JP2001063688A - Hydraulic unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fit a motor of different capacity and different mounting dimension to the same pump housing by fitting a collar to the pump housing, and fixing a motor to the collar. SOLUTION: The step difference part 85A of a collar 83 is fitted to the circumferential part of the pump chamber of a pump housing 60, the pump chamber is liquidtightly sealed with an O-ring, fixing bolts 86 inserted to the fitted part 84A of the collar 83 are threadedly fitted to the fitting part of the pump housing 60, and the collar 83 is fitted to the pump housing 60. Hereby, a motor 61(82) of which the mounting dimension is not conformed to the mounting part of the pump housing 60 can be fitted to the mounting part 84B of the collar 83. Consequently, to the same pump housing 60, a motor 61(82) of different capacity and different mounting dimension can be easily fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic device such as a tilt device for a marine propulsion device or a lifting device for a snow blower.

[0002]

2. Description of the Related Art Conventionally, in a tilt device for a marine propulsion device, a pump is disposed in a pump chamber provided in a pump housing, and a motor connected to the pump is supported by the pump housing.
A tank chamber for storing hydraulic oil supplied to and discharged from the pump is formed in the pump housing, and a cylinder device operated by the hydraulic oil supplied to and discharged from the pump is integrally provided in the pump housing.

In the prior art, a motor and a pump are directly mounted on a pump housing by bolts, respectively.

[0004]

However, in the tilt device for a marine propulsion device, a plurality of types of motors and pumps having different capacities are used in order to cope with a change in specifications for increasing or decreasing the supply flow rate or supply pressure of hydraulic oil. I have prepared it. At this time, the mounting dimensions of the motor and the pump are different depending on their capacities, and the dimensions of the pump housing including the mounting portions of the motor and the pump must also be different. However, it is very difficult to change the entire pump housing integrally including the pump chamber, the tank chamber, and the cylinder device.

An object of the present invention is to make it possible to easily attach motors and pumps having different capacities and different mounting dimensions using the same pump housing.

[0006]

According to the first aspect of the present invention, a pump is disposed in a pump chamber provided in a pump housing, a motor connected to the pump is supported by the pump housing, and the pump is supplied and discharged. A tank chamber for storing hydraulic oil is formed in a pump housing, and in a hydraulic device integrally provided with a cylinder device operated by hydraulic oil supplied and discharged to and from the pump, a collar is attached to the pump housing, The motor is fixed to the collar.

According to a second aspect of the present invention, a pump is disposed in a pump chamber provided in a pump housing, a motor connected to the pump is supported by the pump housing, and hydraulic oil supplied to and discharged from the pump is stored. In a hydraulic device in which a tank chamber is formed in a pump housing and a cylinder device operated by hydraulic oil supplied / discharged to / from the pump is integrally provided in the pump housing, the pump housing has a pump discharge port provided in a flow path of the pump housing. A collar having a communication path for communication is attached, and a pump is fixed to the collar.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a drive joint for connecting the pump and the motor is replaced according to a thickness of a collar. Things.

[0009]

According to the first aspect of the present invention, the following operations are provided. The collar has a mounted portion that matches the mounting portion of the pump housing and a mounting portion that matches the mounting dimensions of the motor.
Thus, a motor whose mounting dimensions do not match the mounting part of the pump housing can be mounted on the mounting part of the collar. Therefore, using the same pump housing, the capacity is different,
Motors with different mounting dimensions can be easily attached.

According to the second aspect of the present invention, the following effects are obtained. The collar has a mounted part that matches the mounting part of the pump housing and a mounting part that matches the mounting dimensions of the pump.
Thus, a pump whose mounting dimensions do not match the mounting portion of the pump housing can be mounted on the mounting portion of the collar. Therefore, using the same pump housing, the capacity is different,
Pumps with different mounting dimensions can be easily attached.

According to the third aspect of the invention, the following operation is provided. Drive joint connecting pump and motor,
By exchanging according to the thickness of the collar, the motor attached to the collar can be reliably connected to the pump, or the motor can be reliably connected to the pump attached to the collar.

[0012]

FIG. 1 is a schematic diagram showing a marine propulsion device,
FIG. 2 is a side view showing the use state of the collar of the tilt device of the first embodiment, FIG. 3 is a cross-sectional view including the cylinder device and the tank of FIG. 2, FIG. 4 is a side view showing the motor mounting portion of FIG. 5 is a cross-sectional view taken along the line VI-VI in FIG. 4, FIG. 7 is a side view showing a state where the collar of the tilt device is not used, FIG. 8 is a hydraulic circuit diagram, and FIG. FIG. 7 is a cross-sectional view illustrating a state of using the collar of the tilt device according to the second embodiment.

(First Embodiment) (FIGS. 1 to 8) As shown in FIG. 1, a marine propulsion device 10 (an outboard motor, but may be an inboard / outboard motor) is mounted on a stern plate 11A of a hull 11 as shown in FIG. The stern bracket 12 is fixed, and the swivel bracket 14 is attached to the stern bracket 12 via the tilt shaft 13.
Are pivotally mounted so as to be tiltable about a substantially horizontal axis. A propulsion unit 15 is pivotally attached to the swivel bracket 14 via a not-shown substantially vertically arranged turning shaft so as to be rotatable around the turning shaft. An engine unit 16 is mounted on an upper part of the propulsion unit 15, and a propeller 17 is provided on a lower part of the propulsion unit 15.

That is, the marine propulsion device 10 tiltably supports the propulsion unit 15 via the tilt shaft 13 and the swivel bracket 14 on the stern bracket 12 fixed to the hull 11 so that the stern bracket 12 and the swivel bracket 14 Cylinder device 2 constituting tilt device 20 between
By controlling the supply or discharge of hydraulic oil from the hydraulic oil supply / discharge device 22 of the tilt device 20 to the cylinder device 21, the cylinder device 21 is expanded and contracted so that the propulsion unit 15 can be tilted.

(Cylinder Device 21) (FIGS. 2 and 3) The cylinder device 21 constituting the tilt device 20 is integrally connected to a pump housing 60 of the hydraulic oil supply / discharge device 22, which will be described later. That is, the cylinder device 21 has a cylinder 31 formed integrally with a pump housing 60 made of an aluminum alloy or the like, and a lower end of the cylinder 31 is provided with a mounting pin insertion hole 31A for attaching to the stern bracket 12.

The cylinder device 21 has a piston rod 33 used by being connected to the swivel bracket 14. The piston rod 33 is moved from a rod guide 34 provided at the open end of the cylinder 31 to a tilt chamber of the cylinder 31. 35 is inserted so as to be able to expand and contract. Rod guide 3
4 is a seal member 36 slidingly contacting the piston rod 33,
A water seal 37 is provided. The piston rod 33 is
A mounting pin insertion hole 33A for the swivel bracket 14 is provided.

The cylinder device 21 includes a cylinder 31
The piston 39 is fixed to an end of the piston rod 33 in the tilt chamber 35 by a nut 38. The piston 39 includes a seal member 40 such as an O-ring that is in sliding contact with the inner surface of the cylinder 31. The piston 39 has a first tilt chamber 35 </ b> A on the side that houses the piston rod 33 and a second tilt chamber 35 </ b> A on the side that does not house the piston rod 33. It is partitioned into two tilt chambers 35B.

The cylinder device 21 includes a vertical hole-shaped oil passage 4 near the cylinder 31 in the pump housing 60.
The first tilt chamber 35 </ b> A and the oil passage 41 communicate with each other through an oil passage 42 formed by cutting the rod guide 34 and an oil passage 43 formed in the cylinder 31. Also, the first tilt chamber 35A
The second tilt chamber 35B is connected to a first oil passage 66A provided in the pump housing 60, and the second tilt chamber 35B is connected to a second oil passage 66B provided in the pump housing 60.

In the cylinder device 21, a sleeve 44 for adjusting the stroke of the piston rod 33 is inserted into the cylinder 31 on the side of the second tilt chamber 35B.

(Hydraulic oil supply / discharge device 22) (FIGS. 2 to 8) The hydraulic oil supply / discharge device 22 constituting the tilt device 20 includes a reversible motor 61, a reversible gear pump 62, a tank 63, and a flow passage with a switching valve. 64, the first tilt chamber 35A and the second tilt chamber 35 of the cylinder device 21 through a first oil passage 66A and a second oil passage 66B provided in the pump housing 60.
B can be supplied with hydraulic oil.

At this time, the hydraulic oil supply / discharge device 22 forms a flow path 64 with a switching valve in the pump housing 60 made of an aluminum alloy casting, and includes a first oil path 66A, a second oil path 66B, and the like. The pump housing 60 includes the cylinder 31 of the cylinder device 21 as described above,
The pump chamber 6 is located close to one side of the cylinder 31.
7 is provided. The pump chamber 67 contains the hydraulic oil and has the pump 62 immersed in the hydraulic oil. The pump 62 is fixed to the pump housing 60 with fixing bolts 68 (FIG. 5).

The pump 62 is, for example, a gear pump having a cassette pump structure, in which a meshing body of a drive gear and a driven gear is housed in a case, and a drive shaft 62A connected to the drive gear is located on an output shaft 61A of the motor 61. It is fixed to the pump housing 60 so as to match.
The pump 62 has two discharge ports 62 </ b> B (not shown) for normal rotation and reverse rotation,
And two suction ports 62C for forward rotation and reverse rotation.
(Not shown) is open to the pump chamber 67.

The hydraulic oil supply / discharge device 22 has a motor 61 for driving a pump 62 disposed above a pump chamber 67 provided in a pump housing 60. Motor 61
The end plate 71 is fixed to the lower end of the iron yoke 70, and when the motor 61 is a standard motor 81 described later, the end plate 71
The lower step 71A is connected to the pump chamber 6 of the pump housing 60.
7 around the pump chamber 67 with the O-ring 71B.
And the end plate 71 is fastened to the pump housing 60 with fixing bolts 72. Output shaft 6 of motor 61
1A penetrates the end plate 71 and is connected to a drive shaft 62A of the pump 62 via a drive joint 73.

The hydraulic oil supply / discharge device 22 has a tank chamber 74 of a tank 63 at a position adjacent to the other side of the cylinder 31 in the pump housing 60, and supplies hydraulic oil supplied / discharged to the pump 62 to the tank chamber 74. It can be stored.
The pump housing 60 connects the tank chamber 74 to the pump chamber 67.
Is in communication with In FIG. 3, reference numeral 75 denotes an oil supply plug.

However, in the hydraulic oil supply / discharge device 22, while using the same pump housing 60, the standard motor 81 is used as the motor 61 in addition to the standard motor 81.
A larger capacity motor 82 can be applied. That is, as shown in FIG. 7, the standard motor 81 is used by fastening the end plate 71 of the motor 81 (61) to the pump housing 60 with the fixing bolt 72 as described above. On the other hand, the motor 82
As shown in FIG. 6, the pump chamber 6 of the pump housing 60
A collar 83 is attached to the upper end surface of the motor 7, and an end plate 71 of the motor 82 (61) is fastened to the collar 83 by a fixing bolt 72 for use.

As shown in FIGS. 4 and 5, the collar 83 has a mounting portion 84A which matches a mounting portion for the standard motor 81 provided on the pump housing 60, and a motor 82.
And a mounting portion 84B that matches the mounting dimensions of Also,
The collar 83 includes a stepped portion 85A that fits around the pump chamber 67 of the pump housing 60 and a motor 82 (6).
The fitting hole 8 into which the lower step 71A of the end plate 71 of 1) fits.
5B.

Therefore, the motor 82 is supported by the pump housing 60 using the collar 83 as follows.

(1) The stepped portion 85A of the collar 83 is fitted around the pump chamber 67 of the pump housing 60, and the pump chamber 67 is sealed with an O-ring 71B in a liquid-tight manner.
The fixing bolt 86 inserted into the third mounted portion 84A is screwed to the mounting portion of the pump housing 60 (the mounting portion for fixing the standard motor 81), and the collar 83 is mounted to the pump housing 60.

(2) The lower step 71A of the end plate 71 of the motor 82 (61) is fitted into the fitting hole 85B of the collar 83, and
The fitting hole 85B is sealed with a ring 87 in a liquid-tight manner, and the end plate 7
1 is attached to the fixing portion 8 of the collar 83.
4B, and the motor 82 is fixed to the collar 83.

(3) In the mounting process of the motor 82 according to the above (2), a drive joint 73 that is longer by the thickness of the collar 83 is used as the drive joint 73 connecting the pump 62 and the motor 82 (61).

As shown in FIG. 8, the hydraulic oil supply / discharge device 22 includes a shuttle type switching valve 91, check valves 92 and 93, a contraction side relief valve 94, an extension side relief valve 95, and a manual / thermal valve 96. Prepare.

The shuttle type switching valve 91 has a shuttle piston 101, a first check valve 102A and a second check valve 102B located on both sides of the shuttle piston 101, and the first check valve 102A of the shuttle piston 101.
A first shuttle chamber 103A is defined on the side, and a second shuttle chamber 103B is defined on the second check valve 102B side of the shuttle piston 101. The first check valve 102A is
The pump 62 is opened by the oil supply pressure applied to the first shuttle chamber 103A via the line 64 by the forward rotation of the pump 62, and the second check valve 102B is turned on by the reverse rotation of the pump 62 via the line 64 to the second shuttle chamber. The opening operation is enabled by the oil supply pressure applied to 103B. Also,
The shuttle piston 101 can open the second check valve 102B by the oil supply pressure due to the forward rotation of the pump 62, and can open the first check valve 102A by the oil supply pressure due to the reverse rotation of the pump 62. Shuttle type switching valve 1
01 is connected to the first oil passage 66A, and the second check valve 102B is connected to the second oil passage 66B.

A check valve 92 is provided at an intermediate portion of the connection line between the pump 62 and the tank 63. That is, when the ship propulsion device 10 is tilted up, the internal volume of the cylinder 32 increases by the retreat volume of the piston rod 33 and the amount of circulating oil of the operating oil becomes insufficient. In addition, the shortage of the circulating oil amount can be compensated from the tank 63 to the pump 62.

A check valve 93 is provided at an intermediate portion of the connection line between the pump 62 and the tank 63. That is, at the time of the tilt-down operation of the marine propulsion device 10, the piston 39 reaches the maximum contraction position, and the tilt-down is completed.
When the return oil from 5B to the pump 62 is exhausted, if the pump 62 is operated, the check valve 93 is opened and the hydraulic oil can be supplied from the tank 63 to the pump 62.

The contraction-side relief valve 94 is connected to the pipe line 64 to continue returning the remaining rod oil to the tank 63 during the tilt-down operation, and to keep the pump 62 running even after the tilt-down operation is completed. In order to protect the hydraulic circuit at this time, the circuit pressure is released to the tank 63 at the set pressure.

The extension side relief valve 95 is built in the shuttle piston 101, and in order to protect the hydraulic circuit when the pump 62 continues to operate even after the tilt-up is completed, the circuit pressure is set at the set pressure to the pump suction side. It is something to escape.

The manual / thermal valve 96 is connected to the second oil passage 66B.
The cylinder device 21 is manually contracted by connecting the second tilt chamber 35B to the tank 63, so that the propulsion unit 15 can be trimmed down and tilted down. Further, the manual / thermal valve 96 includes a thermal relief valve 96A, and when the hydraulic oil of the cylinder 21 abnormally increases in pressure due to heat, the circuit pressure is released to the tank 63 at the set pressure.

Hereinafter, the basic operation of the tilt device 20 will be described. (1) Tilt-down When the motor 61 and the pump 62 are rotated forward, the oil discharged from the pump 62 becomes the first check valve 102 of the shuttle type switching valve 91.
A is opened, and the second check valve 102B is also opened via the shuttle piston 101. As a result, the oil discharged from the pump 62 becomes the first check valve 102A,
The hydraulic fluid is supplied to the first tilt chamber 35A of the cylinder device 21 through the first oil passage 66A, and the hydraulic oil in the second tilt chamber 35B of the cylinder device 21 is supplied to the second oil passage 66B and the second check valve 10A.
After returning to the pump 62 through 2B, the cylinder device 21 is contracted and tilted down.

(2) When the motor 61 and the pump 62 are rotated in the reverse direction, the oil discharged from the pump 62 is supplied to the second check valve 102 of the shuttle type switching valve 91.
At the same time as opening B, the first check valve 102A is also opened via the shuttle piston 101. Thereby, the discharge oil of the pump 62 is supplied to the second check valve 102B,
The hydraulic fluid is supplied to the second tilt chamber 35B of the cylinder device 21 through the second oil passage 66B, and the hydraulic oil in the first tilt chamber 35A of the cylinder device 21 is supplied to the first oil passage 66A and the first check valve 10A.
Returning to the pump 62 through 2A, the cylinder device 21 is extended and tilted up.

Therefore, according to the present embodiment, the following operations are provided. The collar 83 includes a mounted portion 84A that matches the mounting portion of the pump housing 60, and a mounting portion 84B that matches the mounting dimensions of the motor 61 (82). Thus, the motor 61 (82) whose mounting dimensions do not match the mounting portion of the pump housing 60 can be mounted on the mounting portion 84B of the collar 83. Therefore, using the same pump housing 60, the motors 61 (82) having different capacities and different mounting dimensions can be easily attached.

By changing the drive joint 73 connecting the pump 62 and the motor 61 according to the thickness of the collar 83, the motor 61 attached to the collar 83 is replaced.
(82) can be reliably connected to the pump 62.

By mounting the motor 61 on the upper end surface of the pump chamber 67 of the pump housing 60 via the collar 83, the capacity of the pump chamber 67 can be increased by the collar 83 as the capacity of the motor 61 increases.

(Second Embodiment) (FIG. 9) The tilt device 120 of the second embodiment allows the propulsion unit 15 to tilt by expanding and contracting the cylinder device 121, similarly to the tilt device 20 of the first embodiment. .

(Cylinder Device 121) (FIG. 9) The cylinder device 121 of the tilt device 120 is integrally connected to a pump housing 160 of the hydraulic oil supply / discharge device 122 which will be described later. That is, the cylinder device 121 has an outer cylinder 131 and an inner cylinder 132 formed of a drawn steel pipe.
132 is integrally connected to the pump housing 160.
The pump housing 160 is made of, for example, an aluminum alloy casting, and has a mounting pin insertion hole 160A for the stern bracket 12.

The cylinder device 121 includes a piston rod 13 used in connection with the swivel bracket 14.
3 and the piston rod 133 is connected to the outer cylinder 13
A rod guide 134 provided at the opening end of the first cylinder 132 is inserted into a tilt chamber 135 of the inner cylinder 132 so as to be extendable and contractible. The rod guide 134 includes a seal member 136 such as an O-ring that slides on the piston rod 133 and a water seal 137. The piston rod 133 has a mounting pin insertion hole 133 </ b> A to the swivel bracket 14.

The cylinder device 121 is provided with a piston rod 133 in the tilt chamber 135 of the inner cylinder 132.
Has a piston 139 fixed with a nut 138 at the end. The piston 139 includes a seal member 141 such as an O-ring that is in sliding contact with the inner surface of the inner cylinder 132. The piston 139 includes a tilt chamber 135, a first tilt chamber 135A that houses the piston rod 133, and a tilt chamber 135 that does not house the piston rod 133. It is partitioned into a second tilt chamber 135B.

The cylinder device 121 has a large-diameter hole 142A and a medium-diameter hole 142 concentric with the pump housing 160.
B, a large-diameter portion 143A, a medium-diameter portion 143B, and a small-diameter portion 143C provided with a small-diameter hole 142C concentric with the rod guide 134.
Is provided. One end of the outer cylinder 131 is fitted into the large-diameter hole 142A of the pump housing 160 via a sealing member 144 such as an O-ring, and the other end of the outer cylinder 131 is fitted into the large-diameter portion 143A of the rod guide 134. It is fitted through a seal member 145 such as a ring and fixed by a caulking portion 146. Further, one end of the inner cylinder 132 is fitted into the small diameter hole 142C of the pump housing 160 via a seal member 147 such as an O-ring, and the other end of the inner cylinder 132 is fitted into the small diameter portion 143C of the rod guide 134. And fix it. Accordingly, a ring-shaped oil passage 148 is formed between the outer cylinder 131 and the inner cylinder 132, and the first tilt chamber 135A and the oil passage 148 are connected to the rod guide 134.
The oil path 149 is opened to the middle diameter portion 143B of the oil tank.
Further, an oil passage 148 communicating with the first tilt chamber 135A is provided.
Are connected to a first oil passage 166A communicating with the medium diameter hole 142B of the pump housing 160, and the second tilt chamber 135B is communicated to a second oil passage 166B provided in the pump housing 160.

The cylinder device 121 includes a piston 13
9 has an extension side buffer valve 150. Extension side buffer valve 150
Is opened at a set pressure to protect the hydraulic circuit when an impact force in the direction of extension of the cylinder device 121 is applied at the time of driftwood collision with the propulsion unit 15 or the like, and the first tilt chamber 135 is opened.
The hydraulic oil of A is transferred to the second tilt chamber 135B so that the piston rod 133 can be extended.

Here, a configuration in which the cylinder device 121 is connected to the pump housing 160 will be described.

(1) Large-diameter hole 14 of pump housing 160
A ring groove 151 having a circular cross section is provided in 2A. One end of the outer cylinder 131 is inserted into the large-diameter hole 142A, and one end of the outer cylinder 131 is bulged by bulging to form a bulge 152. The bulge 152 is engaged with the above-described ring groove 151. Combine. In this bulging process, an elastic body such as urethane inserted into the outer cylinder 131 is pressurized by a pressurizing piston (the pressurization of the liquid sealed in the outer cylinder 131, the diameter expansion of the split ring inserted into the outer cylinder 131, etc. are also possible). Then, the outer cylinder 131 is deformed so as to follow the ring groove 151 of the pump housing 160, for example.

(2) The pump housing 16 according to the above (1)
0 to the outer cylinder 131 fixed to the inner cylinder 132
And the one end of the inner cylinder 132 is fitted into the small-diameter hole 142C of the pump housing 160. In the assembly of the inner cylinder 137, the piston 139, the piston rod 133, the rod guide 134, and the like are assembled in the inner cylinder 132 before insertion into the outer cylinder 131.

(3) The caulking portion 146 at the other end of the outer cylinder 131 is connected to the rod guide 13 of the inner cylinder 132 assembly.
4. Caulk around and fix.

(Hydraulic oil supply / discharge device 122) (FIG. 9) The hydraulic oil supply / discharge device 122 includes a reversible motor 161, a reversible gear pump 162, a tank 163, and a flow path 164 with a switching valve.
(Not shown), and supplies and discharges hydraulic oil to the first tilt chamber 135A and the second tilt chamber 135B of the cylinder device 121 via the first oil path 166A and the second oil path 166B provided in the pump housing 160. Make it possible.

At this time, the hydraulic oil supply / discharge device 122 forms a flow path 164 with a switching valve in the pump housing 160 made of an aluminum alloy casting, and the first oil path 166A and the second oil path 1
66B and the like. Then, the pump housing 160
Is a large-diameter hole 14 for integrating the cylinder device 121.
2A, the medium-diameter hole 142B, and the small-diameter hole 142C are provided as described above, and the pump chamber 167 is provided at a position close to the integral coupling portion of the cylinder device 121. Pump room 1
Reference numeral 67 denotes a state in which the operating oil is stored and the pump 162 is immersed in the operating oil. Pump 162
It is fixed to the pump housing 160 by bolts 168.

In the hydraulic oil supply / discharge device 122, a motor 161 for driving the pump 162 is disposed above a pump chamber 167 provided in the pump housing 160, and the tank 163 is covered by a tank housing 174 covering the motor 161. It constitutes. And the motor 161
The end plate 172 is fixed to the opening at the lower end of the iron yoke 170 via a sealing member such as an O-ring while being fixed in a liquid-tight manner, and stepped portions 172A and 172B are provided above and below the end plate 172 to provide a lower stepped portion. 172B is fitted around the pump chamber 167 of the pump housing 160, sealed with an O-ring 183 in a liquid-tight manner, and the tank housing 1 is mounted on the upper step portion 172A.
74, the tank housing 174 and the end plate 172 are fastened to the pump housing 160 by bolts (not shown). Less than,
It will be described in detail.

The hydraulic oil supply / discharge device 122 is connected to a mounting portion 1 (described later) of a mounting seat 170A of the iron yoke 170 of the motor 161.
70B is fixed to a synthetic resin end plate 172 for the motor 161 by a set screw 171. The lead wire 201 of the motor 161 is drawn out from the side of the end plate 172 to the outside.
The end plate 172 of the motor 161 is fixed around the pump chamber 167 of the pump housing 160 together with the mounting portion of the mounting seat of the tank housing 174 by bolts (not shown), and seals the pump chamber 167. Motor 161
The output shaft 161A of the pump 162 penetrates the end plate 172 in a liquid-tight manner and is connected to the drive shaft 162A of the pump 162 by the drive joint 178A.
Connected via

The hydraulic oil supply / discharge device 122 includes a motor 1
The yoke 170 of the motor 161 is covered with a tank housing 174 made of a synthetic cylinder having a shape along the outer shape of the yoke 170 of the motor 61.
74 is fixed to the pump housing 160 together with the end plate 172 of the motor 161 by bolts (not shown),
The space between the tank housing 174 and the yoke 170 of the motor 161 is referred to as a tank chamber 175. The tank housing 174 has a lubrication plug 2
02. In FIG. 9, L is the oil level.

The hydraulic oil supply / discharge device 122 is connected to the motor 16
The first end plate 172 is provided with an oil passage 176, and this oil passage 176 is provided.
The tank chamber 175 and the pump chamber 167 communicate with each other.

However, in the hydraulic oil supply / discharge device 122, the standard pump 191 (not shown) is used as the pump 162 (for example, a gear pump similar to the pump 62 of the first embodiment) while using the same pump housing 160. ), A pump 192 having a larger capacity than the standard pump 191 can be applied. That is, the standard pump 191 is directly fixed to the pump housing 160 by the bolt 168. On the other hand, the pump 192 is connected to the pump chamber 16 of the pump housing 160.
The collar 193 is attached to the bottom surface of the base 7 and is fixed to the collar 193 with bolts 168.

As shown in FIG. 9, the collar 193 has a mounting portion 194A that matches the mounting portion for the standard pump 191 provided on the pump housing 160, and the pump 1
92, and a mounting portion 194B that matches the mounting size of 92.
Further, the collar 193 includes a communication path (not shown) that connects the discharge port of the pump 192 to the flow path of the pump housing 160.

Accordingly, the pump 192 is fixed to the pump housing 160 using the collar 193 as follows.

(1) A fixing bolt 195 inserted into the mounting portion 194A of the collar 193 is screwed into a mounting portion of the pump housing 160 (a mounting portion for fixing the standard pump 191).
The collar 193 is attached to the pump housing 160.

(2) Bolt 16 inserted into pump 192
8 to the mounting portion 194B of the collar 193, and the pump 1
92 is fixed to the collar 193.

(3) In the mounting process of the pump 192 according to the above (2), the discharge port of the pump 192 is matched with the above-described communication path of the collar 193, and the discharge port of the collar 192 is connected to the flow path of the pump housing 160. Let me know.

(4) In the mounting process of the pump 192 according to the above (2), a drive joint 178 that connects the pump 192 (162) and the motor 161 is shorter by the thickness of the collar 193.

Therefore, according to the present embodiment, the following operations are provided. The collar 193 includes a mounted portion 194A that matches the mounting portion of the pump housing 160, and a mounting portion 194B that matches the mounting dimensions of the pump 162 (192). Thus, the pump 162 (192) whose mounting dimensions do not match the mounting section of the pump housing 160 can be mounted on the mounting section 194B of the collar 193. Therefore, using the same pump housing 160, pumps 162 (192) having different capacities and different mounting dimensions can be easily attached.

The pump 162 (192) and the motor 161
And the drive joint 178 connecting the
The motor 161 can be reliably connected to the pump 162 (192) attached to the collar 193 by exchanging according to the thickness of the third.

By providing a communication path for connecting the discharge port of the pump 162 (192) to the flow path of the pump housing 160 in the collar 193, the pump attached to the collar 193 is reliably connected to the flow path of the pump housing 160. it can.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design may be changed without departing from the scope of the present invention. The present invention is also included in the present invention. For example, in the embodiment of the present invention, each of the motor fixing collar and the pump fixing collar may be provided with two or more types of motors and mounting portions for pumps. If a single collar is used, two or more types of motors and pumps can be attached to the same pump housing.

Further, in the hydraulic device of the present invention, two colors of a motor fixing collar and a pump fixing collar may be used in combination.

The hydraulic device of the present invention can be applied not only to a tilt device for a marine propulsion device but also to a lifting device for a snow blower.

[0072]

As described above, according to the present invention, motors and pumps having different capacities and different mounting dimensions can be easily mounted using the same pump housing.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a marine propulsion device.

FIG. 2 is a side view showing a state of using the collar of the tilt device of the first embodiment.

FIG. 3 is a sectional view including a cylinder device and a tank of FIG. 2;

FIG. 4 is a side view showing a motor mounting portion of FIG. 2 taken out.

FIG. 5 is a sectional view of a main part of FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4;

FIG. 7 is a side view showing a state where the collar of the tilt device is not used.

FIG. 8 is a hydraulic circuit diagram.

FIG. 9 is a cross-sectional view illustrating a state of using the collar of the tilt device according to the second embodiment.

[Explanation of symbols]

 20, 120 Tilt device (hydraulic device) 21, 121 Cylinder device 60, 160 Pump housing 61, 81, 82, 161 Motor 62, 162, 191, 192 Pump 67, 167 Pump room 73, 178 Drive joint 74, 175 Tank room 83, 193 colors

Claims (3)

[Claims] A pump is disposed in a pump chamber provided in a pump housing, a motor connected to the pump is supported by the pump housing, and a tank chamber for storing hydraulic oil supplied to and discharged from the pump is formed in the pump housing. A hydraulic device comprising a pump housing integrally provided with a cylinder device operated by hydraulic oil supplied to and discharged from a pump, wherein a collar is attached to the pump housing and a motor is fixed to the collar. . 2. A pump chamber is provided in a pump housing, a pump connected to the pump is supported by the pump housing, and a tank chamber for storing hydraulic oil supplied to and discharged from the pump is formed in the pump housing. A hydraulic device comprising a pump housing and a cylinder device operated by hydraulic oil supplied to and discharged from a pump, wherein the pump housing includes a communication path for connecting a discharge port of the pump to a flow path of the pump housing. A hydraulic device characterized by attaching a collar and fixing a pump to the collar. 3. The hydraulic device according to claim 1, wherein a drive joint that connects the pump and the motor is replaced according to a thickness of a collar.