A vehicle drivetrain includes a driveshaft, a driveshaft joint and a boot. The driveshaft joint is configured to be coupled to an end of the driveshaft. The boot is disposed over the driveshaft joint. The boot has an inner wall and an outer wall. The inner and outer walls are separated by an empty space.

The present disclosure relates to a boots damage detection apparatus and a method. More specifically, the boots damage detection apparatus according to the present disclosure includes: a transmitter that transmits a command current for a movement to a first rack position or a second rack position; a receiver that receives a rack position to which a movement is performed in accordance with the command current and a rack force corresponding to the rack position from a plurality of sensors; and a determiner that determines damage/non-damage of boots based on a first rack force corresponding to the first rack position and a second rack force corresponding to the second rack position.

A steering device detecting airtightness of a road wheel actuator is proposed. The road wheel actuator includes a body unit, a motor unit connected to the body unit, and a controller connected to the motor unit. The controller checks an airtight state of a housing and bellows surrounding the body unit, the motor unit, and the controller.

A steering seal diagnostic system includes a steering linkage that is operatively connectable to a pair of road wheels. The steering seal diagnostic system also includes a sealed compartment containing at least a portion of the steering linkage. The steering seal diagnostic system further includes a pressure sensor positioned to detect an internal pressure within the sealed compartment over a range of travel of the steering linkage, wherein a pressure change lower than a pressure change threshold indicates a leak condition of the sealed compartment.

A bicycle frame sealing means includes a frame-side sealing element adapted to be sealingly connected with a saddle tube of a bicycle frame. A saddle post-side sealing element is adapted to be sealingly connected with a saddle post. Both sealing elements are interconnected by means of a flexible connecting elements, so that relative movements can occur between the two sealing elements or between the saddle tube and the saddle post, while a good tightness is still ensured.

An incrementally assembled skin-constrained inflatable bellows system includes a top end cap, a bottom end cap, and a bellows attached to and separating the top end cap and the bottom end cap and configured to hold pressurized fluid between the top and bottom end caps. The system further includes a nozzle configured to allow fluid to enter and exit the bellows, and an inextensible skin attached to each of the top end cap, the bottom end cap, and to the bellows. The top end cap assumes a first position when the bellows is inflated via the nozzle and, when the top end cap is adjusted from the first position to a second position, the skin is configured to maintain the top end cap in the second position and constrains the bellows into a predefined rigid three-dimensional shape.

Disclosed is a steering system comprising a housing, a steering rack which is movably arranged and extends out, of a housing end section of the housing on at least one side of the housing with a steering rack end portion, at least one tie rod attached to the steering rack with a ball joint, at least one bellows covering the steering rack end portion of the steering rack, the ball joint and a section of the tie rod adjacent to the ball joint, the bellows having a first end and a second end, the first end being attached to the housing end section and the second end being attached to the tie rod at a tie rod attachment section, wherein a rolling diaphragm is arranged inside of the bellows, wherein a first end of the rolling diaphragm is attached to the housing end section and a second end of the rolling diaphragm is attached to the ball joint or the steering rack end portion, and wherein a rolling bend of the rolling diaphragm is movable between the housing and the second end of the bellows.

A sealing device adapted for an object to be disposed through is provided. The sealing device includes a casing, a sealing elastic member, and a pressing member. The casing has an accommodating groove and a penetrating via communicated with the accommodating groove. The sealing elastic member is detachably disposed in the accommodating groove and has a through hole aligned with the penetrating via. The sealing elastic member is adapted to be compressed along an axis. The through hole has a first inner diameter before compression and a second inner diameter after compression. An outer dimension of the object is less than or equal to the first inner diameter and greater than the second inner diameter. The pressing member is detachably disposed at the casing and presses against the sealing elastic member, so that the compressed sealing elastic member is fixed in the accommodating groove.

An extraction interface for connecting a first flow channel to a second flow channel in an airtight manner has a main body with an extraction opening. The extraction opening has an opening plane and a sealing element that surrounds the extraction opening in the circumferential direction. In order to improve a sealing effect of the sealing element, the sealing element is an elastic bellows, which when viewed in a cross section oriented orthogonal to the opening plane has in a relaxed state of the sealing element an E-shape with at least one bending point, two legs that meet in the bending point and two leg end regions adjoining the legs. The leg end regions point radially outward in a direction facing away from the extraction opening and are connected to two locally separated connecting points of the main body.

To provide a dust cover capable of maintaining a state in which a first flexible part and a second flexible part of a bellows are fitted onto a mounting member. A dust cover includes a bushing, a bellows, and a mounting member. The mounting member has a main body and a flange part.