JP3980362B2 - Small planing boat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a riding type personal watercraft (Personal Watercraft; also referred to as PWC) that jets a water flow backward and sails in response to the reaction, and in particular, adjacent to the rear of a riding type seat. It relates to the rear cowling provided.
[0002]
[Background Art and Problems to be Solved by the Invention]
The so-called jet-propelled riding type personal watercraft has been widely used in recent years for leisure, sports or rescue. In this small planing boat, the hull is generally propelled by injecting water sucked from a water inlet provided on the bottom of the boat under pressure by a water jet pump and accelerating it.
[0003]
In the case of this riding type personal watercraft, the steering nozzle disposed behind the injection port of the water jet pump is swung left and right by operating the bar type steering handle left and right to Change the injection direction to left and right and steer the boat to the right or left.
[0004]
By the way, in this small planing boat, for those used for leisure or sports, the small planing boat itself is desired to improve the merchantability, and its appearance design is also an important factor. Needless to say, a small planing boat that is more comfortable to ride is preferable for the passenger riding on the rear of the seat. Furthermore, for those requiring maintenance, it is desirable that an object to be maintained is arranged at a location where it can be easily approached.
[0005]
The present invention has been made in view of the current situation, and is a small planing boat that is excellent in appearance design, comfortable for passengers, and that can easily approach those requiring maintenance. The purpose is to provide.
[0006]
[Means for Solving the Problems]
The above-described problem can be solved by a small planing boat having the following configuration. That is,
A small planing boat according to the first aspect of the present invention is a riding type small planing boat configured to be propelled by an engine.
A rear cowling is provided at the rear of the riding type seat.
[0007]
Thus, according to the small planing boat configured as described above, the rear cowling extends from the rear of the seat toward the rear thereof, so that the smartness and dynamic feeling are emphasized and the appearance design is excellent. It becomes a small planing boat, and the vortex behind the seat is reduced and the fluid resistance can be reduced. Furthermore, by using the interior of the rear cowling as a storage space, it is possible to provide a storage box or the like for storing items that require maintenance or frequently used items.
[0008]
Further, in the personal watercraft, when the rear cowling is provided so that the height of the rear cowling is higher than the height of the rear portion of the seat, and a cushion is disposed at the tip of the rear cowling, these ride on the rear portion of the seat. The passenger has a function of being supported from the back, or a backrest depending on the height, and a small planing boat that is comfortable to ride when riding.
[0009]
Further, in the personal watercraft, a storage space is formed inside the rear cowling, and when a battery is stored in the storage space of the rear cowling, the level of the electrolyte can be checked, and This is a preferred embodiment in that maintenance can be easily performed when necessary.
[0010]
Further, in the small planing boat, when a hand grip is attached to the rear part of the rear cowling, it can be used as a hand grip for a passenger.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a riding type personal watercraft according to an embodiment of the present invention will be specifically described with reference to the drawings.
[0012]
FIG. 1 is a partial perspective view of a small planing boat in which the front part of the boat showing the configuration of the rear cowling of a riding type small planing boat according to an embodiment of the present invention is omitted, and FIG. 7 is a small planing according to the embodiment of the present invention. FIG. 8 is a plan view of FIG. 7.
[0013]
7 and 8, A is a hull, and this hull A is composed of a hull H and a deck D covering the hull H, and a connection line connecting the hull H and the deck D on the entire circumference is called a gunnel line G. . In these drawings, L indicates a water line.
[0014]
As shown in FIG. 8, a substantially rectangular opening 16 is formed in the upper surface of the hull A in a plan view extending in the longitudinal direction slightly behind the center of the deck D, and is shown in FIGS. Thus, a seat S for riding is disposed above the opening 16.
[0015]
The engine E is disposed in a space 20 having a “convex” cross section surrounded by the hull H and the deck D below the seat S.
In this embodiment, the engine E is a multi-cylinder (four cylinders in this embodiment) four-cycle engine E, and the crankshaft 26 of the engine E extends along the longitudinal direction of the hull A as shown in FIG. The output end of the crankshaft 26 is integrally rotatable to the pump shaft 21S side of the water jet pump P to which the impeller 21 is attached via the propeller shaft 27. It is connected. The outer periphery of the impeller 21 is covered with a pump casing 21C. Water taken from the water inlet 17 provided on the bottom surface of the small planing boat is taken in through the water intake passage and is added by the water jet pump P. It is configured to obtain a propulsive force through pressure / acceleration and discharge from the rear end injection port 21K through a pump nozzle (spout part) 21R whose water flow cross-sectional area becomes smaller as it goes backward.
[0016]
In FIG. 7, 21V is a stationary blade for rectifying water passing through the water jet pump P. 7 and 8, reference numeral 24 denotes a bar-type steering handle. By operating the handle 24 to the left and right, the steering wheel behind the pump nozzle 21 </ b> R is connected via a cable 25 indicated by a dashed line in FIG. 8. The nozzle 18 is swung left and right so that the boat can be steered in a desired direction when the water jet pump P is in operation.
[0017]
Further, as shown in FIG. 7, a bowl-shaped reverse deflector 19 is disposed above and behind the steering nozzle 18 so as to be swingable downward about a horizontally disposed swing shaft 19a. The deflector 19 is configured to swing backward to a lower position behind the steering nozzle 18 so that water discharged rearward from the steering nozzle 18 can be turned forward to move backward.
[0018]
7 and 8, reference numeral 22 denotes a rear deck. The rear deck 22 is provided with an openable / closable hatch cover 29, and a small-capacity storage box is formed below the hatch cover 29. 7 or 8, reference numeral 23 denotes a front hatch cover, and a box (not shown) for storing equipment and the like is provided below the hatch cover 23. In FIG. 8, Lt is a throttle lever for operating the rotational speed of the engine E.
[0019]
By the way, in the personal watercraft according to the embodiment of the present invention, the rear cowling 1 as shown in FIG. 1 is provided at the rear portion (rear end portion) of the seat S. That is, as shown in FIG. 1, a rear cowling 1 having a leading end extending below the passenger seat portion Sp of the sheet S is attached behind the passenger seat portion Sp of the seat S. Yes. The upper end 1U of the rear cowling 1 is formed in a flat shape to form an upper end surface 1u, and the tip of the lower end 1L of the rear cowling 1 is as far as the position below the front end portion of the passenger seat portion Sp as described above. The rear end of the lower end 1L is located at the position of the rear end of the space 20 (see FIG. 8) in which the engine E (see FIG. 7) raised above the hull H is accommodated. The rear cowling 1 is lifted so as to incline upward from the rear end of the lower end 1L and reaches the upper storage box portion 1B. In other words, the rear cowling 1 includes a box portion 1B having the front surface 1F as the front surface of the box portion 1B, and both side surfaces 1s of the box portion 1B extending obliquely downward toward the front side of the boat, The lower part and the rear part of the part De forming the outer wall of the engine room of the deck D are configured to cover from the outside.
The upper end surface 1u of the rear cowling 1 is configured to be higher than the upper end surface Spu of the passenger seat portion Sp, and the rear projecting upward due to the step between the upper end surface 1u and the upper end surface Spu. On the front surface (tip surface) 1F of the cowling 1, the cushion material 2 is disposed on substantially the entire surface.
Further, the width of the rear cowling 1 is substantially equal to the width of the rear end of the seat S at the front portion of the upper end portion (accurately, it is slightly wider as much as it covers), and corresponds to the lower portion of the front portion. It is substantially equal to the width of the portion of the sheet S to be formed and the width of the portion De forming the outer wall of the engine room of the deck D (exactly, it is slightly wider by the amount covered).
The inside of the box portion 1B is a box-shaped space with a bottom. In this embodiment, a battery Bt of a small planing boat is accommodated in this portion. A lid member 1b is disposed on the upper surface of the box portion 1B so as to be opened and closed (or removable).
However, the inside of the box portion 1B can be used as a storage space for other parts, tools, tools, or the like.
Further, as shown in FIG. 1 or FIG. 7, the rear cowling 1 is formed with a side line Lm that flows backward from the seat S except for the stepped portion of the front surface 1F. It has a design like this.
[0020]
In the case of this embodiment, the part De forming the outer wall of the engine room of the deck D covered by the rear cowling 1 on the upper side and the side, that is, in the case of this embodiment, the box An outside air inlet 10 communicating with a space 20 serving as an engine room is formed in a lower part of the portion 1B. This inlet 10 is formed at the lower end portion of the rear cowling 1 and between the rear cowling 1 and the deck D. It communicates with a suction port Ip formed between the outer surface and the outside air can be sucked into the space 20.
[0021]
And according to the small planing boat according to the present embodiment configured as described above, the battery Bt is housed in the box portion 1B exposed to the outside which becomes a part of the rear cowling 1, The electrolyte solution of the battery Bt can be checked by opening the lid member 1b. When charging is required, maintenance such as taking out the battery Bt from the box portion 1B and charging it can be performed.
[0022]
Further, when the rear cowling 1 is disposed behind the seat S in this way, the appearance of the small planing boat becomes smart, and the overall design is excellent in merchantability.
[0023]
Further, as described above, when the cushion material 2 is disposed on the front surface 1F of the rear cowling 1 protruding upward by forming a step portion between the seat S and the rear cowling 1, a passenger seat portion of the seat S is provided. Since the passenger riding on the Sp is supported from the rear by the buttocks or the waist, the rider feels comfortable even when riding. Further, when the height of the stepped portion is made higher than that of the embodiment shown in FIG. 1, the passenger has a configuration capable of supporting the waist and the back from the back, which makes the passenger more comfortable to ride, This is a preferred embodiment in that the internal volume of the box portion 1B can be increased.
[0024]
Moreover, it replaces with the said embodiment, and as shown in FIG. 2, it is good also as a structure which eliminated the extension part below the passenger Sp of the rear cowling 1, and in such a case, it becomes the simple rear cowling 1. However, even in such a case, there are basically the same effects as the embodiment shown in FIG. Further, in this embodiment, the rear cowling 1 itself is provided with a stepped portion 1K at the center portion in the longitudinal direction, and as shown by a broken line in FIG. In addition, a bar 12 serving as a grip is disposed. When configured in this way, so that the buttock protrudes from a part of the rear cowling 1, that is, even when the seat S is short, it can be used as a seat for the passenger and when the boat rides from behind the boat. It can be used as a grip for passengers, or it can be used as a passenger's hand grip when riding. In FIG. 2, Ip is a suction port for sucking outside air into a space 20 (see FIG. 8) serving as an engine room.
[0025]
Furthermore, as a modified embodiment of FIG. 2, the upper end surface 1 u of the rear cowling 1 may be configured to have a height equal to the upper end surface Spu of the passenger portion Sp of the seat S as illustrated in FIG. 3. Good. Even in such a case, the same effects as in FIG. 2 are obtained in that a storage space can be formed in the box portion 1B. Of course, the appearance of the small planing boat will be smart, and the overall design will have excellent merchantability. In FIG. 3, Ip is a suction port for sucking outside air into a space 20 (see FIG. 8) serving as an engine room.
[0026]
Further, the rear cowling 1 may be configured as illustrated in FIG. 4 which is different from the one illustrated in FIG. 3 mainly in the position of the suction port Ip and the design thereof. In FIG. 4, the same reference numerals are assigned to the main components corresponding to those in FIG.
[0027]
Further, as shown in FIG. 5, the upper end surface 1u of the rear cowling 1 may be different from that of FIG. 1 in that it is the same as the upper end surface Spu of the passenger seat portion Sp. In the case of the rear cowling 1 having such a configuration, the passenger's collar portion can be ridden in a state of protruding backward from the passenger seat portion Sp of the seat S, and other functions and effects are the same as those of the rear cowling 1 illustrated in FIG. Are the same. In FIG. 5, the same reference numerals are assigned to the main components corresponding to those in FIG. 1 or FIGS. 2 to 4.
Further, as shown in FIG. 6, the rear cowling 1 having substantially the same shape as that shown in FIG. 4, the upper end surface 1 u of the rear cowling 1 is more than the upper end surface Spu of the passenger seat portion Sp of the seat S. It can also be set as the structure which protruded upwards. In such a case, in addition to the function and effect of the rear cowling 1 shown in FIG. 4, the function and effect that can support the buttocks or waist of the passenger from the back is added. In addition, this is a preferred embodiment in that the storage volume in the box portion 1B can be increased.
[0028]
By the way, as the rear cowling 1 according to each of the embodiments, various materials can be used. For example, the rear cowling 1 can be made of fiber reinforced plastic such as FRP, plastic, or the like. Alternatively, it may be a light alloy such as aluminum or a general steel plate.
[0029]
Such a rear cowling 1 is preferable in that it can be attached to an existing small planing boat as an optional part of a small planing boat, and the appearance image of the entire small planing boat can be changed.
[0030]
【The invention's effect】
According to the personal watercraft according to the present invention, the personal watercraft has an external appearance design that is not found in a conventional personal watercraft, and is a small personal watercraft with a design that is smart and highly productive. Further, if the rear cowling is arranged higher than the upper end surface of the seat, a small planing boat with a comfortable ride for the passenger, with the hip, waist, and back supported from the back. Furthermore, if a storage space is formed inside the rear cowling, and components or the like that require inspection or maintenance are arranged in the storage space, it is easy to approach these configurations, and inspection and maintenance can be performed.
[Brief description of the drawings]
FIG. 1 is a partial perspective view of a personal watercraft with a front portion omitted showing a configuration of a rear cowling of the personal watercraft according to an embodiment of the present invention.
FIG. 2 is a partial side view of the rear end upper part of the personal watercraft showing the configuration of the rear cowling portion of the personal watercraft according to an embodiment different from FIG. 1;
FIG. 3 is a partial side view of a rear end upper part of a personal watercraft showing a configuration of a rear cowling portion of the personal watercraft according to an embodiment different from FIGS. 1 and 2;
FIG. 4 is a partial side view of the rear end upper part of the personal watercraft showing the configuration of the rear cowling portion of the personal watercraft according to an embodiment different from those shown in FIGS.
FIG. 5 is a partial side view of the rear end upper part of the personal watercraft showing the configuration of the rear cowling part of the personal watercraft according to an embodiment different from those shown in FIGS.
FIG. 6 is a partial side view of the rear end upper part of the personal watercraft showing the configuration of the rear cowling portion of the personal watercraft according to an embodiment different from those shown in FIGS.
FIG. 7 is an overall side view of a jet propulsion personal watercraft according to an embodiment of the present invention.
8 is an overall plan view of the personal watercraft shown in FIG.
[Explanation of symbols]
E …… Engine P …… Water jet pump S …… Seat 1 …… Rear cowling

Claims (4)

In a mounted small planing boat designed to be propelled by an engine,
A rear cowling is provided at the rear of the riding type seat,
The lower end of the rear cowling has a width substantially equal to the width of the corresponding seat portion and the width of the portion forming the outer wall of the engine room of the deck so as to cover the deck from the outside to the lower position of the seat. Extended,
At the lower end of the rear cowling, between the inner surface and the outer surface of the deck is formed a suction port for sucking outside air into the engine room formed in the deck,
A personal watercraft, characterized in that the rear cowling is formed so that a rear end of the rear cowling rises upward from the lower end toward the rear. A bottomed box-shaped space is formed inside the rear cowling, and a lower portion of the bottomed box-shaped space is formed with a suction port that communicates with the engine room. The personal watercraft according to claim 1 , wherein the personal watercraft is configured to communicate with a mouth so that outside air can be sucked into the engine room from the suction port through the suction port . The personal watercraft according to claim 1 or 2, wherein a width of a front portion of an upper end portion of the rear cowling is substantially equal to a width of a rear end of the seat . 4. The device according to claim 1 , wherein a height of the rear cowling is higher than a height of a rear portion of the seat, and a cushion is disposed at a tip of the rear cowling. personal watercraft as claimed in.

Images