JP2599336B2 - Locking device for hatch cover of personal watercraft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for locking a hatch cover of a personal watercraft in a closed position.

[0002]

2. Description of the Related Art As a personal watercraft, it runs around the coastal area mainly for leisure or sports while riding at the rear of a deck and gripping and steering a handle (usually a bar handle) arranged on the upper front of the hull. The type is used. This type of personal watercraft is configured to drive a propulsion device mounted on the rear of the hull by an engine mounted in an engine room inside the hull, and to steer while changing the thrust direction of the propulsion device.

[0003] A water injection device or the like is used as the propulsion device, and the water injection device obtains thrust by jetting water sucked from the bottom of the ship backward by a jet pump. In the case of this water injection device, usually, the steering is performed by changing the direction of the water injection duct. The propulsion unit is mounted in a lower open recess formed in the rear of the hull, and the recess is covered with a cover substantially coinciding with the bottom surface of the hull.

In the personal watercraft described above, a work opening for refueling the fuel tank and checking the engine is provided in a part of the deck, and the work opening is sealed with a hatch cover that can be opened and closed. The configuration is adopted. The hatch cover is generally attached to the deck so as to be openable and closable by a hinge, and is configured to be locked in a closed position by a lock device provided on the opposite side of the hinge. Further, the hatch cover is generally formed of a molded plastic article (including fiber reinforced plastic), and is usually formed of a rather large (wide) member to enhance workability. The hatch cover lock device is required to be able to be easily opened and closed and to be easily and securely locked in a closed position. Japanese Patent Publication No. 3-755 discloses a prior art.
There is No. 8.

[0005]

However, in the conventional lock device for a hatch cover of a personal watercraft, since the hatch cover is a large-sized plastic molded product, the alignment of the latching mechanism (locking mechanism) is accurately set. In addition, in order to realize secure locking, the entire device becomes large and the space efficiency of the deck is reduced.

The present invention has been made in view of such technical problems, and an object of the present invention is to easily and accurately align a lock mechanism and open and close a hatch cover with a simple operation. It is an object of the present invention to provide a locking device for a hatch cover of a personal watercraft, which can securely lock the hatch cover at a closed position and can reduce a required space.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a hatch cover locking device for a personal watercraft which is mounted on a rear portion of a deck and is operated by gripping a steering wheel. An operation of providing a bite-type lock mechanism for locking the hatch cover to the closed position on the opposite side, providing a cover member for covering the upper part of the lock mechanism on the hatch cover, and opening and closing the lock mechanism on the cover member The above object is achieved by adopting a configuration in which members are attached.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view showing an embodiment of a personal watercraft having a hatch cover locking device to which the present invention is applied, and FIG. 2 is a plan view of the personal watercraft of FIG. 1 and 2, the hull is constituted by a hollow body in which a deck 1 and a hull 2 are joined by flange portions 3 and 4 around each of them. The deck 1 and the hull 2 are usually made of a plastic molded product (including a plastic containing reinforcing fibers). An engine 6 (FIG. 1) is mounted in an engine room formed in a forward portion of the hull, and a propulsion device 8 (FIG. 1) mounted on a rear portion of the hull by the engine 6 via a drive shaft 7 (FIG. 1). Is driven. The propulsion device 8 is a jet pump.

A rear portion of the deck 1 is an area where a pilot rides, and a central portion of the rear portion of the deck has a protruding portion 9 extending forward and backward.
A seat 10 for seating is formed on the upper surface of the protrusion 9.
Is installed. The saddle-shaped seat 10 has a structure in which about one or two passengers besides the driver can ride side by side. A pilot riding on the rear of the deck 1 controls the steering wheel (bar handle) 11 disposed on the deck 1 by gripping both grip portions at both ends. In the illustrated example, a central portion of the handle 11 is covered by a handle cover 12.

On both sides of the projecting portion 9 (seat 10) of the deck 1, there are formed steps 13, 13 on which the rider places his / her feet. The dashed line W in FIG. 1 illustrates the water surface when the boat is stopped, and the dashed line X in FIG. 1 illustrates the waterline (water surface) during cruising (during gliding). The rider puts his feet on the steps 13 and 13 on both sides and gets on the boat in a standing posture or a posture sitting on the seat 10, and the driver grips the grip portion of the steering wheel 11 and steers. The propulsion device sucks water from a suction port 15 (FIG. 1) formed in the ship bottom 14 by a jet pump 8 driven by the engine 6, and sends the water backward from the stern 16 (from the duct of the propulsion device 8). It has a structure to get thrust by spouting.

On the deck 1, there is a handle tower cover 1
7 and a hatch cover 18 are attached. The handle tower cover 17 is for covering a steering (steering) mechanism provided through the deck 1. The handle cover 12 is attached to the steering mechanism so as to be able to rotate (steer) together with the handle 11. The deck 1 is provided with a working opening 19 (FIG. 2) for supplying fuel to a fuel tank (not shown) mounted inside the hull or for checking the engine 6 and the like. This is for sealing the work opening 19 so that it can be opened and closed freely.

In FIG. 1 and FIG. 2, the hatch cover 18 has a hinge 20 at its front end with respect to the deck 1.
Is attached so as to be openable and closable in the direction of the double arrow A via the arrow. A cover cap (cover member) 21 is provided on a rear end portion of the hatch cover 18 (a protruding portion opposite to the hinge 20).
Is fixed, and a lock device 22 for locking the hatch cover 18 in the closed position is provided inside the cover cap 21. The locking / unlocking operation of the lock device 22 is performed by a lever (operation member) 23 attached to the upper surface of the cap cover 21.

FIG. 3 is a longitudinal sectional view showing the structure of the lock device 22 of the hatch cover 18. As shown in FIG. In FIG. 3, a cover cap 21 is fastened to a projecting portion 24 at the rear end of the hatch cover 18 by bolts and nuts 31 so as to open and close integrally. On the upper surface of the deck 1, a pin member 32 is fixed at a position inside the cover cap 21 (a position near the rear end of the hatch cover 18) so that the vertical position can be adjusted. 4 is a sectional view taken along line 4-4 in FIG. 3, and FIG. 5 is a partial sectional side view taken along line 5-5 in FIG.

3 to 5, the pin member 32 is formed by a bolt portion 33 and a ring-shaped pin 34 fixed to the head of the bolt portion. The portion 33 is screwed and fixed at a predetermined height position by a lock nut 36. The projecting portion 24 at the rear end of the hatch cover 18 has the pin 34
A catching member 38 having a groove 37 for receiving is secured by a bolt / nut 39. The groove 37 is open at the lower end, and the open end is shaped to smoothly receive the pin 34. The capturing member 38 has a forked shape (FIG. 4), and a hook member 41 is rotatably supported by a support shaft 40 provided on the capturing member 38.

The hook member 41 is formed by a torsion coil spring (not shown) mounted around the support shaft 40.
The pin 34 received in the groove 37 is
Is urged by the hook portion 42 in the direction of catching (in the direction of arrow B) so as not to come out. Thus, the groove 37 of the capturing member 38 and the hook portion 42 of the hook member 41
Accordingly, a locking mechanism 43 of a bite type that locks the pin 34 without being detached from the groove 37 is configured.

According to the lock mechanism 43, when closing the hatch cover 18, the pin 34 is inserted into the groove 37 while rotating the hook member 41 in the direction opposite to the arrow B against the torsion coil spring (not shown). Further, when the hatch cover 18 comes to the closed position, the hook member 41 is automatically rotated in the direction of arrow B by the spring urging force and returns to the original position. Therefore, the hatch cover 18 can be locked at the closed position only by the operation of closing the hatch cover 18. The hook member 41
Is formed at the lower end portion thereof with a slope 53 inclined downward and to the left. The slope 53 is for rotating the hook member 41 in the direction opposite to the arrow B (unlocking direction) against the biasing force of the spring by abutment with the pin 34 described later.

On the other hand, when opening the hatch cover 18,
The hook member 41 is connected to the torsion coil spring (not shown).
The hook portion 42
The hatch cover 18 can be easily opened by lifting the hatch cover 18 by separating the pin 34 from the groove 37 so that the pin 34 can escape from the groove 37 smoothly. That is, the hook member 41
The hatch cover 18 can be unlocked by simply rotating the hatch cover 18.

Therefore, the unlocking operation of the lock mechanism 43 is performed by the lever 23. This lever (operation member) 23 is attached to the upper surface of the cover cap (cover member) 21 fixed to the hatch cover 18. The lever 23 is disposed almost directly above the lock mechanism 43 as shown in FIG.
FIG. 6 is a partial sectional view showing the operation of the lever 23,
FIG. 7 is a plan view of the lever 23 taken along the line 7-7 in FIG.

3 and 6, a lever cap 45 is attached to the cover cap 21 by bolts and nuts 44.
Is fixed, and the lever (operation member) 23 is rotatably supported on a support shaft 46 provided on the lever holder 45. The lever 23 is urged in the direction of arrow C by a torsion coil spring 47 (FIG. 3) mounted around the support shaft 46, and is held at the non-operation position. Further, the rotation range of the lever 23 is limited to a fixed angle range, and stoppers (not shown) that contact the predetermined position of the lever 23 are provided at both end positions.

In FIG. 3, one end of the lever 23 and one end of the hook member 41 are connected by a rod-like link 48 extending substantially vertically. One end (upper end) of the link 48 is connected to the lever 23 by a rotatable pin joint 49, and the other end (lower end) of the link 48 is connected to the hook member 41 by a rotatable pin joint 50. I have. The projecting portion 24 of the hatch cover 18 and the cover cap 21 fixed thereto are provided with the link 48 and openings 51 and 52 for allowing the link 48 to operate.

The operation of the lock device 22 for the hatch cover 18 described above is as follows. When the lever (operating member) 23 is turned from the locked state shown by the solid line in FIG. 3 to the position shown by the two-dot chain line (in the direction opposite to the arrow C) against the spring 47, the link 48 is used. The hook member 41 also rotates to the position shown by the two-dot chain line (in the direction opposite to the arrow B). Then, the hook portion 42 is disengaged from the groove 37, and the pin 34 captured in the groove 37 is in a state where it can escape from the open end of the groove 37 (an unlocked state).

The rotation range of the lever 23 is limited to a necessary and sufficient angle by a stopper (not shown) of the lever holder 45. Thus, after the above unlocked state, the hatch cover 18 can be opened by lifting the lever 23 as it is. When the hatch cover 18 is opened and the hand is released from the lever 23, the lever 23 and the hook member 41 automatically return to the position shown by the solid line in FIG. 3 (the same position as the locked position) due to the spring force. I do.

When the hatch cover 18 is closed, the hatch cover 18 may be closed by holding the lever 23 or the lever 23 may be closed.
It may be closed without holding. When closing by holding the lever 23, the gravity of the hatch cover 18 causes the lever 23 to close.
3 and the hook member 41 against the urging force of the spring.
When the hatch cover 18 is lowered as it is at the rotation position (the position rotated in the direction of arrow C or the direction of arrow B) as indicated by the two-dot chain line, the pin 34 fits into the groove 37 and the hatch The cover 18 is set in the closed position. Then, when the hand is released from the lever 23, both the lever 23 and the hook member 41 are rotated (returned) in the directions of the arrows C and B by the spring urging force, so that the pin 34 is in a locked state in which the pin 34 cannot be removed from the groove 37. . That is, the lock can be automatically performed only by closing the hatch cover 18.

The hatch cover 18 can be closed without holding the lever 23. In this case, the hook member 41 hits the pin 34, but the tip (lower end) of the hook member 41 is closed. As shown in FIG. 3 and FIG. 5, since the slope 53 is inclined in the lower left direction, the hook member 41 opens against the spring force by the collision with the pin 34 (the direction opposite to the arrow B). Will rotate. Therefore, also in this case, when the hatch cover 18 is lowered as it is, the pins 34 are fitted into the grooves 37, and the hatch cover 18 is set to the closed position. When the hook member 41 is set to the closed position, the hook member 41 rotates (returns) in the direction of arrow B due to the biasing force of the spring, and the pin 34 enters a locked state in which the pin 34 cannot be removed from the groove 37. That is, the lock can be automatically performed only by closing the hatch cover 18.

According to the embodiment described above, the following effects can be obtained. First, as a locking mechanism of the hatch cover 18, the fixing pin 34 is formed by the groove 37 and the hook portion 42.
Since the bite lock mechanism is used to hold the hatch cover 18 in a state where the hatch cover 18 cannot be detached, the hatch cover 18 can be securely locked at the closed position. Second, operating member (lever)
The hook 23 and the hook member 41 are connected by a link 48 for connecting the pins at both ends, and the height position of the fixing pin 34 is adjustable. Therefore, even if there is an accumulation error of the hatch cover 18 or its mounting portion, these errors can be reduced. Absorption can be completely achieved, and therefore, the influence of misalignment of the lock mechanism can be eliminated. Third, the hatch cover 18 can be opened and closed very easily.
Fourth, since the operating member (lever) 23 and the lock mechanism 43 are vertically separated from each other and are connected by the link 48, the space required for the lock device 22 can be reduced as much as possible. Thus, a small personal watercraft that can effectively use the space of the deck 1 including the inside of the cover member 21 is obtained.

In the illustrated embodiment, the case of a small personal watercraft having a saddle-shaped seat 10 in the center of the rear portion of the deck 1 has been described as an example. A small personal watercraft of the type that forms a riding floor between the fins that protrudes upward on both sides of the rear and a passenger rides between them, or a small personal watercraft that forms the rear of the deck with a simple flat riding surface The same operation and effect can be obtained. Further, in the above-described embodiment, the hatch cover 18 is attached to the cover cap 2 as a separate member.
1 are fixed, but they may be formed by one member by integral molding.

[0027]

As is apparent from the above description, according to the present invention, there is provided a lock device for a hatch cover of a personal watercraft which is mounted on a rear portion of a deck and is operated by gripping a steering wheel.
A hatch cover is attached to the deck by a hinge so as to be openable and closable, and a bite lock mechanism for locking the hatch cover to a closed position is provided on the opposite side of the hinge, and the hatch cover covers the upper part of the lock mechanism. The operation member for opening and closing the lock mechanism is attached to the cover member, so that the alignment of the lock mechanism can be easily and accurately obtained, and the hatch cover can be opened and closed by a simple operation. A lock device for a hatch cover of a personal watercraft, which can securely lock the hatch cover in a closed position and can reduce a required space.

[Brief description of the drawings]

FIG. 1 is a right side view showing an embodiment of a personal watercraft equipped with a hatch cover locking device to which the present invention is applied.

FIG. 2 is a plan view of the personal watercraft of FIG.

FIG. 3 is a longitudinal sectional view showing a hatch cover locking device of a personal watercraft according to an embodiment of the present invention.

FIG. 4 is a sectional view of the locking mechanism taken along line 4-4 in FIG. 3;

FIG. 5 is a partial cross-sectional side view taken along line 5-5 in FIG.

FIG. 6 is a side view showing the operation member and its operation in FIG.

FIG. 7 is a plan view of the operation member as viewed from line 7-7 in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deck 2 Hull 6 Engine 7 Drive shaft 8 Propulsion device 9 Projection 10 Seat 11 Handle 13 Step 17 Handle tower cover 18 Hatch cover 19 Work opening 20 Hinge 21 Cover member (Cover cap) 22 Lock device 23 Operating member (Lever) 24 Projection part 32 Pin member 33 Bolt part 34 Pin 37 Groove 38 Capture member 40 Support shaft 41 Hook member 42 Hook part 43 Engagement type lock mechanism 45 Lever holder 46 Support shaft 47 Torsion coil spring 48 Link 49 Pin joint 50 Pin joint 53 Slope (hook member)

Claims (1)

(57) [Claims] 1. A hatch cover locking device for a personal watercraft that rides on a rear portion of a deck and steers by gripping a handle, wherein the hatch cover is attached to a deck by a hinge so as to be openable and closable, and the hatch cover is closed on the opposite side of the hinge. A bite type lock mechanism for locking to the position is provided,
A hatch cover locking device for a personal watercraft, wherein a cover member is provided on the hatch cover to cover the lock mechanism, and an operation member for opening and closing the lock mechanism is attached to the cover member.