A chair backrest swing structure includes a chassis connecting seat, a backframe connecting seat and an elastic buffer and reset member. The chassis connecting seat is configured to be cooperatively mounted with a chassis. The backframe connecting seat is configured to be cooperatively mounted with a backframe. The backframe connecting seat is rotatably cooperated with the chassis connecting seat. The elastic buffer and reset member is configured to enable that the backframe connecting seat may implement buffer and reset when swung left and right on the chassis connecting seat.

A ball socket assembly is provided that includes a ball socket having a socket base with a plurality of socket legs extending therefrom, the socket legs include ball stud interface surfaces forming a ball cavity for receiving and selectively engaging a ball head of a ball stud, a plurality of slots extending between the plurality of socket legs, a lower abutment wall having a bend line and situated in the socket base, and a flexible securing substrate positioned under the lower abutment wall, the socket assembly further including a mating boss substrate having a first boss inner passage with a first passage inside diameter, a second boss inner passage having a second passage inside diameter, wherein the first passage inside diameter is greater than the second passage inside diameter, a boss transition wall between the first boss inner passage and the second boss inner passage, and a boss bottom.

The invention relates to an assembly comprising a crankpin which includes a ball joint, and a connecting rod which carries a ball joint housing, wherein the ball joint housing and the connecting rod are assembled by a bayonet mounting, and wherein the connecting rod comprises a locking hole through which an axial section of the ball joint housing passes, the connecting rod comprises at least one locking lug, the ball joint housing comprises a locking notch which is defined by two opposing radial faces, characterized in that one of the two opposing radial faces of the locking notch and one facing face of the locking lug each have a complementary inclined profile in order, during the rotation, to cause an axial clamping of the locking lug in-side the locking notch.

The application discloses a universal joint assembly. The universal joint assembly, includes a base, two clamping members, a ball shaft, and a locking member. The base has an accommodating groove, a first opening and a second opening disposed opposite to the first opening. The clamping member is disposed inside the accommodating groove. Each of the two clamping members includes a bearing portion, a fulcrum portion, and a clamping portion. An adjustable space exists between an outer side of the bearing portion and an inner wall of the accommodating groove. The locking member presses the ball shaft and the bearing portion. The clamping member take a position where the fulcrum portion contacts the inner wall as a fulcrum, so that the clamping portion moves toward the ball shaft and clamps the ball shaft.

A coupling assembly is provided that includes a ball socket having a central socket axis, the ball socket includes a lower body portion extending to an upper flange portion, wherein the body portion and flange portion are at least partially segmented by a plurality of longitudinal socket slots to form a plurality of longitudinally extending arms, further included are a plurality of longitudinally extending journaling ribs protruding radially from the body portion, wherein the ribs include an upper rib portion and a lower rib portion, and wherein the upper rib portion has a greater radial width than the lower rib portion, a plurality of wedges extending from the body portion, a plurality of engagement tabs extending from the body portion, each having a tab end portion, and a ball stud engagement cavity centrally formed between the arms for receiving and pivotably securing a ball head of a ball stud therein.

A tolerance absorbing spacer for controlling manufacturing dimensional tolerance variation in products made with multiple internal components, each requiring unique dimensional tolerance allowance. This component adjusts and compensates for the resulting overall cumulative component height variation within an assembly of components, sometimes referred to as “stack height” by compensating for the maximum to minimum range of possible assembly heights, compressing and yielding under applied external force until all excess internal clearance is removed, except for a small, and desirable remaining clearance. This component yields and becomes essentially fully plastic, to provide the necessary tolerance adjustment feature only after reaching a predetermined, minimum force which exceeds all applied forces the component could reasonably encounter in service use and below which, the tolerance absorbing spacer remains fully rigid.

A ball stud track assembly includes a ball track and connector portion, the ball track comprising a back inner sidewall having a lower portion with a lower portion top surface and an upper portion having a retention ridge, an upper retaining arm extending from a front inner sidewall of the ball track and terminating at an upper arm end portion surface, and a lower retaining arm extending from the lower portion of the back inner sidewall and having a lower arm top surface, the upper arm end portion surface, the lower portion top surface, and the lower arm top surface extend to form a longitudinal ball channel having a central longitudinal ball channel axis, the ball channel configured to receive a ball stud head and allow sliding longitudinal movement, while restricting movement of the ball stud head along axes perpendicular to the central longitudinal ball channel axis.

A first component with a fixing groove is affixed to a second component, using a ball-head screw having a thread and a ball head, a slot nut for the thread fitting into the fixing groove of the first component, and a fixation part having a ball head seat and a planar fixation support surface for fixing the fixation part to the second component. The ball head seat receives the ball head, forming a ball joint. In a central position, the fixation support surface is parallel and offset to a longitudinal axis of the ball-head screw. The ball-head seat includes recessed portions receiving a screw portion of the ball-head screw. An inclination angle between the longitudinal axis of the ball-head screw in the central position, and the longitudinal axis of the ball-head screw in the position when received in the recessed portion, is at least 90°.

The invention relates to a valve assembly (10) for a charging device, in particular for a wastegate of an exhaust gas turbocharger, comprising a spindle (100), a lever arm (110) coupled to the spindle (100), and a valve unit (200). The lever arm (110) has a connecting element (112), designed as at least partially spherical, and the valve unit (200) has an accommodation region (212) with at least one first conical accommodation surface (214) in which the connecting element (112) is arranged.

A method for producing a ball joint having an outer housing with an outer housing stud opening, an inner housing arranged inside the outer housing and provided with an inner housing stud opening, and a ball stud having a joint ball is moveably fitted in the inner housing and which extends out through the inner housing stud opening. The method includes inserting and positioning the stud with its joint ball in the outer housing such that, between the outer housing and the stud, a free space surrounding the joint ball and/or stud remains and the stud extends out through the outer housing stud opening. After which the free space is filled with a plastic material which enclosed the joint ball and then cures to form the inner housing. A gap is formed between the outer and inner housings during curing and closed after curing by compressing the outer housing.