Abstract: A semiconductor memory device has a stacked body in which a plurality of electrode layers and a plurality of insulating layers are alternately stacked in a first direction, an electrode film that extends in the stacked body in the first direction, and a plurality of ferroelectric films. Each of the ferroelectric films is disposed between and in contact with one of the electrode layers and the electrode film, and has a thickness in the first direction that is greater than the electrode layer that is in contact therewith.

Abstract: A motor module includes a motor, a fan, and a casing accommodating the motor and the fan therein. The casing includes a tubular main body portion, an intake port, an exhaust port, a motor disposing unit, a flow passage, and a partition unit. The flow passage includes a fan accommodating unit. The partition unit includes a first central partition unit that partitions the fan accommodating unit and the motor disposing unit. The first central partition unit includes a cutout portion provided at at least a portion of the first central partition unit. The motor disposing unit communicates with the fan accommodating unit via the cutout portion. A flow passage sectional area of the motor disposing unit is greater than a flow passage sectional area of the first central partition unit.

Abstract: A fan motor includes a motor, an impeller and a housing. The housing includes an inner wall portion, a silencer portion, and a communicating opening. The inner wall portion extends along a rotation axis to assume a tubular shape, and houses at least a portion of the impeller therein. The silencer portion includes a portion radially outside of the inner wall portion, and defines a silencing space between the inner wall portion and the silencer portion. The communicating opening brings a space inside of the inner wall portion into communication with the silencing space. A portion of the communicating opening is defined by an end portion of the inner wall portion on an inlet side. The silencing space covers only a portion of the circumferential extent of the inner wall portion. This allows the silencing space to be arranged in a dead space around the inner wall portion.

Abstract: A cyclone type dust collecting apparatus according to an exemplary embodiment of the claimed disclosure includes a collection container having a tubular shape extending in a front-rear direction, the collection container including a front end surface and a rear end surface, an inflow portion into which air flows, the inflow portion being connected to a peripheral surface of the collection container, and an inner cylinder that penetrates the rear end surface, a portion of the inner cylinder being disposed inside the collection container. In the cyclone type dust collecting apparatus, the inner cylinder includes, at a peripheral surface in a portion positioned inside the collection container, an outlet through which the air flows out, the rear end surface has a width that is larger than that of the front end surface, and the inflow portion is disposed unevenly on a front side.

Abstract: A motor module includes a motor, a fan, and a casing accommodating the motor and the fan therein. The casing includes a tubular main body portion, an intake port, an exhaust port, a motor disposing unit, a flow passage, and a partition unit. The flow passage includes a fan accommodating unit, a first muffling chamber that communicates with the fan accommodating unit via a first communication path, and a second muffling chamber that communicates with the first muffling chamber via a second communication path. In addition, the partition unit includes an inner partition unit that partitions the motor disposing unit and the first muffling chamber. The first muffling chamber communicates with the motor disposing unit via a cutout portion in the inner partition unit.

Abstract: A motor module includes a motor, a fan, and a casing accommodating the motor and the fan therein. The casing includes a tubular main body portion, an intake port, an exhaust port, a motor disposing unit, a flow passage, and a partition unit. The flow passage includes a fan accommodating unit. The partition unit includes a first central partition unit that partitions the fan accommodating unit and the motor disposing unit. The first central partition unit includes a cutout portion provided at at least a portion of the first central partition unit. The motor disposing unit communicates with the fan accommodating unit via the cutout portion. A flow passage sectional area of the motor disposing unit is greater than a flow passage sectional area of the first central partition unit.

Abstract: A motor module includes a motor, a fan, and a casing accommodating the motor and the fan therein. The casing includes a tubular main body portion, an intake port, an exhaust port, a flow passage, and a partition unit. The flow passage includes a fan accommodating unit, a first muffling chamber that communicates with the fan accommodating unit via a first communication path, a second muffling chamber that communicates with the first muffling chamber via a second communication path, and a third muffling chamber that communicates with either one of the first muffling chamber or the second muffling chamber via a third communication path, and communicates with the exhaust port.

Abstract: A hair dryer includes a fan motor, a heater unit, and a body case arranged to cover the fan motor and the heater unit, and arranged to extend in a front-rear direction around a central axis. The fan motor includes an impeller arranged to rotate about the central axis, and a motor arranged to rotate the impeller. The body case includes an intake case portion including an air inlet, a discharge case portion including an air outlet, and an admission case portion arranged between the air inlet and the air outlet, and including an admission inlet. The intake case portion includes a suction tube portion arranged to extend toward the admission inlet. The intake case portion and the admission case portion are arranged to together define an expansion chamber arranged between the admission inlet and the air inlet and radially outside of the suction tube portion and the admission inlet.

Abstract: This motor module includes a motor, a fan, and a casing arranged to house the motor and the fan therein. The casing includes a tubular body portion arranged to extend in an axial direction, an air inlet, an air outlet, a flow passage, and a partitioning portion. The flow passage is a space arranged to join the air inlet and the air outlet to each other between the body portion and the motor. The partitioning portion is arranged in the flow passage to partition the flow passage. The flow passage includes a fan accommodating portion, a first silencing chamber arranged to be in communication with the fan accommodating portion through a first communicating passage, and a second silencing chamber arranged to be in communication with the first silencing chamber through a second communicating passage. The second silencing chamber is arranged to be in communication with the air outlet.

Abstract: This fan motor includes a motor, an impeller arranged to rotate together with a rotating portion of the motor, and a housing arranged to house the motor and the impeller therein. The housing includes an inner wall portion, a silencer portion, and a communicating opening. The inner wall portion is arranged to extend along a rotation axis to assume a tubular shape, and is arranged to house at least a portion of the impeller therein. The silencer portion includes a portion arranged radially outside of the inner wall portion, and is arranged to define a silencing space between the inner wall portion and the silencer portion. The communicating opening is arranged to bring a space inside of the inner wall portion into communication with the silencing space. A portion of the communicating opening is defined by an end portion of the inner wall portion on an inlet side. The silencing space is arranged to cover only a portion of the circumferential extent of the inner wall portion.

Abstract: A hair dryer includes a fan motor, a heater unit, and a body case arranged to cover the fan motor and the heater unit. The fan motor includes an impeller arranged to rotate about a central axis, and a motor arranged to rotate the impeller. The body case includes an intake case portion including an air inlet, and a discharge case portion including an air outlet. Inside the body case, an inner tubular case portion arranged to extend along an inside surface of the body case is accommodated. A silencing space is defined between the inside surface of the body case and the inner tubular case portion. An opening portion is defined to join the silencing space and an interior space of the body case to each other.

Abstract: A hair dryer includes a fan motor, a heater unit, and a body case arranged to cover the fan motor and the heater unit, and arranged to extend in a front-rear direction around a central axis. The fan motor includes an impeller arranged to rotate about the central axis, and a motor arranged to rotate the impeller. The body case includes an intake case portion including an air inlet, a discharge case portion including an air outlet, and an admission case portion arranged between the air inlet and the air outlet, and including an admission inlet. The intake case portion includes a suction tube portion arranged to extend toward the admission inlet. The intake case portion and the admission case portion are arranged to together define an expansion chamber arranged between the admission inlet and the air inlet and radially outside of the suction tube portion and the admission inlet.

Abstract: A hair dryer includes a fan motor, a heater unit, and a body case arranged to cover the fan motor and the heater unit. The fan motor includes an impeller arranged to rotate about a central axis, and a motor arranged to rotate the impeller. The body case includes an intake case portion including an air inlet, and a discharge case portion including an air outlet. Inside the body case, an inner tubular case portion arranged to extend along an inside surface of the body case is accommodated. A silencing space is defined between the inside surface of the body case and the inner tubular case portion. An opening portion is defined to join the silencing space and an interior space of the body case to each other.

Abstract: It might happen that an inner column 3 is released from telescopic clamping and tilt clamping by an outer column 4 in a state before a vehicle fitting bracket 2 is fitted to a vehicle body. When a male steering shaft 6 is to escape from a female steering shaft 5, a come-out preventive member 7 is intruded into an inner peripheral annular groove 52 vicinal to an end portion of a female spline 51 on the front side with respect to the vehicle body. Then, the come-out preventive member 7 abuts on a shoulder portion 521 of the end portion, on the front side with respect to the vehicle body, of the inner peripheral annular groove 52, thereby surely enabling the male steering shaft 6 from escaping out of the female steering shaft 5.

Abstract: It might happen that an inner column 3 is released from telescopic clamping and tilt clamping by an outer column 4 in a state before a vehicle fitting bracket 2 is fitted to a vehicle body. When a male steering shaft 6 is to escape from a female steering shaft 5, a come-out preventive member 7 is intruded into an inner peripheral annular groove 52 vicinal to an end portion of a female spline 51 on the front side with respect to the vehicle body. Then, the come-out preventive member 7 abuts on a shoulder portion 521 of the end portion, on the front side with respect to the vehicle body, of the inner peripheral annular groove 52, thereby surely enabling the male steering shaft 6 from escaping out of the female steering shaft 5.

Abstract: A continuous partition wall is formed in the air introducing duct. The air introducing duct has a length L. The partition wall has a length equal to or greater than L/2. The partition wall divides the air introducing duct into first and second sections. A resonance silencer and a connecting duct are connected to the first section. A connecting position of the resonance silencer and the connecting duct is set such that the connecting position is fully included within a partition wall positioned range. A valve is arranged in the second section. Thus, intake noises is decreased in a wide range from a low frequency about 40 Hz to an intermediate frequency about several hundred Hz, which is normally hearable.