JP2016150713A - Outboard engine top cover and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outboard engine top cover capable of effectively suppressing the increase of an atmospheric temperature around an engine by providing a surface layer with a sufficient and stable reflection function of solar light and easily obtaining a cover of environment-friendly and stable surface quality, and a manufacturing method thereof.SOLUTION: An outboard engine top cover 2 for covering the surroundings of an outboard engine fitted/supported to the stern of a hull to be steerable and vertically movable is configured by including a base material 8 having a recessed part 2a a lower part of which is opened, and a surface layer 9 having a vapor deposition metal layer 9b formed by vacuum-depositing vapor deposition metal on the surface of the base material. The surface layer includes a vapor deposition metal layer formed on the surface of the base material molded in advance by SMC molding, a top coat layer 9c formed on the surface of the vapor deposition layer, and the like.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a top cover for an outboard motor that covers the periphery of the engine of the outboard motor and suppresses an increase in the ambient temperature around the engine, and a method for manufacturing the same.

  Conventionally, a top cover for an outboard motor is composed of a base material formed into a cap shape with a resin or the like, and a surface layer integrally formed on the surface of the base material with a paint or a sticker. Is common. For example, Patent Document 1 is published as a publication relating to outboard motors.

JP 7-149289 A

  However, in such a top cover, it is difficult to give the surface layer a sufficient sunlight reflection function, and it is difficult to suppress the temperature rise in the atmosphere around the engine. Depending on the atmosphere, the fuel in the fuel hose connected to the engine may vaporize, making it difficult to start the engine. In addition, since the surface layer is formed on the surface of the base material by painting or stickers, there is a concern about the adverse effects on the environment caused by paints, etc. It is difficult to get a top cover.

  The present invention has been made in view of such circumstances, and the object thereof is to provide a surface layer with a sufficient and stable reflection function of sunlight to effectively suppress an increase in the ambient temperature around the engine. Another object of the present invention is to provide a top cover for an outboard motor and a method for manufacturing the same which can easily provide an environmentally friendly and stable surface quality cover.

  In order to achieve such an object, the invention described in claim 1 of the present invention is for an outboard motor that covers the periphery of an engine for an outboard motor that is steerable and supported in a vertically movable manner. A top cover, wherein the top cover is composed of a base material having a recess having an opening at the bottom, and a surface layer having a deposited metal layer formed by vacuum-depositing a deposited metal on the surface of the substrate. It is characterized by being.

  At this time, the surface layer is formed on the surface of the vapor-deposited metal layer formed on the surface of the base material previously molded by the SMC molding method, as in the invention described in claim 2. It is preferable to provide a top coat layer. Furthermore, it is preferable that a base layer is formed between the base material and the deposited metal layer as in the invention described in claim 3.

  The invention according to claim 4 is a method of manufacturing a top cover for an outboard motor that covers the periphery of an engine for an outboard motor that can be steered and supported to move up and down on the stern of the hull. A deposited metal layer is formed by vacuum-depositing a deposited metal on the surface of a base material that has a recess having an opening in the lower portion and is shaped to cover the periphery of the engine, and after the deposited metal layer is formed, a top is formed on the surface. A coating layer is formed. At this time, the formation of the vapor-deposited metal layer and the top coat layer is preferably performed by masking the exhaust port provided on the side surface of the base material from the back side as in the invention described in claim 5.

  According to the invention described in claim 1 of the present invention, a substrate having a recess having a lower opening, and a surface layer having a deposited metal layer formed by vacuum deposition of a deposited metal on the surface of the substrate. Therefore, the vapor deposition metal layer on the surface layer can have a sufficient and stable reflection function of sunlight, effectively suppressing an increase in the ambient temperature around the engine, making it difficult for the engine to start, etc. In addition to the prevention, by forming the vapor-deposited metal layer of the surface layer by vacuum vapor deposition, it is possible to easily obtain a top cover that is environmentally friendly and has a stable surface quality.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the deposited metal layer formed on the surface of the base material previously molded by the SMC molding method, and the deposited metal layer Since the top coat layer formed on the surface is provided, the deposited metal layer can be protected by the top coat layer, and the sunlight reflection function and the surface quality can be stably maintained over a long period of time.

  Furthermore, according to the invention described in claim 3, in addition to the effect of the invention described in claim 2, since the base layer is formed between the substrate and the deposited metal layer, the deposited metal layer is used as the substrate. Can be stably formed on the surface side, and the reflection function and surface quality of sunlight can be stably maintained over a long period of time.

  According to the invention described in claim 4, the deposited metal layer is formed by vacuum-depositing the deposited metal on the surface of the base material that has a concave portion having an opening at the lower portion and is shaped so as to cover the periphery of the engine. In addition, since the top coat layer is formed on the surface of the deposited metal layer, the deposited metal layer on the surface layer can have a sufficient and stable reflection function of sunlight, effectively increasing the ambient temperature around the engine. The surface layer formed by vacuum evaporation can easily obtain a top cover that is environmentally friendly and has a stable surface quality.

  According to the invention described in claim 5, in addition to the effect of the invention described in claim 4, when forming the deposited metal layer and the top coat layer, the exhaust port provided in the substrate is provided on the back side. Therefore, it is possible to prevent the deposition metal or the top coat agent from adhering to, for example, a mounting screw on the back side of the base material, and to easily perform the operation of mounting the top cover to the outboard motor.

Side view of an outboard motor using a top cover according to the present invention Partial sectional view of the top cover Other partial sectional views Schematic configuration diagram of a vacuum deposition apparatus used in the manufacturing method of the present invention AA arrow view of FIG. Process diagram showing the manufacturing method

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the outboard motor 1 to which the top cover 2 of the present invention is attached is arranged at the upper part to cover the periphery of the engine 3 and the lower part of the top cover 2. An under cover 4, an extension case 5 disposed below the under cover 4, and a gear case 6 disposed below the extension case 5.

  A screw 7 is disposed behind the gear case 6, and a swivel is provided between the under cover 4 and the extension case 5 in front of the outboard motor 1 with respect to the stern of the hull of the outboard motor 1. A stern bracket (none of which is shown) is disposed so as to be capable of rotational steering about the axis and tilt operation (up and down movement) about the tilt axis.

  The top cover 2 has an upper surface and a side surface, and a lower portion is opened to form a concave portion 2a. The engine 3 is accommodated in the concave portion 2a so that the upper portion and the side surface of the engine 3 are accommodated. Etc. are covered with a predetermined interval (space). For example, an exhaust port 2b is formed in the side surface of the top cover 2, and the inside and outside of the top cover 2 are in communication with each other at the exhaust port 2b, so that a high temperature atmosphere around the engine 3 due to the operation of the engine 3 or the like. The air is exhausted to the outside of the top cover 2.

  The top cover 2 is formed as shown in FIGS. That is, the base material 8 formed in a predetermined shape capable of covering the outer shape of the engine 3 and components such as a fuel hose arranged around the engine 3 in advance, and the anti-recess 2a of the base material 8 And a surface layer 9 formed on the side surface. At this time, the base material 8 is formed to a predetermined thickness by, for example, an SMC molding method, and the exhaust port 2b is formed by post-processing after molding, or is formed by simultaneous processing with molding.

  The surface layer 9 has a three-layer structure shown in FIG. 2 or a two-layer structure shown in FIG. The surface layer 9 shown in FIG. 2 was formed on the surface of the base metal layer 9a formed on the surface of the substrate 8, the vapor deposited metal layer 9b formed on the surface of the base layer 9a, and the surface of the vapor deposited metal layer 9b. It is comprised with the topcoat layer 9c (topcoat). Further, the surface layer 9 shown in FIG. 3 is obtained by omitting the base layer 9a in the three-layer structure of FIG. 2, and is composed of a vapor deposition metal layer 9b and a topcoat layer 9c.

  Further, as the vapor deposition metal of the vapor deposition metal layer 9b of the surface layer 9, metals such as inexpensive aluminum, rust-resistant stainless steel, or high-grade gold are used and formed by the vacuum vapor deposition apparatus 11 as will be described later. The The thicknesses of the layers 9a to 9c of the surface layer 9 are set such that, for example, the base layer 9a is set to 20 μm to 30 μm, the deposited metal layer 9b is set to 0.5 μm to 5 μm, and the top coat layer 9c is set to 20 μm to 30 μm. It has become. Whether the three-layer structure shown in FIG. 2 or the two-layer structure shown in FIG. 3 is adopted as the surface layer 9 is used depending on the performance and cost of the outboard motor 1 or the like. It has become so.

  Next, a method for manufacturing the top cover 2 configured as described above will be described. First, since the top cover 2 of the present invention has the deposited metal layer 9b on the surface layer 9, the vacuum deposition apparatus 11 shown in FIGS. 4 and 5 is used to form the deposited metal layer 9b. That is, the vacuum vapor deposition apparatus 11 used in the present invention has a vacuum chamber 12 having a volume capable of accommodating a plurality (two in the figure) of the top cover 2 (top cover base material to be described later). The vacuum chamber 12 includes a base 12a on a disk, and a bell-shaped container 12b that can move up and down, with the outer periphery of the lower end being in close contact with the upper surface of the outer periphery of the base 12a.

  Two rails 13a and 13b that are circular in plan view are disposed on the base 12a, and two tables 14a and 14b that are circular in plan view are provided on the two rails 13a and 13b. Are arranged at opposite positions in the diameter direction. The tables 14a and 14b are disposed along the two rails 13a and 13b so as to be able to rotate (revolve) in the circumferential direction (in the direction of arrow A in FIG. 5) of the container 12b. 14b itself can rotate (rotate) around the shaft 15 in the direction of the arrow B in FIG. Further, for example, four support rods 16 are erected on the upper surfaces of the tables 14a and 14b, and the inner surfaces (upper surfaces) of the recesses 2a of the top cover 2 as a workpiece are supported on the upper portions of the respective support rods 16. It has become.

  Further, a rod-shaped heater 17 having a predetermined length is erected at the center position of the base 12 a, and a vapor deposition metal 18 is wound around a predetermined interval position in the height direction of the heater 17. The lower portion of the heater 17 is supported in a vertical state on a heater support portion 17a provided at the center position of the base 12a. The vapor deposition metal 18 is wound around a predetermined position of the heater 17 and held at the predetermined position of the heater. Further, the heater 17 is electrically connected to a power supply device 19 disposed outside the container 12b, and a predetermined current is supplied from the power supply device 19 to the heater 17, whereby resistance heating (energization) of the heater 17 is performed. The vapor-deposited metal 18 in contact with the heater 17 is heated to a predetermined temperature and evaporated in the vacuum container 12b.

  A suction port 21 is provided at a predetermined position of the base 12a, and the suction port 21 is connected to, for example, a vacuum pump 20 installed in a basement. Further, a motor or the like that rotates the vacuum pump 20 or the power supply device 19 or the tables 14a and 14b along the rails 13a and 13b or rotates the tables 14a and 14b itself is connected to a control device (not shown). Each device, motor, etc. can be operated automatically or manually by the control signal of this control device.

  Here, the manufacturing method of the top cover 2 using the above vacuum vapor deposition apparatus 11 is demonstrated based on process drawing of FIG. As shown in FIG. 6, when the surface layer 9 has a three-layer structure, it is molded in advance by the SMC molding method described above in a separate process, and a mounting screw or the like is attached inside or an exhaust port 2b is provided. A top cover base material (hereinafter referred to as a workpiece) is prepared, and the exhaust port 2b of the workpiece is masked (K01) with a masking tape 22 (see FIG. 1) or the like from the back side.

  In this masking state, the base layer 9a is formed by base coating (K02). For example, a urethane paint is used as the base coating, and is performed by a robot or a brush. Thereafter, the vapor deposition metal 18 is wound around the heater 17 of the vacuum vapor deposition apparatus 11 and set, and the workpiece provided with the base layer 9a is set on each support rod 16 of each table 14a, 14b of the vacuum vapor deposition apparatus 11 (K03). To do. Needless to say, these sets are performed by ascending and retracting the container 12b of the vacuum chamber 12 from the base 12a with a crane or the like.

  In addition, the set of two workpieces on the two tables 14a and 14b may be set so that the workpieces face in the same direction. As will be described later, the tables 14a and 14b are attached to the rails 13a and 13b. Since it rotates while revolving along it, it may be set without specifying the direction. However, as shown in FIG. 2, the exhaust port 2b is reversed at a predetermined facing position from the viewpoint of uniform deposition of the deposited metal 18. It is preferable to set it so that it is positioned.

  When the deposition metal 18 and the workpiece are set, the container 12b of the vacuum chamber 12 is lowered to bring its outer peripheral end into close contact with the outer peripheral portion of the base 12a, and the vacuum pump 20 is operated to bring the container 12b into a vacuum state. At the same time, the power source device 19 is operated in this vacuum state, and the heater 17 is energized and heated for a predetermined time. By this energization heating, the vapor deposition metal 18 wound around the heater 17 is heated and evaporated in the vacuum container 12b, and the vaporized vapor deposition metal adheres to the surface of the workpiece, that is, vapor deposition (K04).

  During the vacuum deposition, the two workpieces set on the two tables 14a and 14b rotate while revolving as described above, so that their positions (rotation angle and the like) are changing in the container 12b. As a result, the entire surface becomes the same deposition condition, and the deposited metal 18 is uniformly deposited on the entire surface of the two workpieces. Moreover, since the exhaust port 2b provided in the side surface of each workpiece is masked from the back side, the vapor deposition metal 18 enters the concave portion 2a of the workpiece and is provided in the concave portion 2a of the top cover 2. Adhering to the mounting screw or the like is also prevented.

  When the vacuum deposition is completed, the power supply device 19 and the vacuum pump 20 are stopped, and the container 12b is raised in a state where the vacuum state is released, and the workpieces on the tables 14a and 14b are taken out (K05). Then, a top coat layer 9c is formed by top coating (K06) a transparent urethane resin or silicon resin with a robot or manually on the surface of the deposited metal layer 9b of the workpiece on which the deposited metal layer 9b is formed by vacuum deposition. Even during this top coat, the exhaust port 2b is masked, so that the top coat resin is prevented from adhering to the inside of the exhaust port 2b. Thereafter, the masking is removed (K07) to complete a series of operations, and the top cover 2 having a three-layer surface layer is manufactured.

  The above is the case where the surface layer 9 has a three-layer structure. However, when the surface layer 9 shown in FIG. 3 has a two-layer structure, the base coating step K02 can be omitted as shown by a two-dot chain line a in FIG. It ’s fine. The process shown in FIG. 6 shows the entire flow from the masking of the exhaust port after the work is formed. For example, when masking is performed in the forming process, the process starts from the base coating in the process K02. If the base coating or top coat is performed in a separate factory or the like in advance, an appropriate process is adopted depending on the factory configuration and the equipment state, such as performing only the processes K03 to K05. be able to.

  In the above description, the heating method of the vapor deposition metal 18 by the vacuum vapor deposition apparatus 11 has been described by resistance heating using the heater 17, but it is of course possible to employ a heating method such as a laser or an electron beam. is there. Further, the setting of the vapor deposition metal 18 to the heater 17 is not limited to the winding method in which the vapor deposition metal 18 is wound around a winding plate or the like provided at a predetermined position of the heater 17. It is also possible to use a method of storing in a lumber tray.

  As described above, according to the top cover 2, the base 8 having the recess 2 a having an opening at the bottom, and the surface having the vapor deposition metal layer 9 b formed by vacuum vapor deposition of the vapor deposition metal 18 on the surface of the base 8. Since the layer 9 is provided, the vapor deposition metal layer 9b of the surface layer 9 can have a sufficient and stable reflection function of sunlight, and the ambient temperature around the engine 3 of the outboard motor 1 used outdoors is increased. For example, it is possible to prevent the engine 3 from becoming difficult to start. In the conventional structure, the ambient temperature around the engine 3 is 80 ° C. or higher, whereas when the top cover 2 is used, the ambient temperature around the engine 3 is lowered by at least about 10 ° C. Has been confirmed experimentally.

  Further, since the deposited metal layer 9b of the surface layer 9 is formed by vacuum deposition, it is easy to obtain the top cover 2 having a surface quality which is environmentally friendly and beautiful in design compared to conventional paints and plating. be able to. In particular, since the surface layer 9 includes the vapor-deposited metal layer 9b, the durability and weather resistance of the surface layer 9 can be greatly increased as compared with the case where a conventional hot stamp or the like is used, and the surface layer 9 is 3 By selecting the layer structure or the two-layer structure, it is possible to obtain the top cover 2 that can be applied to the outboard motor 1 having various performances and has excellent versatility.

  In addition, since it includes a vapor-deposited metal layer 9b formed on the surface of the base material 8 previously molded by the SMC molding method and a topcoat layer 9c formed on the surface of the vapor-deposited metal layer 9b, the topcoat layer 9c is used for vapor-deposited metal. The layer 9b can be protected, the sunlight reflecting function can be stably maintained over a long period of time, and design deterioration can also be reliably suppressed. In particular, if the base layer 9a is formed between the surface of the base material 8 and the vapor deposition metal layer 9b, the vapor deposition metal layer 9b can be stably formed on the surface side of the base material 8, and the sunlight reflecting function, etc. Can be maintained stably for a longer period of time.

  Further, according to the method of manufacturing the top cover 2, a metal deposition material is vacuum deposited on the surface of the base material 8 that has a recess 2 a having an opening at the lower portion and is shaped so as to cover the periphery of the engine 3. In order to form the vapor-deposited metal layer 9b and to form the topcoat layer 9c on the surface of the vapor-deposited metal layer 9b, the vapor-deposited metal layer 9b of the surface layer 9 is provided with a sufficient and stable reflection function of sunlight. The rise in ambient temperature can be effectively suppressed to prevent the engine 3 from starting easily, and the surface layer 9 formed by vacuum deposition is environmentally friendly, beautifully designed and stable. The top cover 2 can be easily manufactured.

  In particular, when the deposited metal layer 9b and the topcoat layer 9c are formed, the back surface side of the exhaust port 2b provided in the substrate 8 is masked, so that the substrate 8 such as the deposited metal 18 or the topcoat resin is used. For example, the attachment of the top cover 2 when assembling the outboard motor 1 can be easily performed by preventing the back surface from being attached to, for example, the mounting screw. Moreover, since the vapor deposition metal 18 is vacuum-deposited while revolving and rotating the two tables 14a and 14b of the vacuum vapor deposition apparatus 11, the vapor deposition metal 18 can be uniformly vapor-deposited over the entire surface of the top cover 2, and the top cover 2 The surface quality can be further improved.

  Further, when setting the top cover 2 on the tables 14a and 14b, there is no need to worry about the direction thereof, the setting work can be easily performed, and two tables 14a and 14b can be used. The top cover 2 can be vacuum-deposited at the same time, so that it can be efficiently manufactured, and the manufacturing cost of the top cover 2 can be reduced.

  Note that the configuration of the vacuum deposition apparatus 11, the shape of the top cover 2, the form of the heater 17 and the like in the embodiment are merely examples. For example, the number of tables of the vacuum deposition apparatus 11 is three or more, or the top cover. The two exhaust ports 2b are provided in a cutout shape at the lower end opening end, or the power supply device 19 supplies power to the heater 17 from the upper and lower ends of the heater 17, etc. An appropriate configuration can be adopted within a range not departing from the gist.

  The present invention is suitable for use as a top cover for all outboard motors used outdoors, but can also be used for, for example, an undercover of an outboard motor and other covers.

1 ... Outboard motor 2 ... Top cover 2a ... Recess 2b ... Exhaust port 8 ...・ ・ ・ ・ ・ ・ Base material 9 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Surface layer 9a ・ ・ ・ ・ ・ ・ ・ ・ Underlayer 9b ・ ・ ・ ・ ・ ・ ・ ・ Vapor deposited metal layer 9c ・ ・ ・ ・ ・ ・···························································································································· .. Rails 14a, 14b ... Table 15 ... Shaft 16 ... Support rod 17 ... Heater 18 ... Vapor deposition metal 19 ... Power supply 20 ... Vacuum pump 21 ... Suction port

Claims (5)

A top cover for an outboard motor that covers the periphery of an engine for an outboard motor that is steerable and supported by a stern of the hull so as to be movable up and down.
The top cover is composed of a base material having a recess having an opening at the bottom, and a surface layer having a deposited metal layer formed by vacuum-depositing a deposited metal on the surface of the substrate. Top cover for outboard motors.   The said surface layer is equipped with the said vapor deposition metal layer formed in the surface of the said base material previously shape | molded by the SMC shaping | molding method, and the topcoat layer formed in the surface of this vapor deposition metal layer, It is characterized by the above-mentioned. A top cover for an outboard motor as described in 1.   The outboard motor top cover according to claim 2, wherein a base layer is formed between the base material and the deposited metal layer. A method of manufacturing a top cover for an outboard motor that covers the periphery of an engine for an outboard motor that is steerable and supported by a stern of the hull so as to be movable up and down.
A deposited metal layer is formed by vacuum-depositing a deposited metal on the surface of a base material that has a concave portion with an opening at the lower portion and is shaped to cover the periphery of the engine. A method of manufacturing a top cover for an outboard motor, comprising forming a coat layer.   5. The outboard motor top cover according to claim 4, wherein the vapor deposition metal layer and the top coat layer are formed by masking an exhaust port provided on a side surface of the base material from a back surface side. Production method.

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