Connecting rod-piston assembly comprising a connecting rod having a spherical small end

A connecting rod-piston assembly comprising a piston and a connecting rod having a spherical small end comprising a ball and a connecting-rod member, wherein the ball and the connecting-rod member are designed as individual parts and, when assembled, form a connecting rod having a spherical small end, wherein the ball is a sintered powder metal part, wherein the connecting rod comprises a ball and the ball is inserted into the piston, wherein the connecting rod-piston assembly has a securing element which secures the ball against falling out of the piston, and wherein the piston and/or the securing element are each sintered powder metal parts.

A connecting rod-piston assembly comprising a piston and a connecting rod having a spherical small end comprising a ball and a connecting-rod member, wherein the ball and the connecting-rod member are designed as individual parts and, when assembled, form a connecting rod having a spherical small end, wherein the ball is a sintered powder metal part, wherein the connecting rod comprises a ball and the ball is inserted into the piston, wherein the connecting rod-piston assembly has a securing element which secures the ball against falling out of the piston, wherein in order to reduce the friction between the piston and the ball, lubrication is present, and wherein the lubrication is provided is a dry lubricant comprises graphite which is proportioned in a base powder of the ball.

A method for producing a connecting rod-piston assembly having a piston, a ball and a connecting-rod member, comprising the following steps:

• assembling the connecting-rod member with the ball to form a connecting rod having a spherical small end wherein the ball is a sintered powder metal part,
• putting together the ball and piston
• wherein the step of assembling the connecting-rod member with the ball to form a connecting rod having a spherical small end includes connecting the connecting rod member and the ball using a bayonet fastening.

A connecting rod having a spherical small end comprising a ball and a connecting-rod member, wherein the ball and the connecting-rod member are designed as individual parts and, when assembled, form a connecting rod having a spherical small end and wherein the ball is a sintered powder metal part, wherein after assembly to form a connecting rod having a spherical small end, the ball and the connecting-rod member are secured against separation with the aid of a nonpositive connection and/or with the aid of an integrally bonded connection, and wherein the non-positive connection uses a snap ring.

A connecting rod-piston assembly comprising a piston and a connecting rod having a spherical small end comprising a ball and a connecting-rod member, wherein the ball and the connecting-rod member are designed as individual parts and, when assembled, form a connecting rod having a spherical small end, wherein the ball is a sintered powder metal part, wherein the connecting rod comprises a ball and the ball is inserted into the piston, wherein the connecting rod-piston assembly has a securing element which secures the ball against falling out of the piston, and wherein the securing element is a ring.

A connecting rod having a spherical small end comprising a ball and a connecting-rod member, wherein the ball and the connecting-rod member are designed as individual parts and, when assembled, form a connecting rod having a spherical small end, wherein the ball is a sintered powder metal part, and wherein the connecting rod member and the ball are connected together using a bayonet fastening.