JPH10119891A - Outboard engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attractive looking outboard engine which can prevent rising of splashing. SOLUTION: The main body of an outboard engine is attached to a ship by an attaching bracket 18. The attaching bracket 18 is provided with a hollow pivot shaft 25 which can turn freely. The upper part of the pivot shaft 25 is attached to the outboard engine main body through an upper mount, and a lower mount housing 31 is fixed on the lower part and the lower mount housing 31 is attached to the outboard engine through a lower mount. A first blocking member 25a which prevents rising of splashing is placed inside the pivot shaft 25 and a second blocking member which prevents rising of splashing is placed in an opening between the lower mount housing and the outboard engine main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a motor boat,
The present invention relates to an outboard motor mounted on a small boat such as a yacht or a fishing boat.

[0002]

2. Description of the Related Art A conventional outboard motor is shown in FIGS.
This will be described with reference to FIG. FIG. 5 is a side view of a conventional outboard motor mounted on a ship. FIG. 6 is a plan sectional view showing the vicinity of a portion to which a conventional lower mount is attached. 7A and 7B are explanatory views of an outboard motor to which a splash prevention plate is attached. FIG. 7A is a side view of a main part of the outboard motor, and FIG.
It is bb sectional drawing. In FIG. 5, the hull 01 and the transom height of the marine vessel 01 to which the outboard motor is mounted are usually determined in consideration of the characteristics of the outboard motor at the time of design. The ship 01 designed in this manner is shown by a two-dot chain line, and the splash of water generated from the stern or the outboard motor, so-called splash 02, is suppressed by the first splash plate 03 of the outboard motor. ing.

However, there is a case where a ship is manufactured without considering the characteristics of the outboard motor and the outboard motor is mounted on the ship. In such a case, as shown by the solid line in FIG. 5, the transom height may be low, and the bottom of the boat may have a round shape, and the splash 06 generated from the stern, the outboard motor, etc. Outboard first splash plate 0
3 and the first splash plate 03
May not be suppressed. And the splash 0
6 rises through the interior 08 of the hollow pivot shaft 07 and the vertical gap in the lower mount housing 09 to reach the cowling 011,
It may flow forward along the lower surface of 11 and enter the vessel 01. In addition, the splash 06 that has reached the cowling 011 may enter the cowling 011 from a hole such as a guide wire or a sealing portion and hit the engine 012 or an electrical component, causing an engine trouble or damage to the electrical component. .

[0004] Therefore, a splash prevention plate 014 shown in FIG. 7 is bolted to the lower mount housing 09 to cover the front and lower sides of the front part of the lower mount housing 09. And Splash 06
Is the inside 08 of the pivot shaft 07 and the vertical clearance 0 between the lower mount housing 09 and the upper case 020.
The splash prevention plate 014 made of the sheet metal prevents the flow to 23.

Next, the details of the gap 023 between the lower mount housing 09 and the upper case 020 will be described.
explain. In FIG. 6, a conventional bush type rubber lower mount 016 includes an outer cylinder 017 and an inner cylinder 01.
8 and is fixed by baking.
The lower mount cover 019 and the upper case 020 of the outboard motor main body are attached so as to be sandwiched therebetween. The inner cylinder 018 is connected to a lower mount housing 09 by bolts 21, and the lower mount housing 09 is fixed to a lower end of the pivot shaft 07. A gap 023 penetrating in the up-down direction is formed between the lower mount housing 09 and the upper case 020. Due to the gap 023, the upper case 0 generated when the outboard motor body vibrates or the like.
Relative movement between the lower housing 20 and the lower mount housing 09, that is, forward and backward movement, swinging, and the like are allowed. Therefore, the vibration of the outboard motor main body is limited to the upper case 020.
Is not directly transmitted to the lower mount housing 09 but is attenuated by the lower mount 016 having elasticity and transmitted to the boat 01. As described above, the gap 023 is necessary, but the splash 06 may rise through the gap 023 as described above.

[0006]

The splash prevention plate 014 externally attached to the lower mount housing 09 impairs the appearance of the outboard motor and has a poor appearance.
The reputation of the buyer is not good. Also, the splash prevention plate 0
14 is made of sheet metal and has a high manufacturing cost. Further, a shift rod 024 is disposed in the interior 08 of the pivot shaft 07 in the up-down direction. The shift rod 024 includes an upper shift rod 026 and a lower shift rod 027, and is located immediately below the pivot shaft 07. , Connecting tool 028
Are connected by Therefore, the splash prevention plate 014 attached to the lower part of the pivot shaft 07 covers both sides of the connecting tool 028, and the upper shift rod 026.
When connecting the lower shift rod 027 and the lower shift rod 027 with the connecting tool 028, the splash prevention plate 014 hinders the operation and takes time and effort.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an outboard motor which can prevent the rise of splash and has a good appearance.

[0008]

The main body of the outboard motor according to the present invention is mounted on a boat with a mounting bracket (18). The mounting bracket has a rotatable hollow pivot shaft (25). The pivot shaft has an upper part attached to the outboard motor body via an upper mount (29), and a lower mount housing (31) fixed to a lower part, and the lower mount housing is used to mount the lower mount. Attached to the outboard motor body. In addition, inside the pivot shaft, a blocking member (25a,
56) are arranged.

[0009] In addition to the blocking member, a second blocking member (54) for blocking the rise of the splash may be disposed in a gap between the lower mount housing and the outboard motor main body.

Then, an aperture (25) is provided inside the pivot shaft.
a) may be formed.

Further, a bush (56) may be fitted inside the pivot shaft.

A shift rod (27) that moves to an upper forward shift position when moving forward and to a lower reverse shift position when moving backward is disposed inside the pivot shaft, and is vertically movable. Is the closing member (61)
The closing member may close the lower end of the opening of the pivot shaft when the shift rod is in the forward shift position.

[0013] A lower mount mounting portion (40) to which the block type lower mount is mounted is formed on each of both side surfaces of a front portion of the outboard motor main body, and is provided on the front side of the lower mount mounting portion. ,
An overhang (47) that projects in front of the lower mount
Is formed, and the mounting bracket has a rotatable pivot shaft, and a front portion of a lower mount housing is fixed to a lower end portion of the pivot shaft,
The rear part of the lower mount housing branches right and left to cover and engage the outer sides of the lower mounts, and a front main mount (53) is provided near the base of the branch of the lower mount housing. The front surface of the main mount is opposed to the front end of the outboard motor body, and a front submount (54) is provided between the front surface of the overhang and the lower mount housing. May have been.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of an outboard motor according to the present invention will be described with reference to FIGS. FIG. 1 is a side view of an outboard motor according to the present invention. FIG. 2 is an explanatory diagram of the pivot shaft support pipe and the pivot shaft in a state where the lower mount housing is attached.
(A) is a sectional view of the first embodiment, and (b) is a sectional view of the second embodiment. 3A and 3B are explanatory views of the vicinity of a portion where the lower mount is mounted, wherein FIG. 3A is a plan sectional view, and FIG. 3B is a bb sectional view of FIG.

The outboard motor is covered by a housing consisting of an upper cowling 1, a lower cowling 2, an upper casing 3 and a lower casing 4 in this order from the upper side. Near the lower end of the upper casing 3, a first splash plate 6 is integrally formed.
An auxiliary splash plate 7 smaller than the first splash plate 6 is integrally formed near the upper end of the lower casing 4. An engine 9 is provided in a cowling composed of an upper cowling 1 and a lower cowling 2, and an output shaft of the engine 9 is connected to a drive shaft 10. Drive shaft 1
0 penetrates the inside of the upper casing 3 in the vertical direction,
The lower end reaches the lower part of the lower casing 4, and drives the propeller shaft 14 with the propeller 12 attached to the rear end through a transmission mechanism such as a bevel gear.

A mounting bracket 18 for mounting the outboard motor on a small boat has a clamp 19 at a front end thereof.
The clamp 19 is fastened and fixed to a transom of a small boat. A pivot shaft support pipe 24 is provided at a rear portion of the mounting bracket 18. A pivot shaft 25 is rotatably inserted into the pivot shaft support pipe 24, and upper and lower ends of the pivot shaft 25 are pivot shaft support pipes. It protrudes out of the pipe 24. The pivot shaft 25 is hollow, and has a plurality of diaphragm walls 25a formed therein. Also, pivot shaft 2
A shift rod 27 penetrates through the inside of the gear 5, and the shift rod 27 switches the transmission mechanism for transmitting the rotational force of the drive shaft 10 to the propeller shaft 14 between forward, neutral, and reverse. The shift rod 27 includes an upper shift rod 27a and a lower shift rod 27b, and the upper shift rod 27a and the lower shift rod 27b are connected by a connecting member 27c.

The upper end of the pivot shaft 25 projects rearward, and is formed of an elastic rubber upper mount 2.
9, it is attached to a guide exhaust (not shown) fixed on the upper casing 3. This guide exhaust is arranged in the lower cowling 2, and the engine 9 is mounted on the guide exhaust.

The lower mount housing 31 attached to the lower end of the pivot shaft 25 is divided into left and right parts, and is constituted by a pair of left and right housing parts 32, 33. The left housing part 32 and the right housing part 33 have substantially the same structure. When the left housing part 32 is turned upside down, it becomes the right housing part 33. This pair of housing parts 32, 33
Are formed with four bolt holes 35 at the front. Then, the lower end of the pivot shaft 25 is sandwiched between the left and right housing parts 32 and 33 from both right and left sides, a bolt 36 is inserted into the bolt hole 35, and a nut 37 is screwed into a tip end of the bolt 36 to form the housing parts 32 and 33. To fix the pivot shaft 25 between the housing parts 32 and 33.

A concave portion 40 is formed on each of the left and right sides of the lower front side of the upper casing 3, and a block-shaped rubber lower mount 41 is fitted into the concave portion 40 as the lower mount attaching portion. ing. By attaching the lower mount 41 to the concave portion 40 in this manner, the lower mount 41 is prevented from moving up and down and back and forth with respect to the upper casing 3. A recess 45 is formed at the rear of the housing parts 32 and 33 as a lower mount attachment portion. The recess 45 fits outside the lower mount 41 having elasticity, and the lower mount 41 is attached to the housing part 32. , 33 are prevented from moving up and down and back and forth by the concave portions 45 of the housing parts 32, 33.

A projecting portion 47 is formed in front of the concave portion 40 of the upper casing 3 so as to project to the side. On the other hand, a step 41a is formed at the front of the lower mount 41, and the step 41a is formed by the front walls 40a, 45a of the recesses 40, 45.
And a front end portion 41b formed to protrude forward from the step portion 41a, protrudes forward from the front walls 40a, 45a, and faces the rear surface of the overhang portion 47 of the upper casing 3. .

Further, on the rear surface of the lower mount housing 31 where the pivot shaft 25 is held,
A concave portion 51 is formed, and a rubber-made front main mount 53 having elasticity is fitted into the concave portion 51 as a front mount attaching portion, and a rear surface of the front main mount 53 faces a front end of the upper casing 3. Abut. Front main mount 53
A rubber front submount 54 having elasticity is integrally formed on both sides of the front submount 5.
Reference numeral 4 is located in front of the overhang 47 of the upper casing 3 and fills a gap between the lower mount housing 31 and the overhang 47 of the upper casing 3.

The lower mount 41, the front main mount 53 and the front sub mount 54
Bolts 36 and nuts 37 make housing parts 32 and 33
Before tightening the housing parts 32, 3
3 and is fitted between the upper casing 3.
Then, the lower mount housing 31 is fixed to the pivot shaft 25 by tightening the bolts 36 and the nuts 37, and the lower mount 41, the front main mount 53, and the front submount 54 are attached. In this manner, the front part of the lower mount housing 31 is fixed to the lower end part of the pivot shaft 25, and the rear part of the lower mount housing 31 branches right and left to cover the outside of each lower mount 41. Are engaged. And the lower mount housing 3
A front main mount 53 is disposed at the base of the first branch, and the rear surface of the front main mount 53 faces the front end of the upper casing 3 which is the main body of the outboard motor. Further, a front submount 54 is provided between the front surface of the overhang portion 47 and the lower mount housing 31.

In this manner, the outboard motor main body is attached to the pivot shaft 25, and the outboard motor main body is
5, and rotates integrally with the pivot shaft 25. Therefore, when the pivot shaft 25 rotates with respect to the pivot shaft support pipe 24 of the mounting bracket 18, the outboard motor body that rotates integrally with the pivot shaft 25 rotates with respect to the mounting bracket 18, Steered.

The weight of the outboard motor body and the propeller 12
Thrust of upper mount 29, lower mount 4
1, transmitted from the upper casing 3 to the mounting bracket 18 by the front main mount 53 and the front submount 54. By the way, in the lower mount 41, normally, the force is transmitted at the portions fitted in the concave portions 40 and 45. However, when the lower end portion of the outboard motor collides with a protrusion on the seabed, such as a rock, a large backward force is applied to the upper casing 3. In such a case, a large force is transmitted from the overhang portion 47 of the upper casing 3 to the mounting bracket 18 via the front end portion 41b of the lower mount 41 and the like. The lower part of the machine rises and springs up.

When a splash is applied to the lower portion of the pivot shaft 25 of the outboard motor or to the lower mount housing 31, a throttle wall 25a as a first blocking member is formed in the space inside the pivot shaft 25. Therefore, the rise of the splash is prevented by the diaphragm wall 25a. Also in the lower mount housing 31, the gap between the projecting portion 47 of the upper casing 3 as the outboard motor main body and the lower mount housing 31 is closed by the front submount 54 as the second blocking member. Therefore, the rise of the splash can be prevented by the front submount 54.

Next, a second embodiment of the outboard motor according to the present invention will be described.
The embodiment will be described with reference to FIG. In the description of the second embodiment, the same reference numerals are given to components corresponding to the components of the first embodiment, and a detailed description thereof will be omitted.

Upper and lower diaphragm walls 25 inside the pivot shaft 25
A bush 56 made of an elastic body such as rubber or foamed resin such as urethane foam is fitted between a. The shift rod 27 penetrates this bush 56 so as to be vertically movable. Therefore, the splash that has risen inside the pivot shaft 25 is reliably prevented by the bush 56 that is the first blocking member.

Next, a third embodiment of the outboard motor according to the present invention will be described.
1 will be described with reference to FIG. 1 and FIG. FIG.
FIG. 7 is an explanatory view of a pivot shaft support pipe and a pivot shaft in a state where a lower mount housing is mounted in the outboard motor according to the third embodiment, (a) is a cross-sectional view in a neutral state, and (b) is a sectional view. It is sectional drawing in an advancing state. In the description of the third embodiment, the same reference numerals are given to components corresponding to the components of the first embodiment, and a detailed description thereof will be omitted.

As described above, the shift rod 27 moves up and down, and switches the transmission mechanism for transmitting the rotational force of the drive shaft 10 to the propeller shaft 14 to neutral, forward, reverse, etc., as shown in FIG. Neutral shift position shown,
The forward shift position illustrated in FIG. 4B displaced above the neutral shift position, and the reverse shift position displaced below the neutral shift position. Near the upper end of the lower shift rod 27b of the shift rod 27, a closing member 61 made of an elastic body such as rubber or foamed resin such as urethane foam is attached. When the shift rod 27 is in the forward shift position, the closing member 61
Covers the opening at the lower end of the pivot shaft 25 and is closed.
Therefore, the splash occurs when the ship is moving forward, in which case the closing member 61 is moved to the pivot shaft 2.
5 covers the opening at the lower end, and prevents splash from entering the inside of the pivot shaft 25.

The embodiment of the present invention has been described above in detail.
The present invention is not limited to the above embodiment,
Within the gist of the present invention described in the claims,
Various changes can be made. Modification examples of the present invention are exemplified below. (1) In the embodiment, the front submount 5
4 is formed integrally with the front main mount 53, but may be formed separately.

(2) In the embodiment, the lower mount mounting portions are the concave portions 40 and 45, but if the lower mount 41 can be mounted, the structure can be appropriately changed. (3) If the closing member 61 can prevent the splash from rising to the cowling, it is not necessary to completely close the opening at the lower end of the pivot shaft 25, and an appropriate gap can be formed. It is.

(4) In the embodiment, the lower mount housing 31 has two housing parts 32, 3
Although it is composed of three, it is not always necessary to configure it with two housing parts. For example, it can be composed of one member or composed of three or more housing parts.

[0033]

According to the present invention, since the blocking member for blocking the rise of the splash is disposed inside the pivot shaft, the conventional splash blocking plate can be mounted without being provided below the lower mount housing. Splashes can be prevented from reaching the cowling. Therefore, the splash prevention plate which is annoying is not provided, and the appearance is improved. Further, although the upper shift rod and the lower shift rod are connected immediately below the lower mount housing, the connection work is facilitated.

Further, in the case where a second blocking member for blocking the rise of the splash is disposed in a gap between the lower mount housing and the outboard motor main body separately from the blocking member, the conventional splash blocking is provided. Even if the plate is not attached below the lower mount housing, it is possible to prevent the splash from rising from the gap between the lower mount housing and the outboard motor main body. Therefore, it is possible to more effectively prevent the splash from reaching the cowling.

In the case where a throttle is formed inside the pivot shaft, the splash can be prevented from rising inside the pivot shaft by the throttle without providing a splash blocking plate. .

Further, a bush may be fitted inside the pivot shaft. In this case as well, it is possible to prevent the splash from rising inside the pivot shaft by the bush without providing the splash blocking plate.

When the shift rod is in the forward shift position, a closing member provided on the shift rod
The lower end of the opening of the pivot shaft may be closed. In this case as well, it is possible to prevent the splash from rising inside the pivot shaft with the closing member without providing the splash blocking plate.

In some cases, a front sub-mount is provided between the front surface of the projecting portion located in front of the lower mount and the lower mount housing. In this case, the gap between the front of the overhang and the lower mount housing is filled with the front submount. It is possible to prevent the gap between the housing and the housing from rising.

[Brief description of the drawings]

FIG. 1 is a side view of an outboard motor according to the present invention.

FIGS. 2A and 2B are explanatory views of a pivot shaft support pipe and a pivot shaft in a state where a lower mount housing is mounted, and FIG. 2A is a cross-sectional view of the first embodiment;
(B) is sectional drawing of 2nd Embodiment.

3A and 3B are explanatory views of the vicinity of a portion where a lower mount is attached, wherein FIG. 3A is a plan sectional view and FIG. 3B is a bb sectional view of FIG.

FIG. 4 is an explanatory view of a pivot shaft support pipe and a pivot shaft in a state where a lower mount housing is mounted in an outboard motor according to a third embodiment;
(A) is a sectional view in a neutral state, and (b) is a sectional view in a forward state.

FIG. 5 is a side view of a conventional outboard motor mounted on a ship.

FIG. 6 is a plan sectional view showing a vicinity of a portion to which a conventional lower mount is attached.

FIG. 7 is an explanatory view of an outboard motor to which a splash prevention plate is attached, (a) being a side view of a main part of the outboard motor,
(B) is a bb sectional view of (a).

[Explanation of symbols]

 18 Mounting Bracket 25 Pivot Shaft 25a Aperture Wall (First Blocking Member) 27 Shift Rod 29 Upper Mount 31 Lower Mount Housing 40 Recess (Lower Mount Attachment) 41 Lower Mount 47 Overhang 53 Front Main Mount 54 Front Sub-Mount (No. 2 blocking member) 56 bush (first blocking member) 61 closing member

Claims (6)

[Claims] 1. An outboard motor in which an outboard motor body is mounted on a ship with a mounting bracket, wherein the mounting bracket has a rotatable hollow pivot shaft, and the pivot shaft has Attached to the outboard motor body via an upper mount, a lower mount housing is fixed to a lower portion, and the lower mount housing is attached to the outboard motor body via a lower mount, and An outboard motor, wherein a blocking member for preventing a rise of splash is disposed inside the pivot shaft. 2. An outboard motor in which the outboard motor body is mounted on a ship with a mounting bracket, wherein the mounting bracket has a rotatable hollow pivot shaft, and the pivot shaft has an upper part, Attached to the outboard motor body via an upper mount, a lower mount housing is fixed to a lower portion, and the lower mount housing is attached to the outboard motor body via a lower mount, and A first blocking member for preventing the splash from rising is disposed inside the pivot shaft, and a second blocking member for preventing the splash from rising is provided in a gap between the lower mount housing and the outboard motor main body. An outboard motor characterized by being arranged. 3. An outboard motor in which an outboard motor body is mounted on a ship with a mounting bracket, wherein the mounting bracket includes a rotatable hollow pivot shaft, and the pivot shaft includes an upper mount and An outboard motor which is attached to an outboard motor body via a lower mount, and wherein a throttle is formed inside a pivot shaft. 4. An outboard motor in which an outboard motor body is mounted on a ship with a mounting bracket, wherein the mounting bracket includes a rotatable hollow pivot shaft, and the pivot shaft includes an upper mount and An outboard motor which is attached to an outboard motor main body via a lower mount, and wherein a bush is fitted inside the pivot shaft. 5. An outboard motor in which the outboard motor main body is mounted on a ship with a mounting bracket, wherein the mounting bracket has a rotatable hollow pivot shaft, and the pivot shaft includes an upper mount and an upper mount. A shift rod that is attached to the outboard motor body via a lower mount and that moves to the upper forward shift position when moving forward and to the lower reverse shift position when moving backward is mounted inside the pivot shaft so as to be movable vertically. An outboard motor, wherein the shift rod is provided with a closing member, and the closing member closes a lower end of the opening of the pivot shaft when the shift rod is in the forward shift position. 6. An outboard motor mounted on a marine vessel via an upper mount and a lower mount on an outboard motor main body via an upper mount and a lower mount, wherein both sides of a front portion of the outboard motor main body are provided. Each of the surfaces is formed with a lower mount mounting portion to which the block type lower mount is mounted, and a projecting portion projecting forward of the lower mount is formed on the front side of the lower mount mounting portion. The mounting bracket has a pivot shaft that is rotatable. A front portion of a lower mount housing is fixed to a lower end portion of the pivot shaft. A rear portion of the lower mount housing branches right and left, The lower mounts are engaged so as to cover the outer sides of the respective lower mounts. A front main mount is disposed near the base of the branch of the wing, and the rear surface of the front main mount faces the tip of the outboard motor body. An outboard motor, wherein a front submount is provided between the housing and the housing.