초록 ▼

The invention relates to a countershaft for a single or multiple cylinder motor having at least one unbalanced weight section (21, 22; 23, 24) and at least one bearing point (16, 17) that is allocated to the at least one unbalanced weight section (21, 22; 23, 24), wherein the bearing point (16, 17)

The invention relates to a countershaft for a single or multiple cylinder motor having at least one unbalanced weight section (21, 22; 23, 24) and at least one bearing point (16, 17) that is allocated to the at least one unbalanced weight section (21, 22; 23, 24), wherein the bearing point (16, 17) has a radial circumferential surface (18) that extends only partially over a circumference of the bearing point (16, 17) so that a centrifugal force resulting from rotation of the countershaft (11) lies within a region of the bearing point (16, 17) that is formed by the circumferential surface (18) extending partially over the circumference of the bearing point (16, 17) and having a ring (25) that surrounds the partially extended circumferential surface (18) of the bearing point (16, 17) and is connected by a force and/or form and/or material fitting connection to the bearing point (16, 17), wherein the circumferential surface (18) of the bearing point (16, 17) has a receptacle region (33) for receiving the ring (25) and at least one axial outer edge region or at least one ring-shaped region of the ring (25) is connected at least to one contact surface (37) of the receptacle region (33) in a force and/or form and/or material fitting manner. (Refer to FIG. 5.)

대표청구항 ▼

1. A balancing shaft for a single- or multi-cylinder engine comprising at least one unbalanced weight portion and at least one bearing point, which is associated with the at least one unbalanced weight potion, the bearing point comprising a radial peripheral surface which extends, only in part, over

1. A balancing shaft for a single- or multi-cylinder engine comprising at least one unbalanced weight portion and at least one bearing point, which is associated with the at least one unbalanced weight potion, the bearing point comprising a radial peripheral surface which extends, only in part, over a periphery of the bearing point so that a centrifugal force resulting from rotation of the balancing shaft is situated in a region of the bearing point which is formed by the peripheral surface extending, in part, over the periphery of the bearing point, and comprising a raceway which surrounds the partially formed peripheral surface of the bearing point and is connected to the bearing point by a non-positive and/or positive and/or cohesive joint, wherein the peripheral surface of the bearing point comprises a receiving region for receiving the raceway, and at least an axially outer edge region or at least an annular region of the raceway which is connected to at least an axial side surface of the receiving region with a non-positive and/or positive and/or cohesive fit or in that the raceway comprises a support portion in the axial direction on its running surface and adjacent thereto, which support portion extends in the radial direction, at least in part, but does not extend over the entire periphery and is connected to the receiving region or the main body. 2. The balancing shaft according to claim 1, wherein at least one reverse-drawn surface is provided adjacent to the peripheral surface of the bearing point in the peripheral direction and reduces the cross-sectional area of the bearing point. 3. The balancing shaft according to claim 1, wherein the receiving region is recessed and comprises at least one contact surface which is annular and extends along the width of the receiving region, at least in part. 4. The balancing shaft according to claim 3, wherein the contact surface of the receiving region is offset radially inwardly from the axis of rotation in relation to the peripheral surface, in such a way that a running surface of the raceway protrudes radially in relation to the adjacent peripheral surface. 5. The balancing shaft according to claim 3, wherein a radial contact surface bears against an axial side face of the receiving region and forms a contact shoulder for the raceway. 6. The balancing shaft according to claim 1, wherein at least one axial end face of the raceway is positioned on at least one axial side face of the receiving region. 7. The balancing shaft according to claim 1, wherein the raceway, placeable in the receiving region, which is recessed, and treated by a hardening procedure, comprises an untreated edge region. 8. The balancing shaft according to claim 1, wherein the contact surface of the receiving region is raised or radially prominent in relation to an adjacent portion of the balancing shaft. 9. The balancing shaft according to claim 1, wherein, to fix the raceway in the receiving region, a flange is provided on the edge region adjacent to the receiving region, in particular by a bead arranged on the peripheral surface. 10. The balancing shaft according to claim 9, wherein a single- or multi-stepped contour or at least one end face inclined to the running surface, which is peripheral, at least in part, is provided on the at least one end face of the raceway and acts as an undercut after providing the flange of an adjacent edge region. 11. The balancing shaft according to claim 1, wherein at least one radial or axial end face of the support portion is connected to the receiving region or main body. 12. The balancing shaft according to claim 1, wherein the peripheral surface of the bearing point has a peripheral angle of less than 180°. 13. The balancing shaft according to claim 12, wherein a reinforcing contour extends between the radial ends of the peripheral surface of the bearing point, which reinforcing contour is roof-shaped, is curved in the opposite direction to the peripheral surface, is curved outwardly or is polygonal or the like. 14. The balancing shaft according to claim 13, wherein the reinforcing contour and the peripheral surface form a cross-sectional area of the bearing point, the axis of rotation of the main body lying outside the cross-sectional area or adjacent to the reinforcing contour. 15. The balancing shaft according to claim 1, wherein an end portion and/or an adjacent unbalanced weight portion and/or an adjacent bearing point each have a reverse-drawn diameter which is smaller than an inner diameter of the raceway or of an inner ring of a rolling bearing.