JPS5950556B2 - Marine propulsion machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to a marine propulsion device, and more specifically, the present invention relates to a marine propulsion device configured to allow vertical tilting and horizontal rotation, and connected to a drive shaft via a reversing transmission. It relates to devices such as outboard motors and stern drives that have a propellant with a propulsion shaft.

The invention also relates to mechanical and hydraulic arrangements for moving such a reversing transmission.

Heretofore, due to slow engagement and incomplete engagement, various reversing transmissions have been prone to considerable wear and tear.

Moreover, such wear increases correspondingly as the load on the reversing transmission increases.

A known example of a configuration for operating a reversing mechanism in a marine propulsion device is disclosed in U.S. Pat.
．． No. 119.277 and No. 3.623.583, respectively.

The present invention includes a reversing transmission that moves between a neutral position and a drive position, and a force that is mechanically coupled to the reversing transmission and that is transmitted to the reversing transmission via a mechanical linkage to move the transmission to the neutral position. Another object of the present invention is to provide a marine propulsion device including a mechanical linkage for moving the mechanical linkage from a neutral position and a hydraulic device for assisting in moving the mechanical linkage to move the reversing transmission.

Further according to the invention, the mechanical linkage consists of a first part and a second part, the two parts being separated from each other after an initial movement of the first part with respect to the second part. connected by means that limit the amount of movement.

The first part also constitutes a valve member, which controls the actuation of the hydraulic auxiliary means and, during the initial movement of the mechanical linkage, continues the hydraulically assisted movement of the mechanical linkage. The control aperture member is adapted to move relative to the control aperture member to cause the control to occur.

Thus, upon activation, the first movement of the mechanical linkage activates the hydraulic means.

The hydraulic means is then under operational control of the first part to generate a force for continued movement of the mechanical linkage and, after engagement of the transmission, to keep the transmission continuously engaged. to work.

Furthermore, according to the present invention, by providing the mover, the mechanical link mechanism can mechanically reliably operate the reverse transmission both to and from the neutral position.

This mover is provided in an opening extending in the axial direction of the propulsion shaft, rotates in cooperation with the propulsion shaft, and moves in the axial direction with respect to the propulsion shaft.

The slider is also coupled to the clutch dog for movement therewith.

The mechanical linkage constitutes the second part described above, and includes an actuating rod that moves in a direction transverse to the propulsion axis, and in response to movement of the actuating rod in one direction transverse to the propulsion axis, the axis of the propulsion shaft changes. The mover is provided with an actuating rod so as to move the mover in one direction along the propulsion axis while moving the mover in the other direction along the axis of the propulsion shaft in response to movement of the actuator in the other direction across the propulsion axis. and means for rotating the slider relative to the operating rod.

According to an embodiment of the present invention, the coupling means is provided on the plunger guided to move in the axial direction of the propulsion shaft, the plunger and the slider, and is configured to move the plunger and the slider together in the axial direction of the propulsion shaft. and means for causing rotation between the two.

The plunger and actuating rod are provided with interengaging means for causing plunger movement as the actuating rod moves.

The hydraulic device assisting the movement of the mechanical linkage following the initial linkage movement comprises the aforementioned valve member telescopingly surrounding a portion of the operating rod and the aforementioned opening means. Provided in a telescopic manner so as to surround the member,
and a piston telescopically engaged within a cylinder member attached to the propellant.

The piston is provided on its outer surface with a centrally located recess having an outer cylindrical surface that engages a radially inwardly extending projection of the cylinder, dividing the recess into an upper part and a lower part. .

The upper and lower recesses of the piston each have a step in the valve member on each side of the recess that communicates through a suitable opening with the inner diameter of the actuating rod despite relative movement between the actuating rod and the valve member. It communicates with the upper and lower openings controlled by.

The actuating rod has an opening that communicates with the outlet of the engine-driven fluid pump despite movement of the actuating rod.

The means for connecting the valve member and the actuating rod for limited original movement serve to connect the piston and the actuating rod for movement together.

Thus, upon actuation, the initial movement of the valve member by the operator compresses fluid selectively into the upper piston recess or the lower piston recess, thereby driving the piston and associated actuating rod relative to the cylinder and propellant. to move the plunger and the connected slider in the axial direction.

Also according to the invention, the mechanical linkage is provided with releasable means, such that the mechanical linkage does not move from the position which brings the reversing transmission to the neutral position in the absence of a force exceeding the predetermined amount mentioned above. That's what I do.

According to one embodiment of the invention, such means are provided between the slider and the propulsion shaft, and allow the operator to intuitively know when the reversing transmission is in the neutral state. .

As previously mentioned, releasable means for releasably arresting movement of the linkage require a predetermined amount of force to effect movement from the neutral position.

According to the invention, such a large force is provided by a hydraulic device.

This hydraulic system rapidly and reliably drives the clutch dog into engagement and maintains such engagement unless the engine is running and the operator engages the mechanism.

Such rapid and complete engagement of the clutch dog avoids severe wear on the reversing gear and prolongs the life of the clutch.

In addition, hydraulic devices facilitate movement, especially in high horsepower device machines, by requiring operators to operate them.

If, for any reason, the hydraulic system fails, the mechanical linkage will still work and, with sufficient operator force to overcome the releasable means that prevent the reversing transmission from moving from the neutral position, The transmission force through the link mechanism moves the reversing transmission from the neutral state.

A primary object of the present invention is to provide a hydraulic assist mechanism for moving a reversing transmission within an outboard motor.

Another object of the invention is to provide a hydraulically assisted mechanical linkage for moving a reversing transmission.

Another aspect of the invention is to effect the movement of the reversing transmission and to
providing a mechanical linkage including a limited free movement connection between two link members, in which a hydraulic device operates during the free movement to provide a continuous link effective to change the state of a reversing transmission; Its purpose is to help move the mechanism.

A further object of the invention is to provide a reversing transmission having releasable stop means which are hydraulically assisted and which prevent the reversing transmission from moving out of a neutral state unless a predetermined amount of force is used. is to provide.

Yet another object of the invention is to provide a mechanical linkage having a translator coupled to an actuation rod that moves with the propulsion shaft, moves axially relative to the propulsion shaft, and moves transversely to the propulsion shaft. The object of the present invention is to surely move a mover in response to the movement of an operating rod and rotate the mover relative to the operating rod.

The details of the present invention will be described below with reference to the drawings.

Before describing the details of the present invention, it should be noted that the present invention is not only applicable to other implementations, but also can be implemented in various ways.
It is meant that the invention is not limited to the structures and configurations described and illustrated below.

Further, the terms used herein are used for explanation and are not intended to limit the present invention in any way.

The marine propulsion device according to the invention can be of various types, such as an outboard motor or a stern drive.

The outboard propulsion machine shown in FIG. 1 is attached to a propulsion body 13 and a ship's hull (not shown), and is connected to the propulsion body 13 so that the propulsion body can rotate horizontally and vertically with respect to the ship. An outboard motor 1 comprising means for causing rocking motion.
It is represented by 1.

Although other configurations may be used, the outboard motor 11 described in detail here is connected to the rotating bracket 21 via an inclined pin 19, and the tightening is performed on the rotating bracket 21 with respect to the bracket 17.
The said tightening bracket 1 is attached so as to be able to swing in the vertical direction.
Contains 7.

The swivel bracket 21 is connected to the propulsion body via a center pin 23 so as to be able to move the propulsion body 13 relative to itself in the steering direction.

The propulsion shaft 27 (FIG. 6) is rotatably provided on the propulsion body 13, and a propeller 29 (see FIG. 6) rotates together with the propulsion shaft 27.
Figure 1).

A drive shaft 31 (FIG. 6) is also provided within the propulsion body 13 and extends transversely to the propulsion shaft 27, having a bevel gear 32 at the lower end of the drive shaft.

The reversing clutch or reversing device 33 provided to connect the drive shaft 31 to the propulsion shaft 27 can be represented in a variety of shapes, and in the illustrated construction it is arranged in spaced relation to the axial direction of the propulsion shaft 27. It has a pair of bevel gears 37, 39 mounted thereon concentrically with and rotating independently of the propulsion shaft and meshing with bevel gear 32.

The clutch dog 41 is provided in the reversing transmission 33 and is supported by the propulsion shaft 27 located between the bevel gears 37.39, rotates in cooperation with the propulsion shaft, and disengages from the engagement with the bevel gears 37.39. a forward drive position (to the left of the neutral position) where the center is in drive rotational engagement with the bevel gear 37 (Fig. 6), and a backward drive position (to the right of the neutral position) where the center is in drive rotational engagement with the bevel gear 39. ) along the axial direction of the propulsion shaft 27.

In accordance with the present invention, a mechanical linkage 53 is provided which serves to actively move clutch dog 41 through neutral, forward and reverse positions.

This mechanical linkage includes a mover 51 that moves in the axial direction of the propulsion shaft 27 and an operating rod that is supported by the propulsion body 13 and moves in the transverse direction of the propulsion shaft 27.

Although various configurations are possible, in the one shown, the propulsion shaft 27 has an opening 59 passing through the front for receiving the slider 51.

At the rear end, the slider 51 is connected to the clutch dog 41 by a transverse pin 61 passing through diametrically opposed elongated holes 63 in the propulsion shaft 27 .

The plunger 67 is located at the front end of the mover 51, and is guided by the bearing of the propelling body 13, that is, by the guide device, so as to move in the axial direction of the propelling shaft 27.

According to the invention, means are provided in the plunger 67 and in the actuating rod 57 for moving the plunger 67 in the axial direction of the propulsion shaft 27 as the actuating rod 57 moves transversely to the propulsion axis.

Further, a means is provided to reliably connect the mover 51 to the plunger 67 so that they can move together in the axial direction of the propulsion shaft 27, and also allow relative rotation between the mover and the plunger.

Although various configurations may be used, the structure shown in the figure (
6 and 7), the plunger 67 is
With a counterbore 77, it has a cylindrical end with a hole defined by an annular shoulder 71 and a cylindrical wall 73.

An annular groove is formed in the cylindrical wall 73 for receiving a retaining ring 79.

The washer 81 is provided inside the retaining ring 79 and close to the retaining ring.

The front end of the mover 51 extends into the hole and has an end portion 83;
Further, this end portion extends from the annular shoulder portion 85 and forms a threaded portion with a gradually decreasing diameter at the distal end.

This threaded portion extends to the counterbore 77 and is keyed, caulked, or fixed to prevent the nut 87 from being disassembled even after being received and assembled.

Between the nut 87 and the annular shoulder 85 of the slider 51, and between the annular shoulder 71 and the washer 89, thrust bearings are provided, each consisting of opposing annular races 89, 91 and an intermediate bearing body. There is.

Together with the corresponding structure on the slider 51 and in the hole of the plunger 67, the thrust bearing ensures the movement of the slider 51 together with the plunger 67 in the axial direction of the propulsion shaft 27 and the rotation between the slider and the plunger. Have them do it.

That is, when plunger 67 moves to the left in FIG.

When the plunger 67 moves to the right as viewed in FIG. Press the shoulder 85.

There are various configurations for moving the plunger 67 in the axial direction of the propulsion shaft 27 as the operating rod 53 is moved in the transverse direction of the propulsion shaft, but in the illustrated structure, the left portion of the plunger A cam portion 97 is provided extending from the cylindrical portion, the cam portion being generally semi-cylindrical and having a substantially diametrically extending surface 99.

This surface 99 has an inclined groove 111 on the surface, and the operating rod 57
A cam 113 (FIG. 2) extending at an angle from a generally flat surface 117 of a lower end 119 having a generally semi-cylindrical shape is received therein.

The side surfaces of the inclined groove 111 form a pair of cam surfaces facing each other.1. The side surfaces of the cam 113 also form a pair of cam surfaces, and the cam surfaces of these inclined grooves and the cam surface of the cam 113 can exert a cam action both when the operating rod 57 moves upward and downward. , this causes the plunger 67
is moved in the axial direction of the propulsion shaft 27.

In this way, although the configuration using a pair of cam surfaces formed on the inclined groove 111 and the cam 113 is a simple cam mechanism that does not take up much space, the reciprocating movement of the plunger 67 can be made in one direction. It is possible to actively drive the movement in any direction without relying on springs or the like.

As shown, the actuating rod 57 is supported above and below the cam 113 for movement transversely to the propulsion axis.

The actuating rod 57 is mechanically coupled at its upper end to a link 121 which is moved by the operator, as will be explained in more detail below, and can be moved mechanically and reliably by vertically or axially moving the actuating rod 57. The child 51 and the connected clutch dog 41 are moved to activate the reversing transmission 33.

Although various other configurations are possible, in the construction shown, the link 121 extends vertically in the propellant (FIG. 1) and the actuating lever 123 is movable through a hole in the center pin 23. It has reached the connection part with.

The link 121 is fixed at its lower end to a member 127 for joint vertical movement, and this member 127 is fixed at its lower end to a member 127 which absorbs the initial fixed amount of movement that occurs between the member 127 and the actuating rod as a result of the common vertical movement. Since the amount of movement is limited to a predetermined amount only, the mechanism 53 is connected to the actuating rod by a means that allows movement from the actuating lever 123 to the clutch dog 41. It extends almost continuously, and the clutch dog 41 can also be effectively moved mechanically.

Although there are various configurations for connecting the actuating rod 57 to the member 127 so as to initiate movement before a common movement occurs, in the structure shown, the member 127 is generally cylindrical and is located above the actuating rod 57. arranged for telescopic engagement on the outside of the section.

This member 127 further extends from the actuating rod 57 and extends through a diametrically opposed slightly longer slot 133 of the pin 1.
I have 31.

As discussed below, the just-mentioned member 127 can serve as a valve member of the hydraulic device 141 to assist in the movement of the actuating rod 57 to facilitate movement.

A hydraulic device 141 for hydraulically assisting the movement of the actuating rod, i.e. for assisting the movement action, is provided by the propellant 13 in a surrounding relationship with the actuating rod 57 and the valve member 127, which are associated in a telescopic manner. It consists of a fixedly supported cylinder 143 and a piston 147 with opening means for allowing pressurized fluid to move the piston 147 for subsequent movement of the cylinder 143 and the actuating rod 57.

The piston is arranged for external telescopic engagement with valve member 127 and internal telescopic engagement with cylinder 143 .

The hydraulic device 141 includes means for connecting the piston 147 and the operating rod 57 for common movement, and
Valve member 1 adapted to move relative to opening means 47
Means provided at 27 are provided.

Furthermore, means are provided for supplying pressurized fluid to the opening means under control of the valve member.

The cylinder 143 is provided between two cylindrical upper and lower inner wall surfaces 151 and 153 that are spaced apart in the axial direction, extends radially inward, and is provided between the wall surfaces 151 and 153. A protrusion 157 is provided.

The piston 147 has two axially spaced upper ends 161 and a lower end 163 which telescopically engage the walls 151, 153 of the cylinder 143, respectively, and the upper end 161 of the piston. and the lower end 16
3 is provided with a diametrically extending annular recess 167, the outer cylindrical surface 169 of which engages with the cylindrical surface 159 of the projection 157.

This engagement divides the recess 167 into an upper part and a lower part.

As shown in detail in the drawings, the upper end 161 of the piston is
Annular member 16 threaded into the reduced diameter section 170 of the piston
formed by 8.

The length of the annular recess 167 in the axial direction is greater than the length of the protrusion 157 provided on the cylinder 143 in the axial direction.

The opening means provided in the piston 147 consists of two axially spaced and radially extending upper openings 171 and lower openings 173, which extend from the inner diameter of the piston 147 and correspond to the annular recess 167. It communicates with the end.

As shown, the pressure fluid supply means includes a pump 179 driven by the drive shaft 31 and an upper rod portion 129;
and an axial inner diameter 181 of the actuating rod that communicates with the pump 179 despite movement of the actuating rod 57 in the vertical axis direction.

A means is provided for communicating the opening means of the piston 147 and the inner diameter 181 of the actuating rod 57.

The upper end of the inner diameter 181 of the operating rod 57 is closed by a plug 183 (FIG. 6).

The means of communication between the opening means of the piston 147 and the inner diameter 181 of the actuating rod 57 is a radially oriented aperture 187 in the actuating rod 57, which aperture 187 defines the relative Despite the axial movement, the inner diameter 181 and the radially oriented opening 1 of the valve member 127
It communicates with 89.

Valve member 127 has an annular radially extending recess 191 in its outer surface communicating with valve member opening 189, which recess is greater than the distance between the relative abutting surfaces of upper opening 171 and lower opening 173. It also has a long axial length.

The valve member includes an axially spaced upper step 193 and a lower step 197 on the outer surface of the valve member 127 defining an at least partially annular recess 191 and an opening 171; 173 and whose axial length is preferably smaller than the axial length of these openings.

(See FIG. 3) Therefore, when the mechanical linkage 53 is in the neutral position, the step 193.1.97 is closed to the opening 171.
173 but with recess 191
By allowing fluid to flow from each opening 171, 173 to each opening 171, 173 and from each opening 171, 173 to an upper and lower axially extending passageway 211, 213, oil flows through both ends of the valve in a similar manner. The liquid flows out and flows down toward the bottom of the propellant 13 due to gravity.

In the neutral position, the hydraulic pressure acting on the piston is balanced so that no piston movement occurs.

The means for communicating and moving together the piston 147 and the actuating rod 57 consist of an extension of the pin 131 that is in fixed engagement with the piston 147.

In the illustrated embodiment of the invention, the pin 131 is attached to the actuating rod 5.
7 and diametrically opposed elongated slots 133 of the valve member 127 to enter the opening of the tapered diameter section 170 of the piston 147 at each end.

In the illustrated construction, the pin 131 remains fixedly connected to the piston 147 by an annular member 168 that is threaded into the threaded tapered diameter section 170 of the piston 147 as previously described, and is suppresses the movement of

It should be noted that the pin is connected to the piston 147 and the operating rod 5.
7 and a limited initial movement between the valve member 127 and the actuating rod 57 caused by this movement, and furthermore the step 193
．． 197 and the openings 171, 173 to control valving.

Furthermore, the pin 131 is connected to the piston 147 and the valve member 127.
and the inner diameter 181 of the operating rod and the opening 171 of the piston, which act to prevent relative rotational movement between the operating rod 57.
173.

Although various pumps and devices are used to drive the pump, the illustrated pump structure is disclosed in U.S. Pat. No. 3.62.
It is substantially the same as the pump of No. 3.583.

The propellant 13 includes a pump housing 221 forming a pump chamber 223 in which an impeller 227 is rotatably mounted on a hub 229 extending from a front bevel gear 37.
is provided.

In front of the pump housing 221 is a pump cover 231 having a horizontally extending opening 233 coaxial with the propulsion shaft 27.
are in communication with each other, and the opening 233 accommodates and guides the plunger 67 to move.

Vertical aperture 237 extends transversely to horizontal opening 233 to receive and guide movement of the lower end of actuation rod 57 diametrically across the horizontal opening.

One or more fluid inlet passageways extend from the front face of pump cover 231 through the cover to a vertical port 237.
The pump chamber 223 is provided with a kidney-shaped portion 241 that extends around the pump chamber 223 and communicates with the lower half of the pump chamber 223 .

The fluid outlet passage is located in the upper part of the housing cover 231 and in the upper half of the pump chamber 223 and in the fluid outlet 249.
It has a kidney-shaped part that communicates with the

This fluid outlet 249 communicates with the vertical port 237 at a portion remote from the intersection with the horizontal opening 233 .

The actuating rod 57 has a mouth 125 at the lower end of the inner diameter 181 that communicates with an annular recess 253 in the outer surface of the actuating rod.

The annular recess 253 prevents the fluid outlet 2 of the pump housing cover 231 from moving despite the vertical movement of the actuating rod 57.
It has a length in the axial direction that allows communication with 49 to be maintained.

Means for preventing excessive pressure from building up in the hydraulic device, i.e. pressure relief means, are provided in the pump housing 221;
A kidney shaped portion or passageway is provided which communicates with the fluid passageway 241 and has an outlet 263 which directs the flow of fluid to the sump.

A ball stop 267 is provided in the passage for pressure release,
It is forced into the annular seat 269 by a spring 271 held by a plug 273 interposed in the threaded opening.

To facilitate operation, means (Fig. 6) are provided for limiting the movement of the mechanical linkage 53 from the neutral position, so that the operator receives a feeling of neutrality, prevents wear and at the same time Clutch dog 41 is prevented from moving from neutral despite the absence of a predetermined force acting through operating rod 57, plunger 67, and slider 51.

In other words, according to the invention, the clutch dog 41 is mechanically moved from its neutral position only upon transmission of a predetermined force via the mechanical linkage.

However, such a predetermined force is typically much greater than the force required to move the valve member, so that the latch dog 41 is driven by the large hydraulic pressure created by the action of the hydraulic fluid in the piston recess 167. bevel gear 37
．． 39.

Such hydraulic pressure can ensure rapid and complete engagement of the clutch dog 41 with the bevel gears 37, 39 and prevent wear caused by incomplete and slow engagement with the bevel gears.

In the slider 51 there are provided means with an axial inner diameter 279 as well as a diametrical opening 281, the axial inner diameter 279 being open at the rear and also having a diametrical opening 281.
intersects with the front end of the inner diameter 279.

The two spaced spheres 283 have a diametric opening 28
1 and is engaged with a central sphere 287 located against the forward end of the axial inner diameter 279 .

The center sphere 287 is pushed forward by the spring 288G3 to push the spaced spheres 283 radially outwardly into an annular detent groove 289 in the opening 59 of the propulsion shaft 27.

The spring 288 abuts the off-center sphere 287 at its front end and a pin 61 connecting the slider 51 to the clutch dog 41 at its rear end.

Therefore, whenever the mover 51 moves to the neutral position,
The spring 288 works to move the sphere 283 outward in the radial direction and fit into the groove 289 to prevent it from returning, thereby exerting a predetermined force and moving the mover 5 against the propulsion shaft 27.
Move 1.

In operation, assuming that the link 121 is in the neutral position, the action of the engine is to rotate the drive shaft 31 which drives the front bevel gear 37, and the front bevel gear drives the impeller 227 of the pump to pump the fluid. The pressure fluid from the pump chamber 223 via the outlet 249 is transferred to the inner diameter 181 of the actuating rod 57.
to flow into.

Pressure fluid from the inner diameter 181 of the actuating rod 57 flows through an opening 187 in the actuating rod and through an opening 189 in the valve member 127 into the radially extending recess 191 between the steps 193,197.

Since the valve member 127 moves with the link 121, the neutral position of the valve member and the centering of the pin 131 in the slot 133 will cause fluid to flow over the steps 193, 197 and into the openings 171, 173. , further exit these and enter the respective passages 211° and 213.

Fluid flowing from passages 211, 213 falls by gravity to the bottom of the propellant, which acts as a sump communicating with the pump inlet passage.

When you want to move the link forward, move the link 121 downward, and this movement will cause the pin 131 to move against the valve member 12.
Both the link 121 and the valve member 127 are moved downward relative to the actuating rod 57 and the piston 147, which are connected to each other until they contact the upper end of the slot 133 of the valve member 127.

This movement of the valve member moves the lower step 197 into the passageway 213.
and opening 173 and annular recess 19
1 to aperture 173 is relatively unrestricted.

At the same time, upper step 193 blocks communication between recess 191 and opening 171, and relatively unrestricted communication is provided between passageway 211 and opening 171.

The action described above co-acts with the downward movement of the actuating rod 57 by pressing against the zone within the cylinder 143 below the protrusion 157, i.e. below the recess 167 of the piston, and moving the piston 147 downwardly relative to the cylinder. .

At the same time as the operating rod moves, the link 121 also continues to move, effectively moving the plunger 67 to the left, thereby engaging the front bevel gear 37 and the clutch dog 41, rotating the propulsion shaft 27 in one direction, and moving forward. Drive.

Through downward movement of actuating rod 57 to a position that causes forward engagement of clutch dog 41 to forward bevel gear 37;
The relationship of the valve member 127 to the piston 147 does not change because the operating rod 57, the valve member 127, and the piston 147 all move in one stroke.

When in forward drive, the pin is located at the upper end of the slot 133 and the pressure in the lower part of the recess 167 is sustained by the action of the pump 179 which is subjected to the pressure relief action of the ball stop 267.

When it is desired to return the clutch to the neutral position, the lock 121 is moved upward toward the neutral position.

During the first part of this movement, the valve member 127 is first moved upwardly relative to the actuating rod 57 and piston 147 until the pin 131 is positioned against the bottom of the slot 133, thus opening the recess 191 and opening. 173 so that flow from opening 173 to passageway 213 is relatively unrestricted.

At the same time, the communication between the passage 211 and the opening 171 is blocked, and the communication between the recess 191 and the opening 171 is made relatively unrestricted.

The aforementioned action also causes an upward movement of the actuating rod 57 by pressing against a zone within the cylinder 143 above the protrusion 157, i.e. above the recess 167 of the piston, and moving the piston 147 upwardly relative to the cylinder. .

As the actuation rod moves, the link continues to move and effectively moves the plunger 67 to the right, thereby disengaging the clutch dog 41 from the forward bevel gear 37.

At the end of the upward movement of the link 121 by coming to the neutral position, the fluid pressure is maintained in the upper part of the recess until the opening 171.173 simultaneously communicates with the recess 191 and the passage 211.213 of the valve member 127. The entering fluid pressure continues to move piston 147 upwardly relative to valve member 127.

When such communication occurs, the forces acting on the piston are balanced, and the actuating rod 57 is in the neutral position, so that the clutch
The dog 41 is brought to the neutral position.

The pin 131 is also centered in the slot 133.

If you want to move from the front to the back, link 121
, of course, is moved upwardly beyond the neutral position and placed in the retracted position, while the hydraulic action continues to move the piston 147 until the clutch dog 41 fully abuts the rear bevel gear 39.
Continue the upward movement.

In this position, the link 121 is in the retracted position,
Pin 131 is located against the lower end of slot 133 of valve member 127.

Furthermore, during the reverse drive, the pressure in the upper part of the recess 167 is maintained throughout the engagement of the clutch dog 41 with respect to the bevel gear 39 by the action of the pump 179 which is subjected to the pressure relief action of the ball stop 267.

In this case, pump 179 is operative to provide pressurized fluid whenever the engine is running.

By moving the link 121 from the retreat position to the neutral position,
First, the valve member 127 and the link 121 move downwards together, so that the shoulder 193.197 moves relative to the opening 171.173 so that the pressure fluid enters the lower part of the recess 169 of the piston and Pressure fluid is discharged from the upper part in the manner described above.

This action causes a downward movement of the piston 147 relative to the cylinder 143 and a subsequent downward movement of the operating rod 57, and this movement of the operating rod is effective in moving the clutch dog 41 from right to left.

Movement of the link 121 may end in the neutral position, or the hydraulic system may be forced beyond the neutral position when the link 121 moves from reverse to forward.

If for some reason the hydraulic system becomes defective, the reversing gear is still mechanically activated via the actuation of the mechanical linkage.

At least some features of the invention may be achieved when the displacement mechanism described herein is used with marine propulsion systems other than those illustrated.

[Brief explanation of the drawing]

FIG. 1 is a side view of an outboard motor that takes advantage of various features of the present invention, and FIG. 2 is an enlarged perspective view of a component implemented in the outboard motor shown in FIG. 1, that is, an operating rod 57. FIG. 3 is an enlarged view of various components implemented in the outboard motor shown in FIG. 1, with some of the components shown in section. Figure 4 is a cross-sectional view taken along line 4--4 of Figure 3; The figure is a cross-sectional view taken along line 5-5 in Figure 6, and Figure 6 is an enlarged side view of the reversing transmission installed in the outboard motor in Figure 1, partially in cross section and partially cut away. what was shown,
FIG. 7 is a perspective view of another component provided in the outboard motor of FIG. 1, that is, the plunger 67. 11... Outboard motor, 13... Propulsion body, 2
7... Propulsion shaft, 29... Propeller, 3
1... Drive shaft, 33... Reverse transmission, 41... Clutch dog, 51...
Mover, 53... Mechanical link mechanism, 57...
...Operating rod, 67...Plunger, 127.
...Valve member.

Claims (1)

[Scope of Claims] 1. A propulsion body, means attached to the hull and connected to the propulsion body so that the propulsion body can rotate horizontally and swing vertically with respect to the means, A propulsion shaft rotatably attached to the propulsion body, a propeller supported by the propulsion shaft, a drive shaft rotatably attached to the propulsion body, this drive shaft is connected to the propulsion shaft, and a neutral position and a drive position are set. move,
In addition, there is a reversing transmission device that has a clutch dog attached to the propulsion shaft so that it rotates with the propulsion shaft and moves in the axial direction relative to the propulsion shaft, and a mechanism that extends inside the propulsion body and operates the reversing transmission device according to the movement. a member operatively connected to the reversing transmission, and supported for rotation with the propulsion shaft and for axial movement relative to the propulsion shaft, and coupled for movement therewith to the clutch dog; an actuating rod supported by a propeller and adapted to move in a transverse direction of said member; a pair of cam surfaces projecting from said actuating rod and inclined with respect to the direction of movement of said actuating rod; a pair of driven cam surfaces that are provided so as to be reciprocally movable along the rotational axis direction of the member and that engage with the cam surface;
a follower that moves in one direction and moves in the opposite direction in response to the movement of the rod in the other direction; and a follower that allows rotation of the member relative to the follower, but that the follower and the member move together in the axial direction. A marine propulsion device comprising a device for coupling a follower and the member so as to. 2. A propulsion body, means attached to the hull and connected to the propulsion body so that the propulsion body can rotate horizontally or swing vertically with respect to the means, and An attached propulsion shaft, a propeller supported by the propulsion shaft, a drive shaft rotatably attached to the propulsion body, and a reversing transmission that connects this drive shaft to the propulsion shaft and can move between a neutral position and a drive position. and a mechanism that extends inside the propellant and is supported by the propellant, and is connected to the reversing transmission so as to operate the reversing transmission according to its movement, and is also movable within the propellant and operatively connected to the reversing transmission. a mechanical linkage including a rod and a member mounted within the propulsion body in telescopic relation outwardly to the rod for translation parallel to the rod; a device for connecting the member and the rod to provide a common movement of the rod and the member in response to the movement of the member; The hydraulic device is fixed to the propelling body in a relationship that surrounds the rod and the member, and is disposed between two separated end portions having cylindrical wall surfaces. a cylinder having a boss having a cylindrical wall extending radially inwardly; and a piston engaged in telescopic relationship outside the member and inside the cylinder, the piston being engaged at opposite ends of the cylinder. separated ends that are engaged in a telescopic relationship with the cylindrical wall surface, and an outwardly directed cylinder that has a length in the cylinder axial direction that is greater than the length of the boss and that is engaged in a telescopic relationship with the cylindrical wall surface of the boss. a recess having a surface and a pair of spaced openings disposed adjacent axially opposite ends of the piston recess for receiving pressurized fluid to effect displacement of the piston relative to the cylinder; A marine propulsion machine that includes a device that connects the rod and the rod so that they move together. 3. A propulsion body, means attached to the hull and connected to the propulsion body so that the propulsion body can rotate horizontally or swing vertically with respect to the means, and An attached propulsion shaft, a propeller supported by the propulsion shaft, a drive shaft rotatably attached to the propelling body, and a reverse transmission that connects this drive shaft to the propulsion shaft and can move between a neutral position and a drive position. a mechanical linkage extending within the propellant and supported by the propellant and coupled to the reversing transmission to actuate the reversing transmission in response to the movement of the mechanism, the mechanical linkage having a predetermined a releasable device for preventing movement of a mechanical linkage from a neutral position of a reversing transmission when no greater force is applied; a piece movable axially within the aperture of the shaft; a pocket provided in the wall of the aperture of the propulsion shaft; and a first piece disposed in the piece so as to be aligned with the pocket when the reversing gear is in a neutral position. a device comprising: a hole; a ball disposed within the first hole of the piece; and means for elastically pressing the ball radially outwardly from the first hole of the piece to partially push the ball into the pocket. , whereby the ball is partially located in the pocket and partially in the first hole when the reversing transmission is in the neutral position, and the mechanical link is further disposed to assist the movement of the mechanical linkage for actuating the reversing transmission. A marine propulsion machine that includes a hydraulic system that is actuated in response to the initial movement of the mechanism. 4. A propulsion body having a gear box portion at the lower end, and means attached to the hull and connected to the propulsion body so that the propulsion body can rotate horizontally and swing vertically with respect to the means. , a propulsion shaft rotatably attached to the gearbox section, a propeller supported by the propulsion shaft, a drive shaft rotatably attached to the propulsion body and extending into the gearbox section, and a drive shaft arranged inside the gearbox section. and a hydraulic pump driven by the drive shaft; a reversing transmission disposed within the gear box unit that connects the drive shaft to the propulsion shaft and is movable in the axial direction of the propulsion shaft between a neutral position and a drive position; a mechanism extending inside the body and movably supported by the propelling body, the mechanism including a mechanical link mechanism connected to the reversing transmission to mechanically move the reversing transmission in response to the movement of the mechanism, the mechanical link mechanism The gearbox has a rod, several of which are arranged to move vertically along its own longitudinal direction, and which extend into the gearbox and move the reversing gear in response to its longitudinal movement. a lower end operatively connected to the device, some of which include holes extending longitudinally therein and communicating with a hydraulic pump regardless of longitudinal movement of the rod; Hydraulic pressure connected to a mechanical linkage and actuated in response to the initial movement of the linkage to assist in the longitudinal movement of the rod in order to move the reversing gear, in communication with the several holes regardless of the movement; A marine propulsion device comprising: