Seal material for outboard engine

Abstract

To maintain high sealability by not having a lip turned up when sealing by providing the lip in a periphery unit of an opening unit formed in an inclined portion.SOLUTION: Sealing material for outboard engine 10 includes a top side attachment plate 11a, a left side attachment plate 12a, a bottom side attachment plate 13a, and a right side attachment plate 14a to be attached to an attachment surface provided in periphery of a shroud side opening 143. The top side attachment plate 11a is provided with a supporting wall 11e projecting toward an upper edge 114a of a cowl side opening 114, and a top side seal lip 11d extended from a top end of the supporting wall 11e until coming into contact with a top side attachment surface 142a of the shroud side opening 143. A left side seal lip 12d is provided in a left side attachment plate 12a. A bottom side seal lip 13d is provided on a bottom side attachment plate 13a. A right side attachment plate 14a is provided with a right side seal lip 14d.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present disclosure relates to a sealing material attached to an outboard motor.

Background Art

[0002] For example, an outboard motor attached to a hull has an engine as a power source built therein. Exhaust ports for discharging the heat of the engine, intake ports for sucking in the intake air of the engine, etc. are formed in the cover of the outboard motor. As this type of outboard motor, for example, as disclosed in Patent Document 1, a sealing material is interposed between a passage forming portion formed in a ceiling wall that is a part of the engine cover and an inlet duct integrally formed with an upper case that constitutes an intake silencer, and a structure is provided in which the passage forming portion and the inlet duct are sealed by the sealing material.

[0003] This sealing material is composed of an elastic material having rubber-like elasticity, and is composed of a fixing portion fixed to the peripheral edge portion of the inlet duct and a lip that closely contacts the peripheral edge portion of the passage forming portion. The fixing portion has a plate shape that extends annularly along the peripheral edge portion of the inlet duct. The lip protrudes upward from the surface of the fixing portion on the passage forming portion side and extends annularly in the same manner as the fixing portion, and is curved so as to be located radially outward as it goes upward.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the case of an outboard motor, the engine cover is configured to be detachable from the outboard motor body in order to perform maintenance on the engine and the like. In the case of Patent Document 1, when detaching the engine cover, it is configured to move vertically with respect to the outboard motor body. That is, when attaching the engine cover to the outboard motor body, after placing the engine cover above the outboard motor body, it is moved downward, and the engine cover presses the lip from above. At this time, the lip of the sealing material protrudes upward and is in a corresponding relationship with the moving direction of the engine cover. Therefore, it is considered that the lip can be naturally pressed from above and no curling of the lip occurs.

[0006] However, in recent years, due to the structure, design, etc. of outboard motors, there has been a desire to form an opening for exhaust heat and intake on an inclined surface. In such a case, the sealing material fixed to the peripheral edge of the opening is also arranged inclined, and the protruding direction of the lip also faces in an inclined direction. When the engine cover is moved downward when attaching it with the protruding direction of the lip also facing in an inclined direction, the protruding direction of the lip and the moving direction of the engine cover are not in a corresponding relationship. Therefore, the back surface of the engine cover presses the lip obliquely downward. At this time, since the lip is made of an elastic material having rubber-like elasticity, the frictional force generated between the back surface of the engine cover and the lip is large. Therefore, there is a risk that the lip will be deformed so as to curl. There is a problem that the sealing performance is not exhibited at the curled portion of the lip.

[0007] The present disclosure is made in view of such a point, and an object thereof is to maintain high sealing performance without curling the lip when providing a lip at the peripheral edge of an opening formed in an inclined portion for sealing.

Means for Solving the Problem

[0008] In order to achieve the above object, in a first aspect of the present disclosure, there is provided an outboard motor including a shroud that covers an engine driving a propeller and a cowl that covers the shroud from above, and an outboard motor sealing material that seals between a shroud-side opening formed on an upper side of the shroud and a cowl-side opening formed in a portion of the cowl corresponding to the shroud-side opening can be assumed.

[0009] The shroud-side opening is formed in an inclined portion of the shroud, and the outboard motor sealing material has an upper side portion extending along an upper edge of the shroud-side opening, a left side portion extending along a left edge of the shroud-side opening, a lower side portion extending along a lower edge of the shroud-side opening, and a right side portion extending along a right edge of the shroud-side opening, forming a rectangular ring shape.

[0010] The upper side portion, the left side portion, the lower side portion, and the right side portion respectively have an upper side mounting plate, a left side mounting plate, a lower side mounting plate, and a right side mounting plate that are attached to an upper side mounting surface of the shroud-side opening, a left side mounting surface of the shroud-side opening, a lower side mounting surface of the shroud-side opening, and a right side mounting surface of the shroud-side opening.

[0011] The upper side mounting plate is provided with a support wall that protrudes toward and extends to contact an upper edge of the cowl-side opening, and an upper side seal lip that extends from a tip of the support wall to contact the upper side mounting surface provided in the shroud-side opening.

[0012] The left side mounting plate is provided with a left side seal lip that protrudes toward and extends to contact a left edge of the cowl-side opening. The lower side mounting plate is provided with a lower side seal lip that protrudes toward and extends to contact a lower edge of the cowl-side opening. The right side mounting plate is provided with a right side seal lip that protrudes toward and extends to contact a right edge of the cowl-side opening.

[0013] According to this configuration, when the upper mounting plate, left mounting plate, lower mounting plate, and right mounting plate of the outboard engine seal material are respectively attached to the upper mounting surface, left mounting surface, lower mounting surface, and right mounting surface of the shroud side opening, since the shroud side opening is formed in an inclined portion, the upper seal lip, left seal lip, lower seal lip, and right seal lip are arranged so as to be in an inclined posture respectively.

[0014] In this state, when mounting the cowl, after positioning the cowl above the shroud, it is moved, for example, in the direction of arrow C shown in FIG. 12. At this time, since the upper seal lip, left seal lip, lower seal lip, and right seal lip are respectively in an inclined posture, the moving direction of the cowl is different from the extending direction of the upper seal lip, left seal lip, lower seal lip, and right seal lip.

[0015] Since the left seal lip and the right seal lip respectively project leftward and rightward, even if the cowl moving in the direction of arrow C comes into sliding contact, they will bend and deform leftward and rightward and will not turn up.

[0016] Also, since the lower seal lip projects forward, this lower seal lip will also bend and deform forward and will not turn up even if the cowl moving in the direction of arrow C comes into sliding contact.

[0017] On the other hand, regarding the upper seal lip, since its upper end is supported by the support wall, when the cowl moving in the direction of arrow C comes into sliding contact, although it will bend and deform forward, the upper seal lip will not turn up either.

[0018] Therefore, only the upper seal lip can be bent and deformed in the direction approaching the center of the outboard engine seal material, while the remaining left seal lip, lower seal lip, and right seal lip can be bent and deformed in the direction away from the center of the outboard engine seal material, and while preventing the occurrence of turning up, all of them can be elastically contacted exactly at the periphery of the cowl side opening.

[0019] In a second aspect of the present disclosure, a locking portion may be provided at an upper edge of the upper side mounting plate, which protrudes downward and locks to a vertical surface formed at an upper edge of the upper mounting surface provided in the shroud side opening.

[0020] According to this configuration, since the upper edge of the upper side mounting plate can be locked to the upper edge of the upper mounting surface provided in the shroud side opening, (more specifically, since the L-shaped portion formed by the upper side mounting plate and the locking portion can be locked to the L-shaped portion formed by the upper mounting surface and the vertical surface,) when the cowl is mounted, forward displacement of the support wall and the upper side seal lip can be suppressed.

[0021] In a third aspect of the present disclosure, the upper side seal lip may be formed so as to be substantially perpendicular to the upper mounting surface provided in the shroud side opening. In this case, a step may be provided on the upper mounting surface for the lower end on the upper mounting surface side of the upper side seal lip to lock to.

[0022] According to this configuration, by locking the lower end of the upper side seal lip to the step, forward displacement of the lower end of the upper side seal lip when the cowl is mounted can be suppressed. Further, although the upper side seal lip is formed so as to be substantially perpendicular to the upper mounting surface provided in the shroud side opening, in a substantially triangular pseudo-hollow formed by the upper side seal lip, the support wall, and the upper side mounting plate (extended portion), since the angle formed by the upper side seal lip and the support wall is an acute angle, the substantially triangular pseudo-hollow has a shape with the tip biased toward the front side. Therefore, when the cowl tilt plate moving in the direction of arrow C comes into sliding contact, it can be more easily bent and deformed toward the front side (the front side in the upper side portion is, in other words, the direction approaching the center of the outboard engine sealing material).

[0023] The upper side mounting plate, the left side mounting plate, the lower side mounting plate, and the right side mounting plate according to a fourth aspect of the present disclosure can be positioned on the same plane formed by the upper mounting surface, the left mounting surface, the lower mounting surface, and the right mounting surface provided in the shroud side opening.

[0024] According to this configuration, the upper mounting surface, left mounting surface, lower mounting surface, and right mounting surface provided at the shroud-side opening can be brought into close contact with the upper side mounting plate, left side mounting plate, lower side mounting plate, and right side mounting plate of the sealing material without any gaps, so that the sealing performance can be further enhanced.

[0025] The upper end of the upper side seal lip, the upper end of the left side seal lip, the front end of the lower side seal lip, and the upper end of the right side seal lip according to the fifth aspect of the present disclosure can be positioned on the same plane formed by the cowl-side opening.

[0026] According to this configuration, the upper side seal lip, left side seal lip, lower side seal lip, and right side seal lip can be brought into close contact with the cowl-side opening without any gaps, so that the sealing performance can be further enhanced.

[0027] In the sixth aspect of the present disclosure, a upper left corner portion can be provided between the upper side portion and the left side portion, a upper right corner portion can be provided between the upper side portion and the right side portion, a lower left corner portion can be provided between the lower side portion and the left side portion, and a lower right corner portion can be provided between the lower side portion and the right side portion.

[0028] In this case, the upper side portion, the upper left corner portion, the left side portion, the lower left corner portion, the lower side portion, the lower right corner portion, the right side portion, and the upper right corner portion can be formed so as to be continuously rectangular annular in order.

[0029] In a seventh aspect of the present disclosure, an upper left seal lip is provided between the upper side seal lip and the left side seal lip, an upper right seal lip is provided between the upper side seal lip and the right side seal lip, a lower left seal lip is provided between the lower side seal lip and the left side seal lip, and a lower right seal lip is provided between the lower side seal lip and the right side seal lip. The upper left seal lip, the upper right seal lip, the lower left seal lip, and the lower right seal lip each extend toward the cowl side opening until they project and contact, and the upper left seal lip, the upper right seal lip, the lower left seal lip, and the lower right seal lip each have the side closer to the center of the outboard motor seal material of the upper left mounting plate at the upper left corner portion, the upper right mounting plate at the upper right corner portion, the lower left mounting plate at the lower left corner portion, and the lower right mounting plate at the lower right corner portion as the base end side, and are shaped such that as they go toward the tip end side, they are positioned on the side away from the center of the outboard motor seal material. Further, the upper left seal lip, the upper right seal lip, the lower left seal lip, and the lower right seal lip can each be connected as an R shape that is substantially concentric with the chamfered R shape of the base end side at the tip end side.

[0030] According to this configuration, when the cowl side inclined plate moving in the direction of arrow C makes sliding contact, the upper left seal lip is bent and deformed such that the upper side seal lip side bends backward, and as it goes toward the left side seal lip side, the bending direction changes so as to gradually bend toward the left, but in any part, it bends and deforms in the direction away from the center of the outboard motor seal material.

[0031] When the cowl side inclined plate moving in the direction of arrow C makes sliding contact, the upper right seal lip is bent and deformed such that the upper side seal lip side bends backward, and as it goes toward the right side seal lip side, the bending direction changes so as to gradually bend toward the right, but in any part, it bends and deforms in the direction away from the center of the outboard motor seal material.

[0032] When the cowl side inclined plate moving in the direction of arrow C makes sliding contact, the lower left seal lip deflects and deforms with the lower side seal lip side facing forward, and as it goes toward the left side seal lip side, the deflection direction changes so that it gradually deflects and deforms toward the left, but at any part, it deflects and deforms in a direction away from the center of the outboard engine seal material.

[0033] When the cowl side inclined plate moving in the direction of arrow C makes sliding contact, the lower right seal lip deflects and deforms with the lower side seal lip side facing forward, and as it goes toward the right side seal lip side, the deflection direction changes so that it gradually deflects and deforms toward the right, but at any part, it deflects and deforms in a direction away from the center of the outboard engine seal material.

[0034] Also, as described above, the left side seal lip, the lower side seal lip, and the right side seal lip deflect and deform in a direction away from the center of the outboard engine seal material respectively. That is, only the upper side seal lip deflects and deforms in a direction approaching the center of the outboard engine seal material, and the other upper left seal lip, left side seal lip, lower left seal lip, lower side seal lip, lower right seal lip, right side seal lip, and upper right seal lip deflect and deform in a direction away from the center of the outboard engine seal material respectively.

[0035] In the eighth aspect of the present disclosure, a substantially triangular upper left lid portion having three sides formed by the left end of the support wall, the rear end of the upper left seal lip, and the right end of the upper left mounting plate is provided, and a substantially triangular upper right lid portion having three sides formed by the right end of the support wall, the rear end of the upper right seal lip, and the left end of the upper right mounting plate is provided, and a core hole can be provided without connecting the upper mounting plate and the lower end of the upper side seal lip.

[0036] According to this configuration, a substantially triangular portion having three sides formed by the left end of the support wall, the rear end of the upper left seal lip, and the right end of the upper left mounting plate can be closed by the upper left lid portion, and a substantially triangular portion having three sides formed by the right end of the support wall, the rear end of the upper right seal lip, and the left end of the upper right mounting plate can be closed by the upper right lid portion. Therefore, the rigidity of the seal material is improved, the sealing performance is improved, and the appearance of the seal material is also improved.

[0037] Further, according to this configuration, since a core extraction hole is provided without connecting the upper mounting plate and the lower end of the upper seal lip, after molding the upper seal lip and the support wall, the core (not shown) of this portion (pseudo-hollow portion) can be easily taken out.

[0038] In the ninth aspect of the present disclosure, the boundary line between the left end of the support wall and the upper left lid portion is positioned more to the left as it goes to the rear side, the boundary line between the upper left lid portion and the upper left mounting plate is positioned more to the left as it goes to the front side, the boundary line between the right end of the support wall and the upper right lid portion is positioned more to the right as it goes to the rear side, and the boundary line between the upper right lid portion and the upper right mounting plate is positioned more to the right as it goes to the front side.

[0039] According to this configuration, a core extraction hole is provided without connecting the upper mounting plate and the lower end of the upper seal lip, and the left end portion of this portion (pseudo-hollow portion) has a shape in which the upper left lid portion spreads toward the left as it goes toward the upper left mounting plate side, and the right end portion of this portion (pseudo-hollow portion) has a shape in which the upper right lid portion spreads toward the right as it goes toward the upper right mounting plate side. That is, after molding the upper seal lip and the support wall, the core (not shown) of this portion (pseudo-hollow portion) can be taken out more easily.

[0040] Further, according to this configuration, the boundary line between the upper left lid portion and the upper left seal lip is positioned obliquely to the right as it goes upward, and the boundary line between the upper right lid portion and the upper right seal lip is positioned obliquely to the left as it goes upward. Therefore, due to the boundary line between the upper left lid portion and the upper left seal lip, the upper left seal lip is bent and deformed in a direction away from the center of the outboard motor seal material until it reaches the upper side of the upper left seal lip.

[0041] Further, due to the boundary line between the upper right lid portion and the upper right seal lip, the upper right seal lip is bent and deformed in a direction away from the center of the outboard motor seal material until it reaches the upper side of the upper right seal lip.

[0042] On the one hand, as described above, the upper seal lip bends and deforms in a direction approaching the center of the sealing material for an outboard motor. That is, since there are boundary lines on both the left and right sides, the bending and deformation direction of the seal lip can be clearly and easily changed with the boundary line as the boundary, making it difficult for abnormal bending and deformation to occur, and making it difficult for the seal lip to curl or tear.

[0043] At least the left mounting plate and the right mounting plate according to the tenth aspect of the present disclosure may each be formed with an insertion hole through which a fastening member for fastening to the shroud is inserted.

[0044] According to this configuration, at least the left mounting plate portion and the right mounting plate portion can be fastened to the shroud respectively, so that the sealing material is firmly fixed and displacement is less likely to occur, and a gap is less likely to form between the shroud and the sealing material.

Effect of the Invention

[0045] As described above, according to this aspect, a sealing material is provided at the periphery of the shroud-side opening formed in the inclined portion of the shroud, and when the cowl is moved from above and attached to the shroud, each seal lip of the sealing material can be prevented from curling, so that high sealing performance can be maintained, and the sealing material is less likely to bend abnormally and the seal lip is less likely to break.

Brief Description of the Drawings

[0046]

Figure 1

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Mode for Carrying Out the Invention

[0047] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiments is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses.

[0048] Fig. 1 is a side view showing the rear part of a boat 200 to which an outboard motor 100 equipped with a sealing material for an outboard motor according to an embodiment of the present invention is attached. An engine 101 is housed in the upper part of the outboard motor 100. On the other hand, a propeller 103 that generates propulsion force is rotatably supported by a rotating shaft 104 in the lower part of the outboard motor 100. The power output from the engine 101 is transmitted to the rotating shaft 104 via a shaft 105 that extends downward inside the outboard motor 100. Thereby, the propeller 103 is driven by the engine 101.

[0049] Also, in the upper part of the outboard motor 100, a cowl 110 (described later) that houses the engine 101 When it does so, a cover 120 (described later) is provided on the upper part of the cowl 110.

[0050] Since the configuration of the outboard motor 100 is well-known in the art, detailed description thereof will be omitted. In the description of this embodiment, the front side of the boat 200 is simply referred to as the front side, the rear side of the boat 200 is simply referred to as the rear side, the left side of the boat 200 is simply referred to as the left side (the direction toward the front of the paper in FIG. 1), and the right side of the boat 200 is simply referred to as the right side (the direction toward the back of the paper in FIG. 1). Furthermore, the direction of the cover 120 side of the outboard motor 100 of the boat 200 is simply referred to as the upper side, and the direction of the propeller 103 side of the outboard motor 100 of the boat 200 is simply referred to as the lower side.

[0051] The portion for housing the engine 101 in the outboard motor 100 has an engine room R. This engine room R is covered from above by the cowl 110. As shown also in FIG. 2, a cover 120 for covering the cowl 110 from above is detachably attached to the upper part of the cowl 110.

[0052] As shown in FIG. 3, the cowl 110 includes a cowl main body 111. The cowl main body 111 includes a peripheral wall 111a and an upper wall 111b provided on the upper part of the peripheral wall 111a. The front side portion of the upper wall 111b is an inclined wall 111c that slopes downward forward so as to be positioned lower as it approaches the front end. On the other hand, the rear side portion of the upper wall 111b extends in the front-rear direction and the left-right direction.

[0053] A cowl-side opening 114 for discharging the heat of the engine 101 to the outside is formed in a portion that is one step lower on the left side of the inclined wall 111c. This cowl-side opening 114 is set such that the dimension in the vertical direction is longer than the dimension in the horizontal direction, and has a vertically long rectangular shape. The inclined wall 111c slopes downward forward, and the cowl-side opening 114 also slopes downward forward so as to be positioned lower as it approaches the front end.

[0054] As shown in FIG. 4, on the left side of the inclined wall 111c, there is a cowl side inclined plate 113 extending in the front-rear direction and the left-right direction. The cowl side inclined plate 113 is inclined downward toward the front so that it is positioned lower as it approaches the front end. The inclination angle of the cowl side inclined plate 113 is set to be slightly larger than the inclination angle of the inclined wall 111c.

[0055] A cowl side opening 114 is formed in the cowl side inclined plate 113 so as to coincide with a shroud side opening 143, which will be described later with reference to FIG. 6. The shroud side opening 143 and the cowl side opening 114 described later are substantially parallel to each other and communicate with each other. The cowl side opening 114 is set such that the dimension in the vertical direction is longer than the dimension in the left-right direction, and has a vertically long rectangular shape. Since the cowl side inclined plate 113 is inclined downward toward the front, the cowl side opening 114 and the shroud side opening 143 described later also incline downward toward the front so that they are positioned lower as they approach the front end.

[0056] The engine 101 housed in the engine room R of the outboard motor 100 is covered from above by a shroud 140 shown in FIGS. 4 to 6. The shroud 140 is configured to be covered from above by the cowl 110.

[0057] Here, the front side and the rear side of the shroud 140 coincide with the front side and the rear side of the boat 200 described above, and the left side and the right side of the shroud 140 coincide with the left side and the right side of the boat 200 described above. Also, the upper side and the lower side of the shroud 140 coincide with the upper side and the lower side of the boat 200 described above. More specifically, the upper side of the shroud 140 (alone) indicates the shroud side opening 143 side, and the lower side of the shroud 140 (alone) indicates the engine 101 mounting side.

[0058] The shroud 140 is provided with a duct 141 for exhaust heat that extends upward. The duct 141 is open downward, and hot air from the engine 101 can flow in through this open part. A shroud-side inclined plate 142 is formed at the upper part of the duct 141. The shroud-side inclined plate 142 is arranged to be spaced downward from the cowl-side inclined plate 113. The shroud-side inclined plate 142 and the cowl-side inclined plate 113 are arranged to face each other in the vertical direction, and the inclination angles are set to be substantially the same and are substantially parallel to each other.

[0059] The inclined part in the shroud 140 is the above-mentioned shroud-side inclined plate 142, and a shroud-side opening 143 is formed in the shroud-side inclined plate 142. The cowl-side opening 114 is formed in a portion of the cowl 110 corresponding to the shroud-side opening 143 and communicates with the shroud-side opening 143. Therefore, the hot air of the engine 101 flows upward in the duct 141 of the shroud 140, then passes through the shroud-side opening 143, and is discharged from the cowl-side opening 114 to the outside of the cowl 110 (the outside of the outboard motor 100).

[0060] The outboard motor sealing material 10 shown in FIG. 5 is a member that seals the space between the periphery of the shroud-side opening 143 and the periphery of the cowl-side opening 114 so that rainwater or seawater that has entered through the gap between the cover 120 and the cowl 110 does not flood the space R2 between the inner surface of the cowl 110 and the outer surface of the shroud 140. The material constituting the outboard motor sealing material 10 is an elastic material having rubber-like elasticity. When the material constituting the outboard motor sealing material 10 is, for example, a rubber material, EPDM can be applied, and when it is a thermoplastic resin material, TPO (olefin-based thermoplastic elastomer) or the like can be applied. Thereby, the outboard motor sealing material 10 can be easily elastically deformed between the periphery of the shroud-side opening 143 and the periphery of the cowl-side opening 114 and can be adhered to each member.

[0061] As shown in FIG. 6, since the shroud-side opening 143 is rectangular, the periphery of the shroud-side opening 143 has an upper edge 143a, a left portion 143b, a lower edge 143c, and a right edge 143d. The upper edge 143a and the lower edge 143c extend in the left-right direction and are parallel to each other. The left edge 143b and the right edge 143d extend in the up-down direction and are parallel to each other. The lengths of the upper edge 143a and the lower edge 143c are set shorter than the lengths of the left edge 143b and the right edge 143d.

[0062] As shown in FIG. 6, around the shroud-side opening 143 on the upper surface of the shroud-side inclined plate 142, an upper mounting surface 142a, a left mounting surface 142b, a lower mounting surface 142c, and a right mounting surface 142d are provided. The upper mounting surface 142a extends in the left-right direction along the upper edge 143a of the shroud-side opening 143. The left mounting surface 142b extends in the up-down (front-back) direction along the left edge 143b of the shroud-side opening 143. The lower mounting surface 142c extends in the left-right direction along the lower edge 143c of the shroud-side opening 143. The right mounting surface 142d extends in the up-down (front-back) direction along the right edge 143d of the shroud-side opening 143. The upper mounting surface 142a, the left mounting surface 142b, the lower mounting surface 142c, and the right mounting surface 142d form an annular flat surface surrounding the shroud-side opening 143.

[0063] Also, as shown in FIGS. 5 to 11 and the like, the outboard engine sealing material 10 has a rectangular ring shape having an upper side portion 11 extending along the upper edge 143a of the shroud-side opening 143, a left side portion 12 extending along the left edge 143b of the shroud-side opening 143, a lower side portion 13 extending along the lower edge 143c of the shroud-side opening 143, and a right side portion 14 extending along the right edge 143d of the shroud-side opening 143.

[0064] More specifically, as shown in FIG. 7, a top left corner portion 15 is provided between the upper side portion 11 and the left side portion 12 of the outboard engine sealing material 10, a top right corner portion 16 is provided between the upper side portion 11 and the right side portion 14, a bottom left corner portion 17 is provided between the lower side portion 13 and the left side portion 12, and a bottom right corner portion 18 is provided between the lower side portion 13 and the right side portion 14. By the upper side portion 11, the top left corner portion 15, the left side portion 12, the bottom left corner portion 17, the lower side portion 13, the bottom right corner portion 18, the right side portion 14, and the top right corner portion 16 being continuously connected in order, the outboard engine sealing material 10 is formed in a rectangular ring shape.

[0065] The boundary lines L1 and L8 are both extension lines of the left end and the right end of the support wall 11e. Also, the boundary line L2 is the boundary line between the upper end of the left side portion 12 and the lower end of the top left corner portion 15, and the boundary line L3 is the boundary line between the lower end of the left side portion 12 and the upper end of the bottom left corner portion 17. Also, the boundary line L4 is the boundary line between the left end of the lower side portion 13 and the right end of the bottom left corner portion 17, and the boundary line L5 is the boundary line between the right end of the lower side portion 13 and the left end of the bottom right corner portion 18. Also, the boundary line L6 is the boundary line between the lower end of the right side portion 14 and the upper end of the bottom right corner portion 18, and the boundary line L7 is the boundary line between the upper end of the right side portion 14 and the lower end of the top right corner portion 16.

[0066] The upper side portion 11, the top left corner portion 15, the left side portion 12, the bottom left corner portion 17, the lower side portion 13, the bottom right corner portion 18, the right side portion 14, and the top right corner portion 16 are integrally formed. The upper side portion 11, the left side portion 12, the lower side portion 13, and the right side portion 14 each have an upper side mounting plate 11a, a left side mounting plate 12a, a lower side mounting plate 13a, and a right side mounting plate 14a that are attached to an upper side mounting surface 142a, a left side mounting surface 142b, a lower side mounting surface 142c, and a right side mounting surface 142d provided around the shroud side opening 143.

[0067] The upper side mounting plate 11a extends in the left-right direction along the upper mounting surface 142a, and its lower surface is formed to be in close contact with the upper mounting surface 142a. The left side mounting plate 12a extends in the up-down (front-back) direction along the left mounting surface 142b, and its lower surface is formed to be in close contact with the left mounting surface 142b. The lower side mounting plate 13a extends in the left-right direction along the lower mounting surface 142c, and its lower surface is formed to be in close contact with the lower mounting surface 142c. The right side mounting plate 14a extends in the up-down (front-back) direction along the right mounting surface 142d, and its lower surface is formed to be in close contact with the right mounting surface 142d.

[0068] The upper side mounting plate 11a, the left side mounting plate 12a, the lower side mounting plate 13a, and the right side mounting plate 14a are positioned so as to form an annular same plane. Specifically, the lower surfaces of the upper side mounting plate 11a, the left side mounting plate 12a, the lower side mounting plate 13a, and the right side mounting plate 14a are positioned on the annular same plane formed by the upper mounting surface 142a, the left mounting surface 142b, the lower mounting surface 142c, and the right mounting surface 142d provided around the shroud side opening 143 shown in FIG. 6. Thereby, in a state where the outboard engine sealing material 10 is attached to the shroud side inclined plate 142, the upper side mounting plate 11a, the left side mounting plate 12a, the lower side mounting plate 13a, and the right side mounting plate 14a are arranged so as to surround the shroud side opening 143.

[0069] More specifically, as described above, as shown in FIG. 7, the upper side mounting plate 11a, the upper left mounting plate 15a, the left side mounting plate 12a, the lower left mounting plate 17a, the lower side mounting plate 13a, the lower right mounting plate 18a, the right side mounting plate 14a, and the upper right mounting plate 16a are also positioned to form an annular same plane so as to be continuous in order, and are positioned on the annular same plane formed by the upper mounting surface 142a, the left mounting surface 142b, the lower mounting surface 142c, and the right mounting surface 142d provided around the shroud side opening 143 shown in FIG. 6. Thereby, in a state where the outboard engine seal member 10 is attached to the shroud side inclined plate 142, the upper side mounting plate 11a, the upper left mounting plate 15a, the left side mounting plate 12a, the lower left mounting plate 17a, the lower side mounting plate 13a, the lower right mounting plate 18a, the right side mounting plate 14a, and the upper right mounting plate 16a are arranged so as to surround the shroud side opening 143.

[0070] Also, as shown in FIG. 7, the left side mounting plate 12a is formed with a left side insertion hole 12b through which a fastening member B (shown in FIG. 5) for fastening the left side mounting plate 12a to the shroud 140 is inserted. The left side insertion hole 12b penetrates the left side mounting plate 12a in the thickness direction.

[0071] Also, the right side mounting plate 14a is formed with a right side insertion hole 14b through which the fastening member B for fastening the right side mounting plate 14a to the shroud 140 is inserted, in the same manner as on the left side.

[0072] Furthermore, upper left insertion holes 15b, upper right insertion holes 16b, lower left insertion holes 17b, and lower right insertion holes 18b for inserting the fastening member B are also formed in the upper left corner portion 15, the upper right corner portion 16, the lower left corner portion 17, and the lower right corner portion 18, respectively. The fastening member B is, for example, a screw, a clip, or the like.

[0073] As shown in FIG. 6, six screw holes 142e are formed in the shroud side inclined plate 142 so as to correspond to the left insertion hole 12b, the right insertion hole 14b, the upper left insertion hole 15b, the upper right insertion hole 16b, the lower left insertion hole 17b, and the lower right insertion hole 18b of the outboard engine sealing material 10. By inserting the fastening member B through the left insertion hole 12b, the right insertion hole 14b, the upper left insertion hole 15b, the upper right insertion hole 16b, the lower left insertion hole 17b, and the lower right insertion hole 18b of the outboard engine sealing material 10 and then screwing it into the screw hole 142e, the outboard engine sealing material 10 can be fastened and fixed to the shroud side inclined plate 142. Incidentally, the upper side mounting plate 11a, the left side mounting plate 12a, the lower side mounting plate 13a, and the right side mounting plate 14a may be fixed to the shroud side inclined plate 142 by, for example, a double-sided tape or the like.

[0074] As also shown in FIGS. 5 and 8, etc., a locking portion 11c that protrudes downward and extends in the left-right direction is formed at the upper (rear) edge portion of the upper side mounting plate 11a. On the other hand, a vertical surface 142f that extends downward is continuously formed in the left-right direction at the upper edge of the upper side mounting surface 142a provided around the shroud side opening 143. In a state where the outboard engine sealing material 10 is attached to the shroud side inclined plate 142, the locking portion 11c contacts the vertical surface 142f from above and locks to the vertical surface 142f. More specifically, the L-shaped portion composed of the upper side mounting plate 11a and the locking portion 11c is locked to the L-shaped portion composed of the upper side mounting surface 142a and the vertical surface 142f.

[0075] Further, as shown in FIGS. 7 and 9, a left side seal lip 12d that protrudes upward and is curved so as to be located more to the left toward the tip side is provided at the right end of the left side mounting plate 12a. Since the left side seal lip 12d extends while curving to the left, as shown in FIGS. 4 and 5, it is shaped to face the left edge 114b of the cowl side opening 114. When the cowl 110 is mounted, at least the upper end 12dUE of the left side seal lip 12d elastically contacts the left edge 114b of the cowl side opening 114 and its vicinity.

[0076] Also, as shown in FIGS. 7 and 10, at the upper end of the lower side mounting plate 13a, a lower side seal lip 13d is provided which protrudes forward and is curved so as to be positioned forwarder as it goes towards the tip side. Since the lower side seal lip 13d extends while curving forward, as shown in FIGS. 4 and 5, it is shaped to face the lower edge 114c of the cowl side opening 114. When the cowl 110 is mounted, at least the front end 13dFE of the lower side seal lip 13d elastically contacts the lower edge 114c of the cowl side opening 114 and the vicinity thereof.

[0077] Also, as shown in FIGS. 7 and 11, at the left end of the right side mounting plate 14a, a right side seal lip 14d is provided which protrudes upward and is curved so as to be positioned rightward as it goes towards the tip side. Since the right side seal lip 14d extends while curving rightward, as shown in FIGS. 4 and 5, it is shaped to face the right edge 114d of the cowl side opening 114. When the cowl 110 is mounted, at least the upper end 14dUE of the right side seal lip 14d elastically contacts the right edge 114d of the cowl side opening 114 and the vicinity thereof.

[0078] Also, as shown in FIG. 8, on the upper side mounting plate 11a, a support wall 11e and an upper side seal lip 11d are provided. Further, the upper side mounting plate 11a is connected and integrated with the upper side seal lip 11d via the support wall 11e, and the upper side mounting plate 11a and the upper side seal lip 11d are not directly connected in order to set a core hole NH described later.

[0079] The support wall 11e protrudes from the lower end (front end) of the upper side mounting plate 11a towards the upper edge 114a of the cowl side opening 114. The upper side seal lip 11d extends from the upper end of the support wall 11e until it contacts the upper side mounting surface 142a provided around the shroud side opening 143.

[0080] The support wall 11e and the upper side seal lip 11d are integrated at the upper end, but the distance between the support wall 11e and the upper side seal lip 11d becomes wider as it approaches the upper mounting surface 142a. The upper side seal lip 11d is formed so as to be substantially perpendicular to the upper mounting surface 142a provided around the shroud side opening 143.

[0081] The upper mounting surface 142a is provided with a step 142g for locking the lower end 11dLE (on the upper mounting surface 142a side) of the upper side seal lip 11d. In a state where the outboard engine seal material 10 is attached to the shroud side inclined plate 142, the lower end 11dLE of the upper side seal lip 11d contacts and locks to the step 142g from above (rearward).

[0082] Also, as shown in FIGS. 7 to 11, the upper end 11dUE of the upper side seal lip 11d, the upper end 12dUE of the left side seal lip 12d, the front end 13dFE of the lower side seal lip 13d, and the upper end 14dUE of the right side seal lip 14d are positioned on the same plane formed by the periphery of the cowl side opening 114.

[0083] Also, as shown in FIG. 4, the periphery including the upper edge 114a, the left edge 114b, the lower edge 114c, and the right edge 114d provided around the cowl side opening 114 forms an annular single plane. That is, when the cowl 110 is attached, the upper end 11dUE of the upper side seal lip 11d, the upper end 12dUE of the left side seal lip 12d, the front end 13dFE of the lower side seal lip 13d, and the upper end 14dUE of the right side seal lip 14d are arranged on the plane formed by the periphery of the cowl side opening 114.

[0084] Further, as shown in FIGS. 7 to 11, an upper left seal lip 15d is provided between the upper seal lip 11d and the left seal lip 12d, an upper right seal lip 16d is provided between the upper seal lip 11d and the right seal lip 14d, a lower left seal lip 17d is provided between the lower seal lip 13d and the left seal lip 12d, and a lower right seal lip 18d is provided between the lower seal lip 13d and the right seal lip 14d. Also, an upper left mounting plate 15a is provided between the upper mounting plate 11a and the left mounting plate 12a, an upper right mounting plate 16a is provided between the upper mounting plate 11a and the right mounting plate 14a, a lower left mounting plate 17a is provided between the lower mounting plate 13a and the left mounting plate 12a, and a lower right mounting plate 18a is provided between the lower mounting plate 13a and the right mounting plate 14a. The upper left seal lip 15d, the upper right seal lip 16d, the lower left seal lip 17d, and the lower right seal lip 18d each project toward the cowl side opening 114, and the upper left seal lip 15d, the upper right seal lip 16d, the lower left seal lip 17d, and the lower right seal lip 18d each have a curved shape such that the proximal end side is the side closer to the center 10c of the outboard engine seal material of the upper left mounting plate portion 15a of the upper left corner portion 15, the upper right mounting plate portion 16a of the upper right corner portion 16, the lower left mounting plate portion 17a of the lower left corner portion 17, and the lower right mounting plate portion 18a of the lower right corner portion 18, and the tip side is located on the side away from the center 10c of the outboard engine seal material as it goes toward the tip side.

[0085] With respect to the straight shape of the proximal ends of the upper seal lip 11d and the left seal lip 12d, the proximal end side of the upper left seal lip 15d is connected in a chamfered shape. With respect to the straight shape of the proximal ends of the upper seal lip 11d and the right seal lip 14d, the proximal end side of the upper right seal lip 16d is connected in a chamfered shape. With respect to the straight shape of the proximal ends of the lower seal lip 13d and the left seal lip 12d, the proximal end side of the lower left seal lip 17d is connected in a chamfered shape. With respect to the straight shape of the proximal ends of the lower seal lip 13d and the right seal lip 14d, the proximal end side of the lower right seal lip 18d is connected in a chamfered shape. The upper left seal lip 15d, the upper right seal lip 16d, the lower left seal lip 17d, and the lower right seal lip 18d are each connected such that the tip side is an R shape substantially concentric with the chamfered R shape of the proximal end side.

[0086] Also, as shown in FIGS. 5 and 14, a substantially triangular upper left lid portion 15f is provided with the left end of the support wall 11e, the rear end of the upper left seal lip 15d, and the right end of the upper left mounting plate 15a as three sides, and a substantially triangular upper right lid portion 16f is provided with the right end of the support wall 11e, the rear end of the upper right seal lip 16d, and the left end of the upper right mounting plate 16a as three sides. Also, as described above with reference to FIG. 8, a core extraction hole NH is provided without connecting the upper side mounting plate 11a and the lower end 11dLE of the upper side seal lip 11d.

[0087] Also, as shown in FIGS. 5 and 14, the boundary line L9 between the left end of the support wall 11e and the upper left lid portion 15f is positioned more to the left as it goes to the rear side, the boundary line L10 between the upper left lid portion 15f and the upper left mounting plate 15a is positioned more to the left as it goes to the front side, the boundary line L12 between the right end of the support wall 11e and the upper right lid portion 16f is positioned more to the right as it goes to the rear side, and the boundary line L13 between the upper right lid portion 16f and the upper right mounting plate 16a is positioned more to the right as it goes to the front side.

[0088] Also, as described above with reference to FIGS. 7, 9, and 11, insertion holes 12b and 14b for inserting a fastening member B for fastening to the shroud 140 are formed in the left side mounting plate 12a and the right side mounting plate 12a, respectively.

[0089] Furthermore, insertion holes 15b, 16b, 17b, and 18b for inserting the fastening member B may also be formed in the upper left mounting plate 15a, the upper right mounting plate 16a, the lower left mounting plate 17a, and the lower right mounting plate 18a.

[0090] (Function and Effect of the Embodiment) According to this embodiment, as described above with reference to FIGS. 5 to 7, when the upper mounting plate 11, the left mounting plate 12, the lower mounting plate 13, and the right mounting plate 14 of the outboard engine sealing material 10 are attached to the upper mounting surface 142a, the left mounting surface 142b, the lower mounting surface 142c, and the right mounting surface 142d provided around the shroud side opening 143, respectively, since the shroud side opening 143 is formed in the shroud side inclined plate 142, the upper seal lip 11d, the left seal lip 12d, the lower seal lip 13d, and the right seal lip 14d are respectively arranged so as to be in an inclined posture.

[0091] In this state, when the cowl 110 is attached, as shown in FIG. 12, after positioning the cowl 110 above the shroud 140, it is moved in the direction of arrow C. At this time, as described above with reference to FIGS. 5 to 7, since the upper seal lip 11d, the left seal lip 12d, the lower seal lip 13d, and the right seal lip 14d are in inclined postures in different directions, the moving direction of the cowl 110 is different from the extending directions of the upper seal lip 11d, the left seal lip 12d, the lower seal lip 13d, and the right seal lip 14d.

[0092] Specifically, as shown in FIG. 12, when the cowl 110 is attached and attention is paid to the cowl side inclined plate 113 of the inner member 112, since the outboard engine sealing material 10 is fixed to the shroud 140, the cowl side inclined plate 113 will move relative to the outboard engine sealing material 10 in the direction of arrow C.

[0093] Since the left seal lip 12d and the right seal lip 14d of the outboard engine sealing material 10 are curved and protrude leftward and rightward, respectively, even if the cowl side inclined plate 113 moving in the direction of arrow C comes into sliding contact, they will respectively bend and deform leftward and rightward (in the direction of arrow O, which is the direction away from the center), so they will not be turned up.

[0094] In addition, since the lower seal lip 13d curves and protrudes forward, even if the cowl side inclined plate 113 moving in the direction of arrow C comes into sliding contact with this lower seal lip 13d, it bends and deforms forward (in the direction of arrow O, which is the direction away from the center), so it will not turn up.

[0095] On the other hand, as shown by the dashed line in FIG. 12, when the cowl 110 is mounted, the cowl side inclined plate 113 comes into contact with the upper end 11dUE of the upper seal lip 11d. At this time, regarding the upper seal lip 11d, as shown in FIG. 13, since its upper end 11dUE is supported by the support wall 11e, although this upper seal lip 11d bends and deforms forward (in the direction of arrow I, which is the direction approaching the center), it will not turn up and can be brought into close contact with the cowl side inclined plate 113.

[0096] Therefore, it becomes possible to elastically contact all of the upper seal lip 11d, the left seal lip 12d, the lower seal lip 13d, and the right seal lip 14d accurately against the upper edge, left edge, lower edge, and right edge provided around the cowl side opening 114. More specifically, as shown in FIG. 7, only the upper seal lip 11d bends and deforms in the direction approaching the center 10a of the outboard motor seal material 10 (in the direction of arrow I), while the left seal lip 12d, the lower seal lip 13d, and the right seal lip 14d other than the upper seal lip 11d bend and deform in the direction away from the center 10a of the outboard motor seal material 10 (in the direction of arrow O).

[0097] As a result, it is possible to maintain high sealing performance without causing abnormal bending deformation such as the upper seal lip 11d turning up, and it becomes difficult for the seal lip to break.

[0098] Further, according to the present embodiment, since the structure is as described above with reference to FIGS. 7 to 13, when the cowl side inclined plate 113 moving in the direction of arrow C comes into sliding contact, the upper left seal lip 15d is bent and deformed such that the upper side seal lip 11d side bends backward, and as it goes toward the left side seal lip 12d side, the bending direction gradually changes so as to bend leftward. However, at any part, it is bent and deformed in the direction away from the center of the outboard engine seal material 10 (the direction of arrow O).

[0099] When the cowl side inclined plate 113 moving in the direction of arrow C comes into sliding contact, the upper right seal lip 16d is bent and deformed such that the upper side seal lip 11d side bends backward, and as it goes toward the right side seal lip 14d side, the bending direction gradually changes so as to bend rightward. However, at any part, it is bent and deformed in the direction away from the center of the outboard engine seal material 10 (the direction of arrow O).

[0100] When the cowl side inclined plate 113 moving in the direction of arrow C comes into sliding contact, the lower left seal lip 17d is bent and deformed such that the lower side seal lip 13d side bends forward, and as it goes toward the left side seal lip 12d side, the bending direction gradually changes so as to bend leftward. However, at any part, it is bent and deformed in the direction away from the center of the outboard engine seal material 10 (the direction of arrow O).

[0101] When the cowl side inclined plate 113 moving in the direction of arrow C comes into sliding contact, the lower right seal lip 18d is bent and deformed such that the lower side seal lip 13d side bends forward, and as it goes toward the right side seal lip 14d side, the bending direction gradually changes so as to bend rightward. However, at any part, it is bent and deformed in the direction away from the center of the outboard engine seal material 10 (the direction of arrow O).

[0102] Further, as described above with reference to FIGS. 12 and 13, the left side seal lip 12d, the lower side seal lip 13d, and the right side seal lip 14d are each bent and deformed in the direction away from the center of the outboard engine seal material 10 (the direction of arrow O).

[0103] That is, as shown in FIG. 7, only the upper sealing lip 11d is bent and deformed in the direction approaching the center of the outboard engine sealing material 10 (the direction of arrow I), and the other left upper sealing lip 15d, left side sealing lip 12d, lower left sealing lip 17d, lower side sealing lip 13d, lower right sealing lip 18d, right side sealing lip 14d, and upper right sealing lip 16d are each bent and deformed in the direction away from the center of the outboard engine sealing material 10 (the direction of arrow O).

[0104] According to the present embodiment, as described above with reference to FIGS. 5 and 14, a substantially triangular portion having three sides formed by the left end of the support wall 11e, the rear end of the upper left sealing lip 15d, and the right end of the upper left mounting plate 15a can be closed by the upper left cover portion 15f, and a substantially triangular portion having three sides formed by the right end of the support wall 11e, the rear end of the upper right sealing lip 16d, and the left end of the upper right mounting plate 16a can be closed by the upper right cover portion 16f. Therefore, the rigidity of the outboard engine sealing material 10 is improved, the sealing performance is improved, and the appearance of the outboard engine sealing material 10 is also improved.

[0105] According to the present embodiment, as described above with reference to FIG. 8, since the core extraction hole NH is provided without connecting the upper mounting plate 11a and the lower end of the upper sealing lip 11d, after the upper sealing lip 11d and the support wall 11e are molded, the core (not shown) of this portion (pseudo-hollow portion) can be easily taken out.

[0106] According to the present embodiment, as described above with reference to FIG. 7, since the left side mounting plate 12a and the right side mounting plate 14a can be fastened to the shroud 140 respectively, the outboard engine sealing material 10 is firmly fixed and displacement is less likely to occur, and a gap is less likely to be formed between the shroud 140 and the outboard engine sealing material 10.

[0107] The above-described embodiments are merely illustrative in all respects and should not be construed in a limiting sense. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention. Although not shown, for example, the present invention can also be applied when a shroud side opening and a cowl side opening are provided as openings for intake of the engine 101.

Industrial Applicability

[0108] As described above, the sealing material for an outboard motor according to the present disclosure can be applied, for example, to a portion constituting a passage for discharging the heat of an engine.

Explanation of Signs

[0109] 10 Sealing material for outboard motor 11 Upper side portion 11a Upper side mounting plate 11d Upper side seal lip 11c Locking portion 11e Support wall 12 Left side portion 12a Left side mounting plate 12d Left side seal lip 13 Lower side portion 13a Lower side mounting plate 13d Lower side seal lip 14 Right side portion 14a Right side mounting plate 14d Right side seal lip 15 Upper left corner portion 16 Upper right corner portion 17 Lower left corner portion 18 Lower right corner portion 100 Outboard motor 101 Engine 103 Propeller 110 Cowl 114 Cowl side opening 140 Shroud 142f Vertical surface 142g Step 143 Shroud side opening

Claims

1. An outboard motor sealing material provided in an outboard motor having a shroud that covers an engine driving a propeller and a cowl that covers the shroud from above, for sealing between a shroud-side opening formed on an upper side of the shroud and a cowl-side opening formed in a portion of the cowl corresponding to the shroud-side opening, wherein the shroud-side opening is formed in an inclined portion of the shroud, and has a rectangular ring shape having an upper side portion extending along an upper edge of the shroud-side opening, a left side portion extending along a left edge of the shroud-side opening, a lower side portion extending along a lower edge of the shroud-side opening, and a right side portion extending along a right edge of the shroud-side opening, wherein the upper side portion, the left side portion, the lower side portion, and the right side portion each have an upper side mounting plate, a left side mounting plate, a lower side mounting plate, and a right side mounting plate that are attached to an upper side mounting surface, a left side mounting surface, a lower side mounting surface, and a right side mounting surface provided around the shroud-side opening, wherein the upper side mounting plate is provided with a support wall that protrudes toward and extends until it contacts an upper edge of the cowl-side opening, and an upper side seal lip that extends from a tip of the support wall until it contacts the upper side mounting surface provided in the shroud-side opening, wherein the left side mounting plate is provided with a left side seal lip that protrudes toward and extends until it contacts a left edge of the cowl-side opening, wherein the lower side mounting plate is provided with a lower side seal lip that protrudes toward and extends until it contacts a lower edge of the cowl-side opening, and wherein the right side mounting plate is provided with a right side seal lip that protrudes toward and extends until it contacts a right edge of the cowl-side opening. An outboard motor sealing material characterized by the above.

2. In the outboard motor sealing material according to Claim 1, an upper edge of the upper side mounting plate is provided with a locking portion that protrudes downward and locks to a vertical surface formed on an upper edge of the upper side mounting surface provided in the shroud-side opening. An outboard motor sealing material characterized by the above.

3. In the outboard motor sealing material according to Claim 1, the upper side seal lip is formed to be substantially perpendicular to the upper side mounting surface provided in the shroud-side opening, and the upper side mounting surface is provided with a step where a lower end on the upper side mounting surface side of the upper side seal lip locks. An outboard motor sealing material characterized by the above.

4. In the outboard motor sealing material according to Claim 1, The upper side mounting plate, the left side mounting plate, the lower side mounting plate, and the right side mounting plate are positioned on the same plane formed by the upper mounting surface, the left mounting surface, the lower mounting surface, and the right mounting surface provided in the shroud side opening. A sealing material for an outboard motor, characterized in that.

5. In the sealing material for an outboard motor according to claim 1, The upper end of the upper side seal lip, the upper end of the left side seal lip, the front end of the lower side seal lip, and the upper end of the right side seal lip are positioned on the same plane formed by the cowl side opening. A sealing material for an outboard motor, characterized in that.

6. In the sealing material for an outboard motor according to claim 1, An upper left corner portion is provided between the upper side portion and the left side portion. An upper right corner portion is provided between the upper side portion and the right side portion. A lower left corner portion is provided between the lower side portion and the left side portion. A lower right corner portion is provided between the lower side portion and the right side portion. The upper side portion, the upper left corner portion, the left side portion, the lower left corner portion, the lower side portion, the lower right corner portion, the right side portion, and the upper right corner portion are formed so as to be continuously rectangular annular in this order. A sealing material for an outboard motor, characterized in that.

7. In the sealing material for an outboard motor according to claim 6, An upper left seal lip is provided between the upper side seal lip and the left side seal lip. An upper right seal lip is provided between the upper side seal lip and the right side seal lip. A lower left seal lip is provided between the lower side seal lip and the left side seal lip. A lower right seal lip is provided between the lower side seal lip and the right side seal lip. The upper left seal lip, the upper right seal lip, the lower left seal lip, and the lower right seal lip each extend toward the cowl side opening until they protrude and contact, and the upper left seal lip, the upper right seal lip, the lower left seal lip, and the lower right seal lip each have the upper left mounting plate of the upper left corner portion, the upper right mounting plate of the upper right corner portion, the lower left mounting plate of the lower left corner portion, and the lower right mounting plate of the lower right corner portion. With the side closer to the center of the outboard motor sealing material as the base end side, the tip side is positioned on the side away from the center of the outboard motor sealing material, and the upper left seal lip, the upper right seal lip, the lower left seal lip, and the lower right seal lip each have a tip side that is connected as a substantially concentric R shape with respect to the chamfered R shape of the base end side. An outboard engine sealing material, characterized in that...

8. In the outboard engine sealing material according to Claim 7, a substantially triangular upper left lid portion is provided with three sides being the left end of the support wall, the rear end of the upper left seal lip, and the right end of the upper left mounting plate; a substantially triangular upper right lid portion is provided with three sides being the right end of the support wall, the rear end of the upper right seal lip, and the left end of the upper right mounting plate; and a core hole is provided without connecting the upper side mounting plate and the lower end of the upper side seal lip. An outboard engine sealing material, characterized in that...

9. In the outboard engine sealing material according to Claim 8, the boundary line between the left end of the support wall and the upper left lid portion is positioned more to the left as it goes to the rear side, the boundary line between the upper left lid portion and the upper left mounting plate is positioned more to the left as it goes to the front side, the boundary line between the right end of the support wall and the upper right lid portion is positioned more to the right as it goes to the rear side, the boundary line between the upper right lid portion and the upper right mounting plate is positioned more to the right as it goes to the front side. An outboard engine sealing material, characterized in that...

10. In the outboard engine sealing material according to any one of Claims 1 to 9, insertion holes for inserting fastening members for fastening to the shroud are respectively formed in at least the left side mounting plate and the right side mounting plate. An outboard engine sealing material.

Images