JP2000043794A - Manual hydraulic steering apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the manual hydraulic steering apparatus of a tilt mechanism integrated type, which is easily attached to a hull panel and compact, and needs no extra parts such as a hose for oil supply or the like. SOLUTION: A pump casing 3 of a helm pump unit 6 is directly attached and fixed to a dashboard 2. An oil supply port for supplying oil used for functioning the pump mechanism of the helm pump unit 6 is positioned in an operating room side of the pump casing 3 (rear casing). Between the pump casing 3 and the dashboard 2, a spacer member is provided for adjusting the axial direction of a steering shaft 7 with respect to the attaching surface of the dashboard 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual hydraulic steering system used mainly for small boats.

[0002]

2. Description of the Related Art Conventionally, in a small boat such as a motorboat, a tilt mechanism is provided for a steering device mounted on a dashboard (hull panel) facing a driver's cab. Ones that allow the position to be adjusted are known.

In a state where a steering device having such a tilt mechanism is mounted on a dashboard, for example, as shown in FIGS.
A helm pump unit 102, which is a hydraulic pump unit that generates a steering force, is disposed at a more front part, and a tilt mechanism 103 is disposed at a rear part (operator cab side). And
In order to attach them to the dashboard 101, a mounting plate 104 having a predetermined shape is previously attached to the dashboard 101 by using a plurality of attachments 105, and a center hole 104 of the mounting plate 104 is provided.
a of the drive shaft 10 of the helm pump unit 102
2a is extended rearward, and a steering wheel 106 is provided at a tip end thereof via a tilt mechanism 103 in a cab.
Is connected to the steering shaft 107. The tilt mechanism 103 is covered by a bezel 108 and a bellows 109. 110 is a latch boot. Reference numeral 102b denotes an oil supply port for supplying oil for operating the pump mechanism.

[0004]

However, in such a structure, since the helm pump unit 102 is connected to the tilt mechanism 103 by using the mounting plate 104, the work for attaching the mounting plate 104 to the dashboard 101 is performed. And the helm pump unit 1 with respect to the mounting plate 104.
02 and the mounting plate 10
4, a tilt mechanism 103 is attached to the tilt mechanism 1
In this case, three mounting operations including a process of connecting the 03 to the helm pump unit 102 are required, and the mounting operation is troublesome. Further, since the oil supply port 102b to the helm pump unit 102 is located on the front side of the dashboard 101, extra parts such as a hose for guiding the oil supply port 102b to a position where the oil can be supplied are required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended to provide a manual hydraulic steering system integrated with a tilt mechanism which is easy to install, is compact, and does not require extra parts such as a hose for refueling. The purpose is to provide.

[0006]

According to a first aspect of the present invention, there is provided a hydraulic pump having a pump mechanism for generating a steering force by operating a drive shaft in a pump casing, and a hydraulic pump connected to the drive shaft of the hydraulic pump. And a tilt means interposed between the drive shaft and the steering shaft to change a tilt angle between the drive shaft and the steering shaft. The hull panel has an opening formed in the hull panel. A manual hydraulic steering device mounted through the pump casing, wherein the pump casing is directly mounted and fixed to the hull panel, and includes an oil supply port for supplying oil for operating the pump mechanism, wherein the oil supply port is The pump casing is located on the cab side in a state where the pump casing is fixedly attached to the hull panel.

According to the first aspect of the present invention, since the pump casing is directly attached and fixed to the hull panel, three operations conventionally required (an operation for attaching the mounting plate to the hull panel, an operation for attaching the helm pump to the mounting plate). The work of attaching the unit and the work of attaching the tilt mechanism to the mounting plate and connecting the tilt mechanism to the helm pump unit) can be performed by one work, which facilitates the installation and improves the workability of the installation. In addition, since no mounting plate is required, the length from the hydraulic pump means to the steering shaft is reduced by the space required for attachment to the mounting plate, resulting in compactness. Further, when the fuel supply port is fixed to the hull panel, the fuel supply port is located on the driver's cab side, and the fuel supply port can be directly refueled. No longer needed.

According to a second aspect of the present invention, in the manual hydraulic steering system according to the first aspect, the hydraulic pump means is disposed between a pump casing and a hull panel to adjust a direction of an axis of the drive shaft with respect to the hull panel. It has a spacer member that can be used.

According to the second aspect of the present invention, the direction of the axis of the drive shaft with respect to the hull panel can be adjusted by the spacer member. For example, by using or not using the spacer member, the axial direction of the drive shaft can be adjusted horizontally. Or in a direction perpendicular to the hull panel.

According to a third aspect of the present invention, in the manual hydraulic steering apparatus according to the first or second aspect, the tilt means is swingably provided on the pump casing via a swing shaft, and the steering shaft is connected to the axis thereof. An oscillating block rotatably inserted around the oscillating block, and the steering rig shaft provided on the oscillating block and having the drive shaft rotatable about the same axis as the oscillating axis and an axis in a direction orthogonal thereto. Joint means for coupling, a plurality of engagement recesses formed in the swing block and provided regularly in the swing direction, and rotatably provided in the pump casing and removably engaged with the engagement recess. And a lever member having a mating engagement pin.

According to the third aspect of the present invention, the engagement between the engagement recess of the swing block and the engagement pin of the lever member is released, so that the swing block is swung with respect to the pump casing and the tilt angle is increased. On the other hand, by engaging the engagement pin of the lever member with the engagement recess, the swing block is locked to the pump casing, and the tilt angle is not changed.

According to a fourth aspect of the present invention, in the manual hydraulic steering device according to the third aspect, a bellows-shaped bellows for covering the tilt means is further provided, and one end of the bellows is connected to the pump casing and the other end is connected to the bellows. Each is connected to a swing block.

According to the fourth aspect of the present invention, the tilt means is covered with the bellows, and the tilt function is secured without impairing the appearance.

[0014]

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

FIG. 1 is a front view showing the appearance of a manual hydraulic steering system according to the present invention, FIG. 2 is a cross-sectional view showing a schematic configuration of the system, and FIG. FIG.

In FIG. 1, a manual hydraulic steering device 1 is mounted so as to penetrate a dashboard 2 (hull panel) and generates a steering force by operating a drive shaft 4 in a pump casing 3. A helm pump unit 6 (hydraulic pump means) having a built-in mechanism 5, a steering shaft 7 connected to the drive shaft 4 of the helm pump unit 6 for operating the drive shaft 4, and between the drive shaft 4 and the steering shaft 7 And tilt means 8 interposed between the drive shaft 4 and the steering shaft 7 to change a tilt angle between the drive shaft 4 and the steering shaft 7.

The pump casing 3 of the helm pump unit 6 includes a front casing 11 and a rear casing 12 connected to each other. The pump casing 3 includes a pump mechanism 5 therein, and a drive shaft 4 for driving the pump mechanism 5. Project rearward from the rear casing 12.

Further, the front casing 11 has a flange portion 11a at a rear portion, and the flange portion 11a
An annular recess 12a formed on the front side of the rear casing 12.
The front casing 1
An annular seal member (not shown) is provided between the inner peripheral surface of the first casing 1 and the outer peripheral surface of the rear casing 12. The pump casing 3 is provided with a wedge-shaped spacer member 1.
4, the four mounting bolts 15, 15, 15, 1 are inserted into the opening 2 a of the dashboard 2 from the rear side through the front side 4.
By applying 5, a mounting plate is fixed to the dashboard 2 so that the center line of the helm pump unit 6 is substantially horizontal without using a mounting plate as in the related art. That is, the mounting bolts 15, 15, 15,
15 penetrates the dashboard 2, and the front casing 11 and the rear casing 12 of the pump casing 3
Screwed into. By omitting the spacer member 14, the helm pump unit 6 can be mounted so that the center line of the helm pump unit 6 is orthogonal to the mounting surface 2b of the dashboard 2.

The front casing 11 is provided with an oil supply port 11b to which a hose for supplying oil for operating a steering mechanism (not shown) is connected. On the other hand, in the rear casing 12, an oil supply port 12b for supplying oil for causing the pump mechanism 5 to function is formed, and when the oil supply port 12b is attached and fixed to the dashboard 2 with the manual hydraulic steering device 1, Are located on the driver's cab side. Note that a cap 16 for closing the fuel supply port 12 is detachably fitted to the fuel supply port 12b.

A steering shaft 7 is connected to the drive shaft 4 of the helm pump unit 6 via tilt means 8 so as to be tiltable according to a driver's request. The operation of a steering wheel (not shown) connected and fixed to the steering shaft 7 causes the helm pump unit 6 to generate a steering force.

The tilting means 8 integrally provided on one side of the helm pump unit 6 is covered by a bellows 17 having a bellows shape which can be extended and contracted, and is entirely concealed.
The appearance is not impaired. That is, the bellows 17 has a circular horizontal portion 17a through which the swing block 22 to be described later is attached and fixed and the steering shaft 7 penetrates, and one end portion is continuously provided at a peripheral portion of the horizontal portion 17a. A bellows-shaped cylindrical portion 17b;
b, and a locked portion 17c connected to the other end of the rear casing 12.
The tilt means 8 is housed inside the bellows 17.

The tilting means 8 includes a pump casing 3
Swinging block 2 which is provided to be swingable via swinging shafts 21 and 21 and into which the steering shaft 7 is rotatably fitted.
And a joint means 23 disposed in the swing block 22 for connecting the steering shaft 7 to the drive shaft 4 so as to be rotatable about the same axis as the swing shaft 21 and an axis in a direction orthogonal thereto. A plurality of engagement recesses 22a formed in the swing block 22 and provided regularly in the swing direction, and a plurality of engagement recesses 22a provided rotatably in the pump casing 3 and provided in the engagement recesses 22a. And a lever member 25 having an engaging pin 24 that is removably engaged.

The joint means 23 includes the drive shaft 4
A shaft member 32 having an axis orthogonal to the drive shaft 4 and the connection shaft 31 rotatably connected to a distal end portion of the shaft member via a connection shaft 31 having an axis orthogonal to the drive shaft 4; An outer frame member 3 rotatably connected via rotating shafts 33 having an axis in the axial direction of the shaft member 32.
The base end of the steering shaft 7 is connected to the outer frame member 34. Therefore, the steering shaft 7
The drive shaft 4 is rotatably connected to the drive shaft 4 through joint means 23 in the up-down direction and the left-right direction, and the drive shaft 4 and the axis can be made to coincide with each other.
As shown in FIG. 3, the swing shaft 21 and the connection shaft 31 are coaxially arranged, and the steering shaft 7 rotates (swings) together with the swing of the swing block 22. It has become.

The joint means 23 is housed in the recess 22a of the swing block 22 fixed to the horizontal portion 17a of the bellows 17, and the steering shaft 7
Has a through-hole extending through the through hole 22b of the swing block 22 to the outside. The recess 22a of the swing block 22
Has a circular cross section and is configured such that rotation of the steering shaft 7 can rotate the joint means 23 (outer frame member 34).

As shown in detail in FIG. 2 and FIG. 3, in the lower portion of the swing block 22, there are formed horizontally long engaging recesses 22c at regular intervals in the circumferential direction. (In this example, five at 12 ° intervals). On the other hand, a substantially L-shaped lever member 25 is supported by the rear casing 12 so as to be rotatable about a rotary shaft 26 corresponding to the engagement recesses 22c. The lever member 25 is provided at one end thereof with an engagement pin 24 that is removably engaged with the engagement recess 22c, and the engagement pin 24 is engaged with the engagement recess 22c by a spring member (not shown). Always biased in the direction.

By gripping the other end of the lever member 25, the lever member 25 is rotated against the urging force of the spring member, and the engagement pin 24 and the engagement recess 22c can be disengaged. It has become. The inclination angle (tilt angle) of the steering shaft 7 is adjusted stepwise to an arbitrary angle by the engagement relationship between the engagement recess 22c of the helm pump unit 6 and the engagement pin 24 of the lever member 25. hand,
It can be locked.

Therefore, according to the above construction, the pump casing 3 is mounted and fixed to the dashboard 2 only by directly mounting and fixing the pump casing 3 to the dashboard 2 with the four mounting bolts 15, which is conventionally required. Three tasks (the task of attaching the mounting plate to the hull panel, the task of attaching the helm pump unit to the mounting plate, and the task of attaching the tilt mechanism to the mounting plate and connecting the tilt mechanism to the helm pump unit) And installation is easy, and the mounting workability is excellent. Further, since no mounting plate is required, the number of parts can be reduced and the cost can be reduced. In addition, the length from the helm pump unit 6 to the steering shaft 7 can be reduced by the space required for mounting the mounting plate. This is also advantageous in achieving compactness. Further, when the fuel supply port 12b is mounted and fixed to the dashboard 2, the fuel supply port 12b is located on the driver's cab side, and the fuel supply port 12b can be directly refueled. This eliminates the need for special parts, and in this regard, the number of parts can be reduced.

Further, since the spacer member 14 for adjusting the direction of the axis of the steering shaft 7 with respect to the mounting surface 2b of the dashboard 2 can be arranged between the pump casing 3 and the dashboard 2. ,
By using or not using the spacer member 14, the axial direction of the drive shaft 4 can be made horizontal or the direction perpendicular to the dashboard 2 can be made.

[0029]

The present invention is embodied in the form described above, and has the following effects.

According to the first aspect of the present invention, the pump casing is directly mounted and fixed to the hull panel, so that the mounting operation is simplified and the mounting workability is improved. This eliminates the need for a mounting plate, which is necessary for the above, and can reduce the number of parts and cost. In addition, since a mounting plate is not required, the length from the hydraulic pump means to the steering shaft is shortened, which is advantageous in achieving compactness. Furthermore, since the oil supply port of the hydraulic pump means is located on the cab side, extra parts such as a hose for oil supply are not required, which is advantageous in reducing the number of parts.

According to the second aspect of the present invention, the spacer member is provided between the pump casing and the hull panel so as to adjust the direction of the axis of the drive shaft with respect to the mounting surface of the hull panel. With or without the use, it is possible to make the axial direction of the drive shaft horizontal or to make it perpendicular to the hull panel.

According to the third aspect of the present invention, the tilt angle can be changed by swinging the outer frame member with respect to the pump casing, and the tilt angle can be changed by the engagement relationship between the engagement recess and the engagement pin of the lever member. The angle can be locked.

According to the fourth aspect of the present invention, the tilt means is covered with the bellows, so that the appearance is not impaired.
A tilt function can be secured.

[Brief description of the drawings]

FIG. 1 is a front view showing the appearance of a manual hydraulic steering device according to the present invention.

FIG. 2 is a sectional view showing the internal structure of the device.

FIG. 3 is a side view of the same device with a bellows removed and a part thereof is omitted.

FIG. 4 is an explanatory view of a mounting state of a conventional example.

FIG. 5 is an exploded perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manual hydraulic steering device 2 Dashboard 3 Pump casing 4 Drive shaft 5 Pump mechanism 6 Helm pump unit 7 Steering shaft 11 Front casing 12 Rear casing 12b Oil filler 14 Spacer member 15 Mounting bolt 17 Bellows 21 Oscillating shaft 22 Oscillating block 22c Engaging recess 23 joint means 24 engaging pin 25 lever member

Claims (4)

[Claims] 1. A hydraulic pump means having a pump mechanism inside a pump casing for generating a steering force by operating a drive shaft, a steering shaft connected to the drive shaft of the hydraulic pump means and operating the drive shaft, Tilting means interposed between the drive shaft and the steering shaft for changing the tilt angle between the drive shaft and the steering shaft; and a manual hydraulic steering mounted on the hull panel through the hull panel. An apparatus, wherein the pump casing is directly attached and fixed to the hull panel, and further includes an oil supply port for supplying oil for operating the pump mechanism, wherein the oil supply port is provided on the hull panel. A manual hydraulic steering device, which is located on the driver's cab side in a state where the manual hydraulic steering device is mounted and fixed to the vehicle. 2. The manual pump according to claim 1, wherein said hydraulic pump means has a spacer member disposed between said pump casing and the hull panel to adjust an axial direction of said drive shaft with respect to said hull panel. Hydraulic steering device. 3. The swing block, wherein the tilt means is swingably provided on the pump casing via a swing shaft, and the steering shaft is rotatably fitted around the axis of the swing block. A joint means disposed in the drive shaft and rotatably connecting the steer rig axis to the same axis as the swing axis and an axis in a direction orthogonal to the swing axis, and formed in the swing block in the swing direction. 2. The device according to claim 1, further comprising: a plurality of engagement recesses provided regularly; and a lever member rotatably provided on the pump casing and having an engagement pin engaged with the engagement recess so as to be detachable. Or the manual hydraulic steering device according to 2. 4. A bellows-shaped bellows for covering the tilt means, the bellows having one end connected to the pump casing and the other end connected to a swing block. Manual hydraulic steering system.