JP2019043522A - Outboard motor raising/lowering device - Google Patents

Abstract

To realize an outboard motor raising/lowering device that can automatically change raising/lowering speed in accordance with a state of an outboard motor.SOLUTION: An outboard motor raising/lowering device (1) includes a tilt cylinder (14), a trim cylinder (12), a pump (42), and a tank (18). The pump (42) and the tank (18) are arranged at the same side as viewed from the tilt cylinder (14).SELECTED DRAWING: Figure 2

Description

  The present invention relates to an outboard motor lifting apparatus for lifting and lowering an outboard motor of a hull.

  In the field of hulls, an outboard having a tilt cylinder, mainly for raising and lowering an outboard motor above the water surface, and a trim cylinder, mainly for changing the angle of the outboard motor below the water surface Machine lifters are known (for example, Patent Documents 1 and 2).

Japanese Patent Publication No. 58-028159 Unexamined-Japanese-Patent No. 2-99494

  By the way, in the outboard motor lifting device, the tilt cylinder and the trim cylinder are driven by the hydraulic fluid, but improvement of the layout of the oil passage is desired.

  An object of the present invention is to improve the layout of an oil passage of an outboard motor lifting device.

  To this end, the present invention provides an outboard motor elevator apparatus for raising and lowering an outboard motor, comprising: one or more tilt cylinders, one or more trim cylinders, a hydraulic pressure source, and an oil storage tank, The hydraulic pressure source and the oil storage tank are outboard motor lifting devices disposed on the same side as viewed from the one or more tilt cylinders.

  With such a configuration, the layout can be improved.

  According to the present invention, the layout of the outboard motor elevator can be improved.

FIG. 2 is a view showing a usage example of the outboard motor elevator according to Embodiment 1 and a schematic internal configuration of the outboard motor. FIG. 1 is a front view showing an example of the configuration of an outboard motor elevator according to a first embodiment. FIG. 1 is a side sectional view of an outboard motor elevator according to a first embodiment. FIG. 2 is a perspective view showing an example of the configuration of a cylinder unit of the outboard motor elevator according to the first embodiment. FIG. 1 is a diagram showing a hydraulic circuit of an outboard motor elevator according to a first embodiment. FIG. 8 is a front view showing an example of the configuration of a cylinder unit of an outboard motor elevator according to Embodiment 2. FIG. 14 is a perspective view showing an example of the configuration of a cylinder unit of an outboard motor elevator according to Embodiment 3. It is a front view showing an example of composition of a cylinder unit of an outboard motor rise and fall device concerning a conventional example. It is a figure which shows the hydraulic circuit of the outboard motor lifting device based on a prior art example.

Embodiment 1
Hereinafter, an outboard motor elevator 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 6.

  The outboard motor lifting device 1 is a device for lifting and lowering the outboard motor 300. FIG. 1A is a view showing an application example of the outboard motor lifting device 1, and shows the outboard motor lifting device 1 attached to the rear of the hull (main body) 200 and the outboard motor 300. . The solid line in (a) of FIG. 1 indicates a state in which the outboard motor 300 is lowered, and the broken line in (a) of FIG. 1 indicates a state in which the outboard motor 300 is raised. FIG. 1B is a schematic view schematically showing an internal configuration of the outboard motor 300. As shown in FIG. As shown in (b) of FIG. 1, the outboard motor 300 includes an engine 301, a propeller 303, and a power transmission mechanism 302 that transmits power from the engine 301 to the propeller 303. Here, the power transmission mechanism is constituted by, for example, a shaft or a gear.

  FIG. 2 is a front view showing an example of the configuration of the outboard motor elevator 1, and FIG. 3 is a side sectional view of the outboard motor elevator 1. As shown in FIG. 2, the outboard motor lifting apparatus 1 includes a cylinder unit 10, a pair of stern brackets 70 mounted on the rear of the hull 200, and a swivel bracket 80 mounted on the outboard motor 300. .

  The cylinder unit 10 includes, as an example, two trim cylinders 12, one tilt cylinder 14, a motor 16, a tank 18, an upper joint 22, a base 24, and a pump 42, as shown in FIG. The trim cylinder 12 and the tilt cylinder 14 are provided so as not to move relative to the base 24.

  The number of trim cylinders 12 and tilt cylinders 14 provided in the cylinder unit 10 does not limit the present embodiment, and the cylinder unit 10 including one or more trim cylinders 12 and one or more tilt cylinders 14 is also implemented in this embodiment. Included in the form. Also, the following description is true for the cylinder unit 10 having such an arbitrary number of trim cylinders 12 and tilt cylinders 14.

  The trim cylinder 12 includes a cylinder 12a, a piston 12c (see FIG. 5) slidably provided in the cylinder 12a, and a piston rod 12b fixed to the piston 12c. The tilt cylinder 14 also includes a cylinder 14a, a piston 14c (see FIG. 5) slidably provided in the cylinder 14a, and a piston rod 14b fixed to the piston 14c.

  Further, as shown in FIG. 2, through holes are respectively formed in the base 24 and the stern bracket 70, and the base 24 and the stern bracket 70 are relative to each other through the undershaft 26 penetrating the through holes. It is rotatably connected.

  Further, as shown in FIG. 2, an upper joint 22 is provided at the tip of the piston rod 14 b, and a support member 28 is fixed to the swivel bracket 80. A through hole is formed in each of the upper joint 22 and the support member 28, and the upper joint 22 and the swivel bracket 80 are connected so as to be relatively rotatable via the upper shaft 23 passing through the through holes of these. There is.

  Further, through holes are respectively formed at upper ends of the stern bracket 70 and the swivel bracket 80, and as shown in FIG. 3, the stern bracket 70 and the swivel bracket 80 are formed by the support shaft 32 penetrating the through holes. Are connected rotatably relative to each other.

(Trim area and tilt area)
As the piston rod 14b of the tilt cylinder 14 ascends and descends, the swivel bracket 80 ascends and descends, so the outboard motor 300 ascends and descends.

  The angular area of the outboard motor 300 adjusted by the raising and lowering of the piston rod 14b of the tilt cylinder 14 is composed of the trim area and the tilt area shown in (a) of FIG. The tilt area is an angle area where the tip of the piston rod 12 b of the trim cylinder 12 can not abut the swivel bracket 80, and the angle adjustment of the outboard motor 300 in the tilt area is performed by the piston rod 14 b of the tilt cylinder 14.

  On the other hand, the trim area is an angle area where the tip of the piston rod 12b of the trim cylinder 12 can contact the swivel bracket 80, and the angle adjustment of the outboard motor 300 in the tilt area is performed by the piston rod 12b of the trim cylinder 12 and the tilt It can be done by both of the piston rods 14 b of the cylinder 14. However, as described later, in the present embodiment, the angle adjustment of the outboard motor 300 may be performed only by the piston rod 14b of the tilt cylinder 14 even in the tilt region.

  FIG. 4 is a perspective view showing an example of the configuration of the cylinder unit 10. As shown in FIG. 4, the tank 18 is disposed on the same side as the pump 42 is disposed as viewed from the tilt cylinder 14. In the present embodiment, the pump 42 and the tank 18 are disposed on the left side in a front view as viewed from the tilt cylinder 14 in the front view of the outboard motor elevator 1 shown in FIG.

  The pump 42 and the tank 18 are arranged side by side along the axial direction of the tilt cylinder 14. The tank 18 is, for example, a rectangular box, and the motor 16 is disposed vertically above the tank 18 in the normal installation state.

(Comparison with comparative example)
Hereinafter, the contrast between the outboard motor elevator 1 according to the present embodiment and the outboard motor elevator according to the comparative example will be described with further reference to FIG. 8.

  FIG. 8 is a front view of an outboard motor elevator according to a comparative example. In the outboard motor elevator according to the comparative example, as shown in FIG. 8, the pump 42 and the tank 18 are disposed on the opposite side as viewed from the tilt cylinder 14, so the oil path from the tank 18 to the pump 42 is Must be arranged to straddle the tilt cylinder 14. For this reason, in the outboard motor lifting apparatus according to the comparative example, the number of processing steps is increased. In addition, in the outboard motor lifting device according to the comparative example. Since parts such as sensors constituting the outboard motor 300 may be attached to the position where the tank 18 is disposed, the layout property is not good when the pump 42, the tank 18 and the tilt cylinder 14 are disposed on the opposite side .

  On the other hand, in the outboard motor lifting device 1 according to the present embodiment, the pump 42 and the tank 18 are disposed on the same side as viewed from the tilt cylinder 14, so the tank does not cross the tilt cylinder 14. The oil passage from 18 to the pump 42 can be laid out. Thereby, the number of processes at the time of manufacture of the outboard motor lifting device 1 can be suppressed. Also, the layout of the cylinder unit 10 can be improved.

(Hydraulic circuit)
Next, the hydraulic circuit of the outboard motor lifting apparatus 1 will be described. FIG. 5 is a diagram showing a hydraulic circuit of the outboard motor lifting device 1. As shown in FIG. In FIG. 5, the same members as those described above are denoted by the same reference numerals.

  As shown in FIG. 5, the outboard motor lifting device 1 includes a motor 16, a pump 42, a first check valve 44a, a second check valve 44b, a main valve 48 (pump port), a manual valve 52, a thermal valve. A valve 54, a tilt cylinder 14, a trim cylinder 12, a tank 18, a filter F3, and a first flow path C1 to a seventh flow path C7 are provided.

  The pump 42 as a hydraulic pressure source driven by the motor 16 performs any one of “forward rotation”, “reverse”, and “stop” according to an elevation signal indicating an elevation instruction of the outboard motor by the driver. The hydraulic oil is stored in the tank 18.

  As shown in FIG. 5, the main valve 48 includes a first check valve 48b and a second check valve 48c. The main valve 48 includes a first shuttle chamber 48 d on the first check valve 48 b side and a second shuttle chamber 48 e on the second check valve 48 c side.

  The first flow path C1 connects the pump 42 and the first shuttle chamber 48d, and also connects the pump 42 and the tank 18 via the check valve 44a. The second flow path C2 connects the pump 42 and the second shuttle chamber 48e, and also connects the pump 42 and the tank 18 via the check valve 44b.

  Note that the “connection” in the oil passage configuration described in the present specification is indirectly connected via the other oil passage element or directly connected by the flow passage without passing through another hydraulic element. Both cases are included. Here, other hydraulic elements include, for example, a valve, a cylinder, and a filter.

  The tilt cylinder 14 is divided into an upper chamber 14f and a lower chamber 14g by a piston 14c, and the piston 14c of the tilt cylinder 14 is provided with a shock blow valve 14d as shown in FIG.

  In the present specification, “upper” and “lower” in “upper chamber” and “lower chamber” are simply names for distinguishing each other, and the upper chamber is vertically above the lower chamber. It does not necessarily mean to be located in. Therefore, the "upper chamber" may be expressed as a first chamber, which is a chamber through which the rod connected to the piston passes, of the first chamber and the second chamber partitioned by the piston in the cylinder. The "lower chamber" may be expressed as a second chamber which is a chamber into which the rod connected to the piston does not penetrate, of the first chamber and the second chamber partitioned by the piston in the cylinder.

  In the present specification, the expressions “upper chamber” and “lower chamber” are also used unless there is a particular confusion, but it should be noted that the above points.

  The trim cylinder 12 is divided into an upper chamber 12f and a lower chamber 12g by a piston 12c.

  The first check valve 48b is connected to the lower chamber 14g of the tilt cylinder 14 via the third flow passage C3. On the other hand, the second check valve 48c is connected to the upper chamber 14f of the tilt cylinder 14 via the fourth flow passage C4. Further, as shown in FIG. 5, an upper chamber oil supply valve 56 is connected to the fourth flow path C4.

  A manual valve 52 and a thermal valve 54 are connected to a fifth flow path C5 connecting the third flow path C3 and the fourth flow path C4.

  The first passage C1 and the third passage C3 connecting the main valve 48 and the pump 42 to the lower chamber 14g of the tilt cylinder 14 are collectively referred to as a first oil passage.

  The second shuttle chamber 48e of the main valve 48 is connected to the upper chamber 14f of the tilt cylinder 14 by a fourth flow passage C4. The first shuttle chamber 48d of the main valve 48 is connected to the lower chamber 14g of the tilt cylinder 14 by a third flow path C3.

  The sixth channel C6 connects the third channel C3 and the lower chamber 12g of the trim cylinder 12.

  The seventh flow path C7 connects the first check valve 44a, the second check valve 44b, and the upper chamber 12f of the trim cylinder 12 to each other.

  The tank 18 is connected to a seventh flow path C7 connecting the upper chamber 12f of the trim cylinder 12 and the main valve 48 via a filter F3.

  The first check valve 44a is used to transfer the working oil from the tank 18 to the pump 42 when the pump 42 tries to recover the working oil even when the trim cylinder 12 and the tilt cylinder 14 are contracted. Supply.

  When the tilt cylinder 14 extends, the second check valve 44 b supplies hydraulic oil of the displacement volume of the piston rod 14 b from the tank 18 to the pump 42, and when the trim cylinder 12 extends, The hydraulic fluid of the displacement volume of the piston rod 12 b is supplied from the tank 18 to the pump 42.

  The manual valve 52 can be manually opened and closed, and the hydraulic oil is returned from the lower chamber 14 g of the tilt cylinder 14 to the tank 18 by opening the manual valve 52 at the time of maintenance of the outboard motor lifting apparatus 1 or the like. Be Thereby, the tilt cylinder 14 can be contracted manually.

  The thermal valve 54 returns the surplus hydraulic oil to the tank 18 when the volume of the hydraulic oil increases due to the temperature rise.

(Comparison with comparative example)
Hereinafter, the contrast between the oil passage configuration of the outboard motor elevator 1 according to the present embodiment and the oil passage configuration of the outboard motor elevator according to the comparative example will be described with further reference to FIG.

  In the oil passage circuit of the outboard motor elevator according to the comparative example, as shown in FIG. 9, the oil passage from the tank 18 to the pump 42 and the oil passage from the lower chamber 14g of the tilt cylinder 14 to the tank 18 It passes through the upper chamber 12f of the trim cylinder 12 and connects them. Therefore, when the hydraulic fluid is supplied from the tank 18 to the pump 42 and when the hydraulic fluid is returned from the lower chamber 14g of the tilt cylinder 14 to the tank 18, the hydraulic fluid passes through the upper chamber 12f of the trim cylinder 12 I need it.

  On the other hand, in the outboard motor elevator 1 according to the present embodiment, as described above, the pump 42 and the tank 18 are disposed on the same side as viewed from the tilt cylinder 14. From the viewpoint of oil path configuration, the tank 18 is connected to the tank 18 via the filter F3 in a seventh flow path C7 connecting the upper chamber 12f of the trim cylinder 12 and the main valve 48.

  Therefore, the oil passage from the tank 18 to the pump 42 and the oil passage from the lower chamber 14g of the tilt cylinder 14 to the tank 18 can be configured without passing through the upper chamber 12f of the trim cylinder 12. Therefore, when hydraulic fluid is supplied from the tank 18 to the pump 42 and when hydraulic fluid is returned from the lower chamber 14g of the tilt cylinder 14 to the tank 18, the hydraulic fluid needs to pass through the upper chamber 12f of the trim cylinder 12 Instead, the oil passage configuration can be simplified.

(Operation Example of Outboard Motor Lifting Device 1)
(Rise movement)
When the raising and lowering signal indicates "rising", the pump 42 rotates in the normal direction, and hydraulic fluid is pumped from the pump 42 to the first shuttle chamber 48 d of the main valve 48. As a result, the first check valve 48b is opened, the spool 48a is moved to the first check valve 48b side, and the second check valve 48c is opened. As a result, the hydraulic oil is supplied to the lower chamber 14 g of the tilt cylinder 14, and the hydraulic oil is recovered from the upper chamber 14 f of the tilt cylinder 14.

(Descent operation)
When the raising and lowering signal indicates "down", the pump 42 is reversely rotated and hydraulic fluid is pumped from the pump 42 to the second shuttle chamber 48e of the main valve 48. As a result, the second check valve 48 c is opened, the spool 48 a is moved to the second check valve 48 c side, and the first check valve 48 b is opened. As a result, the hydraulic oil is supplied to the upper chamber 14 f of the tilt cylinder 14, and the hydraulic oil is recovered from the lower chamber 14 g of the tilt cylinder 14.

(Holding state)
If the raising and lowering signal indicates neither "rising" nor "falling", the pump 42 is stopped. When the pump 42 stops, the outboard motor 300 is held in a state in which the movement of the working oil in the hydraulic circuit of the outboard motor lifting device 1 has converged. In the present specification, the case where the raising and lowering signal does not indicate either "rising" or "falling" may be expressed as the case where the raising / lowering signal indicates "holding" for the sake of convenience.

Second Embodiment
The cylinder unit 10a according to the second embodiment will be described below with reference to FIG. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

  FIG. 6 is a front view showing an example of the configuration of the cylinder unit 10a. As shown in FIG. 6, the tank 18 is disposed on the same side as the pump 42 is disposed as viewed from the tilt cylinder 14. The pump 42 and the tank 18 are connected via a tube that constitutes at least a part of the seventh flow path C7.

  The layout of the outboard motor elevator can be improved also by the above-described configuration. Also, the oil passage configuration can be simplified.

Third Embodiment
Hereinafter, the cylinder unit 10b according to the third embodiment will be described with reference to FIG. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

  FIG. 7 is a front view showing an example of the configuration of the cylinder unit 10b. As shown in FIG. 7, the tank 18 is disposed on the same side as the pump 42 is disposed as viewed from the tilt cylinder 14. The pump 42 and the tank 18 are arranged side by side along a direction perpendicular to the axial direction of the tilt cylinder 14.

  The layout of the outboard motor elevator can be improved also by the above-described configuration. Also, the oil passage configuration can be simplified.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

1 Outboard motor lifting device 10, 10a, 10b Cylinder unit 12 Trim cylinder 14 Tilt cylinder 18 Tank (oil storage tank)
42 pump (hydraulic source)
48 Main valve (pump port)
48d, 48e Shuttle room 300 Outboard motor 301 Engine 302 Power transmission mechanism 303 Propeller C1 first flow path (first oil path)
C2 second flow path C3 third flow path (first oil path)
C4 fourth channel C5 fifth channel C6 sixth channel C7 seventh channel

Claims (4)

In the outboard motor lifting device for raising and lowering the outboard motor,
One or more tilt cylinders,
One or more trim cylinders,
A hydraulic source,
Equipped with an oil reservoir,
An outboard motor elevator apparatus, wherein the hydraulic pressure source and the oil storage tank are disposed on the same side as viewed from the one or more tilt cylinders. The pump port further comprising a pump port connected to the hydraulic pressure source, the pump port having a shuttle chamber connected to the first chamber and the second chamber of the tilt cylinder, respectively.
Each trim cylinder is
A piston that divides the trim cylinder into a first chamber and a second chamber;
A rod connected to the piston and passing through a first chamber of the trim cylinder;
The outboard motor elevator according to claim 1, wherein the oil storage tank is disposed in an oil passage connecting the first chamber of the trim cylinder and the pump port. The outboard motor elevator according to claim 1 or 2, wherein the hydraulic pressure source and the oil storage tank are arranged side by side along the axial direction of the one or more tilt cylinders. 3. The outboard motor according to claim 1, wherein the hydraulic pressure source and the oil storage tank are disposed side by side along a direction perpendicular to the axial direction of the one or more tilt cylinders. lift device.

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