Belt for continuously variable transmission
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKen Kanokogi, Hideaki Yoshida
Life of this patent
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Abstract
A V-face of a metal element is prevented from being inclined due to a load from a pulley by increasing the height Hs of an upper non-contact portion of the V-face of the metal element. For example, when the height of the V-face is represented by Hv (mm), and the height of the upper non-contact portion of the V-face is represented by Hs (mm), the height Hv of the V-face and the height Hs of the upper non-contact portion are set so that a relationship −0.5265Hv+2.768≦Hs≦−0.5934Hv+3.524 is established.
Claims12
A belt for a continuously variable transmission, in which a pair of left and right ring slots defined in each of a plurality of metal elements are supported on a pair of left and right metal ring assemblies with each formed of a plurality of endless metal rings laminated one on another, respectively, and which is wound around a drive pulley and a driven pulley to transmit a driving force,
- each metal element comprising:
- a neck provided between the pair of left and right ring slots,
- an ear integrally connected to an upper portion of the neck,
- an element body integrally connected to a lower portion of the neck,
- a pair of left and right saddle faces formed on an upper surface of the element body to support a lower surface of the metal ring assembly,
- a pair of left and right V-faces formed at laterally opposite ends of the element body and adapted to contact with the V-groove of said pulleys, and
- a pair of left and right recesses formed in a lower edge of the element body and depressed upwards,
- wherein a height Hs of a non-contact portion formed at an upper portion of the V-face and spaced apart from the V-groove is set larger than a height Hs″ of a non-contact portion formed at a lower portion of the V-face and spaced apart from the V-groove, and
- wherein the height Hs of the non-contact portion formed at the upper portion of the V-face and spaced apart from the V-groove is set larger than the height Hs″ of the non-contact portion formed at the lower portion of the V-face and spaced apart from the V-groove such that the distribution of a bending moment applied to each said saddle face is such that an integration value of a positive bending moment is substantially equal to an integration value of a negative bending moment.
A belt for a continuously variable transmission, in which a pair of left and right ring slots defined in each of a plurality of metal elements are supported on a pair of left and right metal ring assemblies with each formed of a plurality of endless metal rings laminated one on another, respectively, and which is wound around a drive pulley and a driven pulley to transmit a driving force,
- each metal element comprising:
- a neck provided between the pair of left and right ring slots,
- an ear integrally connected to an upper portion of the neck,
- an element body integrally connected to a lower portion of the neck,
- a pair of left and right saddle faces formed on an upper surface of the element body to support a lower surface of the metal ring assembly,
- a pair of left and right V-faces formed at laterally opposite ends of the element body and adapted to contact the V-groove of said pulleys, and
- a pair of left and right recesses formed in a lower edge of the element body and depressed upwards,
- wherein when a height of the V-face is represented by Hv, and a height of a non-contact portion formed at an upper portion of the V-face and spaced apart from the V-groove is represented by Hs, a ratio Hs/Hv is set in a range of 0.149≦Hs/Hv≦0.258, and
- wherein the height Hs of the non-contact portion formed at the upper portion of the V-face and spaced apart from the V-groove is set larger than the height Hs″ of the non-contact portion formed at a lower portion of the V-face and spaced apart from the V-groove such that a distribution of a bending moment applied to each said saddle face is such that an integration value of a positive bending moment is substantially equal to an integration value of a negative bending moment.
A belt for a continuously variable transmission, in which a pair of left and right ring slots defined in each of a plurality of metal elements are supported on a pair of left and right metal ring assemblies with each formed of a plurality of endless metal rings laminated one on another, respectively, and which is wound around a drive pulley and a driven pulley to transmit a driving force,
- each metal element comprising:
- a neck provided between the pair of left and right ring slots,
- an ear integrally connected to an upper portion of the neck,
- an element body integrally connected to a lower portion of the neck,
- a pair of left and right saddle faces formed on an upper surface of the element body to support a lower surface of the metal ring assembly,
- a pair of left and right V-faces formed at laterally opposite ends of the element body and adapted to contact with the V-groove of said pulleys, and
- a pair of left and right recesses formed in a lower edge of the element body and depressed upwards,
- wherein when a height of the V-face is represented by Hv (mm), and a height of a non-contact portion formed at an upper portion of the V-face and spaced apart from the V-groove is represented by Hs (mm), a relationship,
- −0.5265Hv+2.768≦Hs≦−0.5934Hv+3.524
- is established, and
- wherein the height Hs of the non-contact portion formed at the upper portion of the V-face and spaced apart from the V-groove is set larger than the height Hs″ of the non-contact portion formed at a lower portion of the V-face and spaced apart from the V-groove such that a distribution of a bending moment applied to each said saddle face is such that an integration value of a positive bending moment is substantially equal to an integration value of a negative bending moment.
A metal element for a belt of a continuously variable transmission, the metal element comprising:
- a neck provided between the pair of left and right ring slots,
- an ear integrally connected to an upper portion of the neck,
- an element body integrally connected to a lower portion of the neck,
- a pair of left and right saddle faces formed on an upper surface of the element body to support a lower surface of the metal ring assembly,
- a pair of left and right V-faces formed at laterally opposite ends of the element body and adapted to contact with the V-groove of said pulleys, and
- a pair of left and right recesses formed in a lower edge of the element body and depressed upwards,
- wherein a height Hs of a non-contact portion formed at an upper portion of the V-face and spaced apart from the V-groove is set larger than a height Hs″ of a non-contact portion formed at a lower portion of the V-face and spaced apart from the V-groove, and
- wherein the height Hs of the non-contact portion formed at the upper portion of the V-face and spaced apart from the V-groove is set larger than the height Hs″ of the non-contact portion formed at the lower portion of the V-face and spaced apart from the V-groove such that a distribution of a bending moment applied to each said saddle face is such that an integration value of a positive bending moment is substantially equal to an integration value of a negative bending moment.
A metal element for a belt of a continuously variable transmission, the metal element comprising:
- a neck provided between the pair of left and right ring slots,
- an ear integrally connected to an upper portion of the neck,
- an element body integrally connected to a lower portion of the neck,
- a pair of left and right saddle faces formed on an upper surface of the element body to support a lower surface of the metal ring assembly,
- a pair of left and right V-faces formed at laterally opposite ends of the element body and adapted to contact the V-groove of said pulleys, and
- a pair of left and right recesses formed in a lower edge of the element body and depressed upwards,
- wherein when a height of the V-face is represented by Hv, and a height of a non-contact portion formed at an upper portion of the V-face and spaced apart from the V-groove is represented by Hs, a ratio Hs/Hv is set in a range of 0.149≦Hs/Hv≦0.258, and
- wherein the height Hs of the non-contact portion formed at the upper portion of the V-face and spaced apart from the V-groove is set larger than the height Hs″ of the non-contact portion formed at a lower portion of the V-face and spaced apart from the V-groove such that a distribution of a bending moment applied to each said saddle face is such that an integration value of a positive bending moment is substantially equal to an integration value of a negative bending moment.
A metal element for a belt of a continuously variable transmission, the metal element comprising:
- a neck provided between the pair of left and right ring slots,
- an ear integrally connected to an upper portion of the neck,
- an element body integrally connected to a lower portion of the neck,
- a pair of left and right saddle faces formed on an upper surface of the element body to support a lower surface of the metal ring assembly,
- a pair of left and right V-faces formed at laterally opposite ends of the element body and adapted to contact with the V-groove of said pulleys, and
- a pair of left and right recesses formed in a lower edge of the element body and depressed upwards,
- wherein when a height of the V-face is represented by Hv (mm), and a height of a non-contact portion formed at an upper portion of the V-face and spaced apart from the V-groove is represented by Hs (mm), a relationship,
- −0.5265Hv+2.768≦Hs≦−0.5934Hv+3.524
- is established, and
- wherein the height Hs of the non-contact portion formed at the upper portion of the V-face and spaced apart from the V-groove is set larger than the height Hs″ of the non-contact portion formed at a lower portion of the V-face and spaced apart from the V-groove such that a distribution of a bending moment applied to each said saddle face is such that an integration value of a positive bending moment is substantially equal to an integration value of a negative bending moment.
Dependencies are inferred from the claim text.