A synchronising device
AssigneeVolvo Truck Corporation
InventorRonald OLSSON
Life of this patent
Estimating the term…
Abstract
A synchronising device is provided for synchronising a first rotatable part with a second rotatable part adjacent to the first rotatable part. The synchronising device includes a first part provided with an engaging sleeve and a second part provided with a synchroniser ring. The synchronising device has at least one positioning resilient member which is arranged to act upon the synchroniser ring and the second part, in order to allow a design with few parts and also to presynchronise the synchronising ring with the second part. A transmission including such a synchronising device is also provided.
Claims15
A synchronising device (1) for synchronising a first rotatable part with a second rotatable part adjacent to said first rotatable part, wherein said synchronising device (1) comprises:
- a first part (100) provided with an engaging sleeve (110), and
- a second part (200) provided with a synchroniser ring (210), wherein said engaging sleeve (110) is
- provided with a first set of internal teeth (111) enabling a rotationally fix and axially displaceable arrangement upon said first part (100),
- provided with a first conical friction surface (112), and
- is adapted to be positioned in a first and a second axial position, wherein said first axial position said first set of internal teeth (111) engages only with said first part (100) and in said second axial position, said first set of internal teeth (111) engages with both said first and said second part (100, 200), wherein said synchroniser ring (210) is
- provided with a mating conical friction surface (213), wherein said first conical friction surface (112) and said mating conical friction surface (213) are adapted to interact with each other in order to synchronise said engaging sleeve (110) and said synchroniser ring (210), i.e. the first and second parts (100, 200),
- provided with a second set of internal teeth (211) enabling an arrangement upon said second part (200), wherein said second set of internal teeth (211) is provided with a first blocking surface (212) adapted to interact with a corresponding second blocking surface (202) upon said second part (200),
- adapted to be positioned in a first and a second axial position, wherein in said first axial position said blocking surfaces (212, 202) can interact with each other and said second axial position enables engagement of the engaging sleeve (110) with the second part (200), and
- adapted to be positioned in a first and a second rotational position relative to the second part (200), wherein said first rotational position enables said blocking surfaces to interact with each other and said second rotational position enables an axial displacement of said synchroniser ring (210), wherein
- said synchroniser device (1) is characterised in that,
- at least an axial positioning resilient member (220) is arranged to act upon said synchroniser ring (210) and said second part (200), wherein said axial positioning resilient member (220) is arranged such relative said synchroniser ring (210) and said second part (200) that said axial positioning resilient member (220) exercise a force upon said synchroniser ring (210) in direction towards its first axial position.
A synchronising device (1) according to any of the preceding claims, wherein a plurality of axial positioning resilient members (220) is provided substantially evenly spread about said synchroniser ring (210).
A synchronising device according to any of the preceding claims, wherein said synchroniser ring (210) is further provided with at least one rotational positioning resilient member (221), which acts upon a rotational reaction surface (204) of said second part (200), wherein said rotational positioning resilient member (221) and said rotational reaction surface (204) are arranged such relative each other, that said rotational positioning resilient member (221) exercises a force upon said synchroniser ring (210) in direction towards its first rotational position.
A synchronising device (1) according to any of the preceding claims 8-12, wherein a plurality of rotational positioning resilient members (221) are provided and substantially evenly spread about the synchronising ring (210).
A synchronising device (1) according to any of the preceding claim 1-13, wherein engaging sleeve (110) is provided with a groove (113) provided in an axial central position among said first set of internal teeth (111), wherein said groove (113) is adapted to interact with a detent resilient member (102) arranged in said first part (100), and said detent resilient member (102) acts radially outwards such that it holds said engaging sleeve (110) in its first position.
A synchronising device (1) according to claim 14, wherein said detent resilient member (110) is able to hold said engaging sleeve (110) in its second position, by protruding outside said first set of internal teeth (111).
Dependencies are inferred from the claim text.