therefore, the thrust load is cancelled out.

Abstract: An electric turbo compressor is an air compressor to be used in a fuel cell system, and includes a housing comprised of a compression casing, a motor casing, and a canceller casing, and the housing houses therein an impeller, a rotary shaft, a thrust canceller (a load cancellation section), and a motor unit. The rotary shaft is supported by a thrust air bearing in its thrust direction, and is axially supported by a radial air bearing in its rotating direction. A thrust load is generated at the rotary shaft when the number of rotations of the impeller increases. The pressure of the compressed air acts to the pressure chamber from the compressed air lead-out section of the compression casing via the compressed air passage, and this pressure acts on the canceller flange of the canceller shaft so as to generate a load towards the rear of the rotary shaft. Therefore, the thrust load is cancelled out.

Abstract: A supercharger includes a centrifugal compressor having an impeller, a rotational shaft coupled to the impeller, a motor having a stator and a rotor housed in a casing, and a journal air bearing supporting the rotational shaft. The journal air bearing includes a hollow cylindrical member having an inner space therein and a heat transfer member fitted in the inner space. The heat transfer member is made of a material which is less rigid and has a greater coefficient of thermal conductivity than the hollow cylindrical member. The impeller radiates heat transferred through the heat transfer member into ambient air.

Abstract: An electric turbo compressor is an air compressor to be used in a fuel cell system, and includes a housing comprised o a compression casing, a motor casing, and a canceller casing, and the housing houses therein an impeller, a rotary shaft, a thrust canceller (a load cancellation section), and a motor unit. The rotary shaft is supported by a thrust air bearing in its thrust direction, and is axially supported by a radial air bearing in its rotating direction. A thrust load is generated at the rotary shaft when the number of rotations of the impeller increases. The pressure of the compressed air acts to the pressure chamber from the compressed air lead-out section of the compression casing via the compressed air passage, and this pressure acts on the canceller flange of the canceller shaft so as to generate a load towards the rear of the rotary shaft. Therefore, the thrust load is cancelled out.

Abstract: At least part of the inner circumferential wall of the outer casing is provided with a concave surface opposing the rotor blade tips as seen in a longitudinal section. Typically, each of the rotor blades is provided with aerofoil section, and the compressor is designed as a transonic axial flow compressor. Thereby, a compressive wave is produced upstream of the shockwave so that the Mach number of the flow entering the shockwave can be reduced. As a result, the shockwave is made less severe, and the shockwave loss can be reduced. In particular, because the concave surface is provided in the casing wall as opposed to the case where the concave surface is provided in the negative pressure side of the rotor blade, the reduction in the performance owing to the change in the angle of the airflow entering the passage defined by the concave surface under a partial load condition can be avoided.

Abstract: In an axial flow compressor, an apical angle at a leading edge of a stator blade progressively increases from a root end to a tip of the stator blade whereby the stator blade loss and noises caused by unsteady inter-blade airflow can be minimized. Preferably, the apical angle at the tip of the stator blade is 1.5 to 2.5 times of the apical angle at the root of the stator blade.