JPH0351633B2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to a tilt device for an outboard motor.

[Background Art] An outboard motor includes a clamp bracket fixed to the stern plate of the hull, a swivel bracket tiltably supported by the clamp bracket and supporting the outboard motor body, and a bracket between the clamp bracket and the swivel bracket. a tilt cylinder device installed in the
A tilt device is used that includes an electric pump that allows the tilt cylinder device to expand and contract, and a tilt switch that allows the electric pump to be operated.

However, the tilt switch in the conventional tilt device described above is fixedly placed around the outboard motor body, and there is a possibility of erroneous operation of driving the electric pump even when tilting the outboard motor body is not required. There is sex.

[Object of the Invention] The present invention enables driving operation of an electric pump only when tilting operation of the outboard motor body is required.
The purpose of this invention is to reliably eliminate the possibility of erroneous operation of the tilt device when tilting the outboard motor body is not required.

[Structure of the Invention] In order to achieve the above object, the present invention includes: a clamp bracket fixed to a stern plate of a hull; a swivel bracket tiltably supported by the clamp bracket and supporting an outboard motor body; It consists of a lower cowling part that can be fixed to the outboard motor body and an upper cowling part that can be attached to and detached from the lower cowling part, and consists of a cowling that covers the engine part of the outboard motor body, a clamp bracket, and a swivel bracket. It has a tilt cylinder device interposed therebetween, an electric pump that pressure-feeds working fluid to the tilt cylinder device so that the tilt cylinder device can expand and contract, and a tilt switch that can drive and operate the electric pump. In a tilt device for an outboard motor, a connection terminal for a lead wire connected to the drive section of an electric pump is fixed to the lower part of the cowling, and a tilt switch can be attached to and detached from the connection terminal. be.

[Specific Description of the Invention] Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing an outboard motor 10 to which a first embodiment of the present invention is applied, FIG. 2 is a circuit diagram showing a hydraulic circuit of a tilt device according to the same embodiment, and FIG. 3 is a side view showing an outboard motor 10 to which a first embodiment of the present invention is applied. FIG. 4 is a circuit diagram showing an electric circuit of the tilt device according to the example, and FIG. 4 is a sectional view showing the main part of FIG. 1.

A clamp bracket 12 is fixed to the stern plate 11A of the hull 11, and a swivel bracket 14 is pivotally attached to the clamp bracket 12 via a tilt shaft 13 so as to be tiltable around a substantially horizontal axis. A propulsion unit 15 as an outboard motor main body is attached to the swivel bracket 14 via a steering shaft (not shown).
is pivotably mounted around the steering shaft. The engine unit 15 is located above the propulsion unit 15.
A is provided at the bottom of the propulsion unit 15, and a propeller 15B is provided at the bottom of the propulsion unit 15. That is, the outboard motor 10 tilts the propulsion unit 15 by the tilt operation described below, so that its cruising attitude or storage attitude can be adjusted.

Note that the engine unit 1 of the propulsion unit 15
5A is covered with a cowling 16 to protect it from fogging caused by splashing rainwater and seawater. The cowling 16 consists of a lower cowling 16A fixed to the propulsion unit 15, and an upper cowling 16B detachably attached to the lower cowling 16A.

Tilt cylinder 1 is attached to clamp bracket 12.
The base end of the tilt cylinder 18 is connected to the swivel bracket 14 by a pin, and the tip end of the piston rod 19 of the tilt cylinder 18 is connected to the swivel bracket 14 by a pin. The interior of the tilt cylinder 18 is divided into an upper chamber 21 on the side where the piston rod 19 is accommodated and a lower chamber 22 on the side where the piston rod 19 is not accommodated by a piston 20 fixed to the end of the piston rod 19.

Further, the base end portions of a pair of left and right trim cylinders 23 arranged on both sides of the tilt cylinder 18 are fixed to the clamp bracket 12.
The tip end of the piston rod 24 of the trim cylinder 23 is capable of contacting the swivel bracket 14 in a state where they can be separated from each other. The interior of the trim cylinder 23 is divided by a piston 25 fixed to the end of the piston rod 24 into an upper chamber 26 on the side where the piston rod 24 is accommodated and a lower chamber 27 on the side where the piston rod 24 is not accommodated.

Next, the hydraulic circuits for the tilt cylinder 18 and trim cylinder 23 will be explained. 2
8 is a reservoir, which allows hydraulic oil to be stored. 29 is an electric motor which will be described in detail later, and 30 is an electric pump. The pump 30 can be selectively rotated forward or reverse by the motor 29. 3
Reference numeral 1 denotes an opening/closing device, which includes a shuttle piston 32, a first check valve 33, and a second check valve 34.
A first shuttle chamber 35 is defined on the side, a second shuttle chamber 36 is defined on the second check valve 34 side of the shuttle piston 32, and a first check chamber 37 is defined around the valve body of the first check valve 33. form,
A second check chamber 38 is defined around the valve body of the second check valve 34. That is, the first check valve 33 closes the pipe line 39 when the pump 30 rotates normally.
The second check valve 34 can be opened by the oil pressure supplied through the conduit 40 when the pump 30 is reversed. ing. In addition, the shuttle piston 32 is operable to open the second check valve 34 by the oil sending pressure caused by the forward rotation of the pump 30, and to open the first check valve 33 by the oil feeding pressure caused by the reverse rotation of the pump 30. There is.

Also, the first check chamber 37 of the opening/closing device 31, the lower chamber 22 of the tilt cylinder 18, and the trim cylinder 2
The lower chamber 27 of No. 3 is communicated with by a conduit 41. Also, the second check chamber 38 of the opening/closing device 31
and the upper chamber 21 of the tilt cylinder 18 are the pipe line 42
communicated by. Further, the reservoir 28 and the upper chamber 26 of the trim cylinder 23 are communicated through a conduit 43.

Furthermore, the intermediate portion of the conduit 41 and the reservoir 28 are
It is connected via a relief valve 44 for the lower chamber.
That is, when the propulsion unit 15 is tilted up, the piston rod 1 of each cylinder 18, 23
9 and 24 reach their maximum extended positions, the lower chamber relief valve 44 is opened and the pump 30 is opened.
It is possible to return the oil discharged from the reservoir 28 to the reservoir 28.

Furthermore, the intermediate portion of the conduit 40 and the reservoir 28 are
It is connected via an upper chamber relief valve 45.
That is, when the propulsion unit 15 is tilted down, the piston rod 1 of each cylinder 18, 23
9 and 24 reach their respective maximum contraction positions, the upper chamber relief valve 45 opens and the pump 30
It is possible to return the oil discharged from the reservoir 28 to the reservoir 28. Furthermore, when the propulsion unit 15 is tilted down, the volume of each cylinder 18, 23 is reduced by the volume of each cylinder 18, 23 of each piston rod 19, 24.
3 is reduced by the intrusion volume into the reservoir 28, resulting in a surplus in the amount of circulating oil. It is possible.

That is, the tilt operation of the propulsion unit 15 by each of the cylinders 18 and 23 is as follows.

When the electric motor 29 is operated upward and the electric pump 30 is rotated forward, the oil discharged from the pump 30 passes through the pipe 39, the first shuttle chamber 35 and first check chamber 37 of the opening/closing device 31, and the pipe 41. , are sent to the lower chamber 22 of the tilt cylinder 18 and the lower chamber 27 of the trim cylinder 23, and extend the piston rods 19, 24 of each cylinder 18, 23, making it possible to tilt up the propulsion unit 15. The hydraulic oil in the upper chambers 21, 26 of each cylinder 18, 23 is supplied to the pipe 4.
2. Returns to the pump 30 via the second check chamber 38 and second shuttle chamber 36 of the opening/closing device 31 and the conduit 40.

Note that after the piston rod 24 of the trim cylinder 23 reaches its maximum extension position, only the piston rod 19 of the tilt cylinder 18 extends at a faster speed, making it possible to tilt the propulsion unit 15 up to a larger tilt angle position.

On the other hand, when the electric motor 29 is operated in the down direction and the electric pump 30 is reversed, the oil discharged from the pump 30 is transferred to the pipe 40 and the second shuttle chamber 36 of the opening/closing device 31.
and is sent to the upper chambers 21 and 26 of each cylinder 18 and 23 via the second check chamber 38 and the conduit 42,
Piston rods 19, 2 of each cylinder 18, 23
4 to allow the propulsion unit 15 to tilt down.

Electric motor 29 that drives the electric pump 30
An explanation of the operating electric circuit is as follows.

As shown in FIG. 3, the electric motor 29 has an up-side coil 51 connected in series to an armature 52, which is energized when the propulsion unit 15 is tilted up, and a down-side coil 5, which is energized when the propulsion unit 15 is tilted down.
3 are connected in series to the armature 52 to form a series winding type. A contact 56 that is closed when the up side relay 55 is energized is interposed in the intermediate part of the connection circuit between the power source 54 and the up side coil 51.
A contact 58 that is closed when the down side relay 57 is energized is interposed in the intermediate portion of the connection circuit between the down side coil 53 and the down side coil 53 .

Further, a tilt switch 59 is interposed in the intermediate portion of the connection circuit between the power source 54 and each relay 55, 57. Switch body 59 of tilt switch 59
A can be rotated around a power source terminal 60 connected to the power source 54, and has the habit of returning to the neutral position shown in FIG. 3 by a spring mechanism (not shown). The switch body 59A of the tilt switch 59 is rotated toward the upper side by applying manual operation force, contacts the upper side terminal 61 and closes, energizes the upper side relay 55, and connects the electric motor. 29 is driven upward, the electric pump 30 rotates normally, and the propulsion unit 15 can be tilted up. Also, tilt switch 59
The switch body 59A is rotated to the down side, contacts the down side terminal 62 and closes, energizes the down side relay 57, drives the electric motor 29 to the down side, and reverses the electric pump 30. , the propulsion unit 15 can be tilted down.

Therefore, in this first embodiment, a connecting member 66 is fixed to the lower cowling 16A, and a connecting member 65 extending from the operating section 63 of the tilt switch 59 via a lead wire 64 is detachably attached. ing.

The connection portion 65 of the tilt switch 59 has connection terminals 65A, 65 connected to the power supply side terminal 60, up side terminal 61, and down side terminal 62, respectively, which are arranged on the operation portion 63 via a lead wire 64.
B, 65C, and the connecting member 66 is connected to the lead wire 6.
7 to the power supply 54, the up-side relay 55, and the down-side relay 57, and
Each connection terminal 65A, 65B, 6 of the connection part 65
Connecting terminals 66A, 66B, which allow 5C to be attached and detached freely.
Equipped with 66C.

Here, the lead wire 64 is flexible,
It extends freely within a predetermined extension length.

Note that the opening of the connection member 66 into which the connection part 65 of the tilt switch 59 can be inserted is closed when the connection part 65 is not inserted, and is closed tightly around the connection part 65 when the connection part 65 is inserted. and each connection terminal 66A~
A cover 68 is provided to prevent water droplets from entering 66C.

Next, the operation of the first embodiment will be explained. The tilt switch 59 connects each connection terminal 65A to 65C of the connection portion 65 to the lower cowling 16A.
Each connection terminal 66 of the connection member 66 fixed to
It can be attached and detached from A to 66C. Therefore, each connection terminal 65A to 6 of the tilt switch 59 is connected only when tilting operation of the propulsion unit 15 is required.
5C to each of the connection terminals 66A to 66C of the connection member 66 fixed to the lower cowling 16A, the electric pump 30 can be driven and the propulsion unit 15 does not need to be tilted. This makes it possible to eliminate the possibility of erroneous operation of the tilt device.

Note that since the tilt switch 59 is connected to the end of the flexible lead wire 64, a certain degree of freedom in the operating posture of the operator is ensured within the extended length of the lead wire 64. However, it is possible to operate the tilt switch 59.

FIG. 5 is a sectional view showing a main part of a second embodiment of the present invention.

This second embodiment differs from the first embodiment in that a tilt switch 70 is used in place of the tilt switch 59. This tilt switch 70 has an operating section 71 and a connecting section 72 integrated without using a lead wire, and each connecting terminal 72A, 72B, 72C of the connecting section 72 is arranged on the operating section 71. It is connected to each of the power supply side terminal, up side terminal, and down side terminal, and is detachable from each of the connection terminals 66A, 66B, and 66C of the connection member 66 similar to that in the first embodiment.

Therefore, according to the second embodiment, only when it is necessary to tilt the outboard motor body, the connection member 66, which is formed by fixing each of the connection terminals 72A to 72C of the tilt switch 70 to the lower cowling 16A, is used. By attaching it to each of the connection terminals 66A to 66C, it is possible to drive the electric pump, and it is possible to eliminate the possibility of erroneous operation of the tilt device when tilting the outboard motor body is not required. Become.

FIG. 6 is a sectional view showing a main part of a third embodiment of the present invention.

The third embodiment differs from the first embodiment in that a tilt switch 80 is used in place of the tilt switch 59. This tilt switch 80 is, for example, a key that can be used in common with the drive key of the engine unit 15A, and a connecting member 8 that is substantially similar to the connecting member 66 in the first embodiment.
It is said that it can be attached to and detached from each connection terminal of 1.

Therefore, according to the third embodiment, the tilt switch 80 is attached to each connection terminal of the connection member 81 fixed to the lower cowling 16A only when tilting the outboard motor body is required. By doing so, it becomes possible to drive the electric pump and eliminate the possibility of erroneous operation of the tilt device when tilting the outboard motor body is not required.

[Effects of the Invention] As described above, the present invention provides a clamp bracket fixed to a stern plate of a hull, a swivel bracket tiltably supported by the clamp bracket and supporting an outboard motor body, and an outboard motor. The tilt cylinder is comprised of a lower cowling part that can be fixed to the main body and an upper cowling part that is removable, and that covers the engine part of the outboard motor main body, and a tilt cylinder that is interposed between the clamp bracket and the swivel bracket. In a tilt device for an outboard motor, the tilt device includes a device, an electric pump that pressure-feeds working fluid to the tilt cylinder device and makes the tilt cylinder device expandable and retractable, and a tilt switch that allows the electric pump to be driven and operated, A connection terminal for a lead wire connected to a drive section of an electric pump is fixed to the lower cowling portion of the cowling, and a tilt switch is detachably attached to the connection terminal. Therefore, only when tilting the outboard motor body is required, the electric pump can be operated by attaching the tilt switch to the connection terminal fixed to the lower part of the cowling. It is possible to eliminate the possibility of erroneous operation of the tilt device when tilting the outboard motor body is not required.

[Brief explanation of drawings]

FIG. 1 is a side view showing an outboard motor to which a first embodiment of the present invention is applied, FIG. 2 is a circuit diagram showing a hydraulic circuit of a tilt device according to the same embodiment, and FIG. 3 is a circuit diagram showing the hydraulic circuit of a tilt device according to the same embodiment. A circuit diagram showing an electric circuit of a tilt device according to
FIG. 4 is a cross-sectional view showing the main parts of FIG. 1, FIG. 5 is a cross-sectional view showing the main parts of the second embodiment of the present invention, and FIG. FIG. 3 is a sectional view showing a main part. 10... Outboard motor, 11... Hull, 11A... Stern plate, 12... Clamp bracket, 14... Swivel bracket, 15... Propulsion unit, 15
A... Engine unit, 16... Cowling,
16A... lower cowling, 18... tilt cylinder, 29... electric motor, 30... electric pump,
59,70,80...Tilt switch, 66,8
1... Connection member, 66A, 66B, 66C... Connection terminal.

Claims (1)

[Claims] 1. A clamp bracket that is fixed to the stern plate of the hull, a swivel bracket that is tiltably supported by the clamp bracket and supports the outboard motor body, and a lower cowling portion that can be fixed to the outboard motor body. It consists of an upper cowling part that is removably attached to the cowling part, and a cowling that covers the engine part of the outboard motor body, a tilt cylinder device that is interposed between the clamp bracket and the swivel bracket, and a tilt cylinder device that operates on the tilt cylinder device. In a tilt device for an outboard motor, the electric pump is provided in a lower cowling portion of the cowling, and includes an electric pump that pumps fluid and makes the tilt cylinder device extendable and retractable, and a tilt switch that allows the electric pump to be driven and operated. 1. A tilt device for an outboard motor, characterized in that a connection terminal of a lead wire connected to a drive portion of the outboard motor is fixed, and a tilt switch is detachably attached to the connection terminal.