JPH0585427B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel filler cap for automobiles, etc., and more specifically, in a screw-in type cap, it prevents oil from flowing out from the fuel filler cap by regulating the screwing torque and detaching the cap cover in the event of an impact. It was developed with the aim of providing a fuel filler cap that has multiple functions.

It is well known that a latch and a latch pawl are used to regulate the torque of screwing in a fuel filler opening for an automobile or the like. Various structures have been proposed in the past, but many of them are complex, leading to high costs. In addition, although there are fuel filler caps that have a function to prevent oil from spilling from the fuel filler port due to breakage of the fuel filler cap cover during an impact, there are some that have a structure that only allows the cap cover to be removed from the screw-in part of the cap. It seems like it's still missing.

The fuel filler cap of the present invention was completed as a result of various studies in view of the current situation as described above.
This screw-in type fuel filler cap has the function of regulating screw-in torque and preventing oil from spilling from the fuel filler port by removing the cap cover in the event of an impact. It consists of a screw body having a threaded portion that fits the screw pitch, and a cap that is detachable from the screw body. The cap is provided with a rotating collar on the top surface, a circular lid rim that covers the latch surface and the flange, and a latch claw made of spring material at several locations on the inner circumference of the cap. When the cap is locked to the screw body, the latch surface and the latch pawl engage with each other, and the locking and disengaging pawl passes over the flange portion and becomes integrally engaged.

Hereinafter, the above configuration of the present invention will be explained specifically and in detail with reference to the drawings.

1 is a partially cutaway plan view, FIG. 2 is a partially sectional side view, and FIG. 3 is a perspective view of the cap in which the latch pawl and the disengagement pawl are integrated.

The oil filler cap of the present invention is of a screw-in type, and as shown in FIG.
It consists of. The screw body 1 has a threaded part 4 that matches the thread pitch of the oil filler pipe 3, as in the conventional case, but the upper part has a structure with a removable cap 2 and a structure for regulating the screwing torque. There are two types: body. That is, as shown in FIGS. 1 and 2, the structure on the screw body side that can be engaged with and detached from the cap is the flange portion 5, and the structure for regulating the screwing torque is a circular stand above the flange portion. A latching surface 7 forming an edge 6 and hooking in the screwing direction formed against this outer periphery.

On the other hand, as shown in FIGS. 1 and 2, the cap 2 has a rotating collar 8 on the top surface, a latch surface 7 of the circular raised edge 6 of the screw body, and a circular lid edge 9 that covers the flange portion 5 of the screw body. As a structure that can be engaged and detached from the main body, there are engaging and disengaging claws 1 made of spring material at several locations on the inner peripheral surface of the circular lid edge, corresponding to the positions of the flange parts on the main body side.
0, and as a structure for regulating the screwing torque, a latch pawl 1, also made of spring material, is provided on the upper inner surface of the circular lid edge, corresponding to the position of the latch surface 7 of the main body.
1 will be provided. Therefore, when the screw body 1 and the cap 2 are connected, simply by placing the cap over the top of the screw body and pressing it down, the locking/disengaging pawl 10 at the bottom of the inner surface of the cap will fit into the outer circumference of the flange portion 5 of the screw body, and at the same time the screw body will latch. The latch pawl 11 on the upper part of the inner surface of the cap engages with the surface 7, forming an integral fuel filler cap.

The screw body 1 is preferably made of plastic, and the cap 2 is in this case made of a metal sheet, to which it is fixed by riveting or the like with a latch pawl and a disengagement pawl made of a spring material. It is convenient if the latch pawl 11 and the locking pawl 10 are integrally molded into a shape as shown in FIG. It is also possible for the cap 2 to be made of plastic.

As shown in Figure 2, this fuel filler cap is
When the cap is turned in the screwing direction with respect to the fuel filler pipe, the latch pawl 11 of the cap catches on the latch surface 7 on the outer periphery of the circular raised edge of the screw body, and the cap rotates with the screw body and is screwed in. And O-ring packing 12
The edge of the fuel filler pipe 3 contacts the latch claw 11.
When torque is applied to the latch, the latch pawl comes off the latch surface due to its spring properties, leaving only the cap 2 free to rotate, so the screw body is tightened with a constant torque.

When an impact force is applied to the cap in this state, the engaging/disengaging pawl 10 on the cap side comes off from the flange part 5 on the main body side, and only the cap separates from the screw main body, thereby preventing damage to the screw main body.

As detailed above, although the fuel filler cap of the present invention has a simple structure, it is able to regulate screwing torque and release from impact without damage, making it a highly safe product. There is.

[Brief explanation of the drawing]

1 is a partially cutaway plan view, FIG. 2 is a partially sectional side view, and FIG. 3 is a perspective view of the cap in which the latch pawl and the disengagement pawl are integrated. 1... Screw body, 2... Cap, 3... Fuel filler pipe, 4... Threaded part, 5... Flange part, 6
... Circular standing edge, 7 ... Latch surface, 8 ... Rotating collar, 9 ... Circular lid edge, 10 ... Engaging and disengaging claw, 11 ...
Latch claw, 12...O-ring fitting.

Claims (1)

[Claims] 1 Consists of a screw body 1 having a threaded portion 4 that matches the thread pitch of a fuel filler pipe 3 of an automobile, etc., and a cap 2 that is removable from the screw body. A latch surface 7 on the outer periphery of the circular raised edge 6 above the surface is provided so as to be hooked in the reverse screw direction, and the cap 2 has a rotating collar 8 on the upper surface, and a circular lid edge 9 that covers the latch surface 7 and the flange portion 5. It consists of a latch pawl 11 made of spring material and a locking/disengaging pawl 10 at several locations on its inner peripheral surface, and when the cap is latched to the screw body, the latch surface 7 and the latch pawl 11 engage, and the flange A fuel filler cap for an automobile, etc., in which an engaging/disengaging pawl 10 passes over a part 5 to engage and integrate.