JPH11166561A - Hydraulic coupling structure for outboard-inboard engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the whole length of a hydraulic coupling so as to constitute the hydraulic coupling compactly on the whole by integrating hydraulic equipments for operating oil and lubricating oil of a hydraulic clutch in the hydraulic coupling, in one case of the hydraulic coupling. SOLUTION: Hydraulic equipments for operating oil and the lubricating oil of a hydraulic clutch 13 are disposed in one case 17 of a hydraulic coupling 3. An input shaft 11 is arranged inside an output shaft 12, formed in hollow shape, of the hydraulic coupling 3. A hydraulic clutch 13 is interposed between the input shaft 11 and the output shaft 12, and bearing members 18, 19 are disposed at the inner periphery and outer periphery of the output shaft 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic joint structure for an inboard / outboard motor mounted on a small boat or the like,
The present invention relates to a hydraulic coupling structure for miniaturizing a hydraulic coupling.

[0002]

2. Description of the Related Art Conventionally, as a propulsion drive device mounted on a small boat or the like, a drive device equipped with a propeller is movably mounted on a hull, and an engine for driving the propeller is fixed in the hull. An inboard / outboard motor in which a propulsion power transmission mechanism for transmitting the rotation of an engine to a propeller is provided from the hull to the outside of the hull is widely known. In such an inboard / outboard motor, a hydraulic coupling including a hydraulic clutch is arranged between an engine installed in the hull and a drive device installed outside the hull. For example, as described in JP-A-8-216988.

[0003]

However, in the above-mentioned hydraulic coupling disposed in the inboard / outboard motor, the front end of the hydraulic clutch is connected to the rear end of the input shaft to which rotation from the engine is transmitted. Since the rear end of the hydraulic clutch was connected to the front end of an output shaft that transmits the input rotational driving force to the drive device, the input shaft, the hydraulic clutch, and the output shaft were arranged in a straight line. The total length of the hydraulic coupling was long. In addition, suction filters and hydraulic oil pumps, which are hydraulic devices for hydraulic oil and lubricating oil in the hydraulic clutch in the hydraulic coupling, are arranged at various positions before and after the hydraulic coupling. The total length was longer. As described above, the conventional hydraulic coupling has a large overall length and a large overall size.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in the inboard / outboard motor in which the hydraulic coupling composed of the hydraulic clutch is disposed between the engine installed in the hull and the drive device installed outside the hull, And the lubricating oil hydraulic devices are collectively disposed in the case of the hydraulic joint.

According to a second aspect of the present invention, there is provided an inboard / outboard motor in which a hydraulic coupling comprising a hydraulic clutch is disposed between an engine installed inside the hull and a drive device installed outside the hull. The input shaft is disposed inside the hollow output shaft, a hydraulic clutch is interposed between the input shaft and the output shaft, and bearing members are disposed on the inner and outer circumferences of the output shaft. That is.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is a side view showing an inboard / outboard motor having a hydraulic coupling structure according to the present invention, and FIG. 2 is a side sectional view showing the same hydraulic coupling.

First, a schematic configuration of an inboard / outboard motor having a hydraulic coupling structure according to the present invention will be described. 1, an inboard / outboard motor transmits an engine 2 fixed in a hull 1, a drive device 4 movably attached to a rear end of the hull 1, and a rotational force of the engine 2 as propulsion. Hull 1 for
It is constituted by a propulsion power transmission mechanism disposed between the inside and the drive device 4 outside the hull. The drive device 4 is attached to the rear tail plate of the hull 1 so as to be rotatable in the vertical and horizontal directions, and a propeller 5 is attached to the lower portion of the drive device 4 so as to be rotatable.

The propulsion power transmission mechanism for transmitting the rotation of the engine 2 to the propeller 5 has a hull 1 inside and a hull 1 outside connected by a universal joint or the like. A hydraulic joint 3 is connected to a rear end of the hydraulic joint 3 so that a distal end of a universal joint or the like is connected to an output portion of the hydraulic joint 3. On the other hand, on the outside of the hull 1 of the propulsion power transmission mechanism,
The rear end of the universal joint or the like is connected to the propeller 5 via a clutch mechanism, a bevel gear, or the like. The drive device 4 is configured by these components, and the rotation of the engine 2 is transmitted to the propeller 5. The hydraulic joint 3 has an input shaft 11 to which rotation from the engine 2 is input, and an output shaft 1 to which an output part of the hydraulic joint 3 is connected, such as a universal joint.
2 is provided, and a hydraulic clutch 13 is interposed between the input shaft 11 and the output shaft 12 so that transmission of rotation input to the input shaft 11 to the output shaft 12 can be connected and disconnected. Make up.

Next, the structure of the hydraulic joint 3 will be described. In FIG. 2, an input shaft 11 to which rotation from the engine 2 is input, and an output shaft 12 for transmitting the rotation of the input shaft 11 to the drive device 5 include a case body 15 and a case lid 1.
6 is rotatably supported by a case 17. The output shaft 12 is formed in a substantially cylindrical shape having a hollow inside, and a rear portion of the input shaft 11 is fitted into a hollow portion of the output shaft 12. Bearing members 18 are provided on the inner periphery of the hollow portion of the output shaft 12, and the input shaft 11, which is fitted into the output shaft 12, rotates on the output shaft 12 via the bearing members 18. The input shaft 11 is freely supported, and the front part of the input shaft 11 is supported by the case body 15 via the bearing member 20. Further, a bearing member 19 is provided on the outer periphery of the output shaft 12, and the output shaft 12 is rotatably supported on the case lid 16 via the bearing member 19.

The input shaft 11 has a protruding portion 29 that protrudes radially outward in front of a portion where the input shaft 11 is fitted into the output shaft 12. The protruding portion 29 extends rearward, and the output shaft 1
2 overlaps with the front end of the output shaft 12 in the outer circumferential direction. Then, the hydraulic clutch 13 is interposed between the protrusion 29 of the input shaft 11 and the front end of the output shaft 12,
The transmission of the rotation of the input shaft 11 to the output shaft 12 is turned on / off by turning on / off the hydraulic clutch 13.

The input shaft 11 supported and rotated by the engine 2 has a hydraulic clutch 13
Since the rotation is not transmitted to the output shaft 12 in the FF state,
The output shaft 12 is stationary, and the input shaft 11 is
8 and 18 and the bearing member 20. On the other hand, when the hydraulic clutch 13 is in the ON state, the input shaft 11 and the output shaft are integrally driven to rotate, so that the input shaft 11 and the output shaft are integrally formed with the bearing members 19 and 20. Will be supported by

As described above, the input shaft 11 is fitted into the hollow portion of the output shaft 12, and the hydraulic clutch 13 is interposed in the overlapping portion between the input shaft 11 and the output shaft 12, and
Since the bearing members 18 and 19 are provided on the inner and outer circumferences of the shaft 2 to support the output shaft 12 and the input shaft 11, the connection between the output shaft 12 and the input shaft 11 by the hydraulic clutch 13 is formed. The length can be shortened, the entire length of the hydraulic joint 3 can be shortened, and the hydraulic joint 3 can be configured to be compact as a whole.

An oil chamber 21 is formed in a space formed below the case 17 composed of the case main body 15 and the case lid 16, and a suction filter 22 is provided in the case main body 15 in front of the oil chamber 21. Is arranged. A hydraulic oil pump 23 composed of an internal pump or the like is attached to the front end of the case body 15.
3 and the suction filter 22 are connected by a suction hole 31 formed in the case body 15.

Further, a valve case 24 containing, for example, a proportional solenoid valve 25 and a directly connected solenoid valve 26 is disposed on the upper portion of the case main body 15, and the hydraulic oil pump 23 and the valve case 24 are connected to each other. They are connected by a discharge hole 32 formed in the case body 15. Also, the case body 15 includes
A hydraulic oil hole 33 and a lubricating oil hole 34 extending from the valve case 24 toward the input shaft 11 are formed.
1 is provided with a working oil pipe 35 and a lubricating oil pipe 36. A transition portion 27 is formed at a boundary between the case body 15 and the input shaft 11 to communicate the hydraulic oil hole 33 with the hydraulic oil pipe 35 and to communicate the lubricating oil hole 34 with the lubricating oil pipe 36. doing.

In the hydraulic coupling 3 configured as described above, the oil in the oil chamber 21 is sucked through the suction filter 22 by the hydraulic oil pump 23 attached to the case body 15, and the sucked oil is It is discharged from the hydraulic oil pump 23 to the valve case 24 through the discharge hole 32. After the flow of the oil in the valve case 24 is controlled by the proportional solenoid valve 25 or the direct connection solenoid valve 26 or the pressure is regulated by the pressure regulating valve, the oil is transferred to the transfer portion 27 through the working oil hole 33 and the lubricating oil hole 34.・ Pressurized to the working oil pipe 35 and the lubricating oil pipe 36 via 27. The oil pressure-fed to the hydraulic oil pipe 35 is supplied as hydraulic oil to the hydraulic clutch 13 to operate the hydraulic clutch 13, and the oil pressure-fed to the lubricating oil pipe 36 is used as lubricating oil in a friction plate portion of the hydraulic clutch 13. And lubricated.

As described above, the suction filter 22, the hydraulic oil pump 23, and the transfer devices, which are hydraulic devices for supplying the hydraulic oil and the lubricating oil of the hydraulic clutch 13 from the oil chamber 21 to the hydraulic clutch 13, are provided. Part 27, case 27
, And a valve case 24 containing solenoid valves 25 and 26 and a pressure regulating valve is disposed above the case 17, and a suction hole 31 and a discharge hole for connecting these hydraulic devices are provided. By forming passages such as 32, hydraulic oil holes 33, and lubricating oil holes 34 in the case body 15 at the front part of the case 17, the total length of the hydraulic joint 3 can be shortened, and the hydraulic joint 3 It can be made compact.

[0017]

As described above, the present invention has the following advantages. That is, as described in claim 1, the hydraulic equipment for the hydraulic clutch and the lubricating oil in the hydraulic coupling are collectively disposed in the case of the outer hydraulic coupling, so that the total length of the hydraulic coupling can be shortened. As a result, the hydraulic coupling could be made compact as a whole.

Further, as set forth in claim 2, the hydraulic coupling includes:
Since the input shaft is arranged inside the hollow output shaft, a hydraulic clutch is interposed between the input shaft and the output shaft, and bearing members are arranged on the inner and outer circumferences of the output shaft. The length of the connection between the output shaft and the input shaft by the hydraulic clutch can be reduced, the overall length of the hydraulic joint can be shortened, and the hydraulic joint can be made compact as a whole.

[Brief description of the drawings]

FIG. 1 is a side view showing an inboard / outboard motor having a hydraulic coupling structure according to the present invention.

FIG. 2 is a side sectional view showing the same hydraulic coupling.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hull 2 Engine 3 Hydraulic coupling 4 Drive device 11 Input shaft 12 Output shaft 13 Hydraulic clutch 15 Case main body 16 Case lid 17 Case 18, 19, 20 Bearing member 22 Suction filter 23 Hydraulic oil pump 26 Valve case 27 Transfer part 29 Projection Part 31 Suction hole 32 Discharge hole 33 Hydraulic oil hole 34 Lubricating oil hole

Claims (2)

[Claims] 1. An inboard / outboard motor in which a hydraulic coupling comprising a hydraulic clutch is disposed between an engine installed inside a hull and a drive device installed outside the hull, a hydraulic oil and a lubricating oil for the hydraulic clutch. A hydraulic coupling structure for an inboard / outboard motor, wherein the hydraulic equipments are collectively disposed in a case of the hydraulic coupling. 2. An inboard / outboard motor in which a hydraulic coupling comprising a hydraulic clutch is disposed between an engine installed inside the hull and a drive device installed outside the hull, wherein the hydraulic coupling is formed hollow. A ship, wherein an input shaft is disposed inside an output shaft, a hydraulic clutch is interposed between the input shaft and the output shaft, and bearing members are disposed on inner and outer peripheries of the output shaft. Hydraulic joint structure for internal and external units.