Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
  • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
  • B63H23/08—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing with provision for reversing drive
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
  • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
  • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
  • F16H3/14—Gearings for reversal only
  • F16H3/145—Gearings for reversal only with a pair of coaxial bevel gears, rotatable in opposite directions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
  • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
  • B63H2023/0283—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing using gears having orbital motion
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/19—Gearing
  • Y10T74/19023—Plural power paths to and/or from gearing
  • Y10T74/19074—Single drive plural driven
  • Y10T74/19107—Nonparallel
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/19—Gearing
  • Y10T74/19219—Interchangeably locked
  • Y10T74/19377—Slidable keys or clutches
  • Y10T74/19414—Single clutch shaft
  • Y10T74/19484—Single speed forward and reverse
  • Y10T74/19493—Bevel gears

Definitions

• the present invention relates to a transmission device, especially for boat motors, comprising a pair of intersecting shafts, drivingly connected to each other by means of at least one pair of bevel gears, a reversing mechanism driven by said shafts and having hydraulically operated multi-disk clutch means, by means of which the rotational direction of an output shaft is reversible.
• an input shaft drives via a double bevel gearing, an intermediate shaft, which in turn via an additional bevel gear mechanism, drives an output shaft, which can either be the propeller shaft itself or be provided with the flange intended to be coupled to a propeller shaft.
• the reversing mechanism is integrated into the bevel gear mechanism by it having two freely rotatably mounted bevel gears which can be automatically locked by means of clutch means to the intermediate shaft and which engage a bevel gear on the input shaft.
• the clutch means used were inter alia cone clutches, comprising a double clutch cone displaceable on the intermediate shaft between the bevel gears, whereby the clutch cone is displaceable into engagement with a facing conical clutch surface on the respective bevel gear.
• the displacement of the clutch cone was achieved mechanically and special mechanical devices utilizing the rotation of the shaft were used to overcome the tendancy to self locking which occurs in such clutches and which can create problems with disengagement, especially at high motor torgue.
• the purpose of the present invention is to achieve in a transmission device of the type described by way of introduction with multi-disk clutches, an arrangement which enables the entire transmission device to be made lighter, less expensive and more compact than the above described known transmission device.
• This is achieved according of the invention by virtue of the fact that the multi-disk clutch means are arranged on the side of at least one bevel gear facing away from the point of inter- section between the rotational axis of the first mentioned shafts.
• the clutch means are moved from a location where they interfere with the gears of the bevel gearing to a location outside the double bevel gearing, which means that they will not effect the dimen- sioning of the bevel gears.
• FIG 1 designates a reversing transmission for a boat motor insulation of purely inboard type.
• the trans ⁇ mission has an input shaft 2 designed to be coupled to the crank shaft (not shown) of the motor and an output shaft 3 designed to be coupled to a propeller shaft (not shown).
• the shafts 2, 3 and an intermediate shaft or secondary 4 shaft are mounted in a housing 5.
• the input shaft is provided with a bevel gear 6 engaging 2 double gears 7 and 8, which are mounted on needle bearings 9 and
• the bevel gears 7 and 8 respectively rotatably mounted on the intermediate shaft 4 cooperate with individual clutch devices 13 and 14 respectively.
• the clutches 13 and 14 are mirror imaged but otherwise identical, and therefore identical components have been given the same reference numerals.
• Gear 7 and 8 are each solidly joined on their sides facing away from each other to individual bowl shaped elements 15 with which a number of clutch disks 16 are non-rotatably but axially displaceably joined.
• the disk carrier 17 is non-rotatably joined to the intermediate shaft 4 and carries non-rotatable dis ⁇ placeable disks 18.
• a hydraulic piston 19 is disposed on one side of each package of disks and delimits together with a cylinder element 20 a chamber 21 for hydraulic fluid.
• the respective gear 7, 8 is locked to the inter ⁇ mediate shaft 4 by pressurizing the associated chamber 21 so that its piston 19 compresses the disk package in the example shown in Figure 1, the upper clutch 13 of the bevel gear 7 is engaged , so that torque is transmitted via this bevel gear, while the lower clutch 14 is dis ⁇ engaged.
• Hydraulic- fluid is supplied to the respective chamber 21 by a hydraulic pump 22 driven by the input shaft 2 via a control valve 23 and channels 24 and 25 in the intermediate shaft 4.
• the clutches 13, 14 are of wet disk type, and are provided with fluid via a channel in the intermediate shaft 4. When reversing the rotational direction of the output shafts 3, the upper clutch 13 is released, whereafter the lower clutch 14 is engaged.
• FIG 2 shows an embodiment of a transmission according to the invention in which the clutches 13 and 14 are consolidated into a single unit 30, which is placed below the lower bevel gear 8.
• the upper bevel gear 7 is in this case non-rotatably joined to a shaft end which forms a part 42 of an intermediate shaft 4a, 4b and is rotatable relative to part 4b.
• the upper bevel gear 7 is lockable by means of the clutch portion 13 to the axial portion 4b, while the lower bevel gear 8, which is rotatably mounted on the shaft portion 4a can be locked relative the shaft portion 4b by means of the clutch portion 14.
• the rest of the components in Figure 3 corresponding to these in Figure 1 have been given the same reference numerals as in Figure 1.
• the bevel gear 6 engages the input shaft 2 which has a single bevel gear 8 which is non-rotatably fixed to a shaft portion 4a.
• the reversing gear is provided in the form of a planetary transmission 40 with double planetary gear sets 41 and 42, by means of which the rotational direction of the shaft portion 4b can be reversed.
• the shaft portion 4a drives the sun pinion 43 of the planetary transmission and can be locked by means of the clutch 14 to the planetary gear carrier 44 to lock the shaft portions 4a and 4b together into a unit.
• the ring gear 45 of the planetary transmission can be locked to the housing 1 to reverse the rotational direction of the shaft portion 4b relative to the shaft portion 4a.
• Figure 4 shows an embodiment which distinguishes from that shown in Figure 1 only in that the two releasable bevel gears 7 and 8 with associated clutches 13, 14 are mounted on the input shaft 2 while the bevel gear 6 is fixed to an intermediate shaft 4.
• the transmission according to the invention can be included in a module system of the type described in SE- A-417 075, and thus be used both in entirely inboard installations of the design shown in Figure 1 and for outboard drive units of the Aquamatic® type. Especially in the latter type, it is desirable to keep dimensions and weight at as low a level as possible.
• Such an outboard drive unit for double counter rotating propellers 50, 51 is shown in Figure 5. Components with counterparts in Figure 1 have been given the same reference numerals as in Figure l.
• the intermediate shaft 4 drives via bevel gears 52, 53 and 54 two counter- rotating propeller shafts 55, 56.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Ocean & Marine Engineering (AREA)
• Structure Of Transmissions (AREA)
• Gear Transmission (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20383710

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (12)

Citations (2)

Family Cites Families (3)

• 1991
  • 1991-09-12 SE SE9102646A patent/SE469292B/sv not_active IP Right Cessation
• 1992
  • 1992-09-11 CA CA002116124A patent/CA2116124A1/en not_active Abandoned
  • 1992-09-11 EP EP92919742A patent/EP0603291B1/en not_active Expired - Lifetime
  • 1992-09-11 JP JP5504728A patent/JPH06510837A/ja active Pending
  • 1992-09-11 DE DE69217232T patent/DE69217232T2/de not_active Expired - Lifetime
  • 1992-09-11 US US08/204,272 patent/US5509863A/en not_active Expired - Lifetime
  • 1992-09-11 WO PCT/SE1992/000627 patent/WO1993005317A1/en active IP Right Grant
  • 1992-09-11 AU AU25909/92A patent/AU2590992A/en not_active Abandoned

Patent Citations (2)

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