A rotary-body support structure includes: a rotary body including a rotary shaft and a contact portion spirally wound around the rotary shaft; and bearing parts that rotatably support the rotary body. The amount of engagement of the rotary body with a contact body that is in contact with the contact portion of the rotary body changes when the rotary body moves toward one side in a rotation axis direction.

In a method for producing a subassembly for a household appliance, at least one of a first rail and a separate second rail is cleaned by a mechanical and/or chemical cleaning operation. Subsequently the first and second rails are connected to one another so as to be able to slide relative to one another and thereby form a rail withdrawal device of the subassembly.

A decelerating clutch of a washing machine includes a bearing seat, an input shaft, an output shaft, and an output shaft sleeve. The input shaft and the output shaft are coaxial, the output shaft sleeve is sleeved on the input shaft and the output shaft, the output shaft sleeve is installed on the bearing seat via a bearing, the output shaft sleeve is connected with the input shaft via a planetary gear train, two ends and a middle part of the output shaft sleeve are respectively provided with at least one bearing, an inner ring of the bearing is coordinated with the output shaft sleeve, and an outer ring is coordinated with the bearing seat. The decelerating clutch of a washing machine improves a capability of an output shaft sleeve in resisting against a radial load, and further prolongs the service life of a decelerating clutch of a washing machine.

In a method for producing a subassembly for a household appliance, at least one of a first rail and a separate second rail is cleaned by a mechanical and/or chemical cleaning operation. Subsequently the first and second rails are connected to one another so as to be able to slide relative to one another and thereby form a rail withdrawal device of the subassembly.

A rotary-body support structure includes: a rotary body including a rotary shaft and a contact portion spirally wound around the rotary shaft; and bearing parts that rotatably support the rotary body. The amount of engagement of the rotary body with a contact body that is in contact with the contact portion of the rotary body changes when the rotary body moves toward one side in a rotation axis direction.

A motor assembly includes a rolling bearing installed on a rotation shaft between an impeller and a rotor to support a first support of the rotation shaft, and a motor housing having a stator. The motor housing has a gas bearing bracket for accommodating a second support of the rotation shaft disposed at a side opposite to the first support with respect to the rotor. The motor assembly includes a gas bearing assembly in the gas bearing bracket to support rotation of the second support of the rotation shaft. The gas bearing assembly includes a gas bearing for surrounding the second support. The gas bearing is spaced apart from the second support of the rotation shaft to define a gap therebetween when the rotation shaft rotates. The gas bearing assembly includes an elastic member interposed between the gas bearing bracket and the gas bearing to elastically support the gas bearing.

The present disclosure provides a bearing assembly, a rotor assembly and a draught fan. The bearing assembly has a shaft sleeve and a shaft extending through the shaft sleeve. An inner wall of the shaft sleeve is provided with two grooves in a circumferential direction. The shaft is provided with two channels corresponding to the two grooves respectively. The channels and the grooves form two raceways. Multiple rolling bodies are disposed between the shaft and the shaft sleeve and movable in the raceways. The shaft sleeve has an outer diameter of 13 mm, and a portion of the shaft extending within the shaft sleeve has a diameter of 5 mm.

A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.

A rotatable ball joint is provided. The rotatable ball joint is adapted to enable an object to be rotatably assembled on a foot stand, where the foot stand includes a fixed hole. The rotatable ball joint includes a friction part, a shapeshifting sphere, and an assembly part. The shapeshifting sphere is adapted to be compressed from a first state to a second state. A size of the shapeshifting sphere in the first state is greater than a size of the fixed hole, and a size of the shapeshifting sphere in the second state is less than the size of the fixed hole. The shapeshifting sphere is adapted to be disposed in the fixed hole. The shapeshifting sphere is connected to the assembly part. The object is adapted to be assembled on the assembly part. The friction part is configured on an outer surface of the shapeshifting sphere. When the shapeshifting sphere is disposed in the fixed hole, the friction part is in contact with an inner wall surface of the fixed hole to temporarily maintain the rotatable ball joint at a specific angle relative to the foot stand. A universal ball joint assembly is further provided.

An electronic mirroring device having a pressure hinge is provided, the electronic mirroring device has a supporter, a mirroring display and a pressure hinge assembly. The mirroring display is connected into the supporter by a cable. The pressure hinge assembly is connected with the supporter and the mirroring display, and the pressure hinge assembly has a first hinge portion and a second hinge portion pivoted with each other, a cabling space allowing the cable inserted therethrough is defined in the first hinge portion, a contacting surface is defined on the first hinge portion for a pivoting motion related to the second hinge portion, and the second hinge portion is located corresponding to the first hinge portion via the contacting surface. A fastener attached on the contacting surface is arranged between the first and the second hinge portion to position the electronic mirroring device anywhere in a continuous range.