JPS601099A - Sealing device for marine engine crossing hull board - Google Patents

Abstract

PURPOSE:To facilitate assembly of the captioned marine engine and simplify the shape of a sealing flange by supporting a pair of sealing ends arranged between the outside of a propulsion device and the hull side using each one sealing groove provided on the outside surface of the propulsion device and the hull side. CONSTITUTION:The mounting plate 35 of a sealing flange 34 is fixed on the top 23a of an engine installation stand 23 by using a screw 37. A sealing groove 38 is formed between the retainer piece 36 of the sealing flange 34 and the top 23a. In addition, a recess 40 is formed at the lower end of the upper case 25 of a propulsion device and a sealing groove 41 is formed between this recess 40 and the top 26a of the intermediate case 26 of the propulsion device. On the other hand, the engagement ring section 51 of an inside seal 49 is inserted in the recessed groove 52 of an outside seal 46 and both seals 46 and 49 are integrated. As a result, both seals 46 and 49 are supported by separately fitting the engagement ring sections 48 and 51 of the integrated seals in the sealing grooves 38 and 41.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a sealing device for a saildrive type inboard/outboard motor.

In this type of sail drive type inboard/outboard motor, the propulsion device and the engine are integrally connected to each other, and the propulsion device is installed on the engine installation stand inside the boat for vibration isolation via vibration isolating rubber.
The propulsion device protrudes outside the ship through an opening formed in the hull. In this case, the gap around the propulsion device in the opening requires a seal to prevent seawater from entering from outside the ship. Conventionally, seals in this area are double-arranged, inside and outside, and are almost completely sealed. A seal structure is obtained.

Fig. 1 shows the conventional seal structure of this type of inboard/outboard motor.
The horizontal outer end of the diaphragm-shaped outer seal (4) is fastened between the groove (3) formed in the engine mounting base (1), and the horizontal inner end of the outer seal (4) is also fastened. Department,
The drive case (5) is fastened by the groove (7) at the lower end of the upper case (6) and the upper end surface of the lower case (8), and the horizontal inner end of the seal flange (2) is connected to the outer seal ( 4) Extends inwardly above (
2a), and an inverted U-shaped inner seal (9) is provided between the groove (10) at the tip of the seal flange (2) and the outer surface of the upper case (6). That is, in this conventional example, a diaphragm-shaped outer seal (4) and an inverted U-shaped inner seal (9) perform double sealing on the inside and outside, but the outer seal (4) and the inner seal (
9) and 4.1 are respectively installed in different positions,
Therefore, not only is the installation complicated and the assembly is troublesome, but also the sealing grooves (3) and (10) must be formed at two locations on the sealing flange (2). ) has the disadvantage of a complicated shape and high cost.

The present invention solves the drawbacks of the conventional structure and realizes a seal structure that is easy to assemble and can be manufactured at low cost by making the shape of the seal flange simple. According to the present invention, a propulsion device connected to an engine is installed in a ship hull in a vibration-proof manner, the lower end of the propulsion device projects out of the ship through an opening in the hull, and a pair of propulsion devices are provided between the outer surface of the propulsion device and the hull side. In the case where the above-mentioned opening is double-closed on the inside and outside by providing a seal, one seal groove is provided on the outer surface of the propulsion device and the other on the hull side, and the end portions of the two seals on the propulsion device side and the hull side are closed. It is characterized by its support.

Hereinafter, the structure of the present invention will be explained based on an illustrated embodiment. In FIG. An engine mounting stand (23) is fixed to the inside of the hull (21) so as to surround the part (22). , middle case (26) and lower case (27)
); a vertical drive shaft (29) disposed within the drive case (28); a propeller shirt (29) to which the power from the drive shirt (29) is transmitted; 30), a power transmission mechanism such as a propeller (31), and other auxiliary mechanisms, and the upper part of this propulsion device (24),
That is, the engine (32) is mounted on the upper part of the upper case (25). Although not shown, such a combination of the propulsion device (24) and the engine (32) is installed on the engine mounting base (23) in a vibration-proof manner via a vibration-proofing material such as rubber, This causes vibrations of the engine (32) to be transmitted to the hull (21).
) to prevent it from being transmitted to the other side. The combination of the engine (32) and the propulsion device (24) installed on the hull (1) side, that is, on the engine mounting stand (23) in this way, is such that the engine (32) is placed inside the ship and the propulsion device (2
4), the lower half of which protrudes outward from the opening (22).

Therefore, to explain the structure of installing the seal that covers the gap between the propulsion device (24) and the opening (22), as shown in Fig. 2, the upper case (25) is attached to the middle case (
The upper surface of the intermediate case (26) (26) is tightened by the bolt (33), but as shown in FIG. 3, the upper surface (26a) of the intermediate case (26)
It is located approximately on the same plane as a).

(34) is a metal plate (35) for horizontal mounting, and a downward U-shaped holding piece (36) connected from the horizontal inner end of the plate (35). This seal flange (3
4), its installation is done using the plate (35) and the installation base (2).
3) is fixed to the top surface with a screw (37), and at that time,
The holding piece (36) and the top surface (23a) of the installation base (23)
) A seal groove (38) is formed between the two. On the other hand, on the propulsion device (24) side, a recess (40) is formed at the lower end of the upper case (25) by projecting a downward lip (39) from the outer wall surface of the upper case (25). The recess (40) and the upper surface (26) of the intermediate case (26)
a), the seal groove (
A seal groove (41) is formed that is substantially symmetrical to 38).

(46) is an outer seal consisting of a seal body (47) having a V-shaped cross section, and thick fitting ring portions (48), (48) connected to both peripheral edges of the seal body (47). It shows. On the other hand, (49) is the outer seal (46)
A seal body (50) that is thinner than the seal body (47) and has an inverted dish shape in cross section, and a slightly thick fitting ring part (51) connected to both the inner and outer open edges of the seal body (50). )
The figure shows an inner seal consisting of (51,), and this inner seal (49) has fitting ring portions (
51) (51) is fitted into a groove (52) (52) formed on the opposing surface of the fitting ring portion (48) (4B) in the outer seal (46).

The outer seal (46) is thus integrated into one another.
and the inner seal (49) refer to its outer peripheral side, that is, the hull flJ
The side fitting ring parts (48) (51) are fitted into the grooves (38) formed between the seal flange (34) and the upper surface of the pedestal (23), and the inner peripheral side, that is, the propulsion device ( 24
) The fitting ring part (4B) (51) on the outer surface side is also connected to the lower end of the upper case (25) and the middle case (26).
The screw (37) is fitted into the seal groove (41) formed between the upper surface and the seal flange (34) is attached.
), and the upper case (25) is connected to the middle case (26).
) are fastened and held within these seal grooves (38) and (41) by tightening bolts (33) attached to them. At this time, the tip (53) of the presser piece (36) on the seal flange (34) holds the fitting ring portion (4B) (51) on the outer circumferential side, and its tip surface touches the inner seal ( 49) between the main body part (5o) and the fitting ring part (51) on the upper surface of the installation stand (23) (
23a) side. On the other hand, each seal (46
) The fitting ring part on the inner circumferential side of (49). (48) (
51), the lip (39) protruding from the outer wall surface of the upper case (25) is connected to these fitting ring parts (
48) Embrace (51) and insert the inner seal (4).
9) Fitting ring part (51) and main body part (50)
The continuous pitching part is pressed against the upper surface (26a) of the intermediate case (26).

In FIGS. 2 and 3, (54) indicates that the attachment formed in the inner seal (49) is inserted into the hole (55) from the inside of the ship, and its tip faces toward the inner side of the outer seal (46). If the outer seal (46) is damaged and seawater intrudes into the outer seal (46), this sensor (54) will detect the intrusion and open the inner seal (49). They are also breached to warn of seawater entering the ship. Conventionally, such a detection sensor (
54) is a propulsion device (24) of the seal flange (27)
The seal flange (2a in Figure 1) was attached to the side extension.
34) had to be extended to the inner circumferential side, and the structure of the seal flange (34) was complicated, resulting in high cost. By attaching it to the seal (49), this drawback is solved.

As described above, according to the present invention, a pair of seals that double seal the gap between the propulsion device and the hull side at the hull opening, both inside and outside, are formed by one seal groove provided on the outer surface of the propulsion device and one on the hull side. Since the seals are supported by the flange, there is no need to install each seal separately as in the past, and they can be assembled at the same time, making assembly easier. In addition, the seal flange, which is normally installed on the hull side, has two seal grooves. Only one seal flange is required, and there is no need to extend the seal flange toward the inner periphery (the shape is simple and agricultural production is possible at low cost).

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main parts of a conventional seal installation structure, FIG. 2 is a vertical cross-sectional view of the main parts of an inboard/outboard motor showing an embodiment of the present invention, and FIG. It is an enlarged view of the part. (21) -hull, (22)・-opening, (24)・−
Propulsion device, (32) one engine, (38) (41) - seal groove, (46) - outer seal, (49) - inner seal, (54) - seawater detection sensor. Patent Applicant: Yanmar Diesel Co., Ltd. Representative Patent Attorney Hisashi Tarumoto

Claims (1)

[Claims] ■ A propulsion device connected to six engines is installed on the hull in a vibration-proof manner,
a lower end of the propulsion device protrudes outboard from an opening in the hull;
A pair of seals are provided between the outer surface of the propulsion device and the hull side to close the opening portion both inside and outside, and one seal groove provided on each of the outer surface of the propulsion device and the hull side A sealing device for an inboard/outboard engine, characterized in that the propulsion device side and hull side ends of both seals are supported. 2. A sealing device for an outboard/outboard motor according to claim 1, wherein a sensor for detecting seawater intrusion from the seal portion is attached to the seal on the inside of the boat.