The ball joint manufacturing method for manufacturing a ball joint including a ball stud which includes a substantially spherical metal ball section, and a resin housing rotatable accommodating the ball section of the ball stud, includes: a step of forming the housing to cover an outer periphery of the ball section; an induction heating step of subjecting the ball section to induction heating in a state in which the ball section is accommodated in an accommodation section of the housing until the temperature of the ball section reaches a predetermined target temperature; and a cooling step of cooling the ball section which has been subjected to the induction heating, wherein a torque adjustment step including the induction heating step and the cooling step is repeatedly performed.

A control arm including a frame, a mounting structure on the frame, and a ball-and-socket joint on the frame. The ball-and-socket joint includes an insert formed of a resilient plastic material bonded in a complementary receptacle or socket of the frame. A ball portion of a ball-and-socket joint pin is rotatably arranged in the insert. A plastic material coating is provided on the ball portion and a metal coating is provided on the plastic material coating. When placed in the insert the metal coating of the ball portion contacts an inner surface of the insert.

An axial ball joint includes a ball stud including a stud portion and a ball portion; a metal housing configured to rotatably support the ball portion of the ball stud; a resin ball sheet provided in an interposed manner between the ball portion and the housing. The housing is formed in a bottomed cylindrical shape by press work. The housing has a bottom wall and a peripheral side wall which are set respectively to thicknesses substantially equal to each other. The bottom wall and the peripheral side wall of the housing have therebetween a boundary portion formed with multiple rib portions which project in a brace shape from outside to inside of the housing.

A ball joint includes: a ball stud including a stud portion having one end portion connected to a structural member and another end portion, to which a ball portion is integrally joined; a housing made of metal and configured to support the ball portion to allow swinging and rotating movement of the ball portion; and a ball seat made of plastic and interposed between the housing and the ball portion. The ball seat includes a plurality of protrusions jutting out from the ball seat and inserted into a plurality of through holes formed in a bottom portion of the housing. The protrusions having pierced through the through holes are staked at their distal portions. The protrusion of the ball seat has a large diameter portion, whose diameter is larger than an inner diameter of the through hole, at its proximal portion proximal from the distal portion thereof.

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 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 joint assembly between a first component and a second component comprises a ball portion configured to be connected to the first component. A socket is configured to be connected to the second component or ground and comprises a socket base, a socket cover, and a spherical joint cavity within the assembled socket base and socket cover to receive the ball portion to form a spherical joint. At least one biasing member is in the joint assembly. A clamp clamps the socket base to the socket cover such that the at least one biasing member biases the socket base and the socket cover toward one another.

A partially polymerised thermohardenable connection part and to methods for producing and assembling such a connection part. The connection part for connecting two mechanical parts is thermohardenable and is partially polymerised in such a way as to be rigid at room temperature and able to be subjected to a subsequent polymerisation, the connection part being thus both sufficiently rigid to be able to be manipulated and brought into contact with at least one of the two mechanical parts which it is to interconnect and able to be subjected to a subsequent additional polymerisation in order to achieve its final polymerised state, the material of the connection part being rendered sufficiently soft during the additional polymerisation that it can adapt to the form of at least one of the mechanical parts to which the connection part must be connected.

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.

Disclosed is a support frame using ball members. The support frame using ball members of the present invention includes a support main body having a lower body provided with a plurality of lower cutout holes and an upper body provided with a plurality of upper cutout holes at positions corresponding to the plurality of lower cutout holes; a ball connector part provided with a plurality of ball members disposed in a plurality of space portions provided by the plurality of lower cutout holes and the plurality of upper cutout holes and coupled with a mounting object including at least one support; and a fastening part which is provided on the support main body and presses the plurality of hollow ball members by the lower body and the upper body to fix the positions of the plurality of ball members.