JPH0215028Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a cap that is attached to an inlet of a fuel tank of a straddle type vehicle.

(Prior art and problems to be solved by the invention) A fuel tank cap equipped with a locking device that opens and closes the fuel tank inlet of a straddle-type vehicle, such as a motorcycle, is shown in FIG. As shown, a fuel tank cap body 2 opens and closes an inlet 1a of a fuel tank 1.
is provided with an opening 2c through which the top surface of the keyhole (none of which is shown) of the locking device faces, and the opening 2c
A plate-shaped keyhole cap 3 that covers the keyhole in an openable and closable manner is disposed at c.

However, in the above conventional example, the end surfaces 2a of the opening 2c of the cap body 2,
Shaft holes 2b, 2b are formed at predetermined locations of the keyhole cap 3, and a through hole 3 is formed at the base end 3a of the keyhole cap 3.
b, and these shaft holes 2b, 2b and through hole 3b
After aligning the cap body 2 and the keyhole cap 3 so that they are in a straight line, the shaft 4 is inserted in the order of one shaft hole 2b → through hole 3b → the other shaft hole 2b to form a hinge structure and form the keyhole cap 3. is rotatably supported and attached to the cap body 2.

Therefore, hole machining is required to form the shaft holes 2b, 2b and the through hole 3b in the cap body 2 and keyhole cap 3, and the machining accuracy must be improved, making the manufacturing process complicated and The problem was that it was not easy to assemble.

(Purpose of the invention) The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a fuel tank cap for a straddle type vehicle that is easy to manufacture and assemble.

(Means for solving the problem) In order to achieve the above purpose, in this invention,
A fuel tank cap main body attached to an inlet of a fuel tank so as to be able to open and close the inlet, and a straddle comprising a locking device and a keyhole cap rotatable so as to open and close the keyhole of the locking device. In a fuel tank cap for a seat-type vehicle, a notch for a bearing is provided in the main body of the fuel tank cap, a support shaft of the keyhole cap is rotatably engaged with the notch, and a support shaft of the keyhole cap is rotatably engaged with the notch. A biasing means for biasing the shaft in a direction to engage the notch is provided.

(Embodiment of the invention) An embodiment of the invention will be described below with reference to FIGS. 1 to 4.

Lift-up type fuel tank cap 11
is a recess 12b formed in an annular shape around the opening of the inlet 12a opening on the upper surface of the fuel tank 12.
The upper part of the fuel tank cap 11 is arranged so as not to protrude when it is closed. The recess 1
A ring member 13 is attached to the bolt 13 at the mouth edge of the fuel tank 12 so that the ring member 13 is substantially flush with the upper surface of the fuel tank 12.
It is attached by a. The fuel tank cap 11 is attached to a shaft 13d that is vertically movably supported in a long hole 13c of a bearing portion 13b formed on the lower surface of the ring member 13.
It is rotatably supported on a hinge portion 11b of 1a, and is provided so that the injection port 12a can be opened and closed by rotating vertically about the hinge portion 11b as a fulcrum.

In addition, this fuel tank cap 11 has
A cylinder lock (lock device) 14 is provided which locks the fuel tank cap 11 when it is closed. The cylinder lock 14 has a cylindrical cylinder body 14a integrally attached to the back side (lower side in FIG. 3) of the under plate 11c of the cap body 11a, and the under plate 11c.
A keyhole 14 formed in the upper end surface of the cylinder body 14a is inserted into the opening 11d formed in the cylinder body 14a.
b faces the front side (upper side in FIG. 3) of the cap body 11a.

Furthermore, a ring-shaped slider 15 is wound around the outer periphery of the cylindrical cylinder body 14a of the cylinder lock 14 so as to be slidable in the axial direction thereof. This slider 15 is connected to the under plate 11 by a spring 16 compressed between the upper surface of the slider 15 and the back surface of the under plate 11c.
It is biased in the direction away from 1c. Further, the lower end of a cylindrical rubber boot 17 connecting the slider 15 and the under plate 11c is locked to the slider 15 so as to allow the slider 15 to slide. The rubber boots 1
7, when the fuel tank cap 11 is closed, its lower end is connected to the inlet 12a of the fuel tank 12.
The injection port 12a is sealed by contacting the peripheral edge of the injection port 12a.

On the other hand, the keyhole 14b of the cylinder lock 14
Under plate 1 facing from opening 11d
A plate-shaped keyhole cap 18 is provided on the upper surface of 1c to cover the keyhole 14b in an openable and closable manner.

This keyhole cap 18 covers the keyhole 14b of the cylinder lock 14 in an openable/closable manner to prevent rainwater, dust, etc. from entering through the keyhole 14b, and also serves as a handle when opening the fuel tank cap 11. ing. keyhole cap 1
8 allows the cap body 11a to rotatably support the proximal end 18a on a support shaft 21 (described later);
It is formed into a T-shape, and the edge of the tip end side 18b is formed into an arch shape to make it easy for a finger to hang the keyhole cap 18 when pulling it up.

The keyhole cap 18 is attached to the base end 18a, which serves as a pivot point.
A protrusion 19 having a cam shape with a substantially rhombic cross section is formed to protrude from the keyhole 14b side toward the underplate 11c.
9 is provided with a through hole 19a. A support shaft 21 is inserted and fixed into the through hole 19a, so that the keyhole cap 18 can rotate integrally with the support shaft 21.

On the other hand, as shown in FIG.
At the lower part of the opposing end surfaces 11e, 11e of the opening 11d, there is a notch 11f for a bearing, which has a substantially inverted U-shaped cross section.
11f is formed. The notches 11f, 11f
Both ends 21a, 21a of the support shaft 21 are rotatably engaged with the notches 11f, 21a, and the support shaft 21 is rotated by the spring force of a leaf spring (biasing means) 20, which will be described later.
It is pressed and held by the upper ends 11f' and 11f' of 11f.
By forming the notches 11f, 11f in this manner, the cap body 11a can be formed by forming the notches 11f, 11f.
Since the notches 1f and 11f are integrally formed, there is no need to separately form the notches 11f and 11f in the cap body 11a.

On the cap body 11a side, the base end of a leaf spring 20 is attached to the back surface of the cap body 11a, and the keyhole cap 18 springs the cam-shaped protrusion 19 on the tip side of the leaf spring 20. They are arranged in engagement with each other. The leaf spring 20 pushes the protrusion 19 of the keyhole cap 18 upward from below. That is, the through hole 19 of the protrusion 19
Both ends of the support shaft 21 inserted into and fixed to the notch 1
Since the upper ends 11f' and 11f' of 1f and 11f are pressed and held from below, both ends of the support shaft 21 are formed in the notch 11.
f, 11f in a securely rotatable manner.

The protrusion 19 of the keyhole cap 18 is formed so that two adjacent sides of the diamond-shaped cross section of the protrusion 19 come into contact with the tip of the leaf spring 20 in parallel when the keyhole cap 18 is opened or closed. This allows the clip to be clicked at the open and closed positions during opening and closing operations.

Next, a method of opening and closing the fuel tank cap 11 constructed as described above will be explained.

To open the fuel tank cap 11 that is in a closed state, first open the tip 18b of the keyhole cap 18.
Hook your finger on the side arch and rotate about the support shaft 21 to pull up the keyhole cap 18 toward the front of the vehicle body (to the left in FIG. 3) to expose the keyhole 14b.

Next, when the key is inserted into the keyhole 14b and rotated in the unlocking direction, the locking protrusion of the cylinder lock 14 is retracted and the fuel tank cap 11 is unlocked. When the lock is released, the slider 15 is pushed downward by the spring 16, so that the fuel tank cap 11 is lifted up and its upper part protrudes from the upper surface of the fuel tank 12.

Lifted fuel tank cap 11
The shaft 13d supporting the hinge portion 11b is used as a fulcrum, and the tip 1 of the keyhole cap 18 is
The injection port 12a is opened by holding the handle 8b and rotating it toward the rear of the vehicle body.

After refueling, first open the fuel tank cap 1.
When the fuel tank cap 11 is rotated so as to push it down toward the front side of the vehicle body, the fuel tank cap 11 is moved downward by the elastic force of the spring 16, so that the fuel tank cap 11 is moved downwardly by the elastic force of the spring 16. With the upper part of the tank cap 11 protruding from the upper surface of the fuel tank 12, open the inlet 12.
a is in a closed state.

Next, when the fuel tank cap 11 protruding from the upper surface of the fuel tank 12 is pushed downward, the slider 15 slides against the elastic force of the spring 16 as the fuel tank cap 11 descends. , the fuel tank cap 1
The top surface of fuel tank 12 is approximately at the same height as the top surface of fuel tank 12, and is locked by rotating the key inserted into keyhole 14b in the locking direction and pulling it out.

In this locked state, the slider 15
is urged downward by the elastic force of the spring 16, and the lower end of the cylindrical rubber boot 17, which is engaged with the slider 15, comes into pressure contact with the periphery of the injection port 12a to seal the injection port 12a. .

Finally, keyhole cap 1 in an upright position
8 toward the rear of the vehicle body to close the keyhole cap 18.

Keyhole cap 1 to cap body 11a
8 is assembled using the notch 11 of the cap body 11a.
Both ends 21a, 21a of the support shaft 21, which is inserted into the through hole 19a of the protrusion 19 of the keyhole cap 18 and fixed to the upper ends 11f', 11f' of f, 11f, are engaged from below, and the lower surface of the protrusion 19 is engaged. Leaf spring 2
It is sufficient to bolt one end of the leaf spring 20 to the cap body 11a while making contact with the top surface of the cap body 11a, and as in the conventional example, the cap body and keyhole cap are connected so that their shaft holes and through holes match. The keyhole cap 18 is easily and rotatably attached to the fuel tank cap 11 by the above-described assembly.

In this embodiment, the support shaft 21 is inserted into the through hole 19a of the keyhole cap 18 and fixed, but as in the present invention, the support shaft 21 is inserted into the notches 11f, 11.
Since it is configured to engage with f, the support shaft 21 may be molded by casting when the keyhole cap 18 is cast, or may be integrally molded when the keyhole cap 18 is cast.

Furthermore, the notch 11 is formed in the support shaft 21 by the leaf spring 20.
Although the upper ends 11f', 11f' of the upper ends 11f', 11f' of the upper ends 11f', 11f' are pressed and held, for example, other biasing means such as a coil spring may be used to press and hold them as described above.

(Effects of the invention) As detailed above, according to the invention, a locking device and a keyhole of the locking device can be opened and closed on the fuel tank cap body which is attached to the fuel tank inlet so as to be able to open and close the inlet. In a fuel tank cap for a straddle type vehicle, which is equipped with a keyhole cap that can be rotated as much as possible, a notch for a bearing is provided in the main body of the fuel tank cap, and a support shaft of the keyhole cap is provided in the notch. Since the keyhole cap is rotatably engaged with the keyhole cap and is provided with an urging means for urging the support shaft of the keyhole cap in the direction of engaging with the notch, the support shaft can be easily engaged with the notch. At the same time, after the engagement, the support shaft is biased in the direction of engagement with the notch by the biasing force of the biasing means, so that wobbling of the support shaft with respect to the notch is suppressed, and moreover, the fuel tank This has the effect of making the cap easier to manufacture and easier to assemble.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a fuel tank equipped with a fuel tank cap according to the present invention, FIG. 2 is a plan view of the fuel tank cap according to the present invention, and FIG.
The figure is a sectional view taken along the - line in FIG. 2, FIG. 4 is an exploded perspective view of a fuel tank cap according to the present invention, and FIG. 5 is an exploded perspective view of a conventional fuel tank cap. 11...Fuel tank cap, 11a...
Fuel tank cap body, 11f...notch,
12... Fuel tank, 12a... Fuel tank inlet, 14... Cylinder lock (lock device), 14b... Keyhole, 18... Keyhole cap, 20... Leaf spring (biasing means), 21
...The pivot.

Claims (1)

[Scope of utility model registration request] A fuel tank cap main body attached to an inlet of a fuel tank so as to be able to open and close the inlet, and a straddle comprising a locking device and a keyhole cap rotatable so as to open and close the keyhole of the locking device. In a fuel tank cap for a seat-type vehicle, a notch for a bearing is provided in the main body of the fuel tank cap, a support shaft of the keyhole cap is rotatably engaged with the notch, and a support shaft of the keyhole cap is rotatably engaged with the notch. A fuel tank cap for a straddle type vehicle, characterized in that a biasing means for biasing the shaft in a direction to engage the notch is provided.